CN103096588A - Automatic adjusting power outputting system for light-emitting diode (LED) street lamp - Google Patents
Automatic adjusting power outputting system for light-emitting diode (LED) street lamp Download PDFInfo
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- CN103096588A CN103096588A CN2013100017084A CN201310001708A CN103096588A CN 103096588 A CN103096588 A CN 103096588A CN 2013100017084 A CN2013100017084 A CN 2013100017084A CN 201310001708 A CN201310001708 A CN 201310001708A CN 103096588 A CN103096588 A CN 103096588A
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
An automatic adjusting power outputting system for a light-emitting diode (LED) street lamp relates to the field of LED street lamp display control devices and comprises a weather state monitoring circuit, a sequential control circuit, a data shifting register, a data latch, a grayscale data reading circuit, a luminance adjusting circuit, a color correction circuit, a non-liner correction circuit, a luminance control circuit, a data comparator circuit, a data parallel output circuit, a clock counter and the like. A weather state monitor circuit is connected with the sequential control circuit and the data shifting register, and the data shifting register is connected with the grayscale data reading circuit, the luminance adjusting circuit, the color correction circuit and the non-liner correction circuit. The grayscale data reading circuit, the luminance adjusting circuit, the color correction circuit and the non-liner correction circuit are respectively connected with the luminance control circuit. The luminance adjusting circuit is connected with the data comparator, and the data comparator is connected with a parallel output circuit. The automatic adjusting power outputting system for LED street lamp solves the problem that an existing street lamp control device cannot achieve an optimal energy-saving effect.
Description
Technical field
The present invention relates to LED street lamp display control unit field, especially a kind of LED street lamp display control program.
Background technology
At present, for reaching energy-conservation purpose, generally adopt the LED street lamp.Street lamp, in different seasons, needs different brightness under period, weather condition, just can reach best energy-conservation purpose.Existing street lamp is controlled, and is merely able to control the street lamp time opening and closes, and can't reach energy-conservation purpose.
Summary of the invention
The invention provides the LED street lamp and automatically adjust the power output system, the invention solves the problem that existing roam lamp control device can not reach optimum energy-saving effect.
For addressing the above problem, the present invention adopts following technical scheme: the LED street lamp is adjusted the power output system automatically, comprise the state of weather observation circuit, also comprise sequential control circuit, data shift register, data latches, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparator circuit, data parallel output circuit and clock counter etc.The state of weather observation circuit is connected with sequential control circuit, data shift register, data shift register and gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected with brightness regulating circuit respectively, brightness regulating circuit is connected with data comparator, and the data comparator circuit is connected with the parallel output circuit.
Described data shift register, data latches, gradation data circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparison circuit and parallel output circuit are n group 8*2N circuit-switched data (N-O, 1,2 ...), every road output data correspond to k bit binary data (k=8 in control device, 9,10 ...).
The present invention adopts following method to show control to the LED street lamp, comprise the following steps: that (1) sequential control circuit produces the signal that sequential relationship strictly meets the cascade requirement, sequential control circuit also produces the ox latch signal simultaneously, the data comparison clock signal, above signal controlling parallel output circuit produces effective duty ratio sequential; (2) after the serial shift clock of setting, data to be displayed seals in shift register, under synchronous input and latch clock LATIN signal controlling, the data latch register is held back this control circuit and is shown data, after synchronous input and latch clock LATIN signal ended, the serial data shift register can seal in next group data to be displayed; (3) the demonstration data of holding back in latch register are through brightness regulating circuit, intednsity circuit, data comparison circuit, color correction circuit, nonlinearity correction circuit finally with the form of duty ratio in parallel output terminal display gray scale information;
Synchronous input and latch clock signal LATIN rising edge completes following action: (1), by the hungry data in the serial data shift register, walks abreast and is latched into data latches; (2) inner comparison clock counter O reset;
Parallel output terminal is made as high resistant or high level after synchronous input and latch clock signal LATIN rising edge signal zero clearing, when arriving, first serial input shift clock signal CLKIN rising edge starts to become low level, low level continues how many shift clock, by the k bit data value sealed in, determined, after the clock of setting, the output Lookup protocol is high resistant or high level;
Control circuit starts serial from first rising edge of serial input shift clock signal CLKIN and move into to show data, when transmitting, first transmits the last point data, and every is transmitted low bit after first transmitting high data bit, after the clock of setting, transmitted data;
The middle part of the rising edge aligned data signal live part of serial shift clock signal clk IN, the rising edge of directly link shift clock signal CLKOUT is aimed at the middle part of outputting data signals live part, cascade shift clock signal CLKOUT, directly link latch clock signal LATOUT, the synchronous outputting data signals DATAOUT of directly link phase relation and serial input shift clock signal CLKIN, synchronizes input and latch clock signal LATIN, synchronous input data signal DATAIN phase relation ... cause;
Gradation data circuit and brightness regulating circuit form the kbit data, k=I+J, (I > 8), first 1 is gradation data, rear J position is the brightness adjustment data, the gradation data of front I position produces 256 grades of corresponding relations to 21 grades of gray scales by the state of weather observation circuit, and rear J position brightness adjustment completes 21 grades of brightness corresponding relations by control circuit.
Effect of the present invention is: the LED display control circuit comprises n group 8*2N road r1 ~ 8 ~ 2N row output control signal altogether, the exportable 21 grades of duty cycle signals of each row output control signal, and row output control signal is Low level effective; The duty ratio relation of each row output, can be controlled by the line control unit circuit, and the difference by the kbit data imported into, produce different duty ratios, and the LED luminosity difference between display pixel point can be adjusted, and the whole-screen brightness of display screen can be adjusted.
At present, tentatively be decided to be 256 grades of gray scale to 4096 grade nonlinear correspondence relation.16 grades of single-point brightness adjustment abilities, 50% of single-point height adjustment range peak brightness.Without the single-point brightness adjustment time, the brightness under 256 grades of gray scale to 1024 grade nonlinear correspondence relation of whole screen can be adjusted to 1/8 of peak brightness.The adjustable rank of whole-screen brightness is 32 grades.
Adopt this display control circuit, without the peripheral driver serially concatenated, support multiple scanning display mode (16 line scannings to full static latch), have simple in structure, move characteristics easily.
The accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present invention.
Embodiment
Below with best embodiment, the present invention is described in detail
.
As shown in Figure 1, LED street lamp display control unit, comprise the state of weather observation circuit, also comprise sequential control circuit, data shift register, data latches, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparator circuit, data parallel output circuit and clock counter etc.The state of weather observation circuit is connected with sequential control circuit, data shift register, data shift register and gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected with brightness regulating circuit respectively, brightness regulating circuit is connected with data comparator, and the data comparator circuit is connected with the parallel output circuit.Described data shift register, data latches, gradation data circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparison circuit and parallel output circuit are n group 8*2N road.
The control method of LED street lamp display control unit, comprise the following steps: that (1) sequential control circuit produces the signal that sequential relationship strictly meets the cascade requirement, sequential control circuit also produces latch signal simultaneously, the data comparison clock signal, above signal controlling parallel output circuit produces effective duty ratio sequential; (2) after the serial shift clock of setting, data to be displayed seals in shift register, in synchronous input and latch clock LATIN signal controlling, foretell., the data latch register is held back this control circuit and is shown data, after synchronous input and latch clock LATIN signal ended, the serial data shift register can seal at one group of data to be displayed; (3) the demonstration data of holding back in latch register are through brightness ' regulating circuit, intednsity circuit, data comparison circuit, finally with the form of duty ratio in parallel output terminal display gray scale information.Synchronous input and latch clock signal LATIN rising edge completes following action: (1), by the hungry data in the serial data shift register, walks abreast and is latched into data latches; (2) inner comparison clock counter O reset.
Parallel output terminal is made as high resistant or high level after synchronous input and latch clock signal LATIN rising signals zero clearing, when arriving, first serial input shift clock signal CLKIN rising edge starts to become low level, low level continues how many shift clock, by the k bit data value sealed in, determined, after 21 clocks, the output Lookup protocol is high resistant or high level.
Control circuit starts serial from first rising edge of serial input shift clock signal CLKIN and move into to show data, when transmitting, first transmits the last point data, and every is transmitted low bit after first transmitting high data bit, transmitted data after 21 clocks.
The middle part of the rising edge aligned data signal live part of serial shift clock signal clk IN, the rising edge of directly link shift clock signal CLKOUT is aimed at the middle part of outputting data signals live part, cascade shift clock signal CLKOUT, directly link latch clock signal LATOUT, the synchronous outputting data signals DATAOUT of directly link phase relation and serial input shift clock signal CLKIN, synchronous input and latch clock signal LATIN, synchronously input data signal DATAIN phase relation is consistent.
Gradation data circuit and brightness regulating circuit form the kbit data, front I position is gradation data, rear J position is the brightness adjustment data, the gradation data of front I position produces 256 grades of corresponding relations to 21 grades of gray scales by the state of weather observation circuit, and rear J position brightness adjustment completes 2 ' grade of brightness corresponding relation by control circuit.Take k=16 as example, with first 12, it is gradation data, with latter 4 be the brightness adjustment data, the gradation data of first 12 produces 256 grades of nonlinear correspondence relation to 4096 grades of gray scales of ox by the state of weather observation circuit, rear 4 brightness adjustments complete 16 grades of brightness corresponding relations by control circuit.
Sequential control circuit produces the signal that sequential relationship strictly meets the cascade requirement (as: serial shift output cascade clock signal clk OUT walk abreast latch output signal LATOUT).Sequential control circuit also produces latch signal simultaneously.Data comparison clock signals etc., above signal controlling parallel output circuit produces effective duty ratio sequential.Through 21 serial displacement clocks, data to be displayed seals in shift register, and under the LATIN signal controlling, the data latch register is held back this chip and shown data (n organizes * 8*21 road), after the LATIN signal ended, the serial data shift register can seal in next group and wait the demonstration data.The demonstration data of holding back in latch register are through brightness regulating circuit, intednsity circuit, color correction circuit, nonlinearity correction circuit, data comparison circuit, finally with the form of duty ratio in parallel output terminal display gray scale information.
This circuit can support the serial data of 20MHZ to transmit, the cascade clock signal has all experienced strict sequential adjustment at every grade, the distortion of cascade clock signal duty cycle is less than 155PS, and the multi-disc cascade signal is undistorted and have consistent phase relation, and display effect obviously improves.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being amplified out thus or change are still among protection scope of the present invention.
Claims (3)
1.LED street lamp is adjusted the power output system automatically, it is characterized in that, comprise the state of weather observation circuit, also comprise sequential control circuit, data shift register, data latches, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparator circuit, data parallel output circuit and clock counter etc.; The state of weather observation circuit is connected with sequential control circuit, data shift register, data shift register and gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected, gradation data reading circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit is connected with brightness regulating circuit respectively, brightness regulating circuit is connected with data comparator, and the data comparator circuit is connected with the parallel output circuit.
2. the LED street lamp is adjusted the power output system automatically as claimed in claim 1, it is characterized in that described data shift register, data latches, gradation data circuit, brightness regulating circuit, color correction circuit, nonlinearity correction circuit, intednsity circuit, data comparison circuit and parallel output circuit are n group 8*2N circuit-switched data (N-O, 1,2 ...), every road output data correspond to k bit binary data (k=8 in control device, 9,10 ...).
3. the LED street lamp is adjusted the power output system automatically as claimed in claim 1, it is characterized in that, adopt following method to show control to the LED street lamp, comprise the following steps: that (1) sequential control circuit produces the signal that sequential relationship strictly meets the cascade requirement, sequential control circuit also produces the ox latch signal simultaneously, the data comparison clock signal, above signal controlling parallel output circuit produces effective duty ratio sequential; (2) after the serial shift clock of setting, data to be displayed seals in shift register, under synchronous input and latch clock LATIN signal controlling, the data latch register is held back this control circuit and is shown data, after synchronous input and latch clock LATIN signal ended, the serial data shift register can seal in next group data to be displayed; (3) the demonstration data of holding back in latch register are through brightness regulating circuit, intednsity circuit, data comparison circuit, color correction circuit, nonlinearity correction circuit finally with the form of duty ratio in parallel output terminal display gray scale information;
Synchronous input and latch clock signal LATIN rising edge completes following action: (1), by the hungry data in the serial data shift register, walks abreast and is latched into data latches; (2) inner comparison clock counter O reset;
Parallel output terminal is made as high resistant or high level after synchronous input and latch clock signal LATIN rising edge signal zero clearing, when arriving, first serial input shift clock signal CLKIN rising edge starts to become low level, low level continues how many shift clock, by the k bit data value sealed in, determined, after the clock of setting, the output Lookup protocol is high resistant or high level;
Control circuit starts serial from first rising edge of serial input shift clock signal CLKIN and move into to show data, when transmitting, first transmits the last point data, and every is transmitted low bit after first transmitting high data bit, after the clock of setting, transmitted data;
The middle part of the rising edge aligned data signal live part of serial shift clock signal clk IN, the rising edge of directly link shift clock signal CLKOUT is aimed at the middle part of outputting data signals live part, cascade shift clock signal CLKOUT, directly link latch clock signal LATOUT, the synchronous outputting data signals DATAOUT of directly link phase relation and serial input shift clock signal CLKIN, synchronizes input and latch clock signal LATIN, synchronous input data signal DATAIN phase relation ... cause;
Gradation data circuit and brightness regulating circuit form the kbit data, k=I+J, (I > 8), first 1 is gradation data, rear J position is the brightness adjustment data, the gradation data of front I position produces 256 grades of corresponding relations to 21 grades of gray scales by the state of weather observation circuit, and rear J position brightness adjustment completes 21 grades of brightness corresponding relations by control circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100017084A CN103096588A (en) | 2013-01-05 | 2013-01-05 | Automatic adjusting power outputting system for light-emitting diode (LED) street lamp |
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| CN2013100017084A CN103096588A (en) | 2013-01-05 | 2013-01-05 | Automatic adjusting power outputting system for light-emitting diode (LED) street lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI556215B (en) * | 2015-03-13 | 2016-11-01 | Large area RGB LED lighting with a drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427383A (en) * | 2002-12-06 | 2003-07-02 | 北京利亚德电子科技有限公司 | LED display screen display control device and its control method |
| CN201303448Y (en) * | 2008-11-07 | 2009-09-02 | 中国科学院广州能源研究所 | Energy-saving control circuit of LED road lamp with large power |
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- 2013-01-05 CN CN2013100017084A patent/CN103096588A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427383A (en) * | 2002-12-06 | 2003-07-02 | 北京利亚德电子科技有限公司 | LED display screen display control device and its control method |
| CN201303448Y (en) * | 2008-11-07 | 2009-09-02 | 中国科学院广州能源研究所 | Energy-saving control circuit of LED road lamp with large power |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI556215B (en) * | 2015-03-13 | 2016-11-01 | Large area RGB LED lighting with a drive |
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Application publication date: 20130508 |