CN104427682A - On-line digital dimmer, LED lighting device, dimming device and dimming method - Google Patents
On-line digital dimmer, LED lighting device, dimming device and dimming method Download PDFInfo
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- CN104427682A CN104427682A CN201310369860.8A CN201310369860A CN104427682A CN 104427682 A CN104427682 A CN 104427682A CN 201310369860 A CN201310369860 A CN 201310369860A CN 104427682 A CN104427682 A CN 104427682A
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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
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Abstract
The invention relates to an on-line digital dimmer, an LED lighting device, a dimming device and a dimming method for adjusting brightness or color temperature and color. The on-line digital dimmer and the LED lighting device are connected in series on a power supply loop of an alternating current power supply, the on-line digital dimmer includes a switching circuit, a trigger circuit and a dimming control circuit, the dimming control circuit encodes a dimming signal of adjusting brightness or color temperature and color into digital dimming command formed by a plurality of zero bits and one bits, the difference of triggering time of the trigger circuit is controlled according to the difference of the zero bits and the one bits that the digital dimming command contains, so that the switching circuit generates encoded power supplies with difference conduction percentages to be transmitted to the LED lighting device, then the digital dimming command is reduced and solved through the LED lighting device, thereby adjusting the light emission brightness or color temperature and color of the LED lighting device accordingly, and achieving the purpose of colorful illumination and dimming of an LED.
Description
[technical field]
The present invention is about the online digital dimming technology of one, refer to that one utilizes online digital light adjuster modulation to go out the code power of different ON time especially, this code power is except transmitting the function of original AC power, also the code power having different conducting percentage by this changes into as specific digital signal, controls LED light device accordingly and produces required brightness or colour temperature and color.
[background technology]
With reference to shown in Figure 13, disclose tradition at the circuit diagram of line dimmer in time using, " online light modulation " means light fixture 91 and and is series at same mains supply 93 at line dimmer 92 and forms a series loop.Should be generally adopt the operational design of knob interface at line dimmer 92, when user rotate adjustment should at line dimmer 92 time, directly can adjust the luminosity of this light fixture 91.
Should at the detailed circuit of line dimmer 92 as shown in figure 14, main composition assembly comprises interchange silicon control thyristor (TRIAC) 921, variable resistor 922 and a bidirectional diode 923 (DIAC).Two output T1, T2 of this interchange silicon control thyristor 921 are connected in series in the loop, and its trigger end G system connects this variable resistor 922 via this bidirectional diode 923.When user rotate adjustment should at line dimmer 92 time, it is the equal of the resistance value changing this variable resistor 922, change the trigger voltage on this its trigger end of interchange silicon control thyristor 921 G by this, order exchanges silicon control thyristor 921 and transfers conducting state in different trigger angle to by cut-off state.
As shown in figure 15, system represents that user adjusts variable resistor 922 when obtaining different resistance values, this interchange silicon control thyristor 921 is in different trigger angle conducting, therefore can produce the string wave voltage with different conducting percentage on light fixture 91, the waveform of the string wave voltage of these different conducting percentages to be illustrated with 90%, 70%, 50% and 30% at this and is represented.When light fixture 91 receives the conducting voltage of 90%, 70%, 50% and 30%, will produce the corresponding brightness being proportional to this conducting voltage, conducting percentage is higher, then the brightness of light fixture 91 is higher, and vice versa.
Only the technology of the online light modulation of aforementioned conventional is when practical application, still has following shortcoming:
1, the online light adjusting circuit of tradition has a definite limitation to load, namely used light fixture 91 necessarily conventional bulb, so just can produce corresponding luminosity according to the string wave voltage of different conducting percentage.If using LED as load, this LED can produce the problems such as brightness shakiness, flicker, when conducting percentage is lower than time to a certain degree, and such as less than 30%, this LED even can lose efficacy and cannot carry out light modulation.
2, use LED to be just like market mainstream trend as lighting apparatus, LED is brightness-adjustable not only, also adjustable color temperature and color; But the online light regulating technology of above-mentioned tradition cannot reach the function of adjustment colour temperature and color.
[summary of the invention]
One of the present invention object is to provide one " online digital light adjuster ", the conducting voltage percentage size of AC power is digitized into 1 and 0, a digital dimming instruction is consisted of again by a plurality of 1 and 0, and this digital dimming instruction is sent to LED light device, brightness, colour temperature and the color of setting LED light device.
For reaching aforementioned object, this online digital light adjuster and an AC power and a LED light device are connected in series and form a current supply circuit, and this online digital light adjuster comprises:
One switching circuit is be connected on this current supply circuit;
One circuits for triggering are connect this switching circuit for triggering this switching circuit conducting;
One adjusting control circuit, connect these circuits for triggering to control the triggered time of these circuits for triggering, wherein, adjustment brightness or one of colour temperature and color dim signal are encoded into the digital dimming instruction formed with a plurality of 0 and 1 by this adjusting control circuit system, again contained by this digital dimming instruction 0 from 1 different and control the different of this triggered time, the code power making this switching circuit produce the different conducting percentage of tool is passed to this LED light device.
By aforementioned online digital light adjuster, can be different according to the position of 0 or 1, the ON time controlling each half-wave of AC power sine wave is different, therefore the AC power of the different conducting percentage of continuous print one section is except reaching the original function transmitting AC power, also specific digital dimming instruction is converted into by the different conducting percentage status contained by AC power, if " 0101xxxxxx " is for adjusting luminance instructions, wherein front four Ge Wei 0101 presentation directives kinds, rear six position x 0 or 1 are expressed as brightness value; Again or as " 0110xxxxxx " be color-temperature regulating and color instruction, wherein front four Ge Wei 0110 presentation directives kinds, rear six position x 0 or 1 are expressed as colour temperature and color value, the purposes of this digital dimming instruction can be used for adjusting the brightness of LED, colour temperature and color, solves traditional LED simulation and cannot adjust 0 ~ 30% brightness at line dimmer and cannot adjust the shortcoming of colour temperature and color.
Another object of the present invention is to provide one " LED light device ", and aforementioned online digital light adjuster can be coordinated jointly to apply, and this LED light device comprises a tunable optical power supply and at least one luminescence unit, and wherein this tunable optical power supply comprises:
One power supply and signal input part, for the online digital light adjuster of connection, to receive this online this AC power of digital light adjuster output or code power of this continuous a plurality of different conducting percentage;
One power supply unit, receives this AC power or this code power via power supply and signal input part, and produces a DC power supply accordingly, the DC power supply that supply LED light device is required;
One light source driving circuit is receive this DC power supply via power supply unit, and then drives this luminescence unit luminous;
One light modulation decoder, is receive this code power, and captures the ON time percentage of this code power, and then according to this ON time percentage, be reduced into 0 or 1, then be reduced to a digital dimming instruction by a plurality of 0 or 1;
This control circuit is that the digital dimming instruction exported according to this light modulation decoder produces a control signal and reaches this light source driving circuit, makes this light source driving circuit drive this luminescence unit to present corresponding variations in light effect according to this control signal.
This LED light device is after receiving the code power sent by online digital light adjuster, also decoding of this code power can being reduced goes out central digital dimming instruction, with according to this digital dimming instruction control LED component produce specified by brightness of illumination, or produce specified by colour temperature and color.
The another object of the present invention can provide a kind of " light modulating device ", and this light modulating device includes aforementioned " online digital light adjuster " and a tunable optical power supply, and this tunable optical power supply has:
One power supply and signal input part, for this online digital light adjuster of connection, to receive this AC power or this code power of this online digital light adjuster output;
One power supply unit, receives this AC power or this code power via power supply and signal input part, and produces a DC power supply accordingly;
One light source driving circuit is receive this DC power supply via power supply unit, and then output driving current;
One light modulation decoder, is receive this code power, and captures the ON time percentage of this code power, and then according to this ON time percentage, be reduced into 0 or 1, then be reduced to a digital dimming instruction in a plurality of 0 or 1;
One control circuit, is that the digital dimming instruction exported according to this light modulation decoder produces a control signal and reaches this light source driving circuit, makes this light source driving circuit according to this control signal drive current.
The present invention forms a light modulating device jointly by this online digital light adjuster and tunable optical power supply, can be applicable to control the brightness of illumination of luminescence unit (as the luminescence unit that forms of the institute such as LED, OLED, PLED) needed for generation and color change.
An object system again of the present invention provides a kind of " method of adjustment brightness or colour temperature and color ", the online digital light adjuster that system's application is described above, wherein, this online digital light adjuster comprises the light modulation setting apparatus flying shuttle knob formation further, and this light-dimming method comprises following key step:
Judge that this flies shuttle knob and whether is pressed, if so, then perform light-modulating mode and switch, be that the first current light-modulating mode is switched to the second light-modulating mode, or the second current light-modulating mode is switched to the first light-modulating mode;
Judge that this flies shuttle knob and whether is rotated by adjustment, if so, judge whether current light-modulating mode is the first light-modulating mode again, if be in the first light-modulating mode then produce one first dimming commands; If be in the second light-modulating mode, then produce one second dimming commands;
The first dimming commands that transmission produces or the second dimming commands are to LED light device, and this LED light device system and this online digital light adjuster are connected on this current supply circuit.
User can simply select required light-modulating mode according to preceding method, such as, when the first light-modulating mode is for adjusting brightness, namely second light-modulating mode can be used for adjustment colour temperature and color, vice versa, such as, when the first light-modulating mode is for adjusting colour temperature and color, namely the second light-modulating mode can be used for adjusting brightness.Under the first/the second selected light-modulating mode, produce the first/the second corresponding dimming commands make online digital light adjuster modulation AC power and produce the code power of different conducting percentage.
An object again of the present invention can provide a kind of " method of adjustment brightness or colour temperature and color ", the online digital light adjuster that system's application is described above, wherein, this online digital light adjuster comprises the light modulation setting apparatus formed with variable resistor further, and this light-dimming method comprises following key step:
This online digital light adjuster initial condition is one first light-modulating mode and judges whether this variable resistor is rotated, and if not, continues to remain on initial condition, and if so, online digital light adjuster leaves initial condition and exports one first dimming commands;
After this online digital light adjuster leaves initial condition, if variable resistor continues to be rotated, online digital light adjuster continues output one first dimming commands; Do not rotated if this variable resistor continues one section of Preset Time, then switch this digital light adjuster and perform at one second light-modulating mode;
Under the second light-modulating mode, judge whether this variable resistor is rotated, if so, this light modulation setting apparatus exports one second dimming commands, is not rotated, then switch this digital light adjuster and get back to initial condition if this variable resistor continues one section of Preset Time;
The first produced dimming commands or the second dimming commands are sent to LED light device, and this LED light device system and this online digital light adjuster are connected on same current supply circuit.
Utilize aforementioned light-dimming method, user can operate this variable resistor equally and select required light-modulating mode, such as, when the first light-modulating mode is for adjusting brightness, namely second light-modulating mode can be used for adjustment colour temperature and color, vice versa, such as, when the first light-modulating mode is for adjusting colour temperature and color, namely the second light-modulating mode can be used for adjusting brightness.Under the first/the second selected light-modulating mode, produce the first/the second corresponding dimming commands, the dimming commands produced makes online digital light adjuster just can modulation AC power and produce the code power of different conducting percentage.
[accompanying drawing explanation]
Figure 1A: the present invention's online digital light adjuster first preferred embodiment circuit diagram.
Figure 1B: another preferred embodiment circuit diagram of the circuits for triggering in the online digital light adjuster of the present invention.
Fig. 1 C: the circuit diagram that the electric capacity in Figure 1A circuit of the present invention represents with an equivalent resistance
Fig. 2: utilizing the online digital light adjuster of the present invention to produce conducting percentage is individually the code power of 50%, 90% and the oscillogram of an original AC power.
Fig. 3: the present invention's online digital light adjuster second preferred embodiment circuit block diagram.
Fig. 4: the present invention's online digital light adjuster second preferred embodiment and connection one LED light device detailed circuit diagram.
Fig. 5: the present invention's online digital light adjuster second preferred embodiment, simplifies the circuit diagram of voltage acquisition circuitry.
Fig. 6 A: the light modulation setting apparatus of the present invention selects the circuit diagram of a variable resistor.
Fig. 6 B: the light modulation setting apparatus of the present invention selects the circuit diagram of an infrared receiver.
Fig. 6 C: the circuit diagram that the light modulation setting apparatus of the present invention selects to fly shuttle knob.
Fig. 6 D: the light modulation setting apparatus of the present invention selects the circuit diagram of a RS85 connector.
Fig. 7: when the online digital light adjuster of the present invention does not transmit digital dimming instruction, the relative voltage waveforms of this LED light device.
Fig. 8: when the online digital light adjuster of the present invention transmits digital dimming instruction, the relative voltage waveforms of this LED light device.
Fig. 9 A: utilize the present invention to adjust and there is its brightness curve of LED light device figure that is cold, the double-colored light source of warm colour.
Fig. 9 B: utilize the present invention to adjust and there is its colour temperature curve chart of LED light device that is cold, the double-colored light source of warm colour.
Figure 10 A: utilize the present invention to adjust and there is its brightness curve of R, G, B three-color light source figure.
Figure 10 B: utilize the present invention to adjust and there is its colour curve of R, G, B three-color light source figure.
Figure 11: when the present invention is using variable resistor as light modulation setting apparatus, the flow chart of switch light modulation pattern.
Figure 12: when the present invention is to fly shuttle knob as light modulation setting apparatus, the flow chart of switch light modulation pattern.
Figure 13: tradition is at the circuit block diagram of line dimmer in time using.
Figure 14: tradition is in the detailed circuit diagram of line dimmer.
Figure 15: utilize tradition to produce the voltage oscillogram of different angle of flow at line dimmer.
Reference numeral illustrates:
1 online numerical digit dimmer
11 switching circuit 12 circuits for triggering
121 first resistance 122 second resistance
123 electric capacity 123A resistance
124 bidirectional diode 13 adjusting control circuits
131 switch module 132 microprocessors
14 voltage acquisition circuitry 141 voltage acquisition devices
142 rectifier diode 142A rectifier diodes
143 rectifier diode 143A rectifier diodes
144 electric capacity of voltage regulation 15 light modulation setting apparatus
16 bridge rectifiers
2LED lighting device
20 tunable optical power supply 21 power supply units
210 bridge rectifier 211 voltage stabilizing circuits
22 light source driving circuit 23 light modulation decoders
24 control circuit 30 luminescence units
100 power supplys and signal output part 200 power supply and signal input part
AC AC power
91 light fixtures 92 are at line dimmer
921 exchange silicon control thyristor 922 variable resistor
923 bidirectional diode 93 mains supplies
[embodiment]
With reference to shown in Figure 1A, for the circuit diagram of the present invention's online digital light adjuster 1 first preferred embodiment, this online digital light adjuster 1 is jointly connected with a LED light device 2 and an AC power AC and is formed an electric power loop, user can utilize this online digital light adjuster 1 to transmit digital dimming instruction to this LED light device 2, and this digital dimming instruction is in order to change the brightness of LED light device 2, colour temperature and color etc.
According to first preferred embodiment of Figure 1A, the basic module of this online digital light adjuster 1 comprises switching circuit 11, circuits for triggering 12 and an adjusting control circuit 13.
The two ends of this switching circuit 11 connect this LED light device 2 and this AC power AC respectively, and change into as conducting state according to the triggering signal that these circuits for triggering 12 export.This switching circuit 11 optional from exchange silicon control thyristor (TRIAC), thyristor (SCR), solid-state relay (SSR), the assembly such as igbt (IGBT) one of them.If wherein select thyristor (SCR), need first to use bridge rectifier that AC power rectification is processed for transferring to thyristor (SCR) after full-wave rectification DC power supply again.The present invention for convenience of description, all explains to exchange silicon control thyristor (TRIAC).
These circuits for triggering 12 comprise one first resistance 121,1 second resistance 122, one electric capacity 123 and a bidirectional diode 124, this the first resistance 121, second resistance 122 and electric capacity 123 three are series connection, and this bidirectional diode 124 is connected between this switching circuit 11 and electric capacity 123.
This adjusting control circuit 13 comprises switch module 131 and a microprocessor 132.This switch module 131 is connected in parallel on the two ends of this second resistance 122, and output one switching signal is responsible for by this microprocessor 132, produces opened/closed action in order to control this switch module 131.
When switch module 131 switches in the state of " opening (OPEN) " according to this switching signal, the voltage at these circuits for triggering 12 two ends is by the first resistance 121, second resistance 122 and electric capacity 123 three dividing potential drop V
12=V
r1+ V
r2+ V
cbecause have portion voltage by the first resistance 121 and the second resistance 122 dividing potential drop, the voltage causing this electric capacity 123 to be got is less, therefore, this electric capacity 123 will be set up the time that the trigger voltage being enough to this switching circuit 11 of conducting needs relatively to grow, namely the voltage of AC power AC must be edged up to a relatively high level through one period of long period, and electric capacity 123 just can set up this trigger voltage.The waveform (A) of such as Fig. 2 represents AC power AC, when switch module 131 is opened, the time that each half-wave all needs t1 just can triggered switch circuit 11 conducting, such as appropriateness can select the first resistance 121, second resistance 122 and electric capacity 123, allow circuits for triggering 11 produce voltage that conducting percentage is 50%, its waveform is as shown in Fig. 2 (B).
When switch module 131 switches in the state of " closed (CLOSED) " according to this switching signal, this second resistance 122 is shorted and without effect, the voltage at these circuits for triggering 12 two ends is only by the first resistance 121 and electric capacity 123 dividing potential drop V
12=V
r1+ V
c, can select the first resistance 121 and the electric capacity 123 of appropriateness allow the voltage V at the first resistance 121 two ends
r1relatively little, the voltage V at electric capacity 123 two ends
crelatively large, allow voltage drop on electric capacity 123 as far as possible, therefore, this electric capacity 123 will be set up the time that the trigger voltage needs that are enough to this switching circuit 11 of conducting are relatively short, and namely the voltage of AC power AC only need can set up this trigger voltage through the short period on electric capacity 123.The waveform (C) of such as Fig. 2 represents this switch module 131 when closing, and each half-wave only needs the shorter t2 time, can triggered switch circuit 11 conducting, and such as producing conducting percentage is the voltage of 90%.
Aforementioned conducting percentage is 50%, 90%, namely this 50% expression 0,90% available represents 1, and therefore this AC power is except transmitting except the function of original AC power, also transmit the digital signal of 0,1 by this different conducting percentage, claim this power supply including digital signal to be code power.For the AC power of 60Hz, each half-wave is the equal of transmission position (Bit), therefore transmission speed is 120bps.Only the present invention does not limit each half-wave and only represents a digit order number, also a plurality of position can be encoded into, such as when design generation four kinds of conducting percentages are 30%, 50%, 70%, 90% different coding power supply time, respectively represent 00 respectively, 01, 10, 11 4 group codings, then namely each half-wave represents two digit order numbers, with reference to shown in Figure 1B, second resistance R2 can be changed to four different resistance R21 ~ R24 in parallel, each resistance is respectively connected an interrupteur SW 1 ~ SW4, when resistance R21 conducting allows conducting percentage be 30%, when R22 conducting allows conducting percentage be 50%, when resistance R23 conducting allows conducting percentage be 70%, when resistance R24 conducting allows conducting percentage be 90%, just can produce four kinds of conducting percentages is 30%, 50%, 70%, the different coding power supply of 90%.When the code power of different conducting percentage is sent to this LED light device 2, this LED light device 2 according to the digital signal of the rule reduction 0,1 of above-mentioned code power, then according to a plurality of 0,1 digital signal, can restore this digital dimming instruction.LED light device 2 is again according to this digital dimming instruction setting brightness, colour temperature and color etc.
Illustrate that how reaching conducting percentage is 90%, 50% with simple formula below.In order to allow formula more concise explanation, the electric capacity 123 of Figure 1A, the resistance 123A of Fig. 1 C can be changed into, and ignore the pressure drop of LED light device 2, now can calculate conducting percentage with the female law in Europe.If conducting percentage 90%, that is the angle θ of sinusoidal wave half-wave Sin θ is from conducting when 20 ~ 180 degree.For civil power 220V, when θ=20 degree, AC line voltage is=220Vx1.414xSin θ=106.4V, and this 106.4V only drops on above R1 and R3 because as aforementioned switches assembly 131 be closed, therefore R2 short circuit does not have voltage.Being used for triggering this voltage needed for bidirectional diode 124 conducting as another is 30V, so 30V=106.4V × R3/ (R1+R3), supposes R1=100K Ω, can obtain R3=39.3K Ω.If now conducting percentage 50%, for civil power 220V, that is sinusoidal wave half-wave Sin θ is from conducting when 90 ~ 180 degree.When Sin θ=90 degree, AC line voltage is=220V × 1.414 × Sin θ=311V, this 311V drops on R1, above R2 and R3, switch module 131 is that the therefore R2 opened has voltage, triggering bidirectional diode 124 conducting voltage as another is 30V, so 30V=311V × R3/ (R1+R2+R3), as above known R1=100K Ω, R3=39.3K Ω can obtain R2=268.1K Ω
As above-mentioned example calculation, can know that resistor or capacitor can be selected arbitrarily, reach the object that conducting percentage is 90%, 50%, bidirectional diode 124 equally also can be allowed to be placed between the second resistance 122 and resistance 123A, also can be placed between the first resistance 121 and the second resistance 122, as long as change the formula of the female law in Europe, relative R1 can be calculated, the value of R2, R3 meets the object that conducting percentage is 90%, 50%.Same general triggering bidirectional diode 124 conducting voltage is 30V, also can select other electronic building brick to replace, as long as allowing overall circuits for triggering 12 meet conducting percentage is 90%, 50%.Can to understand that will to design conducting percentage be 90%, 50% be a nothing the matter by above-mentioned, but valuable point of the present invention is, after conducting percentage figures, except can transmitting original AC power, and can also transmitting digital dimming commands.
Except the first above-mentioned preferred embodiment, be the detailed circuit diagram of corresponding earlier figures 3 second preferred embodiment with reference to the second preferred embodiment shown in figure 3 and Fig. 4.Under the basis of the first preferred embodiment, this online digital light adjuster 1 comprises voltage acquisition circuitry 14 and a light modulation setting apparatus 15 further.
This voltage acquisition circuitry 14 is cascaded with switching circuit 11, for obtaining the change of this AC power and feedbacking to this adjusting control circuit 13, makes adjusting control circuit 13 when control switch assembly 131 and can do synchronization action with AC power.The both end voltage of the voltage acquisition device 141 of this voltage acquisition circuitry 14 is still the alternating voltage of tool positive-negative half-cycle, after being rectified into full-wave direct current voltage via rectifier diode 142, when AC power Sin θ=0 degree, the voltage of AC power output is 0V, and now rectifier diode 142 exports also is 0V.When AC power Sin θ=90 degree, the magnitude of voltage of AC power output is the highest, and now rectifier diode 142 exports also is the highest.Therefore microprocessor 132 can by the output of rectifier diode 142, detect the angle at that time of AC power Sin θ, the action that aforementioned switches assembly 131 carries out closure or openness is controlled, so that circuits for triggering 12 can at tram triggered switch circuit 11 according to this at correct time point.
This another purposes of voltage acquisition circuitry 14 is: as the use of small power supply VCC, because the adjusting control circuit of this online digital light adjuster 1 13 and light modulation setting apparatus 15, a small power supply (such as 0.2 watt) is needed during startup, this small power supply can take from the both end voltage of the voltage acquisition device 141 of voltage acquisition circuitry 14, after being rectified into direct voltage via another rectifier diode 143, again by electric capacity of voltage regulation 144 voltage stabilizing, become the small power supply VCC that online digital light adjuster 1 is inner required.
The voltage acquisition device 141 of this voltage acquisition circuitry 14 is connected by two reverse zener diode ZENER formed.Such as wish that the VCC obtained is 3.3V, the zener diode of 2.6V can be used.Now voltage acquisition device 141 both end voltage is the VCC that namely 0.7V that reverse 2.6V adds forward can obtain 3.3V.Certain reality also need to consider when using pressure drop on the pressure drop of rectifier diode 143 and diode can along with the size of current flow through the factor such as change.From previous example, voltage acquisition device 141, as long as can obtain a small power supply, is therefore not limited to only with zener diode, also can by the rectifier diode of this series connection after many positive and negative series aiding connections of rectifier diode positive and negative reverse parallel connection and obtaining again.
Moreover for simplifying voltage acquisition circuitry 14, can circuit as shown in Figure 5, a bridge rectifier 16 can be installed additional by digital light adjuster 1 inlet point online, allow AC power via becoming a full-wave rectification DC power supply after bridge rectifier 16, this full-wave rectification DC power supply one end is connected to switching circuit 11, and the other end is connected to voltage acquisition circuitry 14.Now because the power supply entering voltage acquisition circuitry 14 has been the full-wave rectification DC power supply be transformed into by AC power, therefore can simplify voltage acquisition device 141 is that single ZENER diode gets final product (or using many positive and negative series aiding connections of rectifier diode), moreover also can simplify the rectifier diode 142,143 be made up of 4 diodes simultaneously, all can be simplified to single rectifier diode 142A and 143A.Moreover the switching circuit 11 of Fig. 5 can be selected interchange silicon control thyristor (TRIAC) or directly select thyristor (SCR) (not shown).Like this will have the function simplifying circuit design.
This light modulation setting apparatus 15 is to provide a user interface allows user to operate light modulation, and is detected by adjusting control circuit 13 and produce corresponding digital dimming instruction, in order to control the brightness of this LED light device 2, colour temperature and color.This light modulation setting apparatus 15 can be selected from variable resistor (as shown in Figure 6A), infrared receiver (as shown in Figure 6B), fly shuttle knob (Rotary Encoder) (as shown in Figure 6 C), RF receiver, digitally addressed lamp control interface (Digital Address Lighting Interface, DALI) or meet RS485 (as shown in Figure 6 D), RS422, RS232 standard attachment unit interface etc. one of them.
Shown in figure 4, be the detailed circuit diagram of corresponding earlier figures 3 second preferred embodiment, the central detailed circuit also including the first preferred embodiment.This switching circuit 11 was introduced above with circuits for triggering 12, do not repeat them here, switch module 131 in this adjusting control circuit 13 can utilize a relay to form, this relay has a solenoid, altogether contact, a normally closed contact, a normal opened contact and an a movable armature, wherein, this common contact and normally closed contact are externally connected to the two ends of this second resistance 122 respectively, and whether this movable armature is energized and this common contact is switched to normally closed contact or normal opened contact according to solenoid.Such as when the solenoid is not energized, common contact is connected to normally closed contact by this movable armature, and switch module 131 is the equal of in " closing " state; When after electromagnetic wire energising, common contact can be switched to normal opened contact by this movable armature, makes switch module 131 be the equal of in " unlatching " state; And this solenoid energising with otherwise be controlled by microprocessor 132.The present embodiment only illustrates, the normal opened contact of this relay, normally closed contact also can be exchanged mutually, and the device forming this switch module 131 is not limited to relay equally, also can come with assemblies such as optical coupler (Photo Couple) reed relays (Reed Relay), if wherein use optical coupler (Photo Couple) that power saving and the little function of volume can also be reached, as aforementioned known small power supply acquired by voltage acquisition circuitry 14, its power supply ability is very little, therefore need very to focus on power saving during actual use, now optical coupler (Photo Couple) is good selection.
As shown in Figure 4, this online digital light adjuster 1 can control the LED light device 2 of one or more parallel connection, conveniently correspondingly with LED light device 2 to connect, online digital light adjuster 1 can arrange a power supply and signal output part 100, this power supply and signal output part 100 connect AC power AC and this switching circuit 11, its actual interface can be female type, line-outgoing type or the base such as power end minor, E27, E12, E14, E17, E26, E39, E40, MR11, MR16, GU10, B22, T5, T8, G24 one of them.
And the present invention's correspondence connect aforementioned online digital light adjuster 1 the LED light device 2 that uses mainly comprise a tunable optical power supply 20 and at least one luminescence unit 30, wherein, this tunable optical power supply 20 comprises a power supply and signal input part 200, power supply unit 21, light source driving circuit 22, light modulation decoder 23 and a control circuit 24.
This power supply and signal input part 200 are for the power supply and the signal output part 100 that connect this online digital light adjuster 1, and this power supply and signal output part 100 are mated in the interface system of this power supply and signal input part 200, such as the connecting interface such as plug/socket form, line-outgoing type, power end minor, E27, E12, E14, E17, E26, E39, E40, MR11, MR16, GU10, B22, T5, T8, G24 one of them etc., be generally female seat in power supply and its connecting interface of signal output part 100, and power supply and its connecting interface of signal input part 200 are male seat.
Aforementioned power source supply 21 is receive AC power by this online digital light adjuster 1 or code power via this power supply and signal input part 200, to produce for should the required DC power supply of LED light device 2, this power supply unit 21 can be made up of a bridge rectifier 210 and a voltage stabilizing circuit 211, voltage regulation capacitor (not shown) is had in this voltage stabilizing circuit 211, to facilitate code power when conducting 50% or 90% changes, the power supply of this LED light device 2 can be stablized unaffected.
Said light source drive circuit 22 is connect this power supply unit 21 to receive this DC power supply, and then output driving current is to luminescence unit 30.
Aforementioned light modulation decoder 23 is receive this code power via bridge rectifier 210 again via power supply and signal input part 200, and capture the ON time percentage of this code power, and then according to this ON time percentage, be reduced into 0 or 1, then be reduced to a digital dimming instruction by plural number 0 or 1.
The input of aforementioned control circuit 24 connects the digital dimming instruction that this light modulation decoder draws after decoding, and control signal to this light source driving circuit 22 according to digital dimming instruction generation one, this light source driving circuit 22 is made to drive luminescence unit 30 to produce the variation effects such as luminosity, colour temperature and the color of specifying according to this, therefore, luminescence unit 30 does not only have presenting of brightness, also can present colour temperature and the polynary variation effect of color according to the kind of digital dimming instruction difference.
Aforementioned luminescence unit 30 is connect this light source driving circuit 22 and be driven by it luminescence.This luminescence unit 30 can be made up of at least one LEDs light-emitting diode or at least one OLED Organic Light Emitting Diode or at least one PLED polymer LED, send the coloured light of different wave length, as Red Green Blue light and mixed light thereof, also can be blue light and add the white light that yellow fluorophor sends.Such as this LED light device 2 is intended changing colour temperature, and this luminescence unit 30 can use cold white (5500K) to form with the dual-colored LED light source of warm white (2700K).Such as this LED light device 2 is intended changing R, G, B color again, and this luminescence unit 30 can use ruddiness (R), green glow (G), formed with blue light (B) three-color LED light source.Such as this LED light device 2 intends only degree of lightening again, need not color-temperature regulating and color, and luminescence unit 30 only needs monochromatic source.
Coordinate with reference to figure 7, when this online digital light adjuster 1 does not transmit digital dimming instruction, switch module 131 is closed, second resistance 122 short circuit, suitable adjustment first resistance 121 and the numerical value of electric capacity 123 can be learnt by aforementioned, allow circuits for triggering 12 trigger as early as possible, allow AC power level off to 100% conducting as far as possible, generally can design in 90%, Fig. 7 for convenience of description for 100% conducting.LED light device 2 receives AC power from power supply and signal input part 200, and its waveform is as shown in (A).This AC power, after bridge rectifier 210 rectification, becomes the half-wave voltage shown in waveform (B), and the voltage after this rectification, by after voltage stabilizing circuit 211 voltage stabilizing, outputs to light source driving circuit 22, in order to drive luminescence unit 30.And light modulation decoder 23 is that after foundation rectification, Xie Code goes out the continuous square wave as shown in waveform (C), this continuous square wave is supplied to control circuit 24, this continuous square wave can be considered as continuous print 111111 ...
Coordinate with reference to figure 8, when this online digital light adjuster 1 starts to transmit digital dimming instruction, its initial bit can be designed to 0, is different from the continuous print 111111 of Fig. 7 ..., and there is certain default-length, such as 6.Also it can be 10 or 12, Fig. 7 and Fig. 8 is for 6, after LED light device 2 captures the 1st 0 from bridge rectifier 210, capture again continuous 5 positions totally 6 positions as digital dimming instruction, the code power received can have different conducting percentage, its waveform as shown in Fig. 8 (A), to transmit the digital signal of " 011001 ".This code power is after bridge rectifier 210 rectification, and each half-wave becomes the positive half wave voltage as shown in Fig. 8 (B), but still possesses different conducting percentage.It is and light modulation decoder 23 is that after foundation rectification, Xie Code goes out the Digital Square-Wave as shown in oscillogram 8 (C), wherein, corresponding that " Digital Square-Wave of 0 ＂ position has the less deration of signal, and corresponding " Digital Square-Wave of 1 ＂ position has the larger deration of signal.After the Digital Square-Wave that this plurality of width differs is supplied to control circuit 24, after namely this control circuit 24 parses digital dimming instruction, this control circuit 24 again driving light source drive circuit 22 adjusts the brightness of this luminescence unit 30, colour temperature and color.
Please refer to shown in Fig. 9 A, 9B, in a preferred embodiment, if the luminescence unit 30 of LED light device 2 comprises one group of cool colour light source (such as 5500K) and one group of warm colour light source (such as 2700K) simultaneously, operate the pattern of this light modulation setting apparatus 15 and execution according to user, the digital dimming instruction that this online digital light adjuster 1 produces can be used to adjustment brightness or colour temperature (CCT).Such as, when the pattern performed is brightness adjustment pattern, the digital dimming instruction produced can control brightness change, presents the dimming effect of linear change as shown in Figure 9 A with horizontal scale 0 to 100; When the pattern performed is colour temperature adjustment modes, as shown in oscillogram 9B, the digital dimming instruction produced is for adjusting colour temperature, the colour temperature curve of this cool colour light source is arrow A indication, the colour temperature curve of warm colour light source is arrow B indication, LED light device 2 is presented when horizontal scale 0 warm white (because warm colour light source presents 100% brightness, cool colour light source presents 0% brightness); Nature white (because warm colour light source and cool colour light source present 50% brightness) is presented when scale 50; Present when scale 100 cold white (because of warm colour 0% brightness, cool colour 100% brightness).
Please refer to shown in Figure 10 A, Figure 10 B, in a further preferred embodiment, if LED light device 2 comprises R, G, B three-color light source simultaneously, the pattern of this light modulation setting apparatus 15 and execution is operated according to user, the digital dimming instruction that this online digital light adjuster 1 produces can be used to adjust brightness, or color and changes in temperature white tone.Such as, when the pattern performed is brightness adjustment pattern, the digital dimming instruction produced can control brightness change presents linear change as shown in Figure 10 A dimming effect with horizontal scale 0 to 100, when the pattern performed is color adjustment modes, as shown in Figure 10 B, the digital dimming instruction produced is for adjusting color, wherein, red light source, the change of green light source and blue-light source is respectively with arrow R, arrow G, arrow B represents, LED light device 2 is made to present redness (now G when horizontal scale 0, B is 0) after R present green (now R when decline G rises to horizontal scale 25 gradually gradually, B is 0), in like manner horizontal scale 50 presents blueness, horizontal scale 75 presents pink (now R, B is 100%), when having arrived horizontal scale 90 to 100, R and G brightness can be made to be 100% constant, B is made gradually to rise, can by R, G, B three-color light source simulates the white variation effect of warm Bai Zhileng.In practice with Fig. 9 B use cold white and warm white double-colored light source simulate the white effect of warm Bai Zhileng be better than with Figure 10 B by R, G, B three-color light source simulate the white effect of warm Bai Zhileng.
Light modulation of the present invention has two large functions, and Section 1 is adjustment brightness, and Section 2 is adjustment colour temperature and color, in this explanation Section 2 adjustment colour temperature wherein and the part of color.Online digital light adjuster 1 sends same adjustment colour temperature and the digital dimming instruction of color, if now the luminescence unit 30 of LED light device 2 is that cold white and warm white double-colored light source formed, LED light device 2 will do the white change of warm Bai Yuleng according to the effect of Fig. 9 B.If if but luminescence unit 30 R, G, B three-color light source of LED light device 2 time, LED light device 2 will do the change of R, G, B color and the white change of the warm Bai Yuleng of final stage R, G, B simulation according to the effect of Figure 10 B.Although the LED light device 2 of therefore the present invention receives the digital dimming instruction of adjustment colour temperature and color equally, LED light device 2 can adjust colour temperature or adjustment color according to the difference of itself luminescence unit 30.
In like manner, if the luminescence unit 30 of LED light device 2 is only monochromatic source, not cold white and warm white source, also during non-rgb light source, LED light device 2 only can accept the digital dimming instruction adjusting brightness, and need not comprehend the digital dimming instruction of adjustment colour temperature and color.The LED light device 2 of monochrome like this is in practical application, also significantly improve tradition and produce the problems such as brightness shakiness, flicker at line dimmer when doing LED light modulation, even lower than time to a certain degree, such as less than 30%, this LED even can lose efficacy, and cannot carry out the problem of light modulation completely.
According to introducing explanation above, user can operate this light modulation setting apparatus 15 and determine for performing which kind of light-modulating mode, to variable resistor be utilized to illustrate how to enable different patterns respectively from the light modulation setting apparatus 15 flying shuttle knob formation below, to set brightness or to set colour temperature and color.
As shown in figure 11, first illustrate using variable resistor as light modulation setting apparatus 15.When online digital light adjuster 1 starts operation, this online digital light adjuster 1 is made to enter an initial condition (S100), in this initial condition, this online digital light adjuster 1 enters one first light-modulating mode (S101) and judges whether this variable resistor is rotated (S102), if variable resistor is not rotated, continue to remain on this initial condition, rotated if variable resistor has, this online digital light adjuster 1 leaves initial condition and exports one first dimming commands (S103); Whether continue this variable resistor of detecting after online digital light adjuster 1 leaves initial condition has continuation to be rotated (S104), rotated if still continue, continue to export this first dimming commands (S103), when variable resistor is not rotated, then judge whether that having continued one section of Preset Time (as 3 seconds) is not rotated (S105) more further.When exceeding this Preset Time, variable resistor is not rotated, switching this digital light adjuster 1 performs at one second light-modulating mode (S106), under the second light-modulating mode, start to detect this variable resistor equally whether to have and rotated (S107), if detect variable resistor to be rotated, this adjusting control circuit 13 sends the second dimming commands (S108), otherwise, when variable resistor is not rotated, then judge whether that having continued one section of Preset Time (as 3 seconds) is not rotated (S109) more further, when exceeding this Preset Time, variable resistor is not rotated, then revert to the initial condition (S100) when digital light adjuster 1 starts operation.
When aforementioned first light-modulating mode is brightness adjustment pattern, representing this second light-modulating mode is colour temperature and color adjustment modes, and the first corresponding dimming commands is the dimming commands of brightness, and the second dimming commands is the dimming commands of colour temperature and color.Only the first light-modulating mode and the second light-modulating mode also can be exchanged mutually.
And facilitate resolution to be at the first light-modulating mode or the second light-modulating mode to allow user, an indicator light (not shown) can be set on this online digital light adjuster 1, the such as indicator light interval scale that do not work is in the first light-modulating mode, and the bright interval scale of indicator light is in the second light-modulating mode.
As shown in figure 12, illustrate to fly shuttle knob as light modulation setting apparatus 15.When online digital light adjuster 1 starts operation, namely judge that this flies shuttle knob and whether is pressed (S111), if be pressed, switch current light-modulating mode (S112), the first/the second namely original light-modulating mode can switch to the second/the first light-modulating mode because of pressing.Namely light-modulating mode is returned to the step of beginning after switching; If fly shuttle knob not to be pressed, then judge whether fly shuttle knob has by left rotation and right rotation (S113) again, if do not rotated, then represent that user does not carry out any operation, rotated if having, to judge whether current light-modulating mode is the first light-modulating mode (S114) again, if be in the first light-modulating mode then adjusting control circuit 13 can export the first dimming commands (S115), if not the first light-modulating mode, then adjusting control circuit 13 can export the second dimming commands (S116).In like manner, when the first dimming commands is brightness dimming commands, the second dimming commands is colour temperature and color dimming commands, and two kinds of instructions also can be exchanged mutually.
In like manner, resolution is facilitated to be at the first light-modulating mode or the second light-modulating mode in order to allow user, an indicator light (not shown) can be set on this online digital light adjuster 1, the such as indicator light interval scale that do not work is in the first light-modulating mode, and the bright interval scale of indicator light is in the second light-modulating mode.
In sum, the present invention utilizes this online digital light adjuster 1 adjust the ON time of AC power and realize representing digital 0,1, after the AC power with digital dimming instruction is sent to LED light device 2, this LED light device 2 restores digital dimming instruction according to received AC power.When digital dimming instruction be produce under brightness adjustment pattern time, namely LED light device 2 changes the brightness of LED component according to this digital dimming instruction, because be adopt Digital Signals, the present invention can reach linear effect changing brightness, even the light adjustment of slight amplitude still can be reached under the state of low-light level, significantly improve tradition and cannot adjust at line dimmer the problem can glimmered or lose efficacy when LED lamp is low-light level (such as lower than 30%).LED light device 2 can be allowed even further namely to change the colour temperature of LED component and color according to this digital dimming instruction, reach former tradition and to be beyond one's reach completely function at line dimmer.The present invention is accustomed to traditional shirtsleeve operation, reach high-tech dimming effect, allow the life of people not be confined to bright with do not work, but light modulation can be utilized to build various delight of life and atmosphere, system has the patent requirements such as industry applications, novelty and progressive really, and patent is filed an application in whence in accordance with the law mere formality.
Institute of the present invention accompanying drawings only provides with reference to and use is described, is not used for the present invention's in addition limitr.Therefore such as use specification of the present invention and the equivalent structure change for it of diagramatic content institute, be all in like manner contained in the scope of the present invention, close and give Chen Ming.
Claims (14)
1. an online digital light adjuster, is connected in series with an AC power and at least one LED light device and forms a current supply circuit, and this online digital light adjuster comprises:
One switching circuit is be connected on this current supply circuit;
One circuits for triggering are connect this switching circuit for triggering this switching circuit conducting;
One adjusting control circuit, connect these circuits for triggering to control the triggered time of these circuits for triggering, wherein, one dim signal is encoded into the digital dimming instruction formed with a plurality of 0 and 1 by this adjusting control circuit system, contained by this digital dimming instruction 0 from 1 different and control the different of this trigger circuit triggers time, the code power making this switching circuit produce the different conducting percentage of tool is passed to this LED light device.
2. the online digital light adjuster as described in right 1, further series connection one voltage acquisition circuitry on this current supply circuit, also feedback to this adjusting control circuit with the voltage obtained on this current supply circuit, detect the change of AC supply voltage to use this switching circuit of trigger circuit triggers at correct time point for this adjusting control circuit, and online digital light adjuster obtains a small power supply by this voltage acquisition circuitry.
3. the online digital light adjuster as described in right 1 or 2, this adjusting control circuit connects a light modulation setting apparatus further, carries out operating and setting for user according to required light modulation demand.
4. the online digital light adjuster as described in right 3, this light modulation setting apparatus system is selected from variable resistor, flies shuttle knob, infrared receiver, RF receiver, digitally addressed lamp control interface (DALI) or RS485, RS422 or RS232 standard attachment unit interface one of them.
5. the online digital light adjuster as described in right 1 or 2, this switching circuit system be selected from exchange silicon control thyristor (TRIAC), thyristor (SCR), solid-state relay (SSR) or igbt (IGBT) one of them.
6. the online digital light adjuster as described in right 1, each half wave power supply of this code power represents single position.
7. the online digital light adjuster as described in right 1, each half wave power supply of this code power represents the byte be jointly made up of a plurality of position.
8. the online digital light adjuster as described in right 2, comprises a voltage acquisition device in this voltage acquisition circuitry, this voltage acquisition device system be selected from least one zener diode (ZENER) or many series connection rectifier diode one of them.
9. a LED light device, be coordinate the online digital light adjuster according to any one of right 1 to 8 jointly to apply, this LED light device comprises a tunable optical power supply and at least one luminescence unit, wherein:
This tunable optical power supply comprises:
One power supply and signal input part, for this online digital light adjuster of connection, to receive this online this AC power of digital light adjuster output or code power of this continuous a plurality of different conducting percentage;
One power supply unit, receives this AC power or this code power via power supply and signal input part, and produces a DC power supply accordingly, the DC power supply that supply LED light device is required;
One light source driving circuit is receive this DC power supply via power supply unit, and then drives this luminescence unit luminous;
One light modulation decoder, is receive this code power, and captures the ON time percentage of this code power, and then according to this ON time percentage, be reduced into 0 or 1, then be reduced to a digital dimming instruction by plural number 0 or 1;
One control circuit is that the digital dimming instruction exported according to this light modulation decoder produces a control signal and reaches this light source driving circuit, makes this light source driving circuit drive this luminescence unit to present corresponding variations in light effect according to this control signal.
10. the LED light device as described in right 9, this luminescence unit system be selected from light-emitting diode (LED), Organic Light Emitting Diode (OLED) or polymer LED (PLED) one of them, and the glow color system of this luminescence unit be selected from monochrome, double-colored or three looks one of them.
11. LED light device as described in right 9, this power supply and signal input part system be selected from female type, line-outgoing type, power end minor, E27, E12, E14, E17, E26, E39, E40, MR11, MR16, GU10, B22, T5, T8 or G24 connecting interface one of them.
12. 1 kinds of light modulating devices are the online digital light adjuster comprised according to any one of right 1 to 8, and comprise a tunable optical power supply further, and this tunable optical power supply comprises:
One power supply and signal input part, for this online digital light adjuster of connection, be responsible for this AC power or this code power that receive this online digital light adjuster output;
One power supply unit, receives this AC power or this code power via this power supply and signal input part, and produces a DC power supply accordingly;
One light source driving circuit is receive this DC power supply via power supply unit, and then output driving current;
One light modulation decoder, is receive this code power, and captures the ON time percentage of this code power, and then according to this ON time percentage, be reduced into 0 or 1, then be reduced to a digital dimming instruction in a plurality of 0 or 1;
One control circuit is that the digital dimming instruction exported according to this light modulation decoder produces a control signal and reaches this light source driving circuit, makes this light source driving circuit according to this control signal adjustment drive current.
13. 1 kinds of light-dimming methods adjusting brightness or colour temperature and color are the online digital light adjuster of application as described in right 3, and wherein, this light modulation setting apparatus is one fly shuttle knob, and the light-dimming method of this adjustment brightness or colour temperature and color comprises:
Judge that this flies shuttle knob and whether is pressed, if so, then perform light-modulating mode and switch, be that the first current light-modulating mode is switched to the second light-modulating mode, or the second current light-modulating mode is switched to the first light-modulating mode;
Judge that this flies shuttle knob and whether is rotated by adjustment, if so, judge whether current light-modulating mode is the first light-modulating mode again, if be in the first light-modulating mode then produce one first dimming commands; If be in the second light-modulating mode, then produce one second dimming commands;
The first dimming commands that transmission produces or the second dimming commands are to LED light device, this LED light device system and this online digital light adjuster are connected on this current supply circuit, wherein, when this first dimming commands uses as adjustment brightness, then this second dimming commands uses as adjustment colour temperature and color; When this first dimming commands uses as adjustment colour temperature and color, then this second dimming commands uses as adjustment brightness.
14. 1 kinds of light-dimming methods adjusting brightness or colour temperature and color, be the online digital light adjuster be applied to as described in right 3, wherein, this light modulation setting apparatus is a variable resistor, and the light-dimming method of this adjustment brightness or colour temperature and color comprises:
This online digital light adjuster is made to enter an initial condition, in this initial condition, this online digital light adjuster enters one first light-modulating mode and judges whether this variable resistor is rotated, if this variable resistor is not rotated, continue to remain on this initial condition, rotated if this variable resistor has, online digital light adjuster leaves initial condition and exports one first dimming commands;
After this online digital light adjuster leaves initial condition, if variable resistor continues to be rotated, online digital light adjuster continues output one first dimming commands; Do not rotated if this variable resistor continues one section of Preset Time, then switch this digital light adjuster and perform at one second light-modulating mode;
Under the second light-modulating mode, judge whether this variable resistor is rotated, if so, online digital light adjuster exports one second dimming commands, is not rotated, then switch this digital light adjuster and get back to initial condition if this variable resistor continues one section of Preset Time;
The first produced dimming commands or the second dimming commands are sent to LED light device, this LED light device system and this online digital light adjuster are connected on same current supply circuit, wherein, when this first dimming commands uses as adjustment brightness, then this second dimming commands uses as adjustment color; When this first dimming commands uses as adjustment color, then this second dimming commands uses as adjustment brightness.
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