JP2015114224A - Vibration inspection system using portable terminal, and server thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration inspection system using a portable terminal, which uses a vibration sensor having no IC only for calculation and is capable of easily obtaining a speed and displacement in accordance with detection data of a detected vibration acceleration of the vibration sensor, and to provide a server of the system.SOLUTION: A general-purpose portable information terminal unit 2 like a smart phone and a vibration sensor 3 connected to it are used. Detection data detected by the vibration sensor 3 is transmitted from the portable information terminal unit 2 to a server 6, and the server 6 performs data processing and transmits the processing result to the portable information terminal unit 2. The server 6 includes data processing means 4 which processes acceleration data transmitted from the portable information terminal unit 2. The data processing means 4 includes: a speed calculation section 4c for integrating the acceleration data to obtain a speed; and a displacement calculation section 4c for further integrating the speed to obtain displacement. A low frequency component cut section 4a is provided in a preceding stage of the speed calculation section 4c. The calculation result of these speed and displacement is sent back to the portable information terminal unit 2.

Description

  The present invention uses various inspection objects, for example, vibration sensors that do not have a calculation function for vibration speed and displacement of rolling bearings, constant velocity ball joints, and the like, and portable information terminals such as smartphones that are widely used. The present invention relates to a vibration inspection system using a mobile terminal and a server thereof.

  Conventionally, as a method of inspecting rotating machine parts such as bearings, there is a method of measuring vibrations and inspecting abnormalities and the like. As an inspection system based on vibration measurement, a portable information terminal that is widely used is used, and by using a vibration sensor that is input to the portable information terminal, the operating state of rotating machine parts such as bearings can be easily inspected. A proposed system has been proposed. (For example, patent document 1).

In addition, the vibration sensor is a sensor that detects vibration acceleration, but it may be necessary to obtain the vibration speed and displacement due to vibration for abnormality diagnosis and the like. When calculating the speed and displacement of these vibrations, the vibration acceleration detected by the vibration sensor is integrated to determine the speed, and the calculated speed is further integrated to calculate the displacement. The speed and displacement calculated in this way are compared with a threshold value to determine whether or not the rotating machine component is abnormal.
A general vibration sensor does not have a function of calculating speed and displacement, and simply detects vibration acceleration. However, a vibration sensor having a dedicated IC for calculating speed and displacement is also used.

JP2013-228352A

According to the vibration sensor having the dedicated IC, not only vibration acceleration but also speed and displacement can be detected. However, the vibration sensor having the dedicated IC becomes very expensive.
For this reason, a vibration sensor that does not have a dedicated IC for calculation is generally used. In order to obtain the velocity and displacement using such a vibration sensor, the velocity may be obtained by integrating the vibration acceleration detected by the vibration sensor as described above, and the displacement may be calculated by further integrating. However, a means for performing the calculation means is necessary and cannot be immediately known at the measurement site.
In particular, when speed and displacement are calculated from vibration acceleration by integration, since integration is performed including sensor drift, error, and noise, the integration constant is unknown and may diverge. Therefore, an integral value cannot be obtained.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a portable terminal-use vibration inspection system and its server that can use a vibration sensor that does not have a dedicated IC for calculation and can easily determine the speed and displacement from the detected vibration acceleration detection data. That is.

The mobile terminal-use vibration inspection system of the present invention includes a general-purpose mobile information terminal 2 and a vibration sensor that detects vibration of the inspection object 1 and inputs acceleration data, which is detected data, to the mobile information terminal 2. 3 and a server 6 connected to the portable information terminal 2 by a communication line network 7.
The portable information terminal 2 is sent back from the server 6 with respect to the detection data transmitting means 35 for transmitting detection data consisting of acceleration data detected by the vibration sensor 3 to the server 6 and the transmitted detection data. It has processing result display means 36 for displaying the processing result.
The server 6 includes a reception processing unit 13 that receives acceleration data that is detection data transmitted from the portable information terminal 2, a data processing unit 4 that processes the received detection data, and a data processing unit 4 A processing result return means 14 for returning the processing result to the portable information terminal 2;
The data processing means 4 has a speed calculation unit 4b that obtains a speed by integrating acceleration data that is the detection data, and a displacement calculation part 4c that obtains a displacement by integrating the speed obtained by the speed calculation unit 4b.

According to this configuration, the data calculation means 4 provided in the server 6 is integrated with the acceleration data as the detection data to obtain the speed, and the speed calculation part 4b that obtains the speed, and the speed obtained by the speed calculation part 4b is integrated and displaced. The displacement calculation unit 4c for obtaining Therefore, speed and displacement can be obtained using software provided in the server 6 without using a vibration sensor provided with a dedicated IC.
The general-purpose portable information terminal 2 is used as means for reading the detection data of the vibration sensor 3, sending the detection data to the server 6 for processing, and means for displaying the processing result transmitted from the server 6. Therefore, only by preparing the dedicated sensor 3, it is possible to obtain other vibration speeds and displacements by using a portable information terminal 2 such as a smartphone or a tablet that is generally popular.
If the processing result returning means 14 of the server 6 returns the vibration speed and displacement obtained by the data processing means 4 to the portable information terminal 2, the vibration sensor 3 having no calculation dedicated IC is provided. While being used, by connecting the portable information terminal 2, it is possible to know not only the acceleration of vibration but also the speed and displacement at the site of vibration measurement as if using a vibration sensor having a dedicated IC. .

  The general-purpose portable information terminal 2 is a smartphone or a tablet and does not necessarily have a telephone function, but is connected to the server 6 via a wide-area communication line network 7 such as a telephone network or the Internet. This is an information processing device having an OS (operation program) 9 that can download and install an application program. The vibration sensor 3 is, for example, a vibration pickup and is connected to the portable information terminal 2 via a cable 8 having a terminal 8a conforming to a standard such as micro USB (one of USB standards which is a connection interface standard), a wireless LAN, or the like. Is done. In addition, the vibration sensor 3 may be capable of inputting data to the portable information terminal 2 via a removable storage medium such as a memory chip or USB memory.

In the present invention, the data processing means 4 of the server 6 includes a low-frequency component cut unit 4a that cuts a low-frequency component from acceleration data that is the detection data before the speed calculation unit 4b. Also good.
By cutting low frequency components from acceleration data, velocity and displacement can be integrated from acceleration without causing divergence. Therefore, speed and displacement can be calculated reliably.

For example, the low frequency component cut unit 4a performs frequency analysis on the acceleration data that is the detection data, discards the low frequency component from the result of the frequency analysis, and uses the frequency analysis result after the discard as acceleration data based on time axis data. It is set as the structure which performs the process which returns to. Thereby, the low frequency component can be cut reliably and appropriately.
The low frequency component cut unit 4a may be a low cut filter. In this case, the low frequency component cut unit 4a can be simply configured.

In this invention, the data processing means 4 of the server 6 calculates the effective value of velocity from the acceleration obtained by the acceleration effective value calculation unit 4d for calculating the effective value of acceleration from the acceleration data and the velocity calculation unit 4d. It has at least one of a velocity effective value calculation unit 4e and a displacement effective value calculation unit 4f that calculates an effective value of displacement from the displacement obtained by the displacement calculation unit 4c. The portable information terminal 2 uses the effective value calculated by any of the effective value calculation units 4d, 4e, 4f, the velocity calculated by the speed calculation unit 4b, and the displacement calculated by the displacement calculation unit 4c as the processing result. It may be configured to be returned to.
In the case of this configuration, the mobile information terminal 2 connected to the vibration sensor 3 can know the speed of vibration and the speed of displacement, and further, the effective value of acceleration of vibration, the effective value of speed, or the effective value of displacement. Can know. These effective values are data necessary for accurately diagnosing abnormalities of inspection objects such as rotating machine parts, and these various data can be obtained only by using the simple vibration sensor 3 and the portable information terminal 2. Can know.

In the present invention, the inspection object 1 may be a rotating machine part. When determining abnormalities such as rotating machine parts, especially rolling bearings, it is possible to determine abnormalities with higher accuracy by determining not only the vibration acceleration detection data but also the vibration speed and displacement. It leads to. Therefore, the effect by which the speed and displacement of vibration can be easily obtained by the inventive system is more effectively exhibited.
In this specification, “rotary machine part 1” refers to a machine part provided with rolling elements such as a rolling bearing and a constant velocity ball joint.

The mobile terminal use vibration inspection system server 6 of the present invention is a server constituting the mobile terminal use vibration inspection system,
The portable terminal use inspection system includes a general-purpose portable information terminal 2, a vibration sensor 3 that detects vibration of the inspection object and inputs acceleration data that is detected data to the portable information terminal 2, And a server 6 connected to the portable information terminal through a communication network.
The server 6 includes a reception processing unit 13 that receives acceleration data that is detection data transmitted from the portable information terminal 2, a data processing unit 4 that processes the received detection data, and a process of the data processing unit 4. Processing result returning means 14 for returning the result to the portable information terminal 2;
The data processing means 4 includes a low frequency component cut unit 4a that cuts low frequency components from the acceleration data that is the detection data, and a velocity calculation unit 4b that integrates acceleration data after the cut of the low frequency components to obtain a velocity. And a displacement calculation unit 4c that integrates the speed obtained by the speed calculation unit 4b to obtain a displacement.
According to the server 6 having this configuration, the vibration sensor 3 that does not have a dedicated IC for calculation is used as described for the mobile terminal-use vibration inspection system of the present invention, and the speed is simply calculated from the detected vibration acceleration detection data. And displacement can be determined.

The portable terminal-use vibration inspection system of the present invention includes a general-purpose portable information terminal, a vibration sensor that detects vibration of the inspection object and inputs acceleration data as detection data to the portable information terminal, and the portable And a server connected to the information terminal by a communication line network, the portable information terminal includes detection data transmission means for transmitting detection data composed of acceleration data detected by the vibration sensor to the server, and the transmission Processing result display means for displaying the processing result returned from the server with respect to the detection data, the server receiving acceleration data which is detection data transmitted from the portable information terminal; Data processing means for processing the received detection data, and processing results of the data processing means are returned to the portable information terminal. A processing result return means,
The data processing means includes a speed calculation unit that integrates acceleration data that is the detection data to obtain a speed, and a displacement calculation unit that obtains a displacement by integrating the speed obtained by the speed calculation unit. Using a vibration sensor that does not have a dedicated IC, the speed and displacement can be easily obtained from the detected vibration acceleration detection data.

  The server for mobile terminal use vibration inspection system according to the present invention is a server constituting the mobile terminal use vibration inspection system, wherein the mobile terminal use inspection system is configured to detect vibrations of a general-purpose portable information terminal and the inspection object. A vibration sensor that detects and inputs acceleration data, which is detected data, to the portable information terminal, and a server connected to the portable information terminal via a communication network, the server including the portable information terminal Receiving processing means for receiving acceleration data which is detection data transmitted from the apparatus, data processing means for processing the received detection data, and processing result returning means for returning the processing result of the data processing means to the portable information terminal And the data processing means cuts a low frequency component from the acceleration data that is the detection data. Since it has a speed calculator that calculates the speed by integrating the acceleration data after cutting this low frequency component, and a displacement calculator that calculates the displacement by integrating the speed calculated by this speed calculator, a dedicated IC for calculation is provided. Using a vibration sensor that does not have this, the velocity and displacement can be easily obtained from the detected vibration acceleration detection data.

It is explanatory drawing of a conceptual structure which shows the portable terminal utilization vibration test | inspection system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows a mode that a speed | rate, a displacement, an effective value, etc. are calculated | required by the same inspection system. It is a block diagram of a conceptual structure which shows the portable terminal utilization vibration test | inspection system which concerns on other embodiment of this invention.

  A first embodiment of the present invention will be described with reference to FIGS. This portable terminal-use vibration inspection system is a system for inspecting an inspection object 1 such as a rotating machine part, and is a general-purpose portable information terminal 2 and data detected by detecting vibration of the inspection object 1. A vibration sensor 3 for inputting certain acceleration data to the portable information terminal 2 and a server 6 connected to the portable information terminal 2 via a communication network 7 such as the Internet. The inspection object 1 is a machine part provided with rolling elements such as a rolling bearing and a constant velocity ball joint, for example.

  The portable information terminal 2 is a smartphone, a tablet, or the like, and does not necessarily have a telephone function. However, the portable information terminal 2 can be connected to the server 6 via a wide-area communication line network 7 such as a telephone network or the Internet, and The information processing apparatus includes an OS (operation program) 9 that can download and install a program, and a screen display device 21 that displays an image such as a liquid crystal display device. In addition, a smart phone says what provided the telephone function among the definitions of said portable information terminal device 2. FIG. The communication line network 7 is a line network capable of mobile communication.

  This portable information terminal 2 includes detection data transmission means 35 for transmitting detection data consisting of acceleration data detected by the vibration sensor 3 to the server, and processing returned from the server 6 for the transmitted detection data. A processing result display means 36 for displaying the result on the screen display device 21 is provided.

  In FIG. 1, the vibration sensor 3 is a sensor for detecting acceleration of vibration, and includes a sensor body 3a including a vibration pickup and an A / D converter 3b. The acceleration data indicating the vibration waveform of the analog signal detected by the sensor body 3a and outputted as a voltage value is converted into digital data by the A / D converter 3b and taken into the portable information terminal 2. The A / D converter 3b may be provided in the same housing as the sensor body 3a. The vibration sensor 3 is plugged into the portable information terminal 2 by a cable 8 having a terminal 8a that conforms to a standard such as micro USB (one of the USB standards which is a connection interface standard). In addition, the vibration sensor 3 can be connected to the portable information terminal 2 by a wireless LAN or the like, and a removable storage medium (not shown) such as a memory chip or a USB memory can be attached or detached. Thus, there may be one that can give data to the portable information terminal 2 via this storage medium.

  The server 6 includes a reception processing unit 13 that receives acceleration data that is detection data transmitted from the portable information terminal 2, a data processing unit 4 that processes the received detection data, and a processing result of the data processing unit 4. A processing result returning means 14 for returning to the portable information terminal 2 is provided. The data processing means 4 is constituted by data processing software.

  The data processing means 4 includes a speed calculation unit 4b that integrates acceleration data that is the detection data to obtain a speed, and a displacement calculation unit 4c that integrates the speed obtained by the speed calculation unit 4b to obtain a displacement. A low frequency component cut unit 4a that cuts a low frequency component from the acceleration data that is the detection data is provided upstream of the speed calculation unit 4b. Further, the data processing means 4 includes an acceleration effective value calculation unit 4d, a velocity effective value calculation unit 4e, and a displacement effective value calculation unit 4f, and an abnormality of the inspection object 1 is detected in the subsequent stage of the displacement calculation unit 4c. An abnormality diagnosis unit 4g for diagnosis is provided. The abnormality diagnosis unit 4g is not necessarily provided.

For example, the low frequency component cut unit 4a performs frequency analysis on the acceleration data that is the detection data, discards the low frequency component from the result of the frequency analysis, and uses the frequency analysis result after the discard as acceleration data based on time axis data. It is a means for performing processing to return to.
The low frequency component cut unit 4a may be a low cut filter.

The acceleration effective value calculation unit 4d calculates an effective value (also referred to as “RMS (Root Mean Square) value)) of an acceleration vibration waveform from the acceleration data that is the detection data. The acceleration data used for the calculation may be data in the previous stage of the low frequency component cut unit 4a or data in which the low frequency component in the subsequent stage is cut.
The speed effective value calculation unit 4e calculates the effective value of the vibration waveform of the speed calculated by the speed calculation unit 4b. The displacement effective value calculation unit 4f calculates the effective value of the vibration waveform of the displacement calculated by the displacement calculation unit 4c.

  Specifically, the processing result return means 14 returns the speed, displacement, acceleration effective value, effective speed value, and effective displacement value obtained by the data processing means 4 as described above to the portable information terminal 2. To do. When the abnormality diagnosis unit 4g is provided, the diagnosis result is also returned to the portable information terminal 2.

A vibration inspection using the inspection system having this configuration will be described. The vibration sensor 3 is connected to the portable information terminal 3 and the acceleration of the inspection object 1 is measured by the vibration sensor 3. The obtained acceleration detection data is transmitted from the portable information terminal 2 to the server 6.
In the server 6, the received acceleration detection data is processed by the data processing means 4 as shown in FIG. That is, the low frequency component is cut from the acceleration data which is the detection data by the low frequency component cut unit 4a (see FIG. 1). The acceleration data obtained by cutting the low frequency component is integrated to obtain velocity data by integration, and the obtained velocity data is further integrated to obtain displacement data. In this case, since the low-frequency component is cut from the acceleration data, calculation can be performed without causing divergence when integrating the velocity and displacement from the acceleration. Therefore, speed and displacement can be calculated reliably.

  The low frequency component cut unit 4a cuts the low frequency component by using a low cut filter or frequency analysis. However, when the low frequency component cut unit 4a is a low cut filter, the low frequency component cut unit may have a simple configuration. If the frequency analysis is performed on the acceleration data, the low frequency component is discarded from the result of the frequency analysis, and if the processing is performed to return the frequency analysis result after the discarding to the acceleration data based on the time axis data, the low frequency component is cut. Can be done reliably and appropriately.

Thus, according to the inspection system having the above configuration, the server 6 includes the speed calculation unit 4b and the displacement calculation unit 4c that integrates the speed obtained by the speed calculation unit 4b to obtain the displacement. Therefore, speed and displacement can be obtained using software provided in the server 6 without using a vibration sensor provided with a dedicated IC.
The general-purpose portable information terminal 2 is used as means for reading the detection data of the vibration sensor 3, sending the detection data to the server 6 for processing, and means for displaying the processing result transmitted from the server 6. Therefore, only by preparing the dedicated sensor 3, it is possible to obtain other vibration speeds and displacements by using a portable information terminal 2 such as a smartphone or a tablet that is generally popular.

The processing result returning means 14 of the server 6 returns the vibration speed and displacement obtained by the data processing means 4 to the portable information terminal 2, so that the vibration sensor 3 having no dedicated IC for calculation is used. By connecting the portable information terminal 2, it is possible to know not only the acceleration of vibration but also the speed and displacement at the site of vibration measurement as if using a vibration sensor having a dedicated IC.
In this embodiment, in addition to these, the effective value of vibration acceleration, the effective value of vibration speed, and the effective value of vibration displacement are also calculated by the server 6 and transmitted to the portable information terminal 2. Therefore, using the vibration sensor 3 that detects only the acceleration of vibration and the portable information terminal 2, various data used for diagnosis of inspection objects such as rotating machine parts are obtained and used for high-precision abnormality diagnosis. Can do.

  FIG. 3 shows a portable terminal-use vibration inspection system according to another embodiment of the present invention. This embodiment is the same as the items described in the first embodiment except for the items specifically described. In this embodiment, the server 6 includes a communication processing unit 11, a storage unit (not shown) that stores data processing software that constitutes the data processing unit 4, and a storage unit that stores terminal-side processing software 33 ( (Not shown), a database 16 on the specifications of the inspection object 1 such as a bearing, and a processing result storage means 31.

  The communication processing unit 11 includes a communication control unit 12, a reception processing unit 13, a processing result return unit 14, and a charging processing unit 15. The communication control unit 12 is a unit that establishes communication and performs various controls related to communication in response to access from the portable information terminal 2 via the communication line network 7. The reception processing unit 13 causes the data processing unit 4 to perform data processing in response to a data processing request from the portable information terminal 2 and transmits terminal-side processing software 33 to the portable information terminal 2. The processing result return means 14 returns the processing result by the data processing means 4 to the portable information terminal device 2. The charging processing means 15 is a means for charging the processing by the data processing means 4 from the portable information terminal 2. The charging method may be a method of charging for each use of the data processing means 4, a method of charging a rating, or a method of charging for downloading of the terminal-side processing software 33.

The data processing means 4 is the same as that of the first embodiment described with reference to FIG. 1, but in FIG. 3, the respective effective value calculation units are not shown.
The data processing software serving as the data processing means 4 includes a program and data that cause the server 6 to perform data processing for the inspection of the inspection object 1. The program is an application program that is executed on the OS (operation program) of the server 6. The abnormality diagnosis unit 4g of the data processing unit 4 performs, for example, frequency analysis (FFT analysis) of bearing vibration data, and the frequency of each part (for example, inner ring, outer ring, rolling element, cage) of the bearing from the FFT analysis result. The vibration level is detected. This vibration level is detected and compared with a threshold value, and if it exceeds the threshold value, it is determined as abnormal. When the abnormality diagnosis unit 4g determines that there is an abnormality, it displays that there is an abnormality on the screen 21a of the band information terminal 2, and if it is less than the threshold value, it determines that there is no abnormality and displays the indication that there is no abnormality. It has a function of causing the processing to be displayed on the screen 21 a to be performed via the processing result return means 14.

  The abnormality diagnosing unit 5d determines that an abnormality is present when the abnormality is satisfied, even if the abnormality is within the threshold value, when the condition determined by the comparison of the processing results with time is satisfied. You may make it display on the screen 21a of the information terminal device 2. FIG.

  The database 16 includes a database management system (not shown) that can be searched by access from the portable information terminal 2 and a data storage unit. As the search item 16b, when the inspection object 1 is a bearing, the bearing is selected. It has names classified hierarchically. Search item 16b is classified into ball bearings and bearings, ball bearings are classified into deep groove ball bearings, angular contact ball bearings, and other types of bearings, and roller bearings, tapered roller bearings and cylindrical roller bearings, etc. It is divided into the hierarchy classified into each type of bearing, the hierarchy classified according to size, the presence or absence of seals, and the hierarchy classified into seal types. The search item 16b may have a plurality of types of hierarchies having different types of sections. The specification data 16a for one model number as the lowest layer is provided as a file. The database 16 can extract a plurality of specification data 16a as folders of various levels.

  The specification data 16a includes, for example, the number of balls, the ball diameter, the inner ring / outer ring dimensions, and the like when the inspection object is a rolling bearing. The model number of the inspection object 1 is the number of the inspection object determined for each specification of the inspection object 1 or the number determined for each of the inspection objects. When the inspection object 1 is a bearing, A number that is also referred to as a nominal name or a nominal number, or a manufacturing number is used.

  The processing result storage means 31 is a means for storing a result processed by the data processing means 4, for example, a processing result processed by the abnormality diagnosis unit 5d. The processing result storage means 31 may be provided as a database, for example, and may store the specification data 16a processed by the data processing means 4 and the data obtained from the vibration sensor 3 together with the identification data of the portable information terminal 2. good. The data processing means 4 has a function of comparing a plurality of the processing results, a function of storing the processing results in the processing result storage means 31 of the server 6, and a search from the processing result storage means 31 under appropriate search conditions. Then, it may have a function of downloading stored processing results. The plurality of processing results may be compared by the portable information terminal 2 using the function to be compared. By comparing a plurality of processing results, it is possible to perform more appropriate inspection and evaluation of the inspection results.

  The terminal-side processing software 33 is software used in the portable information terminal 2 and transmits to the portable information terminal 2 from the reception processing means 13 in response to a transmission request from the portable information terminal 2.

  Specifically, the terminal-side processing software 33 is software such as processing for transmitting detection data detected by the vibration sensor 3 and given to the portable information terminal 2 to the server 6 and causing the server 6 to perform data processing. The terminal-side processing software 33 is installed in the portable information terminal 2, that is, is in an executable state, so that the detection information transmission unit 35, the processing result display unit 36, and the abnormality determination unit are added to the portable information terminal 2. 38 is constructed.

  The configuration of the portable information terminal 2 will be specifically described. As described above, the portable information terminal 2 is a smartphone, a tablet, or the like. The OS 9 that can download and install the application program, the screen display device 21, the manual input unit 22, the communication control unit 23, It has a connection interface 24 and input information storage means 25.

  The screen display device 21 is means for displaying an image on a screen 21a such as a liquid crystal. The manual input means 21 is a means for an operator to input manually, from a hardware keyboard for inputting characters and numbers, or a software keyboard that enables input by touching a finger or a touch pen on the screen 21a. Become. The communication control unit 23 is a unit that performs various processes for communicating with the server 6 via the communication line network 7. The connection interface 24 is an interface for connecting the portable information terminal 2 and other devices. In this example, the connection interface 24 is composed of the micro USB standard plug-in connection terminal, its input / output processing circuit, and software.

  The input information storage means 25 is means for storing detection data of the vibration sensor 3 input via the server 6, the manual input means 22, and the connection interface 24. The input information storage means 25 receives the data processing means 4 and is installed so that it can be executed. The specification data 16a downloaded from the server 6 is stored as a specification data group 26 composed of hierarchical folders. Is done. The detection data storage unit 27 of the input information storage unit 25 stores the detection data obtained from the vibration sensor 3, and the input data storage unit 28 stores various data input from the manual input unit 22, such as a bearing rotation speed. Is memorized.

When the terminal-side software 33 is input and installed, a detection data transmission unit 35, an abnormality determination unit 38, and a processing result display unit 36 are configured.
The detection data transmission means 35 is means for transmitting detection data detected by the vibration sensor 3 and taken into the portable information terminal 2 to the server 6.

  An inspection method using the inspection system of this embodiment will be described. First, as a preparation process, a transmission request for the terminal-side processing software 33 is sent from the portable information terminal 2 to the server 6. In response to this transmission request, the server 6 transmits the terminal-side processing software 33 to the portable information terminal device 2. The portable information terminal device 2 installs the downloaded terminal-side processing software 33 and makes it executable.

In the inspection, the detection data input from the vibration sensor 3 to the portable information terminal 2, the model number of the inspection object 1 input from the manual input means 22, and the inspection of the inspection object 1 by the vibration sensor 3 are performed. Data on the number of rotations (= rotation speed) is transmitted from the portable information terminal 2 to the server 6. The rotational speed data may be data input from the manual input means 22 or data obtained from a rotation detector (not shown).
The server 6 processes the received detection data by the data processing unit 4 using the data 16a of the specification for each model number and the rotation speed, and returns the processing result to the portable information terminal 2 by the processing result return unit 14. . Specifically, the velocity, displacement, acceleration effective value, velocity effective value, and displacement effective value obtained by the data processing unit 4 as described above are returned to the portable information terminal 2.
Further, the data processing means 4 of the server 6 determines, for example, whether there is an abnormality for each part of the inspection object 2 (in the case of a rolling bearing, an inner ring, an outer ring, a rolling element, a cage, etc.), and whether there is an abnormality for each part. The result of is sent back as a processing result. The portable information terminal 2 displays the returned processing result on the screen 21a. For example, the display is made with pictograms and symbols representing the inner ring, outer ring, rolling elements, and cage, and characters and symbols that indicate the presence or absence of abnormality. As a specific example, a display such as “inner ring: ○, outer ring: ○, rolling element: ○, cage: x” is performed.

  In the case of the method of performing data processing by the server 6, the portable information terminal 2 stores the processing results processed by the data processing means 4 and compares a plurality of processing results. good. The comparison of the processing results is performed by the terminal side processing software 33.

  Further, in the case of the method for performing data processing in the server 6, numerical data is obtained as a processing result by the data processing, and the numerical data exceeds a threshold value determined for each model number or is within a threshold value. Is determined to be abnormal when a condition determined by comparison of processing results over time is satisfied, and the determination result is displayed on the screen of the portable information terminal 2 by the processing result display means 36 or the like. Also good.

DESCRIPTION OF SYMBOLS 1 ... Test object 2 ... Portable information terminal 3 ... Vibration sensor 4 ... Data processing means 4a ... Low frequency component cut part 4b ... Speed calculation part 4c ... Displacement calculation part 4d ... Acceleration effective value calculation part 4e ... Speed effective value calculation Unit 4f ... displacement effective value calculation unit 4g ... abnormality diagnosis unit 6 ... server 7 ... communication network 13 ... reception processing unit 14 ... processing result return unit 21a ... screen 33 ... terminal side processing software 35 ... detection data transmission unit 36 ... processing Result display means 37 ... reception processing means

Claims (6)

A general-purpose portable information terminal, a vibration sensor that detects vibration of the inspection object and inputs acceleration data as detection data to the portable information terminal, and is connected to the portable information terminal by a communication network With a server,
The portable information terminal displays detection data transmission means for transmitting detection data composed of acceleration data detected by the vibration sensor to the server, and a processing result returned from the server for the transmitted detection data. A processing result display means;
The server includes a reception processing unit that receives acceleration data that is detection data transmitted from the portable information terminal, a data processing unit that processes the received detection data, and a processing result of the data processing unit. It has processing result return means to return to the information terminal,
The data processing means includes a speed calculation unit that integrates acceleration data as the detection data to obtain a speed, and a mobile terminal use vibration inspection that has a displacement calculation part that integrates the speed obtained by the speed calculation unit to obtain a displacement. system.   2. The vibration testing system using a mobile terminal according to claim 1, wherein the data processing unit of the server is a low frequency component cut unit that cuts a low frequency component from acceleration data that is the detection data before the speed calculation unit. A portable terminal-use vibration inspection system.   3. The mobile terminal vibration inspection system according to claim 2, wherein the low-frequency component cut unit performs frequency analysis on the acceleration data that is the detection data, discards the low-frequency component from the result of the frequency analysis, A mobile terminal-use vibration inspection system that performs processing to return the frequency analysis result of this to the acceleration data based on the time axis data.   4. The mobile-terminal-use vibration inspection system according to claim 1, wherein the data processing unit of the server includes an acceleration effective value calculation unit that calculates an effective value of acceleration from the acceleration data, At least one of a velocity effective value calculation unit that calculates an effective value of velocity from the velocity obtained by the velocity calculation unit, and a displacement effective value calculation unit that calculates the effective value of displacement from the displacement obtained by the displacement calculation unit. The processing result returning means includes the effective value calculated by any one of the effective value calculation units, the velocity obtained by the speed calculation unit, and the displacement obtained by the displacement calculation unit as the processing result. Mobile terminal-use vibration inspection system that returns to the information terminal.   The portable terminal use vibration inspection system according to any one of claims 1 to 4, wherein the inspection object is a rotating machine part. A server constituting a mobile terminal use vibration inspection system,
The portable terminal use inspection system includes a general-purpose portable information terminal, a vibration sensor that detects vibration of the inspection object and inputs acceleration data that is detected data to the portable information terminal, and the portable information terminal. And a server connected to the device by a communication network,
The server includes a reception processing unit that receives acceleration data that is detection data transmitted from the portable information terminal, a data processing unit that processes the received detection data, and a processing result of the data processing unit. It has processing result return means to return to the terminal,
The data processing means includes a low frequency component cut unit that cuts low frequency components from the acceleration data that is the detection data, a speed calculation unit that integrates the acceleration data after the cut of the low frequency components and obtains a speed, and this A mobile terminal-use vibration inspection system server having a displacement calculation unit that obtains a displacement by integrating speeds obtained by a velocity calculation unit.

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