WO2018135129A1 - Système de gestion, dispositif de gestion, procédé d'installation de capteur, procédé de gestion et programme de gestion - Google Patents

Système de gestion, dispositif de gestion, procédé d'installation de capteur, procédé de gestion et programme de gestion Download PDF

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Publication number
WO2018135129A1
WO2018135129A1 PCT/JP2017/042030 JP2017042030W WO2018135129A1 WO 2018135129 A1 WO2018135129 A1 WO 2018135129A1 JP 2017042030 W JP2017042030 W JP 2017042030W WO 2018135129 A1 WO2018135129 A1 WO 2018135129A1
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WIPO (PCT)
Prior art keywords
welding
management
magnetic sensor
current value
cable
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PCT/JP2017/042030
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English (en)
Japanese (ja)
Inventor
山本剛史
秋元英男
千賀誠
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住友電気工業株式会社
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Publication of WO2018135129A1 publication Critical patent/WO2018135129A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/15—Indicating the presence of current
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the present invention relates to a management system, a management device, a sensor installation method, a management method, and a management program.
  • Patent Document 1 Japanese Patent Laid-Open No. 2016-038709 describes the following technology.
  • a welding system includes a welding device that performs welding by supplying a welding wire to a welding torch, a welding data recording device that is built in the welding device and records welding data relating to a welding operation of the welding device, and the welding
  • a welding data management device for collecting and processing the welding data recorded by the welding data recording device of the apparatus, wherein the welding data recording device detects the amount of the welding wire supplied to the welding torch.
  • An apparatus includes a data collection unit that collects the welding data related to the welding apparatus transmitted from the wireless transmitter, and the collected welding data. And a data processing unit for processing.
  • a management system includes a magnetic sensor provided corresponding to a welding apparatus, and a management apparatus that performs processing related to a welding operation, and the magnetic sensor flows in a cable connected to the welding apparatus.
  • a magnetic field generated by an electric current is measured, measurement information indicating a measurement result is transmitted to the management device, the management device receives the measurement information transmitted from the magnetic sensor, and based on the received measurement information
  • the magnetic sensor can be locally installed in the circumferential direction of the cable.
  • the management device of the present disclosure is based on the acquisition unit that acquires measurement information indicating the measurement result of the magnetic field generated by the current flowing in the cable connected to the welding device, and the measurement information acquired by the acquisition unit. And a processing unit that calculates a current value of the current and calculates a welding amount of the welding material based on the calculated current value.
  • a sensor installation method is a management method in a management system including a magnetic sensor provided corresponding to a welding device and a management device that performs processing related to a welding operation based on a measurement result of the magnetic sensor.
  • the method includes preparing the magnetic sensor and the management device, and installing the magnetic sensor in a cable connecting the power supply device and the welding device.
  • the management method according to the present disclosure is a management method in a management device that performs processing related to a welding operation, and obtains measurement information indicating a measurement result of a magnetic field generated by a current flowing in a cable connected to the welding device. And calculating a current value of the acquired current and calculating a welding amount of the welding material based on the calculated current value.
  • the management program of the present disclosure is a management program used in the management apparatus, and acquires an acquisition unit that acquires measurement information indicating a measurement result of a magnetic field generated by a computer and a current flowing in a cable connected to the welding apparatus. And calculating the current value of the current based on the measurement information acquired by the acquisition unit, and functioning as a processing unit that calculates the welding amount of the welding material based on the calculated current value. It is a program.
  • One aspect of the present disclosure can be realized not only as a management apparatus including such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes part or all of the management apparatus.
  • FIG. 1 is a diagram showing a configuration of a management system according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an example (part 1) of the installation position of the magnetic sensor according to the embodiment of the present invention.
  • FIG. 3 is a diagram showing an example (part 2) of the installation position of the magnetic sensor according to the embodiment of the present invention.
  • FIG. 4 is a diagram showing the configuration of the management apparatus according to the embodiment of the present invention.
  • FIG. 5 is a diagram showing a correspondence relationship between the current value of the direct current flowing through the power cable and the strength of the magnetic field generated in the power cable in the management system according to the embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a graph indicating speed information stored in the storage unit in the management device according to the embodiment of the present invention.
  • FIG. 7 is a diagram showing a correspondence table stored in the storage unit in the management apparatus according to the embodiment of the present invention.
  • FIG. 8 is a diagram showing an example of a flowchart defining an operation procedure at the time of initial setting of the management system according to the embodiment of the present invention.
  • FIG. 9 is a diagram showing an example of a flowchart defining an operation procedure during operation of the management system according to the embodiment of the present invention.
  • FIG. 10 is a diagram showing a configuration of a management system according to a modification of the embodiment of the present invention.
  • the format of the welding data transmitted from the recording device built in the welding apparatus may differ depending on the type of welding apparatus, that is, the manufacturer or model of the welding apparatus.
  • a welding apparatus that does not include a recording device, such as an old welding apparatus may be provided. In such a case, it is difficult to manage the welding work, and it is even more difficult to manage the entire factory including a plurality of welding apparatuses in one system.
  • the present disclosure has been made in order to solve the above-described problems.
  • the purpose of the present disclosure is to provide a management system, a management device, and a sensor capable of performing management related to welding work regardless of the type and number of welding devices installed. It is to provide an installation method, a management method and a management program.
  • the management system which concerns on embodiment of this invention is provided with the magnetic sensor provided corresponding to the welding apparatus, and the management apparatus which performs the process regarding welding operation,
  • the said magnetic sensor is connected to the said welding apparatus.
  • the magnetic field generated by the current flowing through the cable to be measured is measured, the measurement information indicating the measurement result is transmitted to the management device, the management device receives the measurement information transmitted from the magnetic sensor, the received
  • the said process is performed based on measurement information
  • the said magnetic sensor can be installed locally in the circumferential direction of the said cable.
  • the configuration in which the magnetic sensor can be locally installed in the circumferential direction of the cable enables the magnetic sensor to be installed later on the cable regardless of the size and type of the cable diameter. That is, regardless of the type and number of welding apparatuses to which the cable is connected, the magnetic sensor can be installed in association with the welding apparatus. Therefore, it is possible to manage the welding work regardless of the type and number of welding apparatuses installed.
  • management related to the welding work for each welding apparatus can be performed based on measurement information transmitted from each of the plurality of magnetic sensors.
  • the magnetic sensor is installed on the cable connecting the power supply device and the welding device.
  • the configuration in which the magnetic sensor is installed in the power cable for supplying electric power to the welding apparatus accurately measures the magnetic field generated by the current supplied to the welding apparatus, and performs management related to the welding operation more accurately. be able to.
  • the management device determines whether or not a current is flowing through the cable as the processing based on the measurement information.
  • the management device calculates an operation time of the welding operation as the processing based on the measurement information.
  • the management device calculates a current value of the current as the processing based on the measurement information.
  • the management device further calculates a welding amount of the welding material as the processing based on the current value.
  • the production cost of the product can be calculated and the quality of the product can be evaluated based on the welding amount of the welding material.
  • the management device calculates the welding amount based on the type of the linear welding material, the diameter of the welding material, and the current value.
  • the amount of welding can be calculated more accurately in consideration of the type of welding material and the size of the diameter.
  • the management device specifies a welding speed of the welding material based on the type, the size of the diameter, and the current value, and the welding amount based on the specified welding speed. Is calculated.
  • the welding amount of the welding material can be calculated more accurately by an appropriate method.
  • the management device specifies the welding posture of the worker as the processing based on the current value.
  • the difficulty level of the welding operation can be grasped based on the welding posture, and the production cost of the product and the evaluation of the quality of the product can be performed according to the difficulty level of the welding operation.
  • the management device is acquired by an acquisition unit that acquires measurement information indicating a measurement result of a magnetic field generated by a current flowing in a cable connected to a welding device, and the acquisition unit.
  • a processing unit that calculates a current value of the current based on the measurement information and calculates a welding amount of the welding material based on the calculated current value.
  • management related to the welding work for each welding apparatus can be performed based on measurement information transmitted from each of the plurality of magnetic sensors.
  • the configuration for calculating the welding amount of the welding material for example, the production cost of the product and the evaluation of the quality of the product can be performed based on the welding amount of the welding material.
  • the acquisition unit acquires the measurement information indicating the measurement result by the magnetic sensor installed in the cable connecting the power supply device and the welding device.
  • the configuration in which the magnetic sensor is installed in the power cable for supplying electric power to the welding apparatus accurately measures the magnetic field generated by the current supplied to the welding apparatus, and performs management related to the welding operation more accurately. be able to.
  • a sensor installation method includes a magnetic sensor provided corresponding to a welding device, and a management device that performs processing related to a welding operation based on a measurement result of the magnetic sensor.
  • a sensor installation method in a management system comprising: preparing the magnetic sensor and the management device; and installing the magnetic sensor on a cable connecting a power supply device and the welding device.
  • This method allows the magnetic sensor to be installed later on the cable regardless of the size and type of cable diameter. That is, regardless of the type and number of welding apparatuses to which the cable is connected, the magnetic sensor can be installed in association with the welding apparatus. Therefore, it is possible to manage the welding work regardless of the type and number of welding apparatuses installed.
  • management related to the welding work for each welding apparatus can be performed based on measurement information transmitted from each of the plurality of magnetic sensors.
  • the configuration in which the magnetic sensor is installed in the power cable for supplying power to the welding apparatus makes it possible to accurately measure the magnetic field generated by the current supplied to the welding apparatus and more accurately manage the welding operation. it can.
  • a management method is a management method in a management apparatus that performs processing related to a welding operation, and shows a measurement result of a magnetic field generated by a current flowing in a cable connected to the welding apparatus.
  • the method includes a step of acquiring information, a step of calculating a current value of the acquired current, and a step of calculating a welding amount of the welding material based on the calculated current value.
  • management related to the welding work for each welding apparatus can be performed based on measurement information transmitted from each of the plurality of magnetic sensors.
  • the configuration for calculating the welding amount of the welding material for example, the production cost of the product and the evaluation of the quality of the product can be performed based on the welding amount of the welding material.
  • a management program is a management program used in a management apparatus, and measurement information indicating a measurement result of a magnetic field generated by a current flowing through a cable connected to a welding apparatus. And a processing unit that calculates a current value of the current based on the measurement information acquired by the acquiring unit, and calculates a welding amount of the welding material based on the calculated current value, It is a program to make it function as.
  • management related to the welding work for each welding apparatus can be performed based on measurement information transmitted from each of the plurality of magnetic sensors.
  • the configuration for calculating the welding amount of the welding material for example, the production cost of the product based on the welding amount and the quality evaluation can be performed.
  • FIG. 1 is a diagram showing a configuration of a management system according to an embodiment of the present invention.
  • the management system 301 includes one or more welding apparatuses 101, one or more magnetic sensors 111, one or more welding torches 121, one or more gas cylinders 122, and a power supply apparatus 131.
  • the magnetic sensor 111 is provided corresponding to the welding apparatus 101. Further, the welding torch 121 is provided corresponding to the welding apparatus 101. Further, the gas cylinder 122 is provided corresponding to the welding apparatus 101. Note that the gas cylinders 122 may be provided corresponding to the plurality of welding apparatuses 101.
  • the welding apparatus 101 is a semi-automatic welding machine, for example, and is assigned for each worker.
  • the worker installs the welding apparatus 101 in the vicinity of the work place before the start of the welding operation, and connects one end of the power cable 51, one end of the control cable 52, and one end of the gas cable 53 to a plurality of unillustrated welding apparatuses 101. Connect to each terminal. Further, the operator connects the welding cable 54 extending from the welding torch 121 to a corresponding portion of the welding apparatus 101.
  • the operator connects the other end of the power cable 51 and the other end of the control cable 52 to a plurality of terminals (not shown) of the power supply device 131, and connects the other end of the gas cable 53 to the gas cylinder 122. Further, the operator connects one end of the grounding cable 55 to the base material A that is an object to be welded, and connects the other end of the grounding cable 55 to a terminal (not shown) of the power supply device 131.
  • the power supply device 131 detects the operation via the welding device 101 and the control cable 52. And if the power supply device 131 detects the said operation, for example, the alternating current received from the electric power system side will be converted into a direct current, and a direct current will be supplied to the welding apparatus 101 via the power cable 51.
  • the welding apparatus 101 operates by receiving a direct current supplied from the power supply device 131 via the power cable 51, and supplies the linear welding material M to the welding torch 121 via the welding cable 54.
  • the welding material M is, for example, a welding wire, and is provided in the welding apparatus 101 by being wound in a coil shape.
  • the welding material M supplied to the welding torch 121 is supplied with a direct current through the power supply device 131, the power supply cable 51, the welding device 101, the welding cable 54, and the welding torch 121 to become an electrode.
  • the welding material M and the base material A are melted and integrated by the heat generated by the arc generated between the welding material M and the base material A, which are electrodes.
  • the welding apparatus 101 further releases the shield gas supplied from the gas cylinder 122 via the gas cable 53 from the welding torch 121 via the welding cable 54.
  • the shield gas is, for example, carbon dioxide.
  • the magnetic sensor 111 is, for example, a battery-driven sensor, and measures a magnetic field generated by a direct current flowing through the power cable 51 regularly or irregularly. Then, the magnetic sensor 111 transmits magnetic field information (measurement information) indicating the measurement result to the access point 151.
  • the magnetic field information transmitted from the magnetic sensor 111 includes at least a magnetic field strength generated in the power cable 51, a voltage calculated based on the magnetic field strength, and a current value calculated based on the magnetic field strength. Either one is shown.
  • the magnetic field information indicates the strength of the magnetic field.
  • the access point 151 receives the magnetic field information from the magnetic sensor 111 and transmits the received magnetic field information to the management apparatus 201 via the internal network 401.
  • the management apparatus 201 receives the magnetic field information transmitted from the access point 151 via the internal network 401, and performs processing related to the welding work based on the received magnetic field information.
  • the management device 201 calculates the working time, calculates the welding amount of the welding material M, calculates the amount of shield gas used, and specifies the welding posture of the worker during the welding operation as processing related to the welding operation. Do at least one of the following:
  • the management device 201 outputs, for example, at least one of a processing result, that is, a calculated work time, a welding amount, a usage amount of a shield gas, and a specified welding posture. Specifically, the management apparatus 201 displays characters indicating the processing result on the monitor of the terminal apparatus 202.
  • the management apparatus 201 When the management system 301 includes a plurality of welding apparatuses 101, a plurality of magnetic sensors 111, a plurality of welding torches 121, and a plurality of gas cylinders 122, the management apparatus 201 has a plurality of transmissions transmitted from the plurality of magnetic sensors 111, respectively. Based on the magnetic field information, for example, processing related to the welding operation for each welding apparatus 101 is performed. Then, the administrator or the like can manage the welding operation in the entire factory where the plurality of welding apparatuses 101 are provided by confirming the processing result displayed on the monitor of the terminal device 202, for example.
  • the current supplied from the power supply device 131 to the welding device 101 via the power cable 51 may be an alternating current.
  • the magnetic sensor 111 measures the magnetic field generated by the alternating current flowing through the power cable 51.
  • FIG. 2 is a diagram showing an example (part 1) of the installation position of the magnetic sensor according to the embodiment of the present invention. In FIG. 2, the cross section of the power cable 51 and the magnetic sensor 111 are shown.
  • a plurality of conductive wires 61 are accommodated inside power supply cable 51 in a twisted state.
  • a direct current flows in the power cable 51, a magnetic field is generated in the circumferential direction of each conductive wire 61.
  • a clamp meter may be used as a sensor for measuring the magnetic field generated in the power cable 51.
  • the power cable 51 is sandwiched between iron cores in the clamp meter.
  • a magnetic field is generated in the circumferential direction of the iron core due to the direct current flowing through the power cable 51, for example, a voltage is output by the magnetic flux passing through the hall element provided in the iron core.
  • the magnetic field generated in the cable 51 can be measured.
  • the magnetic sensor 111 that is locally installed in the circumferential direction of the power cable 51 is used instead of using the clamp meter.
  • the magnetic sensor 111 directly measures a part of the magnetic field generated around the power cable 51, unlike a clamp meter that converts the magnetic field generated around the power cable 51 into a voltage by converging it on the iron core.
  • the measurement accuracy of the magnetic field by the magnetic sensor 111 may be lower than the measurement of the magnetic field by the clamp meter.
  • the measurement accuracy is not as high as that of the clamp meter, it is possible to determine whether or not current is flowing through the power cable 51 based on the measurement result by the magnetic sensor 111. For this reason, it is possible to perform management related to the welding work, such as grasping the operating status of the welding apparatus 101 using the magnetic sensor 111.
  • the magnetic sensor 111 is, for example, an IC (Integrated Circuit) chip including a sensor unit 21 that measures a magnetic field and a processing circuit 22 that performs wireless communication.
  • the magnetic sensor 111 is fixed to the power cable 51 using a band 65 or the like.
  • the sensor unit 21 covers a part of the outer periphery of the power cable 51, for example, a portion of 50% or less of the outer periphery. More preferably, the sensor unit 21 covers a portion of 30% or less of the outer periphery of the power cable 51.
  • the sensor unit 21 measures, for example, a magnetic field generated in the conductive line 61 closest to itself among the plurality of conductive lines 61 as a magnetic field generated in the power cable 51.
  • the processing circuit 22 transmits a wireless signal including magnetic field information indicating a measurement result by the sensor unit 21 to the management apparatus 201.
  • the magnetic sensor 111 can be installed regardless of the size and type of the diameter of the power cable 51, for example, a plurality of welding devices 101 are provided, and each welding device 101 is provided. Even if the diameters of the power cables 51 connected to each other are different from each other, the same magnetic sensor 111 can be installed for each power cable 51.
  • FIG. 3 is a diagram showing an example (part 2) of the installation position of the magnetic sensor according to the embodiment of the present invention. In FIG. 3, the cross section of the welding cable 54 and the magnetic sensor 111 are shown.
  • a power cable 51 including a plurality of conductive wires 61 and a welding material M, a control cable 52, and a gas cable 53 are accommodated in the welding cable 54.
  • the magnetic sensor 111 may be installed on the welding cable 54 instead of being installed on the power cable 51. That is, the magnetic sensor 111 may be locally installed in the circumferential direction of the welding cable 54.
  • the distance between the magnetic sensor 111 and the power cable 51 differs depending on the installation position of the magnetic sensor 111 with respect to the welding cable 54. That is, when the magnetic sensor 111 is installed at a position relatively far from the power cable 51 accommodated in the welding cable 54, the magnetic sensor 111 may not be able to accurately measure the magnetic field generated in the power cable 51. is there. For this reason, as shown in FIG. 2, the magnetic sensor 111 is preferably installed directly on the power cable 51.
  • FIG. 4 is a diagram showing the configuration of the management apparatus according to the embodiment of the present invention.
  • management device 201 includes acquisition unit 11, processing unit 12, storage unit 13, and output unit 14.
  • the acquisition unit 11 receives the magnetic field information transmitted from the magnetic sensor 111 via the access point 151 and the internal network 401, and outputs the received magnetic field information to the processing unit 12.
  • the processing unit 12 stores, for example, the magnetic field information received from the acquisition unit 11 in the storage unit 13 in association with date / time information indicating the current date / time. And the process part 12 performs the process regarding welding work based on the magnetic field information preserve
  • the output unit 14 outputs the contents of the result information received from the processing unit 12 in a recognizable manner. Specifically, the output unit 14 displays characters or the like indicating the content of the result information on the monitor of the terminal device 202, for example. Hereinafter, details of processing by the processing unit 12 will be described.
  • the processing unit 12 reads, for example, magnetic field information stored in the storage unit 13 as a process related to welding work, and based on the read magnetic field information, the welding apparatus The operation status of the welding operation is judged, and the working time of the welding work is calculated.
  • the processing unit 12 determines that a current is flowing through the power cable 51 and the welding apparatus 101. Is determined to be in operation.
  • the processing unit 12 determines that no current flows through the power cable 51, and the welding apparatus 101 is not operating. Judge that there is.
  • the processing unit 12 refers to the date and time information associated with the magnetic field information, for example, and makes the above determination for each of the plurality of magnetic field information stored in the storage unit 13 in a predetermined period such as one week. Do. Thereby, the process part 12 calculates the operation time of the welding apparatus 101 in the said predetermined period as a work time of welding work.
  • the processing unit 12 calculates the current value Y of the direct current flowing through the power cable 51 based on the magnetic field information read from the storage unit 13 as a process related to the welding work, for example.
  • the storage unit 13 stores current magnetic field information indicating a relational expression f between the current value Y of the direct current flowing through the power cable 51 and the magnetic field strength X generated in the power cable 51.
  • the relational expression f is calculated by the processing unit 12 at the time of initial setting before the start of the welding work, for example.
  • FIG. 5 is a diagram showing a correspondence relationship between the value of the direct current flowing through the power cable and the strength of the magnetic field generated in the power cable in the management system according to the embodiment of the present invention.
  • the vertical axis of the graph shown in FIG. 5 indicates the current value Y, and the horizontal axis indicates the magnetic field strength X.
  • the administrator attaches a current sensor to the power cable 51 at the time of initial setting.
  • the current sensor is, for example, a handy type DC current sensor, measures the current value Y, and transmits current information indicating the measurement result to the management apparatus 201. Then, the acquisition unit 11 in the management device 201 receives the current information transmitted from the current sensor, and outputs the received current information to the processing unit 12.
  • the processing unit 12 calculates the relational expression f based on the current value Y indicated by the current information from the current sensor and the magnetic field strength X indicated by the magnetic field information from the magnetic sensor 111.
  • the processing unit 12 when receiving current information from the acquisition unit 11, the processing unit 12 reads the latest magnetic field information stored in the storage unit 13, reads the current value Y indicated by the current information, and the read magnetic field information. The magnetic field strength X shown is correlated. Then, the processing unit 12 calculates the relational expression f using a plurality of sets of the current value Y and the magnetic field strength X that are associated in this way.
  • the relational expression f is calculated.
  • the processing unit 12 is not limited to the above calculation method, and may calculate the relational expression f by linear regression analysis using a plurality of sets of the current value Y and the magnetic field strength X, for example. .
  • the processing unit 12 calculates the relational expression f
  • the processing unit 12 stores the current magnetic field information indicating the calculated relational expression f in the storage unit 13.
  • the process part 12 outputs the completion information which shows that the preservation
  • the output unit 14 receives the completion information from the processing unit 12, the output unit 14 displays, for example, on the monitor of the terminal device 202 that the storage of the current magnetic field information is completed. Then, when the administrator grasps that the storage of the current magnetic field information is completed by checking the display on the monitor, the administrator removes the current sensor from the power cable 51.
  • the processing unit 12 receives magnetic field information from the magnetic sensor 111 via the access point 151, the internal network 401, and the acquisition unit 11, the relational expression f indicated by the current magnetic field information stored in the storage unit 13. And the current value Y is calculated based on the magnetic field strength X indicated by the magnetic field information.
  • the processing unit 12 may be configured to calculate a relational expression f indicating a correspondence relationship between the temperature, the current value Y, and the magnetic field strength X at the time of initial setting.
  • a temperature sensor is provided around the welding apparatus 101.
  • the temperature sensor measures the environmental temperature of the welding apparatus 101 and transmits temperature information as a measurement result to the management apparatus 201 via the access point 151 and the internal network 401.
  • the processing unit 12 uses the temperature indicated by the temperature information, for example, For each range, a relational expression f indicating the correspondence between the current value Y and the magnetic field strength X is calculated.
  • the processing unit 12 is configured such that when the environmental temperature of the welding apparatus 101 is 10 ° C. or less, when the environmental temperature is 10 ° C. to 20 ° C., when the environmental temperature is 20 ° C. to 30 ° C., and A plurality of relational expressions f indicating the correspondence between the current value Y and the magnetic field strength X in each case where the temperature is 30 ° C. or higher are calculated. Then, the processing unit 12 stores the current magnetic field information indicating the calculated plurality of relational expressions f in the storage unit 13.
  • the processing unit 12 when the processing unit 12 receives the temperature information from the temperature sensor, the processing unit 12 corresponds to the temperature indicated by the temperature information from among a plurality of relational expressions f indicated by the current magnetic field information stored in the storage unit 13.
  • the relational expression f is specified.
  • the processing unit 12 calculates the current value Y based on the magnetic field strength X indicated by the magnetic field information and the specified relational expression f.
  • the storage unit 13 stores speed information indicating a correspondence relationship between the current value Y of the direct current flowing through the power cable 51 and the welding speed of the welding material M. Then, the processing unit 12 calculates the welding amount based on the speed information stored in the storage unit 13 and the work time calculated by the method described in “(a) Calculation of work time”.
  • the speed information indicates a graph indicating a correspondence relationship between the type of the welding material M, the diameter of the welding material M, the current value Y, and the welding speed of the welding material M.
  • FIG. 6 is a diagram showing a graph indicating the speed information stored in the storage unit in the management apparatus according to the embodiment of the present invention.
  • the vertical axis of the graph shown in FIG. 6 indicates the welding rate [g / min], and the horizontal axis indicates the current value Y [A].
  • the terminal device 202 when the administrator inputs the type and diameter of the welding material M to the terminal device 202 at the time of initial setting, the terminal device 202 notifies the management device 201 of the input content. Then, an information acquisition unit (not shown) in the management device 201 outputs material information indicating the type and diameter of the welding material M notified from the terminal device 202 to the processing unit 12.
  • the processing unit 12 receives the material information received from the information acquisition unit, the current value Y calculated by the method described in “(b) Calculation of current value”, and the speed information stored in the storage unit 13, that is, FIG.
  • the welding speed of the welding material M is specified based on the graph shown in FIG.
  • Part 12 specifies 75 g / min as the welding rate.
  • the process part 12 may calculate the usage-amount of shielding gas further based on the calculated welding amount as a process regarding welding work. For example, the processing unit 12 calculates (constant K) ⁇ (welding amount of the welding material M) as the usage amount of the shielding gas.
  • the process part 12 specifies the welding posture of the operator in welding work further based on the calculated electric current value Y as a process regarding welding work.
  • the storage unit 13 includes a correspondence table showing correspondence between three parameters, that is, correspondence between the diameter of the welding material M and the current value Y of the direct current flowing through the power cable 51 and the welding posture. T is stored.
  • FIG. 7 is a diagram showing a correspondence table stored in the storage unit in the management apparatus according to the embodiment of the present invention.
  • the processing unit 12 specifies the welding posture of the worker based on, for example, the material information received from the information acquisition unit described above, the calculated current value Y, and the correspondence table T stored in the storage unit 13.
  • the processing unit 12 specifies “standing” as the welding posture.
  • the processing unit 12 further uses at least one of the calculated work time, the welding amount of the welding material M, the amount of use of the shielding gas, and the specified welding posture as the processing related to the welding work. Further, it may be configured to calculate the production cost of the product and evaluate the quality of the product.
  • the processing unit 12 outputs product information indicating the calculated production cost and quality evaluation result to the output unit 14, and the output unit 14 can recognize the content indicated by the product information received from the processing unit 12. Output to.
  • FIG. 8 is a diagram showing an example of a flowchart defining an operation procedure at the time of initial setting of the management system according to the embodiment of the present invention.
  • Each device in the management system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following sequence from a memory (not shown).
  • an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following sequence from a memory (not shown).
  • Each of the programs of the plurality of apparatuses can be installed from the outside.
  • the programs of the plurality of devices and the plurality of sensors are distributed while being stored in the recording medium.
  • the administrator prepares magnetic sensor 111 and management device 201 (step S11).
  • the administrator installs the magnetic sensor 111 and the current sensor on the power cable 51 (step S12).
  • the administrator inputs the type and diameter of the welding material M to the terminal device 202, and the terminal device 202 notifies the input content to the management device 201 (step S13).
  • the management apparatus 201 determines the current value Y of the direct current flowing through the power cable 51 based on the magnetic field strength X indicated by the magnetic field information from the magnetic sensor 111 and the current value Y indicated by the current information from the current sensor. And a relational expression f between the magnetic field strength X generated in the power cable 51 is calculated (step S14).
  • the management device 201 stores the current magnetic field information indicating the calculated relational expression f, and notifies the fact that the storage of the current magnetic field information is completed by displaying it on the monitor of the terminal device 202 or the like (step S15). .
  • the administrator grasps that the storage of the current magnetic field information is completed by confirming the display on the monitor or the like, the administrator removes the current sensor from the power cable 51 (step S16). Note that the administrator may input the type and diameter of the welding material M (step S13) after removing the current sensor.
  • FIG. 9 is a diagram showing an example of a flowchart defining an operation procedure during operation of the management system according to the embodiment of the present invention.
  • management device 201 receives magnetic field information transmitted from magnetic sensor 111 (step S21). And the management apparatus 201 judges whether the electric current is flowing into the power cable 51 based on the received magnetic field information, and judges whether the welding apparatus 101 is operating based on the judgment result. (Step S22).
  • the management device 201 calculates the working time of the welding work based on the determination result of whether or not the welding device 101 is in operation (step S23).
  • the management device 201 calculates the current value Y of the direct current flowing through the power cable 51 based on the magnetic field information transmitted from the magnetic sensor 111 and the current magnetic field information stored at the time of initial setting (step S24). .
  • the management device 201 specifies the welding speed of the welding material M based on the type and diameter of the welding material M notified from the terminal device 202 and the calculated current value Y at the time of initial setting ( Step S25).
  • the management device 201 calculates the welding amount of the welding material M and the usage amount of the shielding gas based on the specified welding speed and the calculated work time (step S26).
  • the management device 201 identifies the welding posture of the operator based on the diameter of the welding material M, the current value Y, and the posture information stored in advance (step S27).
  • the management apparatus 201 calculates the production cost of the product and evaluates the quality based on the calculated work time, the welding amount of the welding material M and the usage amount of the shield gas, and the specified welding posture (step S28). ).
  • the management device 201 outputs, for example, the operation time, the welding amount of the welding material M, the usage amount of the shield gas, the welding posture, the production cost, and the quality evaluation result as recognizable results (step S29). .
  • the management apparatus 201 determines whether or not the welding apparatus 101 is in operation (step S22), calculates a working time (step S23), calculates a current value Y (step S24), and specifies a welding speed (step). S25), calculation of the welding amount of the welding material M and the usage amount of the shielding gas (step S26), specification of the welding posture (step S27), calculation of production cost and evaluation of quality (step S28) are performed.
  • the configuration is not limited to the configuration, and may be a configuration that performs a part of the above-described processing, for example.
  • FIG. 10 is a diagram showing a configuration of a management system according to a modification of the embodiment of the present invention.
  • the management system 301 may include one or more welding apparatuses 101 instead of one or more welding apparatuses 101, one or more welding torches 121, and one or more gas cylinders 132. Good.
  • the welding apparatus 102 is, for example, a covered arc welder, and is assigned to each worker. The worker installs the welding apparatus 102 near the work place before the start of the welding work, and connects one end of the power cable 51 to a terminal (not shown) of the welding apparatus 102.
  • the worker connects the other end of the power cable 51 to a terminal (not shown) of the power supply device 131. Further, the operator connects one end of the grounding cable 55 to the base material A that is an object to be welded, and connects the other end of the grounding cable 55 to a terminal (not shown) of the power supply device 131.
  • the welding apparatus 102 operates by receiving a direct current supplied from the power supply apparatus 131 via the power supply cable 51.
  • the welding rod Ma attached to the tip of the welding apparatus 102 serves as an electrode, and the welding rod Ma and the base material A are melted and integrated by heat generated by the arc generated between the welding rod Ma and the base material A. To do.
  • the magnetic sensor 111 is installed in the power cable 51, measures the magnetic field generated in the power cable 51, and uses the magnetic field information indicating the measurement result as the access point 151 and the internal network.
  • the data is transmitted to the management apparatus 201 via 401.
  • the management apparatus 201 receives the magnetic field information from the magnetic sensor 111 similarly to the management apparatus 201 shown in FIG. 1, and performs the process regarding welding work based on the received magnetic field information.
  • Patent Document 1 describes a system including a recording device that is built in a welding apparatus and records welding data related to a welding operation, and a management device that collects the welding data and processes the collected welding data. Has been.
  • the format of the welding data transmitted from the recording device built in the welding apparatus may differ depending on the type of the welding apparatus, that is, the manufacturer or model of the welding apparatus.
  • a welding apparatus that does not include a recording device, such as an old welding apparatus may be provided. In such a case, it is difficult to manage the welding work, and it is even more difficult to manage the entire factory including a plurality of welding apparatuses in one system.
  • the magnetic sensor 111 is provided corresponding to the welding apparatus 101.
  • the management apparatus 201 performs processing related to the welding work.
  • the magnetic sensor 111 measures a magnetic field generated by a current flowing through the power cable 51 connected to the welding apparatus 101 and transmits measurement information indicating the measurement result to the management apparatus 201.
  • the management apparatus 201 receives the measurement information transmitted from the magnetic sensor 111 and performs processing based on the received measurement information.
  • the magnetic sensor 111 can be locally installed in the circumferential direction of the power cable 51.
  • the configuration in which the magnetic sensor 111 can be locally installed in the circumferential direction of the power cable 51 allows the magnetic sensor 111 to be retrofitted to the power cable 51 regardless of the size and type of the power cable 51. Can be installed at. That is, regardless of the type and number of welding apparatuses 101 to which the power cable 51 is connected, the magnetic sensor 111 can be installed in association with the welding apparatus 101. Therefore, regardless of the type and number of the installed welding apparatuses 101, it is possible to manage the welding operation.
  • the magnetic sensor 111 is installed in the power cable 51 that connects the power device 131 and the welding device 101.
  • the magnetic sensor 111 is installed in the power cable 51 for supplying electric power to the welding apparatus 101, thereby accurately measuring the magnetic field generated by the direct current supplied to the welding apparatus 101 and managing the welding operation. Can be performed more accurately.
  • the management device 201 determines whether or not a current is flowing through the power cable 51 as the above processing based on the measurement information from the magnetic sensor 111.
  • the management device 201 calculates the work time of the welding work as the above process based on the measurement information from the magnetic sensor 111.
  • the management device 201 calculates the current value Y of the direct current flowing through the power cable 51 as the above processing based on the measurement information from the magnetic sensor 111.
  • the management apparatus 201 further calculates the welding amount of the welding material M as the above processing based on the calculated current value Y.
  • the management device 201 uses the welding material M based on the type of the linear welding material M, the diameter of the welding material M, and the calculated current value Y.
  • the welding amount of M is calculated.
  • the amount of welding can be calculated more accurately in consideration of the type and diameter of the welding material M.
  • the management apparatus 201 welds the welding material M based on the type of the welding material M, the diameter of the welding material M, and the calculated current value Y.
  • the speed is specified, and the welding amount of the welding material M is calculated based on the specified welding speed.
  • the welding amount of the welding material M can be calculated more accurately by an appropriate method.
  • the management device 201 specifies the welding posture of the worker as the above processing based on the calculated current value Y.
  • the difficulty level of the welding operation can be grasped based on the welding posture, and the production cost of the product and the evaluation of the quality of the product can be performed according to the difficulty level of the welding operation.
  • the acquisition unit 11 acquires measurement information indicating the measurement result of the magnetic field generated by the direct current flowing through the power cable 51 connected to the welding apparatus 101. Further, the processing unit 12 calculates the current value Y of the direct current based on the measurement information acquired by the acquisition unit 11, and calculates the welding amount of the welding material M based on the calculated current value Y.
  • the product production cost can be calculated and the product quality can be evaluated based on the welding amount of the welding material M.
  • the acquisition unit 11 acquires measurement information indicating a measurement result by the magnetic sensor 111 installed in the power cable 51 that connects the power device 131 and the welding device 101. To do.
  • the magnetic sensor 111 is installed in the power cable 51 for supplying electric power to the welding apparatus 101, thereby accurately measuring the magnetic field generated by the direct current supplied to the welding apparatus 101 and managing the welding operation. Can be performed more accurately.
  • the sensor installation method in the management system 301 includes the steps of preparing the magnetic sensor 111 and the management device 201, and the magnetic sensor 111 to the power cable 51 connecting the power supply device 131 and the welding device 101. And installing a step.
  • the magnetic sensor 111 can be retrofitted with respect to the power cable 51 regardless of the size and type of the diameter of the power cable 51. That is, regardless of the type and number of welding apparatuses 101 to which the power cable 51 is connected, the magnetic sensor 111 can be installed in association with the welding apparatus 101. Therefore, regardless of the type and number of the installed welding apparatuses 101, it is possible to manage the welding operation.
  • the configuration in which the magnetic sensor 111 is installed in the power cable 51 for supplying power to the welding apparatus 101 accurately measures the magnetic field generated by the direct current supplied to the welding apparatus 101, thereby further managing the welding operation. Can be done accurately.
  • the management apparatus 201 is not limited to a configuration that performs processing related to the welding operation, and is, for example, another type of apparatus other than the welding apparatus 101 and driven by a current supplied through a cable. It is possible to perform processing relating to the device to be performed.
  • the management device 201 acquires measurement information indicating the measurement result of the magnetic field generated by the current flowing through the cable, and determines whether or not current is flowing through the cable based on the acquired measurement information. Based on the determination result, the management device 201 can manage, for example, the operating status of the device driven by the current supplied through the cable. Moreover, the management apparatus 201 can also predict the failure time of the apparatus based on the operating status of the apparatus, for example.
  • part or all of the functions of the management apparatus 201 according to the embodiment of the present invention may be provided by cloud computing. That is, at least one of the management apparatuses 201 may be configured by a plurality of cloud servers or the like.
  • a magnetic sensor provided corresponding to the welding device; A management device for processing related to welding work, The magnetic sensor measures a magnetic field generated by a current flowing in a cable connected to the welding apparatus, and transmits measurement information indicating a measurement result to the management apparatus.
  • the management device receives the measurement information transmitted from the magnetic sensor, performs the processing based on the received measurement information,
  • the magnetic sensor can be locally installed in the circumferential direction of the cable,
  • the welding apparatus is a semi-automatic welding machine or a coated arc welding machine,
  • the cable is a power cable for supplying a direct current to the welding apparatus,
  • a plurality of the welding apparatus and the magnetic sensor are provided,
  • the management device performs processing related to the welding work for each welding device based on the plurality of measurement information respectively transmitted from the plurality of magnetic sensors, and outputs the processing result in a recognizable manner,
  • the management system in which the plurality of cables connected to the plurality of welding apparatuses have different diameters.
  • An acquisition unit for acquiring measurement information indicating a measurement result of a magnetic field generated by a current flowing in a cable connected to the welding apparatus; Based on the measurement information acquired by the acquisition unit, to calculate the current value of the current, based on the calculated current value, a processing unit to calculate the welding amount of the welding material, An output unit for recognizing and outputting a processing result by the processing unit,
  • the welding apparatus is a semi-automatic welding machine or a coated arc welding machine,
  • the cable is a power cable for supplying a direct current to the welding apparatus,
  • a plurality of the welding devices are provided,
  • the acquisition unit acquires a plurality of measurement information respectively corresponding to the plurality of welding apparatuses,
  • the processing unit performs processing related to a welding operation for each welding apparatus based on the plurality of pieces of measurement information acquired by the acquisition unit,

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Arc Welding Control (AREA)
  • General Factory Administration (AREA)

Abstract

L'invention concerne un système de gestion (301) équipé : d'un capteur magnétique (111) qui est prévu correspondant à un dispositif de soudage (101) ; et d'un dispositif de gestion (201) qui effectue un traitement relatif à des opérations de soudage. Le capteur magnétique (111) mesure un champ magnétique généré en raison d'un courant circulant dans un câble (51) connecté au dispositif de soudage (101) et transmet, au dispositif de gestion (201), des informations de mesure indiquant des résultats de mesure et le dispositif de gestion (201) reçoit les informations de mesure transmises par le capteur magnétique (111) et effectue le traitement sur la base des informations de mesure ainsi reçues. Le capteur magnétique (111) peut être installé localement dans la direction circonférentielle du câble (51).
PCT/JP2017/042030 2017-01-20 2017-11-22 Système de gestion, dispositif de gestion, procédé d'installation de capteur, procédé de gestion et programme de gestion WO2018135129A1 (fr)

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JP2017-008827 2017-01-20
JP2017008827A JP6748584B2 (ja) 2017-01-20 2017-01-20 管理システムおよびセンサ設置方法

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CN115121912B (zh) * 2022-06-27 2023-08-22 湘潭大学 一种用于多极磁控gtaw电弧传感器的励磁电流标定方法
CN117548928B (zh) * 2024-01-12 2024-04-12 杭州峰景科技有限公司 一种焊机物联设备的芯片调度方法及装置

Citations (5)

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JPS59193764A (ja) * 1983-04-18 1984-11-02 Matsushita Electric Ind Co Ltd ア−ク溶接機の溶接電流検出装置
JPS60255288A (ja) * 1984-05-30 1985-12-16 Dengensha Mfg Co Ltd 通電有無検出装置
JPH0811293B2 (ja) * 1985-06-17 1996-02-07 新キャタピラ−三菱株式会社 測定装置
US20160175963A1 (en) * 2014-12-18 2016-06-23 Illinois Tool Works Inc. Systems and methods for solid state sensor measurements of welding cables
DE102015225043A1 (de) * 2015-12-14 2017-06-14 Robert Bosch Gmbh Schweißgerät mit Erfassungsvorrichtung zur Erfassung magnetischer Felder

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JPS561275A (en) * 1979-06-20 1981-01-08 Susumu Nishikawa Welding defect supervising unit of automatic welding machine

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Publication number Priority date Publication date Assignee Title
JPS59193764A (ja) * 1983-04-18 1984-11-02 Matsushita Electric Ind Co Ltd ア−ク溶接機の溶接電流検出装置
JPS60255288A (ja) * 1984-05-30 1985-12-16 Dengensha Mfg Co Ltd 通電有無検出装置
JPH0811293B2 (ja) * 1985-06-17 1996-02-07 新キャタピラ−三菱株式会社 測定装置
US20160175963A1 (en) * 2014-12-18 2016-06-23 Illinois Tool Works Inc. Systems and methods for solid state sensor measurements of welding cables
DE102015225043A1 (de) * 2015-12-14 2017-06-14 Robert Bosch Gmbh Schweißgerät mit Erfassungsvorrichtung zur Erfassung magnetischer Felder

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