CN101582239B - Preset value switch stabilized voltage supply, controller, distributor and distributing system - Google Patents
Preset value switch stabilized voltage supply, controller, distributor and distributing system Download PDFInfo
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- CN101582239B CN101582239B CN2009100806303A CN200910080630A CN101582239B CN 101582239 B CN101582239 B CN 101582239B CN 2009100806303 A CN2009100806303 A CN 2009100806303A CN 200910080630 A CN200910080630 A CN 200910080630A CN 101582239 B CN101582239 B CN 101582239B
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Abstract
The invention discloses a preset value switch stabilized voltage supply, a controller, a distributor and a distributing system, the preset value switch stabilized voltage supply comprises a data control module and at least one switch stabilized voltage supply; the data control module sets a first signal input interface, receives first signals of each external load input condition for processing and outputs second signals to the switch stabilized voltage supply that is connected with corresponding load phase; a pulse width modulator is connected with the data control module and outputs a PWM signal to an MOSFET regulation/control circuit according to the second signals; in accordance with the PWM signal, the MOSFET regulation/control circuit switches switch statuses of at least one power switching tube MOSFET and transformation time between the switch statuses thereof, regulates input voltage of a transformer, outputs to a rectification filter circuit in a transformation way, and outputs one or multiple groups of stabilized voltages for each load after the rectifying and wave-filtering. The invention can process grey scale display normally and stably, ensure brightness and depth andachieve excellent display effect.
Description
Technical field
The present invention relates to power supply, in particular, a kind of preset value switch stabilized voltage supply, adopt a kind of controller of this preset value switch stabilized voltage supply, and a kind of divider and a kind of distribution system that adopt this preset value switch stabilized voltage supply.
Background technology
In the prior art, LED unit for each LED lamp string in the load, perhaps, for each row LED unit of the various display screens that comprise abnormity screen or respectively be listed as the LED unit, its control method normally adopts data distributor, and the LED unit according to each lamp string, each row or each row is divided into data queue with data, adopt certain form, send to the LED unit of each lamp string, each row or each row.
For example, for a display screen, can adopt one or more data distributors, with the one-frame video data of input, be divided into the data queue of several rows, correspondence sends to each row LED unit respectively; Simultaneously, for each row LED unit, also adopt a Switching Power Supply to power at least; Thereby on this display screen, show this frame video data, be provided with mu balanced circuit in the Switching Power Supply, be used for the bigger or unusable supply voltage of fluctuation is stabilized in its range of set value, make each LED unit can be in operate as normal under the rated operational voltage.
Generally, a Switching Power Supply may connect up to a hundred or hundreds of LED unit.Power supply output changes according to the demonstration needs of LED unit; For each LED unit, this Switching Power Supply output power is stable, and Switching Power Supply generally is according to the requirement of each LED unit feedback in the load, regulates output current or voltage, satisfies electric current or the power demand of each LED unit in the different periods.
For example; when showing a certain picture; because each LED unit content displayed is inconsistent; the brightness difference that needs; so the electric current or the power difference of each LED unit needs; because Switching Power Supply is the requirement according to each LED unit feedback in the load; adjusting output current or voltage; and each LED unit of load is just to feed back to behind output current or voltage to Switching Power Supply; because feedback needs the regular hour, therefore the LED unit that needs for each different brightness can cause power output time-delay; thereby make demonstration undesired or unstable, influenced display effect.
And; when the shown part in a certain LED unit of display frame; when the front and back contrast is stronger; because the brightness of this LED unit changes greatly; and the voltage rise time can be caused hysteresis phenomenon significantly to this; thereby it is undesired or unstable to cause gray scale to show, brightness and depth descends, and has influenced display effect.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is because load feedback needs the regular hour; cause power output time-delay; and; because the brightness of LED unit changes greatly; and the voltage rise time can be caused hysteresis phenomenon significantly to this; thereby it is undesired or unstable to cause gray scale to show, brightness and depth descends, display effect is poor.
Technical scheme of the present invention is as follows: a kind of preset value switch stabilized voltage supply, wherein, comprise Data Control module and at least one switching power supply, and described switching power supply is used to outside at least one load to power; Described Data Control module is provided with first signal input interface, be used for by described first signal input interface, receive first signal as outside each load initial conditions, by of the setting of described Data Control module according to each switching power supply, handle, the output secondary signal is to the described switching power supply that is connected with corresponding load; The MOSFET circuit for regulating and controlling that described switching power supply comprises transformer, current rectifying and wave filtering circuit, pulse-width modulator and at least one power P channel mosfet (MetalOxide Semicoductor Field Effect Transistor, metal oxide semiconductor field effect tube) and at least one power N-channel MOS FET are set; Described pulse-width modulator is connected with described Data Control module, is used for according to described secondary signal, and output pwm signal is to described MOSFET circuit for regulating and controlling; Described MOSFET circuit for regulating and controlling one end is connected with the external power source negative pole, and the other end is connected with described transformer one end, and the described transformer other end is connected with external power source is anodal; Be used for by according to described pwm signal, switch the on off state of at least one power switch pipe MOSFET and the switching time between the on off state thereof, to adjust the input voltage of described transformer, transformation outputs to described current rectifying and wave filtering circuit, exports one or more groups burning voltage for each load behind the rectifying and wave-filtering; Wherein, described initial conditions and described output condition comprise at least respectively electric current, voltage, power one of them.
Described preset value switch stabilized voltage supply, wherein, at least one MOSFET schottky diode of also connecting is used to adjust switching time of described switch mosfet state.
Described preset value switch stabilized voltage supply, wherein, described MOSFET circuit for regulating and controlling comprises a compensating circuit, is used to adjust and stablize the operating voltage of described MOSFET.
Described preset value switch stabilized voltage supply, wherein, described compensating circuit is a temperature-compensation circuit, is used for according to variation of temperature, adjusts and stablize the operating voltage of described MOSFET.
Described preset value switch stabilized voltage supply, wherein, described MOSFET circuit for regulating and controlling also comprises an inductor, it is connected with described compensating circuit, is used to respond to the variation that pre-sets that obtains generation, starts described compensating circuit.
Described preset value switch stabilized voltage supply, wherein, described Data Control module also is connected with each load, is used for determining the state of each load, according to the state of each load and the initial conditions of requirement thereof, described first signal is adjusted into described secondary signal.
A kind of controller wherein, comprises an above-mentioned arbitrary described preset value switch stabilized voltage supply of right and a control module; Described control module is used to receive outer video signal, and arrangement sends to described preset value switch stabilized voltage supply as first signal of outside each load initial conditions.
A kind of divider wherein, comprises control module, allocation units and at least one above-mentioned preset value switch stabilized voltage supply; Described control module is used to receive outer video signal, and arrangement sends to described allocation units as first signal of outside each load initial conditions; Described allocation units are connected with outside at least one group of LED unit, are used for carrying out packet according to described signal data, and each group data is transferred to the outside corresponding LED unit of respectively organizing respectively; At least one preset value switch stabilized voltage supply also is connected with at least one group of LED unit of outside, is used for according to described signal data or respectively organizes the situation of LED unit, adjusts output condition, for each group LED unit powers; Wherein, described output condition comprise at least output current, output voltage, output power one of them.
Described divider, wherein, described control module also is provided with a configuration interface and at least one cascade module and corresponding asynchronous interface thereof, gang mould pieces at different levels are respectively applied for a kind of cascade mode are set, and, be connected with an asynchronous interface of other divider by its corresponding asynchronous interface according to a certain cascade mode.
A kind of distribution system wherein, comprises at least one as above arbitrary described divider, and some groups of LED unit; Described allocation units also are connected with at least one group of LED unit; Arbitrary preset value switch stabilized voltage supply also is connected with at least one group of LED unit.
Adopt such scheme, the present invention is by a Data Control module is set, before switch power supply output current or power, made before load claims, Switching Power Supply has been known to be needed to regulate output current or voltage, thereby adjusts output power in advance, avoids time-delay; And, by switching power supply is set, described switching power supply is provided with the MOSFET circuit for regulating and controlling of at least one power P channel mosfet and at least one power N-channel MOS FET, by pulse-width modulator and the regulation and control of described MOSFET circuit for regulating and controlling, adjust output condition synchronously with load, show thereby normally and stably carry out gray scale, ensured brightness and depth, guaranteed display effect.
Description of drawings
Fig. 1 is the synoptic diagram of embodiment 1 among the present invention;
Fig. 2 is the synoptic diagram of embodiment 2 among the present invention;
Fig. 3 is the synoptic diagram of embodiment 3 among the present invention;
Fig. 4 is the synoptic diagram of embodiment 5 among the present invention;
Fig. 5 is the synoptic diagram of embodiment 6 among the present invention;
Fig. 6 is the synoptic diagram of embodiment 7 among the present invention;
Fig. 7 is the synoptic diagram of embodiment 8 among the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, present embodiment provides a kind of preset value switch stabilized voltage supply, comprises Data Control module and at least one switching power supply.
Described Data Control module is provided with first signal input interface, first signal as outside each load initial conditions, pass through netting twine, the optical fiber equisignal line transmits, and input in the described Data Control module by described first signal input interface, described Data Control module is according to described first signal of input, obtain the initial conditions of the desired day part of outside each load, and, described Data Control module is according to the setting of described switching power supply, as, in described Data Control module, directly import the data message of each switching power supply in the output condition of day part, described Data Control module is according to the output condition of described switching power supply and the difference that respectively loads on corresponding desired initial conditions of period, and output is used to adjust the secondary signal of described switching power supply initial conditions.
Described switching power supply is connected with some loads of outside, is used to each outside load to power, and each outside load can be each LED unit, perhaps other electronic devices and components.
By the secondary signal input interface is set on described switching power supply, receive described secondary signal, described Switching Power Supply is according to described secondary signal, adjust the output condition of the described Switching Power Supply of day part, make described output condition and respectively to load on desired initial conditions of corresponding period consistent, for each load is powered.
Described switching power supply comprises transformer, current rectifying and wave filtering circuit, pulse-width modulator and at least one power P channel mosfet is set and the MOSFET circuit for regulating and controlling of at least one power N-channel MOS FET.
Adopt dual switch mosfet, soon the P channel mosfet is connected to drain electrode with the source electrode of N-channel MOS FET, the connection of base stage is then identical with traditional connection of N-channel MOS FET with the P channel mosfet, like this under most input voltage, P channel mosfet and N-channel MOS FET conducting all simultaneously, if conducting resistance on one side rises arbitrarily, then the conducting resistance of another side will descend, so the resistance of switch almost can keep definite value, reduce the signal distortion.Can select each concrete MOSFET according to different application.
Described pulse-width modulator is connected with described Data Control module, be used to receive described secondary signal, and according to described secondary signal, output pwm signal is to described MOSFET circuit for regulating and controlling, described MOSFET circuit for regulating and controlling one end is connected with the external power source negative pole, and the other end is connected with described transformer one end, and described MOSFET circuit for regulating and controlling is according to described pwm signal, control the on off state of MOSFET and the switching time between the on off state, adjust described power of transformer input voltage.
The described transformer other end is connected with external power source is anodal; Be used for adjusted power input voltage transformation, and transformation outputs to described current rectifying and wave filtering circuit, needed one or more groups burning voltage of output load behind rectifying and wave-filtering is for each load is powered.
Wherein, described initial conditions comprise at least input current, input voltage, power input one of them.For example, initial conditions is input voltage or is input voltage and power input.
Generally, each described switching power supply can be connected with a plurality of loads, and for example, described load is the LED unit, and each described switching power supply can connect up to a hundred or hundreds of LED unit.
Data Control module in the present embodiment and switching power supply are arranged in the box body, be a preset value switch stabilized voltage supply, and be electrically connected with external power source by cable, simultaneously, be connected by netting twine, optical fiber etc. and external control unit or control system and each load signal, to realize the transmission of power supply and signal.
In the present embodiment, by a Data Control module is set in preset value switch stabilized voltage supply, before switching power supply output current or power, export in the signal of load by described Data Control module in advance, obtain the electric current or the power demand of the desired day part of each load, made before load claims, Switching Power Supply has been known needs to regulate output current or voltage, and, by the MOSFET circuit for regulating and controlling of at least one power P channel mosfet and at least one power N-channel MOS FET is set, make described preset value switch stabilized voltage supply export one or more groups stable voltage, thereby adjust output power in advance, avoid time-delay, supply voltage is stable, and display effect is good.
Embodiment 2
As shown in Figure 2, on the basis of above-mentioned each example, in described MOSFET circuit for regulating and controlling, at least one MOSFET schottky diode of also connecting.
Schottky diode has advantages such as switching frequency height, reverse recovery time is short, forward voltage drop is low, by at the schottky diode of connecting between switch mosfet pipe and the power supply positive pole, can be used to adjust the switching time of described switch mosfet state, make the described switching power supply can be in underloading, i.e. load of Lian Jieing more after a little while, adopt discontinuous mode to power saves energy.
Embodiment 3
As shown in Figure 3, on the basis of above-mentioned each example, described MOSFET circuit for regulating and controlling comprises a compensating circuit, and described compensating circuit has compensating action, can be used to adjust and stablize the operating voltage of described MOSFET.
For example, the frequency compensation in the amplifying circuit can reduce clock and phase differential by frequency compensation, makes the input and output Frequency Synchronization, thereby reaches the purpose of the operating voltage of adjustment and stable MOSFET.
And for example, described compensating circuit can also be a temperature-compensation circuit, because, the internal resistance value of MOSFET under conducting state will change when temperature variation, thereby influence the operating voltage of MOSFET, therefore, the temperature-compensation circuit of connecting, can be used for adjusting and stablize the operating voltage of described MOSFET according to variation of temperature.
Such as, 1 ℃ of the every variation of temperature, the internal resistance value of most MOSFET under conducting state will change 0.5%, therefore can adopt The Cold-Junction Compensation for Thermocouple, and The Cold-Junction Compensation for Thermocouple adopts usually at electric bridge that is made of thermal resistance of cold junction series connection.Three brachium pontis of electric bridge are measuring resistance, have a brachium pontis to be made of platinum resistance thermometer sensor, or copper thermistor in addition.When the cold junction temperature variation, the thermoelectrical potential that thermopair produces also will change, and the thermal resistance resistance in the electric bridge of connecting this moment also will change and make the voltage at electric bridge two ends also to change.
For example, when cold junction temperature raises, the thermoelectrical potential that thermopair produces also will reduce, and the thermal resistance resistance in the electric bridge of connecting this moment also will change and make the voltage at electric bridge two ends also to raise.
If parameter is selected well and wiring is correct, the voltage that electric bridge produces just in time varies with temperature with thermoelectrical potential and the amount that changes equates that total output voltage (electromotive force) in whole thermocouple measurement loop has just in time truly reflected measured temperature value.The Cold-Junction Compensation for Thermocouple principle that Here it is.
Embodiment 4
On the basis of embodiment 3, described MOSFET circuit for regulating and controlling also comprises an inductor, and it is connected described inductor with described compensating circuit, is used to respond to the variation that pre-sets that obtains generation, start described compensating circuit, thereby adjust and stablize the operating voltage of described MOSFET.
For example, described inductor is a temperature inductor, temperature when the external world changes, when reaching 1 ℃ as variation of temperature, described temperature inductor is connected the circuit between described compensating circuit and each MOSFET, starts described compensating circuit, passes through compensating circuit, adjust the operating voltage of MOSFET, make the operating voltage of MOSFET be in steady state (SS).
And for example, described inductor is set to light-operated inductor, when extraneous light variation reaches the intensity of setting, described light-operated inductor is by the power of the extraneous light of induction, start described compensating circuit, by compensating circuit, adjust the operating voltage of MOSFET, make the operating voltage of MOSFET be in steady state (SS).
Perhaps, described inductor can also be set to an infrared remote receiver, and a remote manipulator by people's control can be set, and described remote manipulator sends infrared signal, and described infrared remote receiver receives infrared signal, and starts described compensating circuit.
Perhaps, described inductor is an acoustic control inductor, and when the variation of external sound reached the intensity that presets, described acoustic control inductor started described compensating circuit by the variation of induction sound.
Perhaps, described inductor is automatically controlled inductor, by regulating the size of electric current, when the variation of electric current reaches the intensity that presets, and by described automatically controlled inductor induction current variation, starts described compensating circuit.
Perhaps, described inductor can also be the networking inductor, send instruction by remote administrator by network, and start described compensating circuit, for example, carry out the command signal transmission by netting twine commonly used, connect circuit between described compensating circuit and each MOSFET by command signal, start described compensating circuit, pass through compensating circuit, adjust the operating voltage of MOSFET, make the operating voltage of MOSFET be in steady state (SS).
Embodiment 5
As shown in Figure 4, on the basis of above-mentioned each example, on described Data Control module, first signal output interface is set also, after described Data Control module receives described first signal data, again by described first signal output interface, described first signal data is passed to each load that is connected with described switching power supply, and, control each load according to described first signal data.
Each described switching power supply can be connected with a plurality of loads, and for example, described load is the LED unit, and each described Switching Power Supply can connect up to a hundred or hundreds of LED unit.Described Data Control module is controlled these up to a hundred or hundreds of LED unit by the described first signal output interface output signal data, can be worked as required in each LED unit.
Described Data Control module also receives each loading condition by circuit is set, and the state of definite each load, obtain respectively to load on the initial conditions of day part, and, described Data Control module is according to the initial conditions that respectively loads on day part, load on the difference of corresponding desired initial conditions of period with this, described first signal is adjusted into described secondary signal.
Described initial conditions comprise at least input current, input voltage, power input one of them; For example, described initial conditions is an input current; Perhaps, described initial conditions is input voltage and input current etc.
For example, between described Data Control module and each load, one feedback circuit is set, described feedback circuit obtains respectively to load on the initial conditions of a certain period, and feeds back to described Data Control module, and described Data Control module is according to described first signal, the desired initial conditions of each load that obtains, described Data Control module is adjusted into described secondary signal according to the difference of two initial conditions with described first signal, and passes to described switching power supply.
In addition, described Data Control module outputs to the signal wire of outside a certain load, with each load of this group, as, each LED units in series or parallel connection.
In the present embodiment, by a Data Control module is set in preset value switch stabilized voltage supply, described Data Control module receives each loading condition by circuit is set, and the state of definite each load, obtain respectively to load on the initial conditions of day part, and according to the initial conditions of load, first signal of input is adjusted into secondary signal, and by described pulse-width modulator and the MOSFET circuit for regulating and controlling that at least one power P channel mosfet and at least one power N-channel MOS FET are set, adjust the input voltage of switching power supply, make described preset value switch stabilized voltage supply export one or more groups and the corresponding burning voltage of each load initial conditions, avoided time-delay, supply voltage is stable, and display effect is good.
Embodiment 6
As shown in Figure 5, present embodiment provides a kind of controller, and it comprises a preset value switch stabilized voltage supply and a control module.
Preset value switch stabilized voltage supply in the present embodiment can be embodiment 1 to 5 arbitrary described preset value switch stabilized voltage supply.Control module passes through signal line described in the present embodiment, be connected with the vision signal generating means of outside, be used to receive the vision signal that the outer video signal generating means produces, and described vision signal put in order, produce first signal, and send to described preset value switch stabilized voltage supply as outside each load initial conditions.
Described preset value switch stabilized voltage supply of present embodiment and described control module can be made into a box body respectively in actual applications, these two box bodys can interconnect by netting twine, optical fiber, cable or other power supplys, signal wire, and each interface is set in described preset value switch stabilized voltage supply, can pass through netting twine, optical fiber, cable or other power supplys, signal wire and each load, as, each is organized the LED unit and is connected.
Perhaps, described controller can be made into a box body in actual applications, is about to described preset value switch stabilized voltage supply and described control module and is arranged in the box body, can pass through netting twine, optical fiber, cable or other power supplys, signal wire and with each load, as, each is organized the LED unit and is connected.
For example, at described controller hub HUB interface and power interface are set, by grafting netting twine and power lead, for example, the netting twine and the power lead of grafting RJ45 interface are connected with each group LED unit, to realize the transmission of power supply and signal.
Embodiment 7
As shown in Figure 6, present embodiment provides a kind of distribution system, and it comprises at least one divider, and some groups of LED unit; And present embodiment also provides a kind of divider, and this divider comprises preset value switch stabilized voltage supply, control module and allocation units.
Wherein, in Fig. 6, divider only comprises preset value switch stabilized voltage supply, control module and allocation units; Do not comprise and respectively organize the LED unit, and organize being connected of LED unit with each.Described preset value switch stabilized voltage supply is embodiment 1 to 5 arbitrary described preset value switch stabilized voltage supply, described preset value switch stabilized voltage supply, described control module and described allocation units can be made into a box body respectively in actual applications, these three box bodys can interconnect by netting twine, optical fiber, cable or other power supplys, signal wire, and each interface is set in described allocation units, can be connected with each group LED unit by netting twine, optical fiber, cable or other power supplys, signal wire; Perhaps, described divider can be made into a box body in actual applications, can be connected with each group LED unit by netting twine, optical fiber, cable or other power supplys, signal wire.For example, at described divider hub HUB interface and power interface are set, by grafting netting twine and power lead, for example, the netting twine and the power lead of grafting RJ45 interface are connected with each group LED unit, to realize the transmission of power supply and signal.
Wherein, described divider is packet, transmission, sends to by display order and respectively organizes the LED unit; For each LED unit of a certain group, can be decoded as pulse square wave by a driver element with the data that receive, produce the displacement clock, be sent to a chip for driving; According to pulse square wave, the latch signal in displacement clock and the data is controlled corresponding LED lamp by this chip for driving.
Described control module can be provided with at least one signaling interface, is used to receive outside vision signal; Be connected with described allocation units by described control module, described vision signal is sent to described allocation units.
Perhaps, as shown in Figure 6, described control module can also be provided with a configuration interface and at least one cascade module and corresponding asynchronous interface thereof, gang mould pieces at different levels are respectively applied for a kind of cascade mode are set, and, be connected with an asynchronous interface of other divider by its corresponding asynchronous interface according to a certain cascade mode.For example, described control module can be provided with two cascade modules and corresponding asynchronous interface thereof, comprises a levels gang mould piece and corresponding levels connector thereof, and a vertical level gang mould piece and corresponding vertical level connector thereof.
Show that as Fig. 6 described allocation units also are connected with at least one group of LED unit, be used to carry out packet, each group data is transferred to the corresponding LED unit of respectively organizing respectively.
Need to prove, a divider generally includes allocation units, also can comprise a plurality of allocation units, a plurality of allocation units can separately be provided with, can be arranged in parallel, the present invention does not make any additional limits to this yet, as long as can realize data allocations to each group LED unit, comprise LED unit of each bar lamp string, each row or each row, thereby show and get final product.
Arbitrary preset value switch stabilized voltage supply also is connected with at least one group of LED unit, be used for before output current or power, obtain the electric current or the power demand of the desired day part of each load in advance, made before each group LED unit claims, adjust output voltage in advance, export the corresponding burning voltage in one or more groups and each group LED unit, for each group LED unit powers, thereby having avoided respectively organizing the time-delay of LED unit shows, make to show normal, the stable gray scale demonstration of carrying out, ensured brightness and depth, also guaranteed display effect.
And, this group LED cell data of arbitrary preset value switch stabilized voltage supply after with packet is transferred to this preset value switch stabilized voltage supply, according to the data that are transferred to this group LED unit, adjust output condition by this preset value switch stabilized voltage supply synchronously, for carrying out stable power-supplying in each group LED unit.Like this, just can adjust output current synchronously by preset value switch stabilized voltage supply, or adjust output voltage synchronously, or adjust output power synchronously according to LED unit needs gray-scale displayed data; Show thereby normally and stably carry out gray scale, ensured brightness and depth, guaranteed display effect; And avoided preset value switch stabilized voltage supply need adopt more powerful standby power supply, improved the service efficiency of preset value switch stabilized voltage supply.
In the divider, generally include a plurality of preset value switch stabilized voltage supplies, concrete quantity can decide according to the quantity of LED unit.Generally speaking, as shown in Figure 7, a preset value switch stabilized voltage supply with can be connected one group of LED unit.For example, an output maximum current is 20 amperes a preset value switch stabilized voltage supply, and each desired maximum current in LED unit is 100 milliamperes, and promptly 0.1 ampere, then the multipotency of this preset value switch stabilized voltage supply connects 20 amperes/100 milliamperes=200 LED unit; 1 group of LED unit can be formed in these 200 LED unit, also can form the LED unit of two or more groups.
Perhaps, described control module is connected with described allocation units, also is connected with each Switching Power Supply respectively, and described control module arrives described allocation units and each preset value switch stabilized voltage supply with video signal transmission.
Perhaps, described control module is connected with described allocation units, and described control module sends to each preset value switch stabilized voltage supply by described allocation units with described vision signal.
Perhaps, described allocation units also be used for according to each preset value switch stabilized voltage supply correspondence respectively organize the LED unit, the data of respectively organizing after the packet are transferred to corresponding prevalue respectively and close power supply; Each preset value switch stabilized voltage supply also be used for according to its reception respectively organize data, adjust output condition, for each group LED unit powers.
Perhaps, described control module is connected with described allocation units, is not connected with each preset value switch stabilized voltage supply, and described control module sends to each preset value switch stabilized voltage supply by described allocation units with described vision signal.And described allocation units and each preset value switch stabilized voltage supply disperse to be provided with, and are considered as a distributor on the whole.So more help the integral layout in the practical application, spatial relationship is not made any additional limits.
In this example, for arbitrary group of LED unit, the integrated data of described allocation units is chain type transmission, and in other words, described allocation units output to the signal wire of outside a certain group of LED unit, with each LED units in series of this group.Promptly, send to some LED unit of close together earlier, be transferred to next LED unit through this LED unit again according to sequencing.
Perhaps, for arbitrary group of LED unit, the integrated data of described allocation units is the transmission of tree formula, and in other words, described allocation units output to the signal wire of outside a certain group of LED unit, and are in parallel with each LED unit of this group.Each LED cell data that promptly will organize simultaneously sends each LED unit of this group.
Perhaps, each preset value switch stabilized voltage supply is arranged on described allocation units inside; Like this, described control module is connected with described allocation units, also directly is connected with each preset value switch stabilized voltage supply, and described control module sends to described allocation units and wherein each preset value switch stabilized voltage supply respectively with described vision signal.
Described allocation units are connected with at least one group of LED unit by each preset value switch stabilized voltage supply, are used to carry out packet, and each group data is transferred to the corresponding LED unit of respectively organizing by each Switching Power Supply respectively.
Arbitrary preset value switch stabilized voltage supply also is connected with at least one group of LED unit, is used for according to described vision signal, adjusts output condition, for each group LED unit powers; The related data of LED unit is respectively organized in the also corresponding output of each preset value switch stabilized voltage supply.Wherein, described output condition comprise at least output current, output voltage, output power one of them.
For example, each preset value switch stabilized voltage supply is connected with one group of LED unit respectively, described allocation units are connected with one group of LED unit by a preset value switch stabilized voltage supply respectively, and the data after will dividing into groups by preset value switch stabilized voltage supply are transferred to the corresponding LED unit of respectively organizing respectively.In this case, each preset value switch stabilized voltage supply is except adjusting output condition according to each integrated data, and for outside each group LED unit powers, the related data of LED unit is respectively organized in also corresponding output; Related data comprises in grey scale signal, clock signal, ground signalling, latch signal, the enable signal one or multinomial.
Embodiment 8
As shown in Figure 7, on the basis of above-mentioned each example, present embodiment provides the practical situations of a kind of distribution system and divider thereof, by PC or other data source, vision signal is passed through transmit control device, receive controller and be sent at least one divider of the present invention, send vision signal or related data to other dividers by this divider cascade, perhaps, after will dividing into groups by this divider respectively organize data and through the adjusted adjustment output condition of each Switching Power Supply, be transferred to corresponding respectively organizing on the LED unit, thereby form the display effect of display screen or lamp decoration.
Need to prove, other dividers of this divider cascade, can with this divider acting in conjunction in an identical LED display or a lamp decoration; Be the data of respectively organizing the LED unit that each divider is handled one or more LED display or lamp decoration respectively.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a preset value switch stabilized voltage supply is characterized in that, comprises Data Control module and at least one switching power supply, and described switching power supply is used to outside at least one load to power;
Described Data Control module is provided with first signal input interface, be used for by described first signal input interface, receive first signal as outside each load initial conditions, by of the setting of described Data Control module according to each switching power supply, handle, the output secondary signal is to the described switching power supply that is connected with corresponding load;
On described Data Control module, first signal output interface is set also, after described Data Control module receives described first signal,, and, controls each load according to described first signal again by described first signal output interface;
Described switching power supply comprises transformer, current rectifying and wave filtering circuit, pulse-width modulator and at least one power P channel mosfet is set and the MOSFET circuit for regulating and controlling of at least one power N-channel MOS FET;
Described pulse-width modulator is connected with described Data Control module, is used for according to described secondary signal, and output pwm signal is to described MOSFET circuit for regulating and controlling;
Described MOSFET circuit for regulating and controlling one end is connected with the external power source negative pole, and the other end is connected with described transformer one end, and the described transformer other end is connected with external power source is anodal; Be used for by according to described pwm signal, switch the on off state of at least one power switch pipe MOSFET and the switching time between the on off state thereof, to adjust the input voltage of described transformer, transformation outputs to described current rectifying and wave filtering circuit, exports one or more groups burning voltage for each load behind the rectifying and wave-filtering;
Wherein, described initial conditions comprise at least electric current, voltage, power one of them.
2. preset value switch stabilized voltage supply according to claim 1 is characterized in that, at least one MOSFET schottky diode of also connecting is used to adjust switching time of described switch mosfet state.
3. preset value switch stabilized voltage supply according to claim 1 is characterized in that, described MOSFET circuit for regulating and controlling comprises a compensating circuit, is used to adjust and stablize the operating voltage of described MOSFET.
4. preset value switch stabilized voltage supply according to claim 3 is characterized in that described compensating circuit is a temperature-compensation circuit, is used for according to variation of temperature, adjusts and stablize the operating voltage of described MOSFET.
5. preset value switch stabilized voltage supply according to claim 3 is characterized in that, described MOSFET circuit for regulating and controlling also comprises an inductor, and it is connected with described compensating circuit, is used to respond to the variation that pre-sets that obtains generation, starts described compensating circuit.
6. preset value switch stabilized voltage supply according to claim 1, it is characterized in that described Data Control module also is connected with each load, be used for determining the state of each load, according to the state of each load and the initial conditions of requirement thereof, described first signal is adjusted into described secondary signal.
7. a controller is characterized in that, comprises an arbitrary described preset value switch stabilized voltage supply of claim 1 to 6 and a control module;
Described control module is used to receive outer video signal, and arrangement sends to described preset value switch stabilized voltage supply as first signal of outside each load initial conditions.
8. a divider is characterized in that, comprises control module, allocation units and at least one as the arbitrary described preset value switch stabilized voltage supply of claim 1 to 6;
Described control module is used to receive outer video signal, and arrangement sends to described allocation units as first signal of outside each load initial conditions;
Described allocation units are connected with outside at least one group of LED unit, are used to carry out packet, and each group data is transferred to the outside corresponding LED unit of respectively organizing respectively;
At least one preset value switch stabilized voltage supply also is connected with at least one group of LED unit of outside, is used for respectively organizing data according to what receive, adjusts output condition, for each group LED unit powers; Wherein, described output condition comprise at least output current, output voltage, output power one of them.
9. divider according to claim 8, it is characterized in that, described control module also is provided with a configuration interface and at least one cascade module and corresponding asynchronous interface thereof, gang mould pieces at different levels are respectively applied for a kind of cascade mode are set, and, be connected with an asynchronous interface of other divider by its corresponding asynchronous interface according to a certain cascade mode.
10. a distribution system is characterized in that, comprise at least one as the arbitrary described divider of claim 8 to 9, and some groups of LED unit;
Described allocation units also are connected with at least one group of LED unit; Arbitrary preset value switch stabilized voltage supply also is connected with at least one group of LED unit.
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| CN2009100806303A CN101582239B (en) | 2009-03-20 | 2009-03-20 | Preset value switch stabilized voltage supply, controller, distributor and distributing system |
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| CN2009100806303A CN101582239B (en) | 2009-03-20 | 2009-03-20 | Preset value switch stabilized voltage supply, controller, distributor and distributing system |
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