PIR Infrared Sensor – wired
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A PIR (Passive Infrared) sensor is an electronic sensor that detects infrared (IR) light radiating from objects in its field of view.
The PIR infrared sensor is commonly used in motion detectors, security alarms, and automatic lighting systems. PIR sensors are “passive” because they don’t emit any energy themselves; they detect changes in infrared radiation emitted by objects, like humans or animals, as they move.
Here’s a more detailed explanation:
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How it works:PIR sensors have two slots made of a special infrared-sensitive material. When a warm object, like a person, moves into the sensor’s field of view, it interrupts the infrared radiation detected by one slot more than the other, causing a “change” that triggers the sensor.
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Applications:
- Security: Detecting intruders in alarm systems.
- Lighting: Automatically turning lights on when someone enters a room or area.
- Energy Management: Optimizing energy consumption by controlling devices based on occupancy.
- Industrial Monitoring: Detecting the movement of machinery or equipment.
- Wildlife Tracking: Monitoring animal movements without direct human observation.
- Security: Detecting intruders in alarm systems.
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Advantages:
- Low power consumption: They require very little energy to operate.
- Cost-effective: They are relatively inexpensive to manufacture and use.
- Easy to integrate: They are simple to incorporate into various systems and devices.
- Privacy protection: They only detect heat signatures and don’t collect detailed visual information.
- Low power consumption: They require very little energy to operate.
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Limitations:
- False triggers: Can be triggered by rapid temperature changes, drafts, or moving objects.
- Not as reliable as active sensors: They may not detect slow-moving or small objects as effectively as active sensors.
- Limited range: They have a limited range of detection compared to other sensor types.
- False triggers: Can be triggered by rapid temperature changes, drafts, or moving objects.
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