CN104919898B - Electron illuminating system and the method being used for illuminating synchronization - Google Patents
Electron illuminating system and the method being used for illuminating synchronization Download PDFInfo
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Abstract
In one embodiment, electron illuminating system includes: the first light source (L1), and it is applicable to launch the light with the first brightness, and the first brightness is the function of first driving signal (PWM1) with first frequency (f1)；At least one secondary light source (L2), it has the key light sensor (Als2) of the brightness for providing this secondary light source (L2) light around, wherein, this first light source (L1) is arranged to visually be connected with this at least one secondary light source (L2).Thus, this secondary light source (L2) is prepared to launch the light with the second brightness, second brightness is the function of the two driving signal (PWM2) with second frequency (f2), the second frequency (f2) of this two driving signal (PWM2) is adjusted to the light frequency (fL) of the light launched by the first light source (L1), detects this light frequency (fL) by means of key light sensor (Als2).Additionally, describe a kind of method for illuminating synchronization.
Description
The application relates to electron illuminating system, and relates to the method that illumination synchronizes.
Light emitting diode (i.e. LED) is increasingly being used in the field of architectural lighting.They
In major advantage one is that LED can accurately and effectively to adjust according to various needs
Light.Thus, it is also possible in the case of considering environment light condition, such as light color and brightness are carried out
Regulation.
The application relates to LED-based light source, and this LED drives by using pulse width modulating signal
Dynamic constant current source operates.
When installing more than one light source in single room, with trickle different frequency and/or phase
Position drives each light source.The use of frequencies different in various illuminations result between frequency
The overall variation slowly of phase relation, which results in subharmonic or difference frequency.People is had by these difference frequencies
Adverse influence.
It is therefore an objective to provide a kind of electron illuminating system overcoming described defect and corresponding side
Method.
This purpose is realized by the theme of dependent patent claims.Embodiments of the present invention and
Improvement is the theme of dependent claims.
In one embodiment, electron illuminating system includes the first light source and at least one second light
Source.This first light source and at least one secondary light source are arranged to visually be connected to each other.First
Light source is applicable to launch the light with the first brightness, and the first brightness is to have the first of first frequency to drive
The function of dynamic signal.At least one secondary light source has for providing light around this secondary light source
The key light sensor of brightness.Thus, secondary light source is prepared to launch the light with the second brightness,
Second brightness is the function of the two driving signal with second frequency.The second of two driving signal
Frequency is adjusted to the light frequency of the light launched by the first light source.By means of key light sensor to this light
Frequency detects.Light frequency is the first driving signal first frequency of the light launched by the first light source
The function of rate.
First light source is switched on, and launches tool according to the first driving signal with first frequency
There is the light of the first brightness.Key light sensor in secondary light source checks in the frequency range specified
Other light worked in same room.The light launched by the first light source is examined by key light sensor
Survey, particularly the light frequency of the light that detection is launched.The second frequency of two driving signal is conditioned
Become the light frequency detected by secondary light source.Subsequently, secondary light source is activated, and root
The light with the second brightness is launched according to the two driving signal using second frequency.
For driving the second frequency of secondary light source to be adjusted to detected being sent out by the first light source
The light frequency of the light penetrated.The light frequency of the light launched by the first light source and institute in driving the first light source
The first frequency used is corresponding.Therefore, the second frequency used at least one secondary light source
Tong Bu with the first frequency used in the first light source.Which results in the first driving signal and second to drive
Dynamic signal at least synchronizes in terms of the value of corresponding frequency.Under the frequency of this synchronization it is also possible that
First drives the constant phase contrast between signal and two driving signal, wherein two driving signal
Drive signal to be delayed by relative to first.Preferably, first signal and two driving signal is driven to close
Value in corresponding frequency and phase place is in synchronization.
Advantageously, when the two frequency overlap, subharmonic or difference frequency do not occur.People is
It is mounted with in the room of the present invention to feel more comfortable.
First light source and secondary light source are arranged to visually be connected to each other, and are i.e. in sight line each other
In.They can also be installed in a single room.
First light source and secondary light source each use one or more LED.These LED lead to respectively
Cross the first driving signal and two driving signal is driven, for this first driving signal and second
Drive signal, the most all use pulse width modulating signal.Each by LED
The brightness of the light of individual LED emission be corresponding pulse width modulated driving signal ON time with
The function of the ratio of turn-off time.
Thus, the first light source can be configured to main equipment, and at least one secondary light source and with institute
Stating at least one secondary light source uses each other light source of identical realization to be configured to
From equipment.
At least one secondary light source checks other light source existence by means of its key light sensor
Characteristic frequency region is in the frequency range of himself.This self frequency is for being generally used for driving
The predefined frequency of that LED used in this light source.Such as, at least one secondary light source
Check in the range of 10Hz to 1KHz.
Brightness is to describe the light source experienced by human eye to have how strong term.The unit measuring brightness claims
For " LUX ".
In further improving, the first light source includes the first control unit and is connected to the first control
First drive circuit of the output of unit.First control unit is prepared to generation to be had first and accounts for
First driving signal of empty ratio, the first dutycycle is the function of the first brightness.First drive circuit
Be prepared to be connected at least one light emitting diode, and be prepared to further as this first
The function driving signal drives at least one light emitting diode.
First control unit generates for the LED of drive connection in the first drive circuit
One drives signal.
Therefore, dutycycle is defined as the ON time of the first driving signal or activity cycle is total with it
Ratio between cycle.
In further embodiment, the first light source includes additional light sensors, and it is applicable to survey
The brightness of the light around flow control one light source, and be applicable to provide the function as measured brightness
First sensor signal.First drives signal to be adjusted the function as first sensor signal.
By means of the additional light sensors in the first light source, the first light source the light launched is adapted to
Environment light condition.
In exemplary realization, the additional light sensors of the first light source is for carrying out pulse width tune
During the turn-off time in the cycle of the first driving signal of system, brightness is measured.
In another embodiment, the first light source includes first communication module, this first communication mould
Block is for providing the first driving signal being conditioned so that in the first phase in shutoff cycle driving signal
Between by first light source launch represent at least one control parameter at least one additional optical pulse.
Advantageously, first drive the described shutoff cycle of signal at least one control parameter being sent out
Give at least one secondary light source.Because driving signal and two driving signal synchronized with each other first
Time, first drives the cycle that turns off of signal and two driving signal to occur at identical time point,
So the first light source also is able to during the turn-off time of its two driving signal by the first light source
The control parameter sent detects.
The example controlling parameter is colour temperature.In order at least one is controlled parameter from the first light source
Send to other light source being present in same room, particular at least one secondary light source, the most originally
The understanding of skilled person, uses such as according to the visual communication of standard IEEE 802.15.7.
In further improving, first communication module includes coding unit and is coupled to this coding
The modulating unit of the output of unit.Coding unit provides coding signal, and coding signal is the first driving
Signal and the function of control parameter provided by data signal.Modulating unit is prepared to provide regulation
The first driving signal, the first driving signal of regulation is the function of this coding signal.
The first driving signal control parameter to providing is used via data signal in coding unit
Encode.The coding signal obtained is modulated into the first driving signal of regulation.By this regulation
First drives signal to provide to the first drive circuit, thus causes the LED connected to drive first
Activation in short-term during the turn-off time of dynamic signal.Coding unit uses Manchester's code such as to protect
Card clock transfer.Modulating unit uses Modulation and Amplitude Modulation such as to transmit desired information (here for controlling
Parameter).
The key light sensor used in secondary light source and the additional optical used in the first light source pass
Sensor can realize as used photodiode.This photodiode can be connected to amplify
Device and corresponding signal processing.Therefore, each optical sensor provides at the light around sensor
Frequency, and the brightness reflected by the current output of sensor.Optical sensor also illustrates that ambient light
Sensor.
In exemplary realization, the first control unit provide control parameter.In another example
In, ambient light is measured by the additional light sensors of the first light source, according to measured ambient light,
First control circuit determines colour temperature according to the time in one day, and is sent to this colour temperature arrange
Other light source in the same room.
In another embodiment, secondary light source include the second control unit and be connected to this second
Second drive circuit of the output of control unit.This second control unit is coupled to key light sensing
The output of device, and be prepared to generate two driving signal.This second drive circuit is produced
Become to be connected at least one light emitting diode, and as the function of two driving signal drive to
A few light emitting diode.Key light sensor is applicable to provide the second sensor signal, the second sensing
Device signal is the brightness the detected letter with the light frequency detected of the light launched by the first light source
Number.
Key light sensor provides the second sensor signal, and it is launched by the first light source as detect
Light light frequency function and as the brightness of the light launched by the first light source detected
Function.Second control unit generates two driving signal, and it carries as via the second sensor signal
The function of the information of confession.Second drive circuit uses two driving signal to come the LED connected
Operate.
By means of key light sensor, two driving signal can be adjusted to first in its frequency and drive
The first frequency of dynamic signal.Further, it is possible to be adjusted to passed by key light by other parameter such as colour temperature
The parameter used in the first light source that sensor receives.
In improvement, secondary light source farther includes to be connected to key light sensor and the second control unit
Between second communication module.This second communication module is prepared to offer further and includes by first
Second sensor signal of the amendment of at least one control parameter that light source is launched.
In improvement, second communication module includes: demodulating unit, be coupled to the defeated of this demodulating unit
The clock unit gone out and the decoding unit of the output being coupled to this clock unit.This demodulating unit carries
It is provided as the demodulated signal of the function of the second sensor signal.This clock unit provide clock signal with
And the data signal of reception of the function as this demodulated signal.This decoding unit provides the of amendment
Two sensor signals, the second sensor signal is the data signal and the function of clock signal received.
Second communication module achieves for communicating with first in the first light source together with its unit
Module communicates required all functions, especially for receiving at least one merit controlling parameter
Energy.To including that the optical signal controlling parameter detects in key light sensor, and by means of the
Two sensor signals are transmitted.Second sensor signal is demodulated by demodulating unit, and carries
For demodulated signal.Thus, clock recovery is become clock signal by clock unit, and provides reception
Data signal.Decoding unit uses clock signal at least to the data signal from described reception
Individual control parameter is decoded, and provides the second sensor signal of amendment.
At least one transmitted in the second sensor signal of amendment is used to control parameter, the second control
Unit processed can be to the electricity provided in the second frequency of two driving signal or the second drive circuit
Flow is adjusted.
During the shutoff cycle of the first synchronization driving signal and two driving signal, it is achieved at least
One transmission controlling parameter and reception.
Such as, the first drive circuit and the second drive circuit are all by least one controlled current flow
Source realizes.By driving signal accordingly, this controlled current source is controlled.
In one embodiment, a kind of method for illuminating synchronization, comprise the following steps:
-in the first light source, generate the first driving signal with first frequency,
-activate the first light source, to launch, there is the light of the first brightness, the first brightness is the first driving signal
Function,
-in secondary light source, measure the light frequency of light launched by the first light source, this secondary light source and the
One light source is visually connected,
-in secondary light source, generate the two driving signal with second frequency,
-second frequency is adjusted to the frequency of measured light, and
-activation secondary light source is to launch the light with the second brightness, and the second brightness is two driving signal
Function,
Wherein, the first light source the letter of the first frequency that light frequency is the first driving signal of the light launched
Number.
Advantageously, by means of described method, the LED-based light source in a room
Synchronize according to the pulse-width modulation frequency used in these light sources.People is in this room
In joyful sense be enhanced.
In improving at one, the method farther includes:
-used visible light communication to transmit at least one control parameter by the first light source,
-at least one controls parameter to be used key light sensor to receive this by secondary light source,
-wherein, during the first shutoff cycle driving signal, it is achieved the behavior of transmission and reception
Behavior.
Because the first shutoff cycle synchronisation turning off cycle and two driving signal driving signal, example
As occurred simultaneously, so ambient light can be measured during this shutoff cycle.Subsequently, may be used
To arrange the brightness of light source according to the actual requirements.Advantageously, thus ambient light and artificial light (as
The light launched by light source) sum can keep constant, and achieve optimal energy-conservation.Additionally,
The driving signal of the first light source and secondary light source sometimes can be by re-synchronization.
Use illustrative embodiments that the present invention has been described in detail below with reference to accompanying drawing.In merit
On energy identical or there is the assembly of same effect and component has identical reference.Extremely
In the circuit part functionally corresponded to each other or assembly, will not be to it in following each diagram
Carry out repeated description.Wherein:
Fig. 1 shows the illustrative embodiments of the electronic lighting device according to the principle proposed,
Fig. 2 shows the signal diagram of the LED illumination relating to prior art,
Fig. 3 shows the signal diagram of the embodiment relating to Fig. 1, and
Fig. 4 shows the second exemplary embodiment party of the electronic lighting device according to the principle proposed
Formula.
Fig. 1 shows the illustrative embodiments of the electronic lighting device according to the principle proposed.
First light source L1 and secondary light source L2 is disposed in a room.This room has at an A
And the window extended between a B.First light source L1 includes that the first control unit Ctl1 and first is driven
Dynamic device circuit Dr1.First light source L1 also has and is connected in series with the first drive circuit DR1
Number is the LED D11 of m, D12 ..., D1m.
First control unit Ctl1 provides the first driving signal to the first drive circuit Dr1
PWM1.First driving signal PWM1 is the pulse width modulating signal with first frequency f1.
First drive circuit Dr1 uses the first driving signal PWM1 to carry out the LED of drive connection
D11、…、D1m.Thus, LED D11 ..., D1m are serially connected, first LED
D11 is connected to the output of the first drive circuit Dr1.LED D11 ..., D1m relate to ginseng
Examine current potential terminal 10.
Secondary light source L2 includes: key light sensors A ls2, the second control unit Ctl2 and second
Drive circuit Dr2.Secondary light source L2 has at the output of the second drive circuit Dr2 that
This number being connected in series is the LED D21 of n, D22 ..., D2n.LED D21、…、
D2n also relates to reference potential terminal 10.
Key light sensors A ls2 provides the second sensor signal S2 to the second control unit Ctl2, its
Function as the brightness of the light around secondary light source L2.Second control unit Ctl2 provides second
Driving signal PWM2, it is as the function of the second sensor signal S2.Second drive circuit
Dr2 uses two driving signal PWM2 to control diode D21 ..., the D2n connected.
First the first light source L1 is connected.This first light source L1 launches the light with the first brightness, the
One brightness is the function of the first driving signal PWM1.Therefore, the first light source L1 the light launched
There is light frequency fL.Secondary light source L2 by means of key light sensors A ls2 in following characteristics frequency
Sense for ambient light: this feature frequency is in the second driving letter of secondary light source L2 self
In the scope of number PWM2.The optical frequency of the light that secondary light source L2 detection is launched by the first light source L1
Rate fL.The second frequency f2 of two driving signal PWM2 is adjusted to by secondary light source L2 subsequently
Light frequency fL detected.Use in secondary light source L2 is used for generation two driving signal
The frequency reference of the second frequency f2 of PWM2 is adjusted to same with light frequency fL sensed
Step.When realizing this and synchronizing, its LED D21 ..., D2n are connected by secondary light source L2.
Light frequency fL because being launched by the LED D11 ... of the first light source L1, D1m is the
The function of the one first frequency f1 driving signal PWM1, so at two driving signal PWM2
The second frequency f2 of interior use is Tong Bu with first frequency f1.Advantageously, therefore avoid by slightly
What the difference frequency of the subharmonic of the LED light that different frequencies drives produced is considered as by the people in room dodging
Bright adverse effect.
Fig. 2 shows the signal graph of the LED illumination relating to prior art.Each signal is depicted
Amplitude process in time for pulse width modulating signal.The diagram at top shows for driving
The process of the signal a of dynamic first LED.Middle diagram presents for driving the 2nd LED
The process of the signal b of lamp.The frequency of the frequency ratio signal a of signal b is high by 4%.The diagram of bottom
Show the process of result summation signals c of signal a and signal b.There is a LED in the lump
People in the room of lamp and the second LED experienced by this consequential signal c.
As can be seen, the nuance of the frequency between signal a and signal b makes result summation
The dutycycle of signal c occurs slowly varying.Arrow 1 indicates the dutycycle of wherein summation signals c to be
50% and the point of twice of amplitude that amplitude is signal a and signal b.Arrow 2 indicates the most total
Be 100% with the dutycycle of signal c and amplitude be only 1 point.Which results in difference frequency, its basis
Below equation is defined by the difference of the frequency used in signal a and signal b:
Fbeat=fb-fa
Wherein, fbeat represents the frequency that difference frequency, fa represent signal a, and fb represents the frequency of signal b.
This difference frequency fbeat result in the flicker that the joyful sense to people has adverse effect.
This signal diagram shows that prior art realizes, and is only used for the reason of contrast to show
The effect of described invention.
Fig. 3 shows the signal diagram relating to the embodiment that Fig. 1 is described.Top view illustrates
The the first driving signal PWM1 process in time used in first light source L1.Middle
Diagram shows the process of the two driving signal PWM2 used in secondary light source L2.Bottom
Diagram show such as the people's warp in the same room with the first light source L1 and secondary light source L2
The result summation signals of the first driving signal PWM1 and two driving signal PWM2 gone through.
Because the frequency of the first frequency driving signal PWM1 and two driving signal PWM2 is such as
Upper described synchronized with each other, so driving signal PWM1 and two driving signal PWM2 first
Summation in difference frequency does not occur.Which enhance in the face of the first light source L1 and the people of secondary light source L2
Joyful sense.
The first driving signal PWM1 and two driving signal can be identified at time interval
In the shutoff cycle of the synchronization of PWM2, in this time interval, the summation signals in the diagram of bottom has
Zero amplitude value.
Fig. 4 shows the second exemplary embodiment party of the electronic lighting device according to the principle proposed
Formula.This embodiment is based on the assembly identical with the embodiment of Fig. 1.Add extra assembly with
Realize additional functional.In Fig. 1, the first light source L1 and secondary light source L2 with visually that
This mode connected is mounted in the same room.
First light source L1 has the additional light sensors of the input being connected to the first control unit Ctl1
Als1.This additional light sensors Als1 provides first sensor signal S1, and it is as measured
The function of the brightness of the light around the first light source L1.First light source L1 also includes first communication module
Com1.First communication module Com1 is connected to the output of the first control unit Ctl1.First control
Unit Ctl1 processed applies also for providing the first clock signal clk 1 to first communication module Com1
With data signal DS including at least one control parameter.First communication module Com1 is applicable to
There is provided the first driving signal PWM1a of regulation so that in the first shutoff driving signal PWM1
During cycle, at least one by first light source L1 at least one control parameter of transmitting expression is added
Light pulse.
First communication module Com1 includes coding unit Cod, and is coupled to this coding unit
The modulating unit Mod of the output of Cod.Coding unit Cod provides coding signal CS, its conduct
The control parameter provided by data signal DS and the function of the first clock signal clk 1.Modulation is single
Unit Mod provides the first driving signal PWM1a being conditioned, and it is as this coding signal CS's
Function.
In addition to the embodiment including Fig. 1, secondary light source L2 also includes second communication module
Com2, it is connected between key light sensors A ls2 and the second control unit Ctl2.Second communication
Module Com2 receives the second sensor signal S2, and thus provides the second sensor being modified
Signal S2a, it includes being launched by the first light source L1 and sensing by means of key light sensors A ls2
At least one control parameter.
In detail, second communication module Com2 includes: demodulating unit Demod, clock unit
Cl and decoding unit Decod.Demodulating unit Demod provides demodulated signal DMS, its conduct
The function of the second sensor signal S2.Clock unit Cl is coupled to demodulating unit Demod's
Output.Clock unit Cl is prepared to provide second clock signal CLK2 and as demodulated signal
Data signal RDS of the reception of the function of DMS.Decoding unit Decod is coupled to clock list
The output of unit Cl.Decoding unit Decod is prepared to provide the second sensor signal being modified
S2a, it is as data signal RDS received and the function of second clock signal CLK2.
Additional light sensors Als1 in first light source L1 senses the light around the first light source L1,
And the corresponding measured value in first sensor signal S1 is provided.Signal is driven first
During the shutoff cycle of PWM1, can be with sense ambient light.Drive signal PWM1's first
During turn-on cycle, i.e. when LED D11 ..., D1n are switched on, measure colour temperature.First control
Unit Ctl1 processed determines its to same room to be communicated according to first sensor signal S1
The control parameter of its light source (being secondary light source L2 here).Represent such as light temperature or synchronization parameter
Control parameter is by means of data signal DS, corresponding with represented by the first clock signal clk 1
Clock is provided to first communication module Com1 together.Coding unit Cod uses as graceful thorough
Si Te coding encodes controlling parameter, and to the control encoded in modulating unit Mod
Parameter is modulated such as Modulation and Amplitude Modulation.During the first shutoff cycle driving signal PWM1,
The first driving signal PWM1a according to amendment, by temporarily connecting in the first light source L1
Control parameter is sent to secondary light source by LED.
During the corresponding synchronization shutoff cycle of two driving signal PWM2, secondary light source L2
In key light sensors A ls2 sense for ambient light, and detect and sent out by the first light source L1
The extra-pulse sent.These pulses are demodulated in demodulating unit Demod, according at clock
The second clock signal CLK2 recovered in unit Cl is decoded, and as being modified
Second sensor signal S2a is provided to the second control unit Ctl2.Second control unit Ctl2
Its two driving signal PWM2 can be adjusted according to the control parameter received.
Thus, it is possible to during the shutoff cycle driving signal PWM1, PWM2 synchronized,
It is advantageously carried out the first light source L1 and the resynchronisation of secondary light source L2.It addition, other parameter is such as
Colour temperature can be adjusted to the value measured by the first light source L1 and provide.
Furthermore, it is possible to sense, by the first light source L1, the ring caused due to the time in one day
The change of border light.Can correspondingly brightness to the LED in L1 and L2 be adjusted.Such as,
Measured by window such as the window in Fig. 1 by additional light sensors Als1 in the first light source L1
The light that family AB enters.The first light is regulated by the dutycycle arranging the first driving signal PWM1
The brightness of the LED in the L1 of source.Suitable control parameter is subsequently transmitted to secondary light source L2,
Secondary light source L2 and then its two driving signal PWM2 can be adjusted.
In alternative embodiment, power line communication is used for control parameter from the first light source
L1 is sent to secondary light source L2.
Reference numerals list
L1, L2 light source
PWM1, PWM2, PWM1a drive signal
S1, S2, S2a sensor signal
Ctl1, Ctl2 control unit
Dr1, Dr2 drive circuit
Als1, Als2 optical sensor
F1, f2, fL frequency
D11 ..., D1m light emitting diode
D21 ..., D2n light emitting diode
Com1, Com2 communication module
Cod coding unit
Mod modulating unit
DS data signal
CS encodes signal
DMS demodulated signal
The data signal that RDS receives
CLK1, CLK2 clock signal
Demod demodulating unit
Cl clock unit
Decod decoding unit
10 reference potential terminals
A, B point
1,2 arrow
Claims (13)
1. an electron illuminating system, including:
-the first light source (L1), it is applicable to launch the light with the first brightness, described first brightness
It is the function of first driving signal (PWM1) with first frequency (f1),
-at least one secondary light source (L2), it has for providing described secondary light source (L2) week
The key light sensor (Als2) of the brightness of the light enclosed,
Wherein, described first light source (L1) is arranged to and described at least one secondary light source (L2)
Visually it is connected, and
Wherein, described secondary light source (L2) is prepared to launch the light with the second brightness, described
Second brightness is the function of the two driving signal (PWM2) with second frequency (f2), described
The second frequency (f2) of two driving signal (PWM2) is adjusted to by described first light source (L1)
The light frequency (fL) of the light launched, by means of described key light sensor (Als2) to described light frequency
(fL) detect, and
Wherein, described first light source (L1) light frequency (fL) of the light launched is described first
Drive the function of the first frequency (f1) of signal (PWM1).
Electron illuminating system the most according to claim 1, wherein, described first light source (L1)
Including:
-the first control unit (Clt1), it is prepared to generate has the first of the first dutycycle and drives
Dynamic signal (PWM1), described first dutycycle is the function of described first brightness, and
-the first drive circuit (Dr1), it is connected to the defeated of described first control unit (Clt1)
Going out, described first drive circuit (Dr1) is prepared to be connected at least one light emitting diode
(D11), and as described first drive signal (PWM1) function drive described at least
One light emitting diode (D11).
Electron illuminating system the most according to claim 1 and 2, wherein,
-described first light source (L1) includes additional light sensors (Als1), and it is applicable to described
The brightness of the first light source (L1) light around measures, and provides as measured brightness
The first sensor signal (S1) of function, and
-to drive signal to described first as the function of described first sensor signal (S1)
(PWM1) it is adjusted.
Electron illuminating system the most according to claim 1,
Wherein, described first light source (L1) includes first communication module (Com1), and it is used for carrying
The first driving signal (PWM1a) for regulation so that drive signal (PWM1) described first
The shutoff cycle during, described first light source (L1) launch and represent that at least one controls parameter
At least one additional optical pulse.
Electron illuminating system the most according to claim 4, wherein, described first communication module
(Com1) including:
-coding unit (Cod), it provides coding signal (CS), described coding signal (CS)
It is the control parameter provided by data signal (DS) and the function of the first clock signal (CLK1),
And
-modulating unit (Mod), it is coupled to the output of described coding unit (Cod), described
Modulating unit (Mod) is prepared to provide the regulation of the function as described coding signal (CS)
First driving signal (PWM1a).
Electron illuminating system the most according to claim 1, wherein, described secondary light source (L2)
Including:
-the second control unit (Clt2), it is coupled to the output of described key light sensor (Als2),
And described second control unit (Clt2) is prepared to generate described two driving signal (PWM2),
And
-the second drive circuit (Dr2), it is connected to the defeated of described second control unit (Clt2)
Going out, described second drive circuit (Dr1) is prepared to be connected at least one light emitting diode
(D21), and as described in the function drive of described two driving signal (PWM2) at least one
Individual light emitting diode (D21),
And wherein, described key light sensor (Als2) is applicable to provide the second sensor signal (S2),
Described second sensor signal (S2) is being detected of the light launched by described first light source (L1)
Brightness and the function of light frequency (fL) that detected.
Electron illuminating system the most according to claim 6, wherein, described secondary light source (L2)
Farther include to be connected to described key light sensor (Als2) and described second control unit (Ctl2)
Between second communication module (Com2), described secondary light source (L2) is prepared to offer and includes
Second sensor being modified of at least one the control parameter launched by described first light source (L1)
Signal (S2a).
Electron illuminating system the most according to claim 7, wherein, described second communication module
(Com2) including:
-demodulating unit (Demod), it is used for providing demodulated signal (DMS), described demodulated signal
(DMS) it is the function of described second sensor signal (S2),
-clock unit (Cl), it is coupled to the output of described demodulating unit (Demod), institute
State clock unit (Cl) to be prepared to provide second clock signal (CLK2) and as described solution
Adjust the data signal (RDS) of the reception of the function of signal (DMS), and
-decoding unit (Decode), it is coupled to the output of described clock unit (Cl), institute
State decoding unit (Decode) to be prepared to provide the second sensor signal (S2a) being modified,
Described the second sensor signal (S2a) of being modified be described second clock signal (CLK2) and
The function of the data signal (RDS) received.
9., for the method illuminating synchronization, comprise the following steps:
-in the first light source (L1), generate the first driving signal with first frequency (f1)
(PWM1),
-activate described first light source (L1) to launch the light with the first brightness, described first brightness
It is the described first function driving signal (PWM1),
-in secondary light source (L2) light frequency to the light launched by described first light source (L1)
(fL) measuring, described secondary light source (L2) is with described first light source (L1) visually
It is connected,
-in described secondary light source (L2), generate the two driving signal with second frequency (f2)
(PWM2),
-described second frequency (f2) is adjusted to measured light frequency (fL), and
-activate described secondary light source (L2) to launch the light with the second brightness, described second brightness
It is the function of described two driving signal (PWM2),
Wherein, described first light source (L1) light frequency (fL) of the light launched is described first
Drive the function of the first frequency (f1) of signal (PWM1).
Method the most according to claim 9, farther includes:
-during the described first shutoff cycle driving signal (PWM1), at described first light source
(L1) in, the brightness to the light around described first light source (L1) measures,
-as measured light brightness function to described first drive signal (PWM1) carry out
Adjust.
11., according to the method described in claim 9 or 10, farther include:
-used visible light communication to transmit at least one control parameter by described first light source (L1),
-by described secondary light source (L2) use key light sensor (Als2) receive described at least one
Individual control parameter,
-wherein, during the described first shutoff cycle driving signal (PWM1), it is achieved send
Behavior and the behavior of reception.
12. methods according to claim 11, the behavior of transmission includes:
-at least one control parameter described is encoded,
-the control parameter encoded is modulated, and
-use code modulated control parameter to launch light.
13. methods according to claim 12, the behavior of reception includes:
-at least one code modulated control parameter is demodulated,
-the control parameter encoded is decoded,
-recovered clock signal (CLK), and
-the second sensor signal (S2a) of being modified is provided, described in the second sensor letter of being modified
Number (S2a) be described at least one control the function of parameter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13151016.6 | 2013-01-11 | ||
| EP13151016.6A EP2755445B1 (en) | 2013-01-11 | 2013-01-11 | Electronic lighting system and method for lighting synchronization |
| PCT/EP2013/075126 WO2014108249A1 (en) | 2013-01-11 | 2013-11-29 | Electronic lighting system and method for lighting synchronization and synchronization of pwm drive signals for the removal of optical sub-harmonics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104919898A CN104919898A (en) | 2015-09-16 |
| CN104919898B true CN104919898B (en) | 2016-11-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5193201A (en) * | 1990-04-23 | 1993-03-09 | Tymes Laroy | System for converting a received modulated light into both power for the system and image data displayed by the system |
| CN101577994A (en) * | 2008-05-06 | 2009-11-11 | 旭丽电子(广州)有限公司 | Light sensing device for correcting lighting equipment and sensing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5193201A (en) * | 1990-04-23 | 1993-03-09 | Tymes Laroy | System for converting a received modulated light into both power for the system and image data displayed by the system |
| CN101577994A (en) * | 2008-05-06 | 2009-11-11 | 旭丽电子(广州)有限公司 | Light sensing device for correcting lighting equipment and sensing method |
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