AUTOMATIC OPERATING STREETLIGHT

PURPOSE: A streetlight is provided to prevent the inflow of the rainwater inside an illumination sensor by arranging the illumination sensor under a transparent window. CONSTITUTION: An illumination sensor(100) is installed on one side of a streetlight to sense an ambient illumination. A timer(200)...

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Bibliographic Details
Main Authors LEE, TAE JOO, JUNG, CHANG HO
Format Patent
LanguageEnglish
Korean
Published 16.04.2010
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:PURPOSE: A streetlight is provided to prevent the inflow of the rainwater inside an illumination sensor by arranging the illumination sensor under a transparent window. CONSTITUTION: An illumination sensor(100) is installed on one side of a streetlight to sense an ambient illumination. A timer(200) outputs a current date and a current time. A storage(300) stores an on-time and an off-time. An operation unit(400) determines the on/off of the streetlight by comparing the current date and time with the on-time with the off-time. A controller(500) determines the on/off of the streetlight by comparing the ambient illumination with the preset value. A determining unit determines the abnormality of the illumination sensor by analyzing the change of the output signal of the illumination sensor.
Bibliography:Application Number: KR20080098542