CN104754791B - The control method of the operating current of electroluminescence device, device and system - Google Patents
The control method of the operating current of electroluminescence device, device and system Download PDFInfo
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Abstract
The application provides a kind of adjusting means of the operating current of electroluminescence device, method and electro-luminescent systems, and the method includes：The optical signal of described electroluminescence device is converted to the signal of telecommunication；When the described signal of telecommunication meets default operating current adjusting condition, produce the regulating command of the operating current for adjusting described electroluminescence device；And the operating current of described electroluminescence device is adjusted according to described regulating command.In the application, the optical signal of electroluminescence device is converted to the signal of telecommunication, adjusts the operating current of electroluminescence device when the signal of telecommunication meets default operating current adjusting condition so that the luminous intensity of electroluminescence device is maintained in default suitable scope.
Description
Technical field
The application is related to technical field of electricity, more particularly, to a kind of control method of the operating current of electroluminescence device,
Device and system.
Background technology
Infrared button on display floater in prior art includes light emitting diode, and it is a kind of electroluminescence device.Send out
The operating current of optical diode is fixed, and the size of the luminous intensity of light emitting diode affects the sensitivity of infrared button.But, send out
The luminous intensity of optical diode is affected by temperature and operating current, and when operating current is fixing, luminous intensity is with the external world
The change of environment such as temperature and change so that the sensitivity of infrared button accordingly changes, infrared button may be led to
Cross sensitive or insensitive.Remove outside light emitting diode, other has the electroluminescence device with light emitting diode similar characteristics
There is also and the excessive or too small problem of luminous intensity is made due to the change of the fixing external environment leading to of operating current.
Content of the invention
Presently filed embodiment provides control method, device and the system of the operating current of electroluminescence device, makes
The operating current obtaining electroluminescence device can be with dynamic regulation, thus ensureing the light intensity of electroluminescence device in suitable scope
Interior.
The one side of the application provides a kind of adjusting means of the operating current of electroluminescence device, can include：Photoelectricity
Conversion equipment, it is configured to for the optical signal of described electroluminescence device to be converted to the signal of telecommunication；Controller, it is configured to connect
Receive the signal of telecommunication that described photoelectric conversion device is converted to, and when the described signal of telecommunication meets default operating current adjusting condition
When, produce the regulating command of the operating current for adjusting described electroluminescence device；And current regulating devices, it is configured
Become to adjust the operating current of described electroluminescence device according to the regulating command that described controller produces.
According to an embodiment, described photoelectric conversion device can include light frequency conversion equipment, and it can be configured
Become described optical signal is converted to frequency signal；And described controller may be configured to according to described frequency signal and pre-
If frequency signal and regulating command corresponding relation, produce the regulation of the operating current for adjusting described electroluminescence device
Instruction.
According to an embodiment, described photoelectric conversion device can include photovoltage conversion equipment, and it can be configured
Become described optical signal is converted to voltage signal；And described controller may be configured to according to described voltage signal and pre-
If voltage signal and regulating command corresponding relation, produce the regulation of the operating current for adjusting described electroluminescence device
Instruction.
According to an embodiment, described photoelectric conversion device can include optical signal digital signal conversion equipment, and it can
To be configured to for described optical signal to be converted to digital signal；And described controller may be configured to according to described numeral letter
Number and default digital signal and regulating command corresponding relation, produce the work electricity for adjusting described electroluminescence device
The regulating command of stream.
According to an embodiment, described current regulating devices can include current regulating switch, and it may be configured to
Change the resistance of described electroluminescence device place circuit according to described regulating command, change to set by described electroluminescent
Standby operating current.
According to an embodiment, described current regulating switch is configured to make described electroluminescence device institute
Change so that the work of described electroluminescence device between default minimum resistance and default maximum resistance in the resistance of circuit
It is default value between maximum current value and default minimum current value as electric current.
According to an embodiment, the resistance of described electroluminescence device place circuit can be described electroluminescence device
Loop on resistance.
According to an embodiment, described current regulating switch can be serial ports controlling switch.
The another side of the application provides a kind of control method of the operating current of electroluminescence device, including：By described electricity
The optical signal of electroluminescent arrangements is converted to the signal of telecommunication；When the described signal of telecommunication meets default operating current adjusting condition, produce
For adjusting the regulating command of the operating current of described electroluminescence device；And adjusted described electroluminescent according to described regulating command
The operating current of luminaire.
According to an embodiment, the described signal of telecommunication can be the frequency signal being converted to by described optical signal；And
The regulating command producing the operating current for adjusting described electroluminescence device can include：According to described frequency signal and
Default frequency signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
According to an embodiment, the described signal of telecommunication can be the voltage signal being converted to by described optical signal；And
The regulating command producing the operating current for adjusting described electroluminescence device can include：According to described voltage signal and
Default voltage signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
According to an embodiment, the described signal of telecommunication can be the digital signal being converted to by described optical signal；And
The regulating command producing the operating current for adjusting described electroluminescence device can include：According to described digital signal and
Default digital signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
According to an embodiment, can be wrapped according to the operating current that described regulating command adjusts described electroluminescence device
Include：Change the resistance of described electroluminescence device place circuit by current regulating switch, to change by described electroluminescent
The operating current of equipment.
According to an embodiment, the resistance changing described electroluminescence device place circuit can include：Make described electricity
The resistance of electroluminescent arrangements place circuit changes so that described electroluminescent between default minimum resistance and default maximum resistance
The operating current of luminaire is default value between maximum current value and default minimum current value.
According to an embodiment, the resistance of described electroluminescence device place circuit can be described electroluminescence device
Loop on resistance.
According to an embodiment, described current regulating switch can be serial ports controlling switch.
The another aspect of the application provides a kind of electro-luminescent systems, including electroluminescence device and electroluminescent as above
The adjusting means of the operating current of luminaire.
Described electro-luminescent systems can include high quasi- transmitter.
In the application, the optical signal of electroluminescence device is converted to the signal of telecommunication, when the signal of telecommunication meets default work electricity
Stream adjusting condition when adjust electroluminescence device operating current so that the luminous intensity of electroluminescence device be maintained at default
In suitable scope.
Brief description
With reference to the explanation to the application embodiment below in conjunction with the accompanying drawings, can be more readily understood that the above of the application and
Other objects, features and advantages.With example, nonrestrictive mode to illustrate the application to accompanying drawing.Part in accompanying drawing is simply
The principle of the application is shown, is not necessarily to scale drafting, different parts or partial relative size close simultaneously
System in the conceived case can be different from shown in accompanying drawing.In the accompanying drawings, same or similar technical characteristic or part will
To be represented using same or similar reference.
Fig. 1 illustrates the regulation dress including electroluminescence device and its operating current that an embodiment of the application provides
The system architecture diagram put；
Fig. 2 illustrates the knot of the adjusting means of the operating current of electroluminescence device that an embodiment of the application provides
Structure block diagram；
Fig. 3 illustrates the frequency signal of current frequency converter output and showing of the corresponding relation of the light intensity of electroluminescence device
Example；
Fig. 4 illustrates the adjusting means of the operating current of electroluminescence device that another embodiment of the application provides
Structured flowchart；
Fig. 5 illustrates the linear relationship between the voltage signal of photovoltage conversion equipment output and the light intensity of electroluminescence device
Example；
Fig. 6 illustrates the adjusting means of the operating current of electroluminescence device that the further embodiment of the application provides
Structured flowchart；
Fig. 7 illustrates a specific example according to the application, adjusts the work of electroluminescence device using serial ports controlling switch
Make the schematic diagram of the partial circuit of the current value of electric current；
Fig. 8 shows the schematic block diagram of the electro-luminescent systems that an embodiment of the application provides；And
Fig. 9 shows the control method of the operating current of electroluminescence device that an embodiment of the application provides
Flow chart.
Specific embodiment
With reference now to accompanying drawing, to be described more fully presently filed embodiment.Being provided for of example embodiment
Make the application more detailed, and fully pass on protection domain to those skilled in the art.Elaborate numerous specific detail
As the example of particular elements, device, to provide the detailed understanding to presently filed embodiment.For those skilled in the art
Speech it will be obvious that, example embodiment can be to be implemented with many different forms and not necessarily specifically thin using these
Section, therefore they shall not be interpreted to limit scope of the present application.In addition, in an accompanying drawing of the present utility model or one kind
Element described in embodiment and feature can with the element shown in one or more other accompanying drawings or embodiment and
Feature combines.In some example embodiment, for purposes of clarity, do not describe crowd in the drawings and in the description in detail
Well known process, structure and technology.
One embodiment of the application provides a kind of adjusting means of the operating current of electroluminescence device.Fig. 1 illustrates
Electroluminescence device 10 and the structured flowchart of this adjusting means 11, this adjusting means 11 includes photoelectric conversion device 20, controls
Device 30 and current regulating devices 40.
Wherein, electroluminescence device 10 is the equipment including luminous device under electric field action, for example, light-emitting diodes
Pipe.The operating current that the electric current that electroluminescence device 10 lights is electroluminescence device 10 is made by electroluminescence device 10.When
When operating current is fixing, electroluminescence device 10 in the case that in other environmental conditions, for example ambient temperature is constant luminous intensity solid
Fixed.
Photoelectric conversion device 20 is for collecting the optical signal that electroluminescence device 10 sends and convert optical signals to
The equipment of the signal of telecommunication.For example, photoelectric conversion device 20 can include the telecommunications that photodetector and other obtain to photodetector
Number device being processed.
Controller 30 can receive the signal of telecommunication that photoelectric conversion device 20 is converted to, when the signal of telecommunication meets default work
During electric current adjusting condition, produce the regulating command of the operating current for adjusting electroluminescence device 10.Controller 30 is can
The devices such as the such as chip that the signal of telecommunication is processed, can include DSP（Digital signal processor, Digital Signal
Processor）Deng.
Current regulating devices 40 can adjust the work of electroluminescence device 10 according to the regulating command that controller 30 produces
Electric current.Current regulating devices 40 can be current regulating switch, can include various switches, such as single-pole single-throw switch (SPST), hilted broadsword
Commutator and double-point double-throw switch etc., the size of its resistance to electroluminescence device place circuit is adjusted, for example
Adjust the size of resistance by the connection in series-parallel relation changing resistance.Wherein, the resistance of electroluminescence device place circuit includes
The all-in resistance of integrated circuit or a part of circuit of the integrated circuit at electroluminescence device place that electroluminescence device is located
Resistance, the resistance in the loop of such as electroluminescence device.Current regulating devices 40 can include single or multiple electric currents and adjust
Switch.The detail being adjusted the operating current of electroluminescence device 10 by current regulating switch will be retouched later further
State.
In the application embodiment, the optical signal of electroluminescence device is converted to the signal of telecommunication, presets when the signal of telecommunication meets
Operating current adjusting condition when adjust electroluminescence device operating current so that electroluminescence device luminous intensity keep
In default suitable scope.For example, when electroluminescence device is for diode, by being provided using the application embodiment
Scheme, the light intensity of multiple diodes that can be different to electroluminescent properties carries out dynamic regulation, makes the light of different diodes
Can be located in default OK range by force, efficiently solve the asking of light intensity regulating of the different light emitting diode of batch
Topic, and when environmental condition changes the luminous intensity of impact light emitting diode it is also possible to be provided by the application embodiment
Scheme the luminous intensity of light emitting diode is adjusted, improve reliability and the scope of application of light emitting diode.
Fig. 2 illustrates adjusting means 11-1 of the operating current of electroluminescence device that one embodiment of the application provides
Structured flowchart, it includes photoelectric conversion device, controller 30 and current regulating devices 40, and in this example, photoelectric conversion device has
Body is embodied as light frequency conversion equipment 20-1, including photodiode 21 and current frequency converter 22.Controller 30 and electric current
The operation of adjustment equipment 40 for example refers to the description of Fig. 1, will not be described here.
Photodiode 21 is configured to receive electroluminescence device 10（With reference to shown in Fig. 1, this in figure is not shown）Send
Optical signal, convert optical signals to current signal and be input to current frequency converter 22.
Current frequency converter 22 is configured to for the current signal of input to be converted to frequency signal defeated to controller 30
Go out this frequency signal.
Controller 30 can using the corresponding relation of default frequency signal and operating current regulating command, according to reception
To frequency signal corresponding operating current regulating command send regulating command to current regulating devices 40.
Fig. 3 illustrates the frequency signal of current frequency converter 22 output and the corresponding relation of the light intensity of electroluminescence device 10
Example, wherein vertical coordinate represents frequency, and abscissa represents light intensity, VDDFor the running voltage of electroluminescence device 10, TAFor electricity
Ambient temperature during electroluminescent arrangements 10 work, λpWavelength for the optical signal of electroluminescence device 10.It can be seen that
Frequency is linear with light intensity, and frequency is bigger, and light intensity is stronger, and frequency is less, and light intensity is less.It may be thus possible, for example, to according to pre-
If the light intensity of electroluminescence device 10 expectation strength scope arrange current frequency converter 22 output frequency signal phase
Hope frequency values scope, when current frequency converter 22 output frequency signal frequency values outside this expected frequency value scope
When, show that the light intensity of electroluminescence device 10 is also at outside expectation strength scope, now then judge that meeting operating current is adjusted
Condition, needs to adjust the operating current of electroluminescence device 10, so that the operating current of electroluminescence device is after overregulating,
The converted frequency values obtaining of its light intensity return to expected frequency value scope, namely so that the light intensity of electroluminescence device 10 returns to
Expectation strength scope.Easy to understand, frequency signal and electroluminescence device 10 that the current frequency converter 22 shown in Fig. 3 exports
The corresponding relation of light intensity can be determined by the test of rational limited number of time.
Due to there is linear relationship between luminous intensity and electric current, thus electric current frequency can be set up for intermediate value with luminous intensity
Corresponding between the frequency values of frequency signal of rate converter 22 output and the current value of the operating current of electroluminescence device 10
Relation.For example, when the regulation of the resistance sizes by electroluminescence device 10 place circuit adjusts electroluminescence device 10
During the current value of operating current, can also pre-build current frequency converter 22 output the frequency values of frequency signal with electroluminescent
The current value of the operating current of luminaire 10, the resistance value of resistance of electroluminescence device 10 place circuit and electric current adjust and set
Corresponding relation between standby 40 regulating command, you can the frequency values of the frequency signal to be exported according to current frequency converter 22
Directly know the corresponding resistance value of resistance of electroluminescence device 10 place circuit, i.e. obtain corresponding electric current regulating command, and
Send this regulating command to current regulating devices 40.
In present embodiment, light frequency conversion equipment 20-1 is, for example, TSL245R chip, and it includes receiving optical signal and inciting somebody to action
Optical signal is converted to the photodiode of the signal of telecommunication, and the current frequency converter part converting electrical signals to frequency signal.
TSL245R chip receives optical signal the output frequency signal of electroluminescence device 10.It will be appreciated by those skilled in the art that here
TSL245R chip is only the example of light frequency conversion equipment 20-1, it is possible to use any other suitably can be by optical signal
Be converted to the equipment of frequency signal.
In present embodiment, the optical signal of electroluminescence device is converted to frequency signal, presets when frequency signal meets
Operating current adjusting condition for example outside expected frequency value scope when adjust the operating current of electroluminescence device so that electricity
The luminous intensity of electroluminescent arrangements is maintained in suitable scope.
Fig. 4 illustrates adjusting means 11-2 of the operating current of electroluminescence device that another embodiment of the application provides
Structured flowchart.With reference to shown in Fig. 4, adjusting means 11-2 includes photoelectric conversion device, controller 30 and current regulating devices 40,
In the present embodiment, photoelectric conversion device is embodied as photovoltage conversion equipment 20-2.Controller 30 and current regulating devices 40
Operation for example refer to the description of Fig. 1, will not be described here.
Similar with a upper embodiment, voltage signal and electroluminescence device 10 that photovoltage conversion equipment 20-2 exports
（With reference to shown in Fig. 1）Light intensity between there is linear relationship, Fig. 5 illustrate photovoltage conversion equipment 20-2 output voltage signal with
The example of the linear relationship between the light intensity of electroluminescence device 10.Wherein, photovoltage conversion equipment 20-2 is, for example, TSL260R
Chip, TSL261R chip or TSL262R chip, can be according to the current value of the operating current of photovoltage conversion equipment 20-2
The specifically chosen chip to be used of scope.TSL260R chip, TSL261R chip or the corresponding voltage-light intensity of TSL262R chip
Relation is as shown in Figure 5.VDDFor the running voltage of electroluminescence device 10, RLElectricity for the corresponding circuits of electroluminescence device 10
Resistance, TAAmbient temperature when working for electroluminescence device 10, λpWavelength for the optical signal of electroluminescence device 10.Shown in Fig. 5
Photovoltage conversion equipment 20-2 output voltage signal and the light intensity of electroluminescence device 10 between linear relationship can lead to
Cross rational limited number of time test to determine.
Similar with a upper embodiment, when photovoltage conversion equipment 20-2 output voltage signal value in desired voltage
When outside value scope, show that the light intensity of electroluminescence device 10 is also at outside expectation strength scope, now then judge to meet work
Make electric current adjusting condition, controller 30 can be using the voltage signal of the photovoltage conversion equipment 20-2 output pre-building and electricity
The current value of the operating current of electroluminescent arrangements 10, the resistance value of resistance of electroluminescence device 10 place circuit and electric current are adjusted
The corresponding relation of the regulating command of equipment 40, the voltage signal according to inputting from photovoltage conversion equipment 20-2 obtains corresponding electricity
The regulating command of stream adjustment equipment 40, and send this regulating command to current regulating devices 40.
In present embodiment, the optical signal of electroluminescence device is converted to voltage signal, presets when voltage signal meets
Operating current adjusting condition for example outside desired range of voltage values when adjust electroluminescence device operating current so that
The luminous intensity of electroluminescence device is maintained in suitable scope.
Fig. 6 illustrates the adjusting means of the operating current of electroluminescence device that the yet another embodiment of the application provides
The structured flowchart of 11-3, as illustrated, this adjusting means 11-3 includes photoelectric conversion device, controller 30 and current regulating devices
40.In this example, photoelectric conversion device is embodied as light digital signal conversion equipment 20-3.Controller 30 and current regulating devices 40
Operation for example refer to the description of Fig. 1, will not be described here.
The optical signal of electroluminescence device 10 is converted to digital signal and is sent to control by light digital signal conversion equipment 20-3
Device 30 processed.
Controller 30 can implement control using the corresponding relation of default digital signal and operating current regulating command.
For example, it is possible to rule of thumb formula etc. obtains the corresponding relation between digital signal and the light intensity of electroluminescence device 10, accordingly
Ground, can be with the current value of preset number signal and the operating current of electroluminescence device 10, electroluminescence device 10 place circuit
The resistance value of resistance and current regulating devices 40 regulating command corresponding relation, when light digital signal conversion equipment 20-3 is defeated
When the value of the digital signal going out is outside desired scope, show that the light intensity of electroluminescence device 10 is also at expectation strength scope
Outside, now then judge to meet operating current adjusting condition, controller 30 is according to from light digital signal conversion equipment 20-3 input
Digital signal can be obtained by corresponding to be supplied to the regulating command of current regulating devices 40.
The light digital signal conversion equipment 20-3 that present embodiment provides is, for example, TSL2580 chip.People in the art
Member understands, TSL2580 chip is only the example of light digital signal conversion equipment 20-3 here, it is possible to use any other is suitable
The equipment that can convert optical signals to digital signal.
In present embodiment, the optical signal of electroluminescence device is converted to digital signal, presets when digital signal meets
Operating current adjusting condition such as its value outside desired scope when adjust the operating current of electroluminescence device so that electricity
The luminous intensity of electroluminescent arrangements is maintained in suitable scope.
Adjusted by electric current in the adjusting means of the operating current of electroluminescence device that presently filed embodiment provides
Adjusting the current value of the operating current of electroluminescence device 10, correspondingly, controller 30 can be according to default light for equipment 40
The signal of telecommunication of electric conversion equipment output and the corresponding relation of the regulating command of current regulating devices 40, to determine and will be supplied to electric current
The regulating command of adjustment equipment 40.For example, with reference to Fig. 2, when photoelectric conversion device 20 is embodied as light frequency conversion equipment 20-1,
Controller 30 can be according to the regulation of the frequency signal of default light frequency conversion equipment 20-1 output and current regulating devices 40
The corresponding relation of instruction will be supplied to the regulating command of current regulating devices 40 to determine.
As described above, in a specific example, current regulating devices 40 can include single or multiple electric currents regulations and open
Close, the closure being switched by these or disconnect adjusting the operating current of electroluminescence device 10.For example, current regulating devices 40
Serial ports controlling switch, such as ADG714 serial ports controlling switch can be embodied as, it includes 8 passages, each passage includes one
Single-pole single-throw switch (SPST), can also interconnect between passage.
Specific example with reference to the operating current adjusting electroluminescence device 10 using ADG714 serial ports controlling switch
Operation to current regulating devices 40 is further described.
Fig. 7 is shown with the partial circuit that serial ports controlling switch adjusts the current value of operating current of electroluminescence device 10
Schematic diagram.In this example, the resistance of electroluminescence device place circuit is specially on the loop of electroluminescence device D1, D2
Resistance.
As shown in fig. 7, this circuit includes D1 part 71, D2 part 72 and u10 part 73（See big by a dotted line in Fig. 7
Cause the part of segmentation）, D1 part, D2 part are two light emitting diodes D1, D2 and its respective interlock circuit, on the loop of D1
Including resistance R23, R40, R39 and R31, the loop of D2 includes resistance R45, R46, R47 and R48.U10 part includes u10
（ADG714 serial ports controlling switch）, it is connected with the loop of D1, D2, and wherein, D1, D2 are and above-mentioned electroluminescence device 10（Ginseng
See Fig. 1）Corresponding example apparatus, u10 is and above-mentioned current regulating devices 40（Referring to Fig. 2, Fig. 4 or Fig. 6）Corresponding example sets
Standby.U10 includes the first to the 8th passage（S1-D1, S2-D2, S3-D3, S4-D4, S5-D5, S6-D6, S7-D7 and S8-D8）.From
In figure can be seen, the first to the third channel of u10（S1-D1, S2-D2, S3-D3）Connect the loop of D1, the 4th to the of u10 the
Clematis stem road（S4-D4, S5-D5, S6-D6）Connect the loop of D2, the 7th to the 8th passage of u10 is not used by.
By circuit diagram as can be seen that when the first to the third channel of u10 all disconnects, the resistance on the loop of D1 is
Greatly, be R23, R40, R39 and R31 sum, in this example be 2.75K ohm.When the first to the third channel of u10 all closes, D1
Loop on resistance minimum, be resistance value 1K ohm of R23 in this example.When the first to the third channel of u10 is not all off
When, the resistance on the loop of D1 can take 1.25K ohm, 1.5K ohm, 1.75K ohm, 2K ohm, 2.25K ohm, 2.5K Europe
Arbitrary value between nurse.U10 is according to controller（Not shown in Fig. 7）The regulating command of input（MOSI letter for example shown in Fig. 7
Number, the other SLCK signal that figure 7 illustrates and CS_SWITCH signal are clock signal and the chip selection signal of u10 respectively）Control
Being opened or closed so that resistance on the loop of D1 is corresponding resistance value of system the first to third channel.As it was previously stated, passing through
Adjust the resistance on the loop of D1, realize for the operating current of D1 being adjusted to desired scope.
It is to be appreciated that Fig. 7 be only example rather than limit the solution of the present invention it is readily appreciated that, can also be by D1
Loop outside the resistance of circuit part be adjusted realizing adjusting the purpose of the operating current of D1.For example, D1 institute in Fig. 7
Resistance R23, R40, R39 and R31 on the loop that the resistance of circuit not only includes D1, can also include D1 and remove in circuit
The resistance on circuit outside the loop of D1, for example, can introduce new regulation resistance between D1 and numbering 3（In figure is not shown
Go out）, the operating current of D1 is adjusted by the change of the resistance of this resistance.
When photoelectric conversion device be light frequency conversion equipment, current regulating devices 40 be Fig. 7 shown in serial ports controlling switch
When, the corresponding each parameter of frequency values with the frequency signal of light frequency conversion equipment output that controller 30 is utilized, default
And its corresponding relation can be as shown in table 1.
The frequency values of frequency signal of table 1. default light frequency conversion equipment output and the corresponding relation of other parameters
Table 1 shows the frequency values of frequency signal of default light frequency conversion equipment output and its that controller utilized
The corresponding relation of its parameter.If it is to be appreciated that prestoring the corresponding relation for producing regulating command in the controller 30,
Then can only store the default, frequency values of frequency signal of light frequency conversion equipment output and the regulation of serial ports controlling switch refers to
The corresponding relation of order.Here need to illustrate although using the form that regulating command is binary code in table 1, it will be readily appreciated that
Regulating command can be represented in any suitable manner, as long as this regulating command can be identified by current regulating devices 40 and hold
Row.
For example, when expecting that the frequency values of frequency signal of light frequency conversion equipment output are 0.2-0.4kHZ, and optical frequency
When the frequency signal of rate conversion equipment reality output is not in this expected range, controller 30 sends regulation to serial ports controlling switch
So that the first to second channel disconnects, third channel closes so that the resistance on the loop of D1 is 1.25k ohm for instruction 110,
Correspondingly the scope of the luminous intensity of electroluminescence device 10 is adjusted to desired 0.2-0.4.
Above-mentioned be described it should be clear that the situation in D2 and its loop is similar taking D1 and its loop as a example, can join
According to the situation execution in D1 and its loop, therefore here is omitted.
In addition, the circuit shown in Fig. 7 includes two electroluminescence devices of D1 and D2 it should be clear that can be directed to above-mentioned
Two electroluminescence devices of D1 and D2 are respectively provided with the corresponding relation shown in table 1, and respectively the respective channel of u10 are controlled
System.Easy to understand, if there is more electron luminescence equipment to be controlled, it is similar to the regulative mode of its operating current
, will not be described here.
When only having single electroluminescence device in circuit, such as in the circuit diagram shown in Fig. 7, only exist the situation of D1
Under, then the 4th to the 8th passage of u10 does not all use, only using the first to third channel.
As described above, the application embodiment actually additionally provides a kind of electro-luminescent systems.Fig. 8 illustrates this
The system schematic of electro-luminescent systems.Fig. 1 shows the more detailed structured flowchart of this system, as shown in figure 1, this system can
To include the tune of the operating current of the electroluminescence device described in above-mentioned electroluminescence device 10 and any of the above-described embodiment
Regulating device 11（Can be for example Fig. 2 respectively, adjusting means 11-1 shown in 4,6,11-2 and 11-3）.This electroluminescence device
10 is, for example, single or multiple touch infrared buttons, and it is judged whether with the effect of the finger of people using the infrared ray of transmitting
There is touch operation, and the position that touch operation occurs can be positioned according to the change of ultrared light path.Adjusting means 11
The infrared ray detecting is converted to the signal of telecommunication, and deviate from it when the ultrared light intensity of infrared button is excessive or too small
During the expected range of light intensity, adjusting means 11 correspondingly detects the signal of telecommunication and meets default adjusting condition, then adjusted by electric current
Equipment adjusts the operating current of corresponding touch infrared button so that the light intensity of this touch infrared button returns to expectation model
Enclose.
Above-mentioned electro-luminescent systems for example can include high quasi- transmitter.
One of the application embodiment further provides a kind of control method of the operating current of electroluminescence device, Fig. 9
The flow chart illustrating the method.
In step S901, the optical signal of electroluminescence device is converted to the signal of telecommunication.This step for example passes through above-mentioned light
Frequency Transfer Unit, photovoltage conversion equipment or light digital signal conversion equipment are realized.
In step S902, when the described signal of telecommunication meets default operating current adjusting condition, produce for adjusting
State the regulating command of the operating current of electroluminescence device.
For example, when the signal of telecommunication is for frequency signal, right according to frequency signal and default frequency signal and regulating command
Should be related to, produce corresponding regulating command；When the signal of telecommunication is for voltage signal, according to voltage signal and default voltage signal with
The corresponding relation of regulating command, produces corresponding regulating command；When the signal of telecommunication is for digital signal, according to digital signal and default
Digital signal and regulating command corresponding relation, produce corresponding regulating command.
The operating current of electroluminescence device in step S903, is adjusted according to regulating command.
Wherein, for example, it is possible to electroluminescence device place circuit is changed by current regulating switch according to regulating command
Resistance, to change the operating current by electroluminescence device.Specifically, for example make the electricity of electroluminescence device place circuit
Resistance changes between default minimum resistance and default maximum resistance so that the operating current of electroluminescence device is to preset
Value between high current value and default minimum current value.
Alternatively, the resistance of electroluminescence device place circuit is the resistance on the loop of electroluminescence device.
Current regulating switch is, for example, the serial ports controlling switch described in above-mentioned embodiment, and such as ADG714 serial ports controls
Switch.
The operation of each step in said method for example can be by the electroluminescence device above in association with Fig. 2-7 description
The adjusting means of operating current and its each component units executing, detail can be found in related description provided above, and here is no longer
Repeat.
In present embodiment, the optical signal of electroluminescence device is converted to the signal of telecommunication, when the signal of telecommunication meets default work
Make during electric current adjusting condition adjust electroluminescence device operating current so that the luminous intensity of electroluminescence device be maintained at pre-
If suitable scope in.
It should be noted that term used herein is only used for describing the purpose of specific embodiment, and it is not intended to limit
The application processed.The " one " of singulative used herein and " this（the）" be intended to also include plural form, unless up and down
Literary composition clearly indicates different implications.It is also understood that term " inclusion " refers to illustrated feature, whole when using in this manual
The presence of body, operation, step, element and/or part, but it is not excluded for other features one or more, entirety, operation, step
Suddenly, the presence of element, part and/or a combination thereof or interpolation.
Corresponding construction in claim, the institute of material, action and the key element being defined with " device or step add function "
Equivalents are had to be intended to including arbitrary structures, material or the action for carrying out perform function with reference to other claimed key elements.
It is for purposes of illustration and description to the description of the present application, and be not intended to come exhaustive with disclosed form or limit this Shen
Please.Those skilled in the art can expect a lot of modifications to the application in the case of without departing from scope of the present application and spirit
And change.Selected and description embodiment is to most preferably explain the principle of the application and practical application, and makes this
The others skilled in the art in field can come for the various embodiments with the various modifications being suitable to expected particular use
Understand the application.
Claims (18)
1. a kind of adjusting means of the operating current of electroluminescence device, including：
Photoelectric conversion device, it is configured to for the optical signal of described electroluminescence device to be converted to the signal of telecommunication；
Controller, it is configured to receive the signal of telecommunication that described photoelectric conversion device is converted to, and when the described signal of telecommunication meets
During default operating current adjusting condition, produce the regulating command of the operating current for adjusting described electroluminescence device；With
And
Current regulating devices, it is configured to adjust described electroluminescence device according to the regulating command that described controller produces
Operating current,
Wherein, described controller is configured to the corresponding relation according to the default signal of telecommunication and regulating command, produces for adjusting
The regulating command of the operating current of described electroluminescence device.
2. the adjusting means of the operating current of electroluminescence device as claimed in claim 1, wherein, described photoelectric conversion device
Including light frequency conversion equipment, it is configured to for described optical signal to be converted to frequency signal；And
Described controller is configured to the corresponding relation according to described frequency signal and default frequency signal and regulating command,
Produce the regulating command of the operating current for adjusting described electroluminescence device.
3. the adjusting means of the operating current of electroluminescence device as claimed in claim 1, wherein, described photoelectric conversion device
Including photovoltage conversion equipment, it is configured to for described optical signal to be converted to voltage signal；And
Described controller is configured to the corresponding relation according to described voltage signal and default voltage signal and regulating command,
Produce the regulating command of the operating current for adjusting described electroluminescence device.
4. the adjusting means of the operating current of electroluminescence device as claimed in claim 1, wherein, described photoelectric conversion device
Including optical signal digital signal conversion equipment, it is configured to for described optical signal to be converted to digital signal；And
Described controller is configured to the corresponding relation according to described digital signal and default digital signal and regulating command,
Produce the regulating command of the operating current for adjusting described electroluminescence device.
5. the adjusting means of the operating current of the electroluminescence device as any one of claim 1-4, wherein, described electricity
Stream adjustment equipment includes current regulating switch, and it is configured to change described electroluminescence device place according to described regulating command
The resistance of circuit, to change the operating current by described electroluminescence device.
6. the adjusting means of the operating current of electroluminescence device as claimed in claim 5, wherein, described current regulating switch
It is configured to make the resistance of described electroluminescence device place circuit in default minimum resistance and default maximum resistance
Between change so that the operating current of described electroluminescence device is default between maximum current value and default minimum current value
Value.
7. the adjusting means of the operating current of electroluminescence device as claimed in claim 5, wherein, described electroluminescence device
The resistance of place circuit is the resistance on the loop of described electroluminescence device.
8. the adjusting means of the operating current of electroluminescence device as claimed in claim 5, wherein, described current regulating switch
For serial ports controlling switch.
9. a kind of control method of the operating current of electroluminescence device, including：
The optical signal of described electroluminescence device is converted to the signal of telecommunication；
When the described signal of telecommunication meets default operating current adjusting condition, produce the work for adjusting described electroluminescence device
Make the regulating command of electric current；And
Adjust the operating current of described electroluminescence device according to described regulating command,
Wherein, the regulating command producing the operating current for adjusting described electroluminescence device includes：According to default telecommunications
Corresponding relation number with regulating command, produces the regulating command of the operating current for adjusting described electroluminescence device.
10. the control method of the operating current of electroluminescence device as claimed in claim 9, wherein, the described signal of telecommunication is served as reasons
The frequency signal that described optical signal is converted to；And
The regulating command producing the operating current for adjusting described electroluminescence device includes：According to described frequency signal and
Default frequency signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
The control method of the operating current of 11. electroluminescence devices as claimed in claim 9, wherein, the described signal of telecommunication is served as reasons
The voltage signal that described optical signal is converted to；And
The regulating command producing the operating current for adjusting described electroluminescence device includes：According to described voltage signal and
Default voltage signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
The control method of the operating current of 12. electroluminescence devices as claimed in claim 9, wherein, the described signal of telecommunication is served as reasons
The digital signal that described optical signal is converted to；And
The regulating command producing the operating current for adjusting described electroluminescence device includes：According to described digital signal and
Default digital signal and the corresponding relation of regulating command, produce the tune of the operating current for adjusting described electroluminescence device
Section instruction.
The control method of the operating current of 13. electroluminescence devices as any one of claim 9-12, wherein, according to
The operating current that described regulating command adjusts described electroluminescence device includes：Change described electroluminescent by current regulating switch
The resistance of light device place circuit, to change the operating current by described electroluminescence device.
The control method of the operating current of 14. electroluminescence devices as claimed in claim 13, wherein, changes described electroluminescent
The resistance of light device place circuit includes：
The resistance of described electroluminescence device place circuit is made to change between default minimum resistance and default maximum resistance,
The operating current making described electroluminescence device is default value between maximum current value and default minimum current value.
The control method of the operating current of 15. electroluminescence devices as claimed in claim 13, wherein, described electroluminescent sets
The resistance of standby place circuit is the resistance on the loop of described electroluminescence device.
The control method of the operating current of 16. electroluminescence devices as claimed in claim 13, wherein, described electric current adjusts and opens
Close as serial ports controlling switch.
A kind of 17. electro-luminescent systems, the electroluminescent including electroluminescence device and as any one of claim 1-8
The adjusting means of the operating current of equipment.
18. electro-luminescent systems as claimed in claim 17, wherein said electro-luminescent systems include high quasi- transmitter.
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| CN104754791A (en) | 2015-07-01 |
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