CN206365078U - A kind of LED illumination constant-current switch power source system - Google Patents

A kind of LED illumination constant-current switch power source system Download PDF

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Publication number
CN206365078U
CN206365078U CN201621317588.4U CN201621317588U CN206365078U CN 206365078 U CN206365078 U CN 206365078U CN 201621317588 U CN201621317588 U CN 201621317588U CN 206365078 U CN206365078 U CN 206365078U
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CN
China
Prior art keywords
module
wireless
constant
power source
current switch
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Expired - Fee Related
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CN201621317588.4U
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Chinese (zh)
Inventor
彭建盛
彭金松
韦庆进
覃勇
何奇文
李伟
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Hechi University
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Hechi University
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Abstract

The utility model provides a kind of LED illumination constant-current switch power source, belongs to electrical equipment.The system includes remote control module and constant-current switch power source module, remote control module is made up of the first wireless module, battery and Independent keys, and constant-current switch power source module includes EMI filtering, input rectifying and wave-filtering, inverse excitation type converter, output end rectifying and wave-filtering, current sample, voltage sample, master controller, MOSFET driving, accessory power supply and the second wireless module;Master controller is connected with MOSFET drivings, the second wireless module, accessory power supply, current sample and voltage sample respectively, and is connected by MOSFET drivings with inverse excitation type converter, and the accessory power supply provides power supply to master controller and the second wireless module.The utility model stability of a system is good, and high conversion efficiency, power is obviously improved, and reduces electromagnetic interference;Also the versatility of constant-current switch power source, more systematization, integrated, hommization and intellectuality are improved, and reduces integrated cost.

Description

A kind of LED illumination constant-current switch power source system
【Technical field】
The utility model is related to LED device system regions, and in particular to a kind of LED illumination constant-current switch power source system.
【Background technology】
LED illumination has become the trend of globalization by feat of the advantage of its energy-saving and environmental protection.In recent years, in the policies of various countries Under support, the market value of whole LED illumination industry shows the growth of explosion type[3], used as the illumination of LED illumination key component Constant-current switch power source industry, has naturally also welcome development.
China's illumination is started in constant-current switch power source industry in the 1970s, by the development of more than 30 years, tentatively Form more complete industrial chain.But, state's intraoral illumination is remained unchanged with constant-current switch power source industry and there are problems, for example Market confusion, have that disorderly competition, product homogeneity be serious, production capacity surplus etc..Because key technology falls behind, subelement is needed Import is wanted, just falls behind foreign countries one on cost of material and cuts greatly, but face the price competition for facing sternness, so, state's intraoral illumination is permanent Current switching power supply enterprise pursues low cost, ignores product quality simply in order to develop, and this just necessarily causes domestic market chaotic.
Abroad, LED illumination starting is early, and technology is more ripe, and has related support policy so that illumination is permanent Current switching power supply and LED technology are quickly grown, and LED illumination utensil has begun to popularization.Industrial technology of the U.S. in LED illumination Leading position is constantly in exploitation, is the leader of LED illumination technology.USDOE sets up and subsidizes " National Semiconductor Illuminate project ", develop semiconductor lighting industry.Plan by 2012 to replace fluorescent lamp, the year two thousand twenty enters market comprehensively., From these plans, U.S.'s Technical comparing on illumination constant-current switch power source is ripe, and has relevant policies support, develops Rapidly.
【Utility model content】
Goal of the invention of the present utility model is:For above-mentioned problem, there is provided a kind of LED illumination constant current switch Power-supply system, the constant-current switch power source stability of a system of the present utility model is good, and high conversion efficiency, power is obviously improved, and is reduced Electromagnetic interference;Also LED is made to be standardized with illumination with constant-current switch power source, so that versatility is improved, towards systematization, integrated, people Property and intelligent control direction are strided forward, and reduce integrated cost, LED lamp is further popularized.
To achieve these goals, the technical solution adopted by the present invention is as follows:
A kind of the utility model LED illumination constant-current switch power source system, including remote control module and constant-current switch power source mould Block, the remote control module is made up of the first wireless module, battery and button, and the battery is wireless to button and first by circuit Module provides power supply, and button is connected with the first wireless module, and push button signalling sends the first wireless module, the first wireless mould to Push button signalling is changed into wireless signal transmission and gone out by block;The constant-current switch power source module includes EMI filtering, input rectification Filtering, inverse excitation type converter, output end rectifying and wave-filtering, current sample, voltage sample, master controller, MOSFET drivings, auxiliary electricity Source and the second wireless module;The EMI filtering, input rectifying and wave-filtering, inverse excitation type converter, output end rectifying and wave-filtering, electric current Sampling, voltage sample are sequentially connected;The remote control module passes through the first wireless module and the second nothing with constant-current switch power source module The wireless signal connection of wire module;The master controller respectively with MOSFET drivings, the second wireless module, accessory power supply, electric current Sampling and voltage sample connection, and be connected by MOSFET drivings with inverse excitation type converter, the accessory power supply is to master controller Power supply is provided with the second wireless module.
Wireless launcher is installed, the second wireless module, which is provided with, wirelessly to be connect in the first wireless module described in the utility model Device is received, and transmitter is identical with the frequency of receiver, is 315MHz.The effect of circuit is the first nothing in remote control module of the present invention Transmitter in wire module sends receiver of the electromagnetic wave signal to the second wireless module in constant-current switch power source, thus realizes Remote control switch, the function such as remote control light modulating.Remote control circuit is made up of 315MHz wireless modules and button.315MHz transmitter modules Working frequency is 315M, using sound table resonator SAW frequency stabilizations, and frequency stability is high, when environment temperature is in -25~+85 degree Between when changing, frequency drift is only 3ppm/ degree.It is optimum operating voltage, the milli of emission current about 60 when emitting voltage is 12V Peace, 700~800 meters of field transmission range, the milliwatt of transmission power about 500.315MHz wireless modules are with high stability and low work( Consumption is liked by many developers.315MHz wireless modules are easy to use, it is only necessary to provide 3~12V dc sources, by jumping Two module's address are arranged to identical by line.315MHz wireless modules carry coding, decoding circuit.In sending module 4 bits of end input, in receiving terminal with regard to the binary number of identical 4 can be received.
The PWM that master controller described in the utility model is produced is transmitted to inverse excitation type converter by MOSFET drivings and provides driving Contain luminous intensity Acquisition Circuit in signal, and master controller.Atemga8 is used to be master controller in the system, Atmega8 is The high-performance of Atmel companies product, 8 AVR microprocessors of low-power consumption, the processor speed are fast, and performance is up to 16MIPS, Carry 10,8 tunnel ADC converters, 3 road PWM.The controller is cheap, function admirable, with making main control in Switching Power Supply Device has to have great advantage in cost performance.In luminous intensity Acquisition Circuit, when extraneous intensity variation, photo resistance R21 resistance Change, causes the voltage change for being sent to ADC2 ports, is gathered by Atmega8, then handled.Voltage, current feedback input Circuit is common RC low pass filters, weakens interference, makes feeding A/D converter signal purer, be conducive to raising system Stability.Master controller be responsible for produce PWM give anti exciting converter provide drive signal, and to output current, output voltage, Ambient lighting is acquired, then adjusts PWM pulsewidths, realizes constant current output.In addition, master controller also needs to receive 315MHz number According to then adjusting working condition according to data.MOSFET drives provides driving to the switching tube of inverse-excitation type conversion section.Flyback Formula converter completes Active PFC and DC/DC conversion simultaneously, and accessory power supply is to master controller and 315MHz wireless receiving and dispatching moulds Block provides power supply.
Accessory power supply of the present invention is finished product RCC power modules.Input voltage range is AC85~250V, be output as+ 5V0.5A and+8V0.2A, the accessory power supply stand-by power consumption is small, high conversion efficiency, and stable and reliable in work.
Voltage sample described in the utility model, the circuit of current sample are common RC low pass filters.
System master controller described in the utility model produces the PWM with Active PFC algorithm, and in master controller A/D converters gather output voltage and electric current in real time, and are adjusted again according to current sample, voltage sample and ambient light intensity PWM pulsewidths, realize constant current output.The master controller that the design is used is Atmega8, is AVR 8 high-performance master controllers, The advance binary program code that is cured is needed to be run according to designed program.Determining with single-chip microcomputer is needed in the system When device produce the PWM with Active PFC algorithm, A/D converter gathers output voltage and electric current in real time, and according to collection The signal adjustment PWM pulsewidths returned, realize constant current output.In addition, master controller also needs to monitor whether to receive wireless mould constantly The data of block, and make corresponding action.
The utility model realizes that Active PFC and DC/DC are converted simultaneously using inverse excitation type converter, inverse-excitation type conversion Used in device and arrived power MOSFET.If power MOSFET drivings are bad, gently then cause transducer effciency low, it is heavy then cause device Part burns.Drive two aspects of main attention:One is that driving voltage is sufficiently high, to ensure that MOS can be fully on;Two be driving Speed is sufficiently fast, i.e., driving current is sufficiently large, and could so try one's best the switching loss reduced on MOS, improve transducer effciency.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
The utility model LED illumination constant-current switch power source system.The main bright spot of the system is that power factor (PF) is high, conversion effect Rate is high, and remote-controlled controlling switch machine, remote control adjustment output current realizes intelligentized control method, and with simple circuit structure Realize above-mentioned functions.
The utility model system completes Active PFC and DC/DC conversion, main control using inverse excitation type converter simultaneously Device is Atmega8 single-chip microcomputers, and controller is responsible for producing the PWM with Active PFC and providing to drive to inverse excitation type converter believing Number, realize Active PFC and DC/DC conversion.Inverse excitation type converter DC output end resistance sample rate current, is filtered by RC The A/D inputs of controller are fed back to after ripple, controller adjusts PWM duty cycle according to the current signal fed back, to ensure Output end current is constant.System realizes remote control switch with 315MHz radio receiving transmitting modules, the function such as remote control adjustment output current. In addition, system can automatically adjust output current with photosensitive electrical resistance collection ambient light intensity signal according to ambient light intensity.
System of the present utility model meets design requirement, can apply to LED illumination through actual measurement, constant-current switch power source In light fixture, constant-current switch power source output end reality is with LED as load, and LED operation is normal, does not occur flashing, generates heat seriously The problems such as.
【Brief description of the drawings】
Fig. 1 is a kind of schematic diagram of LED illumination constant-current switch power source system of the utility model.
Fig. 2 is a kind of circuit diagram of the master controller of LED illumination constant-current switch power source system of the utility model.
Fig. 3 is a kind of circuit diagram of the remote control module of LED illumination constant-current switch power source system of the utility model.
Fig. 4 is a kind of auxiliary power circuit principle schematic of LED illumination constant-current switch power source system of the invention.
Items in accompanying drawing illustrate:
1- master controllers;2-MOSFET drives;3- accessory power supplys;The wireless modules of 4- second;5-EMI is filtered;6- inputs Rectifying and wave-filtering;7- inverse excitation type converters;8- output end rectifying and wave-filterings;9- current samples;10- voltage samples;The wireless moulds of 11- first Block;12- batteries;13- buttons;14- AC powers.
【Embodiment】
Principle of the present utility model, the course of work and embodiment are described further below in conjunction with the accompanying drawings.
Fig. 1 is a kind of schematic diagram of LED illumination constant-current switch power source system of the utility model.As shown in figure 1, a kind of Constant-current switch power source system, including remote control module and constant-current switch power source module are used in LED illuminations, and the remote control module is by first Wireless module 11, battery 12 and button 13 are constituted, and the battery 12 is provided by circuit to the wireless module 11 of button 13 and first Power supply, button 13 is connected with the first wireless module 12, and push button signalling sends the first wireless module 11, first wireless module to Push button signalling is changed into wireless signal transmission by 11 goes out;The remote control circuit effect of remote control module is to send electromagnetic wave signal to perseverance The receiver of the second wireless module 4 of current switching power supply is received, and thus realizes remote control switch, the function such as remote control light modulating.Remote control Electric routing battery, the first wireless module 11 and button 13 are constituted.The working frequency of the transmitter of first wireless module 11 is 315M, Using sound table resonator SAW frequency stabilizations, frequency stability is high, and when changing between environment temperature is spent -25~+85, frequency drift is only For 3ppm/ degree.It is optimum operating voltage, about 60 milliamperes of emission current, field transmission range 700 when emitting voltage is 12V ~800 meters, the milliwatt of transmission power about 500.First wireless module 11 is used more with high stability and low-power consumption.
First wireless module 11 is easy to use, it is only necessary to provide 3~12V dc sources, by wire jumper, by two module grounds Location is arranged to identical.First wireless module 11 carries coding, decoding circuit.4 binary systems are inputted at sending module end Number, in receiving terminal with regard to the binary number of identical 4 can be received, as shown in Figure 3.In Fig. 3, BT1 is 12V batteries, to remote control circuit Power supply is provided.E1 is transmitting antenna.S1~S4 is 4 buttons, for providing 4 bits to the first transmitter module 11.Its Middle S1 effect is switching on and shutting down, often by on-off state of switching next time.S2 effect is switching working mode, there is automatic Output current and manually regulation two kinds of mode of operations of output current are adjusted, often by switching one action pattern next time.S3 is in hand It is used to increase output current during dynamic regulation current mode output, often by once increasing 60mA.S4 is in regulation output current mould manually It is used to reduce output current during formula, often by once reducing 60mA.
The constant-current switch power source module includes EMI filtering 5, input rectifying and wave-filtering 6, inverse excitation type converter 7, output end Rectifying and wave-filtering 8, current sample 9, voltage sample 10, master controller 1, MOSFET drivings 2, the wireless module of accessory power supply 3 and second 4;The EMI filtering 5, input rectifying and wave-filtering 6, inverse excitation type converter 7, output end rectifying and wave-filtering 8, current sample 9, voltage are adopted Sample 10 is sequentially connected;The remote control module passes through the first wireless module 11 and the second wireless module 4 with constant-current switch power source module Wireless signal connection;The master controller 1 drives the 2, second wireless module 4, accessory power supply 3, electric current to adopt with MOSFET respectively Sample 9 and voltage sample 10 are connected, and are connected by MOSFET drivings 2 with inverse excitation type converter 7, and the accessory power supply is to main control The wireless module 4 of device 1 and second provides power supply.
In the remote control module of the system, wireless launcher is installed in the first wireless module 11, the second wireless module 4 is installed There is wireless receiver, and transmitter is identical with the frequency of receiver, is 315MHz.Circuit in the utility model remote control module Effect is that transmitter in the first wireless module 11 sends electromagnetic wave signal and connect to the second wireless module 4 in constant-current switch power source Device is received, thus remote control switch is realized, the function such as remote control light modulating.
In the system constant-current switch power source module, the PWM that master controller 1 is produced is transmitted to inverse-excitation type by MOSFET drivings 2 Converter 7, which is provided, contains luminous intensity Acquisition Circuit in drive signal, and master controller 1, as shown in Figure 2.Used in the system Atemga8 is master controller 1, Atmega8 be Atmel companies produce high-performance, 8 AVR microprocessors of low-power consumption, at this Manage device speed fast, performance is up to 16MIPS, carries 10,8 tunnel ADC converters, 3 road PWM.The controller is cheap, and performance is excellent It is good, with Switching Power Supply host 1 have and have great advantage in cost performance.In luminous intensity Acquisition Circuit, work as ambient light During Strength Changes, photo resistance R21 resistance variations cause the voltage change for being sent to ADC2 ports, gathered by Atmega8, then Handled.Voltage, current feedback input circuit are common RC low pass filters, weaken interference, make feeding A/D converter Signal is purer, is conducive to the stability of raising system.Master controller is responsible for producing PWM and providing to drive to anti exciting converter believing Number, and output current, output voltage, ambient lighting are acquired, then PWM pulsewidths are adjusted, realize constant current output.In addition, Master controller also needs to receive 315MHz data, then adjusts working condition according to data.MOSFET drivings 2 become to inverse-excitation type The switching tube for changing part provides driving.Inverse excitation type converter 7 completes Active PFC and DC/DC conversion, accessory power supply 3 simultaneously Power supply is provided to the wireless module 4 of master controller 1 and second.
Accessory power supply 3 in the system constant-current switch power source module is finished product RCC power modules.Input voltage range is AC85~250V, is output as+5V0.5A and+8V0.2A, and the accessory power supply stand-by power consumption is small, high conversion efficiency, and works steady Fixed reliable, as shown in figure 4, T1 is the finished product power module, T1 inputs terminate to electromagnetic interface filter output end, and DC output end adds Electric capacity carries out filtering and moves back idol.
System master controller 1 described in the utility model is produced in the PWM with Active PFC algorithm, and master controller 1 A/D converter gather output voltage and electric current in real time, and according to current sample 9, voltage sample 10 and ambient light intensity again PWM pulsewidths are adjusted, constant current output is realized.The master controller 1 that the utility model is used is Atmega8, is AVR 8 high-performance Master controller is, it is necessary to which the binary program code that is cured in advance could be run according to designed program.Need to use in the system The timer of master controller 1 produces the PWM with Active PFC algorithm, and A/D converter gathers output voltage and electric current in real time, And the signal returned according to collection adjusts PWM pulsewidths, realizes constant current output.In addition, master controller 1 also needs to monitor constantly is It is no to receive the data of wireless module, and make corresponding action.
Realize that Active PFC and DC/DC are converted simultaneously using inverse excitation type converter in the system, inverse excitation type converter 7 In used power MOSFET.If power MOSFET drivings are 2 bad, gently then cause transducer effciency low, it is heavy then cause device Part burns.Drive two aspects of main attention:One is that driving voltage is sufficiently high, to ensure that MOS can be fully on;Two be driving Speed is sufficiently fast, i.e., driving current is sufficiently large, and could so try one's best the switching loss reduced on MOS, improve transducer effciency.
Operation principle of the present utility model:The system includes remote control module and constant-current switch power source module two parts, remote control Module has battery 12, the first wireless module 11 and button 13, and wherein button 13 includes switching on and shutting down, output current regulation, pattern The buttons such as selection, when there is button 13 to be pressed, the consciousness transformation of user is by the first wireless module 11 in remote control module Electromagnetic wave signal is sent by transmitter, and the receiver of the second wireless module 4 in constant-current switch power source module receives electromagnetic wave letter After number, handled accordingly, embodied the consciousness of user, wherein, battery is powered to the first wireless module 11, button production Raw 4 bits, provide data to the first wireless module 11 and send foundation.
Constant-current switch power source module mainly contains EMI filtering 5, input rectifying and wave-filtering 6, inverse excitation type converter 7, output Hold rectifying and wave-filtering 8, voltage sample 10, current sample 9, master controller 1, MOSFET drivings 2, the wireless mould of accessory power supply 3 and second Block 4;Receiver in second wireless module 4, which is received, to be changed into electric signal after the electromagnetic wave signal that remote control module is sent and sends to Master controller 1, master controller 1 is responsible for generation PWM and provides drive signal to anti exciting converter 7, and to output current, output electricity Pressure, ambient lighting are acquired, then adjust PWM pulsewidths, realize constant current output.In addition, master controller 1 also needs to receive 315MHz Data, then adjust working condition according to data.MOSFET drivings 2 provide drive to the switching tube of inverse-excitation type conversion section It is dynamic.Inverse excitation type converter completes Active PFC and DC/DC conversion simultaneously, and accessory power supply 3 is wireless to master controller 1 and second Module 4 provides power supply.

Claims (3)

1. a kind of LED illumination constant-current switch power source system, including remote control module and constant-current switch power source module, the remote control mould Block is made up of the first wireless module (11), battery (12) and button (13), the battery (12) by circuit to button (13) and First wireless module (11) provides power supply, and button (13) is connected with the first wireless module (11), and push button signalling sends the first nothing to Push button signalling is changed into wireless signal transmission and gone out by wire module (11), first wireless module (11);The constant current switch Power module includes EMI filtering (5), input rectifying and wave-filtering (6), inverse excitation type converter (7), output end rectifying and wave-filtering (8), electricity Stream sampling (9), voltage sample (10), master controller (1), MOSFET drivings (2), accessory power supply (3) and the second wireless module (4);The EMI filtering (6), input rectifying and wave-filtering (6), inverse excitation type converter (7), output end rectifying and wave-filtering (8), electric current are adopted Sample (9), voltage sample (10) are sequentially connected, and EMI filtering (6) external AC power supplies;It is characterized in that:The remote control module with Constant-current switch power source module is connected by the wireless signal of the first wireless module (11) and the second wireless module (4);The master control Device (1) processed drives (2), the second wireless module (4), accessory power supply (3), current sample (9) and voltage sample with MOSFET respectively (10) connect, and drive (2) to be connected with inverse excitation type converter (7) by MOSFET, the accessory power supply (3) gives master controller (1) and the second wireless module (4) provide power supply.
2. a kind of LED illumination constant-current switch power source system according to claim 1, it is characterised in that:Described first is wireless Wireless launcher is installed, the second wireless module (4) is provided with wireless receiver in module (11), and transmitter and receiver Frequency is identical, is 315MHz.
3. a kind of LED illumination constant-current switch power source system according to claim 1, it is characterised in that:The master controller (1) PWM produced is transmitted to inverse excitation type converter (7) and provided and contained in drive signal, and master controller (1) by MOSFET drivings Luminous intensity Acquisition Circuit.
CN201621317588.4U 2016-12-03 2016-12-03 A kind of LED illumination constant-current switch power source system Expired - Fee Related CN206365078U (en)

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CN201621317588.4U CN206365078U (en) 2016-12-03 2016-12-03 A kind of LED illumination constant-current switch power source system

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Application Number Priority Date Filing Date Title
CN201621317588.4U CN206365078U (en) 2016-12-03 2016-12-03 A kind of LED illumination constant-current switch power source system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106535409A (en) * 2016-12-03 2017-03-22 河池学院 Constant current switching power supply system for LED illumination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106535409A (en) * 2016-12-03 2017-03-22 河池学院 Constant current switching power supply system for LED illumination

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