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Anti-interference parking detection method and system based on geomagnetic sensor

A geomagnetic sensor and parking detection technology, which is applied to the traffic control system of road vehicles, the traffic control system, and the direction indicating each open space in the parking lot, can solve the problems of misjudgment of the status of the parking space, improve the judgment accuracy, and enhance the parking detection effect of effect

Active Publication Date: 2021-02-26
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defect that the magnetic field interference generated during the locking and locking process of the parking lock in the prior art can easily lead to misjudgment of the parking space state, the present invention provides an anti-interference parking detection method based on a geomagnetic sensor, and a geomagnetic sensor-based parking detection method. anti-jamming parking detection system

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  • Anti-interference parking detection method and system based on geomagnetic sensor
  • Anti-interference parking detection method and system based on geomagnetic sensor
  • Anti-interference parking detection method and system based on geomagnetic sensor

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Embodiment 1

[0057] Such as figure 1 As shown, it is a flow chart of the anti-interference parking detection method based on the geomagnetic sensor in this embodiment.

[0058] This embodiment proposes an anti-interference parking detection method based on a geomagnetic sensor, comprising the following steps:

[0059] S1: Use a geomagnetic sensor to collect geomagnetic signals and preprocess them.

[0060] In this embodiment, the geomagnetic signal M collected by the geomagnetic sensor s (t) including vehicle magnetic field signal V s (t), geomagnetic background signal G s (t), interference signal N s (t), its expression formula is as follows:

[0061] m s (t)=V s (t)+G s (t)+N s (t)

[0062] Among them, s represents the axis number of the three-axis sensor, that is, s∈{x,y,z}, and t=1,2,...,n, n represents the sampling time point; the geomagnetic background signal G s (t) is the signal generated by the earth's magnetic field, usually a constant value.

[0063] Such as figure...

Embodiment 2

[0101] This embodiment proposes an anti-interference parking detection system based on a geomagnetic sensor, and applies the anti-interference parking detection method based on a geomagnetic sensor proposed in Embodiment 1.

[0102] Such as Figure 8 Shown is a schematic structural diagram of the anti-jamming parking detection system based on the geomagnetic sensor of this embodiment.

[0103] The anti-interference parking detection system based on the geomagnetic sensor in the present embodiment includes a smart parking lock 1, a router 2, a base station 3 and a server 4, wherein the smart parking lock 1 includes a geomagnetic sensor 11, a filtering module 12, a micro control unit 13, The communication module 14, the power supply module 15, the geomagnetic sensor 11, the filter module 12, the micro control unit 13, and the communication module 14 are connected sequentially, and the power supply module 15 is electrically connected with the geomagnetic sensor 11, the filter mod...

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Abstract

The invention relates to the technical field of parking detection, and proposes an anti-jamming intelligent parking lock detection method based on a geomagnetic sensor, comprising the following steps: using a geomagnetic sensor to collect a geomagnetic signal and preprocessing it; and interfering with the preprocessed geomagnetic signal Detecting and filtering, judging whether the geomagnetic signal collected at the current moment is a vehicle signal; judging the status of the parking space based on the geomagnetic signal processed by the interference detection and filtering process according to the state machine mechanism; sent to the server, and then the determination result of the parking space status is sent to the user terminal through the server. The invention also proposes an anti-jamming intelligent parking lock parking detection system based on a geomagnetic sensor applying the above method. The invention can effectively solve the problem that the magnetic field interference generated during the locking and locking process of the parking space lock easily leads to misjudgment of the parking space state, and effectively improves the parking detection accuracy.

Description

technical field [0001] The present invention relates to the technical field of parking detection, and more specifically, to an anti-interference parking detection method and system based on a geomagnetic sensor. Background technique [0002] Among the many traffic problems, the traffic congestion and roadside parking problems in the urban center are particularly prominent, and the method of using resource sharing is a way to alleviate the difficult problem of urban parking. At present, the method applied to intelligent parking space management is based on intelligent parking space locks, APPs and service systems to realize parking space sharing, reservation, and automatic charging. Among them, the intelligent parking space lock monitors the free or occupied status of parking spaces in real time through its built-in geomagnetic sensor , and send the status of the parking space to the user APP for user reference, or send it to the service system to perform billing or settlemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/14
CPCG08G1/144G08G1/145
Inventor 张足生陈嘉明
Owner DONGGUAN UNIV OF TECH