APPARATUS AND METHOD FOR MEASURING AMBIENT LIGHT INTENSITY USING LIGHT-SENSITIVE RESISTOR

A method and a system for measuring ambient light, including detecting power transition of electric power powering a LED light source, where the power transition comprises at least one power transition from OFF to ON and at least one power transition from ON to OFF, performing a plurality of measure...

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Bibliographische Detailangaben
1. Verfasser:	GABAI, Oz
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BLASTING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GENERATION HEATING LIGHTING MECHANICAL ENGINEERING STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	A method and a system for measuring ambient light, including detecting power transition of electric power powering a LED light source, where the power transition comprises at least one power transition from OFF to ON and at least one power transition from ON to OFF, performing a plurality of measurements of output signal of an LDR measurement circuit, wherein the plurality of measurements is performed between the power transition from ON to OFF and the power transition from OFF to ON, and calculating ambient light intensity from the plurality of measurements where the time period between the power transition from ON to OFF and the power transition from OFF to ON is less than time period for stabilizing LDR light measurement.