CN202448831U - Backup anti-collision alarming device for automobile - Google Patents

Abstract

The utility model discloses an automobile reversing anti-collision alarm device, which comprises a single-chip microcomputer, an ultrasonic transmitting module, an ultrasonic receiving module, a temperature sensor, a display device, and an alarm, wherein the ultrasonic transmitting module is connected to the output end of the single-chip microcomputer, and the The ultrasonic receiving module is connected to the input end of the single-chip microcomputer, the temperature sensor is connected to the input end of the single-chip microcomputer, and the display device and the alarm are connected to the output end of the single-chip microcomputer. The one-chip computer adopts the AT89S52 one-chip computer of ATMEL Company. Ultrasonic emission module adopts T40-16 ultrasonic probe. The ultrasonic receiving module adopts CX20106A chip. The temperature sensor adopts digital temperature sensor DS18B20. The device uses an ultrasonic device to detect obstacles in the process of reversing, and uses a display and an alarm to remind the driver of the reversing situation in real time. The utility model has the advantages of fast response, high reliability, convenient use and relatively economical.

Description

A car reversing anti-collision alarm device

technical field

The utility model relates to the field of automobile reversing, in particular to an automobile reversing anti-collision alarm device. the

Background technique

With the development of social economy and the improvement of people's living standards, the number of car ownership has increased significantly. This makes roads and parking lots very congested, and the driver's field of vision is very limited, and collisions and towing accidents occur from time to time. the

Existing reversing device mainly is a rearview mirror, and what has is also equipped with an electronic reversing device, which sends a prompt sound of "please pay attention to reversing" when reversing. Because the car has certain factors such as length and width, the driver cannot observe the situation near the rear of the car from the side mirror when reversing, and may accidentally bump into other objects, causing unnecessary losses. Although ultrasonic radar reversing anti-collision devices are also arranged in some existing patents, the difference in the speed of sound in the air under different temperatures is not considered, so that the measurement accuracy is not high. Therefore, it is very necessary to study a car reversing anti-collision alarm device with fast response and high reliability. the

Contents of the invention

Aiming at the defects or deficiencies in the prior art, the purpose of this utility model is to provide a car reversing anti-collision alarm device, which uses an ultrasonic device to detect obstacles in the process of reversing, and uses a display and an alarm to remind the driver in real time In the case of reversing, the utility model has the advantages of quick response, high reliability, convenient use and comparative economy. the

In order to achieve the above object, the utility model adopts the following technical solutions to achieve:

A car reversing anti-collision alarm device is characterized in that it includes a single-chip microcomputer, an ultrasonic transmitting module, an ultrasonic receiving module, a temperature sensor, a display device, and an alarm, wherein the ultrasonic transmitting module is connected to the output end of the single-chip microcomputer, and the The ultrasonic receiving module is connected with the input end of the single-chip microcomputer, the temperature sensor is connected with the input end of the single-chip microcomputer, and the display device and the alarm are connected with the output end of the single-chip microcomputer.

The utility model also includes the following other technical features:

The single-chip microcomputer adopts the AT89S52 single-chip microcomputer of ATMEL company.

The ultrasonic transmitting module adopts a T40-16 ultrasonic probe. the

The ultrasonic receiving module adopts CX20106A chip. the

The temperature sensor adopts digital temperature sensor DS18B20. the

The display device uses a 4-digit digital tube. the

The alarm adopts a voice alarm. the

The utility model can automatically display the distance from the obstacle behind the vehicle, and use voice alarm to remind the driver to pay attention to the obstacle and take measures. Because the temperature sensor is used to correct the distance, the accuracy reaches 0.01m, and the use of voice alarm avoids the tension caused by the commonly used buzzer to the driver. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Fig. 2 is a schematic circuit diagram of an ultrasonic transmitting module connected with a single-chip microcomputer. the

FIG. 3 is a schematic circuit diagram of an ultrasonic receiving module. the

Below in conjunction with accompanying drawing, the utility model is further explained. the

Detailed ways

Referring to Fig. 1, the automobile reversing anti-collision alarm device of the present utility model comprises a single-chip microcomputer, an ultrasonic transmitting module, an ultrasonic receiving module, a temperature sensor, a display device, and an alarm. The ultrasonic transmitting module is connected to the output end of the single-chip microcomputer, the ultrasonic receiving module is connected to the input end of the single-chip microcomputer through a signal amplification circuit, the temperature sensor is connected to the input end of the single-chip microcomputer, and the display device and the alarm are connected to the output end of the single-chip microcomputer. the

The single-chip microcomputer adopts AT89S52 single-chip microcomputer of ATMEL Company, which has low power consumption and high performance. the

Referring to Figure 2, the ultrasonic transmitter module uses a T40-16 ultrasonic probe, and the ultrasonic probe emits a series of 40KHz ultrasonic signals driven by the pulse signal output by the microcontroller. the

Referring to Figure 3, the ultrasonic receiving module adopts the CX20106A chip, which is used to receive and amplify the received signal. This chip has high sensitivity and strong anti-interference ability for receiving ultrasonic waves. the

The temperature sensor adopts digital temperature sensor DS18B20. the

The display device adopts 4 digital tubes. the

The alarm adopts voice alarm. the

The working process of the present utility model is as follows:

When reversing, the ultrasonic transmitting module continuously emits a series of continuous (40KHz) pulses. The ultrasonic wave returns after encountering obstacles. The ultrasonic receiving module receives and processes the reflected waves. The temperature sensor is used to collect atmospheric temperature signals. After processing by the amplification circuit, the temperature signal is sent to the single-chip microcomputer. The single-chip microcomputer calculates the distance to the obstacle according to the time difference of the ultrasonic signal, and corrects the distance by querying the sound speed at the corresponding temperature according to the temperature signal. The distance calculation result of the single-chip microcomputer is displayed to the driver by the LED display device. When the distance between the car and the obstacle is less than the specified distance (0.5m), the single-chip microcomputer controls the voice alarm to prompt the driver to take corresponding measures.

Claims (7)

1. reversing automobile proximity-warning device; It is characterized in that, comprise micro controller system, ultrasonic emitting module, super sonic receiver module, temperature sensor, display equipment, annunciator, wherein; Said ultrasonic emitting module links to each other with said micro controller system mouth; Said super sonic receiver module links to each other with the micro controller system input end, and said temperature sensor links to each other with the micro controller system input end, and said display equipment, annunciator link to each other with the micro controller system mouth.

2. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said micro controller system adopts the AT89S52 micro controller system of atmel corp.

3. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said ultrasonic emitting module adopts the T40-16 ultrasonic probe.

4. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said super sonic receiver module adopts the CX20106A chip.

5. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said temperature sensor adopts digital temperature sensor DS18B20.

6. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said display equipment adopts 4 charactrons.

7. reversing automobile proximity-warning device as claimed in claim 1 is characterized in that, said annunciator adopts phonetic alarm.

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