CN112572341B - Vehicle anti-theft method, device, equipment and storage medium - Google Patents
Vehicle anti-theft method, device, equipment and storage medium Download PDFInfo
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- CN112572341B CN112572341B CN202011401614.2A CN202011401614A CN112572341B CN 112572341 B CN112572341 B CN 112572341B CN 202011401614 A CN202011401614 A CN 202011401614A CN 112572341 B CN112572341 B CN 112572341B
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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
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Abstract
The invention provides an anti-theft method, an anti-theft device, anti-theft equipment and a storage medium for a vehicle, wherein the method comprises the following steps: after a control circuit in the vehicle is powered on, determining whether the vehicle is in a back electromotive force power-on state currently; in the case where the vehicle is currently in the back-emf powered state, the phase lines of the drive motor in the vehicle are controlled to be short-circuited. Therefore, the method enables the control circuit to be powered on according to the electromotive force generated when the wheels rotate caused by vehicle stealing behaviors, and enables the driving motor to brake by controlling the phase line short circuit of the driving motor in the vehicle when the vehicle is determined to be in a stolen state, so that the vehicle is prevented from being stolen under the conditions that the lock of the vehicle is damaged and the wheels rotate, the reliability of vehicle theft prevention is improved, and the safety of the vehicle is ensured.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to an anti-theft method, an anti-theft device, an anti-theft apparatus, and a storage medium for a vehicle.
Background
At present, vehicles become essential transportation means for people to go out, and along with the enhancement of awareness of safety of the vehicles, the anti-theft function of the vehicles draws more and more attention of people.
In the related art, devices such as mechanical locks, electronic locks or alarms are generally arranged for different types of vehicles to prevent theft. However, in practical applications, the anti-theft strength of the anti-theft method is low, and the risk of vehicle theft is still high. Therefore, there is a need for a more effective vehicle anti-theft method.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide an anti-theft method for a vehicle, which powers up a control circuit according to an electromotive force generated when a wheel rotates due to a vehicle theft behavior, and brakes a driving motor by controlling a phase line short circuit of the driving motor in the vehicle when it is determined that the vehicle is in a stolen state, thereby preventing the vehicle from moving, and also outputs an alarm signal to assist in anti-theft through an anti-theft alarm system, thereby preventing the vehicle from being stolen when a lock of the vehicle is damaged and the wheel has rotated, improving the reliability of anti-theft of the vehicle, and being beneficial to ensuring the safety of the vehicle.
A second object of the present invention is to provide an antitheft device for a vehicle.
A third object of the invention is to propose an electronic device.
A fourth object of the invention is to propose a computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides an anti-theft method for a vehicle, including:
after a control circuit in a vehicle is powered on, determining whether the vehicle is in a back electromotive force power-on state currently;
and under the condition that the vehicle is currently in a counter-potential electrifying state, controlling the phase line of a driving motor in the vehicle to be short-circuited.
The anti-theft method for the vehicle, provided by the embodiment of the invention, comprises the steps of firstly determining whether the vehicle is in a back electromotive force electrifying state or not after a control circuit of the vehicle is electrified, and controlling the phase line short circuit of a driving motor in the vehicle under the condition of determining that the vehicle is in an illegal electrifying state. Therefore, the method enables the control circuit to be powered on according to the electromotive force generated when the wheels rotate caused by vehicle stealing behaviors, and enables the driving motor to brake by controlling the phase line short circuit of the driving motor in the vehicle when the vehicle is determined to be in a stolen state, so that the vehicle is prevented from being stolen under the conditions that the lock of the vehicle is damaged and the wheels rotate, the anti-theft reliability of the vehicle is improved, and the safety of the vehicle is ensured.
According to one embodiment of the invention, before the controlling of the phase line short circuit of the driving motor in the vehicle, the method further comprises: and controlling an anti-theft alarm system in the vehicle to output an alarm signal.
According to one embodiment of the invention, before controlling the burglar alarm system in the vehicle to output an alarm signal, the method further comprises: and switching on a first switch component between a power supply end of an anti-theft alarm system in the vehicle and an output end of a back electromotive force inverter circuit in the vehicle.
According to one embodiment of the invention, the power supply terminal of the burglar alarm system is connected with the bus in the vehicle through a second switch assembly, and before the controlling the burglar alarm system in the vehicle to output the alarm signal, the method further comprises the following steps: triggering the second switch component to be switched on; and controlling a driving motor in the vehicle to enter a power generation mode, and charging a capacitor bridged in the bus so as to electrify an anti-theft alarm system in the vehicle.
According to an embodiment of the present invention, after the controlling the driving motor in the vehicle to enter the power generation mode, further includes: monitoring a bus voltage in the vehicle; under the condition that the bus voltage in the vehicle is monitored to be larger than or equal to a first threshold value, controlling a phase line of a driving motor in the vehicle to be short-circuited; and under the condition that the bus voltage in the vehicle is monitored to be less than or equal to a second threshold value, controlling a driving motor in the vehicle to reenter a power generation mode so as to continuously charge the capacitor connected in the bus until the bus voltage is greater than or equal to a first threshold value, wherein the second threshold value is less than the first threshold value.
According to one embodiment of the invention, the burglar alarm system comprises at least one of the following devices: sound equipment, photoelectric device, positioning device and car networking equipment.
According to one embodiment of the invention, the anti-theft alarm system comprises a positioning device and a vehicle networking device, and the anti-theft alarm system in the vehicle is controlled to output an alarm signal, and the anti-theft alarm system comprises: acquiring output position information of the positioning equipment; and sending the position information to a terminal associated with the vehicle through the Internet of vehicles equipment.
In order to achieve the above object, a second aspect of the present invention provides an antitheft device for a vehicle, including:
the detection module is used for determining whether the vehicle is in a back electromotive force electrifying state at present after a control circuit in the vehicle is electrified;
the first control module is used for controlling the phase line short circuit of the driving motor in the vehicle under the condition that the vehicle is in a back electromotive force electrifying state at present.
According to the anti-theft device for the vehicle, after a control circuit of the vehicle is electrified, whether the vehicle is in a counter potential electrifying state at present is detected, and under the condition that the vehicle is determined to be in the counter potential electrifying state at present, a phase line of a driving motor in the vehicle is controlled to be short-circuited. Therefore, the device enables the control circuit to be powered on according to the electromotive force generated when the wheels rotate caused by vehicle stealing behaviors, and when the vehicle is determined to be in a stolen state, the driving motor is braked by controlling the phase line short circuit of the driving motor in the vehicle, so that the vehicle is prevented from being stolen under the conditions that the lock of the vehicle is damaged and the wheels rotate, the reliability of vehicle theft prevention is improved, and the safety of the vehicle is ensured.
According to an embodiment of the present invention, the antitheft device of a vehicle further comprises: and the second control module is used for controlling an anti-theft alarm system in the vehicle to output an alarm signal.
According to an embodiment of the invention, the second control module is further configured to: and switching on a first switch component between a power supply end of an anti-theft alarm system in the vehicle and an output end of a back electromotive force inverter circuit in the vehicle.
According to an embodiment of the present invention, a power supply terminal of an anti-theft alarm system is connected to a bus in the vehicle through a second switch assembly, and the second control module further includes: the trigger unit is used for triggering the second switch component to be switched on; the first control unit is used for controlling a driving motor in the vehicle to enter a power generation mode and charging a capacitor connected in the bus in a bridging mode so as to electrify an anti-theft alarm system in the vehicle.
According to one embodiment of the invention, the first control module further comprises: a monitoring unit for monitoring a bus voltage in the vehicle; the second control unit is used for controlling the phase line short circuit of the driving motor in the vehicle under the condition that the bus voltage in the vehicle is monitored to be larger than or equal to a first threshold value; and the third control unit is used for controlling the driving motor in the vehicle to reenter a power generation mode under the condition that the bus voltage in the vehicle is monitored to be smaller than or equal to a second threshold value, so as to continuously charge the capacitor connected across the bus until the bus voltage is larger than or equal to a first threshold value, wherein the second threshold value is smaller than the first threshold value.
According to one embodiment of the invention, the burglar alarm system comprises at least one of the following devices: sound equipment, photoelectric device, positioning device and car networking equipment.
According to an embodiment of the invention, the anti-theft alarm system comprises a positioning device and a vehicle networking device, and the anti-theft device further comprises: the acquisition module is used for acquiring the output position information of the positioning equipment; and the sending module is used for sending the position information to a terminal associated with the vehicle through the Internet of vehicles equipment.
To achieve the above object, a third aspect of the present invention provides an electronic device, including: the anti-theft method for the vehicle comprises the following steps of storing a program, storing a computer program which is stored on the storing device and can be run on the processor, and realizing the anti-theft method for the vehicle according to the embodiment of the first aspect of the invention when the processor executes the program.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements an anti-theft method for a vehicle according to the first aspect of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flow chart illustrating an anti-theft method for a vehicle according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating an exemplary anti-theft method for a vehicle according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating another exemplary anti-theft method for a vehicle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an anti-theft device for a vehicle according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an anti-theft device for a vehicle according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An antitheft method, apparatus, device, and storage medium for a vehicle according to an embodiment of the present invention are described below with reference to the accompanying drawings.
It should be noted that the antitheft method for a vehicle according to the embodiment of the present invention is applicable to a vehicle having a drive motor and an inverter, for example, an electric bicycle or an electric motorcycle provided with a drive motor and an inverter.
The inverter in the embodiment of the application comprises a parasitic diode, wherein the parasitic diode is a diode for protecting the inverter, and the parasitic diode only allows current to flow in a single direction, so that the parasitic diode can realize the function of rectification.
Alternatively, the vehicle anti-theft method according to the embodiment of the present invention may be performed by an anti-theft device for a vehicle, which may be mounted on a control circuit of the vehicle to perform anti-theft control on the vehicle, where the anti-theft device for a vehicle according to the embodiment of the present invention may be a controller in the control circuit of the vehicle.
Fig. 1 is a schematic flow chart of an anti-theft method for a vehicle according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step 101, after a control circuit in a vehicle is powered on, whether the vehicle is in a back electromotive force power-on state is determined.
The control circuit is a circuit comprising a controller of the vehicle, and various functions of the vehicle, such as overcurrent protection, brake power off, electric quantity display and the like, can be realized through the control circuit.
It should be noted that the vehicle usually has the control circuit powered up in two scenarios. The first scenario is that the vehicle owner starts the vehicle normally, and is controlled by the vehicle owner, the bus of the vehicle is powered on, so that the control circuit connected with the bus is powered on, and the vehicle enters a normal running mode.
The second scenario is that the control circuit is electrified by counter electromotive force, that is, when the vehicle is pushed by external force to drive the wheels to rotate under the scenario that the vehicle is stolen, the wheels are connected with a driving motor of the vehicle through a power transmission system, and the driving motor is rotated by the rotation of the wheels, so that the driving motor generates counter electromotive force. Further, since the vehicle in the embodiment of the invention includes the inverter having the parasitic diode, the counter electromotive force generated by the driving motor is rectified into direct current by the parasitic diode of the inverter provided on the driving circuit of the vehicle, and the generated current is transmitted to the control circuit connected to the inverter to power on the control circuit.
Therefore, in the embodiment of the invention, after the control circuit in the vehicle is powered on, whether the vehicle is currently in the back-emf power-on state is determined, that is, whether the control circuit is powered on by the back-emf is determined, so as to determine whether the vehicle is currently in a stolen scene, and whether corresponding anti-theft measures are executed or not is determined subsequently.
In specific implementation, whether the vehicle is currently in the back-emf electrifying state or not can be detected in different modes according to actual conditions
As a possible implementation manner, whether the vehicle is currently in the back-emf electrifying state may be judged by detecting a state in which a key switch of the vehicle is currently located. Specifically, a sensor arranged at a key switch may be preset to detect a current position and a current direction of a key to determine that the switch is currently in an on state or an off state, and if it is detected that the key is currently in the off state and no keyless start operation sent by a user through a mobile terminal or the like is received, it may be determined that a vehicle owner does not start the vehicle, and the control circuit is that the vehicle is currently in a back-emf electrifying state due to back-emf electrifying.
As another possible implementation manner, the control circuit controls the instrument device of the vehicle to be powered on, the instrument device of the vehicle detects the powered-on state of the vehicle, and sends the detection result to the control circuit through the communication line to determine whether the current power-on is the power-on controlled by the owner or the back-emf power-on.
As still another possible implementation, it is also possible to preset the electric potential detection device on the control circuit, detect the electric potential of the control circuit at the time of power-on of the control circuit, and determine that the vehicle is currently in the counter-potential power-on state when it is detected that the control circuit is powered on by the counter-potential
It can be understood that, the present invention may also determine whether the vehicle is currently in the power-on state controlled by the vehicle owner through a method of determining whether the vehicle is powered on under the control of the vehicle owner in the related art, and if it is detected that the power-on of the control circuit is not controlled by the vehicle owner, determine whether the vehicle is currently in the back-emf power-on state, which is not limited herein.
And 102, controlling the phase line of the driving motor in the vehicle to be short-circuited under the condition that the vehicle is in the counter-potential electrifying state currently.
It should be noted that, when the phase line of the driving motor is short-circuited, the driving motor will be locked to generate a braking effect, and then the power transmission system will generate a large resistance and a shaking effect to the wheel to prevent the wheel from rotating, so that the vehicle is difficult to be pushed by external force to run, and therefore, the vehicle is prevented from being stolen, and an anti-theft effect is achieved.
In the embodiment of the invention, under the condition that the vehicle is determined to be in the back-emf power-on state currently, the phase lines of the driving motor in the vehicle are controlled to be short-circuited, for example, three phase lines of U, V and W in the driving motor are short-circuited together, so that the motor locking is realized. Therefore, the motor is controlled to be locked to block the vehicle from moving, and the vehicle is prevented from being stolen.
It should be noted that, as described above, the anti-theft method for a vehicle according to the embodiment of the present invention may be executed by the controller in the control circuit, and since the controller is powered by the back electromotive force generated by the driving motor, in practical applications, there may be a situation where the back electromotive force generated by the driving motor is insufficient, therefore, in order to ensure that the control circuit can maintain a powered state when the vehicle is stolen to prevent theft of the vehicle, in the embodiment of the present invention, the power-up of the control circuit may also be realized by a preset backup battery. Specifically, after the control circuit is powered on, if the current state of the vehicle in the counter electromotive force power-on state is detected, the control circuit can be connected with the backup battery, and the voltage stabilization of the control circuit is realized by the backup battery, so that when the counter electromotive force generated by the driving motor is insufficient, the backup battery is used as the power supply of the control circuit to ensure that the vehicle can be prevented from being stolen, and therefore the practicability and the reliability of the vehicle anti-theft method are improved.
In one embodiment of the invention, under the condition that the vehicle is determined to be in the counter-potential power-on state currently, in order to further improve the anti-theft effect, before the phase line of the driving motor in the vehicle is controlled to be short-circuited, an anti-theft alarm system in the vehicle can be controlled to output an alarm signal, wherein the anti-theft alarm system is a system for outputting the alarm signal to send vehicle theft information to a user so that the user can confirm the safety of the vehicle in time or warn and deter thieves, and therefore, auxiliary anti-theft can be realized on the basis of hindering the movement of the vehicle by outputting the alarm signal.
In an embodiment of the present invention, the burglar alarm system may include various types of devices, such as a sound device, an optoelectronic device, a positioning device, and a car networking device, and the alarm signal is a signal output by each type of device. Wherein, the sound equipment can be an alarm loudspeaker and is used for outputting alarm voice; the photoelectric equipment can be a warning lamp and plays a warning role by flashing light signals with different colors; the Positioning device may be a Global Positioning System (GPS) module disposed in the vehicle, and is configured to determine a current position of the vehicle; the in-vehicle device is an in-vehicle device that transmits information to an external terminal device by wireless communication technology. The burglar alarm system in the embodiment of the invention can be formed by combining one or more devices.
It can be understood that when the vehicle is detected to be in the counter-potential power-on state at present, it can be determined that the power-on of the control circuit is caused by the vehicle being pushed by an external force, and the vehicle may be in a situation of being stolen at present, and therefore, the anti-theft alarm system in the vehicle is controlled to output a corresponding alarm signal to achieve anti-theft.
In a specific implementation, in an embodiment of the present invention, the power-on state of the burglar alarm system in the vehicle may be controlled in different ways, and when the burglar alarm system is powered on, the burglar alarm system outputs an alarm signal.
As one possible implementation manner, a first switch component between a power supply terminal of an anti-theft alarm system in a vehicle and an output terminal of a back electromotive force inverter circuit in the vehicle is switched on. Specifically, the back electromotive force inverter circuit is a circuit including the inverter, and since the inverter can rectify the back electromotive force to output direct current through the parasitic diode, a first switch component can be arranged between a power supply end of the burglar alarm system and an output end of the back electromotive force inverter circuit in the vehicle in advance, and when it is determined that the vehicle is stolen, the first switch component can be controlled to be switched on, so that the back electromotive force inverter circuit supplies power to the burglar alarm system.
As another possible implementation manner, a standby battery pack may be arranged in the vehicle in advance, a switch component connected to the power supply of the burglar alarm system is arranged at the output end of the standby battery pack, and when the power supply of the burglar alarm system is determined to be controlled, the switch is controlled to be closed, so that the standby battery pack powers on the burglar alarm system in a state that the vehicle is not normally started.
In another embodiment of the invention, the alarm state of the anti-theft alarm system in the vehicle can be controlled, and the anti-theft alarm system is controlled to output the alarm signal by controlling the on and off of the alarm state of the anti-theft alarm system. Specifically, the anti-theft alarm system can be directly connected with the bus of the vehicle, namely when the bus of the vehicle is electrified, the anti-theft alarm system is powered on, whether the anti-theft alarm system is in an alarm state is controlled according to the current power-on state of the vehicle, and when the current illegal power-on state of the vehicle is detected, the anti-theft alarm system is controlled to be in the alarm state so as to send out an alarm signal. The method can be implemented only by setting a software program of the controller, so that hardware equipment such as a switch assembly and the like is avoided, and the cost is reduced.
In summary, according to the anti-theft method for the vehicle in the embodiment of the present invention, after the control circuit in the vehicle is powered on, it is determined whether the vehicle is currently in the state of being powered on by the back electromotive force, and under the condition that it is determined that the vehicle is currently in the state of being powered on by the back electromotive force, the phase line of the driving motor in the vehicle is controlled to be short-circuited. Therefore, the method enables the control circuit to be powered on according to the electromotive force generated when the wheels rotate caused by vehicle stealing behaviors, and enables the driving motor to brake by controlling the phase line short circuit of the driving motor in the vehicle when the vehicle is determined to be in a stolen state, so that the vehicle is prevented from moving.
Based on the above embodiment, the present invention may also realize vehicle theft prevention by supplying power to the theft prevention alarm system through the bus and intermittently locking the driving motor, and in order to more clearly explain the implementation principle of the manner, the present invention further provides a specific vehicle theft prevention method, and fig. 2 is a flowchart of the specific vehicle theft prevention method provided in the embodiment of the present invention.
As shown in fig. 2, the antitheft method of the vehicle includes the steps of:
step 201, triggering the second switch component to be switched on.
The second switch component is a switch for connecting a power supply end of the anti-theft alarm system and a bus in the vehicle.
In the embodiment of the invention, after the step of powering on the control circuit and detecting that the vehicle is in the illegal power-on state currently, the second switch component can be controlled to be switched on, so that the power supply end of the anti-theft alarm system is switched on with the bus in the vehicle, and the anti-theft alarm system is conveniently supplied with power through the bus subsequently.
It should be noted that, in this step, the alarm signal is output by the burglar alarm system by controlling the power-on state of the burglar alarm system in the vehicle based on the foregoing embodiment, that is, when the power-on state of the burglar alarm system in the vehicle is controlled, the second switch component may be preset, and when it is detected that the vehicle is currently in the back-emf power-on state, the second switch component is triggered to be turned on, so as to supply power through the bus in the following step. When the alarm state of the anti-theft alarm system in the vehicle is controlled to output the alarm signal, in one embodiment of the invention, the power supply end of the anti-theft alarm system can be also arranged to be directly connected with the bus in the vehicle, the specific arrangement mode can be determined according to actual needs, and the arrangement mode is not limited here.
Step 202, controlling a driving motor in the vehicle to enter a power generation mode, and charging a capacitor bridged in a bus so as to electrify an anti-theft alarm system in the vehicle.
The power generation mode refers to a mode in which the driving motor supplies power to the outside, and as can be seen from the above analysis, the driving motor can be controlled to output power to an external circuit due to the counter electromotive force generated by the driving motor in the current state.
The capacitor connected across the bus can be an energy storage capacitor.
In the embodiment of the invention, after the driving motor enters the power generation mode, voltage is applied to the bus connected with the driving motor, further, the bus voltage is raised, the capacitor connected in the bus in a bridging manner is charged, and electric energy is stored through the capacitor.
Furthermore, the capacitor is used as a power supply after being charged, and then the power supply is supplied to a power supply end of the anti-theft alarm system through a circuit where the second switch assembly is located, so that the anti-theft alarm system in the vehicle is powered on.
Therefore, the bus supplies power to the anti-theft alarm system, so that extra power supply lines or power supply equipment can be avoided from being arranged in the vehicle, and the anti-theft cost of the vehicle is reduced
Step 203, bus voltage in the vehicle is monitored.
In specific implementation, the voltage on the bus can be detected in real time through a voltage sensor preset on the bus.
And 204, controlling the phase line of the driving motor in the vehicle to be in short circuit under the condition that the bus voltage in the vehicle is monitored to be larger than or equal to the first threshold.
And when the bus voltage in the vehicle is monitored to be greater than or equal to the first threshold value, controlling the phase line of the driving motor in the vehicle to be in short circuit, so that the driving motor finishes the power generation mode and starts to brake the motor.
In an embodiment of the present invention, the first threshold may be set according to an interval time for controlling the motor to intermittently brake, specifically, the voltage value to which the bus is lifted after different interval times may be determined in advance through a large number of experiments, and the corresponding voltage threshold is set according to the interval time required in the practical application.
It will be appreciated that the first threshold may also be set according to other manners, such as setting the first threshold according to the highest safe voltage of the bus, and the like, and is not limited herein.
It should be noted that, the principle of preventing theft by controlling the short circuit of the phase line of the driving motor in the vehicle to brake the motor can be referred to the description of the above embodiments, and the description is omitted here.
And step 205, under the condition that the bus voltage in the vehicle is monitored to be smaller than or equal to a second threshold value, controlling the driving motor in the vehicle to reenter a power generation mode so as to continuously charge the capacitor connected across the bus until the bus voltage is larger than or equal to the first threshold value, wherein the second threshold value is smaller than the first threshold value.
It should be noted that, when the driving motor finishes the power generation mode and enters the braking state, since the driving motor does not apply voltage to the bus any more and the electrical system of the vehicle continuously consumes electrical energy, the bus voltage gradually falls back, and when it is detected that the bus voltage is reduced to be less than or equal to the second threshold value, the short-circuited phase line in the driving motor in the vehicle is controlled to be separated, so that the driving motor enters the power generation mode again, and the bus voltage is raised again, so as to continue to charge the capacitor bridged in the bus.
Further, the step 204 and the step 205 are repeatedly executed, when the bus voltage rises to be greater than or equal to the first threshold value under the action of the driving motor, the driving motor works in the braking mode, the driving motor is locked to block the vehicle from running, the bus voltage is dropped, and when the bus voltage drops to be less than or equal to the second threshold value, the driving motor is controlled to work in the power generation mode again to enable the bus voltage to rise again. Therefore, the driving motor is switched between the power generation mode and the braking mode according to the relation between the bus voltage and the threshold voltage, and the vehicle is prevented from moving in an intermittent locking mode of the driving motor, so that the vehicle locking function is realized.
It can be understood that, in the embodiment of the invention, as the electric energy is stored in the capacitor, when the driving motor is braked, the electric energy stored in the capacitor can continuously supply power to the anti-theft alarm system, so that the anti-theft alarm system is continuously in a working state, and the anti-theft alarm system continuously outputs alarm information. Therefore, the anti-theft of the vehicle is realized in a mode that the driving motor intermittently locks to prevent the vehicle from moving and continuously output alarm information.
In summary, in the anti-theft method for the vehicle according to the embodiment of the present invention, the second switch assembly is triggered to be turned on, the driving motor in the vehicle is controlled to enter the power generation mode, the capacitor across the bus is charged, so that the anti-theft alarm system in the vehicle is powered on, the bus voltage in the vehicle is monitored in real time, the phase line of the driving motor in the vehicle is controlled to be short-circuited when the bus voltage in the vehicle is monitored to be greater than or equal to the first threshold, and the driving motor in the vehicle is controlled to enter the power generation mode again when the bus voltage in the vehicle is monitored to be less than or equal to the second threshold, so that the capacitor across the bus is continuously charged until the bus voltage is greater than or equal to the first threshold. Therefore, the method realizes the switching of the driving motor between the power generation mode and the braking mode, realizes the anti-theft of the vehicle by the mode that the driving motor intermittently locks to block the movement of the vehicle and continuously outputs alarm information, and improves the reliability of the anti-theft of the vehicle. In addition, the bus supplies power to the anti-theft alarm system, so that extra power supply lines or power supply equipment can be avoided from being arranged in the vehicle, and the anti-theft cost of the vehicle is reduced.
Based on the above embodiment, in order to describe a specific implementation manner of implementing theft prevention more clearly according to the alarm information output by the positioning device and the internet of vehicles in the theft prevention alarm system, the invention further provides another specific control method of the vehicle engine.
Fig. 3 is a schematic flow chart of another specific control method for a vehicle engine according to an embodiment of the present invention, and as shown in fig. 3, the control method for the vehicle engine includes the following steps:
step 301, obtaining the position information output by the positioning device.
Specifically, after an anti-theft alarm system in the vehicle is powered on, a positioning device arranged in the vehicle detects the current position of the vehicle through a global positioning system.
Step 302, the position information is sent to the terminal associated with the vehicle through the vehicle network device.
The terminal associated with the vehicle may be a terminal device that is paired with the vehicle network device in advance and has verified the validity, and for example, it may be a mobile terminal of a user.
Specifically, the vehicle network device is connected with the positioning device, the vehicle network device line acquires the position information of the vehicle sent by the positioning device, and then the position information of the vehicle and information reminding a user, such as text information of 'your vehicle may be stolen and please confirm in time', are sent to the associated terminal through the wireless communication technology, so that the user can be reminded of the existence of the theft risk of the vehicle in time, accurate current position information of the vehicle is provided for the user, and the user can go to a specified place for troubleshooting conveniently.
In an embodiment of the present invention, the vehicle network device may further send the location information to a cloud platform for vehicle management or a police cloud platform, so as to record the location of the vehicle through the cloud platform, facilitate vehicle recovery, and seek police assistance when the user is inconvenient to determine the vehicle condition, and the like.
According to the anti-theft method for the vehicle, disclosed by the embodiment of the invention, the vehicle position information output by the positioning equipment is firstly acquired, and then the position information is sent to the terminal associated with the vehicle through the vehicle network equipment. Therefore, the reminding information can be sent to the vehicle owner in time, the vehicle owner can obtain the real-time vehicle position information, and the vehicle stealing behavior can be successfully prevented.
In order to implement the above embodiment, an embodiment of the present invention further provides an anti-theft device for a vehicle, and as shown in fig. 4, the anti-theft device for a vehicle according to the embodiment of the present invention may include: a detection module 100 and a first control module 200.
The detection module 100 is used for determining whether the vehicle is currently in a back-emf power-on state after a control circuit in the vehicle is powered on.
The control system comprises a first control module 200 for controlling the phase line of a driving motor in the vehicle to be short-circuited in case the vehicle is currently in a back-emf powered state.
Further, in a possible implementation manner of the embodiment of the present invention, as shown in fig. 6, on the basis of the anti-theft device shown in fig. 5, the anti-theft device for a vehicle further includes: the second control module 300, the obtaining module 400 and the sending module 500, the second control module 300 includes: the triggering unit 310 and the first control unit 320, the first control module 200 further includes: a monitoring unit 210, a second control unit 220 and a third control unit 230.
The second control module 300 is configured to control an anti-theft alarm system in a vehicle to output an alarm signal.
An obtaining module 400, configured to obtain the output location information of the positioning apparatus.
A sending module 500, configured to send the location information to a terminal associated with the vehicle through a vehicle network device.
In an embodiment of the present invention, the second control module 300 is specifically configured to switch on the first switch component between the power supply terminal of the burglar alarm system in the vehicle and the output terminal of the back electromotive force inverter circuit in the vehicle.
In a possible implementation manner of the embodiment of the present invention, a power supply terminal of the burglar alarm system is connected to a bus in the vehicle through a second switch component, the triggering unit 310 is configured to trigger the second switch component to be turned on, and the first control unit 320 is configured to control a driving motor in the vehicle to enter a power generation mode, so as to charge a capacitor across the bus, so as to power on the burglar alarm system in the vehicle.
Further, the monitoring unit 210 is used to monitor the bus voltage in the vehicle. And the second control unit 220 is used for controlling the phase line of the driving motor in the vehicle to be short-circuited under the condition that the bus voltage in the vehicle is monitored to be greater than or equal to the first threshold value. And a third control unit 230, configured to, when it is monitored that the bus voltage in the vehicle is less than or equal to a second threshold value, control the driving motor in the vehicle to reenter the power generation mode to continue charging the capacitor connected across the bus until the bus voltage is greater than or equal to the first threshold value, where the second threshold value is less than the first threshold value.
In a possible implementation manner of the embodiment of the present invention, the burglar alarm system includes at least one of the following devices: sound equipment, photoelectric device, positioning device and car networking equipment.
It should be noted that the foregoing explanation of the embodiment of the vehicle anti-theft method is also applicable to the vehicle anti-theft device of this embodiment, and will not be described herein again.
In summary, the anti-theft device for a vehicle according to the embodiments of the present invention detects whether the vehicle is currently in the back-emf energizing state after the control circuit in the vehicle is energized, and controls the phase line of the driving motor in the vehicle to be short-circuited when it is determined that the vehicle is currently in the back-emf energizing state. Therefore, the device enables the control circuit to be powered on according to the electromotive force generated when the wheels rotate caused by vehicle stealing behaviors, and when the vehicle is determined to be in a stolen state, the driving motor is braked by controlling the phase line short circuit of the driving motor in the vehicle, so that the vehicle is prevented from moving.
In order to implement the foregoing embodiment, an electronic device 60 is further provided in an embodiment of the present invention, as shown in fig. 6, the electronic device 60 may specifically include a memory 61, a processor 62, and a computer program stored on the memory 61 and operable on the processor 62, and when the processor 62 executes the program, the vehicle anti-theft method as shown in the foregoing embodiment is implemented.
In order to implement the above-described embodiments, an embodiment of the present invention also proposes a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the antitheft method of a vehicle as shown in the above-described embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (11)
1. An antitheft method for a vehicle, comprising:
after a control circuit in the vehicle is powered on, determining whether the vehicle is in a back electromotive force power-on state currently, wherein the control circuit is connected with a back electromotive force inverter circuit in the vehicle so as to power on the control circuit when the back electromotive force inverter circuit outputs current;
in a case that the vehicle is currently in a back-emf power-on state, controlling a phase line short circuit of a driving motor in the vehicle, and before the controlling the phase line short circuit of the driving motor in the vehicle, further comprising: the method comprises the following steps of controlling an anti-theft alarm system in the vehicle to output an alarm signal, wherein a power supply end of the anti-theft alarm system is connected with a bus in the vehicle through a second switch assembly, and before controlling the anti-theft alarm system in the vehicle to output the alarm signal, the method further comprises the following steps: triggering the second switch component to be switched on; and controlling a driving motor in the vehicle to enter a power generation mode, and charging a capacitor bridged in the bus so as to electrify an anti-theft alarm system in the vehicle.
2. The method of claim 1, before said controlling an burglar alarm system in said vehicle to output an alarm signal, further comprising:
and switching on a first switch component between a power supply end of an anti-theft alarm system in the vehicle and an output end of a back electromotive force inverter circuit in the vehicle.
3. The method of claim 1, after the controlling a drive motor in the vehicle to enter a generating mode, further comprising:
monitoring a bus voltage in the vehicle;
under the condition that the bus voltage in the vehicle is monitored to be larger than or equal to a first threshold value, controlling a phase line of a driving motor in the vehicle to be short-circuited;
and under the condition that the bus voltage in the vehicle is monitored to be less than or equal to a second threshold value, controlling a driving motor in the vehicle to reenter a power generation mode so as to continuously charge the capacitor connected in the bus until the bus voltage is greater than or equal to a first threshold value, wherein the second threshold value is less than the first threshold value.
4. The method of claim 1, wherein the burglar alarm system comprises a positioning device and a vehicle networking device, and the controlling the burglar alarm system in the vehicle to output an alarm signal comprises:
acquiring position information output by the positioning equipment;
and sending the position information to a terminal associated with the vehicle through the Internet of vehicles equipment.
5. An antitheft device for a vehicle, characterized by comprising:
the detection module is used for determining whether the vehicle is in a counter electromotive force electrifying state at present or not after a control circuit in the vehicle is electrified, wherein the control circuit is connected with a counter electromotive force inverter circuit in the vehicle so as to electrify the control circuit when the counter electromotive force inverter circuit outputs current;
the first control module is used for controlling the phase line short circuit of a driving motor in the vehicle under the condition that the vehicle is currently in a back electromotive force electrifying state;
the second control module is used for controlling an anti-theft alarm system in the vehicle to output an alarm signal, a power supply end of the anti-theft alarm system is connected with a bus in the vehicle through a second switch component, and the second control module further comprises: the trigger unit is used for triggering the second switch component to be switched on; the first control unit is used for controlling a driving motor in the vehicle to enter a power generation mode and charging a capacitor connected in the bus in a bridging mode so as to electrify an anti-theft alarm system in the vehicle.
6. The anti-theft device of claim 5, wherein said second control module is further configured to:
and switching on a first switch component between a power supply end of an anti-theft alarm system in the vehicle and an output end of a back electromotive force inverter circuit in the vehicle.
7. The anti-theft device of claim 5, wherein said first control module further comprises:
a monitoring unit for monitoring a bus voltage in the vehicle;
the second control unit is used for controlling the phase line short circuit of the driving motor in the vehicle under the condition that the bus voltage in the vehicle is monitored to be larger than or equal to a first threshold value;
and the third control unit is used for controlling the driving motor in the vehicle to reenter a power generation mode under the condition that the bus voltage in the vehicle is monitored to be smaller than or equal to a second threshold value, so as to continuously charge the capacitor connected across the bus until the bus voltage is larger than or equal to a first threshold value, wherein the second threshold value is smaller than the first threshold value.
8. An anti-theft device according to any one of claims 5 to 7, characterized in that said anti-theft alarm system comprises at least one of the following devices: sound equipment, photoelectric device, positioning device and car networking equipment.
9. The anti-theft device according to claim 8, wherein the anti-theft alarm system includes a positioning device and a car networking device, the anti-theft device further comprising:
the acquisition module is used for acquiring the position information output by the positioning equipment;
and the sending module is used for sending the position information to a terminal associated with the vehicle through the Internet of vehicles equipment.
10. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements a method of theft protection for a vehicle as claimed in any one of claims 1 to 4.
11. A computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements an antitheft method of a vehicle according to any one of claims 1 to 4.
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| CN202011401614.2A CN112572341B (en) | 2020-12-02 | 2020-12-02 | Vehicle anti-theft method, device, equipment and storage medium |
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| CN202011401614.2A CN112572341B (en) | 2020-12-02 | 2020-12-02 | Vehicle anti-theft method, device, equipment and storage medium |
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| EP1400937A1 (en) * | 2002-09-12 | 2004-03-24 | TeamSharp Space Tech Inc. | Communication and burglary-prevention system for motorcycles |
| CN101934781A (en) * | 2010-09-06 | 2011-01-05 | 西安信唯信息科技有限公司 | Electric vehicle motor antitheft method and device thereof |
| CN110696770A (en) * | 2018-07-10 | 2020-01-17 | 广州小鹏汽车科技有限公司 | Vehicle anti-theft method, device, readable medium and electric vehicle |
| CN109760608B (en) * | 2019-01-28 | 2021-06-08 | 纳恩博（北京）科技有限公司 | Reverse power supply method, device and system |
| CN110435790A (en) * | 2019-07-25 | 2019-11-12 | 上海钧正网络科技有限公司 | Anti-theft detection system and method for vehicle |
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