一、The working principle of infrared sensor
Based on the principles of different response to infrared reflection, absorption and launch. Infrared sensors usually use infrared launchers and receivers. The transmitter emits infrared rays, and the receiver is used to receive the infrared rays of the reflection of objects. When the surface of the infrared shooting person's target object, infrared rays are absorbed, reflected or transmitted by the characteristics of the surface of the object. Different surface materials on objects will have different reflection rates and absorption rates. Objects with high reflectivity will reflect more infrared rays, and objects that absorb high heights will absorb more infrared rays.
The receiver detects the infrared rays reflected by the target object and convert it into a electrical signal. Proper circuit converts the telegraph signal output from the receiver into a signal or not to the existence of an object. The infrared sensor can adapt to different application scenarios by adjusting parameters such as the range, sensitivity, lag time, and working voltage.
二、The excellent performance of infrared sensing technology is based on the following characteristics
1. Non -contact testing with the detected object does not produce physical contact, which can avoid physical damage to the measured object while ensuring the accuracy of the detection.
2. The detection accuracy high -infrared sensor's characteristic changes and speed changes of the target object can be performed accurately.
3. Cologne has a good response time for infrared sensors, which is suitable for application scenarios with strict real -time requirements.
4. The effects of anti -interference strong infrared sensors are not properly illuminated, smoke, noise and other external factors.
5. Adaptability of strong infrared sensors can be used in combination with other sensors, becoming an important part of the intelligent system.
Infrared sensors are a high -performance, high reliability and multifunctional sensor. It has been widely used in many fields, such as automated control, smart transportation, smart home, security monitoring, etc.
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