JP2016080561A - Belt system state determination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a general-purpose belt system state determination system that can automatically discriminate information on a category of a pulley and the like or individual identification serving as a measurement object, makes input operations unnecessary, attains eradication of faulty inputs, and allows improvement in repeatability of measurement results and accuracy to realize improvement in accuracy of determinations.SOLUTION: The present invention relates to a system that determines a state of a belt system 1 having a belt hug over among a plurality of pulleys 11, and the system has: unique information storage means 4 that is provided in the plurality of pulleys 11, and is indicative of unique information on the pulley 11; and a sensor unit 2, in which the sensor unit 2 freely attachable/detachable to/from the pulley 11 has: a state detection sensor 6; and a reading device 7 for reading the unique information. Processing system 5 is provided that selects determination information from the read unique information, and makes a determination about a state of the pulley 11 from measurement data. A simultaneous measurement of the plurality of pulleys 11 also enables a determination of peripheral components.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a belt system, for example, a belt system state determination system that determines the state of a belt system in an auxiliary machine such as an automobile and helps prevent an accident caused by a failure.

2. Description of the Related Art Conventionally, in the industrial field such as railway vehicles and windmills, a permanent type monitoring system has been proposed in which an acceleration sensor, a rotation sensor, a temperature sensor, and the like are installed on bearings and their peripheral components, and the operation state is monitored. (Patent Document 1)
In addition, a handy type measurement system that transmits data detected by a dedicated sensor using a mobile information terminal such as a smartphone, processes and stores data on a server, etc., and compares the data with past data. 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 2012-02338 A JP 2013-228352 A Japanese Patent No. 421064 Japanese Patent No. 385977

  Currently, for bearing inspections, subjective judgments that depend on the five senses of the mechanic, such as appearance, feeling of sensation, and abnormal noise, are common, and because there are variations in diagnostic criteria, failure due to poor maintenance cannot be eradicated. . 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.

  The permanent monitoring system disclosed in Patent Document 1 and the like has an advantage that it can always be monitored even in a remote place, but a sensor is required for each measurement site, and the equipment is expensive. In addition, there is a possibility that the position may be shifted from the previous time during reassembly, and there are concerns such as deterioration in measurement accuracy, reproducibility, and instability.

The handy-type measurement system disclosed in Patent Document 2 has the advantages of excellent portability and low cost. However, each time the measurement target changes, the measurement unit changes when using a single sensor unit for multiple measurement targets. Settings such as the name of the object, measurement conditions (specifications of the object to be measured), etc., or input / selection of information on the type and identification information of the object to be measured must be changed. For this reason, it takes time for input work, and there is a concern that a setting error may occur. For example, a name setting rule is required for data sharing, and there are concerns such as setting / selection errors and information overwriting / loss.
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 individual information.

  In the case of multiple simultaneous measurements, such as when measuring each pulley of a belt system, the measuring machine side (measurement object, sensor) and the analysis side (measurement conditions, analysis conditions, past data, etc.) must be matched individually.

  In the case of multiple simultaneous measurements, the wiring becomes complicated when the measuring machine is installed, and it takes a lot of time for setting and installation. Therefore, there are concerns such as setting mistakes, wiring mistakes, and large setting man-hours.

  The detection standard is specialized for the object such that the threshold value as the determination standard is a calculated value from the bearing specifications and the like, and it is difficult to detect abnormalities in peripheral parts.

  In the method of each of the above-mentioned patent documents, when each shaft is connected by a belt or the like, such as a unit including a plurality of rotating shafts, particularly an engine auxiliary machine, which bearing has a vibration value, or an abnormality has occurred. Sometimes it is difficult to determine which axis is the source. In addition, since the measurement is performed for each set, the measurement time increases as the number of measurement objects increases.

The object of the present invention is to be used for general purposes in a plurality of belt systems, and can automatically identify individual identification information such as the type and mounting position of each pulley constituting the belt system to be measured, eliminating the need for an input operation. It is to provide a state determination system for a belt system that can eliminate errors and input errors, and can improve determination accuracy by improving reproducibility and accuracy of measurement results.
Another object of the present invention is to make it possible to easily determine the state of peripheral parts such as a pulley from the result of determining the state of the pulley and the like.

The state determination system of the belt system of the present invention is a system for determining the state of the belt system 1 in which a belt 89 is stretched between a plurality of pulleys 11 (81 to 88),
Unique information storage means 4 provided on the plurality of pulleys 11 and indicating unique information of the pulleys 11;
A sensor unit 2 detachably attached to the pulley 11 and having a state detection sensor 6 for measuring the state of the pulley 11 and a reading device 7 for reading the unique information from the unique information storage means 4;
From the unique information read by the reading device 7 of the sensor unit 2, determination information used for determining the state of the pulley 11 is selected, and from the measurement data output from the state detection sensor 6 using the selected determination information. A processing system 5 for determining the state of the pulley 11;
Is provided.

According to this configuration, the pulley 11 has the unique information storage 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 identified from the unique information read by the sensor unit 2, and even if this state determination system is used for a plurality of belt systems 1, an input operation for identifying the pulley 11 is not required. And eradicating input mistakes. For example, the sensor unit 2 is attached to a desired pulley 11 to be measured, and a threshold value corresponding to the pulley 11 to be measured is automatically provided without any other input operation simply by giving a measurement start command using a switch or the like. It is possible to select the information for determination such as, and to appropriately determine the determined state such as abnormality determination.
That is, for the state determination such as abnormality diagnosis of the pulley 11, information for determination such as a threshold according to the type of the pulley 11, for example, a threshold according to the machine part specifications such as the bearing specifications is used. The determined information can be automatically selected from the unique information read by the sensor unit 2. For this reason, operations such as information input / selection are not required, and when used in a belt system 1 having a large number of pulleys 11, the effect of not requiring information input / selection is particularly effective. In addition, since the sensor unit 2 is detachably attached to the pulley 11, unlike the conventional device in which the probe is attached each time, the reproducibility of the measurement result and the determination accuracy can be improved by improving the 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 the present invention, the processing system 5 includes a peripheral component state determination unit 33b that determines a state of peripheral components common to the plurality of pulleys 11 based on the determination result of the states of the plurality of pulleys 11. May be. The “common peripheral parts” are parts having a correlation such as “adjacent, connected by belt 89, connected by gear”.
By analysis using the simultaneous measurement data of the plurality of pulleys 11, it is possible to specify whether the information diagnosed as abnormality is a disturbance that appears in common to each part or is caused by abnormality in a limited part. 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 the present invention, 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 takes time. Therefore, the effect of this invention is exhibited more effectively.

In the present invention, 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 the present invention, the pulley 11 may have a stay 3 that detachably holds the sensor unit 2, and the stay 3 may be provided with the unique information storage unit 4.
By assembling the sensor unit 2 using the stay 3 fixed integrally with the pulley 11 to be measured, repeated measurement without assembling error is possible. The mounting portion of the stay 3 which is the mounting portion of the sensor unit 2 can be either a fixed portion of the pulley 11 or a rotating portion. When attaching the stay 3 to the rotating part, it is preferable to attach it on the rotating part core O. The measurement on the rotating part core O enables measurement that is not easily affected by disturbances such as vibrations 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 unique information storage means 4 is provided in the stay 3, the state detection and the reading of unique information are closer to each other than when the stay 3 and the unique information storage means 4 are provided separately. It is easy to perform, and the advantage that it can be performed collectively by the sensor unit 2 is also obtained.

In the present invention, 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 may obtain the unique information and the measurement data from the sensor unit 2 and transmit them to the data server 9, and the data server 9 may determine the state.
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 the present invention, 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 a function of obtaining the unique information and the measurement data from the sensor unit 2 and transmitting the unique information to the data server 9, and using the determination information transmitted from the data server 9. The data server 9 may have a function of selecting the determination information from the unique information and transmitting it to the information terminal 8.
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, determination information such as threshold values and past data, when used for a plurality of pulleys 11 for a general purpose, has an enormous amount of data and is difficult to store in the information terminal 8 at hand and is wasteful. 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, and the information terminal 8 determines its state. By performing only the above processing, it is possible to effectively use the advanced processing function of the information terminal 8 and perform state determination while reducing the burden on the data server 9 and the usage cost of the data server 9.

In the present invention, the belt system 1 may be for a vehicle traveling on a 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.

The state determination system for a belt system according to the present invention is a system for determining a state of a belt system in which a belt is stretched between a plurality of pulleys, and is provided on the plurality of pulleys and indicates unique information on the pulleys. A storage unit; a sensor unit that is detachably attached to the pulley and that measures the state of the pulley; and a sensor unit that reads the unique information from the unique information storage means; and the reading device of the sensor unit A processing system that selects determination information to be used for the pulley state determination from the unique information read in step, and uses the selected determination information to determine the pulley state from the measurement data output by the state detection sensor. Therefore, the belt system that is used for general purposes in multiple belt systems and is the object of measurement Individual identification information, such as the type and mounting position of each pulley that makes up the system, can be automatically identified, eliminating the need for input operations, eliminating input errors, and improving the reproducibility and accuracy of measurement results. Accuracy can be improved.
If the processing system has a peripheral component state determination unit that determines the state of peripheral components common to the plurality of pulleys based on the determination result of the state of the plurality of pulleys, the pulley state From the determination result, it is possible to easily determine the state of the peripheral parts of the pulley.

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. It is an enlarged rear view of the engine auxiliary machine part. It is sectional drawing which expands and shows the pulley, stay, and sensor unit in the belt system. It is a block diagram which shows the outline | summary of the processing function of the state determination system of the belt system. It is a block diagram which shows the outline of a conceptual structure of the state determination system of the belt system. It is a block diagram which shows the conceptual structure of the state determination system of the belt system. It is a block diagram which shows the conceptual structure in the modification of the state determination system of the belt system. It is a flowchart which shows the outline | summary of the process in the state determination system of the same belt system. It is a flowchart which shows the detail of the process in the state determination system of the belt system. It is a block diagram which shows the outline | summary of the conceptual structure of the state determination system of the belt system which concerns on other embodiment of this invention. FIG. 4B is a side view showing the mounting parts for the stay.

  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. In the figure, a vehicle 71 is a rear view showing a state in which the bonnet 101 is opened and the engine unit 102 is shown, and the engine unit 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 hung on the pulleys 81 to 88.

  Specifically, one belt 89 is provided for the compressor pulley 81, the crank pulley 84, and the idler pulley 86, and another belt is provided for the alternator pulley 82, the crank pulley 84, and the water pump pulley 85. 89, the compressor pulley 83 and the crank pulley 84 have another belt 89, and the crank pulley 84 and the fan support pulley 88 have another belt 89, the fan pulley 87 and the fan support. Another belt 89 is hung on the pulley 88 for use. For each of these belts 89, the 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 a representative example of the pulleys 81 to 88 together with the sensor unit 2 and the stay 3 constituting the state determination system. In the figure, the pulleys 81 to 88 are denoted by reference numeral 11 and are described as “pulleys 11” unless otherwise necessary in the following description. The drawing shows a sensor unit 2 for measurement together with a pulley 11 and a 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 includes a stay 3 attached to the pulley 11 of the belt system 1, a sensor unit 2, and a processing system 5. The stay 3 is provided with unique information storage means 4 that stores unique information of the pulley 11. The sensor unit 2 includes a state detection sensor 6 that measures a state quantity and the like of the pulley 11 and a reading device 7 that reads the unique information from the unique information storage unit 4. The processing system 5 is a device that processes information obtained by the sensor unit 2 and selects information for determination such as a predetermined processing method and determination criteria used for determining the state of the pulley 11 from the unique information read by the reading device 7. Then, using the selected determination information, the determination about the state in which the pulley 11 is determined from the measurement data output from the state detection sensor 6 and the determination on the state of the peripheral parts of the pulley 11 are performed. The stay 3 and the sensor unit 2 are installed in a 1: 1 relationship at the time of measurement, but the processing system 5 is wirelessly connected to the plurality of sensor units 2 and can process information of each sensor unit 2. . The processing system 5 may be composed of a single information processing device such as a computer. In this example, the processing system 5 is composed of an information terminal 8 and a data server 9 as shown in FIG.

  In FIG. 3, the pulley 11 includes a rolling bearing 12 fitted to the inner periphery of a pulley main body 11 a on which a belt 89 is hung, and is rotatably supported on the fixed shaft 13 by the rolling bearing 12. 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 this example, 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 race rings 12a and 12b. Yes. A component 14 that is a rotating portion 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 fixed to the outer surface of the component 14, and the center of the holding portion 3 a that holds the sensor unit 2 is located on the rotation center O of the rolling bearing 12.

The stay 3 has an outer shape composed of a short cylindrical seat portion 3b whose back side surface is joined to the rotating component 14, and a shaft-like holding portion 3a protruding from the center of the front side surface of the seat portion 3b. . The cross-sectional shape of the stay 3 may be any of a hollow shaft type, a semi-hollow shaft type, and a hollow non-type. The material of the stay 3 may be a synthetic resin or a metal. The stay 3 and the component 14 may be joined in any joining form such as a screw, an adhesive, magnetism, welding, a labyrinth shape, or a ring.
In the illustrated example, the holding portion 3a is such that the bottom surface 15a of the case 15 of the sensor unit 2 is in contact with the seat portion 3b of the stay 3, and the holding portion 3a is press-fitted into the mounting hole 16 provided on the bottom surface, or a screw, The sensor unit 2 is positioned and held by fitting in a magnetic or labyrinth shape.
Note that the stay 3 may be a stay integrated with the pulley 11 or the component 14 to be measured when it is difficult to attach the pulley 11 to the measurement position.

  In FIG. 3, the unique information storage means 4 is means for storing unique information unique to the pulley 11, and comprises an RFID, a one-dimensional barcode, a two-dimensional barcode, or the like. A QR code (registered trademark) is used as the two-dimensional barcode. The unique information may be unique information such as each pulley 11 included in the belt system 1, but may be basic information such as the stay 3 itself or the model number and serial number of each pulley 11. The location, the date of shipment, the type of the belt system 1 may be used, and the internal specifications of the component parts and the bearing, the use conditions thereof, and the like may be included. A plurality of unique information storage means 4 may be provided in one stay 3.

  In addition to the state detection sensor 6 and the reading device 7, 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). The state detection sensor 6 is a sensor that detects the state quantity of the pulley 11 and may be one. In this example, as shown in FIG. 2, a plurality of acceleration sensors 6a that perform vibration measurement, for example, and rotation detection are provided. A gyro sensor 6b serving as a sensor is provided. In addition, the state detection sensor 6 may have a temperature sensor (not shown).

In this embodiment, the state detection sensor 6 is an analog output sensor, and the measurement data is digitally converted by the A / D converter and output wirelessly. Note that the sensor unit 2 may output the measurement data in a wired manner as analog data and perform A / D conversion on the information terminal 8 (FIG. 5). A sensor that outputs a digital signal 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, it may be transmitted to the information terminal 8 by wire using a slip ring (not shown). The battery 19 may be of a battery type or a charging type, or may be supplied from a non-contact power supply or a slip ring without using a battery.

  The reading device 7 is a device that reads the contents stored in the unique information storage means 4 provided in the stay 3 in a non-contact manner or in contact with the unique information storage means 4, and the sensor unit 2 detects the state in the stay 3. The unique information storage means 4 is provided so as to be readable while being held in a state where it is possible. When the unique information storage unit 4 is read when the sensor unit 2 is assembled to the stay 3, the unique information storage unit 4 does not necessarily need to be readable in a state where the state can be detected. The reader 7 uses a tag reader when the unique information storage means 4 is an RFID, and uses a barcode reader when the unique information storage means 4 is a one-dimensional or two-dimensional barcode. The wireless communication device 18 adds identification data of the sensor unit 2 to the processing system 5 and transmits the read unique information together with the measurement data. 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 receives measurement data and unique information from each of the plurality of sensor units 2, accesses the data server 9 via the communication network 51, and transmits information. 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 that can receive data from the sensor unit 2 wirelessly or by wire, and is connected to a communication network 51 such as the Internet by another communication processing unit 21A. The communication processing unit 21A may be a unit that communicates wirelessly. The information terminal 8 displays related data on the screen 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 accesses, for example, the unique information, the past measurement data, the state determination result, and the like of each pulley 11 included in the belt system 1 to be measured from the data server 9 and can be viewed on the display device 23. The communication network 51 is a computer communication network such as the Internet, for example, and the related information can be browsed by a Web browser or the like.

  The terminal-side processing means 22 is configured by 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 is downloaded and installed from the data server 9, or a portable storage medium such as a CD or a DVD, or the data server 9 other than the data server 9 on the Internet constituting the communication network 51. Obtained from homepage, app site, etc. and installed. The OS (operation program) 24 of the information terminal 8 has such a function that can be downloaded and installed. On the screen of the display device 23, the terminal-side processing means 22 includes, as the related information, for example, unique information of the stay 3, measurement data of the sensor unit 2, state determination results and analysis results transmitted from the data server 9, etc. Is displayed.

  In addition to the above, the information terminal 8 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.
In brief, the data server 9 receives data from the information terminal 8 by the communication processing unit 36 and stores the state data in the information storage unit 31. A measurement site is determined from bearings, peripheral parts, vehicle information, and the like stored in the specification database 32. Using the information storage unit 31 and / or the specification database 32, signal processing conditions and determination information suitable for the pulley 11 to be measured are determined and analyzed by the data analysis unit 34. The analysis result is stored in the processing data storage unit 35, and the determination information is set or updated using the accumulated data for each part.

The pulley state determination unit 33a of the state determination unit 33 determines the state by comparing the analysis result with determination information such as a determination threshold value. Further, the pulley state determination unit 33a of the state determination unit 33 estimates the abnormality occurrence site using the information and analysis results of the bearings and peripheral parts in the specification database 32. The analysis result and the abnormality determination result are transferred to the information terminal 8 of the transmission source.
When determining a plurality of data, the pulley state determination unit 33a links past analysis data of the pulley 11 serving as a measurement target component or determination information such as a preset threshold value and each analysis result from individual information received in advance. Therefore, judgments such as comparison are made individually. Thereafter, comprehensive 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 state data of each pulley 11 that has performed state measurement, part history such as measurement results and data analysis results, a result output format, and the like. 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 equipped with a bearing serving as the target pulley 11, and the like. Further, a determination method for determining a state according to the type of the pulley 11, determination information such as a threshold value, or the like is stored in either the specification database 32 or the information storage unit 31.

The data analysis unit 34 performs signal processing of the measurement data and frequency analysis to make a signal that can easily determine the state such as abnormality determination. In this frequency analysis, in addition to vibration data, measured rotational speed data may be used.
The state determination unit 33 determines whether the belt system 1 is abnormal by comparing the analysis result of the data analysis unit 34 with past data or information for determination such as a preset threshold value.
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 specific information such as each pulley 11 included in the belt system 1 to be measured, past measurement data, state determination result, and the like. Can be viewed. For example, information of the data server 9 can be received from the communication processing unit 36 in the data server 9 via the communication network 51 and displayed. In this case, the communication processing unit 36 may perform access restriction with a registered display terminal 52 having authority, a password, or the like.
The communication processing unit 36 of the data server 9 basically transmits and displays the result of the state determination to the information terminal 8 that has transmitted the measurement data, but is registered in addition to the information terminal 8 that has transmitted the measurement data. It has a function of transmitting the result of state processing to the display terminal 52 having an address or the like. The display terminal 52 having the registered address or the like is, for example, a terminal of a predetermined business division 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 flowchart showing a case where the processing and operation performed by this state determination system are performed for one pulley 11 for the sake of simplicity.
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 (radio wave or the like) of unique information is transmitted from the sensor unit 2 to the stay 3, and the signal is incorporated in the stay 3. The unique information storage means 4 composed of the RFID reacts to transmit the 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, and the information storage unit 31 and the specification database 32 in the data server 9 determine the measurement target pulley from the unique information. 11 information (determination information, part history, past measurement data, etc.) is extracted, and the measurement data is signal-processed by the data analysis unit 34. The state determination unit 33 performs a determination by comparing the analysis result of the data analysis unit 34 with the extracted past data or preset determination information, and displays “abnormal” on the display terminal 52 in the case of abnormality. Signals and status determination result data are transmitted, and the user is contacted by telephone, e-mail, SNS or the like. Further, when there is no abnormality, a display signal of “no abnormality” and result data are transmitted to the display terminal 52.

  FIG. 9 is a flowchart showing the overall processing in the data server 9. The data server 9 receives a plurality of received data A, B, C... Z (measurement data, unique information, etc.) from the information terminal 8 simultaneously or in a preset order, and each sensor unit 2 (sensor unit A, B... The data storage unit 31 or the specification database 32 and the processing data storage unit 35 extract the stored data of the pulley 11 to be measured based on the unique information of the received data A, B, C. Further, the measurement data is signal-processed by the data analysis unit 34, and the determination result preset by the pulley state determination unit 33 a of the state determination unit 33 and the information storage unit 31 or the processing data storage unit 35 are extracted from the result. The abnormality determination of each sensor unit 2 is performed based on the past data (analysis result or the like).

  Here, when there is no abnormality in all the target sensor units 2, the result of “no abnormality” and analysis result data are transferred to the display terminal 52 and the information terminal 8. Process with. In the comprehensive determination, the abnormality determination sensor unit 2 is specified, and the information storage unit 31 or the processing data storage unit 35 is caused to extract information on the pulley 11 of the sensor unit 2, peripheral component information, and the like. The state determination is performed based on the measurement data, peripheral determination information set in advance, extracted past data, and the like. If there is no abnormality, the result of “no abnormality” and the analysis result data are transferred to the display terminal 52 and the information terminal 8, and if there is an abnormality, the result and analysis of “abnormal” to the display terminal 52 and the information terminal 8 Transfer the result data and contact other administrators and users.

An example of comprehensive determination taking into account the correlation between the measurement positions will be described. That is, it is a state determination including peripheral parts.
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, damage to a certain shaft may be transmitted through the belt 89 and affect measurement results at other parts. is there. 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 the multiple simultaneous determination according to this embodiment will be described.
It becomes 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 location 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. Thus, it is possible to identify an abnormal part 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 inspections of the laws and regulations, the business operators voluntarily set daily inspections and periodic inspections. It is general and requires a lot of inspection work, and the judgment criteria vary. This embodiment allows simultaneous and automatic state diagnosis, thereby reducing time and man-hours. Furthermore, big data is obtained by accumulating data, and comparison with past data and data of other vehicles and statistical processing are performed, so that it is possible to improve the accuracy of state determination and prevent failures and accidents.
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 the state of peripheral components (in-unit components such as a belt and an alternator) by performing simultaneous measurement and comprehensive determination taking into account the correlation of each axis.
Using the analysis results based on the bearing and peripheral component information in the specification database 32, the abnormality occurrence site is estimated and diagnostic result data is created.

Other effects and operation methods in this embodiment will be described.
The pulley 11 has the unique information storage means 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 identified from the unique information read by the sensor unit 2, and even if this state determination system is used for a plurality of pulleys 11, an input operation for identifying the pulley 11 is not required. Eliminate mistakes. For example, as described above, the sensor unit 2 is attached to each pulley 11 included in the desired belt system 1 to be measured, and a measurement start command is given by a switch or the like. Information for determination corresponding to each pulley 11 included in the belt system 1 to be measured can be selected, and determination regarding a predetermined state such as abnormality determination can be appropriately performed.
Since the sensor unit 2 is detachably attached to the pulley 11, unlike the conventional device in which a probe is attached each time, the reproducibility of the measurement result and the accuracy of the determination can be improved by improving the 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.

・ Especially when the stay 3 is permanently installed, 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 sensor cannot be attached to the fixed part of the vehicle bearing or its peripheral parts, which is the pulley 11 to be measured, by providing the stay 3, the movable part of the vehicle bearing or its peripheral parts can be The sensor unit 2 having a sensor capable of measuring the state can be mounted. It is possible to detect anomalies with high accuracy when measuring at a location as close as possible to a location where damage is a concern, such as a bearing, and it is more effective when measuring at multiple locations simultaneously.
Even when the sensor unit 2 is installed on the movable part, the measurement at the center of the movable part makes it difficult to be affected by disturbances and enables highly accurate measurement.
-By installing the identification information device on the stay 3, it becomes easy to grasp the measurement object and preparation for measurement in a short time is possible.
・ It becomes easy to accumulate data and search past data.
-By specifying the part to be measured, it is possible to set information for measurement according to the environment for each part, not for each bearing part number. In addition, high-accuracy determination can be performed in consideration of disturbance.
The information terminal 8 can handle from measurement setup to browsing of diagnosis results. The information terminal 8 may be a portable type such as a smartphone, and can be operated near the pulley 11 to be measured.
The information terminal 8 can perform processing such as selection of a part to be transferred to the data server 9. Access to the data server 9 allows registration, revision, etc. regarding the unique information of the stay 3 (vehicles, parts, correlation between each measurement part, exchange history, etc.). The data server 9 can be accessed to browse past measurement data, state diagnosis results, etc. of each measurement site. You can browse by list or selection formula, such as comparing results of multiple measurement sites.

  FIG. 7 shows a modified example of the installation relationship between the stay 3 and the sensor unit 2. Since the unique information storage means 4 is provided in the stay 3, the relationship between the stay 3 and the sensor unit 2 is free as shown in the figure, and there is no problem in the automatic determination of the pulley 11. Further, no matter which sensor unit 2 is attached to which pulley 11, high-precision measurement with small assembling error is possible. (No need to match sensor unit 2 and stay 3)

FIG. 10 shows another embodiment of the present invention. In the embodiment shown in FIGS. 1 to 9, data analysis and state determination are performed by the data server 9, but in the example of FIG. 10, data analysis and state determination are performed by the information terminal (information / display terminal) 8A. The information terminal 8A is an information / display terminal having an information display function.
Specifically, the processing system 5 includes the information terminal 8 and a data server 9 connected to the information terminal 8 through a communication network 51. The information terminal 8 receives the measurement data and the data from the sensor unit 2. It has a communication processing unit 21A that obtains unique information and transmits the unique information to the data server 9, a data analysis unit 44, and a state determination unit 43. The data server 9 uses the specification database 32 that stores the specification information of each pulley 11 included in the belt system 1 corresponding to the unique information, and the belt system 1 based on the unique information transmitted from the information terminal 8. A communication processing unit 36 that performs automatic identification of each included pulley 11 and selection of the specification information and transmits the information to the information terminal 8A. The data analysis unit 44 and the state determination unit 43 of the information terminal 8A include: The specification information transmitted from the data server 9 is used to perform analysis and determination of the state based on the measurement data obtained from the sensor unit 2. The state determination unit 43 has a function of determining the state of peripheral parts in the same manner as described above. That is, it has 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 been dramatically improved, and state determination processing such as abnormality determination with sufficient accuracy and processing speed Can be done. However, when the determination information such as threshold values and past data is used for a plurality of belt systems 1, the amount of data becomes enormous and is difficult to store in the information terminal 8A at hand and is wasteful. 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, and the information terminal 8A determines its state. By performing only the above processing, it is possible to effectively use the advanced processing function of the information terminal 8A, and to determine the state while reducing the burden on the data server 9 and the usage cost of the data server 9.

Also in this embodiment, the data server 9 includes the state data obtained by measuring the state of each pulley 11 included in the belt system 1, the determination result, the component history of the data analysis result, and the like included in the belt system 1. An information storage unit 31 that stores the history information of the pulley 11 and the like is provided, and the data server 9 has a function of performing the state determination using the history information of the belt system 1.
Even if the state determination such as abnormality determination is performed by the determination information determined from the machine part specifications for each type of each pulley 11 included in the belt system 1 and the state is normal, the past determination information about the individual is used. If judged, it may become abnormal, and vice versa. Therefore, by performing state determination based on history information in addition to state determination by type and performing a comprehensive determination unit from the results of both determinations, the accuracy of determination such as abnormality determination is improved.
Other configurations and effects are the same as those of the first embodiment shown in FIGS.
The data server 9 has a function of performing the data analysis and the determination of the state as in the embodiments of FIGS. 1 to 9, and the information terminal 8 performs 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 8 or the data server 9.

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

1: Belt system 2: Sensor unit 3: Stay 4: Specific information storage means 5: Processing system 6: State detection sensor 7: Reading device 8: Information terminal 9: Data server 11: Pulley 12: Rolling bearing 21: Communication device 31 : Information storage unit 32: specification database 33: state determination unit 33a: pulley state determination unit 33b: peripheral component state determination unit 34: data analysis unit 35: data storage unit 36: communication processing unit 51: communication network 52.

Claims (8)

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,
Unique information storage means provided on the plurality of pulleys and indicating unique information of the pulleys;
A sensor unit that is detachably attached to the pulley and has a state detection sensor that measures the state of the pulley and a reading device that reads the unique information from the unique information storage unit; and the sensor unit that has read the read information. A processing system for selecting determination information used for determining the state of the pulley from the unique information and determining the state of the pulley from the measurement data output by the state detection sensor using the selected determination information;
A state determination system for a belt system comprising:   2. The state determination system for a belt system according to claim 1, wherein the processing system determines a state of a peripheral part common to the plurality of pulleys based on a result of the state determination for the plurality of pulleys. A belt system state determination system having a state determination unit.   3. The state determination system for a belt system according to claim 1, wherein the pulley has a rolling bearing.   The belt system state determination 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. system.   5. The belt system state determination system according to claim 1, wherein the pulley includes a stay that detachably holds the sensor unit, and the unique information storage unit is provided in the stay. 5. A state determination system for the belt system provided.   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. The information terminal obtains the specific information and the measurement data from the sensor unit and transmits them to the data server, and the data server determines the state of the belt system. system.   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. A data server connected to the information terminal, wherein the information terminal obtains the unique information and the measurement data from the sensor unit and transmits the unique information to the server, and the data server transmits the data server. A belt system state determination system having a function of performing determination on the state using determination information, wherein the data server has a function of selecting the determination information from the unique information and transmitting the information to the information terminal.   The belt system state determination system according to any one of claims 1 to 8, wherein the belt system is installed in a vehicle traveling on a road.

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