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People do not occupy spaces for a large percentage of time, and are not diligent about controlling the lighting in their spaces during workdays, after hours and weekends. This applies to both public spaces as well as personal spaces. The majority of energy waste occurs during the weekdays, not during the weeknights or over the weekends. Patterns of energy waste is particularly suited to control by occupancy sensors, which not only prevent runaway operation after typical business hours, but also capture savings during the business day.
Although the majority of observed savings opportunities occurred during the weekday, the peak savings contributions from occupancy sensors for several space types did not fall within the typical peak utility billing periods (early afternoon) or peak commercial building demand periods (10 a.m. to 4 p.m.). This suggests that while sensors may help to save expensive kilowatt-hours, they would have a variable effect at reducing a building’s peak demand, given their variable performance in when they provide high levels of savings among the various space types. This would be a useful topic of additional research, where assigning specific kilowatt-hour rates to each kilowatt-hour saved would yield more accurate indication of the economic benefits of installing sensors within these various space types.
Finally, modeling control scenarios with 5- to 20-minute time delay periods indicated savings potentials that were within the ranges suggested by the industry estimates. The time delay settings used for these analyses showed that energy savings can range from between 6% and 13% depending on the application and on which time out setting is used. In addition, the highest savings were obtained in office applications (47% to 60%), and the lowest in heavy trafic rooms (17% to 29%) like gangways and entrances. Thus, the time delay selection can greatly impact energy savings.
Using motion detection switches improve user comfort and convenience by providing a simple way to turn on and off or dimming to a substantial lower energy level of multiple lights when entering or exiting a room. Installing a thoughtfully engineered master switch designed for energy saving will meet code requirements and maximize savings – preventing lights from burning in empty rooms. Studies illuminate significant energy saving opportunity.
Dimming lighting in temperay unused hallways and stairs to a substantial lower energy level gives a more familiar environment then entering this in full dark, it provide also a welcoming feeling when entering an empty room. Many users leave the lighting on very often because the lightswitch is difficult to reach.
Studies show that toilet lighting offer one of the largest energy saving opportunities by eliminating unnecessary extended operation of the lighting. The studies also conclude that when the control solution includes provisions for dimming lighting to a substantial lower energy level, such as solutions offered by MULTIPOINT, energy waste is prevented and user satisfaction is improved.
75% of the energy used by toilet lighting occurs when the lights are left on for longer than 5 minutes than strickt nessesairy, 2 of every 5 users leave the individual toilet lighting, after using the toilet, on because they expect that the switch is dirty.
Without automatic controls, lighting in public access restrooms is often left on 24 hours a day. An ideal solution is to install a MULTIPOINT ultrasonic occupancy sensor on the ceiling above the restroom stalls ensuring that lights turn on and remain on when the space is occupied and turn off after the space is vacated.
MULTIPOINT Ultrasonic Occupancy Sensors are invisible and detects occupancy beyond most obstacles such as ceilings and partitions between stalls.
MULTIPOINT dimmers and scene controls allow facillity owners to customize the lighting in shops, workspaces, public domains and carparcs. Occupancy sensors ensure that theses spaces are only lit when they are in use, translating into reduced utility bills.
Workers with their hands full may neglect to turn off lighting in the many supply rooms scattered throughout a facility, after all, they don’t pay the power bills.
Providing occupancy-based controls in rooms ensures energy savings and lets the staff work efficiently by automating the lighting control.
Similar in usage patterns to utility rooms and storage room lighting is often left on all day when the space is only occupied intermittently. With floor to ceiling shelving, or other features unsuitable to occupancy sensors, these spaces are best controlled by MULTIPOINT Ultrasonic Occupancy Sensors.
Exterior lighting is critical to user safety and security, as well as to ambience, and represents a large component of a facility’s energy use. Parking lots, garages, walkways, canopies, pool and patio areas all have different control requirements, but centralized control solutions ensure that lights are on when needed while preventing energy waste and maximizing savings.
Facillity spaces who are used for operations present an enormous opportunity for energy savings, as lighting is often left on for long periods of time when these areas are not in use. Controls such as MULTIPOINT occupancy sensors can help to keep energy use and operating costs down.
Cantines can implement MULTIPOINT occupancy sensors in the eating and distribution areas, lights will turn on and remain on as long as workers/eaters are present.
MULTIPOINT occupancy-based lighting control is also recommended for hallways.
Install MULTIPOINT sensors in the warehouse to turn lights on and off or automatically dimming in specific areas such as shelving aisleways.
The MULTIPOINT occupancy sensors can also controls lights specifically in spaces such as cold storage.
Not to be forgotten are the offices occupied by executives and management staff. Why leave lights on in vacant offices when occupants are attending meetings or are elsewhere on the property? MULTIPOINT Sensors can easily replaces standard wall switches for retrofit or new construction.
MULTIPOINT offers complete lighting control solutions for every building, including daylight controll options.
There are two types of motion sensors currently commercially available: Active and passive sensors.
A motion sensor is classified as being active only when it emits some kind of energy into the surrounding medium to make an accurate reading, whether it is infrared light, microwave radiation or sound waves.
Passive motion or PIR sensors
Passive motion sensors do not emit energy, but can identify movements by reading relative changes in the energy in the surrounding medium.
Passive motion sensing detectors work by measuring the incoming infrared energy. They are widely known as PIR (Passive Infra Red) sensors, or pyroelectric detectors. Heat can be transmitted by contact, convection or radiation. Infrared light is responsible for transmitting heat through radiation, and because the human body is a heat source it also emits infrared radiation. The outside skin temperature of a human body is usually about 34 degrees Celsius, meaning it is radiating energy in the infrared spectrum between 9 to 10 micrometers.
The PIR sensors have in fact a much wider range, between 8 to 12 micrometers. The detector itself is a photodetector able to convert light in these specific wavelengths into a small electrical current that is then amplified and processed through a small computer. The alarm will only trigger when the motion detector observes rapid variations in infrared energy distribution, such as those associated with the normal movement of a human.
Any smaller variations in energy reading are being filtered out, so that the sensor is not being triggered accidentally by natural events such as the slow heat variations in the supervised area. Infrared light emitted by the objects is focused with the help of a plastic lens, since glass is opaque to infrared light. This is why PIR detectors cannot be triggered by events taking place on the other side of a thin wall or window. An other disadvantage is that PIR sensors don't registrate movements in closed rooms like toilets, because the measured temperatur don't changed during toilet use.
The fact that glass is opaque to infrared light is also the reason why heat accumulates inside greenhouses. Light that is able to penetrate the glass would enter the greenhouse and heat the objects inside, which start emitting infrared radiation. However this energy cannot be radiated outside the greenhouse and further accumulates in the form of heat.
Active motion or Doppler sensors
MULTIPOINT produce only active movement detectors. The MULTIPOINT motion detector sends out and receives a high frequency microwave (radar) signal. The MULTIPOINT radar signal bounce back to the sensor in a fixed amount of time, and with a fixed amount of energy. If something gets in the way of these waves, the reflection will be different and then the sensor will be activated.
Passive sensors use less energy than active sensors, but they still have to be "plugged in" to function, so they consume standby power. The cheapest alternative for a movement detector would be to just turn on the lights when you need them, but the best part of the movement detector is that you don't have to stumble in the dark to find the light switch and turn them on.
MULTIPOINT like to give you at least 27 Good Reasons to use the unique MULTIPOINT combination of MULTIPOINT Doppler sensors and MULTIPOINT dipswitch controlled dimmable ballasts:
1. Reduced energy levels means also reduced airconditioning loads
2. Cut in electricity bill
3. Energy saving
4. Longer lamp life
5. Cut in stock holding of lamps
6. Save on lamp maintenance labour costs
7. Positive impact on the environment
8. Reduction of toxic gasses eg. CO2, NOx, SO2, etc.
9. Longer lamp live means longer light equality without lamp remplace
10. Less waste disposal costs
11. Calm & flicker free light
12. Operation without noise
13. Better quality of light
14. Reduced eye strain
15. Ultra low magnetic interference field
16. Ultra low harmonic disturbtion
17. More productive work environment
18. Simple ways to perform an automated room comfort
19. Flicker free light & dimmable
20. Automatic dim switching
21. Easy to compensate natural sun light levels
22. Higher lightlevels without higher energy bills
23. Gears can build in small fixtures
24. Sensors can build in small fixtures
25. Lamps are not switched-off or dimmed when a person sit and read quit under those lamps
26. Shops can easy reduce energy bills when no staff or clients in that area, without loosing any attracktivity for clients
27. Shopstaff can easy keep track on clients outside busy periods
Do you need more information about the MULTIPOINT products, please, send us an
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