集成烟雾探测电路的研制

STUDY AND DESIGN OF CMOS SMOKE DETECTOR CIRCUIT

本文报道了研制成功的CMOS集成烟雾探测电路.电路的主要特征是:探测端输入阻抗高,可与电离室直接连接使用;内部设置的探测覆值可通过外电阻调节;探测端两侧的有源保护有效地避免了误触发;电路内部备有驱动器.

This paper presents the principles and main units design of the CMOS smoke detector IC, which we have researched on and fabricated. The IC main features are: the detector input impedance is high, the internally set detector threshold can be regulated via the external resistor, the output guard on each side of the detector input can prevent false triggering, and a piezoelectric horn and a LED driver are provided.