Since the PIR detector belongs to a weak signal detection device, some details such as height and sensitivity must be paid attention to during installation. Correct installation of a passive infrared detector, you must master the following aspects of information: First, the performance characteristics of the detector must be understood, and secondly, a reasonable determination of the installation location, and finally must be carefully adjusted. It cannot be said that the detector can be alarmed to indicate that it is installed. How to determine the installation position of a passive infrared detector?
1. According to the instructions to determine the normal installation angle Mounting height is not arbitrary, it will affect the sensitivity of the detector and the effect of preventing pets. Imagine a detector mounted at a height of 2M and a height of 2.5. When the moving object moves from the ground, the frequency of cutting the bright area and the dark area is different.
2. Should not face the glass doors and windows Passive infrared detectors are facing the glass doors and windows, there will be two problems: First, white light interference, obviously PIR has a strong suppression of white light, but after all, is not 100% inhibition. So avoid facing the glass doors and windows, you can avoid strong light interference. The second is to avoid complex environmental disturbances outside doors and windows, such as crowd movements and vehicles.
3. It is not appropriate to have a close relationship with the change of temperature for the passive infrared detectors of cold and hot vents or cold and heat sources. Hot and cold vents and cold and hot sources may cause false alarms. For some low-performance detectors, air convection through windows and doors sometimes causes false alarms.
4. It is not right for the easily swinging object http://. . Com/product/infrared_detector/
Easy-to-sweep objects will make microwave detectors work and therefore may also cause false alarms. Pay attention to the illegal invasion route.
The purpose of installing the detector is enough to prevent criminals from intruding. Before determining the installation location, the main population of the building must be considered. In fact, we have prevented entrances and exits and intercepted illegal intrusions. This has achieved our goal.
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