被动式红外传感器是用来检测对象的存在或占用。
PIR Sensors are used to detect the presence or occupancy of an object.
分析介绍了已有的主动和被动式孤岛检测方法。
Traditional passive and active islanding detection methods are discussed in the paper.
对车辙等变形类路面病害，提出了主动式路面车辙深度检测方法和被动式路面车辙深度检测方法。
For deformation distress in pavement such as rut, active and passive pavement rut depth detecting methods are put forward.
应用被动式视觉传感方法进行CO2焊焊接熔池的形状检测。
The passive visual sensing method was successfully applied to detect the image of weld pool in CO2 welding.
为了避免此类事故，根据红外检测原理研制了被动式红外探测报警系统，以此对矿车里的人体目标进行检测，并作出声、光报警。
In order to avoid such accident, a warning system using passive infrared target detection was developed. It can search body targets in the mine cars and give sound and light warning as well.
被动式运动传感器，也称为PIR(被动式红外线)传感器，通常用于能够检测人体热量的安全灯。
Alternatively passive motion sensors, also known as PIR (passive infrared) sensors are typically used on security lights which detect the heat of a human body.
被动式运动传感器，也称为PIR(被动式红外线)传感器，通常用于能够检测人体热量的安全灯。
Alternatively passive motion sensors, also known as PIR (passive infrared) sensors are typically used on security lights which detect the heat of a human body.
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