Marine optical fiber compass motion simulation test system

Abstract

The utility model discloses a motion simulation test system for a marine optical fiber compass, and relates to the technical field of marine optical fiber compass test. The data acquisition card is connected with the computer, the data acquisition card is respectively connected with the multi-mode satellite navigation system and the vehicle-mounted odometer, the multi-mode satellite navigation system and the vehicle-mounted odometer are arranged on the vehicle-mounted system, and the power supply system supplies power to the system; according to the utility model, the ship motion effect can be simulated on the land, and the ship compass conduction test environment and condition can be provided; the FLAGSHIP optical fiber compass has the functions of real-time display of test equipment data and display of information such as the working state and the mode of the FLAGSHIP optical fiber compass, and can control the FLAGSHIP optical fiber compass. The system has the functions of data storage and log recording, and prepares original data for post data analysis and simulation.

Description

Technical Field

[0001] This utility model belongs to the field of marine fiber optic compass testing technology, specifically relating to a marine fiber optic compass motion simulation testing system. 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 threshold compared to laser gyroscopes. Fiber optic compasses are trending towards replacing traditional Electronic Compass. After research and production, marine fiber optic compasses require simulated ship motion testing before they can be used on board. However, existing simulation testing systems have limited testing steps and require multiple testing systems, resulting in low stability and reliability during testing. Utility Model Content

[0003] To address the problems mentioned in the background section, the purpose of this invention is to provide a marine fiber optic compass motion simulation testing system.

[0004] This utility model discloses a marine fiber optic compass motion simulation test system, comprising a multi-mode satellite navigation system, a vehicle-mounted odometer, a data acquisition card, a computer, a power supply system, and a vehicle-mounted system. The data acquisition card is connected to the computer and is also connected to the multi-mode satellite navigation system and the vehicle-mounted odometer. The multi-mode satellite navigation system and the vehicle-mounted odometer are installed on the vehicle-mounted system, and the power supply system provides power to the system.

[0005] As a preferred embodiment, the multi-mode satellite navigation system includes a positioning board and a motherboard.

[0006] As a preferred option, the positioning board is a K823 type positioning board.

[0007] As a preferred option, the motherboard has 4 RS422 serial port outputs and is powered by 24V.

[0008] As a preferred option, the data acquisition card is a USB serial card or a serial server.

[0009] As a preferred embodiment, the power system includes a battery, an inverter, an AC / DC power supply, and an on-board charger.

[0010] As a preferred embodiment, the vehicle-mounted odometer uses the CAN bus to acquire the speed data of the test vehicle and converts it into NMEA statements for output.

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

[0012] I. It can simulate the motion of ships on land and provide the testing environment and conditions for ship compass navigation;

[0013] 2. It has the function of real-time display of test equipment data, display of FLAGSHIP fiber optic compass working status, mode and other information, and can control FLAGSHIP fiber optic compass.

[0014] Third, it has data storage and log recording functions to prepare raw data for post-event data analysis and simulation. Attached Figure Description

[0015] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the circuit diagram of the vehicle-mounted odometer in this utility model;

[0018] Figure 3 This is a schematic diagram of the error measurement of this utility model. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] Combination Figure 1The following is a description of this specific embodiment, which adopts the following technical solution: It includes a multi-mode satellite navigation system, an on-board odometer, a data acquisition card, a computer, a power supply system, and an on-board system. The data acquisition card is connected to the computer, and also connected to the multi-mode satellite navigation system and the on-board odometer. The multi-mode satellite navigation system and the on-board odometer are installed on the on-board system. The power supply system provides power to the system. The multi-mode satellite navigation system includes a positioning board and a motherboard. The positioning board is a K823 type positioning board. The motherboard has 4 RS422 serial port outputs and is powered by 24V. The data acquisition card is a USB serial port card or a serial port server. The power supply system includes a battery, an inverter, an AC / DC power supply, and an on-board charger. The on-board odometer uses a CAN bus to acquire the speed data of the test vehicle and converts it into NMEA statement output.

[0022] The measurement system in this specific embodiment is used to measure absolute accuracy. The test is conducted at the beginning and end of the test, using an optical theodolite, a reference prism, and suitable benchmarks and standard sites.

[0023] Combination Figure 2 The following is an explanation of this specific embodiment, which adopts the following technical solution: The vehicle odometer uses a CTM1051M as a CAN bus transceiver and an SP0012 as a protector; it uses ADUM1201 and MAX488 chips to implement serial output, and a TVS diode to form a protection circuit; it uses an STM32F407 microcontroller as the main control chip to realize data parsing and data conversion functions.

[0024] Combination Figure 3 The following is an explanation of this specific implementation method, which adopts the following technical solution: According to the error measurement diagram, point A is a distant benchmark (generally a fixed building), point O is the assumed location of the theodolite, and point B is the parking point; generally, the distance OA is 1-3km, and the distance OB is 1-3m; point O is also fixed for each test, and the theodolite setup error is about 10cm, which causes negligible error in the OA direction; the azimuth angle of OA can be calculated using the latitude and longitude coordinates of points O and A, and the azimuth angle of OB can be calculated by measuring the theodolite, which can then calculate the location found by the vehicle-mounted prism, and finally calculate the true azimuth of the fiber optic compass to calculate the error.

[0025] This specific implementation method is an important component of the production and testing of marine fiber optic compasses. It provides a stable and reliable testing process for fiber optic compasses technology upgrades, process upgrades, and routine production; it implements a mode testing and verification scheme before technology implementation or process upgrades, provides a mode testing platform for the accuracy inspection of routine production products, and improves the stability and reliability of fiber optic compasses products.

[0026] 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.

[0027] 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 motion simulation test system, characterized by: The system comprises a multi-mode satellite navigation system, a vehicle mileage meter, a data acquisition card, a computer, a power supply system and a vehicle system; the data acquisition card is connected with the computer, and connected with the multi-mode satellite navigation system and the vehicle mileage meter respectively; the multi-mode satellite navigation system and the vehicle mileage meter are installed on the vehicle system; and the power supply system provides power supply for the system.

2. A shipboard optical fiber gyro motion simulation test system according to claim 1, wherein: The multi-mode satellite navigation system comprises a positioning board card and a mother board.

3. A marine fiber optic gyro motion simulation test system according to claim 2, wherein: The positioning board card is a K823 type positioning board card.

4. The optical fiber gyro motion simulation test system for marine use according to claim 2, characterized in that: The mother board is a 4-way RS422 serial port output and 24V power supply.

5. The optical fiber gyro motion simulation test system for marine use according to claim 1, characterized in that: The data acquisition card is a USB serial port card or a serial port server.

6. The optical fiber gyro motion simulation test system for marine use according to claim 1, characterized in that: The power supply system comprises a storage battery, an inverter, an AC / DC power supply and a vehicle charger.

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