WO2013040736A1 - Système de lampe d'éclairage public à diodes électroluminescentes fonctionnant sur courant continu à haute tension, et procédé de réalisation correspondant - Google Patents

Système de lampe d'éclairage public à diodes électroluminescentes fonctionnant sur courant continu à haute tension, et procédé de réalisation correspondant Download PDF

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Publication number
WO2013040736A1
WO2013040736A1 PCT/CN2011/002008 CN2011002008W WO2013040736A1 WO 2013040736 A1 WO2013040736 A1 WO 2013040736A1 CN 2011002008 W CN2011002008 W CN 2011002008W WO 2013040736 A1 WO2013040736 A1 WO 2013040736A1
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WO
WIPO (PCT)
Prior art keywords
high voltage
signal
power supply
led street
street lamp
Prior art date
Application number
PCT/CN2011/002008
Other languages
English (en)
Chinese (zh)
Inventor
张雅萍
李旭亮
Original Assignee
东莞勤上光电股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2011203496867U external-priority patent/CN202197442U/zh
Priority claimed from CN201110277122.1A external-priority patent/CN102395231B/zh
Priority claimed from CN2011102771236A external-priority patent/CN102427639A/zh
Priority claimed from CN 201120349814 external-priority patent/CN202190449U/zh
Application filed by 东莞勤上光电股份有限公司 filed Critical 东莞勤上光电股份有限公司
Publication of WO2013040736A1 publication Critical patent/WO2013040736A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits

Definitions

  • the present invention relates to an LED lighting power supply system, and in particular to a DC high voltage power supply LED street light system and an implementation method thereof.
  • a DC high voltage power supply LED street light system and an implementation method thereof.
  • DC high-voltage power supply that is, in the form of centralized power supply, directly delivers 250V high-voltage direct current to the LED street light, and the LED street light does not need to be equipped with a separate switching power supply. So far, there has not been a control method specifically for this DC high voltage power supply LED street light. When it is necessary to control such an LED street lamp, only a method for the AC-powered LED street lamp can be used, and a control system is added outside the street lamp power supply system, which requires installing a signal receiving device on each LED street lamp. And a device that centrally controls these signal receiving and executing devices. This type of approach creates an increase in labor and material costs, and in the future maintenance, it is also necessary to put maintenance into these devices.
  • the invention provides a DC high voltage power supply LED street lamp system, which comprises: a central DC power supply rejection for outputting different high voltage signals;
  • the LED street lamp is connected to the central DC power supply through a wire for receiving different high voltage signals, and displaying different display states according to different high voltage signals.
  • the different high voltage signals include a first high voltage signal and a second high voltage signal, and the duration of the first high voltage signal rejected by the central DC power source is different from the duration of the second high voltage signal rejected by the central DC power source.
  • the different high voltage signal includes a first high voltage signal, a first high voltage to a second high voltage linear change signal, a second high voltage signal, and a second high voltage to a first high voltage linear change signal, the first high voltage signal,
  • the durations of the first high voltage to the second high voltage linear change signal, the second high voltage signal, and the second high voltage to the first high voltage linear change signal are not completely the same.
  • the central DC power supply machine includes a main control chip, a digital-to-analog conversion module, and a power supply module that are electrically connected in sequence.
  • the LED street lamp comprises a voltage conversion module, an analog-to-digital conversion module, a single-chip microcomputer, a constant current circuit and an LED light source which are electrically connected in sequence, wherein the voltage conversion circuit converts the high-voltage analog signal transmitted from the electric wire into a low-voltage analog signal, The low-voltage analog signal is sent to the analog-to-digital conversion module, and the analog-to-digital conversion module extracts the analog signal through analog-to-digital sampling, and converts the analog signal into a digital signal, which is sent to the single-chip microcomputer, and the single-chip microcomputer analyzes the digital signal, and then drives the constant signal.
  • the flow circuit controls the display state of the LED light source.
  • the invention provides a method for realizing a DC high voltage power supply LED street lamp system, which comprises:
  • the LED street light receives different high voltage signals that the central DC power supply refuses to output, and displays different display states according to different high voltage signals.
  • the different high voltage signals include a first high voltage signal and a second high voltage signal, and the duration of the first high voltage signal rejected by the central DC power source is different from the duration of the second high voltage signal rejected by the central DC power source.
  • the different high voltage signal includes a first high voltage signal, a first high voltage to a second high voltage linear change signal, a second high voltage signal, and a second high voltage to a first high voltage linear change signal, the first high voltage signal,
  • the durations of the first high voltage to the second high voltage linear change signal, the second high voltage signal, and the second high voltage to the first high voltage linear change signal are not completely the same.
  • the LED street lamp comprises a voltage conversion module, an analog-to-digital conversion module, a single-chip microcomputer, a constant current circuit and an LED light source which are electrically connected in sequence, wherein the voltage conversion circuit converts the high-voltage analog signal transmitted from the electric wire into a low-voltage analog signal, The low-voltage analog signal is sent to the analog-to-digital conversion module, and the analog-to-digital conversion module extracts the analog signal through analog-to-digital sampling, and converts the analog signal into a digital signal, which is sent to the single-chip microcomputer, and the single-chip microcomputer analyzes the digital signal, and then drives the constant signal.
  • the flow circuit controls the display state of the LED light source.
  • the central DC power source is mutually connected to the LED street lamp through a connection structure of wires of the bus or the star network.
  • the present invention controls the power supply and display state of the LED street lamp by applying different high-voltage signals, and has the characteristics of power supply and control integration, greatly saving the new construction and maintenance cost of the LED lighting system, and further improving the overall life. And reliability.
  • BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described in detail below with reference to the drawings and specific embodiments.
  • 1 is a schematic diagram of an application system architecture of a specific embodiment of the present invention
  • FIG. 2 is a schematic diagram of a control flow corresponding to the LED street lamp system shown in FIG. 1;
  • FIG. 3 is a timing diagram of an output electrical signal of the DAC module in FIG.
  • FIG. 4 is a timing diagram of the output electrical signal of the power module of FIG. 1;
  • FIG. 5 is a schematic diagram of an internal electrical structure of a specific embodiment of the present invention.
  • FIG. 6 is a schematic diagram of timings of acquiring an electrical signal by the single chip microcomputer of FIG. 5;
  • FIG. 7 is a schematic diagram of the single chip of FIG. 5 processing an electrical signal according to a state machine model;
  • FIG. 8 is a schematic diagram of an internal electrical structure of a second embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1 , an application system of an LED street lamp to which the specific embodiment of the present invention is applied includes a central DC power supply rejection, a plurality of DC-powered LED street lamps, and a wire connecting the central DC power supply to the DC-powered LED street lamp. among them:
  • the central DC power supply rejects: the controller and at least one power module
  • DC power supply LED street light includes: LED light source, voltage conversion circuit, analog-to-digital conversion (ADC) module, single-chip microcomputer, constant current circuit;
  • ADC analog-to-digital conversion
  • the central DC power source is mutually connected to the LED street lamp through a connection structure of a bus or a star network wire.
  • the controller of the central DC power supply rejection includes: an instruction receiving device, a main control chip (MCU), and a digital to analog conversion (DAC) module. Its working principle is:
  • the instruction receiving device is configured to receive an external dimming command and send the command to the MCU; the MCU analyzes and processes the dimming command, obtains dimming command information, and sends the dimming command information to the DAC module, and the DAC module sets the dimming command information Converted into an analog signal sent to each power module, the power module will make its own output change voltage at a predetermined frequency (with analog signal) according to the analog signal received from the DAC module, and the voltage with the analog signal will be supplied through the wire. It is delivered to each DC-powered LED street light.
  • DC-powered LED street light The voltage conversion circuit converts the analog signal transmitted from the wire from a high-voltage state to a low-voltage state.
  • the ADC module It also converts the high-voltage analog signal transmitted from the wire into a low-voltage analog signal, which is then sent to the ADC module, and the ADC module is sampled by AD.
  • the analog signal is extracted, and the signal is converted into a digital signal and sent to the single chip microcomputer, and the single chip computer analyzes the digital signal to control the constant current circuit; the ADC module is also called a voltage sampling module.
  • step 303 judging whether an external dimming instruction that the instruction receiving device forwards to the MCU through the serial port is received? Go to the next step, otherwise return to step 302);
  • the MCU extracts the external dimming command, processes it in bytes, sends the data to the DAC module according to the receiving format of the DAC module, and causes the DAC module to output an analog signal as shown in FIG. 3 to the power module.
  • T0, tl, t2, t3, and t4 represent different time periods, respectively.
  • the DAC module sequentially outputs the following voltage values: The DAC module first outputs a voltage of 5V, and the duration is t0; the DAC module outputs an output from 5V to 4.4V.
  • the time varies linearly, the time required for this process is tl; the DAC module re-outputs the duration of t0, the voltage is 4.4V (4.4V is low voltage, and the low voltage duration is t2 indicates transmission)
  • the data is binary number 0, the low voltage duration is t4, indicating that the data to be transmitted is a binary number 1); the DAC module outputs a voltage that varies linearly from 4.4V to 5V over time, this time is tl; ....
  • the DAC module outputs 6 low voltages of 4.4V with a duration of t2 according to this rule, and then outputs 2 low voltages of 4.4V with a duration of t 4 according to the same rule; the DAC module re-outputs from 4.4V to 5V.
  • the DAC module has transferred one byte of data (8 data bits) to the power module. If the MCU of the controller determines that the command signal has not been sent yet, the next byte will be transmitted as described above. Otherwise, the controller's MCU will let the DAC module continue to output 5V.
  • the waveform shown in Figure 3 indicates that the data to be transmitted to the power module by the MCU of the controller is hexadecimal 0x03, which is the binary number 0000 0011. In actual application, the MCU of the controller will be based on the data to be transmitted. To determine the number and order of '0' and T during transmission to determine the duration of the 4.4V low voltage, t2 and t4.
  • the power module When receiving the signal output by the DAC module, the power module changes its own output voltage at the same time, and the output voltage of the power module is proportional to the output voltage of the DAC module.
  • the 5V voltage output by the DAC module corresponds to the output voltage of the power module.
  • the 4.4V voltage output from the DAC module corresponds to the output voltage of the power module is 220 V, and the voltage is transmitted to the LED street lamp through the wire, as shown in Figure 4.
  • an LED street lamp first converts the DC220V-DC250V high-voltage signal received from the power module into a 2.7V-3.3V low-voltage signal, and then delivers it to the ADC module for processing.
  • the ADC module adopts timing sampling mode, and the sampling period is T. Converting the collected analog signal into a digital signal and handing it to the MCU for processing. After processing the specified number of data bytes according to the convention, the MCU operates the LED light source module by operating the constant current driving circuit to complete the signal receiving. Perform the operation.
  • an LED street lamp includes a voltage conversion circuit, an ADC module, a single chip microcomputer, a constant current circuit, and an LED light source.
  • the voltage conversion circuit and the central DC power source are electrically connected by wires. Its working principle is:
  • the voltage conversion circuit of the LED street lamp first converts the DC220V-DC250V high-voltage signal received from the power module rejected by the central DC power supply into a 2.7V-3.3V low-voltage signal, and then delivers it to the ADC module for processing, and the ADC module adopts a timing sampling method.
  • the sampling period is T, and the collected analog signal is converted into a digital signal and sent to the single-chip microcomputer for processing.
  • the ADC module collects the M voltage value and gives it to the MCU (M>20, which is an integer variable).
  • the MCU sorts the M voltage values from small to large, and removes 4 maximum and 4 minimum values.
  • the average value of the lower (M-8) voltage values is stored in the array VOL[0], the array VOL is a one-dimensional array of length 4, which is used to store the average voltage value of the microcontroller during processing. According to this rule, the MCU obtains three average voltage values and stores them in VOL[l], VOL[2] and VOL[3].
  • the single-chip microcomputer obtains the average value of these voltages in the above manner and stores it in the array variable VOL[3].
  • the microcontroller updates the value of the VOL array in this way every 1 sample period. And compare these four values: If the difference between the four elements of the array VOL is within the error range, the MCU determines that it is "voltage steady state"; if VOL[0]-VOL[l]>Differ, VOL[ l]-VOL[2]>Differ,
  • the MCU uses the state machine idea based on the 0 or 1 state of the signal to finally analyze the control signal:
  • the single chip microcomputer controls the LED light source by operating the constant current circuit to complete the operation after the signal is received.
  • the LED street lamp of the invention can also output "0" or "1” after being processed according to the corresponding voltage change characteristics at the receiving end according to other agreed voltage variation rules on the electric wire.
  • the LED street lamp of the second embodiment of the present invention includes a voltage conversion circuit, an ADC module, a single chip microcomputer, a PWM dimmer, a constant current circuit, and an LED light source.
  • the voltage conversion circuit of the LED street lamp first converts the DC220V-DC250V high-voltage signal received from the power module into a 2.7V-3.3V low-voltage signal, and then delivers it to the ADC module for processing.
  • the ADC module adopts the timing sampling method, and the sampling period is T,
  • the collected analog signal is converted into a digital signal and sent to the single-chip microcomputer for processing.
  • the single-chip microcomputer sends the dimming signal to the PWM dimmer after being parsed according to the agreed law; the constant current circuit drives the LED light source according to the PWM dimmer output control signal.
  • the present invention controls the power supply and display state of the LED street lamp by applying different high-voltage signals, and has the characteristics of power supply and control integration, greatly saving the new construction and maintenance cost of the LED lighting system, and further improving the overall life. And reliability.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

La présente invention concerne un système de lampe d'éclairage public à diodes électroluminescentes fonctionnant sur courant continu à haute tension. Ce système comprend: une armoire centrale d'alimentation électrique en courant continu destinée à produire en sortie différents signaux en haute tension; et une lampe d'éclairage publique à diodes électroluminescentes raccordée à l'armoire centrale d'alimentation en courant continu par l'intermédiaire d'un fil de façon, d'une part à recevoir différents signaux en haute tension, et d'autre part à présenter différent états d'affichage en fonction des différents signaux en haute tension. La présente invention constitue une alimentation électrique à commande intégrée permettant d'économiser fortement les coûts d'installation et de maintenance dans le cas d'un système d'éclairage à diodes électroluminescentes, et d'en améliorer la durée de vie globale et la fiabilité.
PCT/CN2011/002008 2011-09-19 2011-11-30 Système de lampe d'éclairage public à diodes électroluminescentes fonctionnant sur courant continu à haute tension, et procédé de réalisation correspondant WO2013040736A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN2011203496867U CN202197442U (zh) 2011-09-19 2011-09-19 一种led路灯和控制装置
CN201120349686.7 2011-09-19
CN201110277123.6 2011-09-19
CN201110277122.1A CN102395231B (zh) 2011-09-19 2011-09-19 直流高压供电led路灯系统及其控制信号传输接收方法
CN201110277122.1 2011-09-19
CN2011102771236A CN102427639A (zh) 2011-09-19 2011-09-19 直流高压供电led路灯调光系统及其信号传输接收方法
CN 201120349814 CN202190449U (zh) 2011-09-19 2011-09-19 一种led中央直流电源机柜
CN201120349814.8 2011-09-19

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Publication Number Publication Date
WO2013040736A1 true WO2013040736A1 (fr) 2013-03-28

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PCT/CN2011/002008 WO2013040736A1 (fr) 2011-09-19 2011-11-30 Système de lampe d'éclairage public à diodes électroluminescentes fonctionnant sur courant continu à haute tension, et procédé de réalisation correspondant

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103747588A (zh) * 2014-01-15 2014-04-23 西北工业大学 一种led灯集中供电模式的通信方法及装置

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Publication number Priority date Publication date Assignee Title
CN1436438A (zh) * 2000-11-15 2003-08-13 皇家菲利浦电子有限公司 用于照明控制网络的协议增强及为此目的的通信接口
CN201341253Y (zh) * 2008-11-20 2009-11-04 北京巨数数字技术开发有限公司 一种控制装置及故障自动报告系统
CN101778514A (zh) * 2010-02-09 2010-07-14 浙江金基电子技术有限公司 一种led路灯能量变换和节能控制的装置
EP2278861A1 (fr) * 2004-01-14 2011-01-26 Tridonic GmbH & Co KG Alimentation centrale utilisant plusieurs circuits à courant continu
CN102017803A (zh) * 2008-02-22 2011-04-13 三杰科技有限公司 监察和控制led路灯的设备和系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1436438A (zh) * 2000-11-15 2003-08-13 皇家菲利浦电子有限公司 用于照明控制网络的协议增强及为此目的的通信接口
EP2278861A1 (fr) * 2004-01-14 2011-01-26 Tridonic GmbH & Co KG Alimentation centrale utilisant plusieurs circuits à courant continu
CN102017803A (zh) * 2008-02-22 2011-04-13 三杰科技有限公司 监察和控制led路灯的设备和系统
CN201341253Y (zh) * 2008-11-20 2009-11-04 北京巨数数字技术开发有限公司 一种控制装置及故障自动报告系统
CN101778514A (zh) * 2010-02-09 2010-07-14 浙江金基电子技术有限公司 一种led路灯能量变换和节能控制的装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103747588A (zh) * 2014-01-15 2014-04-23 西北工业大学 一种led灯集中供电模式的通信方法及装置

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