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CN112109646A - System and method for realizing low-power-consumption vehicle-mounted communication management - Google Patents

System and method for realizing low-power-consumption vehicle-mounted communication management Download PDF

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Publication number
CN112109646A
CN112109646A CN202010959258.XA CN202010959258A CN112109646A CN 112109646 A CN112109646 A CN 112109646A CN 202010959258 A CN202010959258 A CN 202010959258A CN 112109646 A CN112109646 A CN 112109646A
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China
Prior art keywords
circuit
vehicle
voltage
power supply
backup battery
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CN202010959258.XA
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Chinese (zh)
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CN112109646B (en
Inventor
孙晓彤
梁志伟
伍世儒
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transceivers (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a system for realizing low-power-consumption vehicle-mounted communication management, which comprises a voltage-stabilizing power supply circuit, a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit and a controller, wherein the voltage-stabilizing power supply circuit is connected with the controller; the controller starts a dormancy process when the quantity of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire detected by the voltage detection circuit is less than a preset level threshold value; after the dormancy process is started, the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit are respectively dormant, and the voltage stabilizing power supply circuit is powered off after the CAN transceiver and the voltage detection circuit are dormant by combining the dormant state of the vehicle-mounted communication circuit, so that the voltage stabilizing power supply circuit is powered off and dormant forcibly when the vehicle-mounted communication circuit is dormant and power is supplied or the dormancy is abnormal, and after all the circuit dormancy and awakening information are configured, the vehicle-mounted communication circuit enters the dormancy to realize entering the complete vehicle dormancy mode. By implementing the method and the device, the risks of false triggering of the conventional automobile sleep mode and abnormal sleep of the vehicle-mounted communication circuit are avoided.

Description

System and method for realizing low-power-consumption vehicle-mounted communication management
Technical Field
The invention relates to the technical field of automobiles, in particular to a system and a method for realizing low-power-consumption vehicle-mounted communication management.
Background
At present, the method for realizing low-power consumption vehicle communication management is that, in the normal working state of an automobile, a communication and power supply management unit is in a normal working mode to supply power to a vehicle-mounted communication circuit (4G/5G) and a controller, and at the moment, a control terminal can directly send a control instruction to the controller, and the controller controls corresponding vehicle-mounted equipment to act; and in the automobile sleep mode, the control terminal firstly sends a wake-up instruction to the communication and power management unit, so that the communication and power management unit is awakened to enter a normal working mode to supply power to the vehicle-mounted communication circuit, and then the control terminal sends a control instruction to the controller, and the controller controls corresponding vehicle-mounted equipment to act.
However, in the method, the judgment condition that the automobile enters the sleep mode is determined by the number of network management messages on the CAN bus, so that the method is simple and easy to implement, but has the risk of false triggering of the sleep mode, and the problem that the vehicle-mounted communication circuit is abnormal in sleep due to the fact that a power supply strategy which always supplies power to the vehicle-mounted communication circuit is adopted in the sleep state, so that the sleep current is too large once the vehicle-mounted communication circuit is abnormal in sleep, and the risk of static consumption of a storage battery of the whole automobile is increased.
Therefore, there is a need for a method for implementing low-power-consumption vehicle-mounted communication management, which is not limited to the number of CAN network management messages to determine the entering of the vehicle sleep mode to avoid the risk of false triggering of the vehicle sleep mode in the prior art, but also manages the power supply of the vehicle-mounted communication circuit in the sleep mode to avoid the risk of abnormal sleep of the vehicle-mounted communication circuit in the vehicle sleep mode in the prior art.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a system and a method for implementing low power consumption vehicle-mounted communication management, which can not only avoid the risk of false triggering of the vehicle hibernation mode in the prior art, but also avoid the risk of abnormal hibernation of the vehicle-mounted communication circuit in the vehicle hibernation mode in the prior art.
In order to solve the technical problem, an embodiment of the present invention provides a system for implementing low power consumption vehicle-mounted communication management, including a voltage-stabilizing power supply circuit, a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit and a controller; wherein,
the voltage input end of the voltage-stabilizing power supply circuit is connected with a storage battery of an automobile, and the voltage output end of the voltage-stabilizing power supply circuit is connected with the voltage end of the vehicle-mounted communication circuit, the voltage end of the CAN transceiver, the voltage end of the voltage detection circuit and the voltage end of the controller;
the controller with on-vehicle communication circuit, CAN transceiver, voltage detection circuit and steady voltage supply circuit all communicate, and it includes:
the dormancy triggering unit is used for starting a dormancy process when the number of CAN network management messages transmitted and received by the CAN transceiver is judged to be smaller than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is judged to be smaller than a preset level threshold value;
the single-power-supply low-power-consumption dormancy management unit is used for issuing a corresponding dormancy instruction to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be dormant respectively after a dormancy process is started, issuing a corresponding power-off control instruction to the voltage-stabilizing power supply circuit by combining the dormancy state of the vehicle-mounted communication circuit, enabling the voltage-stabilizing power supply circuit to be powered off after the CAN transceiver and the voltage detection circuit are dormant, enabling the voltage-stabilizing power supply circuit to be powered off forcibly when the vehicle-mounted communication circuit is kept powered on or the vehicle-mounted communication circuit is abnormally dormant, and further enabling the voltage-stabilizing power supply circuit to enter a dormancy mode after all circuits receiving the dormancy instruction are determined to be normally dormant and corresponding related awakening information is configured, so that the whole vehicle dormancy mode is achieved.
Wherein the controller further comprises:
the single-power-supply low-power-consumption dormancy awakening unit is used for detecting all configured awakening information after the single-power-supply low-power-consumption dormancy awakening unit is awakened in an entire vehicle dormancy mode, issuing corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be awakened respectively when all the awakening information is detected correctly, issuing corresponding power-on control instructions to the voltage-stabilizing power supply circuit in combination with a power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit, ensuring that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened, ensuring that the CAN transceiver and the voltage detection circuit are powered by the voltage-stabilizing power supply circuit after being awakened, and achieving the entire vehicle working mode.
The wake-up information comprises a remote control instruction for respectively waking up the vehicle-mounted communication circuit and the voltage detection circuit and a CAN communication instruction for waking up the CAN transceiver.
The embodiment of the invention also provides another system for realizing low-power-consumption vehicle-mounted communication management, which comprises a voltage-stabilizing power supply circuit, a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit, a controller, a backup battery charging circuit, a backup battery boosting circuit and a backup battery control circuit, wherein the voltage-stabilizing power supply circuit is connected with the controller; wherein,
the voltage input end of the voltage-stabilizing power supply circuit is connected with a storage battery of an automobile, the voltage output end of the voltage-stabilizing power supply circuit is respectively connected with the voltage end of the vehicle-mounted communication circuit, the voltage end of the CAN transceiver, the voltage end of the voltage detection circuit, the voltage end of the controller, the voltage end of the backup battery charging circuit and the voltage end of the backup battery control circuit,
the backup battery charging circuit, the backup battery and the backup battery booster circuit are sequentially connected in series and then are connected in parallel to a power supply line connected between the storage battery and the voltage-stabilizing power supply circuit; the backup battery charging circuit and the backup battery control circuit are both communicated with the controller; the backup battery is in communication with the backup battery control circuit;
the controller with on-vehicle communication circuit, CAN transceiver, voltage detection circuit and steady voltage supply circuit all communicate, and it includes:
the dormancy triggering unit is used for starting a dormancy process when the number of CAN network management messages transmitted and received by the CAN transceiver is judged to be smaller than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is judged to be smaller than a preset level threshold value;
a dual power low power consumption dormancy management unit, which is used for issuing a corresponding dormancy instruction to make the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit respectively dormant after a dormancy process is started, and issuing a corresponding power-off control instruction to the voltage-stabilizing power supply circuit in combination with the dormant state of the vehicle-mounted communication circuit to make the voltage-stabilizing power supply circuit powered off after the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are dormant, and make the voltage-stabilizing power supply circuit powered off forcibly or powered off and dormant when the vehicle-mounted communication circuit is abnormally dormant after the vehicle-mounted communication circuit is dormant, and further after all circuits receiving the dormancy instruction are determined to be normal and corresponding related awakening information configuration is completed according to the working requirement of the backup battery in the dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; the working requirement of the backup battery in the whole vehicle sleep mode is to exit a standby state or keep the standby state;
wherein the controller further comprises:
a dual power low power consumption dormancy awakening unit, which is used for detecting all configured awakening information after being awakened in a complete vehicle dormancy mode, issuing corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit to be awakened respectively when all the awakening information is detected correctly, and issuing corresponding power-on control instructions for the voltage-stabilizing power supply circuit in combination with the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened and ensure that the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are powered by the voltage-stabilizing power supply circuit after being awakened, and the working mode of the whole vehicle is realized.
Wherein the controller further comprises:
the backup power supply charging control unit is used for issuing a charging starting instruction to the backup battery charging circuit to enable the storage battery to charge the backup battery when the received electric quantity of the backup battery detected by the backup battery control circuit is smaller than a first preset electric quantity threshold value under the working mode of the whole vehicle; under the whole vehicle working mode, when the electric quantity of the backup battery detected by the backup battery control circuit reaches a second preset electric quantity threshold value, the backup battery charging circuit issues a charging pause instruction, and the storage battery is interrupted to charge the backup battery.
The wake-up information is first wake-up information when the backup battery exits the standby state or second wake-up information when the backup battery is in the standby state; wherein,
the first awakening information comprises a remote control instruction for respectively awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit and a CAN communication instruction for awakening the CAN transceiver;
the second awakening information comprises remote control instructions for awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit respectively, CAN communication instructions for awakening the CAN transceiver and a power supply circuit voltage threshold value for performing abnormal detection on the voltage of a power supply circuit.
Wherein the controller further comprises:
the main/standby power supply first switching mode unit is used for sending a power supply instruction to the backup battery control circuit to control the backup battery to output power supply voltage when the voltage of the power supply line detected by the voltage detection circuit is judged to be smaller than a preset voltage threshold value under the working mode of the whole vehicle; otherwise, a cutting instruction is issued to the backup battery control circuit to enable the backup battery to be in a standby state so as to cut off the output of the power supply voltage, and the output of the power supply voltage of the storage battery is recovered;
and the main/standby power supply second switching mode unit is used for sending a power supply instruction to the awakened backup battery control circuit to control the backup battery to output power supply voltage if the voltage of a power supply line detected after the voltage detection circuit is awakened does not reach the voltage threshold of the power supply circuit when the backup battery is in a standby state under the sleep mode of the whole vehicle.
The embodiment of the invention also provides a method for realizing low-power-consumption vehicle-mounted communication management, which is realized in the system for realizing low-power-consumption vehicle-mounted communication management, and the method comprises the following steps:
the controller starts a dormancy process when judging that the quantity of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
the controller sends corresponding sleep instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to sleep respectively after a sleep process is started, sends corresponding power-off control instructions to the voltage-stabilizing power supply circuit in combination with the sleep state of the vehicle-mounted communication circuit, enables the voltage-stabilizing power supply circuit to be powered off after the CAN transceiver and the voltage detection circuit sleep, enables the voltage-stabilizing power supply circuit to maintain power supply after the vehicle-mounted communication circuit sleeps or to conduct forced power-off sleep when the vehicle-mounted communication circuit is abnormally sleeped, further enables all circuits receiving the sleep instructions to sleep normally after all circuits are determined to be in sleep normally and corresponding related awakening information is configured, and then enables the circuits to enter the sleep mode to enter the whole vehicle sleep mode.
Wherein the method further comprises:
under the whole vehicle sleep mode, the controller detects all configured awakening information after awakening the controller, and sends corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be awakened respectively when all the awakening information is detected correctly, and the controller combines the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit to send corresponding power-on control instructions to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened, and ensure that the CAN transceiver and the voltage detection circuit are powered by the voltage-stabilizing power supply circuit after being awakened, thereby realizing entering the whole vehicle working mode.
The embodiment of the present invention further provides another method for implementing low power consumption vehicle-mounted communication management, which is implemented in the foregoing system for implementing low power consumption vehicle-mounted communication management, and the method includes the following steps:
the controller starts a dormancy process when judging that the quantity of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
after the dormancy process is started, the controller issues corresponding dormancy instructions to enable a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit, a backup battery charging circuit and a backup battery control circuit to be dormant respectively, and in combination with the dormancy state of the vehicle-mounted communication circuit, a corresponding power-off control instruction is issued to a voltage-stabilizing power supply circuit, so that the voltage-stabilizing power supply circuit is powered off after the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are dormant, the voltage-stabilizing power supply circuit is powered off forcibly when the vehicle-mounted communication circuit is kept powered on or the vehicle-mounted communication circuit is abnormally dormant, and further after all circuits receiving the dormancy instructions are determined to be normal and corresponding related awakening information configuration is completed according to the work requirement of the backup battery in the vehicle dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; and the working requirement of the backup battery in the whole vehicle sleep mode is to exit the standby state or keep the standby state.
Wherein the method further comprises:
in the whole vehicle sleep mode, the controller detects all configured awakening information after being awakened, and when all the awakening information is detected correctly, corresponding awakening instructions are issued to enable the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit to be awakened respectively, and the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit is combined to issue a corresponding power-on control instruction to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before the vehicle-mounted communication circuit is awakened, and ensuring that the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are powered by the voltage stabilizing power supply circuit after being awakened, so as to realize entering the working mode of the whole vehicle.
The embodiment of the invention has the following beneficial effects:
1. when the automobile sleep mode is judged, the number of CAN network management messages transmitted and received by the CAN transceiver and the level condition of an ignition wire transmission signal detected by the voltage detection circuit are judged, so that the problem of abnormal sleep caused by abnormal automobile conditions is avoided, and the risk of false triggering of the automobile sleep mode in the prior art is effectively avoided;
2. according to the invention, the dormancy state detection of the vehicle-mounted communication circuit (such as a 4G/5G vehicle-mounted communication module) is added in the dormancy process, so that the phenomenon that the current exceeds the standard in the dormancy state of the whole vehicle due to the occurrence of the dormancy abnormality of the vehicle-mounted communication circuit is prevented, the low-power-consumption power supply management in the dormancy state of the vehicle-mounted communication circuit is realized, and the risk of the dormancy abnormality of the vehicle-mounted communication circuit in the vehicle dormancy mode in the prior art is effectively avoided;
3. the invention also adds the power management of the low power consumption of the vehicle-mounted communication circuit in the dormant state when the vehicle-mounted communication circuit is provided with the backup battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a system for implementing low-power consumption vehicle-mounted communication management according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of the controller of FIG. 1;
fig. 3 is a schematic diagram of a system for implementing low-power-consumption vehicle-mounted communication management according to an embodiment of the present invention, where a complete vehicle operating mode is implemented to enter a complete vehicle sleep mode;
fig. 4 is a schematic structural diagram of a system for implementing low-power-consumption vehicle-mounted communication management according to a second embodiment of the present invention;
FIG. 5 is a functional block diagram of the controller of FIG. 4;
fig. 6 is a flowchart of a method for implementing low power consumption vehicle-mounted communication management according to a third embodiment of the present invention;
fig. 7 is a flowchart of a method for implementing low power consumption vehicle-mounted communication management according to a fourth embodiment of the present invention; .
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, a system for implementing low power consumption vehicle-mounted communication management according to a first embodiment of the present invention includes a voltage-stabilizing power supply circuit 1, a vehicle-mounted communication circuit (e.g., a 4G/5G vehicle-mounted wireless communication module) 2, a CAN transceiver 3, a voltage detection circuit 4, and a controller 5; wherein,
the voltage input end of the voltage-stabilizing power supply circuit 1 is connected with a storage battery of an automobile, the voltage output end is respectively connected with the voltage end of the vehicle-mounted communication circuit 2, the voltage end of the CAN transceiver 3, the voltage end of the voltage detection circuit 4 and the voltage end a of the controller 5, and the signal control end is connected with the first signal control end b1 of the controller 5; the voltage-stabilizing power supply circuit 1 is used for supplying power to the connected circuits when receiving a corresponding power-off control instruction issued by the controller 5 in the whole vehicle working mode; or when receiving a corresponding power-on control instruction issued by the controller 5 in the whole vehicle sleep mode, selectively powering off the connected circuits;
the signal control terminal of the vehicle-mounted communication circuit 2 is connected with the second signal control terminal b2 of the controller 5; the vehicle-mounted communication circuit 2 is used for normal communication in a whole vehicle working mode, and enters a sleep state when receiving a sleep instruction issued by the controller 5 in the whole vehicle working mode; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
the CAN transceiver 3 is positioned on the CAN network, and the signal control end of the CAN transceiver is connected with a third signal control end b3 of the controller 5; the CAN transceiver 3 is used for receiving and transmitting CAN network management messages in a whole vehicle working mode, receiving a sleep instruction issued by the controller 5 in the whole vehicle working mode, and entering sleep; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
the signal input end of the voltage detection circuit 4 is connected with an ignition wire of the automobile, and the signal output end is connected with a fourth signal control end b4 of the controller 5; the voltage detection circuit 4 is used for detecting the level of a transmission signal on a firing line under the working mode of the whole vehicle, receiving a sleep instruction sent by the controller 5 under the working mode of the whole vehicle and entering sleep; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up; it can be understood that the voltage detection circuit 4 can also be connected to a power supply line between the storage battery and the voltage-stabilizing power supply circuit 1 to detect the magnitude of the power supply voltage on the power supply line;
at this time, the controller 5 communicates with the vehicle-mounted communication circuit 2, the CAN transceiver 3, the voltage detection circuit 4 and the voltage stabilization power supply circuit 1, and includes:
a dormancy trigger unit 51, configured to start a dormancy procedure when it is determined that the number of CAN network management messages received and transmitted by the CAN transceiver 3 is smaller than a preset value (e.g., 0) and the level of an ignition line transmission signal detected by the voltage detection circuit 4 is smaller than a preset level threshold (e.g., 4V);
the single-power-supply low-power-consumption dormancy management unit 52 is used for issuing corresponding dormancy instructions to enable the vehicle-mounted communication circuit 2, the CAN transceiver 3 and the voltage detection circuit 4 to be dormant respectively after a dormancy process is started, issuing corresponding power-off control instructions to the voltage-stabilizing power supply circuit 1 in combination with the dormant state of the vehicle-mounted communication circuit 2 to enable the voltage-stabilizing power supply circuit 1 to be powered off after the CAN transceiver 3 and the voltage detection circuit 4 are dormant, enabling the voltage-stabilizing power supply circuit 1 to keep power supply after the vehicle-mounted communication circuit 2 is dormant or to conduct forced power-off dormancy when the vehicle-mounted communication circuit 2 is abnormally dormant, and further enabling the vehicle to enter the dormancy mode after all circuits receiving the dormancy instructions are determined to be normal and corresponding related awakening information is configured; the wake-up information comprises a remote control instruction for respectively waking up the vehicle-mounted communication circuit 2 and the voltage detection circuit 4 and a CAN communication instruction for waking up the CAN transceiver 3; of course, the information of the pin configuration between the controller 5 and each connected circuit is also included;
in the first embodiment of the present invention, the controller 5 further includes a single-power-supply low-power-consumption sleep wake-up unit 523, which is used in a complete vehicle sleep mode, detects all configured wake-up information after being woken up, and when all wake-up information are detected correctly, sends corresponding wake-up instructions to wake up the vehicle-mounted communication circuit 2, the CAN transceiver 3, and the voltage detection circuit 4, respectively, and sends corresponding power-on control instructions to the voltage-stabilized power supply circuit 1 in combination with a power supply state between the voltage-stabilized power supply circuit 1 and the vehicle-mounted communication circuit 2, so as to ensure that the vehicle-mounted communication circuit 2 is powered by the voltage-stabilized power supply circuit 1 before being woken up, and ensure that the CAN transceiver 3 and the voltage detection circuit 4 are powered by the voltage-stabilized power supply circuit 1 after being woken up, thereby achieving entering a.
As shown in fig. 3, in a working mode of a whole vehicle, firstly, a controller 5 determines whether to enter a sleep flow by an ignition line level collected by a voltage detection circuit 4 and a number of CAN network management messages received and transmitted by a CAN transceiver 3, and the two are absent. Secondly, once the two conditions that the level of the ignition wire is lower than the preset level threshold value and the number of the network management messages is smaller than the preset value are simultaneously met, the ignition wire enters a sleep process, the controller 5 issues a sleep instruction to each circuit, and simultaneously issues a corresponding power-off control instruction to the voltage-stabilizing power supply circuit 1 to control the voltage-stabilizing power supply circuit 1 to orderly close the power supply of each circuit. Then, the controller 5 waits for the vehicle-mounted communication circuit 2 to enter a sleep state, and if the vehicle-mounted communication circuit 2 is detected to be abnormally sleep, the controller 5 closes the voltage-stabilizing power supply circuit 1 to supply power to the vehicle-mounted communication circuit 2; and if the sleep of the vehicle-mounted communication circuit 2 is normal, keeping the power supply of the vehicle-mounted communication circuit 2. Finally, after the controller 5 confirms that all the circuits (or functional modules) receiving the sleep instruction enter the sleep state, the wake-up information (the sleep holding pin and the wake-up source formed by the remote control instruction and the CAN communication instruction) is configured, and after the configuration is completed, the controller 5 enters the sleep state to realize entering the whole vehicle sleep mode.
In the vehicle sleep mode, the controller 5 first starts detection of all wakeup information. Secondly, when the controller 5 detects that the wake-up information is correct, the controller 5 detects the power supply state of the vehicle-mounted communication circuit 2, and directly sends a wake-up instruction if no abnormality occurs, so that the corresponding function of the vehicle-mounted communication circuit 2 is woken up to work, and meanwhile, the controller also sends wake-up instructions to other dormant circuits, so that the corresponding functions of other circuits are woken up to work. Finally, if the controller 5 detects that the power supply state of the vehicle-mounted communication circuit 2 is abnormal, the voltage-stabilizing power supply circuit 1 CAN firstly supply power to the vehicle-mounted communication circuit 2 and then wake up the vehicle-mounted communication circuit 2 to realize corresponding functional work, namely, the voltage-stabilizing power supply circuit 1 supplies power to the vehicle-mounted communication circuit 2 before the vehicle-mounted communication circuit 2 is woken up, and the voltage-stabilizing power supply circuit 1 supplies power after the CAN transceiver 3 and the voltage detection circuit 4 are woken up, so that the whole vehicle working mode is realized.
As shown in fig. 4 and 5, in a second embodiment of the present invention, another system for implementing low-power consumption vehicle-mounted communication management is provided, including a voltage-stabilizing power supply circuit 1, a vehicle-mounted communication circuit 2, a CAN transceiver 3, a voltage detection circuit 4, a controller 5, a backup battery charging circuit 6, a backup battery 7, a backup battery boosting circuit 8, and a backup battery control circuit 9; wherein,
the voltage input end of the voltage-stabilizing power supply circuit 1 is connected with a storage battery of an automobile, the voltage output end is respectively connected with the voltage end of the vehicle-mounted communication circuit 2, the voltage end of the CAN transceiver 3, the voltage end of the voltage detection circuit 4, the voltage end a of the controller 5, the voltage end of the backup battery charging circuit 6 and the voltage end of the backup battery control circuit 9, and the signal control end is connected with the first signal control end b1 of the controller 5; the voltage-stabilizing power supply circuit 1 is used for supplying power to the connected circuits when receiving a corresponding power-off control instruction issued by the controller 5 in the whole vehicle working mode; or when receiving a corresponding power-on control instruction issued by the controller 5 in the whole vehicle sleep mode, selectively powering off the connected circuits;
the signal control terminal of the vehicle-mounted communication circuit 2 is connected with the second signal control terminal b2 of the controller 5; the vehicle-mounted communication circuit 2 is used for normal communication in a whole vehicle working mode, and enters a sleep state when receiving a sleep instruction issued by the controller 5 in the whole vehicle working mode; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
the CAN transceiver 3 is positioned on the CAN network, and the signal control end of the CAN transceiver is connected with a third signal control end b3 of the controller 5; the CAN transceiver 3 is used for receiving and transmitting CAN network management messages in a whole vehicle working mode, receiving a sleep instruction issued by the controller 5 in the whole vehicle working mode, and entering sleep; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
a first signal input end of the voltage detection circuit 4 is connected with an ignition wire of the automobile, a second signal input end is connected with a power supply line connected between the storage battery and the voltage-stabilizing power supply circuit 1, and a signal output end is connected with a fourth signal control end b4 of the controller 5; the voltage detection circuit 4 is used for detecting the level of a transmission signal on a firing line and the power supply voltage on a power supply line in the working mode of the whole vehicle, receiving a sleep instruction issued by the controller 5 in the working mode of the whole vehicle and entering sleep; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
the backup battery charging circuit 6, the backup battery 7 and the backup battery boosting circuit 8 are connected in series in sequence and then connected in parallel to a power supply line; the backup battery charging circuit 6 is arranged close to the storage battery, and a signal control end of the backup battery charging circuit is connected with a fifth signal control end b5 of the controller 5, so that the backup battery charging circuit is used for starting charging operation or interrupting charging operation when receiving a charging start instruction or a charging pause instruction issued by the controller 5 and entering sleep when receiving a sleep instruction issued by the controller 5 in the working mode of the whole vehicle; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up; the signal control end of the backup battery 7 is connected with the first signal control end of the backup battery control circuit 9 and used for realizing dual power supply with the storage battery redundancy in the working mode of the whole vehicle; the backup battery boosting circuit 8 is arranged close to the voltage stabilizing power supply circuit 1 and is used for boosting the output voltage of the backup battery 7 in the working mode of the whole vehicle;
the second signal control end of the backup battery control circuit 9 is connected with the sixth signal control end b6 of the controller 5, and is used for detecting the electric quantity of the backup battery 7 in the working mode of the whole vehicle; after receiving a power supply instruction or a cutting instruction issued by the controller 5, controlling the backup battery 7 to output power supply voltage or interrupting the power supply of the backup battery 7 to recover the power supply of the storage battery; entering the sleep mode when a sleep command issued by the controller 5 is received; or when receiving a wake-up command issued by the controller 5 in the vehicle sleep mode, the vehicle is woken up;
at this time, the controller 5 communicates with the vehicle-mounted communication circuit 2, the CAN transceiver 3, the voltage detection circuit 4, the voltage stabilization power supply circuit 1, the backup battery charging circuit 6, and the backup battery control circuit 9, and includes:
a dormancy trigger unit 51, configured to start a dormancy procedure when it is determined that the number of CAN network management messages received and transmitted by the CAN transceiver 3 is smaller than a preset value (e.g., 0) and the level of an ignition line transmission signal detected by the voltage detection circuit 4 is smaller than a preset level threshold (e.g., 4V);
a dual power low power consumption dormancy management unit 52, which is used for issuing corresponding dormancy instructions to make the vehicle-mounted communication circuit 2, the CAN transceiver 3, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 sleep respectively after the dormancy process is started, and issuing corresponding power-off control instructions to the voltage-stabilizing power supply circuit 1 in combination with the dormancy state of the vehicle-mounted communication circuit 2, so that the voltage-stabilizing power supply circuit 1 is powered off after the CAN transceiver 3, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 sleep, and the voltage-stabilizing power supply circuit 1 is powered off after the vehicle-mounted communication circuit 2 is dormant or is powered off and dormant when the vehicle-mounted communication circuit 2 is abnormally dormant, and further after all circuits receiving the dormancy instructions are determined to be normal and corresponding related wake-up information configuration is completed according to the working requirements of the backup battery 7 in the vehicle dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; the working requirement of the backup battery 7 in the vehicle sleep mode is to exit the standby state or keep the standby state. At this time, the wake-up information is first wake-up information that the backup battery 7 exits the standby state or second wake-up information that the backup battery 7 is in the standby state; the first awakening information comprises a remote control instruction for respectively awakening the vehicle-mounted communication circuit 2, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 and a CAN communication instruction for awakening the CAN transceiver 3; the second wake-up information includes a remote control instruction for separately waking up the on-vehicle communication circuit 2, the voltage detection circuit 4, the backup battery charging circuit 6, and the backup battery control circuit 9, a CAN communication instruction for waking up the CAN transceiver 3, and a power supply circuit voltage threshold (e.g., 24V) for performing abnormality detection on the voltage of the power supply line.
In the second embodiment of the present invention, the controller 5 further includes a dual power low power consumption sleep wake-up unit 53, which is used for detecting all configured wake-up information after waking up itself in a sleep mode of the entire vehicle, and when all wake-up information are detected correctly, the vehicle-mounted communication circuit 2, the CAN transceiver 3, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 are respectively woken up by issuing corresponding wake-up instructions, and the voltage stabilization power supply circuit 1 is issued corresponding power-on control instructions in combination with a power supply state between the voltage stabilization power supply circuit 1 and the vehicle-mounted communication circuit 2, so as to ensure that the vehicle-mounted communication circuit 2 is powered by the voltage stabilization power supply circuit 1 before being woken up, and ensure that the CAN transceiver 3, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 are powered by the voltage stabilization power supply circuit 1 after being woken up, and the working mode of the whole vehicle is realized. It should be noted that, since the wake-up message is generated according to the operation requirement of the backup battery 7 in the vehicle sleep mode, the detection content of the wake-up message in the vehicle sleep mode is different. If the standby battery 7 exits the standby state when sleeping, detecting first awakening information; if the backup battery 7 is kept in a standby state while sleeping, the second wake-up information is detected, and the voltage abnormality detection of the power supply line is increased.
In the second embodiment of the present invention, because dual power supplies are used, the controller 5 can detect the electric quantity of the backup battery 7 before forming a dual power supply mechanism, and timely charge the backup battery when the electric quantity does not meet the requirement of the electric quantity of the power supply, so the controller 5 further includes:
the backup power supply charging control unit 54 is configured to, in an entire vehicle operating mode, issue a charging start instruction to the backup battery charging circuit 6 when it is determined that the received electric quantity of the backup battery 7 detected by the backup battery control circuit 9 is smaller than a first preset electric quantity threshold (e.g., 30%), so that the backup battery 7 is charged by the storage battery; or in the entire vehicle working mode, when the received electric quantity of the backup battery detected by the backup battery control circuit 9 is judged to reach the second preset electric quantity threshold value and above (such as 98%), a charging pause instruction is issued to the backup battery charging circuit 6, and the storage battery is interrupted to charge the backup battery 7.
It should be noted that the voltage detection circuit 4 may also detect parameters such as the service life of the backup battery 7, and alarm a detection value exceeding the valid parameter. If the backup battery 7 exceeds the limited life state, short message reminding is carried out.
In the second embodiment of the present invention, on the basis of the original power supply of the storage battery, the backup battery 7 is added to supply power, so that the power supply in the working mode or the sleep mode of the entire vehicle needs to be managed, and the controller 5 further includes:
the main/standby power supply first switching mode unit 55 is configured to, in a vehicle operating mode, issue a power supply instruction to the backup battery control circuit 9 to control the backup battery 7 to output a power supply voltage when it is determined that the voltage of the power supply line detected by the received voltage detection circuit 4 is smaller than a preset voltage threshold (e.g., 24V); on the contrary, a cut-off instruction is issued to the backup battery control circuit 9 to enable the backup battery 7 to be in a standby state to cut off the output of the power supply voltage, and the output of the power supply voltage of the storage battery is recovered; in a normal working state, when the voltage value of a power supply line is lower than a preset voltage threshold value, the power supply is switched to the backup battery 7 and the backup battery booster circuit 8 for power supply, and when the voltage value of the power supply line is recovered to be normal, the power supply is switched to a storage battery for power supply, and the backup battery 7 is recovered to be in a standby state;
the main/standby power supply second switching mode unit 56 is configured to, in a complete vehicle sleep mode, when the standby battery 7 is in a standby state, issue a power supply instruction to the standby battery control circuit 9 after wake-up to control the standby battery 7 to output a power supply voltage if it is determined that the voltage of the power supply line detected after wake-up of the voltage detection circuit 4 does not reach a power supply circuit voltage threshold (e.g., 24V), that is, when the standby state of the standby battery 7 is maintained under the sleep state, and after detecting that the voltage of the power supply line is abnormal, directly wake-up and switch the controller 5 to the standby battery 7 to operate.
In the second embodiment of the present invention, a working principle of the system for implementing low power consumption vehicle-mounted communication management is that, in a working mode of the entire vehicle, the controller 5 first determines whether to enter a sleep process by using the ignition wire level collected by the voltage detection circuit 4 and the number of the CAN network management messages received and transmitted by the CAN transceiver 3, and the two processes are either one of them. Secondly, once the two conditions that the level of the ignition wire is lower than the preset level threshold value and the number of the network management messages is smaller than the preset value are simultaneously met, the ignition wire enters a sleep process, the controller 5 issues a sleep instruction to each circuit, and simultaneously issues a corresponding power-off control instruction to the voltage-stabilizing power supply circuit 1 to control the voltage-stabilizing power supply circuit 1 to orderly close the power supply of each circuit. Then, the controller 5 waits for the vehicle-mounted communication circuit 2 to enter a sleep state, and if the vehicle-mounted communication circuit 2 is detected to be abnormally sleep, the controller 5 closes the voltage-stabilizing power supply circuit 1 to supply power to the vehicle-mounted communication circuit 2; and if the sleep of the vehicle-mounted communication circuit 2 is normal, keeping the power supply of the vehicle-mounted communication circuit 2. Finally, after confirming that all circuits (including functional modules) receiving the sleep instruction enter the sleep state, the controller 5 configures corresponding wake-up information (a sleep holding pin, a first wake-up source formed by a remote control instruction and a CAN communication instruction or a second wake-up source formed by a remote control instruction, a CAN communication instruction and a voltage threshold of a power supply circuit for anomaly detection) according to the working requirement of the whole vehicle sleep mode of the backup battery 7, and after the configuration is completed, the controller 5 enters the sleep state to realize entering the whole vehicle sleep mode.
In the vehicle sleep mode, the controller 5 first starts detection of all wakeup information. Secondly, when the controller 5 detects that the wake-up information is correct, the controller 5 detects the power supply state of the vehicle-mounted communication circuit 2, and directly sends a wake-up instruction if no abnormality occurs, so that the corresponding function of the vehicle-mounted communication circuit 2 is woken up to work, and meanwhile, the controller also sends wake-up instructions to other dormant circuits, so that the corresponding functions of other circuits are woken up to work. Finally, if the controller 5 detects that the power supply state of the vehicle-mounted communication circuit 2 is abnormal, the voltage-stabilizing power supply circuit 1 CAN firstly supply power to the vehicle-mounted communication circuit 2 and then wake up the vehicle-mounted communication circuit 2 to realize corresponding functional work, namely, the vehicle-mounted communication circuit 2 is ensured to be supplied with power by the voltage-stabilizing power supply circuit 1 before the vehicle-mounted communication circuit 2 is woken up, and the CAN transceiver 3, the voltage detection circuit 4, the backup battery charging circuit 6 and the backup battery control circuit 9 are ensured to be supplied with power by the voltage-stabilizing power supply circuit 1 after being woken up, so that the vehicle working mode is realized.
Therefore, the working principle of the system for realizing low-power-consumption vehicle-mounted communication management in the second embodiment of the invention in the whole vehicle working mode is different from that of the system for realizing low-power-consumption vehicle-mounted communication management in the first embodiment of the invention, and specifically comprises the following steps: if the function of the backup battery 7 needs to be closed in the sleep state in the working mode of the whole vehicle, the backup battery 7 needs to be controlled to exit the standby state before entering the sleep state, and the sleep power failure and the configuration of first awakening information of the newly added backup battery charging circuit 6 and the backup battery control circuit 9 are also needed; if the backup battery 7 is kept in a standby state in the working mode of the whole vehicle, only the newly added backup battery charging circuit 6 and the backup battery control circuit 9 need to be configured with the sleep power-off and second wake-up information.
The system for implementing low-power-consumption vehicle-mounted communication management in the second embodiment of the invention is different from the working principle of the system for implementing low-power-consumption vehicle-mounted communication management in the first embodiment of the invention in a whole vehicle sleep mode, and specifically comprises the following steps: if the backup battery 7 is kept in a standby state in the sleep mode of the whole vehicle, the controller 5 can directly wake up and switch to the backup battery 7 to work and wake up the newly added backup battery charging circuit 6 and the backup battery control circuit 9 after detecting that the voltage of the power supply line is abnormal by whether the voltage of the power supply line reaches the voltage threshold of the power supply circuit.
As shown in fig. 6, corresponding to a system for implementing low-power-consumption vehicle-mounted communication management in the first embodiment of the present invention, in the third embodiment of the present invention, a method for implementing low-power-consumption vehicle-mounted communication management is provided, which is implemented in the system for implementing low-power-consumption vehicle-mounted communication management in the first embodiment of the present invention, and the method includes the following steps:
step S10, the controller starts a sleep process when the controller judges that the number of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
step S11, after the controller starts the dormancy process, it sends the corresponding dormancy order to make the vehicle-mounted communication circuit, CAN transceiver and voltage detection circuit dormant respectively, and combines the dormancy state of the vehicle-mounted communication circuit, and sends the corresponding power-off control order to the voltage-stabilizing power supply circuit, to make the voltage-stabilizing power supply circuit powered off after the CAN transceiver and the voltage detection circuit are dormant, and to make the voltage-stabilizing power supply circuit keep power supply after the vehicle-mounted communication circuit is dormant or make forced power-off dormancy when the vehicle-mounted communication circuit is abnormal in dormancy, and further to confirm that all the circuits receiving the dormancy order are normal and the corresponding related awakening information is configured, it enters into dormancy itself, to realize entering into the whole vehicle dormancy mode.
Wherein the method further comprises:
under the whole vehicle sleep mode, the controller detects all configured awakening information after awakening the controller, and sends corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be awakened respectively when all the awakening information is detected correctly, and the controller combines the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit to send corresponding power-on control instructions to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened, and ensure that the CAN transceiver and the voltage detection circuit are powered by the voltage-stabilizing power supply circuit after being awakened, thereby realizing entering the whole vehicle working mode.
The wake-up information comprises a remote control instruction for respectively waking up the vehicle-mounted communication circuit and the voltage detection circuit and a CAN communication instruction for waking up the CAN transceiver.
As shown in fig. 7, in a fourth embodiment of the present invention, another method for implementing low power consumption vehicle-mounted communication management is provided, which is implemented in a system for implementing low power consumption vehicle-mounted communication management in a third embodiment of the present invention, corresponding to a system for implementing low power consumption vehicle-mounted communication management in the second embodiment of the present invention, and the method includes the following steps:
step S20, the controller starts a sleep process when the controller judges that the number of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
step S21, after the controller starts the dormancy process, it sends the corresponding dormancy order to make the vehicle-mounted communication circuit, CAN transceiver, voltage detection circuit, backup battery charging circuit and backup battery control circuit sleep separately, and combines the dormancy state of the vehicle-mounted communication circuit, it sends the corresponding power-off control order to the voltage-stabilizing power supply circuit, makes the voltage-stabilizing power supply circuit power-off after the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit sleep, and makes the voltage-stabilizing power supply circuit power-off when the vehicle-mounted communication circuit sleep and keeps power supply or the vehicle-mounted communication circuit sleep abnormally, and further waits to determine that all the circuits receiving the dormancy order sleep normally and completes the corresponding wake-up information configuration according to the work demand of the backup battery in the vehicle dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; and the working requirement of the backup battery in the whole vehicle sleep mode is to exit the standby state or keep the standby state.
Wherein the method further comprises:
in the whole vehicle sleep mode, the controller detects all configured awakening information after being awakened, and when all the awakening information is detected correctly, corresponding awakening instructions are issued to enable the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit to be awakened respectively, and the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit is combined to issue a corresponding power-on control instruction to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before the vehicle-mounted communication circuit is awakened, and ensuring that the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are powered by the voltage stabilizing power supply circuit after being awakened, so as to realize entering the working mode of the whole vehicle.
The wake-up information is first wake-up information when the backup battery exits the standby state or second wake-up information when the backup battery is in the standby state; wherein,
the first awakening information comprises a remote control instruction for respectively awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit and a CAN communication instruction for awakening the CAN transceiver;
the second awakening information comprises remote control instructions for awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit respectively, CAN communication instructions for awakening the CAN transceiver and a power supply circuit voltage threshold value for performing abnormal detection on the voltage of a power supply circuit.
The embodiment of the invention has the following beneficial effects:
1. when the automobile sleep mode is judged, the number of CAN network management messages transmitted and received by the CAN transceiver and the level condition of an ignition wire transmission signal detected by the voltage detection circuit are judged, so that the problem of abnormal sleep caused by abnormal automobile conditions is avoided, and the risk of false triggering of the automobile sleep mode in the prior art is effectively avoided;
2. according to the invention, the dormancy state detection of the vehicle-mounted communication circuit (such as a 4G/5G vehicle-mounted communication module) is added in the dormancy process, so that the phenomenon that the current exceeds the standard in the dormancy state of the whole vehicle due to the occurrence of the dormancy abnormality of the vehicle-mounted communication circuit is prevented, the low-power-consumption power supply management in the dormancy state of the vehicle-mounted communication circuit is realized, and the risk of the dormancy abnormality of the vehicle-mounted communication circuit in the vehicle dormancy mode in the prior art is effectively avoided;
3. the invention also adds the power management of the low power consumption of the vehicle-mounted communication circuit in the dormant state when the vehicle-mounted communication circuit is provided with the backup battery.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (12)

1. A system for realizing low-power-consumption vehicle-mounted communication management is characterized by comprising a voltage-stabilizing power supply circuit, a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit and a controller; wherein,
the voltage input end of the voltage-stabilizing power supply circuit is connected with a storage battery of an automobile, and the voltage output end of the voltage-stabilizing power supply circuit is connected with the voltage end of the vehicle-mounted communication circuit, the voltage end of the CAN transceiver, the voltage end of the voltage detection circuit and the voltage end of the controller;
the controller with on-vehicle communication circuit, CAN transceiver, voltage detection circuit and steady voltage supply circuit all communicate, and it includes:
the dormancy triggering unit is used for starting a dormancy process when the number of CAN network management messages transmitted and received by the CAN transceiver is judged to be smaller than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is judged to be smaller than a preset level threshold value;
the single-power-supply low-power-consumption dormancy management unit is used for issuing a corresponding dormancy instruction to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be dormant respectively after a dormancy process is started, issuing a corresponding power-off control instruction to the voltage-stabilizing power supply circuit by combining the dormancy state of the vehicle-mounted communication circuit, enabling the voltage-stabilizing power supply circuit to be powered off after the CAN transceiver and the voltage detection circuit are dormant, enabling the voltage-stabilizing power supply circuit to be powered off forcibly when the vehicle-mounted communication circuit is kept powered on or the vehicle-mounted communication circuit is abnormally dormant, and further enabling the voltage-stabilizing power supply circuit to enter a dormancy mode after all circuits receiving the dormancy instruction are determined to be normally dormant and corresponding related awakening information is configured, so that the whole vehicle dormancy mode is achieved.
2. The system for enabling low power consumption vehicle communication management according to claim 1, wherein said controller further comprises:
the single-power-supply low-power-consumption dormancy awakening unit is used for detecting all configured awakening information after the single-power-supply low-power-consumption dormancy awakening unit is awakened in an entire vehicle dormancy mode, issuing corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be awakened respectively when all the awakening information is detected correctly, issuing corresponding power-on control instructions to the voltage-stabilizing power supply circuit in combination with a power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit, ensuring that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened, ensuring that the CAN transceiver and the voltage detection circuit are powered by the voltage-stabilizing power supply circuit after being awakened, and achieving the entire vehicle working mode.
3. The system for implementing low power consumption vehicle communication management of claim 2, wherein the wake-up message comprises a remote control command for separately waking up the vehicle communication circuit and the voltage detection circuit and a CAN communication command for waking up the CAN transceiver.
4. A system for realizing low-power-consumption vehicle-mounted communication management is characterized by comprising a voltage-stabilizing power supply circuit, a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit, a controller, a backup battery charging circuit, a backup battery boosting circuit and a backup battery control circuit; wherein,
the voltage input end of the voltage-stabilizing power supply circuit is connected with a storage battery of an automobile, the voltage output end of the voltage-stabilizing power supply circuit is respectively connected with the voltage end of the vehicle-mounted communication circuit, the voltage end of the CAN transceiver, the voltage end of the voltage detection circuit, the voltage end of the controller, the voltage end of the backup battery charging circuit and the voltage end of the backup battery control circuit,
the backup battery charging circuit, the backup battery and the backup battery booster circuit are sequentially connected in series and then are connected in parallel to a power supply line connected between the storage battery and the voltage-stabilizing power supply circuit; the backup battery charging circuit and the backup battery control circuit are both communicated with the controller; the backup battery is in communication with the backup battery control circuit;
the controller with on-vehicle communication circuit, CAN transceiver, voltage detection circuit and steady voltage supply circuit all communicate, and it includes:
the dormancy triggering unit is used for starting a dormancy process when the number of CAN network management messages transmitted and received by the CAN transceiver is judged to be smaller than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is judged to be smaller than a preset level threshold value;
a dual power low power consumption dormancy management unit, which is used for issuing a corresponding dormancy instruction to make the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit respectively dormant after a dormancy process is started, and issuing a corresponding power-off control instruction to the voltage-stabilizing power supply circuit in combination with the dormant state of the vehicle-mounted communication circuit to make the voltage-stabilizing power supply circuit powered off after the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are dormant, and make the voltage-stabilizing power supply circuit powered off forcibly or powered off and dormant when the vehicle-mounted communication circuit is abnormally dormant after the vehicle-mounted communication circuit is dormant, and further after all circuits receiving the dormancy instruction are determined to be normal and corresponding related awakening information configuration is completed according to the working requirement of the backup battery in the dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; and the working requirement of the backup battery in the whole vehicle sleep mode is to exit the standby state or keep the standby state.
5. The system for implementing low power consumption vehicle mounted communication management of claim 4, wherein the controller further comprises:
a dual power low power consumption dormancy awakening unit, which is used for detecting all configured awakening information after being awakened in a complete vehicle dormancy mode, issuing corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit to be awakened respectively when all the awakening information is detected correctly, and issuing corresponding power-on control instructions for the voltage-stabilizing power supply circuit in combination with the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened and ensure that the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are powered by the voltage-stabilizing power supply circuit after being awakened, and the working mode of the whole vehicle is realized.
6. The system for implementing low power consumption vehicle mounted communication management of claim 5, wherein the controller further comprises:
the backup power supply charging control unit is used for issuing a charging starting instruction to the backup battery charging circuit to enable the storage battery to charge the backup battery when the received electric quantity of the backup battery detected by the backup battery control circuit is smaller than a first preset electric quantity threshold value under the working mode of the whole vehicle; under the whole vehicle working mode, when the electric quantity of the backup battery detected by the backup battery control circuit reaches a second preset electric quantity threshold value, the backup battery charging circuit issues a charging pause instruction, and the storage battery is interrupted to charge the backup battery.
7. The system for implementing low-power-consumption vehicle-mounted communication management of claim 6, wherein the wake-up message is a first wake-up message indicating that the backup battery exits from a standby state or a second wake-up message indicating that the backup battery is in a standby state; wherein,
the first awakening information comprises a remote control instruction for respectively awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit and a CAN communication instruction for awakening the CAN transceiver;
the second awakening information comprises remote control instructions for awakening the vehicle-mounted communication circuit, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit respectively, CAN communication instructions for awakening the CAN transceiver and a power supply circuit voltage threshold value for performing abnormal detection on the voltage of a power supply circuit.
8. The system for implementing low power consumption vehicle mounted communication management of claim 6, wherein the controller further comprises:
the main/standby power supply first switching mode unit is used for sending a power supply instruction to the backup battery control circuit to control the backup battery to output power supply voltage when the voltage of the power supply line detected by the voltage detection circuit is judged to be smaller than a preset voltage threshold value under the working mode of the whole vehicle; otherwise, a cutting instruction is issued to the backup battery control circuit to enable the backup battery to be in a standby state so as to cut off the output of the power supply voltage, and the output of the power supply voltage of the storage battery is recovered;
and the main/standby power supply second switching mode unit is used for sending a power supply instruction to the awakened backup battery control circuit to control the backup battery to output power supply voltage if the voltage of a power supply line detected after the voltage detection circuit is awakened does not reach the voltage threshold of the power supply circuit when the backup battery is in a standby state under the sleep mode of the whole vehicle.
9. A method for implementing low-power-consumption vehicular communication management, which is implemented in the system for implementing low-power-consumption vehicular communication management of claim 3, the method comprising the steps of:
the controller starts a dormancy process when judging that the quantity of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
the controller sends corresponding sleep instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to sleep respectively after a sleep process is started, sends corresponding power-off control instructions to the voltage-stabilizing power supply circuit in combination with the sleep state of the vehicle-mounted communication circuit, enables the voltage-stabilizing power supply circuit to be powered off after the CAN transceiver and the voltage detection circuit sleep, enables the voltage-stabilizing power supply circuit to maintain power supply after the vehicle-mounted communication circuit sleeps or to conduct forced power-off sleep when the vehicle-mounted communication circuit is abnormally sleeped, further enables all circuits receiving the sleep instructions to sleep normally after all circuits are determined to be in sleep normally and corresponding related awakening information is configured, and then enables the circuits to enter the sleep mode to enter the whole vehicle sleep mode.
10. The method of implementing low power vehicular communication management of claim 9, the method further comprising:
under the whole vehicle sleep mode, the controller detects all configured awakening information after awakening the controller, and sends corresponding awakening instructions to enable the vehicle-mounted communication circuit, the CAN transceiver and the voltage detection circuit to be awakened respectively when all the awakening information is detected correctly, and the controller combines the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit to send corresponding power-on control instructions to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before being awakened, and ensure that the CAN transceiver and the voltage detection circuit are powered by the voltage-stabilizing power supply circuit after being awakened, thereby realizing entering the whole vehicle working mode.
11. A method for implementing low-power-consumption vehicular communication management, which is implemented in the system for implementing low-power-consumption vehicular communication management according to any one of claims 5-8, the method comprising the steps of:
the controller starts a dormancy process when judging that the quantity of CAN network management messages transmitted and received by the CAN transceiver is less than a preset value and the level of an ignition wire transmission signal detected by the voltage detection circuit is less than a preset level threshold value;
after the dormancy process is started, the controller issues corresponding dormancy instructions to enable a vehicle-mounted communication circuit, a CAN transceiver, a voltage detection circuit, a backup battery charging circuit and a backup battery control circuit to be dormant respectively, and in combination with the dormancy state of the vehicle-mounted communication circuit, a corresponding power-off control instruction is issued to a voltage-stabilizing power supply circuit, so that the voltage-stabilizing power supply circuit is powered off after the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are dormant, the voltage-stabilizing power supply circuit is powered off forcibly when the vehicle-mounted communication circuit is kept powered on or the vehicle-mounted communication circuit is abnormally dormant, and further after all circuits receiving the dormancy instructions are determined to be normal and corresponding related awakening information configuration is completed according to the work requirement of the backup battery in the vehicle dormancy mode, the vehicle enters the sleep mode to realize the sleep mode of the whole vehicle; and the working requirement of the backup battery in the whole vehicle sleep mode is to exit the standby state or keep the standby state.
12. The method of implementing low power vehicular communication management of claim 11, the method further comprising:
in the whole vehicle sleep mode, the controller detects all configured awakening information after being awakened, and when all the awakening information is detected correctly, corresponding awakening instructions are issued to enable the vehicle-mounted communication circuit, the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit to be awakened respectively, and the power supply state between the voltage-stabilizing power supply circuit and the vehicle-mounted communication circuit is combined to issue a corresponding power-on control instruction to the voltage-stabilizing power supply circuit so as to ensure that the vehicle-mounted communication circuit is powered by the voltage-stabilizing power supply circuit before the vehicle-mounted communication circuit is awakened, and ensuring that the CAN transceiver, the voltage detection circuit, the backup battery charging circuit and the backup battery control circuit are powered by the voltage stabilizing power supply circuit after being awakened, so as to realize entering the working mode of the whole vehicle.
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