工作原理 ：
working principle:
紅外感應利用紅外線反射率的不同來檢測物體。
Infrared sensing uses the difference in infrared reflectivity to detect objects.
雷達感應利用電磁波反射率的不同，通常基于多普勒效應原理。
Radar induction utilizes the different reflectivity of electromagnetic waves, usually based on the principle of Doppler effect.
檢測距離 ：
Detection distance:
紅外感應的檢測距離通常較短，一般不超過幾米。
The detection distance of infrared sensing is usually short, generally not exceeding a few meters.
雷達感應的檢測距離可以達到數十米甚至上百米。
The detection distance of radar induction can reach tens or even hundreds of meters.
適用場景 ：
Applicable scenarios:
紅外感應適用于室內環境，如自動門、照明系統等。
Infrared sensing is suitable for indoor environments such as automatic doors, lighting systems, etc.
雷達感應適用于室外環境，如車輛識別、飛行雷達等。
Radar sensing is suitable for outdoor environments, such as vehicle recognition, flight radar, etc.
感應靈敏度和環境因素 ：
Sensitivity and environmental factors:
雷達感應比紅外感應更加靈敏，可以實現全方位感應，并且感應效果不受溫度、亮度、濕度和光線波動等環境影響。
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.
紅外感應容易受到熱源光源的干擾，在環境溫度接近人體溫度時，探測和靈敏度會下降。
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.
對人體狀態的感知 ：
Perception of human body state:
雷達感應可以檢測到人體靜止和微動狀態。
Radar sensing can detect the stationary and micro motion states of the human body.
紅外感應通常不能檢測到人體的微動，主要通過接收人體發出的紅外輻射來觸發。
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:
雷達感應可以測量高速物體，對揮桿的測量較精準，適用于長距離探測。
Radar sensing can measure high-speed objects and is more accurate in measuring swings, making it suitable for long-distance detection.
紅外感應適用于短距離物體探測，如夜視系統和紅外成像系統。
Infrared sensing is suitable for short-range object detection, such as night vision systems and infrared imaging systems.
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