IR Obstacle Avoidance Proximity Sensor Module

An Infrared Obstacle Avoidance IR Sensor Module is a combination of Infrared Transmitting and Receiving Tubes. An IR LED transmitter emits IR light, and the object reflects that light. When the transmitted light waves are reflected back by the object, the receiver tube will receive the reflected IR waves. This obstacle sensor consists of an onboard comparator circuitry that does the further processing of the signal.  The Green LED indicator shows the working status of the sensor. Whereas the obstacle LED illuminates when any obstacle or hindrance is detected. This IR sensor operates at a wavelength of 700 nm to 1400 nm which is near the Infrared region. These infrared lights are not visible by naked eyes but can be seen through a camera. That is the reason why these IR sensors are used in night vision cameras.

An Infrared Obstacle Avoidance IR Sensor Module features a 3 wire interface with Vcc, GND, and an OUTPUT pin on its tail. It works fine with 3.3 to 5V levels. Under the normal condition, the output of the sensor indicates High status. When any hindrance or obstacle is detected, the output digital signal switches to a logic low-level signal. The onboard variable potentiometer helps to fine-adjustment over the range of operation, with the effective distance range in 2cm to 30cm. The sensor has a very good and stable response even in ambient light or in complete darkness.

PIN DESCRIPTION:

• VCC: 3.3 to 5V DC Supply Input
• GND: Ground Input
• OUT: Output that goes low when obstacle detected
• Power LED: Illuminates when the sensor is working
• Obstacle LED: Illuminates when an obstacle detected
• Distance Adjust: Adjust detection distance. CCW decreases distance&CW increases distance.
• IR Emitter: Infrared emitter LED
• IR Receiver: Infrared receiver that receives a signal transmitted by Infrared emitter

APPLICATIONS

• Obstacle avoidance in robots
• Security systems