WO2016063755A1

WO2016063755A1 - Belt system state determination system

Info

Publication number: WO2016063755A1
Application number: PCT/JP2015/078866
Authority: WO
Inventors: 泰孝楠見; 浩也加藤; 雄一郎野呂; 健太郎西川
Original assignee: Ntn株式会社
Priority date: 2014-10-20
Filing date: 2015-10-13
Publication date: 2016-04-28
Also published as: JP2016080561A

Abstract

Provided is a belt system state determination system capable of automatically distinguishing the type or individual identification information of pulleys to be measured, whereby the need for an input operation and therefore input errors are eliminated, high measurement result reproducibility is achieved, and an increase in determination accuracy can be achieved by increased measurement accuracy. A belt system (1) has a belt extended between a plurality of pulleys (11). The state determination system is provided with: a plurality of unique information holding means (4) respectively provided for the plurality of pulleys (11) and indicating unique information of the corresponding pulleys (11); and a plurality of sensor units (2). The plurality of sensor units (2) are respectively detachably attached to the plurality of pulleys (11). Each of the sensor units (2) includes a state detection sensor (6) and a reader device (7) for reading the unique information. A processing system (5) extracts determination information from the unique information that has been read, and determines the state of the pulleys (11) using the determination information and on the basis of measurement data. By simultaneous measurement of the plurality of pulleys (11), state determination for a peripheral component can also be made.

Description

Belt system condition judgment system

Related applications

This application claims the priority of Japanese Patent Application No. 2014-213365 filed on October 20, 2014, which is incorporated herein by reference in its entirety.

The present invention relates to a belt system state determination system that is useful for preventing accidents caused by failure by determining the state of a belt system, for example, an auxiliary machine of an automobile or the like.

Up to now, in the industrial field such as railway vehicles and windmills, a permanent monitoring system has been proposed in which an acceleration sensor, a rotation sensor, a temperature sensor, etc. are installed on the bearing and its peripheral parts, and the operation state thereof is monitored. (Patent Document 1)

In addition, it is a handy type that transmits data detected by a dedicated sensor using a portable information terminal such as a smartphone, processes and stores data on a server, etc., and monitors the status by comparing with past data A measurement system has been proposed. (Patent Document 2)

In addition to this, a system for transmitting data detected by a sensor to a server via a portable information terminal or the like, arranging a user interface function in a plurality of personal computers, and sharing measurement data, analysis means, and diagnosis results Has been proposed. (Patent Document 3)
There has also been proposed a system in which a data analysis program, determination reference data, and a determination program are downloaded to a user information processing terminal and a measurement data diagnosis process is performed on the information processing terminal. (Patent Document 4).

JP 2012-042338 A JP 2013-228352 A Japanese Patent No. 4210604 Japanese Patent No. 3858977

At present, for bearing inspection, subjective judgments that rely on the five senses of the mechanic, such as appearance, feeling of crunch, and abnormal noise, are common. For this reason, there are variations in diagnostic criteria, and failure due to poor maintenance can occur. In response to this problem, there is a need for a maintenance tool capable of quantitative determination in order to increase the accuracy of state determination, and the above-described conventional techniques and the like have been proposed. However, the prior art has the following problems.

Although the permanent type monitoring system disclosed in Patent Document 1 and the like has an advantage that it can always be monitored even from a remote place, it is necessary to install a sensor unit for each measurement site, and the equipment becomes expensive. Instead, if one sensor unit is used for a plurality of measurement sites, the position may be shifted from the previous assembly at the time of reassembly.

The handy-type measurement system disclosed in Patent Document 2 has the advantages of excellent portability and low cost. However, when one sensor unit is used for multiple measurement objects (measurement sites), each time the measurement object changes, the measurement object name, measurement conditions (measurement object specifications), etc., or the measurement object Settings such as input / selection of information about type and identification information must be changed.

Patent Documents

3 and 4 also do not propose an improvement plan for setting work such as input / selection of information about the type of measurement object and identification information.

When measuring a plurality of pulleys in a belt system at the same time, the measuring machine side (measurement target, sensor) and the analysis side (measurement conditions, analysis conditions, past data, etc.) must be individually associated.

¡In the case of multiple simultaneous measurements, wiring is complicated when the measuring machine is installed, and a lot of time is required for setting and installation. For this reason, there is a concern that a setting error or a wiring error occurs, or that the setting man-hour increases.

Since the threshold value used as a criterion is a calculated value based on bearing specifications, the criterion is a criterion specific to the object, and is different for each object. For this reason, it is difficult to detect abnormalities in peripheral parts other than the bearing.

In the method of each of the above-mentioned patent documents, in a system including a plurality of rotating shafts, particularly in a system in which each shaft is connected by a belt or the like like an engine accessory, which shaft bearing is caused by vibration, It is difficult to determine which axis is the source of an earthquake when an abnormality occurs. In addition, since measurement is performed for each axis in the system, if there are many measurement objects, the measurement time increases accordingly.

The object of the present invention is to be used for a plurality of belt systems in general and can automatically determine individual identification information such as the type and mounting position of each pulley constituting the belt system to be measured. It is an object of the present invention to provide a belt system state determination system that is unnecessary, does not cause an input error, has good reproducibility of measurement results, and can improve determination accuracy by improving measurement accuracy.

Hereinafter, in order to facilitate understanding, description will be made with reference to the reference numerals of the embodiments.

A state determination system for a belt system according to one configuration of the present invention is a system for determining a state of a belt system 1 in which a belt 89 is stretched between a plurality of pulleys 11 (81 to 88),
A plurality of unique information holding means 4 respectively provided on the plurality of pulleys 11 and indicating the unique information of the corresponding pulleys 11;
A plurality of sensor units detachably attached to each of the plurality of pulleys 11, each sensor unit showing a state detection sensor 6 for measuring a state of the coupled pulley 11, and unique information of the coupled pulley A sensor unit 2 having a reading device 7 for reading the unique information from the unique information holding means 4;
Based on the unique information read by the reading device 7 of the sensor unit 2, the determination information used for the state determination of the pulley 11 is extracted, and the state detection sensor 6 uses the extracted determination information. And a processing system 5 configured to determine the state of the pulley 11 based on the output measurement data.

According to this configuration, the pulley 11 has the unique information holding unit 4, and the sensor unit 2 has the state detection sensor 6 and the reading device 7 that reads the unique information. Therefore, the pulley 11 can be automatically specified based on the unique information read by the sensor unit 2, and even if this state determination system is used for general determination of the states of the plurality of belt systems 1, the pulley 11 is specified. No input operation is required. Therefore, input mistakes do not occur. For example, the sensor unit 2 is attached to a desired measurement target pulley 11 and a measurement start command is given by a switch or the like, and a threshold value corresponding to the measurement target pulley 11 is automatically performed without any other input operation. Etc. can be extracted. For this reason, it is possible to appropriately perform a determination regarding a predetermined state such as an abnormality determination.
That is, for the state determination such as abnormality diagnosis of the pulley 11, information for determination such as a threshold corresponding to the type of the pulley 11 (for example, a threshold corresponding to mechanical part specifications such as bearing specifications) is used. Is automatically extracted based on the unique information read by the sensor unit 2. Therefore, operations such as information input and / or selection are not required. Therefore, when this state determination system is applied to the belt system 1 including a large number of pulleys 11, an effect of eliminating operations such as information input and / or selection is sufficiently exerted.
In addition, since the sensor unit 2 is detachably attached to the pulley 11, even if a measuring element is attached each time measurement is performed, the reproducibility of the measurement result is good, and the accuracy of determination is improved by improving the measurement accuracy. Further, the sensor unit 2 may be attached to the pulley 11 only when measurement is necessary, and the use of the pulley 11 is not hindered.

In a preferred embodiment, the processing system 5 determines a peripheral component state determination unit that determines a state of peripheral components common to the plurality of pulleys 11 based on the determination result of the state of the plurality of pulleys 11. 33b may be included. The “common peripheral parts” are parts having a correlation such as “adjacent, connected by belt 89, connected by gear”. Specifically, peripheral parts common to the plurality of pulleys 11 are belts spanned by the plurality of pulleys 11 and alternators to which one of these pulleys is coupled. That is, peripheral parts common to the plurality of pulleys 11 are parts having an interaction with all of the plurality of pulleys 11.
For multiple pulleys 11, specify whether the information diagnosed as an abnormality is a disturbance that appears in common with each part or due to an abnormality in a limited part by analysis using simultaneous measurement data it can. Therefore, it is possible to determine the state of peripheral parts, which has been difficult in the past. For example, in the case of a belt system 1 in which a vibration source such as an engine and a plurality of rotating shafts such as auxiliary machines are connected by a belt, simultaneous measurement with a plurality of pulleys 11 and correlation between the axes. By grasping the relationship, it is possible to identify an abnormal part including peripheral parts.

In a preferred embodiment, the pulley 11 may have a rolling bearing 12. In the rolling bearing 12, the specifications of the bearing are necessary for the determination of the state, and in the prior art, setting input for the determination has been troublesome. On the other hand, the configuration described above is convenient because no setting input is required.

In a preferred embodiment, the processing system 5 may include a communication processing unit 36 that transmits the result of the determination to a registered terminal 52.
The registered terminal 52 is, for example, a terminal of a predetermined management department of a bearing manufacturer. As a result, an engineer having specialized knowledge can quickly know the diagnosis result and quickly take appropriate measures.

In a preferred embodiment, the pulley 11 may include a stay 3 configured to detachably hold the sensor unit 2, and the unique information holding unit 4 may be provided on the stay 3.
By assembling the sensor unit 2 using the stay 3 fixed integrally with the pulley 11 to be measured, even if the sensor unit is attached to and detached from the stay, high-precision measurement can be performed without assembling errors. The attachment location of the stay 3 that becomes the attachment portion of the sensor unit 2 may be a fixed portion of the pulley 11 or a rotating portion. When attaching the stay 3 to a rotating part, it is preferable to attach it on the extension line of the core O of the rotating part. By measuring on the extension line of the core O of the rotating part, it becomes possible to perform measurement that is not easily affected by vibrations and / or disturbances caused by other parts.
Moreover, the time for attaching the sensor unit 2 to the pulley 11 is shortened by having the stay 3.
When the stay 3 is provided with the unique information holding means 4, the state detection and the reading of the unique information are closer to each other than when the stay 3 and the unique information holding means 4 are provided separately. The advantage that it can be performed by each device in the sensor unit 2 is also obtained.

In a preferred embodiment, the processing system 5 includes a portable information terminal 8 connected to the sensor unit 2 and a data server 9 connected to the information terminal 8 via a communication network 51, The information terminal 8 is configured to acquire the specific information and the measurement data from the sensor unit 2 and transmit them to the data server 9, and the data server 9 is configured to determine the state. May be.
In the case of this configuration, the state determination utilizing the specification database 32 of the data server 9 and the like can be performed, and improvement in determination accuracy can be expected.

In a preferred embodiment, the processing system 5 includes a portable information terminal 8 connected to the sensor unit 2 and a data server 9 connected to the information terminal 8 via a communication network 51, The information terminal 8 is configured to acquire the unique information and the measurement data from the sensor unit 2 and transmit the unique information to the data server 9, and using the determination information, The data server 9 is configured to determine the state of the pulley to which the sensor unit is coupled, and the data server 9 is configured to extract the determination information based on the unique information and transmit the information to the information terminal 8. May be.

The portable information terminal 8 is, for example, a terminal such as a smartphone or a tablet, a notebook personal computer, or the like. In recent years, this type of information terminal 8 has greatly improved the arithmetic processing function, and can perform state determination processing such as abnormality determination with sufficient accuracy and processing speed. However, if determination information such as a threshold value or determination information such as past data is used for each of the plurality of pulleys 11, the amount of data becomes large, and it is difficult to store the information in the portable information terminal 8. There is also a lot of waste due to data being stored redundantly among a plurality of information terminals 8A. Therefore, as described above, the determination information is stored in the data server 9 and transmitted from the data server 9 to the information terminal 8, that is, the data server 9 is simply used as a database. As described above, the information terminal 8 performs only the state determination process, thereby effectively using the advanced processing function of the information terminal 8 and reducing the burden on the data server 9 and the usage cost of the data server 9. However, the state can be determined.

In a preferred embodiment, the belt system 1 may be installed in a vehicle traveling on the road.
In commercial vehicles and the like, maintenance and inspection of many belt systems 1 such as auxiliary machines are frequently and regularly required. Therefore, by applying the state determination system according to the present invention, the labor for maintenance and inspection is simplified and the reliability is improved.

Any combination of at least two configurations disclosed in the claims and / or the specification and / or drawings is included in the present invention. In particular, any combination of two or more of each claim in the claims is included in the present invention.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same reference numerals in a plurality of drawings indicate the same or corresponding parts.
1 is a rear view of a vehicle including a belt system that is a determination target of a state determination system for a belt system according to a first embodiment of the present invention. FIG. 2 is an enlarged rear view of an engine accessory part of the belt system of FIG. 1. It is sectional drawing which expands and shows the pulley, stay, and sensor unit in the belt system of FIG. It is a block diagram which shows the outline | summary of the processing function of the state determination system of the belt system of FIG. It is a block diagram which shows the outline of a conceptual structure of the state determination system of the belt system of FIG. It is a block diagram which shows a certain installation form of the state determination system of the belt system of FIG. It is a block diagram which shows the installation form different from FIG. 6 of the state determination system of the belt system of FIG. It is a figure which shows the flow of the process and action which each component performs about a part of state determination system of the belt system of FIG. 1 with a block configuration. It is a figure which shows the flow of the process and action which each component performs about the whole state determination system of the belt system of FIG. 1 with a block configuration. It is a block diagram which shows the outline | summary of a conceptual structure of the state determination system of the belt system based on 2nd Embodiment of this invention.

A belt system state determination system according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vehicle that is a large commercial vehicle including a belt system 1 to which this state determination system is applied. The figure is a rear view of the vehicle 71 in a state where the bonnet 101 is opened. Therefore, the engine unit 102 is visible from the rear of the vehicle 71 in FIG. The engine portion 71a is enlarged and shown in FIG.

In FIG. 2, an engine 80 includes a compressor pulley 81, a compressor 81a, an alternator pulley 82, an alternator 82a, a compressor pulley 83, a compressor 83a, a crank pulley 84, a water pump pulley 85, a water pump 85a, and an idler pulley 86. The fan pulley 87, the fan 87a, the fan support pulley 88, and the cell motor 90 are installed, and a plurality of endless belts 89 are respectively hooked on some of the plurality of pulleys 81 to 88.

Specifically, the first belt 89-1 is provided for the compressor pulley 81, the crank pulley 84, and the idler pulley 86, and the second belt is provided for the alternator pulley 82, the crank pulley 84, and the water pump pulley 85. 89-2 includes a third pulley 89-3 for the compressor pulley 83 and the crank pulley 84, a fourth belt 89-4 for the crank pulley 84 and the fan support pulley 88, and a fan pulley 87. A fifth belt 89-5 is hung on the fan supporting pulley 88. For each of these belts 89, a belt system 1 is constituted by two to three pulleys and belts 89 around which the belts 89 are hung. In the figure, five belt systems 1 are configured.

FIG. 3 shows one of the pulleys 81 to 88 together with the sensor unit 2 and the stay 3 included in this state determination system. In the figure, the pulleys 81 to 88 are denoted by reference numeral 11 and will be described as “pulley 11” unless otherwise required in the following description. The figure shows together with the pulley 11, the sensor unit 2 for measurement thereof, and the stay 3 fixed to the pulley 11 in a permanent state in order to install the sensor unit 2 on the pulley 11.

As shown in FIG. 4, the state determination system 100 includes a plurality of stays 3 attached to a plurality of pulleys 11 of the belt system 1, a plurality of sensor units 2 respectively corresponding to the stays 3, and one process. And a system 5. Each stay 3 is provided with unique information holding means 4 indicating unique information unique to the pulley 11. Each sensor unit 2 includes a state detection sensor 6 that measures a state quantity of the pulley 11 and the like, and a reading device 7 that reads the unique information from the unique information holding means 4 of the corresponding stay 3. The processing system 5 is a device that processes information obtained by the plurality of sensor units 2. The processing system 5 extracts information for determination such as a predetermined processing method and determination criteria used for determining the state of the pulley 11 based on the unique information read by the reading device 7 of each sensor unit 2. The processing system 5 uses the extracted determination information to determine whether or not the pulley 11 is in a predetermined state based on the measurement data output from the state detection sensor 6 and the state of peripheral components of the pulley 11. Judgment is made about. The stay 3 and the sensor unit 2 are thus installed in a 1: 1 relationship at the time of measurement, while the processing system 5 is wirelessly connected to the plurality of sensor units 2 to process information of each sensor unit 2. Is possible. The processing system 5 may be configured by a single information processing device such as a computer, but in the present embodiment, is configured by an information terminal 8 and a data server 9 as shown in FIG.

3, the pulley 11 includes a pulley main body 11 a that hangs a belt 89 and a rolling bearing 12 fitted to the inner periphery thereof. As a result, the pulley body 11 a is rotatably supported by the rolling bearing 12 on the fixed shaft 13. The rolling bearing 12 is an outer ring rotating, and a pulley body 11a is fitted to the outer peripheral surface of an outer ring 12b that is a rotating side wheel. The rolling bearing 12 is a sealed ball bearing in the present embodiment, and has a rolling element 12c formed of a ball between the inner ring 12a and the outer ring 12b and seals 12d positioned at both ends of both the race rings 12a and 12b. ing. A rotating component 14 such as an end surface cover that covers the end surface of the rolling bearing 12 is attached to the pulley 11. The stay 3 is fixedly installed on the outer surface of the rotating component 14. The stay 3 has a holding portion 3 a that holds the sensor unit 2, and the center of the holding portion 3 a is located on the rotation axis O of the rolling bearing 12. Here, the center of the holding part 3a is the center of gravity of the holding part 3a. The holding portion 3a preferably has a symmetric shape in a cross section orthogonal to the extending direction. The holding part 3a is more preferably cylindrical. In that case, the cross section orthogonal to the extending direction of the holding part 3a is circular.

The stay 3 has a short cylindrical seat portion 3b whose back side surface (one of two back-facing surfaces orthogonal to the extending direction of the stay 3) is joined to the rotating component 14, and the seat portion 3b. And a shaft-shaped holding portion 3a protruding from the center of the front side surface (the other surface of the two back-facing surfaces). The stay 3 may be hollow, semi-hollow, or solid. The material of the stay 3 may be a synthetic resin or a metal. The stay 3 and the rotating component 14 may be joined by any of screws, adhesives, magnetism, welding, labyrinth shapes, rings, and the like.

The holding unit 3a positions and holds the sensor unit 2. Specifically, in the illustrated embodiment, the holding portion 3a is press-fitted into the mounting hole 16 provided in the bottom outer surface 15b of the case 15 of the sensor unit 2, or is fitted with a screw, magnetism, labyrinth shape, or the like. As a result, the bottom outer surface 15 b comes into contact with the front side surface of the seat portion 3 b of the stay 3. As a result, the holding unit 3a positions and holds the sensor unit 2.

Note that the stay 3 may be difficult to attach to the measurement position of the pulley 11. In that case, the stay 3 may be integrated with the pulley 11 or the component 14 to be measured.

In FIG. 3, the unique information holding means 4 is means for storing and showing unique information (identification information of the pulley 11) unique to the corresponding pulley 11, such as an RFID, a one-dimensional barcode, or a two-dimensional barcode. Consists of. A QR code (registered trademark) is used as the two-dimensional barcode. The unique information is preferably information unique to each pulley 11 included in the belt system 1. The unique information may be basic information such as the model number or serial number of the stay 3 itself or its pulley 11, and may be the installation location, the shipping date, the type of the belt system 1, and the internal components and bearings. Specifications and usage conditions thereof may be included. A plurality of unique information holding means 4 may be provided in one stay 3.

The sensor unit 2 includes a wireless communication device 18 that communicates with the processing system 5, a battery 19, and an A / D converter (not shown) in addition to the state detection sensor 6 and the reading device 7. The state detection sensor 6 is a sensor that detects the state quantity of the pulley 11. Although only one state detection sensor 6 may be provided in the sensor unit 2, a plurality of, for example, an acceleration sensor 6a for measuring vibration and a gyro sensor 6b for detecting rotation are provided as shown in FIG. May be. In addition, the state detection sensor 6 may have a temperature sensor (not shown).

In this embodiment, the state detection sensor 6 is a sensor that outputs measurement data composed of analog signals. The output measurement data is digitally converted by the A / D converter and output wirelessly. The sensor unit 2 may output the measurement data as an analog signal in a wired manner and A / D convert it by the information terminal 8 (FIG. 5). A sensor that outputs measurement data composed of digital signals may be used as the state detection sensor 6.

When the sensor unit 2 is installed in the movable part of the belt system 1 to be measured, a signal of measurement data may be transmitted to the information terminal 8 by wire using a slip ring (not shown). The battery 19 (FIG. 3) may be a battery type or a charging type. The processing elements such as the sensor 6, the wireless communication device 18, and the reading device 7 of the sensor unit 2 may be powered by non-contact power feeding or slip ring without using a battery.

The reading device 7 is a device that reads information indicated by the unique information holding means 4 provided in the stay 3 in a non-contact manner or in contact with the unique information holding means 4. The reading device 7 is provided so that the information indicated by the unique information holding means 4 can be read in a state where the sensor unit 2 is held by the stay 3 so that the state detection sensor 6 can detect the state of the mechanical component 1. ing. When the sensor unit 2 is assembled to the stay 3, if the unique information holding means 4 is read into the reading device 7, the information indicated by the unique information holding means 4 can be read in a state where the state can be detected. You don't have to. The reading device 7 is a tag reader when the unique information holding means 4 is an RFID, and a barcode reader when the unique information holding means 4 is a one-dimensional or two-dimensional barcode. The wireless communication device 18 transmits the read unique information to the processing system 5 together with the measurement data. A sensor unit identifier such as identification data of the sensor unit 2 may be transmitted together with the measurement data and the unique information. The wireless communication device 18 may be a device capable of wireless communication at a very short distance.

In FIG. 5, the information terminal 8 of the processing system 5 receives measurement data and unique information from the plurality of sensor units 2 and transmits information to the data server 9 via the communication network 51. At this time, data transmission / reception is performed at the same time or in a preset order.
FIG. 6 shows the relationship between the plurality of sensor units 2 and the information terminal 8.

The information terminal 8 includes a communication device 21 capable of receiving data from the sensor unit 2 wirelessly or by wire, and another communication processing unit 21A is connected to a communication network 51 such as the Internet. The communication processing unit 21A may be a unit that communicates wirelessly. The information terminal 8 displays the related information on the screen 23a of the display device 23 such as a liquid crystal display device via the terminal side processing means 22 configured by dedicated software. The communication processing unit 21A acquires, for example, the unique information of each pulley 11 included in the belt system 1 to be measured, the past measurement data, the state determination result, and the like stored in the data server 9, and the display device 23 Allows browsing on the screen. The communication network 51 is a computer communication network such as the Internet, for example. Therefore, the display device 23 of the information terminal 8 can browse the related information using a Web browser or the like.

The terminal side processing means 22 is composed of dedicated software and has a function of controlling information communication with the sensor unit 2 and the data server 9, data display, and the like. The dedicated software constituting the terminal side processing means 22 may be installed after being downloaded from the data server 9. Alternatively, the dedicated software is stored in a portable storage medium such as a CD or DVD, and may be installed from the storage medium. Alternatively, the communication network 51 may be obtained and installed from a homepage or an application site on a server other than the data server 9 on the Internet. The OS (operation program) 24 of the information terminal 8 has a function that enables such download and installation. The terminal-side processing means 22 displays, for example, the specific information of the stay 3, the measurement data of the sensor unit 2, the state determination result or the analysis result acquired from the data server 9 on the screen 23 a of the display device 23. Etc. are displayed.

The information terminal 8 further includes an input unit 25 such as a touch panel for input by an operator, and an information storage unit 26 for storing the measurement data and unique information, the state determination result, the analysis result, and the like.

The data server 9 includes an information storage unit 31, a specification database 32, a state determination unit 33, a data analysis unit 34, a processing data storage unit 35, and a communication processing unit 36. The state determination unit 33 includes a pulley state determination unit 33a that determines the state of each pulley 11 and a peripheral component state determination unit 33b that determines the state of peripheral components.

The data server 9 receives the measurement data and unique information from the information terminal 8 by the communication processing unit 36 and stores the measurement data in the information storage unit 31. The data server 9 also identifies the measurement site by specifying the bearings, peripheral components, vehicle information, and the like stored in the specification database 32 based on the received unique information. Using the information storage unit 31 and / or the specification database 32, signal processing conditions and determination conditions (determination information) suitable for the pulley 11 to be measured are determined, and the measurement data received by the data analysis unit 34 is obtained. To analyze. The analysis result is stored in the processing data storage unit 35. The determination condition is set or updated using accumulated data for each part.

The pulley state determination unit 33a of the state determination unit 33 determines the state of the pulley 11 by comparing the analysis result with information for determination such as a determination threshold value. Further, the pulley state determination unit 33a of the state determination unit 33 estimates an abnormality occurrence part using the information on the bearings and peripheral parts stored in the specification database 32 and the analysis result. The analysis result and the abnormality determination result are transmitted to the information terminal 8 that is the transmission source.

When the pulley state determination unit 33a makes a determination based on the measurement data for the plurality of pulleys 11, based on the individual information received in advance, the past measurement data for the pulley 11 that is the measurement target component or a preset value is set. Determination such as comparison is performed on individual measurement data so that determination information such as a threshold is linked to each analysis result. Thereafter, the entire determination is performed based on the individual determination results.

The peripheral component state determination unit 33b determines the state of the peripheral component using the result of the pulley state determination unit 33a. The peripheral parts are parts connected by a belt 89, a gear (not shown) or the like, or parts having a positional relationship adjacent to each other.

The information storage unit 31 also stores part history (various histories of the machine part 1) such as measurement data and measurement results and / or data analysis results of the pulleys 11 whose states have been measured, a result output format, and the like. Has been. The information storage unit 31 may store measurement conditions based on the unique information.

The specification database 32 stores specifications of the pulley 11, for example, bearing specifications of the rolling bearing 12. The specification database 32 may store specifications of peripheral parts, specifications of a part of the pulley 11 to be measured equipped with a bearing, and the like. In addition, in either the specification database 32 or the information storage unit 31, determination method for determining the state according to the type of the pulley 11, determination information such as a threshold value (determination condition), and the like are stored.

The data analysis unit 34 performs frequency analysis, which is signal processing of measurement data, and converts the signal into a signal that can easily determine the state such as abnormality determination. In this frequency analysis, not only vibration data but also rotational speed data may be used among the measurement data.

The state determination unit 33 determines whether there is an abnormality in the belt system 1 by comparing the result of processing by the data analysis unit 34 with information for determination such as part history or past measurement data or a preset threshold value. Do.

The processing data storage unit 35 stores the analysis result performed by the data analysis unit 34 and the result of the state determination performed by the state determination unit 33 as a history for each pulley 11.

The display terminal 52 is an information terminal having a display function and a communication function. The display terminal 52 accesses the data server 9 and stores the unique information of each pulley 11 included in the belt system 1 to be measured, the past measurement data, the result of state determination, etc. stored in the processing data storage unit 35. Browsing is possible. The display terminal 52 can receive and display information acquired from the data server 9 via the communication network 51 from the communication processing unit 36 in the data server 9, for example. In this case, the communication processing unit 36 may perform access restriction by registering the authorized display terminal 52 or using a password or the like.

The communication processing unit 36 of the data server 9 transmits and displays the result of the state determination to at least the information terminal 8 that has transmitted the measurement data. In addition to the information terminal 8 that has transmitted the measurement data, the status processing result or the like may be transmitted to the display terminal 52 in which the address is registered. The display terminal 52 in which the address is registered is, for example, a terminal of a predetermined business department of a bearing manufacturer.
Note that the communication processing unit 36 of the data server 9 processes a plurality of data at the same time or in a preset order when the display terminal 52 or the information terminal 8 receives a plurality of data.

FIG. 8 is a block diagram showing a flow of processing and action performed by each component of the state determination system 100. For simplicity of explanation, a case where one pulley 11 is used will be described.
When the sensor unit 2 is attached to the stay 3 and the power of the sensor unit 2 is turned on, a calling signal (such as a radio wave) of specific information is transmitted from the sensor unit 2 to the stay 3. In response to the call signal, the unique information holding means 4 comprising an RFID built in the stay 3 in the signal transmits the held unique information to the sensor unit 2. The state detection sensor 6 incorporated in the sensor unit 2 measures the state quantity of the pulley 11 and transmits the measurement data to the information terminal 8 together with the specific information.

The information terminal 8 is connected to the data server 9 via the communication network 51, and transmits the measurement data and the unique information received from the sensor unit 2 to the data server 9. The data server 9 receives the measurement data and the unique information from the information terminal 8 via the communication network 51. The data server 9 extracts information on the pulley 11 to be measured (determination information, part history, past measurement data, etc.) from the information storage unit 31 and the specification database 32 using the unique information as a key. The data analysis unit 34 of the data server 9 processes the measurement data. The state determination unit 33 of the data server 9 determines the state of the pulley 1 by comparing the processing result by the data analysis unit 34 with the extracted component history or past measurement data or preset determination information. Do. When the result of determination by the data analysis unit 34 is abnormal, the communication processing unit 36 of the data server 9 transmits a signal for causing the display terminal 52 to display “abnormal” and data regarding the result of the state determination. At the same time, the administrator of the display terminal 52, for example, a business unit of a bearing manufacturer is contacted by telephone, e-mail, SNS or the like. When there is no abnormality, the communication processing unit 36 transmits a signal for causing the display terminal 52 to display “no abnormality” and data regarding the result of the state determination.

Note that the information terminal 8 and the display terminal 52 may be configured by a common terminal 95.

FIG. 9 is a block diagram showing the overall processing flow in the data server 9 of the state determination system 100. The data server 9 receives a plurality of received data (measurement data) A, B, C... Z (measurement data, unique information, etc.) from the information terminal 8 simultaneously or in a preset order. The plurality of received data A, B, C... Z are distinguished for each sensor unit 2 (sensor units A, B...). Based on the unique information transmitted together with the received data A, B, C..., Stored data related to the measurement target pulley 11 is extracted from the information storage unit 31 or the specification database 32 and the processing data storage unit 35. Further, the measurement data is processed by the data analysis unit 34. Then, based on the result, the pulley state determination unit 33a of the state determination unit 33 uses the determination information set in advance or the past data (analysis result or the like) extracted from the information storage unit 31 or the processing data storage unit 35. Next, abnormality determination of each sensor unit 2 is performed.

Here, when it is determined that there is no abnormality in the measurement data by all the target sensor units 2, the result of “no abnormality” and the analysis result data are transferred to the display terminal 52 and the information terminal 8. On the other hand, when it is determined that there is an abnormality in the measurement data by the sensor unit 2, a comprehensive determination is performed. In the comprehensive determination, the sensor unit 2 that has measured the measurement data determined to be abnormal is specified, and information on the pulley 11 that the sensor unit 2 measures in the information storage unit 31 or the processing data storage unit 35, peripheral component information, and the like Is extracted. Next, the state determination is performed again based on the measurement data of the sensor unit 2 determined to be abnormal, the predetermined determination information of the peripheral components, the extracted past data, and the like. When it is not determined to be abnormal, the result of “no abnormality” and analysis result data are transferred to the display terminal 52 or the information terminal 8, and when it is determined that there is an abnormality, “abnormal” to the display terminal 52 or the information terminal 8. The results and analysis result data are transferred, and the administrator and user are contacted.

Comprehensive determination considering the correlation between the measurement positions will be described. That is, the state determination target includes not only the pulley 11 but also peripheral components.
For example, in the case of a system in which a plurality of shafts are connected by a belt 89 or the like, such as an engine accessory, the influence of damage to a certain shaft is transmitted via the belt 89 and affects the measurement results of other parts. Sometimes. Conversely, damage and wear of transmission parts such as the belt 89 and gears may affect the measurement results of each axis.

In this embodiment, the peripheral component state determination unit 33b takes into account the correlation of each measurement position (adjacent, connected by a belt, connected by a gear), etc., and vibration analysis data at each measurement location. Based on these comparisons, the damaged part including peripheral parts is diagnosed.

An outline of the effect of determination by a plurality of simultaneous determinations according to this embodiment, that is, parallel processing will be described below.
With this configuration, it is possible to simultaneously diagnose a plurality of vehicle bearings. By simultaneous measurement at a plurality of locations, it is possible to determine whether the disturbance is common to each site or due to a limited abnormality of the movable part. For example, in the case of a facility where a vibration source such as an engine and a plurality of rotating shafts such as auxiliary machines are connected by a belt, simultaneous measurement at multiple locations and the correlation between each axis are grasped. This makes it possible to identify abnormal sites including peripheral parts.

Specifically, many vehicle bearings are used in automobiles, especially large vehicles such as buses and trucks with heavy travel loads, such as long-distance travel in a short period, repeated start and stop, transportation of heavy objects, etc. In addition to the high frequency of regular periodic inspections, business operators also set up daily and periodic inspections independently. Nevertheless, in the past, subjective judgments that relied on the five senses were common for inspection of belt systems and bearings. For this reason, inspection man-hours are required, and the judgment criteria vary. This embodiment allows simultaneous and automatic state diagnosis, thereby reducing time and man-hours. In addition, since data is accumulated, big data is realized, and comparison of past data and data of other vehicles based on this data and statistical processing are performed to improve the accuracy of state determination and prevent failures and accidents. Can be prevented.

In the case of the belt system 1 in which a plurality of shafts are connected by a belt 89 or the like like an engine accessory, there may be the influence of disturbance from other shafts. According to this embodiment, it is possible to improve diagnosis accuracy and detect states of peripheral parts (in-unit parts such as a belt and an alternator) by performing simultaneous measurement and comprehensive judgment in consideration of the correlation of each axis.
Using the analysis results based on the bearing and peripheral component information stored in the specification database 32, an abnormality occurrence site is estimated and diagnostic result data is created.

Other effects and operation methods in this embodiment will be described.
Unique information unique to the pulley 11 is held in the unique information holding means 4. The sensor unit 2 includes a state detection sensor 6 and a reading device 7 that reads unique information held in the unique information holding unit 4. Therefore, the pulley 11 can be automatically identified from the unique information read by the sensor unit 2, and even if this state determination system is used for determining the state of the plurality of pulleys 11, an input operation for specifying the pulley 11 is not required. is there. Therefore, input mistakes do not occur. For example, as described above, the sensor unit 2 is attached to each pulley 11 included in the belt system 1 to be measured, and a measurement start command is given by a switch or the like. Information for determination such as a threshold value corresponding to each pulley 11 included in the belt system 1 to be measured can be extracted. For this reason, it is possible to appropriately perform a determination regarding a predetermined state such as an abnormality determination.

・ Since the sensor unit 2 is detachably attached to the pulley 11, the reproducibility of the measurement result is good even if a probe is attached every time the measurement is performed, and the accuracy of the determination is improved by improving the accuracy of the measurement result. Further, the sensor unit 2 may be attached to the pulley 11 only when measurement is necessary, and the use of the pulley 11 is not hindered.

In particular, when the stay 3 is permanently installed on the pulley 11, the following advantages are obtained. The mounting position of the sensor unit 2 is stable, and variations in measurement data due to mounting errors can be suppressed, and preparation for measurement can be performed in a short time.
Even if the mounting location of the sensor cannot be secured in the fixed part of the vehicle bearing and its peripheral parts included in the pulley 11 to be measured, by providing the stay 3, the movable part of the vehicle bearing and its peripheral parts The sensor unit 2 having a sensor for measuring the state of the measurement target can be mounted.
If the measurement is performed as close as possible to a part that is likely to be damaged, such as a bearing, it is possible to detect an abnormality with high accuracy. Moreover, it is more effective to measure simultaneously at a plurality of locations.
Even when the sensor unit 2 is installed in the movable part, if the movable center is measured, it is difficult to be affected by disturbances and high-precision measurement is possible.

By providing the unique information holding means 4 in the stay 3, the measurement object can be easily identified, and the measurement can be prepared in a short time.
・ Data storage and past data search are easy.
・ Since the parts to be measured can be specified using unique information, measurement information can be set according to the environment for each part, not for each bearing part number. In addition, it is possible to make a highly accurate determination in consideration of disturbance.
-From the information setup 8 to the measurement setup to the browsing of the diagnosis result becomes possible. The information terminal 8 may be a portable terminal such as a smartphone. If it is a portable type, the operation can be performed near the pulley 11 to be measured.

The information terminal 8 can perform processing such as selection of a part for transferring measurement data to the data server 9. The information terminal 8 can access the data server 9 to register or change information related to the unique information of the stay 3 (vehicles, parts, correlation of each measurement part (linkage of each measurement part), exchange history, etc.). The information terminal 8 can access the data server 9 and browse past measurement data, state diagnosis results, and the like of each measurement site. The information terminal 8 can also browse a comparison of results of a plurality of measurement sites in a list or a selection formula.

FIG. 7 is a block configuration diagram in which the combination of the stay 3 and the sensor unit 2 is different from that in FIG. Since the stay 3 is provided with the unique information holding means 4, the stay 3 and the sensor unit 2 can be freely combined as shown in FIG. The combination can be freely performed because the pulley 11 can be automatically identified. Moreover, no matter which sensor unit 2 is attached to which pulley 11, highly accurate measurement with small assembling error is possible. (There is no need to associate sensor unit 2 with stay 3)

FIG. 10 shows a belt system state determination system 100A according to a second embodiment of the present invention. In the belt system state determination system 100 according to the first embodiment shown in FIGS. 1 to 9, the data server 9 performs data analysis and state determination, but according to the present embodiment of FIG. The belt system state determination system 100A is configured to perform data analysis and state determination by an information terminal (information / display terminal) 8A, and the information terminal 8A is an information / display terminal having an information display function. .

In the following description, the same reference numerals are assigned to the portions corresponding to the matters described in the preceding form in this embodiment, and the overlapping description is omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in advance unless otherwise specified. The same effect is obtained from the same configuration. Not only the combination of the parts specifically described in each embodiment, but also the embodiments can be partially combined as long as the combination does not hinder.

In this embodiment, the processing system 5 includes the information terminal 8A and a data server 9 connected to the information terminal 8A via a communication network 51. The information terminal 8A obtains the measurement data and the unique information from the sensor unit 2 and transmits the unique information to the data server 9, a data analysis unit 44, a state determination unit 43, Have The data server 9 includes the specification database 32 storing the specification information of each pulley 11 included in the belt system 1 corresponding to each unique information, and the belt system based on the unique information transmitted from the information terminal 8A. 1 includes a communication processing unit 36 that automatically identifies each pulley 11 included in 1, extracts specification information of each pulley 11, and transmits the specification information to the information terminal 8 </ b> A. The data analysis unit 44 and the state determination unit 43 of the information terminal 8A analyze the measurement data obtained from the sensor unit 2 using the specification information transmitted from the data server 9, and the state of each pulley 11 Each determination is performed. The state determination unit 43 is further configured to determine the state of the peripheral parts in the same manner as the determination of the state of the pulley 11. That is, the state determination unit 43 includes a peripheral component state determination unit (not shown).

Even if information terminals in recent years are portable terminals such as personal computers, smartphones, tablets, etc., the arithmetic processing function has dramatically improved, and state determination processing such as abnormality determination with sufficient accuracy and processing speed Can be done. However, when information for determination such as a threshold or information for determination such as past data is used for each of the plurality of belt systems 1, the amount of data becomes huge, and it is difficult to store the information in the portable information terminal 8A. In addition, there is a lot of waste due to data being stored redundantly among a plurality of information terminals 8A. Therefore, as described above, the determination information is stored in the data server 9 and transmitted from the data server 9 to the information terminal 8A, that is, the data server 9 is simply used as a database. In this way, the information terminal 8A performs only the state determination process, thereby effectively using the advanced processing function of the information terminal 8A and reducing the burden on the data server 9 and the usage cost of the data server 9. However, the state can be determined.

Also in this embodiment, the data server 9 stores the measurement data of each pulley 11 and the like included in the belt system 1 that has performed the state measurement, the component history of the determination result and / or the data analysis result, etc. in the belt system 1. An information storage unit 31 that stores history information of each included pulley 11 and the like may be included, and the data server 9 may perform the state determination using the history information of the belt system 1.

Even if it is determined to be normal by performing a state determination such as abnormality determination with determination information determined from machine part specifications for each type of each pulley 11 included in the belt system 1, past determination information about the individual is stored. When used, it may be determined to be abnormal, and vice versa. Therefore, in addition to state determination based on machine part specifications for each type, state determination using history information is performed, and the determination unit such as abnormality determination is improved by comprehensively performing a determination unit from the results of both determinations. .
Other configurations and effects of the belt system state determination system 100A according to the present embodiment are the same as the configurations and effects of the belt system state determination system 100 according to the first embodiment shown in FIGS. It is.

The data server 9 has a function of performing the data analysis and the state determination as in the embodiments of FIGS. 1 to 9, and the information terminal 8A is configured to perform the data analysis and the state according to setting conditions. It may have a function of switching whether to perform the determination at the information terminal 8A or the data server 9.

In addition, although the said embodiment made object the belt system 1 of a vehicle, this invention is applicable to belt system general state determination, such as an industrial machine.

Whether the state determination unit 33 (43) and the data analysis unit 34 (44) are provided in the data server 9 or the information terminal 8A is mounted on the processor. Further, the pulley state determination unit 33a and the peripheral component state determination unit 33b included in the state determination unit 33 are also mounted on the processor in the apparatus provided with the state determination unit 33.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily assume various changes and modifications within the obvious scope by looking at the present specification. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

1: Belt system 2: Sensor unit 4: Specific information holding means 5: Processing system 6: State detection sensor 7: Reading device 11: Pulley

Claims

A belt system state determination system for determining a state of a belt system in which a belt is stretched between a plurality of pulleys,
A plurality of unique information holding means provided on each of the plurality of pulleys and indicating unique information of the corresponding pulley;
A plurality of sensor units detachably attached to each of the plurality of pulleys, each sensor unit measuring a state of the coupled pulley, and the unique information indicating the unique information of the coupled pulley A sensor unit having a reader for reading the unique information from the holding means;
Based on the unique information read by the reading device of the sensor unit, the determination information used for the pulley state determination is extracted, and the measurement data output by the state detection sensor using the extracted determination information And a processing system configured to make a determination on the state of the pulley based on the above.
The state determination system for a belt system according to claim 1, wherein the processing system determines a state of peripheral parts common to the plurality of pulleys based on a result of determination of the state for the plurality of pulleys. A belt system state determination system having a peripheral component state determination unit to perform.
The belt system state determination system according to claim 1 or 2, wherein the pulley has a rolling bearing.
The state determination system of the belt system according to any one of claims 1 to 3, wherein the processing system includes a communication processing unit that transmits a result of the determination to a registered terminal. Judgment system.
5. The belt system state determination system according to claim 1, wherein the pulley includes a stay configured to detachably hold the sensor unit, and the stay includes the stay. A belt system state determination system provided with unique information holding means.
The state determination system for a belt system according to any one of claims 1 to 5, wherein the processing system includes a portable information terminal connected to the sensor unit and a communication network connected to the information terminal. And connected data servers,
The information terminal is configured to acquire the specific information and the measurement data from the sensor unit and transmit them to the data server;
A state determination system for a belt system, wherein the data server is configured to determine the state.
The state determination system for a belt system according to any one of claims 1 to 5, wherein the processing system includes a portable information terminal connected to the sensor unit and a communication network connected to the information terminal. And connected data servers,
The information terminal is configured to acquire the unique information and the measurement data from the sensor unit and transmit the unique information to the server, and using the determination information, the sensor unit Is configured to make a determination about the state of the pulley to which
The status determination system for a belt system, wherein the data server is configured to extract the determination information based on the unique information and transmit the extracted information to the information terminal.
The belt system state determination system according to any one of claims 1 to 7, wherein the belt system is installed in a vehicle traveling on a road.