Traffic information detecting system

Abstract

The invention provides a traffic information detecting system, wherein a vehicle detector has similar principle with a magnetic resistance vehicle detector and has better performance than the magnetic resistance vehicle detector; by using giant magneto-impedance variation of a magnetic sensitive material-amorphous wire, the variation of a disturbance geomagnetic field during the passing of a vehicle is detected; a single chip 542 program of an intelligent processing interface board 54 (including an A / D (Analog to Digital) converter 541, a single chip 542 and an RFID (Radio Frequency Identification Device) 543) has a dynamic threshold voltage used for filtering adverse effects of the ambient environment of an amorphous wire probe 532 on the amorphous wire probe 532. Through the vehicle detector and a wireless traffic flow dynamic parameter collecting, storage and receiving system, a traffic flow (including availability, speed, traffic flow, road occupancy, model and the like of the vehicle) can be detected in real time under the situation of wireless communication and can store data in an embedded memory and output the data to external equipment, so that a purpose of directing or improving the traffic is achieved by using a network. According to the invention, the amorphous wire probe 532 manufactured from the magnetic sensitive material has the advantages of low cost, small volume, high response speed, low power consumption and high sensitivity. By using a solar cell 3 to supply power, the usual problem of power consumption is solved; by using a super capacitor and a rechargeable battery 52, the problem of severe environments of rainy weathers as well as sandy and windy weathers is solved; by using a thumbtack structure, the contradict between the burying of the vehicle detector and the pavement protection is solved; and with no fear of rolling of the vehicle, the traffic information detecting system provided by the invention can be used for remote monitoring of traffic conditions, traffic management and traffic statistics and comprises road flow monitoring, vehicle speed monitoring, crossing traffic guidance and vehicle parking management.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a traffic information detection system with low power consumption, little damage to the road surface and no interference from bad weather conditions on the road surface. Combined with high-end software and wireless network technology, the system can be used for remote monitoring of traffic conditions, traffic management and traffic statistics, including helping to form road flow monitoring, vehicle speed monitoring, crossing traffic command and vehicle parking management systems. Background technique: [0002] The traffic information detection system is mainly used in remote monitoring of traffic conditions, traffic management, and traffic statistics. It consists of a vehicle detector and a traffic flow dynamic parameter collection, storage, and processing system. At present, a large number of high-tech technologies such as electromagnetic sensing technology, ultrasonic ...

AI Technical Summary

Problems solved by technology

[0004] 1) The construction is relatively difficult, and the road needs to be closed and the road surface damaged;

[0005] 2) The coil is easily damaged, and the amount of later maintenance is large;

[0006] 3) In order to damage the road surface as little as possible, the coils in the same direction are generally drawn from the same slot. If a coil is damaged, if it is replaced immediately, this group of coils needs to be replaced at the same time. The amount of work is large, and the lane must be closed again

At present, the commonly used method is to wait for all the coils in this group to be damaged before replacing them, so that the damaged coils will affect the user's use of the detector;

[0007] 4) The buried coil will cause great damage to the road, and the coil cannot be replaced at the same position when replacing the coil, and the damaged area of ​​the road will become larger and larger as time goes by

[0010] The speed measurement accuracy of the microwave vehicle detector is low and the cost is high. In addition, parking cannot be detected, so it cannot be used for berth detection

[0011] The speed measurement of the video detector is inaccurate and requires a large amount of data processing and analysis. It is not suitable for high speed, foggy, rainy, snowy and light interference, and has high requirements for the environment.

[0012] The magnetoresistive vehicle detector is used to detect the change of the disturbed geomagnetic field when the vehicle passes by. It is small in size, high in sensitivity and fast in detection speed. However, at present, its power consumption is high, and it needs to be imported from abroad, and the cost is also high.

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