WO2013088841A1 - Appareil et procédé de diagnostic - Google Patents

Appareil et procédé de diagnostic Download PDF

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Publication number
WO2013088841A1
WO2013088841A1 PCT/JP2012/077379 JP2012077379W WO2013088841A1 WO 2013088841 A1 WO2013088841 A1 WO 2013088841A1 JP 2012077379 W JP2012077379 W JP 2012077379W WO 2013088841 A1 WO2013088841 A1 WO 2013088841A1
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WO
WIPO (PCT)
Prior art keywords
power consumption
deterioration
devices
hydraulic pump
deteriorated
Prior art date
Application number
PCT/JP2012/077379
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English (en)
Japanese (ja)
Inventor
向川　信一
雅彦 俣野
禎之 生谷
優 木岡
久野　勉
忠康 河村
耕基 妹尾
Original Assignee
オムロン株式会社
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Publication date
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Publication of WO2013088841A1 publication Critical patent/WO2013088841A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0208—Power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/80—Diagnostics

Definitions

  • the present invention relates to a diagnostic apparatus, a diagnostic method, and a diagnostic program for diagnosing device deterioration.
  • the blade life diagnosis apparatus described in Patent Document 1 is set based on an active power waveform measured from a motor during machining of a workpiece by a blade and an effective power waveform measured from a motor during machining of a workpiece by a new blade.
  • the determined reference active power waveform is compared by pattern recognition to determine the tool life.
  • the conventional technology as described above can be applied when there is a correlation between the lifetime of one device A and the active power waveform for operating the device A.
  • the present invention has been made in order to solve the above-described problems, and an object of the present invention is to diagnose a degree of deterioration of each device in a system in which a plurality of devices operate in cooperation.
  • An apparatus, a diagnostic method, and a diagnostic program are provided.
  • the diagnosis apparatus of the present invention operates in cooperation with N (an integer satisfying 2 ⁇ N ⁇ M ⁇ 1) of M (an integer satisfying M ⁇ 3) devices.
  • a diagnostic device for diagnosing device degradation in a system that communicates with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices;
  • Measurement data acquisition means for acquiring measurement data indicating the amount of power consumption for each device measured by the watt hour meter for each combination of N devices among the M devices, and deteriorated devices
  • Degradation equipment specifying means for specifying the equipment, and when the equipment is deteriorated, the power consumption is increased and the processing capacity is reduced, and the degraded equipment specification means is provided for each of the M devices.
  • the diagnosis method of the present invention operates in such a manner that N (integer satisfying 2 ⁇ N ⁇ M ⁇ 1) of the M (integer satisfying M ⁇ 3) devices operate in cooperation.
  • a communication method for diagnosing degradation of equipment in a system that communicates with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices;
  • a measurement data acquisition step for acquiring measurement data indicating power consumption for each device measured by the watt hour meter for each of all combinations of N devices among the M devices, and a deteriorated device
  • a deterioration equipment specifying step for specifying the equipment, and when the equipment deteriorates, the power consumption increases and the processing capacity decreases.
  • the M equipment (A) Extracting the power consumption of the device in each combination including the device from the measurement data acquired in the measurement data acquisition step, and (b) extracting the plurality of extracted power consumptions.
  • the minimum amount of power consumption is specified as a deterioration evaluation value for the device, and (c) it is determined that the device is deteriorated when the deterioration evaluation value is equal to or greater than a predetermined threshold.
  • the diagnosis apparatus of the present invention operates in cooperation with N (an integer satisfying 2 ⁇ N ⁇ M ⁇ 1) of M (an integer satisfying M ⁇ 3) devices.
  • a diagnostic device for diagnosing device degradation in a system that communicates with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices;
  • Measurement data acquisition means for acquiring measurement data indicating the amount of power consumption for each device measured by the watt hour meter for each combination of N devices among the M devices, and deteriorated devices
  • Degradation equipment specifying means for specifying, and when the equipment is deteriorated, the power consumption is not increased and the processing capacity is reduced, and the degradation equipment specifying means is (a) the M For each device, ( ) Extracting the power consumption of the device in each combination including the device from the measurement data acquired by the measurement data acquisition means, and (ii) maximizing the consumption from the extracted plurality of power consumptions
  • the amount of electric power is specified as a deterioration evaluation value for the device, and
  • the diagnosis method of the present invention operates in such a manner that N (integer satisfying 2 ⁇ N ⁇ M ⁇ 1) of the M (integer satisfying M ⁇ 3) devices operate in cooperation.
  • a communication method for diagnosing degradation of equipment in a system that communicates with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices;
  • a measurement data acquisition step for acquiring measurement data indicating power consumption for each device measured by the watt hour meter for each of all combinations of N devices among the M devices, and a deteriorated device
  • a degradation facility identification step for identifying the equipment, and when the equipment is degraded, the power consumption is not increased and the processing capacity is reduced.
  • the M Equipment For each (i) extracting the power consumption amount of the device in each combination including the device from the measurement data acquired in the measurement data acquisition step, and (ii) extracting the plurality of extracted power consumption amounts
  • the maximum power consumption amount is specified as a deterioration evaluation value for the device, and (b) the maximum value among the deterioration evaluation values specified for each of the M devices is used as a reference value. It is determined that the device corresponding to the deterioration evaluation value having a difference between and a predetermined threshold value or more is deteriorated.
  • the present invention has an effect that the degree of deterioration of each device can be determined in a system in which a plurality of devices cooperate to give a constant output.
  • Embodiments according to the present invention relate to a diagnosis device and a diagnosis method for diagnosing device deterioration in a system in which a plurality of devices cooperate to apply a predetermined amount of pressure to a roll for rolling iron (rolling roll).
  • the device is, for example, a hydraulic pump.
  • a case of a hydraulic pump will be described as an example.
  • At the steelworks in order not to stop the operation of the rolling roll, at least one spare hydraulic pump is prepared so that even if one of the hydraulic pumps stops due to a failure, an alternative hydraulic pump can be operated immediately.
  • M an integer satisfying M ⁇ 3
  • N an integer satisfying 2 ⁇ N ⁇ M ⁇ 1 units cooperate to apply a predetermined amount of pressure to a roll for rolling iron.
  • the hydraulic pump includes a type in which power consumption increases due to deterioration and a type in which power consumption decreases due to deterioration.
  • the type in which power consumption increases due to deterioration is, for example, a swash plate type axial piston pump.
  • the power consumption increases due to the deterioration of the hydraulic pump because the internal resistance increases due to the decrease in performance, and the amount of oil sent to the outside in the state where the performance deteriorates tries to be the same as before the deterioration.
  • the cause is to compensate for the decrease of.
  • a type in which power consumption decreases due to deterioration is, for example, a gear pump.
  • the reason why power consumption decreases due to deterioration is that, for example, the amount of oil sent to the outside decreases due to gear deterioration.
  • FIG. 1 is a diagram illustrating an example of an operating facility diagnosis system according to the first embodiment.
  • the operating facility diagnosis system 1 includes a plurality of hydraulic pumps 10, a plurality of electric motors 20, a plurality of watt-hour meters 30, and a diagnosis device 100.
  • the hydraulic pump 10 is a swash plate type axial piston pump that is a type in which power consumption increases due to deterioration.
  • Diagnostic device 100 is connected to a plurality of watt-hour meters 30 and can communicate with each other.
  • the connection form may be either wired or wireless, but here it is wired.
  • the electric motor 20 is connected to each of the plurality of watt-hour meters 30, and the hydraulic pump 10 is connected to each of the plurality of electric motors 20.
  • the hydraulic pump 10 converts the driving force supplied from the electric motor 20 into pressure and operates an external device.
  • the watt hour meter 30 measures the power consumption consumed by driving the electric motor 20 and outputs measurement data indicating the measured power consumption to the diagnostic device 100.
  • FIG. 2 is a diagram showing an external device that is an operation target of the hydraulic pump.
  • the external device 200 that is an operation target of the hydraulic pump 10 includes two hydraulic cylinders 210 and four rolling rolls 220.
  • the four rolling rolls 220 form one set with the two rolling rolls 220, and the two sets are arranged at a predetermined interval.
  • the two hydraulic cylinders 210 are arranged at opposing positions, and force is applied to the two sets of rolling rolls 220 in a direction of narrowing a predetermined interval formed by the two sets of rolling rolls 220 by the pressure from the hydraulic pump 10. .
  • force can be applied from two opposing directions to the lump (billet) having thermoplasticity that passes between the two sets of rolling rolls 220, the lump can be formed thinly.
  • any combination of selecting N (an integer satisfying 2 ⁇ N ⁇ M ⁇ 1) units from M (an integer satisfying M ⁇ 3) hydraulic pumps 10 is selected. Is set as the hydraulic pump for operation, and the remaining (MN) bases function as a spare hydraulic pump.
  • the hydraulic pump 10 is deteriorated due to an increase in operating time, the number of operations, and the like. For this reason, it is possible to change the appropriate setting of the combination that does not include the deteriorated hydraulic pump among all the combinations that select N from the M hydraulic pumps 10 as the operating hydraulic pump.
  • the setting change of the hydraulic pump for operation is subject to the stop period (maintenance period) of the operating equipment, and the maintenance period is, for example, a cycle of 2 weeks to 1 month.
  • the maintenance period work is performed in preparation for the start of operation of the operating equipment.
  • the user sequentially sets all combinations for selecting N units from the M hydraulic pumps 10 and actually operates them (test operation).
  • the diagnostic device 100 collects measurement data from the watt-hour meter 30 corresponding to the set hydraulic pump for operation in the test operation.
  • the diagnostic apparatus 100 selects a combination of N hydraulic pumps 10 that can be operated with the minimum power consumption, based on measurement data for all combinations that select N of M hydraulic pumps 10, and is deteriorated.
  • the hydraulic pump 10 is specified, and notification that maintenance is required is given.
  • the diagnostic device 100 is configured so that the hydraulic pump is in a period other than the maintenance period, that is, in a normal operation period in which pressure is applied to the rolling roll 220 by a combination of N hydraulic pumps that can be operated with the minimum power set in the maintenance period. It also has a function of detecting 10 abnormalities and notifying an alarm.
  • FIG. 3 is a block diagram illustrating an example of the configuration of the diagnostic apparatus according to the first embodiment.
  • the diagnostic apparatus 100 includes a control unit 101, a storage unit 111 for storing a program executed by the control unit 101, a data communication control unit (communication means) 113, and an operation unit 115. Is provided.
  • the control unit 101 is connected to the storage unit 111 and the data communication control unit 113, respectively, and controls the entire diagnostic apparatus 100.
  • the data communication control unit 113 receives measurement data generated in units of a predetermined time from each of the plurality of watt-hour meters 30. Further, the data communication control unit 113 has a serial interface terminal 117 for serial communication. The data communication control unit 113 transmits / receives data to / from an external device connected to the serial interface terminal 117 in accordance with an instruction from the control unit 101.
  • a memory card with a built-in flash memory can be connected to the serial interface terminal 117.
  • the control unit 101 can update the program by controlling the data communication control unit 113 to read a program to be executed by the control unit 101 from the memory card and store the program in the storage unit 111.
  • the control unit 101 includes a measurement data acquisition unit (measurement data acquisition unit) 121, a minimum power determination data generation unit 123, a deterioration determination data generation unit 127, a minimum power equipment specification unit 125, and a deteriorated equipment specification unit (deterioration equipment).
  • Specifying means 129, a threshold setting unit 131, and an alarm unit 133.
  • the measurement data acquisition unit 121 acquires measurement data in a predetermined time unit from the watt-hour meter 30 corresponding to the operating hydraulic pump 10.
  • the measurement data acquisition unit 121 outputs the measurement data acquired from the watt-hour meter 30 to the alarm unit 133 regardless of whether it is a maintenance period.
  • the measurement data acquisition unit 121 includes power consumption including device identification information of the hydraulic pump 10 corresponding to the watt hour meter 30 and power consumption indicated by the measurement data input from the watt hour meter 30 during the maintenance period. Generate quantity data.
  • the measurement data acquisition unit 121 stores, in the storage unit 111, power consumption data generated for all combinations of operating hydraulic pumps.
  • the predetermined time unit is, for example, a unit of 10 minutes to 60 minutes.
  • FIG. 4 is a diagram showing an example of power consumption data.
  • power consumption data stored in the storage unit 111 will be described as an example by setting all combinations for selecting two of the four hydraulic pumps 10 as operating hydraulic pumps.
  • the power consumption data 141 includes a power consumption record for each combination of all the operating hydraulic pumps.
  • the power consumption record includes a device identification information item, a power consumption amount item, and a date / time item.
  • the measurement data acquisition unit 121 generates power consumption amount data for all combinations of N hydraulic pumps and stores them in the storage unit 111.
  • the device identification information item includes a first device identification information item and a second device identification information item, and device identification information for each of the two hydraulic pumps for operation is set.
  • the device number assigned to the hydraulic pump 10 is used as device identification information.
  • the item of power consumption includes a first power consumption item corresponding to the first device identification information item and a second power consumption item corresponding to the second device identification information item.
  • the power consumption measured by the two watt-hour meters 30 corresponding to each of the two hydraulic pumps is set. In the date / time item, the measurement date / time of power consumption is set for each predetermined time unit, and in the power consumption item, the power consumption for each predetermined time unit is set for each date / time set in the date / time item. Is set.
  • the power consumption record for each combination of N hydraulic pumps 10 includes device identification information for identifying the hydraulic pumps 10 operated in the combination, and when the combination is operated in the combination. It includes the power consumption and the measurement date and time measured for each predetermined time unit.
  • the minimum power determination data generation unit 123 stores minimum power determination data for determining a combination of N hydraulic pumps 10 operating at minimum power in accordance with a minimum power specifying instruction input by the user to the operation unit 115. It is generated based on the power consumption data 141 stored in 111.
  • the minimum power determination data generation unit 123 generates minimum power determination data for each combination of N hydraulic pumps 10.
  • the minimum power determination data includes device identification information of each of the N hydraulic pumps operating in the corresponding combination, and a first integrated power consumption amount obtained by totaling the integrated power consumption amounts of the N hydraulic pumps in a predetermined period.
  • the minimum power determination data generation unit 123 uses the power consumption record (the first power consumption amount and the first power consumption amount) for the latest predetermined period (for example, 3 hours or 1 day) from the power consumption record for each combination of the N hydraulic pumps.
  • the first integrated power consumption can be calculated by extracting the second power consumption) and summing them.
  • the minimum power determination data generation unit 123 outputs minimum power determination data generated for all combinations of operating hydraulic pumps to the minimum power facility specification unit 125.
  • the minimum power facility specifying unit 125 sets, as all the minimum power determination data generated by the minimum power determination data generation unit 123, the minimum power determination data corresponding to the combination of the minimum powers with the smallest first accumulated power consumption amount. Identify.
  • the minimum power equipment specifying unit 125 includes the device identification information included in the minimum power determination data specified as the minimum power in the minimum power equipment specifying information indicating the combination of equipment that can be operated with the minimum power, and stores it in the storage unit 111. To do.
  • the deterioration determination data generation unit 127 displays deterioration determination data for determining a deteriorated hydraulic pump in the power consumption data 141 stored in the storage unit 111 in accordance with a deterioration facility determination instruction input to the operation unit 115 by the user. Generate based on.
  • the deterioration determination data generation unit 127 generates deterioration determination data for each of the M hydraulic pumps 10.
  • the deterioration determination data includes device identification information of the corresponding hydraulic pump 10 and integrated power consumption of the hydraulic pump 10 (hereinafter referred to as “second integrated power consumption”) in a predetermined period.
  • the degradation determination data generation unit 127 targets, for each combination of all the hydraulic pumps for operation, the device identification information of the hydraulic pump 10 for each combination of the hydraulic pumps 10 operated in the combination, A degradation determination data candidate including the second cumulative power consumption that is the cumulative power consumption of the hydraulic pump 10 is generated.
  • the degradation determination data generation unit 127 extracts the first power consumption amount or the second power consumption amount for the latest predetermined period (for example, 3 hours or 1 day) from the power consumption record for each combination of the N hydraulic pumps.
  • the second integrated power consumption can be calculated by summing them.
  • a combination ( M C N ) of selecting N units from the M hydraulic pumps 10 N times as many deterioration determination data candidates are generated.
  • the deterioration determination data generation unit 127 selects deterioration determination data candidates including device identification information indicating the hydraulic pump 10 from among ( M C N ⁇ N) deterioration determination data candidates. Extraction is performed, and the candidate having the smallest second integrated power consumption is identified from the extracted deterioration determination data candidates. Then, the deterioration determination data generation unit 127 employs, as the deterioration determination data, the deterioration determination data candidate specified for the M hydraulic pumps 10 with the second integrated power consumption as the minimum, and the second integrated power consumption. The deterioration determination data candidate that is not specified as the minimum is deleted. As a result, the same number of deterioration determination data as the M hydraulic pumps 10 are generated.
  • the deterioration determination data generation unit 127 outputs the M remaining deterioration determination data candidates finally remaining to the deterioration facility specifying unit 129 as deterioration determination data.
  • the deteriorated facility specifying unit 129 specifies the deteriorated facility based on the deterioration determination data input from the deterioration determination data generating unit 127 and the threshold data 143 stored in the storage unit 111. Specifically, the hydraulic pressure after deterioration of the hydraulic pump 10 specified by the deterioration determination data including the second integrated power consumption equal to or higher than the threshold T1 indicated by the threshold data 143 among the deterioration determination data input from the deterioration determination data.
  • the pump is specified as the pump, and the hydraulic pump 10 that is not so is specified as the hydraulic pump before deterioration.
  • the device identifying information of the hydraulic pump 10 included in the deterioration determining data is included in the maintenance request information indicating that maintenance is requested and stored in the storage unit 111. To do.
  • the deteriorated facility specifying unit 129 reads the maintenance request information from the storage unit 111 and performs the output process of the maintenance request information.
  • the output process includes, for example, a process of displaying maintenance request information on a display unit (not shown), a process of notifying the hydraulic pump 10 indicated by the maintenance request information by voice from a speaker (not shown), and an external device. There is a process of transmitting maintenance request information to the user.
  • the deteriorated facility specifying unit 129 stores a graph (see FIG. 5) and threshold data 143 generated based on the power consumption data 141 stored in the storage unit 111 in the storage unit 111 at regular intervals or at arbitrary timing. You may make it memorize
  • FIG. 5 are graphs showing an example of power consumption data in the first embodiment.
  • the horizontal axis of the graph indicates the measurement date and time.
  • the vertical axis of the graph represents the power consumption for each predetermined time unit.
  • a case where two of the four hydraulic pumps 10 are set as operating hydraulic pumps will be described as an example. In this case, each combination of selecting two units from the No. 1 to No. 4 hydraulic pumps 10 is set as the hydraulic pump 10 for operation.
  • FIG. 5 is a figure which shows the graph corresponding to the combination of hydraulic pump No1 and No2 for operation.
  • the second integrated power consumption corresponding to No1 is shown in the lower part
  • the second integrated power consumption corresponding to No2 is shown in the upper part.
  • the first integrated power consumption obtained by totaling the second integrated power consumption corresponding to the No. 1 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 2 hydraulic pump 10 is shown in the lower part and the upper part.
  • FIG. 5B shows the graph corresponding to the combination of hydraulic pump No1 and No3 for operation.
  • the second integrated power consumption corresponding to No1 is shown in the lower part
  • the second integrated power consumption corresponding to No3 is shown in the upper part.
  • the first integrated power consumption obtained by summing the second integrated power consumption corresponding to the No. 1 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 3 hydraulic pump 10 is shown in the lower part and the upper part.
  • FIG. 5C shows the graph corresponding to the combination of hydraulic pump No3 for operation, and No4.
  • the second integrated power consumption corresponding to No3 is shown at the bottom, and the second integrated power consumption corresponding to No4 is shown at the top.
  • the first integrated power consumption obtained by summing the second integrated power consumption corresponding to the No. 3 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 4 hydraulic pump 10 is shown in the lower part and the upper part.
  • FIG. 5D shows the graph corresponding to the combination of hydraulic pump No2 and No3 for operation.
  • the second integrated power consumption corresponding to No3 is shown at the bottom, and the second integrated power consumption corresponding to No2 is shown at the top.
  • the first integrated power consumption obtained by summing the second integrated power consumption corresponding to the No. 2 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 3 hydraulic pump 10 is shown in the lower part and the upper part.
  • FIG. 5 (E) of FIG. 5 is a figure which shows the graph corresponding to the combination of hydraulic pump No1 and No4 for operation.
  • the second cumulative power consumption corresponding to No1 is shown in the lower part
  • the second cumulative power consumption corresponding to No4 is shown in the upper part.
  • the first integrated power consumption obtained by summing the second integrated power consumption corresponding to the No. 1 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 4 hydraulic pump 10 is shown in the lower part and the upper part.
  • FIG. 5 (F) of FIG. 5 is a figure which shows the graph corresponding to the combination of hydraulic pump No2 and No4 for operation.
  • the second integrated power consumption corresponding to No2 is shown in the lower part
  • the second integrated power consumption in the measurement period corresponding to No4 is shown in the upper part.
  • the first integrated power consumption obtained by summing the second integrated power consumption corresponding to the No. 2 hydraulic pump 10 and the second integrated power consumption corresponding to the No. 4 hydraulic pump 10 is shown in the lower part and the upper part.
  • the minimum power determination data is generated for the above-described six combinations because two of the four hydraulic pumps 10 are set as operating hydraulic pumps. As shown in FIGS. 5A to 5F, the graph corresponding to the combination of the hydraulic pumps No2 and No3 for operation has a smaller first accumulated power consumption than the other graphs. For this reason, the minimum power determination data corresponding to the No. 2 and No. 3 hydraulic pumps 10 among the minimum power determination data of the six combinations is specified as a combination of equipment that can operate with the minimum power. Therefore, the combination of the hydraulic pumps No2 and No3 for operation is stored in the storage unit 111 as a combination of facilities that can operate with the minimum power.
  • the four hydraulic pumps 10 since the four hydraulic pumps 10 exist, the same number of deterioration determination data is generated. Specifically, the second cumulative power consumption corresponding to the No. 1 hydraulic pump 10 is shown in (a), (b), and (e) of FIG. 5, and of these, shown in (a) of FIG. 5.
  • the degradation determination data including the apparatus identification information “No1” and the minimum second accumulated power consumption calculated for the hydraulic pump 10 of No1 is generated.
  • the second integrated power consumption corresponding to the hydraulic pump 10 of No. 2 is shown in (a), (d), and (f) of FIG. 5, and among these, the second integrated power consumption shown in (d) of FIG.
  • the deterioration determination data including the apparatus identification information “No2” and the minimum second integrated power consumption calculated for the hydraulic pump 10 of No2 is generated.
  • the second integrated power consumption corresponding to the No. 3 hydraulic pump 10 is shown in (b), (c), and (d) of FIG. 5, and among these, the second integrated power consumption shown in (d) of FIG.
  • the deterioration determination data including the apparatus identification information “No3” and the minimum second integrated power consumption calculated for the hydraulic pump 10 of No3 is generated.
  • the second integrated power consumption corresponding to the No. 4 hydraulic pump 10 is shown in (c), (e), and (f) of FIG. 5, and among these, the second integrated power consumption shown in (c) of FIG.
  • the deterioration determination data including the apparatus identification information “No4” and the minimum second integrated power consumption calculated for the hydraulic pump 10 of No4 is generated.
  • the first hydraulic pump 10 has a large second cumulative power consumption in any combination. This is no. This is because one hydraulic pump 10 itself has deteriorated.
  • the second cumulative power consumption of the hydraulic pump 10 of No. 2 is No. 2.
  • the second cumulative power consumption of the second hydraulic pump 10 increases. No. No. 3 hydraulic pump 10 has not deteriorated. No. 3 when combined with No. 3
  • the second hydraulic pump 10 does not need to increase the output, and the second cumulative power consumption is reduced. As described above, the second cumulative power consumption amount of the hydraulic pump 10 that has not deteriorated varies depending on the degree of deterioration of the hydraulic pump 10 that is the other side of the combination.
  • the degradation determination data generated for each of the hydraulic pumps No. 1 to No. 4 is compared with the second cumulative power consumption and the threshold value T1 indicated by the threshold data 143 stored in the storage unit 111, and the second cumulative power consumption.
  • the hydraulic pump 10 specified by the deterioration determination data whose amount is greater than or equal to the threshold T1 is classified as a deteriorated hydraulic pump, and the hydraulic pump 10 specified by the deterioration determination data whose second cumulative power consumption is less than the threshold T1 is It is classified as a hydraulic pump before deterioration.
  • the hydraulic pump 10 classified as a deteriorated hydraulic pump is stored in the storage unit 111 as equipment requiring maintenance.
  • the threshold setting unit 131 generates threshold data in response to a user input, and sets the threshold by storing the threshold data 143 in the storage unit 111. For example, in an initial state in which N new hydraulic pumps are operated, the user increased 1.1 times (10%) the average value (or maximum value) of the accumulated power consumption of each hydraulic pump in a predetermined period. Value) as threshold data. Alternatively, the user may perform a test operation with a combination of a hydraulic pump that has deteriorated due to long-term use and a new hydraulic pump, and set the accumulated power consumption for the predetermined period of the deteriorated hydraulic pump as threshold data. Good.
  • the alarm unit 133 is operated based on a predetermined alarm setting level and a total value of power consumption of the N hydraulic pumps for operation in the latest predetermined period acquired by the measurement data acquisition unit 121. It is determined whether or not a level for alarming the abnormality of the hydraulic pump is reached. If the total power consumption of the N hydraulic pumps for operation is greater than a predetermined alarm setting level, an alarm is given. Otherwise, no alarm is given.
  • the predetermined period is, for example, 10 minutes or 1 hour.
  • a buzzer, an indicator lamp, an e-mail, or the like may be used.
  • FIG. 1 shows that the diagnostic apparatus 100 and the indicator lamp 40 are connected.
  • an e-mail including an alarm message is transmitted to a facility management apparatus that manages pre-registered operating facilities on the condition that the alarming level has been reached.
  • the warning message is, for example, a message indicating that the alarm target operating equipment is abnormal.
  • FIG. 6 is a flowchart illustrating an example of the flow of the minimum power equipment specifying process.
  • the minimum power equipment specifying process is a process executed by the control unit 101 when the control unit 101 executes the minimum power equipment specifying program stored in the storage unit 111.
  • the minimum power determination data generation unit 123 reads the power consumption amount data 141 stored in the storage unit 111 (step S01).
  • the user sequentially sets all combinations for selecting N units from the M hydraulic pumps 10.
  • the diagnostic device 100 collects measurement data from the watt-hour meter 30 corresponding to the set hydraulic pump for operation. Therefore, the power consumption amount data 141 stored in the storage unit 111 includes power consumption records for all combinations of the hydraulic pumps N for operation.
  • a case where two of the four hydraulic pumps 10 are set as operating hydraulic pumps will be described as an example.
  • step S02 the minimum power determination data generation unit 123 selects a power consumption record corresponding to one combination from the power consumption data 141 read in step S01, and the process proceeds to step S03.
  • step S03 the minimum power determination data generation unit 123 sets the device identification information set in the items of the first and second device identification information of the power consumption record selected in step S02, and the first and second consumptions. All the power consumption amounts set for each of the power amount items are extracted, and the process proceeds to step S04.
  • step S04 the minimum power determination data generation unit 123 selects the date / time from the power consumption extracted in step S03 (the power consumption indicated by the items of the first power consumption and the second power consumption). Based on the item, the power consumption measured in the latest predetermined period (for example, 10 minutes or 1 hour) is specified. Then, the first integrated power consumption is calculated by adding the specified power consumption, and the process proceeds to step S05.
  • the latest predetermined period for example, 10 minutes or 1 hour
  • step S05 the minimum power determination data generation unit 123 generates minimum power determination data including the device identification information extracted in step S03 and the first integrated power consumption calculated in step S04, and performs processing. Proceed to step S06.
  • step S06 the minimum power determination data generation unit 123 determines whether there is a power consumption record corresponding to an unselected combination. If there is an unselected power consumption record, the process returns to step S02; otherwise, the process proceeds to step S07.
  • step S07 the minimum power equipment specifying unit 125 specifies data having the minimum first integrated power consumption amount among the minimum power determination data generated in step S05. Then, it is determined that the combination of the two hydraulic pumps indicated by the device identification information included in the specified minimum power determination data is the minimum power combination, and the minimum power facility specifying process is terminated.
  • step S07 the device identification information included in the specified minimum power determination data is included in the minimum power specifying information indicating that it is a combination of equipment capable of operating with the minimum power, and stored in the storage unit 111.
  • FIG. 7 is a flowchart illustrating an example of the flow of the deteriorated facility specifying process in the first embodiment.
  • the deteriorated facility specifying process is a process executed by the control unit 101 when the control unit 101 executes the deteriorated facility specifying program stored in the storage unit 111.
  • the deterioration determination data generation unit 127 reads the power consumption amount data 141 stored in the storage unit 111 (step S11).
  • the user sequentially sets all combinations for selecting N units from the M hydraulic pumps 10.
  • the diagnostic device 100 collects measurement data from the watt-hour meter 30 corresponding to the set hydraulic pump for operation. For this reason, the integrated power consumption data 141 stored in the storage unit 111 includes power consumption records for all combinations of the operating hydraulic pumps N.
  • a case where two of the four hydraulic pumps 10 are set as operating hydraulic pumps will be described as an example.
  • step S12 the degradation determination data generation unit 127 selects a power consumption record corresponding to one combination from the power consumption data 141 read in step S11, and the process proceeds to step S13.
  • the degradation determination data generation unit 127 uses the latest predetermined period (for example, 10 minutes or 1) based on the date / time item among the power consumption amounts set in the first power consumption item.
  • the power consumption measured in (time) is specified.
  • the degradation determination data candidate containing the 2nd integrated power consumption which totaled the specified power consumption and the apparatus identification information set to the item of 1st apparatus identification information is produced
  • the power consumption measured in the latest predetermined period (for example, 10 minutes or 1 hour) is specified based on the date / time item among the power consumption amounts set in the second power consumption item. .
  • the deterioration determination data generation unit 127 generates two deterioration determination records from the power consumption record corresponding to one combination.
  • step S14 it is determined whether there is a power consumption record corresponding to the unselected combination. If there is an unselected power consumption record, the process returns to step 12; otherwise, the process proceeds to step S15.
  • the power consumption data 141 includes power consumption records for all combinations that select two of the four hydraulic pumps 10. For this reason, twelve deterioration determination data candidates are generated.
  • the twelve deterioration determination data candidates include deterioration determination data with overlapping device identification information.
  • the deterioration determination data generation unit 127 indicates, for each hydraulic pump 10, a minimum second integrated power consumption amount from among deterioration determination data candidates including device identification information indicating the hydraulic pump 10. Deterioration determination data candidates are determined as deterioration determination data. As a result, four pieces of deterioration determination data equal to the number of hydraulic pumps 10 are generated.
  • step S16 the deterioration equipment specifying unit 129 sorts the deterioration determination data in ascending order of the second cumulative power consumption. And the threshold value data 143 memorize
  • the deterioration equipment specifying unit 129 selects one deterioration determination data. Then, it is determined whether or not the second accumulated power consumption included in the selected deterioration determination data is equal to or greater than a threshold T1 indicated by the threshold data 143 read in step S21 (step S19). If the second cumulative power consumption is greater than or equal to threshold value T1, the process proceeds to step S20. If not, the process proceeds to step S21.
  • step S20 the deteriorated equipment specifying unit 129 specifies the hydraulic pump 10 specified by the device identification information included in the deterioration determination data selected in step S18 as a deteriorated hydraulic pump, and the process proceeds to step S22. .
  • step S20 the deteriorated equipment specifying unit 129 stores the device identification information of the hydraulic pump 10 specified in step S20 in the storage unit 111, including the maintenance request information for requesting maintenance.
  • step S21 the deterioration equipment specifying unit 129 specifies the hydraulic pump 10 specified by the device identification information included in the deterioration determination data selected in step S18 as the pre-deterioration hydraulic pump, and the process proceeds to step S22. .
  • step S22 the deterioration equipment specifying unit 129 determines whether or not there is next deterioration determination data. If there is next deterioration determination data, the process returns to step S18. If not, the deterioration facility specifying process is terminated.
  • the information obtained by arranging the device identification information in the order sorted in the process of S16 may be stored in the storage unit 111, and the output process of the information may be performed in response to a user request. Thereby, the apparatus identification information sorted in the order according to the degree of deterioration can be confirmed.
  • the second cumulative power consumption is sorted in ascending order, but may be sorted in descending order.
  • the diagnostic device 100 collects measurement data from the watt-hour meter 30 corresponding to the set hydraulic pump for operation for all combinations, and stores the power consumption data 141 in the storage unit 111.
  • the minimum power equipment specifying unit 125 selects the minimum power determination data including the minimum first integrated power consumption among the minimum power determination data generated based on the power consumption data 141 stored in the storage unit 111. . Then, the minimum power equipment specifying unit 125 determines that the combination of the hydraulic pumps 10 indicated by the two device identification information included in the selected minimum power determination data is the minimum power combination. At this time, the minimum power equipment specifying unit 125 stores the minimum power specifying information including the device identification information of the hydraulic pump 10 belonging to the combination of the minimum power in the storage unit 111. Therefore, the user can easily know the combination of the hydraulic pumps 10 that can be operated with the minimum power by looking at the minimum power specifying information stored in the storage unit 111. Thereby, the user can operate the operating equipment with energy saving by setting the combination of the hydraulic pumps 10 specified by the minimum power specifying information as the operating hydraulic pump every time the stop date of the operating equipment comes.
  • the deterioration determination data generation unit 127 performs, based on the power consumption data 141 stored in the storage unit 111, for each hydraulic pump 10, an integrated consumption in a predetermined period in each operation of the combination including the hydraulic pump 10. A deterioration determination data candidate including the electric energy (second integrated electric energy consumption) is generated. Then, the deterioration determination data generation unit 127 generates, as the deterioration determination data, a candidate including the minimum second integrated power consumption amount among the generated deterioration determination data candidates for each hydraulic pump 10.
  • the deterioration equipment specifying unit 129 is a hydraulic pump after the hydraulic pump 10 has deteriorated.
  • the hydraulic pump 10 is specified as the hydraulic pump before deterioration.
  • maintenance request information including device identification information of the hydraulic pump 10 specified as a deteriorated hydraulic pump is stored in the storage unit 111.
  • the user viewing the maintenance request information stored in the storage unit 111 can easily know the deteriorated hydraulic pump 10, that is, the hydraulic pump 10 to be maintained. Accordingly, maintenance can be performed before the deteriorated hydraulic pump 10 breaks down, so that the hydraulic pump 10 can be used to the maximum and the number of maintenance can be reduced as much as possible. Thereby, the cost of maintenance can be reduced.
  • FIG. 8 is a graph showing the effect of energy saving by specifying the deteriorated equipment.
  • the horizontal axis of the graph represents the elapsed time (days) from the initial state (the hydraulic pump 10 is a new state).
  • the vertical axis of the graph indicates power consumption.
  • the power consumption increases as the elapsed time increases. Specifically, the power consumption is A (kW) in the initial state, increases to B (kW) on the Xth day when the hydraulic pump 10 is determined to be deteriorated, and corresponds to Y when the hydraulic pump 10 fails. It shows that it increases to C (kW) on the day.
  • FIG. 9 is a diagram illustrating a part of data indicating the energy saving effect by specifying the facility with the minimum power. As shown in FIG. 9, the hydraulic pressures for operation of the combination of No. 1 and No. 2 hydraulic pumps, the combination of No. 1 and No. 3 hydraulic pumps, the combination of No. 3 and No. 4 hydraulic pumps, and the combination of No. 2 and No. 3 hydraulic pumps. The total power consumption for the pump is shown.
  • FIG. 9 the hydraulic pressures for operation of the combination of No. 1 and No. 2 hydraulic pumps, the combination of No. 1 and No. 3 hydraulic pumps, the combination of No. 3 and No. 4 hydraulic pumps, and the combination of No. 2 and No. 3 hydraulic pumps. The total power consumption for the pump is shown.
  • the operating equipment in the first embodiment includes a hydraulic pump 10 of a type in which the amount of power consumption increases due to deterioration.
  • the operating equipment in the second embodiment includes a hydraulic pump 10A of a type that reduces the amount of power consumption even if it is deteriorated.
  • An example of a hydraulic pump 10A that consumes less power even if it is deteriorated is a gear pump.
  • FIG. 10 is a block diagram illustrating an example of the configuration of the diagnostic apparatus according to the second embodiment.
  • the control unit 101A included in the diagnostic device 100 illustrated in FIG. 10 is different from the control unit 101 included in the diagnostic device 100 illustrated in FIG. 3 in that the deterioration determination data generation unit 127 is changed to a deterioration determination data generation unit 127A.
  • This is the point that the facility specifying unit 129 is changed to the deteriorated facility specifying unit 129A and the threshold setting unit 131 is changed to the threshold setting unit 131A. Since other configurations and functions are the same as those of control unit 101, description thereof will not be repeated here.
  • the deterioration determination data generation unit 127A For each combination of all the hydraulic pumps for operation, the deterioration determination data generation unit 127A, for each of the hydraulic pumps 10A operated in the combination, device identification information of the hydraulic pump 10A and the hydraulic pump for a predetermined period A degradation determination data candidate including the second accumulated power consumption that is the accumulated power consumption of 10A is generated.
  • the deterioration determination data generation unit 127A extracts the first power consumption amount or the second power consumption amount for the latest predetermined period (for example, 3 hours or 1 day) from the power consumption record for each combination of the N hydraulic pumps 10A. Then, the second integrated power consumption can be calculated by summing them.
  • the deterioration determination data generation unit 127A selects deterioration determination data candidates including device identification information indicating the hydraulic pump 10A from among ( M C N ⁇ N) deterioration determination data candidates.
  • the extracted candidate for the second integrated power consumption is identified from the extracted deterioration determination data candidates.
  • the deterioration determination data generation unit 127 employs, as the deterioration determination data, the deterioration determination data candidate that is identified as having the maximum second integrated power consumption for each of the M hydraulic pumps 10A, and the second integrated power consumption.
  • the degradation determination data candidate that is not specified as the maximum is deleted. As a result, the same number of deterioration determination data as the M hydraulic pumps 10A are generated.
  • the deterioration determination data generating unit 127A outputs the M remaining deterioration determination data candidates finally remaining to the deterioration facility specifying unit 129A as deterioration determination data.
  • the deteriorated facility specifying unit 129A specifies the deteriorated facility based on the deterioration determination data input from the deterioration determination data generating unit 127A and the threshold data 143A stored in the storage unit 111. Specifically, the maximum second integrated power consumption amount among the M pieces of deterioration determination data input from the deterioration determination data generation unit 127A is set as a reference value, and a difference from the reference value is stored in the storage unit 111.
  • the hydraulic pump 10A specified by the deterioration determination data that is equal to or higher than the threshold value T2 indicated by the threshold data 143A is specified as the hydraulic pump after deterioration.
  • the deteriorated equipment specifying unit 129 ⁇ / b> A specifies the deteriorated hydraulic pump, the device identifying information of the hydraulic pump 10 included in the deterioration determination data is stored in the storage unit 111.
  • the deteriorated facility specifying unit 129A reads the maintenance request information from the storage unit 111 and performs the output process of the maintenance request information.
  • the output process includes, for example, a process of displaying maintenance request information on a display unit (not shown), a process of notifying a hydraulic pump 10A indicated by the maintenance request information from a speaker (not shown), and an external device. There is a process of transmitting maintenance request information to the user.
  • the deteriorated facility specifying unit 129A stores a graph (see FIG. 5) and threshold data 143A generated based on the power consumption data 141A stored in the storage unit 111 in the storage unit 111 at regular intervals or at arbitrary timing. You may make it memorize
  • FIG. 11 is a graph showing an example of the integrated power consumption data in the second embodiment.
  • the horizontal axis of the graph indicates the measurement period.
  • the vertical axis of the graph represents the power consumption for each predetermined time unit.
  • a case where two of the three hydraulic pumps 10A are set as operating hydraulic pumps will be described as an example.
  • the combination of the No. 5 hydraulic pump 10A and the No. 6 hydraulic pump 10A, the combination of the No. 5 hydraulic pump 10A and the No. 7 hydraulic pump 10A, and the combination of the No. 6 hydraulic pump 10A and the No. 7 hydraulic pump 10A are operated. It shall be set as a hydraulic pump for use.
  • FIG. 11 is a figure which shows the graph corresponding to the combination of hydraulic pump No5 and No6 for operation.
  • the line graph 301 corresponds to the No. 5 hydraulic pump 10A
  • the line graph 303 corresponds to the No. 6 hydraulic pump 10A.
  • the No. 5 to No. 7 hydraulic pumps 10A have the same configuration and function, but the figure shows that the No. 5 hydraulic pump 10A consumes more power than the No. 6 hydraulic pump 10A. This is because a constant output value cannot be obtained due to deterioration of the No. 6 hydraulic pump 10 ⁇ / b> A, and the No. 5 hydraulic pump 10 ⁇ / b> A that has not yet deteriorated compensates for the inability to output the No.
  • the power consumption data 141A obtained from the operating hydraulic pump including the degraded hydraulic pump 10A such as the No. 6 hydraulic pump 10A is the hydraulic pump 10A before degradation as shown in FIG. There is a tendency that the amount of power consumption increases.
  • the line graph 301 and the line graph 303 are compared, there is a difference of about 15% as a result.
  • FIG. 11 is a figure which shows the graph corresponding to the combination of hydraulic pump No5 and No7 for operation.
  • the line graph 305 corresponds to the No. 5 hydraulic pump 10A
  • the line graph 307 corresponds to the No. 7 hydraulic pump 10A.
  • the figure shows that the power consumption of the No. 5 and No. 7 hydraulic pumps 10A is almost the same. This is no. This is because there is no deterioration in the hydraulic pump 10A of No. 5 and the hydraulic pump 10A of No7. Therefore, the power consumption data 141A obtained from the hydraulic pump for operation including only the hydraulic pump before deterioration such as the hydraulic pump 10A of No5 and No7 is converted into the power consumption amount as shown in FIG. There is a tendency that there is almost no difference.
  • the line graph 305 and the line graph 7 are compared, there is a difference of about 3% as a result.
  • FIG. 6A and FIG. 12B show the integrated power consumption of each combination before and after the deterioration of the hydraulic pump 10A of FIG. 6, in which FIG. 12A shows before deterioration and FIG. 12B shows after deterioration.
  • the same number of deterioration determination data is generated. Specifically, three pieces of deterioration determination data including the device identification information and the second integrated power consumption corresponding to the device identification information are generated.
  • the second cumulative power consumption included in each of the three deterioration determination data is the maximum value among the second cumulative power consumptions calculated for each of the hydraulic pumps 10A specified by the same device identification information. is there.
  • the deteriorated facility specifying unit 129A obtains a difference between the reference value and the second integrated power consumption of each deterioration determination data, using the maximum second integrated power consumption of the three deterioration determination data as a reference value. .
  • the reference value is No. 5 or No.
  • the second integrated power consumption of the deterioration determination data corresponding to 7 is set. Therefore, no.
  • the difference between the second integrated power consumption of the corresponding deterioration determination data and the reference value is a relatively large value.
  • the difference between the second accumulated power consumption of the corresponding deterioration determination data and the reference value is a relatively small value.
  • the difference between the second accumulated power consumption of the deterioration determination data and the reference value increases as the deterioration deteriorates. Therefore, this difference is compared with the threshold value T2 indicated by the threshold value data 143A, and the hydraulic pump 10A specified by the deterioration determination data whose difference is equal to or greater than the threshold value T2 is classified as a deteriorated hydraulic pump.
  • the hydraulic pump 10A specified by the deterioration determination data that is less than T2 can be classified as a hydraulic pump before deterioration.
  • the hydraulic pump 10A classified as a deteriorated hydraulic pump is stored in the storage unit 111 as equipment requiring maintenance.
  • FIG. 13 is a diagram illustrating an example of the flow of the deteriorated facility specifying process in the second embodiment.
  • the difference between the deteriorated equipment specifying process in the second embodiment and the deteriorated equipment specifying process in the first embodiment shown in FIG. 7 is that steps S15, S16, and S19 are changed to steps S15A, 16A, and 19A.
  • step S15B is added. Since the other processes are the same as the deteriorated facility specifying process in the first embodiment shown in FIG. 7, the description will not be repeated here.
  • the deterioration determination data generation unit 127A includes a deterioration determination indicating the maximum second accumulated power consumption from among deterioration determination data candidates including device identification information indicating the hydraulic pump 10A. Data candidates are determined as deterioration determination data. As a result, the same number (M) of deterioration determination data as the number of hydraulic pumps 10A is generated.
  • the deterioration equipment specifying unit 129A sets the maximum second integrated power consumption amount among the M pieces of deterioration determination data generated in S15A as a reference value. Then, for each deterioration determination data, the difference between the set reference value and the second integrated power consumption of the deterioration determination data is calculated.
  • step S16A the deterioration equipment specifying unit 129A sorts the deterioration determination data in ascending order of difference between the reference value and the second integrated power consumption.
  • step S19A the deterioration facility specifying unit 129A indicates the difference between the second integrated power consumption and the reference value included in the deterioration determination data selected in step S18 by the threshold data 143A read in step S17. It is determined whether or not the threshold value T2 is exceeded. If the difference between the second cumulative power consumption and the reference value is greater than or equal to threshold value T2, the process proceeds to step S20; otherwise, the process proceeds to step S21.
  • N an integer satisfying 2 ⁇ N ⁇ M ⁇ 1
  • M an integer satisfying M ⁇ 3
  • the diagnostic apparatus 100 includes a data communication control unit 113 that communicates with the watt-hour meter 30 that measures the amount of power consumed by the cooperation of the N hydraulic pumps 10 for each of the N hydraulic pumps 10 and a serial communication.
  • An interface terminal 117 is provided. Furthermore, the diagnostic apparatus 100 acquires measurement data indicating the power consumption for each hydraulic pump 10 measured by the watt-hour meter 30 for each of all combinations of N of the M hydraulic pumps 10 that cooperate.
  • a measurement data acquisition unit 121 that performs deterioration, a deterioration determination data generation unit 127 that specifies a deteriorated hydraulic pump, and a deteriorated facility specification unit 129.
  • the degradation determination data generation unit 127 includes, for each of the M hydraulic pumps 10, (a) a second cumulative power consumption that is a power consumption of the hydraulic pump 10 in each of the combinations including the hydraulic pump 10. A deterioration determination data candidate is obtained, and (b) a candidate indicating the minimum second integrated power consumption among the plurality of deterioration determination data candidates is specified as deterioration determination data for the hydraulic pump 10. The second integrated power consumption indicated by the deterioration determination data is a deterioration determination value. Thereafter, the deteriorated facility specifying unit 129 determines that the hydraulic pump 10 has deteriorated when the second integrated power consumption indicated by the deterioration determination data is equal to or greater than the threshold T1.
  • the hydraulic pump 10 is a swash plate type axial piston pump whose power consumption increases due to deterioration.
  • the undegraded hydraulic pump paired with the degraded hydraulic pump consumes more power than necessary to compensate for the decrease in the output of the degraded hydraulic pump. For this reason, both the power consumption of the hydraulic pump after degradation and the hydraulic pump before degradation increase.
  • the deterioration determination data candidate including the minimum second integrated power consumption calculated for each of the M hydraulic pumps 10 is determined as the deterioration determination data.
  • the second cumulative power consumption indicated by the deterioration determination data is a value that is not affected as much as possible by the deterioration of the hydraulic pump of the combination. Therefore, by comparing the deterioration determination data with the threshold value T1, the M hydraulic pumps 10 can be accurately classified into a deteriorated hydraulic pump and a deteriorated hydraulic pump. Therefore, when each of the plurality of hydraulic pumps 10 that cooperate to provide a certain output to the rolling roll 220 is driven by the electric motor 30, it is possible to determine the deterioration of the hydraulic pump 10.
  • the diagnostic device 100 includes a deterioration determination data generation unit 127A and a deterioration equipment specification unit 129A that specify the hydraulic pump after deterioration.
  • the degradation determination data generation unit 127A includes, for each of the M hydraulic pumps 10, (a) a second integrated power consumption that is a power consumption of the hydraulic pump 10 in each of the combinations including the hydraulic pump 10. A deterioration determination data candidate is obtained, and (b) a candidate indicating the maximum second integrated power consumption among the plurality of deterioration determination data candidates is specified as deterioration determination data for the hydraulic pump 10. The second integrated power consumption indicated by the deterioration determination data is a deterioration determination value. Thereafter, the deterioration facility specifying unit 129A sets, as a reference value, the maximum value among the second integrated power consumptions indicated by the deterioration determination data specified for each of the M hydraulic pumps. The deteriorated facility specifying unit 129A determines that the hydraulic pump 10A corresponding to the deterioration determination data indicating the second integrated power consumption whose difference from the set reference value is equal to or greater than the threshold T2 is deteriorated.
  • the hydraulic pump 10A is a gear pump in which power consumption does not increase due to deterioration.
  • the undegraded hydraulic pump paired with the degraded hydraulic pump consumes more power than necessary to compensate for the decreased output of the degraded hydraulic pump. Will increase.
  • the deterioration determination data candidate including the maximum second integrated power consumption calculated for each of the M hydraulic pumps 10A is determined as the deterioration determination data. Then, the maximum second integrated power consumption amount is set as the reference value among the deterioration determination data determined for all the hydraulic pumps 10A, and the second integrated power consumption amount and the reference value of each deterioration determination data are set. The difference is calculated. As shown in FIG. 12, the difference increases as the deterioration increases. Therefore, by comparing this difference with the threshold value T2, the M hydraulic pumps 10A can be accurately classified into degraded hydraulic pumps and degraded hydraulic pumps. Therefore, when each of the plurality of hydraulic pumps 10A that cooperate to provide a constant output to the external device 200 is driven by the electric motor 30, the life of the hydraulic pump 10A can be determined.
  • the diagnostic apparatus 100 includes the control unit 101 and the storage unit 111.
  • the control units 101 and 101A and the storage unit 111 may be separated from each other.
  • the control unit 101 is included in the diagnostic device 100
  • the storage unit 111 is included in the information processing device
  • the power consumption data 141 and the threshold data 143 collected in the information processing device.
  • the diagnosis unit 100 includes the control unit 101A and the storage unit 111 includes the information processing device. Based on the power consumption data 141A and the threshold data 143A collected by the information processing device.
  • the diagnostic device 100 may specify the combination of the deteriorated hydraulic pump and the minimum power hydraulic pump.
  • control unit 101 stores the threshold data 143 in the first embodiment, and the control unit 101A in the second embodiment
  • the threshold value data 143A may be stored.
  • the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims, and technical means disclosed in different embodiments can be described. Embodiments obtained by appropriate combinations are also included in the technical scope of the present invention.
  • the diagnostic device is a system in which N (an integer satisfying 2 ⁇ N ⁇ M ⁇ 1) of M (an integer satisfying M ⁇ 3) devices operate in cooperation.
  • a diagnostic apparatus for diagnosing device deterioration wherein the M units communicate with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices.
  • the measurement data acquisition means for acquiring the measurement data indicating the power consumption for each device measured by the watt-hour meter and the deteriorated device are identified for each of all combinations of N devices that cooperate with each other.
  • Deterioration equipment specifying means and when the equipment is deteriorated, the power consumption increases and the processing capacity decreases, and the deterioration equipment specifying means for each of the M equipment ( a) concerned The power consumption of the device in each of all combinations including a device is extracted from the measurement data acquired by the measurement data acquisition means, and (b) the minimum power consumption among the plurality of extracted power consumptions Is determined as a deterioration evaluation value for the device, and (c) it is determined that the device is deteriorated when the deterioration evaluation value is equal to or greater than a predetermined threshold value.
  • the diagnosis method of the present invention reduces the deterioration of devices in a system in which N (integer satisfying 2 ⁇ N ⁇ M ⁇ 1) units out of M (integer satisfying M ⁇ 3) units operate in cooperation.
  • a diagnostic method for diagnosing wherein a communication step of communicating with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices, and among the M devices.
  • a measurement data acquisition step for acquiring measurement data indicating the power consumption for each device measured by the watt hour meter, and a deteriorated facility specifying step for specifying a deteriorated device for each of all combinations in which N units cooperate
  • the device is a device whose power consumption increases and processing capacity decreases.
  • the power consumption of the device in each combination including the devices is extracted from the measurement data acquired in the measurement data acquisition step, and (b) the minimum power consumption among the extracted plurality of power consumptions Is determined as a deterioration evaluation value for the device, and (c) it is determined that the device is deteriorated when the deterioration evaluation value is equal to or greater than a predetermined threshold.
  • the measurement data which show the electric energy consumption for every apparatus measured with the watt-hour meter are acquired about each of all the combinations which N units
  • the power consumption of the device in each of the combinations including the device is extracted from the measurement data, and
  • the minimum power consumption is among the plurality of extracted power consumptions. It is specified as a deterioration evaluation value for the device, and (c) it is determined that the device is deteriorated when the deterioration evaluation value is equal to or greater than a predetermined threshold.
  • the equipment is a swash plate type axial piston pump whose power consumption increases due to deterioration.
  • the undegraded device paired with the degraded device consumes more power than necessary to compensate for the decrease in the output of the degraded device. For this reason, both the power consumption of the device after deterioration and the device before deterioration increase.
  • the deterioration evaluation value is the minimum power consumption calculated for each of the M devices.
  • the deterioration evaluation value is a value that is not affected as much as possible by the deterioration of the paired device. Therefore, by comparing the degradation evaluation value with the predetermined threshold, the M devices can be accurately classified into the degraded device and the degraded device. Therefore, in a system in which a plurality of devices cooperate to provide a constant output, it is possible to provide a diagnostic device and a diagnostic method that can determine the degree of deterioration of each device.
  • the diagnostic apparatus of the present invention can reduce the deterioration of a device in a system in which N (integer satisfying 2 ⁇ N ⁇ M ⁇ 1) units out of M (integer satisfying M ⁇ 3) units operate in cooperation.
  • a diagnostic device for diagnosing wherein communication means for communicating with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices, and among the M devices Measurement data acquisition means for acquiring measurement data indicating the power consumption for each device measured by the watt hour meter, and deteriorated equipment specification means for specifying a deteriorated device for each of all combinations in which N units cooperate And when the equipment deteriorates, the power consumption does not increase and the processing capacity decreases, and the deterioration equipment specifying means (a) for each of the M devices ( i) The device is included The power consumption amount of the device in each combination is extracted from the measurement data acquired by the measurement data acquisition means, and (ii) the maximum power consumption amount among the extracted plurality of power consumption amounts for the device
  • the diagnosis method of the present invention reduces the deterioration of devices in a system in which N (integer satisfying 2 ⁇ N ⁇ M ⁇ 1) units out of M (integer satisfying M ⁇ 3) units operate in cooperation.
  • a diagnostic method for diagnosing wherein a communication step of communicating with a watt hour meter that measures the amount of power consumed by cooperation of N devices for each of the N devices, and among the M devices
  • a measurement data acquisition step for acquiring measurement data indicating the power consumption for each device measured by the watt hour meter, and a deteriorated facility specifying step for specifying a deteriorated device for each of all combinations in which N units cooperate
  • the equipment deteriorates the power consumption does not increase and the processing capacity decreases.
  • the deterioration equipment specifying step (a) for each of the M devices ( i) The power consumption of the device in each combination including the device is extracted from the measurement data acquired in the measurement data acquisition step, and (ii) the maximum power consumption from the extracted plurality of power consumptions The amount is specified as a deterioration evaluation value for the device, and (b) a maximum value among the deterioration evaluation values specified for each of the M devices is used as a reference value, and a difference from the reference value is equal to or greater than a predetermined threshold value. It is determined that the device corresponding to the deterioration evaluation value is deteriorated.
  • the measurement data which show the power consumption for every apparatus measured with the watt-hour meter are acquired about each of all the combinations which N units
  • the equipment is a gear pump that does not increase power consumption due to deterioration.
  • the undegraded device paired with the degraded device consumes more power than necessary to compensate for the decrease in the output of the degraded device, so the power consumption of the undegraded device increases.
  • the deterioration evaluation value is the maximum integrated power consumption calculated for each of the M devices, and the difference between the power consumption of each of the M devices and the deterioration evaluation value is calculated.
  • the deterioration evaluation value is a value that increases as the deterioration increases. Therefore, by comparing the degradation evaluation value and the predetermined threshold value, the M devices can be accurately classified into the degraded device and the degraded device. Therefore, in a system in which a plurality of devices cooperate to provide a constant output, it is possible to provide a diagnostic device and a diagnostic method that can determine the degree of deterioration of each device.
  • each block of the diagnostic apparatus 100 in particular, the control units 101 and 101A may be configured by hardware logic, or may be realized by software using a CPU as follows.
  • the diagnostic device 100 includes a CPU (central processing unit) that executes instructions of a control program that realizes each function, a ROM (read memory only) that stores the program, a RAM (random access memory) that develops the program, A recording medium such as a memory for storing the program and various data is provided.
  • An object of the present invention is to provide a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program of the diagnostic apparatus 100, which is software that realizes the above-described functions, is recorded so as to be readable by a computer. This can also be achieved by supplying the diagnostic apparatus 100 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).
  • Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R.
  • Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM.
  • the diagnostic apparatus 100 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network.
  • the communication network is not particularly limited.
  • the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available.
  • the transmission medium constituting the communication network is not particularly limited.
  • wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc.
  • infrared rays such as IrDA and remote control, Bluetooth (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used.
  • the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

La présente invention concerne un appareil de diagnostic permettant d'obtenir, pour chaque dispositif parmi M dispositifs, des données candidates de détermination de détérioration qui comprennent des seconds niveaux cumulés de consommation d'énergie pour un dispositif spécifique dans toutes les combinaisons dans lesquelles ce dispositif spécifique est inclus (S13) ; d'identifier, en tant que données de détermination de détérioration pour ce dispositif spécifique, le candidat présentant le second niveau cumulé de consommation d'énergie le plus bas parmi les multiples données candidates de détermination de détérioration (S15) ; et de déterminer la détérioration du dispositif spécifique si les données de détermination de détérioration sont égales ou supérieures à une valeur seuil (T1) (S20).
PCT/JP2012/077379 2011-12-13 2012-10-23 Appareil et procédé de diagnostic WO2013088841A1 (fr)

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JP2011272672A JP2013124565A (ja) 2011-12-13 2011-12-13 診断装置および診断方法

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JP5831197B2 (ja) * 2011-12-14 2015-12-09 オムロン株式会社 評価装置、評価方法および評価プログラム
JP6006706B2 (ja) * 2013-10-07 2016-10-12 エコ・パワー株式会社 風力発電用風車の監視システム、風力発電システム、風力発電用風車の監視方法及び風力発電用風車の監視プログラム
JP6177192B2 (ja) * 2014-06-03 2017-08-09 三菱重工業株式会社 累積損傷度評価システム、再生エネルギー型発電装置、累積損傷度評価方法及び油圧機械の制御方法
JPWO2020136897A1 (ja) * 2018-12-28 2021-11-25 株式会社安川電機 流体圧送システム、電力変換システム、電力変換装置及び流体圧送方法
JP7466332B2 (ja) 2020-02-27 2024-04-12 三菱重工機械システム株式会社 デッキクレーンの状態判断装置、デッキクレーンシステム及びデッキクレーンの状態判断方法

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JP2007079754A (ja) * 2005-09-13 2007-03-29 Hitachi Ltd 管理装置及び管理方法並びにストレージシステム
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JPH06320396A (ja) * 1993-03-18 1994-11-22 Topy Ind Ltd 刃工具の寿命判定方法および自動交換方法
JPH09198123A (ja) * 1996-01-18 1997-07-31 Nissan Motor Co Ltd モータを動力源とする機械の動作状態モニタ装置およびモータを動力源とする機械の異常診断方法
JPH11311591A (ja) * 1998-04-28 1999-11-09 Nissan Motor Co Ltd モータを駆動源とした機械の診断装置
JP2003245846A (ja) * 2002-02-25 2003-09-02 Denso Corp 刃具寿命診断装置
JP2003251545A (ja) * 2002-02-28 2003-09-09 Denso Corp 刃具寿命診断システム
JP2007079754A (ja) * 2005-09-13 2007-03-29 Hitachi Ltd 管理装置及び管理方法並びにストレージシステム
JP2009157624A (ja) * 2007-12-26 2009-07-16 Mitsubishi Electric Corp 統合維持管理システム

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