CN102395231A - Direct current (DC) high-voltage power supply LED (light-emitting diode) street lamp system and control signal transmitting and receiving method thereof - Google Patents
Direct current (DC) high-voltage power supply LED (light-emitting diode) street lamp system and control signal transmitting and receiving method thereof Download PDFInfo
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- CN102395231A CN102395231A CN2011102771221A CN201110277122A CN102395231A CN 102395231 A CN102395231 A CN 102395231A CN 2011102771221 A CN2011102771221 A CN 2011102771221A CN 201110277122 A CN201110277122 A CN 201110277122A CN 102395231 A CN102395231 A CN 102395231A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Abstract
The invention relates to a direct current (DC) high-voltage power supply LED (light-emitting diode) street lamp system and a control signal transmitting and receiving method thereof, wherein the system comprises a central DC power source machine cabinet and an LED street lamp connected with an electric wire of the machine cabinet. The method comprises the following step: the central DC power source machine cabinet supplies power through the electric wire with a first high voltage; the central DC power source machine cabinet supplies power through the electric wire with a second high voltage and a first continuous duration and transmits data '1'; and the central DC power source machine cabinet supplies power through the electric wire with the second high voltage and a second continuous duration and transmits data '0'. Compared with the prior art, the system and the control signal transmitting and receiving method thereof have the characteristic of power supply and control integration, the establishing and maintaining cost of an LED illumination system is greatly saved, the service life of the whole system is prolonged, and the reliability of the system is improved.
Description
Technical field
The present invention relates to the LED illumination, be specifically related to a kind of high direct voltage power supply LED road lamp system and control signal transmission method of reseptance thereof.
Background technology
Compare with conventional road lamp, the LED street lamp has long service life, advantage such as energy-conservation.LED street lamp in the past all adopts interchange (AC) power supply, and every Switching Power Supply that the LED street lamp all needs at least one to be used for AC is converted into direct current (DC) could let LED street lamp operate as normal.But because this power supply life-span itself is short, regular damage, this has brought a difficult problem of safeguarding just for the LED street lamp, and brief introduction has influenced the useful life of LED street lamp.
High direct voltage is supplied power, and just adopts the form of centrally connected power supply, carries the 250V high voltage direct current directly for the LED street lamp, and just need not to be equipped with independent Switching Power Supply on the LED street lamp.So far, also there is not to occur special control mode to this high direct voltage power supply LED street lamp.When needs are controlled this LED street lamp; Can only adopt the way that in the past is directed against the alternating-current power supply LED street lamp; Outside the street lamp power supply, road lamp power supply system, increasing control system realizes; This just need install a signal receiving device on every LED street lamp, and these signals of centralized control receive and the equipment of final controlling element.This type mode has caused the increase of manpower and material cost, in the while maintenance afterwards, also need safeguard strength for these device inputs.
In addition; China's invention " LED controller for road lamp "; Application number 200910105774.X; Disclose the LED controller for road lamp of the control mode of a kind of employing general packet radio service (GPRS) and purple honeybee (ZigBee) wireless communication transmission data, realize LED street lamp Long-distance Control, it also is a kind of of autonomous control system and network.
Summary of the invention
The technical issues that need to address of the present invention are, a kind of high direct voltage power supply LED road lamp system and control signal transmission method of reseptance thereof are provided, need not special arrangement and circuit realization Long-distance Control.
First technical problem of the present invention solves like this: a kind of high direct voltage power supply LED road lamp system is provided, comprises:
Central authorities' direct current power supply cabinet; Be electrically connected with the LED street lamp through electric wire; Comprise the main control chip, D/A converter module and the power module that are electrically connected successively; Be used for first high pressure to the LED street lamp power supply, road lamp power supply, perhaps continue duration to LED street lamp power supply, road lamp power supply and transmission data " 1 ", perhaps continue duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " with second high pressure and second with second high pressure and first;
The LED street lamp comprises the voltage transformation module, voltage sample module and the single-chip microcomputer that are electrically connected successively, is used for according to the said transmission Data Control self that receives luminous.
Another technical problem of the present invention solves like this: a kind of high direct voltage power supply LED road lamp system control signal transmission method of reseptance is provided, may further comprise the steps:
Central authorities' direct current power supply cabinet through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 1 " through electric wire with second high pressure and first;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " through electric wire with second high pressure and second.
In a preferred embodiment of the present invention, also comprise: between each transmission data, central direct current power supply cabinet in setting guard time length through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply; Each byte can one of correspondence specifically be instructed, and distance is arranged between the byte, and distance (guard time length) is also arranged between each data.
In a preferred embodiment of the present invention, it is bus or Star network that the syndeton of said electric wire includes, but are not limited to.
In a preferred embodiment of the present invention, also comprise: the processor of central direct current power supply cabinet is touched power module that modular converter controls central direct current power supply cabinet with first high pressure or the output of second high pressure through the number of central direct current power supply cabinet.
In a preferred embodiment of the present invention, also comprise: the processor of central direct current power supply cabinet obtains LED street lamp control command through external command receiving interface or external command receiving system.
In a preferred embodiment of the present invention, also comprise: the processor of central direct current power supply cabinet calls corresponding LED street lamp control command according to the control program of storage inside operation.
In a preferred embodiment of the present invention, also comprise: said LED street lamp detects through built-in voltage and said transmission data are obtained in the timing unit reception.
In a preferred embodiment of the present invention, also comprise: said LED street lamp detects sampling unit through built-in voltage and single-chip microcomputer receives, handles and obtain said transmission data.
In a preferred embodiment of the present invention, may further comprise the steps:
The processor of central authorities' direct current power supply cabinet obtains or calls LED street lamp control command;
The processor of central authorities' direct current power supply cabinet is touched power module that modular converter controls central direct current power supply cabinet with first high pressure or the output of second high pressure through the number of central direct current power supply cabinet;
Central authorities' direct current power supply cabinet through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 1 " through electric wire with second high pressure and first;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " through electric wire with second high pressure and second;
Said LED street lamp receives through built-in voltage detecting and timing unit or built-in voltage detecting sampling unit and single-chip microcomputer and obtains corresponding said transmission data.
High direct voltage power supply LED road lamp system of the present invention and control signal transmission method of reseptance thereof; Adopt voltage and time to change the remote transmission control signal; Compared with prior art; Have the characteristics of power supply and control unification, save the newly-built and maintenance cost of LED illuminator greatly, further also improved bulk life time and reliability.
Description of drawings
Further the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is the LED road lamp system structural representation of the specific embodiment of the invention;
Fig. 2 is the electric structural representation of LED street lamp among Fig. 1;
Fig. 3 is the corresponding control flow sketch map of LED road lamp system shown in Figure 1;
Fig. 4 is a DAC module output signal of telecommunication sequential sketch map among Fig. 1;
Fig. 5 is a power module output signal of telecommunication sequential sketch map among Fig. 1;
Fig. 6 is that single-chip microcomputer obtains signal of telecommunication sequential sketch map among Fig. 2;
Fig. 7 is the sketch map that single-chip microcomputer is handled the signal of telecommunication among Fig. 2 according to state machine model.
Embodiment
As shown in Figure 1, the high direct voltage power supply LED road lamp system of the specific embodiment of the invention comprises central direct current power supply cabinet, a plurality of direct current supply LED street lamp, and the electric wire that connects central direct current power supply cabinet and direct current supply LED street lamp, wherein:
1, central direct current power supply cabinet comprises: controller, at least one power module;
2, direct current supply LED street lamp comprises: led light source module, voltage conversion circuit, ADC module, MCU, constant-current circuit;
3, electric wire: directly adopt existing alternating current wires to get final product, make things convenient for street lamp engineered.
Controller comprises: command reception device, main control chip (MCU), digital-to-analogue conversion (DAC) module.Its operation principle is:
The external command receiving system is used to receive external control signal, and this signal is sent to MCU through serial ports; The MCU analytic signal; And give the DAC module according to DAC module predetermined data form timed sending data; The DAC module will become analog signal to send to power module from the data transaction that MCU receives; Power module is carried through wires to each direct current supply LED street lamp according to the output voltage of this control signal change self.
Direct current supply LED street lamp: voltage transformation module becomes low-voltage analog signal with the high pressure simulation conversion of signals that transmission in the electric wire comes; Give analog-to-digital conversion (ADC) module; The ADC module extracts analog signal through the AD sampling, and this conversion of signals is become digital signal, sends to single-chip microcomputer; After single-chip microcomputer is analyzed this digital signal, the control constant-current circuit; The ADC module is claimed the voltage sample module again.
As shown in Figure 2, the LED street lamp of the specific embodiment of the invention comprises voltage transformation module, ADC module, single-chip microcomputer, constant flow module and led light source, and said voltage transformation module is electrically connected with the high direct voltage power line; The ADC module is claimed the voltage sample module again.Its operation principle is:
The voltage conversion circuit of LED street lamp at first will convert the 2.7V-3.3V low-voltage signal to from the DC220V-DC250V high-voltage signal that power module receives, and give ADC resume module then, and the ADC module adopts the mode of timing sampling; Sampling period is T; Become the analog signal conversion that collects digital signal to give single-chip microcomputer and handle, single-chip microcomputer is handled by the agreement rule like this: LED street lamp powered on moment, and the detected voltage of ADC module is high level; Therefore; Single-chip microcomputer is provided with signal=1, and signal is the variable of a Boolean type, and being used for identifying single-chip microcomputer is low level state or high level state at the magnitude of voltage that processing ADC module collects.The ADC module gather M magnitude of voltage give single-chip microcomputer (M>20; Be an integer variable); Single-chip microcomputer is pressed sequence arrangement from small to large with this M magnitude of voltage, and removes 4 maximums and 4 minimum values, and the mean value of getting remaining (M-8) inferior magnitude of voltage deposits array VOL [0] in; Array VOL is that a length is 4 one-dimension array, is used for preserving the average voltage level of single-chip microcomputer in the processing signals process.Single-chip microcomputer obtains 3 average voltage level again by this rule, deposits VOL [1], VOL [2] and VOL [3] respectively in.
After 1 sampling period T, single-chip microcomputer makes VOL [0]=VOL [1], VOL [1]=VOL [2]; VOL [2]=VOL [3], the ADC module is gathered magnitude of voltage once more M time, gives single-chip microcomputer; Single-chip microcomputer obtains the mean value of these voltages according to aforesaid way, deposits aray variable VOL [3] in.Every through 1 sampling period, single-chip microcomputer just upgrades the value of VOL array in this manner.And these four values relatively: if the difference between 4 elements of array VOL within error range, single-chip microcomputer then judges it is " voltage plateau "; If VOL [0]-VOL [1]>Differ; VOL [1]-VOL [2]>Differ; VOL [2]-VOL [3]>Differ (value of Differ will be decided according to concrete t1 time value), single-chip microcomputer then is judged to be " voltage trailing edge state ", at this moment; Signalization flag bit Signal_Flag=0, Signal_Flag are the temporary variables that single-chip microcomputer is provided with for the identification signal level changes; If VOL [1]-VOL [0]>Differ, VOL [2]-VOL [1]>Differ, VOL [3]-VOL [2]>Differ, single-chip microcomputer then is judged to be " voltage rising edge state ", and signalization flag bit Signal_Flag=1.
In said process, the value of acquiescence signal was 1 when single-chip microcomputer powered on, and single-chip microcomputer can be judged the value of signal according to " voltage plateau ", " voltage trailing edge state " and " voltage rising edge state " afterwards.If single-chip microcomputer has judged it is " voltage plateau ", this moment, the value of Signal_Flag was 0, showed that this voltage plateau is just to have passed through a voltage trailing edge, and therefore, single-chip microcomputer is judged signal=0; If single-chip microcomputer is when having judged the voltage plateau, the value of siganl_Flag is 1, shows that this voltage plateau is just to have passed through a voltage rising edge, and therefore, single-chip microcomputer is judged signal=1.Single-chip microcomputer can draw waveform as shown in Figure 6 according to 0 or 1 state of signal.
In the following process, single-chip microcomputer utilizes state machine thought according to 0 or 1 state of signal, and final analysis goes out control signal:
Acquiescence siganl=1 when single-chip microcomputer powers on, state=1, state are the variablees that single-chip microcomputer is provided with for the step in the id signal analytic process.As shown in Figure 7, be 0 when single-chip microcomputer detects siganl from state=1, and the time that state 1 continues meet the demands, then make state=2, and empty the data buffer zone; When single-chip microcomputer detects signal from state=2 is 1, then makes state=3, and the time that this moment, single-chip microcomputer can continue according to state 2, judgement is data bit 0 or data bit 1, and deposits the data buffer zone in; Single-chip microcomputer is the duration of rule judgement state 2 according to this, obtains data bit, when 8 states 2 of the program running to the in the single-chip microcomputer, if detect siganl=1, then gets the hang of 4.Afterwards the duration of tracking mode 4, when this time surpasses certain value, show that data byte for transmission finishes, single-chip microcomputer is handled this byte.
Single-chip microcomputer is operated the led light source module through the operation constant-current drive circuit handle the data byte of specifying number according to above-mentioned rule after, accomplish the executable operations after signal receives.
As shown in Figure 3, the LED road lamp system control signal transmission method of reseptance of the specific embodiment of the invention, idiographic flow may further comprise the steps:
301) beginning that powers on;
302) MCU of central direct current power supply cabinet control power module is exported with DC250V;
303) judge whether to receive that the command reception device is transmitted to the external dimmer command signal of MCU through serial ports? Be to get into next step, otherwise return step 302);
304) MCU extracts this signal, handles by byte, sends the data to the DAC resume module according to the reception form of DAC module, and makes DAC module output analog signal as shown in Figure 4 give power module.
Wherein,
t0≥1.5P，t1=0.6P+200mP，t2=0.5P+200mP，t3=0.5P+200mP,t4=1.5P+200mP
Annotate: P is the time of a unit, and representative value is 1P=1 second.
Like this, MCU is to control signal of power module output the time, and can make the DAC module export following magnitude of voltage successively: the DAC module is the voltage of output 5V earlier, and the duration is t0; The DAC module export again from 5V to 4.4V, be the magnitude of voltage of linear change in time, the time of this process need is t1; DAC module output duration again is t0's; Magnitude of voltage is that (4.4V voltage is low-voltage for the voltage of 4.4V; The low-voltage duration is that the data that t2 indicates to transmit are binary number 0, and the low-voltage duration is that the data that t4 indicates to transmit are binary number 1); The DAC module is exported the voltage that from 4.4V to 5V, is linear change in time again, and this time is t1; The DAC module is according to after this rule output 6 duration 4.4V low-voltage that is t2, again according to same rule, and the 4.4V low-voltage that to export 2 duration be t4; The DAC module is exported the voltage that from 4.4V to 5V, continues variation again, and after voltage was raised to 5V, output duration was the 5V high voltage of t0.At this moment, the DAC module has been transferred to power module with the data (8 data bit) of a byte.Do not finish if the MCU decision instruction signal of controller also sends, then can carry out the transmission of next byte according to aforesaid way.Otherwise the MCU of controller can let the DAC module continue the voltage of output 5V.
(annotate: waveform shown in Figure 4 representes that the data that the MCU of controller will be transferred to power module are hexadecimal number 0x03; Just binary number 0,000 0011; When practical application; The MCU of controller can be according to the data that will transmit, when confirming transmission ' 0 ' with ' 1 ' number and order, thereby confirm the duration t2 and the t4 of 4.4V low-voltage.）
305) power module can change the output voltage of self simultaneously when receiving the signal of above-mentioned DAC module output, and the output voltage relation in direct ratio of the output voltage of power module and DAC module.The output voltage of the 5V voltage corresponding power module of DAC module output is 250V, and the output voltage of the 4.4V voltage corresponding power module of DAC module output is 220V, and voltage is transferred to the LED street lamp through electric wire, and is specifically as shown in Figure 5.
306) voltage conversion circuit of LED street lamp at first will convert the 2.7V-3.3V low-voltage signal to from the DC220V-DC250V high-voltage signal that power module receives; Give the ADC resume module then; The ADC module adopts the mode of timing sampling; Sampling period is T, becomes the analog signal conversion that collects digital signal to give single-chip microcomputer and handles, and single-chip microcomputer is after rule is handled the data byte of specifying number by appointment; Operate the led light source module through the operation constant-current drive circuit, accomplish the executable operations after signal receives.
Claims (10)
1. a high direct voltage power supply LED road lamp system is characterized in that, comprising:
Central authorities' direct current power supply cabinet; Be electrically connected with the LED street lamp through electric wire; Comprise the main control chip, D/A converter module and the power module that are electrically connected successively; Be used for first high pressure to the LED street lamp power supply, road lamp power supply, perhaps continue duration to LED street lamp power supply, road lamp power supply and transmission data " 1 ", perhaps continue duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " with second high pressure and second with second high pressure and first;
The LED street lamp comprises the voltage transformation module, voltage sample module and the single-chip microcomputer that are electrically connected successively, is used for according to the said transmission Data Control self that receives from said electric wire luminous.
2. a high direct voltage power supply LED road lamp system control signal transmission method of reseptance is characterized in that, may further comprise the steps:
Central authorities' direct current power supply cabinet through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 1 " through electric wire with second high pressure and first;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " through electric wire with second high pressure and second.
3. control signal according to claim 1 transmission method of reseptance is characterized in that, also comprises: between each transmission data, central direct current power supply cabinet in setting guard time length through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply.
4. control signal transmission method of reseptance according to claim 1 is characterized in that the syndeton of said electric wire is bus or Star network.
5. control signal transmission method of reseptance according to claim 1; It is characterized in that, also comprise: the processor of central direct current power supply cabinet is touched power module that modular converter controls central direct current power supply cabinet with first high pressure or the output of second high pressure through the number of central direct current power supply cabinet.
6. control signal transmission method of reseptance according to claim 1 is characterized in that also comprise: the processor of central direct current power supply cabinet obtains LED street lamp control command through external command receiving interface or external command receiving system.
7. control signal transmission method of reseptance according to claim 1 is characterized in that also comprise: the processor of central direct current power supply cabinet calls corresponding LED street lamp control command according to the control program of storage inside operation.
8. control signal transmission method of reseptance according to claim 1 is characterized in that, also comprises: said LED street lamp detects through built-in voltage and said transmission data are obtained in the timing unit reception.
9. control signal transmission method of reseptance according to claim 1 is characterized in that, also comprises: said LED street lamp detects sampling unit through built-in voltage and single-chip microcomputer receives, handles and obtain said transmission data.
10. control signal transmission method of reseptance according to claim 1 is characterized in that, may further comprise the steps:
The processor of central authorities' direct current power supply cabinet obtains or calls LED street lamp control command;
The processor of central authorities' direct current power supply cabinet is touched power module that modular converter controls central direct current power supply cabinet with first high pressure or the output of second high pressure through the number of central direct current power supply cabinet;
Central authorities' direct current power supply cabinet through electric wire with first high pressure to the LED street lamp power supply, road lamp power supply;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 1 " through electric wire with second high pressure and first;
Central authorities' direct current power supply cabinet continues duration to LED street lamp power supply, road lamp power supply and transmission data " 0 " through electric wire with second high pressure and second;
Said LED street lamp receives through built-in voltage detecting and timing unit or built-in voltage detecting sampling unit and single-chip microcomputer and obtains corresponding said transmission data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110277122.1A CN102395231B (en) | 2011-09-19 | 2011-09-19 | Direct current (DC) high-voltage power supply LED (light-emitting diode) street lamp system and control signal transmitting and receiving method thereof |
| PCT/CN2011/002008 WO2013040736A1 (en) | 2011-09-19 | 2011-11-30 | Dc high voltage power supply led street lamp system and realization method thereof |
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| CN201110277122.1A CN102395231B (en) | 2011-09-19 | 2011-09-19 | Direct current (DC) high-voltage power supply LED (light-emitting diode) street lamp system and control signal transmitting and receiving method thereof |
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| CN102395231B CN102395231B (en) | 2014-11-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103763833A (en) * | 2014-01-23 | 2014-04-30 | 中达电通股份有限公司 | Method and system for controlling LED street lamps based on power supply line |
| CN104113970A (en) * | 2014-08-06 | 2014-10-22 | 刘欢艳 | Sub-control device and sub-control unit comprising same |
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| CN101778514A (en) * | 2010-02-09 | 2010-07-14 | 浙江金基电子技术有限公司 | LED street lamp energy conversion and energy saving control device |
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| CN102395231B (en) | 2014-11-26 |
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Effective date of registration: 20171103 Address after: 523565 Guangdong city of Dongguan province Changping Zhen Heng Jiang Jiang Xia Heng Industrial Road, set up a file Patentee after: KINGSUN OPTOELECTRONIC CO., LTD. Address before: 523000 Guangdong city of Dongguan province Changping Zhen Heng Jiang set up a file Patentee before: Dongguan Qinshang Photoelectric Co., Ltd. |