Pin configuration for glass breaking sensor

[hez_91]

Hi

I am working on a anti house breaking system project and i just purchased a glass breaking sensor. However, I am not sure how to configure the pins of the glass breaking sensor.

It has +, -, Relay NC, RelayCOM and 2 anti-tamper output pins.

Here is the datasheet.
**broken link removed**

I have no problems with the +, - and output pins but a little confused with the relay pins.
Can anyone help me with that?

 

[IanP]

Have a look at the attached picture ..
When sensor is trigged the active path goes via RLY(Comm) and RLY(NO), so the loop RLY(COmm)-RLY(N.C) is open..

IanP

 

[hez_91]

Thanks for the help.

My aim is to get a logic "1" when the sensor detects a glass break for microcontroller program to trigger a series of events.

I have connected
+ to Vcc
- to Ground.

Where should I connect the rest of the pins to?

 

[IanP]

Connect RLY[Comm] to GND ..
Connect a pullup resistor to +5V and RLY[N.C]

When the sensor is not activated the RLY pulls the signal down to GND – logic ‘0’ ..
When the sensor is activated, the RLY's contact is open and the pull-up resistor pulls the voltage up to 5V – logic ‘1’ ..
See attached picture ..

IanP

 

[hez_91]

Thanks for your effort.
It was really helpful