Photocells


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Photocells

A light-sensing device used to measures the amount of incident light present in a space and activate controllers at dawn or dusk.
References in periodicals archive ?
Photocells ensure that a certain level of light is maintained in a given area at all times.
Using four pulses of laser light on nanoparticle photocells, the work could inspire devices with improved efficiency in solar energy conversion, Khaleej Times reported.
LEDs are not affected by frequent on and off cycles and are usually dimmable, making them more compatible with controls such as occupancy sensors and photocells for daylight harvesting.
Automation can be used to start regranulators, based on photocells which detect feeding of the regranulator, and to stop regranulators, based on monitoring the vibration or current drawn.
Both photocells and infrared occupancy sensors are installed to ensure ideal color temperature levels based on natural light and the number of occupants at the station.
Navid has advanced control technology, a higher-resolution camera and photocells to generate power.
More than 20,000 LED equivalents will replace the fluorescent bulbs and about 1,000 incandescent 100 watts (screw fitting) bulbs used for exterior security lighting with the LED equivalent with photocells, according to energy and sustainable development advisor, Hugh Sealy.
Daylight harvesting: Adura's system uses photocells that communicate through the wireless mesh network.
Photocells were also included in the open office spaces that have access to daylight.
The encoder, working with six extra photocells and sensors, assures that contaminated product won't get further than the rejection container.
The satellite's scientific equipment consists of two photocells designed to provide the first pictures of earth's cloud cover.
The other cost options are to spend pounds 20,000 fitting separate timing clocks on each individual column or spending pounds 13,000 on fitting light sensitive photocells on each column so that the lights would only be on when the street lights were on.