JP2002123884A - System for measuring and analyzing vibration of moving body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for measuring and analyzing the vibration of a moving body capable of remotely collecting data on the vibration of the moving body by use of mobile communications, and analyzing the data collected. SOLUTION: Signals can be transferred between a ship I being the moving body and the land II by radio communications via a satellite 9. Vibration sensors 2 for measuring the vibrations of different portions of the ship and a data collecting and analyzing process portion 4 for collecting and analyzing the vibration data sent from the sensors 2 are disposed on the ship I. The process portion 4 is remotely controlled from the land II so that the vibration data collected and analyzed by the process portion 4 are reproduced in a personal computer on the land II in much the same way that the data are collected on the ship.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring vibration of a moving body.
The analysis system is particularly useful for remotely measuring and analyzing vibrations of various parts of a moving body such as a ship by transmitting and receiving signals using a satellite communication, a mobile telephone system or the like. 2. Description of the Related Art It is extremely important for anti-vibration measures to quickly grasp the vibration phenomenon and vibration level of a ship, accurately judge whether vibration countermeasures are necessary or not, and reflect the results immediately on an actual ship. . For this reason, conventionally, in order to measure and analyze a predetermined vibration phenomenon at the time of test operation of a ship, at the time of test operation of the ship, a device for measurement and analysis is mounted on the ship, and a measurement crew is on board,
The measurer conducts a sea test for performing predetermined measurement and analysis on the ship. In addition to this test run, long-term measurement data corresponding to driving and operating conditions (engine speed, load status, etc.) including during service, is collected in real time, and the vibration phenomenon trends are grasped in detail. It is also important. Therefore, in order to collect such long-term measurement data, during the service period of the ship, a measurement staff board the ship and collect and analyze predetermined measurement data. [0003] The work of measuring and analyzing vibration data as described above requires a large amount of cost especially when the ship is in service. This is because labor costs associated with holding the worker performing the measurement and analysis on board for a long period of time increase. Incidentally, one voyage often lasts several months. For this reason, it is difficult to perform sufficient measurement and analysis of the vibration data during operation of the ship. In addition, the vibration trouble basically requires only the measurer to judge and deal with it alone. For this reason, it may be difficult to determine an appropriate anti-vibration measure in a short time. SUMMARY OF THE INVENTION In view of the above prior art, the present invention uses a mobile communication to collect vibration data of a mobile body remotely and to analyze the collected data. The purpose is to provide a system. [0005] The structure of the present invention that achieves the above object has the following features. [0006] 1) A plurality of vibration detection sensors dispersed and arranged at each part of the moving body so as to measure the vibration of each part of the moving body, and each vibration on the moving body based on a control signal wirelessly transmitted from the land side. Data collection / analysis processing means for collecting vibration data from the detection sensor and performing predetermined analysis processing of the collected vibration data, and receiving the control signal on a moving body and transmitting the control signal to the data collection / analysis processing means Mobile-side wireless transmission / reception means for wirelessly transmitting vibration data transmitted from the data collection / analysis processing means to the land side,
Land-side wireless transmission / reception means for receiving vibration data transmitted via the mobile-side wireless transmission / reception means and transmitting the control signal to the mobile body side, and reproducing the vibration data received by the land-side wireless transmission / reception means on the land side And display / control means for transmitting the control signal to the land-side wireless transmission / reception means on the land side. 2) In the vibration measurement / analysis system for a moving object described in 1) above, the moving object is a ship. 3) In the vibration measurement / analysis system for a moving object described in 1) above, the moving object is any one of a flying object flying in the air and a vehicle traveling on land. 4) In the vibration measurement / analysis system for a moving object according to any one of the above 1) to 3), the transmission and reception of signals between the mobile-side wireless transmitting / receiving means and the land-side wireless transmitting / receiving means are performed by satellite To do via communication. [0010] 5) In the vibration measurement / analysis system for a moving object according to any one of the above 1) to 3), transmission and reception of signals between the moving object and the land side are performed using a mobile telephone system. . 6) In the vibration measurement / analysis system for a moving object according to any one of the above 1) to 5), the data collection / analysis processing unit includes a hammering test, an anchor test, a rotation speed increase tracking test, and the like. And a plurality of types of programs storing predetermined processing procedures corresponding to various vibration tests, and the control signal transmitted by the display / control means includes an activation signal for activating the program. 7) In the vibration measurement / analysis system for a moving object according to any one of the above 1) to 6), the display / control means automatically controls the control signal of the data collection / analysis processing unit in a predetermined procedure. Must be sent in a targeted manner. 8) In the vibration measurement / analysis system for a moving object according to any one of the above 1) to 7), the data collection / analysis processing means on the moving object side and the display / control means on the land side are personal computers. The vibration data of the same content as the land-side personal computer is also displayed on the screen of the personal computer on the mobile side, and the measurement staff operating the personal computer on the land side collects and analyzes the vibration data as if it were inside the mobile body It is configured to do the same work as it does. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view conceptually showing a ship to be measured in the present embodiment. As shown in FIG. 1, vibration detection sensors 2 are arranged at various places on the hull of the ship 1, and each vibration detection sensor 2 is connected to a data collection / analysis processing unit 4 via a cable 3. The data collection / analysis processing unit 4 collects vibration data detected by each vibration detection sensor 2 by starting a predetermined analysis program and performs a predetermined analysis process (specific contents will be described later in detail). . Vibration data representing such analysis results is:
The signal is transmitted to the land side (not shown) via the antenna 5 and the satellite. At the same time, a control signal and the like transmitted from the land side to remotely control the start of the analysis program and the like are received via the satellite and the antenna 5. That is, necessary data can be exchanged between the ship side and the land side (base station) by wireless communication. FIG. 2 is a block diagram showing a vibration measurement / analysis system for a moving object according to the present embodiment. As shown in the figure, a personal computer (hereinafter, referred to as a personal computer) 6, a modem 7, a vibration sensor 2, a data collection / analysis processing unit 4, and an antenna 5, as described above, are provided on the ship side I.
And a transmission / reception unit 8. The data collection / analysis processing unit 4 collects the vibration data transmitted from each vibration sensor 2 as described above, and performs a data analysis process by starting a predetermined analysis program. As the analysis program in this case, a tracking analysis program, an order ratio analysis program, a hammering data analysis program, a frequency analysis program, and the like can be considered. Here, tracking analysis means changing the number of revolutions of the engine (propeller),
The vibration component of the hull at each rotation speed includes N
(N is a natural number) This is to analyze how much the higher harmonic component is included. The order ratio analysis is to analyze how many times the vibration component of the engine (propeller) rotational speed has an outstanding amplitude. In the hammering data analysis, an impulse-like impact is applied to the hull, and the vibration measured at this time is analyzed. The frequency analysis is to analyze the amplitude of each frequency component of the measured vibration. There is no particular limitation on the analysis program in this case as long as it is a program related to vibration analysis. Various vibration analysis programs may be created as needed. In the present embodiment, the modem 7, the transmitting / receiving unit 8
And the antenna 5 constitute a mobile body side wireless transmission / reception means. Further, the wireless communication between the ship side I and the land side II in this embodiment is realized using a satellite communication system.
That is, the antenna 5 on the ship side I and the land side via the satellite 9
A predetermined radio wave is transmitted and received between the antenna of the satellite base station 10 of II. A satellite base station 10 is connected via a public line 11 to a modem 12 and a personal computer (hereinafter referred to as a personal computer) 13 which are devices of the land side II base station. Here, the satellite base station 10 is provided with a transmission / reception unit corresponding to the transmission / reception unit 8 on the ship side I, and constitutes a land-side wireless transmission / reception unit together with the public line 11 and the modem 12. The display / control means for reproducing the vibration data received by the land-side wireless transmitting / receiving means on the land side and transmitting a predetermined control signal to the land-side wireless transmitting / receiving means on the land side is the personal computer 13. In this embodiment, the measuring person is the land side II.
A predetermined control signal is wirelessly transmitted to the ship side I by operating the personal computer 13. In the data collection / analysis processing unit 4 of the ship side I that has received the control signal, an analysis program corresponding to the control signal is started to collect and analyze predetermined vibration data, and the land side II represented by the control signal is analyzed. The required vibration data is wirelessly transmitted to the land side II upon request.
Thus, through bidirectional communication between the land side II and the ship side I, the necessary vibration data is obtained by operating the vibration data collection / analysis processing unit 4 from the remote land side II, and the contents are transferred to the personal computer 13 of the land side II. Display on the screen. At this time, the same vibration data as the personal computer 13 is also displayed on the screen of the personal computer 6 on the ship side I. Thus, the measurement operator operating the personal computer 13 on the land side II can perform the same operation as if he were on the boat 1 and collected and analyzed the vibration data. Here, there is no particular limitation on the content of the control signal transmitted from the land side II to the ship side I. In the above embodiment,
Although the start signal of the analysis program of the data collection / analysis processing unit 4 is included, it is not essential to use a signal having such contents. For example, a content requesting specific vibration data at a specific position of the ship 1, a content requesting extraction / designation of an analysis parameter (for example, a content requesting only tracking data), a content requesting vibration data for a specific period. For example, the signal may represent various necessary control contents. The point is that the content should be such that desired vibration data can be obtained in accordance with the configuration of the data collection / analysis processing unit 4. For example, when the data collection / analysis processing unit 4 has a built-in automatic measurement program, the signal may include a process of changing a parameter of the automatic measurement program. Further, the control content of the land side II can be formed as a measurement program of the personal computer 13. When the measurement program is formed in this way, the personal computer 13 automatically collects and analyzes predetermined vibration data and displays the vibration data on the display screen without waiting for the operator's instruction. A specific example of the vibration data obtained on the screen of the personal computer 13 on the land side II in the vibration measuring / analyzing system of the moving body according to the present embodiment as described above will be described. The graphs shown in FIGS. 3 to 5 are examples. FIG. 3 is a graph showing frequency characteristics of the anchor test of the ship 1. The anchor test is to excite the hull by anchoring the anchor, and to analyze the frequency of the vibration at each position of the hull at this time. The horizontal axis in FIG. 3 is frequency (cycles / minute), the vertical axis is amplitude (gal), and (a) to (d) are different from each other.
This indicates that the data is for a location. FIG. 4 is a graph showing the result of the tracking analysis of the speed increase of the boat 1. In the case of Vessel 1,
Since the engine is operated in the range of 40 rpm to 110 rpm, the horizontal axis indicates the engine speed (rpm) and the corresponding amplitude is plotted on the vertical axis. Here, (a) is a frequency three times as high as each rotation speed (third order).
Component amplitude, (b) is six times the frequency of each rotation (sixth order)
Component amplitude, (c) is 9 times the frequency of each rotation (9th order)
The amplitude of the component (d) is a frequency (12
Next, the amplitudes of the components are shown. That is, the engine can be a vibration source of the ship 1, and is used for diagnosis of which order vibration component is dominant among vibrations generated by the vibration source. This graph can be a material that contributes to the formulation of, for example, anti-vibration measures. FIG. 5 is a graph showing the frequency of occurrence of each amplitude in the vibration test of the ship 1. FIGS. 7A to 7C show measurement signals such as amplitude on the horizontal axis and the frequency of appearance (number of data) on the vertical axis, and show measurement data at three different positions. . With this graph,
It is possible to know how many measurement components appear at what frequency, and thereby it is possible to estimate the degree of fatigue due to repeated vibration of a specific position of the hull due to vibration. In the above embodiment, the object to be measured is a ship, but the object to be measured in this case is not limited to this. When applied to a mobile object, vibration data of the mobile object can be collected and analyzed well at a remote fixed station. In this case, other moving bodies include an airplane, a rocket, a helicopter, and the like, which are flying bodies flying in the air, and a vehicle (including a railroad vehicle) traveling on land. In the above embodiment, the satellite communication system is used for the wireless communication between the ship side I and the land side II, but the present invention is not limited to this. In recent years, any wireless communication system such as a mobile phone system using a communication infrastructure, a mobile phone system such as a satellite phone system, and the like, which are being rapidly constructed, can be applied. Also,
There is no particular limitation on the content of signals transmitted and received between the ship side I and the land side II. In essence, the same work or processing as the measurement crew on board vessel 1 to collect and analyze vibration data is performed on the land side.
It only needs to be able to be performed by remote control in II. As described above in detail with the embodiments, the invention described in [Claim 1] is distributed to each part of the moving body so as to measure the vibration of each part of the moving body. Data collection / collection, which collects vibration data from each of the vibration detection sensors on the moving body based on a control signal wirelessly transmitted from the land side and performs predetermined analysis processing of the collected vibration data. Analysis processing means, and a mobile body radio for receiving the control signal on the mobile body, transmitting the control signal to the data collection / analysis processing means, and wirelessly transmitting vibration data transmitted from the data collection / analysis processing means to the land side. Transmitting / receiving means, land-side wireless transmitting / receiving means for receiving vibration data transmitted via the mobile-side wireless transmitting / receiving means and transmitting the control signal to the mobile side, and land-side wireless transmitting / receiving Since the vibration data received by the communication means is reproduced on the land side and the land side has display / control means for transmitting the control signal to the land side wireless transmission / reception means, the transmission / reception of the signal through a wired line is required. It is possible to collect and analyze the vibration data of a moving object that cannot be operated from a remote land side.
As a result, according to the present invention, desired vibration data can be collected and analyzed on the land side without the need for a measurement person to board the moving object, and the cost associated with the labor costs involved in this measurement can be significantly reduced. Can be reduced. In addition, since vibration data can be obtained on the land side, a large number of skilled workers or technicians can easily participate in the analysis of the contents, etc. ,
Can be done quickly. In particular, this is a remarkable and useful effect when taking measures against abnormal vibration. Further, it is possible to easily construct a system that collects and analyzes each vibration data of a large number of moving bodies at one place and centrally manages the performance of the moving bodies related to vibration. According to a second aspect of the present invention, in the vibration measuring / analyzing system for a moving body according to the first aspect, since the moving body is a ship, the work is performed by an operator boarding the ship. The same vibration data collection and analysis can be performed on land. As a result, according to the present invention, when a worker gets on board and collects and analyzes predetermined vibration data, once a departure is made, a special type of ship has to be restrained for a long time, such as several months. In view of the nature, the vibration data during the navigation can be easily obtained on the land side, so that the cost related to the labor cost can be reduced most remarkably. According to a third aspect of the present invention, in the vibration measuring / analyzing system for a moving object according to the first aspect, the moving object may be a flying object flying in the air or a vehicle traveling on land. Therefore, the same collection and analysis of vibration data as performed by a worker on a flying object or a vehicle can be performed at a fixed land-side base station. As a result, according to the present invention, it is possible to easily and quickly collect and analyze various vibration data of a moving object remotely and at low cost. According to a fourth aspect of the present invention, in the vibration measuring / analyzing system for a moving body according to any one of the first to third aspects, the mobile body side wireless transmission / reception means and the land Since the transmission and reception of signals with the side wireless transmission / reception means are performed via satellite communication, the same effect as the invention of claim 1 can be realized by high-quality two-way communication via communication satellites. . According to a fifth aspect of the present invention, there is provided a vibration measurement / analysis system for a moving body according to any one of the first to third aspects, wherein Since the transmission and reception of signals between the terminals is performed using a mobile telephone system, not only can the mobile telephone system, which has been rapidly enhanced in recent years, be effectively used as a communication infrastructure, but also the system can be used. The desired vibration data can be collected and analyzed by high quality and inexpensive two-way communication. According to a sixth aspect of the present invention, in the vibration measurement / analysis system for a moving object according to any one of the first to fifth aspects, the data collection / analysis processing unit , A hammering test, an anchor test, a rotational speed increase tracking test, etc., and has a plurality of types of programs storing predetermined processing procedures corresponding to various vibration tests. Since it includes a start signal for starting the program, it is possible to collect and analyze desired vibration data by remotely starting the measurement program. As a result, by preparing various measurement programs, desired vibration data can be obtained easily and inexpensively. According to a seventh aspect of the present invention, in the vibration measuring / analyzing system for a moving object according to any one of the first to sixth aspects, the display / control means comprises:
Since the control signal of the data collection / analysis processing unit is automatically transmitted in a predetermined procedure, it is possible to automatically collect and analyze desired vibration data from a remote location,
Since no human intervention is required, the measurement cost is the lowest. The invention described in [8] is a system for measuring and analyzing vibration of a moving object according to any one of [1] to [7]. The processing means and the display / control means on the land side include a personal computer. Vibration data of the same content as the personal computer on the land side is displayed on the screen of the personal computer on the mobile side, and the personal computer on the land side is operated. The measurement crew is configured to perform the same work as collecting and analyzing vibration data inside the moving body. This can be done while looking at the computer screen.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram conceptually showing a ship to be measured in an embodiment of the present invention. FIG. 2 is a diagram illustrating vibration measurement of a moving object according to an embodiment of the present invention.
It is a block diagram showing an analysis system. FIG. 3 is a graph showing frequency characteristics of the anchor test of the ship. FIG. 4 is a graph showing a result of the above-described ship speed increase tracking analysis. FIG. 5 is a graph showing an appearance frequency of a measurement signal such as an amplitude in the ship vibration test. [Description of Signs] I Ship side II Land side 1 Ship 2 Vibration detection sensor 4 Data collection / analysis processing unit 5 Antenna 6 Personal computer 8 Transmission / reception unit 9 Satellite 10 Satellite base station 11 Public line 13 Personal computer

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Mamoru Matsuo             5-717-1 Fukaboricho, Nagasaki City, Nagasaki Prefecture 3             Hisashi Heavy Industries, Ltd. F term (reference) 2F073 AA32 AB01 BB01 BB09 BC02                       CC03 CC07 CC11 DD07 FF01                       FG01 FG02 GG04 GG05 GG09                 2G064 AA14 BA15 CC13

Claims (1)

Claims: 1. A vibration detection sensor dispersed and arranged at each part of a moving body so as to measure the vibration of each part of the moving body, and a control signal wirelessly transmitted from a land side. Data collection that collects vibration data from each vibration detection sensor on the moving object and performs a predetermined analysis process on the collected vibration data
Analysis processing means; and a mobile-side radio for receiving the control signal on a mobile body, transmitting the control signal to the data collection / analysis processing means, and wirelessly transmitting vibration data transmitted from the data collection / analysis processing means to the land side. Transmitting / receiving means, land-side wireless transmitting / receiving means for receiving vibration data transmitted via the mobile-side wireless transmitting / receiving means and transmitting the control signal to the mobile side, and transmitting the vibration data received by the land-side wireless transmitting / receiving means to the land. And a display / control means for reproducing the control signal to the land-side wireless transmission / reception means on the land side and reproducing the control signal on the land side. 2. The vibration measurement and analysis system for a mobile object according to claim 1, wherein the mobile object is a ship. 3. The vibration measuring / analyzing system for a moving object according to claim 1, wherein the moving object is one of a flying object flying in the air and a vehicle traveling on land. Body vibration measurement
Analysis system. 4. A system for measuring and analyzing vibration of a mobile object according to claim 1, wherein a signal between the mobile-side wireless transmission / reception means and the land-side wireless transmission / reception means is provided. Is a system for measuring and analyzing vibrations of a mobile object, which is performed via satellite communication. 5. A mobile phone vibration measurement / analysis system according to any one of claims 1 to 3, wherein transmission and reception of signals between the mobile body and the land side are performed by a mobile telephone system. A vibration measurement and analysis system for a moving object, characterized in that the vibration measurement and analysis are performed by using a computer. 6. The vibration measurement / analysis system for a moving object according to claim 1, wherein the data collection / analysis processing unit includes a hammering test, an anchor test, a rotation test, It has a plurality of programs storing predetermined processing procedures corresponding to various vibration tests, such as a number rise tracking test, and the control signal transmitted by the display / control means includes a start signal for starting the program. A vibration measurement and analysis system for a moving object, characterized in that: 7. The vibration measuring / analyzing system for a moving object according to any one of claims 1 to 6, wherein the display / control means transmits a control signal of the data collection / analysis processing unit. A vibration measurement / analysis system for a moving object, wherein the vibration is automatically transmitted according to a predetermined procedure. 8. The vibration measurement / analysis system for a moving object according to any one of claims 1 to 7, wherein the data collection / analysis processing means on the moving object side and the display / display on the land side are provided.
The control means includes a personal computer. Vibration data of the same content as that of the land-side personal computer is also displayed on the screen of the personal computer on the moving body side, so that a measuring person operating the land-side personal computer is as if in the moving body. A vibration measurement / analysis system for a moving body, characterized in that the same operation as collecting and analyzing vibration data can be performed.