Automotive run-off-road pre-alarming system

Abstract

The invention discloses an early warning system when vehicle departs the lane, which comprises the following parts: at least one left side judgment device, at least one right side judgment device and an early warning device, wherein the left or right side judgment device acquires a light quantum function through light quantum sensor at first, which is judged by light quantum variation judgment mode group and eliminates the erroneous judgment through error elimination mode group to output a left side or right side depression bar signal; when the early warning system receives the signal, it outputs a warning order to make the warning device generate an early warning motion. The invention judgment reference changes according to the environment, which reduces the erroneous judgment factor of shadow.

Description

technical field [0001] The invention relates to an early warning system for vehicles departing from a lane. Background technique [0002] like figure 1 , figure 2 As shown, the existing automatic warning system for vehicles running on the road can refer to U.S. Patent No. 4,143,264 "Highway Sideline Detector" (HIGHWAY LINE DETECTOR), and the announcement date is March 6, 1979. Both sides of a car 80 are respectively provided with a light source 81 and a light sensor 82 (the present embodiment only uses the single side of the car 80 as an example). The current is strong), and then use a comparator 83 to compare with a fixed reference voltage 84, and if it exceeds, a warning signal will be issued. [0003] However, the aforementioned devices have the following disadvantages: [0004] 1. The criteria for judging will not change with the outside world. Whether it is sunny, cloudy or cloudy, the voltage signal measured by the light sensor 82 is compared with a fixed referen...

AI Technical Summary

Problems solved by technology

Whether it is sunny, cloudy or cloudy, the voltage signal measured by the light sensor 82 is compared with a fixed reference voltage 84, which is easy to cause misjudgment, especially in brighter or darker environments, reflection The brightness range of the returned light varies greatly, but its judgment standard (referring to the reference voltage 84) cannot be adjusted according to the brightness of the outside world, so the overall accuracy is poor.

[0005] 2. The misjudgment rate caused by shadows is too high

When the shadows of other vehicles on the adjacent lane pass by, the light value read by the light sensor 82 will decrease, and when the shadow leaves, the light value read by the light sensor 82 will suddenly change. High, at this time, it may cause the system to misjudgment, mistakenly think that it is pressed to the sideline 91

Since the probability of being disturbed by the shadow of neighboring cars is extremely high when driving on the road, the misjudgment rate of the entire system is too high

[0006] 3. Lack of proper follow-up

The above-mentioned existing device only sends out a horn or an alarm tone, in case the driver cannot operate or respond immediately (such as sudden fainting, heat stroke, shock, etc.), the vehicle will still continue to deviate until an accident occurs, so the accident cannot be avoided

And after an accident, it is impossible to automatically notify specific personnel (such as the police station, relatives and friends, etc.)

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