energy optimisation using sensors

2. ● Man made lighting.
● For humans to function
properly.
Artificial lights are divided into three types
:

3. AMBIENT INDOOR LIGHTING
Types of fixtures that can provide
ambient indoor lighting:
• Chandelier
• Ceiling mounted fixture
• Wall-mounted fixture
• Traditional recessed fixtures and/or
LED Downlights
• Track light
• Floor lamp
• Table lamp
TASK LIGHTING
Types of Fixtures that Provide Task
Lighting:
• Directional gimbal recessed fixture
or downlight
• Pendant lighting
• Slim line bar and undercabinet
• Tape and extrusion
• Portable or desk lamp
ACCENT LIGHTING
Types of Fixtures that Provide Accent
Lighting:
• Track light
• Slim line bar and undercabinet
• Tape and extrusion
• Directional recessed fixture or
downlight
• Wall-mounted fixtures

4. ENERGY OPTIMIZATION USING SENSORS
WHATTASKS DO SENSORS FULLFILL ?
Mounting heights, room sizes, detection geometry and indoor climate
conditions – individual building needs are frequently complex.
To control the lighting systems using sensors/dimers and other devices-
INTELLIGENT LIGHTING SYSTEMS.
INTELLIGENT LIGHTING SYSTEMTAKES INTO ACCOUNT:
• Human presences.
• Daylight.
• Amount of illuminance.
• Region of presence in a large room.
• No of person in a room.

5. • DECTECTING TRANSVERSE MOTION:
Motion sensors respond to walking and
vehicular motion. They perceive this
their detection range and respond
accordingly.
• DECTECTING OCCUPANCY :
Occupancy sensors feature more sensitive
detection than motion sensors, responding to the
slightest movements with extremely high
resolution technology, for example with desk
work. Each occupancy sensor is also a motion
sensor, although not all motion sensors are
occupancy sensors.
• UTILIZATION OF DAYLIGHT :
Light sensors measure the quantity of
ingressing daylight on a reference
surface in a building. If the illuminance
level falls below a preset nominal value,
artificial light is added according to
requirements .
• CAN A SENSOR CARRY OUT SEVERAL TASK SIMULTANEOUSLY?
Yes – multi-sensors enable the combination of occupancy and motion
detection as well as daylight-dependent control of light. These all-
rounders can however only be used with a single function, i.e. only
presence and motion detection or only daylight-dependent lighting
control. With multi-sensors it should be considered that the
detection ranges of individual functions vary.

6. Which technology is most suitable?
Two sensor technologies are sufficient to fulfil all
demands for motion and presence detection, and one
technology is not better than the other. Intelligent use
depends on the specific requirements, and a
differentiation is made between the basic sensor types
passive infrared or high frequency sensors.
PASSIVE INFRARED SENSORS : PIR
Infrared sensors perceive heat radiation,
for
example from moving persons and
vehicles.
Moved warm objects are detected by high
sensitivity
sensors as voltage variations.
The detection precision of a sensor
depends
on its resolution and the number of
detection
zones.
Detection features
——faceted lens
Benefits
——high resolution
——insensitive to vibrations
HIGH FREQUENCY SENSORS: HF
High frequency sensors actively sampl
detection range. As with bats, signals
out
and then received as reflected echo s
Modifications to the echoes correlate
detection of movement, implemented
delay and independent of temperatur
without limiting sensitivity due to mo
direction
or temperature.
Detection features
——closed housing
Benefits
——wide range
——temperature-independent
——covered mounting is possible
SEGMENTED
LENS
PYRO-
SENSOR
DETECTION
ANGLE
Tip: determining the right mounting
location for PIR and HF sensors
Selecting the right installation location for
a sensor prevents erroneous switching,
triggered for example by temperature
fluctuations, strong draughts or vibrations.
Sensors must be mounted so that their
detection ranges are not impaired by
machines,cranes, vehicles or doors.

7. HOW CAN NATURAL DAYLIGHT BE UTILISED ?Natural sunlight increases physical and mental performance, enhances
the supply of oxygen for the organs and prevents premature signs of
fatigue. Innovative lighting concepts take into account the use of
daylight ,using artificial lighting as a supplement to achieve requisite
illuminance levels.
Light sensors determine the lighting situation via reference sampling
surfaces. Threshold switching or light control according to daylight
regulates the need for artificial lighting.
Available:
Two technologies for controlling artificial light
according to needs
-
Daylight-dependent threshold switching :
This switching method functions similarly to the
sensor-based
lighting of cars. The lighting system is
automatically switched
on or off from a predefined minimum
illuminance level, and
together with motion and presence sensors,
luminaires are only
switched on with movement and low light.
Daylight-dependent lighting control
With this form of control, the desired
illuminance is set beforehand.
The system adds artificial light at precisely the

8. How is a detection range precisely set?
Fine adjustment of the detection range is
possible
with almost all sensors. According to the
sensor,
this is either electronically via remote
sensors)
or mechanically via shields (PIR sensors).
These shields can be fitted without use of
or can be
pulled out with sensors embedded in
This then excludes the detection of
areas.
At which mounting heights are sensors
fixed?
Mounting heights are highly important
when specifying
sensors, and the specific detection task
and detection range
must also be considered.
Maximum mounting heights:
——Presence sensors can be used up to
mounting heights
of 3.5 m. This limit is due to physical
reasons.
——Motion sensors can be used to
heights of 13 m. Due to
the detection angle, mounting heights
vary with the range
of the sensor.
——Light sensors can be used to heights
of 12 m.
——Multi-sensors enable presence and
motion detection
With which construction des
are sensors available?
Modular concepts.
Integrated sensors.
Thank you
Nitin bopanna tr
TOSA