Technology PIR motion sensor #sensor #smart #arduino #smarthome #technology
Here's an overview of technology related to PIR (Passive Infrared) motion sensors:
PIR sensors are electronic devices that measure infrared (IR) light radiating from objects in their field of view. They are commonly used for motion detection in security systems, automatic lighting, and various other applications.
Key aspects of PIR motion sensor technology:
1. Sensing Principle: PIR sensors detect the infrared radiation emitted by warm bodies (like humans) as they move in front of the sensor's field of view. This change in infrared energy is what triggers the sensor.
2. Sensor Components: A PIR sensor typically has a pyroelectric sensor, a Fresnel lens, and supporting circuitry. The pyroelectric sensor generates a small electrical charge when exposed to infrared radiation.
3. Detection Range: PIR sensors can detect motion within a range of 5-12 meters, depending on the sensor model and lens design.
4. Detection Angle: The sensing angle of a PIR sensor can range from 90 to 180 degrees, again depending on the specific sensor and lens configuration.
5. Applications: Common uses include security systems, automatic lighting, HVAC control, and other applications where motion detection is required.
6. Smart Home Integration: Many modern PIR sensors integrate with smart home platforms and IoT ecosystems, enabling advanced motion-triggered automations.
7. Sensor Types: There are single-element, dual-element, and multi-element PIR sensors, each with different capabilities in terms of detection area and sensitivity.
8. Advanced Features: Some PIR sensors offer features like temperature compensation, pet immunity, and advanced signal processing for improved reliability.
Let me know if you need any clarification or have additional questions about PIR motion sensor technology!
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