Infrared sensor, is an infrared as a medium to complete the measurement function of the sensor, has a fast response time and many other advantages, is now widely used in industry and agriculture, national defense, science and technology and many other fields.
Infrared sensor working principle
1, classification
Infrared sensors are sensors classified according to the principle of a different classification, it can be further categorized according to the different conditions. According to the infrared tube drive can be divided into different levels and pulse type; according to the different detection principles can be divided into photon detector (detection principle based on the photoelectric effect) and thermal detector (detection principle based on the thermal effect); according to the different functions can be divided into radiometer, search and tracking systems, thermal imaging systems, infrared ranging communication systems and hybrid systems of five major categories.
2, structure
1)Target to be measured: according to its infrared radiation characteristics to set up the infrared system.
2) Atmospheric attenuation: infrared radiation to be measured through the atmosphere will be subject to a variety of substances affect the attenuation phenomenon.
3) Optical receiver: Used to receive part of the infrared radiation and transmit it to the infrared sensor; 4) Radiation modulator: Used to receive part of the infrared radiation and transmit it to the infrared sensor.
4) radiation modulator: also known as modulation disk or chopper, used to modulate the infrared radiation into variable form to provide information on the orientation of the object to be measured, and filter out interfering signals.
5) infrared detector: is the core of the infrared system, used to detect infrared radiation.
6) detector cooler: used to give the system cooling to improve efficiency.
7) Signal processing system: amplify the signal, filtering and other processing to extract the required information and effective information will be transmitted to the display device.
8) display device: is the terminal equipment of the infrared system, used for effective information display.
3、Example
Above we also told the infrared sensor according to the different detection principles can be divided into photon detectors and thermal detectors, the following we take the thermal detector as an example to tell the working principle of infrared sensors.
Thermal detector detection principle is based on the thermal effect, when the object to be measured by the radiation will cause the temperature will be caused by the increase in the performance of the object to be measured to affect the performance of the change, and thus can be used to detect the radiation to be measured by the amount of electricity or non-electricity changes.
YET609 Infrared sensor
If infrared alignment is required, the YET 609 is a good choice.
1. Single beam sensor/single beam detector is used for automatic slide doors, coil doors, garage door windows etc.
2. Consists of a transmitter and a receiver, and the integrated amplifier can produce an infrared beam.A narrow infrared beam (I or II) can avoid interruption by external light.
3. Even installed at a low height (20-40cm from the floor), the detecting distance can also be guaranteed (5-15 meters).
4. The beam produced by Elefine provides a self-detecting function for the sliding doors. Once the self-detecting beam is interrupted, the door will stop closing and reverse rapidly to the utmost width. The door will open until the detecting beam is resumed. When the door completely closes, the detecting beam becomes invalid.
So YET fulfills your need for infrared alignment?