Microcontrolled electronic gear for low wattage metal halide (MH) and high-pressure sodium (HPS) lamps

Almeida, M. S. S.; Resende, Cassius Zanetti; Simonetti, Domingos Sávio Lyrio; Vieira, J.L.F.; Almeida, P.C.A.

doi:10.1109/ias.2002.1043787

Cited by 24 publications

(2 citation statements)

References 20 publications

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“…LED is regarded as one of the competent candidates for this purpose. The traditional high pressure sodium (HPS) lamps, which are a common type for road lighting used since 1980s, need a re-strike time of 0.5-1.5 minutes for warming up [8]. In contrast, LEDs can be re-lit almost without delay.…”

Section: Led For Adaptive Road Lightingmentioning

confidence: 99%

Green Transport System: A Technology Demonstration of Adaptive Road Lighting with Giant Magnetoresistive Sensor Network for Energy Efficiency and Reducing Light Pollution

Lei

Leung

Hau

et al. 2013

AMM

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To enhance energy efficiency and reduce light pollution of overnight road lighting in suburban traffic, we propose a novel green transport system based on giant magnetoresistive (GMR) sensors. The basic principle is to detect the perturbation to the earth magnetic field by a ferrous vehicle with GMR sensors. This system can switch on the road lighting to full illumination gradually before the motor vehicle arrives and dim it out after the vehicle leaves without the driver noticing. Based on a sparse suburban road in the countryside of Hong Kong, a demonstration model was constructed to illustrate its feasibility. GMR sensors and the associated electrical energy control components including signal processors, relays, and dimmers were integrated into a complete system. The experimental result indicates that the sensing principle is feasible and the whole system can function together coherently to achieve over 90% energy saving. Such system can be scaled up to be implemented in real road conditions.

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Section: Led For Adaptive Road Lightingmentioning

confidence: 99%

Green Transport System: A Technology Demonstration of Adaptive Road Lighting with Giant Magnetoresistive Sensor Network for Energy Efficiency and Reducing Light Pollution

Lei

Leung

Hau

et al. 2013

AMM

View full text Add to dashboard Cite

show abstract

“…Then, C ig recharges through R ig . By using an appropriate transformation ratio in T ig , it is possible to impose, during the conduction time of T yig , a high voltage pulse on the lamp [5]. The main drawbacks of this circuit are a complex transformer design, the need of a fast diode and special care with the control of the switches to avoid overvoltage.…”

Section: Study Of Ignition Circuitsmentioning

confidence: 99%