Low-cost heading repeating equipment
Through the heading re-indication equipment driven by dual stepper motor and closed-loop control, the problems of large errors and cumulative errors of existing equipment are solved, and high-precision and low-cost heading re-indication are achieved.
Patent Information
- Application Number
- CN202422559773.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The existing ship heading equipment is driven by a single motor and a single dial. The heading re-indication is not accurate and intuitive enough, and the error is large. The use of open-loop control leads to the accumulation of errors after continuous operation, which requires regular manual correction.
A dual-step motor is used to drive the coarse and fine dials, combined with software algorithms for closed-loop control, and the position information is feedbacked by the magnetic encoder to achieve real-time tracking of heading and error control within the range of 0.1°.
It improves the accuracy of heading re-display and smoothness of dynamic rotation, avoids error accumulation and step loss, and reduces design and production costs.
Smart Images
Figure CN223132322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship course repeater equipment, in particular to a low-cost course repeater equipment. Background Technique
[0002] With the development of navigation technology and the progress of the times, compasses are the "compass needles" for ships sailing on the sea. It is divided into two parts: gyrocompass and repeater compass. The repeater compass is a repeater used to display the course information of the master compass at multiple positions on the ship, providing real-time course information and is the main instrument for marine navigation.
[0003] For the existing ship course equipment, during its use, it often has a single motor and drives the scale disk separately. The course indication value is not accurate and intuitive enough, and the error value is large. Moreover, it uses open-loop control, and there will be a step-loss phenomenon after continuous operation. After long-term use, error accumulation will occur, and it needs to be manually corrected regularly, which is very inconvenient. Content of the Utility Model
[0004] The purpose of the utility model is to solve the shortcomings of the existing ship course equipment that during its use, it often has a single motor and drives the scale disk separately. The course indication value is not accurate and intuitive enough, and the error value is large. Moreover, it uses open-loop control, and there will be a step-loss phenomenon after continuous operation. After long-term use, error accumulation will occur, and it needs to be manually corrected regularly, which is very inconvenient, and to propose a low-cost course repeater equipment.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A low-cost course repeater equipment includes: a housing, a end cover is installed at the top of the housing, and a scale disk is arranged above the inner side of the housing. The scale disk includes a fine scale disk, and a coarse scale disk is arranged outside the fine scale disk. One side inside the housing is provided with a first motor, and the other side inside the housing is installed with a second motor. The bottoms of the first motor and the second motor are connected with a magnetic head assembly. An installation plate is arranged inside the housing, and a wiring board is arranged below the installation plate. The bottom end of the housing is connected with a bottom cover, and a washer is inlaid at the bottom end of the bottom cover. A sealing ring is arranged at the bottom end of the bottom cover. A cable assembly is inserted into the bottom end of the bottom cover, and the cable assembly is sleeved with the washer and the cable assembly sealing ring respectively. A filter is connected to the rear side of the bottom end of the installation plate, and a power module is installed in front of the bottom end of the installation plate. A signal processing board is installed inside the housing, and a gear is installed above the inner side of the housing. The gear is connected with the output shaft of the second motor.
[0007] Preferably, a lighting board is arranged below the scale disk, and an index is connected to the top of the scale disk.
[0008] Preferably, an azimuth ring is sleeved outside the dial.
[0009] Preferably, the power supply module and the filter are electrically connected.
[0010] Preferably, two groups of lighting plates are provided, and the lighting plates and the housing form a detachable structure through bolts.
[0011] Preferably, the center of the fine dial coincides with the center of the coarse dial, and the bottom end of the coarse dial is connected to the output end of the first motor.
[0012] To sum up, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows: In the present utility model, 2 stepping motors are selected for dual-channel drive, which respectively drive the coarse and fine dials to rotate to the target value, making the course indication more intuitive and accurate. At the same time, in combination with software algorithms, it is ensured to ensure the accuracy of the indicated course and the smoothness of the dynamic rotation of the dial, control the indication accuracy error within the range of 0.1°, realize the function of the indicated course to track the input course in real time, and the microprocessor receives the position information of the coarse and fine dials through 2 magnetic encoder interfaces to obtain the indicated course and perform position feedback. Then, the feedback data is compared with the course data received through the serial port. When the difference between the two courses is greater than the specified value, the driving motor rotates to within the error range to complete the closed-loop control of the course indication, so as to ensure the indication accuracy during continuous operation, avoid the phenomenon of missing steps and the accumulation of real-time errors, and all raw materials, parts and components adopt standard parts and market off-the-shelf products, reducing the complexity and cost in the design and production processes. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall internal structure of the present utility model.
[0014] Figure 2 It is a schematic top view structure of the present utility model.
[0015] Figure 3 It is a schematic diagram of the process structure of the course indication device of the present utility model.
[0016] Legend:
[0017] 1. Dial; 2. Index; 3. Housing; 4. First motor; 5. Second motor; 6. Magnetic head assembly; 7. Mounting plate; 8. Wiring board; 9. Washer; 10. Sealing ring; 11. Cable assembly; 12. Filter; 13. Power supply module; 14. Bottom cover; 15. Signal processing board; 16. Gear; 17. Lighting plate; 18. End cover; 19. Fine dial; 20. Coarse dial; 21. Azimuth ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.
[0019] Referring to Figures 1 - 3 , a low-cost heading repeater device includes a housing 3. A end cover 18 is installed at the top of the housing 3, and a dial 1 is arranged above the inner side of the housing 3. The dial 1 includes a fine dial 19, and a coarse dial 20 is arranged outside the fine dial 19. The center of the fine dial 19 coincides with the center of the coarse dial 20, and the bottom end of the coarse dial 20 is connected to the output end of the first motor 4. The fine dial 19 is driven by the second motor 5, and the coarse dial 20 is driven by the first motor 4 to perform follow-up control. After the dial 1 rotates, it is convenient to feedback position information through the magnetic encoder to achieve closed-loop control. A first motor 4 is arranged on one side inside the housing 3, and a second motor 5 is installed on the other side inside the housing 3. The bottoms of the first motor 4 and the second motor 5 are connected to a magnetic head assembly 6. An installation plate 7 is installed on the inner side of the housing 3, and a wiring board 8 is arranged below the installation plate 7. The bottom end of the housing 3 is connected to a bottom cover 14, and a washer 9 is embedded at the bottom end of the bottom cover 14. A sealing ring 10 is arranged at the bottom end of the bottom cover 14. A cable assembly 11 is inserted into the bottom end of the bottom cover 14, and the cable assembly 11 is sleeved with the washer 9 and the sealing ring 10 of the cable assembly 11. A filter 12 is connected to the rear of one side at the bottom end of the installation plate 7, and a power supply module 13 is installed in front of one side at the bottom end of the installation plate 7. The power supply module 13 is electrically connected to the filter 12. The power supply module 13 is mainly used to supply power to the filter 12 and other electrical components. A signal processing board 15 is installed on the inner side of the housing 3, and a gear 16 is installed above the inner side of the housing 3. The gear 16 is connected to the output shaft of the second motor 5;
[0020] A lighting board 17 is arranged below the dial 1, and an index 2 is connected to the top of the dial 1. There are two groups of lighting boards 17, and the lighting board 17 is detachably connected to the housing 3 through bolts. The lighting board 17 can perform lighting operations, so that light can pass through the dial 1, facilitating people to view the information of the dial 1. A bearing ring 21 is sleeved outside the dial 1. The bearing ring 21 is mainly a component used in cooperation with the dial 1.
[0021] Working principle: When in use, after the device is firmly installed, it can be powered by the power supply module 13. After powering on the device, system initialization and device zeroing are first performed. After the dial is stable, the external ship's heading information is received through the RS422 or CAN interface. The internal circuit of the device compares the received external heading with the headings replicated by the coarse dial 20 and the fine dial 19, calculates the difference between the target heading and the heading value replicated by the dial 1, and drives two stepper motors according to the difference. Among them, the fine dial 19 is driven by the second motor 5, and the coarse dial 20 is driven by the first motor 4, so as to perform follow-up control. After the dial 1 rotates, the position information is fed back through the magnetic encoder to achieve closed-loop control until the heading difference is within the range of 0.1°, realizing the function of replicating the heading.
[0022] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.
Claims
1. A low-cost heading repeater device, comprising: The housing (3), characterized in that: a end cap (18) is installed at the top of the housing (3), and a dial (1) is arranged above the inner side of the housing (3). The dial (1) includes a fine dial (19), and a coarse dial (20) is arranged outside the fine dial (19). A first motor (4) is arranged on one side inside the housing (3), and a second motor (5) is installed on the other side inside the housing (3). The bottoms of the first motor (4) and the second motor (5) are connected to a magnetic head assembly (6). A mounting plate (7) is installed on the inner side of the housing (3), and a wiring board (8) is arranged below the mounting plate (7). The bottom end of the housing (3) is connected to a bottom cover (14), and a washer (9) is embedded at the bottom end of the bottom cover (14). A sealing ring (10) is arranged at the bottom end of the bottom cover (14). A cable assembly (11) is inserted into the bottom end of the bottom cover (14), and the cable assembly (11) is sleeved with the washer (9) and the sealing ring (10) of the cable assembly (11). A filter (12) is connected to the rear of one side at the bottom end of the mounting plate (7), and a power module (13) is installed in front of one side at the bottom end of the mounting plate (7). A signal processing board (15) is installed on the inner side of the housing (3), and a gear (16) is installed above the inner side of the housing (3). The gear (16) is connected to the output shaft of the second motor (5).
2. The low-cost heading repeater device according to claim 1, characterized in that: A lighting board (17) is arranged below the dial (1), and an index (2) is connected to the top of the dial (1).
3. A low-cost heading repeater device according to claim 1, characterized in that: An azimuth ring (21) is sleeved outside the dial (1).
4. A low-cost heading repeater device according to claim 1, characterized in that: The power module (13) is electrically connected to the filter (12).
5. The low-cost heading repeater device according to claim 2, characterized in that: There are two groups of the lighting boards (17), and the lighting boards (17) form a detachable structure with the housing (3) through bolts.
6. A low-cost heading repeater device according to claim 1, characterized in that: The center of the fine dial (19) coincides with the center of the coarse dial (20), and the bottom end of the coarse dial (20) is connected to the output end of the first motor (4).