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热释电红外探测传感器,以遥测方式感受移动人体所发出的红外线,并转换成电信号输出,在防盗报警及感应开关等方面用途广泛。本探测器为方便与其它电器配接,使用了继电器作为转换控制器件,通用性强。另外,独特的双脉冲鉴别电路可大大提高抗干扰能力。电路原理电路如附图所示。IC1为热释电传感头,其第②脚输出0.3～10Hz检测电信号,经C2耦合到IC2完成两级73dB放大。放大后的电信号经D1整流、C8滤波
Pyroelectric infrared detection sensor to telemetry mobile infrared emitted by the body, and converted into electrical signal output, the burglar alarm and sensor switch and other purposes. The detector for the convenience of matching with other electrical appliances, the use of the relay as a conversion control device, versatility. In addition, the unique double pulse identification circuit can greatly improve the anti-interference ability. Circuit diagram circuit shown in the figure. IC1 pyroelectric sensor head, the first ② pin output 0.3 ~ 10Hz detection of electrical signals through the C2 coupled to the IC2 to complete two 73dB amplification. The amplified electrical signal through the D1 rectifier, C8 filter