CN107839593A - Automobile rear car is overtaken other vehicles prompt system - Google Patents

Abstract

A rear car overtaking prompt system, mainly composed of: rear car whistle detection system, audio processing circuit, rear car turn signal detection system, car indicator light signal amplification circuit, rear car overtaking recognition circuit, overtaking voice prompt system, loudspeaker composition. Using the rear vehicle overtaking prompt system proposed by the present invention can ensure that the driver responds to the overtaking whistle sound or overtaking indicator light of the vehicle behind, controls the driving speed of the vehicle in time and avoids changing lanes, so as to ensure that the vehicle behind can overtake safely.

Description

Rear vehicle overtaking warning system

technical field

The invention relates to an automobile safety indicating device, which ensures that the driver of a car can detect the overtaking intention of the rear car in the car when a car coming from behind blows its horn or uses a turn indicator light to prepare for overtaking, so as to reduce the occurrence of accidents.

Background technique

With the improvement of people's living standards, cars are constantly entering the family, and the number of cars is increasing. The roads in some cities are becoming more and more congested, and there are more and more cars on the highway. Due to the continuous improvement of the manufacturing level of modern cars, people The requirements for the mute effect in the car are getting higher and higher, and it is often one-sided to pursue that the driving noise cannot be heard in the car, which makes the car whistle sound that can be heard in the car smaller and smaller. Especially when driving at high speed, due to the high road noise and wind noise, many vehicles are driving with their windows closed, and honking is almost meaningless. Changing lanes due to signal, may cause traffic accidents, and this situation is particularly prominent when music or radio is playing in the car. On the other hand, due to lack of experience, many new drivers are often unable to notice the overtaking indicator light or the overtaking whistle prompt of the rear car, which is likely to cause road traffic accidents, especially when the rear car enters the blind spot of the rearview mirror. Danger. While driving in the city, the staggering situation of pedestrians and vehicles is more complicated, the distance between cars is closer, and the environment is noisy. It is necessary to pay attention to the vehicles and pedestrians in front, and also pay attention to the possibility that the car behind may honk or use the indicator light to overtake. If you cannot detect the car behind accidents are likely to occur. In order to enable the car driver to respond to the overtaking whistle sound of the car behind or to detect the overtaking indicator light, so as to ensure the safety of himself and other cars, the invention proposes an overtaking prompt system for the car behind.

Contents of the invention

The present invention is proposed to solve the problem that the driver cannot promptly respond to the overtaking prompt of the vehicle behind when driving. Using the overtaking prompt system of the vehicle behind the present invention can ensure that the driver responds to the overtaking whistle sound or the overtaking indicator light of the vehicle behind , to control the speed of the vehicle in time and avoid changing lanes, so as to ensure that the vehicles behind can overtake safely.

In order to achieve the above object, the present invention adopts the following technical solutions:

A rear car overtaking prompt system, mainly composed of: rear car whistle detection system, audio processing circuit, rear car turn signal detection system, car indicator light signal amplification circuit, rear car overtaking recognition circuit, overtaking voice prompt system, loudspeaker composition.

The rear car whistle detection system can use one or more whistle sound detection sensors, which are installed at the rear of the car to detect the rear car whistle sound. The car whistle sound is a higher frequency sound source. Therefore, the present invention filters Filter out the background noise of the road and get the car horn sound.

The audio processing circuit amplifies the signal of the whistle sound detection sensor to achieve a certain signal strength.

Rear car turn indicator detection system There are two car indicator detection sensors, which are respectively installed on the left and right sides of the rear of the car to detect the flashing lights of the rear car, and obtain a certain range of electrical signal strength through photoelectric conversion and filtering.

The signal amplifying circuit of the car indicator light has two circuits, which respectively amplify the obtained electrical signals of the left and right circuits to achieve a certain signal strength.

The rear vehicle overtaking recognition circuit analyzes and recognizes the two-way signals of the audio processing circuit and the car indicator signal amplifying circuit to determine the overtaking intention of the car behind, and at the same time detects the strength of the two signals input to the amplifying circuit according to the car indicator signal Determine whether the vehicle behind is preparing to overtake on the left or on the right.

The overtaking voice prompt system outputs the corresponding overtaking voice information of the rear vehicle according to the judgment result of the overtaking identification circuit of the rear vehicle and plays it through the loudspeaker, prompting the driver that the vehicle behind is ready to overtake on the left or right side. In the overtaking voice prompt system, the driver can customize the voice content played, and can also choose to play the overtaking voice prompt information provided by the system.

The interconnection among the various systems in the present invention can be accomplished through wireless means such as bluetooth communication, so as to improve usability.

Compared with the prior art, the present invention has the following advantages:

1. In the existing technology, the driver directly hears the whistle of other cars or learns the intention of the rear car to change lanes and overtake by observing the rearview mirror. It is greatly affected by road noise and driving noise. Although closing the windows can reduce the noise, the Also reduced the chance that the driver listens to the whistle sound of other cars, which is not conducive to safe driving. Some drivers fail to observe the indicator signal of the rear car because of poor technology or negligence, and at the same time, some drivers ignore the rear car that is overtaking due to the blind spot in some rearview mirrors. Recognizing the overtaking intention of the rear car with the indicator signal can ensure that the driver is aware of the overtaking prompt of the rear car, which is conducive to safe driving, especially for new drivers who lack experience.

2. In the present invention, the driver can select the overtaking voice prompt system to broadcast the content of the overtaking prompt information of the following vehicle, which can increase the driving pleasure and is conducive to safe driving.

3. The present invention has strong practicability, convenient operation, reasonable cost, and is convenient for use and popularization.

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

Fig. 1 is a schematic diagram of the circuit principle of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

The embodiment of the present invention is shown in Figure 1, and the present invention comprises rear car whistle detection system, audio processing circuit, rear car turn signal detection system, car indicator signal amplifying circuit, rear car overtaking identification circuit, overtaking voice prompt system, Speaker composition. The rear car whistle detection system can use one or more whistle sound detection sensors, which are installed at the rear of the car to detect the rear car whistle sound. The rear vehicle whistle detection system is connected with the audio processing circuit to amplify the whistle audio signal detected by the sensor to achieve a certain signal amplitude.

Rear car turn indicator detection system There are two car indicator detection sensors, which are respectively installed on the left and right sides of the rear of the car to detect the flashing lights of the rear car, and obtain a certain range of electrical signal strength through photoelectric conversion and filtering. The detection system of the rear car indicator light is connected with the signal amplification circuit of the vehicle indicator light. The signal amplifying circuit of the vehicle indicator light has two circuits, which respectively amplify the obtained two-way electrical signals of the left turn indicator light or the right turn indicator light, so as to achieve a certain signal strength.

Both the audio processing circuit and the car indicator signal amplifying circuit are connected to the rear vehicle overtaking identification circuit. The rear vehicle overtaking identification circuit processes the input audio signal and indicator signal, and judges the rear vehicle according to the detected left turn or right turn indicator. Whether the car is preparing to overtake on the left or on the right, and output corresponding information to the overtaking voice prompt system. The rear vehicle overtaking recognition circuit is connected with the overtaking voice prompt system, and the voice content output by the overtaking voice prompt system is controlled according to the information output by the rear vehicle overtaking recognition circuit. The overtaking voice prompt system is connected with the loudspeaker, and the output voice information is played by the loudspeaker to remind the driver to pay attention to the overtaking of the rear car. The volume of the voice information can be adjusted by the driver.

Claims (7)

1. An automobile rear car overtaking prompt system is characterized in that by the rear car whistle detection system, audio processing circuit, rear car turn signal detection system, car indicator signal amplifying circuit, rear car overtaking recognition circuit, overtaking voice prompt system and speakers. 2. The rear vehicle whistle detection system according to claim 1, characterized in that the vehicle whistle is detected, and when the rear vehicle whistles, the whistle sound detection sensor detects the rear vehicle whistle. 3. The audio processing circuit according to claim 1, wherein the signal of the whistle detection sensor is amplified to achieve a certain signal strength. 4. The rear vehicle turn indicator light detection system according to claim 1, characterized in that the left turn or right turn indicator of the rear car detected by the indicator light detection sensor. 5. The automotive indicator light signal amplifying circuit according to claim 1 has two circuits, which are characterized in that the obtained electrical signals of the left and right circuits are respectively amplified to reach a certain signal strength. 6. The rear vehicle overtaking recognition circuit according to claim 1, characterized in that it analyzes and recognizes the two-way signals of the audio processing circuit and the signal amplifier circuit of the vehicle indicator light to determine the overtaking intention of the vehicle behind, and at the same time according to the signal of the vehicle indicator light The strength of the two-way signals input by the signal detection amplifier circuit determines whether the rear vehicle is preparing to overtake on the left or on the right. 7. The overtaking voice prompt system according to claim 1, characterized in that the overtaking prompt information can be played.