Geomagnetic vehicle detector based on NB-IoT technology and detection method thereof

A vehicle detector, geomagnetic detection technology, applied in the field of intelligent transportation, to achieve the effect of convenient installation, ensure accuracy, and enhance battery life

Inactive Publication Date: 2019-03-15
CHENGDU ASIONSYS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is aimed at detecting the state of the parking space, and intelligently detects the state of the parking space of the vehicle without manual participation, without manual maintenance, and can completely realize the monitoring of the parking space of the unmanned parking lot

Method used

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  • Geomagnetic vehicle detector based on NB-IoT technology and detection method thereof

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Experimental program
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Effect test

Embodiment 1

[0054] A geomagnetic vehicle detector based on NB-IoT technology, including a geomagnetic detection module, a radio frequency radar detection module, an MCU control module, an NB-IoT communication module and a power management module,

[0055] Geomagnetic detection module: use the disturbance of the geomagnetic signal by the vehicle when parking to detect the presence of the vehicle on the parking space;

[0056] Radio frequency radar detection module: transmit radio frequency signals and mix them with their reflected echoes, and detect the presence of vehicles in the parking spaces by detecting the mixed signals;

[0057] MCU control module: process the data collected by the geomagnetic detection module and radio frequency radar detection module, make vehicle parking and departure business judgments, and perform data interaction with the remote background server through the NB-IoT module;

[0058] NB-IoT data communication module: use the operator's NB-IoT network to enable d...

Embodiment 2

[0093] For the detection of parking space status, a geomagnetic vehicle detector based on NB-IoT network is designed, and the geomagnetic detection module and radio frequency radar module are used to intelligently detect the status of vehicle parking spaces without manual participation. There is no need for human maintenance after the equipment is installed, and the service life can reach 5 years, which can completely realize the monitoring of parking spaces in unmanned parking lots. Therefore, the present invention has the characteristics of low cost, universality, low power consumption, intelligence, real-time performance, high reliability, and convenient maintenance.

[0094] The present invention is described in further detail below:

[0095] Shell part: adopts IP68 professional grade design, mainly composed of two parts: external installation box and equipment inner box.

[0096] Geomagnetic detection module: Based on MEMS technology, through the continuous collection an...

Embodiment 3

[0138] This embodiment further describes each module involved in the present invention in conjunction with the accompanying drawings, as figure 1 Shown:

[0139] Geomagnetic detection module: It adopts a low-power, digital 3-axis magnetometer, which can measure the magnetic field strength of the location, and communicates with the MCU control module through a standard I2C serial interface, and can measure the magnetic field of the location up to 10 gauss. The setting of the internal register realizes different power consumption and sampling frequency control.

[0140] RF radar detection module: Based on FMCW technology, RF radar emits electromagnetic waves modulated by triangular waves. There is a certain frequency difference between the echo reflected by the object and the transmitted signal. By measuring the frequency difference, the distance information between the target and the radar can be obtained. The difference frequency The signal frequency is low, generally KHz, so...

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Abstract

The invention discloses a geomagnetic vehicle detector based on NB-IoT technology and a detection method thereof. The geomagnetic vehicle detector comprises a geomagnetic detection module, wherein thegeomagnetic detection module is used for carrying out in-situ detection on a vehicle on a parking space by utilizing the disturbance of geomagnetic signals on the vehicle during parking; a radio-frequency radar detection module used for transmitting radio-frequency signals, mixing the radio-frequency signals with reflected echoes of the radio-frequency signals, and detecting the vehicle on the parking space in situ by detecting the mixed signals; an MCU control module used for processing the data acquired by the geomagnetic detection module and the radio-frequency radar detection module, carrying out vehicle parking and departure service judgment, and carrying out data interaction with a remote background server through an NB-IoT module; and an NB-IoT data communication module used for enabling the geomagnetic vehicle detection terminal and the remote server to perform data interaction by utilizing an operator NB-IoT network. According to the invention, the parking space state of thevehicle is intelligently detected aiming at the parking space state detection, so that the parking space monitoring of an unmanned parking lot can is completely achieved.

Description

technical field [0001] The invention relates to a geomagnetic vehicle detector based on NB-IoT technology and a detection method thereof, which is suitable for intelligent detection and information sharing of parking spaces in various parking lots, and belongs to the technical field of intelligent transportation. Background technique [0002] The following "five difficulties" generally exist in the current traditional parking lot. One is the "difficulty in the parking lot". Find out exactly where the car parks still have vacant parking spaces. The second is "difficult parking space": in a huge parking lot, finding a small free parking space will waste a lot of time of the car owner to a great extent. The third is "difficulty charging": manual charging will always lead to long queues, card withdrawal, payment and other problems. A huge waste of time and money. The fourth is "difficult maintenance": traditional large parking lots often employ many guides to guide vehicles d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/02G08G1/042G08G1/14H04L29/08
CPCG08G1/02G08G1/042G08G1/145H04L67/12
Inventor 易强王政于洪志
Owner CHENGDU ASIONSYS IND CO LTD
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