CN112248966A - Anti-theft method and system based on electronic gear shifter - Google Patents
Anti-theft method and system based on electronic gear shifter Download PDFInfo
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- CN112248966A CN112248966A CN202011097071.XA CN202011097071A CN112248966A CN 112248966 A CN112248966 A CN 112248966A CN 202011097071 A CN202011097071 A CN 202011097071A CN 112248966 A CN112248966 A CN 112248966A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
- B60R25/06—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor operating on the vehicle transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
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Abstract
The invention provides an anti-theft method and an anti-theft system based on an electronic gear shifter, and belongs to the technical field of automobiles. It has solved the lower problem of this anti-theft system theftproof risk of current. The anti-theft method based on the electronic gear shifter comprises the following steps: the vehicle-mounted controller sends out a password authentication request according to the identity key of the user; the electronic gear shifter generates a random code when receiving a password authentication request, and then combines the random code with an internal password I to form a password authentication signal and sends the password authentication signal to the vehicle-mounted controller, and the vehicle-mounted controller processes the password authentication signal I and feeds back a password authentication signal II; the electronic gear shifter performs password comparison and verification on the fed-back password authentication signal II, and when the verification result meets the unlocking condition, the P-gear parking mechanism performs gear unlocking to realize normal gear switching; otherwise, the P-gear parking mechanism locks gear switching. An anti-theft system based on the electronic gear shifter is also provided. The invention can reduce the risk of vehicle theft.
Description
Technical Field
The invention belongs to the technical field of automobiles, and relates to an anti-theft method and an anti-theft system based on an electronic gear shifter.
Background
The anti-theft device for automobile is installed on the automobile and connected with the fittings or circuit on the automobile to prevent the automobile from being stolen or increase the difficulty of stealing the automobile. The early automobile anti-theft device is mainly a mechanical anti-theft device, and a mechanical anti-theft system mainly depends on locking a clutch, a brake, an accelerator, a steering wheel or a transmission gear and other important parts of an automobile to achieve the anti-theft purpose. However, because the electronic anti-theft system is troublesome to disassemble and assemble every time, the electronic anti-theft system is not convenient enough and has poor safety, cannot resist the invasion of a heavy theft tool and cannot send alarm information when being invaded, and the limitations cause the electronic anti-theft system to be widely replaced.
The electronic anti-theft system can monitor the actions of a vehicle door, a trunk, an engine compartment cover and even an ignition key through communication between the electronic control units, and has the sound and light alarm functions. After the vehicle is completely locked, once the system detects that the monitored objects such as a vehicle door or a trunk and the like have abnormal actions, an alarm signal is sent out through the sounding of an anti-theft horn and the flickering of external light, and the starting of an engine is prevented. However, if the owner key is lost or forgets to lock the vehicle, anyone can start the engine, so that the abnormal action of the object cannot be monitored, and the risk of vehicle theft cannot be prevented.
In order to solve the existing problems, the existing Chinese patent document discloses an automobile anti-theft system, wherein the automobile comprises an identity verification module, a behavior detection module, a positioning module and a first communication module; the identity authentication module is used for authenticating the identity of the user; the behavior detection module is used for detecting user behaviors. When the user behavior is consistent with the preset behavior, starting the vehicle according to the user operation, and when the user behavior is inconsistent with the preset behavior, starting the positioning module; the positioning module is used for positioning the vehicle and generating positioning data; the first communication module is used for sending the positioning data generated by the positioning module to the server; the behavior detection module is also used for establishing communication connection with the monitoring module through the first communication module; the monitoring module is used for generating an alarm after the communication connection established with the behavior detection module fails. Although the automobile anti-theft system can still obtain the position of the automobile in time after the automobile is stolen, the automobile anti-theft system still has the following defects:
1. the behavior judgment process is complex, the operation sequence of the user on the vehicle cannot be changed all the time, and the vehicle cannot be started due to the fact that one action of the user is not corresponding to the action of the user in the judgment process, so that inconvenience is brought to the user.
2. The operation sequence of pulling a hand brake, buckling a safety belt, stepping a foot brake, igniting and starting and the like is judged, if the operation sequence of a stealer is just consistent with the operation sequence, the anti-theft effect is difficult to play, the anti-theft system is easy to damage, so that the anti-theft effect cannot be played, and the risk that the vehicle is stolen is higher.
Disclosure of Invention
The invention aims to provide an anti-theft method based on an electronic gear shifter and a system thereof aiming at the problems in the prior art, and the technical problems to be solved are as follows: how to reduce the risk of vehicle theft.
The purpose of the invention can be realized by the following technical scheme: an anti-theft method based on an electronic gear shifter comprises the following steps:
firstly, a vehicle-mounted controller sends out a password authentication request according to an identity key of a user;
step two, the electronic gear shifter generates a random code when receiving a password authentication request, and then combines the random code with an internal password I to form a password authentication signal and sends the password authentication signal to the vehicle-mounted controller, and the vehicle-mounted controller processes the password authentication signal I and feeds back a password authentication signal II to the electronic gear shifter;
thirdly, the electronic gear shifter compares and verifies the passwords of the fed-back password authentication signal II, and when a verification result meets an unlocking condition, a P-gear unlocking request signal is sent out, and the P-gear parking mechanism executes gear unlocking according to the received P-gear unlocking request signal to realize normal gear switching; otherwise, a P-gear unlocking request signal cannot be sent, and the P-gear parking mechanism locks gear switching.
The anti-theft method based on the electronic gear shifter has the working principle that: each vehicle is correspondingly provided with an identity key capable of sensing with a vehicle-mounted controller, when a user wants to drive the vehicle, the vehicle-mounted controller senses the identity key of the user and outputs a password authentication request to the electronic gear shifter according to the identity key of the user, when the electronic gear shifter receives the password authentication request, the electronic gear shifter sends a password authentication signal I with a random code and a password I to the vehicle-mounted controller, the vehicle-mounted controller processes the password authentication signal I and feeds back a password authentication signal II to the electronic gear shifter after receiving the password authentication request, the electronic gear shifter compares and verifies the received password authentication signal II, once the password comparison and verification are successful, an unlocking condition is met, the electronic gear shifter sends a P-gear unlocking request signal to the P-gear parking mechanism, and the P-gear parking mechanism executes gear unlocking according to the received P-gear unlocking request signal, when the electronic gear shifter has the gear shifting intention, the electronic gear shifter carries out normal transmission R/N/D gear switching; otherwise, the electronic gear shifter does not send a P-gear unlocking request signal, the electronic gear shifter is pushed to shift a gear knob, and the R/N/D gear switching still cannot be normally carried out, namely the P-gear parking mechanism is still in a gear locking state.
In the anti-theft method based on the electronic gear shifter, in the first step, the vehicle-mounted controller senses the identity key of the user in real time and monitors the vehicle ignition signal, when the vehicle ignition starting signal is monitored but the identity key signal of the user is not sensed, the password authentication request is not output, and the P-gear parking mechanism is kept locked; and when an identity key signal of the user is sensed, a password authentication request is output to the electronic gear shifter. The vehicle-mounted controller senses the identity key of the user in real time, and when the identity key is sensed, a password authentication request is output to the electronic gear shifter; when the identity key information of a user is not sensed but a vehicle ignition starting signal is monitored, a password authentication request is not output, the P-gear parking mechanism still keeps gear locking, normal gear switching of the vehicle can be guaranteed only when the identity key is verified successfully, and the vehicle anti-theft effect is improved.
In the above anti-theft method based on the electronic gear shifter, in the first step, the vehicle-mounted controller starts timing when monitoring a vehicle ignition starting signal, and sends out an alarm signal when the timing time reaches a preset value and an identity key signal of a user is not sensed yet. The timer is arranged in the vehicle-mounted controller and used for timing the sensing time of the identity key signal and ensuring the accuracy of sending the alarm signal.
In the above anti-theft method based on the electronic gear shifter, in the second step, the operation of the vehicle-mounted controller processing the first password authentication signal includes:
the vehicle-mounted controller generates a random code encryption code II;
the vehicle-mounted controller processes a first password authentication signal with a random code encryption code I sent by the electronic gear shifter, performs password comparison verification on the first password and a second password, and when the verification is successful, the vehicle-mounted controller calculates an encryption code on the second password by combining an internal secret key to obtain a second password authentication signal of a third password and feeds the second password authentication signal back to the electronic gear shifter; and when the verification is unsuccessful, the P-gear parking mechanism keeps locking. The vehicle-mounted controller can generate a random code encryption code II while sending the password authentication request signal, when the identity key is a key matched with the vehicle-mounted controller, the password II is consistent with the password I generated by the electronic gear shifter, namely, the verification is successful, and when the verification is successful, the encryption code is calculated according to an internal secret key.
In the third step, the electronic gear shifter receives a second password authentication signal fed back by the vehicle-mounted controller, and simultaneously calculates and encrypts a first password by combining an internal secret key to obtain a fourth password, compares and verifies the fourth password with a third password fed back by the vehicle-mounted controller, and sends a P-gear unlocking request signal when verification is successful, and the P-gear parking mechanism executes gear unlocking according to the P-gear unlocking request signal to realize normal gear switching; conversely, the P-range parking mechanism remains locked. The electronic gear shifter further compares and verifies the passwords, and the reliability of the anti-theft function of the P-gear parking mechanism is effectively improved.
In the above anti-theft method based on the electronic gear shifter, in the third step, the electronic gear shifter outputs an alarm signal when the password comparison and verification are unsuccessful. The alarm signal can be sent to the vehicle-mounted alarm for sound alarm, and also can be sent to the user terminal through the vehicle-mounted controller, the user terminal comprises a mobile phone, an ipad and the like of a vehicle owner, and the alarm signal can be notified to the vehicle owner through a short message, a telephone and the like.
In the above anti-theft method based on the electronic gear shifter, in the third step, after the P-gear parking mechanism performs gear unlocking, the vehicle-mounted controller monitors a door signal of a driving side, when a door opening signal is monitored, the vehicle-mounted controller outputs a P-gear parking locking signal to the electronic gear shifter, the electronic gear shifter outputs a signal to enable the P-gear parking mechanism to perform gear locking, and the step one is returned to for circulation. Whether the P gear is locked or not is judged according to a driving side door signal, the condition that the vehicle is stolen due to temporary leaving of the engine in a still working state is avoided, and the risk that the vehicle is stolen is reduced.
In the above-mentioned anti-theft method based on the electronic shifter, the P-range parking mechanism is integrated in the transmission case for locking the movement of the shift lever of the electronic shifter.
In the above anti-theft method based on the electronic gear shifter, the vehicle-mounted controller is a keyless entry and start system.
In the above anti-theft method based on the electronic gear shifter, the vehicle-mounted controller is a vehicle body controller.
An anti-theft system based on an electronic gear shifter comprises a P-gear parking mechanism used for locking the movement of a gear shift lever, an identity key used for generating an identity authentication signal, a vehicle-mounted controller used for generating a password authentication request according to the identity key and an electronic gear shifter used for generating a password authentication signal I by combining an internal password and generating a random code according to the password authentication request, wherein the vehicle-mounted controller is in wireless induction connection with the identity key, is in communication connection with the electronic gear shifter, is connected with the P-gear parking mechanism, and is used for processing the password authentication signal I transmitted by the electronic gear shifter and feeding back a password authentication signal II to the electronic gear shifter; the electronic gear shifter is used for carrying out password comparison and verification on a password authentication signal II fed back by the vehicle-mounted controller and outputting a P-gear unlocking request signal when the verification is successful; and the P-gear parking mechanism is used for executing gear unlocking according to the P-gear unlocking request signal.
The working principle of the anti-theft system based on the electronic gear shifter is as follows: each vehicle is correspondingly provided with an identity key capable of sensing with a vehicle-mounted controller, when a user wants to drive the vehicle, the vehicle-mounted controller receives an identity authentication signal transmitted by the identity key and outputs a password authentication request to the electronic gear shifter according to the identity key of the user, when the electronic gear shifter receives the password authentication request, the electronic gear shifter sends a password authentication signal I with a random code and a password I to the vehicle-mounted controller, the vehicle-mounted controller processes the password authentication signal I and feeds back the password authentication signal II to the electronic gear shifter, the electronic gear shifter compares and verifies the received password authentication signal II, once the password comparison and verification are successful, the electronic gear shifter sends a P-gear unlocking request signal to the P-gear parking mechanism, the P-gear parking mechanism executes gear unlocking according to the received P-gear unlocking request signal, and when the electronic gear shifter has a gear shifting intention, the electronic shifter will normally transmit the R/N/D gear shift; otherwise, the electronic gear shifter does not send a P-gear unlocking request signal, the electronic gear shifter is pushed to shift a gear knob, R/N/D gear switching cannot be normally carried out, namely the P-gear parking mechanism is still in a gear locking state, the anti-theft system can normally shift gears only when password authentication is successful, otherwise, the anti-theft system is always locked in the P gear, so that the vehicle cannot normally run due to locking of gears even after ignition starting, the trouble of positioning and tracking after the vehicle is stolen is avoided, the anti-theft effect of the vehicle is good, and the risk of vehicle theft is reduced to the maximum extent.
In the above anti-theft system based on the electronic gear shifter, the anti-theft system based on the electronic gear shifter further includes a CAN bus, and both the electronic gear shifter and the vehicle-mounted controller are connected to the CAN bus. The application of the CAN bus CAN reduce the wiring harness.
In the above anti-theft system based on the electronic gear shifter, the anti-theft system based on the electronic gear shifter further includes a transmission control unit, the electronic gear shifter is connected with the transmission control unit through a CAN bus, and the transmission control unit is connected with the P-gear parking mechanism. The gearbox control unit receives a P-gear parking locking signal sent by the electronic gear shifter or the vehicle-mounted controller through the CAN bus and outputs the P-gear parking locking signal to the P-gear parking mechanism, and the P-gear parking mechanism executes gear locking or locking.
In the above-mentioned anti-theft system based on the electronic gear shifter, the P-gear parking mechanism is integrated into the electronic gear shifter.
In the above anti-theft system based on the electronic gear shifter, the onboard controller is a keyless entry and start system or a vehicle body controller.
Compared with the prior art, the anti-theft method and the system based on the electronic gear shifter have the following advantages:
1. according to the invention, the existing P-gear parking mechanism is utilized, password verification authentication is carried out through the electronic gear shifter and the vehicle-mounted controller, the normal gear shifting function of the P/R/N/D gear can be realized only when the password verification is successful, otherwise, gear shifting control locking is realized, the electronic anti-theft locking function and the alarm function of the P-gear parking mechanism are realized, and the risk of vehicle theft is effectively reduced.
2. The password verification authentication of the invention comprises password verification authentication of the vehicle-mounted controller and password verification authentication of the electronic gear shifter, and the P-gear parking mechanism can execute gear unlocking and normally switch gears only when both the password verification authentication and the password verification authentication are successfully verified, thereby effectively improving the reliability of vehicle theft prevention.
Drawings
Fig. 1 is a control flow chart of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
In the figure, 1, a vehicle-mounted controller; 2. an electronic shifter; 3. an identity key; 4. a CAN bus; 5. a transmission control unit; 6. p keeps off parking mechanism.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the anti-theft method based on the electronic gear shifter comprises the following steps:
step one, when the vehicle-mounted controller 1 does not sense the signal of the identity key 3 of the user, a password authentication request is not output, and the P-gear parking mechanism 6 is kept locked; when sensing an identity key 3 signal of a user, the vehicle-mounted controller 1 sends a password authentication request according to the identity key 3 of the user;
step two, the electronic gear shifter 2 generates a random code when receiving a password authentication request, and then combines the random code with an internal password I to form a password authentication signal and sends the password authentication signal to the vehicle-mounted controller 1, and the vehicle-mounted controller 1 processes the password authentication signal I and feeds back a password authentication signal II to the electronic gear shifter 2;
thirdly, the electronic gear shifter 2 performs password comparison and verification on the fed-back password authentication signal II, and when a verification result meets an unlocking condition, a P-gear unlocking request signal is sent, and the P-gear parking mechanism 6 executes gear unlocking according to the received P-gear unlocking request signal to realize normal gear switching; otherwise, a P-gear unlocking request signal cannot be sent, the P-gear parking mechanism 6 locks the gears to be switched, and the gears cannot be switched normally.
As a preferred scheme, in the first step, the vehicle-mounted controller 1 senses the identity key 3 of the user in real time, simultaneously monitors a vehicle ignition signal, does not output a password authentication request when monitoring the vehicle ignition starting signal and does not sense the identity key 3 signal of the user, and the P-gear parking mechanism 6 keeps locking; when the signal of the identity key 3 of the user is sensed, a password authentication request is output to the electronic gear shifter 2. The identity key 3 may be a card or other articles that can be conveniently carried by the user.
Preferably, in the step one, the vehicle-mounted controller 1 starts timing when monitoring a vehicle ignition starting signal, and sends an alarm signal when the timing time reaches a preset value and the identity key 3 signal of the user is not sensed yet. The timer is arranged in the vehicle-mounted controller 1 and used for timing the sensing time of the identity key 3 signal and ensuring the accuracy of sending out the alarm signal. The preset value can be set to 1min-3 min.
Preferably, in the step two, the operation of the vehicle-mounted controller 1 for processing the first password authentication signal includes:
the vehicle-mounted controller 1 generates a random code encryption code II;
the vehicle-mounted controller 1 processes a password authentication signal I with a random code encryption code I sent by the electronic gear shifter 2, performs password comparison verification on the password I and a password II, and when the verification is successful, the vehicle-mounted controller 1 calculates the encryption code on the password II by combining an internal secret key to obtain a password authentication signal II of a password III and feeds the password authentication signal II back to the electronic gear shifter 2; the P-range parking mechanism 6 remains locked when the verification is unsuccessful. The vehicle-mounted controller 1 can generate a random code encryption code II while sending the password authentication request signal, when the identity key 3 is a key matched with the vehicle-mounted controller 1, the password II is consistent with the password I generated by the electronic gear shifter 2, namely, the verification is successful, and when the verification is successful, the encryption code is calculated according to an internal secret key.
As a preferred scheme, in the third step, the electronic gear shifter 2 calculates an encryption code by combining an internal secret key while receiving a password authentication signal two fed back by the vehicle-mounted controller 1 to obtain a password four, performs password comparison verification on the password four and a password three fed back by the vehicle-mounted controller 1, sends a P-gear unlocking request signal when verification is successful, and the P-gear parking mechanism 6 executes gear unlocking according to the P-gear unlocking request signal to realize normal gear switching; conversely, the P range parking mechanism 6 remains locked. The electronic gear shifter 2 further compares and verifies the passwords, and the reliability of the anti-theft function of the P-gear parking mechanism 6 is effectively improved.
Preferably, in step three, the electronic gear shifter 2 outputs an alarm signal when the password comparison and verification are unsuccessful. The alarm signal can be transmitted to the vehicle-mounted alarm for sound alarm so as to scare away thieves or attract the attention of surrounding people and improve the reliability of vehicle theft prevention; or may be transmitted to the user terminal through the onboard controller 1. The user terminal comprises a mobile phone, an ipad and the like of the owner and can inform the owner of the alarm signal in the modes of short messages, telephones and the like.
Preferably, in the third step, after the P-gear parking mechanism 6 performs gear unlocking, the vehicle-mounted controller 1 monitors a door signal of a driving side, outputs a P-gear parking locking signal to the electronic gear shifter 2 when a door opening signal is monitored, outputs a signal to enable the P-gear parking mechanism 6 to perform gear locking, and returns to the first step for circulation. Whether the P gear is locked or not is judged according to a driving side door signal, the condition that the vehicle is stolen due to temporary leaving of the engine in a still working state is avoided, and the risk that the vehicle is stolen is reduced.
Preferably, the P-range parking mechanism 6 is integrated in the gearbox for locking the movement of the shift lever of the electronic gear shifter 2. Preferably, the vehicle-mounted controller 1 is a keyless entry and start system.
Preferably, the vehicle-mounted controller 1 is a vehicle body controller.
As shown in fig. 2, the electronic gear shifter-based anti-theft system comprises a P-gear parking mechanism 6 for locking the movement of a gear shift lever, an identity key 3 for generating an identity authentication signal, an onboard controller 1 for generating a password authentication request according to the identity key 3, and an electronic gear shifter 2 for generating a random code according to the password authentication request and generating a password authentication signal one by combining an internal password, wherein the onboard controller 1 is in wireless induction connection with the identity key 3, the onboard controller 1 is in communication connection with the electronic gear shifter 2, the electronic gear shifter 2 is connected with the P-gear parking mechanism 6, and the onboard controller 1 is used for processing the password authentication signal one transmitted by the electronic gear shifter 2 and feeding back a password authentication signal two to the electronic gear shifter 2; the electronic gear shifter 2 is used for carrying out password comparison and verification on a password authentication signal II fed back by the vehicle-mounted controller 1 and outputting a P-gear unlocking request signal when the verification is successful; the P-range parking mechanism 6 is configured to execute range unlocking according to a P-range unlocking request signal.
Preferably, the anti-theft system based on the electronic gear shifter further comprises a CAN bus 4, and the electronic gear shifter 2 and the vehicle-mounted controller 1 are both connected with the CAN bus 4. The application of the CAN bus 4 CAN reduce the wiring harness.
Preferably, the anti-theft system based on the electronic gear shifter further comprises a gearbox control unit 5, the electronic gear shifter 2 is connected with the gearbox control unit 5 through a CAN bus 4, and the gearbox control unit 5 is connected with a P-gear parking mechanism 6. The gearbox control unit 5 receives a P-gear parking locking signal sent by the electronic gear shifter 2 or the vehicle-mounted controller 1 through the CAN bus 4 and outputs the P-gear parking locking signal to the P-gear parking mechanism 6, and the P-gear parking mechanism 6 executes gear locking or locking.
Preferably, the P-range parking mechanism 6 is integrated into the electronic gear shifter 2.
Preferably, the onboard controller 1 is a keyless entry and start system or a body controller.
The anti-theft method based on the electronic gear shifter and the system thereof have the working principle that: each vehicle is correspondingly provided with an identity key 3 capable of sensing the vehicle-mounted controller 1, when a user wants to drive the vehicle, if the user carries the identity key 3, the vehicle-mounted controller 1 senses and receives an identity authentication signal transmitted by the identity key 3, and when the vehicle-mounted controller 1 senses the identity authentication signal, the vehicle-mounted controller outputs a password authentication request to the electronic gear shifter 2 according to the identity key 3 of the user; when the vehicle-mounted controller 1 does not sense an identity authentication signal, a password authentication request is not output, preferably, the vehicle-mounted controller 1 is further connected with an ignition switch of the vehicle, when the vehicle-mounted controller 1 receives a signal that the ignition switch is in an ON gear, the vehicle-mounted controller 1 is electrified to establish communication connection with the electronic gear shifter 2, when the vehicle-mounted controller 1 receives an identity authentication signal that the ignition switch is in the ON gear or the START gear, the vehicle-mounted controller determines that a person driving the vehicle is not a vehicle owner of the vehicle at the moment, does not output a P gear unlocking request signal, the P gear parking mechanism 6 still keeps P gear locking, preferably, a timer can be set, the vehicle-mounted controller 1 counts time when the ignition switch is in the ON gear or the START gear, and determines that the person driving the vehicle is not the vehicle owner when the counted time exceeds a preset value and the identity authentication signal of the identity key 3 is not sensed at the moment, the P gear unlocking request signal is not output, the P gear parking mechanism 6 still keeps P gear locking, and the accuracy of judging whether a person driving the vehicle is the owner of the vehicle is improved by the one-step judgment.
When the electronic gear shifter 2 receives a password authentication request, the electronic gear shifter sends a password authentication signal I with a random code and a password I to the vehicle-mounted controller 1, the vehicle-mounted controller 1 processes the password authentication signal I, the password I and a password II in the vehicle-mounted controller 1 are subjected to password comparison and verification, when the password verification is unsuccessful, the P-gear parking mechanism 6 still keeps P-gear locking, and the electronic gear shifter 2 cannot normally switch gears and sends an alarm signal to a user terminal or a vehicle-mounted alarm for sound alarm; when the password verification is successful, the password II is encrypted according to the internal secret key and calculated to obtain the password III, and then the password authentication signal II of the password III is fed back to the electronic gear shifter, the electronic gear shifter 2 receives the password authentication signal II, simultaneously, the electronic gear shifter 2 also performs encryption calculation on the password I according to the internal secret key to obtain the calculated password IV, the received password III and the calculated password IV are compared and verified, when the password comparison and verification are successful, the electronic gear shifter 2 outputs a P-gear unlocking request signal to the CAN bus 4, the gearbox control unit 5 acquires a P-gear unlocking request signal from the CAN bus 4 and outputs an execution control signal to the P-gear parking mechanism 6, the P-gear parking mechanism 6 executes gear unlocking, when the electronic gear shifter has gear shifting intention, the electronic gear shifter normally sends R/N/D gear shifting and gear shifting request to the gearbox controller, and sends an authentication success signal to the vehicle-mounted controller 1; after the vehicle is normally driven, preferably, the vehicle-mounted controller 1 is further connected with a door lock sensor and is used for receiving a door lock signal transmitted by the door lock sensor, outputting a P-gear parking lock signal to the CAN bus 4 when the door lock signal is a door open signal, acquiring the P-gear parking lock signal from the CAN bus 4 by the gearbox control unit 5 and outputting an execution control signal to the P-gear parking mechanism 6, executing gear locking by the P-gear parking mechanism 6, and then returning to the first step for circulation; otherwise, when the password comparison and verification are unsuccessful, the P-gear parking mechanism 6 still keeps gear locking, the electronic gear shifter gear shifting handball is pushed, and the R/N/D gear switching still cannot be normally carried out, namely the P-gear parking mechanism 6 is still in a gear locking state.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. An anti-theft method based on an electronic gear shifter is characterized by comprising the following steps:
step one, a vehicle-mounted controller (1) sends out a password authentication request according to an identity key (3) of a user;
step two, the electronic gear shifter (2) generates a random code when receiving a password authentication request, and then combines the random code with the internal password I to form a password authentication signal and sends the password authentication signal to the vehicle-mounted controller (1), and the vehicle-mounted controller (1) processes the password authentication signal I and feeds back a password authentication signal II to the electronic gear shifter (2);
thirdly, the electronic gear shifter (2) performs password comparison and verification on the fed-back password authentication signal II, when a verification result meets an unlocking condition, a P-gear unlocking request signal is sent, and the P-gear parking mechanism (6) executes gear unlocking according to the received P-gear unlocking request signal to realize normal gear switching; otherwise, a P-gear unlocking request signal cannot be sent, and the P-gear parking mechanism (6) locks gear switching.
2. The electronic gear shifter-based anti-theft method according to claim 1, characterized in that in the first step, the vehicle-mounted controller (1) senses the identity key (3) of the user in real time and simultaneously monitors the vehicle ignition signal, when the vehicle ignition starting signal is monitored but the identity key (3) signal of the user is not sensed, a password authentication request is not output, and the P-gear parking mechanism (6) is kept locked; when an identity key (3) signal of a user is sensed, a password authentication request is output to the electronic gear shifter (2).
3. The electronic gear shifter-based anti-theft method according to claim 2, characterized in that in the first step, the vehicle-mounted controller (1) starts timing when a vehicle ignition starting signal is monitored, and sends out an alarm signal when the signal of the identity key (3) of the user is not sensed when the timing time reaches a preset value.
4. The electronic shifter-based antitheft method according to claim 1, 2 or 3, characterized in that in the step two, the operation of the vehicle-mounted controller (1) to process the password authentication signal one comprises:
the vehicle-mounted controller (1) generates a random code encryption code II;
the vehicle-mounted controller (1) processes a password authentication signal I with a random code encryption code I sent by the electronic gear shifter (2), the password comparison and verification are carried out on the password I and a password II, and when the verification is successful, the vehicle-mounted controller (1) calculates an encryption code on the password II by combining an internal secret key to obtain a password authentication signal II of a password III and feeds the password authentication signal II back to the electronic gear shifter (2); and when the verification is unsuccessful, the P-gear parking mechanism (6) keeps locking.
5. The anti-theft method based on the electronic gear shifter is characterized in that in the third step, the electronic gear shifter (2) calculates and encrypts the password I to obtain a password IV while receiving a password authentication signal II fed back by the vehicle-mounted controller (1) in combination with an internal secret key, compares and verifies the password IV with the password III fed back by the vehicle-mounted controller (1), and sends a P-gear unlocking request signal when the verification is successful, and the P-gear parking mechanism (6) performs gear unlocking according to the P-gear unlocking request signal to realize normal gear switching; conversely, the P-gear parking mechanism (6) is kept locked.
6. The electronic gear shifter-based anti-theft method according to claim 5, characterized in that in the third step, the electronic gear shifter (2) outputs an alarm signal when the password comparison is not successful.
7. The electronic gear shifter-based anti-theft method according to claim 1, characterized in that in the third step, after the P-gear parking mechanism (6) performs gear unlocking, the vehicle-mounted controller (1) monitors a door signal at the driving side, when a door opening signal is monitored, a P-gear parking locking signal is output to the electronic gear shifter (2), the electronic gear shifter (2) outputs a signal to enable the P-gear parking mechanism (6) to perform gear locking, and the steps are returned to the first step for circulation.
8. An anti-theft system based on an electronic gear shifter comprises a P-gear parking mechanism (6) used for locking the movement of a gear shifting lever, characterized in that the anti-theft system based on the electronic gear shifter also comprises an identity key (3) used for generating an identity authentication signal, an on-board controller (1) used for generating a password authentication request according to the identity key (3), and the electronic gear shifter (2) used for generating a random code according to the password authentication request and generating a password authentication signal I by combining an internal password, the vehicle-mounted controller (1) is in wireless induction connection with the identity key (3), the vehicle-mounted controller (1) is in communication connection with the electronic gear shifter (2), the electronic gear shifter (2) is connected with the P-gear parking mechanism (6), the vehicle-mounted controller (1) is used for processing a password authentication signal I transmitted by the electronic gear shifter (2) and feeding back a password authentication signal II to the electronic gear shifter (2); the electronic gear shifter (2) is used for carrying out password comparison and verification on a password authentication signal II fed back by the vehicle-mounted controller (1) and outputting a P-gear unlocking request signal when the verification is successful; and the P-gear parking mechanism (6) is used for executing gear unlocking according to the P-gear unlocking request signal.
9. The electronic shift based antitheft system according to claim 8, further comprising a CAN bus (4), wherein the electronic shift (2) and the onboard controller (1) are both connected to the CAN bus (4).
10. The electronic shift based theft protection system according to claim 9, characterized in that it further comprises a gearbox control unit (5), said electronic shift (2) being connected to the gearbox control unit (5) through a CAN bus (4), said gearbox control unit (5) being connected to a P gear parking mechanism (6).
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