Door sensor system solutions

The door sensor system consists of: door sensor device, door sensor receiver, transparent transmission equipment, and backend server.

Introduction to door sensor system:

The door sensor device obtains the opening and closing status of the detected door in real time, and sends the status information to the door sensor receiver through the wireless module; the door sensor receiver receives and analyzes the data, and sends the data to the transparent transmission device through USART; the transparent transmission device receives the data , encapsulate it again (add location, time and other information) and upload it to the backend server through the mobile communication network; the backend server receives the frame, analyzes and stores it.

System architecture diagram:

System features:

1. Low power consumption: The product design meets industrial-grade requirements, ultra-low power consumption, and the battery life of the wireless sensor can be up to 2 years;

2. Long communication distance: reliable communication up to 15 meters, with a packet drop rate of less than 5%;

3. Quick response: After the door is opened or closed, the response time of the door sensor receiver is as short as 5 seconds;

4. One receiving end can connect to 6 door magnetic devices at the same time;

5. Support multiple interfaces: serial port and I/0 interface can be provided;

Hardware and software

Introduction to door magnetic device.

The door sensor device mainly consists of the following components: magnet, battery, reed switch, anti-shake circuit, MCU, wireless module.

Introduction to wireless transceiver chips:

nRF24L01 is a single-chip wireless transceiver chip working in the 2.4~2.5GHz world-wide ISM frequency band. The wireless transceiver includes: frequency generator, enhanced SchockBurstTM, mode controller, power amplifier, crystal oscillator, modulator, solution tuner. Output power channel selection and protocol settings can be set through the SPI interface.

Software function

1. Obtain the status of the detected door in real time;
2. Host sensor parameter reading and configuration;
3. When a door is opened, an alarm message will be reported;
4. Detection door monitoring and historical data (alarm) query, as well as report printing functions;

Application of wireless door sensor system in vehicle transportation.

Vehicle transportation door monitoring is an important part of transportation and involves multiple steps. In order to ensure that the container door is not opened during the entire transportation process of products (food, medicine, etc.) from the production enterprise to the receiving unit, and that the products in the compartment container are not changed or stolen. The vehicle-mounted wireless door sensor system provided by our company integrates wireless communication technology, Internet of Things technology, and database technology to conduct real-time monitoring of carriage doors during transportation and logistics, realizing the visualization of doors during logistics and transportation. The process can be monitored and responsibilities are well-documented. can rely on.