1、摘 要 摘 要 当今社会上，出现了许多煤气报警器，而这些产品大都是针对煤气的泄漏所做出的相应的报警，即为家庭式。但是随着社会的发展，煤气报警器也在发展。 微机控制技术、传感器在工业控制、机电一体化、智能仪表、通信、家用电器等方面得到了广泛应用，显著提高了各种设备的技术水平和自动化程度。因此对这些原理和结构我们就需要很好的了解并掌握。 煤气报警系统采用了 RCM5700 为系统的 CPU，通过单片机系统设计实现对家用煤气的控制功能，由 NG-CO-001 电化学一氧化碳气体传感器 对煤气进行检测，将所得的浓度值与设定浓度值相 比较得到偏差。通过对偏差信号的处理获得控制信号，去调节煤气出气阀的通断
2、，四个单元的煤气浓度对应模拟量利用 A/D 转换为数字量，并加入了键盘输入， 从而实现对家用煤气漏气的控制。 整个系统的硬件电路设计合理，性能安全可靠。 关键词 ： 电位器采样 ； 报警临界值 ； 煤气浓度 Abstract Abstract In the current society, a lot of coal gas alarms have appeared, and these products are mostly to letting out corresponding alarms made of coal gas , it is family. But with the de
3、velopment of society, coal gas alarm develop too.Microcomputer control technology, sensors in the industrial control, mechatronics, smart instrumentation, communications, household appliances, etc. has been widely applied, significantly improved the technological level of equipment and degree of aut
4、omation. Thus the structure of these principles and we need to understand and grasp the good. Coal gas warning system adopt RCM5700 computer CPU of system,Design a realization through a single slice of machine system to the control function of household-use coal gas. The NG-CO-001 electricity chemis
5、try carbon monoxide air spreads a feeling machine to carry on an examination to the coal gas and compares density value and enactment density value gaining to get deviation,the processing that passes to the deviation signal acquires control signal and regulate coal gas to give vent to anger the of v
6、alve break.four coal gas density corresponding analog quantity of unit utilize A/D person who changes figure into, and has joined key in,carry out the control that leaks air to the household-use coal gas thus.The hardware circuit of the whole system is reasonable in design, performance is safe and reliable. Keywords: Potentiometers sampling； Alarm threshold； Gas concentration
