CN205819135U - A kind of wireless remote alarms and security systems for automobiles based on machine vision - Google Patents

Abstract

The utility model discloses a wireless remote car anti-theft device based on machine vision, which comprises: a microcontroller system circuit, which is used to run programs; a power supply, whose input end is connected to an external DC power supply, and whose output end provides DC voltage stabilization; wireless remote control The module, which is electrically connected to the microcontroller system circuit, is used to control the external interrupt input of the car door; the pyroelectric infrared sensor, which is electrically connected to the microcontroller system circuit, is used to detect the sensed temperature; the camera, which is electrically connected to The microcontroller system circuit; the GSM module, which is electrically connected to the microcontroller system circuit; and the relay, which is electrically connected to the microcontroller system circuit.

Description

A wireless remote car anti-theft device based on machine vision

technical field

The utility model relates to the field of automobile networking control, in particular to a wireless remote automobile anti-theft device based on machine vision.

Background technique

With the rapid development of the national economy, cars have gradually become more and more important means of transportation in people's lives. However, with the increase in the number of cars and the improvement of their grades, the corresponding problem of car theft has increasingly become a key crime problem in society. At the same time, the existing motor vehicle parking problem in our country also needs to be solved urgently, and the number of parking spaces in the existing parking lot is far from meeting the current demand. It is not uncommon for cars to be parked on the side of the road, day or night, which also increases the risk of car theft.

According to the statistics of the State Economic and Trade Commission, the current technical level of my country's automobile anti-theft system is the international level in the late 1990s. There are only a few domestic manufacturers who have mastered the development and experimental technology of brake anti-theft devices and formed mass production, and the anti-theft devices generally have a small alarm range, can only realize local alarms, cannot realize remote control, and can only achieve simple alarms. Disadvantages such as tracking control cannot be realized. In addition, domestic automobile anti-theft laws and regulations are not sound enough, and the implementation is not strict enough; manufacturers do not pay enough attention to automobile anti-theft, and the capital investment is insufficient. technology needs.

Therefore, the upgrading of my country's automobile anti-theft products is imperative, and automobile anti-theft will surely enter a new period of adjustment and development.

Utility model content

The utility model designs and develops a wireless remote car anti-theft device based on machine vision. The purpose of the utility model is to solve the problems in the prior art that the alarm range is small, only local alarm can be realized and the sensor alarm is not sensitive.

The technical scheme provided by the utility model is:

A wireless remote car anti-theft device based on machine vision, comprising:

Microcontroller system circuit;

A power supply, whose input end is connected to an external DC power supply, and whose output end provides DC voltage stabilization;

A wireless remote control module, which is electrically connected to the microcontroller system circuit;

A pyroelectric infrared sensor, which is electrically connected to the microcontroller system circuit;

a camera, which is electrically connected to said microcontroller system circuit;

GSM module, which is electrically connected to said microcontroller system circuit;

relay, which electrically couples the microcontroller system circuit.

Preferably, the microcontroller system circuit includes an electronic control unit, a crystal oscillator circuit and a reset circuit;

Wherein, the output terminals of the crystal oscillator circuit and the reset circuit are respectively connected to the input terminals of the electronic control unit.

Preferably, the power supply includes:

5V regulator chip, the input end of which is connected to an external DC power supply, and the output end provides 5V voltage; and

3.3V regulator chip, its input terminal is connected to 5V voltage, and its output terminal provides 3.3V voltage.

Preferably, the wireless remote control module, the pyroelectric human body sensing module, the camera, the GSM module and the relay are respectively electrically connected to the electronic control unit.

Preferably, the GSM module adopts a wireless communication module, which is physically cross-connected with the electronic control unit through a serial port.

Preferably, the relay is connected to the microcontroller system circuit through a triode.

Compared with the prior art, the utility model has the beneficial effects:

1. The utility model uses wireless remote control to start and cancel the anti-theft monitoring. When the wireless remote control locks the car door, the anti-theft system detection is started at this time, and when the wireless remote control opens the car door, the anti-theft system detection is canceled at this time, which can distinguish the car owner from the car thief. , and then make the utility model have high intelligence;

2. The utility model uses a pyroelectric infrared sensing module to detect whether someone enters the activity range. The detection sensor is reliable and sensitive, which improves the reliability and stability of the system;

3. Using the GSM communication network to transmit the photos of car thieves to the owner's mobile phone, breaking through the limitations of regions and distances, and making substantial progress with traditional car anti-theft systems, making the utility model have the characteristics of wireless remoteness;

4. The equipment of the utility model adopts an embedded design, which can be installed in any small space of the car cab in a small volume, so that the layout of the utility model is reasonable and easy to install.

Description of drawings

Fig. 1 is the general design block diagram of the present utility model.

Fig. 2 is a block diagram of the hardware structure of the utility model.

Fig. 3 is the schematic diagram of the minimum system circuit of the microcontroller.

Figure 4 is a schematic diagram of the power supply circuit.

Figure 5 is a schematic diagram of the interface circuit of the wireless remote control module.

Fig. 6 is a schematic diagram of the interface circuit of the pyroelectric human body induction module.

Figure 7 is a schematic diagram of the camera interface circuit.

Fig. 8 is a schematic diagram of the GSM module interface circuit.

Figure 9 is a schematic diagram of the relay control circuit.

Figure 10 is a block diagram of the system embedded software program flow.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

As shown in Figure 1, the wireless remote control is used to start and cancel the anti-theft monitoring. When the door is locked by the owner, the anti-theft monitoring is started at this time. When someone intrudes into the cab is detected, the anti-theft system immediately starts the camera to take pictures of the scene in the cab and converts the captured on-site pictures into multimedia messages, which are sent to the owner’s mobile phone through the GSM mobile communication network for car theft alarm. The relay module cuts off the circuit, oil circuit, etc., and realizes the on-site protection of the car; the system is not limited by distance and geographical location, and realizes wireless remote anti-theft monitoring; based on machine vision, the photo transmission is completed and the certificate is retained, which greatly improves the car's theft alarm. s efficiency.

As shown in Figure 2, the utility model provides a kind of wireless remote car anti-theft device based on machine vision, and its main structure includes: microcontroller system circuit 110, wireless remote control module 120, pyroelectric infrared sensor 131, camera 140, GSM module 150, relay 160, and power supply 170; wherein, the microcontroller system circuit 110 is used to run the program, the input end of the power supply 170 is connected to an external DC power supply, and the output end provides DC voltage stabilization, and the wireless remote control module 120 is connected to the microcontroller system Circuit 110, used to control the external interrupt input of the car door, pyroelectric infrared sensor 131 electrical connection microcontroller system circuit, used to detect the temperature within the sensing range, camera 140 electrical connection microcontroller system circuit, GSM module 150 electrical connection Microcontroller system circuit, relay 160 electrical connection microcontroller system circuit.

In another embodiment, as shown in FIG. 3, the microcontroller system circuit 110 includes: an electronic control unit (ECU) (U1) adopts an STM32F103RBT6 chip to run a program; a crystal oscillator circuit provides a clock frequency for the normal operation of the ECU The reset circuit is used for the reset of the ECU; the crystal oscillator circuit and the output end of the reset circuit are connected to the input end of the ECU (U1) respectively; 128K FLASH and 20K RAM storage space, its capacitors C39, C42, and crystal oscillator Y2 constitute the MCU crystal oscillator circuit, which provides clock beats for the normal operation of the MCU. Resistor R91 and capacitor C79 constitute the reset circuit of the MCU. The embedded software program is saved in the FLASH of MCU.

In another embodiment, as shown in FIG. 4 , the power supply circuit of the power supply 170 includes: a 5V regulator chip (U2), using AMS1117-5.0, the input terminal is connected to an external DC power supply, and the output terminal provides 5V voltage; The pressure chip (U3) adopts AMS1117-3.3, the input end is connected to 5V voltage, and the output end provides 3.3V voltage; the 5V regulator chip (U2) adopts AMS1117-5.0, the input end is connected to an external DC power supply, and the output end provides 5V voltage; Capacitors C1 and C2 are used for filtering the input power supply, capacitors C3 and C4 are used for 5V power supply filtering; the 3.3V voltage regulator chip (U3) adopts AMS1117-3.3, the input terminal is connected to 5V voltage, and the output terminal provides 3.3V voltage. Capacitor C5 , C6 is used for filtering of 5V power supply, and capacitors C7 and C8 are used for filtering of 3.3V power supply.

In another embodiment, as shown in FIG. 5 , in this implementation, four wires are used to connect the ECU ( U1 ) and the wireless remote control module 120 ( W1 ). Among them, the wireless remote control module 120 pin 1 is connected to the ECU pin (VSS_1), which is used for the common ground of the system; Pin 3 of the module 120 is connected to the pin (PC0) of the ECU for external interrupt input of locking the car door; pin 4 of the wireless remote control module 120 is connected to the pin (PC1) of the ECU for external interrupt input of opening the car door.

Its working principle: When the button of the wireless remote control transmitter locks the car door is clicked, the wireless receiving module receives the signal and generates a jump edge, and the PC0 pin of the ECU physically connected to it triggers a jump interrupt, enters the interrupt service function, and executes in this function Start the function of system arming and monitoring; on the contrary, when you click the button of the wireless remote control transmitter to open the door, the wireless receiving module receives the signal and generates a jump edge, and the PC1 pin of the ECU physically connected to it triggers a jump interrupt and enters the interrupt service function. Execute the function of canceling the system arming monitoring in this function.

In another embodiment, as shown in FIG. 6 , the pyroelectric infrared sensor 131 (L1) can be fully automatic. When a person enters the sensing range, it will output a high level, and when it leaves the sensing range, it will automatically output a low level with a delay. ; In this implementation, 3 wires are used to connect between the ECU (U1) and the pyroelectric infrared sensor 131 (L1); wherein, the pyroelectric infrared sensor 131 is connected to the pin (VDD_1) of the ECU through pin 1. Used to provide power for the pyroelectric infrared sensor 131; the pyroelectric infrared sensor 131 is connected to the pin (PA4) of the ECU by pin 2, and is used for the external interruption input of stolen information; the pyroelectric infrared sensor 131 is connected by pin 3 ECU pin (VSS_1), used for system common ground.

Its working principle: when someone enters the cab of the car, the pyroelectric infrared sensor 131 senses the activity of the person and generates a jump edge, and the PA4 pin of the ECU physically connected with it triggers a jump interrupt and enters the interrupt service function. The alarm function is executed in the function.

In another embodiment, as shown in FIG. 7, in this implementation, the camera 140 (W2) selects a CMOS camera OV7670, which is controlled by the SCCB bus and can output various modes such as whole frame, sub-sampling, and windowing. Resolution 8-bit image data. Eighteen wires are used to connect the ECU (U1) and the camera 140 (W2). Wherein camera 140 connects the pin (VDD_1, VDD_2) of ECU by pin (3V3, RST), is used for providing power supply and reset for camera 140; Camera 140 connects the pin (VSS_1, VSS_1, GND) of ECU by pin (PWDN, GND) VSS_2), used for system common ground; camera 140 is connected to ECU pins (PA7, PA6, PC11, PC8, PC9, PA8) through pins (SIOC, SIOD, VSYNC, HREF, PCLK, XCLK) for frame interruption and line interrupt trigger to control the camera acquisition; the camera 140 is connected to the pins (PC0-PC7) of the ECU through the pins (D0-D7) for image data acquisition and transmission to the ECU.

Its working principle: when the camera 140 collects, when a line of image data is collected, a line interrupt is triggered, and the image data is cached in a two-dimensional array in the line interrupt service program and the array pointer is moved backward; when a pair of image acquisition is completed, Trigger field interruption, at this time a complete pair of photos is collected, and image data is calculated and processed in the field interruption service program, converted into MMS data, waiting to be sent out.

In another embodiment, as shown in Figure 8, GSM module 150 (W3) adopts SIM300 wireless communication module, carries out cross physical connection with ECU through serial port, and GSM module 150 pins (VCC) connect the pin (VDD_1 ), used to supply power to the GSM module 150; the GSM module 150 pin (GND) is connected to the pin (VSS_1) of the ECU for system common ground; the GSM module 150 pin (SIM300_TX) is connected to the pin (PA10) of the ECU, It is used for the GSM module 150 to send data and instructions to the ECU; the pin (SIM300_RX) of the GSM module 150 is connected to the pin (PA9) of the ECU, and is used for the ECU to send data and instructions to the GSM module 150.

Its working principle: After the camera converts the image data into MMS data, start the GSM module, and the GSM module uses the serial communication protocol of 115200bps, no check digit, 1 stop bit, and 8 data bits to transmit data with the ECU, and the ECU passes Pin (PA9) sends AT command to GSM module 150, carries out GSM wireless long-distance transmission MMS, ECU receives the return status information that GSM module 150 sends by pin (PA10), judges whether MMS is sent successfully.

In another embodiment, as shown in Figure 9, the relay 160 (JDQ) is HK4100F-DC5V-SHG, the triode (Q10) is a PNP transistor of model 8550, and the ECU communicates with The base of the triode is connected, and the collector of the triode is connected to the 160 pin (JDQ-4) of the relay to control the closing and opening of the relay.

Its working principle: when PA5 outputs a high level, the transistor Q10 is not conducting, so the relay 160 (JDQ) does not work, so the COM terminal of the relay is connected to the normally closed terminal at this time; when the PA5 outputs a low level, Q10 is conducting at this time, Relay 160 (JDQ) works, turn the COM end of the relay to the normally open end, and connect the relay to the oil circuit and circuit control system of the car for the relay to control the work of the oil circuit and circuit of the car.

As shown in Figure 10, the embedded software program is the car lock arming, human intrusion sensing detection, camera acquisition, MMS wireless remote transmission, relay control execution program; the specific process is as follows:

System clock, initialization of various peripherals;

Determine whether the door is locked by wireless remote control, if the door is locked, the system monitoring is activated; if the door is opened, the system monitoring is turned off;

Determine whether someone has entered the car, if so, start the camera to take a picture, and convert the picture into a multimedia message, and send it to the owner's mobile phone through the GSM module;

The relay operates to control the disconnection of the car circuit and the oil circuit for on-site protection.

The utility model also discloses a working process of a wireless remote car anti-theft device based on machine vision, which includes the following steps:

Step 1. Use the wireless remote control to start and cancel the anti-theft monitoring. When the wireless remote control locks the car door, the anti-theft system detection is activated at this time. When the wireless remote control opens the car door, the anti-theft system detection is canceled at this time, which is a good distinction between the car owner and the car thief. ;

Step 2. Use the pyroelectric infrared sensor to detect in real time whether someone has broken into the car;

Step 3. When it detects that someone has broken into the cab, the system immediately starts the camera to take pictures and converts the pictures into MMS data, and sends the MMS to the owner's mobile phone through the GSM mobile communication network to alarm the car theft, and complete the photo transmission based on machine vision stay certificate;

Step 4. When the car is stolen, cut off the car circuit and oil circuit through the relay module to realize on-site protection of the car.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present utility model, and for those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (6)

1. A wireless remote car anti-theft device based on machine vision, characterized in that, comprising: Microcontroller system circuit; A power supply, whose input end is connected to an external DC power supply, and whose output end provides DC voltage stabilization; A wireless remote control module, which is electrically connected to the microcontroller system circuit; A pyroelectric infrared sensor, which is electrically connected to the microcontroller system circuit; a camera, which is electrically connected to said microcontroller system circuit; GSM module, which is electrically connected to said microcontroller system circuit; relay, which electrically couples the microcontroller system circuit. 2. the wireless remote car anti-theft device based on machine vision as claimed in claim 1, is characterized in that, described microcontroller system circuit comprises electronic control unit, crystal oscillator circuit and reset circuit; Wherein, the output terminals of the crystal oscillator circuit and the reset circuit are respectively connected to the input terminals of the electronic control unit. 3. The wireless remote car anti-theft device based on machine vision as claimed in claim 1, wherein said power supply comprises: 5V regulator chip, the input end of which is connected to an external DC power supply, and the output end provides 5V voltage; and 3.3V regulator chip, its input terminal is connected to 5V voltage, and its output terminal provides 3.3V voltage. 4. the wireless remote car anti-theft device based on machine vision as claimed in claim 2, is characterized in that, described wireless remote control module, described pyroelectric body induction module, described camera, described GSM module and described relay Electrically connect the electronic control units respectively. 5. The wireless remote car anti-theft device based on machine vision as claimed in claim 2, wherein the GSM module adopts a wireless communication module, which is physically cross-connected with the electronic control unit through a serial port. 6. The wireless remote car anti-theft device based on machine vision as claimed in claim 2, wherein the relay is connected with the microcontroller system circuit through a triode.