本设计的是基于单片机的瓦斯浓度测量仪，该系统以单片机AT89S52为核心，包含瓦斯浓度采样器、AD转化电路、LED显示器和报警装置等组成。该传感器可以有效的监测井下低浓及高浓瓦斯，试用范围非常广泛。监测到的信息传输到单片机，经单片机处理后发出指令，如果瓦斯超过规定值，该系统可以立即发出报警并自动发出执行指令以降低瓦斯浓度。-The design is based on SCM gas concentration measuring instrument, the system microcontroller AT89S52 as the core sampler containing gas concentration, AD conversion circuits, LED display and alarm devices and other components. The sensor can be effective monitoring of underground low concentration and high concentration of gas, try a very wide range. Transmitting monitored information to the microcontroller, issued a directive after the microcontroller processing, if the gas exceeds the predetermined value, the system can automatically send an alarm and immediately　s instructions to reduce the gas concentration.