CN111614272B - Centralized power supply type load driving method and system - Google Patents
Centralized power supply type load driving method and system Download PDFInfo
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- CN111614272B CN111614272B CN202010560702.0A CN202010560702A CN111614272B CN 111614272 B CN111614272 B CN 111614272B CN 202010560702 A CN202010560702 A CN 202010560702A CN 111614272 B CN111614272 B CN 111614272B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 34
- 230000009466 transformation Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
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- 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
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
-
- 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
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- 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
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a centralized power supply type load driving method and system, wherein the load driving system comprises a power adapter, a load unit and a PWM unit; the power adapter comprises an AC input interface, a conversion control board and a DC output interface; the load unit is connected with a DC output interface of the power adapter through a power connection wire; the PWM unit comprises a first PWM module and a second PWM module, wherein the first PWM module is connected in parallel with one end of the power connection wire, which is connected with the power adapter, and the second PWM module is connected in parallel with the other end of the power connection wire, which is connected with the load unit; the first PWM module is connected with the power adapter, and the second PWM module is connected with the first PWM module. Through interaction of the first PWM module and the second PWM module, power required by the current power grid access load unit during working can be accurately calculated, and then the power adapter is controlled to output total current with corresponding size, so that overall power of the power grid is flexibly controlled.
Description
Technical Field
The invention relates to the field of power supply systems, in particular to a centralized power supply type load driving method and system.
Background
With the continuous development of LED plant illumination technology, various illumination modes have higher and higher requirements on a driving power supply. In practical applications, it is often desirable to provide a lighting system with higher lighting efficiency, larger and more uniform illumination area, lower failure rate, lower cost, and more intelligent lighting. To meet the above requirements, centralized power supply is currently a widely recognized and effective means.
The centralized power supply system is to drive and supply a plurality of different load units (such as LED lamps) from the same power supply. In a centralized power supply system, an AC-DC constant voltage module is adopted as a primary drive at the front end to output a constant voltage, and n DC-DC constant current modules are adopted as a secondary drive at the rear end to supply power to the working characteristics of the LED lamp. The existence of the two-stage circuit severely limits the working efficiency of the whole system, and when dimming is involved, the two-stage circuit can only operate on the back-end DC-DC module one by one, so that the complexity of a circuit and the instability of signals are increased.
Disclosure of Invention
Therefore, a technical scheme of centralized power supply type load driving is needed to solve the problems of low working efficiency, complex circuit and the like of the existing centralized power supply type.
In order to achieve the above object, the present invention provides a centralized power supply type load driving system, which includes a power adapter, a load unit, and a PWM unit;
The power adapter comprises an AC input interface, a conversion control board and a DC output interface; the AC input interface is connected with the DC output interface through the conversion control board, and the conversion control board is used for converting the AC voltage into the DC voltage;
The load unit is connected with a DC output interface of the power adapter through a power connection wire;
The PWM unit comprises a first PWM module and a second PWM module, wherein the first PWM module is connected in parallel with one end of the power connection wire, which is connected with the power adapter, and the second PWM module is connected in parallel with the other end of the power connection wire, which is connected with the load unit;
The first PWM module is connected with the power adapter, and the second PWM module is connected with the first PWM module.
As an alternative embodiment, the number of the load units is a plurality, and each load unit corresponds to one second PWM module; the different load units are connected in parallel, and the second PWM module is connected in parallel to a power supply connecting wire between the corresponding load unit and the power supply adapter.
As an optional embodiment, the first PWM module includes a first isolation transformer acquisition circuit and a first MCU module, where the first isolation transformer acquisition circuit includes a first isolation circuit, a first transformer circuit, and a first rectifier circuit;
the first isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through;
The first transformation signal is used for carrying out reduction processing on the alternating current signal passing through the isolation circuit, and the first rectification circuit is used for rectifying the reduced alternating current signal and transmitting the rectified signal to the first MCU module.
As an optional embodiment, the second PWM module includes a second isolation transformer acquisition circuit and a second MCU module, and the second isolation transformer acquisition circuit includes a second isolation circuit and a second transformer circuit;
the first isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through;
The first transformation signal is used for amplifying the alternating current signal passing through the isolation circuit and transmitting the amplified signal to the second MCU module.
As an alternative embodiment, the load unit is an LED lamp.
As an optional embodiment, the LED lamp includes a lamp body and a light emitting diode, the light emitting diode is disposed in the lamp body, and a control switch for controlling the light emitting diode to be turned on or off is further disposed on the lamp body.
The inventors also provide a method of centralized power supply type load driving, the method being applied to a system of centralized power supply type load driving as described above, the method comprising the steps of:
The first PWM module receives the electric signals fed back by each second PWM module, counts the number of the load units which are currently connected according to the electric signals fed back by each second PWM module, and calculates the total power required by all the load units when working according to the number of the load units which are currently connected;
The first PWM module sends a starting control signal to the power adapter so that the power adapter outputs total current with corresponding magnitude according to the total power magnitude required by all load units in working states.
As an alternative embodiment, the method comprises:
After the power adapter outputs a total current of a corresponding magnitude according to the total power magnitude required by all load units in the working state, the first PWM module no longer couples signals on the power connection line.
Unlike the prior art, the centralized power supply type load driving method and system related to the scheme comprise a power adapter, a load unit and a PWM unit; the power adapter comprises an AC input interface, a conversion control board and a DC output interface; the load unit is connected with a DC output interface of the power adapter through a power connection wire; the PWM unit comprises a first PWM module and a second PWM module, wherein the first PWM module is connected in parallel with one end of the power connection wire, which is connected with the power adapter, and the second PWM module is connected in parallel with the other end of the power connection wire, which is connected with the load unit; the first PWM module is connected with the power adapter, and the second PWM module is connected with the first PWM module. Through interaction of the first PWM module and the second PWM module, power required by the current power grid access load unit during working can be accurately calculated, and then the power adapter is controlled to output total current with corresponding size, so that overall power of the power grid is flexibly controlled.
Drawings
Fig. 1 is a schematic circuit diagram of a centralized power supply type load driving system according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a first PWM module according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a second PWM module according to an embodiment of the present invention;
Fig. 4 is a flowchart of a centralized power supply type load driving system according to an embodiment of the present invention.
Reference numerals:
10. A power adapter;
11. A load unit;
12. a first PWM module; 121. a first demodulation circuit chip; 122. a first modulation circuit chip;
13. A second PWM module; 131. a first demodulation circuit chip; 132. and a second modulation circuit chip.
Detailed Description
In order to describe the technical content, constructional features, achieved objects and effects of the technical solution in detail, the following description is made in connection with the specific embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, a schematic circuit diagram of a centralized power supply type load driving system according to an embodiment of the invention is shown. The load driving system comprises a power adapter 10, a load unit 11 and a PWM unit;
The power adapter 10 includes an AC input interface, a conversion control board, and a DC output interface; the AC input interface is connected with the DC output interface through the conversion control board, and the conversion control board is used for converting the AC voltage into the DC voltage;
the load unit 11 is connected with a DC output interface of the power adapter 10 through a power supply connecting wire;
the PWM unit comprises a first PWM module 12 and a second PWM module 13, the first PWM module 12 is connected in parallel to one end of the power connection wire connected with the power adapter 10, and the second PWM module 13 is connected in parallel to the other end of the power connection wire connected with the load unit 11;
The first PWM module 12 is connected to the power adapter 10, and the second PWM module 13 is connected to the first PWM module 12.
In the practical application process, the AC input end of the power adapter 10 is connected with the zero line and the live line, the AC is converted into dc by the power adapter 10, and is connected with the load unit 11 through the power positive line and the power negative line, so as to supply power to the load unit 11. The first PWM module 12 is connected in parallel to one end of the power positive line and the power negative line, the second PWM module 13 is connected in parallel to the other end of the power positive line and the power negative line, the first PWM module 12 is arranged close to the power adapter 10, and the second PWM module 13 is arranged close to the load unit 11.
When the power grid is connected, the first PWM module 12 counts the number of load units 11 connected to the power grid according to the signals fed back by the second PWM module 13, and after obtaining the current power sum (the power sum is equal to the sum of the powers required by the work of each load unit 11), the first PWM module 12 provides a start signal for the power adapter 10 (i.e. the AC-DC module), and controls the power adapter 10 to output the total current required by the back load unit 11, thereby flexibly controlling the overall power. Meanwhile, the first PWM module 12 is not operated after the power adapter 10 (i.e., AC-DC module) is started. The system is safe and efficient, and the number of the load units 11 required by the rear end can be flexibly adjusted according to the actual application condition under the condition that no additional line is added, so that the requirements of different application scenes are met.
In some embodiments, the number of the load units 11 is plural, and each load unit 11 corresponds to one second PWM module 13; the different load units 11 are connected in parallel, and the second PWM module 13 is connected in parallel to a power connection line between the corresponding load unit 11 and the power adapter 10. In short, each load unit 11 has a second PWM module 13 corresponding to it for monitoring the power required by the operating state of the load unit 11, and when the power is obtained, the second PWM module 13 sends a signal containing the power to the first PWM module 12.
After the first PWM module 12 receives the power sent by each second PWM module 13, it gathers and counts the total power required by the operation of each connected load unit 11 in the current power grid, and sends a control signal to the power adapter 10, so that the power adapter 10 outputs a total current corresponding to the total power. When the number of the load units 11 is adjusted, the total power counted by the first PWM module 12 is also adjusted, and the total current outputted by the control power adapter 10 is also adaptively adjusted. Therefore, the number of the load units 11 required by the back end can be flexibly adjusted in practical application without adding additional lines, and the overall power of the power grid can be flexibly controlled.
In some embodiments, the load unit 11 is an LED lamp. The LED lamp comprises a lamp body and a light emitting diode, wherein the light emitting diode is arranged in the lamp body, and a control switch for controlling the light emitting diode to be turned on or off is further arranged on the lamp body. The load units 11 can be quickly turned on or turned off by controlling the switch, so that the number of the load units 11 connected to the whole power grid is controlled, and the requirements of different application scenes are met. Of course, in other embodiments, the load unit 11 may be other light emitting elements.
In certain embodiments, the first PWM module 12 comprises a first isolation transformer acquisition circuit comprising a first isolation circuit, a first transformer circuit, and a first rectifier circuit, and a first MCU module; the first isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through; the first transformation signal is used for carrying out reduction processing on the alternating current signal passing through the isolation circuit, and the first rectification circuit is used for rectifying the reduced alternating current signal and transmitting the rectified signal to the first MCU module.
As shown in fig. 2, a circuit diagram of the first PWM module 12 according to an embodiment of the present invention is shown. The first MCU module includes a first demodulation circuit chip 121 and a first modulation circuit chip 122. The first demodulation circuit chip 121 may be implemented as a chip of model LM567, and the first modulation circuit chip 122 may be implemented as a chip of model NE 555.
The purpose of modulation is to convert the analog or digital signal to be transmitted into a signal suitable for channel transmission, which means that the baseband signal (source) is converted into a bandpass signal of very high frequency relative to the baseband frequency, which is called modulated signal, and the baseband signal is called modulated signal. Modulation may be achieved by causing the high frequency carrier to change the amplitude, phase or frequency of the carrier as the amplitude of the signal changes. The modulation procedure is used at the transmitting end of the communication system. At the receiving end, the modulated signal is restored to the original signal to be transmitted, i.e. the baseband signal is extracted from the carrier wave for processing and understanding by the intended recipient (sink), a process called demodulation.
The capacitors C4, C5, and C6 (i.e. "first isolation circuit") in the circuit shown in fig. 2 are used for isolating the dc signal and letting the ac signal pass, while the isolation transformer T2 (i.e. "first transformation circuit") is used for further isolating the signal of the MCU module from the current of the load unit 11 to avoid interference, and simultaneously performing reduction processing on the signal, and then the electrical signal is limited by the series resistor R5 and the bridge rectifiers D1 to D4 (i.e. "first rectification circuits") connected in parallel, so as to ensure the stability of the electrical signal entering the MCU module.
The first PWM module 12 receives the feedback signals from the second PWM module 13 after sending signals through LED +/-connection lines (i.e., positive and negative connection lines of the power supply), counts the power required by all current load units 11 according to the feedback signals of all second PWM modules 13, and outputs accurate PWM signals to the AC-DC module according to the power required by all current load units 11, so as to adjust the maximum current output by the AC-DC module, thereby flexibly controlling the overall power. When the AC-DC module is fully started, the MCU module no longer couples signals on the LED +/-connection (i.e., the positive and negative connection of the power supply) to avoid interfering with the normal use of the load unit 11.
In some embodiments, the second PWM module 13 includes a second isolation transformer acquisition circuit and a second MCU module, and the second isolation transformer acquisition circuit includes a second isolation circuit and a second transformer circuit;
The first isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through; the first transformation signal is used for amplifying the alternating current signal passing through the isolation circuit and transmitting the amplified signal to the second MCU module.
As shown in fig. 3, a circuit diagram of the second PWM module 13 according to an embodiment of the present invention is shown. The second MCU module includes a second demodulation circuit chip 131 and a second modulation circuit chip 132. The second demodulation circuit chip 131 may be implemented as a chip of model LM567, and the second modulation circuit chip 132 may be implemented as a chip of model NE 555.
In the second isolation transformer acquisition circuit, the capacitors C1, C2 and C3 (namely a second isolation circuit) are used for communicating alternating current signals to LED +/-connecting lines (namely positive and negative connecting lines of a power supply), meanwhile, direct current components in the circuit are prevented from affecting the second MCU module and the LED +/-lines, the isolation transformer T1 (namely a second transformation circuit) is used for amplifying the alternating current signals, meanwhile, the MCU signals are isolated from the currents of the LED lamp (namely the load unit 11) to avoid interference, the purity of MCU electric signals is ensured, and the safety requirements are met. The second MCU module is composed of NE555, LM567 chip and its peripheral circuit, forming modulation circuit and demodulation circuit. When the second PWM module 13 collects the signal from LED +/-, it demodulates the signal and sends a contracted signal containing the power demand through the modulation circuit, and feeds back to the first MCU module through the LED +/-line. After the first MCU module receives the feedback signals of the second PWM modules 13, the overall power required by the load unit 11 in the power grid is counted.
As shown in fig. 4, the present inventors also provide a centralized power supply type load driving method applied to the centralized power supply type load driving system as described above, the method comprising the steps of:
Firstly, entering step S401, the first PWM module receives the electric signals fed back by each second PWM module, counts the number of load units which are currently connected according to the electric signals fed back by each second PWM module, and calculates the total power required by all load units when working according to the number of the load units which are currently connected;
and then, step S402 is performed, the first PWM module sends a starting control signal to the power adapter, so that the power adapter outputs total current with corresponding magnitude according to the total power magnitude required by all load units in working states.
Preferably, in order to avoid interfering with the normal operation of the load unit 11, the method comprises: when the power adapter 10 outputs a total current of a corresponding magnitude according to the total power magnitude required when all load units 11 are in an operating state, the first PWM module 12 stops operating. The first PWM module 12 is deactivated specifically includes: the first MCU module does not decouple signals on the positive and negative connecting lines of the power supply.
The invention discloses a centralized power supply type load driving method and system, wherein the load driving system comprises a power adapter, a load unit and a PWM unit; the power adapter comprises an AC input interface, a conversion control board and a DC output interface; the load unit is connected with a DC output interface of the power adapter through a power connection wire; the PWM unit comprises a first PWM module and a second PWM module, wherein the first PWM module is connected in parallel with one end of the power connection wire, which is connected with the power adapter, and the second PWM module is connected in parallel with the other end of the power connection wire, which is connected with the load unit; the first PWM module is connected with the power adapter, and the second PWM module is connected with the first PWM module. Through interaction of the first PWM module and the second PWM module, power required by the current power grid access load unit during working can be accurately calculated, and then the power adapter is controlled to output total current with corresponding size, so that overall power of the power grid is flexibly controlled.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the statement "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal device that includes the element. Further, herein, "greater than," "less than," "exceeding," and the like are understood to not include the present number; "above", "below", "within" and the like are understood to include this number.
While the embodiments have been described above, other variations and modifications will occur to those skilled in the art once the basic inventive concepts are known, and it is therefore intended that the foregoing description and drawings illustrate only embodiments of the invention and not limit the scope of the invention, and it is therefore intended that the invention not be limited to the specific embodiments described, but that the invention may be practiced with their equivalent structures or with their equivalent processes or with their use directly or indirectly in other related fields.
Claims (5)
1. A centralized power supply type load driving system, which is characterized by comprising a power adapter, a load unit and a PWM unit;
The power adapter comprises an AC input interface, a conversion control board and a DC output interface; the AC input interface is connected with the DC output interface through the conversion control board, and the conversion control board is used for converting the AC voltage into the DC voltage;
The load unit is connected with a DC output interface of the power adapter through a power connection wire;
The PWM unit comprises a first PWM module and a second PWM module, wherein the first PWM module is connected in parallel with one end of the power connection wire, which is connected with the power adapter, and the second PWM module is connected in parallel with the other end of the power connection wire, which is connected with the load unit;
the first PWM module is connected with the power adapter, and the second PWM module is connected with the first PWM module;
The number of the load units is multiple, and each load unit corresponds to one second PWM module; the second PWM module is connected in parallel with a power supply connecting wire between the corresponding load unit and the power supply adapter;
The first PWM module comprises a first isolation transformer acquisition circuit and a first MCU module, and the first isolation transformer acquisition circuit comprises a first isolation circuit, a first transformer circuit and a first rectifier circuit;
the first isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through;
the first transformation circuit is used for carrying out reduction processing on the alternating current signals passing through the isolation circuit, and the first rectification circuit is used for rectifying the reduced alternating current signals and transmitting the rectified signals to the first MCU module;
the second PWM module comprises a second isolation voltage transformation acquisition circuit and a second MCU module, and the second isolation voltage transformation acquisition circuit comprises a second isolation circuit and a second voltage transformation circuit;
The second isolation circuit is used for isolating direct current signals from the power supply connecting wire and allowing alternating current signals to pass through;
The second transformation circuit is used for amplifying the alternating current signal passing through the isolation circuit and transmitting the amplified signal to the second MCU module.
2. The concentrated power load drive system of claim 1, wherein the load unit is an LED light fixture.
3. The concentrated power type load driving system according to claim 2, wherein the LED lamp comprises a lamp body and a light emitting diode, the light emitting diode is arranged in the lamp body, and a control switch for controlling the light emitting diode to be turned on or off is further arranged on the lamp body.
4. A concentrated power load driving method, wherein the method is applied to the concentrated power load driving system as claimed in any one of claims 1 to 3, the method comprising the steps of:
The first PWM module receives the electric signals fed back by each second PWM module, counts the number of the load units which are currently connected according to the electric signals fed back by each second PWM module, and calculates the total power required by all the load units when working according to the number of the load units which are currently connected;
The first PWM module sends a starting control signal to the power adapter so that the power adapter outputs total current with corresponding magnitude according to the total power magnitude required by all load units in working states.
5. The concentrated power load driving method according to claim 4, wherein the method comprises:
After the power adapter outputs a total current of a corresponding magnitude according to the total power magnitude required by all load units in the working state, the first PWM module no longer couples signals on the power connection line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010560702.0A CN111614272B (en) | 2020-06-18 | 2020-06-18 | Centralized power supply type load driving method and system |
| PCT/CN2021/082926 WO2021253908A1 (en) | 2020-06-18 | 2021-03-25 | Centralized power supply-based load drive method, and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010560702.0A CN111614272B (en) | 2020-06-18 | 2020-06-18 | Centralized power supply type load driving method and system |
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| CN111614272A CN111614272A (en) | 2020-09-01 |
| CN111614272B true CN111614272B (en) | 2024-07-19 |
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| CN111614272B (en) * | 2020-06-18 | 2024-07-19 | 福建省中科生物股份有限公司 | Centralized power supply type load driving method and system |
| CN117881036B (en) * | 2023-12-29 | 2024-08-23 | 广东柏科电源有限公司 | Control method of driving power supply |
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| CN212305165U (en) * | 2020-06-18 | 2021-01-05 | 福建省中科生物股份有限公司 | Concentrated power supply type load driving system |
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| CN102300355B (en) * | 2010-06-25 | 2013-12-25 | 英飞特电子（杭州）股份有限公司 | Light emitting diode (LED) dimming system |
| CN204439749U (en) * | 2015-02-02 | 2015-07-01 | 深圳市中科源电子有限公司 | Ac parameter monitoring aging testing system and finished product light fixture aging testing system |
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| CN111165075B (en) * | 2017-08-01 | 2022-09-13 | 克莱沃内斯公司 | Intelligent switch equipment and central control system and power supply thereof |
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| CN111614272B (en) * | 2020-06-18 | 2024-07-19 | 福建省中科生物股份有限公司 | Centralized power supply type load driving method and system |
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2020
- 2020-06-18 CN CN202010560702.0A patent/CN111614272B/en active Active
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2021
- 2021-03-25 WO PCT/CN2021/082926 patent/WO2021253908A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212305165U (en) * | 2020-06-18 | 2021-01-05 | 福建省中科生物股份有限公司 | Concentrated power supply type load driving system |
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| WO2021253908A1 (en) | 2021-12-23 |
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