CN201435867Y - Infrared adjustable light electronic ballast - Google Patents
Infrared adjustable light electronic ballast Download PDFInfo
- Publication number
- CN201435867Y CN201435867Y CN2009201862791U CN200920186279U CN201435867Y CN 201435867 Y CN201435867 Y CN 201435867Y CN 2009201862791 U CN2009201862791 U CN 2009201862791U CN 200920186279 U CN200920186279 U CN 200920186279U CN 201435867 Y CN201435867 Y CN 201435867Y
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- China
- Prior art keywords
- circuit
- electronic ballast
- fluorescent lamp
- infrared
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model relates to an electronic ballast, in particular to an infrared adjustable light electronic ballast which comprises an electromagnetic interference (EMI) filter, a rectifying circuit,a power factor correction circuit, an infrared sensing control circuit, a dimming circuit, an output level circuit and a fluorescent lamp. By combining an infrared technology and a dimming technology, the infrared adjustable light electronic ballast can be applied to a dimming electronic ballast of the fluorescent lamp, so as to lead the dimming of the fluorescent lamp to be more intelligent andovercome the defect of poor intelligent degree of the existing ballast; furthermore, the electronic ballast can be taken as a lighting subsystem to be embedded into a building automatic control system, and has wide application prospect on family intelligence and large public places.
Description
Technical field
The utility model relates to a kind of infrared dimmable electronic ballast.
Background technology
Fluorescent lamp is as a member in the gaseous discharge lamp family, and its appearance has had the history of decades.Because good photoelectricity usefulness and cheap cost of manufacture, fluorescent lamp has become a kind of popular lighting source.The negative resistance charactertistic of fluorescent lamp, make must have corresponding current limiting device to match could operate as normal, this flow restricter is exactly a ballast.Fluorescent lamp the startup stage be to injure electrode most, use the fluorescent lamp of Inductive ballast, fluorescent tube of every startup is equivalent to fluorescent tube approximately and lighted continuously two hours.Therefore, frequent switch fluorescent lamp is the life-span that influences very much fluorescent lamp.Raising day by day along with the energy efficient requirement, also for fear of the frequent switch of fluorescent lamp, dimmable electronic ballast arises at the historic moment as a kind of energy-conserving product, and the intelligent degree of dimmable electronic ballast in the market is not high, also the dimmable electronic ballast that does not combine with the infrared induction technology.
The utility model content
Technical problem to be solved in the utility model provides a kind of infrared dimmable electronic ballast that infrared technique is combined with light regulating technology.
The technical scheme that the utility model adopted is:
Infrared dimmable electronic ballast comprises electromagnetic interference (EMI) filter, rectification circuit, circuit of power factor correction, infrared induction control circuit, light adjusting circuit, output-stage circuit, fluorescent lamp, wherein:
Exchanging input is connected with output-stage circuit through electromagnetic interference (EMI) filter, rectification circuit, circuit of power factor correction successively;
The infrared induction control circuit is connected with output-stage circuit through light adjusting circuit;
The output of output-stage circuit connects fluorescent lamp.
The good effect that the utility model had is: the utility model combines infrared technique with light regulating technology, be applied in the dimming electronic ballast of fluorescent lamp, make adjusting brightness of fluorescent lamp intelligent more, improved the technology content of Design of Digital Ballast, can be used as illumination subsystems and embed in the building automatic control system, wide application prospect is also arranged in home intelligence and large-scale public place simultaneously.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Embodiment
The design philosophy of infrared dimmable electronic ballast is that the infrared induction technology is applied to control dim signal by infrared signal in the intelligent dimming.When the people walked close to, infrared sensor captured human infrared signal, and this signal is transferred to light adjusting circuit, made that fluorescent lamp is complete bright state by the low-light level state-transition; When nobody the time, fluorescent lamp is in the low-light level state always.So just reduced the number of times of switch fluorescent lamp.The infrared induction technology is applied to really realize intelligent dimming in the light adjusting system of fluorescent lamp.
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, infrared dimmable electronic ballast comprises electromagnetic interference (EMI) filter 1, rectification circuit 2, circuit of power factor correction 3, infrared induction control circuit 4, light adjusting circuit 5, output-stage circuit 6, fluorescent lamp 7, wherein:
Exchanging input is connected with output-stage circuit 6 through electromagnetic interference (EMI) filter 1, rectification circuit 2, circuit of power factor correction 3 successively;
Infrared induction control circuit 4 is connected with output-stage circuit 6 through light adjusting circuit 5;
The output of output-stage circuit 6 connects fluorescent lamp 7.
Output-stage circuit is that output-stage circuit produces the pulse that two-way does not overlap to the half-bridge driven of light adjusting circuit, is used for driving the half-bridge inverter in the light adjusting circuit.
Light adjusting circuit is a dimming control signal to the feedback of output-stage circuit, this signal produces error current through dimmable electronic ballast special chip internal error amplifier, the operating frequency of control half-bridge inverter, and then pass through the brightness that the LC series resonant circuit is controlled lamp.
Introduce the function of each several part below in detail:
1, electromagnetic interference (EMI) filter
The technical measures that suppress EMI have shielding, ground connection (floating ground, single-point ground and ground network) and filtering.Wherein, filtering technique is to suppress the effective and the most most economical means of conducted interference.Because various interference are the most serious at the system interface place, so electromagnetic interface filter is placed on the porch of system power supply line.The conducted interference of AC power cord comprises differential mode noise composition and common-mode noise composition.In order to play the effect that suppresses to disturb, reduce noise, adopt the alternating current circuit electromagnetic interface filter.Electromagnetic interface filter had both suppressed common mode and differential mode interference from electrical network, guaranteed that common-mode noise and differential mode noise do not appear in secondary side.Simultaneously, it also plays attenuation to the electromagnetic interference that electric ballast self produces, and is not contaminated to guarantee electrical network.
2, rectification circuit
By rectifier bridge the alternating current of importing is carried out rectification, output DC.
3, circuit of power factor correction
Cross when low when power factor, power supply equipment is not fully utilized, and causes the huge waste of electric energy, influences the normal operation of power consumption equipment.And can in the current supply line of building, produce heat.The power factor of electric ballast is low can to limit the load of household electrical appliance, even can increase lighting expense usefulness.So circuit of power factor correction is essential.
4, infrared induction control circuit
The infrared induction control circuit is applied in the middle of the dimmable electronic ballast, and is connected, realize real intelligent stepless dimming with light adjusting circuit.
5, light adjusting circuit
Input infrared induction control signal is input to the current potential of dimmable electronic ballast special chip according to this signal scalable, and then controls the brightness of fluorescent lamp.
6, output-stage circuit
What adopt is to be the voltage input half-bridge inverter of load with the fluorescent lamp, and the direct voltage of its input is the output voltage of circuit of power factor correction.Wherein the frequency of dimmable electronic ballast special chip driven MOS FET pipe about with 40kHz alternately cut-off, and like this, just produced high frequency square wave at the half-bridge circuit mid point.Fluorescent lamp is in off state before startup, choke induction and startup electric capacity, capacitance have just been formed the LC series resonant circuit like this.
The voltage of dimmable electronic ballast special chip circuit VDC end and the VCC end directly rectifier bridge output voltage from circuit of power factor correction is obtained.The light modulation of fluorescent lamp is adopted the method for phase control.When preheating and trigger mode, circuit LC high frequency series resonance, the electric current and voltage phase difference of resonance point is ± 90 °, operating frequency is a little more than resonance frequency.Light-modulating mode, inductance L in the circuit and RC series connection in parallel, phase difference is little when high-power, and phase place is inverted during small-power.So during the operational mode after the triggering, input current and half-bridge output voltage phase difference are to change between 0 °-90 °, wherein, the corresponding maximum power of zero phase difference.The output of hot so outer induction control circuit has potential change, and the phase place of load current will Back Up, thereby power output changes, and has realized the light modulation of dimmable electronic ballast special chip circuit to brightness of fluorescent lamp.
7, fluorescent lamp (load circuit)
Adopt general fluorescent lamp as load.
Claims (1)
1, infrared dimmable electronic ballast, comprise electromagnetic interference (EMI) filter (1), rectification circuit (2), circuit of power factor correction (3), infrared induction control circuit (4), light adjusting circuit (5), output-stage circuit (6), fluorescent lamp (7), it is characterized in that:
Exchange input and pass through electromagnetic interference (EMI) filter (1), rectification circuit (2), circuit of power factor correction (3) successively and be connected with output-stage circuit (6),
Infrared induction control circuit (4) is connected with output-stage circuit (6) through light adjusting circuit (5),
The output of output-stage circuit (6) connects fluorescent lamp (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201862791U CN201435867Y (en) | 2009-07-09 | 2009-07-09 | Infrared adjustable light electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201862791U CN201435867Y (en) | 2009-07-09 | 2009-07-09 | Infrared adjustable light electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435867Y true CN201435867Y (en) | 2010-03-31 |
Family
ID=42054680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201862791U Expired - Fee Related CN201435867Y (en) | 2009-07-09 | 2009-07-09 | Infrared adjustable light electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435867Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413626A (en) * | 2010-09-21 | 2012-04-11 | 合肥三川自控工程有限责任公司 | Induction-type fluorescent lamp |
| CN102448236A (en) * | 2010-10-14 | 2012-05-09 | 翁琳松 | Dimming and light emitting system of fluorescent lamp and sensing device of dimming and light emitting system |
-
2009
- 2009-07-09 CN CN2009201862791U patent/CN201435867Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413626A (en) * | 2010-09-21 | 2012-04-11 | 合肥三川自控工程有限责任公司 | Induction-type fluorescent lamp |
| CN102448236A (en) * | 2010-10-14 | 2012-05-09 | 翁琳松 | Dimming and light emitting system of fluorescent lamp and sensing device of dimming and light emitting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |