【正文】 s powersaving mechanism, but some devices are brought Shutdown feature, you can spare the time to enter powersaving mode, further reduce power consumption. Figure 4voltage power conversion circuit 4 detection system circuit debugging In determining the system circuit hardware and part of the overall design scheme, the experimental production of circuit boards, to conduct a preliminary circuit debugging. Power is a four NiMH rechargeable batteries thread, after adjustment, each heating road driving circuit voltage can be a maximum output voltage of V, the sensor in the heating of the circumstances, at the same time preserve the collection of data, the current can be controlled In less than 250 mA, SCM circuit about 120 mA, sensor array heating current does not exceed 80 mA, pump out of work below the circuit 50 mA, to meet the design of lowpower goals. Detection System hardware debug circuit after the pletion of procedures through the preparation of SCM and puter applications, in the gas detection system to achieve recognition, and other functions. 5 methane detection system software design Debug circuit through the detection system, requires a bination of recognition software in order to detect gas. This paper in software design study by the SCM system for the work recognition algorithm, in the SCM software and PC software two aspects of the work build, work training, and so the discussion, while the other features of the system Procedures have done that. As C8051 MCU is a plete 8052 core, and MCS51 instruction is fully patible with standard 805 x available pilers for software development. The detection system in the SCM software design, using the Cygnal C51IDE development environment, through the 12 circuit in the JTAG interface for debugging, the detection system based on the needs of different functions, a modular design, procedures will be divided into Several major functional modules, 5 are procedures for the SCM module map. From can be seen in Figure 5, the main program in the SCM system initialization and entered the main menu interface, will be waiting for the operation of the keyboard input. When detected a key input, read out the key and determine the need for the operation and then call the appropriate subroutine modules. The author innovation This paperbased microcontroller design lowpower high sensitivity of the methane detection system using integrated microsensor array array unit from crossresponse signal. Through a different response of the sensor array of gas extraction response characteristics, can be quick and reliable detection of methane gas, in many plex occasions greatly improved ability to distinguish between the detection system. References: [1] division Baoshan. AT89S51 based on the multiparameter gas detector Development. Microputer information, 2021, 71: 190191 [2] Friends of the sand. Intelligent sensor system design and application of [M]. Beijing: Electronics Industry Publishing House, 2021. [3] Liu Changchun, Cui pay. Electrochemical sensors and chips in the laboratory of [J]. Sensor technology, 2021, (7). [4] He Li Ming. SCM application system design [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 1996. 。s PDUSBDI2 Phili