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myDAQ SecuritySystem

Introduction

The myDAQ Security System consists of a Pressure Pad and a PIR Motion Sensor. When one of the sensors is activated the outputs are an audible alarm and a flashing (both on the hardware and front panel). The LabVIEW code handles the digital signals coming into the system and writes to file the instances at which each sensor had been activated.

The code behind this system is very basic and ideal for people just getting started with basic Data Acquisition.

Video

Materials

1x myDAQ

1x Speaker/Headphones

1x Pressure Pad

1x PIR Motion Sensor

4x N/O Button Switches

4x LED Lights

Software

The front panel provides the ability to change which sensor is in operation. The options are Pressure Pad, Motion Sensor or Both Sensors. The frequency of the audio can also be changed on the front panel.

The code can be stopped by guessing the correct 4 digit combination. This is inputted via hardware but appears on the front panel. When you stop the code you have essentially deactivated the alarm.

Sec1.jpg

The block diagram has been deliberatly designed so it is easy to understand and use. It is split into top (the acquisition of the digital signals) and bottom (the password matching functionality).

Sec2.jpg

Hardware

Sec3.jpg

Anything that isn't explained here should be explained in the attached video.

This was developed by Michael Parkin NIUK AE Intern 10/11

Ashish Naik
Automotive Business Development Manager
National Instruments UK
Contributors