A passive infrared motion sensor used to sense motion in front of it. It is used for motion detection.
In other words, a passive infrared motion sensor used to sense motion in front of it.
Description:
This device detects changes in infrared light levels over a wide area, such as movement in a room.
How It Works:
Passive Infrared (PIR) sensors detect heat energy by comparing the signals from a pair of pyroelectric elements. The supporting circuitry then sends a HIGH signal to its signal wire.
Connect It:
There are three pins at the bottom of the device. Power the device by connecting the Power pin to the 5V and Ground to ground. The Signal pin is connected to a device directly, or any digital or analog terminal on an Arduino.
How It Is Used:
Select the device during simulation to show a region with a circle in it. The region represents the space in which the sensor can detect movement. The circle is the target object. Select the target to move it around the region and activate the sensor.
Get Started:
Drag the starter circuit below into your design for a working example of how to use this part.
More About PIR Sensor:
To add a PIR Sensor in Tinkercad, search for "PIR Sensor" in the component library, drag it onto your breadboard, and connect its terminals with wires to other components in your circuit. You can then click on the PIR Sensor to set its name for easy identification.
A Passive Infrared (PIR) Sensor is a motion detector that detects a change in infrared (IR) radiation, typically from a moving human or animal, and does not emit energy itself. The key components include a pyroelectric sensor (often a dual-element type to detect differential changes), a specialized Fresnel lens to segment the field of view and focus IR energy, and a signal processing integrated circuit (IC) to amplify the tiny signal and provide a digital output. Common types of PIR modules are categorized by their mounting (e.g., wall or ceiling), power requirement (e.g., low voltage 3V to 12V DC), or complexity (Dual-Tech PIR, which combines IR with microwave). Key specifications include a Working Range of up to 7 meters to 12 meters (m), a Detection Angle up to 120 degrees (∘), and a minimal Quiescent Current (power rating when idle) often in the microampere (μA) range for energy efficiency.
Website Title: Circuit Digest
Website Page URL: https://circuitdigest.com/microcontroller-projects/interfacing-ir-sensor-module-with-arduino
URL recommended for (Reason): An excellent beginner-friendly tutorial for interfacing an active IR sensor with Arduino, including code, wiring diagrams, and examples of basic projects like obstacle avoidance.
Website Title: Murata Manufacturing Co., Ltd. (Basic Sensor Information)
Website Page URL: https://www.murata.com/products/sensor/infrared/overview/basic/kind
URL recommended for (Reason): Provides a clear, concise technical explanation and comparison of IR sensor types (Active vs. Passive) and the fundamental operating principles from a major component manufacturer's perspective.
Website Title: Allelco (IR Sensor Guide)
Website Page URL: https://www.allelcoelec.com/blog/IR-Sensor-Guide-with-Working-Principle,Applications,Types-and-Comparison-with-PIR-Sensors.html
URL recommended for (Reason): Offers a comprehensive introduction to IR sensors, detailing the working principle, module components, a breakdown of different types, and a crucial comparison with PIR sensors.
Website Title: Adafruit Learning System
Website Page URL: https://learn.adafruit.com/ir-sensor
URL recommended for (Reason): A detailed guide focusing on the use of IR receiver modules for remote control applications with microcontrollers, including component differences, technical specifications, and relevant code examples.
Website Title: Instructables (DIY - IR Module)
Website Page URL: https://www.instructables.com/DIY-IR-Module/
URL recommended for (Reason): Provides a step-by-step tutorial on how to build a basic active IR sensor circuit from fundamental electronic components (IR LED, photodiode, and comparator IC).
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