IR (Infra red) –Sensors

Infrared sensors have been extensively used in indoor and outdoor applications as they are low cost, easy to use and widely available. Infrared sensors are widely used as a presence trigger, but the analog output of IR sensors.IR sensors depends on several other aspects including the distance of the body from IR sensors, the direction and speed of movement, the body shape and gait. I also used a passive Infra red (PIR) sensors which are sensitive to a persons skin temperature through emitted black body radiation at mind-Infra red wavelength in contrast to background objects at room temperature .No energy is emitted from the sensors, thus the name “ Passive Infra red(PIR)”. The amplitude response of Infra red (IR) sensors depends on the reflectance properties of the target. Therefore in order to use IR sensors for measuring distance accurately.IR sensors can be used additionally to improve the overall vision system.IR sensors show that these sensors are capable to detect any changes in distance measurement and image from the object can be reconstructed.IR sensors also be used to detect brightness. Sensors works by looking for reflected light, it is possible to have a sensor that can return the value of the reflected light.