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Vehicle detection method

A vehicle detection and vehicle technology, applied in the field of vehicle detection, can solve problems such as difficult maintenance, high construction and maintenance costs, and easy damage

Inactive Publication Date: 2011-12-14
迈锐数据(北京)有限公司
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Problems solved by technology

It is easy to be damaged during use, difficult to maintain, and the cost of construction and maintenance is high

Method used

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Embodiment Construction

[0024] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0025] The classification of vehicle detection technology can be divided into three categories: geomagnetic detection, wave frequency detection and video detection. The geomagnetic detector has many advantages such as not being affected by weather and light (compared to video detection), and not affected by occlusion (compared to microwave and radar detection), and has become an ideal solution for traffic information collection.

[0026] In view of the above situation, the present invention selects brand-new detection means to improve detection accuracy and reliability. At the same time, the use of wireless communication greatly reduces the difficulty of construction. The well-designed detector greatly reduces the damage to the road surface and reduces the dependence on the external environment.

[0027] figure 1 It...

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Abstract

The present invention relates to a vehicle detection method, comprising: an access point device sends reference time information to a vehicle detection device; the vehicle detection device receives the reference time information, and performs time synchronization according to the reference time information; the vehicle The detection device detects the electromagnetic field strength information of the vehicle passing the road, judges whether there is a vehicle passing through according to the electromagnetic field strength information, generates vehicle detection information and sends it to the access point device; the access point device receives the vehicle detection information, and sends the vehicle detection information The detection information is sent to the relay device, and the vehicle detection information is processed into traffic data with a stored time value; the relay device checks, filters and analyzes the received vehicle detection information into level value / switch value information Send to signal machine. The vehicle detection method of the invention can realize a convenient vehicle detection device, has good communication effect, fast processing speed, high detection precision and good real-time measurement.

Description

technical field [0001] The invention relates to a vehicle detection method, in particular to a vehicle detection method using geomagnetic effect. Background technique [0002] With the development of the times, traffic problems have become a big problem that plagues cities. If you want to solve traffic problems, you need to collect vehicle information on roads and intersections, such as collecting information on cars passing by. [0003] The existing vehicle information collection methods include electromagnetic sensing, ultrasonic sensing, radar detection, video detection and so on. For example, the toroidal coil type vehicle detection device, when the vehicle passes through the toroidal coil buried under the road surface, the coil magnetic field changes, and the detector calculates the information of the vehicle based on this, and thus obtains the flow rate, speed, time occupancy rate and length of the vehicle And other traffic parameters, and upload to the central contro...

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Application Information

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IPC IPC(8): G08G1/042
Inventor 刘向东何赐文王焱桥张大伟王鑫刘东旭邵帅徐东波程占林葛顺利
Owner 迈锐数据(北京)有限公司
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