PIR传感器(Passive Infrared Sensor),即被动式 红外传感器 。它因为功耗低，价格低廉，使用简单从而被大量使用在门铃、猫眼、感应开关、小夜灯、安防等消费类产品上。

A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion …

2014年1月28日 · Pyroelectric ("Passive") InfraRed Sensors PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors …

2025年1月22日 · They are often referred to as PIR, "Passive Infrared", "Pyroelectric", or "IR motion" sensors. PIRs are basically made of a pyroelectric sensor (https://adafru.it/aKh) …

2024年9月16日 · Passive Infrared (PIR) motion sensors are sophisticated devices that detect movement by sensing variations in infrared radiation within their detection area. These …

Pyroelectric ("Passive") InfraRed sensors: '''What is a PIR sensor?''' PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the …

2022年6月29日 · Passive infrared (PIR) sensors detect motion by sensing the difference between ambient heat energy in a location, and the heat energy when a moving object has entered into …

2009年7月8日 · A Passive Infrared Sensor is a sensor that detects passive infrared radiation (heat sources) and can be used to build robots capable of detecting heat sources not visible to the …

2012年6月28日 · PIR sensors are most frequently found in motion detector devices aptly called passive infrared detectors (PIDs). The PIR sensor in this case sits on a PCB that interprets …

2018年8月25日 · Passive IR sensors form the basis of motion-based controllers due to their: - Simplistic circuitry. - Low power consumption. - Features that can be easily applied across …