CN106080857A - A kind of anti-theft system of electromotor car control method - Google Patents

Abstract

The invention discloses a control method for an anti-theft system of an electric vehicle, which mainly includes: judging whether an arming button is pressed on the remote controller, and if the arming button is pressed, the system enters the arming state; a vibration sensing unit judges whether there is vibration in the outside world, and if there is vibration , the vibration sensing unit generates vibration feedback, transmits the feedback signal to the alarm circuit, and at the same time transmits the feedback signal to the sound and light alarm circuit on the remote control through wireless data transmission; when the timing reaches the set value of the clock circuit, stop the alarm and return to the arming state; judge whether there is a disarm button on the remote control is pressed, if there is a disarm button pressed, the relay will lose power and the main circuit will be turned on, which can overcome the single trigger point and the inability to defend independently after the vibration sensor is damaged in the prior art. In the case of wireless anti-theft, the wireless remote control anti-theft can not synchronize the information of the electric vehicle to the owner's defect, so that the vibration sensing circuit of the anti-theft is more reliable, more sensitive and more efficient, and at the same time realize the function of two-way alarm for electric vehicles.

Description

A control method for an electric vehicle anti-theft system

technical field

The invention relates to the field of anti-theft technology, in particular to a control method for an anti-theft system of an electric vehicle.

Background technique

With the development of industry, traditional energy sources are shrinking, and resources are unsustainable. Most of the energy closely related to daily life like oil comes from imports and is easily affected by external factors. For example, the second Iraq war made the global oil supply tense, and OPEC kept raising the price of crude oil in order to protect its own interests. Moreover, our country's oil reserves are not large, so the oil price fluctuates severely, and the five-yuan era quickly returned to the six-yuan era after only a few days. Coupled with the proposal of the national sustainable development strategy and the improvement of environmental protection awareness, electric vehicles came into being in such a market environment. It uses renewable energy electric energy as the driving energy. Electric vehicles have a great advantage in the price advantage of one-time consumption and subsequent consumption, and they are convenient, fast, energy-saving and environmentally friendly, occupying a small space, and basic during driving. The advantage of no noise pollution is sought after by the working class, the student party and short-distance travellers, and its development prospects are very broad.

Compared with vehicles such as automobiles and motorcycles that use petroleum as energy, electric vehicles are low-speed vehicles, which makes them easier to control and less likely to cause accidents during low-speed driving, making electric vehicles have better characteristics. safety and reliability. In addition, its requirements for energy supply are not as harsh as traditional energy sources, and there must be gas stations. Electric vehicles only need a 220V charging socket, which is more convenient for people's daily life. No matter where they drive, as long as there is a home, they can charge the car, saving the trouble of finding a gas station. With the development of charging technology, the construction and investment of charging piles, the speed of using charging has achieved a qualitative leap, so electric vehicles are the preferred means of transportation for office workers and students who travel short distances, and there will be more and more people in the future. Become an electric vehicle user.

However, just because more and more people choose electric vehicles as a means of transportation, it also brings huge temptation to theft. Since the vast majority of electric vehicles have not been registered in the traffic police department and the anti-theft technology is not yet perfect, electric vehicles are easy to obtain and sell stolen goods, and the vehicle information cannot be provided after the electric vehicle is stolen, which makes it difficult to recover the electric vehicle. situation. And because the price of lead continues to rise, more and more thieves have also turned their attention to the storage battery of electric vehicles. Theft cases are not uncommon. Therefore, a new anti-theft system that is comprehensive, reliable, efficient, and cost-effective for mass consumption is extremely in line with the needs of the market, and the topic comes from this.

As the requirements and demands of electric vehicle users for the anti-theft system continue to rise, the development of the electric vehicle anti-theft system is also forced to be more rapid and more mature. At present, there are relatively advanced GPS global satellite positioning anti-theft systems, GSM mobile communication network anti-theft systems, GPRS (General Packet Radio Service) network anti-theft systems and intelligent anti-theft systems.

There are various anti-theft methods for electric vehicles, and the types are roughly divided into lock anti-theft devices, wireless remote control anti-theft devices, electromechanical anti-theft devices, and network anti-theft devices. What my country uses most at present is exactly the combined anti-theft method of lockset anti-theft device cooperating with wireless remote control type anti-theft device. Anti-theft locks generally use mechanical locks to lock the handlebars or wheels to prevent the vehicle from being stolen. Although mechanical locks have made breakthroughs in technology and materials over the years, mechanical locks can only prevent theft and cannot alarm. Waiting for work, and the mechanical lock is very easy to be picked. Especially vulnerable to a single blow at all under the hydraulic pliers, so that the lock anti-theft device can only prevent theft to a certain extent and delay the time of theft. And the wireless remote control type anti-theft cannot synchronize the information of the electric vehicle to the car owner. In many cases, it is still easy for criminals to succeed. For example, in a noisy environment or during a thunderstorm, the electric vehicle is easily triggered by the external environment to generate an alarm. At this time, no one will pay attention to the situation of the electric vehicle. If At this time, someone is eyeing the electric car that has taken you, and they can easily succeed in two minutes. Therefore, electronic anti-theft like this is far from being able to meet the requirements of anti-theft. In foreign countries, many car owners will choose GPS global positioning system to protect their cars. For example, the 10 Electrified electric moped launched by vanmoof has batteries built into the frame during manufacture, which effectively prevents the risk of battery theft, and a GPS module is installed inside the vehicle. Even if it is stolen, you can know where your car is through the Internet, and recover the car with the help of the police. Because the one-time cost of installing GPS, GSM, and GPRS is much higher than other anti-theft methods, and users are required to pay follow-up service fees, this makes most electric vehicle owners unwilling to accept it and cannot be widely used, so they are in the electric vehicle market. The prospects are less.

In the process of realizing the present invention, the inventor found that in the prior art at least most electric vehicle users still use anti-theft devices such as mechanical anti-theft and one-way anti-theft mode, which cannot effectively ensure the safety of electric vehicles. At the same time, electric vehicles In the design of anti-theft, the vibration sensing module of the electric vehicle is easily triggered to generate false alarms. At the same time, in the design of wireless anti-theft, the wireless remote control anti-theft cannot synchronize the information of the electric vehicle to the owner and other defects.

Contents of the invention

The purpose of the present invention is to solve the above problems and propose a control method for an electric vehicle anti-theft system, so as to prevent false alarms of the electric vehicle and immediately notify the owner whether the electric vehicle is stolen, thereby realizing the advantages of two-way alarming.

In order to achieve the above object, the technical solution adopted in the present invention is: a control method for an electric vehicle anti-theft system, which mainly includes the following steps:

a. system initialization;

b. Determine whether the arm button is pressed on the remote control, if there is an arm button pressed, the relay is powered, the main circuit is disconnected, and the system enters the arm state;

c. The vibration sensing unit judges whether there is vibration in the outside world. If there is vibration, the vibration sensor is triggered. The vibration sensing unit generates vibration feedback, transmits the feedback signal to the alarm circuit and triggers the clock circuit, and at the same time transmits the feedback signal to the remote control via wireless. The sound and light alarm circuit; the alarm circuit and the sound and light alarm circuit start to alarm after being triggered; if the vibration sensing unit judges that there is no vibration in the external connection, then proceed to step e;

d. When the timing reaches the set value of the clock circuit, stop the alarm and return to the armed state;

e. Determine whether the disarm button on the remote control is pressed, if there is a disarm button pressed, the relay will lose power, the main circuit will be turned on, and return to step a.

Further, step a also includes that when the arming button on the remote controller is pressed to enter the arming state, the wireless sending module at the remote controller continuously sends wireless signals to the receiving module of the control unit, and when the control unit cannot receive the signal sent by the remote controller, When there is a wireless signal, the alarm circuit is triggered to alarm. Further, the step b is specifically, when the anti-theft button is pressed, a high-level signal is sent to the P1.2 port of the single-chip microcomputer through wireless data transmission, and P1.0 outputs a low-level signal to the relay after being processed by the single-chip microcomputer. The relay is off.

Further, the step c is specifically, when the vibration sensing unit is triggered, it outputs a high level to the P2. 0 outputs a high level to the wireless transmitter module of the vehicle system, and feeds the wireless data to the remote control to trigger the sound and light alarm circuit.

Further, the step e is specifically to input a high-level signal to the P1.3 port of the single-chip microcomputer through wireless data transmission when the remote control presses the disarm key, and after being processed by the single-chip microcomputer, P1.0 outputs a high level The signal is sent to the relay, and the relay is turned on.

Further, the vibration sensing unit includes two vibration sensing sensors, operational amplifiers, sliding rheostats and resistors, and the two vibration sensing sensors are of SW-18010P type, with a maximum working voltage of 12V, a current of 0.2A, and an insulation resistance of It is only 10Ω, the working humidity is 80, the working temperature is 26°C, and it can be triggered and used 500,000~700,000 times; when any one of the two vibration sensors is triggered by vibration, the output voltage changes, and the signal generated by the operational amplifier is filtered and After the operation is amplified and processed, it is passed to the single-chip microcomputer, and after being processed by the single-chip microcomputer, a vibration alarm is issued and the information is fed back to the remote control to complete the self-defense and anti-theft prompt.

Further, the set value of the clock circuit is 5S.

Further, the wireless data transmission specifically adopts a DF wireless data transceiver module, and the DF wireless data transceiver module adopts a voltage of 12V and a transmission frequency of 315HZ.

Further, the relay adopts SRD_05VDC_SL_C, the working voltage is set to 5V, and the primary coil voltage is DC5V.

Further, the alarm circuit includes a high-frequency buzzer, a crystal transistor and a resistor. After pressing the arming button, when the battery protection circuit and the alarm are tested, P1.7 outputs a low level, and the transistor is turned on, thereby making the buzzer The device forms a closed loop, the buzzer sends out an alarm sound, and the work of the alarm circuit is controlled by the P1.1 port of the single-chip microcomputer.

The various embodiments of the present invention mainly include: system initialization; judging whether there is a disarm button pressed on the remote controller, if there is a disarm button pressed, the system enters the arming state; the vibration sensing unit judges whether there is vibration in the outside world, if there is vibration, The vibration sensing unit generates vibration feedback, transmits the feedback signal to the alarm circuit and triggers the clock circuit, and at the same time transmits the feedback signal to the sound and light alarm circuit on the remote control through wireless data transmission; when the timing reaches the set value of the clock circuit, it stops Alarm and return to the armed state; judge whether there is a disarm button on the remote control is pressed, if there is a disarm button pressed, the relay will lose power, the main circuit will be turned on, and the communication distance between the remote control and the tram is set to be short, when the tram and the remote control If the communication at the terminal is interrupted, the electric car will call the police in time, so as to overcome the existing technology that the vibration sensing module of the electric car is easily triggered and cause false alarms, effectively avoiding a single trigger point and preventing the vibration sensor from being damaged. The vibration sensing circuit is more reliable, more sensitive, and more efficient. It overcomes the defects that the wireless remote control anti-theft cannot synchronize the information of the electric car to the owner in the design of the wireless anti-theft. At the same time, the communication distance between the remote control and the electric car is set. If the tram is moved by someone, or other communication failures between the tram and the remote control occur, such as when the communication terminal of the tram is deliberately damaged or blocked, the alarm circuit of the tram will also alarm to remind the owner, thereby improving the anti-theft performance of the electric vehicle, and Realize the function of two-way alarm for electric vehicles, and further improve the anti-theft performance.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a kind of electric vehicle anti-theft system control method control flowchart of the present invention;

2 is a circuit diagram of a vibration sensing unit of a control method of an electric vehicle anti-theft system according to the present invention;

Fig. 3 is an alarm circuit diagram of an electric vehicle anti-theft system control method according to the present invention.

detailed description

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Specifically, in conjunction with FIG. 1, the electric vehicle anti-theft control method includes the following steps:

a. system initialization;

b. Determine whether the arm button is pressed on the remote control, if there is an arm button pressed, the relay is powered, the main circuit is disconnected, and the system enters the arm state;

c. The vibration sensing unit judges whether there is vibration in the outside world. If there is vibration, the vibration sensor is triggered. The vibration sensing unit generates vibration feedback, transmits the feedback signal to the alarm circuit and triggers the clock circuit, and at the same time transmits the feedback signal to the remote control via wireless. The sound and light alarm circuit; the alarm circuit and the sound and light alarm circuit start to alarm after being triggered; if the vibration sensing unit judges that there is no vibration in the external connection, then proceed to step e;

d. When the timing reaches the set value of the clock circuit, stop the alarm and return to the armed state;

e. Determine whether the disarm button on the remote control is pressed, if there is a disarm button pressed, the relay will lose power, the main circuit will be turned on, and return to step a.

Step a also includes that when the arming button on the remote controller is pressed to enter the arming state, the wireless sending module at the remote controller continuously sends wireless signals to the receiving module of the control unit, and when the control unit cannot receive the wireless signal sent by the remote controller , Trigger the alarm circuit to alarm.

The step b is specifically, when the anti-theft button is pressed, a high-level signal is sent to the P1.2 port of the single-chip microcomputer through wireless data transmission, and after processing by the single-chip microcomputer, P1.0 outputs a low level to the relay, and the relay is disconnected .

Said step c is specifically, when the vibration sensing unit is triggered, it outputs a high level to the P2.4 port of the single-chip microcomputer, and after being processed by the single-chip microcomputer, the single-chip microcomputer P1.1 outputs a low level to the alarm circuit, and the single-chip microcomputer P2.0 outputs a high level The level is given to the wireless transmitter module of the vehicle system, and the wireless data is fed back to the remote control to trigger the sound and light alarm circuit.

Said step e is specifically that when the remote control presses the disarm key, a high-level signal is input to the P1.3 port of the single-chip microcomputer through wireless data transmission, and after being processed by the single-chip microcomputer, P1.0 outputs a high-level signal to the relay , the relay is turned on.

The control process of the electric vehicle anti-theft system, first, set the working mode of the programmable chip, and then initialize the parameter area in the memory. When the value is input from the outside, read the value and jump to the corresponding function. After completing a series of processes, the subroutine returns to the original main program until external data is input. For example, when the car is locked by remote control, the relay works to disconnect the main circuit, and the vibration sensing circuit and the touch sensing circuit enter the working state at the same time. Once punished by the outside, the electric car will alarm and the program will return to the state after locking the car. When unlocking is selected, the relay loses power, the main circuit is turned on, and the program returns to the state before locking the car.

When the arming button is pressed, a high-level signal is sent to the P1.2 port of the single-chip microcomputer through wireless data transmission, and P1.0 outputs a low-level signal to the relay after being processed by the single-chip microcomputer. The function of relay disconnection after arming is completed.

After arming, the system enters the anti-theft state. When the vibration sensing circuit is triggered, it outputs a high level to the P2.4 port of the microcontroller. After being processed by the single-chip microcomputer, the IO port P1.1 of the single-chip microcomputer outputs a low level to the alarm circuit, and P2.0 outputs a high level to the wireless transmission module of the vehicle system. After the arming is completed, the vibration alarm is triggered to make the alarm circuit work and alarm, and the triggered signal is fed back to the remote control by wireless data.

At the same time, set the wireless communication distance between the remote control end and the tram control unit as a short distance, such as 5m-10m. If the communication is interrupted, the electric car triggers the alarm circuit to send out an alarm signal to remind the electric car that the state is abnormal. The risk of trams being transferred and stolen is avoided, and the risk of trams being deliberately destroyed is also avoided.

When the remote control presses the disarm button, the high-level signal is input to the P1.3 port of the single-chip microcomputer through wireless data transmission. After processing by the single-chip microcomputer, the IO port P1.0 outputs a high-level signal to the relay to complete the disconnection of the relay.

In Fig. 2, the vibration sensing unit includes two vibration sensing sensors, operational amplifiers, sliding rheostats and resistors, the two vibration sensing sensors are SW-18010P type, the maximum operating voltage is 12V, and the current is 0.2A. The insulation resistance is only 10Ω, the working humidity is 80, and the working temperature is 26°C. It can be triggered and used 500,000~700,000 times; when any one of the two vibration sensors is triggered by vibration, the output voltage changes, and the signal generated by the operational amplifier passes through the After filtering and operational amplification processing, it is transmitted to the single-chip microcomputer, and then after the single-chip processing, a vibration alarm is issued and the information is fed back to the remote control to complete autonomous defense and anti-theft prompts.

Vibration sensing circuit is one of the important ways of active anti-theft of electric vehicle anti-theft system. The circuit consists of two SW_18010P vibration sensors, an operational amplifier LM393, two sliding rheostats and several resistors. When there is no vibration, there is no output voltage. When any one of the two vibration sensors is triggered by vibration, the output voltage changes. After passing through the voltage comparator of LM393, the generated signal is processed by filtering and operational amplification, and then the changed The signal is transmitted to the P2.4 port of the single-chip microcomputer. After being processed by the single-chip microcomputer, a vibration alarm is issued and the information is fed back to the remote control terminal of the car owner to complete the self-defense and anti-theft reminder of the anti-theft system. The circuit uses two vibration sensors as trigger devices, which effectively avoids a single trigger point and prevents the vibration sensor from being unable to defend itself after damage, making the entire vibration sensing circuit more reliable, sensitive and efficient.

The vibration switch is the main part of the entire vibration sensing module, and is an important part of the active anti-theft system of the electric vehicle anti-theft system. We had to make sure it was sensitive and flexible triggering and reliability. Therefore, this design chooses SW-18010P type vibration switch, which belongs to the spring type switch in the vibration switch. Compared with the marble type switch, it needs to be tiled to realize the function. SW-18010P has a wider trigger angle and stronger work adaptability. It is more flexible in actual use. Moreover, its maximum working voltage is 12V, current is 0.2A, insulation resistance is only 10Ω, working humidity is 80, working temperature is 26°C, it can be triggered and used 500,000~700,000 times, and its triggering uses vibration force and centrifugal force The size makes the SW-18010P very reliable in use. Coupled with its highly sensitive characteristics, the SW-18010P is fully qualified for the design requirements of the vibration switch.

The microcontroller adopts AT89S51. As the nerve center of the entire anti-theft system, the single-chip microcomputer needs to complete the collection, processing and output of all signals. Therefore, when selecting a single-chip microcomputer, we should select the most suitable single-chip microcomputer model for the needs of the system based on multiple factors such as power consumption, data processing capability, stability, memory space, and programming software convenience under working conditions. Because there are many optional brands and models of the single-chip microcomputer, the design selects the AT89C51 single-chip microcomputer produced by ATMEL Company. It has the following conventional functions: 128B data memory, 8K program memory, 1000 erasing cycles, fully static logic operation in 0HZ~33MHZ, 1 full-duplex asynchronous serial port and other traditional features. On the previous basis, the online programmable function is added, which makes the online programming method more flexible and greatly facilitates the work of system debugging. A watchdog timer is also added to improve the anti-interference performance of the entire system and make the system more stable during data processing. The idle mode and power-down mode make the power consumption of the microcontroller lower, plus the interrupt recovery mode in the power-down state.

Combining the characteristics and advantages of the above AT89S51, it can fully meet the requirements of the anti-theft system for single-chip power consumption, data processing capabilities, stable memory space and programming convenience, so the AT89S51 single-chip produced by ATMEL company is selected for design.

The wireless data transmission specifically adopts the DF wireless data transceiver module, and the DF wireless data transceiver module adopts a voltage of 12V and a transmission frequency of 315HZ

The wireless data transceiver module is the core component of the data transmission of the whole system, and it needs to complete the transmission of all control signals and feedback signals. Because the system requires about 300m for wireless data transmission distance, and the requirements for hardware power and cost are as low as possible. Common wireless transmissions include infrared, 3G, DF wireless transmission, etc. Since infrared is also a kind of light, it cannot penetrate opaque objects, and it can only perform point-to-point straight-line data transmission. This makes the complex terrain and unpredictable obstacles make infrared rays unable to meet the requirements of the anti-theft system in actual use. Although 3G wireless transmission has a large area of network coverage and a fast transmission rate, the one-time purchase cost and later use cost cannot meet the system's price requirements. DF wireless data transmission has a working voltage of 3V~12V, and the transmission power is moderate. It adopts the SAW resonator to stabilize the frequency, and the frequency stability is extremely high. It can be used in the environment of -25℃~+85℃. When the voltage is 9V, the transmission distance in the open area can reach 300~500m; when the voltage reaches 12V, it is the best transmission state, and the transmission distance can reach 700~800m. And its cost is low, a set of data transceiver module is only about 15 yuan.

To sum up, the DF wireless data transceiver module is fully qualified for the design requirements. Because there will be obstacles in daily use and affected by the environment, the real effective transmission distance is only about half of the test data, so the design uses a DF wireless data transceiver module with a voltage of 12V and a transmission frequency of 315MHZ as the wireless data transmission. transceiver equipment.

The relay adopts SRD_05VDC_SL_C, the working voltage is set to 5V, and the primary coil voltage is DC5V.

The relay is used to correspondingly control the power-on and power-off functions of the electric car main circuit when the car owner armes and disarms the electric car anti-theft system. It is the main device of the relay protection circuit. Because there are two voltages of 12V and 5V available in the electric car owner system, considering the power requirements of the system design to reduce power consumption as much as possible, this design uses a relay with a voltage value of 5V, and its primary coil voltage is DC5V. This is a sealed, high-sensitivity DC relay, which consists of a single-pole double-throw switch and an electromagnetic coil. The rated current is as high as 10A, which is completely higher than the current generated when the main circuit motor is working. Moreover, the stability of the relay is relatively good, and it will not be damaged by overpressure and overcurrent in a short period of time. It can be used continuously for about 10,000 times, which reduces the cycle of replacing the system circuit in later use and reduces possible consumption costs in later use. So using SRD_05VDC_SL_C is very in line with the design requirements. Connect b and e to the main circuit of the electric car. When the remote control terminal is arming the electric car, the relay will be energized to work, and the switch will be turned to the d pin of the relay, so that the main circuit will be disconnected and the electric car cannot be started; and when the system is disarmed , the relay is de-energized, the switch is turned back to pin e, the main circuit is turned on, and the electric vehicle can be started.

The alarm circuit includes a high-frequency buzzer, a crystal transistor and a resistor. After pressing the arming button, when the battery protection circuit and the alarm test are performed, P1.7 outputs a low level, and the transistor is turned on, so that the buzzer forms a The closed circuit, the buzzer sends out an alarm sound, and the work of the alarm circuit is controlled by the P1.1 port of the single-chip microcomputer.

The alarm circuit is an important part of the vehicle system, and it is a form of anti-theft of the entire system. The alarm circuit consists of a high-frequency buzzer and a 9012 crystal triode. The positive pole of the buzzer is connected to the emitter of the triode, and the negative pole is grounded. The base of the triode is connected to the P1.1 of the single-chip microcomputer through the current limiting resistor. The triode can not only be used as a switch to trigger the alarm, but also amplify the current. After pressing the arming key S1, when the vibration sensing circuit or the battery protection circuit and the alarm test, P1.7 outputs _a low level, and the triode is turned on, so that the buzzer forms a closed loop, and the buzzer sends out an alarm sound. The work of the alarm circuit is controlled by the P1.1 port of the microcontroller.

The system selects single-chip microcomputer AT89S51 as the control center of the anti-theft system, and uses DF wireless data transmission to complete the signal transmission between the remote control and the electric workshop. The vibration sensor SW_18010P is used as the trigger of the vibration sensing circuit of the system. When the external vibration is sensed, the circuit is triggered, the output signal is sent to the single chip microcomputer, the alarm is completed and the signal is fed back to the remote control to trigger the sound and light alarm.

At least the following beneficial effects can be achieved: overcoming the problem that the vibration sensing module of the electric vehicle in the prior art is easily triggered to generate false alarms, effectively avoiding the problem of a single trigger point and preventing the vibration sensor from being damaged by itself, and overcoming the wireless anti-theft design. At the same time, the wireless remote control anti-theft can not synchronize the information of the electric vehicle to the owner. At the same time, set the wireless communication distance between the remote control end and the tram control unit to a relatively short distance, such as 5m-10m. When entering the armed state, if the electric vehicle If the set short communication distance is exceeded, or the communication is interrupted due to external damage and occlusion, the electric car triggers an alarm circuit to send out an alarm signal to remind the electric car that the state is abnormal. It avoids the risk of trams being transferred and stolen, and at the same time avoids the risk of trams being deliberately sabotaged; it makes the entire anti-theft system more reliable, sensitive, and efficient, thereby improving the anti-theft performance of electric vehicles. The solution effectively solves the problem of single triggering in the past , Vehicle anti-theft without key anti-theft, passive anti-theft and single power supply.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. an anti-theft system of electromotor car control method, it is characterised in that comprise the following steps:

A. system initialization；

B. the button that judges whether to deploy troops on garrison duty on remote controller is pressed, if button of deploying troops on garrison duty is pressed, relay obtains electric, main circuit open circuit, System enters state of deploying troops on garrison duty；

C. vibration sensing unit judges whether the external world has vibration, if there being vibration, then vibration sensor is triggered, vibration sensing unit Produce vibrational feedback, feedback signal is passed to warning circuit and triggers clock circuit, simultaneously by feedback signal by wireless number The sound light alarming circuit in remote control is passed to according to transmission means；Warning circuit and sound light alarming circuit start after being triggered to report to the police； If vibration sensing unit judges external friction, then carry out step e；

D. when timing reaches the setting value of clock circuit, stop alarm, return to the state of deploying troops on garrison duty；

E. determining whether that the button of withdrawing a garrison on remote controller is pressed, if any withdrawing a garrison, button is pressed, relay electric-loss, and main circuit is led Logical, return step a.

A kind of anti-theft system of electromotor car control method the most according to claim 1, it is characterised in that step a also includes working as Press the button of deploying troops on garrison duty on remote controller to enter and deploy troops on garrison duty after state, the wireless sending module of remote controller end constantly connecing to control unit Receive module and send wireless signal, when control unit does not receives the wireless signal sent by remote controller end, trigger warning circuit, Report to the police.

Anti-theft system of electromotor car control method the most according to claim 2, it is characterised in that described step b is specifically, work as After pressing antitheft button, high level signal is sent to single-chip microcomputer P1.2 mouth, through single-chip microcomputer by the way of wireless data transmission After process, P1.0 output low level disconnects to relay, relay.

A kind of anti-theft system of electromotor car control method the most according to claim 3, it is characterised in that described step c is concrete For, when vibration sensing unit is triggered, output high level to single chip microcomputer P2.4 mouth, after single-chip microcomputer processes, single-chip microcomputer P1.1 output low level is to warning circuit, and single-chip microcomputer P2.0 output high level is to the wireless transmitter module of onboard system, by wireless Data feedback triggers sound light alarming circuit in remote control.

A kind of anti-theft system of electromotor car control method the most according to claim 4, it is characterised in that described step e, specifically For when remote control is pressed and withdrawn a garrison key, high level signal is input to the P1.3 mouth of single-chip microcomputer by the way of wireless data transmission, After single-chip microcomputer processes, P1.0 output high level signal turns on to relay, relay.

A kind of electric vehicle anti-theft control system the most according to claim 5, it is characterised in that described vibration sensing unit bag Including two vibration induction sensors, operational amplifier, slide rheostat and resistance, said two vibration induction sensor all uses SW-18010P type, maximum operating voltage is 12V, and electric current is 0.2A, and insulation resistance is only 10, and working relative humidity is 80, work temperature Degree is 26 DEG C, can trigger use 500000 ~ 700000 times；Two vibrating sensors are after any one is vibrated triggering, output electricity Pressure changes, and after operational amplifier, after the signal of generation processes with operation amplifier after filtering, passes to single-chip microcomputer, then After single-chip microcomputer processes, send vibration alarming and information is fed back to remote controller end, completing Autonomous Defense and anti-theft prompt.

A kind of electric vehicle anti-theft control system the most according to claim 6, it is characterised in that the setting of described clock circuit Value is 5S.

A kind of anti-theft system of electromotor car control method the most according to claim 7, it is characterised in that wireless data transmission has Body is for using DF wireless data transceiver module, and described DF wireless data transceiver module uses voltage 12V, and tranmitting frequency is 315HZ.

A kind of anti-theft system of electromotor car control method the most according to claim 8, it is characterised in that described relay uses SRD_05VDC_SL_C, arranging running voltage is 5V, and primary winding voltage is DC5V.

A kind of anti-theft system of electromotor car control method the most according to claim 9, it is characterised in that described warning circuit Including high frequency buzzer, crystal triode and resistance, after pressing key of deploying troops on garrison duty, when secondary battery protection circuit and ann test, P1.7 output low level, triode ON, so that buzzer forms a closed-loop path, buzzer sends alarm sound, report The work of alert circuit is controlled by the P1.1 mouth of single-chip microcomputer.