Vehicle rearview mirror blind spot detection system and method

Abstract

The invention discloses a system for detecting a dead zone of a vehicle rearview mirror. The system for detecting the dead zone of the vehicle rearview mirror comprises a plurality of ultrasonic probes generating detection signals and a dead zone detection control unit, the plurality of ultrasonic probes are used for detecting barriers at the dead zone on one side of a vehicle, the plurality of ultrasonic probes are arranged on the vehicle along the forward direction of the vehicle at intervals to enable the dead zone on one side of the vehicle to be covered at least partially by a total detection range of the plurality of ultrasonic probes, and the dead zone detection control unit is used for receiving the detection signals and determining directions of the barriers entering the dead zone according to barrier time sequence detected by at least two of the plurality of ultrasonic probes. The system can reduce false alarm time and simultaneously can give the alarm to vehicles existing at the dead zone of the rearview mirror so as to improve driving safety.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a detection system and method for blind spots of vehicle rearview mirrors. Background technique [0002] Although automobile technology is changing with each passing day, the blind spots of cars always exist, such as the blind spots of vehicle rearview mirrors. Due to the limited field of view of car rearview mirrors, scratching accidents occur due to vehicles not noticing the blind spots during turning or merging. Some even have car accidents. [0003] The Chinese patent document with the patent application number 201120358717.5 discloses a side detection device for vehicles, which detects vehicles in the blind area of ​​the rearview mirror by installing an ultrasonic probe on the rearview mirror outside the vehicle. After the vehicle turn signal is turned on, If it detects that there are other vehicles in the adjacent lane, it will alarm to prevent danger. The side detection device...

AI Technical Summary

Problems solved by technology

The side detection device can solve the problem of early warning of vehicles in the adjacent lane when the vehicle changes lanes. However, since only one ultrasonic probe is installed on one side of the vehicle body, the detection distance is limited, and it cannot completely cover the area that poses a safety hazard to the vehicle.

On the other hand, if the detected vehicle is in the opposite direction to the vehicle, the detected vehicle enters the blind area of ​​the vehicle rearview mirror from the driver's field of view. The alarm of the lateral detection device at this time will form a false alarm, which will reduce the driver's trust in the alarm of the lateral detection device

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