CN102779402B - 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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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 using power supply signal carrier wave, specifically a kind of control method utilizing power supply signal to cut down formula modulation realization, and transports the device realized in this way.
Background technology
In the use of multiple AC electric equipment, need adjusted control, to such an extent as to be issued to different duties in same power supply supply.More direct mode is exactly setting one control module that can regulate from outside and independently operation circuit.This kind of mode cannot avoid the necessary connecting line of operation circuit, thus inevitably increases line cost, particularly control module and consumer situation relatively far apart.The dimming lamp etc. that such as household is conventional, these extra line costs cannot be popularized usually.
Another usage uses controllable silicon to cut waves circuit, but this circuit is applicable to resistive load usually, and can have a huge impact power supply input waveform.
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 also with the carrier information for controlling except supplying energy, more common mode is exactly carry out phase modulation to the power supply signal exchanged to complete carrier processing.This mode applies to controllable silicon more, and there is quite ripe circuit and scheme, but there is its obvious defect: carrier signal single (phase place), do not possess extendability, namely, if control module originally only can control a parameter, need to expand its parameter number controlled simultaneously, substantially cannot realize or need to increase more hardware cost.And this kind of pm mode is complicated for its circuit of the control module that regulates, and cost is high, it is also poor to exchange compatibility between the control module of different manufacturers.
Based on this, this kind of power lead that utilizes, as operation circuit, the simultaneously mode of in addition carrier wave on power supply signal, urgently develops a kind of scheme, makes it have good extendability on the one hand, to such an extent as to can expand its controling parameter with lower cost; Make, between same control module and different device ends, there is good compatibility on the other hand.
Summary of the invention
For the above-mentioned existing power lead that utilizes as operation circuit, the simultaneously feature that its extendability of mode is poor, cost is high of in addition carrier wave on power supply signal, the present invention proposes a kind of control method based on the modulation of power supply signal reduction formula and corresponding device, and its technical scheme is as follows:
Cut down a control method for formula modulation based on power supply signal, it is characterized in that: comprise the following steps:
Waveform modulated: modulate with the power supply signal of a waveform modulated module to the interchange that a road power lead transmits, makes a certain section of its each periodic waveform amplitude to be cut down, obtains a modulated power signals;
Carrier-wave transmission: described modulated power signals is sent to terminal along described power lead;
Drive demodulation: in described terminal, amplitude detection is carried out to described modulated power signals, read its amplitude and be subject to cutting down the modulation intelligence corresponding to position, and set the duty of described terminal internal burden according to described modulation intelligence; The power supply of described load is input as described modulated power signals.
As the preferred person of its technical scheme of this control method, improvement can be had in following:
In the preferred embodiment, in described waveform modulated step, the amplitude of the amplitude of described power supply signal being carried out within least one complete semiperiod to equivalent is cut down; Described modulated power signals has continuous zero potential district.In preferred embodiment on this basis, in described waveform modulated step, after the amplitude of described power supply signal is cut down, there is a recovering step, in this recovering step, in the semiperiod of cut down described power supply signal, a certain section is recovered, and makes it the value before amplitude reverts to reduction.
In the preferred embodiment, before in described waveform modulated step, there is a switch step, the waveform modulated module that described switch step gating is different, the described modulated power signals of the corresponding different carrier information of described waveform modulated module.In preferred embodiment on this basis, described waveform modulated module has multiple, independently of one another, has one and jointly holds one that is connected to described power lead; In described switch step, any instant has at most a described waveform modulated module to access described power lead, is the mode that parallel connection switches; In another kind of preferred embodiment, described waveform modulated module has at least two persons of being in series in described switch step; The described waveform modulated module of wherein connecting separately treatment effect linear superposition obtains described modulated power signals in described power supply signal, for the mode of tandem compound accesses.
About device of the present invention, its technical scheme is as follows:
Cut down a control device for formula modulation based on power supply signal, comprising:
Control module, there is a power supply signal end and a modulated power signals end of two-wire, there is in this control module waveform modulated module and switching device shifter, have unidirectional voltage regulation part in described waveform modulated module, described switching device shifter controls to be communicated with between described power supply signal end and modulated power signals end or the described unidirectional voltage regulation part of series connection access;
Terminal, has demodulation module and load; Described demodulation module is connected between described load and modulated power signals end, and has the amplitude detection module that can judge that described modulated power signals end amplitude changes; Described amplitude detection module drives described load to be in different duties according to the amplitude change of described modulated power signals end.
Some preferred embodiments of this device have:
In one class preferred embodiment, in described waveform modulated module, described unidirectional voltage regulation part drives an electronic switch, will state unidirectional voltage regulation part carry out short circuit when described electronic switch after described unidirectional voltage regulation part conducting; During described unidirectional voltage regulation part cut-off, described electronic switch keeps turning off.
In one class preferred embodiment, in described waveform modulated module, described unidirectional voltage regulation part drives an electronic switch, will state unidirectional voltage regulation part carry out short circuit when described electronic switch after described unidirectional voltage regulation part conducting; During described unidirectional voltage regulation part cut-off, described electronic switch keeps turning off; An adjustable resistance is separately had to change the trunon delay time of electronic switch described in described unidirectional voltage regulation part conducting rear drive.This two classes embodiment above-mentioned can with after unidirectional voltage regulation part conducting, the electronic switch conducting described in its both end voltage value controls as trigger condition.
In the preferred embodiment, described electronic switch can be controllable silicon or MOS switching tube.
In one class preferred embodiment, described amplitude detection module utilizes PWM mode to change the electric current of its driving load in different described duties.
In preferred embodiment, described unidirectional voltage regulation part is voltage stabilizing diode; Described switching device shifter is the form of switch.
In preferred embodiment, described load is lighting, and described duty is that the colour temperature continuing change and/or the light continuing to change lead to output state; Described switching device shifter is non-self-lock-ing switch.
The beneficial effect that the present invention brings is:
1. the structure of control module is very simple, can obtain, do not need the switch of special form on the basis of original switching device shifter through simple transformation:
2. the waveform modulated module realizing the reduction of this waveform can be simple element, such as a voltage stabilizing diode, or other unidirectional constant voltage parts.
3. input as the power supply of load with the modulated power signals itself cutting down territory, to such an extent as to the electric wire of Jin Xu mono-road both-end between control module and terminal, power lead obtains multiplexing functions, and its signal intensity is high, good stability.
4. control switching device shifter in mould and use non-self-lock-ing switch, can not need through waveform modulated mould when load stabilization works, thus the high-level efficiency of successive load can be ensured.
5. waveform modulated module can be expanded with simple parallel connection, series connection in the control module, and its expansion is fine, and cost is low.Especially, the series model of waveform modulated module can realize with common single-pole double-throw switch (SPDT), without the need to additional transformation, has good compatibility.
6. unidirectional voltage regulation part and controllable silicon, Qiao Dui constitute efficient waveform modulated module, also can take mode and other the waveform modulated block combiner of linear combination simultaneously, realize combination that is in parallel and/or series connection, there is abundant expansion, also very low to the requirement of switching device shifter, be easy to the lower cost solution realizing multichannel modulation signal.
7. with adjustable resistance scheme, can have continuous print ratio (or similar ratio) regulatory function, this possesses the advantage of low-power consumption, high scalability on the one hand, also has the compatibility in the continuous regulative mode use habit of tradition simultaneously.The number of elements that waveform modulated module consumes is few, with low cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Fig. 1 is the present invention's " a kind of control method of cutting down formula modulation based on power supply signal " embodiment one schematic diagram;
Fig. 2 is embodiment of the method shown in Fig. 1 corresponding " a kind of control device cutting down formula modulation based on power supply signal " its structural representation;
Fig. 3 is a wave period schematic diagram of its modulated power signals end 12 of schematic diagram embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of its terminal 20 part embodiment illustrated in fig. 2;
Fig. 5 is the structural representation of the present invention's " a kind of control device cutting down formula modulation based on power supply signal " its control module 10 part of embodiment two;
Fig. 6 is the contrast schematic diagram of the exportable three kinds of waveform one-periods of its modulated power signals end 12 of the control module 10 shown in Fig. 5;
Fig. 7 is the structural representation of the present invention's " a kind of control device cutting down formula modulation based on power supply signal " its control module 10 part of embodiment three;
Fig. 8 is the module diagram of its terminal 20 part of the embodiment of the present invention three;
Fig. 9 is the structural representation of the present invention's " a kind of control device cutting down formula modulation based on power supply signal " its control module 10 part of embodiment four;
Figure 10 is the exportable modulated power signals oscillogram of its modulated power signals end 12 of control module 10 shown in Fig. 9;
Figure 11 is the structural representation of the present invention's " a kind of control device cutting down formula modulation based on power supply signal " its control module 10 part of embodiment five;
Figure 12 is the exportable modulated power signals oscillogram of its modulated power signals end 12 of control module 10 embodiment illustrated in fig. 11;
Figure 13 is the structural representation of the present invention's " a kind of control device cutting down formula modulation based on power supply signal " its control module 10 part of embodiment six;
Figure 14 is the exportable modulated power signals oscillogram of its modulated power signals end 12 of control module 10 embodiment illustrated in fig. 13.
Embodiment
Embodiment one:
Composition graphs 1 to Fig. 4, the embodiment of the present invention one is described as follows:
Cut down a control method for formula modulation based on power supply signal, it comprises several key step:
Waveform modulated step 1: modulate with the power supply signal of a waveform modulated module 13 to the interchange that a road power lead transmits: power lead is the form of both-end, from power supply signal end 11 Access Control module 10, under the gating of switching device shifter 14, can make signal through waveform modulated module 13 process after from modulated power signals end 12 export, the signal exported as shown in Figure 3, on original power supply signal basis, its positive half cycle is subject to equivalent and cuts down, relative to original waveform, there is one and cut down territory 50, so, whole waveform must have lasting zero potential district G at positive half cycle.
Carrier-wave transmission step 2: in this step, is sent to terminal 20 by modulated power signals from modulated power signals end 12 along power lead.This transmission line can continue to use general power wire, wiring and installation process, does not need additionally to introduce operation circuit.
Drive demodulation step 3: in terminal 20, amplitude detection is carried out to modulated power signals: see Fig. 2 and Fig. 4, come from the modulated power signals of modulated power signals end 12 first through demodulation module 21, then enter load 22 in order to drive.
Demodulation module 21 comprises rectifier bridge 210, rectifier bridge 210 is entered with elder generation at modulated power signals, its amplitude can through the sampling of amplitude detection module 220 and examination, by to the reading of zero potential district G and upper half amplitude, it cuts down the whether existence in territory 50, according to judging, the duty of setting load 22: when cutting down territory 50 and existing, load 22 continues change according to a variable condition; If the switching device shifter 14 in control module 10 makes power supply signal end 11 lead directly to modulated power signals end 12, amplitude detection module 220 makes load 22 work in steady state (SS).The present embodiment load 22 is the form of tunable optical light fixture, and the variable condition continuing change can be light flux variations, so switching device shifter 14 can realize starting or stoping of lamp light-regulating function.In FIG, further comprises an effect determining step 4, namely judge whether the state of present load 22 reaches set objective, if enter end step 5, make load 22 steady operation; Then proceed waveform modulated step 1 if not.
Visible, in the present embodiment, the structure of control module 10 is very simple, can be able to obtain through simple transformation on the basis of original switching device shifter 14, do not need the switch of special form: add a waveform modulated module 13. waveform from Fig. 3 and cut down the shape in territory 50, the waveform modulated module 13 realizing the reduction of this waveform can be simple element, such as a voltage stabilizing diode, or other unidirectional constant voltage parts.On the other hand, input as the power supply of load 22 with the modulated power signals itself cutting down territory 50, to such an extent as to the electric wire of Jin Xu mono-road both-end between control module 10 and terminal 20, power lead obtains multiplexing functions, and its signal intensity is high, good stability.
Further, if switching device shifter 14 uses non-self-lock-ing switch in control module 10, then can not need through waveform modulated module 13 during load 22 steady operation, thus the high-level efficiency of successive load 22 can be ensured.A very simple single-pole double-throw switch (SPDT).
Embodiment two:
Embodiments of the invention two schematic diagram as shown in Figure 5 and Figure 6.
Control module 10 part of the present embodiment is shown in Fig. 5, in control module 10, has three waveform modulated modules 13, employs the differential concatenation of voltage stabilizing diode WD1, WD2 and WD3 and WD4 respectively.Switching device shifter 14 employs a single pole multiple throw K1, realizes pattern gating that different waveform modulated modules 13 switches with parallel connection and accesses, to such an extent as to can be series between power supply signal end 11 and modulated power signals end 12.
Accordingly, illustrate the different wave that three kinds come from modulated power signals end 12 in figure 6: its positive half cycle of A waveform has the reduction territory 50 of equivalent, the waveform modulated module 13 at corresponding K1 gating WD1 place, lower half is by the corresponding WD2 of the B waveform cut down, and upper lower half is all by corresponding WD3 and WD4 of differential concatenation of the C waveform cut down, three waveforms have zero potential district features different separately; Visible, the control module 10 of the present embodiment two expands to obtain on the basis of embodiment one, and its prolongation structure is very simple, without the need to changing original waveform modulated module, the modulated power signals of three kinds of modulation conditions can be obtained, different change shape in 3 of its successive load can be controlled with these three kinds of signals, the light of such as certain dimming lamp is logical, colour temperature and lighting time three parameters, a simple control module 10 of structure can set very easily.Visible, the control module of this form, its expansion is comparatively strong, and the cost of raw material that each waveform modulated module 13 consumes is very low.Voltage stabilizing diode WD1 to WD4, selects below 10V voltage stabilizing value person, can ensure to cut down territory 50 very little, regulate low in energy consumption.
Embodiment three:
As shown in Figure 7 and Figure 8, the loading section of the present embodiment three can be identical with enforcement two, unlike only having two waveform modulated modules 13 in control module 10, altogether only need two voltage stabilizing diode WD4 and WD5, especially, waveform modulated module 13 is the form linear combination of series connection, being different from embodiment illustrated in fig. 5 two is forms in parallel, and, the present embodiment three switching device shifter 14 used comprises two single-pole double-throw switch (SPDT) K2 and K3, by the mixing gating of K2 and K3, also can three kinds of waveforms shown in modulated power signals end 12 output map 6, realize the state of quantity as much, especially, although comparatively its switching device shifter of embodiment two more than 14 switches, but the switching device shifter 14 of the present embodiment is without the need to special switch, general single-pole double-throw switch (SPDT) can use, a waveform modulated module 13 can also be omitted, be applicable to the switching motherboard with two switches, without the need to additional transformation, there is good compatibility.
Fig. 8 illustrates a typical apply of terminal 20, the present embodiment terminal 20 is the electricity-saving lamp of an adjusting luminous flux, according to shown in Fig. 6, when K2 puts, K3 underlying time, modulated power signals end 12 exports A waveform, and now amplitude detection module 220 judges that waveform has lasting zero potential district, and upper half amplitude is less than lower half, so control light modulation IC230, make it enter and continue to increase the logical state of light, namely make it continue to increase by the lamp current of control tube T1 and T2 adjustment fluorescent tube 240; When K2 is underlying, when K3 puts, modulated power signals end 12 is considered as B waveform, so 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 being controlled fluorescent tube 240 by control tube T1 and T2 makes it continue to reduce.Above state when K2 and K3 is returned to underlying position, namely keep fluorescent tube 240 light logical stablize constant.And K2 and K3 all on the state of putting can obtain in Fig. 6 C waveform, this waveform has lasting another voltage belt, but upper lower half amplitude is all cut down, can be judged very expediently by amplitude detection module 220, this state can define the state that a timing turns off in terminal 20, has expanded the function that terminal 20 is controlled largely.
Visible, if K2 and K 3 is the switch of non-self-lock-ing, then at its reset position, waveform modulated module 13 not power consumption.And to control light modulation IC230 by amplitude detection module 220 be pattern for a quasi-representative, no matter be the light source of the present embodiment fluorescent tube 240 form, or linear better LED light source, its Principles of Regulation are similar, and circuit structure is similar.
Embodiment four:
Embodiments of the invention four as shown in Figure 9 and Figure 10.In the present embodiment, unidirectional voltage regulation part WD6 piles B1 with a controllable silicon KG1 and bridge and is combined, and forms the waveform modulated module 13 that an efficiency is higher.Two of bridge heap B1 exchange end one end and belong to power supply signal end 11, and the other end belongs to modulated power signals end 12.
In the present embodiment, the electronic switch that unidirectional voltage regulation part WD6 drives controllable silicon KG1 to form, carries out short circuit when electronic switch controllable silicon KG1 after unidirectional voltage regulation part WD6 conducting will state unidirectional voltage regulation part WD6; And during unidirectional voltage regulation part WD6 cut-off, controllable silicon KG1 keeps the state continuing to turn off.
When switching device shifter 14 makes waveform modulated module 13 start, the waveform shown in Figure 10 can be obtained from modulated power signals end 12, as can be seen from this waveform, whole waveform all has at positive and negative half cycle cuts down territory 50, and, compared to embodiment one to embodiment three, cut down the area in territory 50 obviously little: when the voltage breakdown of waveform absolute value more than WD7, the turn-on condition of KG1 just meets, so waveform will be made at once to recover, and limits the size of cutting down territory 50.Realize very low modulation loss.The present embodiment is applicable to the occasion higher to efficiency requirements.
Embodiment five:
As is illustrated by figs. 11 and 12, the embodiment of the present invention five relevant indicators.The present embodiment improves to obtain on embodiment four basis: for the control module 10 shown in Fig. 9, the control module 10 of the present embodiment Figure 10 arranges a diode D1 at the interchange end of bridge heap B2, so, on this basis, modulated power signals end 12 can obtain the waveform shown in Figure 12 under the impact of waveform modulated module 13: cut down territory 50 and only appear at upper half (positive half cycle), this embodiment reduce further the modulation power consumption of control module 10.
From embodiment four and five, unidirectional voltage regulation part and controllable silicon, Qiao Dui constitute efficient waveform modulated module, also can take mode and other the waveform modulated block combiner of linear combination simultaneously, realize combination that is in parallel and/or series connection, there is abundant expansion, also very low to the requirement of switching device shifter, be easy to the lower cost solution realizing multichannel modulation signal.
Embodiment six:
As shown in Figure 13 and Figure 14, the signal of the embodiment of the present invention six.
Different embodiment all thereon, the present embodiment has an obvious feature: except can meeting the modulation condition of as much, more can realize the scheme of unlimited many combinations or ratio modulation.
As shown in figure 13, in waveform modulated module 13, unidirectional voltage regulation part WD8 is in parallel with the cathode anode of an electronic switch 17, and in parallel with a charging capacitor C with the charging resistor RX mutually connected; Charging capacitor C is connected with the cold end of unidirectional voltage regulation part WD8; The control end of electronic switch 17 is connected to the tie point of charging resistor RX and charging capacitor C by a control assembly 18; Unidirectional voltage regulation part WD8 and a bridge pile the positive pole of B3 and negative pole in parallel, and two ac input end one end of bridge heap 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 switch 17, and when after unidirectional voltage regulation part WD7 conducting, electric capacity C starts charging until by the conducting of control assembly 18 triggerable electronic switch 17, thus unidirectional voltage regulation part WD8 is carried out short circuit; During WD8 cut-off, electronic switch 17 keeps turning off; Adjustable resistance RX changes the trunon delay time of unidirectional voltage regulation part WD8 conducting rear drive electronic switch 17.
Under this structure, the waveform of modulated power signals end 12 can as shown in figure 14: the upper half of waveform has to be cut down territory 50 and recovers territory 51, because cut down territory 50 when first upper half voltage have through WD8, but now C charges via RX, until C charging, after its current potential makes the conducting of control assembly 18 triggerable electronic switch 17, reduction territory 50 is resumed territory 51 and replaces, different reduction territories 50 can be obtained by setting different RX and C values and recover territory 51, with the state that correspondence is different, the almost limitless kind of the quantity of these states as seen.
Especially, according to the feature of this circuit, can make it the scheme becoming proportion expression modulation, namely whole system is only suitable for a waveform modulated module 13, and RX is set as a potentiometer, when control module 13 is modulated and is started, by turn RX, can change continuously and cut down territory 50 different conditions corresponding with recovering territory 51, and can be continuous print ratio (or similar ratio) change, such as when regulating continuously RX 4, the recovery territory of the different shapes such as 51b, 51c can be realized.This possesses the advantage of low-power consumption, high scalability on the one hand, also has the compatibility in the continuous regulative mode use habit of tradition simultaneously.Meanwhile, the number of elements of waveform modulated module 13 consumption is few, with low cost.Electronic switch 17 can be silicon controlled form, also can be the form of MOS switching tube, crystal switch pipe.And control assembly 18 can be multiple voltage control device, as long as its function meets export one trigger current/voltage to the control end of electronic switch 17 under specific magnitude of voltage.
In the present embodiment, controllable silicon KG 3 can realize the electronic switch of same principle with MCU driven MOS pipe, make it to have abundanter, stable function.
In this example, modulation signal can be used alone adjustable resistance, and not necessarily needs charging capacitor C, to improve control accuracy.
Embodiments all above, the amplitude detection of its terminal can carry out sampling by the scheme based on MCU to modulated power signals and screen, and uses PWM mode to drive load simultaneously.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process according to this, the equivalence change namely done according to the scope of the claims of the present invention and description with modify, all should still belong in scope that the present invention contains.
Claims (9)
1. cut down a control method for formula modulation based on power supply signal, it is characterized in that: comprise the following steps:
Waveform modulated: modulate with the power supply signal of a waveform modulated module to the interchange that a road power lead transmits, makes a certain section of its each periodic waveform amplitude to be cut down, obtains a modulated power signals;
Carrier-wave transmission: described modulated power signals is sent to terminal along described power lead;
Drive demodulation: in described terminal, amplitude detection is carried out to described modulated power signals, read its amplitude and be subject to cutting down the modulation intelligence corresponding to position, and set the duty of described terminal internal burden according to described modulation intelligence; The power supply of described load is input as described modulated power signals;
It is characterized in that: have unidirectional voltage regulation part in described waveform modulated module, described unidirectional voltage regulation part is communicated with or series connection access controls between power supply signal end and modulated power signals end at switching device shifter; In described waveform modulated step, described unidirectional voltage regulation part is cut down the amplitude that the amplitude of described power supply signal carries out equivalent within least one complete semiperiod, thus obtains the modulated power signals with continuous zero potential district.
2. according to claim 1 a kind of based on power supply signal cut down formula modulation control method, it is characterized in that:
In described waveform modulated step, after cutting down, have a recovering step to the amplitude of described power supply signal, in this recovering step, in the semiperiod of cut down described power supply signal, a certain section is recovered, and makes it the value before amplitude reverts to reduction.
3. a kind of control method of cutting down formula modulation based on power supply signal according to any one of claim 1 to 2, is characterized in that:
There is a switch step, the waveform modulated module that described switch step gating is different before in described waveform modulated step, the described modulated power signals of the corresponding different carrier information of described waveform modulated module.
4. according to claim 3 a kind of based on power supply signal cut down formula modulation control method, it is characterized in that: described waveform modulated module has multiple, independently of one another; Described switch step adopts the mode of switching in parallel or tandem compound that described waveform modulated module is accessed; Wherein the described waveform modulated module of tandem compound separately treatment effect linear superposition obtain described modulated power signals in described power supply signal.
5. cut down a control device for formula modulation based on power supply signal, it is characterized in that: comprising:
Control module, there is a power supply signal end and a modulated power signals end of two-wire, there is in this control module waveform modulated module and switching device shifter, have unidirectional voltage regulation part in described waveform modulated module, described switching device shifter controls to be communicated with between described power supply signal end and modulated power signals end or the described unidirectional voltage regulation part of series connection access;
Terminal, has demodulation module and load; Described demodulation module is connected between described load and modulated power signals end, and has the amplitude detection module that can judge that described modulated power signals end amplitude changes; Described amplitude detection module drives described load to be in different duties according to the amplitude change of described modulated power signals end.
6. according to claim 5 a kind of based on power supply signal cut down formula modulation control device, it is characterized in that: in described waveform modulated module, described unidirectional voltage regulation part drives an electronic switch, will state unidirectional voltage regulation part carry out short circuit when described electronic switch after described unidirectional voltage regulation part conducting; During described unidirectional voltage regulation part cut-off, described electronic switch keeps turning off.
7. according to claim 5 a kind of based on power supply signal cut down formula modulation control device, it is characterized in that: in described waveform modulated module, described unidirectional voltage regulation part drives an electronic switch, will state unidirectional voltage regulation part carry out short circuit when described electronic switch after described unidirectional voltage regulation part conducting; During described unidirectional voltage regulation part cut-off, described electronic switch keeps turning off; An adjustable resistance is separately had to change the trunon delay time of electronic switch described in described unidirectional voltage regulation part conducting rear drive.
8. a kind of control device cutting down formula modulation based on power supply signal according to claim 6 or 7, is characterized in that: described electronic switch is controllable silicon or MOS switching tube.
9. according to claim 8 a kind of based on power supply signal cut down formula modulation control device, it is characterized in that: described unidirectional voltage regulation part is voltage stabilizing diode; Described switching device shifter is the form of switch.
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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 |
| 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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|---|---|---|---|---|
| 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 |
| CN102468769A (en) * | 2010-11-19 | 2012-05-23 | 辉芒微电子（深圳）有限公司 | Alternating-current network communication system |
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| Publication number | Publication date |
|---|---|
| CN102779402A (en) | 2012-11-14 |
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