A parking space detection device and method based on an NB-IoT technology

Abstract

The invention discloses a parking space detection device and detection method based on an NB-IoT technology. The device comprises an RFID antenna module used for detecting the electronic tag, an RFIDcard reader module used for adjusting the power of the RFID antenna module so as to control the identification range of the RFID antenna module, identifying the parking space and the vehicle information, a geomagnetic sensor module used for detecting whether a vehicle enters or leaves a parking space or not, a single-chip microcomputer used for storing the data information and controlling the NB-IoT module to perform data transmission, and an NB-IoT module used for sending the data information outputted by the single-chip microcomputer to the cloud platform. According to the invention, the RFID card reader module is matched with the geomagnetic sensor module, so that the vehicle identification rate is improved; by adopting the RFID circularly polarized antenna, the antenna identification range is enlarged, the interference of the metal chassis of the automobile on signal transmission can be effectively overcome, the electronic tag is further effectively detected, meanwhile, the identification range of the antenna is controlled by adjusting the transmitting power of the card reader, and the problem of mutual interference among parking spaces in the parking process is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a parking space detection device and detection method based on NB-IoT technology. Background technique [0002] With the rapid development of my country's social economy, the number of motor vehicles has shown a rapid increase. As of September 2018, the number of motor vehicles in the country reached 322 million, of which the number of cars reached 235 million. The total number of private cars exceeds 184 million. The number of motor vehicle drivers has exceeded 400 million, and China has fully entered the automobile society. [0003] Due to the rapid growth of vehicle ownership, urban traffic congestion areas are gradually spreading from the central urban area, and the problem of "difficult driving and parking" has become a major problem in the process of sustainable urban development. Smart parking is the best way to solve parking difficulties. Through the use ...

AI Technical Summary

Problems solved by technology

However, the application of NB-IoT technology to geomagnetic vehicle detectors still has many defects: the car identification technology needs to be improved, the geomagnetic detector is under the car, and the chassis of the car is made of metal, which seriously interferes with the RFID antenna, and it is difficult to identify the electronic devices on the windows. Tag (RFID card)

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