CN203111160U - Device for preventing automobile from being collided - Google Patents

Abstract

The utility model discloses an automobile collision avoidance device, which includes an ECU attached to the vehicle body, and the device also includes a radar, a camera, a single-chip microcomputer, a braking unit, an LED display and a buzzer, wherein the ECU, the radar and the camera are respectively connected to the single-chip microcomputer The input end of the single chip microcomputer is respectively connected to the brake unit, LED display and buzzer. The utility model utilizes the radar, the camera and the sensor to comprehensively judge the current driving condition of the vehicle, and when the distance between the vehicle and the preceding vehicle is too small, the automatic braking of the vehicle is realized through the braking unit, thereby improving the driving safety. The device has the advantages of simple structure, low cost, convenient installation and maintenance and good practicability.

Description

A car collision avoidance device

technical field

The utility model relates to the technical field of automobile safety, in particular to an automobile collision avoidance device.

Background technique

In recent years, the rapid development of my country's expressway construction has laid a solid foundation for the development of regional economic integration. At the same time, high-speed driving has also caused a series of serious traffic accidents. Automobile rear-end collision is the main form of highway traffic accidents. Investigations show that rear-end collision accidents account for as high as 36% to 40% of the total expressway accidents, and most of them are vicious accidents, which cause the largest economic losses and casualties.

Contents of the invention

The purpose of this utility model is to provide a car collision avoidance device, which can detect the distance to the vehicle in front, and when the distance is too small, activate the brake unit to adjust the distance to the vehicle in front, so as to keep a safe distance between vehicles.

In order to realize above-mentioned technical task, the utility model adopts following technical scheme to realize:

A kind of automobile collision avoidance device, comprises the ECU that vehicle body comes with, and this device also comprises radar, camera, single-chip microcomputer, braking unit, LED display and buzzer, and wherein, ECU, radar and camera are respectively connected the input end of single-chip microcomputer, single-chip microcomputer The output ends are respectively connected to the brake unit, LED display and buzzer.

Other technical characteristics of the utility model:

The radar adopts laser radar.

Described camera adopts MG813 type camera.

Described single-chip microcomputer adopts MSP430 single-chip microcomputer.

The brake unit includes a pressure controller, a motor and a solenoid valve, wherein the pressure controller is connected with the accumulator in the vehicle braking system, the motor is connected with the brake oil pot, and the solenoid valve is connected with the brake master cylinder. The pressure controller described above adopts a pressure relay type pressure controller.

The utility model utilizes the radar, the camera and the sensor to comprehensively judge the current driving condition of the vehicle, and when the distance between the vehicle and the vehicle in front is too small, the automatic braking of the vehicle is realized through the braking unit. Compared with the prior art, the technical effect brought by this device is:

1. In addition to the basic reminder function when the distance between vehicles is small, it can also realize automatic braking through the control of the electronic control unit, which improves driving safety.

2. Simple structure, low cost, easy maintenance and good practicability.

Description of drawings

Fig. 1 is a schematic diagram of the connection relationship of the present invention.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Detailed ways

According to the above-mentioned technical scheme, as shown in Figure 1, the present embodiment provides a kind of automobile collision avoidance device, comprises the ECU that vehicle body carries, and this device also comprises radar, camera, single-chip microcomputer, braking unit, LED display and buzzer , wherein, the ECU, the radar and the camera are respectively connected to the input terminals of the single-chip microcomputer, and the output terminals of the single-chip microcomputer are respectively connected to the braking unit, the LED display and the buzzer.

In this embodiment, the single-chip microcomputer adopts the MSP430 type single-chip microcomputer, and this single-chip microcomputer MSP430 is a 16-bit reduced instruction structure (RISC) ultra-low power consumption single-chip microcomputer produced by the U.S. TI company, and MSP430F436 is used as the core microprocessor chip, and its most important feature is Ultra-low power consumption and stable operation: it can work between 1.8V-3.6V, and the power consumption can be controlled at about 200μA during normal operation, and can achieve ultra-low power consumption of 2μA or even 0.1μA in low power consumption mode. It is mainly composed of 12-bit A/D, comparator, timer, on-chip UART, watchdog, on-chip oscillator, a large number of I/O ports and large-capacity on-chip memory.

The radar adopts laser radar. The long-distance detection ability of microwave radar, the dark penetrating power, the performance when covered by dust and smoke, and the comprehensive indicators of temperature stability are all good. Therefore, a microwave radar with good detection ability and suitable for all-weather operation is the best choice for the vehicle speed and distance measurement system. The role of the radar is to provide the relative speed and distance between the vehicle and the vehicle in front, as the basis for the vehicle to judge whether there is a risk of collision.

The camera adopts the camera MG813 of Volkswagen. The imaging device of this product is CMOS, the viewing angle is 170 degrees, the power consumption is 130-150mA, the working voltage is 12v, and the effective pixels are 628*582 pixels. The camera can present the areas in front of the vehicle and surrounding areas that are difficult for the driver to observe on the LED display as a driving reference for the driver.

The braking unit is connected in the oil circuit between the output of the original vehicle brake master cylinder and the input of the original vehicle ABS. The brake unit includes a pressure controller, a motor and a solenoid valve, wherein the pressure controller is connected with the accumulator in the automobile braking system, the accumulator is connected in parallel with the motor oil circuit, the motor is connected with the brake oil pot, and the electromagnetic The valve is connected with the brake master cylinder, and the pressure controller adopts a pressure relay type pressure controller. The brake fluid is finally transmitted to the ABS system of the original car through the brake unit. The pressure controller in the hydraulic brake unit transmits the pressure information to the single-chip microcomputer according to the expected braking pressure calculated by the ECU, and the single-chip microcomputer issues instructions to control the motor and solenoid valve in the hydraulic unit to realize the braking of the car.

The analog signal obtained by the radar is the distance signal between the vehicle and the obstacle in front; the road condition information obtained by the camera can be displayed in real time through the LED display for the driver's reference; Valve position information and vehicle speed information in order to make a comprehensive judgment on the current vehicle status; the single-chip microcomputer receives signals from radar, camera and ECU and performs calculation, processing and judgment on them, and then outputs execution instructions to the braking unit; when the vehicle is in danger of collision , the single-chip microcomputer controls the buzzer alarm to remind the driver to pay attention, and the brake unit starts to work at the same time, the car realizes automatic braking, so that the distance between the car and the car in front gradually increases, ensuring a safe distance between cars, thus improving the driving safety of the driver .

The electronic components used in the utility model are all known products, and those skilled in the art can know the specific connection mode of the electronic components according to the technical solution of the utility model.

Claims (5)

1. an automobile is avoided crash device, comprise the ECU that vehicle body carries, it is characterized in that, this device also comprises radar, camera, micro controller system, brake unit, light-emitting diode display and buzzer phone, wherein, ECU, radar and camera are connected the input end of micro controller system respectively, and the mouth of micro controller system connects brake unit, light-emitting diode display and buzzer phone respectively.

2. automobile as claimed in claim 1 is avoided crash device, it is characterized in that, described radar adopts laser radar.

3. automobile as claimed in claim 1 is avoided crash device, it is characterized in that, described camera adopts MG813 type camera.

4. automobile as claimed in claim 1 is avoided crash device, it is characterized in that, described micro controller system adopts the MSP430 micro controller system.

5. automobile as claimed in claim 1 is avoided crash device, it is characterized in that, described brake unit comprises pressure controller, motor and electromagnetic valve, wherein pressure controller is connected with energy storage in the brake system of car, motor is connected with the braking oil can, electromagnetic valve is connected with master brake cylinder, and described pressure controller adopts pressure relay formula pressure controller.

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