CN104105324A - DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group - Google Patents
DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group Download PDFInfo
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- CN104105324A CN104105324A CN201310160086.XA CN201310160086A CN104105324A CN 104105324 A CN104105324 A CN 104105324A CN 201310160086 A CN201310160086 A CN 201310160086A CN 104105324 A CN104105324 A CN 104105324A
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- self
- inverter
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Abstract
The invention relates to the technical field of electric light source and specifically discloses a DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group. A self-oscillation chip A and a push-pull inverter A' output power transformer T1 and a self-oscillation chip B and a push-pull inverter B' output power transformer T2 are fed into an addition coupler TB1. A self-oscillation chip C and a push-pull inverter C' output power transformer T3 and a self-oscillation chip D and a push-pull inverter D' output power transformer T4 are fed into an addition coupler TB2. The addition coupler TB1 and the addition coupler TB2 are fed into an addition coupler TB3 for power synthesis, and the synthesized power further undergoes voltage boost and is then fed into a lamp tube circuit for turning the fluorescent lamp group on. Signals of a reference crystal oscillator are injected into the four self-oscillation chips through a frequency divider for phase locking and output power stabilizing, so that luminance declination caused by power unbalance resulted from oscillation frequency change since temperature rise of a device is too high is avoided. Signals of a lamp tube abnormal current detector are accessed to the SD ends of the four self-oscillation chips for power tube protection. The fluorescent lamp group is suitable for DC low-voltage power supply fluorescent lamp illumination occasions.
Description
Technical field
The present invention relates to electric source lighting technical field, specifically a kind of DC low voltage power supply four is injected the synthetic fluorescent lamp group of lock power.
Background technology
Prior art conventionally with LC or RC oscillator as fluorescent lamp group electric light source, the frequency of oscillation of generation is subject to temperature change stability, and poor to affect power stable not, causes light intensity to decline, although simple in structure, cost is low.But obtain high-power illumination and certainly will increase device current, especially DC low-voltage power supply, increase power output and can only rely on current work, the too high frequency of oscillation that causes of hunting power pipe power consumption sharp increase temperature rise changes, and result can make light unbalance with frequency change power magnitude.Meanwhile, large electric current declines by the high magnetic permeability of coil temperature rise, the little impedance trend zero of saturation inductors quantitative change, light fixture operating time and temperature rise direct ratio, device aging is accelerated in temperature rise, and gently the unstable brightness of lamp luminescence declines, heavy burn out device reduction of service life.Stack inverter power drags high-power lamp, solves the restriction of device power capacity.But the synthetic oscillating voltage phase place of power should be consistent, unbalanced to overcome non-linear intermodulation power.
Summary of the invention
The object of this invention is to provide DC low voltage power supply power supply, vibrate a kind of DC low voltage power supply four of high frequency stabilization Phase synchronization high-power illumination of inversion is injected the synthetic fluorescent lamp group of lock power.
The technology of the present invention solution is: comprise DC low voltage power supply, fluorescent tube group, benchmark crystal oscillator, frequency divider, self-oscillation chip A, self-oscillation chip B, self-oscillation chip C, self-oscillation chip D, recommend inverter A ', recommend inverter B ', recommend inverter C ', recommend inverter D ', be added coupler TB
1, be added coupler TB
2, be added coupler TB
3, tube circuit, abnormal condition of lamp tube current detector, wherein, benchmark crystal oscillator is by quartz-crystal resonator, six inverters and resistance, electric capacity forms, by an inverter input and output two ends cross-over connection biasing resistor, and connect ground capacity, simultaneously, the quartz-crystal resonator of cross-over connection series connection trimmer, by another inverter access benchmark crystal oscillator signal, through frequency divider and connect four inverters, self-oscillation chip includes oscillator, recommend inverse changing driving circuit, lamp failure closing controller SD, output forms and recommends inverter A ' by two high-power MOS field effect transistor through recommending inverse changing driving circuit connection respectively, recommend inverter B ', recommend inverter C ', recommend inverter D ', self-oscillation chip A recommends inverter A ' output power transformer T
1recommend inverter B ' output power transformer T with self-oscillation chip B
2feed-in is added coupler TB
1, self-oscillation chip C recommends inverter C ' output power transformer T
3recommend inverter D ' output power transformer T with self-oscillation chip D
4feed-in is added coupler TB
2, be added coupler TB
1with addition coupler TB
2feed-in is added coupler TB
3power synthesizes, boosting connects tube circuit coupling fluorescent tube group starter, and the frequency divider of access benchmark crystal oscillator signal four inverter output signals that connect are injected four self-oscillation chip C
tend locking phase, four self-oscillation chip SD end protection inverter power tube of abnormal condition of lamp tube current detector signal access, DC low voltage power supply access benchmark crystal oscillator, frequency divider, four self-oscillation chips, four recommend inverter power supply end,
Wherein, tube circuit is by fluorescent tube DG
1～none end is through resonant inductance LB
1～n, capacitor C B
1～naccess is added coupler TB
3inductance TB3L
2, the other end detects mutual inductance magnet ring ground connection through lamp current, and lamp tube ends also meets coupling starting capacitor CU
1～n, inductance L S
1meet diode VD
1detection, capacitor C
8, resistance R
13filtering is through resistance R
8, R
9dividing potential drop, a pipe Q
3trigger four self-oscillation chip lamp failure protection control end SD, failure of oscillation turn-offs and recommends inverter power metal-oxide-semiconductor field effect transistor fast;
The present invention produces good effect: solving DC low-voltage power supply four, to push away the inversion high frequency stabilization Phase synchronization power that vibrates synthetic, reach single self-oscillation chip and recommend the high-power illumination that inversion is difficult to obtain, avoid device temperature rise frequency of oscillation to change power imbalances, improve lamp lighting quality, steady light increases the service life, and saves light fixture expense.
Accompanying drawing explanation
Fig. 1 technical solution of the present invention theory diagram
Fig. 2 benchmark crystal oscillating circuit
Fig. 3 self-oscillation push-pull inverter circuit
Fig. 4 DC low voltage power supply four is injected the synthetic fluorescent lamp group circuit of lock power
Embodiment
With reference to Fig. 1,2,3,4, (Fig. 3 be take self-oscillation chip A and is recommended inverter A ' circuit as example, remaining circuit is identical), the specific embodiment of the invention and embodiment: comprise DC low voltage power supply 12, fluorescent tube group 9, benchmark crystal oscillator 11, frequency divider 10, self-oscillation chip A1, self-oscillation chip B2, self-oscillation chip C3, self-oscillation chip D4, recommend inverter A ', recommend inverter B ', recommend inverter C ', recommend inverter D ', be added coupler TB
15, be added coupler TB
26, be added coupler TB
37, tube circuit 8, abnormal condition of lamp tube current detector 13, wherein, benchmark crystal oscillator 11 is comprised of quartz-crystal resonator JT, six inverters and resistance, electric capacity, by an inverter ic
1-1input and output two ends cross-over connection biasing resistor R
1, and meet ground capacity C
1, C
2, meanwhile, cross-over connection series connection trimming capacitor C
0quartz-crystal resonator JT, by another inverter ic
1-2access benchmark crystal oscillator 11 signals, through frequency divider 10 frequency division ÷ N and connect four inverter ics
1-3, IC
1-4, IC
1-5, IC
1-6, self-oscillation chip IC
3iR2156 includes oscillator, recommends inverse changing driving circuit, lamp failure closing controller SD, and output connects by two high-power MOS field effect transistor Q through recommending inverse changing driving circuit respectively
1, Q
2formation is recommended inverter A ', recommends inverter B ', recommends inverter C ', is recommended inverter D ', and self-oscillation chip A1 recommends inverter A ' output power transformer T
1recommend inverter B ' output power transformer T with self-oscillation chip B2
2feed-in is added coupler TB
15, self-oscillation chip C3 recommends inverter C ' output power transformer T
3recommend inverter D ' output power transformer T with self-oscillation chip D4
4feed-in is added coupler TB
26, be added coupler TB
15 be added coupler TB
26 feed-ins are added coupler TB
37 power synthesize, boosting meets tube circuit 8 coupling fluorescent tube group 9 starters, the frequency divider 10 of access benchmark crystal oscillator 11 signals four inverter output signal f that connect
0-1, f
0-2, f
0-3, f
0-4inject the C of four self-oscillation chip A1, B2, C3, D4
tend locking phase, abnormal condition of lamp tube current detector 13 signals connect the SD end of four self-oscillation chip A1, B2, C3, D4, fast failure of oscillation turn-offs and recommends inverter power metal-oxide-semiconductor field effect transistor, and DC low voltage power supply 12 access benchmark crystal oscillators 11, frequency divider 10, four self-oscillation chip A1, B2, C3, D4 and four recommend inverter A ', B ', C ', D ' power end.
IC
3pin mark function: V
cCpower end, C
tmeet oscillator timing capacitor C
4, R
tmeet oscillator timing resistor R
2, HO drives Q
1, LO drives Q
2, CS current detecting, SD lamp failure is closed vibration protection and is controlled, COM ground connection.
Self-oscillation chip IC
3by resistance R
7step-down, capacitor C
7filtering supply power end V
cCproduce vibration, through HO, LO, drive and recommend inverter, high-power MOS tube Q
1, Q
2conducting in turn, cut-off half cycle, transformer T
1mid point is through inductance L F
1capacitor C
6decoupling filtering meets DC low voltage power supply+V.
Be added coupler TB
1, TB
2by two, recommend power output stack respectively, be added coupler TB
3by four, recommend power output two overlapping of order summations and deliver to lamp load, four to recommend inverter input voltage, frequency, phase place and load identical, equalizing resistance R
10, R
11, R
12idle.When certain inverter breaks down, there is no power stage, corresponding circuits equalizing resistance absorbs pairing inverter power, though whole lamp power reduces, can keep illumination, improves reliability.
The synthetic large-power lamp that drags of power, dilatation flexibly, reliably, still, requires self-oscillation chip oscillate voltage-phase consistent, unbalanced to eliminate non-linear intermodulation power, obtains stable power output.For this reason, introduce injection phase-locking and solve power synthesis phase simultaneous techniques.Injection phase-locking is need not be voltage-controlled tuning, phase discriminator, loop filter, and circuit structure is simple, superior performance, and fringe cost is low.Injection phase-locking there is not difference with looped phase locking in essence, is suitable for the synthetic large-power lamp stable oscillation stationary vibration frequency plot of power synchronous, and stable power output is avoided the too high power imbalances of device temperature rise, and steady light increases the service life.
Benchmark crystal oscillator quartz resonator quality factor are high, and frequency is subject to variations in temperature minimum, and highly stable to make benchmark accurate.Reference signal is injected self-oscillation chip C through frequency division
tend locking phase.Do not inject reference signal self-oscillation chip RC oscillator and produce free oscillation frequency, inject reference signal RC oscillating voltage and its vector synthetic, by self-oscillation chip additive mixing locking phase, oscillator signal and injection reference signal only have a fixing phase difference.Synchronization bandwidth and injecting power direct ratio, with RC oscillator loaded Q inverse ratio, the input due to reference signal injection RC oscillator, gains high, small-power locking.
Owing to injecting the integral multiple that reference frequency is locking frequency of oscillation, or frequency of oscillation is the integral multiple of reference frequency, and reference signal frequency division injects the high wen-frequency characteristics quartz resonator of apolegamy upper frequency, is easy to lock tens of to hundreds of kilo hertzs of LC or RC oscillator.Frequency divider IC
2binary system or decimal system counting frequency division.
Lamp abnormality detection is by lamp current mutual inductance magnet ring inductance L S
1induced potential diode VD
1detection, capacitor C
8, resistance R
13filtering, through SD ' resistance R
8, R
9dividing potential drop, a pipe Q
3trigger self-oscillation chip SD end, when trigger voltage high level signal, failure of oscillation turn-offs and recommends inverter power pipe fast rapidly, in order to avoid impaired.The abnormal power tube large-current electric resistance of lamp R
6pressure drop is through resistance R
4, capacitor C
5open self-oscillation chip current and detect CS end duplicate protection inverter power tube.
Embodiment DC low voltage power supply 36V, four recommend inverter current 6A, drive 5 36W fluorescent lamp group pipe DG
1～DG
n, efficiency 83%, inverter current is little, and device power consumption is low, need not device radiation device, long-time houselights is stable.Be applicable to the fluorescent lighting occasion of DC low-voltage power supply.
Claims (2)
1. a DC low voltage power supply four is injected the synthetic fluorescent lamp group of lock power, comprise DC low voltage power supply, fluorescent tube group, it is characterized in that: also comprise benchmark crystal oscillator, frequency divider, self-oscillation chip A, self-oscillation chip B, self-oscillation chip C, self-oscillation chip D, recommend inverter A ', recommend inverter B ', recommend inverter C ', recommend inverter D ', be added coupler TB
1, be added coupler TB
2, be added coupler TB
3, tube circuit, abnormal condition of lamp tube current detector, wherein, benchmark crystal oscillator is by quartz-crystal resonator, six inverters and resistance, electric capacity forms, by an inverter input and output two ends cross-over connection biasing resistor, and connect ground capacity, simultaneously, the quartz-crystal resonator of cross-over connection series connection trimmer, by another inverter access benchmark crystal oscillator signal, through frequency divider and connect four inverters, self-oscillation chip includes oscillator, recommend inverse changing driving circuit, lamp failure closing controller SD, output forms and recommends inverter A ' by two high-power MOS field effect transistor through recommending inverse changing driving circuit connection respectively, recommend inverter B ', recommend inverter ' C, recommend inverter D ', self-oscillation chip A recommends inverter A ' output power transformer T
1recommend inverter B ' output power transformer T with self-oscillation chip B
2feed-in is added coupler TB
1, self-oscillation chip C recommends inverter C ' output power transformer T
3recommend inverter D ' output power transformer T with self-oscillation chip D
4feed-in is added coupler TB
2, be added coupler TB
1with addition coupler TB
2feed-in is added coupler TB
3power synthesizes, boosting connects tube circuit coupling fluorescent tube group starter, and the frequency divider of access benchmark crystal oscillator signal four inverter output signals that connect are injected four self-oscillation chip C
tend locking phase, four self-oscillation chip SD end protection inverter power tube of abnormal condition of lamp tube current detector signal access, DC low voltage power supply access benchmark crystal oscillator, frequency divider, four self-oscillation chips, four power ends of recommending inverter.
2. DC low voltage power supply four according to claim 1 is injected the synthetic fluorescent lamp group of lock power, it is characterized in that: tube circuit is by fluorescent tube DG
1～none end is through resonant inductance LB
1～n, capacitor C B
1～naccess is added coupler TB
3inductance TB3L
2, the other end detects mutual inductance magnet ring ground connection through lamp current, and lamp tube ends also meets coupling starting capacitor CU
1～n, inductance L S
1meet diode VD
1detection, capacitor C
8, resistance R
13filtering is through resistance R
8, R
9dividing potential drop, a pipe Q
3trigger two self-oscillation chip lamp failure protection control end SD, failure of oscillation turn-offs and recommends inverter power metal-oxide-semiconductor field effect transistor fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160086.XA CN104105324A (en) | 2013-04-15 | 2013-04-15 | DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160086.XA CN104105324A (en) | 2013-04-15 | 2013-04-15 | DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group |
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|---|---|
| CN104105324A true CN104105324A (en) | 2014-10-15 |
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|---|---|---|---|
| CN201310160086.XA Pending CN104105324A (en) | 2013-04-15 | 2013-04-15 | DC low-voltage power supply four-push injection phase-locking power synthesis fluorescent lamp group |
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Citations (5)
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| CN1675841A (en) * | 2002-08-12 | 2005-09-28 | Enq半导体有限公司 | Method and device for injection locking of voltage controlled oscillators using direct digital tuning |
| CN1735306A (en) * | 2004-07-07 | 2006-02-15 | 奥斯兰姆施尔凡尼亚公司 | Resonant inverter including feed back circuit having phase compensator and controller |
| US20070063779A1 (en) * | 2005-09-16 | 2007-03-22 | Fujitsu Limited | Clock signal generating and distributing apparatus |
| CN201976319U (en) * | 2011-04-03 | 2011-09-14 | 张妙娟 | Power synthesis fluorescent lamp with direct-current and low-voltage power supply and four push-pull oscillators |
| CN203181392U (en) * | 2013-04-15 | 2013-09-04 | 张妙娟 | Direct-current low-voltage power supply four-push injection-locking power synthesis fluorescent lamp group |
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2013
- 2013-04-15 CN CN201310160086.XA patent/CN104105324A/en active Pending
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|---|---|---|---|---|
| CN1675841A (en) * | 2002-08-12 | 2005-09-28 | Enq半导体有限公司 | Method and device for injection locking of voltage controlled oscillators using direct digital tuning |
| CN1735306A (en) * | 2004-07-07 | 2006-02-15 | 奥斯兰姆施尔凡尼亚公司 | Resonant inverter including feed back circuit having phase compensator and controller |
| US20070063779A1 (en) * | 2005-09-16 | 2007-03-22 | Fujitsu Limited | Clock signal generating and distributing apparatus |
| CN201976319U (en) * | 2011-04-03 | 2011-09-14 | 张妙娟 | Power synthesis fluorescent lamp with direct-current and low-voltage power supply and four push-pull oscillators |
| CN203181392U (en) * | 2013-04-15 | 2013-09-04 | 张妙娟 | Direct-current low-voltage power supply four-push injection-locking power synthesis fluorescent lamp group |
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Application publication date: 20141015 |
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