scholarly journals A caching‐enabled light control scheme for aerobics video

2021 ◽  
Author(s):  
Ting Qi
Keyword(s):  
Light Control ◽  
Control Scheme

The Design of LED Streetlights Controller with Light Control Long Time-Lapse

2014 ◽  
Vol 945-949 ◽  
pp. 2555-2558
Author(s):  
Yang Li ◽  
Chen Kui
Keyword(s):  
Circuit Design ◽  
Power Saving ◽  
Time Lapse ◽  
Time Base ◽  
Light Control ◽  
Road Lighting ◽  
Control Scheme ◽  
Long Time ◽  
Half Power ◽  
Led Lights

This paper focus on the features of half power saving in city road lighting LED retrofits , presences a light control and time-lapse switch LED lights control scheme, use photoresistor, 555 time base circuit and CD4060 binary counter, realized the control circuit design. The experimental results show that the proposed scheme in this paper is simple, practical and reliable.

Evaluation of a daylight-responsive, iterative, closed-loop light control scheme

2019 ◽  
Vol 52 (2) ◽  
pp. 257-273
Author(s):  
PK Maiti ◽  
B Roy
Keyword(s):  
White Light ◽  
Laboratory Testing ◽  
Closed Loop ◽  
Light Emitting Diode ◽  
Light Control ◽  
In Situ Testing ◽  
Light Emitting ◽  
Colour Temperature ◽  
Control Scheme

In this paper an iterative, closed-loop light control scheme is proposed and evaluated by a white light emitting diode-based, daylight-responsive luminaire to follow the time-varying pattern of correlated colour temperature and illuminance of a daylight scene. The proposed control scheme functions primarily with the response signals of two RGB colour sensors, viz., a daylight sensor to monitor the daylight scene at the window plane and an internal light sensor to monitor the light scene created by the test white light emitting diode luminaire. The control scheme controls the lumen delivery of individual light emitting diode arrays of the test luminaire by adjusting the duty cycles to follow the instantaneous correlated colour temperature of daylight and at the same time to respond to the variation of window plane illuminance in the reverse pattern. Evaluation is conducted by laboratory testing and in situ testing. The maximum deviations in correlated colour temperature, illuminance and chromaticity from the required values under laboratory testing and in situ testing are found to be [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text], [Formula: see text] respectively, which establish the acceptable performance of the proposed iterative light control scheme.

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