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Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information

A wireless sensor and technology detection technology, applied in the field of detection using GMR magnetic sensitivity technology, can solve the problems of high system maintenance cost, low measurement speed accuracy, and short coil life

Inactive Publication Date: 2008-08-06
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problems of traditional road traffic flow detection, such as bulky coils, serious damage to the road surface caused by coil laying, short coil life, high system maintenance costs, large environmental impact, poor system stability, and low measurement speed accuracy.

Method used

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  • Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information
  • Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information
  • Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] The wireless sensor network system utilizing GMR magnetosensitive technology to detect vehicle information according to the present invention is composed of a GMR sensor detection terminal 1 (1), a GMR sensor detection terminal 2 (2) and a wireless receiving terminal (3), The GMR sensor detection end machine 1 (1), the GMR sensor detection end machine 2 (2) are connected with the wireless receiving end machine (3). The GMR sensor detection terminal 1 (1) and the GMR sensor detection terminal 2 (2) are identical in physical structure and software algorithm. The GMR sensor detection terminal 1 (1) includes a GMR sensor, a signal processing unit, a single-chip microcomputer and a radio frequency module. The GMR sensor detection terminal 2 (2) also includes a GMR sensor, a signal processing unit, a single-chip microcomputer and a radio frequency mod...

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Abstract

A wireless sensor network system using GMR magnetic sensitive technology to detect vehicle information of the invention consists of two GMR sensor detecting end machines and a wireless receiving end machine. The two GMR sensor detecting end machines are connected with the wireless receiving end machine. The detection method of the invention detects information such as vehicle speed, vehicle length, driving direction, vehicle flow, lane occupancy ratio, etc., according to change data of the surrounding ground magnetic field sensed by the GMR sensor when the vehicles pass. The wireless sensor network system is characterized in having high precision of detecting speed, adaptability to various roads, low cost, convenient maintenance and high anti-interference ability and causing small destroy to road surface, etc.

Description

technical field [0001] The invention relates to the field of road vehicle information detection. It adopts wireless sensor network technology, in particular, it uses two sensor terminal machines and a wireless receiving terminal machine to jointly complete information on vehicle speed, vehicle length, driving direction, traffic flow, and lane occupancy rate. The obtained system is specifically a wireless sensor network system and detection method for detecting vehicle information using GMR magnetic sensitivity technology. technical background [0002] With the development of my country's national economy, the process of urbanization is accelerating, and the number of various vehicles is increasing rapidly, resulting in a tense contradiction between supply and demand of road traffic, which leads to a series of problems such as traffic jams, traffic accidents, transportation efficiency decline, and traffic environment deterioration. These problems have become "bottlenecks" rest...

Claims

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Application Information

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IPC IPC(8): G08G1/042G08G1/052
Inventor 李保海张帆李中一吴波鲍星合赵康周璐巍
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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