CN106028531A - Adaptive control system and control method for temperature of LED stage lamp - Google Patents
Adaptive control system and control method for temperature of LED stage lamp Download PDFInfo
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- CN106028531A CN106028531A CN201610502459.0A CN201610502459A CN106028531A CN 106028531 A CN106028531 A CN 106028531A CN 201610502459 A CN201610502459 A CN 201610502459A CN 106028531 A CN106028531 A CN 106028531A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention relates to the technical field of the stage lamp, particularly to an adaptive control system and control method for a temperature of an LED stage lamp. The system comprises a temperature acquisition module, a temperature sensing control module, an A/D conversion module, an MCU control module, a power supply module, an LED drive module, a protection module, a compensation module, a fan control module and a cooling fan. The temperature sensing control module, the A/D conversion module, the power supply module, the LED drive module, the protection module, the compensation module, and the fan control module are connected with the MCU control module electrically; the temperature acquisition module and the A/D conversion module is connected with the temperature sensing control module electrically; the protection module and the LED drive module are connected electrically; and the cooling fan and the fan control module are connected electrically. According to the invention, on the basis of mutual cooperation of the control system, the control method, and the structural design, the LED lamp can have the good temperature control effect.
Description
Technical field
The present invention relates to stage lighting technical field, more particularly, to a kind of LED stage lamp temperature self-adaptation control system
And control method.
Background technology
The stage lighting of LED light source has energy-conservation, life-span length, environmental protection, fast response time and the feature such as is easily adjusted, and it is theoretical
Power consumption is the 10% of electric filament lamp, the 50% of fluorescent lamp, and the life-span is 10 times of fluorescent lamp.Meanwhile, LED white light source is without ultraviolet light, red
Outer light etc. radiate, and use resin silica gel packaging, have the advantages such as recoverable firm in structure.Additionally, it is because photochromic many, monochromatic
Property is good, the feature such as little of generating heat, and LED light depth of origin is favored by stage illumination, lighting industry, has the most been widely used in large-scale stage, opera
The performance such as institute, stadiums is on-the-spot.
Stage illumination, lighting many employings high-power LED light source, when ambient temperature is higher than trouble free service point temperature, within LED
Forward current will exceed place of safety, makes LED life be greatly lowered and even damages；And its peak wavelength, radiant flux, colour temperature etc.
Spectral characteristic also can be reduced luminous mass by temperature extreme influence；LED is many to be encapsulated with transparent epoxy resin, if junction temperature exceedes
Solid phase transition temperature (usually 125 DEG C), encapsulating material can change to rubber-like and thermal coefficient of expansion rises sharply, thus causes LED
Open circuit and inefficacy, affect the service life normally using and shortening LED of LED stage lamp.
Summary of the invention
The present invention is to overcome at least one defect described in above-mentioned prior art, it is provided that a kind of LED stage lamp temperature is adaptive
Answer control system and control method.Present configuration is simple, easy to use, by the phase interworking of control system and control method
Close so that LED lamp has good temperature control effect.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of LED stage lamp temperature self-adaptation controls
System, wherein, including temperature collect module, temperature sensing control module, A/D modular converter, MCU control module, power supply
Module, LED drive module, protection module, compensating module, fan control module and cooling fan, described temperature sensing controls mould
Block, A/D modular converter, power supply module, LED drive module, protection module, compensating module and fan control module are all and institute
Stating MCU control module electrical connection, described temperature collect module, A/D modular converter electrically connect with described temperature sensing control module,
Described protection module electrically connects with described LED drive module, and described cooling fan electrically connects with described fan control module, described
Temperature collect module is located at stage lighting light source.After LED stage lamp temperature self-adaptation control system completes to initialize, temperature acquisition
Module starts to gather the temperature value at stage lighting light source, the temperature value data that then will be collected by temperature sensing control module
Passing to A/D modular converter and carry out data conversion, MCU control module starts to read the data after changing on A/D modular converter subsequently,
Whether the temperature value according to reading judges, selects corresponding processing mode, run including cooling fan, cooling fan fortune
The speed of rotating speed during row, whether LED light source power keeps constant, and whether starting protection module etc..It is pointed out that one
Denier starting protection module, whole system is by out of service, it is necessary to just can manually boot system after waiting temperature cooling.
Further, the Master control chip of described MCU control module uses 32 MCU STM32F051, its running frequency
For 72M, the speed of service improves makes temperature curve more smooth, fluctuates little.
Further, described fan control module includes that the fan drive circuit being sequentially connected electrically, power circuit, fan turn
Speed testing circuit and fan failure testing circuit, described fan drive circuit, power circuit, rotation speed of the fan testing circuit and
Fan failure testing circuit is controlled by the Master control chip of described MCU control module.
Further, described temperature collect module includes the critesistor of several parallel connections, the heat of several parallel connections described
Quick resistance is arranged between LED light source along the radial direction of stage lighting LED light source installed surface.MCU control module passes through temperature sensing control
Molding block controls described several critesistor rotations gating, detects the temperature of LED light source installed surface diverse location, and by temperature-sensitive
The temperature simulation data of electrical resistance collection send into A/D modular converter, and temperature value is converted into digital signal input by A/D modular converter
MCU control module, completes a gatherer process, the local temperature that the center of LED light source installed surface i.e. LED light source is more concentrated
The highest, the lowest the closer to circumferential edges then temperature.
The present invention also provides for a kind of control method based on above-mentioned LED stage lamp temperature self-adaptation control system, wherein, bag
Include following steps:
The most described power supply module is powered to LED stage lamp temperature self-adaptation control system；
S2., 3 temperature thresholds are set in described MCU control module, respectively minimum temperature value Ta, interim temperature value Tb and
Maximum temperature values Tc, and 1 temperature extremes Tm；
S3., in system operation time, described MCU control module controls described temperature by described temperature sensing control module
Acquisition module is at interval of the data of the temperature value Tr at stage lighting light source of one section of set time collection；
The data of the temperature value Tr at stage lighting light source that the most described temperature collect module (1) will collect pass to described MCU
Control module (4)；
After the most described MCU control module receives the data of temperature value Tr, the temperature threshold of temperature value Tr with setting is carried out
Relatively, following different control strategy is taked according to comparative result:
If Tr is ＜ Ta, the temperature at light source is less than minima, is not required to cooling, and LED light source power keeps rated value, and protection module is not
Work；
If Ta ＜ Tr ＜ Tb, the temperature at light source is between minima and intermediate value, and LED temperature is excellent, MCU control module to
Fan control module sends control signal, fan control module the rotating speed controlling cooling fan is at a slow speed, and LED light source power is protected
Holding rated value, protection module does not works；
If Tb is ＜ Tr ＜ Tc, the temperature at light source is between intermediate value and maximum, and LED temperature is good, and MCU control module is aweather
Fan control module sends control signal, fan control module the rotating speed controlling cooling fan is that LED light source power is volume at a high speed
Definite value, protection module does not works；
If Tc is ＜ Tr ＜ Tm, the temperature at light source exceedes safe working temperature, and LED temperature is poor, and MCU control module is to fan control
Molding block sends control signal, fan control module the rotating speed controlling cooling fan is that MCU control module is according to temperature rise at a high speed
Turning down the output of LED light source, LED drive module enters temperature-compensating district, by compensating module, make output peak point current with
Average value current reduces therewith, reduces LED light source power；Now, protection module does not works；
If Tm is ＜ Tr, MCU control module starting protection module, turn off the output of LED drive module, reach to protect purpose.
Further, in described step S5, as Tc ＜ Tr ＜ Tm, after MCU control module reduces LED light source power, need
Again to contrast with new temperature data, until the temperature at light source just can adjust working state of system in safety range, extensive
Multiple LED light source is to rated power operation.
Further, in described step S3, described temperature collect module gathers stage after at interval of one period of set time
During the data of the temperature value Tr at lamp source, equal continuous acquisition three times, take the data that meansigma methods is temperature value Tr of three times, this is
In order to keep the accuracy of System Operation efficiency and data；Due to the LED of varying environment different capacity, real-time to temperature detection
Require difference, so the numerical value of one period of set time of described interval can adjust.
Further, in described step S4, the temperature value Tr's at stage lighting light source that temperature collect module will collect
Data are first transferred to described temperature sensing control module, and then the data of this temperature value Tr are passed to institute by temperature sensing control module
Stating A/D modular converter and carry out data conversion, the data after conversion are passed to described MCU control module by last A/D modular converter.
After MCU control module reads the data after A/D modular converter will be changed, according to LED power and versus temperature, determine
The driving electric current of the electric current drive end of LED light source, thus control the power of LED light source；If temperature drift, just by LED light source
Reducing power, open cooling fan simultaneously, temperature will reduce, and according to Weber Fechner law, now reduces LED light source power
I.e. reduce brightness, can't influence too much.
Compared with prior art, beneficial effects of the present invention:
The LED stage lamp temperature self-adaptation control system of the present invention and control method, for different operating modes, in LED lamp
The temperature in each stage carries out Comprehensive Control, makes the module temperature of stage lighting LED control more efficiently, also reduces stage simultaneously
Lamp running noises, and extend the life-span of the module of LED, by the use in multiple products, respond well, cost increases
Seldom, there is good practical value.
Accompanying drawing explanation
Fig. 1 is LED stage lamp temperature self-adaptation control system theory diagram of the present invention.
Fig. 2 is the theory diagram of fan control module in the present invention.
Fig. 3 is the control method flow chart of LED stage lamp temperature self-adaptation control system of the present invention.
Fig. 4 is LED power and versus temperature.
Detailed description of the invention
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is more preferably described, attached
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
In accompanying drawing, some known features and explanation thereof may be omitted and be will be understood by.Being merely cited for property of position relationship described in accompanying drawing
Explanation, it is impossible to be interpreted as the restriction to this patent.
As it is shown in figure 1, a kind of LED stage lamp temperature self-adaptation control system, wherein, including temperature collect module 1, temperature
Sensing control module 2, A/D modular converter 3, MCU control module 4, power supply module 5, LED drive module 6, protection module 7,
Compensating module 8, fan control module 9 and cooling fan 10, described temperature sensing control module 2, A/D modular converter 3, power supply electricity
Source module 5, LED drive module 6, protection module 7, compensating module 8 and fan control module 9 are all electric with described MCU control module 4
Connecting, described temperature collect module 1, A/D modular converter 3 electrically connect with described temperature sensing control module 2, described protection module
7 electrically connect with described LED drive module 6, and described cooling fan 10 electrically connects with described fan control module 9, and described temperature is adopted
Collection module 1 is located at stage lighting light source.After LED stage lamp temperature self-adaptation control system completes to initialize, temperature collect module 1
Start to gather the temperature value at stage lighting light source, then by temperature sensing control module 2, the temperature value data collected are passed
Carrying out data conversion to A/D modular converter 3, MCU control module 4 starts to read the number after changing on A/D modular converter 3 subsequently
According to, whether the temperature value according to reading judges, selects corresponding processing mode, run including cooling fan 10, cooling
The speed of rotating speed when fan 10 runs, whether LED light source power keeps constant, and whether starting protection module 7 etc..Need to refer to
Going out, once starting protection module 7, whole system is by out of service, it is necessary to just can manually boot after waiting temperature cooling
System.
In the present embodiment, the Master control chip of described MCU control module 4 uses 32 MCU STM32F051, and it runs frequency
Rate is 72M, and the speed of service improves makes temperature curve more smooth, fluctuates little.
As in figure 2 it is shown, described fan control module 9 include being sequentially connected electrically fan drive circuit 91, power circuit 92,
Rotation speed of the fan testing circuit 93 and fan failure testing circuit 94, described fan drive circuit 91, power circuit 92, fan turn
Speed testing circuit 93 and fan failure testing circuit 94 by described MCU control module 4 Master control chip control.
In the present embodiment, described temperature collect module 1 includes 3 critesistor in parallel, described 3 temperature-sensitives in parallel electricity
Hinder the radial direction along stage lighting LED light source installed surface to be arranged between LED light source.MCU control module 4 controls mould by temperature sensing
Block 2 controls described 3 critesistor rotations gating, the temperature of detection LED light source installed surface diverse location, and is adopted by critesistor
The temperature simulation data of collection send into A/D modular converter 3, and temperature value is converted into digital signal input MCU control by A/D modular converter 3
Molding block 4, completes a gatherer process, and the local temperature that the center of LED light source installed surface i.e. LED light source is more concentrated is more
Height is the lowest the closer to circumferential edges then temperature.
The control method of above-mentioned LED stage lamp temperature self-adaptation control system in the present embodiment, as it is shown on figure 3, include with
Lower step:
The most described power supply module 5 powers to LED stage lamp temperature self-adaptation control system；
S2., 3 temperature thresholds are set in described MCU control module 4, respectively minimum temperature value Ta, interim temperature value Tb and
Maximum temperature values Tc, and 1 temperature extremes Tm；
S3., in system operation time, described MCU control module 4 controls described temperature by described temperature sensing control module 2
Degree acquisition module 1 is at interval of the data of the temperature value Tr at stage lighting light source of one section of set time collection；
The data of the temperature value Tr at stage lighting light source that the most described temperature collect module 1 will collect pass to described MCU control
Molding block 4；
After the most described MCU control module 4 receives the data of temperature value Tr, the temperature threshold of temperature value Tr with setting is carried out
Relatively, following different control strategy is taked according to comparative result:
If Tr is ＜ Ta, the temperature at light source is less than minima, is not required to cooling, and LED light source power keeps rated value, protects module 7
Do not work；
If Ta is ＜ Tr ＜ Tb, the temperature at light source is between minima and intermediate value, and LED temperature is excellent, MCU control module 4
Send control signal to fan control module 9, fan control module 9 rotating speed controlling to cool down fan 10 is at a slow speed, LED light source
Power keeps rated value, protection module 7 not to work；
If Tb is ＜ Tr ＜ Tc, the temperature at light source is between intermediate value and maximum, and LED temperature is good, and MCU control module 4 is aweather
Fan control module 9 sends control signal, fan control module 9 rotating speed controlling to cool down fan 10 is at a high speed, LED light source power
For rated value, protection module 7 does not works；
If Tc is ＜ Tr ＜ Tm, the temperature at light source exceedes safe working temperature, and LED temperature is poor, and MCU control module 4 is to fan
Control module 9 sends control signal, fan control module 9 rotating speed controlling to cool down fan 10 is at a high speed, MCU control module 4
Turn down the output of LED light source according to temperature rise, LED drive module 6 enters temperature-compensating district, by compensating module 8, makes output
Peak point current reduces therewith with average value current, reduces LED light source power.Now, protection module 7 does not works；
If Tm is ＜ Tr, MCU control module 4 starting protection module 7, turn off the output of LED drive module 6, reach to protect purpose.
In described step S5, as Tc ＜ Tr ＜ Tm, after MCU control module 4 reduces LED light source power, need with new
Temperature data contrasts again, until the temperature at light source just can adjust working state of system in safety range, recovers LED light source
To rated power operation.
In described step S3, described temperature collect module 1 gathers at stage lighting light source after at interval of one period of set time
The data of temperature value Tr time, equal continuous acquisition three times, take the data that meansigma methods is temperature value Tr of three times, this is to keep
System Operation efficiency and the accuracy of data；Due to the LED of varying environment different capacity, to the requirement of real time of temperature detection not
With, so the numerical value of one period of set time of described interval can adjust.
In described step S4, the data of the temperature value Tr at stage lighting light source that temperature collect module 1 will collect first pass
Being defeated by described temperature sensing control module 2, then the data of this temperature value Tr are passed to described A/D by temperature sensing control module 2
Modular converter 3 carries out data conversion, and the data after conversion are passed to described MCU control module 4 by last A/D modular converter 3.MCU
After control module 4 reads the data after A/D modular converter 3 will be changed, according to the LED power shown in Fig. 4 and temperature curve relation
Figure, determines the driving electric current of the electric current drive end of LED light source, thus controls the power of LED light source；If temperature drift, just will
LED light source reduces power, opens cooling fan 10 simultaneously, and temperature will reduce, and according to Weber Fechner law, now reduces
LED light source power i.e. reduces brightness, can't influence too much.
The LED stage lamp temperature self-adaptation control system of the present embodiment and control method are applied on stage lamp, and
Carry out temperature test experiment.
Within the testing time of 8:00-14:00, at ambient temperature 45 DEG C, make LED light source Operation at full power, by temperature
Test probe is disposed close to symmetry two point installed on panel of lamp bead, light fixture is carried out high temperature ageing experiment, with 20min is
One timing node value.Test result indicate that, when 8:00-8:20, LED light source temperature is at 46 DEG C and less, and fan does not rotates；
When 8:40-10:20, LED light source temperature is between 46 DEG C-54 DEG C, and fan slowly runs, and above LED light source is all full power
Run；When 10:40-1400, fan high-speed rotation, LED light source downrating, until temperature drops to less than 54 DEG C, complete
System temperature automatically controls.Wherein one section of test data is as shown in table 1.
Table 1 stage lighting LED temperature test experiments data
| Time | LED temperature (DEG C) | Fan voltage (V) | LED power (%) |
| 8:00 | 26.9 | 0 | 100 |
| 8:20 | 37.6 | 0 | 100 |
| 8:40 | 45.1 | 0 | 100 |
| 9:00 | 46.0 | 4 | 100 |
| 9:20 | 48.3 | 5 | 100 |
| 9:40 | 50.4 | 6 | 100 |
| 10:00 | 52.0 | 7 | 100 |
| 10:20 | 54.0 | 8 | 100 |
| 10:40 | 56.2 | 8 | 99 |
| 11:00 | 57.9 | 9 | 99 |
| 11:20 | 59.6 | 9 | 99 |
| 11:40 | 58.3 | 10 | 99 |
| 12:00 | 55.8 | 10 | 99 |
| 12:20 | 54.0 | 10 | 99 |
| 12:40 | 51.9 | 9 | 100 |
| 13:00 | 50.4 | 8 | 100 |
| 13:20 | 57.5 | 8 | 100 |
| 13:40 | 45.7 | 7 | 100 |
| 14:00 | 45.5 | 6 | 100 |
Obviously, the above embodiment of the present invention is only used to clearly demonstrate example of the present invention, and is not to this
The restriction of the embodiment of invention.For those of ordinary skill in the field, the most all right
Make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.All at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the claims in the present invention
Within protection domain.
Claims (8)
1. a LED stage lamp temperature self-adaptation control system, it is characterised in that include temperature collect module (1), temperature sensing
Control module (2), A/D modular converter (3), MCU control module (4), power supply module (5), LED drive module (6), protection
Module (7), compensating module (8), fan control module (9) and cooling fan (10), described temperature sensing control module (2), A/D
Modular converter (3), power supply module (5), LED drive module (6), protection module (7), compensating module (8) and fan control
Module (9) all electrically connects with described MCU control module (4), and described temperature collect module (1), A/D modular converter (3) are with described
Temperature sensing control module (2) electrically connects, and described protection module (7) electrically connects with described LED drive module (6), described cooling
Fan (10) electrically connects with described fan control module (9), and described temperature collect module (1) is located at stage lighting light source.
A kind of LED stage lamp temperature self-adaptation control system the most according to claim 1, it is characterised in that described MCU
The Master control chip of control module (4) uses 32 MCU STM32F051, and its running frequency is 72M.
A kind of LED stage lamp temperature self-adaptation control system the most according to claim 2, it is characterised in that described fan
Fan drive circuit (91) that control module (9) includes being sequentially connected electrically, power circuit (92), rotation speed of the fan testing circuit (93)
And fan failure testing circuit (94), described fan drive circuit (91), power circuit (92), rotation speed of the fan testing circuit
(93) and fan failure testing circuit (94) by described MCU control module (4) Master control chip control.
A kind of LED stage lamp temperature self-adaptation control system the most according to claim 1, it is characterised in that described temperature
Acquisition module (1) includes the critesistor of several parallel connections, and the critesistor of several parallel connections described is pacified along stage lighting LED light source
The radial direction in dress face is arranged between LED light source.
5. one kind based on the controlling party according to the arbitrary described LED stage lamp temperature self-adaptation control system of claim 1 to 4
Method, it is characterised in that comprise the following steps:
The most described power supply module (5) powers to LED stage lamp temperature self-adaptation control system；
S2., 3 temperature thresholds, respectively minimum temperature value Ta, interim temperature value Tb are set in described MCU control module (4)
With maximum temperature values Tc, and 1 temperature extremes Tm；
S3., in system operation time, described MCU control module (4) controls institute by described temperature sensing control module (2)
State the temperature collect module (1) data at interval of the temperature value Tr at stage lighting light source of one section of set time collection；
The data of the temperature value Tr at stage lighting light source that the most described temperature collect module (1) will collect pass to described MCU
Control module (4)；
After the most described MCU control module (4) receives the data of temperature value Tr, the temperature threshold of temperature value Tr with setting is entered
Row compares, and takes following different control strategy according to comparative result:
If Tr is ＜ Ta, the temperature at light source is less than minima, is not required to cooling, and LED light source power keeps rated value, protects module
(7) do not work；
If Ta is ＜ Tr ＜ Tb, the temperature at light source is between minima and intermediate value, and LED temperature is excellent, MCU control module
(4) send control signal to fan control module (9), fan control module (9) rotating speed controlling cooling fan (10) is slow
Speed, LED light source power keeps rated value, protection module (7) not to work；
If Tb ＜ Tr ＜ Tc, the temperature at light source is between intermediate value and maximum, and LED temperature is good, MCU control module (4) to
Fan control module (9) sends control signal, fan control module (9) rotating speed controlling cooling fan (10) is at a high speed, LED
Light source power is rated value, and protection module (7) does not works；
If Tc is ＜ Tr ＜ Tm, the temperature at light source exceedes safe working temperature, and LED temperature is poor, and MCU control module (4) is aweather
Fan control module (9) sends control signal, fan control module (9) rotating speed controlling cooling fan (10) is at a high speed, and MCU is controlled
Molding block (4) turns down the output of LED light source according to temperature rise, and LED drive module (6) enters temperature-compensating district, by compensating
Module (8), makes output peak point current reduce therewith with average value current, reduces LED light source power；Now, protection module (7) is no
Work；
If Tm is ＜ Tr, MCU control module (4) starting protection module (7), turn off the output of LED drive module (6), reach protection
Purpose.
Control method the most according to claim 5, it is characterised in that in described step S5, as Tc ＜ Tr ＜ Tm, MCU
After control module (4) reduces LED light source power, need again to contrast with new temperature data, until the temperature at light source is in peace
Just can adjust working state of system in gamut, recover LED light source to rated power operation.
Control method the most according to claim 5, it is characterised in that in described step S3, described temperature collect module (1)
When gathering the numerical value of temperature value Tr at stage lighting light source after at interval of one period of set time, equal continuous acquisition three times, take three
Secondary meansigma methods is the data of temperature value Tr.
Control method the most according to claim 5, it is characterised in that in described step S4, temperature collect module (1) will be adopted
Collect to stage lighting light source at the data of temperature value Tr be first transferred to described temperature sensing control module (2), then temperature passes
The data of this temperature value Tr are passed to described A/D modular converter (3) and are carried out data conversion by sense control module (2), and last A/D changes
Data after conversion are passed to described MCU control module (4) by module (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502459.0A CN106028531A (en) | 2016-06-30 | 2016-06-30 | Adaptive control system and control method for temperature of LED stage lamp |
| PCT/CN2017/077201 WO2018000860A1 (en) | 2016-06-30 | 2017-03-19 | Temperature adaptive control system and control method for led stage lamp |
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|---|---|---|---|
| CN201610502459.0A CN106028531A (en) | 2016-06-30 | 2016-06-30 | Adaptive control system and control method for temperature of LED stage lamp |
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| CN112770432A (en) * | 2021-01-20 | 2021-05-07 | 华域视觉科技(上海)有限公司 | Over-temperature protection circuit and method of OLED lamp and OLED lamp |
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