Thermopile Stories

Thermopile sensor is often used in non-contact infrared temperature measurement, because any object higher than absolute zero can emit infrared, and the energy radiated by the object increases with the increase of the surface temperature of the object. Based on this relationship, thermopile sensor can measure the energy radiated by the object and accurately measure the surface temperature of the object. https://www.senbasensor.com/products/infrared-thermopile-sensor/

At present, the supply of thermopile sensors has been in short supply due to the sudden epidemic situation. Due to the shortage of stocks in the market, the price has risen again and again, which has formed a tense supply shortage. Although the current thermopile sensor industry, including non-contact temperature measurement and health monitoring sensors, has made considerable and stable development, the sudden outbreak of the epidemic makes the supply capacity of the entire industrial chain to meet the sudden demand face a huge challenge. https://www.senbasensor.com/products/infrared-thermopile-sensor/

Do not place heat generating objects within the detection range of the thermopile sensor, such as heaters, water heaters, televisions, computers, refrigerators and other electrical appliances, unless these electrical appliances are turned off. Heating, water heaters, computers, and refrigerators are turned on and off in the automatic program control state which will cause false alarms. https://www.senbasensor.com/products/infrared-thermopile-sensor/

As long as any object is above absolute zero, it will radiate energy at a certain wavelength, but the radiant energy at low temperature is very weak. In the room temperature, all objects in nature are emission sources of infrared radiation. The only difference is the wavelength of infrared radiation. https://www.senbasensor.com/products/infrared-thermopile-sensor/

Infrared sensor system includes optical system, detection element and conversion circuit optical system. The working principle of the infrared thermopile sensor system is not complicated. The entities of each part of a typical sensor system are: 1. Target to be tested The infrared system can be set according to the infrared radiation characteristics of the target to be measured. 2. Atmospheric attenuation When the infrared radiation of the measuring target passes through the earth's atmosphere, the infrared radiation emitted by the infrared source will attenuate due to the scattering and absorption of gas molecules, various gases and various sol particles. 3. Optical receiver It receives part of the infrared radiation of the target and transmits it to the infrared sensor, which is equivalent to radar antenna, commonly used as objective lens. 4. Radiation modulator The radiant light from the target under test is modulated and changed to provide target azimuth information, and can filter out large-area interference signals. 5. Infrared detector This is the core of the infrared sensor system. It is a sensor that uses the physical effects presented by the interaction between infrared radiation and matter to detect infrared radiation, and in most cases, it is the electrical effects presented by this interaction. Senba Sensing Technology Co.,Ltd., a manufacturer of passive infrared sensor, was founded in 2005, with the focus on producing the top quality photoelectric components, such as digital PIR sensor, Photoresistor and Light Sensor, etc. If you want more information about pir as312, please feel free and contact us. https://www.senbasensor.com/what-is-the-general-composition-of-an-infrared-sensor-system.html

Thermopile is a kind of thermoluminescence infrared sensor, which is a device composed of thermocouple. It has been widely used as a temperature detection device in ear thermometer, radiation thermometer, electric oven, food temperature detection and other fields. So, how does a thermopile sensor work? Let's answer this question. As long as any object is above absolute zero, it will radiate energy at a certain wavelength, but the radiation energy at low temperature is very weak. At room temperature, all objects in nature are the emission source of infrared radiation, but the wavelength of infrared radiation is different. The principle of thermopile temperature sensor is based on Seebeck effect: a closed circuit composed of two conductive materials with different work function. When the temperature at the two contact points is different, the carriers inside the material move towards the lower temperature end due to the decrease of temperature gradient, and the accumulated accumulation will be formed at the end of low temperature, then a thermoelectric potential will be generated in the loop. This structure is called thermocouple, the temperature of the object to be measured can be detected when the voltage change is separated from each other. At present, it has been widely used in the field of forehead temperature gun, ear temperature gun, intelligent home appliances, lamp switch, food temperature detection and so on. We are a professional motion sensor companies, if you want more information about intelligent pir sensor, please feel free and contact us. https://www.senbasensor.com/products/infrared-thermopile-sensor/