Highway collision detecting system based on wireless sensor network

Abstract

The invention discloses a highway collision detecting system based on a wireless sensor network, which comprises a highway guardrail. The highway collision detecting system is characterized by mainly comprising an acoustical signal detection sensor, a signal processing and central controller, a wireless sensor network device, an electric energy device and a data sending device, wherein the acoustical signal detection sensor is arranged in the highway guardrail and transmits the collected sound transmitted in the highway guardrail into the signal processing and central controller by a wired or wireless way; the bidirectional signal transmission relation is adopted between the signal processing and central controller and the wireless sensor network device, and the electric energy device supplies the electric energy to the signal processing and central controller; and the bidirectional signal transmission relation is adopted between the data sending device and the signal processing and central controller. The highway collision detecting system adopts a principle which can realize the rapid alarming of highway accidents at a lower cost. The invention adopts an acoustical signal extraction and processing technique, greatly reduces the cost of the relevant devices compared with the video way and can transmit the data by the wireless sensor network with less acoustical data quantity and without the need of arranging light rays along the highway in the video way.

Description

technical field [0001] The invention relates to a expressway collision detection system for expressway collision accident reporting and fast processing, in particular to an expressway collision detection system based on a wireless sensor network. Background technique [0002] The rapid handling of expressway accidents has always been a major issue that expressway management agencies try to solve. Accidents on the expressway may cause people to be unconscious and unable to call the police and delay the treatment time; or after an accident occurs at night, personnel cannot determine the specific location of the accident in time, making it difficult for rescuers to reach the rescue location in time, resulting in further deterioration of the accident situation. At present, cameras are installed along the expressway to judge the accident situation; for example, the road monitoring and warning system disclosed in the patent No. ZL200410060264. It is composed of vehicle detection ...

AI Technical Summary

Problems solved by technology

In this way, not only the hardware price is high, but also optical fibers need to be laid along the way, which is inconvenient for construction. Therefore, it is impossible to install cameras densely, and they can only be installed in key areas.

At the same time, the camera consumes a lot of power and needs to use 220V mains power. Due to the safety and cost factors of electricity consumption, it is difficult to collect electricity intensively on highways; even if the video system solves the problem of cost and electricity collection, it is impossible to rely People pay attention to video images all day long, and it is impossible to effectively judge the occurrence of accidents without using complex image recognition technology

Therefore, there is no better technical means for rapid alarm and positioning after the current expressway accident.

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