Marine sensor system based on CAN bus communication

Abstract

The utility model relates to a marine sensor system based on CAN bus communication. The marine sensor system comprises a CCB communication module, a CAN HUB integrated module and a sensor module, the CCB communication module is located in a ship body control cabinet, and the CAN HUB integrated module comprises a first CAN interface and a second CAN interface; the number of the first CAN interfaces is one group, the CCB communication module is connected with the first CAN interfaces through a first cable, and the first cable is provided with a first connector which can be connected or disconnected; the sensor module is connected with the second CAN interface through a second cable, the sensor module comprises an integrated sensor composition module or / and a chained sensor composition module, and each of the integrated sensor composition module and the chained sensor composition module comprises a plurality of sensor bodies; according to the utility model, only one main communication cable is connected with the host to realize the communication of all sensor main bodies and the host under the link, so that the number of core wires is greatly reduced, the system redundancy is controlled, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship and ocean platform control, in particular to an ocean sensor system based on CAN bus communication. Background Art

[0002] Sensor systems are widely used in instrumentation and control systems and emergency alarm systems of underwater ships in marine environments, as well as marine platforms such as floating production storage and offloading vessels (FPSO). Using sensors to track and detect the position of targets and the corrosiveness of target points helps to understand the environmental parameters and status of the marine production process, thereby ensuring production.

[0003] In the current sensor systems of ships and offshore platforms, each sensor is used and controlled independently, and each is connected to the hull monitoring host through a cable, resulting in too many links and core wires. On the one hand, when the number of sensors is large, they cannot be processed in an integrated manner, and the transmission stability is insufficient, which brings many inconveniences to the installation and maintenance of the sensor system. On the other hand, in marine working conditions, when the number of sensors is large, more underwater connectors, underwater cables and other parts are required, and the overall production cost is too high. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the technical difficulties of insufficient integration of discrete control of marine sensor systems in the prior art, and to provide a marine sensor system based on CAN bus communication, which merges the transmission wires of multiple sensors, has higher system integration and greater control flexibility in the number of sensors.

[0005] In order to solve the above technical problems, the utility model provides an ocean sensor system based on CAN bus communication, which includes:

[0006] CCB communication module, the CCB communication module is located in the hull control cabinet;

[0007] A CAN HUB integrated module, the CAN HUB integrated module comprising a first CAN interface and a second CAN interface; the first CAN interface has a group, the CCB communication module is connected to the first CAN interface of the CAN HUB integrated module via a first cable, and the first cable is provided with a first connector that can be connected or disconnected;

[0008] A sensor module, wherein the sensor module is connected to the second CAN interface of the CAN HUB integrated module via a second cable, the second CAN interface has a plurality of groups, and the second cable is provided with a second connector that can be connected or disconnected; the sensor module includes an integrated sensor component module and / or a chain sensor component module, and the integrated sensor component module and the chain sensor component module both include a plurality of sensor bodies.

[0009] In one embodiment of the present invention, the integrated sensor component module further includes a first CTB, the first CTB includes an upper wiring terminal, and the upper wiring terminal is connected to the CAN HUB integrated module through the second cable.

[0010] In one embodiment of the present invention, the first CTB also includes a lower terminal; the lower terminal includes a reference terminal and a first terminal, the reference terminal has a group and is connected to a first reference electrode; the first terminal is used to connect the sensor body in the integrated sensor component module.

[0011] In one embodiment of the present utility model, the sensor bodies in the integrated sensor module are connected to the first wiring terminals in a one-to-one correspondence, and the number of the first wiring terminals is greater than or equal to the number of the sensor bodies in the integrated sensor module.

[0012] In one embodiment of the utility model, the chain sensor component module also includes a second CTB, each group of the second CTB has two groups of connection ends; the second CTBs are connected end to end in sequence through the connection ends to form a second CTB group, and one end of the second CTB group is connected to the CAN HUB integrated module through the second cable.

[0013] In one embodiment of the present invention, the second CTB further includes a second terminal, and the second terminal of one group of the second CTBs in the second CTB group is used to connect a second reference electrode; the second terminals of the other second CTBs in the second CTB group are connected one-to-one with the sensor bodies in the chain sensor module.

[0014] In an embodiment of the present invention, the first joint, the second joint, both ends of the first cable, and both ends of the second cable are all configured as vulcanized sealing structures.

[0015] In one embodiment of the present invention, the sensor body is configured as an inductive proximity sensor.

[0016] In one embodiment of the utility model, a shell is provided on the outside of the sensor body, the shell is arranged through and one end of which is fixed to the mounting seat; an adjusting member is arranged inside the shell to connect the sensor body, and the adjusting member is used to adjust the relative position of the sensor body in the shell.

[0017] In one embodiment of the present invention, the adjusting member is configured as a rotatably adjustable mounting nut, and the mounting nut is threadably connected to the outer periphery of the sensor body.

[0018] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0019] The ocean sensor system based on CAN bus communication described in the utility model can realize the connection between all sensor bodies and the host under this link by connecting to the host of the hull only through one main communication cable, which greatly reduces the number of core wires, controls system redundancy, reduces construction difficulty, and saves material costs;

[0020] The marine sensor system based on CAN bus communication described in the utility model is realized based on CAN bus communication, has strong anti-electromagnetic interference capability, long transmission distance, and large amount of information transmitted; the number of sensors that can be mounted by CAN transmission method is huge, and the number of sensor bodies in the sensor system can be flexibly adjusted, and can be flexibly configured and increased or decreased through physical methods according to different usage requirements;

[0021] The ocean sensor system based on CAN bus communication described in the utility model is suitable for ocean working conditions and underwater operating environments and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the composition of the ocean sensor system in the preferred embodiment of the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the integrated sensor module;

[0025] Figure 3 for Figure 1 Schematic diagram of the chain sensor module;

[0026] Figure 4 This is a communication flow chart of the ocean sensor system in the preferred embodiment of the utility model;

[0027] Figure 5This is a schematic diagram of the structure of the chain sensor component module in the preferred embodiment of the utility model;

[0028] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure after enlargement at the middle A;

[0029] Figure 7 It is a schematic diagram of the structure of the integrated sensor component module in the preferred embodiment of the utility model.

[0030] Explanation of the reference numerals in the specification: 1. CCB communication module; 2. CAN HUB integrated module; 21. First CAN interface; 22. Second CAN interface; 3. Sensor module; 4. Integrated sensor component module; 41. First CTB; 42. Upper wiring terminal; 43. Lower wiring terminal; 4301. Reference wiring terminal; 4302. First wiring terminal; 5. Chain sensor component module; 51. Second CTB; 5101. Connecting terminal; 5102. Second wiring terminal; 6. Sensor body; 61. Spare sensor; 71. First reference electrode; 72. Second reference electrode; 81. First cable; 82. Second cable; 83. First connector; 84. Second connector; 91. Shell; 92. Mounting seat; 93. Mounting nut; 94. Fixing nut. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Example

[0033] Reference Figure 1 to Figure 7 As shown, the utility model provides an ocean sensor system based on CAN bus communication; the ocean sensor system is configured as a modular structure, which includes a CCB communication module 1, a CAN HUB integration module 2 and a sensor module 3, and the modules are connected by underwater connectors; compared with traditional marine environment position sensors, the sensor system provided by the utility model can solve the problem of too many signal transmission wires for multiple sensors, merge and simplify the transmission wires, improve the integration of the sensor system by establishing new communication connections, solve the manufacturing and installation problems caused by too many core wires, and reasonably control the layout cost.

[0034] Specifically, refer to Figure 1 to Figure 4As shown, the CCB communication module 1 is located in a control cabinet, and the control cabinet is located in the cabin master control room. The CCB communication module 1 is connected to the CAN HUB integrated module 2 through a first cable 81; the master control room receives the transmission signal of each sensor through the master CAN communication system. The first cable 81 is provided with a first connector 83 that can be connected or disconnected, and the connection and disconnection of the CCB communication module 1 and the CAN HUB integrated module 2 are controlled by the first connector 83.

[0035] Specifically, refer to Figure 1 As shown, the CAN HUB integrated module 2 includes a first CAN interface 21 and a second CAN interface 22; the first CAN interface 21 has a group, the first CAN interface 21 communicates with the CCB communication module 1 through the first cable 81, and the first cable 81 participates in the connection as an "umbilical cable"; the second CAN interface 22 has several groups, the sensor module 3 is connected to the CAN HUB integrated module 2 through the second cable 82, and the second CAN interface 22 communicates with the sensor module 3 through the second cable 82. The first cable 81 is used as the main communication cable, and the CANHUB integrated module 2 is set to receive the signals of multiple sensor bodies in the sensor module 3, forming a communication method based on the CAN bus, which has the advantages of strong anti-electromagnetic interference ability, long transmission distance, and large amount of information transmission.

[0036] Specifically, refer to Figure 1 As shown, the sensor module 3 includes an integrated sensor component module 4 and / or a chain sensor component module 5; the integrated sensor component module 4 can be provided with one or more groups, and the chain sensor component module 5 can be provided with one or more groups, and the integrated sensor component module 4 and the chain sensor component module 5 each include a plurality of sensor bodies 6. In the embodiment of the utility model, the number and combination of the integrated sensor component module 4 and the chain sensor component module 5 can be determined according to the actual needs of underwater operations, and the second cable 82 is provided with a second connector 84 that can be connected or disconnected, through which the integrated sensor component module 4 and the chain sensor component module 5 can be freely combined and independently connected to the second CAN interface 22 to realize transmission communication.

[0037] Further, refer to Figure 1 , Figure 2 and Figure 7As shown, the integrated sensor component module 4 includes the sensor body 6 and the first CTB41; the first CTB41 is set as a CTB integrated box, which includes an upper terminal 42 and a lower terminal 43; the upper terminal 42 is connected to the second CAN interface 22 of the CAN HUB integrated module 2 through the second cable 82; the lower terminal 43 includes a reference terminal 4301 and a first terminal 4302, the reference terminal 4301 has a group, the reference terminal 4301 is connected to the first reference electrode 71, and is used to provide a stable potential reference point; the lower terminal 43 except the reference terminal 4301 is set as the first terminal 4302, the first terminal 4302 is used to connect the sensor body 6 in the integrated sensor component module 4, each group of the sensor body 6 is connected to a group of the first terminal 4302 through a third cable, and the sensor body 6 is connected to the first terminal 4302 in a one-to-one correspondence.

[0038] Continuing, in a preferred embodiment of the utility model, in order to meet the sensor detection requirements, the number of the first terminals 4302 is greater than or equal to the number of the sensor bodies 6 in the integrated sensor component module 4; it should be noted that the reference terminal 4301 has the same structure as the first terminal 4302, that is, one of the lower terminals 43 of the CTB integrated box is used to connect the reference electrode, and the other lower terminals 43 are used to connect the sensor body 6; when the number of the sensor bodies 6 is large, the assembly of the integrated sensor component module 4 can be achieved by replacing the CTB integrated box with a larger number of terminals, and the total number of terminals of the first CTB41 can be set to 14, or set according to actual needs, but is not limited to this.

[0039] Further, refer to Figure 1 , Figure 3 and Figure 5 As shown, the chain sensor component module 5 includes the sensor body 6 and the second CTB51; the second CTB51 is configured as a CTB box, which has fewer wiring ports than the CTB integrated box; in the chain sensor component module 5, each group of the second CTB51 has two groups of connection ends 5101, and the two groups of connection ends 5101 are connected end to end in sequence to form a second CTB group in series, and one end of the second CTB group is connected to the CAN HUB integrated module 2 through the second cable 82.

[0040] Continue, refer to Figure 1As shown, the second CTB51 also includes a second terminal 5102, and the second terminal 5102 of one group of the second CTB511 in the second CTB group is used to connect the second reference electrode 72; the other second CTB51 in the second CTB group is connected to the sensor body 6 in the chain sensor component module 5 through the second terminal 5102 in a one-to-one correspondence.

[0041] Specifically, in the integrated sensor component module 4, the positioning of all sensor bodies 6 is confirmed by a group of the first CTBs 41; in the chain sensor component module 5, the second CTBs 51 individually locate each sensor body 6 and transmit information.

[0042] Next, in the integrated sensor component module 4 and the chain sensor component module 5, the sensor body 6 can be set to the same specifications, or can be set to different specifications according to the detection requirements. In the integrated sensor component module 4, the number of the sensor bodies 6 is limited by the number of the first wiring terminals 4302, and can be expanded by replacing the first CTB41 with more ports; in the chain sensor component module 5, the number of the sensor bodies 6 is limited by the number of the second wiring terminals 5102, and the number of the sensor bodies 6 can be expanded by increasing the number of the second CTB51 in series. In some embodiments, in order to improve system reliability, the number of the first wiring terminals 4302 and the number of the second CTB51 can be set with appropriate redundancy, and cooperate with the spare sensor 61 as an emergency plan for detection operations.

[0043] The inventor of this case has found that the existing position sensors used in underwater equipment have defects such as insufficient waterproof performance, poor corrosion resistance, poor cable durability, and unstable long-distance signal transmission; the above defects are more obvious in the design with more cables in the existing sensor system. Accordingly, in the preferred embodiment of the utility model, in the first aspect, the inlet and outlet at both ends of the first cable 81, the second cable 82 and the third cable, the first connector 83, the second connector 84, other transverse watertight cable connections in the sensor system, and the exterior of the CCB communication module 1, the CAN HUB integrated module 2 and the sensor module 3 are all vulcanized to form a vulcanized sealing structure, so that the sensor system as a whole and all parts inside have a good watertight effect, and can have a long service life in marine conditions. Secondly, the sensor body 6 is configured as an inductive proximity sensor; the sensor body 6 is a high-pressure resistant sensor, suitable for underwater high-pressure environments in marine conditions; the sensor body 6 is fully metal packaged, and has stronger resistance to seawater corrosion; in addition, as a non-contact sensor, the inductive proximity sensor has a longer service life than traditional travel switches, saving replacement costs; thirdly, through the CAN output method, it can be hung on a larger number of sensor bodies 6, with a longer transmission distance and a larger amount of information transmitted.

[0044] Specifically, since ships and other operating equipment in the marine environment are large in size, errors during their production and processing can easily affect the accuracy of the sensor in detecting the target object; in the prior art, the sensor position needs to be adjusted and then fixed, which is cumbersome and affects efficiency; in an embodiment of the utility model, the sensor body 6 is externally sleeved with a shell 91, and an adjustment member is provided inside the shell 91 to connect the sensor body 6; the shell 91 is set through and one end is fixed to the mounting seat 92, and the mounting seat 92 is a preset installation detection position of the sensor body 6. In this embodiment, the relative position of the sensor body 6 in the installation direction is fine-tuned by the shell 91 and the adjustment member in the shell 91.

[0045] Further, refer to Figure 6 As shown, a fixing nut 94 is provided in the housing 91; the fixing nut 94 fixes the sensor body 6 to the installation position of the mounting seat 92 to prevent it from being displaced by the disturbance of the marine environment or the influence of the core line arrangement; the adjusting member is set as a rotatable and adjustable mounting nut 93 in the housing 91, and the mounting nut 93 is connected with the outer peripheral thread of the sensor body 6; the relative movement of the sensor body 6 is achieved by adjusting the mounting nut 93, and then the distance between the end face of the sensor body 6 and the target moving part is achieved, which is convenient for detecting position control and improving the accuracy of the results. The adjustable sensor mounting structure in the utility model can overcome the processing error of underwater equipment.

[0046] The working principle of the ocean sensor system based on CAN bus communication described in the utility model is as follows:

[0047] Reference Figure 4 As shown, each sensor body 6 corresponds to a unique target moving part; after being adjusted by the mounting nut 93, the sensor body 6 collects the relative position signal of the corresponding target moving part, and outputs an analog signal positively correlated with the relative position signal based on the relative position signal; at the same time, the sensor body 6 also outputs a switch signal indicating that the target moving part is in place, and outputs the signals of the two modes to the corresponding CAN control system.

[0048] In the integrated sensor component module 4, the corresponding CAN control system is the first CTB41, and the position signal and the analog signal of the relative position output by the sensor body 6 are transmitted to the first CTB41; in the chain sensor component module 5, the corresponding CAN control system is the second CTB51, and the position signal and the analog signal of the relative position output by the sensor body 6 are transmitted to the second CTB51.

[0049] The CAN control system receives two signals and converts them into CAN differential signals for transmission to the upper CAN HUB integrated module 2. The CAN HUB integrated module 2 serves as the overall CAN communication system in the communication process. Each CAN control system aggregates the differential signals to the cabin master control room through the overall CAN system to obtain the position detection results between the target moving parts and the supporting parts of the underwater operating equipment.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A marine sensor system based on CAN bus communication, characterized in that: include, CCB communication module, the CCB communication module is located in the hull control cabinet; A CAN HUB integrated module, the CAN HUB integrated module comprising a first CAN interface and a second CAN interface; the first CAN interface has a group, the CCB communication module is connected to the first CAN interface of the CAN HUB integrated module via a first cable, and the first cable is provided with a first connector that can be connected or disconnected; A sensor module, wherein the sensor module is connected to the second CAN interface of the CAN HUB integrated module via a second cable, the second CAN interface has a plurality of groups, and the second cable is provided with a second connector that can be connected or disconnected; the sensor module includes an integrated sensor component module and / or a chain sensor component module, and the integrated sensor component module and the chain sensor component module both include a plurality of sensor bodies.

2. The ocean sensor system based on CAN bus communication according to claim 1, characterized in that: The integrated sensor component module further includes a first CTB, wherein the first CTB includes an upper wiring terminal, and the upper wiring terminal is connected to the CAN HUB integrated module through the second cable.

3. The ocean sensor system based on CAN bus communication according to claim 2 is characterized in that: The first CTB also includes a lower terminal; the lower terminal includes a reference terminal and a first terminal, the reference terminal has a group and is connected to a first reference electrode; the first terminal is used to connect the sensor body in the integrated sensor component module.

4. The ocean sensor system based on CAN bus communication according to claim 3 is characterized in that: The sensor bodies in the integrated sensor module are connected to the first wiring terminals in a one-to-one correspondence, and the number of the first wiring terminals is greater than or equal to the number of the sensor bodies in the integrated sensor module.

5. The ocean sensor system based on CAN bus communication according to claim 1, characterized in that: The chain sensor component module also includes a second CTB, each group of the second CTBs has two groups of connection ends; the second CTBs are connected end to end in sequence through the connection ends to form a second CTB group, and one end of the second CTB group is connected to the CAN HUB integrated module through the second cable.

6. The ocean sensor system based on CAN bus communication according to claim 5, characterized in that: The second CTB also includes a second terminal, and the second terminal of one group of the second CTBs in the second CTB group is used to connect to a second reference electrode; the second terminals of the other second CTBs in the second CTB group are connected one-to-one with the sensor bodies in the chain sensor module.

7. The ocean sensor system based on CAN bus communication according to any one of claims 1 to 6, characterized in that: The first joint, the second joint, both ends of the first cable, and both ends of the second cable are all configured as vulcanized sealing structures.

8. The ocean sensor system based on CAN bus communication according to any one of claims 1 to 6, characterized in that: The sensor body is configured as an inductive proximity sensor.

9. The ocean sensor system based on CAN bus communication according to claim 1, characterized in that: The sensor body is externally sleeved with a shell, the shell is through-set and one end of which is fixed to a mounting seat; an adjusting member is disposed inside the shell to connect the sensor body, and the adjusting member is used to adjust the relative position of the sensor body in the shell.

10. The ocean sensor system based on CAN bus communication according to claim 9, characterized in that: The adjusting member is configured as a rotatably adjustable mounting nut, and the mounting nut is threadably connected to the outer periphery of the sensor body.

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