Multi-channel LED Driver with PWM Dimming and Temperature Self-Protection

Hsia, Shih-Chang; Ciou, Jyun-Jia; Lai, Sheng-Yueh

doi:10.1109/iih-msp.2013.34

Cited by 3 publications

(2 citation statements)

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“…The output light will give the maximum brightness if the on time is below than 5% and perform full dim when the on-time reach above 95% as the voltage that delivered to the lamp depends on the length of the duty cycle. The previous work [14] uses PWM circuit made up from the 8-bit counter and 8-bit comparator where the input is connected to duty cycle, and the input comparator connect to counter. The concept is when the counter value is lower than value for duty cycle; the comparator will trigger the high output.…”

Section: Literature Review 21 Concept Of Dimming Systemmentioning

confidence: 99%

“…The PLC can easily control the sequences of a traffic light can operate without the need for human energy and help. Due to work system by Hsia et al [14], the automated traffic light is proposed for road user's safety while having a road construction as the PLC is used as the primary controller to change the existing manual traffic control that can lead harmful to human. The motion sensor used will locate any movement of vehicles and send the data signal to the central controller meanwhile the PLC will have an interaction with the minor system that works under PLC to proceed with the next action.…”

Section: Figure 3 Circuit Architecture Controlled By Pic Controllermentioning

confidence: 99%

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Analysis and Development of A Self-Dimming Module for Road Traffic Signals

Diyana¹,

Subramaniam²,

Esro³

et al. 2023

International Journal of Recent Technology and Applied Science

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Nowadays, we often see more and more of the various types of lights in urban areas, especially in road areas, either regarding the use of traffic lights or streetlights that serve as guides and signals to maintain road safety. Typically, the lamps use LED-based lamps as they can increase the rate of high savings. This LED conceptual light helps reduce energy wastage by using less power and reducing the consumption of heat and is suitable for day-to-day operation. The addition of ordinary LEDs to self-dimming systems based on the intensity of light around is more likely to increase the savings rate and is more environment-friendly. The scope of this research includes analytics data from the use of standard traffic lights and LED signal lights that are self-concept in dimmer systems. This research uses the IoT concept that is applied to the traffic system and uses solar energy which is indeed renewable natural energy and can affect the green earth concept to the traffic control system on the road.

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Section: Literature Review 21 Concept Of Dimming Systemmentioning

confidence: 99%

Section: Figure 3 Circuit Architecture Controlled By Pic Controllermentioning

confidence: 99%