Difference between revisions of "Sensors and Controls @ DILC"

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* redundant power-failure alert system
* redundant power-failure alert system
[[File:Power_failure_notice.png|250px|thumb|left|UPS Notice from Site 1]]
[[File:Power_failure_notice.png|250px|thumb|left|UPS Notice from Site 1 (Mezza North]]
[[File:UPS_notice_2.png|350|300px|thumb|center|UPS Notice from Site 2]]
[[File:UPS_notice_2.png|350|300px|thumb|center|UPS Notice from Site 2]]
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Revision as of 05:08, 28 November 2013


a cost-effective, robust, integrated multi-trigger security and alert system using off-the-shelf or recycled hardware and sensors and open-source software technologies for messaging, video streaming and recording, machine vision, video analytics, thermal and power monitoring and control. It provides multi-channel feedback (Twitter, Email, SMS, etc).

Trigger Events

  • heat (aircon not working, fire)
  • smoke (smoke detector linked to online alarm system)
  • motion (person entering/leaving building or room)
  • sound (fans, batteries failing, alarm of non-networked motion or thermal sensors)
  • power outage

alpha version of the "big plan" for smoke and heat sensors


  • SMS
  • email
  • video recording
  • log recording
  • alarm (sound, light)
  • phone dialling


IP camera, POE (Power Over Ethernet), direct-to-NAS recording (AFP, SAMBA, or NFS), inputs for PIR sensors, Infra Red light for night vision, mechanical IR-Cut Filter Switch (basic surveillance functions incorporated into the camera; camera sends stream when preset event occurs; system send SMS/email), NAS (www.nas4free.org - ZSF file system 4 TB RAID Z2)

Smoke and Temp Module


This module monitors room temperature independent of on-board temperature sensors (also monitored) in our servers. It is especially useful in keeping optimal temperature for DILC's data center. Cooling the room too much is a waste of energy. Temperature readings are occasionally verified using 3rd-party thermal instruments.


Gizduino X (see manual)


temp: LM 35. See this

temperature monitoring screen


ethernet. See also Arduino Ethernet Shield

Motion Detection and Video Monitoring Module

  • combination of mid-, low-end; recycled, old, new cams
  • redundant off-site recordings (continuous and motion-activated events) and picture snapshots
old camera parts
Interns doing camera configuration

  • motion sensors compensate for "blind spots"
sample night vision shot

Power Monitoring Module

  • uses embedded sensors to monitor temperature and power outage and recovery
power summary
UPS temp reading for a day

  • redundant power-failure alert system
UPS Notice from Site 1 (Mezza North
UPS Notice from Site 2

NAS Module

Messaging Module

part of a GSM Dongles dashboard @DILC

Webapps and Dashboard Module

Framework Choices: Twisted, Nodejs or alternatives
  • to incorporate streams of data from sensors embedded in equipment


See Also