1、 Zigbee sensors collect a variety of parameters passed to the trenches of the gateway, then the gateway by wireless data transmission to the central control computer, analysis and comparison the data by computer, to assess the security situation in the mine.
1. Data Collection Terminal
Terminal equipment is mainly composed of all kinds of sensors, alarm and Zigbee module. The sensor is consist of two part, one is used at environmental monitoring: including gas concentration detected, carbon monoxide concentrations detection, air humidity detector, and
so on; the other is the collection of vital signs for miners: such as pulse, blood pressure, respiratory, body temperature, including pulse sensor, temperature sensor and state sensors, etc.
2. Wireless transmission equipment
Zigbee F8914 connected to the data collection terminal in the mine via RS232/485. F8914 acts as the terminal node, which can receive and send information but not communication between terminal nodes.
3. the topology of F8914—–F8114
F8914 connected to the data collection terminal ( sensor or PLC) via RS232/485,then receive data from data collection terminal, and will send data to F8114(center node) via 2.4G Zigbee network.At last, F8114 sends the data to server via RS232 or GRPS network.
The software analyses the data in the server,and the result will be sent to the terminal(sensor ro PLC),so we can control the terminal (sensor or PLC) via server.
4、Terminal transmission module supports a variety of activation,Such as voice calls, SMS, data, etc.Terminal equipment failure or abnormal,Automatically send text messages warning message to maintenance person
5、Transmission module using a backup center and the center of the main auto-recovery，And supports concurrent multi-center functions（up to five)
6. Remote configuration( convenient control )
7. Real-time remote monitoring, make a timely response to the failure
8. Comprehensive monitoring process to run the job to ensure the basis of accident analysis