Research and Design of Methane Gas Inspection Tour System Based on Low-Power SCM MSP430F149

This paper designs a type of methane gas inspection tour and control system based on single chip microprocessor (SCM) technology and wireless communication technology, etc. This system fulfills methane gas concentration collection by LXY-3 methane gas sensor. SCM MSP430F149 analyzes and processes data as central core controller. Wireless transceiver nRF401 realizes data communication between field monitor and inspection tour equipment. And main controller is connected with inspection tour equipment by MAX232 interface. This paper describes system structure, parts of hardware and software design in detail. Experiments show that system monitor error is less than plusmn0.3% to methane gas concentration between 0 and 5%, which performs well to coal mine methane gas concentration monitor and alarm design demand as expected.