CN109302773A - A kind of LED projector lamp driving circuit - Google Patents
A kind of LED projector lamp driving circuit Download PDFInfo
- Publication number
- CN109302773A CN109302773A CN201811358945.5A CN201811358945A CN109302773A CN 109302773 A CN109302773 A CN 109302773A CN 201811358945 A CN201811358945 A CN 201811358945A CN 109302773 A CN109302773 A CN 109302773A
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- circuit
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- chip microcontroller
- data
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Classifications
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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]
- H05B45/10—Controlling the intensity of the light
-
- 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
Abstract
The invention discloses a kind of LED projector lamp driving circuits, including DC power source input units, IC power supply circuit, digital signal input unit, misconnection protection location, total loop current detecting unit, total loop voltage detection unit, 4 road drivers, LED open circuit detection unit, single-chip microcontroller, DAC digital analog converter, temperature detecting unit and the first data isolation input unit, wherein DC power source input units pass through total loop current detecting unit respectively and total loop voltage detection unit is connect with single-chip microcontroller, single-chip microcontroller simulates the connection of dim signal end by DAC digital analog converter ANA corresponding with 4 road drivers, the pulse light modulation signal detection end connection corresponding with single-chip microcontroller respectively of the corresponding pwm pulse signal end of 4 road drivers, the output of 4 road drivers is separately connected the LED light of corresponding color, and The test side of LED open circuit detection unit and single-chip microcontroller that the output of 4 road drivers passes through respectively connects.This circuit structure is simple, and circuit is more stable, safe.
Description
Technical field
The present invention relates to a kind of technical field of LED drive circuit, especially a kind of LED projector lamp driving circuit.
Background technique
Currently, LED light source as a kind of common alternative source of light, uses in people's lives more and more, such as:
Light bulb ball, ceiling lamp, downlight, Frame lamp etc., are widely used in household, corridor, building corridor, washing house etc., LED light source due to
The advantages such as its high-luminous-efficiency, long service live, color true to nature, environmental protection are gradually substituting traditional incandescent lamp and are shining
Application in bright.
With the extensive use of LED, LED actuation techniques are also increasingly mature.LED drive circuit is used to export to LED load
To drive LED light to work normally, LED drive circuit mainly includes voltage regulator circuit, circuit for power conversion and control electricity for constant current
Road.The main switch that control circuit is used to control in circuit for power conversion is intermittently connected, so that circuit for power conversion be made to connect
The input voltage signal received is converted into constant current signal and exports to LED load, and voltage regulator circuit is for making output voltage values
It is constant.In voltage regulator circuit and circuit for power conversion, inductance element is essential.
But structure is complicated for current LED lamp drive circuit, circuit stability is poor and monitors less to entire circuit safety, leads
Cause entire circuit not safe enough, it is therefore desirable to improve.
Summary of the invention
A kind of raising safety and circuit are provided the purpose of the present invention is to solve above-mentioned the deficiencies in the prior art
A kind of LED projector lamp driving circuit that structure is simple, circuit stability is good.
To achieve the goals above, a kind of LED projector lamp driving circuit designed by the present invention, including with lower unit:
The DC power source input units of pulse are absorbed with positive and negative anodes reverse connecting protection, overcurrent protection, filtering；
The IC power supply circuit powered to each equipment in entire circuit；
Digital signal input unit,
The misconnection protection location that data input connection with digital signal input unit prevents high pressure to be connected on signal wire；
Connection with DC power source input units member simultaneously flows through electric current for detection line road, and utilizes amplifier magnification ratio,
Check out the total loop current detecting unit of current data；
Connection with DC power source input units is simultaneously used for detection line road voltage, and checks out voltage data using divider resistance
Total loop voltage detection unit；
It is driven respectively to LED modules with different colors lamp, provides constant current driving for the LED of corresponding color, and there is PWM and ANA tune simultaneously
4 road drivers of light；
The LED open circuit detection unit whether corresponding branch route opens a way is connected and is used to detect with every driver all the way；
Data for receiving in circuit are checked and are handled, and the monolithic of data after each test point checking computations out is then fed back
Machine；
The DAC digital-to-analogue conversion of corresponding 4 road driver work is finally obtained for exporting analog signal conversion with single-chip microcontroller connection
Device；
User obtains the temperature of the chip position of DAC digital analog converter and single-chip microcontroller, then corresponds to chip using temperature detection
Temperature, to realize two groups of temperature detecting units of multiple sets of address while detection；
For being connected between single-chip microcontroller and misconnection protection location, realizes the isolation of input data, thereby protect single-chip microcontroller isolation
Surge pulse on data line realizes the first data isolation input unit of the more stable operation of control system；
Wherein, the DC power source input units pass through total loop current detecting unit and total loop voltage detecting list respectively
Member is connect with single-chip microcontroller, and the single-chip microcontroller passes through the ANA simulation light modulation corresponding with 4 road drivers respectively of DAC digital analog converter
Signal end connection, and the corresponding pwm pulse signal end of 4 road drivers pulse light modulation signal detection end corresponding with single-chip microcontroller respectively
Connection, the output of 4 road drivers are separately connected the LED light of corresponding color, and in the output of 4 road drivers respectively by described
The test side of LED open circuit detection unit and single-chip microcontroller connects.
Further, the single-chip microcontroller is also connected with using line relay, and realizing to disconnect influences back-end circuit, is brushed simultaneously
The data outputting unit of address date herein is write, the data outputting unit passes through the second data isolation input unit connection unit
Part.
Further, the first data isolation input unit is for surge pulse signal on isolated data line.
Further, if the misconnection protection location is when high-voltage electricity wrong, for signal without output, circuit is defeated without trigger voltage
Enter, entire circuit does not work, and forms the protective device of open-circuit condition.
A kind of LED projector lamp driving circuit that the present invention obtains, the invention has the following advantages that
1) circuit structure is simple, more convenient operation, simultaneously because being provided with misconnection protection, input protection, temperature detection with this reality
Now entire circuit is safer, opens a way immediately once breaking down, finally improves the safety used, in addition setting simulation light modulation
Can be inside a circuit and noiseless with pwm light modulation, the entire circuit drives finally made are more stable, and with can realizing multiple groups
Location is detected simultaneously, improves detection efficiency.
Detailed description of the invention:
Fig. 1 is a kind of structure principle chart of LED projector lamp driving circuit in embodiment 1；
Fig. 2 is 4 paths of LEDs lamp drive circuit schematic diagram in embodiment 1；
Fig. 3 is the circuit diagram of DC power source input units in embodiment 1；
Fig. 4 is the circuit diagram of IC power supply circuit in embodiment 1；
Fig. 5 is the schematic diagram of two-way total loop detection unit in embodiment 1；
Fig. 6 is the circuit diagram of data outputting unit in embodiment 1；
Fig. 7 is the circuit diagram of single-chip microcontroller in embodiment 1；
Fig. 8 is the integrated circuit schematic diagram that two paths of data is isolated in embodiment 1；
Fig. 9 is the circuit diagram of two-way temperature detection in embodiment 1；
Figure 10 is the circuit diagram that analog signal rotates in embodiment 1.
In appended drawing reference: 1. DC power source input units；2.IC power supply circuit；3. misconnection protection location；4. total loop is electric
Press detection unit；5. driver；6.LED open circuit detection unit；7. single-chip microcontroller；8.DAC digital analog converter；9. temperature detection list
Member；10. the first data isolation input unit；11. the second data isolation input unit；12. data outputting unit；13. number letter
Number input unit；14. total loop current detecting unit.
Specific embodiment
Innovation and creation are described further below with reference to embodiment.
Embodiment 1:
As shown in Fig. 1-Figure 10, a kind of LED projector lamp driving circuit provided in this embodiment, including with lower unit:
The DC power source input units 1 of pulse are absorbed with positive and negative anodes reverse connecting protection, overcurrent protection, filtering；
The IC power supply circuit 2 powered to each equipment in entire circuit；
Digital signal input unit 13,
The misconnection protection location 3 that data input connection with digital signal input unit 13 prevents high pressure to be connected on signal wire；
Electric current is flowed through with 1 yuan of DC power source input units of connection and for detection line road, and utilizes amplifier magnification ratio,
Check out the total loop current detecting unit 14 of current data；
Connection with DC power source input units 1 is simultaneously used for detection line road voltage, and checks out voltage number using divider resistance
According to total loop voltage detection unit 4；
It is driven respectively to LED modules with different colors lamp, provides constant current driving for the LED of corresponding color, and there is PWM and ANA tune simultaneously
4 road drivers 5 of light；
The LED open circuit detection unit 6 for connecting with per driver 5 all the way and whether opening a way for detecting corresponding branch route；
Data for receiving in circuit are checked and are handled, and the monolithic of data after each test point checking computations out is then fed back
Machine 7；
The DAC digital-to-analogue for finally obtaining the work of corresponding 4 road driver 5 for exporting analog signal conversion with the connection of single-chip microcontroller 7 turns
Parallel operation 8；
User obtains the temperature of the chip position of DAC digital analog converter 8 and single-chip microcontroller 7, then corresponds to chip using temperature detection
Temperature, come realize multiple sets of address and meanwhile detection two groups of temperature detecting units 9；
For being connected between single-chip microcontroller 7 and misconnection protection location 3, realize the isolation of input data, thereby protect single-chip microcontroller 7 every
From surge pulse on data line, the first data isolation input unit 10 of the more stable operation of control system is realized；
Wherein, the DC power source input units 1 are examined by total loop current detecting unit 14 and total loop voltage respectively
It surveys unit 4 to connect with single-chip microcontroller 7, the single-chip microcontroller 7 passes through the ANA corresponding with 4 road drivers 5 respectively of DAC digital analog converter 8
Simulate the connection of dim signal end, and the corresponding pwm pulse signal end of 4 road driver 5 pulse light modulation corresponding with single-chip microcontroller 7 respectively
The connection of signal detection end, the output of 4 road drivers 5 are separately connected the LED light of corresponding color, and in the output of 4 road drivers 5 point
It is not connect by the LED open circuit detection unit 6 with the test side of single-chip microcontroller 7.
Further, the single-chip microcontroller 7 is also connected with using line relay, and realizing to disconnect influences back-end circuit, simultaneously
The data outputting unit 12 of address date herein is write with a brush dipped in Chinese ink, the data outputting unit 12 passes through the second data isolation input unit 11
Connection unit part 7.
Further, the first data isolation input unit 10 is for surge pulse signal on isolated data line.
Further, if the misconnection protection location 3 is when high-voltage electricity wrong, for signal without output, circuit is defeated without trigger voltage
Enter, entire circuit does not work, and forms the protective device of open-circuit condition.
This circuit structure is simple, more convenient operation, simultaneously because be provided with misconnection protection, input protection, temperature detection with
This realizes that entire circuit is safer, opens a way immediately once breaking down, finally improves the safety used, in addition setting simulation
Light modulation and pwm light modulation can be inside a circuit and noiseless, and the entire circuit drives finally made are more stable, and can realize more
Group address detects simultaneously, improves detection efficiency.And the applicant is it should be noted that each unit physical circuit belongs to this
Field conventional technical means, so not specifically describing.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of LED projector lamp driving circuit, it is characterised in that including with lower unit:
The DC power source input units (1) of pulse are absorbed with positive and negative anodes reverse connecting protection, overcurrent protection, filtering；
The IC power supply circuit (2) powered to each equipment in entire circuit；
Digital signal input unit (13),
The misconnection protection location that data input connection with digital signal input unit (13) prevents high pressure to be connected on signal wire
(3)；
Connection with DC power source input units (1) member simultaneously flows through electric current for detection line road, and utilizes amplifier times magnification
Number, checks out the total loop current detecting unit (14) of current data；
Connection with DC power source input units (1) is simultaneously used for detection line road voltage, and checks out voltage using divider resistance
The total loop voltage detection unit (4) of data；
It is driven respectively to LED modules with different colors lamp, provides constant current driving for the LED of corresponding color, and there is PWM and ANA tune simultaneously
4 road drivers (5) of light；
The LED open circuit detection unit for connecting with per driver (5) all the way and whether opening a way for detecting corresponding branch route
(6)；
Data for receiving in circuit are checked and are handled, and the monolithic of data after each test point checking computations out is then fed back
Machine (7)；
The DAC number of corresponding 4 road driver (5) work is finally obtained for exporting analog signal conversion with single-chip microcontroller (7) connection
Mode converter (8)；
User obtains the temperature of the chip position of DAC digital analog converter (8) and single-chip microcontroller (7), then corresponding using temperature detection
The temperature of chip, to realize two groups of temperature detecting units (9) of multiple sets of address while detection；
For being connected between single-chip microcontroller (7) and misconnection protection location (3), realizes the isolation of input data, thereby protect monolithic
Surge pulse on machine (7) isolated data line realizes the first data isolation input unit (10) of the more stable operation of control system；
Wherein, the DC power source input units (1) pass through total loop current detecting unit (14) and total loop electricity respectively
Pressure detection unit (4) is connect with single-chip microcontroller (7), and the single-chip microcontroller (7) is driven with 4 roads respectively by DAC digital analog converter (8)
Device (5) corresponding ANA simulation dim signal end connection, and the corresponding pwm pulse signal end of 4 road drivers (5) respectively with monolithic
The connection of machine (7) corresponding pulse light modulation signal detection end, the output of 4 road drivers (5) are separately connected the LED light of corresponding color,
And connected respectively by the test side of LED open circuit detection unit (6) and single-chip microcontroller (7) in the output of 4 road drivers (5)
It connects.
2. a kind of LED projector lamp driving circuit according to claim 1, which is characterized in that the single-chip microcontroller (7) also connects
It is connected to using line relay, realizing to disconnect influences back-end circuit, while writing with a brush dipped in Chinese ink the data outputting unit of address date herein
(12), the data outputting unit (12) passes through second data isolation input unit (11) connection unit part (7).
3. a kind of LED projector lamp driving circuit according to claim 1 or 2, which is characterized in that first data isolation
Input unit (10) is for surge pulse signal on isolated data line.
4. a kind of LED projector lamp driving circuit according to claim 1 or 2, which is characterized in that the misconnection protection is single
First (3) if being when high-voltage electricity wrong, signal are inputted without output, circuit without trigger voltage, entire circuit does not work, and forms open circuit shape
The protective device of state.
5. a kind of LED projector lamp driving circuit according to claim 3, which is characterized in that the misconnection protection location (3)
If being when high-voltage electricity wrong, signal are inputted without output, circuit without trigger voltage, entire circuit does not work, and forms open-circuit condition
Protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358945.5A CN109302773A (en) | 2018-11-15 | 2018-11-15 | A kind of LED projector lamp driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358945.5A CN109302773A (en) | 2018-11-15 | 2018-11-15 | A kind of LED projector lamp driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109302773A true CN109302773A (en) | 2019-02-01 |
Family
ID=65144579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811358945.5A Pending CN109302773A (en) | 2018-11-15 | 2018-11-15 | A kind of LED projector lamp driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996479A (en) * | 2019-12-31 | 2020-04-10 | 三一海洋重工有限公司 | Shore bridge projection lamp control method and system |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200314000Y1 (en) * | 2003-02-24 | 2003-05-22 | 김기정 | Short protection circuit for magnetic-type ballast of high intensity discharge lamp |
| US20060175986A1 (en) * | 2005-02-04 | 2006-08-10 | Samsung Electro-Mechanics Co., Ltd. | LED array driving apparatus and backlight driving apparatus using the same |
| JP2008108363A (en) * | 2006-10-26 | 2008-05-08 | Funai Electric Co Ltd | Laser diode control circuit |
| CN201585178U (en) * | 2009-12-17 | 2010-09-15 | 广州中大中鸣科技有限公司 | Control device of LED lamp based on DMX512 protocol |
| CN102326455A (en) * | 2009-02-23 | 2012-01-18 | 通用电气公司 | Fluorescent dimming ballast |
| US20120223644A1 (en) * | 2011-03-02 | 2012-09-06 | Green Solution Technology Co., Ltd. | Led driving circuit and short-circuit protection circuit |
| US20120262070A1 (en) * | 2011-04-13 | 2012-10-18 | Tdk Corporation | Light emitting element drive device |
| CN203027566U (en) * | 2012-12-29 | 2013-06-26 | 广东卓耐普智能技术股份有限公司 | Light-dimming driving circuit |
| US20130193879A1 (en) * | 2010-05-10 | 2013-08-01 | Innosys, Inc. | Universal Dimmer |
| CN203466999U (en) * | 2013-04-19 | 2014-03-05 | 深圳晶辰电子科技股份有限公司 | Resistance, voltage and PWM three-in-one LED intelligent dimming circuit |
| CN104039057A (en) * | 2014-06-30 | 2014-09-10 | 浙江福斯特电子科技有限公司 | Constant luminous flux LED module control circuit |
| CN104936361A (en) * | 2015-07-14 | 2015-09-23 | 汪静 | Full digitalization LED lighting source driving control system and technical scheme |
| CA2886969A1 (en) * | 2015-04-01 | 2016-10-01 | Modern Home Lighting, Inc. | Light emitting diode (led) torchiere lamp with overheat and overvoltage protection functions |
| CN205946252U (en) * | 2016-07-13 | 2017-02-08 | 深圳Tcl数字技术有限公司 | Led actuating device |
| CN206181427U (en) * | 2016-09-27 | 2017-05-17 | 哈尔滨理工大学 | Lighting control circuit based on control of telemetering measurement illuminance |
| CN206250765U (en) * | 2016-11-03 | 2017-06-13 | 苏州三星电子有限公司 | A kind of misconnection protection circuit and air-conditioning install circuit |
| CN108288846A (en) * | 2017-01-09 | 2018-07-17 | 展鹏科技股份有限公司 | A kind of optocoupler input protection circuit and its guard method |
| EP3383143A1 (en) * | 2017-03-31 | 2018-10-03 | Delta Light NV | Dimming system with plc modulator and demodulator |
| US20180310371A1 (en) * | 2017-04-19 | 2018-10-25 | Wanjiong Lin | DC Power Supply and its LED Lamp and Control System |
| CN210183593U (en) * | 2018-11-15 | 2020-03-24 | 常州格林照明股份有限公司 | LED projection lamp driving circuit |
-
2018
- 2018-11-15 CN CN201811358945.5A patent/CN109302773A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200314000Y1 (en) * | 2003-02-24 | 2003-05-22 | 김기정 | Short protection circuit for magnetic-type ballast of high intensity discharge lamp |
| US20060175986A1 (en) * | 2005-02-04 | 2006-08-10 | Samsung Electro-Mechanics Co., Ltd. | LED array driving apparatus and backlight driving apparatus using the same |
| JP2008108363A (en) * | 2006-10-26 | 2008-05-08 | Funai Electric Co Ltd | Laser diode control circuit |
| CN102326455A (en) * | 2009-02-23 | 2012-01-18 | 通用电气公司 | Fluorescent dimming ballast |
| CN201585178U (en) * | 2009-12-17 | 2010-09-15 | 广州中大中鸣科技有限公司 | Control device of LED lamp based on DMX512 protocol |
| US20130193879A1 (en) * | 2010-05-10 | 2013-08-01 | Innosys, Inc. | Universal Dimmer |
| US20120223644A1 (en) * | 2011-03-02 | 2012-09-06 | Green Solution Technology Co., Ltd. | Led driving circuit and short-circuit protection circuit |
| US20120262070A1 (en) * | 2011-04-13 | 2012-10-18 | Tdk Corporation | Light emitting element drive device |
| CN203027566U (en) * | 2012-12-29 | 2013-06-26 | 广东卓耐普智能技术股份有限公司 | Light-dimming driving circuit |
| CN203466999U (en) * | 2013-04-19 | 2014-03-05 | 深圳晶辰电子科技股份有限公司 | Resistance, voltage and PWM three-in-one LED intelligent dimming circuit |
| CN104039057A (en) * | 2014-06-30 | 2014-09-10 | 浙江福斯特电子科技有限公司 | Constant luminous flux LED module control circuit |
| CA2886969A1 (en) * | 2015-04-01 | 2016-10-01 | Modern Home Lighting, Inc. | Light emitting diode (led) torchiere lamp with overheat and overvoltage protection functions |
| CN104936361A (en) * | 2015-07-14 | 2015-09-23 | 汪静 | Full digitalization LED lighting source driving control system and technical scheme |
| CN205946252U (en) * | 2016-07-13 | 2017-02-08 | 深圳Tcl数字技术有限公司 | Led actuating device |
| CN206181427U (en) * | 2016-09-27 | 2017-05-17 | 哈尔滨理工大学 | Lighting control circuit based on control of telemetering measurement illuminance |
| CN206250765U (en) * | 2016-11-03 | 2017-06-13 | 苏州三星电子有限公司 | A kind of misconnection protection circuit and air-conditioning install circuit |
| CN108288846A (en) * | 2017-01-09 | 2018-07-17 | 展鹏科技股份有限公司 | A kind of optocoupler input protection circuit and its guard method |
| EP3383143A1 (en) * | 2017-03-31 | 2018-10-03 | Delta Light NV | Dimming system with plc modulator and demodulator |
| US20180310371A1 (en) * | 2017-04-19 | 2018-10-25 | Wanjiong Lin | DC Power Supply and its LED Lamp and Control System |
| CN210183593U (en) * | 2018-11-15 | 2020-03-24 | 常州格林照明股份有限公司 | LED projection lamp driving circuit |
Non-Patent Citations (1)
| Title |
|---|
| 张国雄;黄春晖;: "一种高稳定连续可调半导体激光器驱动源", 激光与红外, no. 02 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996479A (en) * | 2019-12-31 | 2020-04-10 | 三一海洋重工有限公司 | Shore bridge projection lamp control method and system |
| CN110996479B (en) * | 2019-12-31 | 2022-04-15 | 三一海洋重工有限公司 | Shore bridge projection lamp control method and system |
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