CN103442480A - Novel intelligent high-precision LED driving power source - Google Patents
Novel intelligent high-precision LED driving power source Download PDFInfo
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- CN103442480A CN103442480A CN2013103352648A CN201310335264A CN103442480A CN 103442480 A CN103442480 A CN 103442480A CN 2013103352648 A CN2013103352648 A CN 2013103352648A CN 201310335264 A CN201310335264 A CN 201310335264A CN 103442480 A CN103442480 A CN 103442480A
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Abstract
The invention discloses a novel intelligent high-precision LED driving power source which comprises an alternating-current input rectifying filtering unit, a flyback DC/DC power source conversion unit, a secondary rectifying unit, a ZIGBEE dimming unit, a MAX16822 constant current unit, a voltage sampling unit, a current Hall sampling unit, an MSP430F149 single chip microcomputer unit, an auxiliary temperature sampling module, a liquid crystal display module, a keyboard input module, a GSM wireless communication module, an auxiliary power source module of a single chip microcomputer, an I/O extension module, a crystal oscillation module and an auxiliary protection circuit. The novel intelligent high-precision LED driving power source has the advantages that the circuit structure is novel, the power source efficiency is high, the output current precision is higher due to the adoption of a MAX16822 constant current chip, the digitalized degree and the intelligentized degree are high, the MSP430F149 single chip microcomputer fully participates in the closed-loop control over the output current and the output voltage, the man-machine interaction is strong, and due to the fact that an ultracrystalline magnetic core is adopted in a transformer, the size is small.
Description
Technical field
The present invention relates to a kind of LED driving power source for illumination, belonged to especially high frequency switch power field of electronic technology field.
Background technology
Along with the development of lighting technology, the LED lighting technology, due to its energy-conserving and environment-protective and long advantage of life-span, has obtained application comparatively widely in productive life.
LED is converted into the signal of telecommunication light emitting semiconductor device of light signal.It has forward conduction, oppositely cut-off and superpressure breakdown characteristics.The LED lamp should select brightness to determine the power drive mode etc. of driving LED power supply according to purposes, and should meeting of driving power is energy-conservation, green economy, requirement efficiently.Energy-conservation the low in energy consumption of driving power that be embodied in; Green economy is embodied in drive circuit will higher power factor; The conversion efficiency of the present Switching Power Supply of active isomer is high.
Numerical control LED power supply is a new developing direction, and single-chip microcomputer control technology is applied in Switching Power Supply, realizes digitlization, the intellectuality of Switching Power Supply, can make its more perfect function.Digital power based on single-chip microcomputer control technology, can realize greater functionality, as Wireless remote control, with an automatic light meter, parameter display, GSM communication etc.And DCPS digitally controlled power source output voltage adjustable range is wide, and degree of regulation is high, interpersonal interactivity is strong, is one of trend of Switching Power Supply future development.Some traditional ways are that (1) single-chip microcomputer is just born Intelligent Measurement and Based Intelligent Control task, and the control of power supply is still the control model of general Switching Power Supply; (2) voltage of single-chip microcomputer output, as the reference voltage of power supply, also must have the drive circuit chip (PWM produces circuit) of power switch simultaneously.The shortcoming of these two kinds of ways is that single-chip microcomputer does not participate in the middle of the FEEDBACK CONTROL of driving power output electric energy fully.
Ultramicro-crystal alloy is to obtain after treatment with non-crystaline amorphous metal the microcrystallizing alloy that diameter is 10～20 nanometers again, also referred to as nano-crystal soft magnetic alloy.It has higher μ
l, μ
r, B
svalue, the iron loss value is also low.Because comprehensive magnetic can be excellent, be widely used in the high power switching power supply medium/high frequency transformer, chokes are unshakable in one's determination, instrument transformer is unshakable in one's determination, radio-frequency suppressor etc., it has greatly the trend that replaces the intimate material of current all uses.And the ultracrystallite plate is very thin, resistivity very high (than silicon steel sheet, the high twice of permalloy), be well suited for using under the Switching Power Supply high frequency; Amorphous, ultracrystallite do not exist magnetocrystalline anisotropy, crystal boundary etc., do not have the atomic arrangement of long-range order, and loss power is little, are therefore the ideal materials of high frequency transformer.
Summary of the invention
The present invention is mainly for common monolithic processor controlled great power LED power supply, the output current precision is low, single-chip microcomputer does not participate in the middle of the FEEDBACK CONTROL of driving power output electric energy fully, the intelligent digital degree is low, the shortcomings such as volume of transformer is large, design a kind of output current precision high, and single-chip microcomputer participates in the middle of the closed loop feedback control of driving power output electric energy fully, the intelligent digital degree is high, the novel intelligent high accuracy LED driving power that volume of transformer is little.
According to technical scheme provided by the present invention, described a kind of novel intelligent high accuracy LED driving power, main circuit topological structure is the inverse-excitation type switch power-supply topological structure, circuit comprises: exchange the input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, the secondary rectification unit, ZIGEBEE light modulation unit, MAX16822 constant current unit, the voltage sample unit, the current Hall sampling unit, MSP430F149 single machine unit and attached temperature sampling module, LCD MODULE, keyboard input module gsm wireless communication module, the accessory power supply module of single-chip microcomputer, the I/O expansion module, the crystal oscillator module, auxiliary protection circuit, the 220V civil power is exported electric current after preliminary rectification then after the secondary rectification module carries out the secondary rectification through exchanging input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, is transported to MAX16822 constant current unit and carries out constant current and control and make the current precision of output higher, between secondary rectification unit and MAX16822 constant current unit, by voltage sample unit, current Hall sampling unit, respectively to voltage and current sample, wherein the voltage sample unit consists of potential-divider network, and the current Hall sampling unit consists of Hall current sensor, the MSP430F149 single machine unit is responsible for the voltage, the current signal that collect are processed, then adjust the PWM duty ratio, and the pwm signal after adjusting is sent to conducting and the shutoff of switch mosfet pipe and then control inverse-excitation type DC/DC power conversion unit by buffer circuit, the MSP430F149 single machine unit also is responsible for voltage, the current signal collected judged whether to surpass safe range, if surpass send warning, the attached temperature sampling module of MSP430F149 single machine unit is responsible for system temperature is sampled, the attached LCD MODULE of MSP430F149 single machine unit be responsible for to system acquisition to voltage, electric current, the numerical value of temperature signal shown, the attached gsm module of MSP430F149 single machine unit is responsible for the MSP430F149 single machine unit is sent to monitor terminal to the warning message of voltage, electric current, temperature, the attached keyboard input module of MSP430F149 single machine unit is used for to single-chip microcomputer input related parameter values.
, there are two kinds of mode of operations described ZIGEBEE light modulation unit, and the one, the PWM dim signal that ZIGBEE light modulation unit is sent to MAX16822 constant current unit by the external remote control module carries out the control of duty ratio; The 2nd, the variation that the variation by automatic illuminant module by light changes into current potential is transported to ZIGBEE light modulation unit, and then changes the duty ratio that ZIGBEE light modulation unit sends to the PWM dim signal of MAX16822 constant current unit, realizes with an automatic light meter.
It is a kind of mixed-signal processor of super low-power consumption that described one-chip computer module adopts MSP430F149, has peripheral hardware in the sheet that extra low voltage, super low-power consumption, powerful disposal ability, system works are stable, abundant.
Described inverse-excitation type DC/DC power conversion unit, its magnetic core of transformer material adopts the ultracrystallite material, make designed transformer energy conversion efficiency high, and volume of transformer is little.
Described MAX16822 constant current unit adopts the MAX16822 chip mainly to realize two functions, and one is to utilize the constant current function of MAX16822 chip to make the precision of output current further improve; The another one function is to utilize the PWM input port of MAX16822, accepts the PWM dim signal by the input of ZIGEBEE light modulation unit.
Described voltage sample unit adopts potential-divider network carry out the sampling of output voltage signal and the signal sampled is transported to the MSP430F149A/D port; Described current Hall sampling unit utilizes Hall current sensor to carry out the sampling of current signal, and the signal sampled is transported to the MSP430F149A/D port.
Described a kind of novel intelligent high accuracy LED driving power, it is characterized in that, the electric potential signal of described MSP430F149 single machine unit receiver voltage sampling unit and the sampling of current Hall sampling unit, adjustment is input to the duty ratio of the pwm signal of switching tube, and the MSP430F149 single-chip microcomputer participates in the middle of the FEEDBACK CONTROL of driving power output current voltage fully and then realizes the control of constant-current voltage-stabilizing.
The attached LCD MODULE of described MSP430F149 single machine unit be responsible for to system acquisition to voltage, electric current, the numerical value of temperature signal shown.
The attached gsm module of described MSP430F149 single machine unit is responsible for the MSP430F149 single machine unit is sent to monitor terminal to the warning message of voltage, electric current, temperature.
Also comprise electromagnetic interference suppression circuit in described circuit, the electromagnetic interference suppressed in electrical network is inputted to power supply, suppresses the electromagnetic interference that produces in power supply to feedback in electrical network simultaneously.
Described LED power supply has two-way output, can be respectively the power supply of two-way 15WLED lamp.
The invention has the beneficial effects as follows:
1) described a kind of novel intelligent high accuracy LED driving power, the MAX16822 chip adopted and auxiliary circuit thereof make the output current precision high, and MAX16822 can accept the light modulation pwm signal sent by ZIGEBEE light modulation unit, and then change output current size reaches the light modulation purpose.
2) described a kind of novel intelligent high accuracy LED driving power, the MSP430F149 adopted participates in the middle of the closed loop feedback control of driving power output electric energy fully, and digitized degree is high.
3) described a kind of novel intelligent high accuracy LED driving power, intelligent degree is high, and the main control chip that adopts is MSP430F149 low-power consumption mixed-signal processor, has ultralow pressure, super low-power consumption and powerful disposal ability.Utilize the MS9430F149 These characteristics, designed LED power supply miscellaneous function is perfect, comprising: sensitization light modulation automatically, and wireless remote control light modulation, temperature sampling, voltage, current sample, parameter display, the input of parameter keyboard are set, and GSM abnormal information sending function.
4) described a kind of novel intelligent high accuracy LED driving power, the magnetic core of transformer of the inverse-excitation type DC/DC power conversion unit that adopts adopts the ultracrystallite magnetic core to be designed, and the volume that makes transformer compare the transformer that adopts the traditional material magnetic core dwindles greatly.
The accompanying drawing explanation
Fig. 1 is LED circuit overall structure block diagram.
Fig. 2 is the LED main circuit diagram.
Fig. 3 is main control chip MSP430F149 minimum system figure.
Fig. 4 is single-chip microcomputer output PWM driving isolation circuit diagram.
Fig. 5 is ZIGBEE minimum system figure.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, circuit of the present invention comprises: exchange input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, secondary rectification unit, ZIGEBEE light modulation unit, MAX16822 constant current unit, voltage sample unit, current Hall sampling unit, MSP430F149 single machine unit and attached temperature sampling module, LCD MODULE, keyboard input module gsm wireless communication module, the accessory power supply module of single-chip microcomputer, I/O expansion module, crystal oscillator module, auxiliary protection circuit; The 220V civil power is exported electric current after preliminary rectification then after the secondary rectification module carries out the secondary rectification through exchanging input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, is transported to MAX16822 constant current unit and carries out constant current and control and make the current precision of output higher; Between secondary rectification unit and MAX16822 constant current unit, by voltage sample unit, current Hall sampling unit, respectively to voltage and current sample, wherein the voltage sample unit consists of potential-divider network, and the current Hall sampling unit consists of Hall current sensor; The MSP430F149 single machine unit is responsible for the voltage, the current signal that collect are processed, then adjust the PWM duty ratio, and the pwm signal after adjusting is sent to conducting and the shutoff of switch mosfet pipe and then control inverse-excitation type DC/DC power conversion unit by buffer circuit; The MSP430F149 single machine unit also is responsible for voltage, the current signal collected judged whether to surpass safe range, if surpass send warning; The attached temperature sampling module of MSP430F149 single machine unit is responsible for system temperature is sampled; The attached LCD MODULE of MSP430F149 single machine unit be responsible for to system acquisition to voltage, electric current, the numerical value of temperature signal shown; The attached gsm module of MSP430F149 single machine unit is responsible for the MSP430F149 single machine unit is sent to monitor terminal to the warning message of voltage, electric current, temperature; The attached keyboard input module of MSP430F149 single machine unit is used for to single-chip microcomputer input related parameter values.
As shown in Figure 2, in main circuit, 165V～265V alternating current is through overcurrent fuse F1, thermistor, piezo-resistance RZ1, CX2, L3, access rectifier bridge stack DG1 after CX1, CX2 wherein, L3, CX1 forms the Surge suppression module, then capacitor C 7 is received C3 after filtering, R3, the RCD snubber circuit that D3 forms, then receive Yuan limit, inverse-excitation type DC/DC unit winding, its secondary winding is through R1, C1, D2, C4, L1, C5, access two-way MAX16822 constant current unit after the circuit that C6 forms, as shown in Figure 2, two-way MAX16822 constant current element circuit structure is identical, each road output voltage: 52V, output current: 330mA, before the constant current output unit, R5 is arranged, R6 forms potential-divider network and is responsible for the sampling of voltage signal and the P6.0 port that sampled signal is transported to the MSP430F149 single-chip microcomputer, by Hall current sensor ACS754 and attached components and parts C32 thereof, C33, R31, R32 forms, the current signal sampled is transported to the P6.1 port of MSP430.
As shown in Figure 3, P4, P5, P6, P8, P15 is respectively the P1 mouth of MSP430F149 single-chip microcomputer, the P2 mouth, the P3 mouth, the P5 mouth, P6 mouth extended pin, P9, P10, P11, P12 is the MSP430F149 chip carrier socket, C11 and C12, C15 and C16, three groups of filter circuits that C19 and C20 are respectively the MSP430F149 single-chip microcomputer make circuit working more stable, the socket that P19 is LCD MODULE, ASM1117 chip and attached components and parts P22 thereof, key5, C23, C24, C25 forms one group of auxiliary power circuit provides the 3.3V DC power supply for chip, key5, the button of key6 for drawing from the MSP430F149 single-chip microcomputer, R19, LEDO forms a road indicator light circuit, the interface that P23 is temperature sampling module 18B20, Y1, the crystal oscillator module that Y2 is the MSP430F149 single-chip microcomputer is respectively 32768HZ and 8MHZ.
As shown in Figure 4, after the PWM isolated drive circuit amplification that the pwm signal of exporting from MSP430F149 single-chip microcomputer P1.2 port forms through R25, Q2, R21, R22, optocoupler TLP250, R23, R24 and isolation, output pwm signal is controlled its shutoff to switching tube Q1.
As shown in Figure 5, P13, P17 form the socket of the ZIGEBEE minimum system of ZIGEBEE light modulation unit, the terminal lead-out wire that P14, P18 are the Z1GEBEE minimum system, the lead-out wire that 1,2,3,4 terminals of P21 socket are power line, Serial Port Line, ground wire, key1, C13, R14, key3, C21, R16, key4, C22, R17, be respectively three groups of key circuits, D5, R12 form one group of indicator light circuit.
Claims (7)
1. a novel intelligent high accuracy LED driving power, is characterized in that comprising: exchange input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, secondary rectification unit, ZIGEBEE light modulation unit, MAX16822 constant current unit, voltage sample unit, current Hall sampling unit, MSP430F149 single machine unit and attached temperature sampling module, LCD MODULE, keyboard input module gsm wireless communication module, the accessory power supply module of single-chip microcomputer, I/O expansion module, crystal oscillator module, auxiliary protection circuit; The 220V civil power is exported electric current after preliminary rectification then after the secondary rectification module carries out the secondary rectification through exchanging input rectifying filter unit, inverse-excitation type DC/DC power conversion unit, is transported to MAX16822 constant current unit and carries out constant current and control and make the current precision of output higher; Between secondary rectification unit and MAX16822 constant current unit, by voltage sample unit, current Hall sampling unit, respectively to voltage and current sample, wherein the voltage sample unit consists of potential-divider network, and the current Hall sampling unit consists of Hall current sensor; The MSP430F149 single machine unit is responsible for the voltage, the current signal that collect are processed, then adjust the PWM duty ratio, and the pwm signal after adjusting is sent to conducting and the shutoff of switch mosfet pipe and then control inverse-excitation type DC/DC power conversion unit by buffer circuit; The MSP430F149 single machine unit also is responsible for voltage, the current signal collected judged whether to surpass safe range, if surpass send warning; The attached temperature sampling module of MSP430F149 single machine unit is responsible for system temperature is sampled; The attached LCD MODULE of MSP430F149 single machine unit be responsible for to system acquisition to voltage, electric current, the numerical value of temperature signal shown; The attached gsm module of MSP430F149 single machine unit is responsible for the MSP430F149 single machine unit is sent to monitor terminal to the warning message of voltage, electric current, temperature; The attached keyboard input module of MSP430F149 single machine unit is used for to single-chip microcomputer input related parameter values.
2. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, it is characterized in that: described ZIGEBEE light modulation unit, two kinds of mode of operations are arranged, the one, the PWM dim signal that ZIGBEE light modulation unit is sent to MAX16822 constant current unit by the external remote control module carries out the control of duty ratio; The 2nd, the variation that the variation by automatic illuminant module by light changes into current potential is transported to ZIGBEE light modulation unit, and then changes the duty ratio that ZIGBEE light modulation unit sends to the PWM dim signal of MAX16822 constant current unit, realizes with an automatic light meter.
3. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, it is characterized in that: described inverse-excitation type DC/DC power conversion unit, its magnetic core of transformer material adopts the ultracrystallite material, make designed transformer energy conversion efficiency high, and volume of transformer is little.
4. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, it is characterized in that: described MAX16822 constant current unit adopts the MAX16822 chip, mainly realize two functions, one is to utilize the constant current function of MAX16822 chip to make the precision of output current be further enhanced; The another one function is to utilize the PWM input port of MAX16822, accepts the PWM dim signal by the input of ZIGEBEE light modulation unit.
5. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, it is characterized in that: described voltage sample unit adopts potential-divider network to carry out the sampling of output voltage signal and the signal sampled is transported to the A/D port of MSP430F149; Described current Hall sampling unit utilizes Hall current sensor to carry out the sampling of current signal and the signal sampled is transported to the A/D port of MSP430F149.
6. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, it is characterized in that, the electric potential signal of described MSP430F149 single machine unit receiver voltage sampling unit and the sampling of current Hall sampling unit, adjustment is input to the duty ratio of the pwm signal of switching tube, and the MSP430F149 single-chip microcomputer participates in the middle of the FEEDBACK CONTROL of driving power output current voltage fully and then realizes the control of constant-current voltage-stabilizing.
7. a kind of novel intelligent high accuracy LED driving power as claimed in claim 1, is characterized in that, the affiliated gsm module of described MSP430F149 single machine unit can send to monitor terminal by the electric current, voltage, the temperature information that collect.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735836A (en) * | 2013-12-18 | 2015-06-24 | 西安恒飞电子科技有限公司 | Voltage source for driving light-emitting diode lamps |
| CN104780644A (en) * | 2014-01-14 | 2015-07-15 | 江南大学 | Novel constant-current voltage-stabilization flyback type LED driving power supply |
| CN104955221A (en) * | 2015-05-27 | 2015-09-30 | 成都格瑞思文化传播有限公司 | Multifunctional LED drive power supply |
| CN105024558A (en) * | 2015-08-18 | 2015-11-04 | 重庆星联云科科技发展有限公司 | Single-stage LED drive power supply |
| CN105163426A (en) * | 2015-08-18 | 2015-12-16 | 上海源明照明科技有限公司 | Programming setting circuit used for setting output parameters of LED driving power supply |
| CN105458591A (en) * | 2016-01-06 | 2016-04-06 | 合肥长城制冷科技有限公司 | Three-phase rectifying wire tubular self-feeding novel welder |
| CN106211463A (en) * | 2016-08-02 | 2016-12-07 | 惠勇 | A kind of LED drive power based on Internet of Things |
| CN106357113A (en) * | 2016-11-02 | 2017-01-25 | 天津科技大学 | DC-DC (Direct Current-Direct Current) conversion intelligent numerical control constant-current power supply |
| CN106535409A (en) * | 2016-12-03 | 2017-03-22 | 河池学院 | Constant current switching power supply system for LED illumination |
| CN109712562A (en) * | 2019-03-06 | 2019-05-03 | 浙江雨林电子科技有限公司 | A kind of LED drive power of band DC5V auxiliary power supply |
| CN111818701A (en) * | 2020-07-30 | 2020-10-23 | 浙江欧易新能源有限公司 | Dimmable high-power LED driving power supply |
| CN112888110A (en) * | 2021-01-22 | 2021-06-01 | 江苏叶迪车灯股份有限公司 | Step-up and step-down type constant current driver for high-power LED module |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735836A (en) * | 2013-12-18 | 2015-06-24 | 西安恒飞电子科技有限公司 | Voltage source for driving light-emitting diode lamps |
| CN104780644B (en) * | 2014-01-14 | 2017-12-26 | 江南大学 | A kind of Novel constant-flow voltage stabilizing inverse-excitation type LED drive power |
| CN104780644A (en) * | 2014-01-14 | 2015-07-15 | 江南大学 | Novel constant-current voltage-stabilization flyback type LED driving power supply |
| CN104955221A (en) * | 2015-05-27 | 2015-09-30 | 成都格瑞思文化传播有限公司 | Multifunctional LED drive power supply |
| CN105024558A (en) * | 2015-08-18 | 2015-11-04 | 重庆星联云科科技发展有限公司 | Single-stage LED drive power supply |
| CN105163426A (en) * | 2015-08-18 | 2015-12-16 | 上海源明照明科技有限公司 | Programming setting circuit used for setting output parameters of LED driving power supply |
| CN105458591A (en) * | 2016-01-06 | 2016-04-06 | 合肥长城制冷科技有限公司 | Three-phase rectifying wire tubular self-feeding novel welder |
| CN106211463A (en) * | 2016-08-02 | 2016-12-07 | 惠勇 | A kind of LED drive power based on Internet of Things |
| CN106357113A (en) * | 2016-11-02 | 2017-01-25 | 天津科技大学 | DC-DC (Direct Current-Direct Current) conversion intelligent numerical control constant-current power supply |
| CN106535409A (en) * | 2016-12-03 | 2017-03-22 | 河池学院 | Constant current switching power supply system for LED illumination |
| CN109712562A (en) * | 2019-03-06 | 2019-05-03 | 浙江雨林电子科技有限公司 | A kind of LED drive power of band DC5V auxiliary power supply |
| CN111818701A (en) * | 2020-07-30 | 2020-10-23 | 浙江欧易新能源有限公司 | Dimmable high-power LED driving power supply |
| CN112888110A (en) * | 2021-01-22 | 2021-06-01 | 江苏叶迪车灯股份有限公司 | Step-up and step-down type constant current driver for high-power LED module |
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Application publication date: 20131211 |