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Niranjini Rajagopal, 01/28/2013 06:54 pm

Building Energy Optimization

Project Description

The Building Energy Optimization System is a sensor network consisting of several power and environmental sensors to monitor and understand energy usage patterns with the objective of giving the user feedback on reducing the energy consumption.

System Components

The network architecture is shown in the figure below.

The Three-phase energy meter is used to measure the aggregate energy consumption of all appliances. Each plug-through power meter measures the energy of an individual appliance. Every magnetic-field based energy sensor is placed in the proximity of an appliance, and detects the state change when the appliance turns on or off. The environmental sensors measure the ambient light, temperature, audio, pressure, acceleration and humidity and detect human motion in the proximity. The thermal sensor is mounted on the ceiling and generates a thermal map upon scanning the entire room. The thermal and the environmental sensors data can be correlated with the per-appliance energy consumption and can give useful information on usage patterns, and can also help detect building and appliance faults.

Each of the sensors are described briefly below:
  • Environmental sensors
    The Environmental sensing board has the following sensors:
  • Light
  • Audio
    Barometric Pressure
    3-axis acceleration (vibration)
    PIR Motion
    Liquid / Relay switch

  • Thermal Sensors
  • Three-phase energy meter
  • Plug-through energy meter
  • Magnetic-field based energy meter

Energy_Sensor_Network4.jpg (36.3 KB) Niranjini Rajagopal, 01/28/2013 06:15 pm

ff3-env-sensor.jpg (35.8 KB) Niranjini Rajagopal, 01/28/2013 06:49 pm

ff3-plug-back.jpg (28.1 KB) Niranjini Rajagopal, 01/28/2013 06:59 pm

ff3-plug-front.jpg (21.8 KB) Niranjini Rajagopal, 01/28/2013 07:01 pm

3phase-meter.jpg (26.1 KB) Niranjini Rajagopal, 01/28/2013 07:04 pm

3phase-bottom.jpg (28.7 KB) Niranjini Rajagopal, 01/28/2013 07:04 pm

Thermal-scanner.jpg (6.22 KB) Niranjini Rajagopal, 01/28/2013 07:11 pm

Thermal-scanner-3D.jpg (15 KB) Niranjini Rajagopal, 01/28/2013 07:12 pm

emf-sensor.jpg (10.8 KB) Niranjini Rajagopal, 01/28/2013 07:26 pm

plug-front.jpg - Plug Meter Front (34 KB) Anthony Rowe, 04/21/2013 04:39 pm

ExternalPinConn 3Phase Meter.pdf - Details of current and voltage connections for the 3-phase meter (218 KB) Niranjini Rajagopal, 10/16/2013 05:44 pm