CN100438716C - Frequency-changing light-regulating control system for daylight lamp - Google Patents
Frequency-changing light-regulating control system for daylight lamp Download PDFInfo
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- CN100438716C CN100438716C CNB021421498A CN02142149A CN100438716C CN 100438716 C CN100438716 C CN 100438716C CN B021421498 A CNB021421498 A CN B021421498A CN 02142149 A CN02142149 A CN 02142149A CN 100438716 C CN100438716 C CN 100438716C
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- fluorescent lamp
- control system
- frequency conversion
- bus bar
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Abstract
The present invention provides a frequency-changing light-regulating control system for a daylight lamp, which comprises a voltage regulator for converting input voltage into bus wire voltage and a voltage stabilizer for driving the daylight lamp, wherein the output of the voltage regulator can be regulated; the reference potential of the bus wire voltage is the predetermined ratio of the input voltage, and for example, the predetermined ratio is 10%; the voltage stabilizer detects the variation of the bus wire voltage and regulates power output supplied to the daylight lamp according to the variation of the bus wire voltage or the frequency variation of a phase inverter of the voltage stabilizer to control the light intensity of the daylight lamp.
Description
(1) technical field
The present invention relates to a kind of dimming control system, particularly relate to a kind of frequency conversion dimming control system that is used for fluorescent lamp.
(2) background technology
Up to now, though all kinds of dimmer has been arranged, dimmer commonly used can be divided into two main kinds haply.First kind is electronic voltage regulator, as shown in Figure 1, known electric minor pressurizer 11 is to use four-wire type frequency conversion light adjusting system, it can utilize a variable resistor 13 to control the frequency of operation of this electronic voltage regulator 11 basically, make the ac line voltage Vac be applied to a fluorescent lamp 12, adjust the light intensity of this fluorescent lamp 12 via variable frequency control.The advantage of the electronic voltage regulator commonly used 11 of Fig. 1 is under the condition of low-power reference potential, can make 12 work considerable times of fluorescent lamp and can not cause great infringement to this fluorescent lamp 12.If yet when these luminaires are damaged, its operating expenses will be suitable costliness.
Second kind of dimmer commonly used is phase controlled light modulator, and it is that the ac line voltage in order to driven for emitting lights equipment is carried out the shading value that phase control is adjusted luminaire.As shown in Figure 2, be serially connected with a TRIAC dimmer 20 of this tungsten lamp 21, it is by a may command electronic switch, switches behind the phase angle of an appointment in each half cycle of this ac line voltage Vac, offers the power output size of this tungsten lamp 21 in order to control.Phase controlled light modulator commonly used is at a certain section dimming scope, and for example, between 0% to 100% the power output, yet its shortcoming can't be applicable to the brightness adjustment control of electronic voltage regulator for this tungsten lamp 21.
For this reason, just need the frequency conversion dimming control system of a kind of fluorescent lamp of research and development, it comes the light intensity of light modulation on controll day accurately with simple circuit under the condition of the configuration that does not change power line (TW two wire), and the dimming scope of broadness can be provided.
(3) summary of the invention
In order will not change under the condition that existing power line is provided with, with simple circuit realize controlling single or several fluorescent lamps in the demand of light intensity grade arbitrarily, thereby invent out the frequency conversion dimming control system of fluorescent lamp.
Summary of the invention
The present invention relates to a kind of frequency conversion dimming control system of fluorescent lamp.It has a voltage regulator, but the output voltage of this voltage regulator is a modulation, as a power supply unit or a transformer, in order to convert an input direct voltage or an ac line voltage to a bus bar voltage, wherein a reference potential of this bus bar voltage is a predetermined ratio of this input direct voltage or this ac line voltage, for example 10% of this input voltage, an and pressurizer, in order to drive this fluorescent lamp, this pressurizer is the variation of surveying this bus bar voltage, and according to the variation of a frequency of an inverter of the variation of this bus bar voltage or this stabilizer, a power that offers this fluorescent lamp with adjusting is exported, in order to control a light intensity of this fluorescent lamp.
According to conception of the present invention, a kind of frequency conversion dimming control system of fluorescent lamp, it comprises: but one have the voltage regulator of modulation output, in order to an input voltage is converted to a bus bar voltage, wherein a reference potential of this bus bar voltage is a reference potential of this input voltage of a predetermined ratio; An and voltage regulator circuit, in order to driving this fluorescent lamp, it is the variation of surveying this bus bar voltage, and according to this variation of this bus bar voltage, a frequency change that forms this voltage regulator circuit offers an electric current of this fluorescent lamp with adjusting, in order to control a light intensity of this fluorescent lamp.
According to above-mentioned conception, wherein this input voltage is a direct current voltage or an ac line voltage.
According to above-mentioned conception, wherein this voltage regulator is one of following elements: a power supply unit and a transformer.
According to above-mentioned conception, wherein this predetermined ratio is 10%.
According to above-mentioned conception, wherein this stabilizer circuit comprises: a rectifier, in order to this bus bar voltage of rectification; One electric pressure converter in order to surveying the variation of this bus bar voltage, and amplifies the variation of bus bar voltage and produces a light modulation signal; And a control integrated circuit, in order to provide a power output with control to this fluorescent lamp according to this light modulation signal.
According to above-mentioned conception, wherein this rectifier is the bridge circuit that four rectifier diodes are formed.
According to above-mentioned conception, wherein this electric pressure converter is made up of an operational amplifier.
According to above-mentioned conception, this frequency conversion dimming control system also comprises an inverter of being made up of a switch at least, it is to be subjected to this control integrated circuit to control and be serially connected with between this rectifier and this fluorescent lamp, adjusts an electric current that offers this fluorescent lamp in order to change the one frequency.
According to above-mentioned conception, this frequency conversion dimming control system also comprises an inductance element and is serially connected with between this inverter and this fluorescent lamp, in order to when the switch in the inverter cuts out from this inverter received energy, and provide energy to this fluorescent lamp.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the circuit block diagram of the dimming control system of electronic voltage regulator.
Fig. 2 is the circuit block diagram of the dimming control system of phase controlled light modulator.
Fig. 3 is the calcspar of the fluorescent lamp dimming control system of preferred embodiment of the present invention.
Fig. 4 is the calcspar of the voltage regulator circuit in the fluorescent lamp dimming control system of the present invention.
(5) embodiment
Shown in Figure 3, fluorescent lamp frequency conversion dimming control system of the present invention, in order to control light intensities single or several fluorescent lamps 12, it comprises a voltage regulator 31, and it can be a power supply unit or a transformer, and a voltage regulator circuit 32.This voltage regulator 31 is accepted an ac line voltage Vac, but and provides the output voltage of a modulation.In a preferred embodiment of the present invention, this voltage regulator 31 produces a bus bar voltage Vbus with predetermined ratio of input AC line voltage Vac amplitude, for example 10% of this input AC line voltage Vac amplitude reference potential that equals bus bar voltage Vbus.This bus bar voltage Vbus provides to this voltage regulator circuit 32, decides the power output size that provides to this fluorescent lamp 12 and this voltage regulator circuit 32 is variations according to this bus bar voltage Vbus, in order to control the light intensity of this fluorescent lamp 12.
Circuit structure and method of operation about this voltage regulator circuit 32 then can obtain further instruction by Fig. 4.In Fig. 4, comprise a rectifier 34 according to an embodiment of voltage regulator circuit of the present invention, it is the bridge circuit that four rectifier diodes are formed, in order to this bus bar voltage Vbus is carried out rectification.Voltage regulator circuit of the present invention also comprises an electric pressure converter 35, it is made up of the preferably an operational amplifier, it act as a light modulation signal generator to survey the variation of this bus bar voltage Vbus, and the variation of this bus bar voltage Vbus amplified and produce a light modulation signal Vset with provide to a pressurizer control integrated circuit 37, one inverters 36 by at least by one for example mos field effect transistor switch 361 formed.The On/Off operation of this mos field effect transistor switch 361 is controlled by this pressurizer control integrated circuit 37.This pressurizer control integrated circuit 37 is a MOS driver, itself still need and want a microcontroller (not shown) to provide two controlling signal to start the controlled function of itself, and a power supply unit (also not showing) provides its work required power supply.When this pressurizer control sets adult circuit 37 receives the light modulation signal Vset of the variation of representing bus bar voltage, it can offer the power output size of this fluorescent lamp 12 according to the value of this light modulation signal Vset to control the operation of this mos field effect transistor switch 361 with restriction.On/Off operation via this mos field effect transistor switch 361, this inductance element 38 just can be when mos field effect transistor switch 361 cuts out storage power, and when this mos field effect transistor switch 361 is opened, energy is provided to this fluorescent lamp 12, to drive this fluorescent lamp 12.Therefore, this pressurizer control integrated circuit 37 can be according to the value of this light modulation signal Vset, that is the variation of this bus bar voltage Vbus is with the switching frequency of control mos field effect transistor switch 361, and then control exports the power output or the energy of this fluorescent lamp 12 to.According to another possibility of the present invention controll day light modulation 12 light intensity method, it is principle based on the frequency of the inverter 36 that changes this voltage regulator circuit 32, in order to adjusting the size of lamp current, and then the lamp current of each fluorescent lamp maintained on the fixing quantity.
In brief, the invention provides a kind of dimming control system that is used for fluorescent lamp, it be applicable to when wanting simple and easy fluorescent start in luminous grade arbitrarily, and don't will revise being provided with of existing power line the time, with efficient and easily mode reach brightness adjustment control.Further, dimming control system of the present invention can adopt better simply circuit, and accurately regulates the light intensity of fluorescent lamp between 0% to 100% scope.Therefore enforcement of the present invention can reach one simple and easy and have a fluorescent lamp dimming control system of broad dimming scope really.
From the above mentioned; those of ordinary skill in the art will be appreciated that; above embodiment is used for illustrating the present invention; be not to be used for being limited to of the present invention; as long as in the scope of claims of the present invention, all will belong to rights protection scope of the present invention to variation, the modification of the above embodiment.
Claims (9)
1. the frequency conversion dimming control system of a fluorescent lamp is characterized in that it comprises:
But the voltage regulator of modulation output, in order to an input voltage is converted to a bus bar voltage, wherein a reference potential of this bus bar voltage is a predetermined ratio of a reference potential of this input voltage; And
One voltage regulator circuit, in order to this fluorescent lamp of power drives, this voltage regulator circuit is surveyed the variation of this bus bar voltage, and according to this variation of this bus bar voltage, a frequency change that forms this voltage regulator circuit is regulated an electric current that offers this fluorescent lamp, in order to control a light intensity of this fluorescent lamp.
2. frequency conversion dimming control system as claimed in claim 1 is characterized in that this input voltage is a direct current voltage or an ac line voltage.
3. frequency conversion dimming control system as claimed in claim 1 is characterized in that this voltage regulator is one of following elements: a power supply unit or a transformer.
4. frequency conversion dimming control system as claimed in claim 1 is characterized in that this predetermined ratio is 10%.
5. frequency conversion dimming control system as claimed in claim 1 is characterized in that this voltage regulator circuit comprises:
One rectifier is in order to this bus bar voltage of rectification;
One electric pressure converter in order to surveying the variation of this bus bar voltage, and amplifies the variation of bus bar voltage and produces a light modulation signal; And
One control integrated circuit is in order to provide a power output to this fluorescent lamp according to this light modulation signal with control.
6. frequency conversion dimming control system as claimed in claim 5 is characterized in that this rectifier is the bridge circuit that four rectifier diodes are formed.
7. frequency conversion dimming control system as claimed in claim 6 is characterized in that this electric pressure converter is formed by an operational amplifier.
8. frequency conversion dimming control system as claimed in claim 6, also comprise an inverter of forming by a switch at least, it is to be subjected to this control integrated circuit to control and be serially connected with between this rectifier and this fluorescent lamp, adjusts an electric current that offers this fluorescent lamp to change the one frequency.
9. frequency conversion dimming control system as claimed in claim 8 also comprises an inductance element and is serially connected between this inverter and this fluorescent lamp, is used to when the switch in the inverter cuts out from this inverter received energy, and provides energy to this fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021421498A CN100438716C (en) | 2002-08-22 | 2002-08-22 | Frequency-changing light-regulating control system for daylight lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021421498A CN100438716C (en) | 2002-08-22 | 2002-08-22 | Frequency-changing light-regulating control system for daylight lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1477916A CN1477916A (en) | 2004-02-25 |
| CN100438716C true CN100438716C (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021421498A Expired - Fee Related CN100438716C (en) | 2002-08-22 | 2002-08-22 | Frequency-changing light-regulating control system for daylight lamp |
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| Country | Link |
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| CN (1) | CN100438716C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505573A (en) * | 2009-02-03 | 2009-08-12 | 深圳市力诚照明电器有限公司 | Florescent lamp regulating method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137067Y (en) * | 1992-09-02 | 1993-06-23 | 林原 | Controlling device for lamp |
| CN2285953Y (en) * | 1997-01-02 | 1998-07-08 | 天津市众全成电子有限公司 | Ballast |
| CN2481112Y (en) * | 2001-05-17 | 2002-03-06 | 黄海成 | Remote control light-adjustable electronic ballast |
| CN2492995Y (en) * | 2001-07-26 | 2002-05-22 | 罗时灿 | Electronic fireworks lamp controller |
-
2002
- 2002-08-22 CN CNB021421498A patent/CN100438716C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137067Y (en) * | 1992-09-02 | 1993-06-23 | 林原 | Controlling device for lamp |
| CN2285953Y (en) * | 1997-01-02 | 1998-07-08 | 天津市众全成电子有限公司 | Ballast |
| CN2481112Y (en) * | 2001-05-17 | 2002-03-06 | 黄海成 | Remote control light-adjustable electronic ballast |
| CN2492995Y (en) * | 2001-07-26 | 2002-05-22 | 罗时灿 | Electronic fireworks lamp controller |
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| Publication number | Publication date |
|---|---|
| CN1477916A (en) | 2004-02-25 |
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Granted publication date: 20081126 Termination date: 20190822 |