How to Build an Interactive Surveillance System Using Raspberry Pi and a QNAP NAS

Two typical scenarios with this system would be:

Scenario 1:

• Motion is detected by the IP Camera
• IP Camera, that is already connected to QVR Pro, triggers an event in QVR Pro
• QVR Pro sends an HTTP message to QIoT Suite
• QIoT Suite modifies and sends an MQTT message to the Raspberry Pi's Piezo Vibrator and LED Light
• The user can flick the Rocket Switch to stop Piezo Vibrations and turn off the LED Light

Scenario 2:

• The user pushes the Push Button on the Raspberry Pi
• Raspberry Pi sends an MQTT message to QIoT Suite
• QIoT Suite sends an HTTP message to trigger an event in QVR Pro, which already has an IP Camera connected
• IP Camera begins to record

• QNAP NAS:
  • QTS Applications:
    • QVR Pro
    • QIoT Suite
      
• PoE Ethernet Switch
  
• IP Camera (capable of motion detection)
  
• Raspberry Pi
  
• GPIO Extensions:
  • Piezo Vibration
  • SPDT Switch
  • LED Light
  • Push Button

• Connect the NAS, Raspberry Pi and IP Camera to the PoE Switch
• Connect the GPIO Extensions to the Raspberry Pi (it is recommended to use a breadboard)

Things:

• Name: QVRPro
  Category: Custom
• Name: RPi
  Category: QIoT Supported
  Type: Raspberry Pi

Resources:

• QVRPro:
  
  • Name: motion
  • ID: motion
  • Type: Custom Sensor (Boolean)
    Note: Click Connect a device > HTTP > next > download json. This information will be used to connect to QVR Pro in Step 5.
    
• RPi:
  
  • Scenario 1:
    • Name: vibration
    • ID: vibration
    • Type: Piezo Vibration
      Note: Click Connect a device > MQTT> next > download json. This information will be used to connect to Raspberry Pi in Step 6.
    • Name: rSwitch
    • ID: rSwitch
    • Type: Piezo Vibration
      
  • Scenario 2:
    • Name: button
    • ID: button
    • Type: button

Nodes:

• [QBroker In] QVRPro:
  • Thing: QVRPro
  • Resource: motion
  • Note: This node will receive {"value": "detected"} when QVR Pro detects motion
    
• [QBroker In] rocket switch:
  • Thing: RPi
  • Resource: rSwitch
• [Function] true:
  • msg.payload = true;
    return msg;
• [Function] false:
  • msg.payload = false;
    return msg;
• [QBroker Out] RPi:
  • Thing: RPi
  • Resource: vibration

Nodes:

• [QBroker In] button:
  • Thing: RPi
  • Resource: button
• [http request] http request:
  • HTTP address from QVR Pro

Event for Scenario 1:

• Name: motionDetect
• if: Motion Detection
• then:
  • Type: Action URL
  • Target: : /resources/
    Note: these values are found in the resource.json file from Step 2
  • HTTP Body: {"value" : "detected"}

Event for Scenario 2:

• Name: button
• if: Action URL
  Note: Paste this HTTP URL into QIoT Suite in the previous step
• then: Camera Record

Nodes:

• [MQTT In] qiot/things/admin/RPi/vibration:
  Note: Topic can be found from QIoT in Step 2.
  
  
• [Switch] switch:
  • Receives either true or false
  • true directs to int 50
    • redirects to int 1 for LED Light
  • false directs to int 0
    
• [RPi-GPIO Out] piezo:
  • PIN: 17
  • Vibrates at a frequency between 0 to 100, in this case it will vibrate at 50
    
• [RPi-GPIO Out] led:
  • PIN: 18
  • Receives 1 for on, 0 for off
    
• [RPi-GPIO In] rSwitch:
  • PIN: 24
  • Triggers when the switch is flickered
    
• [MQTT Out] qiot/things/admin/RPi/rSwitch
  Note: Topic can be found from QIoT in Step 2.

Nodes:

• [RPi-GPIO] button:
  • PIN: 21
  • Triggered whenever the button is pressed
    

• [MQTT Out] qiot/things/admin/RPi/button:
  Note: Topic can be found from QIoT in Step 2.