PIR motion sensor HC-SR501

PIR sensor type HC-SR501 allows for motion detection on the basis of infrared radiation. The detector detects the change of 2 separated IR windows and the amplifier converts the signal pulse with a high logic level. Such a signal can easily be used to drive a transistor or logic input processor.

In the case of the use of Lan Controller detector output must be connected to a logic input INPD1 ÷ INPD4. Note, however, that forced the detector Low Low condition is a state of rest, and the high high points to the liberation PIR-a.

On the board there are 2 potentiometers described as Sx and Tx.

Tx sets the high state after operation of the detector - for several time s potentiometer should be a paragraph. roughly 9 per hour.

Sx sets the delay vigil after the final liberation - here changes very little adjustment in a short time frame.

The sensor operates in retriggerin, i.e. in the case of motion detection at the output is maintained at all times high.

Technical data:

• Power supply: 5 ÷ 24 V
• Working range: up to 7 m
• Viewing angle: 360° x 100°
• Signalling: High - motion detection, Low - lack of exercise
• Dimensions of 32 x 25 x 27 mm