The invention relates to a vehicle detection system based on NB-IoT in combination with geomagnetic guided microwave detection and a working method thereof. The vehicle detection system comprises a digital signal processing and control unit and a power supply unit, a microwave detection unit, a geomagnetic detection unit and a communication unit which are connected with the digital signal processing and control unit. The communication unit is further connected with a system application display unit through an NB-IoT Internet of Things private network. The geomagnetic detection unit detects thechange of a surrounding geomagnetic field; if the geomagnetic change is detected, the digital signal processing and control unit is notified to wake up the microwave detection unit to detect whethera vehicle exists or not through microwaves; and the digital signal processing and control unit determines whether the vehicle enters or exits according to the geomagnetic field variation and the microwave detection result and reports the information about whether the vehicle enters or exits to the system application display unit for display through the communication unit. High-accuracy parking space vehicle detection and display in a low-power-consumption state are realized, the efficiency of parking space management personnel is improved and the labor cost is reduced.
本发明涉及一种基于NB‑IoT结合地磁引导微波探测的车辆检测系统及其工作方法,数字信号处理及控制单元及与其连接的供电单元、微波检测单元、地磁检测单元、通信单元,通信单元还通过NB‑IoT的物联网专网与系统应用展示单元连接;地磁检测单元检测周围地磁场变化,如检测到地磁变化时通知数字信号处理及控制单元唤醒微波检测单元进行微波探测是否有车,数字信号处理及控制单元结合地磁场变化量和微波探测结果确认是否有车进出,并通过通信单元将是否有车进出信息上报到系统应用展示单元进行展示。本发明实现低功耗的状态下高准确率的车位车辆检测并展示,提高车位管理人员效率,降低人工成本。
Vehicle detection system based on NB-IoT combined with geomagnetic guided microwave detection and working method thereof
一种基于NB-IoT结合地磁引导微波探测的车辆检测系统及其工作方法
15.05.2020
Patent
Elektronische Ressource
Chinesisch
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