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ماژول HC-SR505 بر اساس سنسور مادون قرمز و یا سنسور حرکتی SR505 ساخته شده و می تواند وجود و حرکت افراد را از فاصاه 3 متری تشخیص دهد. اساس کار این ماژول کوچک PIR است و دارای سه پین مثبت منفی و سیگنال می باشد. انرژی های دارای اشعه هستند و بدن انسان بر اساس مادون قرمز از خود تشعشع انرژی می کند و این سنسور می تواند حرکت انسان را با دقت بالا و قابل اعتمادی تشخیص دهد.
مستندات:
دیتاشیت سنسور حرکتی SR505
Description:
The module is basically used in applications where you want to detect the motion of a body which emits infrared radiations. HC-SR505 is preferred to be used in battery operated systems since the device is specifically designed to be operated by consuming very less power.
HC-SR505 is a pyroelectric motion sensor. All the objects having a temperature above absolute zero release heat energy. This energy is in the form of infrared radiation. Even human bodies emit infrared light radiations. HC-SR505 sensor detects the motions of the object by measuring the changes in the level of infrared light radiations that is radiating from objects. This sensor is highly sensitive and provides automatic control. It is highly reliable and performs the operation by consuming very low power.
Application:
low power consumption
light-activated systems and for security purposes
security systems
Specifications:
Operating voltage range: DC4.5-20V
Quiescent Current: Level output: High 3.3V / Low 0V
Trigger: reusable trigger (default)
Delay Time: The default 8S + -30%
Board Dimensions: 10 * 23mm
Induction angle: Sensing distance: 3 meters
Working temperature: –20 to +80 degrees
Sensor Lens Dimensions: Diameter 10mm