A communication method for centralized power supply mode of LED lights
A technology of centralized power supply and LED lights, which is applied to the layout of electric light circuits, electric light sources, lighting devices, etc., can solve the problems of limited information volume, large road loss, and difficulty in popularization, and achieve the effect of high reliability requirements
Active Publication Date: 2016-03-30
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0007] The power supply in the centralized power supply mode can carry 30 to 50 single lights, and the longest distance can reach 300 meters. The electromagnetic environment is complex and the road loss is large. It is difficult for ordinary communication methods to adapt to this harsh environment; it is difficult to use isolation, amplification and other technologies. method, it makes the communication system complex, high cost, difficult to popularize
[0008] (2) Practical and economic issues
[0009] The communication technology that provides communication services for centralized power supply requires high reliability of the communication method, but the amount of information transmitted is limited, so there is a large room for cost reduction
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Embodiment Construction
[0024] This embodiment is a communication method in centralized power supply mode for LED lamps.
[0025] refer to Figure 3-Figure 6 , A data transmission device that realizes communication between a high-power voltage source and multiple remote LED lamps, including the master control side bidirectional thyristor optocoupler sending circuit / receiving circuit, that is, the part placed inside the voltage source, and the controlled side bidirectional thyristor Optocoupler sending circuit / receiving circuit, that is, part and synchronous pulse generation circuit placed inside each lamp.
[0026] The bidirectional thyristor optocoupler sending circuit of the master control side is composed of the I / O port of the master microcontroller and the thyristor optocoupler RC1, and the receiving circuit is composed of the I / O port of the master microcontroller and the thyristor optocoupler RC2 ; The controlled side bidirectional thyristor optocoupler transmission circuit is composed of the...
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The invention provides a communication method and a communication device of an LED (Light Emitting Diode) lamp centralized power supply mode. Under the premise of ensuring the reliability, bidirectional half-duplex communication between a power source as a master control party and each LED lamp as a secondary party in an LED lamp centralized power supply system is realized by the most concise narrow-band communication method; after the LED power source system is electrified, the master control party / controlled party automatically communicates according to the set communication rule, and respective data are sent to the opposite party in a digital pulse sequence mode; meanwhile, the used devices are fewer, so that the cost is reduced; if the loads of each power source at most comprise 50 lamps, and the 50 lamps can be completely inspected for a round within 30 seconds by adopting the highly reliable communication mode provided by the invention; high reliability and low cost are realized by adopting the communication method with high reliability requirement and small information amount; due to the adoption of the communication method of the centralized power supply mode, the synchronization between the power source and the lamps is realized, and the synchronization among different power sources in the same supply network is also realized.
Description
technical field [0001] The invention relates to a communication method and device between a power supply of an LED lighting system with centralized power supply and terminal LED lamps, in particular a method for exchanging information between a high-power voltage source and a plurality of terminal LED lamps using narrow-band high reliability information. Background technique [0002] As we all know, LED lighting belongs to green lighting and has attracted widespread attention at home and abroad. However, since the LED lamp is a cold light source, there is no heat radiation, and it depends entirely on the radiation of the lamp body, and the thermal stress often exceeds the standard, which will not only affect the service life of the LED lamp, but also reduce its reliability. A new power supply method in which the power supply is separated from the lamp is proposed. It solves the problem of "mutual baking" between the power supply and the lamp, and significantly improves the ...
Claims
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IPC IPC(8): H05B37/02
Inventor 羊彦张红玲景占荣
Owner NORTHWESTERN POLYTECHNICAL UNIV