CN102655707A - Dimming control device for energy-saving lamp - Google Patents
Dimming control device for energy-saving lamp Download PDFInfo
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- CN102655707A CN102655707A CN2012100635481A CN201210063548A CN102655707A CN 102655707 A CN102655707 A CN 102655707A CN 2012100635481 A CN2012100635481 A CN 2012100635481A CN 201210063548 A CN201210063548 A CN 201210063548A CN 102655707 A CN102655707 A CN 102655707A
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Abstract
The invention discloses a dimming control device for an energy-saving lamp. The dimming control device is mainly designed based on a dimming control chip of the model being PT5623, and comprises an AC/DC (alternating-current/direct-current) converting unit connected with a power supplying unit and a half-bridge driving unit respectively, wherein the power supplying unit is connected with the half-bridge driving unit and a control unit; the control unit is respectively connected with a mains supply detection unit, a lamp current and lamp open circuit detection unit and a half-bridge driving unit; the lamp current and lamp open circuit detection unit is connected with a fluorescent lamp load; the fluorescent lamp load is connected with a resonance oscillation electric unit; and an oscillation electric unit is connected with the half-bridge driving unit. The energy-saving lamp dimming control device has the advantages that the circuit is simple, the cost is low, a power supplying circuit of the control chip is simple and stable, and the power consumption is extremely low; the lamp current is in degeneration control, and backs up low-light level ignition; the energy-saving lamp dimming control device has a lamp filament preheating function and a lamp open circuit protection function, and prolongs the service life of a lamp tube obviously; and the light dimming can be completed as long as a switch is operated once again, and the energy-saving lamp dimming control device is convenient to use.
Description
Technical field
The present invention relates to a kind of light adjusting and controlling device, especially relate to a kind of fluorescent lamp or electricity-saving lamp light adjusting controller.
Background technology
Traditional light irradiation apparatus such as electric lights such as bulb or fluorescent tube; The light source of constant brightness all can only be provided when lighting; For the environment that specific the time, does not need high brightness too; Electric light provides too much brightness both not cause waste of electric energy, and electric light can not cooperate environmental demand to change brightness again, reaches optimum electric light brightness.
Naturally, the electric light of tunable optical formulas such as some fluorescent lamps (electricity-saving lamp) or desk lamp with dimmer switch arises at the historic moment, and as far as incandescent lamp, the principle of light modulation promptly is to regulate through the knob of controlling controller, changes the brightness that the size that flows through the tungsten filament electric current changes bulb; But for fluorescent lamp (electricity-saving lamp), because fluorescent lamp is not next luminous through electric current with tungsten filament, so it can not regulate brightness through the method identical with bulb; Generally adopt the number of times through switch to switch brightness degree, the number of times of switch too much makes the user produce puzzlement easily, and the brightness of fluorescent lamp change is the change of carrying out order property through the number of times of switch usually; As turning on light for the first time is the brightest brightness; Reopen once at once after shutting, bright brightness in can switching to, switch once can switch to low bright brightness again; If the user desires to adjust to low bright brightness at the beginning; Must stand then that twice on switch is above to switch the burden that causes eyes with fluorescent lamp flicker and brightness, and the flicker of switching repeatedly also causes simultaneously waste of electric energy, also reduced the life-span of fluorescent tube simultaneously; Even if adjust to middle brightness, also need stand flicker at least once, use very inconvenient.
And fluorescent lamp (electricity-saving lamp) does not have warm, and is big through the filament starting current, causes filament shortening in useful life; Do not have the fluorescent lamp tube defencive function of dying of old age, when lamp tube life end, can not stop to flash, the puzzlement user.
Summary of the invention
The objective of the invention is to solve the problems referred to above that fluorescent lamp (electricity-saving lamp) light modulation exists; Provide pointedly a kind of simple in structure, cost is low, regulate that brightness is convenient, the adjusting control circuit of working stability; The model that mainly is based on of this adjusting control circuit is that the brightness adjustment control chip of PT5623 designs, and concrete technical scheme is following:
A kind of electricity-saving lamp light adjusting controller, it comprises, the AC/DC converting unit is with the DC power supply that is converted into of electric main; The civil power detecting unit is sampled to city's value of electrical signals and frequency, output sampled value and mains frequency; Lamp current and lamp open circuit detecting unit, the current signal and the voltage signal of the load of detection fluorescent lamp feed back to control unit; Control unit receives city's signal of telecommunication and lamp current signal, lamp voltage signal, and the signal that receives is handled, the output control signal corresponding; Half bridge drive unit receives the control signal that control unit is exported, power output; The resonant circuit unit is coupled to half bridge drive unit, driven by the half bridge drive unit power output, and couples power to the fluorescent lamp load; Power supply unit starts power supply and working power for control unit provides.The interrupt signal of civil power detection mains supply is for control unit provides the actuating signal of switch, as the brightness adjustment control foundation; Control unit output control signal corresponding comprises the control signal of keeping degree of lightening after linearity light adjusting signal and light modulation action are accomplished, and corresponding, these signals are received by half bridge drive unit.
As further specifying of such scheme; Said half bridge drive unit is in series by two switching tubes; One of one of them switching tube is connected to the anode of DC power supply; One of a switching tube is connected to the negative terminal of power supply, and two control end of switching tube are connected to control corresponding unit controls signal output part through resistance respectively, and the series connection point of contact of two switching tubes is the power output end.
Preferably, said switching tube is a metal-oxide-semiconductor.
Said control unit is that control chip and peripheral some resistance thereof and the electric capacity of PT5623 is formed by model.Control chip PT5623 is a electric ballast special integrated circuit, is applicable to the linearity light adjusting of regular tap.It adopts the control of lamp current negative feedback closed loop, and warm-up time able to programme and pre-heat frequency are provided, and has the lamp tube life end defencive function; Its starting current is little, and accurate oscillation frequency is arranged, integrated 650V flash half-bridge driven; Use simply, the pin function of control chip PT5623 is as shown in the table:
| Pin name | Explanation | The pin sequence number |
| VDD | The power end of chip | 1 |
| GND | Chip system ground | 2 |
| VREG1 | The chip stand-by power supply, the decision turn off delay time time | 3 |
| RF | Reference current is set end | 4 |
| RP | Pre-heat frequency is set |
5 |
| LS | End is set in the initial brightness of chip (minimum brightness) | 6 |
| CP | End is set in warm-up time, frequency sweep igniting | 7 |
| IL | The lamp current end of probe | 8 |
| CT | The oscillator external capacitor, the frequency of decision oscillator | 9 |
| RT | The oscillator outer meeting resistance, the frequency of decision oscillator | 10 |
| EOL | The lamp test side of dying of old age | 11 |
| ACD | AC input end of probe (surveying city's signal of telecommunication) | 12 |
| LO | Low limit MOS tube grid drives | 13 |
| VS | Half- |
14 |
| HO | High side power MOS tube grid drives | 15 |
| VB | Half-bridge flash drive circuit suspended power supply | 16 |
After control chip PT5623 starts, get into preheating mode, PT5623 adopts fixed preheating frequently, and warm-up time, pre-heat frequency was by RP terminal voltage and RT end outer meeting resistance and the decision of CT end external capacitor by CP end external capacitor and the decision of RP terminal voltage size.After lamp was normally lighted, lamp had two kinds of mode of operations: a kind of is to get into light-modulating mode, arrive maximum brightness and steady operation then, a kind of be direct steady operation in a certain constant brightness, lamp steady operation situation afterwards.Because PT5623 is the mode light modulation that utilizes frequency modulation, the lamp operating frequency is different under the different brightness.Guarantee that lamp is under various brightness; Work that can both be stable; Light flash does not appear; CP pin external capacitor separated into two parts: a part be CP with ground between directly be connected an electric capacity, another part is the series network that adds resistance and electric capacity between CP and the ground, the value of suitably regulating resistance and electric capacity can make PT5623 can steady operation in various brightness.
Said power supply unit is made up of starting resistance, charge pump, pressurizer and dual stage filter; Starting resistance is connected to the anode of DC power supply; Charge pump is by two diodes and the current-limiting resistance that is connected on two diode tie points by head and the tail series connection; And the electric capacity of this current-limiting resistance series connection, this electric capacity one end is connected with two switching tube series connection contacts of said half bridge drive unit; The anode of one of them diode connects public ground; The negative electrode of another diode is connected with starting resistance; The tie point place is connected to filter capacitor and current-limiting resistance, and this current-limiting resistance is in series with the pressurizer that is connected with ground, and these pressurizer two ends are parallel with another filter capacitor; Two filter capacitors constitute dual stage filter, and the output of this pressurizer is connected to the vdd terminal of control chip PT5623.After powering on, starting resistance connects the VDD of DC power supply and control chip PT5623, is control chip PT5623 power supply.The quiescent current of control chip PT5623 before starting is less, and its representative value 260uA can make starting resistance get higher value, reduces power consumption.After VDD voltage reached the startup value, control chip PT5623 started working, and drove half bridge drive unit power MOS pipe switch, and operating current at this moment is bigger, about 1.5mA-4mA.At this moment, control chip mainly by the charge pump power supply, is guaranteed the control chip working stability, and has been reduced its power consumption.Be operated in hard switching state or charge pump capacitor design when excessive at half-bridge, voltage-stabiliser tube DZ has a lot of high-frequency currents, influences the stability of VDD voltage.For this reason, except that the one-level filter of original charge pump current-limiting resistance and filter capacitor formation, increase one-level RC filter and stablize VDD voltage.
Order is in series with bootstrap diode, current-limiting resistance, electric capacity between the VDD pin of said control chip PT5623 and VS pin, and the VB pin of control chip PT5623 is connected with the capacitances in series contact with current-limiting resistance.Control chip PT5623 gives floating power supply VBS power supply through bootstrap diode from VDD, and when low limit metal-oxide-semiconductor was opened, VS was idiostatic with ground.At this moment, to being connected the electric capacity charging between VB and the VS, the earth potential of each VS, electric capacity all can be recharged the flash circuit through the bootstrap diode between VDD and the VB.Therefore only under the situation of operate as normal, VBS voltage just can be set up.Have no progeny when low limit metal-oxide-semiconductor closes, VS voltage rises, and is connected the diode back biased between VDD and the VB.Electric capacity provides electric current for the flash drive circuit, and simultaneously, VBS voltage descends, if VBS voltage is lower than the voltage of closing of under-voltage locking, the flash drive circuit quits work.So electric capacity must be enough greatly, to keep the suspension drive circuitry demand in stage half period that the flash metal-oxide-semiconductor opens.
Said resonant circuit unit is made up of coupling capacitance, transformer, oscillating capacitance, and transformer is provided with a former limit and two secondary; Coupling capacitance is connected with the former limit of transformer, oscillating capacitance in proper order, resonant circuit by coupling capacitance be connected to said half bridge drive unit two switching tubes series connection contact places, connect public ground, be connected with an electrode of fluorescent tube one end with oscillating capacitance series connection place by oscillating capacitance by the former limit of transformer; The two ends of transformer first secondary are connected to the two poles of the earth of the filament of fluorescent tube one end respectively, the two ends of second secondary are connected to the two poles of the earth of the filament of the fluorescent tube other end respectively, and the coupling capacitance two ends also are connected to resistance.Before lamp is not lighted; Former limit of transformer and oscillating capacitance constitute high Q value series resonant tank; During near the resonance point frequency of LC series resonant circuit, moment produces high pressure at fluorescent tube (parallelly connected with resonant capacitance) two ends at the output frequency of half-bridge, punctures and lights fluorescent tube.After lamp is lighted, the fluorescent tube conducting, the fluorescent tube equivalence of conducting this moment is the resistance with negative resistance charactertistic, and the resonance point frequency is moved down rapidly, and the Q value reduces rapidly, and it is normal that lamp tube ends voltage recovers.The main effect of coupling capacitance is to cut off direct current signal, though coupling capacitance be serially connected in the resonant tank because the value of coupling capacitance is more a lot of greatly than the value of resonant capacitance, so resonance frequency is mainly determined by resonant capacitance and transformer; Because during fluorescent lamp operation, lamp resistance presents negative resistance charactertistic, this moment, transformer played the effect of ballast; Coupling capacitance two ends and to be connected to resistance be for after preventing that lamp from lighting produce to roll ring.
Lamp current in said lamp current and the lamp open circuit detecting unit detects and is made up of diode serial conversion resistance; Series connection point passes through connecting resistance; Behind capacitor filtering, be connected to the IL pin of control chip PT5623, diode anode connects an electrode of fluorescent tube one end filament, the public ground of transfer resistance one termination; Lamp open circuit detects and is made up of divider resistance and capacitance, divider resistance be connected to respectively publicly and fluorescent tube and electrode that the former limit of transformer is connected between, the divider resistance output point is connected to the EOL pin of control chip PT5623 through capacitance.Thereby form lamp current negative feedback control.The filtering of a voltage signal process of sampling lamp current generation connection resistance capacitance is sent into PT5623 inside and is formed the input of light modulation OTA jointly with dim signal DIM, thereby determines the frequency of voltage controlled oscillator to control lamp brightness.The open lamp protection function is by the built-in window comparator of PT5623, and wherein Upper threshold VEOLH is 3.5V, and Lower Threshold VEOLL is 1.5V, bias voltage 2.5V.Pin EOL is the open lamp protection test side.EOL holds external light tube electric voltage sampler, and is coupled to EOL end, when the voltage that is coupled to the EOL end during greater than 3.5V or less than 1.5V; PT5623 is through detect after the delay of 320mS again; If the EOL state still exists, the oscillator failure of oscillations, system closing.The condition that makes system withdraw from this state and restart is to rise to more than the 10.8V once more after VDD voltage drops to below the 8V.The EOL protective circuit is only started working in lamp igniting success and after postponing 640mS, the interference that produces when avoiding lighting a fire.
Said civil power detecting unit is composed in series by rectifier diode and divider resistance, and the divider resistance output is connected to the ACD pin of control chip PT5623 and is provided with filter capacitor.Control chip PT5623 has the team control function; Control chip PT5623 is the frequency of AC input signal with the over-sampling civil power; And be translated into CLK signal with city's signal of telecommunication same frequency and be used for driving dim signal and change; So just can guarantee the consistency of the dim signal of each fluorescent tube, thereby realize synchronous light modulation.ACD end sampling civil power passes through the sampling half-wave voltage signal, and sends into the inner 3V-5V hysteresis loop comparator of PT5623, produces the CLK square wave simultaneously.Here suitably select the divider resistance value to make the peak value of the half-wave voltage signal of input ACD end be greater than 5.5V, less than vdd voltage.It is for PT5623 provides cut-off signals that ACD end also has a function, when lamp turn-offs action when occurring in low bright pattern, because the energy storage of filter capacitor; VDD voltage can't drop to minium operation voltage very soon; So need a cut-off signals, PT5623 judges through the time of detecting in the power frequency component between two rising edges whether the AC input breaks off; After the process time-delay of 51.2mS; Also do not detect the next time-delay of rising, PT5623 will be triggered and turn-off whole lamp, counts cut-off signals one time.
Above-mentioned light adjusting controller is processed the PCB wiring board, be arranged in the sleeve pipe of bushing type fluorescent lamp, promptly become bushing type adjusting brightness of fluorescent lamp controller, make conventional fluorescent lamps become the electricity-saving lamp of tunable optical.Dismounting for ease; The replacing fluorescent tube is convenient, and said sleeve pipe is a kind of simple dismountable bushing type, and it comprises the plug that is separately positioned on lamp tube ends; The jointing holes that fluorescent tube is installed is arranged in the plug; Plug is outside equipped with the lamp holder switching device shifter that is mated connection, and wiring board is installed between plug and the lamp holder switching device shifter rear aperture of lamp holder switching device shifter through patching external member; The dismountable lamp holder that is mated that is provided with of this opening part is provided with the light adjusting controller wiring board and is electrically connected with lamp tube electrode in the lamp holder.Perhaps the electricity-saving lamp of light adjusting controller and similar structures such as spiral is used, and makes electricity-saving lamp become the electricity-saving lamp of tunable optical.In order to compose a piece of writing conveniently, this specification mainly with the bushing type fluorescent lamp as main description object.
Light-dimming method is following: when turning on light for the first time, under the control of electricity-saving lamp light adjusting controller, fluorescent lamp was brightened by minimum brightness in 8 ~ 9 seconds light modulation time gradually; If in the process that brightens, a certain brightness is required desirable brightness, closes fluorescent lamp at once; In turn off delay time, turn on light again then; Fluorescent lamp restarts the back and gets into constant brightness, and the light modulation process is accomplished in the brightness before promptly turn-offing; If turn off the light action again, fluorescent lamp will come back to initial condition; If in 8 ~ 9 seconds light modulation time, do not turn-off operation, fluorescent lamp can reach maximum brightness gradually and keep, and after this turns off the light again, and fluorescent lamp can be got back to initial condition once more.For intuitivism apprehension, the light modulation flow process is referring to flow process shown in Figure 4.
Row are that the relation that example describes light modulation time and brightness of fluorescent lamp sees the following form with the test of the adjusting brightness of fluorescent lamp of 25W below:
| Time (s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Power (W) | 10 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 26 |
The reflection of the power of fluorescent lamp is brightness of fluorescent lamp in the table, and power is big more, and brightness is just high more.Can know that by last table turn on light and turn off the light in back 2 seconds, fluorescent lamp operation is 10W at lowest power; After turning on light, fluorescent lamp power averaging per second increases 2W; Last second, fluorescent lamp operation was at maximum power 26W.Being reflected to the brightness of fluorescent lamp, is exactly that brightness increases gradually.Thereby after turning on light for the first time, turn off the light after in dimming scope, reaching required brightness, turn on light, fluorescent lamp promptly is operated in the brightness of adjustment.
The beneficial effect that the present invention adopts technique scheme to reach is:
1, circuit is simple, and is with low cost, and control chip PT5623 power supply circuits are simple, stable, low in energy consumption;
2, the low-light level igniting is supported in lamp current negative feedback control;
3, good filament pre-heating, but the significant prolongation lamp tube service life also helps reducing the fluorescent tube ignition voltage;
4, light modulation only need be switched switch No. one time;
5, has the open lamp protection function, the defencive function of promptly dying of old age;
6, whole apparatus structure is simple, easy accessibility, and it is convenient to change fluorescent tube.
Description of drawings
Fig. 1 is the theory diagram of electricity-saving lamp light adjusting controller;
Fig. 2 is a control chip PT5623 built-in function block diagram;
Fig. 3 is the circuit theory diagrams of electricity-saving lamp light adjusting controller;
Fig. 4 is the switch light modulation flow chart of electricity-saving lamp light adjusting controller;
Fig. 5 is the switch light modulation operation chart of electricity-saving lamp light adjusting controller;
Fig. 6 is the STRUCTURE DECOMPOSITION sketch map of the Casing-Type Energy-Saving Lamp of band light adjusting and controlling device;
Fig. 7 is the sketch map of spiral electricity-saving lamp.
Description of reference numerals:
50, slotted eye 51, sleeve pipe 52, fluorescent tube 53, plug 54, lamp holder switching device shifter 541, convex tendon 542, the line of rabbet joint 55, wiring board 551, metallic sheath 56, patch external member 57, lamp holder 58, master control circuit 59, arc recess Tdim, light modulation time T off, turn off delay time time t, lighting time at interval.
Embodiment
As shown in Figure 1; The theory diagram of electricity-saving lamp light adjusting controller has been shown among the figure; Can be known by figure: AC/DC converting unit 1 is connected 3 with power supply unit 2, half bridge drive unit respectively; Power supply unit 2 is connected with half bridge drive unit 3, control unit 5, and control unit 5 is connected with civil power detecting unit 4, lamp current and lamp open circuit detecting unit 7, half bridge drive unit 3 respectively, and lamp current is connected with fluorescent lamp load 8 with lamp open circuit detecting unit 7; Fluorescent lamp load 8 is connected with resonant circuit unit 6, and the circuit unit 6 that shakes is connected with half bridge drive unit 3.
For the better technical scheme of understanding electricity-saving lamp light adjusting controller disclosed by the invention; Fig. 2 shows control chip PT5623 built-in function block diagram; Can know that by Fig. 2 and Fig. 4 the inner integrated MCU of control chip PT5623 is after the pyrogene merit that uses as a lamp; System gets into operational mode, the automatic judgement state of control chip PT5623 meeting:
1) following three kinds of situations can make lamp works behind minimum brightness 1.28S, enter into linear light-modulating mode:
Turned off the light last time and this light a lamp between the turn off delay time time T off that surpass to set of time difference;
Operating state was maximum brightness before turning off the light last time;
Operating state was non-dimming state before turning off the light last time.
2) headlight is operated in light-modulating mode if turned off the light last time, and the time of turning off the light less than the turn off delay time time T off that sets, fluorescent lamp will be operated in the brightness when turning off the light last time; After lighting a fire successfully; Operating frequency is determined with lamp current feedback voltage signal VIL by the voltage (0-2.5V) of inner MCU output jointly: the voltage signal of the output of inner MCU and lamp current sampling end IL is sent into the inner OTA of control chip PT5623 and is compared; The voltage of CP is regulated in the output of its OTA, and delivers to VCO and regulate output frequency.After the voltage of CP reached 4.5V, circuit working was in minimum frequency of operation.
As shown in Figure 3, the circuit theory diagrams of electricity-saving lamp light adjusting controller have been shown among the figure, can know by figure:
In the AC/DC converting unit 1; The ac input end of rectifier bridge D2 is electrically connected with the city, frequency modulation filter capacitor CX1 of output parallel connection; The output anode is connected to a filter inductance L1, and the output negative terminal is connected on public ground, and filter capacitor C1 positive pole is connected on filter inductance L1 rear end, negative pole connects public ground.
In the control unit 5; The pin 2 of control chip IC1 be connected to public ground, pin 3 through capacitor C 4 be connected to that public ground, pin 4 are connected to publicly through resistance R 8 and connect, pin 5 through resistance R 9 be connected to public ground, pin 6 through parallel connection capacitor C 15 and resistance R 10 together be connected to public ground, pin 7 is connected to public ground through capacitor C 6, capacitor C 6 two ends be parallel with the resistance R 11 that is cascaded and capacitor C 5, pin 9 through capacitor C 9 be connected to public ground, pin 10 is connected to pin 9 through resistance R 14.In addition, the pin 1, negative electrode that the anode of bootstrap diode D3 is connected to control chip IC1 is connected to the pin 16 of control chip IC1 through current-limiting resistance R25, and the pin 16 of control chip IC1 links to each other with pin 14 through capacitor C 8.Wherein, the amount of capacity of adjustment capacitor C 4 can be adjusted turn off delay time time T off.
In the civil power detecting unit 4; Rectifier diode D1 and divider resistance R1, R2 series connection, rectifier diode D1 anode connects civil power L line, and divider resistance R2 is connected to public ground; Filter capacitor C7 of divider resistance R2 parallel connection, divider resistance R1, R2 output are connected to the pin 12 of control chip IC1.
In the half bridge drive unit 3, the drain electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 source series, its series connection contact is connected to the pin 14 of control chip IC1; The source electrode of metal-oxide-semiconductor Q1 is connected to inductance L 1 rear end, and the drain electrode of metal-oxide-semiconductor Q2 connects public ground, and the grid of metal-oxide-semiconductor Q1 is connected to the pin 15 of control chip IC1 through resistance R 12, and the grid of metal-oxide-semiconductor Q2 is connected to the pin 13 of control chip IC1 through resistance R 13.
In the power supply unit 2, starting resistance R3, R4 series connection, starting resistance R3 is connected to inductance L 1 rear end, and starting resistance R4 is connected to public ground through filter capacitor C2; Resistance R 7 one is connected to the pin 1 that starting resistance R4 and filter capacitor C2 tie point place, are connected to control chip IC1, and voltage-stabiliser tube ZC1 negative electrode is connected to the pin 1 of control chip IC1, and anode is connected to public ground, and filter capacitor C3 is connected in parallel on voltage-stabiliser tube ZC1 two ends; The anode of diode D4 is with the negative electrode series connection of diode D5; The negative electrode of diode D4 is connected to starting resistance R4 and filter capacitor C2 tie point place; The anode of diode D5 is connected to public ground, and capacitor C 12 1 is connected to the series connection contact place of metal-oxide-semiconductor Q1, Q2, the other end is connected to diode D4, D5 through current-limiting resistance R6 series connection contact place.
In the resonant circuit unit 6, coupling capacitance C13 two ends parallel connection resistance R 23, an one of which are connected to the series connection contact place of metal-oxide-semiconductor Q1, Q2, the pin 1 that the other end is connected to transformer T1; Pin 2 and the pin 6 of transformer T1 are connected to the electrode LU1 of fluorescent tube, the electrode LU2 that pin 5 is connected to fluorescent tube, the electrode LD2 that pin 3 is connected to fluorescent tube, the electrode LD1 that pin 4 is connected to fluorescent tube.
In lamp current and the lamp open circuit detecting unit 7; After being connected in parallel, resistance R 21, R22, R23 connect with the negative electrode of diode D7; Its series connection contact is connected to the pin 8 of control chip IC1 through resistance R 20, the R19 of series connection, and the series connection contact of resistance R 20, R19 is connected to public ground through capacitor C 10; The anode of diode D7 is connected to the electrode LD1 of fluorescent tube, and electrode LD1, anode that diode D6 negative electrode is connected to fluorescent tube are connected to public ground; Divider resistance R16, R18, R17 are cascaded in proper order, and divider resistance R16 one is connected to public ground, an other end is a voltage output end, and voltage output end is connected to filter capacitor C19 through the pin 11 of control chip IC1 between voltage output end and the public ground; Divider resistance R17 one is connected to the electrode LU1 of fluorescent tube.
Foregoing circuit is processed printed wiring board by annexation; And through the scolder welding in the circuit board with the respective electronic device; Put in the sleeve pipe of bushing type fluorescent lamp as shown in Figure 6, promptly become a kind of Casing-Type Energy-Saving Lamp light adjusting and controlling device, make conventional fluorescent lamps become electricity-saving lamp.
As shown in Figure 6, said sleeve pipe 1 is a kind of simple dismountable bushing type, and it comprises the plug 53 that is separately positioned on fluorescent tube 52 two ends; Be provided with dividing plate in the plug 53; The jointing holes that fluorescent tube is installed is arranged on the dividing plate, the peripheral a plurality of louvres that distribute of jointing holes, plug 53 is outside equipped with the lamp holder switching device shifter 54 that is mated connection; Wiring board 55 is installed between plug 53 and the lamp holder switching device shifter 54 through patching external member 56; The rear aperture of lamp holder switching device shifter 54, the dismountable lamp holder 57 that is mated that is provided with of this opening part is provided with light adjusting controller wiring board 58 and is electrically connected with lamp tube electrode in the lamp holder 57.Lamp holder switching device shifter 54 comprises the conversion body that is tubular, built-in cavity; Lamp holder 57 adopts the mode of pegging graft to be connected with the lamp holder switching device shifter; The convex tendon 541 and the line of rabbet joint 542 vertical with convex tendon 541 more than two are set along the rear aperture edge of lamp holder switching device shifter; The locating convex block that the inwall setting of lamp holder and the groove and that this convex tendon is connected match with the said line of rabbet joint, through the line of rabbet joint and the cooperation position of lamp holder convex tendon that changes the lamp holder switching device shifter, thus the pin position of adjusting fluorescent tube.The middle part of wiring board 55 is fixed with two metallic sheaths 551, and the jointing holes that the electrode of fluorescent tube 52 passes on the plug 53 is connected with this metallic sheath; Two metallic sheaths pass the back side of wiring board 55, and the end face middle part of lamp holder switching device shifter forms and holds the jack that two metallic sheaths pass.The end face of lamp holder switching device shifter is provided with slotted eye, and the bottom of slotted eye extends internally and is provided with symmetrical elasticity card base, and connector is anchored in the slotted eye through the elasticity card base.Lamp holder 57 adopts the end cap that has lamp base, and the end of end cap is provided with arc recess 59, and arc recess surface is evenly distributed with several slotted eyes 50.
Need to prove; Above-mentioned Casing-Type Energy-Saving Lamp light adjusting and controlling device is a kind of advantageous applications mode of above-mentioned light adjusting controller; Be not that above-mentioned light adjusting controller is exhaustive; The annex that for example above-mentioned light adjusting controller can also be arranged on fluorescent lamp is arranged on other position, is electrically connected with fluorescent tube again, perhaps is used with the spiral electricity-saving lamp that waits similar structures as shown in Figure 7 and can realizes brightness adjustment control.
Referring to Fig. 5, can know by figure, under the control of electricity-saving lamp light adjusting controller; Fluorescent tube (electricity-saving lamp) is in initial condition, i.e. luminance not is during switch closure; The electricity-saving lamp light adjusting controller has two kinds of working methods, and one is the nominal brightness working method, i.e. dimming mode not; Beginning electricity-saving lamp light adjusting controller control lamp brighten gradually naturally maximum brightness and steady operation, initial condition is replied in the back up to turning off the light.Another is a dimming mode, and when turning on light for the first time, electricity-saving lamp light adjusting controller control fluorescent tube (electricity-saving lamp) is (Tdim is 8 ~ 9 seconds usually) in the light modulation time of Tdim; Brightened gradually by minimum brightness, if in the process that brightens, a certain brightness is required desirable brightness; Switch breaks off; And then in turn off delay time time T off, turn on light, promptly < Toff, electricity-saving lamp light adjusting controller control fluorescent tube (electricity-saving lamp) restart the back and directly get into constant brightness lighting time at a distance from t again; Be the desirable brightness before turning off the light last time, accomplish the light modulation process; If lighting time surpasses turn off delay time time T off, i.e. t at a distance from t>Toff, the control of electricity-saving lamp light adjusting controller will come back to initial condition, need carry out light modulation again.What deserves to be mentioned is,, can solve through the amount of capacity of adjustment capacitor C 4 if turn off delay time time T off is too short.
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (9)
1. electricity-saving lamp light adjusting controller is characterized in that comprising:
The AC/DC converting unit is with the DC power supply that is converted into of electric main;
The civil power detecting unit is sampled to city's value of electrical signals and frequency, output sampled value and mains frequency;
Lamp current and lamp open circuit detecting unit, the current signal and the voltage signal of the load of detection fluorescent lamp feed back to control unit;
Control unit receives city's signal of telecommunication and lamp current signal, lamp voltage signal, and the signal that receives is handled, the output control signal corresponding;
Half bridge drive unit receives the control signal that control unit is exported, power output;
The resonant circuit unit is coupled to half bridge drive unit, driven by the half bridge drive unit power output, and couples power to the fluorescent lamp load;
Power supply unit starts power supply and working power for control unit provides.
2. electricity-saving lamp light adjusting controller according to claim 1; It is characterized in that: said half bridge drive unit is in series by two switching tubes; One of one of them switching tube is connected to the anode of DC power supply; One of a switching tube is connected to the negative terminal of power supply, and two control end of switching tube are connected to control corresponding unit controls signal output part through resistance respectively, and the series connection point of contact of two switching tubes is the power output end.
3. electricity-saving lamp light adjusting controller according to claim 2 is characterized in that: said switching tube is a metal-oxide-semiconductor.
4. electricity-saving lamp light adjusting controller according to claim 2 is characterized in that: said control unit is that control chip and peripheral some resistance thereof and the electric capacity of PT5623 is formed by model.
5. electricity-saving lamp light adjusting controller according to claim 4 is characterized in that: said power supply unit is made up of starting resistance, charge pump, pressurizer and dual stage filter; Starting resistance is connected to the anode of DC power supply; Charge pump is by two diodes and the current-limiting resistance that is connected on two diode tie points by head and the tail series connection; And the electric capacity of this current-limiting resistance series connection, this electric capacity one end is connected with two switching tube series connection contacts of said half bridge drive unit; The anode of one of them diode connects public ground; The negative electrode of another diode is connected with starting resistance; The tie point place is connected to filter capacitor and current-limiting resistance, and this current-limiting resistance is in series with the pressurizer that is connected with ground, and these pressurizer two ends are parallel with another filter capacitor; Two filter capacitors constitute dual stage filter, and the output of this pressurizer is connected to the vdd terminal of control chip PT5623.
6. electricity-saving lamp light adjusting controller according to claim 5; It is characterized in that: order is in series with bootstrap diode, current-limiting resistance, electric capacity between the VDD pin of said control chip PT5623 and VS pin, and the VB pin of control chip PT5623 is connected with the capacitances in series contact with current-limiting resistance.
7. electricity-saving lamp light adjusting controller according to claim 5 is characterized in that: said resonant circuit unit is made up of coupling capacitance, transformer, oscillating capacitance, and transformer is provided with a former limit and two secondary; Coupling capacitance is connected with the former limit of transformer, oscillating capacitance in proper order, resonant circuit by coupling capacitance be connected to said half bridge drive unit two switching tubes series connection contact places, connect public ground, be connected with an electrode of fluorescent tube one end with oscillating capacitance series connection place by oscillating capacitance by the former limit of transformer; The two ends of transformer first secondary are connected to the two poles of the earth of the filament of fluorescent tube one end respectively, the two ends of second secondary are connected to the two poles of the earth of the filament of the fluorescent tube other end respectively, and the coupling capacitance two ends also are connected to resistance.
8. electricity-saving lamp light adjusting controller according to claim 7; It is characterized in that: the lamp current in said lamp current and the lamp open circuit detecting unit detects and is made up of diode serial conversion resistance; Series connection point passes through connecting resistance; Behind capacitor filtering, be connected to the IL pin of control chip PT5623, diode anode connects an electrode of fluorescent tube one end filament, the public ground of transfer resistance one termination; Lamp open circuit detects and is made up of divider resistance and capacitance, divider resistance be connected to respectively publicly and fluorescent tube and electrode that the former limit of transformer is connected between, the divider resistance output point is connected to the EOL pin of control chip PT5623 through capacitance.
9. electricity-saving lamp light adjusting controller according to claim 8 is characterized in that: said civil power detecting unit is composed in series by rectifier diode and divider resistance, and the divider resistance output is connected to the ACD pin of control chip PT5623 and is provided with filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100635481A CN102655707A (en) | 2012-02-22 | 2012-03-13 | Dimming control device for energy-saving lamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210040305 | 2012-02-22 | ||
| CN201210040305.6 | 2012-02-22 | ||
| CN2012100635481A CN102655707A (en) | 2012-02-22 | 2012-03-13 | Dimming control device for energy-saving lamp |
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| CN102655707A true CN102655707A (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100635481A Pending CN102655707A (en) | 2012-02-22 | 2012-03-13 | Dimming control device for energy-saving lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582163A (en) * | 2014-12-29 | 2015-04-29 | 东莞市神州视觉科技有限公司 | Light source controller |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202551480U (en) * | 2012-02-22 | 2012-11-21 | 伍拓山 | Dimming control device of energy saving lamp |
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- 2012-03-13 CN CN2012100635481A patent/CN102655707A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202551480U (en) * | 2012-02-22 | 2012-11-21 | 伍拓山 | Dimming control device of energy saving lamp |
Non-Patent Citations (1)
| Title |
|---|
| ADALI201112: "《百度文库 Http://wenku.baidu.com/link?url=tpqjewbc-tdrrrsw7qxqanxpkqfr6ud-hwyq4ytmpvlolcjs_8nlpkr3s2jirk1ytaixbqbsr-hxr32nqyz1as4fw2v5gfz3ex024ealbqe》", 23 December 2011, article "《PT5623简介》" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104582163A (en) * | 2014-12-29 | 2015-04-29 | 东莞市神州视觉科技有限公司 | Light source controller |
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