JP2021189750A - Factory facility monitoring system, factory facility monitoring method, and program - Google Patents

Abstract

To provide a mechanism capable of properly monitoring a situation change in a factory facility including plural drives.SOLUTION: A factory facility monitoring system 100 that monitors a situation change in a factory facility 110 including plural drives that are a carrier machine 111, deceleration machine 112, and electric motor 113 includes plural wireless temperature sensors 121 to 125 installed at plural points in the factory facility 110, a calculation unit 151 that calculates a temperature difference between temperatures measured by two temperature sensors out of the wireless temperature sensors 121 to 125, and a display device 170 that time-sequentially displays the temperature difference calculated by the calculation unit 151.SELECTED DRAWING: Figure 1

Description

The present invention relates to a factory equipment monitoring system and a factory equipment monitoring method for monitoring a state change of a factory equipment configured including a plurality of drive devices, and a program for causing a computer to execute a factory equipment monitoring method.

Conventionally, in order to monitor a change in the state of a drive device that is mechanically or electrically driven, the temperature of a plurality of points in the drive device has been measured. For example, in Patent Document 1, temperature sensors are arranged at a plurality of locations in an electric injection molding machine, and a warning message is displayed on a display unit when the temperature detected by the temperature sensor exceeds a set value. A monitoring device for an electric injection molding machine is described.

Japanese Unexamined Patent Publication No. 11-198207

The technique described in Patent Document 1 described above notifies an operator of an abnormality in an electric injection molding machine, which is a drive device, based on a temperature rise at a location where a temperature sensor is arranged. For example, a temperature sensor is arranged. It is difficult for the operator to grasp the abnormality of the internal mechanism of the electric injection molding machine. Further, the technique described in Patent Document 1 described above is intended for monitoring one drive device called an electric injection molding machine, and is applied to various facilities such as factory equipment including a plurality of drive devices. It is difficult to apply. That is, in the conventional technique, there is a problem that it is difficult to appropriately monitor the state change of the factory equipment configured including a plurality of drive devices.

The present invention has been made in view of such problems, and an object of the present invention is to provide a mechanism capable of appropriately monitoring a state change of a factory facility including a plurality of drive devices.

The factory equipment monitoring system of the present invention is a factory equipment monitoring system that monitors a state change of a factory equipment configured including a plurality of drive devices, and includes a plurality of temperature sensors installed at a plurality of locations of the factory equipment. It has a calculation unit for calculating the temperature difference of the temperature measured by two of the plurality of temperature sensors, and a display unit for displaying the temperature difference calculated by the calculation unit in time series. ..
Another aspect of the factory equipment monitoring system of the present invention is a factory equipment monitoring system that monitors a state change of factory equipment configured to include a plurality of drive devices of the same type, and is installed in each of the plurality of drive devices. A plurality of drive device temperature sensors, an environmental temperature sensor that measures the ambient temperature around the factory equipment, and each temperature at a plurality of temperatures measured by the plurality of drive device temperature sensors and measured by the environmental temperature sensor. It has a calculation unit for calculating a plurality of temperature differences which are differences from the calculated temperature, and a display unit for displaying the plurality of temperature differences calculated by the calculation unit in chronological order.
The present invention also includes a factory equipment monitoring method using the factory equipment monitoring system described above, and a program for causing a computer to execute the factory equipment monitoring method.

According to the present invention, it is possible to appropriately monitor changes in the state of factory equipment configured to include a plurality of drive devices.

It is a schematic diagram which shows an example of the schematic structure of the factory equipment monitoring system which concerns on 1st Embodiment of this invention. It is a figure which shows the 1st Embodiment of this invention and shows an example of the time series graph of the temperature difference displayed on the display device of FIG. It is a flowchart which shows an example of the processing procedure of the factory equipment monitoring method by the factory equipment monitoring system which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows an example of the schematic structure of the factory equipment monitoring system which concerns on the 2nd Embodiment of this invention. It is a figure which shows the 2nd Embodiment of this invention, and shows an example of the time-series graph of a plurality of temperature differences displayed on the display device of FIG. It is a flowchart which shows an example of the processing procedure of the factory equipment monitoring method by the factory equipment monitoring system which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments (embodiments) for carrying out the present invention will be described with reference to the drawings.

(First Embodiment)
First, the first embodiment of the present invention will be described.

FIG. 1 is a schematic diagram showing an example of a schematic configuration of a factory equipment monitoring system 100 according to a first embodiment of the present invention. As shown in FIG. 1, the factory equipment monitoring system 100 includes a factory equipment 110, a plurality of wireless temperature sensors 121 to 125, a repeater 130, a receiver 140, a data acquisition device 150, an input device 160, and a display device 170. It is configured to have. The factory equipment monitoring system 100 is a system for monitoring a state change of the factory equipment 110.

The factory equipment 110 includes a conveyor 111, a speed reducer 112, and an electric motor 113, which are a plurality of different drive devices. The electric motor 113 is a drive device for a rotary machine that obtains mechanical power from electric energy, and outputs the generated power to the speed reducer 112. FIG. 1 illustrates the output-side bearing (output-side component) 1131 that supports the rotating shaft of the rotating machine in the motor 113. The speed reducer 112 is a drive device that reduces the rotation speed of the power input from the motor 113 by a gear or the like and outputs the speed to the conveyor 111. In the speed reducer 112, for example, the rotation speed is reduced by an input shaft into which power from the electric motor 113 is input, a set of gears for reducing the rotation speed of the power input to the input shaft, and the set of gears. It is configured to include an output shaft for outputting the generated power to the conveyor 111 and various bearings. In FIG. 1, in the speed reducer 112, an input side bearing (input side component) that supports the input shaft is included. ) 1122 is shown, and the output side bearing (output side component) 1121 that supports the output shaft is shown. The conveyor 111 is a drive device that conveys a product (for example, a steel product) from, for example, the front side of the paper surface to the back side of the paper surface by using the power input from the speed reducer 112. In FIG. 1, in this conveyor 111, a bearing on one end side (part on one end side) 1111 that supports one end side of a transport roller is shown, and a bearing on the other end side that supports the other end side of the transport roller (the other end). Side component) 1112 is shown.

The plurality of wireless temperature sensors 121 to 125 are wireless temperature sensors installed at a plurality of locations in the factory equipment 110. Specifically, the wireless temperature sensor 121 is a wireless temperature sensor installed on the bearing 1111 on the one end side in order to measure the temperature of the bearing 1111 on the one end side of the conveyor 111. Further, the wireless temperature sensor 122 is a wireless temperature sensor installed on the bearing 1112 on the other end side in order to measure the temperature of the bearing 1112 on the other end side of the conveyor 111. Further, the wireless temperature sensor 123 is a wireless temperature sensor installed on the output side bearing 1121 in order to measure the temperature of the output side bearing 1121 in the speed reducer 112. Further, the wireless temperature sensor 124 is a wireless temperature sensor installed on the bearing 1122 on the input side in order to measure the temperature of the bearing 1122 on the input side in the speed reducer 112. Further, the wireless temperature sensor 125 is a wireless temperature sensor installed in the bearing 1131 on the output side in order to measure the temperature of the bearing 1131 on the output side in the motor 113.

When the repeater 130 does not receive radio waves due to an obstacle between the plurality of wireless temperature sensors 121 to 125 and the receiving device 140, the repeater 130 is located between the plurality of wireless temperature sensors 121 to 125 and the receiving device 140. It is a device that is installed in and relays wireless communication.

The receiving device 140 wirelessly communicates with each wireless temperature sensor in the plurality of wireless temperature sensors 121 to 125 via the repeater 130, and the temperature measured from each wireless temperature sensor in the plurality of wireless temperature sensors 121 to 125. It is a device that receives information.

The data collecting device 150 is a device that collects temperature information measured from each of the radio temperature sensors in the plurality of radio temperature sensors 121 to 125 via the receiving device 140 and the repeater 130, and performs various processes. As shown in FIG. 1, the data acquisition device 150 includes a calculation unit 151, a determination unit 152, and a storage unit 153. The calculation unit 151 performs a process of calculating the temperature difference of the temperature measured by two wireless temperature sensors among the plurality of wireless temperature sensors 121 to 125. The determination unit 152 determines whether or not the temperature difference calculated by the calculation unit 151 is out of a predetermined range. The storage unit 153 stores various information necessary for the processing of the data collection device 150 in advance, and also stores various information obtained by the processing of the data collection device 150.

The input device 160 is a device that inputs information to the data collection device 150. For example, the input device 160 inputs to the data collection device 150 information instructing the start or end of monitoring of the factory equipment 110.

The display device 170 is a device that displays various types of information based on the control of the data collection device 150. Specifically, for example, the display device 170 performs a process of displaying the temperature difference calculated by the calculation unit 151 of the data collection device 150 in time series. Further, the display device 170 further performs a warning display process when, for example, the determination unit 152 of the data acquisition device 150 determines that the temperature difference calculated by the calculation unit 151 is out of a predetermined range.

FIG. 2 is a diagram showing a first embodiment of the present invention and showing an example of a time series graph of temperature difference displayed on the display device 170 of FIG. In FIG. 2, the horizontal axis indicates the elapsed time representing the flow of time in the direction from the left side to the right side, and the vertical axis indicates + on the upper side of 0 and-on the lower side of 0. The temperature difference (° C) is shown.

The time-series graph 301 shown in FIG. 2 is a time-series graph in which the temperature difference between the temperatures measured by the two radio temperature sensors 121 and 122 calculated by the calculation unit 151 is calculated. Specifically, this time-series graph 301 shows the temperature measured by the radio temperature sensor 121 installed on the bearing 1111 on one end side of the conveyor 111, and the radio installed on the bearing 1112 on the other end side of the conveyor 111. A time series graph of the temperature difference obtained by subtracting the temperature measured by the temperature sensor 122 is shown. By displaying the time series graph 301 shown in FIG. 2 on the display device 170, for example, the worker of the factory equipment 110 can check the presence or absence of a state change (for example, an abnormality such as a failure or deterioration) of the internal mechanism of the conveyor 111. Can be grasped.

The time-series graph 302 shown in FIG. 2 is a time-series graph in which the temperature difference between the temperatures measured by the two radio temperature sensors 123 and 124 calculated by the calculation unit 151 is calculated. Specifically, in this time series graph 302, from the temperature measured by the radio temperature sensor 123 installed in the bearing 1121 on the output side of the speed reducer 112, the radio temperature installed in the bearing 1122 on the input side of the speed reducer 112. A time series graph of the temperature difference minus the temperature measured by the sensor 124 is shown. By displaying the time-series graph 302 shown in FIG. 2 on the display device 170, for example, the worker of the factory equipment 110 can check the presence or absence of a state change (for example, an abnormality such as a failure or deterioration) of the internal mechanism of the speed reducer 112. Can be grasped.

The time-series graph 303 shown in FIG. 2 is a time-series graph in which the temperature difference between the temperatures measured by the two radio temperature sensors 124 and 125 calculated by the calculation unit 151 is calculated. Specifically, this time series graph 303 was measured from the wireless temperature sensor 124 installed on the input side bearing 1122 of the speed reducer 112 to the wireless temperature sensor 125 installed on the output side bearing 1131 of the motor 113. A time series graph of the temperature difference minus the temperature is shown. By displaying the time series graph 303 shown in FIG. 2 on the display device 170, for example, the worker of the factory equipment 110 goes from the output side bearing 1131 in the motor 113 to the input side bearing 1122 in the speed reducer 112. It is possible to grasp the presence or absence of a state change (for example, an abnormality such as a failure or deterioration) of the power transmission mechanism. That is, by displaying the time series graph 303 shown in FIG. 2 on the display device 170, the presence or absence of a state change (for example, an abnormality such as a failure or deterioration) of the power transmission mechanism over two different drive devices in the factory equipment 110. Can be notified.

In the example shown in FIG. 2, the calculation unit 151 sets a plurality of groups related to the two radio temperature sensors for calculating the temperature difference for the plurality of radio temperature sensors 121 to 125, and two in the plurality of groups. Multiple temperature differences are calculated from the temperature sensor. Specifically, in the example shown in FIG. 2, the calculation unit 151 is a group of two wireless temperature sensors for calculating the temperature difference, and the two wireless temperature sensors installed at different locations of the same drive device ( The first group relating to the radio temperature sensors 121 and 122, the radio temperature sensors 123 and 124) and the second group relating to the two radio temperature sensors (radio temperature sensors 124 and 125) installed in each of the two different drive devices. It is set including the group of.

In the example shown in FIG. 2, the calculation unit 151 includes the temperature difference between the temperatures measured by the two radio temperature sensors 121 and 122 according to the time series graph 301, and the two radio temperature sensors 123 according to the time series graph 302. An example of calculating three temperature differences between the temperature difference of the temperature measured by the time series graph 303 and the temperature difference of the temperature measured by the two wireless temperature sensors 124 and 125 according to the time series graph 303 is shown. The present embodiment is not limited to this aspect. For example, in the present embodiment, the calculation unit 151, in addition to the above-mentioned three temperature differences, has a temperature difference of the temperatures measured by the two wireless temperature sensors 122 and 123 (for example, the temperature difference on the other end side of the conveyor 111). Further calculate (the temperature difference obtained by subtracting the temperature measured by the wireless temperature sensor 123 installed on the output side bearing 1121 of the speed reducer 112 from the temperature measured by the wireless temperature sensor 122 installed in the bearing 1112). Also, in this case, the display device 170 takes an aspect of displaying the time series graph in the temperature difference of the temperature measured by the two radio temperature sensors 122 and 123 in addition to the time series graphs 301 to 303 of the temperature difference. ..

Further, FIG. 2 shows a predetermined range 310 determined by the upper limit threshold value 311 and the lower limit threshold value 312 of the temperature difference. The determination unit 152 determines whether or not the temperature difference calculated by the calculation unit 151 is out of the predetermined range 310, and the display device 170 determines whether or not the temperature difference calculated by the calculation unit 151 is calculated by the determination unit 152. If it is determined that the temperature is out of the predetermined range 310, a warning display is further displayed. When it is determined by the determination unit 152 that the temperature difference calculated by the calculation unit 151 is out of the predetermined range 310 and a warning is displayed on the display device 170, for example, the worker of the factory equipment 110 has the temperature difference. It is possible to grasp that the mechanism of the factory equipment 110 may have a state change (for example, an abnormality such as a failure or deterioration). In the example shown in FIG. 2, since none of the time series graphs 301 to 303 of the temperature difference is out of the predetermined range 310, the warning display by the display device 170 is not performed.

FIG. 3 is a flowchart showing an example of a processing procedure of the factory equipment monitoring method by the factory equipment monitoring system 100 according to the first embodiment of the present invention. For example, when information instructing the start of monitoring of the factory equipment 110 is input from the input device 160 to the data collection device 150, the processing of the flowchart shown in FIG. 3 is started.

When the processing of the flowchart shown in FIG. 3 is started, first, in step S101, the data acquisition device 150 has a plurality of radios installed at a plurality of locations of the factory equipment 110 via the receiver 140 and the repeater 130. Information on the measured temperature is acquired from each of the temperature sensors 121 to 125.

Subsequently, in step S102, the calculation unit 151 of the data acquisition device 150 performs a process of calculating the temperature difference of the temperature measured by two of the plurality of wireless temperature sensors 121 to 125. For example, in the example shown in FIG. 2, the calculation unit 151 has a temperature difference between the temperatures measured by the two radio temperature sensors 121 and 122 according to the time series graph 301, and the two radio temperature sensors 123 according to the time series graph 302. And 124, a plurality of temperature differences between the temperature difference of the temperature measured by the two wireless temperature sensors 124 and 125 according to the time series graph 303 are calculated. Further, the data collecting device 150 associates the temperature difference information calculated in step S102 with the information on the elapsed time since, for example, the information instructing the start of monitoring of the factory equipment 110 is input from the input device 160. It is stored in the storage unit 153.

Subsequently, in step S103, the display device 170 performs a process of displaying the temperature difference calculated in step S102 in time series. For example, the display device 170 performs a process of displaying the time series graphs 301 to 303 of the temperature difference as shown in FIG.

Subsequently, in step S104, the determination unit 152 of the data acquisition device 150 determines whether or not the temperature difference calculated in step S102 is out of the predetermined range 310. For example, in the case of the example shown in FIG. 2, since none of the time series graphs 301 to 303 of the temperature difference is out of the predetermined range 310, in this case, a negative determination (NO) is made in step S104. Further, the data acquisition device 150 stores the information of the determination result in step S104 in the storage unit 153 in association with, for example, the above-mentioned temperature difference information and elapsed time information.

As a result of the determination in step S104, if the temperature difference calculated in step S102 is out of the predetermined range 310 (S104 / YES), the process proceeds to step S105.
Proceeding to step S105, the display device 170 processes the warning display. At this time, it is preferable that the display device 170 displays a warning clearly showing information related to the temperature difference outside the predetermined range 310.

When the process of step S105 is completed, or when it is determined in step S104 that the temperature difference calculated in step S102 does not deviate from the predetermined range 310 (S104 / NO), the process proceeds to step S106.
Proceeding to step S106, the data collecting device 150 determines whether or not to end the monitoring of the factory equipment 110 based on whether or not the information indicating the end of the monitoring of the factory equipment 110 is input from the input device 160, for example. judge. As a result of this determination, if the monitoring of the factory equipment 110 is not completed (S106 / NO), the process returns to step S101 and the processes after step S101 are performed again.

On the other hand, when the monitoring of the factory equipment 110 is terminated as a result of the determination in step S106 (S106 / YES), the processing of the flowchart shown in FIG. 3 is terminated.

As described above, in the factory equipment monitoring system 100 according to the first embodiment, in the calculation unit 151, two radios of the plurality of radio temperature sensors 121 to 125 installed at a plurality of locations of the factory equipment 110. The temperature difference of the temperature measured by the temperature sensor is calculated, and the temperature difference calculated by the calculation unit 151 is displayed in time series on the display device 170.
According to such a configuration, it is possible to appropriately monitor the state change of the factory equipment 110 configured including the conveyor 111, the speed reducer 112, and the electric motor 113, which are a plurality of different drive devices.

Further, in the factory equipment monitoring system 100 according to the first embodiment, since wireless sensors (wireless temperature sensors 121 to 125) are used as temperature sensors installed at a plurality of locations of the factory equipment 110, the wireless network is always used. Monitoring can be easily realized, and installation costs can be reduced.

(Second embodiment)
Next, a second embodiment of the present invention will be described.

FIG. 4 is a schematic diagram showing an example of a schematic configuration of the factory equipment monitoring system 200 according to the second embodiment of the present invention. As shown in FIG. 4, the factory equipment monitoring system 200 includes a factory equipment 210, a plurality of wireless drive device temperature sensors 221 to 223, a wireless environment temperature sensor 224, a repeater 230, a receiver 240, a data collection device 250, and an input device. It is configured to have 260 and a display device 270. The factory equipment monitoring system 200 is a system for monitoring a state change of the factory equipment 210.

The factory equipment 210 includes hydraulic pumps 211 to 213 and an oil tank 214, which are a plurality of drive devices of the same type. Each hydraulic pump in the plurality of hydraulic pumps 211 to 213 is, for example, a drive device driven by the power of a prime mover, and sucks the hydraulic oil of the oil tank 214 and discharges the pressurized oil. Further, in FIG. 4, in the hydraulic pumps 211 to 213, the bearings 211 to 2131 that support the drive shaft of the hydraulic pump are shown. Further, the oil tank 214 is a facility for storing hydraulic oil.

The plurality of wireless drive device temperature sensors 221 to 223 are wireless temperature sensors installed in each of the hydraulic pumps 211 to 213, which are a plurality of drive devices of the same type. Specifically, the wireless drive device temperature sensor 221 is a wireless temperature sensor installed in the bearing 2111 in order to measure the temperature of the bearing 2111 that supports the drive shaft in the hydraulic pump 211. Further, the wireless drive device temperature sensor 222 is a wireless temperature sensor installed on the bearing 2121 in order to measure the temperature of the bearing 2121 that supports the drive shaft in the hydraulic pump 212. Further, the wireless drive device temperature sensor 223 is a wireless temperature sensor installed in the bearing 2131 in order to measure the temperature of the bearing 2131 that supports the drive shaft in the hydraulic pump 213. In the example shown in FIG. 4, the plurality of wireless drive device temperature sensors 221 to 223 are installed in the same component called a bearing that supports the drive shaft in each of the plurality of hydraulic pumps 211 to 213.

The wireless environmental temperature sensor 224 is a wireless temperature sensor installed in the atmosphere around the factory equipment 210 in order to measure the environmental temperature around the factory equipment 210.

The repeater 230 has a plurality of wireless drive device temperature sensors when radio waves do not reach due to an obstacle between the plurality of wireless drive device temperature sensors 221 to 223 and the wireless environment temperature sensor 224 and the receiver device 240. It is a device installed between 221 to 223 and the wireless environment temperature sensor 224 and the receiving device 240 to relay wireless communication.

The receiving device 240 wirelessly communicates with each of the wireless temperature sensors in the plurality of wireless drive device temperature sensors 221 to 223 and the wireless environment temperature sensor 224 via the repeater 230, and the plurality of wireless drive device temperature sensors 221 to 223 and It is a device that receives the information of the temperature measured from each wireless temperature sensor in the wireless environment temperature sensor 224.

The data acquisition device 250 collects temperature information measured from each of the wireless temperature sensors in the plurality of wireless drive device temperature sensors 221 to 223 and the wireless environment temperature sensor 224 via the receiver 240 and the repeater 230, and various types of data acquisition devices 250 are used. It is a device that performs the processing of. As shown in FIG. 4, the data acquisition device 250 includes a calculation unit 251, a determination unit 252, and a storage unit 253. The calculation unit 251 calculates a plurality of temperature differences, which are the differences between the respective temperatures at the plurality of temperatures measured by the plurality of wireless drive device temperature sensors 221 to 223 and the temperature measured by the wireless environmental temperature sensor 224. I do. The determination unit 252 determines whether or not the temperature difference calculated by the calculation unit 251 is out of a predetermined range. The storage unit 253 stores various information necessary for the processing of the data collection device 250 in advance, and also stores various information obtained by the processing of the data collection device 250.

The input device 260 is a device that inputs information to the data collection device 250. For example, the input device 260 inputs information instructing the data collection device 250 to start or end monitoring of the factory equipment 210.

The display device 270 is a device that displays various types of information based on the control of the data collection device 250. Specifically, for example, the display device 270 performs a process of displaying a plurality of temperature differences calculated by the calculation unit 251 of the data collection device 250 in time series. Further, the display device 270 further performs a warning display process when, for example, the determination unit 252 of the data acquisition device 250 determines that the temperature difference calculated by the calculation unit 251 is out of a predetermined range.

FIG. 5 shows a second embodiment of the present invention, and is a diagram showing an example of a time series graph of a plurality of temperature differences displayed on the display device 270 of FIG. In FIG. 4, the horizontal axis indicates the elapsed time representing the flow of time in the direction from the left side to the right side, and the vertical axis indicates + on the upper side of 0 and-on the lower side of 0. The temperature difference (° C) is shown.

The time series graph 401 shown in FIG. 5 was measured by the wireless environment temperature sensor 224 from the temperature measured by the wireless drive device temperature sensor 221 installed in the bearing 2111 of the hydraulic pump 211 calculated by the calculation unit 251. A time series graph of the temperature difference minus the temperature is shown. By displaying the time series graph 401 shown in FIG. 5 on the display device 270, for example, the worker of the factory equipment 210 can check the state of the hydraulic pump 211 without considering the environmental noise caused by the fluctuation of the environmental temperature depending on the season, for example. It is possible to grasp the presence or absence of a change (for example, an abnormality such as a failure or deterioration).

The time series graph 402 shown in FIG. 5 was measured by the wireless environment temperature sensor 224 from the temperature measured by the wireless drive device temperature sensor 222 installed on the bearing 2121 of the hydraulic pump 212, which was calculated by the calculation unit 251. A time series graph of the temperature difference minus the temperature is shown. By displaying the time series graph 402 shown in FIG. 5 on the display device 270, for example, the worker of the factory equipment 210 can check the state of the hydraulic pump 212 without considering the environmental noise due to the fluctuation of the environmental temperature depending on the season, for example. It is possible to grasp the presence or absence of a change (for example, an abnormality such as a failure or deterioration).

The time series graph 403 shown in FIG. 5 was measured by the wireless environment temperature sensor 224 from the temperature measured by the wireless drive device temperature sensor 223 installed in the bearing 2131 of the hydraulic pump 213 calculated by the calculation unit 251. A time series graph of the temperature difference minus the temperature is shown. By displaying the time series graph 403 shown in FIG. 5 on the display device 270, for example, the worker of the factory equipment 210 can check the state of the hydraulic pump 213 without considering the environmental noise due to the fluctuation of the environmental temperature depending on the season, for example. It is possible to grasp the presence or absence of a change (for example, an abnormality such as a failure or deterioration).

Further, in FIG. 5, the period during which the factory equipment 210 is stopped, that is, the period during which the hydraulic pumps 211 to 213 are stopped is shown as the stop period 420. Further, FIG. 5 shows a predetermined range 410 determined by the upper limit threshold value 411 and the lower limit threshold value 412 of the temperature difference. The determination unit 252 determines whether or not the temperature difference calculated by the calculation unit 251 is out of the predetermined range 410 in the period after the stop period 420 (driving period of the factory equipment 210), and displays the temperature difference. When the determination unit 252 determines that the temperature difference calculated by the calculation unit 251 is out of the predetermined range 410, the apparatus 270 further displays a warning. When the determination unit 252 determines that the temperature difference calculated by the calculation unit 251 is out of the predetermined range 410 and a warning is displayed on the display device 270, for example, the worker of the factory equipment 210 has the temperature difference. It is possible to grasp that the hydraulic pump of the factory equipment 210 may have a state change (for example, an abnormality such as a failure or deterioration). In the example shown in FIG. 5, among the temperature difference time series graphs 401 to 403, the temperature difference time series graph 403 is out of the predetermined range 410, so that the display device 270 displays a warning. Become.

By displaying the time series graphs 401 to 403 shown in FIG. 5 on the display device 270, for example, the worker of the factory equipment 210 does not consider the environmental noise due to the fluctuation of the environmental temperature depending on the season (for example, the season). It is possible to monitor while comparing the state changes (for example, abnormalities such as failure and deterioration) of a plurality of hydraulic pumps of the same type (for example, abnormalities such as failure and deterioration) of a plurality of hydraulic pumps of the same type (without causing the need to change the predetermined range 410 according to the situation). ..

FIG. 6 is a flowchart showing an example of a processing procedure of the factory equipment monitoring method by the factory equipment monitoring system 200 according to the second embodiment of the present invention. For example, when information instructing the start of monitoring of the factory equipment 210 is input from the input device 260 to the data collection device 250, the processing of the flowchart shown in FIG. 6 is started.

When the processing of the flowchart shown in FIG. 6 is started, first, in step S201, a plurality of data collecting devices 250 are installed in each of the plurality of hydraulic pumps 211 to 213 via the receiving device 240 and the repeater 230. The measured temperature information is acquired from the wireless drive device temperature sensors 221 to 223 and the wireless environmental temperature sensor 224 installed in the atmosphere.

Subsequently, in step S202, the calculation unit 251 of the data acquisition device 250 has the respective temperatures at the plurality of temperatures measured by the plurality of wireless drive device temperature sensors 221 to 223 and the temperature measured by the wireless environmental temperature sensor 224. Performs a process of calculating a plurality of temperature differences which are differences from the above. For example, in the example shown in FIG. 5, the calculation unit 251 has a temperature difference between the temperatures measured by the wireless drive device temperature sensor 221 and the wireless environment temperature sensor 224 according to the time series graph 401, and the wireless drive according to the time series graph 402. A plurality of temperature differences between the temperature measured by the device temperature sensor 222 and the wireless environment temperature sensor 224 and the temperature difference measured by the wireless drive device temperature sensor 223 and the wireless environment temperature sensor 224 according to the time series graph 403. Calculate the temperature difference. Further, the data collecting device 250 corresponds to the information of the plurality of temperature differences calculated in step S202 with the information of the elapsed time from the input of, for example, the information instructing the start of monitoring of the factory equipment 210 from the input device 260. It is attached and stored in the storage unit 253.

Subsequently, in step S203, the display device 270 performs a process of displaying the plurality of temperature differences calculated in step S202 in chronological order. For example, the display device 270 performs a process of displaying the time series graphs 401 to 403 of the temperature difference as shown in FIG.

Subsequently, in step S204, the determination unit 252 of the data acquisition device 250 determines whether or not the temperature difference calculated in step S202 is out of the predetermined range 410. For example, in the case of the example shown in FIG. 5, for example, in the period after the stop period 420, since the time series graph 403 of the time series graphs 401 to 403 of the temperature difference is out of the predetermined range 410, in this case, In step S204, an affirmative determination (YES) is made. Further, the data acquisition device 250 stores the information of the determination result in step S204 in the storage unit 253 in association with, for example, the above-mentioned information on the plurality of temperature differences and the information on the elapsed time.

As a result of the determination in step S204, if the temperature difference calculated in step S202 is out of the predetermined range 410 (S204 / YES), the process proceeds to step S205.
Proceeding to step S205, the display device 270 processes the warning display. At this time, it is preferable that the display device 270 displays a warning clearly showing information related to the temperature difference outside the predetermined range 410.

When the process of step S205 is completed, or when it is determined in step S204 that the temperature difference calculated in step S202 does not deviate from the predetermined range 410 (S204 / NO), the process proceeds to step S206.
Proceeding to step S206, the data collecting device 250 determines whether or not to end the monitoring of the factory equipment 210 based on whether or not the information indicating the end of the monitoring of the factory equipment 210 is input from the input device 260, for example. judge. As a result of this determination, if the monitoring of the factory equipment 210 is not completed (S206 / NO), the process returns to step S201 and the processing after step S201 is performed again.

On the other hand, as a result of the determination in step S206, when the monitoring of the factory equipment 210 is terminated (S206 / YES), the processing of the flowchart shown in FIG. 6 is terminated.

As described above, in the factory equipment monitoring system 200 according to the second embodiment, in the calculation unit 251, a plurality of wireless drive device temperature sensors 221 to 223 installed in each of the plurality of hydraulic pumps 211 to 213 of the same type. A plurality of temperature differences, which are the differences between the respective temperatures at the plurality of temperatures measured in the above and the temperature measured by the wireless environment temperature sensor 224 installed in the atmosphere around the factory equipment 210, are calculated and displayed. In 270, a plurality of temperature differences calculated by the calculation unit 251 are displayed in chronological order.
According to such a configuration, it is possible to appropriately monitor the state change of the factory equipment 210 including the hydraulic pumps 211 to 213 which are a plurality of drive devices of the same type. Further, in the factory equipment monitoring system 200 according to the second embodiment, the plurality of wireless drive device temperature sensors 221 to 223 are driven by the same parts (specifically, in each of the plurality of hydraulic pumps 211 to 213 of the same type). Since it is installed on the bearing that supports the shaft), it is possible to more appropriately monitor the state change of the factory equipment 210.

Further, in the factory equipment monitoring system 200 according to the second embodiment, a wireless sensor (wireless) is used as a temperature sensor installed in each of the plurality of hydraulic pumps 211 to 213 and a temperature sensor installed in the atmosphere around the factory equipment 210. Since the drive device temperature sensor 221 to 223 and the wireless environment temperature sensor 224) are used, constant monitoring by a wireless network can be easily realized, and the installation cost can be reduced.

(Other embodiments)
In the first embodiment described above, an example in which the wireless temperature sensors 121 to 125 are installed at a plurality of locations of the factory equipment 110 is shown, but the wireless environmental temperature sensor 224 in the second embodiment is further installed and FIG. The information of the time series graphs 301 to 303 of the temperature difference shown in the above may be stored in the storage unit 153 in association with the information of the environmental temperature measured by the installed wireless environmental temperature sensor 224. According to such a configuration, it is possible to appropriately monitor the state change of the factory equipment 110, for example, in consideration of the environmental noise caused by the change of the environmental temperature depending on the season.

Further, in the first embodiment and the second embodiment described above, when monitoring the state change of the factory equipment, a mode in which a temperature sensor for measuring the temperature at each location of the factory equipment is installed is shown. In addition to the temperature sensor, a vibration sensor that measures the vibration at each location of the factory equipment is further installed, and the information in the time series graphs 301 to 303 of the temperature difference shown in FIG. 2 and the time series graph 401 to the temperature difference shown in FIG. 5 are installed. The information of the 403 may be stored in the storage unit 153 or the storage unit 253 in association with the vibration information measured by the installed vibration sensor. According to this configuration, changes in the state of factory equipment can be monitored in a complex manner due to temperature differences and vibrations.

In the first embodiment and the second embodiment described above, an example of installing a wireless temperature sensor for measuring the temperature on the bearing of each drive device in a plurality of drive devices constituting the factory equipment will be described. However, the present invention is not limited to this form. For example, a wireless temperature sensor is installed not only in the bearing of each drive device but also in the piping (for example, the inlet and outlet of the filter device) connecting the hydraulic pumps 211 to 213 and the oil tank 214 shown in FIG. 4, and the temperature thereof is measured. The form to be measured is also applicable to the present invention.

The present invention provides a system or apparatus via a network or a storage medium to provide a program that realizes one or more functions of the first embodiment or the second embodiment described above and the processing of the flowchart shown in FIG. 3 or 6. It can also be realized by the process of reading and executing a program by one or more processors in the computer of the system or device.
This program and a computer-readable storage medium that stores the program are included in the present invention.

It should be noted that the above-described embodiments of the present invention are merely examples of embodiment of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. Is. That is, the present invention can be implemented in various forms without departing from the technical idea or its main features.

100: Factory equipment monitoring system, 110: Factory equipment, 111: Conveyor, 112: Reducer, 113: Electric motor, 121-125: Wireless temperature sensor, 130: Repeater, 140: Receiver, 150: Data collection device, 151: Calculation unit, 152: Judgment unit, 160: Input device, 170: Display device, 200: Factory equipment monitoring system, 210: Factory equipment, 211-213: Hydraulic pump, 214: Oil tank, 221-223: Wireless drive Device temperature sensor, 224: Wireless environment temperature sensor, 230: Repeater, 240: Receiver, 250: Data collection device, 251: Calculation unit, 252: Judgment unit, 260: Input device, 270: Display device

Claims (13)

It is a factory equipment monitoring system that monitors changes in the state of factory equipment that is configured to include multiple drive devices.
Multiple temperature sensors installed at multiple locations in the factory equipment,
A calculation unit that calculates the temperature difference between the temperatures measured by two of the plurality of temperature sensors, and a calculation unit.
A display unit that displays the temperature difference calculated by the calculation unit in chronological order, and a display unit.
A factory equipment monitoring system characterized by having. The factory equipment monitoring system according to claim 1, wherein the calculation unit calculates a temperature difference between the temperatures measured by the two temperature sensors installed at different locations of the same drive device. The factory equipment monitoring system according to claim 1, wherein the calculation unit calculates a temperature difference between the temperatures measured by the two temperature sensors installed in each of the two different drive devices. The calculation unit sets a plurality of groups related to the two temperature sensors for the plurality of temperature sensors, and calculates the plurality of temperature differences from the two temperature sensors in the plurality of groups.
The factory equipment monitoring system according to any one of claims 1 to 3, wherein the display unit displays the plurality of temperature differences calculated by the calculation unit in time series. The plurality of groups related to the two temperature sensors include
A group of the two temperature sensors installed at different locations on the same drive unit, and
A group relating to the two temperature sensors installed in each of the two different drive devices,
The factory equipment monitoring system according to claim 4, wherein the factory equipment monitoring system is included. The factory equipment monitoring system according to any one of claims 1 to 5, wherein the plurality of temperature sensors are wireless sensors. It is a factory equipment monitoring system that monitors changes in the state of factory equipment that is configured to include multiple drives of the same type.
A plurality of drive device temperature sensors installed in each of the plurality of drive devices,
An environmental temperature sensor that measures the environmental temperature around the factory equipment,
A calculation unit that calculates a plurality of temperature differences, which is the difference between each temperature at a plurality of temperatures measured by the plurality of drive device temperature sensors and the temperature measured by the environmental temperature sensor, and a calculation unit.
A display unit that displays the plurality of temperature differences calculated by the calculation unit in chronological order, and a display unit.
A factory equipment monitoring system characterized by having. The factory equipment monitoring system according to claim 7, wherein the plurality of drive device temperature sensors are installed in the same component in each of the plurality of drive devices. The factory equipment monitoring system according to claim 7 or 8, wherein the plurality of drive device temperature sensors and the environmental temperature sensor are wireless sensors. The factory equipment monitoring system according to any one of claims 1 to 9, wherein the display unit further displays a warning when the temperature difference is out of a predetermined range. It is a factory equipment monitoring method using a factory equipment monitoring system that monitors changes in the state of factory equipment that is configured to include multiple drive devices.
The factory equipment monitoring system includes a plurality of temperature sensors installed at a plurality of locations of the factory equipment.
A calculation step for calculating the temperature difference between the temperatures measured by two of the plurality of temperature sensors, and
A display step that displays the temperature difference calculated in the calculation step in chronological order, and
A factory equipment monitoring method characterized by having. It is a factory equipment monitoring method using a factory equipment monitoring system that monitors changes in the state of factory equipment that is configured to include multiple drives of the same type.
The factory equipment monitoring system includes a plurality of drive unit temperature sensors installed in each of the plurality of drive units, and an environmental temperature sensor for measuring the environmental temperature around the factory equipment.
A calculation step for calculating a plurality of temperature differences, which is the difference between each temperature at a plurality of temperatures measured by the plurality of drive device temperature sensors and the temperature measured by the environmental temperature sensor, and a calculation step.
A display step that displays the plurality of temperature differences calculated in the calculation step in chronological order, and
A factory equipment monitoring method characterized by having. A program for causing a computer to perform each step in the factory equipment monitoring method according to claim 11 or 12.

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