CN115535187B - Ship shafting state monitoring and fault intelligent diagnosis system - Google Patents

Ship shafting state monitoring and fault intelligent diagnosis system Download PDF

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Publication number
CN115535187B
CN115535187B CN202211483696.9A CN202211483696A CN115535187B CN 115535187 B CN115535187 B CN 115535187B CN 202211483696 A CN202211483696 A CN 202211483696A CN 115535187 B CN115535187 B CN 115535187B
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shafting
module
ship shafting
ship
monitoring
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CN115535187A (en
Inventor
何景异
董彬
李光明
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719th Research Institute of CSIC
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719th Research Institute of CSIC
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B79/00—Monitoring properties or operating parameters of vessels in operation
    • B63B79/30—Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B79/00—Monitoring properties or operating parameters of vessels in operation
    • B63B79/40—Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
    • G06V20/54—Surveillance or monitoring of activities, e.g. for recognising suspicious objects of traffic, e.g. cars on the road, trains or boats
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Abstract

The invention relates to the technical field of machine testing, in particular to a ship shafting state monitoring and fault intelligent diagnosis system, which comprises: the control terminal is a main control end of the system and is used for sending out a control command; the acquisition module is used for acquiring basic parameters of a ship shafting; the monitoring module is used for monitoring the states of the ship shafting in running and non-running use environments; the evaluation module is used for evaluating whether the current state of the ship shafting component is normal or not; the method can effectively carry out specific parameter analysis on the ship shafting, and capture the real-time state of the ship shafting in the using process by adopting a mode of configuring shafting rotating speed monitoring and ship shafting component image data monitoring so as to realize fault detection and diagnosis of the ship shafting, the diagnosis result is accurate, and the fault point of the ship shafting component can be further judged by the acquisition source of the image data, so that the development of maintenance work of the ship shafting by workers is facilitated.

Description

Ship shafting state monitoring and fault intelligent diagnosis system
Technical Field
The invention relates to the technical field of machine testing, in particular to a ship shafting state monitoring and fault intelligent diagnosis system.
Background
The ship shafting is an important component in the ship power device, and bears the power transmitted by the main engine and transmits the power to the propeller, and then transmits the axial thrust generated by the propeller to the ship body to realize the purpose of pushing the ship to sail, and the ship shafting is from the flange of the output end of the main engine to the tail shaft, and is connected with the main engine and the propeller, and for a direct transmission propulsion system, the ship shafting mainly comprises a transmission shaft for transmitting power, a bearing and other parts: thrust shafts and thrust bearings, intermediate shafts and intermediate bearings, tail shafts and tail bearings, and other accessories; for indirect drive propulsion systems, in addition to the above mentioned drive shaft and bearings, there are also components such as clutches, elastic couplings and reduction gearboxes.
However, most of the existing ship shafting is maintained by means of manual periodic maintenance in the use process, and real-time monitoring and fault diagnosis cannot be performed on the ship shafting in the operation process, so that the problem of the ship shafting cannot be found in time, the ship shafting cannot be detected by a user after being further damaged, the damage to the ship shafting or high maintenance cost are caused, and the service life of the ship shafting is not naturally consumed.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides a ship shafting state monitoring and fault intelligent diagnosis system, which solves the technical problems in the background technology.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a ship shafting state monitoring and fault intelligent diagnosis system comprises:
the control terminal is a main control end of the system and is used for sending out a control command;
the acquisition module is used for acquiring basic parameters of a ship shafting;
the monitoring module is used for monitoring the states of the ship shafting in the operating and non-operating use environments;
the evaluation module is used for evaluating whether the current state of the ship shafting component is normal;
the alarm module is used for sending out an audio alarm to prompt ship shafting managers that the ship shafting runs abnormally;
the source tracing module is used for obtaining an evaluation result of the operation of the evaluation module as that the abnormal image data corresponds to the camera module, and determining an abnormal ship shafting component corresponding to the abnormal image data by referring to the installation position of the camera module;
the feedback module is used for receiving the abnormal ship shafting component acquired by the operation result of the source tracing module and sending the abnormal ship shafting component to the control terminal;
the crankshaft position sensor at the lower stage of the monitoring module operates synchronously, and abnormal ship shafting component parts are determined through the source tracing module.
Further, the ship shafting basic parameters collected in the collection module include: the method comprises the steps of constructing component life cycles of the ship shafting, specification parameters of the ship shafting, configuration of dead weight and load of a ship body of the ship shafting, whole span of the ship shafting and running power of the ship shafting.
Still further, the monitoring module is provided with sub-modules at a lower level, including:
the crankshaft position sensor is used for monitoring the real-time rotating speed of a ship shafting;
the analysis unit is used for acquiring basic parameters of the ship shafting acquired by the acquisition module and analyzing the mountable position of the camera module by referring to the basic parameters of the ship shafting;
the selecting unit is used for obtaining the mountable position of the camera module obtained by the operation analysis of the analyzing unit, and selecting the mountable position of the camera module for mounting by referring to the parameter data of the integral span of the ship shafting in the basic parameters of the ship shafting;
and the camera module is used for capturing video data of the installation position of the ship shafting component.
Furthermore, the crankshaft position sensor synchronously triggers and operates along with the starting of the ship shafting, the crankshaft position sensor operates to capture the real-time rotating speed of a transmission shaft in the ship shafting in real time, and the captured real-time rotating speed of the transmission shaft is periodically fed back to the control terminal in a period setting mode.
Furthermore, the video recording frame number rate of the camera module is matched with the rotating speed of a transmission shaft of a ship shaft system, the camera module captures initial state image data of the transmission shaft and other components of the ship shaft system in a non-running state of the ship shaft system, comparison points are set in the initial image data, and position comparison based on the image data of the frame as reference is carried out on the positions of the comparison points in the video data frame captured in the camera module and the positions of the comparison points set in the initial image data.
Still further, the evaluation module is provided with sub-modules at a lower level, including:
the setting unit is used for setting a comparison safety threshold value of the comparison point location;
the recording unit is used for recording the comparison point location difference value;
the setting unit is used for judging whether the comparison result is within a comparison safety threshold value after the initial comparison point location and the current comparison point location are compared by the camera module, and triggering the alarm module to operate if the comparison result is not.
Furthermore, the recording unit records the comparison point difference in real time and sends the comparison point difference to the control terminal when the accumulated recorded comparison point difference data is larger than or equal to 10 k.
Furthermore, a sub-module is arranged inside the alarm module, and comprises:
the triggering unit is used for acquiring the control authority of the ship shafting to control the ship shafting to stop running;
the trigger unit triggers operation according to trigger logic, wherein the trigger logic is as follows: and the ship shafting management personnel do not control and operate the ship shafting at the control terminal within thirty seconds after the alarm module operates.
Furthermore, the shafting load limiting condition of the whole span of the ship shafting in the ship shafting basic parameters in the acquisition module is calculated by the following formula:
Figure DEST_PATH_IMAGE001
；
in the formula:
Figure 468286DEST_PATH_IMAGE002
allowing the minimum load on the shafting;
Figure DEST_PATH_IMAGE003
dead weight of a left span of a shaft system;
Figure 445601DEST_PATH_IMAGE004
dead weight of right span of the shafting;
Figure DEST_PATH_IMAGE005
is the sum of external loads on two spans of the shaft system.
Furthermore, the control terminal is electrically connected with an acquisition module and a monitoring module through a medium, the monitoring module is electrically connected with a crankshaft position sensor, an analysis unit and a selection unit through the medium, the analysis unit and the selection unit are electrically connected with a camera module through the medium, the monitoring module is electrically connected with an evaluation module through the medium, the evaluation module is electrically connected with a setting unit and a recording unit through the medium, the recording unit is electrically connected with the control terminal through the medium, the evaluation module is electrically connected with an alarm module through the medium, the alarm module is internally electrically connected with a trigger unit through the medium, and the alarm module is electrically connected with a source tracing module and a feedback module through the medium.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention provides a ship shafting state monitoring and fault intelligent diagnosis system, which can effectively carry out specific parameter analysis on a ship shafting during operation, captures the real-time state of the ship shafting in the using process by adopting a mode of configuring shafting rotating speed monitoring and ship shafting component image data monitoring so as to realize fault detection and diagnosis of the ship shafting, has accurate diagnosis result, and can further judge fault points of the ship shafting component through the acquisition source of image data so as to facilitate the development of maintenance work of the ship shafting by workers.
2. According to the method, the fault point location of the ship shafting can be positioned, the timeliness of the fault point location determination of the ship shafting can be effectively improved, so that the purpose of rapidly solving the fault of the ship shafting is achieved, the alarm function is configured, further aggravation of the fault of the ship shafting is prevented, meanwhile, a worker can be prompted, and the worker can be ensured to know the real-time condition of the ship shafting in time.
3. The rotating speed of the transmission shafting in the components of the ship shafting can be monitored in real time and provided to the user in a feedback mode, so that the user can know the use condition of the ship shafting more conveniently, and can predict the fault of the ship shafting to a certain extent and perform targeted maintenance operation planning, thereby ensuring that the ship shafting can run more stably in the application process.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of a marine shafting state monitoring and fault intelligent diagnosis system;
the reference numerals in the drawings denote: 1. a control terminal; 2. an acquisition module; 3. a monitoring module; 31. a crankshaft position sensor; 32. an analysis unit; 33. a selection unit; 34. a camera module; 4. an evaluation module; 41. a setting unit; 42. a recording unit; 5. an alarm module; 51. a trigger unit; 6. a source tracing module; 7. and a feedback module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The ship shafting state monitoring and fault intelligent diagnosis system of this embodiment, as shown in fig. 1, includes:
the control terminal 1 is a main control end of the system and is used for sending out a control command;
the acquisition module 2 is used for acquiring basic parameters of a ship shafting;
the monitoring module 3 is used for monitoring the states of the ship shafting in running and non-running use environments;
the evaluation module 4 is used for evaluating whether the current state of the ship shafting component is normal;
the alarm module 5 is used for sending out an audio alarm to prompt ship shafting managers that the ship shafting runs abnormally;
the source tracing module 6 is used for acquiring an operation evaluation result of the evaluation module 4 as that abnormal image data corresponds to the camera module 34, and determining an abnormal ship shafting component corresponding to the abnormal image data by referring to the installation position of the camera module 34;
the feedback module 7 is used for receiving the abnormal ship shafting component acquired by the operation result of the source tracing module 6 and sending the abnormal ship shafting component to the control terminal 1;
wherein, the crankshaft position sensor 31 of the monitoring module 3 lower stage runs synchronously and confirms abnormal ship shafting components through the tracing module 6.
In this embodiment, the control terminal 1 controls the acquisition module 2 to acquire basic parameters of a ship shafting, the monitoring module 3 monitors the states of the ship shafting in an operating and non-operating use environment in real time, whether the current state of components of the ship shafting is normal is evaluated through the evaluation module 4, when the evaluation result of the evaluation module 4 is negative, the alarm module 5 starts to send an audio alarm to prompt a ship shafting manager that the ship shafting is abnormally operated, the traceability module 6 operates in a rear position to acquire that the evaluation result of the operation of the evaluation module 4 is that the abnormal image data corresponds to the camera module 34, the abnormal image data corresponds to the abnormal components of the ship shafting with reference to the installation position of the camera module 34, and finally the feedback module 7 receives the abnormal components of the ship shafting acquired by the operation result of the traceability module 6 and sends the abnormal components of the ship shafting to the control terminal 1.
Example 2
In a specific implementation aspect, on the basis of embodiment 1, this embodiment further specifically describes a ship shafting state monitoring and fault intelligent diagnosis system in embodiment 1 with reference to fig. 1:
the ship shafting basic parameters collected in the collection module 2 comprise: the method comprises the steps of constructing component life cycles of the ship shafting, specification parameters of the ship shafting, configuration of dead weight and load of a ship body of the ship shafting, whole span of the ship shafting and running power of the ship shafting.
As shown in fig. 1, the monitoring module 3 is provided with sub-modules at a lower level, including:
the crankshaft position sensor 31 is used for monitoring the real-time rotating speed of a ship shafting;
the analysis unit 32 is used for acquiring ship shafting basic parameters acquired by the operation of the acquisition module 2 and analyzing the mountable position of the camera module 34 by referring to the ship shafting basic parameters;
the selecting unit 33 is used for acquiring the mountable position of the camera module 34 obtained by the operation analysis of the analyzing unit 32, and selecting the mountable position of the camera module 34 for mounting by referring to the parameter data of the overall span of the ship shafting in the basic parameters of the ship shafting;
and the camera module 34 is used for capturing video data of the installation positions of the ship shafting component parts.
In this embodiment, the crankshaft position sensor 31 operates to monitor the real-time rotation speed of the ship shafting, the analysis unit 32 obtains the ship shafting basic parameters collected by the operation of the collection module 2, analyzes the mountable position of the camera module 34 by referring to the ship shafting basic parameters, the selection unit 33 operates in the rear position to obtain the ship shafting basic parameters collected by the operation of the collection module 2, analyzes the mountable position of the camera module 34 by referring to the ship shafting basic parameters, and captures the video data of the mounting position of the ship shafting component through the camera module 34.
As shown in fig. 1, the crankshaft position sensor 31 operates synchronously with the start of the ship shafting, and the crankshaft position sensor 31 operates to capture the real-time rotating speed of the transmission shaft in the ship shafting in real time and periodically feed back the captured real-time rotating speed of the transmission shaft to the control terminal 1 in a period setting manner.
As shown in fig. 1, the video recording frame rate of the camera module 34 is adapted to the rotating speed of the transmission shaft of the ship shafting, the camera module 34 captures the initial state image data of the transmission shaft of the ship shafting and other components in the non-operating state of the ship shafting, and sets a comparison point location in the initial image data, and performs position comparison based on the image frame image data as a reference on the current position of the comparison point location in the video data image frame captured by the camera module 34 and the position of the comparison point location set in the initial image data.
Through the comparison, whether the current ship shafting component is abnormal or not can be accurately judged, so that the operation data support is provided for the alarm module 5.
Example 3
In a specific implementation aspect, on the basis of embodiment 1, this embodiment further specifically describes a ship shafting state monitoring and fault intelligent diagnosis system in embodiment 1 with reference to fig. 1:
the evaluation module 4 is provided with sub-modules at a lower level, including:
a setting unit 41, configured to set a comparison safety threshold of the comparison point location;
a recording unit 42, configured to record a comparison point location difference;
after the camera module 34 compares the initial comparison point location with the current comparison point location, the setting unit 41 determines whether the comparison result is within the comparison safety threshold, and triggers the alarm module 5 to operate if the comparison result is negative.
Through the arrangement of the sub-modules at the lower level of the evaluation module 4, accurate judgment logic can be provided for the evaluation module 4.
As shown in fig. 1, the recording unit 42 records the comparison point difference in real time, and transmits the comparison point difference data to the control terminal 1 when the comparison point difference data is cumulatively recorded to be not less than 10 k.
As shown in fig. 1, the alarm module 5 is internally provided with sub-modules, including:
the triggering unit 51 is used for acquiring the control authority of the ship shafting to control the ship shafting to stop running;
the triggering unit 51 triggers and operates according to triggering logic, where the triggering logic is: and thirty seconds after the alarm module 5 operates, the ship shafting management personnel do not control and operate the ship shafting at the control terminal 1.
So set up to system operation control boats and ships shafting and brought the braking effect of certain degree to for the operation of boats and ships shafting is more intelligent, and possesses the trusteeship effect of certain degree.
As shown in fig. 1, the shafting load limiting condition of the overall span of the ship shafting in the basic parameters of the ship shafting in the acquisition module 2 is calculated by the following formula:
Figure 31434DEST_PATH_IMAGE001
；
in the formula:
Figure 634454DEST_PATH_IMAGE002
allowing the minimum load on a shaft system;
Figure 809083DEST_PATH_IMAGE003
dead weight of a shaft system left span;
Figure 160561DEST_PATH_IMAGE004
dead weight of right span of the shafting;
Figure 217379DEST_PATH_IMAGE005
is the sum of external loads on two spans of the shaft system.
As shown in fig. 1, the control terminal 1 is electrically connected with the acquisition module 2 and the monitoring module 3 through a medium, the monitoring module 3 is electrically connected with the crankshaft position sensor 31, the analysis unit 32 and the selection unit 33 through a medium, the analysis unit 32 and the selection unit 33 are electrically connected with the camera module 34 through a medium, the monitoring module 3 is electrically connected with the evaluation module 4 through a medium, the evaluation module 4 is electrically connected with the setting unit 41 and the recording unit 42 through a medium, the recording unit 42 is electrically connected with the control terminal 1 through a medium, the evaluation module 4 is electrically connected with the alarm module 5 through a medium, the alarm module 5 is internally electrically connected with the trigger unit 51 through a medium, and the alarm module 5 is electrically connected with the traceability module 6 and the feedback module 7 through a medium.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a boats and ships shafting state monitoring and trouble intelligent diagnosis system which characterized in that includes:
the control terminal (1) is a main control end of the system and is used for sending out a control command;
the acquisition module (2) is used for acquiring basic parameters of a ship shafting;
the monitoring module (3) is used for monitoring the states of the ship shafting in running and non-running use environments;
the evaluation module (4) is used for evaluating whether the current state of the ship shafting component is normal;
the alarm module (5) is used for sending out an audio alarm to prompt a ship shafting manager that the ship shafting is abnormal in operation;
the source tracing module (6) is used for acquiring an evaluation result of the operation of the evaluation module (4) as a camera module (34) corresponding to the abnormal image data, and determining an abnormal ship shafting component corresponding to the abnormal image data by referring to the installation position of the camera module (34);
the feedback module (7) is used for receiving the abnormal ship shafting component acquired by the operation result of the source tracing module (6) and sending the abnormal ship shafting component to the control terminal (1);
the crankshaft position sensor (31) arranged at the lower stage of the monitoring module (3) synchronously determines abnormal ship shafting component parts through the source tracing module (6) in the running state.
2. The system for intelligently monitoring the state of the marine shafting and intelligently diagnosing the fault as claimed in claim 1, wherein the marine shafting basic parameters collected in the collection module (2) comprise: the ship shafting component life cycle, the ship shafting specification parameters, the ship shafting configuration hull dead weight and load, the whole span of the ship shafting and the running power of the ship shafting.
3. The ship shafting state monitoring and fault intelligent diagnosis system according to claim 1, wherein the monitoring module (3) is provided with sub-modules at a lower level, and the sub-modules comprise:
the crankshaft position sensor (31) is used for monitoring the real-time rotating speed of a ship shafting;
the analysis unit (32) is used for acquiring the ship shafting basic parameters acquired by the operation of the acquisition module (2) and analyzing the mountable position of the camera module (34) by referring to the ship shafting basic parameters;
the selecting unit (33) is used for obtaining the mountable position of the camera module (34) obtained by the operation analysis of the analyzing unit (32), and selecting the mountable position of the camera module (34) for mounting by referring to the ship shafting overall span parameter data in the ship shafting basic parameters;
and the camera module (34) is used for capturing video data of the installation positions of the ship shafting component parts.
4. The ship shafting state monitoring and fault intelligent diagnosis system according to claim 3, wherein the crankshaft position sensor (31) is triggered to operate synchronously with the starting of the ship shafting, the crankshaft position sensor (31) operates to capture the real-time rotating speed of the transmission shaft in the ship shafting in real time, and periodically feeds back the captured real-time rotating speed of the transmission shaft to the control terminal (1) in a periodic manner.
5. The system for monitoring the state of the marine shafting and intelligently diagnosing the fault according to claim 3, wherein a video recording frame number rate of the camera module (34) is adapted to a rotating speed of a transmission shaft of the marine shafting, the camera module (34) captures image data of a transmission shaft and other components of the marine shafting in an initial state of the marine shafting, comparison points are set in the initial image data, and position comparison based on the image frame image data as a reference is performed on the current position of the comparison points and the positions of the comparison points set in the initial image data in a video data frame captured by the camera module (34).
6. The marine shafting state monitoring and fault intelligent diagnosis system according to claim 1, wherein a sub-module is provided at a lower stage of the evaluation module (4), and comprises:
a setting unit (41) for setting a comparison safety threshold value of the comparison point location;
a recording unit (42) for recording the comparison point position difference;
the setting unit (41) judges whether the comparison result is within a comparison safety threshold value after the camera module (34) compares the initial comparison point location with the current comparison point location, and triggers the alarm module (5) to operate if the judgment result is negative.
7. The ship shafting state monitoring and fault intelligent diagnosis system according to claim 6, wherein the recording unit (42) records the comparison point location difference in real time, and transmits the comparison point location difference data to the control terminal (1) when the accumulated comparison point location difference data is not less than 10 k.
8. The ship shafting state monitoring and fault intelligent diagnosis system according to claim 1, wherein a sub-module is arranged inside the alarm module (5), and comprises:
the trigger unit (51) is used for acquiring the control authority of the ship shafting to control the ship shafting to stop running;
wherein, the trigger unit (51) triggers operation according to trigger logic, and the trigger logic is as follows: and the ship shafting management personnel do not control and operate the ship shafting at the control terminal (1) within thirty seconds after the alarm module (5) operates.
9. The system for intelligently monitoring the state of the marine shafting and intelligently diagnosing the faults as claimed in claim 1, wherein the shafting load limiting condition of the overall span of the marine shafting in the basic parameters of the marine shafting in the acquisition module (2) is calculated by the following formula:
Figure QLYQS_1
；
in the formula:
Figure QLYQS_2
allowing the minimum load on a shaft system;
Figure QLYQS_3
dead weight of a left span of a shaft system;
Figure QLYQS_4
dead weight of right span of the shafting;
Figure QLYQS_5
the sum of external loads on two spans of the shafting.
10. The ship shafting state monitoring and fault intelligent diagnosis system according to claim 1, wherein the control terminal (1) is electrically connected with an acquisition module (2) and a monitoring module (3) through a medium, the monitoring module (3) is electrically connected with a crankshaft position sensor (31), an analysis unit (32) and a selection unit (33) through a medium, the analysis unit (32) and the selection unit (33) are electrically connected with a camera module (34) through a medium, the monitoring module (3) is electrically connected with an evaluation module (4) through a medium, the evaluation module (4) is electrically connected with a setting unit (41) and a recording unit (42) through a medium, the recording unit (42) is electrically connected with the control terminal (1) through a medium, the evaluation module (4) is electrically connected with an alarm module (5) through a medium, the alarm module (5) is internally electrically connected with a trigger unit (51) through a medium, and the alarm module (5) is electrically connected with a source tracing module (6) and a feedback module (7) through a medium.
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