This project is mainly to solve the mine gas concentration is too high, affecting its safety accident more than the program. At the same time because the underground signal is very weak, when the staff hand-held mobile terminal equipment can not be timely data transmission to the service center. Need to carry out the wireless transmission function to solve. The company's serial port to WIFI equipment can be very good support Andrews system mobile terminal use, and can connect any equipment issued by the wireless signal.
advantage:
1. Data can be transmitted wirelessly in limited space. At the same time can support multi-node data collection work.

2. can be a very good solution to the problem of weak signal. The implementation of the long-distance wireless signal transmission and transmission.

3. Significantly improved security.