CN208337961U - Linearity light adjusting intelligent digital power supply - Google Patents

Linearity light adjusting intelligent digital power supply Download PDF

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Publication number
CN208337961U
CN208337961U CN201820035457.XU CN201820035457U CN208337961U CN 208337961 U CN208337961 U CN 208337961U CN 201820035457 U CN201820035457 U CN 201820035457U CN 208337961 U CN208337961 U CN 208337961U
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China
Prior art keywords
unit
control unit
output
dimming control
main loop
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Expired - Fee Related
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CN201820035457.XU
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Chinese (zh)
Inventor
严飞飞
陈乾君
刘明生
候成新
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SHANGHAI BINY ELECTRIC Co Ltd
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SHANGHAI BINY ELECTRIC Co Ltd
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Priority to CN201820035457.XU priority Critical patent/CN208337961U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The utility model relates to a kind of linearity light adjusting intelligent digital power supplys characterized by comprising main loop of power circuit unit, the main loop of power circuit unit have input terminal and output end;Dimming control unit, the linearity light adjusting control unit include that PWM output adjusts unit, and the dimming control unit adjusts the output power of main loop of power circuit by controlling PWM output duty cycle;The dimming control unit receives the PWM duty cycle of external control signal setting and is modified to the PWM duty cycle of external control signal setting;The acquiring electric energy information unit is used to acquire the input terminal of the main loop of power circuit and the energy data of output end;Including voltage and current data.The utility model is the physical characteristic for removing relay and utilizing principle, realizes firmware Sofe Switch function, solves the problems, such as spike problem when booting, respond not in time, service life on-off times problem etc., substantially prolong the service life problem of the present apparatus.

Description

Linearity light adjusting intelligent digital power supply
Technical field
The utility model relates to linearity light adjusting intelligent digital power supplys.
Background technique
Power supply is common electrical equipment control device, but power supply in the prior art has the following aspects: 1. the Technology application of the industrial lightings such as current electric ballast, driving power, Switching Power Supply, industrial transformers driving, all with mould Quasi- light regulating technology, controllable silicon light modulation, sectional dimming technology, these technologies are easy to be influenced by the variation loaded cannot be good Linearity light adjusting that in other words cannot well accurately is dimmed, linear cannot be dimmed.2. current driving power, Switching Power Supply solution Static light regulating technology is released, i.e., will not realize linear adjustment because load variation, environmental change, user are accustomed to variation.3. driving at present Dynamic power supply, Switching Power Supply are all to have per se with transformer secondary power supply technique, this purpose defect be to allow engagement positions be in In machine state, the key service life software such as electrolytic capacitor is constantly in working condition, greatly reduces the service life of engagement positions.4. mesh Preceding driving power, Switching Power Supply are all that all will cause without acquiring electric energy information and analysis and processing unit will not be according to environment Serial regulation is realized in transformation.5. current driving power, Switching Power Supply are all to realize opening for major loop using relay switch function Function is closed, it is that peak value is higher to answering force request to improve before rectifying below that relay, which belongs to inductive element in unlatching, and relay is deposited On-off times and response time not in time the shortcomings that, so that the service life of driving power is reduced significantly and has been responded load supplying Timeliness.6, control mode is not flexible in different seasons and special weather, scattered lamps and lanterns and wide region point Cloth brings the inconvenience of control management, and control interface is not intuitive, and energy waste is serious, and failure inspection is costly, maintenance and dimension Repair trouble.
Utility model content
The purpose of this utility model first is that in order to overcome the shortcomings in the prior art, providing one kind can linear regulation circuit The linearity light adjusting digital power of output.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
Linearity light adjusting intelligent digital power supply characterized by comprising
Main loop of power circuit unit, the main loop of power circuit unit have input terminal and output end;
Dimming control unit, the linearity light adjusting control unit include that PWM output adjusts unit, the dimming control unit The output power of main loop of power circuit is adjusted by controlling PWM output duty cycle;The dimming control unit receives external control letter Number setting PWM duty cycle and to external control signal setting PWM duty cycle be modified, the correction value=setting value × Transfer efficiency × power factor;
The transfer efficiency calculation formula is η=Po/Pin, wherein " η " represents the transfer efficiency of power supply,
" Po " represents output power, and calculation formula is Po=Uo × Io, and " Uo " represents output voltage, and " Io " represents output electricity Stream, calculates " Po " by the product of the two;Pin " represents input power, and calculation formula is Pin=Ui × Iin, and " Ui " is represented Input voltage, " Iin " represent input current, calculate " Pin " by the product of the two;
Power factor can determine according to input terminal voltage and current values;
Acquiring electric energy information unit, the acquiring electric energy information unit be used for acquire the main loop of power circuit input terminal and The energy data of output end;Including voltage and current data;
It dims computing unit, the light modulation computing unit and the acquiring electric energy information unit communication and is controlled with the light modulation Unit communication processed;The data of acquisition are transferred to the light modulation computing unit by the acquiring electric energy information unit, and are counted through light modulation It calculates and is transferred to dimming control unit after unit calculates, the dimming control unit is according to the calculated result received, amendment output PWM Duty ratio adjusts main loop of power circuit output.
One embodiment according to the present utility model further includes communication unit, and the communication unit is external defeated for receiving The control signal entered, and it is transferred to dimming control unit, PWM duty cycle is determined according to control signal by the dimming control unit Setting value or by dimming control unit be transferred to light modulation computing unit again by light modulation computing unit determine PWM duty cycle set Value.
One embodiment according to the present utility model is additionally provided with high pressure between the communication unit and dimming control unit Isolation drive unit.
One embodiment according to the present utility model further includes using terminal, and the using terminal passes through the communication unit It is first to be communicated with the light control unit;The using terminal be used for input control order, and be converted to control signal be conveyed to it is logical Believe unit.
One embodiment according to the present utility model further includes environmental parameter detection unit, and the environmental parameter detection is single Member is transferred to light modulation computing unit and/or dimming control unit for detecting environmental parameter, and by ambient parameter data, by dimming Computing unit and/or dimming control unit determine the PWM duty cycle setting value under the environmental parameter.
One embodiment according to the present utility model further includes Standby current supply circuit unit, the Standby power supply Circuit units are electrically connected with the main loop of power circuit unit, dimming control unit, acquiring electric energy information unit and light modulation computing unit It connects, is the main loop of power circuit unit, dimming control unit, acquiring electric energy information unit and light modulation computing unit power supply.
One embodiment according to the present utility model further includes Sofe Switch, the Sofe Switch and the dimming control unit Electrical connection, for controlling the on and off of main loop of power circuit;The dimming control unit controls the Sofe Switch work.
One embodiment according to the present utility model further includes electrical energy parameter processing unit, and the electrical energy parameter processing is single It is first to be connect with the acquiring electric energy information unit communication, it is sent out after the energy data decoding for acquiring acquiring electric energy information unit Give light modulation computing unit.
The utility model mesh is according to acquiring electric energy information unit, electrical energy parameter processing unit, digital dimming computing unit, ring Border parameter detecting unit, communication unit realize linearity light adjusting problem to do data analysis.
Standby current supply circuit unit is had inside utility model device power supply area, is usually in standby, and is cut off Main loop of power circuit circuit cuts off main loop of power circuit circuit by dimming control unit.But when environment changes, including Environment transformation, seasonal variations, illuminance variation, point transformation, wagon flow, the stream of people, temperature when changing, main loop of power circuit circuit It opens, to extend the service life of main loop of power circuit circuit.There is the utility model acquiring electric energy information unit, basis to adopt Collect input and output energy information, be sent to electrical energy parameter processing unit and handled, the data after processing are sent to Digital dimming computing unit is sent to dimming control unit after being calculated by digital dimming computing unit and executes control, purpose in order to Reach linearity light adjusting accurately to dim, improves whole efficiency;
The utility model is the physical characteristic for removing relay and utilizing principle, realizes firmware Sofe Switch function, solves out Spike problem when machine, response problem, service life on-off times problem etc. not in time, the service life for substantially prolonging the present apparatus is asked Topic.
1. utility model device can realize that linearity light adjusting calculates very well, it can accomplish accurately to control output, have reached essence True Energy Saving Control purpose;
2. the utility model realizes Sofe Switch control function, hard switching bring surge impact function is reduced;
3. the utility model main circuit is in a standby mode, when changing dynamic regulation output because environment sets out, realize Fine Energy Efficiency Ratio;
4. the intelligent control of pair LED light improves 55% fractional energy savings, 80% LED service life is improved, improves 60% energy Effect ratio;
5. dynamic incudes linear light regulating technology, reduce the energy consumption of no thin and weak man, compared with Traditional control, at least reduces by 50% CO2Discharge;
6. calculating sun set/raise time by GPS longitude and latitude and season, in the world zero setting, automatic adjustment illumination is opened Close the time;
7. failure initiative alarming, rapid GPS display positioning, maintenance maintenance is convenient, reduces by 90% human cost;
8. mobile terminal monitoring and failure notification, improve 70% work execution efficiency;
9. detection haze automatically, total solar eclipse, wagon flow, heavy rain, the environment such as dense fog carry out multiple linkage Lighting control;
10. ensure that the safety of whole system control and the safety of big data information with encryption technology.
11. multistage operations permission controls, the inquiry of historical data statistics, electrical energy measurement trend analysis, pre-payment control system.
12. when network outage, for built-in Off-line control strategy from control is transported, it is long that built-in bulk storage saves continuous data Up to 60 days.
13. can be widely applied on the intelligent control lamps and lanterns of the various scenes such as highway, common road, road;
Detailed description of the invention
Fig. 1 is that the linearity light adjusting intelligent digital power supply in the utility model refines topological structure schematic diagram.
Specific embodiment
The utility model is described in further details below in conjunction with attached drawing.
As shown in Figure 1, linearity light adjusting intelligent digital power supply comprising main loop of power circuit unit, dimming control unit 11, electricity It can information acquisition unit 1, light modulation computing unit 16, communication unit 13, environmental parameter detection unit 14, Standby current supply circuit Unit 6.
The main loop of power circuit unit has input terminal and output end;It further include SPD lightning protection unit 2, EMC electromagnetic compatibility list Member 3, rectification filtering unit 4, PFC transformation driving unit 5, LLC Half Bridge Quasi Resonant driving unit 8, output finishing control unit 9 With feedback unit 10.
The SPD lightning protection unit 2, the unit main purpose are when the digital dimming device is for open air and by thunder After hitting, the overvoltage energy that thunder and lightning generates is absorbed, is released.It is excessively electric to the operation for entering the digital dimming device simultaneously Pressure, Frequency Transient Overvoltage impact and the surge voltage entered by AC input line etc. also have absorption and the effect of releasing.The unit Play the role of that rear class electronic component is protected to lead to damage from surge over voltage.
The EMC electromagnetic compatibility unit 3, the unit can filter out the conduction for being generated from the device itself and being issued to outside Noise jamming can avoid the normal work for influencing other electronic equipments under same electromagnetic environment;Simultaneously play inhibition and decaying by The noise and signal interference that the external world generates.The unit in route common mode and DM EMI signal have it is good inhibition and decline Subtract effect.
The rectification filtering unit 4, the bridge rectifier unit mainly utilize the diode group being packaged as a whole by four At bridge realize and convert the alternating voltage for having been subjected to SPD unit and EMC unit to the DC voltage of pulsation.The DC voltage By the input voltage as PFC module unit.
The PFC converts driving unit 5, and the unit is using the circuit of BOOST topology formation to by bridge rectifier list The current signal that member enters carries out phasing, and current signal is made to follow voltage signal as far as possible, improves PF (power factor) value, with Improve utilization rate of electrical.The active PFC is made of inductance, capacitor, MOSFET, application-specific integrated circuit and related auxiliary electron component, Adjustable current waveform compensates the phase difference Current Voltage, makes final power factor up to 98% or more, while can Significantly reduce total harmonic distortion.Circuit is simple in the module, output voltage ripple very little, has remarkable advantage.In topological diagram Shown, PFC inductance L1 stores energy when MOS switch pipe Q1 is connected, and in switching tube cut-off, is inducing the right side just on inductance L1 The negative voltage in a left side, the energy stored when by conducting charge to big filter capacitor C1 by booster diode D1, export energy, PFC driving unit carries out phase compensation adjustment according to the current signal acquired on R1 during this, be finally reached to PF value into The purpose of row correction.
Voltage after the adjustment of prime PFC unit is passed through LLC resonance oscillation semi-bridge by the LLC Half Bridge Quasi Resonant driving unit 8 After topological circuit and high-frequency isolation transformer, DC to DC transformation is realized.(Lr is isolating transformer leakage by Q2, Q3, Cr, Lm, Lr Sense), D5, D6, D7, D8 constitute LLC half-bridge resonance topology.In the course of work will efficiently use transformer leakage inductance Lr, by Cr, Lm, Lr three's resonance realize the ZVS (no-voltage conducting) of primary side Q2, Q3 and (the zero current pass ZCS of secondary side D5, D6, D7, D8 It is disconnected), voltage and current crossover loss when reducing Q2, Q3 conducting reduces D5, D6, D7, D8 reverse current, promotes power supply and integrally imitates Rate.
Control unit 9 is modified in the output, and the voltage that prime isolating transformer is converted passes through D5, D6, D7, D8 tetra- It after a diode full-bridge rectification, then filters through C5, provides burning voltage electric current for rear class LED module.
The feedback unit 10 includes voltage feedback section and current feedback part.Voltage feedback section will export electricity Real-time condition feedback is pressed to stabilize the output voltage, provide for successive load by adjusting driving frequency to primary side half bridge drive unit Conducting voltage.Current feedback part will export electric current and be sampled by sense resistance R6, will collect current data information, feed back To intelligent digital control unit, intelligent dimming is realized.
The linearity light adjusting control unit 11 includes that PWM output adjusts unit, and the dimming control unit passes through control PWM output duty cycle adjusts the output power of main loop of power circuit;The dimming control unit receives external control signal setting PWM duty cycle is simultaneously modified the PWM duty cycle of external control signal setting, the correction value=setting value × transfer efficiency × power factor.The transfer efficiency calculation formula is η=Po/Pin, wherein " η " represents the transfer efficiency of power supply, " Po " is represented Output power, calculation formula are Po=Uo × Io, and " Uo " represents output voltage, and " Io " represents output electric current, pass through multiplying for the two Product calculates " Po ";Pin " represents input power, and calculation formula is Pin=Ui × Iin, and " Ui " represents input voltage, " Iin " generation Table input current calculates " Pin " by the product of the two;Power factor can determine according to input terminal voltage and current values;
The acquiring electric energy information unit 1 is used to acquire the input terminal of the main loop of power circuit and the electric energy number of output end According to;Including voltage and current data;1) it after input terminal access alternating current, is acquired by voltage transformer pt 1, Current Transmit 1 To the current data and voltage data of input terminal, the high-precision function metering core of SPI and UART communication interface is had by one Piece, decoding are sent to dimming control unit;2) collects the electric current of output end by copper-manganese after output enters and works normally, And by be decoded to voltage, the electric current of output be sent to dimming control unit;By electric energy (voltage, electric current, the function of input terminal Rate factor) information and output end (voltage, electric current) energy information all decode after calculating entered by embedded digital computing unit; 3) the electric energy acquisition unit is in AC input front end, including Current Transmit 1 and voltage transformer pt 1, and CT1 effect is AC input current data is acquired using the current information input data as electrical energy parameter processing unit, PT1 effect is Voltage data between AC input L and N is acquired using the voltage input data as electrical energy parameter processing unit.Electric current is mutual Sensor CT1 and voltage transformer pt 1 have the characteristics that small in size, precision is high, consistency is good.4) will pass through manganese-copper filament element RS1 Sampled output current and voltage data are sent to intelligent digital control unit .5 after decoding) calculating of electrical energy parameter processing unit 7 Processing, calculated result demodulate in light control unit 11, finally by dimming control unit 11 send corresponding control signal to Feedback unit 10, this purpose are precisely controlled control duty ratio to reach, and implement adjusting in real time, frequency control is based on maintaining not same district The adaptation threshold value in domain can be used instantaneous time starting and close.When there is a load present, various coefficients be can use to voltage, electricity Stream compensation is adjusted, while using Sofe Switch function, can be extended to avoid the generation of surge and the service life of on-off times, and reduce Effective noise, and finally realize linearity light adjusting function;
The electrical energy parameter processing unit 7 is communicated to connect with the acquiring electric energy information unit 1, for adopting energy information Light modulation computing unit 16 is sent to after the energy data decoding that collection unit 1 acquires.By voltage transformer pt 1, Current Transmit 1 The electric current and voltage data for collecting input terminal have the high-precision function metering core of SPI and UART communication interface by one Piece, decoding is sent to dimming control unit 11 and light modulation computing unit 16, while output electricity will be sampled by manganese-copper filament element RS1 Stream and voltage data are sent to intelligent digital control unit 11 and light modulation computing unit 16 after decoding.
The light modulation computing unit 16 communicated with the acquiring electric energy information unit 1 and with the dimming control unit 11 Communication;The data of acquisition are transferred to the light modulation computing unit 16 by the acquiring electric energy information unit 1, and are calculated through light modulation Unit 16 is transferred to dimming control unit 11 after calculating, the dimming control unit 11 is corrected defeated according to the calculated result received PWM duty cycle out adjusts main loop of power circuit output.
In addition, further, light modulation computing unit control can also include: (1) according to voltage sample numerical value and voltage Reference value obtains voltage deviation value=voltage reference value-voltage sample value;(2) it is exported according to the ratio value and integrated value It is worth result=ratio value+integrated value, and the output is adjusted, makes it through output valve and change within the scope of 0~180 °; (3) integrated value is adjusted and clipping, ratio value and integrated value is obtained after processing.In the utility model, digitizing solution is used It is controlled instead of simulation, the conventional simulations adjuster such as temperature drift can be eliminated and be difficult to the shortcomings that overcoming, be conducive to carry out good Linear Control, parameter tuning and variable parameter control, convenient for easily adjusting control model by the change of program software;Scheme and It realizes various new control strategy, while the number of component can be reduced, weight is alleviated, shorten the development cycle, simplify firmly Part structure, to improve the reliability of system.
Further, the initialization initialized including intelligent digital unit, peripheral module initialize and to the overall situation Variable is initialized;The intelligent digital control unit initialization specifically: high-speed peripheral is arranged in setting system clock frequency HISPCP and low-speed peripheral LOSPCP register are arranged I/O mouthfuls of multiplexings and control register, and general GPIOx mouthfuls each pin is defined For basic function or peripheral functionality;The peripheral module initialization specifically: ADC analog-to-digital conversion module is initialized, and PWM, ON/OFF are initialized.
The communication unit 13 is transferred to dimming control unit 11 for receiving externally input control signal, by institute Dimming control unit 11 is stated to determine PWM duty cycle setting value according to control signal or be transferred to light modulation by dimming control unit 11 Computing unit 16 determines PWM duty cycle setting value by light modulation computing unit 16 again.
The communication unit 13 is RS-485 bus communication control unit, 1) this functional unit RS-485 bus interface is A kind of common serial ports has many advantages, such as to be connected to the network convenience, good in anti-interference performance, long transmission distance.RS-485 transceiver is adopted With balance transmission and differential received, therefore there is the ability for inhibiting common mode interference, in addition transceiver has high sensitivity, can examine The voltage down to 200mv is measured, the transmission range of reliable communication is up to thousands of rice.Using RS-485 bus networking, a pair is only needed Twisted pair achieves that multisystem networking composition distributed system, equipment is simple, cheap, communication distance is long;2) work as user In the setting of PC terminal, by the corresponding digital code of the Parameter Switch of design, it is assigned to functional unit [11], functional unit [11] order is judged and control according to the data just received, proves dimmer command when singly receiving " code 0011 ", works as user It is represented when inputting 1-10 and exports corresponding light modulation value, prove that receiving is switching on and shutting down when the code received is " 0010 " Order, prove to receive when user inputs " 1 " is " shutdown " order, but proves that is received " opens when user's input " 0 " Machine " order;3) it when present apparatus access host computer, receives the corresponding command code and executes the corresponding command;
The environmental parameter detection unit 14 is transferred to light modulation meter for detecting environmental parameter, and by ambient parameter data Unit and/or dimming control unit are calculated, is determined under the environmental parameter by light modulation computing unit and/or dimming control unit PWM duty cycle setting value.1) this cell arrangement of is usually in standby, and when environment changes, environment transformation includes season Section variation, illuminance variation, point transformation, wagon flow, the stream of people, temperature carried out according to built-in default scene when changing it is linear Adjustment;2) this cell arrangement of has timed switching function, and control mode is not flexible in different seasons and special weather, and zero Scattered lamps and lanterns and wide Regional Distribution bring the inconvenience of control management, and control interface is not intuitive, and energy waste is serious, Failure inspection is costly, maintenance and maintenance trouble.3) this cell arrangement of can be in the case where default parameters be set, can be intelligent Turn on light, turn off the light, dim, and have fault alarm, fault location, management information push, environment sensing, electric energy system Meter, electricity charge report form statistics report, local device monitoring, remote device monitoring, mobile device monitor function.
The using terminal can be PC computer, mobile phone, tablet computer etc., 1) this cell arrangement of is that user conveniently sets Set output parameter adjusting, user according to environment, load change, the corresponding output parameter of setting, facilitate user flexibility use and Output parameter is set;2) when user PC terminal be arranged when, by the corresponding digital code of the Parameter Switch of design, be assigned to Functional unit [11], functional unit [11] judges and control order according to the data just received, when singly receiving " code 0011 " Dimmer command is proved, is represented when user inputs 1-10 and exports corresponding light modulation value, when the code received is " 0010 " It is switching on and shutting down order that proof, which receives, and prove to receive when user inputs " 1 " is " shutdown " order, but user inputs " booting " order received is proved when " 0 ";3) receives the code by encryption by decoding when present apparatus access host computer Afterwards, statistics the corresponding command code executes the corresponding command conveying function;
The Standby current supply circuit unit 6 is electrically connected with other circuit units, is powered for other circuits.Pass through AC alternating voltage is transformed into reliable and stable D/C voltage by flyback converter.For dimming control unit 11, the VCC of major loop IC Unit, communication unit 13, electrical energy parameter processing unit 7 provide Standby power supply necessary function of supplying power, usually cut off major loop Power supply extends the service life of major loop electronic component.In the environmental parameter touching detected when rear end environmental parameter detection unit 14 It connects main loop of power circuit when hair connects main loop of power circuit or when rear end RS-485 bus marco sends command adapted thereto or passes through Dimming control unit 11 connects main loop of power circuit.
The Sofe Switch 17 is electrically connected with the dimming control unit 11, for controlling the on and off of main loop of power circuit;Institute It states dimming control unit 11 and controls the work of Sofe Switch 17.This unit realizes that output is solid using the physical characteristic of main loop unit Part closes hardware capability, improves the on-off times of entire linearity light adjusting power supply, the high efficiency of dimming power source, also extended to make Use the service life.Detected when rear end environmental parameter detection unit 14 environmental parameter triggering connect main loop of power circuit when or rear end RS-485 bus marco connects main loop of power circuit when sending command adapted thereto.
The utility model is additionally provided with high_voltage isolation driving unit 12, this functional unit is that protection comes from power grid there are purpose Good quarantine measures are realized between load, proof load and communication unit 13 realize quarantine measures, not will receive outside Environmental disturbances and interference from power grid itself.
The embodiments of the present invention are only used for being illustrated the utility model, do not constitute to scope of the claims Limitation, other substantially equivalent substitutions that those skilled in that art are contemplated that, in scope of protection of the utility model It is interior.

Claims (9)

1. linearity light adjusting intelligent digital power supply characterized by comprising
Main loop of power circuit unit, the main loop of power circuit unit have input terminal and output end;
Dimming control unit, the linearity light adjusting control unit include that PWM output adjusts unit, and the dimming control unit passes through Control PWM output duty cycle adjusts the output power of main loop of power circuit;The dimming control unit receives external control signal and sets The PWM duty cycle set simultaneously is modified the PWM duty cycle of external control signal setting, the correction value=setting value × conversion Efficiency × power factor;
The transfer efficiency calculation formula is η=Po/Pin, wherein " η " represents the transfer efficiency of power supply,
" Po " represents output power, and calculation formula is Po=Uo × Io, and " Uo " represents output voltage, and " Io " represents output electric current, " Po " is calculated by the product of the two;
Pin " represents input power, and calculation formula is Pin=Ui × Iin, and " Ui " represents input voltage, and " Iin " represents input electricity Stream, calculates " Pin " by the product of the two;
Power factor can determine according to input terminal voltage and current values;
Acquiring electric energy information unit, the acquiring electric energy information unit are used to acquire input terminal and the output of the main loop of power circuit The energy data at end;Including voltage and current data;
Dim computing unit, the light modulation computing unit and the acquiring electric energy information unit communication and with the brightness adjustment control list Member communication;The data of acquisition are transferred to the light modulation computing unit by the acquiring electric energy information unit, and calculate list through light modulation Member is transferred to dimming control unit after calculating, the dimming control unit is according to the calculated result received, amendment output PWM duty Than adjusting main loop of power circuit output.
2. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that it further include communication unit, it is described Communication unit is transferred to dimming control unit for receiving externally input control signal, by the dimming control unit root It determines PWM duty cycle setting value according to control signal or light modulation computing unit is transferred to by dimming control unit and calculated again by light modulation Unit determines PWM duty cycle setting value.
3. linearity light adjusting intelligent digital power supply according to claim 2, which is characterized in that it further include using terminal, it is described Using terminal is communicated by the communication unit with the light control unit;The using terminal is used for input control order, and It is converted to control signal and is conveyed to communication unit.
4. linearity light adjusting intelligent digital power supply according to claim 2, which is characterized in that the communication unit and light modulation are controlled High_voltage isolation driving unit is additionally provided between unit processed.
5. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that further include that environmental parameter detection is single Member, the environmental parameter detection unit for detecting environmental parameter, and by ambient parameter data be transferred to light modulation computing unit and/ Or dimming control unit, determine that the PWM duty cycle under the environmental parameter is set by light modulation computing unit and/or dimming control unit Definite value.
6. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that further include that Standby powers back Road unit, the Standby current supply circuit unit and the main loop of power circuit unit, dimming control unit, acquiring electric energy information Unit and light modulation computing unit electrical connection, be the main loop of power circuit unit, dimming control unit, acquiring electric energy information unit and Dim computing unit power supply.
7. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that it further include Sofe Switch, it is described soft Switch is electrically connected with the dimming control unit, for controlling the on and off of main loop of power circuit;The dimming control unit control The Sofe Switch work.
8. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that further include that electrical energy parameter processing is single Member, the electrical energy parameter processing unit are connect with the acquiring electric energy information unit communication, are used for acquiring electric energy information unit Light modulation computing unit is sent to after the energy data decoding of acquisition.
9. linearity light adjusting intelligent digital power supply according to claim 1, which is characterized in that the main loop of power circuit unit packet Include the lightning protection device unit being sequentially connected electrically, electromagnetic compatibility unit, rectification filtering unit, PFC converter unit;Primary converter list Member, secondary converter unit and output adjust unit;The output adjusts unit and is electrically connected with output end.
CN201820035457.XU 2018-01-09 2018-01-09 Linearity light adjusting intelligent digital power supply Expired - Fee Related CN208337961U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110267389A (en) * 2019-05-22 2019-09-20 上海博昂电气有限公司 Power source drive device and LED lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110267389A (en) * 2019-05-22 2019-09-20 上海博昂电气有限公司 Power source drive device and LED lamp

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