Wireless early warning method and device of vehicle traffic accidents

Abstract

The invention belongs to the field of road traffic safety, and relates to a wireless early warning method and device of vehicle traffic accidents. The method can make up the shortages of the existing communication means utilizing infrared rays, ultrasonic wave, laser, common radio and the like. The device comprises a master controller, a car speed detection module, a radio transceiver with the function of adjustable transmitting power and received signal strength indication (RSSI), a car-parking reminding button, a voice and acousto-optic alarming module, and the like. Whether an emergency braking or a traffic accident occurs to a car is judged through real time sampling and monitoring of the speed for the car. An accident signal is sent out through a radio module. A vehicle behind the car receives the accidental signal, gives an alarm by sound and acoustooptics to remind the driver to reduce the speed, thereby reaching the early warning effect in time. The range of accidental early warning can be set and regulated by software. The position of the accidental vehicle can be judged, and the distance can be estimated roughly by utilizing the radio received signal strength indicator (RSSI) function. The vehicle traveling at the railway or in urban area can be distinguished through intelligent monitoring and discrimination of the vehicle traveling speed.

Description

1. Technical field [0001] The invention relates to a vehicle traffic accident early warning method and device belonging to the field of road traffic safety. 2. Background technology [0002] When a car brakes suddenly or a traffic accident occurs, it will change from the original high-speed driving state to zero speed in a very short period of time, and the car behind often hits the vehicle in front because it is too late to brake, thus causing a series of traffic accidents. Many such accidents occur in China every year, especially on highways and roads with blind spots, such as serpentine roads and uphill and downhill roads, which seriously threaten the lives and property safety of the people. [0003] Although there is no visual blind spot for cars driving on the straight road, it is also easy to cause traffic accidents. The main reasons are excessive speed or poor visibility. For example, if the previous vehicle breaks down or brakes suddenly, or stops in the middle of ...

AI Technical Summary

Problems solved by technology

[0005] Ordinary radio communication methods and early warning methods also have disadvantages. It is impossible to judge whether the direction of the accident vehicle is located in the front or rear, and it is impossible to estimate the distance from the location of the accident vehicle. The radio transmission power cannot be adjusted through software settings, and it cannot be distinguished whether it is in an urban area. still driving on the highway

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