CN101938869A - Direct current (DC) control device in alternating current (AC) system - Google Patents
Direct current (DC) control device in alternating current (AC) system Download PDFInfo
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- CN101938869A CN101938869A CN2009101084319A CN200910108431A CN101938869A CN 101938869 A CN101938869 A CN 101938869A CN 2009101084319 A CN2009101084319 A CN 2009101084319A CN 200910108431 A CN200910108431 A CN 200910108431A CN 101938869 A CN101938869 A CN 101938869A
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Abstract
The invention relates to a direct current (DC) control device in an alternating current (AC) system, comprising a modulation switch, an AC/DC converting module and a switching detection module, wherein the modulation switch comprises an on state, an off state and a modulation state; the AC/DC converting module is used for receiving AC under the control of the modulation switch and converting the received AC into DC; the switching detection module is used for receiving the modulation state of the modulation switch and DC output by the AC/DC converting module and outputting a DC control signal on the basis of the modulation state and the DC. By adopting the DC control device, the control to the DC system is realized on the premise of not changing an original illuminating line through adopting the modulation switch and the AC/DC converting module in the AC system so as to be convenient for realizing the application of the DC system in AC environment.
Description
Technical field
The present invention relates to the control of direct current signal, more particularly, relate to the direct-flow controlling device in a kind of AC system.
Background technology
Semiconductor lighting will be expanded to general lighting later on mainly based on photochromic illumination and special lighting at present.In recent years, semiconductor lighting market will be widely used in the beautifying of various signal lamps, Landscape Lighting, show window illumination, architectural lighting, square and street, home decoration illumination, the place of public amusement is beautified and fields such as stage effect illumination.Under the same brightness, the power consumption of LED only is 1/10 of an incandescent lamp, and the life-span then is 100 times of incandescent lamp.Because LED has advantages such as energy-saving and environmental protection, the life-span is long, volume is little, with the leap again after incandescent lamp and fluorescent lamp on the human illumination in the city history.
General lighting LED drives block diagram as shown in Figure 1, by mains switch, and the opening and closing of the LED that the user often can only control, and can not control its brightness.Want to control brightness and must control the electric current that offers light-emitting diode, just want to control the LED driver module.Yet the LED driver module is in direct current system, and controlling it needs direct current signal.Usually, mains switch all is to be provided with near the AC power, and LED driver module and light-emitting diode distance are closer with the AC-DC modular converter, offer the LED driver module so that the AC-DC modular converter is produced direct current.Because direct current signal is unfavorable for long-distance transmissions, therefore, be unpractiaca near wanting to move the LED driver module to mains switch that the user can touch.
Thus, need a kind of direct-flow controlling device, can be so that the mains switch side of user in existing AC system be controlled direct current signal effectively.
Summary of the invention
The technical problem to be solved in the present invention is, at the user of prior art can't be in AC system the defective of mains switch side control direct current signal, a kind of direct-flow controlling device is provided, can be so that the mains switch side of user in existing AC system be controlled direct current signal effectively.
The technical solution adopted for the present invention to solve the technical problems is: construct the direct-flow controlling device in a kind of AC system, it is characterized in that, comprising:
Modulation switch, described modulation switch comprises opening, closed condition and modulation condition;
The AC/DC modular converter is used for receiving alternating current and convert the described alternating current that receives to direct current under the control of described modulation switch;
The switch detecting module is used to receive the modulation condition of described modulation switch and the direct current of described AC/DC module output, and based on described modulation condition and direct current output dc control signal.
In direct-flow controlling device of the present invention, described modulation switch comprises moving contact, closing contact, break contact, modulation contact and diode, the anode of wherein said diode is connected to the modulation contact, negative electrode is connected to closing contact, produces modulation condition when described moving contact is connected to the modulation contact.
In direct-flow controlling device of the present invention, described modulation switch comprises moving contact, closing contact, break contact, modulation contact and diode, the negative electrode of wherein said diode is connected to the modulation contact, anode is connected to closing contact, produces modulation condition when described moving contact is connected to the modulation contact.
In direct-flow controlling device of the present invention, described AC/DC modular converter comprises transformer, rectification full-bridge, direct current output diode and direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
One end on the former limit of wherein said transformer is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to and exchanges ground, first and second inputs of described rectification full-bridge are connected to the two ends of the secondary of transformer, first output of described rectification full-bridge is connected to the anode of direct current output diode and the anode of described modulation condition output diode, the negative electrode of described direct current output diode is connected to the positive pole of direct current output capacitance, the negative pole of described direct current output capacitance is connected to second output of described rectification full-bridge and the negative pole of described modulation condition output capacitance, the negative electrode of described modulation condition output diode is connected to the anode of modulation condition output capacitance, and described first resistance is connected to the two ends of described modulation condition output capacitance.
In direct-flow controlling device of the present invention, described AC/DC modular converter comprises transformer, rectification full-bridge, rectification half-bridge, direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
One end on the former limit of wherein said transformer is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to and exchanges ground, first and second inputs of described rectification full-bridge are connected to the two ends of the secondary of transformer, and first and second outputs of described rectification full-bridge are connected respectively to the positive pole and the negative pole of described direct current output capacitance;
First and second inputs of described rectification half-bridge are connected respectively to the secondary of described transformer, output is connected to the anode of described modulation condition output diode, the negative electrode of described modulation condition output diode is connected to the anode of described modulation condition output capacitance, the negative electrode of described modulation condition output capacitance is connected to the negative pole of described direct current output capacitance, and described first resistance is connected to the two ends of described modulation condition output capacitance.
In direct-flow controlling device of the present invention, the AC/DC modular converter comprises the first rectification full-bridge, the second rectification full-bridge, direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
Wherein, the first input end of the described first rectification full-bridge is connected to AC power through modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of described modulation condition output diode, the negative electrode of described modulation condition output diode is connected to the positive pole of modulation condition output capacitance, the negative pole of described modulation condition output capacitance is connected to second output of the described first rectification full-bridge, second output of the described first rectification full-bridge is connected to direct current ground simultaneously, and described first resistance is connected between the positive pole and negative pole of described modulation condition output capacitance;
The first input end of the described second rectification full-bridge is connected to AC power, second input is connected to and exchanges ground, first output is connected to the anode of described direct current output capacitance, the negative pole of described direct current output capacitance is connected to second output of the described second rectification full-bridge, and second output of the described second rectification full-bridge is connected to direct current ground simultaneously.
In direct-flow controlling device of the present invention, the AC/DC modular converter further comprises first transformer and second transformer, the first input end of the described first rectification full-bridge and second input are connected respectively to the secondary of described first transformer, one end on the former limit of described first transformer is connected to AC power through modulation switch, and the other end is connected to and exchanges ground;
The first input end of the described second rectification full-bridge and second input are connected respectively to the secondary of described second transformer, and an end on the former limit of described second transformer is connected to AC power, and the other end is connected to and exchanges ground.
In direct-flow controlling device of the present invention, the AC/DC modular converter comprises the first rectification full-bridge, the second rectification full-bridge, direct current output capacitance, direct current output diode, the first modulation condition output diode, the first modulation condition output capacitance and first resistance; And the second modulation condition output diode, the second modulation condition output capacitance and second resistance;
The first input end of the wherein said first rectification full-bridge is connected to AC power through first modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of the described first modulation condition output diode, the negative electrode of the described first modulation condition output diode is connected to the positive pole of the first modulation condition output capacitance, the negative pole of the described first modulation condition output capacitance is connected to second output of the described first rectification full-bridge, second output of the described first rectification full-bridge is connected to direct current ground simultaneously, and described first resistance is connected between the positive pole and negative pole of the described first modulation condition output capacitance;
The first input end of the described second rectification full-bridge is connected to AC power through second modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of the described second modulation condition output diode and the anode of direct current output diode, the negative electrode of the described second modulation condition output diode is connected to the positive pole of the second modulation condition output capacitance, the negative pole of the described second modulation condition output capacitance is connected to second output of the described second rectification full-bridge, second output of the described second rectification full-bridge is connected to direct current ground simultaneously, described second resistance is connected between the positive pole and negative pole of the described second modulation condition output capacitance, the negative electrode of described direct current output diode is connected to the positive pole of described direct current output capacitance, and the negative electrode of described direct current output capacitance is connected to direct current ground.
In direct-flow controlling device of the present invention, described switch detecting module obtains direct current from described direct current output capacitance, obtains first modulation condition from described first resistance.
In direct-flow controlling device of the present invention, described switch detecting module obtains second modulation condition from described second resistance.
In direct-flow controlling device of the present invention, described switch detecting module comprises:
The modulation condition acquisition module is used to obtain modulation condition;
The brightness regulation module is used for changing LED brightness according to described modulation condition control LED driver module;
Memory module is used to store LED brightness.
Implement direct-flow controlling device of the present invention, by adopt modulation switch and AC/DC modular converter in AC system, do not change the control that realizes under original illuminating line prerequisite direct current system, the convenient direct current system that realizes is used under communication environment.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is that the illumination LED of prior art drives block diagram;
Fig. 2 is the schematic diagram of modulation switch of the present invention;
Fig. 3 is the theory diagram of direct-flow controlling device of the present invention;
Fig. 4 is the theory diagram of first embodiment of direct-flow controlling device of the present invention;
Fig. 5 is the full-wave rectification output of modulation condition of first embodiment of the direct-flow controlling device of the present invention of Fig. 4;
Fig. 6 is the theory diagram of second embodiment of direct-flow controlling device of the present invention;
Fig. 7 is the halfwave rectifier output of modulation condition of second embodiment of the direct-flow controlling device of the present invention of Fig. 6;
Fig. 8 is the theory diagram of the 3rd embodiment of direct-flow controlling device of the present invention;
Fig. 9 is the theory diagram of the 4th embodiment of direct-flow controlling device of the present invention;
Figure 10 is the theory diagram of the 5th embodiment of direct-flow controlling device of the present invention;
Figure 11 is the theory diagram that direct-flow controlling device of the present invention is used in the LED system;
Figure 12 is the first control algolithm schematic diagram during the direct-flow controlling device of the present invention shown in Figure 11 is used in the LED system;
Figure 13 is the second control algolithm schematic diagram during the direct-flow controlling device of the present invention shown in Figure 11 is used in the LED system.
Embodiment
Fig. 2 is the schematic diagram of modulation switch of the present invention.As shown in Figure 2, modulation switch of the present invention comprises moving contact 1, closing contact 2, break contact 4, modulation contact 3 and diode, the anode of wherein said diode is connected to modulation contact 3, negative electrode is connected to closing contact 2, when described moving contact 1 is connected to modulation contact 2, can produce modulation condition.
In another embodiment of the present invention, diode in the described modulation switch can be reverse, just modulation switch comprises moving contact 1, closing contact 2, break contact 4, modulation contact 3 and diode, the negative electrode of wherein said diode is connected to modulation contact 3, anode is connected to closing contact 2, when described moving contact 1 is connected to modulation contact 2, can produce modulation condition.And the control principle of this modulation switch and the modulation switch shown in Fig. 2 are similar.Modulation switch with Fig. 2 is that example describes below.
Fig. 3 is the theory diagram of direct-flow controlling device of the present invention.As shown in Figure 3, direct-flow controlling device of the present invention comprises, modulation switch as shown in Figure 2, AC/DC modular converter and switch detecting module.Described modulation switch comprises opening, closed condition and modulation condition.Described AC/DC modular converter is used for receiving alternating current and convert the described alternating current that receives to direct current under the control of described modulation switch.Described switch detecting module is used to receive the modulation condition of described modulation switch and the direct current of described AC/DC module output, and based on described modulation condition and direct current output dc control signal.
Fig. 4 is the theory diagram of first embodiment of direct-flow controlling device of the present invention.As shown in Figure 4, direct-flow controlling device of the present invention comprises and is connected to modulation switch, AC/DC modular converter and switch detecting module.Wherein said AC/DC module comprises transformer T, rectification full-bridge BR1, direct current output diode D1 and direct current output capacitance C1, modulation condition output diode D2, modulation condition output capacitance C2 and first resistance R.One end on the former limit of wherein said transformer T is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to and exchanges ground, first and second inputs of described rectification full-bridge BR1 are connected to the two ends of the secondary of transformer T, first output of described rectification full-bridge BR1 is connected to the anode of direct current output diode D1 and the anode of described modulation condition output diode D2, the negative electrode of described direct current output diode D1 is connected to the positive pole of direct current output capacitance C1, the negative pole of described direct current output capacitance C1 is connected to second output of described rectification full-bridge BR1 and the negative pole of described modulation condition output capacitance C2, the negative electrode of described modulation condition output diode D2 is connected to the anode of modulation condition output capacitance C1, and described first resistance R is connected to the two ends of described modulation condition output capacitance C2.
In this embodiment, the direct current output capacitance C1 provide VD, value 10uF.Modulation condition output capacitance C2 and resistance R are used for the all-wave input, value 1pF and 10M.When switch was in direct conducting state, the AC-DC conversion was to carry out full-wave rectification, and output signal process modulation condition output capacitance C2 and resistance R low-pass filtering are as shown in Figure 5.The switch detecting module can detect the variation of Vout signal by the whole bag of tricks like this, thereby knows the state of modulation switch.
Fig. 6 is the theory diagram of second embodiment of direct-flow controlling device of the present invention.As shown in Figure 6, direct-flow controlling device of the present invention comprises and is connected to modulation switch, AC/DC modular converter and switch detecting module.Wherein said AC/DC module comprises transformer T, rectification full-bridge BR1, rectification half-bridge BR2, direct current output capacitance C1, modulation condition output diode D2, modulation condition output capacitance C2 and first resistance R.One end on the former limit of wherein said transformer T is connected to AC power through described modulation switch, and the other end on the former limit of described transformer is connected to and exchanges ground.First and second inputs of described rectification full-bridge BR1 are connected to the two ends of the secondary of transformer T, and first and second outputs of described rectification full-bridge BR1 are connected respectively to positive pole and the negative pole of described direct current output capacitance C1.First and second inputs of described rectification half-bridge BR2 are connected respectively to the secondary of described transformer T, output is connected to the anode of described modulation condition output diode D2, the negative electrode of described modulation condition output diode D2 is connected to the anode of described modulation condition output capacitance C2, the negative electrode of described modulation condition output capacitance C2 is connected to the negative pole of described direct current output capacitance C1, and described first resistance R is connected to the two ends of described modulation condition output capacitance C2.
In this embodiment, the direct current output capacitance C1 provide VD, value 10uF.Modulation condition output capacitance C2 and resistance R are used for half-wave voltage signal and detect value 1pF and 10M.When switch was in direct conducting state, the AC-DC conversion was to carry out halfwave rectifier, and output signal process modulation condition output capacitance C2 and resistance R low-pass filtering are as shown in Figure 7.The switch detecting module can detect the variation of Vout signal by the whole bag of tricks like this, thereby knows the state of modulation switch.
For the most direct simple signal of Vout signal is to carry out frequency measurement, and obviously all-wave and halfwave rectifier output frequency differ one times.If exchanging the frequency of input is f, modulation switch is in modulation condition (when being the diode conducting state) so, and the frequency of Vout is exactly f/2, and the Vout frequency to keep the time of f/2 be exactly the time that modulation switch is in the diode conducting state.Just described switch detecting module can detect the time that modulation switch is in modulation condition.The use that can make modulation switch that is used becomes more flexible to this time variable.
Fig. 8 is the theory diagram of the 3rd embodiment of direct-flow controlling device of the present invention.As shown in Figure 8, direct-flow controlling device of the present invention comprises and is connected to modulation switch, AC/DC modular converter and switch detecting module.Wherein said AC/DC module comprises rectification full-bridge BR1, rectification full-bridge BR2, direct current output capacitance C1, modulation condition output diode D2, modulation condition output capacitance C2 and first resistance R 1.The first input end of described rectification full-bridge BR1 is connected to AC power through modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of described modulation condition output diode D2, the negative electrode of described modulation condition output diode D2 is connected to the positive pole of modulation condition output capacitance C2, the negative pole of described modulation condition output capacitance C2 is connected to second output of described rectification full-bridge BR1, second output of described rectification full-bridge BR1 is connected to direct current ground simultaneously, and described first resistance R 1 is connected between the positive pole and negative pole of described modulation condition output capacitance C2.The first input end of described rectification full-bridge BR2 is connected to AC power, second input is connected to and exchanges ground, first output is connected to the anode of described direct current output capacitance C1, the negative pole of described direct current output capacitance C1 is connected to second output of described rectification full-bridge BR2, and second output of described rectification full-bridge BR2 is connected to direct current ground simultaneously.
Rectifier bridge BR2 and capacitor C 1 provide VD, value 10uF.Capacitor C 2 and resistance R are used for all-wave and half-wave voltage signal detects, value 1pF and 10M.When switch was in direct conducting state, the rectification circuit conversion was to carry out full-wave rectification, and output signal process capacitor C 2 and resistance R low-pass filtering are as shown in Figure 5.When switch was in modulation condition, the rectification circuit conversion was to carry out halfwave rectifier, and output signal process capacitor C 2 and resistance R low-pass filtering are as shown in Figure 7.The switch detecting module can detect the variation of Vout signal by the whole bag of tricks like this, thereby knows the state of modulation switch.
When supply voltage was very high, the direct voltage that rectifier bridge is changed out also can be very high, is unfavorable for back-end processing, and this just need carry out step-down to AC power, increases transforming circuit, and the DC control schematic diagram in the high AC power system as shown in Figure 9.Its control principle is identical with non-voltage-dropping type circuit.
In the embodiment shown in Fig. 8 and 9, be to carry out frequency measurement for the most direct simple signal of Vout signal, obviously all-wave and halfwave rectifier output frequency differ one times.If exchanging the frequency of input is f, when modulation switch was in modulation condition so, the frequency of Vout was exactly f/2, and the Vout frequency to keep the time of f/2 be exactly the time that modulation switch is in modulation condition.Just institute's signal detection module can detect the time that modulation switch is in modulation condition.The use that can make modulation switch that is used becomes more flexible to this time variable.
In addition, it can also be seen that,, just can increase control signals transmitted quantity as long as increase control switch.Certainly the cabling of exporting to rectification module can increase.Schematic diagram shown in Figure 8 needs three cablings just can realize single control signal to the AC/DC modular converter.
Figure 10 is the theory diagram of the 6th embodiment of direct-flow controlling device of the present invention.As shown in figure 10,, direct-flow controlling device of the present invention comprises and is connected to modulation switch, AC/DC modular converter and switch detecting module.The AC/DC modular converter comprises rectification full-bridge BR1, rectification full-bridge BR, direct current output capacitance C1, direct current output diode D1, modulation condition output diode D2, the first modulation condition output capacitance C2 and first resistance R, and modulation condition output diode D3, modulation condition output capacitance C3 and second resistance R 2.The first input end of wherein said rectification full-bridge BR1 is connected to AC power through first modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of described modulation condition output diode D2, the negative electrode of described modulation condition output diode D2 is connected to the positive pole of the first modulation condition output capacitance C2, the negative pole of the described first modulation condition output capacitance C2 is connected to second output of described rectification full-bridge BR1, second output of described rectification full-bridge BR1 is connected to direct current ground simultaneously, and described first resistance R is connected between the positive pole and negative pole of the described first modulation condition output capacitance C2.The first input end of described rectification full-bridge BR is connected to AC power through second modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of described modulation condition output diode D3 and the anode of direct current output diode D1, the negative electrode of described modulation condition output diode D3 is connected to the positive pole of modulation condition output capacitance C3, the negative pole of described modulation condition output capacitance C3 is connected to second output of described rectification full-bridge BR, second output of described rectification full-bridge BR is connected to direct current ground simultaneously, described second resistance R 2 is connected between the positive pole and negative pole of described modulation condition output capacitance C3, the negative electrode of described direct current output diode D1 is connected to the positive pole of described direct current output capacitance C1, and the negative electrode of described direct current output capacitance C1 is connected to direct current ground.
As shown in this embodiment, to the AC/DC modular converter, realize two control information transmission by three cablings.As long as that mains switch disconnects, the diode in the modulation switch will be linked in the circuit, thereby the rectification circuit of rear end correspondence becomes halfwave rectifier, output Vout signal such as Fig. 7.Equally, this circuit also can be applied in the high AC power system, and mode and Fig. 9 of increasing transforming circuit are similar, promptly increases by first and second transformers between rectification full-bridge BR1 and BR2 and AC power.
From the above analysis, direct-flow controlling device among the present invention in the AC system has only increased modulation switch in AC system, be used to control the direct current system of AC/DC circuit rear end, do not influence the power supply of system when controlling, the convenient direct current system that realizes is used under communication environment.
Figure 11 is the theory diagram that direct-flow controlling device of the present invention is used in the LED system.As shown in figure 11, direct-flow controlling device of the present invention can further comprise the modulation condition acquisition module, is used to obtain modulation condition; The brightness regulation module is used for changing LED brightness according to described modulation condition control LED driver module; Memory module is used to store LED brightness.
In one embodiment of the invention, described modulation condition acquisition module obtains modulation condition by obtaining the frequency of exporting from the vout of AC/DC module.Described brightness regulation module can be the volatility register, and it is used to store the brightness value of LED.Change of the brightness of volatility register value with regard to corresponding change LED.Described memory module can be non-volatile register, and the brightness value of storage LED all will go in the time of need not turning on light like this to transfer at every turn when being used for power down, as long as be from the non-volatile register data of reloading powering on.After the moving contact and modulation contacting of user with modulation switch, indicate to adjust LED brightness.This switch detecting module can detect the variation of Vout signal by the whole bag of tricks, thereby knows the state of modulation switch.For the most direct simple signal of Vout signal is to carry out frequency measurement, and obviously all-wave and halfwave rectifier output frequency differ one times.If exchanging the frequency of input is f, when modulation switch was in modulation condition so, the frequency of Vout was exactly f/2, and the Vout frequency to keep the time of f/2 be exactly the time that modulation switch is in modulation condition.
The time (time that diode is connected) that is in modulation condition can have different algorithms to realize with the relation of LED brightness.For example every connection register value in one second adds one, and both brightness increased one-level.If reached maximum, then each, register value subtracted one as shown in figure 11 in second.Register of perhaps every connection is only done once plus-minus, but adds or subtract by decision turn-on time as shown in figure 12.
Thus, direct-flow controlling device of the present invention can be used for the brightness regulation of LED.In other embodiments of the invention, also can adopt other modes to modulate the brightness of LED.Though the present invention describes by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (11)
1. the direct-flow controlling device in the AC system is characterized in that, comprising:
Modulation switch, described modulation switch comprises opening, closed condition and modulation condition;
The AC/DC modular converter is used for receiving alternating current and convert the described alternating current that receives to direct current under the control of described modulation switch;
The switch detecting module is used to receive the modulation condition of described modulation switch and the direct current of described AC/DC module output, and based on described modulation condition and direct current output dc control signal.
2. direct-flow controlling device according to claim 1, it is characterized in that, described modulation switch comprises moving contact, closing contact, break contact, modulation contact and diode, the anode of wherein said diode is connected to the modulation contact, negative electrode is connected to closing contact, produces modulation condition when described moving contact is connected to the modulation contact.
3. direct-flow controlling device according to claim 1, it is characterized in that, described modulation switch comprises moving contact, closing contact, break contact, modulation contact and diode, the negative electrode of wherein said diode is connected to the modulation contact, anode is connected to closing contact, produces modulation condition when described moving contact is connected to the modulation contact.
4. according to claim 2 or 3 described direct-flow controlling devices, it is characterized in that, described AC/DC modular converter comprises transformer, rectification full-bridge, direct current output diode and direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
One end on the former limit of wherein said transformer is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to and exchanges ground, first and second inputs of described rectification full-bridge are connected to the two ends of the secondary of transformer, first output of described rectification full-bridge is connected to the anode of direct current output diode and the anode of described modulation condition output diode, the negative electrode of described direct current output diode is connected to the positive pole of direct current output capacitance, the negative pole of described direct current output capacitance is connected to second output of described rectification full-bridge and the negative pole of described modulation condition output capacitance, the negative electrode of described modulation condition output diode is connected to the anode of modulation condition output capacitance, and described first resistance is connected to the two ends of described modulation condition output capacitance.
5. according to claim 2 or 3 described direct-flow controlling devices, it is characterized in that described AC/DC modular converter comprises transformer, rectification full-bridge, rectification half-bridge, direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
One end on the former limit of wherein said transformer is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to and exchanges ground, first and second inputs of described rectification full-bridge are connected to the two ends of the secondary of transformer, and first and second outputs of described rectification full-bridge are connected respectively to the positive pole and the negative pole of described direct current output capacitance;
First and second inputs of described rectification half-bridge are connected respectively to the secondary of described transformer, output is connected to the anode of described modulation condition output diode, the negative electrode of described modulation condition output diode is connected to the anode of described modulation condition output capacitance, the negative electrode of described modulation condition output capacitance is connected to the negative pole of described direct current output capacitance, and described first resistance is connected to the two ends of described modulation condition output capacitance.
6. according to the direct-flow controlling device of claim 2 or 3, it is characterized in that the AC/DC modular converter comprises the first rectification full-bridge, the second rectification full-bridge, direct current output capacitance, modulation condition output diode, modulation condition output capacitance and first resistance;
Wherein, the first input end of the described first rectification full-bridge is connected to AC power through modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of described modulation condition output diode, the negative electrode of described modulation condition output diode is connected to the positive pole of modulation condition output capacitance, the negative pole of described modulation condition output capacitance is connected to second output of the described first rectification full-bridge, second output of the described first rectification full-bridge is connected to direct current ground simultaneously, and described first resistance is connected between the positive pole and negative pole of described modulation condition output capacitance;
The first input end of the described second rectification full-bridge is connected to AC power, second input is connected to and exchanges ground, first output is connected to the anode of described direct current output capacitance, the negative pole of described direct current output capacitance is connected to second output of the described second rectification full-bridge, and second output of the described second rectification full-bridge is connected to direct current ground simultaneously.
7. according to the direct-flow controlling device of claim 6, it is characterized in that, the AC/DC modular converter further comprises first transformer and second transformer, the first input end of the described first rectification full-bridge and second input are connected respectively to the secondary of described first transformer, one end on the former limit of described first transformer is connected to AC power through modulation switch, and the other end is connected to and exchanges ground;
The first input end of the described second rectification full-bridge and second input are connected respectively to the secondary of described second transformer, and an end on the former limit of described second transformer is connected to AC power, and the other end is connected to and exchanges ground.
8. according to the direct-flow controlling device of claim 2 or 3, it is characterized in that, the AC/DC modular converter comprises the first rectification full-bridge, the second rectification full-bridge, direct current output capacitance, direct current output diode, the first modulation condition output diode, the first modulation condition output capacitance and first resistance; And the second modulation condition output diode, the second modulation condition output capacitance and second resistance;
The first input end of the wherein said first rectification full-bridge is connected to AC power through first modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of the described first modulation condition output diode, the negative electrode of the described first modulation condition output diode is connected to the positive pole of the first modulation condition output capacitance, the negative pole of the described first modulation condition output capacitance is connected to second output of the described first rectification full-bridge, second output of the described first rectification full-bridge is connected to direct current ground simultaneously, and described first resistance is connected between the positive pole and negative pole of the described first modulation condition output capacitance;
The first input end of the described second rectification full-bridge is connected to AC power through second modulation switch, second input is connected to and exchanges ground, first output is connected to the anode of the described second modulation condition output diode and the anode of direct current output diode, the negative electrode of the described second modulation condition output diode is connected to the positive pole of the second modulation condition output capacitance, the negative pole of the described second modulation condition output capacitance is connected to second output of the described second rectification full-bridge, second output of the described second rectification full-bridge is connected to direct current ground simultaneously, described second resistance is connected between the positive pole and negative pole of the described second modulation condition output capacitance, the negative electrode of described direct current output diode is connected to the positive pole of described direct current output capacitance, and the negative electrode of described direct current output capacitance is connected to direct current ground.
9. direct-flow controlling device according to Claim 8, it is characterized in that, the AC/DC modular converter further comprises first transformer and second transformer, the first input end of the described first rectification full-bridge and second input are connected respectively to the secondary of described first transformer, one end on the former limit of described first transformer is connected to AC power through modulation switch, and the other end is connected to and exchanges ground;
The first input end of the described second rectification full-bridge and second input are connected respectively to the secondary of described second transformer, and an end on the former limit of described second transformer is connected to AC power, and the other end is connected to and exchanges ground.
10. direct-flow controlling device according to claim 4 is characterized in that, described switch detecting module obtains direct current from described direct current output capacitance, obtains first modulation condition from described first resistance; Obtain second modulation condition from described second resistance.
11. direct-flow controlling device according to claim 9 is characterized in that, described switch detecting module comprises:
The modulation condition acquisition module is used to obtain modulation condition;
The brightness regulation module is used for changing LED brightness according to described modulation condition control LED driver module;
Memory module is used to store LED brightness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101084319A CN101938869B (en) | 2009-06-30 | 2009-06-30 | Direct current (DC) control device in alternating current (AC) system |
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| CN2009101084319A CN101938869B (en) | 2009-06-30 | 2009-06-30 | Direct current (DC) control device in alternating current (AC) system |
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| CN101938869B CN101938869B (en) | 2012-12-26 |
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| CN102779402A (en) * | 2012-07-19 | 2012-11-14 | 陈幼珠 | Control method and control device based on cutdown modulation of power signals |
| CN104837239A (en) * | 2015-04-03 | 2015-08-12 | 彭云 | Induction switch and control method thereof |
| CN109300889A (en) * | 2018-10-30 | 2019-02-01 | 山东晶导微电子股份有限公司 | A kind of AC-DC chip and high pressure freewheeling diode integrated chip structure and power supply mould group |
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| CN109278800B (en) * | 2018-09-05 | 2021-03-12 | 交控科技股份有限公司 | Control system and control method of direct current switch machine |
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| CN102779402B (en) * | 2012-07-19 | 2015-04-22 | 陈幼珠 | Control method and control device based on cutdown modulation of power signals |
| CN104837239A (en) * | 2015-04-03 | 2015-08-12 | 彭云 | Induction switch and control method thereof |
| CN109300889A (en) * | 2018-10-30 | 2019-02-01 | 山东晶导微电子股份有限公司 | A kind of AC-DC chip and high pressure freewheeling diode integrated chip structure and power supply mould group |
| CN109300889B (en) * | 2018-10-30 | 2023-11-24 | 山东晶导微电子股份有限公司 | AC-DC chip and high-voltage flywheel diode integrated chip structure and power supply module |
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| CN101938869B (en) | 2012-12-26 |
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