CN102779402A - Control method and control device based on cutdown modulation of power signals - Google Patents
- ️Wed Nov 14 2012
CN102779402A - Control method and control device based on cutdown modulation of power signals - Google Patents
Control method and control device based on cutdown modulation of power signals Download PDFInfo
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- CN102779402A CN102779402A CN2012102524106A CN201210252410A CN102779402A CN 102779402 A CN102779402 A CN 102779402A CN 2012102524106 A CN2012102524106 A CN 2012102524106A CN 201210252410 A CN201210252410 A CN 201210252410A CN 102779402 A CN102779402 A CN 102779402A Authority
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Abstract
The invention discloses a control method and a control device based on cutdown modulation of power signals. The control method is characterized by including steps of waveform modulation, carrier transmission and drive demodulation. In the waveform step, a one-way voltage-stabilizing part in a waveform modulation module is stranded in a current loop, the power signals of alternating current transmitted on a power cord are modulated, and a certain section of waveform amplitude of each cycle is cut down to acquire a modulation power signal. In the carrier transmission step, the modulation power signal is transmitted to a terminal along the power cord. In the drive demodulation step, amplitude detection is performed to the modulation power signal by a demodulation module, corresponding modulation information of the amplitude on a cutdown portion is read, and work state of a load in the terminal is set according to the modulation information. According to the scheme, simple parallel connection and series connection can be used to expand a modulation module in a control module, expansibility is high, and cost is low.
Description
Technical field
The present invention is a kind of control method of employs power signal carrier, specifically is a kind of control method of utilizing the modulation of power supply signal reduction formula to realize, and the device that uses this method to realize.
Background technology
In the use of multiple AC electric equipment, need adjusted control, to such an extent as to be issued to the different working state in same power supply supply.More direct mode be exactly set one can be from the control module of external adjustment and operation circuit independently.This type mode can't be avoided the necessary connecting line of operation circuit, thereby increases line cost, particularly control module and the consumer situation far away of being separated by inevitably.The commonly used dimming lamp of household etc. for example, these extra line costs can't be popularized usually.
A kind of in addition usage is to use controllable silicon Qie Boshi circuit, but sort circuit is applicable to resistive load usually, and can import the very big influence of waveform generation to power supply.
For the foregoing reasons; The circuit that operation circuit is integrated in power supply signal is exactly an inexorable trend; Ac supply signal is modulated; Make power supply signal itself except that supplying energy, also have the carrier information that is used to control, more common mode is exactly the power supply signal that exchanges to be carried out phase modulation accomplish carrier processing.This mode applies to controllable silicon more; And have quite ripe circuit and scheme, but have its obvious defects: carrier signal single (phase place) does not possess extendability; Promptly; If original control module only can be controlled a parameter, need expand the parameter number of its control simultaneously, can't realize basically or the more hardware cost of needs increase.And, its complicated circuit of the control module that this type pm mode is used to regulate, cost is high, and the exchange compatibility is also poor between the control module of different manufacturers.
Based on this, this type utilizes power lead as operation circuit, the mode of carrier wave in addition on power supply signal simultaneously, demands developing a kind of scheme urgently, makes it have good extendability on the one hand, to such an extent as to can expand its control parameter with lower cost; Make on the other hand between same control module and the different device end and have favorable compatibility.
Summary of the invention
To the above-mentioned existing power lead that utilizes as operation circuit, characteristics that its extendability of mode is poor, cost is high of carrier wave in addition on power supply signal simultaneously; The present invention proposes a kind of based on power supply signal reduction formula modulated control method and corresponding device, and its technical scheme is following:
A kind of based on power supply signal reduction formula modulated control method, it is characterized in that: may further comprise the steps:
Waveform modulated: with a waveform modulated module power supply signal of the interchange transmitted on No. one power lead is modulated, made a certain section of its each periodic waveform amplitude all to be cut down, obtain a modulated power signals;
Carrier-wave transmission: said modulated power signals is sent to the terminal along said power lead;
Drive demodulation: in said terminal, said modulated power signals is carried out amplitude detect, read its amplitude and receive the pairing modulation intelligence in reduction position, and set the duty of said terminal internal burden according to said modulation intelligence; The power supply of said load is input as said modulated power signals.
As the preferred person of its technical scheme of this control method, can aspect as follows, have improvement:
In preferred embodiment, in the said waveform modulated step, the amplitude of said power supply signal is carried out the amplitude of equivalent and cut down at least one complete semiperiod; Said modulated power signals has continuous zero potential district.In the preferred embodiment on this basis; In the said waveform modulated step; After the amplitude of said power supply signal cut down, has a recovering step, in this recovering step; A certain section is recovered in the semiperiod that said power supply signal has been cut down, makes it amplitude and reverts to the value before cutting down.
In preferred embodiment, have all before in the said waveform modulated step and change step suddenly, the waveform modulated module that said switch step gating is different, the said modulated power signals of the corresponding different carrier information of said waveform modulated module.In the preferred embodiment on this basis, said waveform modulated module has a plurality of, independently of one another, has a common ends and is connected in of said power lead; Arbitrary moment has a said waveform modulated module to insert said power lead at most in the said switch step, is parallelly connected switching way; In the another kind of preferred embodiment, said waveform modulated module has at least two persons of being in series in said switch step; Wherein the said waveform modulated module of series connection is dealt with the effect linear superposition separately and is obtained said modulated power signals in said power supply signal, for the mode of tandem compound inserts.
About device of the present invention, its technical scheme is following:
A kind of based on power supply signal reduction formula modulated control device, comprising:
Control module; A power supply signal end and a modulated power signals end with two-wire; Have waveform modulated module and switching device shifter in this control module; Have unidirectional voltage regulation part in the said waveform modulated module, said switching device shifter is controlled and is communicated with between said power supply signal end and the modulated power signals end or the said unidirectional voltage regulation part of series connection access;
The terminal has demodulation module and load; Said demodulation module is connected between said load and the modulated power signals end, and has the amplitude detection module that can judge said modulated power signals end magnitude; Said amplitude detection module drives said load according to the magnitude of said modulated power signals end and is in the different working state.
Some preferred embodiments of this device have:
In one type of preferred embodiment, in the said waveform modulated module, said unidirectional voltage regulation part drives an electronic switch, and said electronic switch will be stated unidirectional voltage regulation part and carry out short circuit after said unidirectional voltage regulation part conducting; When said unidirectional voltage regulation part ended, said electronic switch kept turn-offing.
In one type of preferred embodiment, in the said waveform modulated module, said unidirectional voltage regulation part drives an electronic switch, and said electronic switch will be stated unidirectional voltage regulation part and carry out short circuit after said unidirectional voltage regulation part conducting; When said unidirectional voltage regulation part ended, said electronic switch kept turn-offing; Other has an adjustable resistance to change the trunon delay time of the said electronic switch of said unidirectional voltage regulation part conducting rear drive.After above-mentioned these two types of embodiment can use unidirectional voltage regulation part conducting, its voltage value was controlled described electronic switch conducting as trigger condition.
In preferred embodiment, said electronic switch can be controllable silicon or MOS switching tube.
In one type of preferred embodiment, said amplitude detection module utilizes the PWM mode to change the electric current that it drives load in different said duties.
In the preferred embodiment, said unidirectional voltage regulation part is a voltage stabilizing diode; Said switching device shifter is the form of switch.
In the preferred embodiment, said load is a lighting, and said duty is colour temperature that continues to change and/or the logical output state of light that continues variation; Said switching device shifter is non-self-lock switch.
The beneficial effect that the present invention brings is:
1. the structure of control module is very simple, can on the basis of original switching device shifter, can obtain through simple transformation, does not need the switch of special form:
2. realize that the waveform modulated module that this waveform is cut down can be a simple elements, such as voltage stabilizing diode, perhaps other unidirectional constant voltage parts.
3. have the modulated power signals itself of cutting down the territory and import as the power supply of load, to such an extent as to only need the electric wire of one road both-end to get final product between control module and the terminal, power lead has obtained multiplexing functions, and its signal intensity is high, good stability.
4. switching device shifter uses non-self-lock switch in the control mould, when the load steady operation, can not need pass through the waveform modulated mould, thereby can guarantee the high-level efficiency of back level load.
5. the waveform modulated module can be expanded with simple parallel connection, series connection in control module, and its expansion is fine, and cost is low.Especially, the series model of waveform modulated module can use common single-pole double-throw switch (SPDT) to realize, need not extra transformation, has good compatibility.
6. unidirectional voltage regulation part and controllable silicon, bridge heap have constituted waveform modulated module efficiently; Also can take simultaneously the mode of linear combination and other waveform modulated module combinations; Realize the combination of parallel connection and/or series connection; Have abundant expansion, also very low to the requirement of switching device shifter, be easy to realize the lower cost solution of multichannel modulation signal.
7. have the adjustable resistance scheme, can have continuous ratio (perhaps similar ratio) regulatory function, this possesses the advantage of low-power consumption, high scalability on the one hand, also has the compatibility on the continuous regulative mode use habit of tradition simultaneously.The number of elements that the waveform modulated module consumes is few, with low cost.
Description of drawings
Embodiment is described further the present invention below in conjunction with accompanying drawing:
Fig. 1 is the present invention " a kind of based on power supply signal reduction formula modulated control method " embodiment one synoptic diagram;
Fig. 2 is its structural representation of method embodiment shown in Figure 1 corresponding " a kind of based on power supply signal reduction formula modulated control device ";
Fig. 3 is a wave period synoptic diagram of its modulated power signals end 12 of synoptic diagram embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of its terminal 20 parts embodiment illustrated in fig. 2;
Fig. 5 is the structural representation of the present invention " a kind of based on power supply signal reduction formula modulated control device " embodiment two its
control module10 parts;
Fig. 6 is the contrast synoptic diagram of
control module10 its modulated power signals end 12 exportable three kinds of waveform one-periods shown in Figure 5;
Fig. 7 is the structural representation of the present invention " a kind of based on power supply signal reduction formula modulated control device " embodiment three its
control module10 parts;
Fig. 8 is the module diagram of the embodiment of the invention three its
terminal20 parts;
Fig. 9 is the structural representation of the present invention " a kind of based on power supply signal reduction formula modulated control device " embodiment four its
control module10 parts;
Figure 10 is
control module10 its modulated power signals end 12 exportable modulated power signals oscillograms shown in Figure 9;
Figure 11 is the structural representation of the present invention " a kind of based on power supply signal reduction formula modulated control device " embodiment five its
control module10 parts;
Figure 12 is
control module10 its modulated power signals end 12 exportable modulated power signals oscillograms embodiment illustrated in fig. 11;
Figure 13 is the structural representation of the present invention " a kind of based on power supply signal reduction formula modulated control device " embodiment six its
control module10 parts;
Figure 14 is
control module10 its modulated power signals end 12 exportable modulated power signals oscillograms embodiment illustrated in fig. 13.
Embodiment
Embodiment one:
In conjunction with Fig. 1 to Fig. 4, the embodiment of the invention one is explained as follows:
A kind of based on power supply signal reduction formula modulated control method, it comprises several key steps:
Waveform modulated step 1: the power supply signal with the interchange of transmitting on 13 pairs No. one power leads of a waveform modulated module is modulated: power lead is the form of both-end; From power supply signal end 11
Access Control modules10, under the gating of
switching device shifter14, can make signal through waveform modulated
module13 handle the back from 12 outputs of modulated power signals end; The signal of output is as shown in Figure 3; On original power supply signal basis, its positive half cycle receives equivalent and cuts down, and has one with respect to original waveform and cuts down
territory50; So whole waveform must have lasting zero potential district G at positive half cycle.
Carrier-wave transmission step 2: in this step, modulated power signals is sent to
terminal20 from modulated
power signals end12 along power lead.This transmission line can be continued to use general power supply wire rod, wiring and installation treatment, does not need extra introducing operation circuit.
Drive demodulation step 3: in
terminal20, modulated power signals is carried out amplitude detect: see Fig. 2 and Fig. 4, the modulated power signals that comes from modulated power signals end 12 at first passes through
demodulation module21, gets into
load22 again in order to drive.
21 comprises
rectifier bridge210; Get into
rectifier bridge210 with elder generation at modulated power signals; Its amplitude can be passed through the sampling and the examination of
amplitude detection module220, through the whether existence that it cuts down
territory50 of reading to zero potential district G and upper half amplitude, according to judging; Set the duty of load 22: when
reduction territory50 existed,
load22 continued to change according to a variable condition; If the
switching device shifter14 in the
control module10 makes power supply signal end 11 straight-through with modulated power signals end 12,
amplitude detection module220 makes
load22 work in steady state (SS).
Present embodiment load22 is the form of tunable optical light fixture, and the variable condition that continues to change can be light flux variations, so switching
device shifter14 can be realized starting or stoping of light fixture dimming function.In Fig. 1, also comprised an
effect determining step4, judge promptly whether the state of
present load22 has reached set objective, if get into
end step5, make
load22 steady operations; Then proceed waveform modulated
step1 if not.
It is thus clear that; In the present embodiment, the structure of
control module10 is very simple, can on the basis of original
switching device shifter14, can obtain through simple transformation; The switch that does not need special form: add the shape that a waveform modulated
module13. waveform from Fig. 3 is cut down
territory50; Realize that the waveform modulated
module13 that this waveform is cut down can be a simple elements, such as voltage stabilizing diode, perhaps other unidirectional constant voltage parts.On the other hand, have the modulated power signals itself of cutting down
territory50 and import as the power supply of
load22, to such an extent as to only need the electric wire of one road both-end to get final product between
control module10 and the terminal 20, power lead has obtained multiplexing functions, and its signal intensity is high, good stability.
And,, then can not need pass through waveform modulated
module13 during
load22 steady operations, thereby can guarantee the high-level efficiency of
back level load22 if switching
device shifter14 uses non-self-lock switch in the control module 10.A very simple single-pole double-throw switch (SPDT) gets final product.
Embodiment two:
Like Fig. 5 and embodiments of the invention shown in Figure 6 two synoptic diagram.
10 parts of present embodiment are seen Fig. 5, in
control module10, have three waveform modulated
modules13, have used the differential concatenation of voltage stabilizing diode WD1, WD2 and WD3 and WD4 respectively.
Switching device shifter14 has used a single pole multiple throw K1, realizes that different waveform modulated
modules13 inserts with the pattern gating of parallel connection switching, to such an extent as to can be series between power supply signal end 11 and the modulated power signals end 12.
Accordingly; Three kinds of different wave that come from modulated power signals end 12 in Fig. 6, have been showed: the reduction territory 50 that its positive half cycle of A waveform has equivalent; The waveform modulated module 13 at corresponding K1 gating WD1 place; B waveform that lower half is cut down is corresponding WD2, and go up C waveform that lower half all cut down corresponding the WD3 and the WD4 of differential concatenation, three waveforms have different separately zero potential district characteristics; It is thus clear that; The control module 10 of present embodiment two is on the basis of embodiment one, to expand to obtain, and its expansion structure is very simple, need not to change original waveform modulated module; Can obtain the modulated power signals of three kinds of modulation conditions; Can use the level load thereafter of these three kinds of signal controlling 3 in different change shapes,, colour temperature logical such as the light of certain dimming lamp and light time three parameters can be set on a control module simple in structure 10 very easily.It is thus clear that, the control module of this form, its expansion is stronger, and the cost of raw material that each waveform modulated module 13 consumes is very low.Voltage stabilizing diode WD1 to WD4 selects the following voltage stabilizing of 10V value person for use, and it is very little to guarantee to cut down territory 50, regulates low in energy consumption.
Embodiment three:
Like Fig. 7 and shown in Figure 8, the loading section of present embodiment three can be identical with enforcement two, and different is in
control module10, to have only two waveform modulated
modules13; Only need two voltage stabilizing diode WD4 and WD5 altogether, especially, waveform modulated
module13 is the form linear combination of series connection; Being different from embodiment illustrated in fig. 5 two is forms of parallel connection; And present embodiment three used
switching device shifters14 comprise two single-pole double-throw switch (SPDT) K2 and K3, through the mixing gating of K2 and K3; Also can realize the state of quantity as much at modulated power signals end 12 outputs three kinds of waveforms shown in Figure 6; Especially; Though than more than 14 switches of embodiment two its switching device shifters, the
switching device shifter14 of present embodiment need not special switch, general single-pole double-throw switch (SPDT) can use; Can also omit a waveform modulated
module13; Applicable to the switching motherboard that has two switches, need not extra transformation, have good compatibility.
Fig. 8 has showed a typical application at terminal 20, and present embodiment terminal 20 is the electricity-saving lamp of a tunable optical flux, according to shown in Figure 6; When put on the K2, during the K3 underlying, modulated power signals end 12 output A waveforms, this moment, the amplitude detection module 220 judged that waveforms have lasting zero potential district; And the upper half amplitude is less than lower half; So control light modulation IC230 makes its entering continue to increase the logical state of light, promptly the lamp current through control tube T1 and T2 adjustment fluorescent tube 240 makes it continue to increase; When the K2 underlying; K3 is last when putting, and modulated power signals end 12 is regarded as the B waveform, so the lower half amplitude is less than upper half; Amplitude detection module 220 is read as and reduces the logical state of a control of light, and the lamp current of controlling fluorescent tube 240 through control tube T1 and T2 makes it continue to reduce.Above state when K2 and K3 are returned to down seated position, promptly keep fluorescent tube 240 light logical stablize constant.And the state that K2 and K3 put on all can obtain the C waveform among Fig. 6; This waveform has lasting voltage belt in addition; But last lower half amplitude is all cut down; Can judge very expediently through amplitude detection module 220, this state can define a state that regularly turn-offs in terminal 20, has expanded the controlled function in terminal 20 largely.
It is thus clear that, if K2 and
K3 are the switch of non-self-locking, then at its reset position, the 13 not power consumptions of waveform modulated module.And use
amplitude detection module220 control light modulation IC230 is to be the pattern of a quasi-representative, no matter be the light source of present embodiment fluorescent tube 240 forms, and still linear better led light source, its Principles of Regulation are similar, and circuit structure is similar.
Embodiment four:
Like Fig. 9 and embodiments of the invention shown in Figure 10 four.In the present embodiment, unidirectional voltage regulation part WD6 combines with a controllable silicon KG1 and bridge heap B1, constitutes a waveform modulated
module13 that efficient is higher.Two interchanges of bridge heap B1 are held and are belonged to power supply signal end 11, and the other end belongs to modulated power signals end 12.
In the present embodiment, unidirectional voltage regulation part WD6 drives the electronic switch that controllable silicon KG1 constitutes, and electronic switch controllable silicon KG1 will state unidirectional voltage regulation part WD6 and carry out short circuit after unidirectional voltage regulation part WD6 conducting; And unidirectional voltage regulation part WD6 by the time, the state that controllable silicon KG1 keep to continue turn-offs.
When switching
device shifter14 starts waveform modulated
module13, can obtain waveform shown in Figure 10 from modulated power signals end 12, can find out from this waveform; Whole waveform all has the
territory50 of reduction at positive and negative half cycle, and, than embodiment one to embodiment three; The area of cutting down
territory50 is obviously little: when the waveform absolute value surpasses the voltage breakdown of WD7; The turn-on condition of KG1 just satisfies, thus waveform is recovered at once, and limited the size of cutting down territory 50.Realize very low modulation loss.Present embodiment is applicable to the occasion that efficient is had relatively high expectations.
Embodiment five:
Like Figure 11 and shown in Figure 12, the embodiment of the invention five relevant indicators.Present embodiment is on embodiment four bases, to improve to obtain: for control module shown in Figure 9 10; The
control module10 of present embodiment Figure 10 is provided with a diode D1 at the interchange end of bridge heap B2; So; On this basis, modulated power signals end 12 can obtain waveform shown in Figure 12 under the influence of waveform modulated module 13: cut down
territory50 and only appear at upper half (positive half cycle), this embodiment has further reduced the modulation power consumption of
control module10.
From embodiment four and five visible; Unidirectional voltage regulation part and controllable silicon, bridge heap have constituted waveform modulated module efficiently; Also can take simultaneously the mode of linear combination and other waveform modulated module combinations, realize the combination of parallel connection and/or series connection, have abundant expansion; Requirement to switching device shifter is also very low, is easy to realize the lower cost solution of multichannel modulation signal.
Embodiment six:
Like Figure 13 and shown in Figure 14, the signal of the embodiment of the invention six.
Different all on it embodiment, present embodiment have tangible characteristics: except the modulation condition that can satisfy as much, more can realize the scheme of unlimited many combinations or ratio modulation.
Shown in figure 13, in the waveform modulated
module13, unidirectional voltage regulation part WD8 is parallelly connected with the negative electrode anode of an
electronic switch17, and parallelly connected with a charging capacitor C with a mutual charging resistor RX who connects; Charging capacitor C links to each other with the cold end of unidirectional voltage regulation part WD8; The control end of
electronic switch17 is connected in the tie point of charging resistor RX and charging capacitor C through a
control assembly18; Positive pole and the negative pole of unidirectional voltage regulation part WD8 and bridge heap B3 are parallelly connected, and two ac input end one ends that bridge is piled B3 belong to power supply signal end 11, and the other end belongs to modulated power signals end 12.
In the present embodiment, unidirectional voltage regulation part WD8 drives
electronic switch17, and after unidirectional voltage regulation part WD7 conducting, capacitor C begins charging and triggers
electronic switches17 conductings until passing through
control assembly18, thereby unidirectional voltage regulation part WD8 is carried out short circuit; When WD8 ended,
electronic switch17 kept turn-offing; Adjustable resistance RX changes the trunon delay time of unidirectional voltage regulation part WD8 conducting rear drive
electronic switch17.
Under this structure; The waveform of modulated power signals end 12 can be shown in figure 14: the upper half of waveform has to be cut down
territory50 and recovers
territory51, because have the
territory50 of reduction during at first through WD8 when upper half voltage, but C charges via RX at this moment; Charge until C; After its current potential makes
control assembly18 trigger
electronic switch17 conductings, cut down
territory50 and be resumed
territory51 replacements, can obtain
different reduction territories50 and recover
territory51 with the C value through setting different RX; With corresponding different state, visible these amount of state are close to unlimited the kind.
Especially, according to the characteristics of this circuit, can make it to become the scheme of proportion expression modulation; Be that total system only is suitable for a waveform modulated
module13, and RX is set at a potentiometer, when
control module13 modulation start; Through turn RX, can change continuously and cut down
territory50 different conditions corresponding, and can be continuous ratio (perhaps similar ratio) variation with recovering
territory51; For example when continuously regulating
RX4, the recovery territory that can realize different shapes such as 51b, 51c.This possesses the advantage of low-power consumption, high scalability on the one hand, also has the compatibility on the continuous regulative mode use habit of tradition simultaneously.Simultaneously, the number of elements of waveform modulated
module13 consumptions is few, with low
cost.Electronic switch17 can be the silicon controlled form, also can be the form of MOS switching tube, crystal switch pipe.And control
assembly18 can be the multiple voltage control device, exports one trigger current/voltage as long as its function satisfies under specific magnitude of voltage to the control end of
electronic switch17.
In the present embodiment,
controllable silicon KG3 can use MCU driven MOS pipe to realize the electronic switch of same principle, makes it to have abundanter, stable function.
In this example, modulation signal can use adjustable resistance separately, and not necessarily needs charging capacitor C, to improve control accuracy.
More than all embodiment, the amplitude at its terminal detects can be with come to use the PWM modulation system to drive load simultaneously to the modulated power signals examination of sampling based on the scheme of MCU.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements according to this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (10)
1. cut down formula modulated control method based on power supply signal for one kind, it is characterized in that: may further comprise the steps:
Waveform modulated: with a waveform modulated module power supply signal of the interchange transmitted on No. one power lead is modulated, made a certain section of its each periodic waveform amplitude all to be cut down, obtain a modulated power signals;
Carrier-wave transmission: said modulated power signals is sent to the terminal along said power lead;
Drive demodulation: in said terminal, said modulated power signals is carried out amplitude detect, read its amplitude and receive the pairing modulation intelligence in reduction position, and set the duty of said terminal internal burden according to said modulation intelligence; The power supply of said load is input as said modulated power signals.
2. said a kind of based on power supply signal reduction formula modulated control method according to claim 1, it is characterized in that:
In the said waveform modulated step, the amplitude of said power supply signal is carried out the amplitude of equivalent and cut down at least one complete semiperiod; Said modulated power signals has continuous zero potential district.
3. said a kind of based on power supply signal reduction formula modulated control method according to claim 2, it is characterized in that:
In the said waveform modulated step, after the amplitude of said power supply signal cut down, have a recovering step, in this recovering step, a certain section is recovered in the semiperiod that said power supply signal has been cut down, makes it amplitude and reverts to the value before cutting down.
4. according to each saidly a kind ofly cuts down formula modulated control method based on power supply signal in the claim 1 to 3, it is characterized in that:
Had all before in the said waveform modulated step and change step suddenly, the waveform modulated module that said switch step gating is different, the said modulated power signals of the corresponding different carrier information of said waveform modulated module.
5. said a kind of based on power supply signal reduction formula modulated control method according to claim 4, it is characterized in that: said waveform modulated module has a plurality of, independently of one another; Said switch step adopts parallel connection to switch or the mode of tandem compound inserts said waveform modulated module; Wherein the said waveform modulated module of tandem compound is dealt with the effect linear superposition separately and is obtained said modulated power signals in said power supply signal.
6. cut down formula modulated control device based on power supply signal for one kind; It is characterized in that: comprising: control module; A power supply signal end and a modulated power signals end with two-wire; Have waveform modulated module and switching device shifter in this control module, have unidirectional voltage regulation part in the said waveform modulated module, said switching device shifter is controlled and is communicated with between said power supply signal end and the modulated power signals end or the said unidirectional voltage regulation part of series connection access;
The terminal has demodulation module and load; Said demodulation module is connected between said load and the modulated power signals end, and has the amplitude detection module that can judge said modulated power signals end magnitude; Said amplitude detection module drives said load according to the magnitude of said modulated power signals end and is in the different working state.
7. said a kind of based on power supply signal reduction formula modulated control device according to claim 6; It is characterized in that: in the said waveform modulated module; Said unidirectional voltage regulation part drives an electronic switch, and said electronic switch will be stated unidirectional voltage regulation part and carry out short circuit after said unidirectional voltage regulation part conducting; When said unidirectional voltage regulation part ended, said electronic switch kept turn-offing.
8. said a kind of based on power supply signal reduction formula modulated control device according to claim 6; It is characterized in that: in the said waveform modulated module; Said unidirectional voltage regulation part drives an electronic switch, and said electronic switch will be stated unidirectional voltage regulation part and carry out short circuit after said unidirectional voltage regulation part conducting; When said unidirectional voltage regulation part ended, said electronic switch kept turn-offing; Other has an adjustable resistance to change the trunon delay time of the said electronic switch of said unidirectional voltage regulation part conducting rear drive.
9. saidly a kind ofly cut down formula modulated control device based on power supply signal according to claim 7 or 8, it is characterized in that: said electronic switch is controllable silicon or MOS switching tube.
10. said a kind of based on power supply signal reduction formula modulated control device according to claim 9, it is characterized in that: said unidirectional voltage regulation part is a voltage stabilizing diode; Said switching device shifter is the form of switch.
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| CN201210252410.6A CN102779402B (en) | 2012-07-19 | 2012-07-19 | Control method and control device based on cutdown modulation of power signals |
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| CN105843045A (en) * | 2015-01-13 | 2016-08-10 | 东林科技股份有限公司 | Electric appliance control system |
| CN108495408A (en) * | 2018-03-28 | 2018-09-04 | Tcl-罗格朗国际电工（惠州）有限公司 | Dim trigger circuit and light modulator |
| CN112466110A (en) * | 2020-10-29 | 2021-03-09 | 欧普照明电器（中山）有限公司 | Equipment control system and equipment control method |
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| CN101938869A (en) * | 2009-06-30 | 2011-01-05 | 辉芒微电子（深圳）有限公司 | Direct current (DC) control device in alternating current (AC) system |
| US20110101882A1 (en) * | 2009-11-04 | 2011-05-05 | Helmut Endres | Method For Transmitting Control Information From A Control Device To A Lamp Unit As Well As A Corresponding Illuminating System, Lamp Unit And Control Device |
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| CN105843045A (en) * | 2015-01-13 | 2016-08-10 | 东林科技股份有限公司 | Electric appliance control system |
| CN108495408A (en) * | 2018-03-28 | 2018-09-04 | Tcl-罗格朗国际电工（惠州）有限公司 | Dim trigger circuit and light modulator |
| CN108495408B (en) * | 2018-03-28 | 2024-09-10 | 罗格朗智能电气(惠州)有限公司 | Dimming trigger circuit and dimmer |
| CN112466110A (en) * | 2020-10-29 | 2021-03-09 | 欧普照明电器（中山）有限公司 | Equipment control system and equipment control method |
| CN112466110B (en) * | 2020-10-29 | 2024-02-23 | 欧普照明电器（中山）有限公司 | Equipment control system and equipment control method |
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|---|---|
| CN102779402B (en) | 2015-04-22 |
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