PIR motion sensors are widely used in security, smart home and other fields. It has outstanding advantages, but it also has obvious disadvantages.
The PIR motion sensor works passively, by detecting infrared radiation of objects, and does not actively emit signals, which neither interferes with the environment nor is easily interfered with by other equipment. Moreover, its power consumption is extremely low, and it can greatly extend the battery life and reduce the cost of use. Because of its simple structure, low manufacturing cost and friendly price, it is conducive to large-scale promotion. Installation is also very convenient, fixed position on the power can be used, without complex wiring and debugging. It has a wide detection range, usually covering tens of meters or even hundreds of meters, to ensure a large area of space monitoring.Advante is came from China Motion Sensor Speaker manufacturer and offer low price, high quality PIR Motion Sensor Chime to the all over the world.
However, its disadvantages should not be ignored. Environmental factors have a great impact on its performance, high temperature, humidity, and light changes will reduce its sensitivity, resulting in false positives and missed positives. It can only detect moving objects, stationary objects are "blind". The detection range is limited by Angle, there are monitoring blind areas, and the movement of some areas is difficult to detect in time. In addition, strong infrared, electromagnetic wave and other interference sources, will interfere with its normal work, and it can not distinguish the type of moving objects, people and animals may be triggered, easy to cause false positives.
Understanding the advantages and disadvantages of PIR motion sensors can be rationally selected and optimized in practical applications, so that it can better serve different scenarios.
