Design of Combustible Gas Concentration Detection System

In this paper, using embedded technology, signal processing technology, digital circuit technology and analog circuit technology, and other related technologies, the intelligent and general combustible gas detection system can be designed to detect natural gas, gas, liquefied gas and other combustible gases. The design includes two parts: hardware design and software design. It focuses on the analysis of hardware circuits such as detection, sampling/holding, anti-interference and nonlinear compensation, and introduces the software design of the system. The system design facilitates the expansion of gas detection points and the processing of real-time data. The test results show that the detection precision of the detection system is 0.1% for methane, natural gas and other combustible gases. It has the characteristics of stable detection precision, good linearity, simple circuit and easy to miniaturization.