Pyroelectric infrared sensor is a kind of sensor that can detect the position and temperature of the object by using the thermal radiation of the object. Intelligent air conditioning system through the use of pyroelectric infrared sensors to achieve energy-saving control of the air conditioning system, so that the air conditioning system can more intelligently adjust the operating state of the air conditioning according to the human activity and ambient temperature, so as to save energy.

First, pyroelectric infrared sensors can be used for human activity detection. When the human body enters the detection range of the sensor, the human body will emit a thermal radiation signal, and the sensor can detect the signal and control the switching state of the air conditioner in real time through the controller of the air conditioning system. When someone is detected in the activity, the air conditioning system will automatically start to work, to provide a comfortable temperature environment for the human body; When no one is moving, the air conditioning system automatically shuts down to save energy. This avoids a lot of energy waste caused by the human body leaving but not turning off the air conditioning in time.

Secondly, pyroelectric infrared sensors can also be used for human position detection. By detecting the heat radiation signal of the human body, the sensor can accurately determine the position of the human body. In an intelligent air conditioning system, sensors can be installed in different locations in the room, such as ceilings, walls, etc., to achieve multi-angle detection of the position of the human body. Based on the position information of the human body, the air conditioning system can adjust the air discharge direction of the air conditioner, so that the air discharge direction is more accurately aligned with the position of the human body, thereby improving the cooling or heating effect of the air conditioner and reducing the waste of energy.

In addition, pyroelectric infrared sensors can also be used to detect the amplitude of human activity. The sensor can judge the activity amplitude of the human body according to the detected thermal radiation signal, so as to realize the energy regulation of the air conditioning system. When the range of human activity is large, the air conditioning system can appropriately improve the intensity of cooling or heating to meet the temperature needs brought about by human activity; When the range of human activity is reduced or close to static, the air conditioning system can appropriately reduce the intensity of cooling or heating to save energy. This can adjust the working state of the air conditioning system according to the range of human activity, so as to achieve energy-saving effects.

In addition, the dynamic control of the intelligent air conditioning system can be realized by combining the pyroelectric infrared sensor and the ambient temperature sensor. The pyroelectric infrared sensor can detect the thermal radiation signal of the human body, and the ambient temperature sensor can detect the indoor ambient temperature. When the pyroelectric infrared sensor detects that someone is active, the air conditioning system can determine the intensity of cooling or heating according to the ambient temperature and human activity. When the pyroelectric infrared sensor does not detect human activity, it can decide whether to turn off the air conditioner or take an energy-saving mode according to the ambient temperature to achieve the purpose of energy saving.

In short, the application of pyroelectric infrared sensors in intelligent air conditioning systems can help achieve energy saving regulation. By detecting the thermal radiation signal of the human body, the sensor can monitor the position of the human body in real time, the range of activity and the ambient temperature and other information, so that the air conditioning system can intelligently adjust the operating state of the air conditioning, provide a comfortable temperature environment for the human body at the same time, reduce the waste of energy. Such energy-saving regulation can not only improve the energy efficiency of the air conditioning system, but also more in line with the concept of environmental protection and energy saving.