Digital power supply device for unmanned ship communication equipment

Abstract

This application relates to the field of unmanned surface vessel (USV) power supply technology and discloses a digital power supply device for USV communication equipment. The device includes an onboard power supply, a DC EMI filter, and a DC / DC isolation module. It also includes a current and voltage detection circuit for detecting output current and voltage; a CPU for identifying faults in a power distribution circuit based on the output current and voltage, and controlling the opening or closing of the output tripping drive circuit; an isolated communication port for transmitting the output current and voltage to the onboard control computer; a multi-channel output tripping drive circuit, each connected to the current and voltage detection circuit and the CPU, for driving the tripping / closing of each power distribution circuit based on the GPIO signals output by the CPU; and a multi-channel output overcurrent and short-circuit protection circuit, each connected to the output tripping drive circuit and the communication module, for protecting multiple communication modules. This method enables real-time monitoring of the onboard power supply's operating status and the execution of alarm and protection actions.

Description

Technical Field

[0001] This application relates to the field of unmanned surface vessel (USV) power technology, and more specifically, to a digital power supply device for USV communication equipment. Background Technology

[0002] With rapid technological advancements, unmanned surface vessels (USVs) have achieved increasingly mature maneuverability and intelligent control technologies. Their small size, high stealth capabilities, and high speed are unmatched by manned vessels. USVs can also perform specialized missions and have garnered significant attention from many countries.

[0003] Communication payloads are crucial for unmanned platforms, serving as their "lifeline." Communication provides effective and reliable information support for command and control, intelligence transmission, and ultimately enables unmanned surface vessels to achieve their combat missions.

[0004] Unmanned surface vessels (USVs) can utilize two communication methods: line-of-sight (LAS) and beyond-LAS. Both LAS and beyond-LAS communication are typically configured with two to three different communication modes to accommodate complex sea conditions and diverse scenarios. Therefore, USV communication equipment includes multiple communication modules (usually hardware modules) to implement one or more communication modes, and intelligently switches between them based on the application scenario. The power supply system for USV communication equipment must be able to power multiple communication modules and intelligently switch between them.

[0005] like Figure 1 As shown, conventional unmanned surface vessel (USV) communication equipment is powered by an onboard power supply. After voltage regulation by an isolated power module, power is supplied to five communication modules within the USV communication equipment, with each module implementing a different communication protocol. However, this power distribution method for USV communication equipment has the following drawbacks: 1) Unable to promptly shut off the power supply to communication modules in non-communication states based on communication characteristics and methods, thereby reducing energy waste and extending the unmanned surface vessel's loiter time; 2) Inability to promptly identify and disconnect power to faulty modules, resulting in poor reliability: Conventional onboard power supply methods cannot provide overcurrent and short-circuit protection; failure to promptly disconnect power to a faulty communication module (or unit) may affect the operation of other modules (or units) with the same power output, thereby reducing the reliability of the system. 3) Lack of operational status monitoring function and lack of fault analysis data: Traditional mobile power supply methods cannot monitor the parameters of each power supply circuit and the internal temperature of the power supply in real time, execute alarm and protection actions, and cannot provide support for equipment operation status monitoring and fault location, resulting in poor maintainability. 4) The power distribution lacks timing control. When all modules (or units) in the communication equipment are powered on at the same time, the starting current is large, which can easily generate a large surge current in the main power supply circuit, causing the overcurrent protection device to malfunction and resulting in power-on failure. 5) The onboard control computer cannot promptly understand the operating status of each module (or unit) of the communication equipment and the operating status of the power supply through the communication port. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a digital power supply device for unmanned surface vessel (USV) communication equipment, which can monitor the operating status of the onboard power supply in real time and perform alarm and protection actions.

[0007] To achieve the above objectives, according to a first aspect of the present invention, a digital power supply device for an unmanned surface vessel (USV) communication device is provided, comprising: Onboard power supply, used to power the communication equipment of the unmanned surface vessel; DC EMI, connected to the onboard power supply, is used to filter out electromagnetic noise output from the onboard power supply or electromagnetic interference conducted from the power line to the unmanned surface vessel's communication equipment. The DC / DC isolation module, connected to the DC EMI, is used to convert the output voltage of the onboard power supply into the power supply voltage required by the unmanned surface vessel's communication equipment. The current and voltage detection circuit, connected to the DC / DC isolation module, is used to detect the output current and output voltage. The CPU is connected to the current and voltage detection circuit and the DC / DC isolation module, respectively. It is used to identify the fault of a power distribution circuit based on the output current and output voltage, and control the opening or closing of the output circuit. An isolated communication port is used to transmit output current and output voltage to the onboard control computer; A multi-output circuit breaker opening and closing drive circuit, each output circuit breaker opening and closing drive circuit is connected to the current and voltage detection circuit and the CPU respectively, and is used to realize the opening / closing drive of each power distribution circuit according to the GPIO signal output by the CPU. The multi-output overcurrent and short-circuit protection circuit is connected to one output opening and closing drive circuit and one communication module respectively, and is used to protect the multi-channel communication module.

[0008] Furthermore, the digital power supply device of the aforementioned unmanned surface vessel communication equipment also includes a temperature sensor, which is connected to the CPU and used to detect the temperature inside the onboard power supply.

[0009] Furthermore, the output opening and closing drive circuit includes a MOSFET, and the switching of the MOSFET is controlled according to the GPIO signal output by the CPU.

[0010] Furthermore, the output overcurrent and short-circuit protection circuit includes a fuse, a TVS diode, and an overcurrent and short-circuit hiccup protection circuit. The fuse provides short-circuit protection for the power input terminal. The TVS diode serves as the output spike voltage protection section, absorbing and processing the voltage spike energy between the output voltage of the digital power supply device and zero. The overcurrent and short-circuit hiccup protection circuit includes a first NMOS transistor and an NPN transistor. The first NMOS transistor limits the current, reducing the current surge at power-on. The NPN transistor detects the voltage drop across the first NMOS transistor. When the current flowing through the first NMOS transistor causes its voltage drop to exceed the turn-on voltage of the NPN transistor, the NPN transistor turns on, the voltage between the gate and source of the first NMOS transistor is low, and the first NMOS transistor turns off.

[0011] Furthermore, one end of the fuse is connected to the output terminal of the MOSFET, and the other end is connected to one end of the TVS diode and the output voltage of the digital power supply device; the other end of the TVS diode is grounded. The overcurrent and short-circuit protection circuit also includes a first resistor, a first capacitor, a first Zener diode, a second resistor, a second capacitor, a third resistor, a fourth resistor, a third capacitor, a second Zener diode, and a fifth resistor. One end of the first resistor is connected to the output voltage of the digital power supply device, and the other end is connected to one end of the first capacitor, the cathode of the first Zener diode, one end of the second resistor, the collector of the NPN transistor, and the first N... The gate of the MOSFET is connected to the ground, the other end of the first capacitor is grounded, the anode of the first Zener diode is grounded, the other end of the second resistor is grounded, the emitter of the NPN transistor is grounded, the source of the first NMOS transistor is grounded, and the drain of the first NMOS transistor is grounded. One end of the second capacitor, one end of the third resistor, and the anode of the second Zener diode are connected to the base of the NPN transistor, respectively. The other end of the second capacitor and the other end of the third resistor are grounded. The cathode of the second Zener diode is connected to one end of the fifth resistor, and the other end of the fifth resistor is grounded. The anode of the third capacitor is connected to the output voltage of the digital power supply device, and the cathode is grounded.

[0012] Furthermore, the output overcurrent and short-circuit protection circuit also includes an output soft-start control circuit, which includes a PMOS transistor and a second NMOS transistor. The source of the PMOS transistor is connected to the output terminal of the DC / DC isolation module, the drain of the PMOS transistor is connected to the output terminal of the MOS transistor, and the gate of the PMOS transistor is connected to the drain of the second NMOS transistor. The source of the second NMOS transistor is grounded, and the gate of the second NMOS transistor is connected to the GPIO output terminal of the CPU.

[0013] Furthermore, the output soft-start control circuit also includes a third Zener diode, a sixth resistor, a fourth capacitor, a fifth capacitor, and a seventh resistor. The negative terminal of the third Zener diode, one end of the seventh resistor, and one end of the fourth capacitor are respectively connected to the source of the PMOS transistor. The positive terminal of the third Zener diode, the other end of the seventh resistor, the other end of the fourth capacitor, and one end of the sixth resistor are respectively connected to the gate of the PMOS transistor. The other end of the sixth resistor is connected to the drain of the second NMOS transistor. One end of the fifth capacitor is connected to the drain of the PMOS transistor, and the other end is grounded.

[0014] Furthermore, the CPU is also used to control the power-on / power-off timing of the communication module.

[0015] Furthermore, the communication equipment of the unmanned surface vessel requires a power supply voltage of +28V, +12V, or +3.3V.

[0016] Furthermore, the current and voltage detection circuit includes a current sensor and a voltage divider resistor.

[0017] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: (1) The present invention provides a digital power supply device for an unmanned surface vessel communication device. By setting an output opening and closing drive circuit connected to the CPU, a current and voltage detection circuit, and an output overcurrent and short circuit protection circuit connected to the output opening and closing drive circuit, the device provides power distribution circuit opening / closing control for each communication module in the unmanned surface vessel communication device, and monitors the power supply operation status in real time (including output voltage, output current, and internal temperature of the onboard power supply). The device uploads the data to the onboard control computer through an isolated communication port, and can perform alarm and protection actions.

[0018] (2) The present invention provides a digital power supply device for an unmanned surface vessel (USV) communication device, which can cut off the power supply to the communication module in the non-communication state (the power consumption of the communication module in the non-communication state is generally between 5W and 50W) according to the communication mode and characteristics, thereby achieving low power consumption of the communication device, reducing energy waste, and extending the loiter time of the USV. For example, when the power supply is overheated or the battery is insufficient, the onboard control computer controls the communication equipment to reduce the transmission power or frequency, reduce power consumption, and extend the loiter time of the USV.

[0019] (3) The present invention provides a digital power supply device for unmanned surface vessel communication equipment, which can provide power line filtering function by setting DC EMI, and cut off the electromagnetic interference conduction coupling path between the isolation power module and external power equipment (shared onboard power equipment).

[0020] (4) The present invention provides a digital power supply device for unmanned surface vessel communication equipment, which can control the power-on / power-off sequence of each communication module, suppress the start-up surge current of the downstream equipment, and cut off the downstream short circuit or overload load in time to realize the protection of the power supply system.

[0021] (5) The digital power supply device for unmanned surface vessel communication equipment provided by the present invention can provide power for batteries, switching power supplies or engine rectifier outputs. It is an independent power supply system with large voltage fluctuations. It needs to provide stable and safe energy to the loads of each communication module through an isolated voltage regulator.

[0022] (6) The present invention provides a digital power supply device for unmanned surface vessel communication equipment. By using a MOS transistor as a switch in the output opening and closing drive circuit, the power supply of each communication module is controlled to open / close (or open / close action). It has an output soft start function, which can reduce the power-on inrush current of the switching power supply.

[0023] (7) The present invention provides a digital power supply device for an unmanned surface vessel communication device, which can supply power to a large-capacity load through an output overcurrent and short-circuit protection circuit and a power-on slow-start function switch. When an overcurrent or short circuit occurs in a certain load, the output overcurrent and short-circuit protection circuit performs a "hiccup" protection in real time, identifies the fault through the current detection circuit, cuts off the load through the on / off control of the power supply of each communication module, and transmits the fault through the isolated communication port. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a power distribution diagram for a conventional unmanned surface vessel (USV) communication device. Figure 2 A schematic diagram of the internal structure of a digital power supply device for an unmanned surface vessel communication device provided in this application embodiment; Figure 3 A schematic diagram of an output opening / closing drive circuit provided for an embodiment of this application; Figure 4 A schematic diagram of the output overcurrent and short-circuit protection circuit provided in an embodiment of this application; Figure 5 This is a schematic diagram of the output soft-start control circuit provided in an embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0027] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] like Figure 2 As shown, a digital power supply device for an unmanned surface vessel (USV) communication device is provided, the device comprising: Onboard power supply, used to power the communication equipment of the unmanned surface vessel; DC EMI (electromagnetic interference), connected to the onboard power supply, is used to filter out electromagnetic noise output from the onboard power supply or electromagnetic interference conducted from the power line to the unmanned surface vessel's communication equipment. The DC / DC isolation module, connected to the DC EMI, is used to convert the output voltage of the onboard power supply into the power supply voltage required by the unmanned surface vessel's communication equipment. The current and voltage detection circuit, connected to the DC / DC isolation module, is used to detect the output current and output voltage. The CPU is connected to the current and voltage detection circuit and the DC / DC isolation module, respectively. It is used to identify the fault of a power distribution circuit based on the output current and output voltage, and control the opening or closing of the output circuit. Temperature sensor, connected to the CPU, is used to detect the internal temperature of the onboard power supply. An isolated communication port is used to transmit the output current and voltage, as well as the internal temperature of the onboard power supply, to the onboard control computer. A multi-output circuit breaker opening and closing drive circuit, each output circuit breaker opening and closing drive circuit is connected to the current and voltage detection circuit and the CPU respectively, and is used to realize the opening / closing drive of each power distribution circuit according to the GPIO signal output by the CPU. The multi-output overcurrent and short-circuit protection circuit is connected to one output opening and closing drive circuit and one communication module respectively, and is used to protect the multi-channel communication module.

[0029] The onboard power supply is generally a battery or generator rectified output, which is an independent power supply system with large output voltage fluctuations.

[0030] The DC / DC isolation module is used to regulate the onboard power input to the power supply voltage required by the unmanned surface vessel's communication equipment, such as +28V, +12V, +3.3V, etc.

[0031] The current and voltage detection circuit includes a current sensor and a voltage divider resistor. The current sensor and the voltage divider resistor divide the voltage to detect the output current and output voltage. When the output current and output voltage are abnormal, the circuit identifies the fault alarm and promptly shuts down the downstream short-circuit or overload load to protect the power supply system.

[0032] The CPU is used for power-on / power-off timing control. The CPU controls a switching circuit composed of MOSFETs by controlling the high and low levels of the GPIO signal. When the GPIO signal is high, the corresponding communication module powers on; when the GPIO signal is in a high-impedance state, the corresponding communication module powers off. At the instant the load (communication module) is powered on, a large current is usually generated; this is called the power-on inrush current. This phenomenon mainly occurs in large capacitive loads, such as capacitors, which are essentially short-circuited at the moment of power-on, and the instantaneous current is theoretically infinite. The power supply unit of the digital unmanned surface vessel communication equipment implements power-on / power-off timing control to prevent the overcurrent protection device of the main power supply circuit from malfunctioning due to excessive inrush current during startup, or to isolate the overcurrent protection of the power supply module, thus preventing power-on failure.

[0033] The CPU is also used for communication control: the onboard control computer is connected to the CPU through isolated communication ports (RS232, CAN, RS485 / RS422, Ethernet) to obtain the operating parameters of each module in the power supply unit in real time (including output current and output voltage, etc.) and record faults and alarms.

[0034] The CPU is also used for temperature control: the CPU measures the internal temperature of the onboard power supply through a temperature sensor and uploads it to the onboard control computer through an isolated communication port. By reducing the transmission power or frequency of the communication module, the power supply output power is reduced, the heat generated by the power supply is reduced, or the fan speed is increased or decreased according to the rise and fall of the internal temperature of the onboard power supply, thereby controlling the internal temperature of the onboard power supply within a suitable range.

[0035] The digital power supply unit of the aforementioned unmanned surface vessel (USV) communication equipment provides power distribution circuit opening / closing control for each communication module within the USV communication equipment, and real-time monitoring of the onboard power supply's operating status (including output voltage, output current, and internal temperature) through an output opening / closing drive circuit connected to the CPU, a current and voltage detection circuit, and an output overcurrent and short-circuit protection circuit connected to the output opening / closing drive circuit. It also uploads this data to the onboard control computer via an isolated communication port, enabling alarm and protection actions to be executed.

[0036] In one embodiment, such as Figure 3 As shown, the output opening / closing drive circuit includes a MOSFET, and the switching of the MOSFET is controlled by the GPIO signal output by the CPU.

[0037] Specifically, the MOSFET is connected to the GPIO output of the CPU to output DC voltage.

[0038] The working principle of the output opening / closing drive circuit is as follows: the weak GPIO signal (3.3V, 5V) of the microcontroller (CPU or MCU) drives the MOSFET, and the opening / closing of the power distribution circuit is realized by the closing / closing of the MOSFET.

[0039] The communication characteristics of unmanned surface vessels (USVs) involve the use of multiple communication modes, making them suitable for various applications such as underwater and surface environments. The communication modules used to implement the corresponding communication modes are only activated when needed, remaining silent at other times. Simultaneously, the USVs require long cruising times, necessitating minimal power consumption. For example... Figure 2 As shown, the communication modules used to implement communication systems 1-5 still consume a certain amount of power even when they are not in a communication state. The digital power supply device of the unmanned surface vessel communication equipment shuts off the power supply to the communication modules in the non-communication state according to the communication characteristics and methods of the unmanned surface vessel, thereby achieving low-power distribution of electrical energy and extending the cruising time of the unmanned surface vessel.

[0040] In one embodiment, such as Figure 4 As shown, the output overcurrent and short-circuit protection circuit consists of fuse F5, output soft-start control circuit, output overvoltage or freewheeling unidirectional TVS diode (Transient Voltage Suppressor) D36, and overcurrent and short-circuit hiccup protection circuit. The overcurrent and short-circuit hiccup protection circuit includes NMOS transistor Q24 (i.e., the first NMOS transistor) and NPN transistor Q1.

[0041] One end of fuse F5 is connected to 28V_IN (i.e. Figure 5 The other end is connected to one end of the TVS diode D36 and the output voltage of the digital power supply (i.e., 28V_OUT). Figure 2The output voltage of the overcurrent and short-circuit protection circuit (or the power supply voltage of the communication module) is connected, and the other end of the TVS diode D36 is grounded (i.e., GND_OUT); the overcurrent and short-circuit protection circuit also includes resistor R859 (i.e., the first resistor), capacitor C184 (i.e., the first capacitor), Zener diode D35 (i.e., the first Zener diode), resistor R858 (i.e., the second resistor), capacitor C159 (i.e., the second capacitor), resistor FR17 ​​(i.e., the third resistor), resistor R860 (i.e., the fourth resistor), capacitor C185 (i.e., the third capacitor), Zener diode D34 (i.e., the second Zener diode), and resistor FR15 (i.e., the fifth resistor).

[0042] Specifically, one end of resistor R859 is connected to the output voltage of the digital power supply device, and the other end is connected to one end of capacitor C184, the negative terminal of Zener diode D35, one end of resistor R858, the collector of NPN transistor Q1, and the gate of NMOS transistor Q24. The other end of capacitor C184 is grounded (i.e., 28V_GND), the positive terminal of Zener diode D35 is grounded, the other end of resistor R858 is grounded, the emitter of NPN transistor Q1 is grounded, the source of NMOS transistor Q24 is grounded, and the drain of NMOS transistor Q24 is grounded. One end of capacitor C159, one end of resistor FR17, and the positive terminal of Zener diode D34 are connected to the base of NPN transistor Q1, respectively. The other end of capacitor C159 is grounded, the other end of resistor FR17 ​​is grounded, the negative terminal of Zener diode D34 is connected to one end of resistor FR15, and the other end of resistor FR15 is grounded. The positive terminal of capacitor C185 is connected to the output voltage of the digital power supply device, and the negative terminal is grounded.

[0043] Fuse F5 provides short-circuit protection at the power input terminal.

[0044] The high-power TVS diode D36 is used for output voltage spike protection, which absorbs and processes voltage spikes between +28V and GND, mainly for output overvoltage or solenoid valve operation and freewheeling.

[0045] The NMOS transistor Q24 limits the startup current by charging the gate and source (GS) of the NMOS transistor through RC. The drain and source (DG) impedance of the NMOS transistor slowly decreases from infinity to 0, reducing the current surge at the moment of power-on.

[0046] NPN transistor Q1 detects the voltage drop across NMOS transistor Q24. When the current flowing through resistor R860 and across NMOS transistor Q24 is large, causing its voltage drop to exceed the turn-on voltage of NPN transistor Q1, NPN transistor Q1 turns on, the voltage between the gate and source of NMOS transistor Q24 (referred to as GS voltage) becomes low, and NMOS transistor Q24 turns off.

[0047] In one embodiment, such as Figure 5As shown, the output soft-start control circuit consists of a PMOS transistor PNP14, an NMOS transistor Q15 (i.e., the second NMOS transistor), a Zener diode D87 (i.e., the third Zener diode), a resistor FR112 (i.e., the sixth resistor), a capacitor C218 (i.e., the fourth capacitor), a capacitor C219 (i.e., the fifth capacitor), and a resistor FR113 (i.e., the seventh resistor). The source of the PMOS transistor PNP14 is connected to Vin (i.e., Figure 2 The output terminal of the DC / DC isolation module shown is connected, and the drain of the PMOS transistor PNP14 is connected to Vout (i.e., Figure 3 The output terminal of the MOS transistor shown is connected, the gate of the PMOS transistor PNP14 is connected to the drain of the NMOS transistor Q15; the source of the NMOS transistor Q15 is grounded, and the gate of the NMOS transistor Q15 is connected to the GPIO output terminal of the CPU.

[0048] The negative terminal of Zener diode D87, one end of resistor FR113, and one end of capacitor C218 are connected to the source of PMOS transistor PNP14, respectively. The positive terminal of Zener diode D87, the other end of resistor FR113, the other end of capacitor C218, and one end of resistor FR112 are connected to the gate of PMOS transistor PNP14, respectively. The other end of resistor FR112 is connected to the drain of NMOS transistor Q15. One end of capacitor C219 is connected to the drain of PMOS transistor PNP14, and the other end is grounded.

[0049] The working principle of the output soft-start control circuit is as follows: When the CPU's GPIO output terminal outputs a high voltage, the DS terminal of the NMOS transistor Q15 is turned on. The capacitor C218 and the resistor FR112 are charged through RC, slowly supplying power to the gate of the PMOS transistor PNP14. Vds slowly rises and eventually turns on the PMOS transistor PNP14. At the same time, the impedance of the PMOS transistor PNP14 drops from infinity to about 5mΩ (i.e., fully turned on), and Vout soft-starts the output.

[0050] Those skilled in the art will understand that Figure 2 The schematic diagram of the internal structure of the digital power supply device of the unmanned surface vessel communication equipment shown in the figure is only a schematic diagram of the part of the structure related to the present application and does not constitute a limitation on the present application. The digital power supply device of the specific unmanned surface vessel communication equipment may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements.

[0051] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some service interface; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0052] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0053] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0054] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0055] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0056] The above description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of embodiments of this disclosure upon considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described herein. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A digital power supply device for an unmanned surface vessel (USV) communication system, characterized in that, include: Onboard power supply, used to power the communication equipment of the unmanned surface vessel; DC EMI, connected to the onboard power supply, is used to filter out electromagnetic noise output by the onboard power supply or electromagnetic interference conducted from the power line by the unmanned surface vessel communication equipment. A DC / DC isolation module, connected to the DC EMI, is used to convert the output voltage of the onboard power supply into the power supply voltage required by the unmanned surface vessel communication equipment; A current and voltage detection circuit, connected to the DC / DC isolation module, is used to detect the output current and output voltage; The CPU is connected to the current and voltage detection circuit and the DC / DC isolation module respectively, and is used to identify a fault in a power distribution circuit based on the output current and output voltage, and control the opening or closing of the output circuit breaker drive circuit. An isolated communication port is used to transmit the output current and output voltage to the onboard control computer; A multi-output circuit breaker opening and closing drive circuit, each output circuit breaker opening and closing drive circuit is connected to the current and voltage detection circuit and the CPU respectively, and is used to realize the opening / closing drive of each power distribution circuit according to the GPIO signal output by the CPU. A multi-output overcurrent and short-circuit protection circuit is provided. Each output overcurrent and short-circuit protection circuit is connected to one of the aforementioned output opening and closing drive circuits and one of the communication modules, respectively, to protect the multi-channel communication modules.

2. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, It also includes a temperature sensor, which is connected to the CPU and used to detect the temperature inside the onboard power supply.

3. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, The output opening and closing drive circuit includes a MOSFET, and the switching of the MOSFET is controlled according to the GPIO signal output by the CPU.

4. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 3, characterized in that, The output overcurrent and short circuit protection circuit includes a fuse, a TVS diode, and an overcurrent and short circuit hiccup protection circuit. The fuse is used to provide short circuit protection at the power input terminal. The TVS diode serves as the output spike voltage protection part, used to absorb and process the voltage spike energy between the output voltage and zero of the digital power supply device. The overcurrent and short-circuit hiccup protection circuit includes a first NMOS transistor and an NPN transistor. The first NMOS transistor is used to limit the current and reduce the current surge at power-on. The NPN transistor is used to detect the voltage drop across the first NMOS transistor. When the current flowing through the first NMOS transistor causes its voltage drop to exceed the turn-on voltage of the NPN transistor, the NPN transistor turns on, the voltage between the gate and source of the first NMOS transistor is low, and the first NMOS transistor turns off.

5. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 4, characterized in that, One end of the fuse is connected to the output terminal of the MOSFET, and the other end is connected to one end of the TVS diode and the output voltage of the digital power supply device. The other end of the TVS diode is grounded. The overcurrent and short-circuit protection circuit also includes a first resistor, a first capacitor, a first Zener diode, a second resistor, a second capacitor, a third resistor, a fourth resistor, a third capacitor, a second Zener diode, and a fifth resistor. One end of the first resistor is connected to the output voltage of the digital power supply device, and the other end is connected to one end of the first capacitor, the cathode of the first Zener diode, one end of the second resistor, the collector of the NPN transistor, and the gate of the first NMOS transistor. The other end of the first capacitor is grounded, the anode of the first Zener diode is grounded, the other end of the second resistor is grounded, the emitter of the NPN transistor is grounded, the source of the first NMOS transistor is grounded, and the drain of the first NMOS transistor is grounded. One end of the second capacitor, one end of the third resistor, and the anode of the second Zener diode are respectively connected to the base of the NPN transistor. The other end of the second capacitor is grounded, the other end of the third resistor is grounded, the cathode of the second Zener diode is connected to one end of the fifth resistor, and the other end of the fifth resistor is grounded. The anode of the third capacitor is connected to the output voltage of the digital power supply device, and the cathode is grounded.

6. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, The output overcurrent and short circuit protection circuit also includes an output soft-start control circuit, which includes a PMOS transistor and a second NMOS transistor. The source of the PMOS transistor is connected to the output terminal of the DC / DC isolation module, the drain of the PMOS transistor is connected to the output terminal of the MOS transistor, and the gate of the PMOS transistor is connected to the drain of the second NMOS transistor. The source of the second NMOS transistor is grounded, and the gate of the second NMOS transistor is connected to the GPIO output terminal of the CPU.

7. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 6, characterized in that, The output soft-start control circuit also includes a third Zener diode, a sixth resistor, a fourth capacitor, a fifth capacitor, and a seventh resistor, wherein... The negative terminal of the third Zener diode, one end of the seventh resistor, and one end of the fourth capacitor are connected to the source of the PMOS transistor. The positive terminal of the third Zener diode, the other end of the seventh resistor, the other end of the fourth capacitor, and one end of the sixth resistor are connected to the gate of the PMOS transistor. The other end of the sixth resistor is connected to the drain of the second NMOS transistor. One end of the fifth capacitor is connected to the drain of the PMOS transistor, and the other end is grounded.

8. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, The CPU is also used to control the power-on / power-off timing of the communication module.

9. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, The communication equipment of the unmanned surface vessel requires a power supply voltage of +28V, +12V, or +3.3V.

10. The digital power supply device for the unmanned surface vessel communication equipment as described in claim 1, characterized in that, The current and voltage detection circuit includes a current sensor and a voltage divider resistor.

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