A wireless ground sensing vehicle detection device and method

Abstract

The invention mainly relates to the field of intelligent traffic, and, more specifically, relates to a wireless geomagnetic induction vehicle detection device. The device employs coil induction, wireless transmission, employs a battery for power supply, is small in thickness and size, is directly installed on the surface of a parking space, and does not need to carry out the segmentation of a road surface. Moreover, the device employs the geomagnetism principle for judging the movement of a vehicle: starting the geomagnetic induction judgment when the vehicle moves, thereby achieving the superlow power consumption use of the device, and achieving the super-long standby time. The output end of an induction coil of the device is connected with the input end of an induction controller, and the output end of the induction controller is connected with the input end of a wireless communication module. The output end of a battery is connected with the input end of a power management module, and the output end of the power management module is connected with the induction controller, the induction coil and the input end of the wireless communication module. The induction detection module and a geomagnetic detection module are connected with a single-chip microcomputer.

Description

technical field [0001] The present invention mainly relates to the field of intelligent transportation, and more specifically, relates to a wireless ground sensing vehicle detection device and method. Background technique [0002] In the field of smart parking, especially on-street parking, the detection of vehicle presence is an indispensable part of the entire system. As the problem of parking difficulties continues to intensify, the number of parking spaces increases, and the demand for vehicle detection devices increases. The performance requirements of vehicle detection devices are getting higher and higher. Currently used detection devices include geomagnetic sensors, video cameras, ground sensing detectors, and microwave sensors. Different sensing methods have different advantages and disadvantages. The geomagnetic sensor is small in size, low in power consumption, and convenient for construction, but it is susceptible to environmental interference, especially near ...

AI Technical Summary

Problems solved by technology

Geomagnetic sensor, small size, low power consumption, convenient for construction, but it is susceptible to environmental interference, especially near the subway and high-voltage cables, the interference is particularly serious

The perception of the video camera method is mainly due to its high price, which is easily disturbed by rain and snow, and the influence of the branches and leaves of the plants in front of the camera, which leads to failure. The video pile at a lower distance from the ground is easy to be damaged intentionally or unintentionally, such as by the road surface Sinking, thickening of tree rhizomes will cause the camera position to shift, and the pollution of sticky substances such as chewing gum, mud, chocolate, and sorbet will have a serious impact

Accumulated water will have a serious impact on radar and ultrasonic waves. Ground sensing is a relatively mature solution and has been widely used in intelligent transportation. However, ordinary ground sensing coils are cumbersome to install and have no convenient information transmission capabilities, which limits their use. Use in the parking area

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