CN108064106A - Multi-way intelligence dimming controlling module and control method based on remote control - Google Patents
Multi-way intelligence dimming controlling module and control method based on remote control Download PDFInfo
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- CN108064106A CN108064106A CN201810077160.4A CN201810077160A CN108064106A CN 108064106 A CN108064106 A CN 108064106A CN 201810077160 A CN201810077160 A CN 201810077160A CN 108064106 A CN108064106 A CN 108064106A
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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
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- H05B45/10—Controlling the intensity of the light
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Abstract
The present invention provides a kind of multi-way intelligence dimming controlling modules and control method based on remote control, and including control panel and expansion board, the control panel is electrically connected with expansion board；Logic control module, communication module, button detection module and the second link block are provided on the control panel, the Logic control module connects the communication module, button detection module and the second link block respectively, and second link block is connected with communication module；The first link block, actuator control module, voltage transformation module, ID setup modules, power management module and power supply interface module are provided in the expansion board, first link block is connected with the second link block.Compatibility higher of the invention, is easily installed wiring, compact in structure and convenient to use, realizes remote control and stablizing for dim signal exports.
Description
Technical field
The present invention relates to intelligent switch technology field more particularly to a kind of multi-way intelligence brightness adjustment controls based on remote control
Module and control method.
Background technology
Existing intelligent dimming control module ID settings are realized by toggle switch, and toggle switch is usually used two
It is that system is counted, it is necessary to professional engineer can operate, setting ID with toggle switch, there is not directly perceived enough, operations
The shortcomings that inconvenient；And toggle switch generally only has physical communication interface, is realized by way of network interface or 485 buses
Networking or bus marco, in the occasion that wiring is inconvenient, the use of which is restricted.Existing 0-10V intelligent dimmings
Control module, since it is used for the 0-10V dim signals circuit dimmed, arranging for quality of output signals is not stabilized and increased in use
The phenomenon that applying, causing its output signal ripple larger, show is exactly that lamp source output brightness value fluctuates, and causes " to flicker "
Phenomenon.
The content of the invention
In view of this, the present invention provides a kind of multi-way intelligence dimming controlling module and control method based on remote control,
Compatible higher is easily installed wiring, compact in structure and convenient to use.
The present invention uses following technical scheme：
A kind of multi-way intelligence dimming controlling module based on remote control, wherein, including control panel and expansion board, the control
Making sheet is electrically connected with expansion board；
Logic control module, communication module, button detection module and the second link block, institute are provided on the control panel
It states Logic control module and connects the communication module, button detection module and the second link block, the second connection mould respectively
Block is connected with communication module；
The first link block, actuator control module, voltage transformation module, ID are provided in the expansion board, mould is set
Block, power management module and power supply interface module, first link block are connected with the second link block, and the ID sets mould
Block is electrically connected by the first link block, the second link block with Logic control module, for the bus to Logic control module
Address is set；The actuator control module passes through the first link block, the second link block and Logic control module electricity
Connection, for carrying out switching action to actuator according to the key switch signal or communication instruction that detect；The actuator control
Molding block connects the voltage transformation module, the first link block and power management module respectively, the voltage transformation module with
First link block connects, the power management module difference connection ID setup module, actuator control module and power interface
Module, the power supply interface module connect first link block.
Preferably, state display module is additionally provided on the control panel, the state display module is used to show power supply
State, communications status, actuator on off state and dim signal state value, the state display module and the logic control mould
Block connects.
Preferably, loading interfaces module is additionally provided in the expansion board, the loading interfaces module is controlled with actuator
Module connects.
Preferably, the Logic control module uses Cortex-M3 core chips.
Preferably, the ID setup modules include three Digital sum pipes, button and TM1618 driving chips.
A kind of multi-way intelligence dimming controlling method based on remote control, includes the following steps：
Step 1, system initialization；
Step 2, key scan subprogram is performed, obtains the currently detected key value of button detection module, subsequently into
Protocol processes subprogram；
Step 3, whether detection ID setup modules set bus ID, if having set, perform ID codes and show sub- journey
Sequence if not setting, first carries out ID codes and sets subprogram, subsequently into ID code display subroutines；
Step 4, Logic control module by serial ports receive instruct, described instruction include key switch signal, dim signal and
Signal of communication；
Step 5, whether correct the instruction being connected to is detected, if so, performing protocol processes subprogram；If it is not, then return to step
Rapid 4.
Preferably, the ID codes display subroutine, including：
The TM1618 driving chips of ID setup modules are initialized；
Read the ID codes of memory block storage；
Whether correct the data format of ID codes is detected, if so, TM1618 driving chips control numeral method；If it is not,
Miscue is then sent, and into ID codes subprogram is set to re-start the setting of ID codes.
Preferably, the ID codes set subprogram, including：
Step 301, whether the first button for detecting ID code setup modules is long-press state, if so, being set into ID codes
Pattern, charactron flicker；If it is not, then terminate program；
Step 302, whether the second button for detecting ID code setup modules is short-press state, if so, ID codes are added 1, into
Enter step 303；If it is not, then return to ID code Setting patterns；
Step 303, detect whether the first button is long-press state, if so, terminating program；It is set if it is not, then returning to ID codes
Put pattern.
Preferably, the protocol processes subprogram, including：
Logic control module obtains command information, and is parsed；
According to parsing as a result, carrying out inquiry, output, storage, recovery and/or the modification of brightness value；
The Logic control module uses Cortex-M3 core chips, is set using the timer of Cortex-M3 core chips
It puts ID codes and shows that refreshing frequency and ID codes set button long-press short-press time interval and the duty cycle of PWM wave and frequency T；It is logical
The duty cycle and frequency of PWM is overregulated, dim signal is controlled, rate-determining steps include：
MCU receives the control instruction from communication module, performs corresponding control action, and control instruction includes output and fixes
Brightness, control light modulation brightness gradual change to most dark or most bright, inquiry present intensity output state and modification gradual change dimming time interval
Instruction；
It is configured according to control instruction, changes the PWM duty cycle of respective channels；
The filtered circuit of PWM wave and amplifying circuit export corresponding 0-10V dim signals control LED light brightness and become
Change.
Beneficial effects of the present invention are：
The present invention substitutes the mode of traditional toggle switch in a manner that button and three Digital sum pipes set bus ID,
Three Digital sum pipes can realize the display of 000-999, and the long-press and short-press operation for coordinating button can be modified and set to ID
It puts, and the storage in real time of ID number data carries out power down preservation into the FLASH of Logic control module.
The present invention is provided simultaneously with physical communication interface and wireless communication function, and wireless communication function is by using different expansions
Module is opened up, can realize the communication modes such as WIFI/ bluetooths/Zigbee, makes product that there is the compatibility of bigger and be easily installed cloth
Line.
The present invention is using optimization voltage conversion circuit, raising PWM frequency and increases filter circuit, in output signal
Ripple is inhibited and is cut down, and achieved the purpose that dim signal stablizes output.The present invention includes two parts：Control panel and
Expansion board, two parts are arranged by the way of being superimposed up and down, save space and compact-sized.
Description of the drawings
Fig. 1 is a kind of structure diagram of the multi-way intelligence dimming controlling module based on remote control of the present invention.
Fig. 2 is that a kind of circuit of the ID setup modules of the multi-way intelligence dimming controlling module based on remote control of the present invention is former
Reason figure.
Fig. 3 is a kind of electricity of the actuator control module of the multi-way intelligence dimming controlling module based on remote control of the present invention
Road schematic diagram.
Fig. 4 is a kind of circuit of the voltage transformation module of the multi-way intelligence dimming controlling module based on remote control of the present invention
Schematic diagram.
Fig. 5 is a kind of circuit theory of the communication module of the multi-way intelligence dimming controlling module based on remote control of the present invention
Figure.
Fig. 6 is a kind of flow chart of the multi-way intelligence dimming controlling module method based on remote control of the present invention.
Fig. 7 is a kind of ID code display subroutines of the multi-way intelligence dimming controlling module method based on remote control of the present invention
Flow chart.
Fig. 8 is that a kind of ID codes of the multi-way intelligence dimming controlling module method based on remote control of the present invention set subprogram
Flow chart.
Fig. 9 is a kind of protocol processes subprogram of the multi-way intelligence dimming controlling module method based on remote control of the present invention
Flow chart.
Figure 10 be a kind of dim signal output valve of the multi-way intelligence dimming controlling method based on remote control of the present invention and
The variation relation figure of time.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of multi-way intelligence dimming controlling module based on remote control, including control panel
101 and expansion board 102, control panel 101 be electrically connected with expansion board 102.Logic control module, state are provided on control panel 101
Display module, communication module, button detection module and the second link block, Logic control module difference connection communication module, shape
State display module, button detection module and the second link block, the second link block are connected with communication module.
The first link block, actuator control module, loading interfaces module, voltage conversion mould are provided in expansion board 102
Block, ID setup modules, power management module and power supply interface module, the first link block are connected with the second link block, and ID is set
It puts module to be electrically connected with Logic control module by the first link block, the second link block, for Logic control module
Bus address is set；Actuator control module passes through the first link block, the second link block and Logic control module electricity
Connection, for carrying out switching action to actuator according to the key switch signal or communication instruction that detect；Actuator controls mould
Block connects the voltage transformation module, the first link block and power management module respectively, and voltage transformation module is connected with first
Module connects, power management module difference connection ID setup module, actuator control module and power supply interface module, power interface
Module connects first link block.Loading interfaces module is electrically connected with actuator control module, and fulgurite management module is to each
A module is powered management.
The voltage transformation module of first link block and expansion board, executor module, power management module, ID setup modules
It is electrically connected, interface is provided to realize to be electrically connected between control panel and expansion board；Loading interfaces module and actuator control
Molding block is electrically connected, and the external loading to be controlled provides interface.
State display module is connected with Logic control module on control panel, and is connected mould with first by the second link block
The power management module and communication module that block is connected in expansion board are electrically connected, display power supply status, communications status, execution
The state value of device on off state and dim signal.Key control module with Logic control module (MCU) by being electrically connected.
Key control module detects current key value, and is transmitted to Logic control module, to realize the manual switch to actuator.It patrols
It collects control module and provides control logic for other modules, receive and process ID setup modules, the setting signal of communication module
And signal of communication, and signal is sent to voltage transformation module and actuator control module by treated, it is defeated to dimming to realize
Go out the control of signal and actuator switch control.
As shown in Fig. 2, ID setup modules are forwarded to the second link block of control panel by the first link block, with logic
Control module is electrically connected, and the bus address of module is set, and bus address can be in logic control mould after setting
Power down preservation is carried out in block.ID setup modules use 3 Digital sum pipes, two buttons, IC chip TM1618 and necessary resistance
It is realized with capacitor element.
As shown in figure 3, actuator control module is forwarded to the second link block of control panel by the first link block, with
Logic control module is electrically connected, and Logic control module is according to the key switch signal or communication instruction detected to actuator
Switching action is carried out, achievees the purpose that carry out the dim signal from voltage transformation module switch control.The execution of this part
Device uses relay, and relay is driven and controlled by triode amplification, can realize that multichannel dims output channel
Extension.
As shown in figure 4, voltage transformation module is forwarded to the second link block of control panel by the first link block, with patrolling
Volume control module is electrically connected, and Logic control module is according to the PWM output waves of the communication instruction adjusting control module detected
Then shape is filtered pwm signal by this module, amplifies the dim signal output for forming stabilization afterwards, dim signal
It whether output, is operated by actuator control module, can perform emergency switch action.401 specific amplification factor of discharge circuit by
It is calculated, modifies and finely tune by changing the resistance value of resistance；Filter circuit 402 is by the way of low-pass filtering, mistake
The high-frequency signal in input signal AM1 is filtered, improves the quality of the dim signal of output.The module and actuator control module into
Row matching is, it can be achieved that the extension of multichannel light modulation passage.
Communication module is electrically connected with Logic control module, for carrying out wired or nothing between the present invention and external equipment
Line communicates, and can be RS485 bus communications during wire communication, RS485 telecommunication circuits are as shown in figure 5, Wifi/ can be used in wireless mode
Bluetooth/Zigbee modes.
As shown in fig. 6, the present invention provides a kind of multi-way intelligence dimming controlling method based on remote control, including walking as follows
Suddenly：
Step 1, system initialization；
Step 2, key scan subprogram is performed, obtains the currently detected key value of button detection module, subsequently into
Protocol processes subprogram；
Step 3, whether detection ID setup modules set bus ID, if having set, perform ID codes and show sub- journey
Sequence if not setting, first carries out ID codes and sets subprogram, subsequently into ID code display subroutines；
Step 4, Logic control module by serial ports receive instruct, described instruction include key switch signal, dim signal and
Signal of communication；
Step 5, whether correct the instruction being connected to is detected, if so, performing protocol processes subprogram；If it is not, then return to step
Rapid 4.
Wherein initialization program contains the parameter initialization to used on piece hardware resource, and serial ports receives interrupt processing
It contains and finishes receiving processing, Overflow handling etc..Logic control module uses Cortex-M3 core chips, the core used
Piece resource has timer 2, timer 3, timer 4, external interrupt, serial ports 2.Wherein using timer 2 ID codes is set to show
Refreshing frequency and ID codes set button long-press short-press time interval；The duty cycle of PWM wave is set using timer 3, timer 4
And frequency, make it compatible with peripheral circuit to reach output ripple minimum；Key control mould is pressed using external interrupt and hardware components
Block matches, to realize emergency switch；Communication extension, expansible RS485 communications, Zigbee communication, indigo plant are realized using serial ports 2
Tooth communication etc..
As shown in fig. 7, the ID codes display subroutine, including：
The TM1618 driving chips of ID setup modules are initialized；
Read the ID codes of memory block storage；
Whether correct the data format of ID codes is detected, if so, TM1618 driving chips control numeral method；If it is not,
Miscue is then sent, and into ID codes subprogram is set to re-start the setting of ID codes.
As shown in figure 8, the ID codes set subprogram, including：
Step 301, whether the first button for detecting ID code setup modules is long-press state, if so, being set into ID codes
Pattern, charactron flicker；If it is not, then terminate program；
Step 302, whether the second button for detecting ID code setup modules is short-press state, if so, ID codes are added 1, into
Enter step 303；If it is not, then return to ID code Setting patterns；
Step 303, detect whether the first button is long-press state, if so, terminating program；It is set if it is not, then returning to ID codes
Put pattern.
ID codes set subprogram mainly to distinguish operation by the long-press of button 1 and button 2, short-press, carry out the variation of ID codes,
And the preservation of FLASH areas is stored to, for use in display.
As shown in figure 9, the protocol processes subprogram, including：
Logic control module obtains command information, and is parsed；
According to parsing as a result, carrying out inquiry, output, storage, recovery and/or the modification of brightness value；
The Logic control module uses Cortex-M3 core chips, is set using the timer of Cortex-M3 core chips
It puts ID codes and shows that refreshing frequency and ID codes set button long-press short-press time interval and the duty cycle of PWM wave and frequency T；It is logical
The duty cycle and frequency of PWM is overregulated, dim signal is controlled, rate-determining steps include：
MCU receives the control instruction from communication module, performs corresponding control action, and control instruction includes output and fixes
Brightness, control light modulation brightness gradual change to most dark or most bright, inquiry present intensity output state and modification gradual change dimming time interval
Instruction；
It is configured according to control instruction, changes the PWM duty cycle of respective channels；If perform gradual change action, the duty
Than gradual change can be changed over time, the variation of lamplight brightness is shown as in output terminal；
The filtered circuit of PWM wave and amplifying circuit export corresponding 0-10V dim signals control LED light brightness and become
Change.
In the present embodiment, the frequency T of PWM is 80KHz.
Below by taking constant brightness and gradual luminance are adjusted as an example, illustrate brightness adjustment control process：
Embodiment 1：Fixed output brightness regulation
It is 30% that 1.MCU, which receives brightness adjustment control instruction and sets present intensity,；
2.MCU adjusts the duty cycle of the PWM corresponding to 30% brightness；It corresponds to and closes for duty cycle and brightness as shown in Figure 10
System；
3.PWM ripples are filtered by RC, after amplification, output smoothing 0-10V dim signals；
Embodiment 2：Gradual luminance is adjusted, and high-high brightness is gradually increased to from present intensity
After 1.MCU receives instruction, gradual change adjustment function is enabled；
2. according to fixed interval, PWM duty cycle is gradually increased, wherein the time interval is adjustable.
Protocol processes subprogram receives the command information from serial ports, is parsed, main to realize that function has：
1. fix a certain brightness value output；
2. realize that brightness gradually increases；
3. realize that current output brightness is gradually reduced；
4. time and the increased brightness value often increased once can be changed；
5. it closes current output brightness value and preserves the value into FLASH；
6. the brightness value of last time output is read from FLASH and recovers to export；
Brightness value exporting change is mainly controlled by the duty cycle of PWM, and the frequency influence of the PWM ripple of output valve
Size.It is analyzed with reference to the voltage transformation module of hardware circuit, as shown in figure 4, its specific calculating process is as follows：
First, by being converted into smooth simulation output waveform after the filtered circuits of MCU output PWM, voltage range is
0-3.3V, then amplify via direct current in-phase amplifier, stable 0-10V voltages can be obtained.Wherein, low-pass filter circuit by
Frequency is：
The amplification factor of in-phase amplification circuit is A=R4/R8+1, and wherein A need to take 3, R4=20K, R8=10K；According to R4,
R8 can acquire R10=R4 × R8/ (R4+R8), R10=6.67K ≈ 6.8K.
Timeconstantτ=RC, rule of thumb formula τ ＞ ＞ T, wherein T are PWM weeks that timer 3 and timer 4 are chosen
Phase,Therefore timeconstantτ=RC=6.8k*100n=0.68ms, meet τ ＞ ＞
T.And PWM duty cycle and output analog voltage are in a linear relationship.
Each function code described in dimming control function, that is, protocol processes subprogram, the partial function code are advised by communications protocol
It is fixed, it is instructed according to receiving, performs corresponding function；Protocol frame format is：
FE ID XX XX XX XX XX are verified and 0A；Concrete function exports for fixed light modulation, and it is defeated that any brightness may be selected
Go out；Gradual change light modulation output；
Gradual change adjusting shares six kinds of operating modes, and 00 00XX of FE ID 06CH verifications and 0A, wherein XX are function code：
The current light modulation output brightness value of inquiry：03 00 CH 00 01 of FE ID are verified and 0A；
It is time value to change fade time parameter XX：01 06 02 02 00 xx of FE are verified and 0A；
Switch function codes, described concrete function are as follows：
1. light modulation output is fixed, it is fixed to export a certain brightness value；
2. gradual change light modulation output --- it is gradually increased to most bright by being most secretly worth, wherein transformation period is adjustable；
3. gradual change light modulation output --- it is gradually increased to most secretly by most bright value, wherein transformation period is adjustable；
4. gradual change light modulation output --- current pass output is closed, and preserves it and exports brightness value；
5. gradual change light modulation output --- recover current access output, refer in particular to recover the output valve before 4 closings；
6. present intensity, which is fixed, increases by 10% output；
7. present intensity, which is fixed, reduces by 10% output；
8. inquire about present intensity output valve；
9. change gradual change dimming time parameter.
Performed function, the function realizing method is mainly according to linear between the duty cycle of PWM and dim signal amount
Correspondence adjusts duty cycle to achieve the purpose that change output, specifically by
The selection of TIM_SetCompareX (TIM_TypeDef*TIMx, the uint16_t CompareX) function is different logical
Road, and update it and capture the value of register, to reach the adjusting to duty cycle.Based on this implementation method, can complete to a certain logical
A certain brightness value output is fixed, increases or reduces current output valve in road.
For being adjusted between dim signal output valve 0-100%, control brightness of illumination completely not corresponding therewith with it,
Human eye sees that brightness change is the most apparent between 10%-60%, and more than 60% brightness does not change substantially.Therefore it is flat to realize
Sliding lightness stabilized variation, exemplified by exporting brightness and most secretly arrive most bright variation, constantly regulate is increased bright every time in change procedure
The interval time of angle value and progressive formation.Its dim signal output valve and the variation relation of time are illustrated in fig. 10 shown below, and pass through tune
Value and each change interval time that PWM duty cycle changes are saved, reaches effect shown in chart, in actual use it can be seen that bright
The smooth change of degree occurs without excessive fluctuation and " flicker " phenomenon.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of multi-way intelligence dimming controlling module based on remote control, it is characterised in that：
Including control panel and expansion board, the control panel is electrically connected with expansion board；
Logic control module, communication module, button detection module and the second link block are provided on the control panel, it is described to patrol
Volume control module connects the communication module, button detection module and the second link block respectively, second link block with
Communication module connects；
The first link block, actuator control module, voltage transformation module, ID setup modules, electricity are provided in the expansion board
Source control module and power supply interface module, first link block are connected with the second link block, and the ID setup modules are led to
Cross the first link block, the second link block is electrically connected with Logic control module, for the bus address to Logic control module
It is set；The actuator control module is electrically connected by the first link block, the second link block with Logic control module,
For carrying out switching action to actuator according to the key switch signal or communication instruction that detect；The actuator control module
The voltage transformation module, the first link block and power management module are connected respectively, and the voltage transformation module and first connect
Connection module connects, the power management module difference connection ID setup module, actuator control module and power supply interface module, institute
It states power supply interface module and connects first link block.
2. a kind of multi-way intelligence dimming controlling module based on remote control according to claim 1, it is characterised in that：Institute
It states and state display module is additionally provided on control panel, the state display module is used to show power supply status, communications status, execution
Device on off state and dim signal state value, the state display module are connected with the Logic control module.
3. a kind of multi-way intelligence dimming controlling module based on remote control according to claim 1, it is characterised in that：Institute
It states and loading interfaces module is additionally provided in expansion board, the loading interfaces module is connected with actuator control module.
4. a kind of multi-way intelligence dimming controlling module based on remote control according to claim 1, it is characterised in that：Institute
Logic control module is stated using Cortex-M3 core chips.
5. a kind of multi-way intelligence dimming controlling module based on remote control according to claim 1, it is characterised in that：Institute
Stating ID setup modules includes three Digital sum pipes, button and TM1618 driving chips.
6. a kind of multi-way intelligence dimming controlling method based on remote control, it is characterised in that：Include the following steps：
Step 1, system initialization；
Step 2, key scan subprogram is performed, the currently detected key value of button detection module is obtained, subsequently into agreement
Handle subprogram；
Step 3, whether detection ID setup modules set bus ID, if having set, perform ID code display subroutines, if
It does not set, then first carries out ID codes and subprogram is set, subsequently into ID code display subroutines；
Step 4, Logic control module is received by serial ports and instructed, and described instruction includes key switch signal, dim signal and communication
Signal；
Step 5, whether correct the instruction being connected to is detected, if so, performing protocol processes subprogram；If it is not, then return to step 4.
7. a kind of multi-way intelligence dimming controlling method based on remote control according to claim 6, it is characterised in that：
The ID codes display subroutine, including：
The TM1618 driving chips of ID setup modules are initialized；
Read the ID codes of memory block storage；
Whether correct the data format of ID codes is detected, if so, TM1618 driving chips control numeral method；If it is not, it then sends out
Miscue is sent, and into ID codes subprogram is set to re-start the setting of ID codes.
8. a kind of multi-way intelligence dimming controlling method based on remote control according to claim 6, it is characterised in that：
The ID codes set subprogram, including：
Step 301, whether the first button for detecting ID code setup modules is long-press state, if so, into ID code Setting patterns,
Charactron flickers；If it is not, then terminate program；
Step 302, whether the second button for detecting ID code setup modules is short-press state, if so, ID codes are added 1, into step
Rapid 303；If it is not, then return to ID code Setting patterns；
Step 303, detect whether the first button is long-press state, if so, terminating program；If it is not, then returning to ID codes sets mould
Formula.
9. a kind of multi-way intelligence dimming controlling method based on remote control according to claim 6, it is characterised in that：
The protocol processes subprogram, including：
Logic control module obtains command information, and is parsed；
According to parsing as a result, carrying out inquiry, output, storage, recovery and/or the modification of brightness value；
The Logic control module uses Cortex-M3 core chips, and ID is set using the timer of Cortex-M3 core chips
Code shows that refreshing frequency and ID codes set button long-press short-press time interval and the duty cycle of PWM wave and frequency T；Pass through tune
The duty cycle and frequency of PWM is saved, dim signal is controlled, rate-determining steps include：
MCU receives the control instruction from communication module, performs corresponding control action, it is bright that control instruction includes output fixation
Degree, control light modulation brightness gradual change to most dark or most bright, inquiry present intensity output state and modification gradual change dimming time interval refer to
Order；
It is configured according to control instruction, changes the PWM duty cycle of respective channels；
The filtered circuit of PWM wave and amplifying circuit export corresponding 0-10V dim signals control LED light brightness change.
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| CN109523899A (en) * | 2018-12-18 | 2019-03-26 | 南京奥斯坦丁电子有限公司 | A kind of open source robot |
| CN109936897A (en) * | 2019-04-24 | 2019-06-25 | 金松山 | LED industrial lighting wired remote multi-channel intelligent dimming control system |
| CN111083843A (en) * | 2019-12-30 | 2020-04-28 | 山东方星光电科技有限公司 | LED power that can freely assemble |
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