CN102695333B - Pole-changing driving method and pole-changing dimming apparatus utilizing pole-changing driving method - Google Patents
Pole-changing driving method and pole-changing dimming apparatus utilizing pole-changing driving method Download PDFInfo
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Abstract
The invention discloses a pole-changing driving method and a pole-changing dimming apparatus utilizing the pole-changing driving method, wherein: according to the pole-changing driving method, an input power signal which is in the form of single phase alternating current is processed to obtain three output power signals which have a same average power but different polarity characteristics, and outputs the three output power signals to a terminal; the terminal has a polarity determining function and based on at least two of the three output power signals, makes correspondingly responses different from each other; at the same time, an output terminal is reused as a power supply terminal of the terminal. A power path and a control path of the terminal is completely reused by utilizing the pole-changing driving method so that extra signal lines are omitted completely for output terminal lines and a control terminal and the terminal can use an original power line. The method and the apparatus of the invention have comprehensive advantages in that the loading capacity of the apparatus is great and only limited by the upper power bound of a transmission pass, the signal strength is good, the anti-interference ability is strong, the communication distance is long, and dimming and color temperature adjustment schemes are provided.
Description
Technical field
The present invention relates to a kind of method that adopts reversal mode to drive load, and use the method to realize the pole-changing light modulating device of LED light modulation.
Background technology
The adjusting of lighting concentrates in the logical output of its light and colour temperature, and according to needs such as different occasion different times, adjusting illuminating lamp tool photochromic, makes it meet lighting requirement.LED light source controllability high feature, there is sizable application potential in the field of light modulation, when LED light source obtains after tremendous development, to using the light fixture of LED light source to carry out photochromic adjusting, there is diversified mode, such as:
The first is controllable silicon light modulation mode, by the dimmer of coupling, the LED light fixture that contains adjustable driver is operated.This is the relatively method of main flow of LED lamp light-regulating, and this mode is relatively ripe, obtained extensive utilization, but it has some defects, such as efficiency is low, it is large to disturb, problem that harmonic wave is large, noise is larger, also has especially the hidden danger that makes light source scintillation.
The second is infrared remote control mode, controls driver by infrared receiving set being set on LED light fixture, and uses extra remote controller to carry out remote control; This mode generally can only be controlled one to one, and, shorter from known its command range of ultrared feature, there is receiving angle restriction, and be easily interfered.
The third is RF remote-controlled mode, realizes wireless light modulation operation by remote control and the receiving system of similar infrared mode.This mode cost is higher, and stability is bad, is easily interfered.
The 4th kind is the mode with wire communication, lays extra holding wire and connects each terminal light fixture, such as adopting the photochromic regulation scheme of DALI system; This mode control is more accurate, but needs extra holding wire, has increased installation cost, and it is communicated by letter and control system need to additionally relate to, more complicated.
To sum up, for the demand of the photochromic stable regulation of lighting, always need to avoid the above-mentioned hidden danger of enumerating, but that existing these methods are difficult to is thorough.So, as where designed photochromic regulating system and method, make it to have succinct, reliable, anti-interference, efficient overall merit, be the inevitable demand of LED illuminant color regulating system design.
Summary of the invention
For the inevitable demand of above-mentioned LED illuminant color adjusted design, the present invention proposes a kind of pole-changing light-dimming method and uses the pole-changing light modulating device of this pole-changing light-dimming method, and its technical scheme is as follows:
Pole-changing driving method, its scheme is:
An input power signal to single phase alternating current (A.C.) form is processed, obtain three kinds of average powers identical, the power output signal with opposed polarity feature exported, respectively:
The first utmost point signal, for carrying out described input power signal the full-wave rectification person that obtains direct current;
The second utmost point signal, for the antipodal direct current person of described the first utmost point signal polarity; And
AC signal, the described input power signal not dealing with is directly exported;
Wherein, three kinds of above-mentioned power output signals are switched extraction one wherein, from the output output sharing; Described output is connected in terminal, has the form of both-end; Described terminal has polarity arbitration functions, carrys out the corresponding response of making differing from one another according at least two kinds in above-mentioned three kinds of described power output signals; Described output is multiplexed with the power end of described terminal simultaneously.
As a kind of pole-changing light modulating device that adopts above-mentioned pole-changing driving method, its technical scheme is as follows:
A kind of pole-changing light modulating device, it comprises a polarization switch and at least one terminal, wherein
Described polarization switch comprises:
One input, is connected in an input power signal of single phase alternating current (A.C.) form;
One rectifier bridge, is connected in described input, has the DC terminal of described input power signal full-wave rectification output; And
Switches set is communicated with described input, rectifier bridge simultaneously, has an output; This switches set switchably makes described output export a power output signal, this power output signal comprises at least two kinds in following three kinds of signals by its polar character, respectively: an AC signal identical with described input power signal, from one first utmost point signal of described DC terminal and second utmost point signal contrary with described the first utmost point signal polarity;
Described terminal comprises:
One pole-changing detection module, this pole-changing detection module connects described output, according to the polarization state of described power output signal, obtains different driving signals, then exports a driving control end to;
LED load, connects described driving control end, according to its inner LED module of state-driven of described driving signal, makes it comprise that in corresponding difference light leads to and/or the output state of colour temperature.
As above preferred embodiments more of the present invention, can aspect following, be embodied:
In one preferred embodiment of described pole-changing light modulating device, described switches set comprises the first switch of dpdt double-pole double-throw (DPDT), and two common ports of this first switch are as described output; Wherein two in-phase ends are connected in described input, and another two in-phase ends are connected in described DC terminal.
In one preferred embodiment of described pole-changing light modulating device, described switches set also comprises the first switch and the second switch of dpdt double-pole double-throw (DPDT); Two common ports of described the first switch are as described output;
Two common ports of described second switch connect described DC terminal; And the in-phase end of this second switch is connected with the end of oppisite phase of its inner another sub-switch separately, form a commutation end of both-end; Two in-phase ends of described the first switch are connected in described input, and another two in-phase ends are connected in described commutation end.
In one preferred embodiment of described pole-changing light modulating device, the voltage segment of described power output signal is carried out detection by described pole-changing detection module, to judge its polarity.
In one preferred embodiment of described pole-changing light modulating device, described pole-changing detection module comprises an optocoupler, and its input forward accesses the loop of described power output signal.
Its driving signal that drives control end to export of described pole-changing detection module is the gating signal that low and high level indicates; Described output state is that the stable light corresponding with described driving signal leads to and/or colour temperature.
In one preferred embodiment of described pole-changing light modulating device, its driving signal that drives control end to export of described pole-changing detection module is that duty ratio continues the pwm signal or the level continually varying am signals that change; Described LED load adopts PWM modulation system or amplitude modulation(PAM) mode to drive described LED module accordingly, and described output state comprises that the stable light corresponding with described driving signal leads to and/or colour temperature, and the light constantly changing is logical and/or colour temperature.This scheme can have the preferred version of both direction:
One, described driving signal is pwm signal or the described am signals that duty ratio back and forth changes; Described output state is when in light, logical and/or colour temperature constantly changes, and its version be corresponding back and forth variation.
Its two, the variation pattern of described colour temperature is: adopt the LED load of at least two group different-colours; In described output state, having a state at least is that its luminous flux separately of these two groups of LED loads has different variation tendencies, produces that the light mixing is logical has a corresponding different colour temperature.
The beneficial effect that the technical program is brought is:
1. pole-changing driving method makes the power path of terminal and controls path to obtain complete multiplexingly, and also, signal itself is identical on the one hand with control signal for power signal, and its current circuit is also identical on the other hand; So, make output port lines omit extra holding wire completely, control end and terminal are used original power line; Its load capacity is strong, is only limited to the power upper limit of delivering path, and signal strength signal intensity is good, and antijamming capability is good, and communication distance is far away, has the comprehensive advantage of light modulation, color-temperature regulating scheme.
2. in pole-changing light modulating device, this pole-changing driving method is because its average power of power output signal is identical, therefore can compatible traditional lighting light fixture, or even the dimming lamp of other types, there is good applicability.
3. optocoupler coordinates the pole-changing detection mode of diode detection, makes the stable performance of pole-changing detection module, antijamming capability strong, and extensibility is better simultaneously, is applicable to multiple loads.
4. use the pole-changing driving method of knowing clearly, the scheme advantage of this button light modulation is fully played, effect is very outstanding: make the scheme of whole circulation light modulation have simple and reliable dimming mechanism, cost is lower, and noise is little;
5. " pole-changing light modulating device " can be realized with the electrodeless variation that circulates of light output, colour temperature that two switches can be realized terminal, and cost is low, stable performance, and load autgmentability is fine, and operation is very simple, quick.
Accompanying drawing explanation
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Fig. 1 is the flow chart of the present invention's " pole-changing driving method " embodiment mono-; This flow chart has shown that complete pole-changing drives circulation;
Fig. 2 is a modular structure figure of one corresponding " pole-changing light modulating device " embodiment illustrated in fig. 1; And show the waveform of some key ports;
Fig. 3 is that in the present invention's " pole-changing light modulating device " scheme, a kind of polarization switch module 10 realizes circuit diagram;
Fig. 4 is that in the present invention's " pole-changing light modulating device " scheme, another kind of polarization switch module 10 realizes circuit diagram;
Fig. 5 is in the present invention's " pole-changing light modulating device " scheme, a kind of pole-changing detection module 21 realize circuit diagram;
Fig. 6 is in the present invention's " pole-changing light modulating device " scheme, another kind of pole-changing detection module 21 realize circuit diagram;
Fig. 7 is in the present invention's " pole-changing light modulating device " scheme, a kind of module map of LED load 22;
Fig. 8 is the first kind structural representation of the present invention's " pole-changing light modulating device " scheme;
Fig. 9 is the Equations of The Second Kind structural representation of the present invention's " pole-changing light modulating device " scheme.
Embodiment
Embodiment mono-:
As Fig. 1, the flow chart of the present invention's " pole-changing driving method " embodiment mono-; This flow chart has shown that complete pole-changing drives circulation; And Fig. 2 is a modular structure figure of one corresponding " pole-changing light modulating device " embodiment illustrated in fig. 1; And show the waveform of some key ports; Be explained in conjunction with this two figure:
Pole-changing driving method and corresponding device, the step of its processing is:
Signal generation step 1: this step is processed an input power signal D of single phase alternating current (A.C.) form, such as single-phase sine wave alternating current, switch through switches set, obtain respectively three kinds of power output signals, the average power of these three kinds of power output signals is identical, and the opposed polarity feature having, respectively:
The first utmost point signal A, obtains for described input power signal D is carried out to full-wave rectification;
The second utmost point signal B, completely contrary with the first utmost point signal A polarity, be also direct current; With
AC signal C, to input power signal, D does not deal with, directly output;
Wherein, above-mentioned three kinds of power output signals share the output 12 of a both-end form with control terminal 20, and output 12 multiplexing functions, become the power line of terminal.
Signal is selected step 2: as required, through the switching of switches set 14, export a kind of power output signal;
Signal switch process 3: the power output signal of having selected, enter terminal 20 from output 12, first through a pole-changing detection module 21, the polar character of the power output signal of this pole-changing detection module 21 to output 12 is screened because above-mentioned three kinds of signals feature is obvious each other, be easy to difference come, so, for each power output signal, can export a drive control signal from pole-changing detection module 21 clearly, from driving control end 23 to export;
Signal receiving step 4: in this step, LED load blocks 22 is to above-mentioned driving signal response, thereby works in clearly a specific output state; This output state can be the permanent parameter work that electric parameter is constant, such as LED load blocks 22 works in the state that certain light stable leads to stable color temperature; Also can make the change parameter working forms changing according to certain parameter, such as LED load blocks 22 works in the gradually decreased process of a luminous flux;
Output determining step 5: this step judges needed output state in various manners, such as the light of LED load blocks 22 leads to, whether colour temperature reaches demand, if finish judgement, selects step 2 to readjust if not need to continue to get back to signal; This step conventionally there will be in LED load blocks 22 and works in the change parameter mode of operation changing by certain parameter, is screened and usually need the subjectivity of human eye etc. to experience;
Steady operation step 6: this step is not done any adjustment, makes circuit according to the output state output of stablizing parameter.
To sum up, can find out from embodiments of the invention one, this pole-changing driving method has following feature:
The power path of terminal 20 and control path and obtain complete multiplexingly, also, signal itself is identical on the one hand with control signal for power signal, and its current circuit is also identical on the other hand; So, make output 12 port lines omit extra holding wire completely, control end and terminal are used original power line; Its load capacity is strong, is only limited to the power upper limit of delivering path, and signal strength signal intensity is good, and antijamming capability is good, and communication distance is far away; Especially, in pole-changing light modulating device, this pole-changing driving method, therefore can compatible traditional lighting light fixture because its average power of power output signal is identical, or even the dimming lamp of other types, has good applicability.
Embodiment bis-:
Embodiments of the invention two, are the pole-changing light modulating devices of an adjusting light output capable of circulation, are called for short the scheme of " circulation light modulation ", and the modular structure figure of this device as shown in Figure 8;
Be somebody's turn to do the scheme of " circulation light modulation ", comprise a polarization switch module 10 and a terminal 20, what wherein polarization switch module 10 adopted is the polarization switch scheme shown in Fig. 3, it comprises an input 11, one rectifier bridge 13 and a switches set 14, wherein, rectifier bridge 13 is connected in input 11, input power signal enters full-wave rectification from input 11, from a DC terminal output; Switches set 14 comprises the first K switch 1 of dpdt double-pole double-throw (DPDT), and two common port aa ' of this first K switch 1 are as output 12; Wherein two in-phase end bb ' are connected in input 11, and another two in-phase end cc ' are connected in DC terminal.
The scheme of the present embodiment two " circulation light modulation ", terminal 20 has pole-changing detection module 21 and LED load 22, the present embodiment has adopted the pole-changing detection module 21 shown in Fig. 5, this pole-changing detection module access output 12, adopt the form of the voltage segment of power output signal being carried out to detection, to judge its polarity: adopt an optocoupler U1, its input rectifier diode D2 that connected, the loop of forward access power output signal; This pole-changing detection module 21 from output 12 receive shown in Fig. 2 the first utmost point signal A time, by U2 to drive control end 23 export a corresponding driving signal; This drives signal is the PWM modulation signal that a duty ratio gradually changes;
As shown in Figure 7, driver 25 is the DC-DC driver of PWM modulation system to LED load 22 forms of the present embodiment, drives a complete LED module 26 by modulated terminal 24.As the control mode of driver 25, can use the adjustable form of PWM duty ratio, can be also the mode of direct current amplitude modulation(PAM), realize and controlling with am signals.In this example, just adopt more common PWM mode.
To sum up, the pole-changing light modulating device of the present embodiment " circulation light modulation ", its operation principle is as follows:
Input 11 accesses civil power, under the switching of the first K switch 1, output 12 can obtain two kinds of different power output signals, and in the time that the first K switch 1 is communicated with in-phase end cc ', output 12 is the AC signal C in Fig. 2, this signal thereby optocoupler U1 is coupled, to MCU module U3 output, thus MCU module U3 clearly judge, to driving control end 23 first to export the pwm signal that a duty ratio diminishes gradually, to such an extent as to after driver 25 receptions, the luminous flux of controlling LED module 26 reduces gradually, it is that luminous flux when LED module 26 is little to peaked 10% time that MCU module U3 has a function, the upper PMW signal dutyfactor that drives control end 23 in this basis becomes increase gradually, reach maximum and repeat again said process---so visible, when the first K switch 1 keeps being communicated with in-phase end cc ', the LED module 26 in LED load 22 can circulation change luminous flux (back and forth), until User Satisfaction, the first K switch 1 is switched to in-phase end bb ', to such an extent as to optocoupler U1 is coupled to the first utmost point signal A in Fig. 2, thereby MCU module U3 it drive the pwm signal duty ratio of control end 23 no longer to change, can make LED module 26 keep the luminous flux steady operation having obtained.Visible, the first K switch 1 can, with the button of a non-self-locking, be used the pole-changing driving method of knowing clearly, the scheme advantage of this button light modulation is fully played, effect is very outstanding: make the scheme of whole circulation light modulation have simple and reliable dimming mechanism, cost is lower, and noise is little.Optocoupler coordinates the detecting way of diode D2, makes the stable performance of pole-changing detection module, antijamming capability strong, distance, and extensibility is better simultaneously, is applicable to multiple loads.
Embodiment tri-:
Embodiments of the invention three, are pole-changing light modulating devices that can switch fast colour temperature, are called for short the scheme of " switching colour temperature ", and the modular structure figure of this device as shown in Figure 9; Compared with embodiment mono-, architectural difference is mainly that LED load 22 has adopted two, remains the form shown in Fig. 7; The colour temperature of these two LED loads 22 is different, and one has the LED module 26 of high color temperature such as 6400K, and another is lower colour temperature 3500K person.
And polarization switch module 10 adopts single switch form of Fig. 3, pole-changing detection module 21 still adopts the monochromatic light coupling person shown in Fig. 5, and the operation principle of this embodiment tri-" switching colour temperature " scheme is as follows:
In the present embodiment three, in polarization switch module 10, according to the state of K1, can make output 12 there is AC signal C in Fig. 2 and the power output signal of two kinds of forms of the first utmost point signal A; These two kinds of power output signals are in pole-changing detection module 21, and monochromatic light coupling U1 can obtain different coupling results, make MCU module U3 by driving control end 23 to drive two independently LED loads 22.
This independently two LED loads 22 connect separately one and drive control end 23.MCU module U 3 obtains two to power output signal response and independently drives signal, this drives signal for driving control end 23 two ends to export separately high level, so, the two ends of this driving control end 23 are just as a gating port, make two independently LED load 22 gating work, obtain different colour temperature output thereby switch.This function realizes with first K switch 2 equally, for example, can use self-locking button.It controls simple, stable.
Embodiment tetra-:
Embodiments of the invention four, are the pole-changing light modulating devices of a bidirectional modulation light output, are called for short the scheme of " two-way light modulation ", and the modular structure figure of this device as shown in Figure 8;
In the present embodiment four " two-way light modulation " scheme, polarization switch module 10 as shown in Figure 4, the polarization switch module 10 of this scheme, its switches set 14 has two double-point double-throw switchs, be respectively the first K switch 1 and second switch K2, two common port aa ' of the first K switch 1 are as output 12; Two common port aa ' connection rectifier bridges 13 of second switch K2 are exported the DC terminal of direct current; And the in-phase end bb ' of this second switch K2 is connected with the end of oppisite phase of its inner another sub-switch separately with cc ', forms a commutation end of both-end; Two in-phase end bb ' of the first switch are connected in input 11, and another two in-phase end cc ' are connected in commutation end.So polarization switch module 10 of structure, under the switching of K1 and K2, its output 12 can have A in Fig. 2, B and the whole three kinds of signals of C.
The pole-changing detection module 21 of the present embodiment four still adopts the monochromatic light coupling form shown in Fig. 5, and is also connected in a LED load 22 as shown in Figure 7, therefore pole-changing detection module 21 its driving control ends 23 are only used one end; Its operation principle of the present embodiment four " two-way light modulation " is as follows:
Under default situations as shown in Figure 4, what output 12 was exported is the power output signal as shown in the first utmost point signal A in Fig. 2, its optocoupler U1 this signal that is coupled in pole-changing detection module 21, make MCU module U3 to driving the constant PWM modulation signal of control end 23 output duty cycles, make in LED load 22 its LED module 26 light stable output services;
On the basis shown in Fig. 4, K1 is switched, output 12 has been exported the AC signal C in Fig. 2, so, by optocoupler U1 this signal that is coupled, make MCU module U3 to driving the increasing pwm signal of the control end more current duty ratio of output, make LED module 26 be operated in its luminous flux and export increasing output state.
If on Fig. 4 basis, be that K2 switches, output 12 has been exported the second utmost point signal B in Fig. 2, and now, the more and more less pwm signal of the MCU module U3 more current duty ratio of output, makes LED module 26 be operated in the more and more less output state of luminous flux output.
To sum up, two K switch 1 of polarization switch module 10 and K2 become two switches controlling the 26 light outputs of LED module, its variation tendency is contrary separately, and this makes in the time that the luminous flux of LED module 26 needs more accurate adjusting, and it is convenient, quick that two-way operation seems.K1 and K2 can realize with the button of non-self-locking, show and operate all very directly perceived.
Embodiment five:
Embodiments of the invention five, are the pole-changing light modulating devices of a bidirectional modulation colour temperature, are called for short the scheme of " two-way toning ", and the modular structure figure of this device as shown in Figure 9;
The present embodiment five " two-way toning " scheme, its LED load 22 has two, it is respectively the module with two extreme colour temperatures, one is 6400K, one is 2700K, visible, by the colour mixture of two LED loads 22, the electrodeless variation between 2700K to 6400K again of the colour temperature of whole light source, has very high applicability.So LED load 22 is two complete module shown in Fig. 7 in this programme; What its driving control end 23 transmitted is PWM modulation signal.
In this programme, what its polarization switch module 10 adopted is the form of two switches shown in Fig. 4, therefore a upper embodiment does not repeat this existing introduction.
What the pole-changing detection module 21 in this programme adopted is the scheme shown in Fig. 6, the feature of this scheme, compare notable difference than aforesaid scheme as shown in Figure 5: optocoupler has two of U1 and U2, in the reverse loop of accessing output 12, its purposes is output 12 power output signals to be screened simultaneously separately;
In the time being the first utmost point signal A shown in Fig. 2 from the signal of polarization switch module 10 outputs 12, the coupling result of optocoupler U1 and U2 makes the PWM modulation signal of the driving control end 23 equal stable outputs in two ends of MCU module U3, makes the equal steady operation of LED load 22 of final two colour temperatures;
In the time that the signal from output 12 is the second utmost point signal B shown in Fig. 2, MCU module U3 is to driving one of them of control end 23, connect higher color temperature LED load output duty cycle and become gradually large modulation signal, and drive another of control end 23, so connect the modulation signal that lower colour temperature LED load output duty cycle diminishes gradually---, this output state is the variable condition that whole terminal 20 colour temperatures uprise gradually.
Similarly, in the time that the signal from output 12 is the AC signal C shown in Fig. 2, the colour temperature of terminal 20 can be more and more lower.
Especially, anyway two LED loads 22 change, and can in MCU module, set its gross power constant, so under the simple combination of K1 and two buttons of K2, terminal 20 can realize the electrodeless variation of colour temperature gamut, and gross power is constant.Flicker free, in stable condition, its colour temperature change curve is controlled.
Embodiment six:
Embodiments of the invention six, are the pole-changing light modulating devices of a while bidirectional modulation colour temperature and light output, are called for short the scheme of " two light modulation look ", and the modular structure figure of this device as shown in Figure 9; And the structure of this scheme and embodiment's five is similar, main difference is the setting of MCU module.Its difference is:
In embodiment five, the drive output 23 of MCU module, these those long pwm signals that disappear of a duty ratio are exported respectively at its two ends, and two LED loads 22 of this pwm signal drive are worked.In the present embodiment six, being set as follows of drive output 23:
In the time of the first utmost point signal A in polarization switch module 10 its output output maps 2, drive output 23 is stablized PWM duty ratio, final two LED modules 26 in stable condition, and the therefore light of terminal 20 output, colour temperature are stablized constant;
In the time of the second utmost point signal B in output 12 output maps 2, MCU module U3 is read as " circulation light modulation " pattern, the synchronous PWM modulation signal changing of drive output 23 output, to such an extent as to the synchronous variation of LED module 26 light output, especially, so light exporting change trend can move in circles---, as long as make output 12 export the first utmost point signal A, can realize the light of terminal 20 and export the variation that moves in circles;
In the time of AC signal C in output 12 output maps 2, MCU module U3 is read as " circulation toning " pattern, these those long PWM modulation signals that disappear of drive output 23 output duty cycles under this pattern, to such an extent as to the light of two LED modules 26 output inverse change, thereby realize the variation that moves in circles of light output colour temperature that terminal 10 superposes.
Visible, use equally K1 and the K2 of two button forms, light output, the colour temperature that can the realize terminal 20 electrodeless variation that circulates, operation is very simple, quick.
Above embodiment, under the prompting of technical solution of the present invention, its PWM modulated process, LED module drive process to utilize existing conventional LED Driving technique to realize by existing technical staff.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of doing according to the scope of the claims 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. pole-changing driving method, is characterized in that:
An input power signal to single phase alternating current (A.C.) form is processed, obtain three kinds of average powers identical, the power output signal with opposed polarity feature exported, respectively:
The first utmost point signal, for carrying out described input power signal the full-wave rectification person that obtains direct current;
The second utmost point signal, for the antipodal direct current person of described the first utmost point signal polarity; And
AC signal, the described input power signal not dealing with is directly exported;
Wherein, three kinds of above-mentioned power output signals are switched extraction one wherein, from the output output sharing; Described output is connected in terminal, has the form of both-end; Described terminal has polarity arbitration functions, carrys out the corresponding response of making differing from one another according at least two kinds in above-mentioned three kinds of described power output signals; Described output is multiplexed with the power end of described terminal simultaneously.
2. pole-changing light modulating device, is characterized in that: it comprises a polarization switch and at least one terminal, wherein
Described polarization switch comprises:
One input, is connected in an input power signal of single phase alternating current (A.C.) form;
One rectifier bridge, is connected in described input, has the DC terminal of described input power signal full-wave rectification output; And
Switches set is communicated with described input, rectifier bridge simultaneously, has an output; This switches set switchably makes described output export a power output signal, this power output signal comprises at least two kinds in following three kinds of signals by its polar character, respectively: an AC signal identical with described input power signal, from one first utmost point signal of described DC terminal and second utmost point signal contrary with described the first utmost point signal polarity;
Described terminal comprises:
One pole-changing detection module, this pole-changing detection module connects described output, according to the polarization state of described power output signal, obtains different driving signals, then exports a driving control end to;
LED load, connects described driving control end, according to its inner LED module of state-driven of described driving signal, makes it comprise that in corresponding difference light leads to and/or the output state of colour temperature.
3. pole-changing light modulating device according to claim 2, is characterized in that: described switches set comprises the first switch of dpdt double-pole double-throw (DPDT), two common ports of this first switch are as described output; Wherein two in-phase ends are connected in described input, and another two in-phase ends are connected in described DC terminal.
4. pole-changing light modulating device according to claim 2, is characterized in that: described switches set also comprises the first switch and the second switch of dpdt double-pole double-throw (DPDT); Two common ports of described the first switch are as described output;
Two common ports of described second switch connect described DC terminal; And the in-phase end of this second switch is connected with the end of oppisite phase of its inner another sub-switch separately, form a commutation end of both-end; Two in-phase ends of described the first switch are connected in described input, and another two in-phase ends are connected in described commutation end.
5. pole-changing light modulating device according to claim 2, is characterized in that: the voltage segment of described power output signal is carried out detection by described pole-changing detection module, to judge its polarity.
6. pole-changing light modulating device according to claim 2, is characterized in that: described pole-changing detection module comprises an optocoupler, and its input forward accesses the loop of described power output signal.
7. pole-changing light modulating device according to claim 2, is characterized in that: described pole-changing detection module its to drive driving signal of control end output be the gating signal that low and high level indicates; Described output state is that the stable light corresponding with described driving signal leads to and/or colour temperature.
8. pole-changing light modulating device according to claim 2, is characterized in that: described pole-changing detection module its to drive driving signal of control end output be that duty ratio continues the pwm signal or the level continually varying am signals that change; Described LED load adopts PWM modulation system or amplitude modulation(PAM) mode to drive described LED module accordingly, and described output state comprises that the stable light corresponding with described driving signal leads to and/or colour temperature, and the light constantly changing is logical and/or colour temperature.
9. pole-changing light modulating device according to claim 8, is characterized in that: described driving signal is pwm signal or the described am signals that duty ratio back and forth changes; Described output state is when in light, logical and/or colour temperature constantly changes, and its version be corresponding back and forth variation.
10. pole-changing light modulating device according to claim 8, is characterized in that: the variation pattern of described colour temperature is: adopt the LED load of at least two group different-colours; In described output state, having a state at least is that its luminous flux separately of these two groups of LED loads has different variation tendencies, produces that the light mixing is logical has a corresponding different colour temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127389.7A CN102695333B (en) | 2012-04-26 | 2012-04-26 | Pole-changing driving method and pole-changing dimming apparatus utilizing pole-changing driving method |
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Effective date of registration: 20160831 Address after: 361000, Xiamen District, Haicang District, Fujian Province Road, No. 88, science building, two floor, A District Patentee after: Xiamen Ennai Lighting Technology Co., Ltd. Address before: 361000 Xiamen Province, Haicang District, Fujian Road No. 88 Patentee before: Xiamen Yankon Energetic Lighting Co., Ltd. |
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Effective date of registration: 20200415 Address after: Xinyang Industrial Park Haicang District of Xiamen City, Fujian province 361000 after Cheung Road No. 88 Patentee after: XIAMEN YANKON ENERGETIC LIGHTING Co.,Ltd. Address before: 361000, Xiamen District, Haicang District, Fujian Province Road, No. 88, science building, two floor, A District Patentee before: Xiamen Energetic Lighting Co.,Ltd. |