Fault positioning method for ship

Abstract

The invention relates to the technical field of ship fault positioning, in particular to a ship fault positioning method, which comprises the following steps of: equidistantly mounting two rows of vibration sensors around the surface of a ship, sensing ship operation vibration signals based on the vibration sensors, and recording the sensed ship operation vibration signals; according to the method, a plurality of groups of vibration sensors are deployed on the ship body to sense the ship body vibration signals, fault positioning and sniffing conditions are provided for the ship, and in the stage of sensing the ship body vibration signals, the ship body vibration signals can be sensed, so that the ship body vibration signals can be sensed. According to the method, the characteristic vibration signals are synchronously extracted from the vibration signals, so that the ship operation vibration signals are segmented on the basis of the extracted characteristic vibration signals, and finally fault judgment and fault sniffing are performed on the ship on the basis of the segmented ship vibration signals. The predictability is better, the real-time performance is better, and the demand degree for the operation state parameters of the equipment on the ship is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of ship fault location, and in particular to a ship fault location method. Background Art

[0002] There are many types of ship failures. Main engine failure will cause power loss and affect navigation; steering gear failure will cause ship control failure and difficulty in steering; electrical system failure may cause power outages and affect equipment operation; hull leakage may cause water ingress. If any of these failures are not handled in time, they may trigger a chain reaction in a complex marine environment, endangering the safety of the ship and the lives of personnel.

[0003] The invention patent with application number 202410044643.X discloses a fault monitoring and early warning device for a ship refrigeration device and an early warning method thereof, comprising a monitor body, a storage slot is provided through the top of the monitor body, and the storage slot is in a "U"-shaped structure, and two groups of slots are provided on the top of the monitor body, and the storage slot is located in the middle of the two groups of slots; connecting rods are slidably placed inside the two groups of slots, and connecting plates are installed at the ends of the two groups of connecting rods close to each other, and a ship fault scanner is installed on the surfaces of the two groups of connecting plates close to each other, and the ship fault scanner is used to collect temperature information, pressure information, flow information, sound information, humidity information and electrical information of the ship refrigeration device, and a spectrum device, a data collector and a central processing unit are installed on the bottom wall of the monitor body, and the central processing unit is located in the middle of the spectrum device and the data collector.

[0004] The application aims to solve the problem that "the existing technology monitors the performance status of the drilling machine based on historical operation data and status data, so as to improve the accuracy of monitoring and early warning, but does not take into account the problem that the existing fault monitoring and early warning devices have a relatively single monitoring method; improves the efficiency of monitoring through classified supervision, but does not take into account that the existing fault monitoring and early warning devices are not convenient to adjust the monitoring angle according to needs during monitoring, and have poor flexibility; mainly considers how to improve the sensitivity of detection, but does not take into account the problem that the existing fault monitoring and early warning devices themselves have poor moisture-proof effect; mainly considers how to improve the protection of the monitoring and early warning device, but does not take into account that the existing fault monitoring and early warning devices are not convenient to detect their own faults and have poor practicality."

[0005] However, the current monitoring and positioning of ship faults are mostly based on the ship's own operating status parameters as the main reference data, and the monitoring effect is more targeted, but this also leads to certain deficiencies in the overall fault monitoring and positioning effect of the ship itself.

[0006] Therefore, a fault location method for ships is proposed. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a fault location method for a ship, which solves the technical problems raised in the above-mentioned background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A fault location method for a ship, comprising:

[0010] Two rows of vibration sensors are installed equidistantly around the surface of the ship, and the ship operation vibration signals are sensed based on the vibration sensors, and the sensed ship operation vibration signals are recorded; the ship operation vibration signals are acquired, and characteristic vibration signals are captured in the ship operation vibration signals, and the ship operation vibration signals are segmented with the characteristic vibration signals as segmentation objects; the ship operation vibration signals after the segmentation processing are acquired, and the safety of the ship operation status is evaluated based on the ship operation vibration signals; when the result of the ship operation status safety assessment is that the ship operation status is unsafe, the ship risk components are sniffed based on the ship operation vibration signals; the sniffed ship risk components are acquired, and the ship risk components are fed back to the user end.

[0011] Furthermore, when installing vibration sensors on the surface of a ship, the installation spacing of the vibration sensors is customized by the user, and the higher the requirement for ship fault location accuracy, the smaller the installation spacing of the vibration sensors, and vice versa, the larger the installation spacing of the vibration sensors;

[0012] The installation spacing of the vibration sensor is subject to:

[0013] The height of each running component on the ship is obtained based on the bottom surface of the ship as a reference surface, and the distance between the maximum value and the minimum value of the obtained height is determined, and the distance is divided into four equal parts. The proximity of the distances of the two groups of equal parts with the longest distance is the installation position of the vibration sensor, and the two rows of vibration sensors installed on the surface of the ship are parallel to each other;

[0014] Among them, the distance between the maximum and minimum height values ​​is represented by a line segment. Each group of vibration sensors is numbered. When the ship operation vibration signal is recorded, it is marked based on the number of the vibration sensor from which the ship operation vibration signal comes, and the ship operation vibration signal is distinguished and recorded based on the marked number at the same time.

[0015] Furthermore, the ship operation vibration signal is the ship operation vibration spectrum, and the capture operation of the characteristic vibration signal in the ship operation vibration signal is expressed as:

[0016] Set an amplitude capture threshold, capture corresponding points of matching amplitudes in the vibration spectrum based on the amplitude capture threshold, set a capture window and a window widening ratio, take each capture point as the center line, capture the window where the center line is located in the vibration spectrum, calculate the comprehensive similarity of each group of windows, and after completing the calculation of the comprehensive similarity of each window, widen the window applied in the last calculation of the comprehensive similarity based on the window widening ratio, and perform the calculation of the comprehensive similarity of each group of windows again, and so on, to obtain a queue of comprehensive similarity calculation results, identify the growth and attenuation of the comprehensive similarity calculation results in the queue of comprehensive similarity calculation results, and record the frequency band in the vibration spectrum under the corresponding window of the previous group of comprehensive similarity calculation results in which the comprehensive similarity calculation results are first identified to be in an attenuated state as a characteristic vibration signal;

[0017] Among them, the amplitude capture threshold is customized by the user end, and the maximum value of the amplitude capture threshold is the maximum value in the vibration spectrum. The capture window is customized by the user end, and the first capture window contains no less than three amplitudes. The window widening ratio is 1, 2, 3, 4,... When the window widening ratio is 1, the capture window applied last time is used as the widening target, and one more amplitude is included on the left and right sides of the capture window applied last time to form a new capture window.

[0018] Furthermore, the similarity of the capture window is the similarity of the frequency band in the window, and the similarity calculation logic of the capture window is expressed as:

[0019]

[0020] Where: SIMM is the comprehensive similarity of the capture window; n is the total number of capture windows; sim(i,i+1) is the similarity between the i-th capture window and the i+1-th capture window; m is the set of midpoints in the window; ij, (i+1) j is the amplitude represented by the jth point in the i-th capture window and the i+1-th capture window; f(i) j 、f(i+1) j is the frequency value represented by the jth point in the i-th capture window and the i+1-th capture window; γ is the correction index;

[0021] in, Express The correction index γ is taken as 1 or -1. If the numerator of the fraction where the correction index γ is located is less than or equal to the denominator, the correction index γ is 1. Otherwise, the correction index γ is -1.

[0022] Furthermore, the ship operation vibration signal that has completed the segmentation process is a ship operation vibration signal that does not include a characteristic vibration signal;

[0023] The ship operation vibration signal obtained after the segmentation process is completed is synchronously iterated into the recorded ship operation vibration signal, so that the originally recorded ship operation vibration signal is iterated by the corresponding ship operation vibration signal after the segmentation process.

[0024] Furthermore, the vibration sensor installed on the surface of the ship is continuously operated by a user-defined operation cycle, and the safety assessment logic of the ship operation status is expressed as:

[0025]

[0026] Where: is the safety value of the ship's operating status based on the perception of the ship's operating vibration signal in a single operating cycle; N is the total number of vibration sensors; u q is the set of midpoints of the vibration spectrum corresponding to the ship operation vibration signal sensed by the qth vibration sensor; p v 、p v+1 is the corresponding amplitude of the vth point and the v+1th point; is the latest four obtained safety values ​​of ship operation status;

[0027] Among them, based on formula (1) in the above formula, the safety value of the ship operation status perceived by the ship operation vibration signal in each operation cycle is obtained, and further based on formula (2) and formula (3), the safety of the ship operation status is evaluated. If any one of formulas (2) and (3) is established, it means that the ship operation status is safe.

[0028] Furthermore, the logic of sniffing the risk components of ship operation is expressed as:

[0029] S1: According to the ship operation status safety assessment logic, equation (1) is used to obtain the corresponding value;

[0030] S2: Set the abnormality judgment threshold and apply the corresponding The value is compared with the abnormal judgment threshold, and the The vibration sensor corresponding to the value is obtained;

[0031] S3: The component on the ship that is closest to the installation position of the vibration sensor on the surface of the ship is taken as the sniffing result of the ship risk component.

[0032] Furthermore, when there are adjacent vibration sensors in the vibration sensors obtained in S2, the corresponding A group of vibration sensors with the largest values ​​are retained as targets, and the remaining adjacent vibration sensors are discarded, thereby reducing the number of vibration sensors obtained in S2.

[0033] Furthermore, when the ship risk component completes the sniffing and feeds back to the user end, it simultaneously obtains the position information of the vibration sensor that is the sniffing source of the ship risk component, obtains the position information of the corresponding ship risk component based on the vibration sensor position information as a reference, and uses the position information of the ship risk component as feedback content to feed back the ship risk component to the user end.

[0034] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0035] The present invention provides a fault location method for a ship. During the execution of the method, multiple groups of vibration sensors are deployed on the hull to sense the hull vibration signal, thereby providing fault location sniffing conditions for the ship. In the stage of sensing the hull vibration signal, characteristic vibration signals are simultaneously extracted from the vibration signal, so that the ship operation vibration signal is segmented based on the extracted characteristic vibration signal, and finally the ship is judged and fault sniffed based on the segmented ship vibration signal. Compared with the prior art, the method has better predictability, better real-time performance, and lower requirements for the operation status parameters of the equipment on the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 The present invention is a flow chart of a fault location method for a ship. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention will be further described below in conjunction with the embodiments.

[0040] Embodiment 1:

[0041] A fault location method for a ship in this embodiment is as follows: Figure 1 As shown, including:

[0042] Two rows of vibration sensors are installed around the surface of the ship at equal intervals, and the vibration sensors sense the vibration signals of the ship operation and record the sensed vibration signals of the ship operation;

[0043] Acquire the ship operation vibration signal, perform the capture of the characteristic vibration signal in the ship operation vibration signal, take the characteristic vibration signal as the segmentation object, and perform segmentation processing on the ship operation vibration signal;

[0044] The ship operation vibration signal is the ship operation vibration spectrum. The capture operation of the characteristic vibration signal in the ship operation vibration signal is expressed as:

[0045] Set an amplitude capture threshold, capture corresponding points of matching amplitudes in the vibration spectrum based on the amplitude capture threshold, set a capture window and a window widening ratio, take each capture point as the center line, capture the window where the center line is located in the vibration spectrum, calculate the comprehensive similarity of each group of windows, and after completing the calculation of the comprehensive similarity of each window, widen the window applied in the last calculation of the comprehensive similarity based on the window widening ratio, and perform the calculation of the comprehensive similarity of each group of windows again, and so on, to obtain a queue of comprehensive similarity calculation results, identify the growth and attenuation of the comprehensive similarity calculation results in the queue of comprehensive similarity calculation results, and record the frequency band in the vibration spectrum under the corresponding window of the previous group of comprehensive similarity calculation results in which the comprehensive similarity calculation results are first identified to be in an attenuated state as a characteristic vibration signal;

[0046] The amplitude capture threshold is customized by the user, and the maximum value of the amplitude capture threshold is the maximum value in the vibration spectrum. The capture window is customized by the user, and the first capture window contains no less than three amplitudes. The window widening ratio is 1, 2, 3, 4, ... When the window widening ratio is 1, the capture window applied last time is used as the widening target, and one more amplitude is included on both sides of the capture window applied last time to form a new capture window.

[0047] The similarity of the capture window is the similarity of the frequency band in the window. The similarity calculation logic of the capture window is expressed as:

[0048]

[0049] Where: SIMM is the comprehensive similarity of the capture window; n is the total number of capture windows; sim(i,i+1) is the similarity between the i-th capture window and the i+1-th capture window; m is the set of midpoints in the window; ij, (i+1) j is the amplitude represented by the jth point in the i-th capture window and the i+1-th capture window; f(i) j 、f(i+1) jis the frequency value represented by the jth point in the i-th capture window and the i+1-th capture window; γ is the correction index;

[0050] in, Express The correction index γ takes the value of 1 or -1. If the numerator of the fraction where the correction index γ is located is less than or equal to the denominator, the correction index γ takes the value of 1. Otherwise, the correction index γ takes the value of -1.

[0051] The similarity of the capture window is calculated through the above logical formula, thereby providing the necessary data support for capturing the characteristic vibration spectrum.

[0052] Acquire the ship operation vibration signal after segmentation processing, and evaluate the safety of the ship operation state based on the ship operation vibration signal;

[0053] The vibration sensors installed on the surface of the ship are continuously operated by the user-defined operation cycle. The safety assessment logic of the ship's operating status is expressed as follows:

[0054]

[0055] Where: is the safety value of the ship's operating status based on the perception of the ship's operating vibration signal in a single operating cycle; N is the total number of vibration sensors; u q is the set of midpoints of the vibration spectrum corresponding to the ship operation vibration signal sensed by the qth vibration sensor; p v 、p v+1 is the corresponding amplitude of the vth point and the v+1th point; is the latest four obtained safety values ​​of ship operation status;

[0056] Among them, based on the above formula (1), the safety value of the ship operation state perceived by the ship operation vibration signal in each operation cycle is obtained, and the safety of the ship operation state is further evaluated based on formula (2) and formula (3). If any one of the formulas (2) and (3) is established, it means that the ship operation state is safe;

[0057] Through the above logic formula, the assessment of the safety of the ship's operating status is further limited to ensure that the method can stably assess the safety of the ship's operating status, thereby providing decision-making and operational support for subsequent ship fault location.

[0058] When the result of the ship operation safety assessment is that the ship operation is unsafe, the risk components of the ship are detected based on the ship operation vibration signal;

[0059] The logic of sniffing the risk components of ship operation is expressed as:

[0060] S1: According to the ship operation status safety assessment logic, equation (1) is used to obtain the corresponding value;

[0061] S2: Set the abnormality judgment threshold and apply the corresponding The value is compared with the abnormal judgment threshold, and the The vibration sensor corresponding to the value is obtained;

[0062] S3: taking the component on the ship closest to the installation position of the vibration sensor on the ship surface as the sniffing result of the ship risk component;

[0063] When there are adjacent vibration sensors among the vibration sensors obtained in S2, the corresponding A group of vibration sensors with the largest values ​​are retained as targets, and the remaining adjacent vibration sensors are discarded, thereby reducing the number of vibration sensors obtained in S2;

[0064] Obtain the detected ship risk components and feed back the ship risk components to the user end;

[0065] When the ship risk component completes the sniffing and feeds back to the user end, it simultaneously obtains the location information of the vibration sensor that is the sniffing source of the ship risk component, and obtains the location information of the corresponding ship risk component based on the vibration sensor location information. The location information of the ship risk component is used as the feedback content to feed back the ship risk component to the user end.

[0066] In this embodiment, through the execution of the method in the above embodiment, a real-time, more predictive technology that integrates fault monitoring, judgment, sniffing and positioning and does not rely on the operating status parameters of ship components is provided to the ship, providing a maintenance effect for the long-term and stable operation of the ship.

[0067] Embodiment 2:

[0068] In terms of specific implementation, based on Example 1, this example refers to Figure 1 A fault location method for a ship in Example 1 is further described in detail:

[0069] When installing vibration sensors on the surface of a ship, the installation spacing of the vibration sensors is customized by the user and is subject to the requirement that the higher the accuracy of ship fault location, the smaller the installation spacing of the vibration sensors, and vice versa.

[0070] The installation spacing of vibration sensors complies with:

[0071] The height of each running component on the ship is obtained based on the bottom surface of the ship as a reference surface, and the distance between the maximum and minimum values ​​of the obtained height is determined. The distance is divided into four equal parts, and the proximity of the two groups of equally divided distances with the longest distance is the installation position of the vibration sensor. The two rows of vibration sensors installed on the surface of the ship are parallel to each other;

[0072] The distance between the maximum value and the minimum value of the height is represented by a line segment. Each group of vibration sensors is numbered. When the ship operation vibration signal is recorded, it is marked based on the number of the vibration sensor from which the ship operation vibration signal comes, and the ship operation vibration signal is distinguished and recorded based on the marked number at the same time.

[0073] The ship operation vibration signal that has completed the segmentation processing is the ship operation vibration signal that does not contain the characteristic vibration signal;

[0074] The ship operation vibration signal obtained after the segmentation processing is completed is synchronously iterated to the recorded ship operation vibration signal, so that the original recorded ship operation vibration signal is iterated by the corresponding ship operation vibration signal after the segmentation processing.

[0075] In this embodiment, through the above settings, further execution data support is provided for the execution of the method in Example 1, ensuring the stable execution of the method in Example 1 and providing continuous and stable fault monitoring and positioning services for ships.

[0076] In summary, during the execution of the method in the above embodiment, multiple groups of vibration sensors are deployed on the hull to sense the hull vibration signal, so as to provide fault location and sniffing conditions for the ship, and in the stage of sensing the hull vibration signal, the characteristic vibration signal of the vibration signal is simultaneously extracted, so as to segment the ship operation vibration signal based on the extracted characteristic vibration signal, and finally, based on the segmented ship vibration signal, fault judgment and fault sniffing are performed on the ship. Compared with the existing technology, it has better predictability, better real-time performance, and lower demand for operating status parameters of equipment on the ship.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fault location method for a ship, characterized in that: include: Two rows of vibration sensors are installed around the surface of the ship at equal intervals, and the vibration sensors sense the vibration signals of the ship operation and record the sensed vibration signals of the ship operation; Acquire the ship operation vibration signal, perform the capture of the characteristic vibration signal in the ship operation vibration signal, take the characteristic vibration signal as the segmentation object, and perform segmentation processing on the ship operation vibration signal; Acquire the ship operation vibration signal after segmentation processing, and evaluate the safety of the ship operation state based on the ship operation vibration signal; When the result of the ship operation safety assessment is that the ship operation is unsafe, the risk components of the ship are detected based on the ship operation vibration signal; Obtain the sniffed ship risk components and feed back the ship risk components to the user end.

2. A fault location method for a ship according to claim 1, characterized in that: When installing vibration sensors on the surface of a ship, the installation spacing of the vibration sensors is customized by the user and is subject to the requirement that the higher the accuracy of ship fault location, the smaller the installation spacing of the vibration sensors, and vice versa. The installation spacing of the vibration sensor is subject to: The height of each running component on the ship is obtained based on the bottom surface of the ship as a reference surface, and the distance between the maximum value and the minimum value of the obtained height is determined, and the distance is divided into four equal parts. The proximity of the distances of the two groups of equal parts with the longest distance is the installation position of the vibration sensor, and the two rows of vibration sensors installed on the surface of the ship are parallel to each other; Among them, the distance between the maximum and minimum height values ​​is represented by a line segment. Each group of vibration sensors is numbered. When the ship operation vibration signal is recorded, it is marked based on the number of the vibration sensor from which the ship operation vibration signal comes, and the ship operation vibration signal is distinguished and recorded based on the marked number at the same time.

3. A fault location method for a ship according to claim 1, characterized in that: The ship operation vibration signal is the ship operation vibration spectrum, and the capture operation of the characteristic vibration signal in the ship operation vibration signal is expressed as: Set an amplitude capture threshold, capture corresponding points of matching amplitudes in the vibration spectrum based on the amplitude capture threshold, set a capture window and a window widening ratio, take each capture point as the center line, capture the window where the center line is located in the vibration spectrum, calculate the comprehensive similarity of each group of windows, and after completing the calculation of the comprehensive similarity of each window, widen the window applied in the last calculation of the comprehensive similarity based on the window widening ratio, and perform the calculation of the comprehensive similarity of each group of windows again, and so on, to obtain a queue of comprehensive similarity calculation results, identify the growth and attenuation of the comprehensive similarity calculation results in the queue of comprehensive similarity calculation results, and record the frequency band in the vibration spectrum under the corresponding window of the previous group of comprehensive similarity calculation results in which the comprehensive similarity calculation results are first identified to be in an attenuated state as a characteristic vibration signal; Among them, the amplitude capture threshold is customized by the user end, and the maximum value of the amplitude capture threshold is the maximum value in the vibration spectrum. The capture window is customized by the user end, and the first capture window contains no less than three amplitudes. The window widening ratio is 1, 2, 3, 4,... When the window widening ratio is 1, the capture window applied last time is used as the widening target, and one more amplitude is included on the left and right sides of the capture window applied last time to form a new capture window.

4. A fault location method for a ship according to claim 1, characterized in that: The similarity of the capture window is the similarity of the frequency band in the window. The similarity calculation logic of the capture window is expressed as: Where: SIMM is the comprehensive similarity of the capture window; n is the total number of capture windows; sim(i,i+1) is the similarity between the i-th capture window and the i+1-th capture window; m is the set of midpoints in the window; ij, (i+1) j is the amplitude represented by the jth point in the i-th capture window and the i+1-th capture window; f(i) j 、f(i+1) j is the frequency value represented by the jth point in the i-th capture window and the i+1-th capture window; γ is the correction index; in, Express The correction index γ is taken as 1 or -1. If the numerator of the fraction where the correction index γ is located is less than or equal to the denominator, the correction index γ is 1. Otherwise, the correction index γ is -1.

5. A fault location method for a ship according to claim 1, characterized in that: The ship operation vibration signal that has completed the segmentation process is the ship operation vibration signal that does not contain the characteristic vibration signal; The ship operation vibration signal obtained after the segmentation process is completed is synchronously iterated into the recorded ship operation vibration signal, so that the originally recorded ship operation vibration signal is iterated by the corresponding ship operation vibration signal after the segmentation process.

6. A fault location method for a ship according to claim 1, characterized in that: The vibration sensor installed on the surface of the ship is continuously operated by a user-defined operation cycle, and the safety assessment logic of the ship operation status is expressed as: Where: is the safety value of the ship's operating status based on the perception of the ship's operating vibration signal in a single operating cycle; N is the total number of vibration sensors; u q is the set of midpoints of the vibration spectrum corresponding to the ship operation vibration signal sensed by the qth vibration sensor; p v 、p v+1 is the corresponding amplitude of the vth point and the v+1th point; is the latest four obtained safety values ​​of ship operation status; Among them, based on formula (1) in the above formula, the safety value of the ship operation status perceived by the ship operation vibration signal in each operation cycle is obtained, and further based on formula (2) and formula (3), the safety of the ship operation status is evaluated. If any one of formulas (2) and (3) is established, it means that the ship operation status is safe.

7. A fault location method for a ship according to claim 1, characterized in that: The logic of sniffing the risk components of ship operation is expressed as: S1: According to the ship operation status safety assessment logic, equation (1) is used to obtain the corresponding value; S2: Set the abnormality judgment threshold and apply the corresponding The value is compared with the abnormal judgment threshold, and the The vibration sensor corresponding to the value is obtained; S3: The component on the ship that is closest to the installation position of the vibration sensor on the surface of the ship is taken as the sniffing result of the ship risk component.

8. A fault location method for a ship according to claim 7, characterized in that: When there are adjacent vibration sensors among the vibration sensors obtained in S2, the corresponding A group of vibration sensors with the largest values ​​are retained as targets, and the remaining adjacent vibration sensors are discarded, thereby reducing the number of vibration sensors obtained in S2.

9. A fault location method for a ship according to claim 1, characterized in that: When the ship risk component completes sniffing and feeds back to the user end, it simultaneously obtains the position information of the vibration sensor that is the sniffing source of the ship risk component, obtains the position information of the corresponding ship risk component based on the vibration sensor position information as a reference, and uses the position information of the ship risk component as feedback content to feed back the ship risk component to the user end.

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