JP7414342B2 - Belt conveyor monitoring device, belt conveyor monitoring method, and program - Google Patents

Description

The present disclosure relates to a belt conveyor monitoring system, a belt conveyor monitoring device, a belt conveyor monitoring method, and a program.

In steelworks, raw materials such as steel ore, sintered ore, limestone, and coke are often transported by ship. Therefore, it is necessary to transport raw materials loaded on ships to raw material factories, blast furnaces, etc. A belt conveyor is used to transport the raw materials.

However, the raw material transportation area of a steelworks covers a wide range of several kilometers. Further, the conveyance direction of a general belt conveyor is limited to a straight line. Therefore, a combination of multiple belt conveyors is used in the raw material conveyance area.

Here, with reference to FIG. 1, an example of the arrangement of belt conveyors BC in a raw material conveyance area of a steelworks will be described. FIG. 1 corresponds to a view of the raw material conveyance area viewed from above. In the example shown in FIG. 1, a plurality of belt conveyors BC are arranged in series in the same conveyance direction or in conveyance directions substantially orthogonal to each other. Moreover, in the example shown in FIG. 1, two rows of belt conveyors BC arranged in parallel are made into one set, and the belt conveyors BC are connected. Note that there are cases where three or more rows of belt conveyors BC are connected as one set, and there are cases where a single belt conveyor BC is connected.

Next, a configuration example of the belt conveyor BC will be described with reference to FIGS. 2 and 3. As shown in FIGS. 2 and 3, the belt conveyor BC includes a driving pulley Px, a driven pulley Py, and an endless conveyor belt B wound around the driving pulley Px and the driven pulley Py. It has become.

The drive pulley Px is a pulley that is rotationally driven by a motor (not shown). The driven pulley Py is a pulley that rotates in a driven manner. There are various types of driven pulley Py, such as a snap pulley that adjusts the angle at which the conveyor belt B is wrapped around the drive pulley Px, a tension pulley that tensions the conveyor belt B, and a bend pulley that changes the angle of the conveyor belt B. Not mentioned. Hereinafter, the driving pulley Px and the driven pulley Py will be collectively referred to as a pulley P.

Next, an example of the configuration of the drive pulley Px and its surroundings will be described with reference to FIG. 4. As shown in FIG. 4, the drive pulley Px includes a shaft SH and a cylindrical portion T that is fitted onto the shaft SH, and a conveyor belt B is wound around the outer periphery of the cylindrical portion T. The shaft SH of the drive pulley Px is rotatably supported by bearings BE at both ends thereof. Furthermore, a speed increaser SP and a motor M are connected to one end of the shaft SH of the drive pulley Px via a coupling member C. Motor M rotationally drives drive pulley Px via shaft SH. At this time, the rotation of the motor M is increased in speed by the speed increaser SP. The motor M and the speed increaser SP receive power from the generator G and perform the above operations.
Note that the configuration of the driven pulley Py and its surroundings is, for example, the configuration shown in FIG. 4 except that the generator G, motor M, speed increaser SP, and coupling member C are removed.

Here, since the pulley P is always subjected to the tension of the conveyor belt B in the radial direction, the bearing BE that supports the shaft SH of the pulley P is always under a strong load. Therefore, the bearing BE is a component that is more easily damaged and prone to failure than other components. For example, assume that the bearing BE is a rolling bearing that includes an inner ring IR, an outer ring OR, and rolling elements R, as shown in FIG. In this case, inner flaws occurring in the inner ring IR, outer flaws occurring in the outer ring OR, etc. become causes of failure of the bearing BE. Furthermore, an insufficient amount of grease injected into the bearing BE may also cause failure.

Therefore, belt conveyors are often monitored with particular emphasis on bearings. Furthermore, conventionally, bearings are often monitored by trained maintenance personnel. Specifically, maintenance personnel can hear the operating sound of a bearing in its normal state, as well as its failure state (for example, the state in which inner flaws have occurred, the state in which outer flaws have occurred, and the amount of grease injected. Receive training in using a listening stick to distinguish between operating sounds (such as insufficient conditions) and operating sounds. When the maintenance personnel monitor the belt conveyor, they go around the belt conveyor, listen to the operating sounds of the bearings using a listening rod, and judge the condition of the bearings. If it is determined that the bearing has failed, either the bearing is replaced, or the entire pulley including the bearing and its surrounding components are replaced.

However, when a belt conveyor is monitored by a maintenance worker, the judgment of the condition tends to vary depending on the number of maintenance workers. As a result, maintenance personnel with low experience may judge a bearing that does not need to be replaced to be faulty, or judge a bearing that needs to be replaced to be normal.

Furthermore, although belt conveyors are regularly monitored by maintenance personnel, there is a demand for more frequent monitoring of belt conveyors installed at particularly important locations. However, if the frequency of monitoring by maintenance personnel increases, there is also concern that maintenance costs will increase.

Therefore, recently, techniques have been proposed for monitoring belt conveyors online. For example, in the technique described in Patent Document 1, a data collection device is provided for each belt conveyor or a plurality of belt conveyors, and a vibration acceleration sensor is provided to detect vibration acceleration generated in a bearing of a pulley that constitutes the belt conveyor. The data collection device collects vibration acceleration data detected by the vibration acceleration sensor and wirelessly transmits the data to the diagnosis server. The diagnostic server diagnoses abnormalities and deterioration of the belt conveyor based on vibration acceleration data.

JP2010-208850A

By the way, as mentioned above, the raw material transportation area of a steelworks extends over a wide range of several kilometers. Therefore, many belt conveyors are installed in the raw material conveyance area, and accordingly, the number of pulleys to be monitored becomes enormous.

However, in the technology described in Patent Document 1, the pulley vibration acceleration data that the data collection device wirelessly transmits to the diagnosis server is a time-series analog vibration acceleration signal, and the amount of data is extremely large. Conceivable.

Therefore, when transmitting a huge number of pulley vibration acceleration data wirelessly to a diagnostic server, data such as a time-series analog vibration acceleration signal can be used as the vibration acceleration data, as in the technology described in Patent Document 1. Transmitting a large amount of data may put pressure on the communication band of the wireless network. Furthermore, if the communication band of the wireless network is compressed, there is a risk that communication delays or communication failures may occur.

Therefore, the purpose of the present disclosure is to provide a belt conveyor monitoring system and belt conveyor monitoring system that can solve the above-mentioned problems and suppress pressure on the communication band of a wireless network when wirelessly transmitting data on the vibration acceleration of a pulley. The purpose of the present invention is to provide a device, a belt conveyor monitoring method, and a program.

A belt conveyor monitoring system according to one aspect includes:
a vibration acceleration sensor installed on a bearing of a pulley constituting a belt conveyor and detecting vibration acceleration generated in the bearing of the pulley;
The vibration acceleration sensor is connected, collects vibration acceleration data detected in time series by the vibration acceleration sensor, and calculates a vibration acceleration characteristic value representing the characteristics of the vibration acceleration data within a certain period of time collected; a monitoring device that wirelessly transmits the calculated vibration acceleration characteristic value;
a host device that wirelessly receives the vibration acceleration characteristic value wirelessly transmitted from the monitoring device and determines the state of the pulley using the vibration acceleration characteristic value;
Equipped with

A belt conveyor monitoring device according to one aspect includes:
A belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting a belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a collection unit that collects data of vibration acceleration detected in time series by the vibration acceleration sensor;
a calculation unit that calculates a vibration acceleration characteristic value representing the characteristics of vibration acceleration data within a certain period collected by the collection unit;
a communication unit that wirelessly transmits the vibration acceleration characteristic value calculated by the calculation unit to a host device;
Equipped with

A belt conveyor monitoring method according to one aspect includes:
A belt conveyor monitoring method using a belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley, the method comprising:
collecting data of vibration acceleration detected in time series by the vibration acceleration sensor;
calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
including.

A program according to one aspect includes:
A belt conveyor monitoring device connected to a vibration acceleration sensor installed on a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a step of collecting data of vibration acceleration detected in time series by the vibration acceleration sensor;
a step of calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
a step of wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
This is a program to run.

According to the above-described aspect, there is provided a belt conveyor monitoring system, a belt conveyor monitoring device, a belt conveyor monitoring method, and a program that can suppress pressure on the communication band of a wireless network when wirelessly transmitting data on vibration acceleration of a pulley. The effect is that it can be provided.

It is a figure showing an example of arrangement of a belt conveyor in a raw material conveyance area of a steelworks. It is a figure showing an example of composition of a belt conveyor. It is a figure which shows the other example of a structure of a belt conveyor. It is a figure showing an example of composition of a drive pulley and its periphery. FIG. 3 is a diagram showing an example of inner flaws and outer flaws that occur in a rolling bearing. 1 is a diagram showing a configuration example of a belt conveyor monitoring system according to Embodiment 1. FIG. It is a figure which shows the example of a structure of the connection part of two belt conveyors. 1 is a block diagram showing a configuration example of a belt conveyor monitoring device according to Embodiment 1. FIG. FIG. 3 is a diagram showing an example of a vibration acceleration sensor management table held by the belt conveyor monitoring device according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of a host device according to Embodiments 1 and 2. FIG. FIG. 2 is a sequence diagram showing an example of the operation of the belt conveyor monitoring system according to the first embodiment. FIG. 3 is a diagram illustrating a configuration example of a belt conveyor monitoring system according to a second embodiment. FIG. 2 is a block diagram showing a configuration example of a belt conveyor monitoring device according to a second embodiment. 7 is a diagram showing an example of a current sensor management table held by the belt conveyor monitoring device according to Embodiment 2. FIG. 7 is a sequence diagram showing an example of the operation of the belt conveyor monitoring system according to Embodiment 2. FIG.

Embodiments of the present disclosure will be described below with reference to the drawings. Note that in the embodiment described below, it is assumed that the belt conveyor to be monitored has the configuration described using FIGS. 1 to 5, but the configuration of the belt conveyor is not limited to this. Further, although the belt conveyor to be monitored is described as conveying raw materials, the present invention is not limited to this, and the belt conveyor may be any conveyor as long as it conveys any material.

<Embodiment 1>
First, with reference to FIG. 6, a configuration example of the belt conveyor monitoring system 1 according to the first embodiment will be described.
As shown in FIG. 6, the belt conveyor monitoring system 1 according to the first embodiment includes vibration acceleration sensors SA-1 to SA-N (N is an integer of 2 or more), a belt conveyor monitoring device 10, and an upper A device 20 is provided.

In addition, in FIG. 6, in order to simplify the explanation, only one belt conveyor monitoring device 10 is provided, but normally, a plurality of belt conveyor monitoring devices 10 are provided. Further, hereinafter, unless it is specified which vibration acceleration sensor SA-1 to SA-N it is, it will be referred to as vibration acceleration sensor SA.

The vibration acceleration sensor SA is connected to a bearing BE (see FIG. 4) of a pulley P (see FIGS. 2, 3, etc.; the pulley P includes a driving pulley Px and a driven pulley Py) that constitutes a belt conveyor BC (see FIG. 1, etc.). This sensor is installed in the bearing BE of the installed pulley P and detects the vibration acceleration generated in the bearing BE of the installed pulley P. The vibration acceleration sensors SA are installed in bearings BE at both ends of the pulley P, respectively. Therefore, two vibration acceleration sensors SA are installed for one pulley P.

Note that the correspondence relationship between the belt conveyor BC, the belt conveyor monitoring device 10, and the vibration acceleration sensors SA-1 to SA-N may be, for example, the following relationship. That is, one belt conveyor monitoring device 10 is provided for one belt conveyor BC. The vibration acceleration sensors SA installed on the bearings BE of the pulleys P constituting the belt conveyor BC become vibration acceleration sensors SA-1 to SA-N.

However, the correspondence relationship among the belt conveyor BC, the belt conveyor monitoring device 10, and the vibration acceleration sensors SA-1 to SA-N is not limited to the above relationship.
For example, vibration acceleration sensors SA-1 to SA-N include not only vibration acceleration sensors SA installed on pulleys P of the same belt conveyor BC, but also vibration acceleration sensors SA installed on pulleys P of separate belt conveyors BC. May be included. For example, when providing a plurality of belt conveyors BC, suppose that belt conveyors BC1 and BC2 are installed in series, as shown in FIG. In this case, the vibration acceleration sensor SA installed on the drive pulley Px1 of the belt conveyor BC1 and the vibration acceleration sensor SA installed on the drive pulley Px2 of the belt conveyor BC2 are included in the vibration acceleration sensors SA-1 to SA-N. It's okay if it is.

The belt conveyor monitoring device 10 is connected to vibration acceleration sensors SA-1 to SA-N, and monitors vibration acceleration detected by the connected vibration acceleration sensors SA-1 to SA-N.
The host device 20 determines the state of the pulley P using the vibration acceleration monitoring result monitored by the belt conveyor monitoring device 10.

However, the belt conveyor monitoring device 10 and the host device 20 are installed at positions separated from each other. Therefore, the belt conveyor monitoring device 10 wirelessly transmits the vibration acceleration monitoring results to the host device 20.

However, since the vibration acceleration sensor SA detects the vibration acceleration generated in the bearing BE of the pulley P in a time series, the vibration acceleration data obtained from the vibration acceleration sensor SA is analog data of the vibration acceleration in a time series. , the amount of data is extremely large. Moreover, since many belt conveyors BC are installed in the raw material conveyance area, the number of pulleys P that constitute the belt conveyor BC also becomes enormous. Furthermore, the number of belt conveyor monitoring devices 10 also increases.

Therefore, in the belt conveyor monitoring device 10, if vibration acceleration data obtained from the vibration acceleration sensor SA is wirelessly transmitted as is to the host device 20 without being processed, the communication band of the wireless network may be compressed. Furthermore, if the communication band of the wireless network is compressed, there is a risk that communication delays or communication failure may occur.

Therefore, in the first embodiment, the belt conveyor monitoring device 10 calculates a vibration acceleration characteristic value representing the characteristics of the vibration acceleration data for a certain period from the vibration acceleration data for a certain period detected by the vibration acceleration sensor SA. is calculated, and the calculated vibration acceleration characteristic value is wirelessly transmitted to the host device 20. This suppresses pressure on the communication band of the wireless network.

Here, with reference to FIG. 8, a configuration example of the belt conveyor monitoring device 10 according to the first embodiment will be described in detail.
As shown in FIG. 8, the belt conveyor monitoring device 10 according to the first embodiment includes a processor 11, a communication module 12, a memory 13, a DC (Direct Current) power supply module 14, and an input/output I/F (Interface) module. 15, and a vibration acceleration sensor I/F module 16.

The vibration acceleration sensor I/F module 16 is a module that serves as an interface to which the vibration acceleration sensors SA-1 to SA-N are connected.
The input/output I/F module 15 is a module that can be connected to an input device such as a touch panel, a switch, a microphone, etc., and also connectable to an output device such as a display device, a speaker, etc.

The DC power supply module 14 is a module that is supplied with DC power from the outside and supplies DC power supply voltage to each component within the belt conveyor monitoring device 10. Note that the DC power supply module 14 also supplies DC power supply voltage to the vibration acceleration sensors SA-1 to SA-N via the vibration acceleration sensor I/F module 16.

In the first embodiment, it is assumed that the DC power module 14 receives DC power from a generator G that supplies DC power to a motor M (see FIG. 4, etc.) that rotationally drives a drive pulley Px. Therefore, only when the belt conveyor BC is in operation receiving DC power from the generator G, the belt conveyor monitoring device 10 and the vibration acceleration sensors SA-1 to SA-N also receive the DC power from the generator G. Receives supplies and becomes operational.

The communication module 12 is a module that performs wireless communication with the host device 20, and is an example of a communication unit. For example, the communication module 12 wirelessly transmits, to the host device 20, a vibration acceleration characteristic value representing the characteristics of vibration acceleration data for a certain period detected by the vibration acceleration sensor SA. Note that the communication module 12 may perform wireless communication in a 2.4 GHz band, a 5.5 GHz band, or a 920 MHz band using a wireless LAN (Local Area Network). Further, the communication module 12 may perform wireless communication directly with the host device 20, or may perform wireless communication with the host device 20 through multi-hop communication via another belt conveyor monitoring device 10.

The processor 11 is, for example, a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). The memory 13 is, for example, a RAM (Random Access Memory) or a ROM (Read Only Memory).

For example, the memory 13 stores programs to be executed by the processor 11. The processor 11 executes a program stored in the memory 13 to realize the functions of a collection unit 111 and a calculation unit 112, which will be described later, and also controls the communication module 12.

Additionally, the programs described above can be stored and provided to a computer using various types of non-transitory computer readable media. Non-transitory computer-readable media includes various types of tangible storage media. Examples of non-transitory computer-readable media are magnetic recording media (e.g., flexible disks, magnetic tape, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Compact Disc-Read Only Memory). , CD-R (CD-Recordable), CD-R/W (CD-ReWritable), semiconductor memory (e.g., mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory) )including. The program may also be supplied to the computer on various types of transitory computer readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can provide the program to the computer via wired communication channels, such as electrical wires and fiber optics, or wireless communication channels.

Furthermore, the memory 13 stores various data and information in addition to storing the above-mentioned programs. For example, the memory 13 stores a vibration acceleration sensor management table that manages vibration acceleration sensors SA-1 to SA-N connected to the vibration acceleration sensor I/F module 16. As shown in FIG. 9, the vibration acceleration sensor management table includes the identifiers of each of the vibration acceleration sensors SA-1 to SA-N connected to the vibration acceleration sensor I/F module 16, and the vibration acceleration sensor SA installed in the vibration acceleration sensor I/F module 16. This is a table in which the identifiers of the pulleys P and the identifiers of the belt conveyors BC made up of the pulleys P are stored in association with each other.

The collection unit 111 collects vibration acceleration data detected in time series by each of the vibration acceleration sensors SA-1 to SA-N connected to the vibration acceleration sensor I/F module 16.

The calculation unit 112 calculates a vibration acceleration characteristic value representing the characteristics of vibration acceleration data collected by the collection unit 111 within a certain period of time. Here, it is assumed that the fixed period is a fixed period immediately after the belt conveyor BC starts operating, during which the belt conveyor BC is considered not to be transporting raw materials. Further, the vibration acceleration characteristic value may be any value as long as it represents the characteristics of vibration acceleration data within a certain period of time. For example, the vibration acceleration characteristic value may be an average value or an effective value of vibration acceleration data within a certain period of time, but is not limited to these.

The communication module 12 wirelessly transmits the vibration acceleration characteristic value calculated by the calculation unit 112 to the host device 20. At this time, the communication module 12 refers to the vibration acceleration sensor management table stored in the memory 13, and identifies the identifier of the pulley P associated with the vibration acceleration sensor SA that detected the vibration acceleration that is the basis of the vibration acceleration characteristic value. The identifier of the belt conveyor BC is wirelessly transmitted to the host device 20 together with the vibration acceleration characteristic value. Thereby, the host device 20 can specify which vibration acceleration characteristic value is the characteristic value of the vibration acceleration generated in which pulley P of which belt conveyor BC.

Next, a configuration example of the host device 20 according to the first embodiment will be described in detail with reference to FIG. 10.
As shown in FIG. 10, the host device 20 according to the first embodiment includes a processor 21, a communication module 22, a memory 23, a DC power supply module 24, and an input/output I/F module 25.

The input/output I/F module 25 is a module that can be connected to an input device such as a touch panel, a switch, a microphone, etc., and also connectable to an output device such as a display device, a speaker, etc.
The DC power supply module 24 is a module that is supplied with DC power from the outside and supplies DC power supply voltage to each component within the host device 20.

The communication module 22 is a module that performs wireless communication with the belt conveyor monitoring device 10. For example, the communication module 22 wirelessly receives the vibration acceleration characteristic value wirelessly transmitted from the belt conveyor monitoring device 10. At this time, the communication module 22 also wirelessly receives the identifier of the pulley P and the identifier of the belt conveyor BC, which are wirelessly transmitted together with the vibration acceleration characteristic value from the belt conveyor monitoring device 10. Note that the wireless system of the communication module 22 may be the same as that of the communication module 12 in the belt conveyor monitoring device 10.

The processor 21 is, for example, a processor such as a CPU or a GPU. Further, the memory 23 is, for example, a memory such as a RAM or a ROM.
For example, the memory 23 stores programs to be executed by the processor 21. The processor 21 executes a program stored in the memory 23 to realize the functions of the determination unit 211, which will be described later, and also controls the communication module 22. Note that the above-mentioned program, like the program of the belt conveyor monitoring device 10, may be stored using a non-transitory computer-readable medium and supplied to the computer, or may be supplied to the computer using a temporary computer-readable medium. It's okay to be.

The determining unit 211 determines the state of the pulley P using the vibration acceleration characteristic value wirelessly received by the communication module 22. At this time, the determination unit 211 determines which belt conveyor BC the vibration acceleration characteristic value constitutes, using the pulley P identifier and the belt conveyor BC identifier wirelessly received together with the vibration acceleration characteristic value by the communication module 22. The characteristic value of the vibration acceleration generated in which pulley P is specified.

Note that the determining unit 211 can determine the state of the pulley P using any method using the vibration acceleration characteristic value. For example, the determining unit 211 stores in the memory 23 a table that associates the vibration acceleration characteristic value with the state of the pulley P, and compares the wirelessly received vibration acceleration characteristic value with this table. One possible method is to determine the state of P. However, this method is an example of a method for determining the state of the pulley P, and is not limited thereto.

Further, when determining that the pulley P is in a malfunctioning state or in a state where there is a risk of a malfunction, the determination unit 211 may output a monitoring instruction so that a maintenance person should go to monitor the pulley P. For example, this monitoring instruction may be displayed and output together with the identifier of the pulley P via a display device connected to the input/output I/F module 25, or a speaker connected to the input/output I/F module 25. It is conceivable to output audio via the

Next, with reference to FIG. 11, the operation sequence of the belt conveyor monitoring system 1 according to the first embodiment will be described.
As shown in FIG. 11, in the belt conveyor monitoring device 10, first, the collection unit 111 uses the vibration acceleration sensor SA installed on the bearing of the pulley P, which is connected to the vibration acceleration sensor I/F module 16. Data on vibration acceleration detected in series is collected (step S101).
Subsequently, the calculation unit 112 calculates a vibration acceleration characteristic value representing the characteristics of the vibration acceleration data within a certain period collected by the collection unit 111 (step S102).

Subsequently, the communication module 12 wirelessly transmits the vibration acceleration characteristic value calculated by the calculation unit 112 to the host device 20 (step S103). At this time, the communication module 12 wirelessly transmits the identifier of the pulley P and the identifier of the belt conveyor BC to the host device 20 together with the vibration acceleration characteristic value.

In the host device 20, first, the communication module 22 wirelessly receives the vibration acceleration characteristic value wirelessly transmitted from the belt conveyor monitoring device 10 (step S104). At this time, the communication module 22 wirelessly receives the identifier of the pulley P and the identifier of the belt conveyor BC together with the vibration acceleration characteristic value from the belt conveyor monitoring device 10.

After that, the determining unit 211 determines the state of the pulley P using the vibration acceleration characteristic value wirelessly received by the communication module 22 (step S105). At this time, the determination unit 211 determines which belt conveyor BC the vibration acceleration characteristic value constitutes, using the pulley P identifier and the belt conveyor BC identifier wirelessly received together with the vibration acceleration characteristic value by the communication module 22. The characteristic value of the vibration acceleration generated in which pulley P is specified.

As described above, according to the first embodiment, the belt conveyor monitoring device 10 collects vibration acceleration data detected in time series by the vibration acceleration sensor SA installed on the bearing of the pulley P. A vibration acceleration feature value representing the characteristics of vibration acceleration data within a certain period of time is calculated, and the calculated vibration acceleration feature value is wirelessly transmitted to the host device 20. The host device 20 determines the state of the pulley P using the vibration acceleration characteristic value wirelessly transmitted from the belt conveyor monitoring device 10.

That is, according to the first embodiment, the belt conveyor monitoring device 10 does not wirelessly transmit the vibration acceleration data obtained from the vibration acceleration sensor SA as it is without processing it, but instead transmits the vibration acceleration data for a certain period of time. The vibration acceleration characteristic value representing the characteristic of is wirelessly transmitted. As a result, vibration acceleration characteristic values with a significantly reduced amount of data are transmitted from the belt conveyor monitoring device 10 to the host device 20. Therefore, even if a huge number of vibration acceleration characteristic values of the pulley P are transmitted to the host device 20, the amount of data for each vibration acceleration characteristic value is small, so the communication band of the wireless network is prevented from being compressed. Ru. As a result, occurrences of communication delays and communication failures due to communication band compression are also suppressed.

Further, according to the first embodiment, the host device 20 determines the state of the pulley P using the vibration acceleration characteristic value wirelessly transmitted from the belt conveyor monitoring device 10. Therefore, the belt conveyor BC can be monitored online.

Further, according to the first embodiment, when the host device 20 determines that the pulley P is in a malfunctioning state or in a state in which there is a risk of a malfunction, the host device 20 issues a monitoring instruction for a maintenance person to go to monitor the pulley P. You can also output it. Thereby, it becomes possible to combine online monitoring and monitoring by maintenance personnel, and it is possible to improve the accuracy of determining the state of the pulley P. Furthermore, maintenance personnel only need to perform monitoring when the host device 20 determines that the pulley P has failed or is at risk of failure, which reduces the frequency of monitoring by maintenance personnel and reduces maintenance costs.

<Embodiment 2>
First, with reference to FIG. 12, a configuration example of a belt conveyor monitoring system 1A according to the second embodiment will be described.
As shown in FIG. 12, the belt conveyor monitoring system 1A according to the second embodiment is different from the belt conveyor monitoring system 1 according to the first embodiment shown in FIG. The difference is that SB-M (M is an integer of 1 or more) is added and that the belt conveyor monitoring device 10 is changed to a belt conveyor monitoring device 10A.
Note that, hereinafter, unless it is specified which current sensor SB-1 to SB-M it is, it will be referred to as current sensor SB.

The current sensor SB rotates the drive pulley Px among the pulleys P (see FIGS. 2 and 3, etc.; the pulley P includes a drive pulley Px and a driven pulley Py) that constitute the belt conveyor BC (see FIG. 1, etc.). This sensor is installed on a driving motor M (see FIG. 4, etc.) and detects the driving current supplied to the installed motor M. One current sensor SB is installed for the drive pulley Px.

Note that the correspondence relationship between the belt conveyor BC, the belt conveyor monitoring device 10A, the vibration acceleration sensors SA-1 to SA-N, and the current sensors SB-1 to SB-M may be, for example, the following relationship. . That is, one belt conveyor monitoring device 10A is provided for one belt conveyor BC. The vibration acceleration sensors SA installed on the bearings BE of the pulleys P constituting the belt conveyor BC become vibration acceleration sensors SA-1 to SA-N. Further, the current sensors SB installed on the motor M that rotationally drives the drive pulley Px constituting the belt conveyor BC are current sensors SB-1 to SB-M.

However, the correspondence relationships among the belt conveyor BC, the belt conveyor monitoring device 10A, the vibration acceleration sensors SA-1 to SA-N, and the current sensors SB-1 to SB-M are not limited to the above relationship.
For example, when providing a plurality of belt conveyors BC, suppose that belt conveyors BC1 and BC2 are installed in series, as shown in FIG. In this case, the current sensor SB installed on the motor M that rotationally drives the drive pulley Px1 of the belt conveyor BC1 and the current sensor SB installed on the motor M that rotationally drives the drive pulley Px2 of the belt conveyor BC2 are the current sensors. It may be included in SB-1 to SB-M.

Here, the data of the drive current detected by the current sensor SB differs depending on the state of the belt conveyor BC. For example, the drive current data differs depending on whether or not the belt conveyor BC is conveying raw materials. Furthermore, the data on the drive current differs depending on whether slip has occurred on the belt conveyor BC.

Therefore, by using the drive current data, the host device 20 can determine whether or not the belt conveyor BC is transporting raw materials, and whether or not a slip has occurred on the belt conveyor BC. Therefore, when the host device 20 is in a specific state such as when the belt conveyor BC is transporting raw materials or when a slip has occurred on the belt conveyor BC, the vibration acceleration characteristic value at that time is It is possible to select not to perform state determination of the pulley P by determining that the pulley P is affected by slippage or slippage. Therefore, although it is assumed that vibration acceleration characteristic values for a certain period immediately after the belt conveyor BC starts operating are wirelessly transmitted to the host device 20, it is preferable that drive current data is also wirelessly transmitted.

However, since the current sensor SB detects in time series the drive current supplied to the motor M that rotationally drives the drive pulley Px, the drive current data obtained from the current sensor SB is the analog data of the drive current in time series. The amount of data is extremely large. Moreover, since many belt conveyors BC are installed in the raw material conveyance area, the number of drive pulleys Px that constitute the belt conveyor BC also becomes enormous. Furthermore, the number of belt conveyor monitoring devices 10A also increases.

Therefore, in the belt conveyor monitoring device 10A, if the driving current data obtained from the current sensor SB is wirelessly transmitted as it is to the host device 20 without being processed, the communication band of the wireless network may be compressed. Furthermore, if the communication band of the wireless network is compressed, there is a risk that communication delays or communication failure may occur.

Therefore, in the second embodiment, the belt conveyor monitoring device 10A calculates a drive current characteristic value representing the characteristics of the drive current data for a certain period from the drive current data for a certain period detected by the current sensor SB. The calculated drive current characteristic value is wirelessly transmitted to the host device 20. This suppresses pressure on the communication band of the wireless network.

Here, with reference to FIG. 13, a configuration example of the belt conveyor monitoring device 10A according to the second embodiment will be described in detail.
As shown in FIG. 13, the belt conveyor monitoring device 10A according to the second embodiment has a current sensor I/F module, compared to the belt conveyor monitoring device 10 according to the first embodiment shown in FIG. The difference is that 17 is added.
The current sensor I/F module 17 is a module that serves as an interface to which the current sensors SB-1 to SB-M are connected.

The configuration other than the above is the same as that of the first embodiment. However, among the components of the belt conveyor monitoring device 10A, the memory 13, the collection section 111, the calculation section 112, and the communication module 12 operate differently from those in the first embodiment. Therefore, the operations of the memory 13, the collection section 111, the calculation section 112, and the communication module 12 will be described below.

The memory 13 further stores a current sensor management table that manages the current sensors SB-1 to SB-M connected to the current sensor I/F module 17. As shown in FIG. 14, the current sensor management table stores the identifiers of each of the current sensors SB-1 to SB-M connected to the current sensor I/F module 17 and the motor M on which the current sensor SB is installed. This is a table in which the identifier of the driving pulley Px that is rotationally driven and the identifier of the belt conveyor BC constituted by the driving pulley Px are stored in association with each other.

The collection unit 111 further collects data on drive currents detected in time series by each of the current sensors SB-1 to SB-M connected to the current sensor I/F module 17.

The calculation unit 112 further calculates a drive current characteristic value representing the characteristics of the drive current data collected by the collection unit 111 within a certain period of time. Here, the drive current characteristic value may be any value as long as it represents the characteristics of drive current data within a certain period. For example, the drive current characteristic value may be an average value or an effective value of drive current data within a certain period of time, but is not limited to these.

The communication module 12 further wirelessly transmits the drive current characteristic value calculated by the calculation unit 112 to the host device 20. At this time, the communication module 12 refers to the current sensor management table stored in the memory 13, and identifies the identifier of the drive pulley Px associated with the current sensor SB that detected the drive current that is the basis of the drive current characteristic value, and the belt The identifier of the conveyor BC is wirelessly transmitted to the host device 20 together with the drive current characteristic value. Thereby, the host device 20 can specify that the drive current characteristic value is the characteristic value of the drive current of the motor M that constitutes which belt conveyor BC and rotationally drives which drive pulley Px. Note that the drive current characteristic value may be wirelessly transmitted simultaneously with the vibration acceleration characteristic value, or may be wirelessly transmitted separately from the vibration acceleration characteristic value.

Further, the configuration itself of the host device 20 according to the second embodiment is similar to the host device 20 according to the first embodiment shown in FIG. However, among the components of the host device 20, the communication module 22 and the determination unit 211 operate differently from those in the first embodiment. Therefore, the operations of the communication module 22 and the determination unit 211 will be explained below.

The communication module 22 further wirelessly receives the driving current characteristic value wirelessly transmitted from the belt conveyor monitoring device 10A. At this time, the communication module 22 also wirelessly receives the identifier of the drive pulley Px and the identifier of the belt conveyor BC, which are wirelessly transmitted together with the drive current characteristic value from the belt conveyor monitoring device 10A.

The determining unit 211 determines whether the belt conveyor BC is in a specific state using the drive current characteristic value wirelessly received by the communication module 22. The specific state of the belt conveyor BC includes a state where the belt conveyor BC is transporting raw materials, a state where a slip has occurred on the belt conveyor BC, and the like. At this time, the determining unit 211 uses the identifier of the drive pulley Px and the identifier of the belt conveyor BC, which are wirelessly received together with the drive current feature value by the communication module 22, to determine which belt conveyor BC the drive current feature value constitutes. , which drive pulley Px is the characteristic value of the drive current of the motor M that rotationally drives it.

Note that the determination unit 211 can determine whether or not the belt conveyor BC is in a specific state using an arbitrary method using the drive current characteristic value. For example, the determining unit 211 stores in the memory 23 a table that associates driving current characteristic values with specific states of the belt conveyor BC, and checks the wirelessly received driving current characteristic value against this table. A possible method is to determine whether or not the belt conveyor BC is in a specific state. However, this method is an example of a method for determining a specific state of the belt conveyor BC, and is not limited thereto.

If the belt conveyor BC is in a specific state, the determining unit 211 does not thereafter perform the state determination of the pulley P using the vibration acceleration characteristic value.
On the other hand, when the belt conveyor BC is not in a specific state, the determining unit 211 determines the state of the pulley P using the vibration acceleration characteristic value at that time. Note that the method for determining the state of the pulley P at this time may be the same as in the first embodiment. Further, the method of dealing with the case where it is determined that the pulley P is in a malfunctioning state or in a state where there is a risk of a malfunction may be the same as in the first embodiment.

Next, with reference to FIG. 15, an operation sequence of the belt conveyor monitoring system 1A according to the second embodiment will be described.
As shown in FIG. 15, in the belt conveyor monitoring device 10A, first, the collection unit 111 uses the vibration acceleration sensor SA installed on the bearing of the pulley P, which is connected to the vibration acceleration sensor I/F module 16. Data on vibration acceleration detected in series is collected (step S201).
Subsequently, the calculation unit 112 calculates a vibration acceleration characteristic value representing the characteristics of the vibration acceleration data within a certain period collected by the collection unit 111 (step S202).

Subsequently, the collection unit 111 collects data on the drive current detected in time series by the current sensor SB connected to the current sensor I/F module 17 and installed on the motor M that rotationally drives the drive pulley Px. (Step S203).
Subsequently, the calculation unit 112 calculates a drive current characteristic value representing the characteristics of the drive current data within a certain period of time collected by the collection unit 111 (step S204).

Note that steps S201 and S202 and steps S203 and S204 may be executed in reverse order or may be executed in parallel.

Subsequently, the communication module 12 wirelessly transmits the vibration acceleration characteristic value and the drive current characteristic value calculated by the calculation unit 112 to the host device 20 (step S205). At this time, the communication module 12 wirelessly transmits the identifier of the pulley P and the identifier of the belt conveyor BC together with the vibration acceleration characteristic value to the host device 20. Furthermore, the communication module 12 wirelessly transmits the drive current characteristic value as well as the identifier of the drive pulley Px and the identifier of the belt conveyor BC to the host device 20. Note that the vibration acceleration characteristic value and the drive current characteristic value may be wirelessly transmitted separately.

In the host device 20, first, the communication module 22 wirelessly receives the vibration acceleration characteristic value and the drive current characteristic value wirelessly transmitted from the belt conveyor monitoring device 10A (step S206). At this time, the communication module 22 wirelessly receives the identifier of the pulley P and the identifier of the belt conveyor BC together with the vibration acceleration feature value from the belt conveyor monitoring device 10A, and also receives the identifier of the drive pulley Px and the identifier of the belt conveyor BC together with the drive current feature value. The identifier of the belt conveyor BC is received wirelessly.

Subsequently, the determination unit 211 determines whether the belt conveyor BC is in a specific state using the drive current characteristic value wirelessly received by the communication module 22 (step S207). At this time, the determining unit 211 uses the identifier of the drive pulley Px and the identifier of the belt conveyor BC, which are wirelessly received together with the drive current feature value by the communication module 22, to determine which belt conveyor BC the drive current feature value constitutes. , which drive pulley Px is the characteristic value of the drive current of the motor M that rotationally drives it.

If the belt conveyor BC is not in a specific state, the determining unit 211 determines the state of the pulley P using the vibration acceleration characteristic value wirelessly received by the communication module 22 (step S208). At this time, the determination unit 211 determines which belt conveyor BC the vibration acceleration characteristic value constitutes, using the pulley P identifier and the belt conveyor BC identifier wirelessly received together with the vibration acceleration characteristic value by the communication module 22. The characteristic value of the vibration acceleration generated in which pulley P is specified.
Note that when the belt conveyor BC is in a specific state, the determining unit 211 does not perform the state determination of the pulley P using the vibration acceleration characteristic value.

As described above, according to the second embodiment, the belt conveyor monitoring device 10A further collects data on the drive current detected in time series by the current sensor SB installed on the motor M that rotationally drives the drive pulley Px. Then, a drive current characteristic value representing the characteristics of the collected drive current data within a certain period of time is further calculated, and the calculated drive current characteristic value is further wirelessly transmitted to the host device 20. The host device 20 uses the drive current characteristic value wirelessly transmitted from the belt conveyor monitoring device 10A to determine whether the belt conveyor BC is in a specific state. When the belt conveyor BC is not in a specific state, the host device 20 uses the vibration acceleration characteristic value at that time to determine the state of the pulley P, as in the first embodiment.

That is, according to the second embodiment, the host device 20 prevents the belt conveyor BC from being in a specific state such as a state in which the belt conveyor BC is transporting raw materials or a state in which a slip has occurred in the belt conveyor BC. In this case, the state of the pulley P is determined using the vibration acceleration characteristic value at that time. Therefore, the host device 20 determines the state of the pulley P using the vibration acceleration characteristic value when the belt conveyor BC is not affected by material conveyance or slip (that is, a state that is not a specific state). Therefore, it is possible to further improve the accuracy of determining the state of the pulley P.

Further, according to the second embodiment, the belt conveyor monitoring device 10A does not wirelessly transmit the drive current data obtained from the current sensor SB as it is without processing it, but instead transmits the drive current data for a certain period of time. A driving current characteristic value representing the characteristic is wirelessly transmitted. As a result, drive current characteristic values with a significantly reduced amount of data are transmitted from the belt conveyor monitoring device 10A to the host device 20. Therefore, even if a huge number of drive current characteristic values of the motor M that rotationally drives the drive pulley Px are transmitted to the host device 20, the amount of data for each drive current characteristic value is small, so the communication band of the wireless network is limited. Pressure is suppressed. As a result, occurrences of communication delays and communication failures due to communication band compression are also suppressed.

Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above embodiments. Various changes can be made to the structure and details of the present disclosure that can be understood by those skilled in the art within the scope of the present disclosure.

Further, part or all of the above embodiments may be described as in the following supplementary notes, but the present invention is not limited to the following.
(Additional note 1)
a vibration acceleration sensor installed on a bearing of a pulley constituting a belt conveyor and detecting vibration acceleration generated in the bearing of the pulley;
The vibration acceleration sensor is connected, collects vibration acceleration data detected in time series by the vibration acceleration sensor, and calculates a vibration acceleration characteristic value representing the characteristics of the vibration acceleration data within a certain period of time collected; a monitoring device that wirelessly transmits the calculated vibration acceleration characteristic value;
a host device that wirelessly receives the vibration acceleration characteristic value wirelessly transmitted from the monitoring device and determines the state of the pulley using the vibration acceleration characteristic value;
Belt conveyor monitoring system.
(Additional note 2)
The monitoring device includes:
storing an identifier of the vibration acceleration sensor connected to the monitoring device in association with an identifier of a pulley on which the vibration acceleration sensor is installed and an identifier of a belt conveyor configured with the pulley;
When transmitting the vibration acceleration characteristic value wirelessly, the pulley identifier and belt conveyor identifier that are associated with the identifier of the vibration acceleration sensor that detected the vibration acceleration that is the source of the vibration acceleration characteristic value are transmitted as the vibration acceleration. wirelessly transmit along with feature values,
Belt conveyor monitoring system described in Appendix 1.
(Additional note 3)
further comprising a current sensor installed on a motor that rotationally drives a drive pulley constituting the belt conveyor and detects a drive current supplied to the motor,
The monitoring device includes:
further collecting data of the drive current detected in time series by the current sensor,
further calculating a drive current characteristic value representing the characteristics of the collected drive current data within the certain period;
further wirelessly transmitting the calculated drive current characteristic value;
The higher-level device is
further wirelessly receiving the driving current characteristic value wirelessly transmitted from the monitoring device;
Determining whether the belt conveyor is in a specific state using the drive current characteristic value,
determining the state of the pulley using a vibration acceleration characteristic value when the belt conveyor is not in a specific state;
Belt conveyor monitoring system according to appendix 1 or 2.
(Additional note 4)
The monitoring device includes:
The identifier of the current sensor connected to the monitoring device is stored in correspondence with the identifier of a drive pulley that rotationally drives a motor in which the current sensor is installed and the identifier of a belt conveyor configured with the drive pulley. ,
When wirelessly transmitting the drive current characteristic value, the drive pulley identifier and belt conveyor identifier that are associated with the identifier of the current sensor that detected the drive current that is the source of the drive current characteristic value are transmitted as the drive current. wirelessly transmit along with feature values,
Belt conveyor monitoring system described in Appendix 3.
(Appendix 5)
The monitoring device calculates an average value or an effective value of vibration acceleration data within the certain period as the vibration acceleration characteristic value.
The belt conveyor monitoring system according to any one of Supplementary Notes 1 to 4.
(Appendix 6)
The monitoring device calculates an average value or an effective value of drive current data within the certain period as the drive current characteristic value.
Belt conveyor monitoring system according to appendix 3 or 4.
(Appendix 7)
When the host device determines that the pulley is in a malfunctioning state or in a state where there is a risk of malfunction, the host device outputs a monitoring instruction for a maintenance person to monitor the pulley.
The belt conveyor monitoring system according to any one of Supplementary Notes 1 to 6.
(Appendix 8)
A belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting a belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a collection unit that collects data of vibration acceleration detected in time series by the vibration acceleration sensor;
a calculation unit that calculates a vibration acceleration characteristic value representing the characteristics of vibration acceleration data within a certain period collected by the collection unit;
a communication unit that wirelessly transmits the vibration acceleration characteristic value calculated by the calculation unit to a host device;
A belt conveyor monitoring device equipped with
(Appendix 9)
A vibration acceleration sensor table that stores an identifier of the vibration acceleration sensor connected to the belt conveyor monitoring device in association with an identifier of a pulley in which the vibration acceleration sensor is installed and an identifier of a belt conveyor configured with the pulley. More prepared,
When wirelessly transmitting the vibration acceleration characteristic value, the communication unit transmits a pulley identifier and a belt conveyor identifier that are associated with the identifier of the vibration acceleration sensor that detected the vibration acceleration that is the source of the vibration acceleration characteristic value. wirelessly transmitting the vibration acceleration characteristic value along with the vibration acceleration characteristic value.
Belt conveyor monitoring device according to appendix 8.
(Appendix 10)
The belt conveyor monitoring device includes:
installed on a motor that rotationally drives a drive pulley constituting the belt conveyor, and further connected to a current sensor that detects a drive current supplied to the motor;
The collection unit further collects data on the drive current detected in time series by the current sensor,
The calculation unit further calculates a drive current characteristic value representing the characteristics of the drive current data within the certain period collected by the collection unit,
The communication unit further wirelessly transmits the drive current characteristic value calculated by the calculation unit to the host device.
Belt conveyor monitoring device according to appendix 8 or 9.
(Appendix 11)
An identifier of the current sensor connected to the belt conveyor monitoring device is stored in association with an identifier of a drive pulley that rotationally drives a motor in which the current sensor is installed and an identifier of a belt conveyor configured with the drive pulley. Further equipped with a current sensor table,
When wirelessly transmitting the drive current characteristic value, the communication unit transmits a drive pulley identifier and a belt conveyor identifier that are associated with the identifier of the current sensor that detected the drive current that is the source of the drive current characteristic value. wirelessly transmitting along with the drive current characteristic value,
Belt conveyor monitoring device according to appendix 10.
(Appendix 12)
The calculation unit calculates an average value or an effective value of vibration acceleration data within the certain period as the vibration acceleration characteristic value.
The belt conveyor monitoring device according to any one of Supplementary Notes 8 to 11.
(Appendix 13)
The calculation unit calculates an average value or an effective value of drive current data within the certain period as the drive current characteristic value.
Belt conveyor monitoring device according to appendix 10 or 11.
(Appendix 14)
A belt conveyor monitoring method using a belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley, the method comprising:
collecting data of vibration acceleration detected in time series by the vibration acceleration sensor;
calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
Belt conveyor monitoring methods, including:
(Additional note 15)
A belt conveyor monitoring device connected to a vibration acceleration sensor installed on a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a step of collecting data of vibration acceleration detected in time series by the vibration acceleration sensor;
a step of calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
a step of wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
A program to run.

1,1A Belt conveyor monitoring system 10,10A Belt conveyor monitoring device 11 Processor 111 Collection section 112 Arithmetic section 12 Communication module 13 Memory 14 DC power supply module 15 Input/output I/F module 16 Vibration acceleration sensor I/F module 17 Current sensor I /F module 20 Host device 21 Processor 211 Judgment unit 22 Communication module 23 Memory 24 DC power supply module 25 Input/output I/F module BC Belt conveyor Px Drive pulley Py Driven pulley BE Bearing M Motor G Generator SA-1 to SA-N Vibration acceleration sensor SB-1~SB-M Current sensor

Claims (7)

A belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting a belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a collection unit that collects data of vibration acceleration detected in time series by the vibration acceleration sensor;
a calculation unit that calculates a vibration acceleration characteristic value representing the characteristics of vibration acceleration data within a certain period collected by the collection unit;
a communication unit that wirelessly transmits the vibration acceleration characteristic value calculated by the calculation unit to a host device;
Equipped with
The belt conveyor monitoring device is installed on a motor that rotationally drives a drive pulley constituting the belt conveyor, and is further connected to a current sensor that detects a drive current supplied to the motor,
The collection unit further collects data on the drive current detected in time series by the current sensor,
The calculation unit further calculates a drive current characteristic value representing the characteristics of the drive current data within the certain period collected by the collection unit,
The communication unit further wirelessly transmits the drive current characteristic value calculated by the calculation unit to the host device.
Belt conveyor monitoring device. A vibration acceleration sensor table that stores an identifier of the vibration acceleration sensor connected to the belt conveyor monitoring device in association with an identifier of a pulley in which the vibration acceleration sensor is installed and an identifier of a belt conveyor configured with the pulley. More prepared,
When wirelessly transmitting the vibration acceleration characteristic value, the communication unit transmits a pulley identifier and a belt conveyor identifier that are associated with the identifier of the vibration acceleration sensor that detected the vibration acceleration that is the source of the vibration acceleration characteristic value. wirelessly transmitting the vibration acceleration characteristic value along with the vibration acceleration characteristic value.
The belt conveyor monitoring device according to claim 1. An identifier of the current sensor connected to the belt conveyor monitoring device is stored in association with an identifier of a drive pulley that rotationally drives a motor in which the current sensor is installed and an identifier of a belt conveyor configured with the drive pulley. Further equipped with a current sensor table,
When wirelessly transmitting the drive current characteristic value, the communication unit transmits a drive pulley identifier and a belt conveyor identifier that are associated with the identifier of the current sensor that detected the drive current that is the source of the drive current characteristic value. wirelessly transmitting along with the drive current characteristic value,
A belt conveyor monitoring device according to claim 1 or 2. The calculation unit calculates an average value or an effective value of vibration acceleration data within the certain period as the vibration acceleration characteristic value.
A belt conveyor monitoring device according to any one of claims 1 to 3. The calculation unit calculates an average value or an effective value of drive current data within the certain period as the drive current characteristic value.
A belt conveyor monitoring device according to any one of claims 1 to 4. A belt conveyor monitoring method using a belt conveyor monitoring device connected to a vibration acceleration sensor installed in a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley, the method comprising:
a collecting step of collecting vibration acceleration data detected in time series by the vibration acceleration sensor;
a calculation step of calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
a communication step of wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
including;
The belt conveyor monitoring device is installed on a motor that rotationally drives a drive pulley constituting the belt conveyor, and is further connected to a current sensor that detects a drive current supplied to the motor,
In the collecting step, further collecting data of the drive current detected in time series by the current sensor,
In the calculation step, further calculate a drive current characteristic value representing the characteristics of the drive current data within the certain period collected in the collection step,
In the communication step, the drive current characteristic value calculated in the calculation step is further wirelessly transmitted to the host device.
Belt conveyor monitoring method. A belt conveyor monitoring device connected to a vibration acceleration sensor installed on a bearing of a pulley constituting the belt conveyor and detecting vibration acceleration generated in the bearing of the pulley,
a collection procedure for collecting vibration acceleration data detected in time series by the vibration acceleration sensor;
a calculation procedure for calculating a vibration acceleration characteristic value representing the characteristics of the collected vibration acceleration data within a certain period;
a communication procedure for wirelessly transmitting the calculated vibration acceleration characteristic value to a host device;
A program for executing
The belt conveyor monitoring device is installed on a motor that rotationally drives a drive pulley constituting the belt conveyor, and is further connected to a current sensor that detects a drive current supplied to the motor,
In the collection step, data on the drive current detected in time series by the current sensor is further collected,
In the calculation step, further calculate a drive current characteristic value representing the characteristics of the drive current data within the certain period collected by the collection step,
In the communication procedure, the drive current characteristic value calculated by the calculation procedure is further wirelessly transmitted to the host device.
program.

Images