CN110278632A - The tandem type LED light string of low power consumption - Google Patents
The tandem type LED light string of low power consumption Download PDFInfo
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- CN110278632A CN110278632A CN201910520934.0A CN201910520934A CN110278632A CN 110278632 A CN110278632 A CN 110278632A CN 201910520934 A CN201910520934 A CN 201910520934A CN 110278632 A CN110278632 A CN 110278632A
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- power consumption
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The present invention provides a kind of tandem type LED light string of low power consumption, includes female lamp string and at least one sub- lamp string.Female lamp string reception carrier wave luminous signal control light emitting diode module carries out luminous.Sub- lamp string cascades female lamp string.The signal enhancement device of sub- lamp string enhances the carrier wave luminous signal, luminous to drive light emitting diode module to carry out.When the voltage of carrier wave luminous signal is less than low level voltage, which enters low power consumption mode.
Description
Technical field
The present invention is in relation to a kind of LED light string, the tandem type LED light string of espespecially a kind of low power consumption.
Background technique
Since light emitting diode (light-emitting diode, LED) has the high and low power consumption of luminous efficiency, service life
The advantages of length, fast response time, reliability height etc., therefore, light emitting diode is widely with lamp bar (light bar) or lamp string
The series, parallel of (light string) or series-parallel connection type, are applied to lighting lamp or decoration is used and shone, such as
Christmas tree light decorative, sport footwear luminous effect etc..
By taking festive light as an example, complete LED lamp, which basically comprises LED light string, (to be had multiple
Lamp) with drive the lamp driving unit.Driving unit and the lamp string are electrically connected, and by electric power needed for providing the lamp with
And the control signal with luminous data, it is controlled in a manner of control or in the way of synchronization, realizes that LED lamp is more
The light output effect of sample and variation.With advances in technology, there is the control signal for the data of shining can pass through the side of carrier wave
Formula, luminous signal is equipped on power line, it can be achieved that provide the function of electric power and data transmission with identical circuit framework, with
Simplify wires design, reduce circuit volume, and is conducive to control the design of route.
However, when multiple (item) lamp string bunchiness in cascaded fashion, since the lamp string of rear class is easy because route is longer
Cause the data signal of prime to cause the decaying of signal when transmitting toward rear class, and data received by the lamp string of rear class is caused to believe
The problem of number can not recognizing or be judged as noise, cause the lamp string of rear class that its luminescent behavior (mode) can not correctly be presented,
Such as color change, light on and off (dark) mode, light on and off frequency.
Furthermore due to typically can to guarantee correctly to recognize the voltage that LED control signal is low level
By quick discharging circuit, control LED control signal rapidly reduce total parasitic capacitance of its voltage quasi position or route compared with
Small LED light string, which easily makes LED control signal rapidly, reduces its voltage quasi position.And work as LED control signal rapidly
It reduces, it is easy to LED control signal occur lower than after cognizable low level voltage, and continue rapidly to reduce, so that shining
Control signal touches reset voltage, so that unnecessary resetting malfunction occurs for circuit, causes the exception of light emitting diode module
Judgement and malfunction.
Summary of the invention
The purpose of the present invention is to provide a kind of tandem type LED light strings of low power consumption, solve the problems, such as aforementioned.
To achieve the aforementioned purpose, the tandem type LED light string of low power consumption proposed by the invention includes a female lamp string
With at least one sub- lamp string.Female lamp string includes LED light string, output control switch and controller.LED light string
With multiple light emitting diode modules.Output control switch couples LED light string.Controller couples output control switch,
Carrier wave luminous signal is received, and luminous to drive light emitting diode module to carry out by control output control switch.Sub- lamp string grade
Join female lamp string.Sub- lamp string includes LED light string, output control switch and signal enhancement device.LED light string tool
There are multiple light emitting diode modules.Output control switch couples LED light string.The coupling output control of signal enhancement device is opened
It closes, receives carrier wave luminous signal, and enhance carrier wave luminous signal, by control output control switch to drive LED die
Group carries out luminous.When the voltage of carrier wave luminous signal is less than low level voltage, light emitting diode module enters low power consumption mode.
In one embodiment, female lamp string also includes out connector.Out connector has positive voltage terminal, negative voltage side
Son and data terminal.Sub- lamp string also includes input connector.Input connector has power pin and data pin.Power supply connects
Foot is respectively coupled to positive voltage terminal and negative voltage terminal, and data pin couples data terminal.
In one embodiment, sub- lamp string also includes out connector, couples the input connector of another sub- lamp string.
In one embodiment, signal enhancement device includes control switch and power adapter.Power adapter coupling control is opened
It closes.When control switch conducting, power adapter receives carrier wave luminous signal, and enhances carrier wave luminous signal.
In one embodiment, data terminal be coupled in light emitting diode module most between latter two.
In one embodiment, light emitting diode module includes voltage comparison unit.When the voltage of carrier wave luminous signal is less than
Low level voltage, voltage comparison unit output control signal control light emitting diode module enter the low power consumption mould of dormant state
Formula.
In one embodiment, light emitting diode module includes current sense unit.When the voltage of carrier wave luminous signal is less than
Low level voltage, current sense unit output control signal control light emitting diode module enter the low power consumption mould of power save mode
Formula.
In one embodiment, into the time interval after the low power consumption mode of power save mode, light emitting diode module into
The operation of row signal detection and identification；Behind end time section, control signal control light emitting diode module enters dormant state
Low power consumption mode.
In one embodiment, light emitting diode module also includes oscillator, in the low power consumption mode of power save mode, oscillation
Device receives control signal, and oscillator carries out oscillatory work by control signal control with low-power.
In one embodiment, light emitting diode module also includes latch units and oscillator, in the low power consumption of power save mode
In mode, latch units and oscillator receive control signal, and oscillator, by control signal control, stop oscillation work, lock
Memory cell provides Clocked operation by control signal control.
In one embodiment, latch units are the charge-discharge circuit comprising resistance and capacitor.
In one embodiment, latch units are timing circuit.
Tandem type LED light string by the low power consumption proposed solves to pass due to the lamp string of long range in signal
Decaying caused by the process sent, and cause data signal received by the lamp string of rear class that can not recognize or be judged as noise
The problem of, and by shortening data terminal to the wiring distance of LED light string, enable control switch not by line
The decaying of road effect length voltage and can be driven by sufficiently large control voltage, so that control switch is normally switched on
With shutdown, and then signal enhancement device can be acted normally.
In order to be further understood that the present invention to reach technology, means and effect that predetermined purpose is taken, please refers to
Following detailed descriptions and accompanying drawings of the present invention, it is believed that the purpose of the present invention, feature and feature, when can thus be goed deep into and
It is specific to understand, however institute's accompanying drawings are only for reference and description, and are not intended to limit the present invention.
Detailed description of the invention
Fig. 1: for the circuit diagram of female lamp string of the tandem type LED light string of low power consumption of the present invention.
Fig. 2: for the detailed circuit schematic of female lamp string of tandem type LED light string of the present invention.
Fig. 3: for the detailed circuit schematic of the sub- lamp string of tandem type LED light string of the present invention.
Fig. 4: for the schematic diagram of female lamp string of the invention and the cascade system of sub- lamp string.
Fig. 5: for the circuit block diagram of light emitting diode module first embodiment of the present invention.
Fig. 6: for the circuit block diagram of light emitting diode module second embodiment of the present invention.
Fig. 7: for the circuit diagram of voltage comparison unit of the present invention.
Fig. 8: for the waveform diagram of the luminous driving signal of the present invention.
Fig. 9: for the circuit block diagram of light emitting diode module 3rd embodiment of the present invention.
Figure 10: for the circuit block diagram of light emitting diode module fourth embodiment of the present invention.
Figure 11: for the waveform diagram of the luminous driving signal of the present invention.
Figure 12: for the circuit diagram of oscillator of the present invention.
Figure 13: for the waveform diagram of latch units of the present invention operation.
In figure:
100 controllers；10 power-switching circuits；20 control circuits；30 LED light strings；
31,32 ..., 3n light emitting diode module；Sec light emitting control data；311 luminous controling units；
312 address signal processing units；313 address burning units；41 voltage-stablizers；42 oscillators；
43 addresses and document identification device；44 logic controllers；45 displacement buffers；46 output buffer registers；
47 driving circuits；48 address registers；49 address comparators；50 addressed memories；
51 address burning controllers；52 programming signal detectors；53 traffic filters；54 discharge cells；55 current detectors；
56 voltage comparison units；57 latch units；60 electric capacitors；70 out connectors；71 input connectors；
80 signal enhancement devices；81 power adapters；90 female lamp strings；91 sub- lamp strings；FUSE fuse；VAR varistor；
R10 input resistance；C11 input capacitance；D11 ~ D14 diode；CONR control unit；
Qsw output control switch；R22, R23 resistance；C21 capacitor；Dz zener diode；P1, P2 contact；
V+ positive voltage terminal；V negative voltage terminal；Do data terminal；Sc controls signal；Ro resistance；Co capacitor；
R31, R32, R33, R34 resistance；In11 ~ In22 phase inverter；Vlow low level voltage；Vreset reset voltage；
Vd shines driving signal；Vth reference voltage value；Vdis discharge voltage；Vlatch latch voltage；
Slatch latch judges signal；Vac AC power source；Vdc DC power supply；Cv1 first waveform；The second waveform of Cv2；
T11 ~ t14, t21 ~ t23 time point；T1 ~ t3 time point；T time section.
Specific embodiment
The technical content and a detailed description for the present invention, cooperation schema are described as follows.
It is shown in Figure 1, it is the circuit signal of female lamp string of the tandem type LED light string of low power consumption of the present invention
Figure.Female lamp string 90 (hereinafter referred to as female lamp string 90) of the tandem type LED light string is mainly comprising controller 100, output
Control switch Qsw, LED light string 30 and out connector 70.
Controller 100 couples AC power source Vac and output control switch Qsw, so as to conversion AC power source Vac to provide foot
To drive LED light string 30 and control the electric power of output control switch Qsw on or off.
Out connector 70 has positive voltage terminal V+, negative voltage terminal V and data terminal Do.Wherein positive voltage terminal
Sub- V+ and negative voltage terminal V is respectively coupled to convert the positive and negative voltage of the DC power supply of output via controller 100.Data end
Sub- Do then receives control respectively light emitting diode module 31,32 ..., the carrier wave luminous signal of 3n light output effect and variation
(including data and the address details of shining).It so can be achieved to provide the function of electric power and data transmission with identical circuit framework,
To simplify wires design, reduce circuit volume, and be conducive to control the design of route.
It is shown in Figure 2, it is the detailed circuit schematic of female lamp string of tandem type LED light string of the present invention, tool
Body, Fig. 2 show the detailed circuit of controller 100.Power-switching circuit 10 and control circuit 20 can be integrated into controller
100, specifically it can be to be realized comprising power-switching circuit 10 and the entity circuit control box of control circuit 20.Power supply conversion
Circuit 10 receives AC power source Vac, and converts AC power source Vac as DC power supply Vdc, and wherein DC power supply Vdc can produce
In in the output capacitance at output both ends for being connected across power-switching circuit 10.
Control circuit 20 receive DC power supply Vdc, with provide control circuit 20 with it is straight needed for LED light string 30
The supply of galvanic electricity source.Controller 100 couples AC power source Vac and LED light string 30 by power supply line.LED light lamp
String 30 includes multiple light emitting diode modules (or LED light lamp) 31,32 ..., 3n, multiple light emitting diode module
31,32 ..., 3n are connected in a series arrangement, and with output control switch Qsw electric property coupling.In this embodiment, light emitting diode
Lamp string 30 is the lamp string with burning function, therefore the respectively light emitting diode module 31,32 ..., 3n have respectively to luminous money
Material, address details carry out the numerical digit and analog line of burning processing.
It is shown in Figure 3, it is the detailed circuit schematic of the sub- lamp string of tandem type LED light string of the present invention.Institute
The sub- lamp string 91 (hereinafter referred to as sub- lamp string 91) for stating tandem type LED light string is mainly strong comprising input connector 71, signal
Change device 80, output control switch Qsw, LED light string 30 and out connector 70.Wherein, output control switch Qsw,
The operation of LED light string 30 and out connector 70 is identical as female lamp string 90 as movement, and details are not described herein.Input
Positive voltage terminal V+, the negative voltage terminal of the out connector 70 of the corresponding female lamp string 90 (or the sub- lamp string 91 of previous stage) of connector 71
V and data terminal Do and have there are three pin so that 91 grafting mother lamp string 90 (or the sub- lamp string 91 of previous stage) of group lamp string
When, it can accordingly connect positive voltage terminal V+, negative voltage terminal V and data terminal Do, and by electric power and data toward sub- lamp
91 transmission of string.
Signal enhancement device 80 includes two divider resistance networks, control switch Qc and power adapter 81.Two divider resistances
Network is made of resistance R31, R32 and resistance R33, R34 respectively, and wherein resistance R31, R32 is coupled to control switch Qc's
Control terminal (such as gate), resistance R33, R34 are coupled to the power end (such as drain) of control switch Qc, to provide the place of partial pressure
Reason.Further, by the conducting of control switch Qc, the data that driving power converter 81 is transmitted previous stage
Signal enhancement (enhancing), the decaying caused by being able to solve the lamp string due to long range whereby during signal transmission, and
The problem of causing data signal received by the lamp string of rear class that can not recognize or be judged as noise.
It is shown in Figure 4, for the schematic diagram of the female lamp string of the present invention and the cascade system of sub- lamp string.As schematically shown in Figure 4 will
One female lamp string 90 is cascaded with multiple sub- lamp strings 91, is implied that by by 71 grafting mother's lamp string of input connector of first sub- lamp string 91
90 out connector 70, by the out connector of input connector 71 grafting, first sub- lamp string 91 of second sub- lamp string 91
70, and so on, available tandem type LED light string.Furthermore the signal by aforementioned each sub- lamp string 91 is strong
Change device 80, the data signal that previous stage is transmitted can be enhanced, data letter received by the sub- lamp string 91 of so usable rear class
It number all can correctly recognize.It is worth mentioning, cooperation is referring to shown in Fig. 1 (female lamp string 90) or Fig. 3 (sub- lamp string 91), and with mother
For lamp string 90 cascades sub- lamp string 91, in order to enable sub- lamp string 91 signal enhancement device 80 control switch Qc by foot
Enough big control voltage is driven, can also be by by data terminal Do other than it can be specifically designed the resistance value of resistance R31, R32
The contact P1 being coupled between the last one light emitting diode module 3n and penultimate light emitting diode module 3n-1, or
Data terminal Do is coupled to penultimate light emitting diode module 3n-1 and third last light emitting diode module 3n-2
Between contact P2 enable control switch Qc by wiring distance of the data terminal Do to LED light string 30 is shortened
It is enough not influenced the decaying of voltage by line length and be driven by sufficiently large control voltage, enable control switch Qc just
It often is switched on and turns off, and then signal enhancement device 80 can be acted normally.
It is shown in Figure 5, it is the circuit block diagram of light emitting diode module first embodiment of the present invention.Brought forward institute
It states, LED light string 30 is the lamp string with burning function, therefore respectively light emitting diode module 31,32 ..., 3n has
Respectively luminous data, address details are carried out with the numerical digit and analog line of burning processing, such as is responsible for the luminous control of light emitting control
Unit 311, the address signal processing unit 312 of responsible address signal processing and the address burning unit of responsible address burning processed
313.For light emitting diode module 31 with burning function as shown in Figure 5 (remaining light emitting diode module 32 ..., 3n
With same circuit box, do not repeat separately), light emitting diode module 31 (i.e. LED light lamp) includes voltage-stablizer 41, vibration
Swing device 42, address and document identification device 43, logic controller 44, displacement buffer 45, output buffer register 46, driving circuit
47, address register 48, address comparator 49, addressed memory 50, address burning controller 51, programming signal detector 52,
Traffic filter 53, discharge cell 54, current detector 55 and voltage comparison unit 56.
Light emitting diode module application series system connection shown in fig. 5, it is therefore desirable to use voltage-stablizer 41 as voltage
Adjusting is used with pressure stabilizing.Furthermore the mode of operation that light emitting diode module shown in fig. 5 is controlled using point, therefore light emitting diode
There is mould group address signal processing unit 312 and address to address details processing (comprising the operation such as judgement, memory, burning) to burn
Unit 313 is recorded, i.e., comprising address register 48, address comparator 49, addressed memory 50, address burning controller 51 and burning
Record signal detection device 52.In other words, if light emitting diode module can omit address signal processing using synchronous mode of operation
Unit 312 and address burning unit 313, it is only necessary to have the luminous controling unit 311 of luminous data processing.
In foregoing circuit, according to the difference of characteristics of signals can divide into analog circuit (analog circuit) partially with number
Position part circuit (digital circuit).Wherein, voltage-stablizer 41, oscillator 42, address burning controller 51, programming signal
Detector 52 and discharge cell 54 belong to artificial circuit part, other then can range digit circuit part.So, in difference
Embodiment in, address burning controller 51 and programming signal detector 52 can also have both analog circuit and digit circuit institute is real
It is existing.Relative to the low consumption electrical characteristics of digit circuit, analog circuit (as voltage-stablizer 41, oscillator 42, luminous controling unit 311,
Location signal processing unit 312, address burning unit 313 and discharge cell 54) then belong to and more being consumed in light emitting diode module 31
The circuit element of electricity.
It is shown in Figure 6, it is the circuit block diagram of light emitting diode module second embodiment of the present invention.Brought forward institute
It states, since light emitting diode module application parallel way shown in fig. 6 connects, second embodiment and shown in fig. 5 first
The most important difference of embodiment be the former (i.e. second embodiment) need not additionally use voltage-stablizer 41 as voltage adjust and surely
Pressure is used.Remaining circuit operation principle and movement are identical as content documented by Fig. 5, therefore no longer repeat in detail herein.
Described in brought forward, to realize the power consumption for being effectively reduced analog circuit, and takes into account and maintain light emitting diode module 31
Normal running, light emitting diode module 31 includes also a comparing unit, to the voltage comparison unit 56 compared as voltage.
By taking the driving signal that shines is voltage signal as an example, voltage comparison unit 56 receives shine driving signal Vd and preset reference voltage
Value Vth.Cooperate shown in Fig. 7, in the present embodiment, voltage comparison unit 56 can use operation amplifier circuit to make as comparator
With wherein received luminous driving signal Vd to be input to the non-inverting input of comparator, separately by reference voltage value Vth
It is input to the inverting input terminal of comparator.By the way that luminous driving signal Vd to be compared with reference voltage value Vth, driven when shining
When dynamic signal Vd is greater than reference voltage value Vth, then the control signal Sc of high levle is exported；Conversely, when the driving signal Vd that shines is small
When reference voltage value Vth, then the control signal Sc of low level is exported.It so is not limited system, it also can be by luminous driving signal
Vd and reference voltage value Vth is separately input into the inverting input terminal and non-inverting input of comparator, then after comparison, can be obtained
The control signal Sc opposite with above-mentioned level, equally can reach the judgement to luminous driving signal Vd.In addition, for the driving that shines
The judgement of signal Vd, can not limit and be realized using operation amplifier circuit, may be used as the circuit that voltage is relatively used such as
It is intended to be limited solely by scope of the invention.
Cooperate shown in Fig. 8, for the waveform diagram of the luminous driving signal of the present invention.Described in brought forward, work as control unit
It is when turning off that CONR, which controls output control switch Qsw, and LED light string 30 reduces voltage in a manner of electric discharge, to provide drive
Respectively light emitting diode module 31,32 of dynamic LED light string 30 ..., the low level electricity of the luminous driving signal Vd of 3n
Pressure.Alternatively, by controlling each light emitting diode module 31,32 ..., the quick discharging circuit in 3n rapidly reduces the letter that shines
Voltage caused by number voltage generation circuit, to provide respectively light emitting diode module 31 of driving LED light string 30,
32 ..., the low level voltage of the luminous driving signal Vd of 3n.Also, by voltage comparison unit 56 for the driving signal that shines
Vd can solve to touch due to repid discharge, which operates the driving signal Vd that causes to shine, quickly to be reduced compared with reference voltage value Vth
Reset voltage Vreset causes the abnormal judgement of light emitting diode module 31 so that unnecessary resetting malfunction occurs for circuit
With malfunction.
Specifically, as shown in the second waveform Cv2, in time point t1, control unit CONR controls output control switch Qsw
To turn off, at this point, the driving signal Vd that shines rapidly is reduced.In time point t2, when reaching reference voltage value Vth, due to
The driving signal Vd that shines is less than (also may be less than or be equal to) reference voltage value Vth, therefore voltage comparison unit as shown in Figure 7
After 56 are compared two voltages, the control signal Sc of low level is exported.At this point, to prevent the driving signal that shines caused by because of repid discharge
Vd is yet further quickly reduced, and therefore, control signal Sc caused by voltage comparison unit 56 then controls LED die
The circuit of more power consumption in group 31, such as but be not limited to analog circuit, voltage-stablizer 41 as shown in Figure 5, shines at oscillator 42
Control unit 311, address signal processing unit 312, address burning unit 313 and discharge cell 54 enter suspend mode
(sleep mode) or it can be described as energy-saving mode (eco mode), significantly to reduce the power consumption of light emitting diode module 31, from
And the speed rapid drawdown that luminous driving signal Vd is reduced.Subsidiary one mentions, and is the signal of succinct Fig. 5 and Fig. 6, wherein being painted input
To the control signal of voltage-stablizer 41, oscillator 42, address burning controller 51, programming signal detector 52 and discharge cell 54
Sc is actually that voltage comparison unit 56 is respectively coupled to voltage-stablizer 41, oscillator 42, address burning controller 51, programming signal
Detector 52 and discharge cell 54, and exported control signal Sc is provided to multiple circuit unit.
After time point t2 as shown in Figure 8, when luminous driving signal Vd is less than reference voltage value Vth, then because above-mentioned should
Multiple analog circuits enter suspend mode, so that the speed for the driving signal Vd decaying that shines slows down, to avoid reset voltage is touched
Vreset.Subsidiary one mentions, can be recognized by design the driving signal Vd that shines low level voltage be reference voltage value Vth or compared with
Reference voltage value Vth is smaller but is greater than the voltage value of reset voltage Vreset, so that reaching repid discharge detecting, being effectively reduced
Power consumption, and the low level voltage for (identification) the luminous driving signal Vd that correctly judges, to enable light emitting diode module 31
Normally driving running.For example, reset voltage Vreset may be designed as 0.7 volt, and reference voltage value Vth may be designed as
1.1 volts, and the low level voltage for the driving signal Vd that shines may be designed as 1.1 volts or smaller 0.8 ~ 1.0 volt, it can
The demand of the response of cooperation integrated circuit or movement is suitably designed and is adjusted.
When time point t3, output control switch Qsw is connected in control unit CONR, is exported with recovery (raising) to luminous
The output voltage of diode lamp luster 30, and light emitting control data Sec generates the driving signal that shines based on the received, so that
LED light string 30 carries out the running of light-emitting mode according to luminous driving signal.Therefore, because the driving signal Vd that shines is big
In reference voltage value Vth, so that control signal Sc caused by voltage comparison unit 56 is converted to high levle by low level, so that
It controls signal Sc and controls voltage-stablizer 41, oscillator 42, luminous controling unit 311, address signal processing unit 312, address burning
Unit 313 and discharge cell 54 leave suspend mode, to restore the normal operating of multiple circuit unit.Similarly, remaining
Light emitting diode module 32 ..., 3n then provides control by the driving signal Vd subsequent period that shines, same to operate herein no longer
It repeats in detail.Whereby, complete LED light string 30 all light emitting diode modules 31,32 ..., the driving of 3n and shine
Control.
It is shown in Figure 9, it is the circuit block diagram of light emitting diode module 3rd embodiment of the present invention.Compared to figure
5, the control signal Sc generated originally as voltage comparison unit 56 changes as produced by current detector 55, therefore 3rd embodiment is simultaneously
The needs of no-voltage comparing unit 56.Cooperate shown in Figure 11, when control unit CONR control output control switch Qsw is shutdown
When, LED light string 30 reduces voltage in a manner of electric discharge, with provide driving LED light string 30 respectively this shine
Diode modules 31,32 ..., the low level voltage of the luminous driving signal Vd of 3n.Alternatively, by controlling each LED die
Group 31,32 ..., the quick discharging circuit in 3n reduce voltage caused by luminous signal voltage generation circuit, rapidly to mention
For driving respectively light emitting diode module 31,32 of LED light string 30 ..., the low level of the luminous driving signal Vd of 3n
Voltage.It is worth mentioning, the present invention adopts Three models to the respectively light emitting diode module 31,32 ..., the control of 3n: the first
For operating mode, second be energy-saving mode (eco mode) and the third be suspend mode (sleep mode), whereby, make
Respectively the light emitting diode module 31,32 ..., 3n also can have both the demand of low power consumption under normal operations.
Operating mode refers to the respectively light emitting diode module 31,32 ..., the internal circuit of 3n (including analog circuit and numerical digit
Circuit) it is in normal required operation.When to reach low power consumption purpose, then first adopt energy-saving mode, also after adopt again not
Sleep mode.Energy-saving mode is mainly as the analog circuit for first closing more power consumption, and it is also contemplated that oscillator and digit circuit
Close fit, therefore energy-saving mode can be by first closing analog circuit other than oscillator or comprising the simulation of oscillator
Circuit so that the source compared with power consumption is greatly reduced, and maintains the normal operating of digit circuit, so that signal detection and identification
It can normally operate.In energy-saving mode, oscillator can adopt the operation of low-power, and need not close.Then it completes to believe
Number detecting turns off oscillator with after the movement of identification, and enters suspend mode.Whereby, it can solve to lead because repid discharge operates
Photoluminescence driving signal Vd is quickly reduced and is touched reset voltage Vreset, so that unnecessary resetting malfunction occurs for circuit,
Cause the abnormal judgement and malfunction of light emitting diode module 31.
Specifically, shown in waveform as shown in figure 11, before time point t11, control unit CONR control output control
Switch Qsw is conducting, and therefore, respectively the light emitting diode module 31,32 ..., 3n are the operation of operating mode.In time point t11
When, it is shutdown that control unit CONR, which controls output control switch Qsw, at this point, the driving signal Vd that shines rapidly is reduced.When
Between t12 when, shine driving signal Vd reach low level voltage Vlow, and pick out luminous driving signal Vd be to it is multiple shine
Diode modules 31,32 ..., 3n (illustrates) driving signal of control hereinafter with a light emitting diode module 31.However, to keep away
Exempt from luminous driving signal Vd to gradually decrease during driving light emitting diode module 31 and touch reset voltage Vreset, make
Unnecessary resetting malfunction occurs for circuit, cause the abnormal judgement of light emitting diode module 31 and malfunction, therefore, when
Between point t12 when, into energy-saving mode, first close analog circuit other than oscillator or the electricity of the simulation comprising oscillator
The source compared with power consumption is greatly reduced in road.It also, is the normal operating for maintaining digit circuit and oscillator, therefore, in the time
The movement that signal detection and identification are completed in the T of section, then in time point t13, into suspend mode, significantly to reduce hair
The power consumption of optical diode mould group 31.Above-mentioned time interval T is time point t12 to the time interval between time point t13, example
As but be not limited to the time spans of several (3 ~ 4) clock cycles.It therefore, can be by completely closing after time point t13
Oscillator minimizes the power consumption of light emitting diode module 31, so not only can reach outside the optimization effect for reducing power consumption,
Can avoid luminous driving signal Vd simultaneously reduces and touches unusual condition caused by reset voltage Vreset.In time point t14
When, since control unit CONR control output control switch Qsw is conducting, the voltage quasi position for the driving signal Vd that shines is extensive
It is multiple.Because the voltage quasi position for the driving signal Vd that shines is greater than low level voltage Vlow, leave the behaviour of (releasing) suspend mode
Make, and enters the operation of next cycle, the operation of recovery mode of operation again.
In addition Figure 11 illustrates the luminous driving signal Vd of relatively narrow time (such as 1 microsecond, system that but not limited to this).It is similar to
The luminous driving signal for the wider time (such as 3 microseconds, system that but not limited to this) that time point t11 ~ time point t14 is illustrated
Vd, the difference of the two are that the luminous driving signal Vd of relatively narrow time before time interval T not yet terminates, i.e., not yet enters suspend mode
Before mode, then because control unit CONR control output control switch Qsw is conducting, the voltage for the driving signal Vd that shines is quasi-
Bit recovery, the again operation of recovery mode of operation.In the case, equally can reach the driving signal Vd that avoids shining reduces and touches
And unusual condition caused by reset voltage Vreset.
It therefore, is laying particular emphasis in energy-saving mode that can be effectively reduced this with operation of sleep mode more the characteristics of the present embodiment
The power consumption of a analog circuit combines and light emitting diode module 31 is maintained to remain to normally drive running, specific circuit behaviour
Work can cooperate referring to Fig. 5, and details are not described herein.
It is shown in Figure 10, it is the circuit block diagram of light emitting diode module fourth embodiment of the present invention.Compared to
3rd embodiment shown in Fig. 9, light emitting diode module also include latch units 57, and remaining circuit unit is identical as Fig. 9.Lock
Memory cell 57 is coupled between the input side and outlet side inside light emitting diode module 31, to provide in operation of sleep mode
When, replace the function of oscillator 42, light emitting diode module 31 is enable to be continued for the movement of signal detection and identification.?
In one embodiment, latch units 57 can be to form the charge and discharge analog circuit with charge and discharge function with resistance, capacitor.
It is illustrated hereinafter, reduction power consumption how will be reached for the present invention and reach energy-efficient technological means.Cooperation referring to
Figure 11, when detecting luminous driving signal Vd and reaching low level voltage Vlow (such as time point t12 or time shown in Figure 11
Point t22), current detector 55 generates control signal Sc, at this point, the more analog circuit of power consumption in light emitting diode module 31,
Such as voltage-stablizer 41, oscillator 42, address burning controller 51, programming signal detector 52 and discharge cell 54, pass through control
Signal Sc processed control and enter energy-saving mode, to reduce main power consumption source, this energy-saving mode, which can be considered, reduces the of power consumption
One stage control model.And the control because of digit circuit and oscillator 42 are closely bound up, therefore, to ensure that digit circuit can be complete
At its necessary running, the oscillator 42 of control analog circuit is taken then to be considered as the second-order for reducing power consumption into suspend mode
Section control model.Specifically, the present invention proposes two kinds of solutions, realizes in energy-saving mode, to 42 low power consumption of oscillator
Control: the first scheme are as follows: make the operation of oscillator 42 in the oscillation of low-power；Second scheme are as follows: with the substitution of charge and discharge circuit
The oscillating operation of oscillator 42.
It is shown in Figure 12, it is the circuit diagram of oscillator of the present invention, and cooperate shown in Fig. 9.With control
For accuracy, control mode by oscillator 42 as clock pulse benchmark is optimal mode.It and is to have both simultaneously
Accurately control and low power consumption demand, therefore, the first scheme of use by providing specific design to oscillator 42,
To realize the oscillatory work of low-power.Oscillator 42 shown in Figure 12 have multiple phase inverter In11 ~ In22 and resistance Ro with
Capacitor Co, circuit connecting mode is only to illustrate to be used, non-to limit the present invention, as long as the oscillator electricity of system clock pulse can be generated
Road is intended to be limited solely by scope of the invention.Wherein, multiple phase inverter In11 ~ In22 are CMOS transistor circuit inverter, can
By designing different transistor sizes, and pass through the control of enable and forbidden energy, realizes the demand accurately controlled with low power consumption.
For example, but cannot this be limitation, design phase inverter In12 and the transistor size of phase inverter In22 are respectively smaller than phase inverter
The transistor size of In11 and phase inverter In21, and phase inverter In11 and phase inverter In21 is controlled by control signal Sc.
When oscillator 42 is normal operating, i.e. the operation of light emitting diode module 31 is (as shown in figure 11 in the operational mode
Time point t12 before), phase inverter In11 ~ In22 is enabled status, therefore, oscillator 42 can with the running of total power,
Time pulse signal is provided.(the time point as shown in figure 11 when detecting luminous driving signal Vd and reaching low level voltage Vlow
T12), control signal Sc control phase inverter In11 and phase inverter In21 produced by current detector 55 is disabled state (at this point, anti-
Phase device In12 and phase inverter In22 is still enabled status), system that but not limited to this also can control phase inverter In12 and phase inverter
In22 is disabled state, and phase inverter In11 and phase inverter In21 is enabled status, and therefore, oscillator 42 still can be with low-power
Running, provides time pulse signal, to maintain digit circuit that can complete its necessary running, and at the same time reaching the low of oscillator 42
Power consuming operation, until the time point t12 shown in Figure 11 of light emitting diode module 31 to the time interval T between time point t13
The interior movement for completing signal detection and identification, then can be fully closed oscillator 42, the suspend mode mould after entry time point t13
Formula.So the connection type, quantity, size of above-mentioned phase inverter and the control mode of control signal are only to illustrate to be used, non-with limit
The system present invention.
It is shown in Figure 13, it is the waveform diagram of latch units of the present invention operation, and cooperate shown in Figure 10.For
It is distinguished in response to the luminous driving signal Vd of wider time (such as 6 ~ 8 microseconds, system that but not limited to this), such as terminating to terminate
The correct operation of the latch signal (latch signal) of knowledge leads to numerical digit to avoid the work for the device 42 that prematurely stops oscillation
Circuit is out-of-sequence and malfunctions.But in order to enable the oscillator 42 of more power consumption early to close to reach low power consumption
Therefore demand as shown in Figure 10, adds the latch units 57 with charge and discharge function, such as with resistance-capacitance charge and discharge electricity
Road is realized, the clocking capability of oscillator 42 can be replaced.It is the luminous drive of 3 microseconds or 1 microsecond for time width described in brought forward
For dynamic signal Vd (signal in the first two period as shown in fig. 13 that), since it is not latch signal, single by latching
The discharge operation (being not limited system, also can be charging operations) of the capacitor of member 57, since its discharge voltage Vdis is higher than in advance
The latch voltage Vlatch of setting, therefore, latch judge signal Slatch for low level.In this case, oscillator 42 can be with
In energy-saving mode in such a way that said low power vibrates, and oscillating operation is closed in suspend mode, realize low power consumption
Power-save operation.
When the driving signal Vd that shines be time width be 6 ~ 8 microseconds latch signal when (third is all as shown in fig. 13 that
The signal of phase), since the discharge time of the capacitor of latch units 57 is more long, so that in time point t1, discharge voltage
Vdis is equal to or less than latch voltage Vlatch, latches judge signal Slatch by low level transition for high levle at this time.Also,
By the continuous discharge of the capacitor of latch units 57, it is to ensure to close after oscillator 42 the driving signal Vd that still is able to maintain to shine
The normal detection of latch signal and control.When time point t2, since control unit CONR control output control switch Qsw is
Conducting, therefore the voltage quasi position for the driving signal Vd that shines restores.Because the voltage quasi position for the driving signal Vd that shines is greater than low level
Voltage Vlow, therefore, latch judge that signal Slatch, for low level, is left the behaviour of (releasing) suspend mode by high levle transition
Make, and enters the operation of next cycle, the operation of recovery mode of operation again.
However, the normal detection and control for latch signal be not with above-mentioned discharge voltage Vdis and latch voltage
The comparison of Vlatch is limitation, also the latching action of latch units 57 can be carried out using preset time span, such as latch
Unit 57 can be a timing circuit to realize, therefore, when meeting or exceeding preset time span, then start latch units 57
Latch operation, equally can reach the demand of low power consumption.
In conclusion the present invention has features and advantages below:
1, the data signal that can be transmitted previous stage by driving power converter strengthens (enhancing), be able to solve whereby due to
The decaying caused by the process that signal transmits of the lamp string of long range, and cause data signal received by the lamp string of rear class without
The problem of method recognizes or is judged as noise.
2, it can enable control switch not by line by shortening data terminal to the wiring distance of LED light string
The decaying of road effect length voltage and can be driven by sufficiently large control voltage, so that control switch is normally switched on
With shutdown, and then signal enhancement device can be acted normally.
3, it may be implemented under identical line architecture, can transmit luminous driving signal and power supply to LED light lamp
The effect of string.
4, it is fast that the luminous driving signal of repid discharge control can be provided by the quick discharging circuit of each light emitting diode module
Its voltage quasi position is reduced, fastly to ensure that all concatenated light emitting diodes can obtain complete light emitting control.
5, it simplifies application circuit and solves the voltage of LED control signal because quick reduction causes to touch reset voltage, cause
The problem of light emitting diode module judgement extremely is with malfunction.
6, it is effectively reduced the power consumption of multiple analog circuit in light emitting diode module, combines maintenance light-emitting diodes
Pipe die group can normally drive running.
7, a mode of operation for control can be used in light emitting diode module, and synchronous mode of operation also can be used, can not only mention
The elasticity and convenience of high control circuit design, at the same can be realized the diversified light output effect of LED lamp with
Variation.
8, by the particular design to pierce circuit, so that oscillator is before entering sleep mode, with low-power
Oscillation provides time pulse signal, and then maintains digit circuit that can complete its necessary running, reaches the low power consumption behaviour of oscillator
Make.
9, by the design of charge and discharge time or the design of preset time of latch units, to ensure to close after oscillator still
It is able to maintain that luminous driving signal is the normal discrimination and detecting of latch signal, and the low consumption for reaching oscillator is electrically operated.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (12)
1. a kind of tandem type LED light string of low power consumption is, characterized by comprising: a female lamp string and at least one sub- lamp
String；
Mother's lamp string includes:
One LED light string has multiple light emitting diode modules；
One output control switch couples the LED light string；And
One controller, couples the output control switch, receives a carrier wave luminous signal, and by control the output control switch with
Multiple light emitting diode module is driven to carry out luminous；
At least one sub- lamp string cascades mother's lamp string, and each sub- lamp string includes:
One LED light string has multiple light emitting diode modules；
One output control switch couples the LED light string；And
One signal enhancement device couples the output control switch, receives the carrier wave luminous signal, and enhances the carrier wave luminous signal, leads to
Cross that control the output control switch luminous to drive multiple light emitting diode module to carry out；
Wherein, when the voltage of the carrier wave luminous signal is less than a low level voltage, it is low that each light emitting diode module enters one
Power modes.
2. the tandem type LED light string of low power consumption as described in claim 1, it is characterised in that:
Mother's lamp string also includes an out connector, the out connector have a positive voltage terminal, a negative voltage terminal and
One data terminal；And
The sub- lamp string also includes an input connector, which has two power pins and a data pin；
Wherein, which is respectively coupled to the positive voltage terminal and the negative voltage terminal, and the data pin couples the money
Expect terminal.
3. the tandem type LED light string of low power consumption as claimed in claim 2, which is characterized in that the sub- lamp string also includes
One out connector couples the input connector of another sub- lamp string.
4. the tandem type LED light string of low power consumption as described in claim 1, which is characterized in that the signal enhancement device packet
Contain:
One control switch；And
One power adapter couples the control switch；
Wherein, when the control switch is connected, which receives the carrier wave luminous signal, and enhances the luminous letter of the carrier wave
Number.
5. the tandem type LED light string of low power consumption as described in claim 1, which is characterized in that data terminal coupling
In each light emitting diode module most between latter two.
6. the tandem type LED light string of low power consumption as described in claim 1, which is characterized in that each light-emitting diodes
Pipe die group includes a voltage comparison unit；
Wherein, when the voltage of the carrier wave luminous signal is less than the low level voltage, one control signal of voltage comparison unit output
Control the low power consumption mode that each light emitting diode module enters dormant state.
7. the tandem type LED light string of low power consumption as described in claim 1, which is characterized in that each light-emitting diodes
Pipe die group includes a current sense unit；
Wherein, when the voltage of the carrier wave luminous signal is less than the low level voltage, one control signal of current sense unit output
Control the low power consumption mode that each light emitting diode module enters power save mode.
8. the tandem type LED light string of low power consumption as claimed in claim 7, which is characterized in that into power save mode
In a time interval after the low power consumption mode, each light emitting diode module carries out the operation of signal detection and identification；Knot
After the beam time interval, which controls the low power consumption mode that each light emitting diode module enters dormant state.
9. the tandem type LED light string of low power consumption as claimed in claim 7, which is characterized in that each light-emitting diodes
Pipe die group also includes an oscillator, and in the low power consumption mode of power save mode, which receives the control signal, and the vibration
It swings device to control by the control signal, oscillatory work is carried out with low-power.
10. the tandem type LED light string of low power consumption as claimed in claim 7, which is characterized in that each described luminous two
Pole pipe mould group also includes a latch units and an oscillator, in the low power consumption mode of power save mode, the latch units with should
Oscillator receives the control signal, and the oscillator is controlled by the control signal, and stop oscillation work, which passes through
Control signal control, provides Clocked operation.
11. the tandem type LED light string of low power consumption as claimed in claim 10, which is characterized in that the latch units are
A charge-discharge circuit comprising a resistance and a capacitor.
12. the tandem type LED light string of low power consumption as claimed in claim 10, which is characterized in that the latch units are
One timing circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520934.0A CN110278632B (en) | 2019-06-17 | 2019-06-17 | Low-power-consumption cascade light-emitting diode lamp string |
| US16/526,052 US10791604B2 (en) | 2018-12-28 | 2019-07-30 | Cascading LED lights with low power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520934.0A CN110278632B (en) | 2019-06-17 | 2019-06-17 | Low-power-consumption cascade light-emitting diode lamp string |
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| CN110278632B CN110278632B (en) | 2021-04-20 |
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| TWI724917B (en) * | 2020-06-10 | 2021-04-11 | 矽誠科技股份有限公司 | Light-emitting diode module and light-emitting diode lamp string with sleep mode |
| CN113015303A (en) * | 2019-12-20 | 2021-06-22 | 矽诚科技股份有限公司 | Carrier controlled LED lamp with quick discharge and lamp string thereof |
| CN113811041A (en) * | 2020-06-16 | 2021-12-17 | 矽诚科技股份有限公司 | Light-emitting diode module with sleep mode and light-emitting diode lamp string |
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| CN110278632B (en) | 2021-04-20 |
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