热释电红外传感器用自校正积分放大器的设计  

Design of Self Correction Integrated Amplifier Used in Pyroelectric Infrared Sensor

作　　者：金永镐[1] 金杰[1] 

机构地区：[1]延边大学工学院电子信息工程系,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2011年第1期69-72,共4页Journal of Yanbian University（Natural Science Edition）

摘　　要：提出了一种热释电红外传感器用微功耗、智能型积分放大器的设计方法.这种放大器的放大倍数正比于积分时间的平方,可同时完成对微弱电压的积分方式放大及脉宽调制,具有抗干扰能力强、线路简单等特点,特别适用于输出电压很微弱的热释红外传感器.该放大器结合MK系列单片机,可设计出性能稳定、电路简单、成本低,且具有自动校正能力的热释电红外控制器.A method to design the pyroelectric infrared sensor using low power loss and intelligent integrating amplifier is presented.The magnify multiple of the amplifier is proportional to the square of the integration time and the amplifier can synchronously complete the integral approach amplifier to faint voltage and pulse width modulation.And it has the characteristic of strong anti-jamming capability and simple lines,etc.Therefore especially suitable for the pyroelectric infrared sensor which the output voltage is very weak.A combination of amplifier and MK series single chip obtains the pyroelectric infrared sensor,which has the characteristics of stable performance,simple circuit,low cost,and automatic calibration.

关 键 词：热释红外传感器 积分放大 抗干扰 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]