工作原理 ：
working principle:
红外感应利用红外线反射率的不同来检测物体。
Infrared sensing uses the difference in infrared reflectivity to detect objects.
雷达感应利用电磁波反射率的不同，通常基于多普勒效应原理。
Radar induction utilizes the different reflectivity of electromagnetic waves, usually based on the principle of Doppler effect.
检测距离 ：
Detection distance:
红外感应的检测距离通常较短，一般不超过几米。
The detection distance of infrared sensing is usually short, generally not exceeding a few meters.
雷达感应的检测距离可以达到数十米甚至上百米。
The detection distance of radar induction can reach tens or even hundreds of meters.
适用场景 ：
Applicable scenarios:
红外感应适用于室内环境，如自动门、照明系统等。
Infrared sensing is suitable for indoor environments such as automatic doors, lighting systems, etc.
雷达感应适用于室外环境，如车辆识别、飞行雷达等。
Radar sensing is suitable for outdoor environments, such as vehicle recognition, flight radar, etc.
感应灵敏度和环境因素 ：
Sensitivity and environmental factors:
雷达感应比红外感应更加灵敏，可以实现全方位感应，并且感应效果不受温度、亮度、湿度和光线波动等环境影响。
Radar sensing is more sensitive than infrared sensing, and can achieve all-round sensing. The sensing effect is not affected by environmental factors such as temperature, brightness, humidity, and light fluctuations.
红外感应容易受到热源光源的干扰，在环境温度接近人体温度时，探测和灵敏度会下降。
Infrared sensing is susceptible to interference from heat and light sources, and its detection and sensitivity will decrease when the ambient temperature approaches human body temperature.
对人体状态的感知 ：
Perception of human body state:
雷达感应可以检测到人体静止和微动状态。
Radar sensing can detect the stationary and micro motion states of the human body.
红外感应通常不能检测到人体的微动，主要通过接收人体发出的红外辐射来触发。
Infrared sensing usually cannot detect micro movements of the human body, and is mainly triggered by receiving infrared radiation emitted by the human body.
其他特性 ：
Other features:
雷达感应可以测量高速物体，对挥杆的测量较精准，适用于长距离探测。
Radar sensing can measure high-speed objects and is more accurate in measuring swings, making it suitable for long-distance detection.
红外感应适用于短距离物体探测，如夜视系统和红外成像系统。
Infrared sensing is suitable for short-range object detection, such as night vision systems and infrared imaging systems.
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