看门狗设计，也是信号采集系统的一部分，能够设置参数进行控制-Watchdog design, signal acquisition part of the system, the ability to set parameters to control

选用MQ2气体传感器对现场可燃性气体浓度进行检测，采用功能和性价比较高的STC89C52单片机作为中央处理单元，对浓度信号进行采集、数据处理、显示、报警及打开排气装置等工作。-Using mq2 gas sensor for the concentration of flammable gas field were detected by function and high ratio of performance to price STC89C52 microcontroller as the