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Light

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by

Ivo Penchev

on 23 March 2015

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Transcript of Light

Light control systems
Dimmers and Smart Control Systems
Wiring
Group 2
Stefan, Jenny, Alex & Ivo

Light controlling represents more than use of motion sensors. It is the optimal connection between user interfaces, control units, daylight, electronic control gears, and more.
There is a growing market of light control manufacturers, coming with products which are more and more innovative.
Among them, we can mention:
What is it?
How it used to work?
Advantages : Adding a central lighting control system to your home provides greater security and convenience, as well as making it easy to set the desired level of lighting automatically in each room.
How it works now?
GE Lighting
Control wiring provides a path for command and status communication between control devices in a lighting and control system.
Line voltage wiring ( class 1 ) Provides power 120-277VAC
The lights are switched ON/OFF using a controller that closes or opens the circuit to provide or deny electric power.
Line-voltage wiring is very familiar to electrical workers and therefore less prone to installation error, can provide both power and communication.
Line-voltage wiring offers limited control options and flexibility, as circuiting/zones are relatively fixed.
Low voltage wiring ( class 2 )
provides a pathway for power 10-24VDC
Most codes allow low-voltage wiring to be run without conduit and junction boxes, allowing it to be installed independent of the power wiring
Unshielded low-voltage conductors can pick up electrical contamination in the environment. There may also be limits to the number of control devices that can be connected to the network.
An example of a completely wireless Crestron home control system.
Improving system-wide control over lighting & best way to ensure that lighting energy is automatically reduced as much as possible.
Full-featured control with added flexibility, reliability, scalability, ease of installation and use.
This can save
you money!
Wireless Lighting Control systems utilize wireless technology to communicate commands between endpoints – sensors, switches, and the ballasts or LED drivers connected to lights. Wireless system uses a controller with an antenna that communicates wirelessly between a set of devices.
Structure
Or...
- Centralized control system – which controls the whole system
- Sensors (occupancy, photosensors etc) – which determine whether the lights should be on or off
- Switches and dimmers – optimize lighting conditions
- Scheduling – determines the functioning times and periods of the system
- Interface – manages all those listed above
- Device/method of communication with the control system – remotely controls the system
- *Consumption monitors – monitoring usage, helps designing energy strategies
Just send less voltage to the bulb !
Working principle
Light control systems have the main purpose of providing light to the areas that need it only when it is truly necessary
There are several lightning control strategies:
- Predicted occupancy control strategy – turning lights on and off on a preset daily schedule, according to building occupancy
- Real occupancy control strategy – also based on the occupancy time of a space; detects when the room is actually occupied through sensors
- Constant illuminance control strategy – based on keeping a constant level of lightning in a room by analyzing it through a photocell sensor and compensating or diminishing the light level if needed
- Daylight harvesting control strategy – similar to the constant illuminance control strategy
- Integration of lightning control – based on co-operation between the lightning system and other complementary systems of the building (HVAC, alarm)

Source: http://lifx.co/lighting101/smart-lighting/control-systems/
Source: http://lifx.co/
Smart Lighting
Control Systems
Automatic turn on/off
Pre-programming and instant changes
Individual programming of every room
Level of light, depending on time and location
Possibility of sensor installation
App Enabled
Physical Wall Mounted Unit
Integrated Control Unit
Non-Integrated Control Unit
WiFi, Bluetooth, Radio
Types
Source: http://lifx.co/
Full transcript