Marine optical fiber compass system data unit with four-compass input

Abstract

The utility model discloses a marine optical fiber compass system data unit with four-compass input. The marine optical fiber compass system data unit comprises a CUP board, a communication interface board, an inter-board plug-in and fixing piece, a guide rail type supporting frame, a protection panel and a label. The CUP board comprises a main processor, a coprocessor, a CPU board power supply, a dual CAN bus interface, a Gyro4 half-duplex interface, a control unit power supply and communication interface and an external clock system; the communication interface board comprises a Gyro1-3 interface, a BAM interface, a satellite guide receiving and relay / output interface, a dry contact signal interface, four groups of output interfaces, two paths of RS485 multifunctional interfaces, a communication power supply module, a system power supply, a redundant power supply detection module and a filtering and protection circuit. The inter-board plug-in and fixing piece comprises a pin header, a female header, a hexagonal copper column for fixing, a flat gasket, an elastic gasket, a nut and a screw. According to the utility model, four paths of compass signals can be accessed, so that information such as multi-compass redundant course angles, course angular speeds and the like can be provided for ships.

Description

Technical Field

[0001] This utility model relates to the field of marine fiber optic compass data processing technology, specifically a data unit for a marine fiber optic compass system with four compass inputs. 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 electronically controlled gyrocompasses (ECAs) 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 EAs.

[0003] The data unit of a fiber optic compass system serves as a bridge connecting the main fiber optic compass instrument with other communication and navigation system equipment. With the increasing intelligence of ships and the growing demands for reliability and safety, ship communication and navigation systems often include two gyrocompasses and one magnetic compass; some ships may also have a satellite compass. The downstream users of the compass system are numerous, geographically diverse, and must not interfere with each other. Utility Model Content

[0004] The purpose of this invention is to provide a data unit for a marine fiber optic compass system with four compass inputs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A data unit for a marine fiber optic compass system with four compass inputs includes a CPU board, a communication interface board, board-to-board connectors and fasteners, a rail-type support frame, a protective panel, and a label.

[0007] The CPU board includes: a main processor, a coprocessor, a CPU board power supply, dual CAN bus interfaces, a Gyro4 half-duplex interface, a control unit power supply and communication interface, and an external clock system.

[0008] The communication interface board includes: Gyro1-3, BAM, satellite receiver and relay / output interface, dry contact signal interface, 4 sets of output interfaces, 2 RS485 multi-function interfaces, communication power module, system power supply, redundant power detection module, filtering and protection circuit.

[0009] The in-line connectors and fasteners include: pin headers, female headers, hexagonal copper posts for fixing, flat washers, spring washers, nuts, and screws;

[0010] The guide rail support frame, protective panel and label include: a 122mm standard PCB base plate, C45 guide rail left and right support plates, fixing screws between the support plates and the base plate, an acrylic transparent upper protective plate, a product definition table, and a model information label.

[0011] As a further aspect of this utility model: the main processor is an STM32H743VIT6 and the coprocessor is an STM32H750VBT6.

[0012] As a further embodiment of this utility model, the serial communication interface circuit uses an ISO3080 chip and an SP00S12 surge protector to achieve transient suppression, discharge absorption, and overcurrent protection.

[0013] As a further embodiment of this utility model: the satellite receiver and relay / output interface adopts an analog switch to control the selection of satellite receiver or internal manual mode.

[0014] As a further aspect of this invention, the redundant power supply detection module employs a voltage comparator.

[0015] As a further embodiment of this utility model: the power supply and communication interface of the control unit includes a DC24V power supply and protection circuits based on ADUM1201, Max488.

[0016] As a further embodiment of this utility model, the filtering and protection circuit includes reverse connection, overvoltage, overcurrent, and power supply filters.

[0017] As a further improvement of this invention, the external clock system uses a DS3231 high-precision clock chip and is powered by a removable rechargeable battery.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] It can receive 4 compass signals, enabling it to provide ships with multi-compass redundancy information such as heading angle and heading angular velocity;

[0020] A reliable serial communication port improves communication quality.

[0021] Compliant with IEC-61162-3 standard, meeting yacht requirements;

[0022] Supports BAM alarms, improving the reliability and usability of the compass system. Attached Figure Description

[0023] Figure 1 Circuit diagram of the data unit of a marine fiber optic compass system with four compass inputs.

[0024] Figure 2This is a circuit diagram of the serial communication interface in the data unit of a marine fiber optic compass system with four compass inputs.

[0025] Figure 3 This is a circuit diagram of the satellite navigation receiver and relay / output interface in the data unit of a marine fiber optic compass system with four compass inputs.

[0026] Figure 4 Circuit diagram of redundant power supply detection module in data unit of marine fiber optic compass system with four compass inputs.

[0027] Figure 5 The circuit diagram shows the power supply and communication interface of the control unit in the data unit of a marine fiber optic compass system with four-compass input.

[0028] Figure 6 The circuit diagram shows the power supply filtering and protection circuit in the data unit of a marine fiber optic compass system with four compass inputs.

[0029] Figure 7 The circuit diagram of the external clock system in the data unit of a marine fiber optic compass system with four compass inputs. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] A data unit for a marine fiber optic compass system with four compass inputs includes a CPU board, a communication interface board, board-to-board connectors and fasteners, a rail-type support frame, a protective panel, and a label.

[0033] The CPU board includes: a main processor, a coprocessor, a CPU board power supply, dual CAN bus interfaces, a Gyro4 half-duplex interface, a power supply and communication interface for the control unit, and an external clock system.

[0034] The communication interface board includes: Gyro1-3, BAM, satellite receiver and relay / output interface, dry contact signal interface, 4 sets of output interfaces, 2 RS485 multi-function interfaces, communication power module, system power supply, redundant power detection module, filtering and protection circuit.

[0035] The in-line connectors and fasteners include: pin headers, female headers, hexagonal copper posts for fixing, flat washers, spring washers, nuts, and screws.

[0036] The guide rail support frame, protective panel and label include: a 122mm standard PCB base plate, C45 guide rail left and right support plates, fixing screws between the support plates and the base plate, an acrylic transparent upper protective plate, a product definition table, and a model information label.

[0037] Preferably, the main processor is an STM32H743VIT6 and the coprocessor is an STM32H750VBT6.

[0038] Preferably, the serial communication interface circuit uses an ISO3080 chip and an SP00S12 surge protector to achieve transient suppression, discharge absorption, and overcurrent protection.

[0039] like Figure 1 The diagram shows the serial communication interface circuit. The ISO3080 is used to implement isolated TTL and RS422 differential level conversion, and the SP00S12 surge protector is used to protect the differential signal terminal circuit.

[0040] Preferably, the satellite receiver and relay / output interface uses an analog switch to control the selection of satellite receiver or internal manual mode.

[0041] like Figure 2 As shown, the satellite receiver and relay / output interface circuit diagram, the serial communication circuit section and... Figure 2 The U11 output differential signal source is controlled by the RSM057XH chip, thereby relaying external satellite navigation signals or sending analog position signals.

[0042] Preferably, the redundant power supply detection module employs a voltage comparator.

[0043] like Figure 3 As shown in the diagram, the redundant power supply detection module circuit diagram is shown. U1+ is the voltage being detected, and +18V_1 is the reference voltage. The digital signal is generated by the comparison circuit composed of LM293 and amplified by 8050 before being sent to the opto-isolated I / O of the MCU.

[0044] Preferably, the power supply and communication interface of the control unit includes a DC24V power supply and protection circuits based on ADUM1201, Max488, and other technologies.

[0045] like Figure 4 As shown, the control unit power supply and communication interface circuit diagram shows that both the data unit and the control unit are internal components of the compass system and are therefore controllable. The interface circuit between the data unit and the control unit is implemented using an ADUM1201 bidirectional digital isolation chip and a MAX488 level conversion chip. A bipolar TVS diode is used to construct the circuit. Figure 2The protection circuit shown uses an RC filter to isolate the signal ground from the chassis ground. A VRB2405 power supply powers the isolation terminals, while the DC 24V power supply at the end of the data unit power filter protection circuit powers the control unit.

[0046] Preferably, the filtering and protection circuit includes reverse connection, overvoltage, overcurrent, and power supply filters.

[0047] like Figure 5 The circuit diagram shown is for power filtering and protection. Reverse polarity protection is achieved through diode D21, overcurrent protection is achieved through F1, overvoltage protection is achieved through MY1, and EMI power filtering is achieved through FI-B03D and capacitor C68.

[0048] Preferably, the external clock system uses a DS3231 high-precision clock chip and is powered by a removable rechargeable battery.

[0049] like Figure 6 As shown in the diagram, the external clock system circuit diagram obtains accurate RTC time through DS3231. Battery GB1 ensures the normal operation of the time system when the data unit is powered off, and uses MCP73831T to charge the battery when the data unit is powered on.

[0050] This invention is an important component of a fiber optic compass system. Firstly, the main fiber optic compass instrument, gyrocompass instrument, magnetic compass instrument, or satellite compass instrument sends ship navigation information such as heading angle, heading angular velocity, and attitude angle to this invention via a serial communication interface. Simultaneously, this invention receives information from satellite navigation and log devices and can forward position and speed information to the aforementioned main compasses. This invention forwards ship navigation information to the user via serial and CANBUS. It interacts with the BAM (Baidu, Alibaba, and Mobile Assistant) interface to exchange alarm information. This invention also receives control from the control unit, and the control unit displays relevant information from the data unit.

[0051] This utility model adopts a dual ARM chip architecture, a communication interface with multiple power supply isolation protection, and measures such as anti-static, surge, impact, and induced lightning protection circuits. It has the following interface functions:

[0052] Four-channel compass serial signal interface, of which the first three channels allow for parameter configuration of FLAGSHIP;

[0053] Two satellite navigation and log serial signal interfaces (one dedicated to multiplexing with Gyro4);

[0054] (3) One BAM alarm serial signal interface;

[0055] (4) Two CAN bus interfaces (can be used redundantly);

[0056] (5) One serial signal interface for display and control unit;

[0057] (6) 4 groups of 16-channel configurable statement output serial signal interfaces;

[0058] (7) Two RS485 serial signal interfaces, which can be used for output, speedometer signal input and simultaneous use with expansion boards. This utility model combines the characteristics of marine communication and navigation equipment, and is compatible with the communication and navigation interfaces of IEC61162-1 / 2 standard and some manufacturers' standards. It is simple to use and operate, and the communication is stable and reliable. It adopts rail mounting and is suitable for use in new ships or the retrofitting of operating ships.

[0059] 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.

[0060] 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 marine fiber optic gyro system data unit for four- gyro input, characterized by, CUP board (1), communication interface board (2), inter-board connector and fixing (3), guide rail type support frame (4), protective panel and label are included. The CUP board (1) includes: main processor, coprocessor, CPU board power supply, dual CAN bus interface, Gyro4 half-duplex interface, control unit power supply and communication interface, external clock system. The communication interface board (2) includes: Gyro1-3, BAM, GPS receiving and relay / output interface, dry contact signal interface, 4 groups of output interface, 2-way RS485 multifunctional interface, communication power module, system power supply, redundant power detection module, filter and protection circuit. The inter-board connector and fixing (3) includes: row pin, row female, fixing hexagonal copper column, flat pad, elastic pad, nut, screw. The guide rail type support frame (4), protective panel and label include: 122mm standard PCB bottom plate, C45 guide rail left and right support plates, fixing screws between support plates and bottom plate, acrylic transparent upper protective plate, product definition table, model information label paper.

2. A four-compass input fiber-optic marine compass system data unit according to claim 1, characterized in that, The model of the main processor is STM32H743VIT6, and the model of the coprocessor is STM32H750VBT6.

3. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The serial communication interface circuit adopts IS03080 chip and SP00S12 surge protector to realize transient suppression, discharge absorption and overcurrent protection.

4. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The GPS receiving and relay / output interface adopts analog switch control to select GPS or internal manual subscription.

5. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The redundant power detection module adopts voltage comparator.

6. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The control unit power supply and communication interface includes DC24V power supply and ADUM1201, Max488 and protection circuit based.

7. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The filter and protection circuit includes reverse connection, overvoltage, overcurrent and power filter.

8. The four-compass input marine fiber-optic compass system data unit of claim 1, wherein, The external clock system adopts DS3231 high-precision time chip and has a detachable rechargeable battery power supply.

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