CN100574551C - A method for adjusting the brightness of a fluorescent lamp using a grating wheel and a dimming electronic ballast - Google Patents
A method for adjusting the brightness of a fluorescent lamp using a grating wheel and a dimming electronic ballast Download PDFInfo
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- CN100574551C CN100574551C CNB2006100343149A CN200610034314A CN100574551C CN 100574551 C CN100574551 C CN 100574551C CN B2006100343149 A CNB2006100343149 A CN B2006100343149A CN 200610034314 A CN200610034314 A CN 200610034314A CN 100574551 C CN100574551 C CN 100574551C
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Abstract
The invention relates to the field of electronic ballasts, and discloses a fluorescent lamp brightness adjusting method and an electronic ballast capable of adjusting the brightness of a fluorescent lamp. The method for adjusting the brightness of the fluorescent lamp acquires gear information by detecting the rotation condition of the grating wheel, namely, a user adjusts the brightness of the fluorescent lamp by rotating the grating wheel. The grating wheel detecting part obtains a corresponding electric signal by detecting the rotation condition of the grating wheel, the electric signal is processed by the gear information processing part to obtain an analog voltage signal which can be identified by the fluorescent lamp dimming part, and the fluorescent lamp dimming part controls the brightness of the fluorescent lamp according to the magnitude of the analog voltage signal. The invention also discloses a dimming electronic ballast using the method. The invention uses the method of collecting the gear information by the grating wheel, etc. to replace the method of collecting the gear information by the potentiometer, thereby improving the stability and the service life of the product.
Description
Technical field
The present invention relates to the electric ballast field, be specifically related to the electric ballast of a kind of brightness of fluorescent lamp control method and scalable brightness of fluorescent lamp.
Background technology
Released electric ballast in the market with brightness control function.These electric ballasts with brightness control function adopt the special-purpose adjusting light circuit of fluorescent lamp more, realize dimming function such as integrated circuit IR2159.These dimmable electronic ballasts generally all adopt potentiometer to regulate brightness of fluorescent lamp.The carbon film of potentiometer inside is long-time mechanical wear can to occur after using, thereby potentiometer useful life generally short (life-span about 10000 turn left the right side).Mechanical wear causes loose contact easily, causes light flash.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of brightness of fluorescent lamp control method is provided and uses the electric ballast of this method, to solve the deficiencies in the prior art.
Brightness of fluorescent lamp control method of the present invention is to collect gear information by the rotation situation that detects grating wheel, and promptly the user takes turns the brightness of regulating fluorescent lamp by rotating shutter.The grating wheel test section obtains the corresponding signal of telecommunication by the rotation situation that detects grating wheel, this signal of telecommunication obtains the analog voltage signal that the adjusting brightness of fluorescent lamp part can be discerned after handle the gear information processing section, the adjusting brightness of fluorescent lamp part is according to the brightness of the size control fluorescent lamp of this analog voltage signal.
Electric ballast of the present invention, it comprises adjusting brightness of fluorescent lamp part and gear information collecting part.
Adjusting brightness of fluorescent lamp partly is used for the brightness regulation of fluorescent lamp.The same with the light adjusting circuit of present common dimming electronic ballast, this part adopts the brightness of voltage control lamp: fluorescent lamp is flow through and control the lamp current that voltage is directly proportional, or make fluorescent lamp consumption and control the power that voltage is directly proportional and realize the light modulation purpose.
The gear information collecting part is by grating wheel test section and gear information processing section.The grating wheel test section by the grating wheel assembly, be used to detect the grid displacement light-sensitive device, be used for providing the light-emitting diode of light source to constitute to light-sensitive device.The grating wheel assembly is made up of the grating wheel that an outer rim has grid, and its grid places between light-emitting diode and the light-sensitive device.
When grating wheel rotated, grid was subjected to displacement, the light signal respective change that the grid displacement receives light-sensitive device, so the light-sensitive device output signal of telecommunication relevant with the grating wheel rotation situation.The gear information processing section is handled the signal of telecommunication of light-sensitive device output and is obtained the corresponding analog voltage signal that the adjusting brightness of fluorescent lamp part can be discerned.The adjusting brightness of fluorescent lamp part is according to the brightness of the size control fluorescent lamp of the analog voltage signal of gear information processing section output.
The gear information processing section comprises single chip part and digital-to-analogue conversion part, single chip part is handled the signal of telecommunication of light-sensitive device output and is exported the brilliance control digital signal to the digital-to-analogue conversion part, and the discernible analog voltage signal of digital-to-analogue conversion part output fluorescent lamp light modulation part is to the adjusting brightness of fluorescent lamp part.
The present invention uses the method for collection gear information such as grating wheel, has replaced the method for potentiometer collection gear information, the stability and the life-span of having improved product.
Description of drawings
Fig. 1 is a circuit structure schematic diagram of the present invention;
Fig. 2 is the position relational structure schematic diagram of grating wheel assembly of the present invention and grating wheel testing circuit;
Fig. 3 is the structural representation of grating wheel of the present invention;
Fig. 4 is the circuit diagram of Application Example of the present invention;
Fig. 5 is the adjusting brightness of fluorescent lamp partial circuit figure of Application Example of the present invention.
Now the invention will be further described in conjunction with the accompanying drawings and embodiments:
Embodiment
As shown in Figure 1 to Figure 3, the present invention includes adjusting brightness of fluorescent lamp part M, digital-to-analogue conversion part A, single chip part B and gear information collecting part C.
Adjusting brightness of fluorescent lamp part M is used for the brightness regulation of fluorescent lamp.The same with the light adjusting circuit of present common dimming electronic ballast, this part adopts the brightness of voltage control lamp: fluorescent lamp is flow through and control the lamp current that voltage is directly proportional, or make fluorescent lamp consumption and control the power that voltage is directly proportional and realize the light modulation purpose.
Gear information collecting part C is used to gather gear information.As shown in Figures 2 and 3, it is made up of grating wheel assembly and grating wheel testing circuit.The grating wheel assembly is made up of the grating wheel D that roller E, roller bearing F and outer rim have grid V, and roller E is by roller bearing F and grating wheel D interlock.The grating wheel testing circuit is made up of LED and light-sensitive device KQ, and grating wheel D places between LED and the light-sensitive device KQ.During light modulation, scroll wheel E, roller E drives grating wheel D by roller bearing F and rotates, and grating wheel D will make grid V produce displacement when rotating.Because grid V places between LED and the light-sensitive device KQ, the displacement of grid V will be blocked the light of LED directive light-sensitive device KQ by phased manner.Therefore light-sensitive device KQ produces the corresponding signal of telecommunication.
Single chip part B just can learn the rotation situation of grating wheel D by the signal of handling light-sensitive device KQ generation, and is used to control the digital signal of brightness according to the rotation situation output of grating wheel D.
The digital-to-analogue conversion part A converts the brilliance control digital signal of single chip part B output to analog signal that adjusting brightness of fluorescent lamp part M can discern.
Application Example
As shown in Figure 4, L is a fluorescent lamp; M is the adjusting brightness of fluorescent lamp part; IC1 is a single-chip microcomputer, and it adopts 89C2051; IC2 is an integrated regulator, is used for providing operating voltage to IC1, and it adopts FS8841; Capacitor C 1 is used for power filter; Resistance R 2 and capacitor C 2 are used to produce analog signal; KQ is a light-sensitive device; LED is an infrarede emitting diode; R1 is the current-limiting resistance of infrarede emitting diode LED.
KQ and LED constitute the grating wheel testing circuit.Infrarede emitting diode LED detects the light source that grid moves usefulness for light-sensitive device KQ provides.The grid of grating wheel places between light-sensitive device KQ and the LED.During the rotating shutter wheel, because the grid check rail is lived the light of infrarede emitting diode LED, the mobile light generation respective change that light-sensitive device KQ is received of grid, and make light-sensitive device KQ output change the corresponding signal of telecommunication with light.Two light-sensing regions that the position is different are arranged in the light-sensitive device KQ.During the rotating shutter wheel, the position difference of two induction zones makes light-sensitive device KQ produce two groups of signals that phase place is different.
Single-chip microcomputer IC1 transmits the phase difference of two groups of signals and rotation direction and the rotational angle that number of pulses is learnt grating wheel by detecting light-sensitive device KQ, thereby collects gear information.Single-chip microcomputer IC1 uses PWM (pulse-width modulation) mode from P1 pin output monochrome information according to gear information again.The signal of P1 pin output obtains the analog voltage signal that fluorescent lamp adjusting brightness of fluorescent lamp part M can discern behind R2 and C2 integration.
Figure five is circuit diagrams of adjusting brightness of fluorescent lamp part M.This part is used integrated circuit IR2159, its working voltage control brightness of fluorescent lamp.This part also provides operating voltage for other circuit.
Claims (6)
1, a kind of method of using grating wheel to regulate brightness of fluorescent lamp, the brightness of adjusting brightness of fluorescent lamp part working voltage control fluorescent lamp, it is characterized in that: the grating wheel test section obtains the corresponding signal of telecommunication by the rotation situation that detects grating wheel, this signal of telecommunication obtains the analog voltage signal that the adjusting brightness of fluorescent lamp part can be discerned after handle the gear information processing section, the adjusting brightness of fluorescent lamp part is according to the brightness of the size control fluorescent lamp of this analog voltage signal.
2, a kind of dimming electronic ballast, comprise adjusting brightness of fluorescent lamp part and gear information collecting part, adjusting brightness of fluorescent lamp part working voltage control brightness of fluorescent lamp is characterized in that: the gear information collecting part comprises the grating wheel assembly, be used to detect the grating wheel test section of grating wheel rotation situation, be used for the gear information processing section of signal processing; When grating wheel rotates, the output signal of telecommunication relevant in grating wheel test section with the grating wheel rotation situation, the gear information processing section is handled this signal and is obtained the analog voltage signal that the adjusting brightness of fluorescent lamp part can be discerned, and the adjusting brightness of fluorescent lamp part is according to the brightness of the size control fluorescent lamp of this analog voltage signal.
3, dimming electronic ballast according to claim 2 is characterized in that: the adjusting brightness of fluorescent lamp part is according to the electric current or the power consumption of the size control fluorescent lamp of this analog voltage signal.
4, dimming electronic ballast according to claim 2 is characterized in that: described grating wheel test section by the light-sensitive device that is used to detect the grid displacement, be used for providing the light-emitting diode of light source to constitute to light-sensitive device.
5, dimming electronic ballast according to claim 4 is characterized in that: the grating wheel in the described grating wheel assembly, and its outer rim has some grids, and the grid of grating wheel places between light-emitting diode and the light-sensitive device; The displacement that light-sensitive device detects grid obtains and the corresponding pulse signal of grating wheel rotation situation.
6, dimming electronic ballast according to claim 2, it is characterized in that: described gear information processing section comprises single chip part and digital-to-analogue conversion part, single chip part is used to handle the pulse signal that light-sensitive device produces, and the output digital signal that is used to control brightness is to the digital-to-analogue conversion part, the analog voltage signal that digital-to-analogue conversion part output fluorescent lamp light modulation part can be discerned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100343149A CN100574551C (en) | 2006-03-15 | 2006-03-15 | A method for adjusting the brightness of a fluorescent lamp using a grating wheel and a dimming electronic ballast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100343149A CN100574551C (en) | 2006-03-15 | 2006-03-15 | A method for adjusting the brightness of a fluorescent lamp using a grating wheel and a dimming electronic ballast |
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| Publication Number | Publication Date |
|---|---|
| CN1867222A CN1867222A (en) | 2006-11-22 |
| CN100574551C true CN100574551C (en) | 2009-12-23 |
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| CNB2006100343149A Expired - Fee Related CN100574551C (en) | 2006-03-15 | 2006-03-15 | A method for adjusting the brightness of a fluorescent lamp using a grating wheel and a dimming electronic ballast |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110953333B (en) * | 2019-12-13 | 2021-06-29 | 河北工大科雅能源科技股份有限公司 | Gear adjustment method, system and terminal device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6242867B1 (en) * | 1997-09-18 | 2001-06-05 | Jbp Technologies Ltd. | Circuit for synchronizing the ignition of electronic ballast discharge lamps |
| CN1343439A (en) * | 1999-03-11 | 2002-04-03 | 电源电路创新公司 | Networkable power controller |
| US20040207336A1 (en) * | 2001-01-30 | 2004-10-21 | Phoenix Electric Co., Ltd | Method of initiating lighting of a discharge lamp, circuit for lighting a discharge lamp, light source device using the circuit, and optical instrument incorporating the light source device |
| CN2730075Y (en) * | 2004-09-01 | 2005-09-28 | 张嵩松 | Remote controllight regulator for fluorescent lamp |
-
2006
- 2006-03-15 CN CNB2006100343149A patent/CN100574551C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6242867B1 (en) * | 1997-09-18 | 2001-06-05 | Jbp Technologies Ltd. | Circuit for synchronizing the ignition of electronic ballast discharge lamps |
| CN1343439A (en) * | 1999-03-11 | 2002-04-03 | 电源电路创新公司 | Networkable power controller |
| US20040207336A1 (en) * | 2001-01-30 | 2004-10-21 | Phoenix Electric Co., Ltd | Method of initiating lighting of a discharge lamp, circuit for lighting a discharge lamp, light source device using the circuit, and optical instrument incorporating the light source device |
| CN2730075Y (en) * | 2004-09-01 | 2005-09-28 | 张嵩松 | Remote controllight regulator for fluorescent lamp |
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| CN1867222A (en) | 2006-11-22 |
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Granted publication date: 20091223 Termination date: 20120315 |