CN118432034B - Multi-environment-based energy collection and power supply device and vehicle monitoring system - Google Patents
Multi-environment-based energy collection and power supply device and vehicle monitoring system Download PDFInfo
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- CN118432034B CN118432034B CN202410896192.2A CN202410896192A CN118432034B CN 118432034 B CN118432034 B CN 118432034B CN 202410896192 A CN202410896192 A CN 202410896192A CN 118432034 B CN118432034 B CN 118432034B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 claims abstract description 91
- 238000004146 energy storage Methods 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims description 41
- 238000003306 harvesting Methods 0.000 claims description 18
- 230000001133 acceleration Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
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- 230000007613 environmental effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/084—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides an energy collection power supply unit and vehicle monitoring system based on many environment, wherein energy collection power supply unit based on many environment is provided with: the vehicle operation monitoring unit is used for collecting whether the vehicle is in an operation state or not to obtain operation data; a multi-environment energy collection unit that collects different energy in the environment, supplies power to the external vehicle detection unit, and charges the energy storage unit; the energy storage unit stores the energy collected by the multi-environment energy collection unit and supplies power to the vehicle operation monitoring unit and the external vehicle detection unit; the priority judging unit is used for selecting the energy storage unit or the multi-environment energy collecting unit to supply power to the vehicle operation monitoring unit; and when the vehicle is in a non-running state currently, controlling the energy storage unit to store the energy of the multi-environment energy collection unit. The invention can collect energy in different environments through one device, does not need wiring and battery replacement or recharging, and is convenient to use.
Description
Technical Field
The invention relates to the technical field of energy collection, in particular to an energy collection power supply device and a vehicle monitoring system based on multiple environments.
Background
Railway transportation systems are critical to modern society, and Wireless Sensor Network (WSN) based condition monitoring systems are a good choice for monitoring railway line infrastructure in real time and detecting faults before they cause any loss. However, on each carriage on the rail transit freight train, due to the fact that a power supply system is not provided, effective real-time monitoring cannot be carried out on the carriage, such as speed, vibration detection, stability assessment, shaft end temperature monitoring and the like of a railway wagon. The monitoring has important effects on the running stability and running quality of the vehicle, and the safety of freight train transportation is directly affected. The vehicle monitoring unit needs power supply to operate, however, the service life of the traditional battery is limited, and when the sensor monitoring nodes are distributed in a large amount, the workload of replacing or recharging the battery is very large when the electric quantity of the battery is exhausted. If the power is directly supplied to the vehicle monitoring unit, wiring is needed, then the sensor monitoring nodes are numerous, and wiring is very difficult. At present, although a power supply device through a transducer is provided, the power supply device uses a single transducer, and the power supply device has lower power under certain conditions, for example, a photovoltaic cell has lower energy density when the intensity of light is insufficient, and still cannot enable a vehicle monitoring unit to work normally, for example, an electromagnetic vibration energy collector of CN 106160396A of chinese patent publication no.
Therefore, in order to solve the deficiencies of the prior art, it is necessary to provide a multi-environment-based energy collection and power supply device and a vehicle monitoring system.
Disclosure of Invention
One of the objects of the present invention is to avoid the disadvantages of the prior art and to provide a multi-environment based energy harvesting and power supply device. The multi-environment-based energy collection and power supply device can collect energy in different environments through one device, does not need wiring and battery replacement or recharging, and is convenient to use.
The above object of the present invention is achieved by the following technical measures:
provided is a multi-environment-based energy harvesting and power supply device provided with:
a vehicle operation monitoring unit for collecting whether the vehicle is in an operation state to obtain operation data;
a multi-environment energy collection unit that collects different energies in the environment, supplies power to the external vehicle detection unit, and charges the energy storage unit;
the energy storage unit is used for storing the energy collected by the multi-environment energy collection unit and supplying power to the vehicle operation monitoring unit and the external vehicle detection unit;
The priority judging unit is used for collecting current operation data, and when the vehicle is in the current operation state, the energy storage unit or the multi-environment energy collecting unit is selected to supply power to the external vehicle detecting unit; and when the vehicle is in a non-running state currently, controlling the energy storage unit to store the energy of the multi-environment energy collection unit.
Preferably, the multi-environmental energy harvesting unit is provided with a plurality of energy harvesters, at least two of which harvesting different energy.
Preferably, the judgment control method of the priority judgment unit includes the steps of:
S1, judging whether the vehicle is in an operation state currently according to current operation data, entering S2 when the vehicle is in the operation state, and entering S3 when the vehicle is in a non-operation state;
s2, judging whether at least one power value of the energy collector in the multi-environment energy collection unit is larger than or equal to a power threshold value, and if so, enabling the multi-environment energy collection unit to supply power to an external vehicle detection unit according to a multi-environment power supply method; otherwise, the energy storage unit supplies power to an external vehicle detection unit according to an energy storage power supply method;
S3, judging whether at least one power value of the energy collector in the multi-environment energy collecting unit is larger than or equal to a power threshold value, and charging the energy storage unit according to a charging method when the power value is larger than or equal to the power threshold value; otherwise, power is not supplied.
Preferably, the above-mentioned multi-environmental energy harvesting unit is provided with a plurality of energy collectors, which are solar collectors, wind collectors and vibration collectors.
Preferably, the power threshold is set to a first threshold corresponding to the vibration energy collector, a second threshold corresponding to the wind energy collector, and a third threshold corresponding to the solar energy collector.
And in the step S2, whether the power value of the vibration energy collector is larger than or equal to the first threshold value, whether the power value of the wind energy collector is larger than or equal to the second threshold value, and whether the power value of the solar energy collector is larger than or equal to the third threshold value are respectively judged, and when at least one power value of the energy collector is larger than or equal to the corresponding power threshold value, the multi-environment energy collection unit supplies power to the external vehicle detection unit according to a multi-environment power supply method.
Preferably, the above-mentioned multi-environment power supply method includes the steps of:
a1, defining energy collectors which are larger than or equal to a corresponding power threshold as energy collectors to be powered, judging the number of the energy collectors to be powered, entering A2 when a plurality of energy collectors to be powered exist, and entering A3 when only one energy collector to be powered exists;
A2, judging the power value of each to-be-supplied energy collector, defining the to-be-supplied energy collector corresponding to the maximum power value as a maximum electric energy collector, and supplying power to an external vehicle detection unit by using the maximum electric energy collector; when at least two maximum electric energy collectors with the same power value exist, any one of the maximum electric energy collectors is used for supplying power to an external vehicle detection unit and is defined as a determined energy collector, the determined energy collector supplies power to the external vehicle detection unit, and other energy collectors to be supplied except the determined energy collector charge the energy storage unit according to the charging method;
When the power of the determined energy collector is larger than the consumed power of the external vehicle detection unit, dividing the energy of the determined energy collector into two parts, wherein one part of energy which is equal to the consumed power of the external vehicle detection unit is used for supplying power to the external vehicle detection unit, and the other part of energy charges the energy storage unit according to the charging method; when the power of the energy collector is less than or equal to the consumed power of the external vehicle detection unit, determining that the energy of the energy collector is all used for supplying power to the external vehicle detection unit;
A3, when the power of the energy collector to be supplied is larger than the consumed power of the external vehicle detection unit, dividing the energy of the energy collector to be supplied into two parts, wherein one part of the energy which is equal to the consumed power of the external vehicle detection unit is used for supplying power to the external vehicle detection unit, and the other part of the energy charges the energy storage unit according to the charging method; when the power of the power supply energy collector is less than or equal to the consumed power of the external vehicle detection unit, the energy of the power supply energy collector is used for supplying power to the external vehicle detection unit.
Preferably, the energy storage unit is provided with a plurality of batteries; the energy storage and power supply method comprises the following steps:
b1, detecting the electric quantity values of all batteries, and entering B2;
b2, comparing the electric quantity values of all batteries with an electric quantity threshold value, and entering B3 when at least one electric quantity value of the batteries is larger than or equal to the electric quantity threshold value; if not, B4 is entered;
b3, selecting a battery with the highest electric quantity value of the batteries to supply power to the external vehicle detection unit, and randomly selecting one of the batteries with the highest electric quantity value to supply power to the external vehicle detection unit when the batteries with the highest electric quantity value are multiple;
b4, no power is supplied to the external vehicle detection unit.
Preferably, the above charging method includes the steps of:
C1, judging whether the power value of the vibration energy collector is larger than or equal to the first threshold value, judging whether the power value of the wind energy collector is larger than or equal to the second threshold value, judging whether the power value of the solar energy collector is larger than or equal to the third threshold value, charging a battery by using at least one energy collector when the power value of the energy collector is larger than or equal to the corresponding power threshold value, and entering C2, and entering C7 when the power value of the energy collector is not larger than or equal to the corresponding power threshold value;
c2, judging that the electric quantity values of all the batteries enter C3;
C3, comparing the electric quantity values of all the batteries with the electric quantity threshold value, and entering C4 when at least one electric quantity value of the batteries is smaller than the electric quantity threshold value; enter C5 when all battery charge values are greater than the charge threshold and there is at least one battery with a charge value less than 100%; when the electric quantity values of all the batteries are 100%, C6 is entered;
C4, charging the battery with the electric quantity value smaller than the electric quantity threshold value, and sequentially charging the battery according to the charging sequence from low to high of the electric quantity value of the battery;
C5, charging the batteries with the electric quantity value larger than or equal to the electric quantity threshold value and smaller than 100%, and sequentially charging the batteries in a charging sequence from low to high;
C6, consuming the electric energy collected by the energy collector through the bypass resistor of the priority judging unit, and then entering C7;
And C7, not charging.
And in the step A2, other energy collectors to be supplied except the determined energy collector charge the energy storage unit according to C2 to C7 in the charging method.
In A3, the other part of energy charges the energy storage unit according to C2 to C7 in the charging method.
The multi-environment-based energy collecting and supplying device is further provided with a wireless receiving and transmitting unit, wherein the wireless receiving and transmitting unit receives monitoring data and threshold adjusting signals of an external vehicle detecting unit and transmits the monitoring data to the outside.
Preferably, the energy storage unit continuously supplies power to the vehicle operation monitoring unit, or the energy storage unit intermittently supplies power to the vehicle operation monitoring unit.
Preferably, the vehicle operation monitoring unit is a wireless acceleration sensor.
Preferably, the first threshold is 50mW to 100mW.
Preferably, the second threshold is 0.5W to 1.5W.
Preferably, the third threshold is 0.5W to 1.5W.
Preferably, the electric quantity threshold is 20% -50%.
It is a further object of the present invention to provide a vehicle monitoring system that avoids the deficiencies of the prior art. The vehicle monitoring system can collect energy in different environments and supply power to the vehicle operation monitoring unit through one quantity collecting power supply device, does not need wiring and battery replacement or recharging, and is convenient to use.
The above object of the present invention is achieved by the following technical measures:
Provided is a vehicle monitoring system provided with the energy collecting and power supplying device and the vehicle monitoring system
The external vehicle detection unit is used for detecting monitoring data of a vehicle and sending the monitoring data to the energy collection power supply device, and the energy collection power supply device is used for sending the monitoring data to a terminal.
Preferably, the external vehicle detection unit is at least one of a vibration sensor for detecting a vehicle body, a vibration sensor for detecting a bogie, or a temperature sensor for detecting a bearing temperature.
The invention relates to a multi-environment-based energy collection and power supply device and a vehicle monitoring system, wherein the multi-environment-based energy collection and power supply device is provided with: the vehicle operation monitoring unit is used for collecting whether the vehicle is in an operation state or not to obtain operation data; a multi-environment energy collection unit that collects different energy in the environment, supplies power to the external vehicle detection unit, and charges the energy storage unit; the energy storage unit stores the energy collected by the multi-environment energy collection unit and supplies power to the vehicle operation monitoring unit and the external vehicle detection unit; the priority judging unit is used for selecting the energy storage unit or the multi-environment energy collecting unit to supply power to the vehicle operation monitoring unit; and when the vehicle is in a non-running state currently, controlling the energy storage unit to store the energy of the multi-environment energy collection unit. The invention can collect energy in different environments through one device, does not need wiring and battery replacement or recharging, and is convenient to use. The multi-environment energy collection unit is controlled to directly supply power according to the current state of the vehicle in the running state or the energy storage unit is controlled to supply power according to the priority judging unit, and the multi-environment energy collection unit is controlled to charge the energy storage unit in the non-running state.
Drawings
The invention is further illustrated by the accompanying drawings, which are not to be construed as limiting the invention in any way.
Fig. 1 is a schematic diagram of connection of the multi-environment-based energy harvesting power supply of embodiment 1.
Fig. 2 is a diagram of a judgment control method of the priority judgment unit.
Fig. 3 is a schematic diagram of the connection of an energy storage unit with two batteries.
Fig. 4 is a schematic connection diagram of an energy storage unit with three batteries.
Fig. 5 is a schematic diagram of the connection of an energy storage unit with four batteries.
Fig. 6 is a circuit diagram at the priority determination unit.
Fig. 7 is a schematic diagram of connection of the multi-environment based energy harvesting power apparatus of embodiment 2.
In fig. 1 to 7, there are included:
A vehicle operation monitoring unit 100,
Multi-environment energy harvesting unit 200, solar collector 210, wind energy collector 220, vibration energy collector 230,
An energy storage unit 300, a battery 310, a battery detection chip 320, a power conversion chip 330, a processing chip 340, a power management chip 350, a shunt resistor 360,
Priority determining section 400, wireless transmitting/receiving section 500, and external vehicle detecting section 600.
Detailed Description
The technical scheme of the invention is further described with reference to the following examples.
Example 1
The energy collection and power supply device based on multiple environments is provided with:
a vehicle operation monitoring unit 100 that collects whether the vehicle is in an operating state, and obtains operation data;
multiple environment energy harvesting unit 200-harvesting different energy in the environment, powering external vehicle detection unit 600, and charging energy storage unit 300;
An energy storage unit 300 that stores the energy collected by the multi-environment energy collection unit 200 and supplies power to the vehicle operation monitoring unit 100 and the external vehicle detection unit 600;
The priority judging unit 400, which collects current operation data, and when the vehicle is currently in an operation state, alternatively selects the energy storage unit 300 or the multi-environment energy collecting unit 200 to supply power to the external vehicle detecting unit 600; the energy storage unit 300 is controlled to store the energy of the multi-environment energy collection unit 200 when the vehicle is currently in a non-running state.
The multi-environment energy harvesting unit 200 is provided with a plurality of energy harvesters, at least two of which harvesting different energy.
The judgment control method of the priority judgment unit 400 includes the steps of, as shown in fig. 2:
S1, judging whether the vehicle is in an operation state currently according to current operation data, entering S2 when the vehicle is in the operation state, and entering S3 when the vehicle is in a non-operation state;
S2, judging whether at least one power value of the energy collector in the multi-environment energy collection unit 200 is larger than or equal to a power threshold value, and enabling the multi-environment energy collection unit 200 to supply power to the external vehicle detection unit 600 according to a multi-environment power supply method when the power value is larger than or equal to the power threshold value; otherwise, the energy storage unit 300 is caused to supply power to the external vehicle detection unit 600 according to the energy storage power supply method;
S3, judging whether at least one power value of the energy collector in the multi-environment energy collection unit 200 is larger than or equal to a power threshold value, and charging the energy storage unit 300 according to a charging method when the power value is larger than or equal to the power threshold value; otherwise, the battery is not charged.
The present invention supplies power to the external vehicle detecting unit 600 when the vehicle is running and charges the energy storing unit 300 when the vehicle is not running through the judgment control of the priority judging unit 400, so that it is possible to maximally utilize the environmental energy. The invention collects energy through the multi-environment energy collection unit 200, supplies power to the external vehicle detection unit 600, avoids the installation wiring work, does not need to make large changes on a truck vehicle system, has low modification and installation cost, and does not need to frequently replace the battery 310 and manually charge.
It should be further noted that, according to the present invention, the priority determining unit 400 determines the current running state of the vehicle, when the energy collectors greater than the power threshold exist in the multi-environment energy collecting unit 200, the corresponding energy collectors can be used to directly supply power to the external vehicle detecting unit 600, without passing through the energy storing unit 300, and when all the energy collectors are less than the power threshold, the energy storing unit 300 is used to supply power to the external vehicle detecting unit 600, so that the service life of the energy storing unit 300 can be improved. When the vehicle is currently in a non-running state, the power threshold of the multi-environment energy harvesting unit 200 is again determined, and when there is an energy harvester greater than the power threshold, the battery 310 is charged using the energy harvester.
The energy collectors are solar collector 210, wind energy collector 220, and vibration energy collector 230, with the power threshold set with a first threshold corresponding to vibration energy collector 230, a second threshold corresponding to wind energy collector 220, and a third threshold corresponding to solar collector 210. Wherein the first threshold is 50 mW-100 mW, and the second threshold is 0.5W-1.5W; the third threshold is 0.5W to 1.5W. In this embodiment, the first threshold value is 70mW, the second threshold value is 1.0W, and the third threshold value is 1.0W.
It should be noted that, in combination with the operation of the rail wagon, the energy collector is set as the solar energy collector 210, the wind energy collector 220 and the vibration energy collector 230, which accords with the daily open insolation and lower vibration frequency operation environment of the rail wagon, and the energy which is wasted originally can be effectively utilized by collecting the environmental energy, thereby improving the energy utilization efficiency and promoting the sustainable development. While the interior of wind energy harvester 220 and vibration energy harvester 230 is augmented with a rectifier bridge.
In S2, it is determined whether the power value of the vibration energy collector 230 is equal to or greater than a first threshold, whether the power value of the wind energy collector 220 is equal to or greater than a second threshold, and whether the power value of the solar energy collector 210 is equal to or greater than a third threshold, respectively, and when at least one power value of the energy collector is equal to or greater than a corresponding power threshold, the multi-environment energy collection unit 200 is caused to supply power to the external vehicle detection unit 600 according to the multi-environment power supply method.
The multi-environment power supply method comprises the following steps:
a1, defining energy collectors which are larger than or equal to a corresponding power threshold as energy collectors to be powered, judging the number of the energy collectors to be powered, entering A2 when a plurality of energy collectors to be powered exist, and entering A3 when only one energy collector to be powered exists;
a2, judging the power value of each to-be-supplied energy collector, defining the to-be-supplied energy collector corresponding to the maximum power value as the maximum energy collector, and supplying power to the external vehicle detection unit 600 by using the maximum energy collector; when there are at least two maximum electric energy collectors of the same power value, powering the external vehicle detection unit 600 using any one of the maximum electric energy collectors and defining the maximum electric energy collector as a determination energy collector, powering the external vehicle detection unit 600 by the determination energy collector, and charging the energy storage unit by other energy collectors to be powered other than the determination energy collector according to a charging method;
When it is determined that the power of the energy collector is greater than the power consumption of the external vehicle detection unit 600, dividing the energy of the determined energy collector into two parts, wherein one part of the energy equal to the power consumption of the external vehicle detection unit 600 is used for supplying power to the external vehicle detection unit 600, and the other part of the energy charges the energy storage unit according to a charging method; when it is determined that the power of the energy collector is equal to or less than the consumed power of the external vehicle detection unit 600, it is determined that the energy of the energy collector is all used for the external vehicle detection unit 600 to supply power;
A3, when the power of the energy collector to be supplied is larger than the consumed power of the external vehicle detection unit 600, dividing the energy of the energy collector to be supplied into two parts, wherein one part of the energy is equal to the consumed power of the external vehicle detection unit 600 and is used for supplying power to the external vehicle detection unit 600, and the other part of the energy charges the energy storage unit according to a charging method; when the power of the supplied energy collector is equal to or less than the consumed power of the external vehicle detection unit 600, the energy of the supplied energy collector is used for the external vehicle detection unit 600 to supply power.
The multi-environment power supply method of the present invention preferentially ensures that the external vehicle detection unit 600 is powered, and the surplus energy charges the energy storage unit again, thereby ensuring that energy is not wasted.
The energy storage unit 300 of the present invention is provided with a plurality of batteries 310, and the energy storage and power supply method includes the steps of:
b1, detecting the electric quantity values of all the batteries 310, and entering B2;
B2, comparing the electric quantity values of all the batteries 310 with an electric quantity threshold value, and entering B3 when at least one electric quantity value of the batteries 310 is greater than or equal to the electric quantity threshold value; if not, B4 is entered;
B3, selecting the battery 310 with the highest electric quantity value of the batteries 310 to supply power to the external vehicle detection unit 600, and randomly selecting one of the batteries 310 to supply power to the external vehicle detection unit 600 when the batteries 310 with the highest electric quantity value are provided with a plurality of batteries;
b4, no power is supplied to the external vehicle detection unit 600.
It should be noted that, the purpose of the energy storage unit of the present invention is to provide a plurality of batteries 310, so that different batteries 310 can be used alternately, and the service life of the batteries 310 can be improved. The electric quantity threshold value of the invention is 20% -50%. The power threshold in this embodiment is specifically 30%. The energy storage unit 300 of the present invention is that each battery 310 is individually matched with a battery 310 detection chip, the battery 310 detection chip detects the electric quantity value of the corresponding battery 310, the battery 310 is connected with the battery detection chip 320, then all the battery detection chips 320 are connected with the power conversion chip 330, the power conversion chip 330 is connected with the processing chip 340, the processing chip 340 charges and supplies power according to the electric quantity value of the battery 310, the power management chip 350 is connected with the processing chip 340 to supply power for the processing chip 340, the bypass resistor 360 of the energy storage unit 300 is connected in parallel with the external vehicle detection unit 600, and the overflow energy collected by the energy collector is consumed through the bypass resistor 360. The number of the batteries 310 of the energy storage unit 300 may be 2,3,4, 10, etc., according to practical situations, wherein 2 batteries 310 are shown in fig. 3,3 batteries 310 are shown in fig. 4,4 batteries 310 are shown in fig. 5, and the number of the batteries 310 of the energy storage unit 300 in this embodiment is 3, and when the number of the batteries 310 increases, only a battery 310 detection chip is configured correspondingly, which is not described herein again.
The charging method comprises the following steps:
C1, judging whether the power value of the vibration energy collector 230 is greater than or equal to a first threshold value, judging whether the power value of the wind energy collector 220 is greater than or equal to a second threshold value, judging whether the power value of the solar energy collector 210 is greater than or equal to a third threshold value, charging the battery 310 by using at least one energy collector when the power value of the energy collector is greater than or equal to the corresponding power threshold value and entering C2, and entering C7 when the power value of the energy collector is not greater than or equal to the corresponding power threshold value;
c2, judging that the electric quantity values of all the batteries 310 enter C3;
C3, comparing the electric quantity values of all the batteries 310 with an electric quantity threshold value, and entering C4 when at least one electric quantity value of the batteries 310 is smaller than the electric quantity threshold value; enter C5 when all battery 310 charge values are greater than the charge threshold and there is at least one battery 310 with a charge value of less than 100% of the battery 310; enter C6 when all battery 310 charge values are 100%;
c4, charging the battery 310 with the electric quantity value smaller than the electric quantity threshold value, and sequentially charging the battery 310 according to the charging sequence from low to high;
C5, charging the batteries 310 with the electric quantity value larger than or equal to the electric quantity threshold value and smaller than 100%, and charging the batteries 310 in sequence from low to high;
C6, consuming the electric energy collected by the energy collector through the bypass resistor 360 of the priority judging unit 400, and then entering C7;
And C7, not charging.
In A2, the energy storage units are charged by other energy collectors to be supplied, except the determined energy collector, according to C2 to C7 in the charging method.
In A3, another part of the energy charges the energy storage unit according to C2 to C7 in the charging method.
The energy storage unit 300 continuously supplies power to the vehicle operation monitoring unit 100, or the energy storage unit 300 intermittently supplies power to the vehicle operation monitoring unit 100.
The energy storage unit 300 of the energy collection and supply device of the present invention can continuously supply power to the vehicle operation monitoring unit 100, and if the vehicle operation monitoring unit 100 continuously collects data of whether the vehicle is operated, the priority determining unit 400 controls the operation of the energy storage unit 300 and the multi-environment energy collection unit 200 in real time; when the energy storage unit 300 intermittently supplies power to the vehicle operation monitoring unit 100, then the vehicle operation monitoring unit 100 intermittently collects whether the vehicle is operated or not, and then the priority determining unit 400 controls the operations of the energy storage unit 300 and the multi-environment energy collecting unit 200 according to the operation data within a range, for example, when the time interval for which the energy storage unit 300 supplies power to the vehicle operation monitoring unit 100 is 1min, and controls the operations of the energy storage unit 300 and the multi-environment energy collecting unit 200 according to the current operation data within the range of 1 min; the operation of the energy storage unit 300 and the multi-environment energy harvesting unit 200 is controlled in accordance with the next operation data again at the next time interval.
The priority determination unit 400 of the present embodiment specifically uses an LTC3331 chip, as shown in fig. 6, in which a buck switching regulator, a buck-boost switching regulator, and a converter are built in the LTC3331 chip. The LTC3331 chip controls the corresponding converter to make the energy storage unit 300 or the multi-environment energy collection unit 200 supply power to the external vehicle detection unit 600 according to the operation data. And when the energy of the multi-environment energy collection unit 200 exceeds the power threshold, for example, the buck-boost switching regulator is in an active state and the buck-boost switching regulator is in an off state, thereby powering the external vehicle detection unit 600 or charging the energy storage unit. The external vehicle detection unit 600 can extend the life of the battery 310 without relying entirely on the energy storage unit to supply power.
The multi-environment-based energy collection and power supply device can collect energy in different environments through one device, does not need wiring and replacement of the battery 310 or recharging, and is convenient to use. And the invention can directly supply power to the multi-environment energy collection unit 200 controlled in the running state according to the current state of the vehicle or supply power to the energy storage unit 300 through the priority judging unit 400, and control the multi-environment energy collection unit 200 to charge the energy storage unit 300 in the non-running state.
Example 2
As shown in fig. 7, the multi-environment-based energy harvesting and power supply apparatus is further provided with a wireless transceiver unit 500, and the wireless transceiver unit 500 receives the monitoring data and the threshold adjustment signal of the external vehicle detection unit 600 and transmits the monitoring data to the outside.
The energy storage unit 300 continuously supplies power to the vehicle operation monitoring unit 100, or the energy storage unit 300 intermittently supplies power to the vehicle operation monitoring unit 100.
Example 3
A vehicle monitoring system provided with the energy collection power supply device and the external vehicle detection unit 600 as in embodiment 2, the energy collection power supply device supplying power to the external vehicle detection unit 600, the external vehicle detection unit 600 detecting monitoring data of the vehicle and transmitting the monitoring data to the energy collection power supply device, the energy collection power supply device transmitting the monitoring data to the terminal.
The external vehicle detection unit 600 is at least one of a vibration sensor for detecting a vehicle body, a vibration sensor for detecting a bogie, or a temperature sensor for detecting a bearing temperature.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. An energy collection power supply unit based on many environment, characterized by, be provided with:
a vehicle operation monitoring unit for collecting whether the vehicle is in an operation state to obtain operation data;
a multi-environment energy collection unit that collects different energies in the environment, supplies power to the external vehicle detection unit, and charges the energy storage unit;
the energy storage unit is used for storing the energy collected by the multi-environment energy collection unit and supplying power to the vehicle operation monitoring unit and the external vehicle detection unit;
The priority judging unit is used for collecting current operation data, and when the vehicle is in the current operation state, the energy storage unit or the multi-environment energy collecting unit is selected to supply power to the external vehicle detecting unit; when the vehicle is in a non-running state currently, controlling the energy storage unit to store the energy of the multi-environment energy collection unit;
The judging control method of the priority judging unit comprises the following steps:
S1, judging whether the vehicle is in an operation state currently according to current operation data, entering S2 when the vehicle is in the operation state, and entering S3 when the vehicle is in a non-operation state;
s2, judging whether at least one power value of the energy collector in the multi-environment energy collection unit is larger than or equal to a power threshold value, and if so, enabling the multi-environment energy collection unit to supply power to an external vehicle detection unit according to a multi-environment power supply method; otherwise, the energy storage unit supplies power to an external vehicle detection unit according to an energy storage power supply method;
S3, judging whether at least one power value of the energy collector in the multi-environment energy collecting unit is larger than or equal to a power threshold value, and charging the energy storage unit according to a charging method when the power value is larger than or equal to the power threshold value; otherwise, the battery is not charged;
The multi-environment energy collecting unit is provided with a plurality of energy collectors, and the energy collectors are a solar energy collector, a wind energy collector and a vibration energy collector;
The power threshold is provided with a first threshold corresponding to the vibration energy collector, a second threshold corresponding to the wind energy collector, and a third threshold corresponding to the solar energy collector;
In the step S2, whether the power value of the vibration energy collector is greater than or equal to the first threshold, whether the power value of the wind energy collector is greater than or equal to the second threshold, and whether the power value of the solar energy collector is greater than or equal to the third threshold are respectively judged, and when at least one power value of the energy collector is greater than or equal to the corresponding power threshold, the multi-environment energy collection unit supplies power to an external vehicle detection unit according to a multi-environment power supply method;
The multi-environment power supply method comprises the following steps:
a1, defining energy collectors which are larger than or equal to a corresponding power threshold as energy collectors to be powered, judging the number of the energy collectors to be powered, entering A2 when a plurality of energy collectors to be powered exist, and entering A3 when only one energy collector to be powered exists;
A2, judging the power value of each to-be-supplied energy collector, defining the to-be-supplied energy collector corresponding to the maximum power value as a maximum electric energy collector, and supplying power to an external vehicle detection unit by using the maximum electric energy collector; when at least two maximum electric energy collectors with the same power value exist, any one of the maximum electric energy collectors is used for supplying power to an external vehicle detection unit and is defined as a determined energy collector, the determined energy collector supplies power to the external vehicle detection unit, and other energy collectors to be supplied except the determined energy collector charge the energy storage unit according to the charging method;
When the power of the determined energy collector is larger than the consumed power of the external vehicle detection unit, dividing the energy of the determined energy collector into two parts, wherein one part of energy which is equal to the consumed power of the external vehicle detection unit is used for supplying power to the external vehicle detection unit, and the other part of energy charges the energy storage unit according to the charging method; when the power of the energy collector is less than or equal to the consumed power of the external vehicle detection unit, determining that the energy of the energy collector is all used for supplying power to the external vehicle detection unit;
A3, when the power of the energy collector to be supplied is larger than the consumed power of the external vehicle detection unit, dividing the energy of the energy collector to be supplied into two parts, wherein one part of the energy which is equal to the consumed power of the external vehicle detection unit is used for supplying power to the external vehicle detection unit, and the other part of the energy charges the energy storage unit according to the charging method; when the power of the power supply energy collector is smaller than or equal to the consumed power of the external vehicle detection unit, the energy of the power supply energy collector is used for supplying power to the external vehicle detection unit;
The energy storage unit is provided with a plurality of batteries;
The energy storage and power supply method comprises the following steps:
b1, detecting the electric quantity values of all batteries, and entering B2;
b2, comparing the electric quantity values of all batteries with an electric quantity threshold value, and entering B3 when at least one electric quantity value of the batteries is larger than or equal to the electric quantity threshold value; if not, B4 is entered;
b3, selecting a battery with the highest electric quantity value of the batteries to supply power to the external vehicle detection unit, and randomly selecting one of the batteries with the highest electric quantity value to supply power to the external vehicle detection unit when the batteries with the highest electric quantity value are multiple;
b4, no power is supplied to the external vehicle detection unit.
2. The multi-environment based energy harvesting power supply of claim 1, wherein the charging method comprises the steps of:
C1, judging whether the power value of the vibration energy collector is larger than or equal to the first threshold value, judging whether the power value of the wind energy collector is larger than or equal to the second threshold value, judging whether the power value of the solar energy collector is larger than or equal to the third threshold value, charging a battery by using at least one energy collector when the power value of the energy collector is larger than or equal to the corresponding power threshold value, and entering C2, and entering C7 when the power value of the energy collector is not larger than or equal to the corresponding power threshold value;
c2, judging that the electric quantity values of all the batteries enter C3;
C3, comparing the electric quantity values of all the batteries with the electric quantity threshold value, and entering C4 when at least one electric quantity value of the batteries is smaller than the electric quantity threshold value; enter C5 when all battery charge values are greater than the charge threshold and there is at least one battery with a charge value less than 100%; when the electric quantity values of all the batteries are 100%, C6 is entered;
C4, charging the battery with the electric quantity value smaller than the electric quantity threshold value, and sequentially charging the battery according to the charging sequence from low to high of the electric quantity value of the battery;
C5, charging the batteries with the electric quantity value larger than or equal to the electric quantity threshold value and smaller than 100%, and sequentially charging the batteries in a charging sequence from low to high;
C6, consuming the electric energy collected by the energy collector through the bypass resistor of the priority judging unit, and then entering C7;
C7, not charging;
In the step A2, other energy collectors to be supplied except the determined energy collector charge the energy storage unit according to C2 to C7 in the charging method;
In A3, another part of the energy charges the energy storage unit according to C2 to C7 in the charging method.
3. The multi-environment based energy harvesting power supply of claim 1, wherein: the wireless receiving and transmitting unit is also provided with a wireless receiving and transmitting unit, and the wireless receiving and transmitting unit is used for receiving monitoring data and a threshold adjusting signal of an external vehicle detecting unit and transmitting the monitoring data to the outside;
The energy storage unit continuously supplies power to the vehicle operation monitoring unit, or intermittently supplies power to the vehicle operation monitoring unit;
the vehicle operation monitoring unit is a wireless acceleration sensor.
4. The multi-environment based energy harvesting power supply of claim 2, wherein: the first threshold value is 50 mW-100 mW;
The second threshold is 0.5W-1.5W;
The third threshold is 0.5W-1.5W;
The electric quantity threshold value is 20% -50%.
5. A vehicle monitoring system, characterized by: an energy collection power supply device and an external vehicle detection unit according to any one of claims 1 to 4, the energy collection power supply device supplying power to the external vehicle detection unit, the external vehicle detection unit detecting monitoring data of a vehicle and transmitting the monitoring data to the energy collection power supply device, the energy collection power supply device transmitting the monitoring data to a terminal;
The external vehicle detection unit is at least one of a vibration sensor for detecting a vehicle body, a vibration sensor for detecting a bogie, or a temperature sensor for detecting a bearing temperature.
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