CN103874300A - Method and system for adjusting parameters of output end of LED drive - Google Patents
Method and system for adjusting parameters of output end of LED drive Download PDFInfo
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- CN103874300A CN103874300A CN201410126067.XA CN201410126067A CN103874300A CN 103874300 A CN103874300 A CN 103874300A CN 201410126067 A CN201410126067 A CN 201410126067A CN 103874300 A CN103874300 A CN 103874300A
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Abstract
The embodiment of the invention provides a method and system for adjusting parameters of the output end of an LED drive. The method comprises the steps that control signals are modulated according to parameter adjusting demands to obtain modulation signals containing parameter adjusting control information; the modulation signals containing the parameter adjusting control information are sent to the input end of the LED drive, the LED drive is made to demodulate the modulation signals received by the input end of the LED drive, and the parameters of the output end of the LED drive are adjusted according to the parameter adjusting control information. According to the embodiment, the parameters of the output end of the LED drive can be adjusted by adjusting the input end of the LED drive, an adjusting mode is convenient to implement, and maintenance cost is lowered.
Description
Technical field
The invention belongs to LED Driving technique field, relate in particular to a kind of method and system of the LED of adjusting drive output parameter.
Background technology
Along with the development of lighting technology, LED light source is just obtaining increasing development as a kind of green light source of new rise.In the utilization of LED, LED drives the adaptability of LED light source has been proposed to increasing requirement, such as various light source specifications on present market are more, there is no unified standard, this just requires aspect driving also to want carry out parameter adjustment for model and the manufacturer of LED specially, constantly change driving, be unfavorable for driving manufacturing enterprise production, get the raw materials ready and manage, also can cause the unstable of quality, and then produce various cost wastes simultaneously.。
In addition,, after the light fixture assembling completely that uses LED light source, due to various LED light source light decay differences, also can more occur requiring LED to drive the situation of finely tuning, to coordinate light source to reach the demand of best light efficiency.Be assemblied in light fixture the inside because existing LED drives, according to adjustment mode of the prior art, light fixture need to have been opened, finely tuned by potentiometer or the data wire adjusted above power supply, so will cause a lot of doing over again.If these lamp installation for example,, being not easy the place (street lamp) of maintenance, can increase again a large amount of costs.
In a word, very inconvenient to the regulative mode of LED drive output parameter in prior art, cause maintenance cost to increase.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method and system of the LED of adjusting drive output parameter, can be by regulating LED to drive input to regulate the parameter of LED drive output, regulative mode is convenient, and has reduced maintenance cost.
For achieving the above object, the embodiment of the present invention provides a kind of method of the LED of adjusting drive output parameter, comprising:
According to parameter adjustment demand, control signal is modulated to the modulation signal of the parameter adjustment control information that obtains comprising;
The modulation signal that comprises parameter adjustment control information described in the input driving to LED sends, so that described LED drives the modulation signal that its input is received to carry out demodulation, and parameter of output end LED being driven according to described parameter adjustment control information is adjusted.
In a preferred embodiment, described according to parameter adjustment demand, control signal is modulated specifically and comprised:
According to parameter adjustment demand and communication protocol, the phase place of control signal is modulated.
In a preferred embodiment,, described parameter adjustment demand comprises: voltage, electric current and/or the power of adjusting LED drive output.
In a preferred embodiment, described method also comprises: receive parameter adjustment demand information by bluetooth communication circuit.。
The present invention also provides a kind of method of the LED of adjusting drive output parameter on the other hand, comprising:
The input driving by LED receives the modulation signal of the parameter adjustment control information comprising;
The modulation signal receiving is carried out to demodulation, obtain described parameter adjustment control information;
According to described parameter adjustment control information, the parameter of output end that LED is driven is adjusted.
In a preferred embodiment, the described modulation signal to reception carries out demodulation, obtains described parameter adjustment control information and specifically comprises:
Described modulation signal is carried out to phase demodulating, obtain described parameter adjustment control information.
The present invention also provides a kind of system of the LED of adjusting drive output parameter on the other hand, comprises input adjuster and LED driving governor, and described LED driving governor is arranged in described LED and drives;
Described input adjuster comprises:
Modulation controller, for the adjustment demand that gets parms, and controls modulator control signal is modulated;
Modulator, under the control of modulation controller, modulates described control signal, obtains the modulation signal that comprises Parameter Modulation information;
Transmitting element, the modulation signal that comprises parameter adjustment control information described in sending for the input driving to LED;
LED driving governor, carries out demodulation for the modulation signal that drives input to receive to described LED, obtains parameter adjustment control information, and parameter of output end LED being driven according to described parameter adjustment control information is adjusted.
In a preferred embodiment, described modulator specifically comprises:
Chopper circuit, for according to parameter adjustment demand and communication protocol, modulates the phase place of control signal.
In a preferred embodiment, described parameter adjustment demand comprises: voltage, electric current and/or the power of adjusting LED drive output.
In a preferred embodiment, described input adjuster also comprises:
Bluetooth communication circuit, for receiving parameter adjustment demand information.
As can be seen here, the input that scheme in the present embodiment can drive to LED sends modulation signal, and in this modulation signal, comprise parameter adjustment control information, LED drives and can demodulate this parameter adjustment control information receiving after this modulation signal like this, and take this control information as foundation, parameter of output end is adjusted, thereby facilitated and efficiently parameter of output end adjusted, saved maintenance cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of the method for the adjusting LED drive output parameter that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is a kind of specific implementation of communication protocol;
The schematic diagram of the method for the adjusting LED drive output parameter that Fig. 3 provides for the embodiment of the present invention two;
The schematic diagram of the system of the adjusting LED drive output parameter that Fig. 4 provides for the embodiment of the present invention three;
Fig. 5 is a kind of specific implementation circuit of the embodiment of the present invention three system that regulates LED drive output parameter.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
Fig. 1 shows the schematic diagram of the method for the adjusting LED drive output parameter that the embodiment of the present invention one provides, and as shown in Figure 1, the method comprises the steps:
Step S101: according to parameter adjustment demand, control signal is modulated the modulation signal of the parameter adjustment control information that obtains comprising.
The parameter adjustment demand here can be to adjust voltage, electric current or the power etc. of LED drive output, or combination in any in above-mentioned parameter.
In practice, control signal is modulated and can be adopted a lot of concrete modulator approaches, for example, can, according to parameter adjustment demand and communication protocol, the phase place of control signal be modulated.
Before driving transmission modulation signal to LED, can drive agreement communication protocol with LED, a kind of specific implementation of communication protocol has for example been shown in Fig. 2, in Fig. 2, Uin is unmodulated control signal (for ac input voltage waveform), Uout is the modulation signal obtaining through phase-modulation, wherein in communication protocol, stipulates:
The width of t1-t2 is defined as the start bit of communication protocol;
The width of t3-t4 is defined as 1 of communication protocol;
The width of t5-t6 is defined as 0 of communication protocol;
The width of t7-t8 is defined as the stop bits of communication protocol.
Can demodulate the control information of digital form by communication protocol defined above.
Step S102: the modulation signal that comprises parameter adjustment control information described in the input driving to LED sends, so that described LED drives the modulation signal that its input is received to carry out demodulation, and parameter of output end LED being driven according to described parameter adjustment control information is adjusted.
As can be seen here, the input that scheme in the present embodiment can drive to LED sends modulation signal, and in this modulation signal, comprise parameter adjustment control information, LED drives and can demodulate this parameter adjustment control information receiving after this modulation signal like this, and take this control information as foundation, parameter of output end is adjusted, thereby facilitated and efficiently parameter of output end adjusted, saved maintenance cost.
In addition, parameter adjustment demand in practice can be obtained by input equipments such as keyboards, also can receive by wireless mode by wireless telecommunications systems such as bluetooth communication circuit.
Embodiment bis-
Scheme in embodiment mono-is to be described from the angle of modulation signal transmitting terminal, in the present embodiment, will be described with the angle of LED drive end, Fig. 3 shows the schematic diagram of the method for the adjusting LED drive output parameter that the embodiment of the present invention two provides, as shown in Figure 3, the method comprises the steps:
Step S301: the input driving by LED receives the modulation signal of the parameter adjustment control information comprising;
In practice, control signal is modulated and can be adopted a lot of concrete modulator approaches, for example, can, according to parameter adjustment demand and communication protocol, the phase place of control signal be modulated.
Step S302: the modulation signal receiving is carried out to demodulation, obtain parameter adjustment control information;
When modulation signal is to adopt when phase-modulation, corresponding modulation signal is carried out to demodulation is exactly phase demodulating.
Step S303: according to parameter adjustment control information, the parameter of output end that LED is driven is adjusted.
The parameter of output end here can be voltage, electric current or the power etc. of LED drive output, or combination in any in above-mentioned parameter.
As can be seen here, scheme in the present embodiment, by the modulation signal receiving is carried out to demodulation, obtains parameter adjustment control information, and the parameter of output end then according to this control information, LED being driven is adjusted, thereby facilitate and efficiently parameter of output end adjusted, having saved maintenance cost.
Embodiment tri-
Fig. 4 illustrates the schematic diagram of the system of the adjusting LED drive output parameter that the embodiment of the present invention three provides, and as shown in Figure 4, this system comprises: input adjuster 41 and LED driving governor 42.
Wherein, LED driving governor 42 is arranged in LED driving.
The modulation signal that comprises parameter adjustment control information described in transmitting element 413 sends for the input driving to LED;
LED driving governor 414 carries out demodulation for the modulation signal that drives input to receive to LED, obtains parameter adjustment control information, and adjusts control information according to above-mentioned parameter the parameter of output end of LED driving is adjusted.
Fig. 5 shows a kind of specific implementation circuit of the system of above-mentioned adjusting LED drive output parameter, as shown in Figure 5, chopper circuit in this circuit has been realized the modulator 412 in Fig. 4, and this chopper circuit, for according to parameter adjustment demand and communication protocol, is modulated the phase place of control signal.And the auxiliary circuit in input adjuster 41, input voltage sample circuit, input current sample circuit, MCU control circuit and triggering drive circuit have been realized modulation controller 411 in Fig. 4 in Fig. 5; LED in Fig. 5 drives the MCU control circuit in 2 to realize the LED driving governor in Fig. 4.
In Fig. 5, MCU control circuit passes through, after Gather and input voltage, input current, to control triggering drive circuit according to predefined communication protocol.The voltage that triggering drive circuit drives chopper circuit to make it AC is adjusted into the voltage waveform of expectation.
By it can also be seen that in Fig. 5, in practice, can bluetooth communication circuit be set in input adjuster 41, be used for receiving parameter adjustment demand information, to send to modulation controller (the MCU control circuit in Fig. 5 in input adjuster 41).In addition, modulation controller also can be adjusted demand information by the keyboard circuit input parameter in Fig. 5, can also adjust relevant information by display circuit display parameters simultaneously.
As can be seen here, the system in the present embodiment can realize the parameter of the input adjustment output driving by LED, and adjustment mode is convenient and efficient, has saved maintenance cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a method that regulates LED drive output parameter, is characterized in that, comprising:
According to parameter adjustment demand, control signal is modulated, obtain the modulation signal that comprises parameter adjustment control information;
The modulation signal that comprises parameter adjustment control information described in the input driving to LED sends, so that described LED drives the modulation signal that its input is received to carry out demodulation, and parameter of output end LED being driven according to described parameter adjustment control information is adjusted.
2. method according to claim 1, is characterized in that, described according to parameter adjustment demand, and control signal is modulated specifically and comprised:
According to parameter adjustment demand and communication protocol, the phase place of control signal is modulated.
3. method according to claim 1, is characterized in that, described parameter adjustment demand comprises: voltage, electric current and/or the power of adjusting LED drive output.
4. method according to claim 1, is characterized in that, described method also comprises: receive parameter adjustment demand information by bluetooth communication circuit.
5. a method that regulates LED drive output parameter, is characterized in that, comprising:
The input driving by LED receives the modulation signal of the parameter adjustment control information comprising;
The modulation signal receiving is carried out to demodulation, obtain described parameter adjustment control information;
According to described parameter adjustment control information, the parameter of output end that LED is driven is adjusted.
6. method according to claim 5, is characterized in that, the described modulation signal to reception carries out demodulation, obtains described parameter adjustment control information and specifically comprises:
Described modulation signal is carried out to phase demodulating, obtain described parameter adjustment control information.
7. a system that regulates LED drive output parameter, is characterized in that, comprises input adjuster and LED driving governor, and described LED driving governor is arranged in described LED and drives;
Described input adjuster comprises:
Modulation controller, for the adjustment demand that gets parms, and controls modulator control signal is modulated;
Modulator, under the control of modulation controller, modulates described control signal, obtains the modulation signal that comprises Parameter Modulation information;
Transmitting element, the modulation signal that comprises parameter adjustment control information described in sending for the input driving to LED;
LED driving governor, carries out demodulation for the modulation signal that drives input to receive to described LED, obtains parameter adjustment control information, and parameter of output end LED being driven according to described parameter adjustment control information is adjusted.
8. system according to claim 7, is characterized in that, described modulator specifically comprises:
Chopper circuit, for according to parameter adjustment demand and communication protocol, modulates the phase place of control signal.
9. system according to claim 7, is characterized in that, described parameter adjustment demand comprises: voltage, electric current and/or the power of adjusting LED drive output.
10. system according to claim 7, is characterized in that, described input adjuster also comprises:
Bluetooth communication circuit, for receiving parameter adjustment demand information.
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| CN201410126067.XA CN103874300A (en) | 2014-03-31 | 2014-03-31 | Method and system for adjusting parameters of output end of LED drive |
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| CN201410126067.XA CN103874300A (en) | 2014-03-31 | 2014-03-31 | Method and system for adjusting parameters of output end of LED drive |
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Cited By (1)
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