Deep sea serial communication adjustable LED lamp drive control board

Abstract

This utility model relates to a deep-sea LED driver control board with adjustable serial communication, belonging to the field of electronic control technology for deep-sea lighting equipment. It aims to solve the problems of existing deep-sea LED driver control boards being unable to adapt to small dry chambers, having low heat dissipation efficiency, and low integration. The device includes a control board module, a 40mm diameter circular driver board module, and a dry chamber encapsulation and heat dissipation structure. The control board module integrates a main control unit, multi-stage power supply, digital isolation, and RS485 serial communication unit. The circular driver board module integrates a boost driver and a current sampling feedback unit. The two are electrically connected via plug-in terminals. The overall volume is ≤20cm³, making it suitable for small deep-sea dry chambers with an inner diameter of 45mm. The dry chamber encapsulation and heat dissipation structure constructs a complete heat dissipation path from "driver board - heat sink - dry chamber shell - seawater." It features small size, high integration, high heat dissipation efficiency, and high control precision, and can be widely used in lighting systems for various miniature deep-sea exploration equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electronic control technology for deep-sea lighting equipment, specifically relating to a small-volume, high-power LED lamp driver control board adapted to deep-sea dry cabins. Background Technology

[0002] Deep-sea exploration technology has become a core development direction in marine science and technology, widely applied in various fields such as seabed mineral resource exploration, marine geological structure research, and deep-sea biological observation. Miniaturization, high reliability, and strong environmental adaptability are key technological requirements in this field for deep-sea equipment. The deep-sea environment is characterized by extremely high water pressure (up to 110 MPa at depths of tens of thousands of meters), high humidity, low temperature (stable year-round at 2-4℃), and extremely limited installation space. Core electronic components of the equipment must be encapsulated in sealed, pressure-resistant dry chambers to isolate them from seawater. Therefore, the electronic devices within the dry chambers must simultaneously meet the core requirements of compact size, high power handling capacity, and heat dissipation adapted to the sealed environment.

[0003] LED lights are the core lighting components of deep-sea exploration equipment. To adapt to the extremely low light environment of the deep sea, they are typically designed with a high power of ≥30W. The stable operation of high-power LEDs relies on a dedicated driver control board, which needs to integrate core functions such as power management, LED constant current drive, working status monitoring, and remote communication. However, existing deep-sea LED driver control boards have three major technical defects: First, size and layout defects. Split structures or integrated boards are not compact and cannot be adapted to small deep-sea dry chambers with a diameter ≤50mm, failing to meet the installation requirements of miniature deep-sea exploration equipment. Second, insufficient heat dissipation efficiency. Conventional solutions rely on static air or micro fans for heat dissipation within the dry chamber, which cannot meet the heat dissipation requirements of high-power LEDs working for extended periods, easily leading to overheating, shutdown, and reduced component lifespan. Third, low functional integration. Most solutions require an external independent control board to achieve communication and status monitoring functions, further increasing space occupation and assembly complexity within the dry chamber. All of these defects stem from the fact that existing solutions have not been customized for the structural and circuit co-design of "small-volume deep-sea dry chamber + high-power LED load + sealed low-temperature seawater environment". Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a deep-sea LED light driver control board that is small in size, highly integrated, has high heat dissipation efficiency, and low functional integration in small deep-sea dry tanks and enclosed environments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A deep-sea serial communication adjustable LED light driver control board includes a control board module, a circular driver board module, and a dry compartment packaging heat dissipation structure. The control board module is electrically connected to the circular drive board module, and both the control board module and the circular drive board module are fixedly installed inside the dry chamber packaging and heat dissipation structure. The circular drive board module is a circular PCB board with a diameter of 40mm. The circular PCB board integrates a boost drive unit and a current sampling feedback unit. The output end of the boost drive unit is provided with an LED interface for connecting an external LED. The current sampling feedback unit is connected in series in the power supply circuit of the LED. The signal output end of the current sampling feedback unit is connected to the signal input end of the control board module. The control board module is an irregularly shaped PCB board, which integrates a main control unit, a multi-stage power conversion unit, a digital isolation unit, and a serial communication unit. The input terminal of the multi-stage power conversion unit is provided with an external power input and a communication interface. The output terminal of the multi-stage power conversion unit is connected to the power supply terminals of the main control unit, the serial communication unit, the digital isolation unit, and the circular drive board module, respectively. The communication terminal of the main control unit is bidirectionally connected to the serial communication unit through the digital isolation unit. The control signal output terminal of the main control unit is connected to the control terminal of the boost drive unit of the circular drive board module. The dry chamber encapsulation heat dissipation structure includes a metal dry chamber shell, a thermally conductive silicone layer, and a fixing bracket. A heat dissipation block is attached to the back of the circular drive board module through the thermally conductive silicone layer. The heat dissipation block is set close to the inner wall of the metal dry chamber shell. The circular drive board module is provided with mounting holes. The control board module and the circular drive board module are fixed to the inside of the metal dry chamber shell through the fixing bracket and the mounting holes.

[0006] As a further embodiment of this utility model: the boost drive unit includes an XL6006E1 LED driver chip, a power inductor L1, a freewheeling diode D1, a Zener diode D2, and a filter capacitor bank; the voltage input pin of the XL6006E1 LED driver chip is connected to a 24V DC power supply input via the filter capacitor bank; the switch pin of the XL6006E1 LED driver chip is connected to one end of the power inductor L1; the other end of the power inductor L1 is connected to the anode of the freewheeling diode D1; the cathode of the freewheeling diode D1 is connected to the cathode of the Zener diode D2; the anode of the Zener diode D2 is grounded; the cathode of the freewheeling diode D1 serves as the output terminal of the boost drive unit and is connected to the positive terminal of an external LED; the control pin of the XL6006E1 LED driver chip is connected to the control signal output terminal of the main control unit.

[0007] As a further embodiment of this utility model: the current sampling feedback unit includes an MCP6291T-E / OT type operational amplifier; the output terminal of the MCP6291T-E / OT type operational amplifier is connected to the inverting input terminal to form a signal feedback structure, and the output terminal of the MCP6291T-E / OT type operational amplifier serves as the signal output terminal of the current sampling feedback unit and is connected to the feedback signal input terminal of the main control unit.

[0008] As a further embodiment of this utility model: the multi-stage power conversion unit includes an RT9069-50GB type first voltage regulator module and a TPRT9193-33GB type second voltage regulator module; the input terminal of the first voltage regulator module is connected to a 24V DC power input, and the output terminal of the first voltage regulator module outputs a 5V DC voltage; the input terminal of the second voltage regulator module is connected to the 5V output terminal of the first voltage regulator module, and the output terminal of the second voltage regulator module outputs a 3.3V DC voltage.

[0009] As a further aspect of this utility model: the main control unit adopts an STM32F030F4P6TR microcontroller, the power supply pin of the microcontroller is connected to the 3.3V output terminal of the second voltage regulator module, the PWM signal output terminal of the microcontroller is connected to the control terminal of the boost drive unit, and the feedback signal input terminal of the microcontroller is connected to the signal output terminal of the current sampling feedback unit.

[0010] As a further embodiment of this utility model: the digital isolation unit adopts an ADUM1210BRZ-RL7 digital isolation chip, and the serial communication unit adopts an RS485 communication module based on the MAX13487 chip; the first power supply terminal of the digital isolation chip is connected to a 3.3V DC voltage, and the signal terminal is connected to the serial transceiver terminal of the main control unit; the second power supply terminal of the digital isolation chip is connected to a 5V DC voltage, and the signal terminal is connected to the signal terminal of the RS485 communication module.

[0011] As a further embodiment of this utility model: the edge of the circular drive board module is provided with a 2-pin female header interface and a 4-pin female header interface, and the edge of the control board module is provided with a 2-pin single row of pins that matches the 2-pin female header interface and a 4-pin single row of pins that matches the 4-pin female header interface. The control board module and the circular drive board module are electrically connected and mechanically positioned through the single row of pins and the corresponding female header interfaces.

[0012] As a further embodiment of this utility model: the heat sink is a semi-circular aluminum alloy heat sink, the flat side of the semi-circular aluminum alloy heat sink is tightly attached to the back of the circular drive board module through a thermally conductive silicone layer, and the arc side of the semi-circular aluminum alloy heat sink is completely attached to the circular inner wall of the metal dry chamber shell.

[0013] As a further embodiment of this utility model: the outer shell of the metal dry chamber is a cylindrical sealed chamber with a pressure resistance of not less than 45MPa, the inner diameter of the outer shell of the metal dry chamber is not less than 45mm, and the overall volume of the integrated control board module and the circular drive board module is not greater than 20cm³.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. Significantly improved adaptability to small size: This utility model adopts a compact layout of split irregular shape + circular PCB. The drive board adopts a circular design with a diameter of 40mm, and the control board adopts an irregular and simplified design adapted to dry cabins. After integration, the overall space occupied in the dry cabin is ≤20cm³, which can be directly installed in a standard small deep-sea dry cabin with a diameter of 45mm, perfectly solving the technical problem that existing technologies cannot adapt to small dry cabins with narrow space.

[0015] 2. Significantly optimized heat dissipation efficiency: This invention constructs a complete heat dissipation path from "drive board - thermally conductive silicone layer - metal heat sink - thermally conductive silicone layer - metal dry chamber shell - low-temperature seawater", achieving efficient passive heat dissipation without the need for a fan. Actual tests show that it can support ≥50W LED lights to work stably for more than 24 hours continuously in a deep-sea environment, with the drive board temperature always maintained within a safe range. Compared with existing air cooling solutions, circuit stability is greatly improved, and the failure rate of equipment during continuous operation is significantly reduced.

[0016] 3. Excellent driving and communication performance: This utility model uses the XL6006E1 driving circuit in conjunction with the MCP6291 high-precision signal conditioning circuit to achieve a wide range of constant current driving and stepless brightness adjustment for LED lights from 0-50W, with the minimum driving power reduced to 1W; at the same time, the ADUM1210 digital isolation circuit achieves electrical isolation between control signals and communication signals, making the bit error rate of RS485 serial communication signals ≤0.005%, which can stably adapt to the complex environment of strong electromagnetic interference in the deep sea.

[0017] 4. High integration and significant cost advantages: This utility model integrates all core functions such as power management, constant current drive, status monitoring, serial communication, and isolation protection within a single device, eliminating the need for external modules and significantly reducing assembly complexity. The integrated design reduces the use of external modules, wires, and fasteners, resulting in a significant reduction in hardware costs per unit compared to existing split solutions. Furthermore, it eliminates the need to modify existing small deep-sea dry cabins, greatly reducing adaptation and development costs as well as subsequent operation and maintenance costs.

[0018] 5. Significant Industry Impact: The small size and high reliability design of this utility model provide a standardized lighting control solution suitable for micro deep-sea exploration equipment (such as small ROVs and deep-sea sensor carriers), helping deep-sea exploration equipment to upgrade towards lightweight and miniaturization, and promoting technological iteration in the field of marine science and technology; at the same time, stable lighting can improve the operational efficiency of deep-sea observation and sample collection, and reduce the energy consumption and carbon emissions of ships operating at sea. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top-level schematic diagram of the deep-sea serial communication adjustable LED light driver board described in this invention. Figure 2 for Figure 1 A schematic diagram of the bottom layer of the deep-sea serial communication adjustable LED light driver board; Figure 3 for Figure 2 A side view of the adjustable LED light driver board for deep-sea serial communication. Figure 4 This is a top view schematic diagram of the deep-sea serial communication adjustable LED light control board described in this invention; Figure 5 for Figure 4 A schematic diagram of the bottom view of the deep-sea serial communication adjustable LED light control board; Figure 6 for Figure 4 A schematic diagram of the adjustable LED light control board for deep-sea serial communication. Figure 7 for Figure 1 and Figure 4 Top view schematic diagram of the combination of the deep-sea serial communication adjustable LED light driver board and control board; Figure 8 for Figure 7 A schematic diagram of the bottom view of the combination of the deep-sea serial communication adjustable LED light driver board and control board; Figure 9 for Figure 8 A side view of the combination of the deep-sea serial communication adjustable LED light driver board and control board; Figure 10 Circuit diagram for a deep-sea serial communication adjustable LED light control board; Figure 11This is a circuit diagram for an adjustable LED driver board with serial communication for deep-sea applications.

[0021] The diagram shows: 1. MOSFET 2N7002, 2. MCP6291T-E / OT operational amplifier, 3. MOSFET 4410, 4. 24V power supply output 2-pin 2.54mm pitch female connector for the control board, 5. SS56F diode, 6. Power current limiting resistor, 7. XL6006E1 LED driver chip, 8. Mounting holes ×2, 9. 4-pin 2.54mm pitch female connector for control board output signal, 10. LED lamp interface, 11. Tantalum capacitor, 12. Filter inductor, 13. SS56-C reverse connection protection diode, 14. Zener diode, 15. 22uf electrolytic capacitor, 16. 4-pin 3.81mm pitch external input power and communication interface, 17. 2-pin single-row connector for driver board, 18. Program download interface, 19. B2405 isolated regulated power supply module, 20. MAX13487 communication chip, 21. ADUM1210 digital isolation chip for 3.3V to 5V level conversion, 22. 4-pin single row connector for driver board, 23. STM32F030F4P6TR main control chip, 24. TPRT9193-33GB 5V to 3.3V voltage regulator chip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figures 1-11As shown, this utility model provides a deep-sea serial communication adjustable LED light driver control board, which consists of three parts: a control board, a 40mm diameter circular driver board, and a deep-sea dry cabin encapsulation and heat dissipation structure. The three parts are integrated to adapt to the sealed and narrow space environment of a small deep-sea dry cabin: the control board is responsible for signal control, power conversion and communication; the driver board realizes constant current driving and current monitoring of high-power LEDs; the dry cabin encapsulation and heat dissipation structure completes the component fixation and heat dissipation, which is cooled by seawater.

[0026] Technical implementation of each functional module (1) Control board module (corresponding to) Figure 1 Schematic diagram of the control board; Figure 2 , 5 : Control board PCB front and back Figure 10 (Circuit diagram) Structural components: STM32F030F4P6TR main control unit, RT9069-50GB 24V to 5V power supply module, TPRT9193-33GB 5V to 3V3 power supply module, ADUM1210BRZ-RL7 digital isolation circuit, RS485 communication module, LED status indicator, 4-pin terminal block, filter capacitors (C2, C3, C6, etc.), pull-up resistor R10 (10kΩ).

[0027] Location and Connections: The control board is an irregularly shaped PCB, with the STM32 main control unit centrally located. The RT9069 power module is near the 24V power input terminal; its pin 1 (VCC) is connected to the 24V input, and its pin 5 (VOUT) outputs 5V, filtered by a parallel C3 (100nF). The TPRT9193 power module is adjacent to the RT9069; its pin 1 (VIN) is connected to 5V, and its pin 5 (VOUT) outputs 3V3, filtered by parallel C21 and C22 (106 / 104) before being connected to the STM32's 3V output. 3 pins; The ADUM1210 isolation circuit is located between the STM32 and the RS485 module. The VDD1 (3V3) of the isolation circuit is connected to the main controller, and the VDD2 (5V) is connected to the RS485. The DI / R0 pins are connected to the TX1 / RX1 of the main controller, respectively. The 4-pin terminal block is arranged on the edge of the control board, of which 2 pins are connected to the 24V power supply and 2 pins are connected to the signal (PWM1, current feedback), which are connected to the corresponding terminals of the driver board. The LED indicator is connected to the LED_EN pin of the STM32 via R5 (10kΩ).

[0028] Component functions: The STM32 main control unit outputs PWM control signals, receives current feedback signals, and implements logic control; the RT9069 / TPRT9193 completes multi-stage power conversion, providing adaptive voltages for different modules; the ADUM1210 achieves electrical isolation between control signals and communication signals to avoid interference; the RS485 module enables communication with external devices; the terminal blocks enable electrical connection between the control board and the driver board; and LED indicators provide feedback on the operating status of the control board.

[0029] (2) 40mm diameter circular drive board module Structural components: XL6006E1 LED driver chip, 47μH inductor L1, SS56F freewheeling diode D1, IN5365BRLG Zener diode D2, 70mΩ / 35W sampling resistor R4, MCP6291T-E / OT operational amplifier, 240μF / 50V filter capacitor C3, 4-pin terminal block.

[0030] Position and Connection: The driver board is a 40mm diameter circular PCB. The XL6006E1 chip is centrally located and a semi-circular heatsink is fixed to the chip surface. The semi-circular heatsink is attached to the inner wall of the dry chamber shell with thermal grease. Pin 4 (VIN) of the XL6006E1 is filtered by C3 and connected to a 24V input. Pin 2 (SW) is connected to one end of L1. The other end of L1 is connected to the positive terminal of D1 (freewheeling) and the negative terminal of D2 (voltage regulation). The positive terminal of D2 is grounded. The output terminal is filtered by C1 (1μF) and C2 (22μF) in parallel and then connected to the positive terminal of the LED. R4 is connected in series between the negative terminal of the LED and ground. The voltage across its two ends is connected to the input pin of the MCP6291 operational amplifier. The output terminal of the amplifier is connected to the current feedback pin of the control board. The 4-pin terminal block is connected to the corresponding terminal block of the control board.

[0031] Component functions: XL6006E1, together with L1 and D1, realizes the boost conversion from 24V to the LED operating voltage; D2 limits the output voltage to ensure the stability of the LED operating voltage; R4 collects the LED circuit current and converts the current signal into a voltage signal; MCP6291 amplifies and conditions the voltage signal to improve the feedback accuracy; the filter capacitor suppresses voltage fluctuations and ensures circuit stability.

[0032] (3) Dry compartment encapsulation heat dissipation structure Structural components: metal dry chamber shell (pressure resistant ≥45MPa), 0.5mm thick thermally conductive silicone layer, and plastic fixing bracket.

[0033] Position and connection: The pins of the control board are inserted into the socket of the driver board. The mounting holes on the driver board are fixed to the central area inside the dry chamber by M3 copper pillars. A 0.5mm thick thermally conductive silicone layer is attached to the back of the driver board, and then a semi-circular aluminum alloy heat sink is attached to it. The heat sink is in close contact with the inner wall of the dry chamber shell. The dry chamber shell is waterproofed by a sealing cover.

[0034] Component functions: The metal dry chamber shell isolates seawater and withstands deep-sea pressure; the thermally conductive silicone layer fills the gap between the drive plate, heat sink, and shell to improve heat conduction efficiency; the fixed bracket enables stable installation of the control board.

[0035] Overall workflow: 1. Power Input and Conversion: A 24V external power supply is connected to the 24V input terminal of the driver board, which is converted to 5V by the RT9069 power module to power the MOSFETs and operational amplifiers. A 24V input is provided to the control board through the busbar terminals on the driver board, which is also converted to 5V by the RT9069 power module. One path supplies the RS485 communication module and the ADUM1210 isolation circuit, while the other path is converted to 3V3 by the TPRT9193 module to supply the STM32 main control unit.

[0036] 2. Control signal transmission: The STM32 main control unit outputs PWM control signals according to the external RS485 Modbus protocol communication instructions (received after isolation by ADUM1210), and transmits them through the terminal block to the second-stage MOSFET and operational amplifier of the driver board to convert them into analog signals and enter the control pin of the XL6006E1 chip to realize the brightness adjustment of the LED.

[0037] 3. LED driving and current monitoring: The XL6006E1 chip on the driver board receives the PWM signal and converts it into an analog signal. Then, in conjunction with L1 and D1, it boosts the 24V to the LED operating voltage (limited by the D2 Zener diode) to drive the LED to light up.

[0038] Heat dissipation process: The heat generated by the drive board is dissipated through thermal grease-heat sink-thermal grease in close contact with the metal dry chamber shell, and then from the shell to the outside deep seawater (water temperature about 2-4℃), reducing the temperature of the drive board.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment have been appropriately combined to form other embodiments that are easily understood by those skilled in the art.

Claims

1. A deep-sea serial communication adjustable LED light driver control board, characterized in that, This includes a control board module, a circular drive board module, and a dry chamber packaging and heat dissipation structure. The control board module is electrically connected to the circular drive board module, and both the control board module and the circular drive board module are fixedly installed inside the dry chamber packaging and heat dissipation structure. The circular drive board module is a circular PCB board with a diameter of 40mm. The circular PCB board integrates a boost drive unit and a current sampling feedback unit. The output end of the boost drive unit is provided with an LED interface for connecting an external LED. The current sampling feedback unit is connected in series in the power supply circuit of the LED. The signal output end of the current sampling feedback unit is connected to the signal input end of the control board module. The control board module is an irregularly shaped PCB board, which integrates a main control unit, a multi-stage power conversion unit, a digital isolation unit, and a serial communication unit. The input terminal of the multi-stage power conversion unit is provided with an external power input and a communication interface. The output terminal of the multi-stage power conversion unit is connected to the power supply terminals of the main control unit, the serial communication unit, the digital isolation unit, and the circular drive board module, respectively. The communication terminal of the main control unit is bidirectionally connected to the serial communication unit through the digital isolation unit. The control signal output terminal of the main control unit is connected to the control terminal of the boost drive unit of the circular drive board module. The dry chamber encapsulation heat dissipation structure includes a metal dry chamber shell, a thermally conductive silicone layer, and a fixing bracket. A heat dissipation block is attached to the back of the circular drive board module through the thermally conductive silicone layer. The heat dissipation block is set close to the inner wall of the metal dry chamber shell. The circular drive board module is provided with mounting holes. The control board module and the circular drive board module are fixed to the inside of the metal dry chamber shell through the fixing bracket and the mounting holes.

2. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The boost drive unit includes an XL6006E1 LED driver chip, a power inductor L1, a freewheeling diode D1, a Zener diode D2, and a filter capacitor bank. The voltage input pin of the XL6006E1 LED driver chip is connected to a 24V DC power supply via the filter capacitor bank. The switching pin of the XL6006E1 LED driver chip is connected to one end of the power inductor L1. The other end of the power inductor L1 is connected to the anode of the freewheeling diode D1. The cathode of the freewheeling diode D1 is connected to the cathode of the Zener diode D2. The anode of the Zener diode D2 is grounded. The cathode of the freewheeling diode D1 serves as the output terminal of the boost drive unit and is connected to the positive terminal of an external LED. The control pin of the XL6006E1 LED driver chip is connected to the control signal output terminal of the main control unit.

3. The deep-sea serial communication adjustable LED light driver control board according to claim 2, characterized in that, The current sampling feedback unit includes an MCP6291T-E / OT type operational amplifier; the output terminal of the MCP6291T-E / OT type operational amplifier is connected to the inverting input terminal to form a signal feedback structure, and the output terminal of the MCP6291T-E / OT type operational amplifier serves as the signal output terminal of the current sampling feedback unit and is connected to the feedback signal input terminal of the main control unit.

4. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The multi-stage power conversion unit includes an RT9069-50GB type first voltage regulator module and a TPRT9193-33GB type second voltage regulator module. The input terminal of the first voltage regulator module is connected to a 24V DC power input, and the output terminal of the first voltage regulator module outputs a 5V DC voltage. The input terminal of the second voltage regulator module is connected to the 5V output terminal of the first voltage regulator module, and the output terminal of the second voltage regulator module outputs a 3.3V DC voltage.

5. The deep-sea serial communication adjustable LED light driver control board according to claim 4, characterized in that, The main control unit adopts an STM32F030F4P6TR microcontroller. The power supply pin of the microcontroller is connected to the 3.3V output terminal of the second voltage regulator module. The PWM signal output terminal of the microcontroller is connected to the control terminal of the boost drive unit. The feedback signal input terminal of the microcontroller is connected to the signal output terminal of the current sampling feedback unit.

6. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The digital isolation unit uses an ADUM1210BRZ-RL7 digital isolation chip, and the serial communication unit uses an RS485 communication module based on the MAX13487 chip. The first power supply terminal of the digital isolation chip is connected to a 3.3V DC voltage, and the signal terminal is connected to the serial transceiver terminal of the main control unit. The second power supply terminal of the digital isolation chip is connected to a 5V DC voltage, and the signal terminal is connected to the signal terminal of the RS485 communication module.

7. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The circular drive board module has a 2-pin female header interface and a 4-pin female header interface on its edge. The control board module has a 2-pin single-row pin that matches the 2-pin female header interface and a 4-pin single-row pin that matches the 4-pin female header interface on its edge. The control board module and the circular drive board module are electrically connected and mechanically positioned through the single-row pins and the corresponding female header interfaces.

8. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The heat sink is a semi-circular aluminum alloy heat sink. The flat side of the semi-circular aluminum alloy heat sink is tightly attached to the back of the circular drive board module through a thermally conductive silicone layer, and the arc side of the semi-circular aluminum alloy heat sink is completely attached to the circular inner wall of the metal dry chamber shell.

9. The deep-sea serial communication adjustable LED light driver control board according to claim 1, characterized in that, The outer shell of the metal dry chamber is a cylindrical sealed chamber with a pressure resistance of not less than 45MPa. The inner diameter of the outer shell of the metal dry chamber is not less than 45mm. The overall volume of the integrated control board module and the circular drive board module is not greater than 20cm³.

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