Alternating current and direct current dual-power redundant power supply device for marine optical fiber compass

Abstract

The utility model discloses an alternating-current and direct-current dual-power redundant power supply device for a marine optical fiber compass, and relates to the technical field of marine optical fiber compass power supplies. The dual power supply module is connected with the power supply management board, the dual power supply module comprises an AC / DC power supply module and a DC / DC power supply module, the AC / DC power supply module and the DC / DC power supply module have input overvoltage, undervoltage and output overcurrent protection functions, and the power supply management board comprises AC and DC power supply input overcurrent protection, a power supply switch, a dual power supply uninterrupted switching circuit, a power supply in-place alarm circuit and a power supply output overcurrent protection circuit. According to the utility model, input overload, overvoltage, over-temperature and under-voltage locking (DC) and input and output overcurrent protection are realized, so that the stability of the power supply is improved; a power supply double-input uninterrupted redundant power supply function is realized; the DC power supply belongs to an isolated power supply, so that the working reliability of the optical fiber compass system is improved; the power supply in-place alarm detection provides a power supply alarm function for the compass system.

Description

Technical Field

[0001] This utility model belongs to the field of marine fiber optic compass power supply technology, specifically relating to a redundant AC and DC dual power supply device for marine fiber optic compasses. Background Technology

[0002] A fiber optic compass is a strapdown test gyrocompass based on a fiber optic gyroscope. In ship navigation and communication systems, it provides information such as heading angle, heading angular velocity, attitude angle, and heave. Gyrocompasses have evolved from electrically controlled gyrocompasses (Electronic Compass) to three-axis platform compasses, and then to strapdown test compasses. Gyroscopes have evolved from high-speed rotating mechanical gyroscopes to optical gyroscopes without rotating parts. Fiber optic gyroscopes have seen rapid development in the last decade or so due to their relatively lower technological barrier compared to laser gyroscopes. Fiber optic compasses are trending towards replacing traditional Electronic Compass. However, existing power supply devices for marine fiber optic compasses exhibit poor stability and are prone to power outages. Utility Model Content

[0003] To address the problems mentioned in the background section, the purpose of this invention is to provide a redundant AC and DC dual-power supply device for marine fiber optic compasses.

[0004] This utility model discloses a redundant AC and DC dual-power supply device for a marine fiber optic compass, comprising a power supply box, a dual-power supply module, and a power management board. The power supply box contains the power supply box, the dual-power supply module, and the power management board. The dual-power supply module is connected to the power management board. The dual-power supply module includes an AC / DC power supply module and a DC / DC power supply module with input overvoltage, undervoltage, and output overcurrent protection. The power management board includes: AC and DC power input overcurrent protection, a power switch, a dual-power uninterrupted switching circuit, a power supply presence alarm circuit, and a power output overcurrent protection circuit.

[0005] As a preferred embodiment: the power supply box door and the box body are sealed with a waterproof groove and a sealing strip. The upper and lower ends of the power supply box are respectively welded with upper and lower hanging ears. The power supply box has downward-opening louvered air outlets on both sides. The lower side of the box body has a cable outlet and a cable tie. The cable outlet size is reduced by the cable outlet baffle to achieve the IP22 protection requirement.

[0006] As a preferred embodiment, the power management board is soldered with a power input interface, a power module input interface, a main and backup DC power input port, a DU and alarm point interface, and a power output interface.

[0007] As a preferred option, the AC / DC power module is model NDR-240-24, NDR-120-24, or NDR-75-24.

[0008] As a preferred option, the DC / DC power module is model DDR-240B-24, DDR-120B-24, or DDR-60G-24.

[0009] As a preferred embodiment, the MOSFET of the power management board's dual power supply uninterrupted switching circuit is of model IRF3205PBF, and the diode is of model MBRF2045CT.

[0010] As a preferred embodiment, the power in-place alarm circuit of the power management board is based on a relay-based dry contact output circuit, and the relay adopts the HFD27 / 024-S type.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. It features input overload, overvoltage, overtemperature, and undervoltage lockout (DC), as well as input and output overcurrent protection, improving the stability of the power supply;

[0013] 2. It has dual-input uninterruptible redundant power supply function with 90~264V, 47~63Hz AC power supply and 16.8~33.6VDC power supply;

[0014] Third, DC power supplies are isolated power supplies, which increases the reliability of the fiber optic compass system.

[0015] IV. Power Supply Alarm Detection provides a power supply alarm function for the compass system. Attached Figure Description

[0016] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the power supply box of this utility model;

[0019] Figure 3 This is a schematic diagram of the uninterrupted switching circuit of the power control board in this utility model;

[0020] Figure 4 This is a schematic diagram of the power supply in-position alarm circuit of the power control board in this utility model.

[0021] In the diagram: 1-Power supply box; 2-AC / DC power module; 3-DC / DC power module; 4-Power management board;

[0022] 1-1-Top hanging ear; 1-2-Bottom hanging ear; 1-3-Louvre air outlet; 1-4-Cable tie;

[0023] TB5-DU and alarm point interface; TB7-power module input interface; TB8-power input interface; TB9-main and backup DC power input port; TB10-power output interface. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. The structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0026] Combination Figure 1 The following is an illustration of this specific embodiment, which adopts the following technical solution: it includes a power supply box 1, a dual power supply module, and a power management board 4; the power supply box 1 is equipped with the power supply box 1, the dual power supply module, and the power management board 4 respectively. The dual power supply module is connected to the power management board 4. The dual power supply module includes an AC / DC power supply module 2 and a DC / DC power supply module 3 with input overvoltage, undervoltage, and output overcurrent protection. The power management board includes: AC and DC power input overcurrent protection, a power switch, a dual power uninterrupted switching circuit, a power supply in-situ alarm circuit, and a power output overcurrent protection circuit.

[0027] Combination Figure 2 The illustration shows that in this specific embodiment, the door of the power supply box 1 is sealed to the box body using a waterproof groove and a sealing strip. The upper and lower ends of the power supply box 1 are respectively welded with upper hanging ears 1-1 and lower hanging ears 1-2. The power supply box 1 has downward-opening louvered air outlets 1-3 on both sides. The lower side of the box body has a cable outlet and a cable tie 1-4. The cable outlet size is reduced by a cable outlet baffle to achieve the IP22 protection requirement. The power management board is soldered with a power input interface TB8, a power module input interface TB7, a main / standby DC power input port TB9, a DU and alarm point interface TB5, and a power output interface TB10.

[0028] As described above, the AC / DC power module 2 is model NDR-240-24, NDR-120-24, or NDR-75-24; the DC / DC power module 3 is model DDR-240B-24, DDR-120B-24, or DDR-60G-24.

[0029] Combination Figure 3 The diagram illustrates this specific embodiment. The power control board uses an MBRF2045CT diode to connect two DC power supplies in parallel, and an IRF3205PBF MOSFET chip to control the switching on and off of one of the (backup) power supplies. When both power supplies are stable, the MOSFET is turned off and the main power supply is used; when the main power supply voltage drops to a certain value, the MOSFET is turned on and the backup power supply is connected (the backup power supply voltage is higher than the main power supply voltage).

[0030] Combination Figure 4 The diagram illustrates this specific embodiment. The power control board's power-on alarm circuit diagram shows V1 and V2 corresponding to the voltages (U1+ and U2+) before the main and backup power diodes, respectively, and connected to Vr1 and Vr2 via DIP switches. When the power is present, the corresponding relay is driven to operate, and the normally open contact of the relay serves as the power-on alarm contact.

[0031] This specific implementation is an important component of a marine fiber optic compass system. It provides a stable and reliable dual-redundant power supply for the fiber optic compass system; typically, ships are equipped with an AC power distribution board powered by the main generator, and a DC power distribution board powered by batteries and a backup generator; therefore, AC / DC dual-redundant power supply is more reliable. It provides power detection points for the fiber optic compass system, dry contact alarm points for external systems, and can also power external devices such as compasses, compass repeaters, and heading recorders.

[0032] 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.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A kind of marine optical fiber compass AC and DC dual power supply redundant power supply device, it is characterized by: The utility model provides a double power supply management board, it includes power box (1), double power supply module, power management board (4), power box (1) is installed double power supply module, power management board (4) respectively in power box (1), double power supply module is connected with power management board (4), the double power supply module includes the AC / DC power module (2) and DC / DC power module (3) with input overvoltage, under voltage, output overcurrent protection, the power management board includes: AC and DC power input overcurrent protection, power switch, double power supply uninterrupted switching circuit, power in position warning circuit, power output overcurrent protection circuit, the box door of power box (1) and the tank body adopt the sealing of waterproof groove and sealing strip mode, the upper end of power box (1) and the lower end are welded with upper hanging ear (1-1), lower hanging ear (1-2) respectively, and the both sides of power box (1) have the louvered window air outlet (1-3) that opens downward, and the cable outlet and the wire binding frame (1-4) are arranged on the lower side of tank body.

2. The AC and DC dual power supply redundant power supply device for marine optical fiber compass of claim 1, characterized in that: The AC / DC power module (2) is NDR-240-24 or NDR-120-24 or NDR-75-24.

3. The AC and DC dual power supply redundant power supply device for marine fiber compass of claim 1, characterized in that: The DC / DC power module (3) is DDR-240B-24 or DDR-120B-24 or DDR-60G-24.

4. The AC and DC dual power supply redundant power supply device for marine fiber compass of claim 1, characterized in that: The power management board (4) is tin soldered with power input interface (TB8), power module input interface (TB7), main and standby DC power input port (TB9), DU and alarm point interface (TB5) and power output interface (TB10).

5. The AC and DC dual power supply redundant power supply device for marine fiber compass of claim 1, characterized in that: The MOS tube of the double power supply uninterrupted switching circuit of the power management board (4) is IRF3205PBF type, and the diode is MBRF2045CT type.

6. The AC and DC dual power supply redundant power supply device for marine fiber compass of claim 1, characterized in that: The power in position warning circuit of the power management board (4) is a dry contact output circuit based on a relay, and the relay is HFD27 / 024-S type.

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