Product Principle
Principle of lorawan sensor: Based on the principle that the earth's magnetic field is uniform and stable within a certain range, when a car with iron is parked in a parking space, it will disturb the magnetic field in the corresponding area. The geomagnetic sensor determines whether the parking space is occupied by sensing this magnetic field change.
Principle of Lora communication technology: Lora is a long-distance, low-power wireless communication technology that uses spread spectrum technology to achieve long-distance data transmission under low power consumption conditions. Its communication module communicates with the gateway through the LoRaWAN protocol and transmits data such as the parking space status detected by the geomagnetic sensor to the cloud server.
Working principle of the handheld device: The handheld device has a built-in high-performance processor and memory, which can receive and process data from the lorawan sensor.
Application process
Vehicle entry: When the vehicle enters the parking space, the geomagnetic sensor detects the change in the magnetic field, determines that the parking space is occupied, and transmits the data to the background server through the Lora module.
Handheld device receives data: The background server sends the parking space occupancy information to the manager's handheld device, and the handheld device issues an alarm prompt. The manager uses the handheld device to scan the license plate, enter the vehicle information, and print the entry ticket.
Vehicle exit: When the vehicle leaves the parking space, the lorawan sensor detects the magnetic field change again and uploads the data to the background. The background notifies the handheld device, and the toll collector collects the parking fee according to the prompt of the handheld device. After the order is completed, the parking space status is updated to vacant.
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