Automatic alarm unit for highway accidents

Abstract

Disclosed is an automatic alarm unit for highway accidents. Wireless signal receivers are disposed at entries and medians of a highway at certain intervals. Outputs of the wireless signal receivers are connected with an input end of a controller. A wireless signal transmitter is arranged in each vehicle and operates under the same frequency as the wireless signal receivers. Each wireless signal transmitter is provided with a unique address code and constantly transmits an address code signal out, and the transmitting distance is smaller than one half of the distance between the two wireless signal receivers. The controller determines identity and location of each vehicle according to received address code. Alarm signal lamps are disposed on each median of the highway at certain intervals and are connected with an output end of the controller. When one wireless signal receiver receives the address code signal of the vehicle, next controller is informed of starting timing. When the set time is up and the wireless signal receives no address code signal of the vehicle, the controller turns on the alarm signal lamps behind the vehicle to inform following vehicles to slow down and stop. The automatic alarm unit for highway accidents can be used for detecting occurrence of vehicle accidents and the vehicles running at the speed smaller than the safety speed, and timely sends out alarm signals to reduce rear-end collisions of vehicles.

Description

technical field [0001] The invention relates to accident alarm equipment, in particular to a highway accident automatic alarm device installed on a highway. Background technique [0002] After an accident on the expressway, the inability to issue an alarm signal to the vehicles approaching at high speed behind leads to continuous rear-end collisions with more vehicles behind, resulting in greater loss of life and property. How to notify the rear in the shortest time after the accident occurs A moving vehicle allows the driver to quickly decelerate and stop the vehicle, and at the same time, when there is a vehicle in front of a vehicle traveling at a lower speed than a safe speed, the driver in the rear vehicle can know as early as possible before the accident occurs, and take necessary safety measures. Therefore, it is necessary to set up an automatic accident alarm device on the expressway, and it is very important to accurately detect the slow-moving and accidental vehicl...

AI Technical Summary

Problems solved by technology

[0002] After an accident on the expressway, due to the inability to send an alarm signal to the vehicles approaching at high speed in time, more vehicles behind will have rear-end collision accidents, resulting in greater loss of life and property. How to notify the rear in the shortest time after the accident occurs The driving vehicle allows the driver to quickly slow down and stop the vehicle, and at the same time, when there is a vehicle running below the safe speed in front, the driver of the vehicle behind can know as early as possible before the accident occurs and take necessary safety measures. Therefore, it is necessary to set up an automatic accident alarm device on the expressway, and it can accurately detect slow-moving and accident-prone vehicles, and it is very important to provide an alarm signal to the rear-driving vehicles in a timely manner.

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