A PLC redundancy-based precise positioning system
By combining the LSS laser scanning module, MSP magnetic ruler positioning module, PLC programmable controller and AE absolute encoder, along with gateway and protective cover, the problem of inaccurate positioning caused by encoder error in automated port machinery positioning is solved, realizing accurate positioning of automated port machinery and cable protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU WEIHUA OCEAN HEAVY IND CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-14
AI Technical Summary
In automated port machinery positioning, the encoder generates cumulative errors, leading to inaccurate positioning and preventing automated control.
The system employs the collaborative operation of an LSS laser scanning module, an MSP magnetic ruler positioning module, a PLC programmable controller, and an AE absolute encoder, combined with a gateway for protocol conversion, data exchange, and communication connection, to achieve real-time position analysis and adjustment. It is protected by a protective cover and a wire harness limiting mechanism.
It enables precise positioning of automated port machinery, prevents dust from entering the interface, protects cables, and improves the accuracy and reliability of the positioning system.
Smart Images
Figure CN224501191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of PLC redundant precision positioning system, specifically a PLC redundant precision positioning system. Background Technology
[0002] In automated port machinery control systems, automatic precision positioning systems are the primary prerequisite for achieving automatic control in the field of automation control.
[0003] However, automated port machinery positioning typically employs encoder positioning systems, which often accumulate errors during operation, leading to inaccurate automatic positioning and hindering automated control. Therefore, developing a PLC-based redundant precision positioning system is of significant practical importance. Utility Model Content
[0004] The purpose of this invention is to provide a PLC-based redundant precision positioning system to solve the problem mentioned in the background art, which is that automated port machinery positioning usually adopts encoder positioning system, and encoders often generate cumulative errors during operation, resulting in inaccurate automatic positioning and thus failing to achieve automated control.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a PLC-based redundant precision positioning system, comprising a gateway and a protective cover. Multiple interfaces are installed on one side of the gateway; these interfaces are sequentially connected via wire harnesses to an LSS laser scanning module, an MSP magnetic ruler positioning module, a PLC programmable controller, and an AE absolute encoder; the protective cover is rotatably connected to the gateway near the interfaces via a hinge, one end of the protective cover is provided with an angle adjustment mechanism for adjusting it, and one side of the protective cover is provided with a wire harness limiting mechanism for fixing the wire harness.
[0006] Furthermore, the angle adjustment mechanism includes a connecting shaft fixedly connected to one end of the protective cover plate, a limiting plate passing through the outer side of the connecting shaft, a limiting rod fixedly connected to one side of the limiting plate, a fixing block slidably connected to the outer side of the limiting rod, a spring abutting between the fixing block and the limiting plate, the inner side of the spring being sleeved with the limiting rod, and multiple sets of brushes fixedly connected to one side of the protective cover plate, the brushes being L-shaped.
[0007] Furthermore, one side of the fixing block is fixed to the gateway, the limiting rod is rectangular in shape, both ends of the limiting plate are arc-shaped, and the limiting plate has two sets of through holes that match the connecting shaft inside. The connecting shaft and the through holes inside the limiting plate form a locking structure.
[0008] Furthermore, the fixed block has a rectangular groove inside that matches the limiting rod, and the limiting rod and the fixed block form a sliding structure.
[0009] Furthermore, the wire harness limiting mechanism includes a bidirectional threaded rod rotatably connected to one side of the protective cover plate via a bearing. Both ends of the bidirectional threaded rod are threadedly connected to a movable plate. A rubber plate is fixedly connected to one side of the movable plate, and one side of the rubber plate is serrated.
[0010] Furthermore, a connecting block is fixedly connected to one side of the movable plate, and a sliding rod is slidably connected to one end of the connecting block. Both ends of the sliding rod are fixed to the protective cover plate, and the sliding rod and the connecting block form a sliding structure.
[0011] Compared with the prior art, the beneficial effects of this utility model are: the PLC-based redundant precision positioning system can achieve precise positioning through the collaborative cooperation between the LSS laser scanning module, the MSP magnetic ruler positioning module, the PLC programmable controller and the AE absolute encoder. The angle of the protective cover plate on the gateway side of the positioning system can be adjusted by the adjustment mechanism so that the protective cover plate protects the interface on the gateway side, and the wire harness is fixed by the wire harness limiting mechanism.
[0012] 1. Through the collaborative cooperation between the LSS laser scanning module, MSP magnetic ruler positioning module, PLC programmable controller and AE absolute encoder, and by using a gateway to perform protocol conversion, data exchange and communication connection for multiple groups of devices, real-time position analysis, verification and adjustment can be performed, thereby achieving automatic and accurate positioning.
[0013] 2. By pulling the limiting plate to disengage from the connecting shaft, and then rotating the protective cover, the interface on one side of the gateway is blocked. The cable can pass through the protective cover through the brush. This can protect the interface on the gateway side where no cable is inserted, preventing external dust from entering the interface where no connector is inserted. The cable limiting mechanism can limit the insertion of the cable. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional structural diagram of the gateway of this utility model;
[0016] Figure 3 This is a side view of the limiting plate structure of this utility model;
[0017] Figure 4 This utility model Figure 1 A magnified structural diagram at point A;
[0018] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the protective cover plate of this utility model;
[0019] Figure 6This is a schematic diagram of the three-dimensional structure of the rubber sheet of this utility model.
[0020] In the diagram: 1. Gateway; 2. LSS laser scanning module; 3. MSP magnetic ruler positioning module; 4. PLC programmable controller; 5. AE absolute encoder; 6. Protective cover plate; 7. Connecting shaft; 8. Limit plate; 9. Limit rod; 10. Spring; 11. Fixing block; 12. Brush; 13. Bidirectional threaded rod; 14. Moving plate; 15. Rubber plate; 16. Connecting block; 17. Slide rod. Detailed Implementation
[0021] 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.
[0022] Example 1: Please refer to Figure 1 The present invention provides the following technical solution: a PLC-based redundant precision positioning system, including a gateway 1 and a protective cover 6. Multiple sets of interfaces are installed on one side of the gateway 1; the multiple sets of interfaces are sequentially connected to an LSS laser scanning module 2, an MSP magnetic ruler positioning module 3, a PLC programmable controller 4 and an AE absolute encoder 5 via wire harnesses.
[0023] Please see Figure 1 This PLC-based redundant precision positioning system utilizes a PLC programmable controller 4 and an AE absolute encoder 5 for statistical calculations to detect the current position in real time. It measures, calculates, and verifies the real-time position information from the MSP magnetic ruler positioning module 3, and then uses an LSS laser scanning module 2 to create a three-dimensional coordinate scanning contour model, establishing a real-time three-dimensional spatial coordinate system. Subsequently, statistical and mathematical algorithms are used to analyze, verify, and adjust the real-time position, thereby achieving automatic and precise positioning. This system is a control system based on measurement, algorithm, and model redundancy. Gateway 1 enables protocol conversion, data exchange, and communication between the LSS laser scanning module 2, the MSP magnetic ruler positioning module 3, the PLC programmable controller 4, and the AE absolute encoder 5. Through these operations, precise positioning can be achieved. Example 2:
[0024] Please see Figures 1-4Based on Embodiment 1, the following specific structure is also disclosed: a protective cover plate 6 is rotatably connected to the side of the gateway 1 near the interface via a hinge. One end of the protective cover plate 6 is provided with an angle adjustment mechanism for adjusting it, and one side of the protective cover plate 6 is provided with a wire harness limiting mechanism for fixing the wire harness. The angle adjustment mechanism includes a connecting shaft 7 fixedly connected to one end of the protective cover plate 6, a limiting plate 8 passing through the outer side of the connecting shaft 7, a limiting rod 9 fixedly connected to one side of the limiting plate 8, a fixing block 11 slidably connected to the outer side of the limiting rod 9, a spring 10 abutting between the fixing block 11 and the limiting plate 8, and the inner side of the spring 10 sleeved with the limiting rod 9. Multiple [other components] are fixedly connected to one side of the protective cover plate 6. A set of brushes 12 are arranged in an L-shape. One side of the fixing block 11 is fixed to the gateway 1. The limiting rod 9 is rectangular in shape, and both ends of the limiting plate 8 are arc-shaped. The limiting plate 8 has two sets of through holes that match the connecting shaft 7. The connecting shaft 7 and the through holes inside the limiting plate 8 form a locking structure. The fixing block 11 has a rectangular groove that matches the limiting rod 9. The limiting rod 9 and the fixing block 11 form a sliding structure. In this PLC-based redundant precision positioning system, when multiple sets are connected to the gateway 1, the connector of the connecting cable needs to be inserted into the interface on one side of the gateway 1. In order to protect the interface without the connector inserted from dust, the limiting plate 8 is pulled, and the protective cover 6 is attached. Figure 2 As shown, in the unfolded state, the through holes in the limiting plate 8 will disengage from the connecting shaft 7 and compress the spring 10 on one side. Then, the protective cover 6 can be rotated 90° to block the interface on one side of the gateway 1. After that, the limiting plate 8 can be released. At this time, another set of through holes in the limiting plate 8 will engage with the connecting shaft 7, thereby completing the limiting of the protective cover 6. The cable can pass through the brush 12 to achieve the purpose of passing through the protective cover 6. The brush 12 will adapt to the shape of the cable and wrap the outside of the cable, thus preventing external dust from entering the interface where the connector is not inserted.
[0025] Please see Figure 1 , Figure 5 and Figure 6 The wire harness limiting mechanism includes a bidirectional threaded rod 13 rotatably connected to one side of the protective cover plate 6 via a bearing. Both ends of the bidirectional threaded rod 13 are threadedly connected to movable plates 14. A rubber plate 15 is fixedly connected to one side of the movable plate 14, and one side of the rubber plate 15 is serrated. When it is necessary to limit the cable, the bidirectional threaded rod 13 is rotated to drive the two sets of movable plates 14 through threaded transmission, so that the two sets of movable plates 14 move closer to each other. The movable plates 14 will drive the rubber plate 15 to move as well, so that the rubber plate 15 contacts the cable. The serrated rubber plate 15 can increase the contact area with the cable, thereby stably clamping and limiting the cable, preventing the cable from being pulled and causing damage to the end connector.
[0026] Please see Figure 5 and Figure 6 A connecting block 16 is fixedly connected to one side of the movable plate 14. A sliding rod 17 is slidably connected to one end of the connecting block 16. Both ends of the sliding rod 17 are fixed to the protective cover plate 6. The sliding rod 17 and the connecting block 16 form a sliding structure. When the movable plate 14 moves, the connecting block 16 on one side will slide outside the sliding rod 17. The sliding rod 17 will provide stable guidance, so that the movable plate 14 moves smoothly.
[0027] The above operations facilitate the protection of the gateway 1 interface in the PLC redundant precision positioning system.
[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A PLC-based redundant precision positioning system, comprising a gateway (1) and a protective cover (6), wherein multiple sets of interfaces are installed on one side of the gateway (1); Its features are: The multiple sets of interfaces are sequentially connected to the LSS laser scanning module (2), the MSP magnetic ruler positioning module (3), the PLC programmable controller (4), and the AE absolute encoder (5) via wire harnesses. The protective cover (6) is rotatably connected to the side of the gateway (1) near the interface by means of a hinge. One end of the protective cover (6) is provided with an angle adjustment mechanism for adjusting it, and one side of the protective cover (6) is provided with a wire harness limiting mechanism for fixing the wire harness.
2. The PLC-based redundant precision positioning system according to claim 1, characterized in that: The angle adjustment mechanism includes a connecting shaft (7) fixedly connected to one end of the protective cover plate (6), a limiting plate (8) passing through the outer side of the connecting shaft (7), a limiting rod (9) fixedly connected to one side of the limiting plate (8), a fixing block (11) slidably connected to the outer side of the limiting rod (9), a spring (10) abutting between the fixing block (11) and the limiting plate (8), the inner side of the spring (10) being sleeved with the limiting rod (9), and multiple sets of brushes (12) fixedly connected to one side of the protective cover plate (6), and the brushes (12) being L-shaped.
3. The PLC-based redundant precision positioning system according to claim 2, characterized in that: One side of the fixing block (11) is fixed to the gateway (1). The limiting rod (9) is rectangular in shape. Both ends of the limiting plate (8) are arc-shaped. The limiting plate (8) has two sets of through holes that match the connecting shaft (7). The connecting shaft (7) and the through holes inside the limiting plate (8) form a locking structure.
4. The PLC-based redundant precision positioning system according to claim 2, characterized in that: The fixed block (11) has a rectangular groove inside that matches the limiting rod (9), and the limiting rod (9) and the fixed block (11) form a sliding structure.
5. The PLC-based redundant precision positioning system according to claim 1, characterized in that: The wire harness limiting mechanism includes a bidirectional threaded rod (13) that is rotatably connected to one side of the protective cover plate (6) via a bearing. Both ends of the bidirectional threaded rod (13) are threadedly connected to a movable plate (14). A rubber plate (15) is fixedly connected to one side of the movable plate (14). One side of the rubber plate (15) is serrated.
6. The PLC-based redundant precision positioning system according to claim 5, characterized in that: A connecting block (16) is fixedly connected to one side of the movable plate (14), and a sliding rod (17) is slidably connected to one end of the connecting block (16). Both ends of the sliding rod (17) are fixed to the protective cover plate (6), and the sliding rod (17) and the connecting block (16) form a sliding structure.