CN203301391U

CN203301391U - Intelligent power supply capable of continuously adjusting transparency of switchable glass or film

Info

Publication number: CN203301391U
Application number: CN2013202303480U
Authority: CN
Inventors: 史济云
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-11-20
Anticipated expiration: 2023-04-28

Abstract

The utility model relates to an intelligent power supply capable of continuously adjusting transparency of switchable glass or film. The intelligent power supply is applicable to voltage control of the switchable glass or film and is also applicable to any other products needing to change an output voltage through remote control, program control and wire control and the like and belongs to the technical field of control circuits. In an inversion process in which DC voltages are converted into AC voltages through adoption of a special inversion circuit, the intelligent power supply makes use of a voltage stabilizing characteristic of a special inversion chip (that is, through detection and comparison a change of an output VFB, the chip automatically compensates for the change of the output voltage so that an stable output voltage is achieved) and regulates an output AC voltage of an inversion power supply arbitrarily through adjustment of the output voltage and resistance of a voltage-dividing resistor of a voltage-dividing circuit of the VFB so that continuous adjustment of the transparency of the switchable glass (film) is realized. The intelligent power supply is applicable to the voltage control of the switchable glass or film and is also applicable to any other products needing to change the output voltage through the remote control, the program control and the wire control and the like. The intelligent power supply is simple in structure, high in applicability, and obvious in economic and social benefits.

Description

But the intelligent power supply of continuous setup dimming glass or film transparency

Technical field

But the utility model relates to the intelligent power supply of a kind of continuous setup dimming glass or film transparency, be applied to the voltage control of dimming glass or film, also be applicable to other any needs and by remote control, program control, line traffic control etc., change the product of output voltage, belong to the control circuit technical field.

Background technology

The world today, the development of new and high technology is maked rapid progress, and these new high-tech products have greatly improved people's quality of life.Along with improving constantly of people's living standard, a kind of dimming glass has been come into daily life.

Dimming glass, as the term suggests be exactly that the transparency (light transmittance) of glass can be regulated by automatically controlled, temperature control, the mode such as light-operated, voltage-controlled.Due to various condition restriction, realize on the market the dimming glass of volume production at present, be nearly all the electronic control type dimming glass.Electronic-control dimming glass has another name called dimming glass, intelligent dimming glass, intelligent glass, liquid crystal light modulation glass, electrically-controlled liquid crystal glass etc., it is to advance in the middle of layer glass liquid crystal film is compound, the new special photoelectric glass product of integrated sandwich after the HTHP gummed.By the break-make of controlling electric current, whether control transparent and opaque (light-permeable, similar ground glass) state of glass.Dimming glass mainly contains following function:

1. privacy protection function: the maximum work of dimming glass is with being privacy protection function, and it can control the transparent opaque state of glass at any time;

2. projecting function: dimming glass or a very outstanding projection are shielded firmly, under the light adapt circumstance, if select high lumen projection machine, and projection imaging effect very clear outstanding (being suitable for the back projection imaging mode);

3. security feature: dimming glass is also doubling glass, possesses all advantages of safety glass, comprises after breaking the security performance that prevents that fragment from splashing, and anti-Beating Strength is high;

4. environmental protection characteristic: the light modulation film in the middle of dimming glass and film can be heat insulation, intercept the infrared ray more than the ultraviolet ray and 98% 99% or more.The masked segment infrared ray reduces thermal radiation and transmission.And shielding ultraviolet rays can protect indoor furnishings not because of situations such as fading, aging appear in ultraviolet irradiation, and the protection personnel are not subjected to ultraviolet direct projection and the disease that causes;

5. sound damping: in the middle of dimming glass light modulation film and film the sound damping action is arranged.Can partly intercept noise.

Because dimming glass has above-mentioned functions and characteristic, the application places of dimming glass is very extensive, covers the numerous areas such as administrative office, public service, business amusement, life staying idle at home, advertisement media, display and demonstration, image, public safety and automobile making.

Electronic-control dimming glass is opaque (light-permeable while except having, when its two ends apply certain voltage, being transparent (transparent, printing opacity) state, outage, similar ground glass) the automatically controlled characteristic of state, also have its transparent (printing opacity) degree and with the change in voltage that puts on glass the two poles of the earth, have the characteristics that change regularly, this comes the transparency of continuous setup dimming glass (film) to become possibility with regard to making by continuously changing the control supply voltage.

Summary of the invention

But the purpose of this utility model is to provide the intelligent power supply of a kind of continuous setup dimming glass or film transparency, solve existing control power supply can only be manually or the switching of the control dimming glass power supply such as remote control make it be in transparent, opaque state, by the utility model not only can remote control, the line traffic control dimming glass controls the switching of power supply, and can realize the transparency of continuous setup dimming glass, be conducive to give full play to the excellent properties of dimming glass or film, greatly expand its application.

The purpose of this utility model is achieved through the following technical solutions, but the intelligent power supply of a kind of continuous setup dimming glass or film transparency, it is characterized in that, described power supply comprises externally fed power supply voltage converting circuit, SPWM DC-AC inverter circuit, output feedback voltage V FB adjusting control circuit, protective circuit; In SPWM DC-AC inverter circuit, 13,16 pin of inverter signal generator chip U1 are for exchanging output feedback voltage V FB control terminal, the parameter that changes output feedback voltage V FB bleeder circuit changes the VFB value, this change in voltage is adjusted U1 amplitude factor multiplier coefficients after U1 internal circuit error amount calculates makes the output AC voltage value produce respective change, reaches by adjusting the VFB value and regulates arbitrarily inverter output AC voltage value; In SPWM DC-AC inverter circuit, 4,5 pin of inverter signal generator chip U1 are serial line interface RXD, TXD terminal.

Described externally fed power supply voltage converting circuit is by switching power circuit, to convert the alternating supply voltage of input to direct voltage (AC/DC), also vehicle-mounted and other direct voltage are converted to the DC voltage value (DC/DC) that needs, also can be without this change-over circuit part, and vehicle-mounted and other direct voltage are directly inputted into to subsequent conditioning circuit.

The circuit that the inverter signal that in described SPWM DC-AC inverter circuit, inverter signal generator chip U1 produces forms through Q2, Q3, Q4, Q5, U2, U3 components and parts amplifies the bridge type inverse power amplification circuit that the conversion rear drive is comprised of V1, V2, V3, V4; Ac output voltage value depending on input voltage and requirement, the alternating voltage of bridge type inverse power amplification circuit output can be after transformer T carries out voltage transformation, by the sub-P2 of ac voltage output, P3, connect and export dimming glass or film to, can also after inductance L 1 filtering, directly by the sub-P2 of ac voltage output, P3, connect and export dimming glass or film to.

Described output feedback voltage V FB adjusting control circuit adopts potentiometer, digital regulation resistance or light-sensitive device to control the change in resistance of divider resistance in bleeder circuit; Use digital coding and decoding circuit to form remote control, line control circuit, the data-signal that utilizes the decoding chip decoding to export changes the resistance value of digital regulation resistance U5 control element.

In described SPWM DC-AC inverter circuit, 6,7,13,14,15,16 pin of inverter signal generator chip U1 connect excess temperature, the current foldback circuit that U4 and peripheral circuit and RT1, R22, the some components and parts of R24 form.

The utility model adopts special-purpose inverter circuit by in the inversion process of converting direct-current voltage into alternating-current voltage, use the stabilized voltage characteristic (be chip by auto-compensation output voltage after the variation that detects, relatively exports feedback voltage V FB variation reach regulated output voltage) of special-purpose inversion chip, resistance by regulation output voltage and feedback voltage V FB bleeder circuit divider resistance, reach the size of any adjusting inverter output AC voltage, to realize the continuous setup of dimming glass or film transparency.The utility model is applied to the voltage control of dimming glass or film, also is applicable to other any needs and by remote control, program control, line traffic control etc., changes the product of output voltage, and the utility model is simple in structure, and applicability is strong, has significant economic benefit and social benefit.

The accompanying drawing explanation

Fig. 1 is the utility model transformer output inverter circuit functional-block diagram;

Fig. 2 is that the utility model is directly exported the inverter circuit functional-block diagram

Fig. 3 is that in the utility model, the SPWM direct current is delivered stream inverse changing driving circuit module principle figure;

Fig. 4 is transformer output bridge type inverse power amplification circuit schematic diagram in the utility model,

Fig. 5 directly exports bridge type inverse power amplification circuit schematic diagram in the utility model.

Embodiment

Further illustrate in conjunction with the accompanying drawings and embodiments the utility model, the utility model is alternating voltage by vehicle-mounted or other DC power supply (electric main is converted to direct voltage AC/DC through switching power circuit) through the inversion of SPWM special circuit, because special-purpose inverter circuit feeds back the VFB function with output voltage, adjust feedback voltage V FB value and just can adjust the size of inverter circuit output AC voltage, so by the element continuous setup feedback voltage V FB such as employing potentiometer, digital regulation resistance, the light-sensitive device size of regulation output alternating voltage continuously just; Adopt now widely used remote-controled digital coding and decoding circuit (as SC2262, SC2272) output signal to control the break-make of VFB regulating element and output voltage, realize remote control, line traffic control and the light-operated alternating voltage that continuously changes inverter circuit output, thereby reached the purpose of remote control, line traffic control and light-operated continuous setup dimming glass transparency (light transmittance).As shown in Figure 1, the utility model circuit block diagram is transformer output inverter circuit functional-block diagram, it is mainly used in input direct voltage lower (lower than the peak-to-peak value of output AC voltage) or requires the occasion of output isolation, it adopts is first alternating voltage by the direct inversion of direct voltage, then by Industrial Frequency Transformer, this alternating voltage is boosted to (or step-down) to driving dimming glass required voltage value; As shown in Figure 2, the utility model circuit block diagram is directly to export the inverter circuit functional-block diagram, it first carries out DC boosting conversion (DC/DC) by the vehicle-mounted direct voltage that waits by Switching Power Supply, make to input to the peak-to-peak value (electric main through switching power circuit be converted to the direct voltage AC/DC that need) of the direct voltage of bridge type inverse power amplifier greater than output AC voltage, the alternating voltage after the conversion of SPWM inverter circuit just can directly drive dimming glass like this.Comparison diagram 1 and Fig. 2, we can see: vehicle-mounted or other DC power supply importation that both have increased Industrial Frequency Transformer, the latter except the former output has increased DC-to-DC conversion (DC/DC), and other circuit part is basic identical.The transformer output scheme has that circuit is simple, reliability is high, can isolate between good output waveform, alternating current-direct current, without advantages such as DC component, but the volume, weight and the power output that also have power supply are exported the shortcoming of Industrial Frequency Transformer restriction, usually are applicable to the application scenario that power output is less.The direct output scheme of inverter circuit is compared with the former has the characteristics such as volume is little, lightweight, power output accommodation is wide, is often used for wanting the application that cube is little, power output is larger.In Fig. 1, Fig. 2, electric main converts DC voltage circuit (AC/DC) to, direct voltage boosts or reduction voltage circuit (DC/DC) is the Switching Power Supply translation circuit that generally uses at present, the circuit such as remote control, line traffic control is also to adopt now widely used digital coding and decoding circuit (as SC2262, SC2272), and their operation principle and circuit theory diagrams do not repeat them here.Fig. 3 is that in the utility model, the SPWM direct current is delivered stream inverse changing driving circuit module principle figure, Fig. 4 is transformer output bridge type inverse power amplification circuit schematic diagram in the utility model, and Fig. 5 directly exports bridge type inverse power amplification circuit schematic diagram in the utility model.As shown in Figure 3, it is a digitlization, the special-purpose generator chip of single-phase SPWN inversion that feeds back multiple functions such as (VFB) with output voltage that the SPWM direct current is delivered integrated circuit U1 in the stream inverse changing driving circuit, the circuit conversion rear drive that the inverter signal that its produces forms through components and parts such as Q2, Q3, Q4, Q5, U2, U3, by the bridge type inverse power amplification circuit that V1, V2, V3, tetra-field effect transistor of V4 etc. form, is converted to alternating voltage by the direct voltage inversion of input.As shown in Figure 4, the alternating voltage of bridge inverter main circuit output boosts or step-down rear drive dimming glass through Industrial Frequency Transformer T.13 pin of output AC voltage conduct output feedback voltage V FB control integration circuit U 1 after the bleeder circuit dividing potential drop that bridge rectifier, R19, R21, R23 and digital regulation resistance etc. form, chip U1 measures the crest voltage of this feedback and carries out error calculating with the internal reference crest voltage, and output voltage values is made to corresponding rapid adjustment.When output AC voltage raises due to factors such as the variation of supply voltage or load variations, also the phase strain is large for feedback voltage V FB after dividing potential drop, this change in voltage is adjusting range factor multiplier coefficients after U1 internal circuit error amount calculates, and realizes reducing the purpose of output voltage.Otherwise when output AC voltage reduced, the feedback voltage V FB after dividing potential drop is corresponding diminishing also, and this change in voltage is adjusting range factor multiplier coefficients after U1 internal circuit error amount calculates, and realizes the purpose of boosted output voltages.Chip U1 has reached the purpose of regulated output voltage to the processing capacity of output feedback voltage V FB.Thereby this patent utilizes this voltage stabilizing function to reach the continuous light tuning that continuous setup output AC voltage value realizes dimming glass just.As Fig. 4,5, resistance R 13(R19, the R21 that regulates the feedback voltage division circuit when us also can) or the control circuit of the composition such as U5 digital regulation resistance make the equivalent resistance at C23 two ends become large, the dividing potential drop VFB of output voltage at the C23 two ends becomes large, this change in voltage is adjusting range factor multiplier coefficients after U1 internal circuit error amount calculates, and makes output AC voltage reduce; If make continuously the equivalent resistance at C23 two ends change from small to big, just should change after the U1 chip is adjusted can so that output AC voltage continuously by high step-down.Otherwise, when the equivalent resistance that makes continuously the C23 two ends from large to small the time, just can be so that output AC voltage be uprised by low continuously after the adjustment of U1 chip.If in circuit, the R23 adjustable resistance replaces with the hand adjustment potentiometer, by adjusting this potentiometer knob, just can realize the manual continuous setup of output AC voltage.In fact, remote control, line traffic control, the light-operated circuit that is comprised of U5 digital regulation resistance etc. in figure is also by the resistance value that continues to change digital regulation resistance VH and VW (VL) two ends, to change VFB to reach the continuous setup output voltage values.The VH of U5 chip, VW, VL correspond respectively to high-end, intermediate regulations end and the low side of adjustable potentiometer, when at the UP end, applying control signal, the adjustable side VW of digital regulation resistance is moved to high-end VH by low side VL, VW, VL two ends resistance strengthen gradually, and VH, VW two ends resistance reduce gradually, and the lasting variation of this resistance value makes output AC voltage continue to increase; Otherwise, if apply control signal at the DOWN end, the adjustable side VW of potentiometer is moved to low side VL by high-end VH, and VH, VW two ends resistance strengthen gradually, and VW, VL two ends resistance reduce gradually, and the lasting variation of this resistance value makes output AC voltage continue to reduce.in remote control, line traffic control, the light-operated circuit unit, adopt present technology maturation, use numeral widely to compile, decoding chip is (as the SC2262 coding chip, the SC2272 decoding chip) form remote control, line control circuit (omits its electrical schematic diagram herein, operation principle, repeat no more), utilize the data-signal D0 that exports after the decoding chip decoding, D1, D2, D3 is the UP end of control figure potentiometer respectively, the DOWN end, the SPWMEN(of inversion chip U1 stops) end and maximum output voltage control Q2 base stage, both realized by pressing opening of remote controller and line control machine, turn-off button and directly control all-transparent and the opaque state of dimming glass, can realize again by pressing the rising of remote controller and line control machine, the decline button is regulated the size that dimming glass (film) is controlled the power supply output AC voltage continuously, finally realized the continuous setup of the transparency (light transmittance) of dimming glass (film).If the variation by signal control figure potentiometer resistance after conversion of light-sensitive device generation, just can realize output voltage along with the variation of external environment luminous intensity respective change, reach the dimming glass light transmittance and change with surround lighting the light-operated effect that Automatic continuous is adjusted.

Fig. 5 circuit is identical with Fig. 4 circuit working principle, owing to there is no output transformer, has increased inductance L 1, to suppress high-frequency harmonic, to optimize output waveform.

The characteristics such as the voltage that SPWM digitlization pure sine wave inverter signal generator chip U1 has, electric current, temperature feedback (6 of the U1 chip, 7,13,14,15,16 pin etc. in Fig. 3); the protective circuits such as the excess temperature that is formed by components and parts such as RT1, R22 in the U4 in Fig. 3 and peripheral circuit and Fig. 4, Fig. 5, R24, overcurrent; at power supply, occur that excess Temperature, output current surpass when set point and input voltage surpass normal value and stop inverter circuit work, power supply and dimming glass (film) are controlled in protection.

In addition, the special-purpose generator chip of the single-phase SPWN inversion of the digitlization that this circuit adopts U1, also has serial line interface (4 of U1,5 pin in Fig. 3), can carry out serial communication by RS232 serial line interface and outside MCU, PC and vehicle driving computer, utilize software program to control the parameters such as the output voltage of inverter circuit, frequency, the voltage of supervisory circuit, electric current, temperature, frequency etc.

Externally fed power supply voltage converting circuit in the utility model adopts existing ripe circuit, and integrated circuit U1 is that 8010, U2, U3 are IR2110, and U4 is LM393, and U5 is DS1804, X9511.

Claims

1. but the intelligent power supply of a continuous setup dimming glass or film transparency, is characterized in that, described power supply comprises externally fed power supply voltage converting circuit, SPWM DC-AC inverter circuit, output feedback voltage V FB adjusting control circuit, protective circuit; In SPWM DC-AC inverter circuit, 13,16 pin of inverter signal generator chip U1 are for exchanging output feedback voltage V FB control terminal, the parameter that changes output feedback voltage V FB bleeder circuit changes the VFB value, this change in voltage is adjusted U1 amplitude factor multiplier coefficients after U1 internal circuit error amount calculates makes the output AC voltage value produce respective change, reaches by adjusting the VFB value and regulates arbitrarily inverter output AC voltage value; In SPWM DC-AC inverter circuit, 4,5 pin of inverter signal generator chip U1 are serial line interface RXD, TXD terminal.

2. but the intelligent power supply of continuous setup dimming glass according to claim 1 or film transparency, it is characterized in that, described externally fed power supply voltage converting circuit is by switching power circuit, to convert the alternating supply voltage of input to direct voltage (AC/DC), also vehicle-mounted and other direct voltage are converted to the DC voltage value (DC/DC) that needs, also can be without this change-over circuit part, and vehicle-mounted and other direct voltage are directly inputted into to subsequent conditioning circuit.

3. but the intelligent power supply of continuous setup dimming glass according to claim 1 or film transparency, it is characterized in that, the circuit that the inverter signal that in described SPWM DC-AC inverter circuit, inverter signal generator chip U1 produces forms through Q2, Q3, Q4, Q5, U2, U3 components and parts amplifies the bridge type inverse power amplification circuit that the conversion rear drive is comprised of V1, V2, V3, V4; Ac output voltage value depending on input voltage and requirement, the alternating voltage of bridge type inverse power amplification circuit output can be after transformer T carries out voltage transformation, by the sub-P2 of ac voltage output, P3, connect and export dimming glass (film) to, can also after inductance L 1 filtering, directly by the sub-P2 of ac voltage output, P3, connect and export dimming glass or film to.

4. but the intelligent power supply of continuous setup dimming glass according to claim 1 or film transparency, it is characterized in that, described output feedback voltage V FB adjusting control circuit adopts potentiometer, digital regulation resistance or light-sensitive device to control the change in resistance of divider resistance in bleeder circuit; Use digital coding and decoding circuit to form remote control, line control circuit, the data-signal that utilizes the decoding chip decoding to export changes the resistance value of digital regulation resistance U5 control element.

5. but the intelligent power supply of continuous setup dimming glass according to claim 1 or film transparency; it is characterized in that, in described SPWM DC-AC inverter circuit, 6,7,13,14,15,16 pin of inverter signal generator chip U1 connect excess temperature, the current foldback circuit that U4 and peripheral circuit and RT1, R22, the some components and parts of R24 form.