一氧化碳是一种常见的无色无味有毒气体，不易被人们发现，当人处于CO气体之中是十分危险的，甚至威胁到生命安全。本设计针对空间的 CO 浓度进行测量与报警。采用了探测器、单片机控制电路设计思路，该方案具有反应速度快，检测误差小等优点。选用一种十分稳定的 CO 传感器 MQ7，对空间的一氧化碳浓度进行检测，采用AT89C51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，当一氧化碳的浓度超过允许值时，控制电路进行报警。%Carbon monoxide (CO) is a common colorless, odorless and poisonous gas. It is not easy to be found by people. It’s very dangerous when people are in CO gas environment. It can even threaten the safety of life. This design is to measure the CO concentration of space and alarm. The design idea of detector, single-chip microcomputer control circuit is to be adopted for its advantages of quick reaction speed and small detection error. The author chooses MQ7, a kind of very stable sensor, to make detection of carbon monoxide concentration in space, using AT89C51 single-chip microcomputer as the central processing unit. The author collects data, displays and opens the exhaust device for the concentration signal. When the concentration of carbon monoxide exceeds the allowable value, the control circuit will alarm.
展开▼
