CN102355776B - Light modulator - Google Patents
Light modulator Download PDFInfo
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- CN102355776B CN102355776B CN201110255752.9A CN201110255752A CN102355776B CN 102355776 B CN102355776 B CN 102355776B CN 201110255752 A CN201110255752 A CN 201110255752A CN 102355776 B CN102355776 B CN 102355776B
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Abstract
The invention relates to a light modulator, which comprises a light-modulating control circuit the output end of which is connected with an external load. The light modulator is characterized by further comprising a CPU (center processing unit) capable of detecting the frequency of an external input power supply and outputting different control signals to the light-modulating control circuit, so as to control the brightness value of the external input power supply; the external input power supply accesses to the power input of the CPU after connection with a voltage step-down circuit, so as to supply power for the CPU; and the external input power supply is connected with the CPU by an in-phase detecting circuit, such that the CPU can detect the frequency of the external input power supply. Compared with those in the prior art, the light modulator provided by the invention has the advantages of being a full voltage backward-shifting phase light modulator, suitable for power grids in all countries in the world, capable of detecting power grid frequency, and automatically shifting operating modes, with a load range from 1w to full power, and a wide range of light modulation from 3% to 99%.
Description
Technical field
The present invention relates to a kind of dimmer.
Background technology
The input voltage of common dimmer can only meet a certain section of voltage (as 220-240V), and the difference of mains frequency also can make dimming behavior variation.Load can not be too little, and dimming scope is adjusted less than 99% (being generally 70-80%).
Summary of the invention
Technical problem to be solved by this invention be for above-mentioned prior art provide electrical network that a kind of energy is applicable to global various countries, and can detection of grid frequency, the dimmer that dimming scope is wider.
The present invention solves the problems of the technologies described above adopted technical scheme: this dimmer, the adjusting control circuit that comprises output termination external loading, it is characterized in that: also comprise and can detect external input power frequency values, thereby and can export different control signals and to described adjusting control circuit, control the central processing unit of external loading brightness value, thereby external input power connect access described central controller after a reduction voltage circuit power input to described central processing unit power supply, thereby external input power is connected with described central processing unit and is made described central processing unit detect external input power frequency values by phase detecting circuit together.
As improvement, dimmer provided by the invention also comprises current foldback circuit, and the input of this current foldback circuit is connected with described adjusting control circuit, and the output of described current foldback circuit is connected with described central processing unit.
Preferably; described adjusting control circuit comprises a switching tube; described current foldback circuit comprises an optocoupler; in described adjusting control circuit, the source electrode of switching tube is connected with the input of optocoupler by a resistance; the output of optocoupler is connected with described central processing unit overcurrent protection input; described central processing unit is according to the over-current signal of overcurrent protection input input, thereby output control signal turn-offs described external loading to described adjusting control circuit.
Improve, dimmer provided by the invention also comprises touch control circuit again, and the output of this touch control circuit is connected with described central processing unit.
Improve, dimmer provided by the invention also comprises a mechanical switch again, and the first end of this mechanical switch is connected with described reduction voltage circuit output after connecting an electric capacity, and the second end of described mechanical switch is connected with described touch control circuit.
Improve, dimmer provided by the invention also comprises that dimming scope arranges circuit again, and the output that this dimming scope arranges circuit is connected with described central processing unit.
Improve, dimmer provided by the invention also comprises full bridge rectifier again, and the input of this full bridge rectifier is connected with described external input power, thereby the output of this full bridge rectifier is connected with described adjusting control circuit to described adjusting control circuit power supply
Compared with prior art, the invention has the advantages that: dimmer provided by the invention is phase shift dimmer after full voltage, be applicable to the electrical network of global various countries, it can detection of grid frequency, automatically transformation working pattern.Loading range can be from 1W to full power.Applicable load has: electronic transformer, dimmable energy-saving lamp, dimmable fluorescent lamp, Dimmable LED driver.Dimming scope is wider, can be adjusted to 99% from 3%.For meeting unequally loaded dimming scope, product is provided with dimming scope circuit is set.Product brightness adjustment control is for touching input or switch input.Product has overload protection function and overheat protector function.Product quiescent dissipation is low.
Accompanying drawing explanation
Fig. 1 is the module frame chart of dimmer in the embodiment of the present invention.
Fig. 2 is the circuit theory diagrams of dimmer in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Dimmer as shown in Figure 1, it comprises reduction voltage circuit 1, central processing unit 2, adjusting control circuit 3, with phase detecting circuit 4, full bridge rectifier 5, touch control circuit 6, dimming scope arranges circuit 7, current foldback circuit 8, mechanical switch 9 and touch-screen 10, wherein the input of reduction voltage circuit 1 is connected with external input power, the voltage of external input power can be from 100V to 240V, frequency can be 50HZ, also can be 60HZ, thereby the power input of the output of reduction voltage circuit 1 access central controller 2 gives central processing unit 2 power supplies, thereby external input power is connected and makes described central processing unit 2 can detect external input power frequency values with described central processing unit 2 by same phase detecting circuit 4 in addition, the output of central processing unit 2 is connected with adjusting control circuit 3, the output termination external modulation tool load 11 of adjusting control circuit 3, this central processing unit 2 can detect external input power frequency values, thereby and can export different control signals and control external loading brightness value to described adjusting control circuit, the output of touch control circuit 6 is connected with described central processing unit 2, makes the brightness of external load can pass through touch control, the first end of mechanical switch 9 is connected with described reduction voltage circuit 1 output after connecting an electric capacity, and the second end of described mechanical switch 9 is connected with described touch control circuit 6, and the brightness of external load also can be controlled by mechanical switch, the output that dimming scope arranges circuit is connected with described central processing unit, makes dimmer provided by the invention can meet unequally loaded dimming scope, the input of full bridge rectifier 5 is connected with described external input power, thereby the output of this full bridge rectifier 5 is connected with described adjusting control circuit 3 to described adjusting control circuit 3 power supplies, current foldback circuit 8 inputs are connected with described adjusting control circuit 3, and the output of described current foldback circuit 8 is connected with described central processing unit 2.
Reduction voltage circuit 1 adopts custom circuit, in the present embodiment, reduction voltage circuit 1 comprises the second capacitor C 2, the 3rd diode D3, the 5th diode D5, the 6th capacitor C 6, the 7th resistance R 7, the tenth resistance R 10, the 21 resistance R 21, the 24 resistance R 24, shown in Figure 2, its composition RC reduction voltage circuit is connected with the power supply input pin of central processing unit 2 and offers the 5V power supply that central processing unit 2 uses, the 5th resistance, the 6th resistance, the 6th diode forms the zero passage detection pin with phase detecting circuit 4 access central processing units 2, when external input power is positive phase time, the zero passage detection pin of central processing unit 2 is 5V voltage, when more external input power is anti-phase, the zero passage detection pin of central processing unit 2 is-0.7V voltage.
In the present embodiment, central processing unit 2 adopts the processor of single chip computer that model is 12F675, shown in Figure 2, its the 1st pin is power supply input pin, and the 2nd pin is that control inputs pin is connected with the output of touch control circuit 6, and the 3rd pin is that zero passage detection pin is connected with same phase detecting circuit, the 7th pin is that light modulation arranges pin, with dimming scope, circuit is set and is connected, the 6th pin is output pin, for exporting to pwm signal to adjusting control circuit; The 5th pin is overcurrent protection pin, is connected with the output of current foldback circuit.The first end of the 7th capacitor C 7 is connected with the 5th pin of single-chip microcomputer, the second end ground connection of the 7th capacitor C 7, and the effect of the 7th capacitor C 7 is delay protections while making circuit start, if the too large short-circuit protection response of C7 capacity is just slow, easy burn-out Q1 during short circuit; If the too little short-circuit protection of C7 capacity is too fast, during start, because making circuit, the little meeting of load cold-state resistance enters overload protection state, be difficult for start.
Adjusting control circuit 3 adopts custom circuit, the present embodiment comprises the 14 resistance R 14, optocoupler N2, the first resistance R 1, the first capacitor C 1, the second diode D2, the first diode D1, the 18 resistance R the 18, the 19 resistance R the 19, the 25 resistance R the 25, the 12 resistance R the 12, the 15 resistance R 15 and field effect transistor Q1, shown in Figure 2.The first resistance R the 1, the 18 resistance R the 18, the 19 resistance R the 19, the 25 resistance R 25, the first diode D1, the second diode D2, the first capacitor C 1 form second group of power supply, magnitude of voltage is 15V left and right, the 14 resistance R 14, optocoupler N2, the 15 resistance R 15 form isolated drive circuit, phase place is identical, field effect transistor Q1 is switching tube, is the Primary Component of low voltage control high-voltage switch gear.
And fuse F1 and temperature switch FH1, the 5th capacitor C 5, piezo-resistance FV1 be connected on external input power, for the protection of voltage stabilization, use.
Touch control circuit 6 also adopts custom circuit, and in the present embodiment, it comprises that model is that IQS127 touches chip and peripheral circuit forms, and in the present embodiment, dimmer has two kinds of control models: outside connected switch is controlled or touch control, also can two kinds of patterns use simultaneously.Touch signal is inputted through the 4th capacitor C the 4, the 12 capacitor C 12 to 6 pin (touch input) that touch chip I QS127 from 2 pin of interface CN3, before input, through the 13 capacitor C 13 decay, in order to reduce touch sensitivity, (because touching chip I QS127, can noncontact induction control, this product does not require so high sensitivity), be simultaneously used for antistatic with the 13 capacitor C 13 a piezo-resistance F V2.When external mechanical switch is controlled light modulation, touch input and be connected with 5V power supply through outside connected switch, the 3rd capacitor C 3.After mechanical switch is connected, simulation human body touch is controlled light modulation.After touch chip I QS127S receives effective touch signal, 1 pin becomes low level from original high level.Low level pulsewidth equates with the duration that touches input, but after the touch time is greater than about 20 seconds, touch chip I QS127S just stops corresponding, and output (1 pin) just becomes high level, after decontroling, again touches and just can come into force.
Dimming scope arranges circuit 7 and also adopts custom circuit, in the present embodiment, it comprises biswitch S1, the 4th resistance R the 4, the 22 resistance R the 22, the 23 resistance R 23, the 3rd resistance R 3, shown in Figure 2, biswitch S1 has 4 kinds of states, be respectively 00 (closing), 01 (open pass), 10 (switches), 11 (opening), make single-chip microcomputer the 7th pin form 4 kinds of different current potentials and do AD input.After single-chip microcomputer is processed, can make the minimum of dimmer adjust light varience, coordinate the different dimming scopes of different loads needs.
Claims (5)
1. a dimmer, the adjusting control circuit that comprises output termination external loading, it is characterized in that: thus also comprise and can detect external input power frequency values, and can export different control signals to the central processing unit of described adjusting control circuit control external loading brightness value, thereby external input power connect access described central controller after a reduction voltage circuit power input to described central processing unit power supply, thereby external input power is connected with described central processing unit and is made described central processing unit detect external input power frequency values by phase detecting circuit together;
Also comprise current foldback circuit, the input of this current foldback circuit is connected with described adjusting control circuit, the output of described current foldback circuit is connected concrete with described central processing unit: described current foldback circuit comprises the 3rd optocoupler (N3), the 13 resistance (R13), the 17 resistance (R17) and the second resistance (R2), described adjusting control circuit comprises the 14 resistance (R14), the second optocoupler (N2), the first resistance (R1), the first electric capacity (C1), the second diode (D2), the first diode (D1), the 18 resistance (R18), the 19 resistance (R19), the 25 resistance (R25), the 12 resistance (R12), the 15 resistance (R15) and field effect transistor (Q1), the switch controlling signal end of described central controller is connected with 1 pin of the second optocoupler (N2) after connecting the 14 resistance (R14), 2 pin ground connection of the second optocoupler (N2), after connecting the 12 resistance (R12), 3 pins of the second optocoupler (N2) are connected with the grid of field effect transistor (Q1), 4 pins of the second optocoupler (N2) are connected with the negative electrode of the second diode (D2), and the anode of the second diode (D2) connects the first resistance (R1), the 18 resistance (R18), the 19 resistance (R19), the rear ground connection of the 25 resistance (R25) successively, the source electrode of field effect transistor in described adjusting control circuit (Q1) connects the 13 resistance (R13) and is connected with the input of the 3rd optocoupler (N3), the source electrode of field effect transistor (Q1) connects the rear ground connection of the 17 resistance (R17), the output of the 3rd optocoupler (N3) is connected with the overcurrent protection input of central controller after connecting the second resistance (R2), central controller is according to the over-current signal of overcurrent protection input input, thereby output control signal turn-offs described external loading to described adjusting control circuit.
2. dimmer according to claim 1, is characterized in that: also comprise touch control circuit, the output of this touch control circuit is connected with described central processing unit.
3. dimmer according to claim 2, is characterized in that: also comprise a mechanical switch, the first end of this mechanical switch is connected with described reduction voltage circuit output after connecting an electric capacity, and the second end of described mechanical switch is connected with described touch control circuit.
4. dimmer according to claim 1, is characterized in that: also comprise that dimming scope arranges circuit, the output that this dimming scope arranges circuit is connected with described central processing unit.
5. dimmer according to claim 1, it is characterized in that: also comprise full bridge rectifier, the input of this full bridge rectifier is connected with described external input power, thereby the output of this full bridge rectifier is connected with described adjusting control circuit to described adjusting control circuit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255752.9A CN102355776B (en) | 2011-08-25 | 2011-08-25 | Light modulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255752.9A CN102355776B (en) | 2011-08-25 | 2011-08-25 | Light modulator |
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| Publication Number | Publication Date |
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| CN102355776A CN102355776A (en) | 2012-02-15 |
| CN102355776B true CN102355776B (en) | 2014-04-16 |
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| CN201110255752.9A Active CN102355776B (en) | 2011-08-25 | 2011-08-25 | Light modulator |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102858070B (en) * | 2012-09-25 | 2015-03-04 | 丰唐物联技术（深圳）有限公司 | Regulating circuit for MOS (Metal-Oxide Semiconductor) tube control load |
| CN103687158B (en) * | 2012-09-25 | 2016-07-27 | 东莞市振源机械设备有限公司 | Capacitance touch dimmer switch |
| CN105387569B (en) | 2015-11-30 | 2019-03-05 | 珠海格力电器股份有限公司 | PV air-conditioner system control method and device |
| CN208273313U (en) * | 2018-05-17 | 2018-12-21 | 珠海市圣昌电子有限公司 | A kind of single-entry single-out touch phase-cut dimming controller |
| CN108601177B (en) * | 2018-05-17 | 2024-04-09 | 珠海市圣昌电子有限公司 | Single-in single-out touch phase-cut dimming controller |
| CN109548239B (en) * | 2018-12-13 | 2020-08-11 | 东南大学 | LED lamp power supply control device with virtual synchronous machine response mechanism |
| CN110611983A (en) * | 2019-09-03 | 2019-12-24 | 英特曼电工（常州）有限公司 | Single-live-wire multifunctional dimmer |
| CN111565036A (en) * | 2020-06-12 | 2020-08-21 | 泰力实业有限公司 | Sliding touch control lamp switch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201657476U (en) * | 2010-03-19 | 2010-11-24 | 石狮永峰电子有限公司 | Multipurpose dimmer |
| CN202183903U (en) * | 2011-08-25 | 2012-04-04 | 林万炯 | Light modulator |
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2011
- 2011-08-25 CN CN201110255752.9A patent/CN102355776B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201657476U (en) * | 2010-03-19 | 2010-11-24 | 石狮永峰电子有限公司 | Multipurpose dimmer |
| CN202183903U (en) * | 2011-08-25 | 2012-04-04 | 林万炯 | Light modulator |
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| CN102355776A (en) | 2012-02-15 |
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Owner name: NINGBO HI. TECH. PARK SELF ELECTRONICS CO., LTD. Free format text: FORMER OWNER: LIN WANJIONG Effective date: 20141008 |
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Effective date of registration: 20141008 Address after: The national high tech Zone Juxian 315103 Ningbo Road, Zhejiang province No. 1345 Patentee after: SELF ELECTRONICS CO.,LTD. Address before: 315103 Zhejiang city of Ningbo province high tech Zone Juxian Road No. 1345 Ningbo Purcell Electronics Ltd. Patentee before: Lin Wanjiong |
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Address after: The national high tech Zone Juxian 315103 Ningbo Road, Zhejiang province No. 1345 Patentee after: SELF ELECTRONICS CO., LTD. Address before: The national high tech Zone Juxian 315103 Ningbo Road, Zhejiang province No. 1345 Patentee before: SELF ELECTRONICS CO.,LTD. |