Infrared proximity sensor
An infrared obstacle and proximity detection module works by using infrared emitting diodes (IR LEDs) to emit infrared beams and infrared photodiodes to detect the reflection of these beams. Here are some common features and uses of this module:
1. Operating principle: The module emits infrared rays and measures the amount of infrared light reflected by obstacles. When an object is within the detection range, the amount of reflected light changes, which is detected by the module.
2. 5V power supply: This module typically operates on a 5V power supply, making it compatible with many development boards and microcontrollers, including Arduino, Raspberry Pi, etc.
3. Output interface: It usually has a digital output interface that provides a high or low logic signal depending on the presence or absence of detected obstacles. Some modules may also have an analog output for more accurate distance measurement.
4. Sensitivity adjustment: Some infrared modules allow the detection sensitivity to be adjusted using built-in potentiometers, allowing the detection range to be adapted to the specific needs of the application.
5. Common uses: These modules are widely used in obstacle detection systems for robots, security alarm systems, contactless switches, people counting systems, automatic lighting systems, and many other applications.
6. Detection distance: The detection distance depends on the type of module and can vary depending on factors such as the power of the IR emitter, the sensitivity of the IR receiver, and the reflective properties of the detected object.
In summary, an infrared obstacle and proximity detection module is a useful tool for detecting the presence of obstacles in a given area, offering a simple and economical solution for a variety of detection applications.