WO2017090321A1

WO2017090321A1 - Equipment monitoring system, management device, and management program

Info

Publication number: WO2017090321A1
Application number: PCT/JP2016/079392
Authority: WO
Inventors: 裕嗣山本; 靖狄
Original assignee: 住友電気工業株式会社
Priority date: 2015-11-27
Filing date: 2016-10-04
Publication date: 2017-06-01
Also published as: JP2017098886A

Abstract

Provided is an equipment monitoring system comprising the following: a plurality of measurement devices that are provided, respectively, for the plurality of pieces of equipment, each of the measurement devices performing a measurement for the equipment corresponding thereto, and the measurement devices transmitting a wireless signal including measurement information indicating the measurement results; and a management device that acquires the measurement results from the measurement devices and calculates the operating time of the pieces of equipment on the basis of the acquired measurement results.

Description

Equipment monitoring system, management device and management program

The present invention relates to an equipment monitoring system, a management device, and a management program.

Conventionally, a management device for managing the usage status of equipment has been developed. For example, Patent Document 1 (Japanese Patent No. 4160315) discloses the following technique.

That is, the pump device management device includes a machine-side management slave unit provided on the machine side of the pump device. The machine-side slave unit stores the operation status of the pump device and transmits the stored data to the host computer through the network. The management apparatus of the pump device accumulates data periodically sent from the machine side management slave unit, and stores a database storing detailed data of the pump device provided with the machine side management slave unit, And a host computer disclosing the database so as to be accessible from the network. The machine side management slave unit takes in a current signal from at least a current sensor provided in a power line as the operation status, and temporarily stores it in an operation status data total storage means, and stores the operation status data total storage means in the operation status data total storage means. Data transmission means for transmitting the received data to the host computer together with an ID signal for identifying the pump device. The data captured in the operation status data total storage means is not time-series data, and the current value or power value is divided into a plurality of range regions, and the operation time data indicating how long the operation has been performed in which range region. It is.

JP 2003-293916 A

(1) In order to solve the above-described problem, an equipment monitoring system according to an aspect of the present invention is provided corresponding to each of a plurality of equipments, performs measurement on the corresponding equipment, and indicates measurement results. And a management device that acquires a measurement result by the measurement device and calculates an operation time of the facility based on the acquired measurement result.

(4) In order to solve the above-described problem, a management apparatus according to an aspect of the present invention is provided corresponding to each of a plurality of facilities, measures the corresponding facilities, and provides measurement information indicating a measurement result. The acquisition part which acquires the measurement result by the some measuring device which transmits the radio signal containing is provided, and the calculation part which calculates the operation time of the said installation based on the said measurement result acquired by the said acquisition part.

(5) In order to solve the above-described problem, a management program according to an aspect of the present invention is a management program used in a management apparatus, and a computer is provided corresponding to each of a plurality of facilities. Based on the measurement results acquired by the acquisition unit, the acquisition unit that measures the facilities and acquires the measurement results by a plurality of measurement devices that transmit wireless signals including measurement information indicating the measurement results, It is a program for making it function as a calculation part which calculates the operation time of.

The present invention can be realized not only as an equipment monitoring system including such a characteristic processing unit, but also as a method using such characteristic processing as a step, or a part or all of the equipment monitoring system. It can be realized as a semiconductor integrated circuit to be realized, or as a semiconductor integrated circuit that realizes a part or all of the management device.

FIG. 1 is a diagram showing a configuration of an equipment monitoring system according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the management apparatus according to the embodiment of the present invention. FIG. 3 is a diagram illustrating an example of a temporal change in the measurement result stored by the calculation unit in the management apparatus according to the embodiment of the present invention. FIG. 4 is a diagram for explaining a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention. FIG. 5 is a diagram for describing a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention. FIG. 6 is a diagram for explaining a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention. FIG. 7 is a diagram illustrating an example of a sequence when an operation time calculation process and a threshold value update process are performed in the equipment monitoring system according to the embodiment of the present invention. FIG. 8 is a diagram illustrating an example of a sequence when a process for determining whether there is an abnormality in a product is performed in the equipment monitoring system according to the embodiment of the present invention.

[Problems to be solved by the present disclosure]
A technique capable of managing a plurality of facilities satisfactorily beyond the technique described in Patent Document 1 is desired.

This indication was made in order to solve the above-mentioned subject, and the object is to provide the equipment monitoring system, management device, and management program which can manage a plurality of facilities satisfactorily.
[Effects of the present disclosure]

According to the present disclosure, a plurality of facilities can be managed well.

First, the contents of the embodiment of the present invention will be listed and described.

(1) The facility monitoring system according to the embodiment of the present invention is provided corresponding to each of a plurality of facilities, measures the corresponding facility, and transmits a radio signal including measurement information indicating a measurement result. A plurality of measuring devices; and a management device that acquires measurement results of the measuring devices and calculates an operating time of the facility based on the acquired measurement results.

With such a configuration, it is possible to recognize the load for each facility based on the measurement result, and based on each recognized load, calculate the useful operating time taking into account the size of the load on the facility for each facility Can do. Thus, for example, each facility can be updated or maintained at an appropriate timing based on the useful operating time for each facility. Therefore, a plurality of facilities can be managed well.

(2) Preferably, the management device calculates the operating time based on a magnitude relationship between the measurement result and a threshold value, and updates the threshold value based on the measurement result when the facility is not operating. To do.

In this way, the threshold value can be set to an appropriate value by the configuration that updates the threshold value based on the measurement result when the load on the facility is low, and the useful operating time is more accurately determined. Can be calculated.

(3) Preferably, the management device determines an abnormality of a product obtained by using the facility based on the measurement result.

With such a configuration, for example, based on a measurement result correlated with a product manufacturing process, it is possible to accurately determine whether or not the product is abnormal.

(4) The management device according to the embodiment of the present invention is provided corresponding to each of a plurality of facilities, performs a measurement on the corresponding facility, and transmits a plurality of radio signals including measurement information indicating a measurement result. The acquisition part which acquires the measurement result by this measuring device, and the calculation part which calculates the operation time of the said equipment based on the said measurement result acquired by the said acquisition part.

(5) A management program according to an embodiment of the present invention is a management program used in a management apparatus, and a computer is provided corresponding to each of a plurality of facilities, and measures the corresponding facilities, An acquisition unit that acquires measurement results from a plurality of measuring devices that transmit wireless signals including measurement information indicating measurement results, and a calculation that calculates the operating time of the facility based on the measurement results acquired by the acquisition unit This is a program for functioning as a part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Moreover, you may combine arbitrarily at least one part of embodiment described below.

[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of an equipment monitoring system according to an embodiment of the present invention.

1, the facility monitoring system 301 includes a plurality of facilities 3, a plurality of measuring devices 11, an access point 10, and a management device 101.

In this example, in the equipment monitoring system 301,

equipment

3A and 3B, which are equipment 3, are provided. The measuring device 11 is provided corresponding to each of the plurality of facilities 3. In this example, measuring

devices

11A and 11B that are measuring devices 11 are provided corresponding to the

facilities

3A and 3B, respectively.

The facility monitoring system 301 includes two facilities 3 and two measuring devices 11, but may be configured to include more facilities 3 and measuring devices 11.

Equipment 3 is, for example, an electric welding machine that operates using a three-phase AC power source. The equipment 3 may be other than an electric welder.

The

facilities

3A and 3B are supplied with electric power from the distribution board 12 via the

power lines

14A and 14B, respectively. Hereinafter, each of the power lines 14 </ b> A and 14 </ b> B is also referred to as a power line 14.

More specifically, for example, the power line 14A includes three conductors for conducting a three-phase alternating current, and is connected to the facility 3A and the first end connected to the breaker 13A in the distribution board 12. And a second end. Power line 14B includes, for example, three conductors for conducting a three-phase alternating current, and includes a first end connected to breaker 13B in distribution board 12 and a second end connected to facility 3B. Have

For example, in each of the first ends of the

power lines

14A and 14B, the measuring

devices

11A and 11B are provided in one of the three conducting wires.

Each measuring device 11 measures the operation of the corresponding equipment 3, and transmits a radio signal including measurement information indicating the measurement result. More specifically, the measuring device 11 includes, for example, a clamp-type current sensor and a wireless communication unit, and measures the current flowing through the corresponding equipment 3.

Specifically, the measuring device 11A measures the current flowing through the conducting wire in the power line 14A provided with it at a predetermined period. Moreover, the measuring device 11B measures the current flowing through the conducting wire in the power line 14B on which the measuring device 11B is provided at a predetermined period.

For example, when the measurement is completed, the

measurement devices

11A and 11B create measurement information that includes the measurement ID that is the ID of the device and the measured current value as a measurement result, and the access point 10 receives the wireless signal that includes the created measurement information. Send to.

Note that the measurement device 11 is not limited to a configuration that transmits measurement information by wireless communication, but may be a configuration that transmits measurement information by wired communication.

When the access point 10 receives the wireless signal including the measurement information from each measurement device 11, the access point 10 acquires the measurement information included in the received wireless signal, and transmits the acquired measurement information to the management device 101 by, for example, wired communication.

Workers 2 </ b> A and 2 </ b> B, who are workers 2, perform welding work on the work target 18 using the equipment 3. For example, the work object 18 for which the welding work by the worker 2 has been completed is a product obtained by using the equipment 3.

The facility 3 outputs electric current via the output line 15 to the torch 17 held by the operator 2 using electric power received from the distribution board 12 via the power line 14. The worker 2 performs welding work by arc discharge generated between the torch 17 and the work object 18. The current returns to the facility 3 through the work object 18 and the ground wire 16.

The measuring device 11 is not limited to the configuration provided on the power line 14 and may be provided on the output line 15. The measuring device 11 is not limited to the configuration provided on the first end side of the power line 14, and may be provided at any position on the power line 14. Moreover, the measuring device 11 may be provided not only in the configuration in which the measuring device 11 is provided in one of the three conducting wires in the power line 14 but also in three conducting wires or two of the three conducting wires.

FIG. 2 is a diagram showing the configuration of the management apparatus according to the embodiment of the present invention.

With reference to FIG. 2, the management apparatus 101 includes an acquisition unit 21, a calculation unit 22, an abnormality determination unit 24, and a display unit 25.
For example, the acquisition unit 21, the calculation unit 22, and the abnormality determination unit 24 execute a program for a processor such as a CPU (Central Processing Unit) to realize the acquisition unit 21, the calculation unit 22, and the abnormality determination unit 24. Is realized. Each of these units may be realized by one processor or may be realized by separate processors. The display unit 25 is configured by an output device such as a monitor.

The acquisition unit 21 acquires measurement results obtained by the plurality of measurement devices 11. Specifically, the acquisition unit 21 receives measurement information from, for example, the access point 10.

For example, when receiving (acquiring) measurement information, the acquisition unit 21 creates time information indicating the received timing, and outputs the generated time information to the calculation unit 22 including the measurement information. Here, the time information is the time when the acquisition unit 21 acquires the measurement information, but may be information that can determine the time when the measurement result is obtained by the measurement device 11. In the following description, it is assumed that the measurement result is obtained by the measurement device 11 at the timing indicated by the time information.

The calculation unit 22 calculates the operating time of the equipment 3 based on the measurement result acquired by the acquisition unit 21. More specifically, the calculation unit 22 calculates the operating time based on the magnitude relationship between the measurement result and the threshold value, for example.

Specifically, when receiving the measurement information from the acquisition unit 21, the calculation unit 22 acquires a measurement ID, a measurement result, and time information from the received measurement information, and calculates the current value that is the acquired measurement result as the time information. Stored for each measurement ID in association with the timing shown.

FIG. 3 is a diagram illustrating an example of a time change of a measurement result stored by the calculation unit in the management apparatus according to the embodiment of the present invention. In FIG. 3, the horizontal axis indicates time, and the vertical axis indicates the current value.

FIG. 3 shows, for example, a time change of the current value Ia measured by the measuring device 11A. The time change of the current value Ib measured by the measuring device 11B is the same as the time change shown in FIG.

Referring to FIG. 3, for example, the calculation unit 22 calculates the operation time SA of the equipment 3A and the operation time SB of the equipment 3B for each predetermined period Ts.

More specifically, for example, when the expiration timing of the cycle Ts arrives, the calculation unit 22 integrates the time during which the current value Ia is larger than the threshold value Tha in the cycle Ts, and sets the accumulated time before the cycle Ts. The time added to the time accumulated in each cycle Ts is calculated as the operating time SA.

Similarly, for example, the calculation unit 22 integrates the time when the current value Ib is larger than the threshold value Thb in the cycle Ts, and adds the accumulated time and the time accumulated in each cycle Ts before the cycle Ts. The time is calculated as the operating time SB. For example, the calculation unit 22 outputs the calculated operating hours SA and SB to the display unit 25.

When the display unit 25 receives the operation times SA and SB from the calculation unit 22, the display unit 25 displays the received operation times SA and SB.

The administrator recognizes the remaining time from the operating time SA and SB displayed on the display unit 25 to the update or maintenance of each of the

facilities

3A and 3B.

Further, for example, the administrator estimates the work times of the

workers

2A and 2B from the operation times SA and SB, respectively, and from the relationship between the estimated work times and the quantity of deliverables by the

workers

2A and 2B, the worker 2A And 2B work efficiency is evaluated.

Also, the calculation unit 22 updates the threshold value based on, for example, a measurement result when the facility 3 is not operating.

Specifically, the calculation unit 22 updates the threshold values Tha and Thb once a day, for example.

More specifically, the calculation unit 22 calculates the average of the current values measured a plurality of times in the time zone when the facility is not operating, for example, at midnight, as the non-operating current value. At this time, the calculation unit 22 calculates a non-operating current value for each facility 3, for example.

The calculating unit 22 calculates, for example, a value obtained by multiplying the non-operating current value of the facility 3A by a predetermined value greater than 1, and updates the threshold value Tha to a newly calculated value. Similarly, for example, the calculation unit 22 calculates a value obtained by multiplying the non-operating current value of the facility 3B by a predetermined value greater than 1, and updates the threshold value Thb to a newly calculated value.

Note that the calculation unit 22 may calculate and update new threshold values Tha and Thb by the following method. That is, for example, the calculation unit 22 calculates a value obtained by adding a predetermined margin to the non-operating current value of the facility 3A, and updates the threshold value Tha to a newly calculated value. The calculation unit 22 also updates the threshold value Thb in the same manner as the threshold value Tha.

Also, the calculation unit 22 updates the threshold value based on, for example, the measurement result when the facility 3 is not operating and the measurement result when the facility 3 is operating.

More specifically, the calculation unit 22 calculates, for example, the average or maximum value of the current values measured a plurality of times in the time zone in which the facility 3A is operating as the operating current value. For example, the calculation unit 22 calculates an intermediate value of the difference between the non-operating current value and the operating current value of the facility 3A, or a value obtained by multiplying the difference by a predetermined value smaller than 1, and newly calculates a threshold value Tha. Update to the specified value. The calculation unit 22 also updates the threshold value Thb in the same manner as the threshold value Tha.

For example, when the threshold value is set to zero, if the current value measured by the measuring device 11 includes noise, the current value becomes larger than zero even when the equipment 3 is not in operation. The time is calculated to a value larger than the actual time.

On the other hand, a more correct operating time can be calculated by a configuration in which the threshold value is calculated using the non-operating current value.

Further, for example, when the current value measured by the measuring device 11 when the equipment 3 is operating is not constant, if the threshold value is set to a large value, the operating time of the equipment 3 is set to a value smaller than the actual time. Will be calculated.

On the other hand, a more accurate operating time can be calculated by a configuration in which the threshold value is calculated using the non-operating current value and the operating current value.

Referring to FIG. 2 again, the abnormality determination unit 24 determines, for example, the abnormality of the product obtained by using the equipment 3 based on the measurement result.

Specifically, the abnormality determination unit 24 determines, for example, the abnormality of the product obtained by using the measurement device 11 based on the time change of the current value measured by the measurement device 11.

FIG. 4 is a diagram for explaining a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention.

The graph GN in FIG. 4 shows a waveform Wr of the current value over time when a non-defective product is manufactured. In addition, the graph GA1 shows a waveform W1 of a time change of the current value when a defective product is manufactured. In graphs GN and GA1, the horizontal axis indicates time, and the vertical axis indicates the current value.

Referring to FIG. 4, abnormality determination unit 24 holds, for example, waveform Wr shown in graph GN for reference.

The abnormality determination unit 24 monitors, for example, the current value stored by the calculation unit 22 and the corresponding timing for each measurement ID. For example, when the current value indicates a value larger than a predetermined threshold value, abnormality determination unit 24 recognizes that worker 2 has started welding work on work object 18.

Then, the abnormality determination unit 24 acquires, for example, a waveform based on a current value and a corresponding timing until a predetermined time elapses from the start timing of the welding work, from the calculation unit 22.

For example, when the abnormality determination unit 24 acquires the waveform W1 shown in the graph GA1 from the calculation unit 22, the abnormality determination unit 24 compares the acquired waveform W1 with the held waveform Wr. More specifically, the abnormality determination unit 24 compares, for example, the similarity between the waveforms W1 and Wr and the current values during operation of the waveforms W1 and Wr.

Specifically, for example, the abnormality determination unit 24 is similar in waveform W1 and waveform Wr, but the current value when the waveform W1 is operating is smaller than the current value when the waveform Wr is operating. The product welded by the person 2 is determined to be defective, and the determination result is output to the display unit 25.

FIG. 5 is a diagram for explaining a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention.

The graph GN in FIG. 5 is the same as the graph GN shown in FIG. Further, the graph GA2 shows a waveform W2 of a time change of the current value when a defective product is manufactured. In graphs GN and GA2, the horizontal axis indicates time, and the vertical axis indicates the current value.

Referring to FIG. 5, for example, when abnormality determination unit 24 acquires waveform W2 shown in graph GA2 from calculation unit 22, comparison is made between acquired waveform W2 and held waveform Wr, and waveform W2 and waveform Wr are similar. However, since the current value at the time of operation of the waveform W2 is larger than the current value at the time of operation of the waveform Wr, it is determined that the product welded by the operator 2 is a defective product, and the determination result is Output to the display unit 25.

FIG. 6 is a diagram for explaining a product abnormality determination process performed by the abnormality determination unit in the management apparatus according to the embodiment of the present invention.

The graph GN in FIG. 6 is the same as the graph GN shown in FIG. In addition, the graph GA3 shows a waveform W3 of a time change of the current value when a defective product is manufactured. In graphs GN and GA3, the horizontal axis represents time, and the vertical axis represents the current value.

Referring to FIG. 6, for example, when abnormality determination unit 24 acquires waveform W3 shown in graph GA3 from calculation unit 22, comparison is made between acquired waveform W3 and held waveform Wr, and waveform W3 and waveform Wr are similar. Therefore, it is determined that the product welded by the operator 2 is a defective product, and the determination result is output to the display unit 25.

When the display unit 25 receives the determination result from the abnormality determination unit 24, the display unit 25 displays the received determination result. *

The worker 2 recognizes the quality of the deliverable from the determination result displayed on the display unit 25, and performs the welding work again as necessary.

[Operation]
Each device in the equipment monitoring system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following sequence diagram or flowchart from a memory (not shown). To do. Each of the programs of the plurality of apparatuses can be installed from the outside. The programs of the plurality of apparatuses are distributed while being stored in a recording medium.

FIG. 7 is a diagram showing an example of a sequence when an operation time calculation process and a threshold value update process are performed in the equipment monitoring system according to the embodiment of the present invention.

Referring to FIG. 7, it is assumed that the calculation unit 22 in the management apparatus 101 holds the threshold values Tha and Thb.

First, the measuring device 11A measures the current flowing through the conducting wire in the power line 14 connected to the facility 3A at a predetermined cycle (step S102).

Next, the measurement apparatus 11A creates measurement information including the measurement ID that is its own ID and the measured current value as a measurement result, and transmits the created measurement information to the management apparatus 101 via the access point 10 (step S1). S104).

Next, when receiving the measurement information from the measurement device 11A, the acquisition unit 21 in the management device 101 creates time information indicating the received timing, and outputs the created time information to the calculation unit 22 by including the created time information in the measurement information. (Step S106).

Next, when receiving the measurement information from the acquisition unit 21, the calculation unit 22 acquires a measurement ID, a measurement result, and time information from the received measurement information, and obtains a current value that is the acquired measurement result as data of the measurement device 11A. Ia is stored in association with the timing indicated by the time information (step S108).

Moreover, the measuring device 11B measures the current flowing through the conducting wire in the power line 14 connected to the facility 3B at a predetermined period (step S110).

Next, the measurement device 11B creates measurement information that includes the measurement ID that is its own ID and the measured current value as a measurement result, and transmits the created measurement information to the management device 101 via the access point 10 (step). S112).

Next, when receiving the measurement information from the measurement apparatus 11B, the acquisition unit 21 in the management apparatus 101 creates time information indicating the received timing, and outputs the created time information to the calculation unit 22 by including the created time information in the measurement information. (Step S114).

Upon receiving the measurement information from the acquisition unit 21, the calculation unit 22 acquires a measurement ID, a measurement result, and time information from the received measurement information, and uses the current value Ib that is the acquired measurement result as data of the measurement device 11B. The information is stored in association with the timing indicated by the time information (step S116).

The processing of steps S102 to S108 is repeated each time the measuring device 11A measures current. Further, the processes of steps S110 to S116 are repeated each time the measuring device 11B measures the current.

Next, when the expiration timing of the cycle Ts arrives, the calculation unit 22 integrates the time during which the current value Ia is greater than the threshold value Tha in the cycle Ts, and the accumulated time and each cycle Ts before the cycle Ts. The time obtained by adding the time accumulated in (5) is calculated as the operating time SA (step S118).

Next, the calculation unit 22 integrates the time when the current value Ib is larger than the threshold value Thb in the period Ts, and adds the time obtained by adding the accumulated time and the time accumulated in each period Ts before the period Ts. The operating time SB is calculated (step S120).

The processing of steps S118 and S120 is repeated every time the expiration timing of the cycle Ts comes.

Next, the calculation unit 22 calculates, for example, an average of the current values Ia measured a plurality of times in a time zone when the facility is not operating once a day as a non-operating current value, and calculates a threshold value Tha. The non-operating current value is updated to a value multiplied by a predetermined value greater than 1.

For example, the calculation unit 22 calculates the average of the current values Ib measured a plurality of times in the time period as a non-operating current value, and sets the threshold Thb to a predetermined value greater than 1 to the calculated non-operating current value. Is updated to a value multiplied by (step S122).

In addition, the order of the steps S118 and S120 is not limited to the above, and the order may be changed.

FIG. 8 is a diagram illustrating an example of a sequence when a process for determining whether there is an abnormality in a product is performed in the equipment monitoring system according to the embodiment of the present invention.

Referring to FIG. 8, it is assumed that the abnormality determination unit 24 in the management apparatus 101 holds a waveform Wr indicating a time change of a current value when a non-defective product is manufactured.

The operations in steps S202 to S216 are the same as the operations in steps S102 to S116 shown in FIG.

Further, the abnormality determination unit 24 in the management apparatus 101 monitors the current values Ia and Ib stored by the calculation unit 22 (step S200).

Next, for example, when the monitored current value Ia becomes greater than the predetermined threshold value Th1 (YES in step S218), the abnormality determination unit 24 waits for a predetermined time (step S220).

Next, the abnormality determination unit 24 acquires, from the calculation unit 22, the waveform Wa based on the current value and the corresponding timing until the predetermined time elapses after the current value Ia becomes larger than the threshold value Th1 (step S222).

Next, the abnormality determination unit 24 compares the waveform Wr and the waveform Wa (step S224).

Next, the abnormality determination unit 24 determines whether or not the product is abnormal based on the comparison result (step S226).

Next, the abnormality determination unit 24 continues to monitor the current values Ia and Ib stored by the calculation unit 22 (step S228).

On the other hand, when the monitored current value Ia is equal to or less than the predetermined threshold value Th1 (NO in step S218), the abnormality determination unit 24 continues to monitor the current values Ia and Ib stored by the calculation unit 22 ( Step S228).

Note that the abnormality determination unit 24 determines whether or not there is an abnormality in the product obtained by using the equipment 3A in steps S218 to S226, but also determines whether there is an abnormality in the product obtained by using the equipment 3B. Do the same.

Moreover, although the measuring device which concerns on embodiment of this invention was set as the structure which measures the electric current which flows into the corresponding installation 3, it is not limited to this, The measuring device 11 is about the corresponding installation 3. Any configuration that measures physical quantities may be used. As an example of this physical quantity, in addition to the current flowing through the corresponding equipment 3, the voltage applied to the corresponding equipment 3, the power consumed in the corresponding equipment 3, the temperature or humidity in the corresponding equipment 3, or the corresponding equipment 3 The vibration generated in can be raised.

By the way, beyond the technique described in Patent Document 1, a technique capable of accurately calculating useful operating time for each facility is desired.

More specifically, for example, when a failure occurs in a facility, the production volume of the product manufactured using the facility decreases or the quality of the product deteriorates. There is a request to prevent the occurrence of

Generally, there is a guideline for the service life of equipment, and for example, a method of preventing the occurrence of a failure by updating or maintaining the equipment at the timing when the operation time of the equipment is approximately the same as the service life can be considered. However, since the useful life may change depending on the operating status of the equipment, it is required to calculate the operating time taking into account the size of the equipment load in order to update or maintain the equipment at a better timing. It has been.

In addition, new equipment may have a data output function for the equipment, but old equipment often does not have such a function. For example, it is very expensive to update an existing facility to a new facility for the data output function. Therefore, a method for adding a data output function to an existing facility at low cost is required.

On the other hand, in the equipment monitoring system according to the embodiment of the present invention, the plurality of measuring devices 11 are provided corresponding to the plurality of equipment 3 respectively, measure the corresponding equipment 3, and obtain the measurement results. A radio signal including measurement information to be transmitted is transmitted. And the management apparatus 101 acquires the measurement result by the measuring apparatus 11, and calculates the operation time of the installation 3 based on the acquired measurement result.

With such a configuration, the load for each facility 3 can be recognized based on the measurement result. Therefore, based on each recognized load, the useful operating time in consideration of the magnitude of the load in the facility 3 is determined for each facility 3. Can be calculated. Thereby, for example, each facility 3 can be updated or maintained at an appropriate timing based on the useful operating time for each facility 3. Therefore, a plurality of facilities can be managed well. Moreover, since the measuring apparatus 11 provided corresponding to the facility 3 transmits a radio signal including measurement information, the management apparatus 101 can acquire the measurement information without updating the facility 3, A data output function can be added to the existing equipment 3 at low cost.

Further, not only the pump device described in Patent Document 1, but also in the equipment 3 including a motor or the like, the current flowing through the equipment 3 may fluctuate due to aging or the like. Further, in the equipment 3 operated by the operator 2 such as a welding machine, the current flowing through the equipment 3 may vary depending on the operation method and the work content. Therefore, it is required to accurately calculate the useful operating time of the equipment 3 in consideration of such current fluctuation.

On the other hand, in the equipment monitoring system according to the embodiment of the present invention, the management apparatus 101 calculates the operating time based on the magnitude relationship between the measurement result and the threshold value, and the measurement result when the equipment 3 is not operating. The threshold value is updated based on

As described above, the threshold value can be set to an appropriate value by the configuration in which the threshold value is updated based on the measurement result at the time of non-operation when the load of the equipment 3 is small. Can be calculated.

Moreover, in the equipment monitoring system according to the embodiment of the present invention, the management apparatus 101 determines the abnormality of the product obtained by using the equipment 3 based on the measurement result.

In the management device according to the embodiment of the present invention, the acquisition unit 21 is provided corresponding to each of the plurality of facilities 3, performs measurement for the corresponding facilities 3, and includes wireless information including measurement information indicating the measurement results. Measurement results obtained by a plurality of measuring devices 11 that transmit signals are acquired. Then, the calculation unit 22 calculates the operating time of the equipment 3 based on the measurement result acquired by the acquisition unit 21.

It should be considered that the above embodiment is illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The above description includes the following features.

[Appendix 1]
A plurality of measuring devices that are provided corresponding to a plurality of facilities, measure the corresponding facilities, and transmit radio signals including measurement information indicating measurement results;
A management device that acquires a measurement result by the measurement device, and calculates an operation time of the facility based on the acquired measurement result,
The facility is a welder;
The measuring device measures a current flowing through the corresponding equipment, transmits a radio signal including the measurement information indicating a measurement result,
The equipment monitoring system, wherein the management device integrates a time when the current value measured by the measuring device is larger than a predetermined threshold at a predetermined cycle, and calculates the integrated time as the operation time.

[Appendix 2]
An acquisition unit that is provided corresponding to each of a plurality of facilities, performs measurement on the corresponding facilities, and acquires measurement results by a plurality of measurement devices that transmit wireless signals including measurement information indicating the measurement results;
Based on the measurement result acquired by the acquisition unit, comprising a calculation unit that calculates the operating time of the facility,
The facility is a welder;
The measuring device measures a current flowing through the corresponding equipment, transmits a radio signal including the measurement information indicating a measurement result,
The management device, wherein the calculation unit integrates a time when the current value measured by the measurement device is greater than a predetermined threshold at a predetermined cycle, and calculates the integrated time as the operation time.

2 Worker 3 Equipment 10 Access point 11 Measuring device 12 Distribution board 13 Breaker 14 Power line 15 Output line 16 Ground line 17 Torch 18 Work object 21 Acquisition part 22 Calculation part 24 Abnormality judgment part 25 Display part 101 Management apparatus 301 Equipment Monitoring system

Claims

A plurality of measuring devices that are provided corresponding to a plurality of facilities, measure the corresponding facilities, and transmit radio signals including measurement information indicating measurement results;
A facility monitoring system comprising: a management device that acquires a measurement result by the measurement device and calculates an operation time of the facility based on the acquired measurement result.
The management device calculates the operation time based on a magnitude relationship between the measurement result and a threshold value, and updates the threshold value based on the measurement result when the facility is not in operation. The facility monitoring system described.
3. The facility monitoring system according to claim 1 or 2, wherein the management device determines an abnormality of a product obtained by using the facility based on the measurement result.
An acquisition unit that is provided corresponding to each of a plurality of facilities, performs measurement on the corresponding facilities, and acquires measurement results by a plurality of measurement devices that transmit wireless signals including measurement information indicating the measurement results;
A management device comprising: a calculation unit that calculates an operation time of the facility based on the measurement result acquired by the acquisition unit.
A management program used in a management device,
Computer
An acquisition unit that is provided corresponding to each of a plurality of facilities, performs measurement on the corresponding facilities, and acquires measurement results by a plurality of measurement devices that transmit wireless signals including measurement information indicating the measurement results;
Based on the measurement result acquired by the acquisition unit, a calculation unit that calculates the operating time of the facility,
Management program to function as