CN202528941U - Automobile rear end collision prevention system - Google Patents

Abstract

The utility model relates to an automobile rear-end collision prevention system, which is composed of four parts: a vehicle speed detection unit, a vehicle distance detection unit, a signal sending, receiving and comparing unit and a prompting unit. The working process of the whole system is as follows: through the vehicle speed detection unit and the vehicle distance detection unit, the relevant information of the current vehicle is obtained, and the 2262 integrated circuit sends out the electrical signal, and the 2272 integrated circuit in the signal receiving and comparing unit receives the information. signal, and send it to the single-chip microcomputer, and use the data processing program stored in it for data processing. If the safe braking distance corresponding to the current vehicle speed is less than the current distance from the vehicle in front, the output terminal of the single-chip microcomputer controls the prompt unit to work, and the LED prompt lamp 6 and the voice IC chip 7 turn the safe distance information into an acousto-optic signal in the cab , prompting the driver to pay attention.

Description

A car anti-rear collision system

technical field

The utility model relates to an automobile rear-end collision prevention system, which is used for real-time monitoring of the vehicle distance between the preceding vehicle and the own vehicle during the driving process of the automobile. Belongs to the automotive field.

Background technique

With the development of highways and the continuous improvement of automobile performance, the driving speed of automobiles is getting faster and faster, especially the rapid increase of car ownership, traffic is becoming more and more congested, and accidents are more frequent, so the safety of automobiles has become particularly important . When the distance between the vehicle in front and the vehicle is less than the braking distance at the current speed, there is a potential danger of a rear-end collision, especially on highways and other fast-speed driving occasions. itself poses a great security risk. And at present, still do not have a simple and easy automobile anti-rear-collision system on the market, still be in a blank state in this field. Previous anti-rear-collision systems of automobiles only included light alarm devices, which is not conducive to the driver's correct judgment on the running conditions of the vehicle, especially whether the distance between the vehicle in front and the vehicle in front is within the safe braking range.

Contents of the invention

The utility model provides an automobile rear-end collision prevention system with simple device, reliability, stability and low cost.

For realizing above object, the technical scheme that the utility model takes is:

An automobile rear-end collision prevention system is composed of four parts: a vehicle speed detection unit, a vehicle distance detection unit, a signal sending, receiving and comparing unit, and a prompting unit. The vehicle speed detection unit is fixed on the outside of the vehicle hub, and the current vehicle speed is calculated by detecting the rotation speed of the wheel. The vehicle distance detection unit is fixed on the front anti-collision beam of the car and adopts a laser distance measuring sensor. The above two units respectively contain a wireless signal sending device, and the signal receiving device and comparison device are placed inside the cab. The data collected by the sensor is transmitted to the comparison device through the wireless transmitting and receiving module for internal processing, and the result is output to the prompt unit placed inside the cab.

The utility model obtains the relevant information when the current vehicle is running through the vehicle speed detection unit fixed on the outside of the automobile wheel hub and the vehicle distance detection unit fixed on the front anti-collision beam of the automobile, and connects the output terminals of the above two units with the integrated circuit of the signal transmitting device 2262 The input terminal is connected, the 2262 integrated circuit is connected with the input terminal of the 2272 integrated circuit through wireless transmission, the output terminal of the 2272 integrated circuit is connected to the data input terminal of the single-chip microcomputer in the comparison device, and the data processing program stored in it is used. Signal processing is carried out, and the output end of the single-chip microcomputer is connected with the input of the prompting unit. If the safe braking distance corresponding to the current vehicle speed is less than the current distance from the vehicle in front, the prompt unit uses LED and audio IC chip to convert the safe distance information into an audible and visual signal in the cab, so as to achieve the purpose of prompting the driver.

The beneficial effect of the utility model is that the structure of the device is simple and compact, the production cost is low, the circuit is simple, the operation is reliable, and it is self-contained, and it is convenient to interface with automobiles, which is easy to popularize and has a broad market prospect. The innovation point of the utility model is to turn the invisible abstract safe vehicle distance information into an electric signal and turn it into an acousto-optic signal in the cab through the signal transmitting and receiving device, so as to achieve the purpose of prompting the driver and effectively Reduce the occurrence of accidents and ensure the normal and good operation of vehicles.

Description of drawings

Fig. 1 is the flow chart of the procedure of data processing of the present utility model.

Fig. 2 is the schematic circuit diagram of the utility model. In the figure, 1. Distance measuring sensor, 2. Vehicle speed sensor, 3. 2262 integrated circuit, 4. 2272 integrated circuit, 5. Single-chip microcomputer, 6. LED indicator light, 7. Voice IC chip.

Detailed ways

The utility model relates to an automobile rear-end collision prevention system, which is composed of four parts: a vehicle speed detection unit, a vehicle distance detection unit, a signal sending, receiving and comparing unit and a prompting unit.

The vehicle speed detection unit mainly includes a vehicle speed sensor 1 and corresponding peripheral circuits, which are fixed on the outside of the automobile hub. The vehicle distance detection unit mainly includes a distance measuring sensor 2 and corresponding peripheral circuits, which are fixed on the front anti-collision beam of the automobile. The signal sending, receiving and comparison unit mainly includes 2262 integrated circuit 3, 2272 integrated circuit 4, and single-chip microcomputer 5, wherein the transmitting device 2262 integrated circuit 3 is respectively placed at the output end of the vehicle speed detection unit and the vehicle distance detection unit, and the receiving device 2272 integrated circuit 4. The single-chip microcomputer 5 is placed in the cab. The reminder unit is placed in a prominent position in the cab of the car, and the driver is reminded to pay attention through sound and light alarms.

As shown in Figures 1 and 2, during specific implementation, the vehicle speed sensor 1 of the vehicle speed detection unit and the distance sensor 2 of the vehicle distance detection unit are used to obtain relevant information when the current vehicle is running, that is, the speed signal and the distance signal are converted into electrical signals U1 and U2 are transmitted by the 2262 integrated circuit 3, received by the 2272 integrated circuit 4, sent to the single-chip microcomputer and processed by the data processing program stored inside it. If the safe braking distance corresponding to the current vehicle speed is less than the current distance from the vehicle in front, the output terminal of the single-chip microcomputer controls the prompt unit to work, and the LED prompt lamp 6 and the voice IC chip 7 turn the safe distance information into an acousto-optic signal in the cab , prompting the driver to pay attention.

Claims (2)

1. automobile anti-rear end collision system; It is characterized in that: form by speed of a motor vehicle detecting unit, spacing detecting unit, signal transmission, reception and comparing unit and Tip element four parts; Speed of a motor vehicle detecting unit is fixed on the automotive hub outside; Revolution speed calculating through detecting wheel obtains current vehicle speed, and the spacing detecting unit is fixed on the front anticollision beam of automobile, adopts laser range sensor; Said two units contains the signal wireless sending set respectively; Signal receiving device and comparison device are placed on operator's compartment inside, through sensor acquisition to data reach comparison device through wireless transmission, receiver module and carry out inter-process, the result is exported to is placed on operator's compartment in-to-in Tip element.

2. automobile anti-rear end collision according to claim 1 system; It is characterized in that: the mouth of speed of a motor vehicle detecting unit, spacing detecting unit is connected with the input end of sender unit 2262 IC (3); 2262 IC (3) are connected through the input end of wireless transmission method with 2272 IC (4); The mouth of 2272 IC (4) is connected to the data input pin of the micro controller system (5) in the comparison device; Utilize the program of the data handing of its internal reservoir to carry out signal conditioning, the micro controller system mouth links to each other with the input of Tip element.

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