Method and device capable of shortening feeder of loop vehicle detector

A vehicle detector and toroidal coil technology, applied in the field of intelligent transportation, can solve problems such as the negative impact of the urban environment and road surface damage, and achieve the effects of shortening the construction period, reducing damage and saving construction costs

Inactive Publication Date: 2011-11-23
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

, its installation and maintenance will cause damage to the road surface, which will have a non-negligible negative impact on the urban environment

Method used

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  • Method and device capable of shortening feeder of loop vehicle detector
  • Method and device capable of shortening feeder of loop vehicle detector
  • Method and device capable of shortening feeder of loop vehicle detector

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Embodiment Construction

[0077] Specific embodiments of the present invention will be described below with reference to the drawings.

[0078] refer to Figure 5 , the main short-distance wireless communication module is placed in the road traffic signal control machine, and the two are connected to each other; an auxiliary short-distance wireless communication module and a ring coil signal detection module connected to it are placed beside the road in all directions corresponding to the intersection device. The loop coil signal detector is connected with all the loop coils on the road in this direction with a feeder.

[0079] The effective communication distance of the auxiliary short-distance wireless communication module and the main short-distance wireless communication module is 0-200 meters, the time required for round-trip communication is not higher than 125 milliseconds, and the working frequency is within the free frequency band stipulated by the state.

[0080] The method in this example ...

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Abstract

The invention discloses a method and a device capable of shortening a feeder of a loop vehicle detector. The method is characterized in that a loop signal detector is placed beside a road in which a loop is located, the input end of the loop signal detector is connected with the loop by a short feeder, and the output end of the loop signal detector is connected with an auxiliary short-range wireless communication module, wherein the loop signal detector and the output end of the auxiliary short-range wireless communication module are located at the same position; the detector inputs digital information of detecting road vehicles by the loop, then outputs the digital information to the auxiliary short-range wireless communication module; and the auxiliary short-range wireless communication module sends the digital information to a primary short-range wireless communication module on a road traffic signal controlling machine. The device disclosed by the invention comprises a loop signal detector, an auxiliary short-range wireless communication module, a primary short-range wireless communication module and a feeder. The feeder disclosed by the invention is usually several meters in length; the device is simple in installation and maintenance and low in cost; and by using the device disclosed by the invention, the damage on urban road systems and urban environment caused by feeder embedding is reduced to the largest degree, the construction cost is saved, and the construction period is shortened, therefore, the device is applicable to various urban road environments.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method and a device for shortening the feeder between a loop coil and a road traffic signal controller by using wireless communication technology. Background technique [0002] With the increase of the number of urban vehicles in modern society, the coordination of the relationship between people, vehicles and roads has become an important issue faced by traffic management departments. Maximizing the utilization rate of urban roads has become the main content of urban road traffic control. Urban road traffic control is inseparable from real-time collection of traffic information. The toroidal coil vehicle detector uses the induction coil to detect the speed of the vehicle, and can obtain data such as traffic flow, occupancy rate, and speed of the currently monitored road surface, and is widely used. [0003] Although the loop coil vehicle detector has mature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/042G08G1/065G08G1/08
Inventor 衡伟刘伟孙兵兵王雪萌
Owner SOUTHEAST UNIV
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