© 2015 Matthias Kuhs, Ireland

Building Control ProjectAUTOMATED BUILDING AND HEATING MANAGEMENT SYSTEM

The Problem(s)

Event-based building occupation No 24/7 heating! Correct room temperature needed on event start Outdoor and current room temperature needs to be factored in Remote control and monitoring needed; alerts via email or SMS Power usage monitoring and alerts Optional: access control or intrusion alerts Optional: lighting automation Optional: temperature zones for different events Mandatory: Low cost, low overhead

The Solution

Raspberry Pi based solution (low power usage)

Tinkerforge sensors and actuators (no hardware tinkering necessary)

Python code base (runs also on PC)

Web-based event management (MySQL database)

Off-line modus (runs even with Internet connection down)

Flexible and extendable (e.g. for oil tank monitoring)

RESTful API between Frontend (WWW) and backend.

Hard- and SoftwareTECHNICAL DETAILS

Hardware

Raspberry Pi (2 or B+) with RaspBianwith Hamachi VPN, Nagios, SSMTP, LogWatch, LAMP

Alternatively: Windows (7/10) PC with Python 3.4

USB-attached Tinkerforge modules Temp sensors, relay switches, motion detectors

Alternatively: GPIO-attached sensors and actuators

Youless energy monitor

LAN with Internet connection

Software, local

Backend: LAMP/WAMP system with Python modules:

Collecting sensor data Controlling actuators Synchronizing with on-line event DB Event management Shell-scripts as Cron-Jobs for continuity

Local backup database for Events Sensor data Logging

Software, web-based

API:

Provides interfaces for: Events

Sensor data

Logging

Frontend:

jQuery-based HTML page with Current values/status display

Graphs for temperatures and power usage

Event monitoring and management

Frontend GUI explained

Features:

Current values

Recent ‘actions’

Room temp. graph

Power usage graph

Events list

Highlights / Observations:

Today’s event

Calculated switch-on time

Regular power users (here: fridge)