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Method and device for early warning of vehicle rear-end accident on expressway

A technology for highways and accidents, applied in anti-collision systems, etc., can solve problems such as lack of early warning, high cost, and insufficient safety of high-voltage circuits

Inactive Publication Date: 2010-06-30
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of this method is very high, and the safety of the high-voltage circuit is insufficient. In addition, if the car accident does not break the guardrail, the device will not have the effect of early warning

Method used

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  • Method and device for early warning of vehicle rear-end accident on expressway
  • Method and device for early warning of vehicle rear-end accident on expressway
  • Method and device for early warning of vehicle rear-end accident on expressway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] Such as Figure 17 As shown, the section below is driven from right to left. Car 2 is about to collide with car 1, and the driver applies emergency braking. At this time, the vehicle-mounted terminal will measure that the instantaneous acceleration of car 2 is opposite to the driving speed and is greater than a certain value or the instantaneous speed is less than a critical value. The GPS coordinates of car 2 are sent to the wireless data communication station on the road in data format 1.

[0126] Car 2 is located within the coordinate range under the jurisdiction of wireless data communication station 1, wireless data communication station 1 receives the data and immediately sends the coordinate information of car 2 in data format 2; if wireless data communication station 1 receives the alarm information for 30 consecutive seconds, Or under the situation of not receiving and eliminating the alarm information, the alarm information disappears suddenly (maybe the vehi...

Embodiment 2

[0130] Such as Figure 18 As shown, car 2 avoids a rear-end collision with car 1 through emergency braking, and at the same time, the vehicle terminal of car 2 sends out an alarm message.

[0131] Next, the car 2 starts to drive normally. When the driving speed exceeds a certain speed value, the terminal of the car 2 will immediately send an alarm cancellation message to the wireless data communication station.

[0132] If the wireless data communication station 1 receives the alarm information, if the wireless data communication station 1 has not received the alarm information before, then ignore the alarm; if the wireless data communication station 1 was sending the alarm information in data format 2 or data format 3 before, Then stop sending alert messages.

Embodiment 3

[0134] Such as Figure 19 Car 1 collided with car 2, and car 3 slowed down in advance after receiving the prompt from the early warning system, successfully avoiding the continuous rear-end collision accident. In the future, the vehicle-mounted terminal of car 3 will turn off the buzzer, and cancel drawing the coordinates of the problem on the electronic map, and at the same time, there will be a voice prompt to cancel the alarm.

[0135] After 30 seconds after the accident, the wireless data communication station 2 received the alarm message in data format 3, immediately forwarded the alarm message 3 times continuously and then stopped. When the wireless data communication station 1 continuously sends the alarm information for more than T time, it will also stop forwarding. This time T can be set by the staff.

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Abstract

The invention provides a method and a device for the early warning of vehicle rear-end accidents on an expressway and relates to a GPS positioning technology, a serial communication technology, a voice multimedia technology, a picture and image processing technology and a wireless data transmission technology. The device comprises a plurality of wireless data communication stations. Each wireless data communication station is formed by a central processing unit, a peripheral circuit, a wireless data module 1 and a wireless data module 2. The wireless data communication stations communicate with a vehicle-mounted terminal through the wireless data module 1 and the wireless data module 2. By adopting the device of the invention, the cost is saved, the insecurity caused by the traditional used high-voltage circuit is avoided, the operation of the device is simple and practical, the extensibility is high, users are only required to operate cell phones, to push down the buttons of the wireless modules and the like, the response speed of the device is rapid and the device is suitable for handling emergency incidents on the expressway.

Description

technical field [0001] The present invention relates to GPS positioning technology, serial communication technology, voice multimedia technology, graphics and image processing technology, wireless data transmission technology, in particular to a method and device for early warning of vehicle rear-end collision accidents on expressways. Background technique [0002] Expressways are fully enclosed, fully interchanged, multi-lane, and high-flow road transportation arteries designed for high-speed driving. The traffic accident rate of foreign highways is only about 1 / 10 of that of ordinary highways, and the accident fatality rate is about 1 / 3 of that of ordinary highways. Due to the late start of expressway construction in our country, coupled with the lack of regular understanding of expressways and the lack of experience in expressway traffic management, the incidence of traffic accidents in my country's current expressways is much higher than that of foreign expressways with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16
Inventor 韩春燕车新帅席少辉白旭
Owner NORTHEASTERN UNIV
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