CN102612233B - Multi-load driving control system based on fly-back power supply mode - Google Patents
Multi-load driving control system based on fly-back power supply mode Download PDFInfo
- Publication number
- CN102612233B CN102612233B CN201210081441.XA CN201210081441A CN102612233B CN 102612233 B CN102612233 B CN 102612233B CN 201210081441 A CN201210081441 A CN 201210081441A CN 102612233 B CN102612233 B CN 102612233B
- Authority
- CN
- China
- Prior art keywords
- load
- power supply
- voltage
- controlled switch
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention provides a multi-load driving control system based on a fly-back power supply mode. The system comprises: a fly-back power supply unit with a controlled switch tube, used for converting accessed power supply into direct current voltage based on the switching condition of the controlled switch tube; a constant unit, connected with the fly-back power supply unit and each load and used for converting the direct current voltage into at least one load voltage so as to supply power for each load, and regulating each load voltage based on a balance signal so as to keep the power supplied for each load constant; a sampling unit, used for collecting the voltage signal of the controlled switch tube and the power supply signal of each load; and a control unit, connected with the sampling unit, the constant unit and the controlled switch tube and used for outputting the balance signal and a switch signal for controlling the controlled switch tube to switch on and switch off based on a sampling result of the sampling unit. The multi-load driving control system based on the fly-back power supply mode has the advantage of capability of providing stable electric energy to the loads with different powers.
Description
Technical field
The present invention relates to drived control field, particularly relate to a kind of multi-load driving control system based on inverse-excitation type supply power mode.
Background technology
Light-emitting diode have energy-conservation, the life-span is long, the response time is short, volume is little, high reliability, is acknowledged as lighting source of future generation.In recent years, along with the raising of the cost performance of high-powered LED lamp, LED starts to be applied to automotive field, therefore, provides a kind of high power load driving control system, is those skilled in the art's problems to be solved.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of multi-load driving control system based on inverse-excitation type supply power mode, to provide drived control for the load that multiple power is different.
For achieving the above object and other relevant objects, the invention provides a kind of multi-load driving control system based on inverse-excitation type supply power mode, it comprises: inverse-excitation type power supply unit, it comprises controlled switch pipe, for the Power convert of access being become direct voltage based on the opening and closing of described controlled switch pipe; Constant cell, be connected with each load with described inverse-excitation type power supply unit, for described direct voltage is converted at least one load voltage to be each load supplying, and regulate each load voltage based on balanced signal, keep constant to make the power supply of each load; Sampling unit, for gathering the described voltage signal of controlled switch pipe and the power supply signal of each load; Control unit, is connected with described sampling unit, constant cell and controlled switch pipe, for exporting balanced signal based on the sampled result of described sampling unit and controlling the switching signal of described controlled switch pipe opening and closing.
Preferably, described inverse-excitation type power supply unit comprises: the Electro Magnetic Compatibility filter be connected with power supply, be connected described Electro Magnetic Compatibility filter output flyback transformer, be connected in series the controlled switch pipe of described flyback transformer primary coil and connect the current rectifying and wave filtering circuit of described flyback transformer output.
Preferably, described sampling unit comprises: no-voltage sample circuit, for gathering the zero passage voltage of described controlled switch pipe; Overvoltage sample circuit, for gathering the overvoltage signal of load; Balanced sample circuit, for gathering the current balanced sample signal of described constant cell.
Preferably, described control unit comprises DSP.
Preferably, described load comprises LED lamp for car, particularly high-powered LED lamp.
As mentioned above, the multi-load driving control system based on inverse-excitation type supply power mode of the present invention, has following beneficial effect: can need to provide corresponding stable electric energy to each load, to guarantee the stability of load running based on unequally loaded.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the multi-load driving control system based on inverse-excitation type supply power mode of the present invention.
Fig. 2 is shown as of the present invention a kind of preferably based on the structural representation of the multi-load driving control system of inverse-excitation type supply power mode.
Element numbers explanation
1 based on the multi-load driving control system of inverse-excitation type supply power mode
11 inverse-excitation type power supply units
111 controlled switch pipes
112 power supplies
113 electromagnetic compatibility mode filters
114 flyback transformers
115 current rectifying and wave filtering circuits
12 constant cells
13 sampling units
131 no-voltage sample circuits
132 overvoltage sample circuits
133 balanced sample circuit
14 control units
21,22 loads
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Fig. 1 shows the multi-load driving control system structural representation based on inverse-excitation type supply power mode of the present invention.The described multi-load driving control system 1 based on inverse-excitation type supply power mode comprises: inverse-excitation type power supply unit 11, constant cell 12, sampling unit 13 and control unit 14.
Described inverse-excitation type power supply unit 11 comprises controlled switch pipe 111, for the Power convert of access being become direct voltage based on the opening and closing of described controlled switch pipe 111.Wherein, described controlled switch pipe 111 comprises power switch pipe, preferably, includes but not limited to field effect transistor switch pipe.
Preferably, as shown in Figure 2, described inverse-excitation type power supply unit 11 comprises: power supply 112, Electro Magnetic Compatibility filter 113, flyback transformer 114, controlled switch pipe 111 and current rectifying and wave filtering circuit 115.
Particularly, described power supply 112 is connected with electromagnetic compatibility mode filter, so that the constant-current supply of stable output; Described flyback transformer 114 is connected to the output of described electromagnetic compatibility mode filter; Described controlled switch pipe 111 is serially connected with described flyback transformer 114 primary coil; Described current rectifying and wave filtering circuit 115 connects the output of described flyback transformer 114.Preferably, described flyback transformer 114 adopts can provide maximum rated power output to be the flyback transformer of 30W.
Described constant cell 12 is connected with each load 2 with described inverse-excitation type power supply unit 11, for described direct voltage is converted at least one load voltage to power for load 21 and load 22, and regulate each load voltage based on balanced signal, keep constant to make the power supply of load 21 and load 22.Wherein, load 21 and load 22 comprise the sub-assembly etc. of Single Electron element or multiple electronic component; Preferably, load 21 and load 22 comprise LED lamp for car separately, and more preferably, described LED lamp for car also comprises high-powered LED lamp.
Wherein, load 21 and load 22 can be same specification load, also can be the load of different size, and such as, load 21 and load 22 are the LED that rated power is 3w; Again such as, load 21 for rated power be the LED of 2w; Load 22 for rated power be the LED etc. of 4w.
Preferably, described constant cell 12 comprises controlled variable resistance, and it regulates the resistance value of controlled variable resistance based on balanced signal, thus changes the voltage exporting load 21 and load 22 to, so that load current is constant.
Preferably, described constant cell 12 comprises the circuit that controlled switch and fixed resistance are formed, and it controls the switch of controlled switch based on balanced signal, changes the voltage exporting load 21 and load 22 to thus.
It should be noted that, those skilled in the art should understand that, the circuit structure of constant cell described above only just lists, but not limitation of the present invention, in fact, anyly direct voltage can be converted at least one load voltage so that for each load supplying, and regulate each load voltage based on balanced signal, with the circuit making the power supply of each load keep constant, all within the scope of the present invention.
Described sampling unit 13 is for gathering the described voltage signal of controlled switch pipe 111 and the power supply signal of each load.Wherein, described voltage signal includes but not limited to the zero voltage signal of described controlled switch pipe 111.Described power supply signal includes but not limited to: the overvoltage signal etc. of the current current signal of the current voltage signal of each load, each load, each load.Preferably, as shown in Figure 2, described sampling unit 13 comprises no-voltage sample circuit 131, overvoltage sample circuit 132, balanced sample circuit 133.
Described no-voltage sample circuit 131 is for gathering the zero passage voltage of described controlled switch pipe 111.Described no-voltage sample circuit 131 comprises any circuit that can gather the zero passage voltage of described controlled switch pipe 111.Preferably, described no-voltage sample circuit 131 comprises the edge sense circuit be connected with the drain electrode of described controlled switch pipe 111, gathers the zero passage voltage of described controlled switch pipe 111 thus.
Described overvoltage sample circuit 132 is for gathering the overvoltage signal of load 21 and load 22.Wherein, described overvoltage sample circuit 132 comprises any circuit that can gather the overvoltage signal of load 2.Preferably, described overvoltage sample circuit 132 comprises the bleeder circuit and voltage comparator etc. that are made up of resistance.
Described balanced sample circuit 133 is for gathering the current balanced signal of described constant cell 12.Wherein, described current balanced signal comprises the signal be associated with each load current, preferably, includes but not limited to: the current flow etc. being serially connected in the little sampling resistor in load circuit.
Described balanced sample circuit 133 comprises any circuit that can gather the current balanced signal of described constant cell 12.Preferably, described balanced sample circuit 133 comprises the little sampling resistor be serially connected in respectively in loop that described constant cell 12 is connected with load 21 and load 22, to calculate based on the voltage of those little sampling resistors and resistance the electric current flowing through each load.
Described control unit 14 is connected with described sampling unit 13, constant cell 12 and controlled switch pipe 111, for exporting balanced signal based on the sampled result of described sampling unit 13 and control the switching signal of described controlled switch pipe 111 opening and closing.Described control unit 14 be a kind of can according to the program stored in advance, automatically the modernization intelligent electronic device of numerical computations, is carried out at high speed, its hardware includes but not limited to microprocessor, FPGA, embedded device etc., and preferably, described control unit 14 comprises DSP.
Particularly, when the power supply signal of each load that described sampling unit 13 gathers comprises the current magnitude of voltage of each load, then described control unit 14 determines balanced signal based on each load current magnitude of voltage and each load self comparing of rated voltage; When the power supply signal of each load that described sampling unit 13 gathers comprises the current current value of each load, then described control unit 14 based on the current current value and each load self of each load rated voltage with the comparing of ratio of resistance determine balanced signal etc.Such as, when the rated voltage of the current magnitude of voltage of load 21 lower than load 21 self, described control unit 14 exports the balanced signal reducing the controlled variable resistance resistance be serially connected in load 21 loop; Again such as, when the ratio of the current current value of load 22 higher than the rated voltage of load 22 self and resistance, described control unit 14 exports the balanced signal disconnecting the controlled switch be attempted by load 22 loop, wherein, this controlled switch is connected in series with a resistance, make the all-in resistance in load 22 loop increase thus, and then reduce the electric current in load 22 loop.
Have again, when the voltage signal of the described controlled switch pipe 111 that described sampling unit 13 gathers is for " 0 ", then described control unit 14 to reset pulse width modulation cycle counter based on described no-voltage, then exports the corresponding switching signal controlling the opening and closing of described controlled switch pipe 111 based on the pulse width modulation cycle counter again counted; When the voltage signal of the described controlled switch pipe 111 that described sampling unit 13 gathers is non-" 0 ", then described control unit 14 exports the switching signal that described controlled switch pipe 111 is disconnected based on described non-zero voltage.
Also have, when described sampling unit 13 collects the overvoltage signal of a load, described control unit 14 exports the switching signal that controlled switch pipe 111 is disconnected, to reduce based on the adjustment of the opening and closing frequency to described controlled switch pipe 111 voltage exporting this load to.
The working method of the described multi-load driving control system 1 based on inverse-excitation type supply power mode is as follows:
First, power supply 112 in described inverse-excitation type power supply unit 11 exports stabilized power source through Electro Magnetic Compatibility filter 113, described flyback transformer 114 exports predetermined alternating voltage based on controlled switch pipe 111 with preset frequency opening and closing, described predetermined alternating voltage exports predetermined direct current voltage through current rectifying and wave filtering circuit 115, described current rectifying and wave filtering circuit 115 is connected with each load through constant cell 12, in order to export constant current to each load, meanwhile, balance Acquisition Circuit in described sampling unit 13 gathers the balanced signal in constant cell 12, no-voltage sample circuit 131 gathers the zero voltage signal of described controlled switch pipe 111, overvoltage sample circuit 132 gathers the overvoltage signal of load 21 and load 22, sampled result is transported to described control unit 14 by described sampling unit 13, described control unit 14 1 aspect exports the switching signal of the opening and closing controlling controlled switch pipe 111 based on zero voltage signal and overvoltage signal, so that the output of adjustment inverse-excitation type power supply unit 11 in real time, the balanced signal after adjustment is exported to described constant cell 12 on the other hand based on current balanced signal, with the electric current making constant cell 12 adjustment in real time export to load 21 and load 22, to guarantee further to provide stabilized power source to load 21 and load 22.
In sum, the opening and closing controlling described controlled switch pipe based on the control unit in the multi-load driving control system of inverse-excitation type supply power mode based on sampled result of the present invention, the output voltage of adjustment inverse-excitation type power supply unit that can be real-time, stable predeterminated voltage is provided to make described inverse-excitation type power supply unit, simultaneously, controlled switch pipe adopt field effect transistor can be sensitiveer responding to switch signal, in addition, described constant cell is based on the real-time electric current adjusting the output to each load of balanced signal, the load constant current hold separately of different capacity can be made, drastically increase the stability of load running.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (5)
1. based on a multi-load driving control system for inverse-excitation type supply power mode, it is characterized in that, the described multi-load driving control system based on inverse-excitation type supply power mode at least comprises:
Inverse-excitation type power supply unit, it comprises controlled switch pipe, for the Power convert of access being become direct voltage based on the opening and closing of described controlled switch pipe;
Constant cell, be connected with each load with described inverse-excitation type power supply unit, for described direct voltage is converted at least one load voltage to be each load supplying, and regulate each load voltage based on balanced signal, to make the power supply of each load keep constant, wherein, described constant cell comprises controlled variable resistance, it regulates the resistance value of controlled variable resistance based on balanced signal, thus changes the voltage exporting each load to, so that each load current is constant;
Sampling unit, for gathering the described voltage signal of controlled switch pipe and the power supply signal of each load;
Control unit, is connected with described sampling unit, constant cell and controlled switch pipe, for exporting balanced signal based on the sampled result of described sampling unit and controlling the switching signal of described controlled switch pipe opening and closing;
Described sampling unit comprises: no-voltage sample circuit, for gathering the zero passage voltage of described controlled switch pipe; Overvoltage sample circuit, for gathering the overvoltage signal of load; Balanced sample circuit, for gathering the current balanced sample signal of described constant cell.
2. the multi-load driving control system based on inverse-excitation type supply power mode according to claim 1, is characterized in that: described inverse-excitation type power supply unit comprises: the Electro Magnetic Compatibility filter be connected with power supply, be connected described Electro Magnetic Compatibility filter output flyback transformer, be connected in series the controlled switch pipe of described flyback transformer primary coil and connect the current rectifying and wave filtering circuit of described flyback transformer output.
3. the multi-load driving control system based on inverse-excitation type supply power mode according to claim 1, is characterized in that: described control unit comprises DSP.
4. the multi-load driving control system based on inverse-excitation type supply power mode according to claim 1, is characterized in that: described load comprises LED lamp for car.
5. the multi-load driving control system based on inverse-excitation type supply power mode according to claim 4, is characterized in that: described LED lamp for car comprises high-powered LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081441.XA CN102612233B (en) | 2012-03-23 | 2012-03-23 | Multi-load driving control system based on fly-back power supply mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081441.XA CN102612233B (en) | 2012-03-23 | 2012-03-23 | Multi-load driving control system based on fly-back power supply mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102612233A CN102612233A (en) | 2012-07-25 |
| CN102612233B true CN102612233B (en) | 2015-01-14 |
Family
ID=46529293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210081441.XA Active CN102612233B (en) | 2012-03-23 | 2012-03-23 | Multi-load driving control system based on fly-back power supply mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102612233B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105357814B (en) * | 2015-08-20 | 2018-08-28 | 深圳天源中芯半导体有限公司 | A kind of peak current detection circuit and method for constant current driver circuit for LED |
| CN106205509B (en) * | 2016-09-22 | 2018-11-13 | 京东方科技集团股份有限公司 | Driving circuit and driving method, backlight, display device and ignition device |
| CN110601362A (en) * | 2019-09-18 | 2019-12-20 | 深圳市三亿电气科技有限公司 | Intelligent management system for safe power utilization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202050563U (en) * | 2011-02-17 | 2011-11-23 | 昂宝电子（上海）有限公司 | Flyback dimming LED (light-emitting diode) drive circuit |
| CN202143265U (en) * | 2011-07-12 | 2012-02-08 | 科博达技术有限公司 | LED lamp controller based on digit PWM control technique |
| CN202524607U (en) * | 2012-03-23 | 2012-11-07 | 上海信耀电子有限公司 | Multi-load driving control system based on fly-back power supply mode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201690655U (en) * | 2010-05-28 | 2010-12-29 | 电子科技大学 | Flyback road lamp illuminating LED constant-current driving power supply with intelligent dimming function |
-
2012
- 2012-03-23 CN CN201210081441.XA patent/CN102612233B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202050563U (en) * | 2011-02-17 | 2011-11-23 | 昂宝电子（上海）有限公司 | Flyback dimming LED (light-emitting diode) drive circuit |
| CN202143265U (en) * | 2011-07-12 | 2012-02-08 | 科博达技术有限公司 | LED lamp controller based on digit PWM control technique |
| CN202524607U (en) * | 2012-03-23 | 2012-11-07 | 上海信耀电子有限公司 | Multi-load driving control system based on fly-back power supply mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102612233A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203675387U (en) | LED drive circuit for providing TRIAC holding current by using controllable current source | |
| CN102762011B (en) | LED (Light Emitting Diode) constant-current dimming drive circuit device | |
| CN205105426U (en) | Automatic linear constant current LED drive circuit of full voltage sectional type of switching mode | |
| CN201307959Y (en) | Impulse width regulating circuit and corresponding LED switch power supply as well as LED lighting circuit | |
| CN102364991A (en) | Switching power supply controller for constant current driving of LED by primary side control and method for constant current driving of LED | |
| CN204119610U (en) | Drive circuit for improving LED stroboscopic effect | |
| CN103582258A (en) | LED driving device and method | |
| CN101868078A (en) | Single-power level LED constant current driving device with high power factor | |
| EP3720253A1 (en) | Power distribution | |
| CN201499095U (en) | Power supply capable of reducing power consumption under no-load state | |
| CN105259382A (en) | Multi-transformation ratio current transformer unified multiplying power metering method and device | |
| CN104021978A (en) | Constant-current charging switching device for switching-on switching-off capacitor of permanent magnet vacuum switch and control method thereof | |
| CN102612233B (en) | Multi-load driving control system based on fly-back power supply mode | |
| CN104853476A (en) | LED dimming circuit and LED lamp | |
| CN102612232B (en) | Driving control system with multiple LED (light emitting diode) loads for automobile | |
| CN107925349A (en) | PFC module for intermittent conductive pattern | |
| CN105101539A (en) | Light-emitting diode (LED) constant current driving circuit | |
| CN202524607U (en) | Multi-load driving control system based on fly-back power supply mode | |
| CN104661408A (en) | LED dimming circuit and LED lamp | |
| CN102083267B (en) | Electricity saving device | |
| CN202276293U (en) | An intelligent switch power source with constant output power | |
| CN103025017B (en) | Light-emitting diode (LED) driving circuit based on parallel switch control | |
| CN106487246A (en) | Constant pressure and flow AC-DC converter | |
| CN202663316U (en) | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current | |
| CN104837276B (en) | The LED wireless control systems and control method of a kind of compatible phase-cut dimming |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |