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JP2010134888A - Method and system for monitoring equipment operation - Google Patents

Method and system for monitoring equipment operation Download PDF

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Publication number
JP2010134888A
JP2010134888A JP2008335947A JP2008335947A JP2010134888A JP 2010134888 A JP2010134888 A JP 2010134888A JP 2008335947 A JP2008335947 A JP 2008335947A JP 2008335947 A JP2008335947 A JP 2008335947A JP 2010134888 A JP2010134888 A JP 2010134888A
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equipment
supply current
current value
item
computer
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浩樹 ▲高▼野
Hiroki Takano
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I-FORESIGHT CO Ltd
Foresight Co Ltd
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I-FORESIGHT CO Ltd
Foresight Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30Computing systems specially adapted for manufacturing

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  • Testing And Monitoring For Control Systems (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • General Factory Administration (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that it is necessary to remodel equipment to take out a signal matched to an equipment operating state, large-scale operations and costs such as costs in accordance with remodeling, stop of the equipment in remodeling, laying of a signal line to the equipment are required when operation monitoring of the equipment is performed, and in addition, in the case of only the operation monitoring of the equipment, it is necessary to perform input of items to a computer, and to cooperate with other system to specify an item since a record of operation stop of the equipment, etc. can be grasped, however, an item produced at the time can not be grasped. <P>SOLUTION: Power supply current supplied to the equipment is measured by a CT (current transformer), and what operation of operation/stop of the equipment is performed is determined by a computer from variation of a current value of the power supply current. In addition, the item to be produced is specified by comparing the measured current value and the elapsed time with preset current value and time by the computer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、工場での設備稼働監視に関するものである。The present invention relates to facility operation monitoring in a factory.

(イ)生産工場内の生産設備における稼働監視を行う場合においては、設備の運転状態(停止中・運転準備中・生産中等)を設備の操作パネル等の操作信号を基に、各設備の信号を収集し運転状態を監視する必要が有った。この電気信号を取りだすために、装置自体の改造を行い電気信号の取り出しその信号を収集するため、設備毎に信号を収集する信号ケーブルの敷設を行いコンピュータ等に接続し設備の稼働監視が行われてきた。
外部に信号を取り出すためには、目的とした状態時にのみ電圧が印加される電気回路等を探しだし、その信号を外部へオン・オフのデジタル信号として取り出す等の改造を行い、その信号を収集装置や稼働率計に接続し運転状態を監視する方法や、設備の制御を行っている制御プログラムの改造を行い、制御プログラムで設備状態を判断し、その結果を収集し運転状態を監視する方法が取られてきた。
また、設備で何の品目を生産されたかは、信号を収集し稼働監視をおこなっているコンピュータへ入力したり、生産管理システム等と連動させることをで生産品目と設備運転状態を一致させデータを管理していた。
(ロ)その他[特許文献]抜粋による、
特許出願2000−322644[発明の名称]設備稼働管理装置
特許出願2000−309265[発明の名称]設備稼働管理装置
特許出願2000−57544[発明の名称]設備稼働管理システム
特許出願平11−222586[発明の名称]設備稼働状態計測装置
及び方法
(B) When monitoring the operation of production equipment in a production plant, the equipment operation status (stopped, preparing for operation, in production, etc.) is determined based on the operation signals on the equipment operation panel. It was necessary to collect and monitor the operation state. In order to extract this electrical signal, the device itself is modified, the electrical signal is taken out, and the signal is collected. In order to collect the signal, the signal cable for laying the signal is laid for each facility and connected to a computer or the like to monitor the operation of the facility. I came.
In order to extract a signal to the outside, search for an electric circuit to which a voltage is applied only in the intended state, etc., modify it to extract it as an on / off digital signal, and collect the signal A method of monitoring the operating status by connecting to a device or an availability meter, or a method of modifying the control program that controls the equipment, judging the equipment status using the control program, collecting the results, and monitoring the operating status Has been taken.
Also, what items have been produced by the equipment can be input to a computer that collects signals and monitors operation, or linked with a production management system, etc. I was managing.
(B) Other [Patent Literature] extract
Patent Application 2000-322644 [Title of Invention] Facility Operation Management Device Patent Application 2000-309265 [Title of Invention] Facility Operation Management Device Patent Application 2000-57544 [Title] Facility Operation Management System Patent Application Hei 11-222586 [Invention] Name] Equipment operating state measuring device and method

その為に、次のような問題があった。
(イ) 設備の運転状態の収集では、設備の停止、運転準備、生産、等の様々な状態に分類され、さらに、生産中の状態で有っても加工を行う品目(部品)の搬入動作や加工動作、搬出動作等の工程毎に設備が動作するユニットや機構が異なり、設備の動作箇所が変移している。この状態変移を知る為には、その動作が変わる都度、動作に対応した信号線を外部に出力するための改造を行い、コンピュータに接続しデータを収集する必要が有った。
(ロ) 設備の改造を行う場合、設備毎に電気回路が異なるため、改造の内容は設備毎に異なり設備毎に改造方法の検討・検証し行う必要があり、改造中の操業停止、改造費用、時間を要する問題が有った。
(ハ) 設備の運転状態変移の信号をコンピュータで収集する為に、工場内の設備毎に信号ケーブルを敷設し収集用のコンピュータの設置場所へ敷設し接続する必要があり、大規模な工場内での信号ケーブル敷設工事の必要が有った。
(ニ) 設備の制御がプログラムで行われている場合、制御プログラムの解析を行い、改造を行う必要があり、プログラムが開示されていない場合、改造ができない問題が有った。
(ホ) 改造をユーザーが独自に行った場合の設備トラブル発生時は、設備の責任所在が不明確に成り、トラブル発生原因の責任等や復旧までの時間の長期化等の付随した問題も発生する。
(ヘ) コンピュータで収集した設備の運転状態の信号は各状態変移が起こった時間を記録するのみで、その設備で生産が行われた品目が特定できないため、収集した稼働実績に対して他の方法にて品目のデータを追加しなければならない問題が有った。
Therefore, there were the following problems.
(B) The collection of equipment operation status is classified into various states such as equipment stoppage, operation preparation, production, etc., and the operation of carrying in items (parts) to be processed even in the production state Units and mechanisms that operate the equipment are different for each process such as machining operation and unloading operation, and the operating location of the equipment has changed. In order to know this state change, it was necessary to make modifications to output the signal line corresponding to the operation to the outside each time the operation changed, and to connect to a computer and collect data.
(B) When remodeling equipment, the electrical circuit differs from equipment to equipment, so the contents of the modification differ from equipment to equipment, and it is necessary to examine and verify the modification method for each equipment. There was a problem that took time.
(C) In order to collect equipment operating state change signals with a computer, it is necessary to install a signal cable for each equipment in the factory and install it at the place where the computer for collection is installed. There was a need to lay signal cables in
(D) When equipment is controlled by a program, it is necessary to analyze the control program and modify it. If the program is not disclosed, there is a problem that modification is not possible.
(E) When an equipment trouble occurs when the user performs the modification on his own, the responsibility of the equipment becomes unclear, and there are incidental problems such as the responsibility for the cause of the trouble and prolonged time to recovery. To do.
(F) The equipment operation state signal collected by the computer only records the time at which each state transition occurred, and the items produced by the equipment cannot be identified. There was a problem that data of items had to be added by the method.

問題を解決する為の手段Means to solve the problem

上記の課題を解決するため、本発明の請求項1では、工場内の生産設備において各設備に供給される電源に電流トランス(以下:CT)を取り付け、CTで設備に対する供給電流を計測し、設備の運転状態で変化する供給電流と設備運転状態の関係により運転状態を判断することを特徴とする方法。
CTの取り付けは、工場内に設置された配電盤等に取り付ければ良く、設備の改造及び設備までの信号ケーブルの敷設、設備制御プログラムの改造、操業停止を行わず、正確な運転状態を判断できること特徴とする方法である。
設備の供給電流と運転状態の例を図2に示す。この例は切削加工を行う自動機を想定した例である。
(10)に示す時間は、設備への電流が供給されていないために、設備が停止中の時間であることが解る、次に作業者がワーク(被加工物)をセットするために主電源の投入を行うと、ワークをセットに要した時間(11)の間は、(16)の少ない電流が供給されていることが解る、次に作業者がワークのセットが完了し加工開始を指示する操作を行うと、ワーク搬送の為の機構が動作し(17)まで供給電流が増加する、ワークの搬送を開始し完了するまで要した時間が(12)となる、次に切削加工を行う機構が動作するため(18)まで供給電流が増加し、切削加工が行われた時間が(13)と解る、切削加工が完了すると(17)まで供給電流が減少し、ワークを搬送する為の機構が動作し、ワーク搬送のために要した時間が(14)とわかり、ワーク搬送の機構が停止すると(16)まで供給電流が減少し、作業者がワークを設備より取出し作業が主電源を切るまでの(15)の時間を要したことが解る。
この供給電流の判断範囲と増加・減少の順番をコンピュータで判断することにより設備の運転状態を知る事ができることを特徴とした方法。
図3は、実際の設備のデータを実測した参考グラフである。
本発明の請求項2では、請求項1に加え、CTとCTに接続されたA/D(アナログ・デジタル)変換装置を介してコンピュータに接続され構成される。コンピュータはCTで計測した設備への供給電流値または、しきい値で判断された結果を定周期で収集し、収集した値に収集を行ったチャンネル(設備)、収集した時刻を稼働監視システムのデータベースに記録する常時収集する手段と、設備の基本動作の進捗(以下:動作ステップ)を管理するため、予め設定された動作ステップマスタに記録された、動作ステップを判断する基準供給電流値と、収集を行った供給電流値との比較を行い、条件を満たした場合、動作ステップマスタ内の一つの動作ステップが開始または完了したと判断し、実績データを実績データベースに記録し、動作ステップ判断マスタより次の動作ステップでの基準供給電流値を読みだし次の動作ステップの開始・終了の判断を供給電流値で行う手段を有し、この処理を繰返し、記録する事で設備全体の主電源投入から主電源切断までの各動作ステップ毎の動作時間を設備に対する電源供給電流を稼働監視することで実現することを特徴とする稼働監視システム。
本発明の請求項3では、請求項1および請求項2に加え、生産品目を特定するための基準供給電流値及び基準動作時間を各動作ステップ毎に記録した品目マスタを準備し、請求項2の内容で得られた設備の各動作ステップ毎の動作実績時間と実績供給電流値を、品目マスタの基準供給電流値と基準動作時間との比較を行い、条件を満たした品目を抽出することで設備が生産している品目を特定することを特徴とする稼働監視システム。
請求項2での動作ステップマスタでの判断はその設備の基本動作(動作ステップ)を判断することを目的するため、生産品目による供給電流値の固有差が発生しても動作ステップの判断を確実に行うため、基準供給電流値の判断範囲を広げ、供給電流値と基準供給電流値の判断を行う。
請求項3での品目マスタでの判断は品目の特定を目的とし、各動作ステップ毎の供給電流値とその動作実績時間が請求項2の処理で既知であるため、各動作ステップの基準供給電流値での判断範囲は品目特定のために狭く設定し、品目毎の供給電流の固有差と動作時間の固有差より判断し品目を特定する。
In order to solve the above problems, in claim 1 of the present invention, a current transformer (hereinafter referred to as CT) is attached to a power source supplied to each facility in a production facility in a factory, and a supply current to the facility is measured by CT. A method of judging an operation state based on a relationship between a supply current that changes depending on an operation state of the equipment and the equipment operation state.
The CT can be installed on a switchboard installed in the factory, and it is possible to judge the exact operating state without modifying the equipment, laying the signal cable to the equipment, modifying the equipment control program, and stopping the operation. It is a method.
An example of the supply current and operating state of the equipment is shown in FIG. In this example, an automatic machine that performs cutting is assumed.
The time shown in (10) indicates that the equipment is stopped because no current is supplied to the equipment. Next, the main power supply for the operator to set the workpiece (workpiece) When the workpiece is input, it can be seen that during the time (11) required to set the workpiece, a small current of (16) is supplied. Next, the operator completes the workpiece setting and instructs the start of machining. When the operation is performed, the mechanism for transferring the workpiece operates and the supply current increases until (17). The time required for starting and completing the transfer of the workpiece is (12). Next, cutting is performed. Since the mechanism operates, the supply current increases until (18), and the time when the cutting process is performed is understood as (13). When the cutting process is completed, the supply current decreases until (17), and the workpiece is conveyed. The time when the mechanism is activated and the workpiece is transported (1 ) And understand supplies current decreases until the mechanism of the workpiece transfer is stopped (16), the operator it can be seen that it took a time of (15) to take out the work from the work equipment off the main power.
A method characterized in that the operating state of the equipment can be known by judging with a computer the judgment range of the supply current and the order of increase / decrease.
FIG. 3 is a reference graph obtained by actually measuring actual facility data.
According to claim 2 of the present invention, in addition to claim 1, it is connected to a computer via an A / D (analog / digital) converter connected to CT and CT. The computer collects the supply current value to the equipment measured by CT or the result judged by the threshold at regular intervals, the channel (equipment) that collected the collected value, and the collected time of the operation monitoring system A means for constantly collecting data recorded in the database, and a reference supply current value for judging an operation step recorded in a preset operation step master in order to manage the progress of the basic operation of the equipment (hereinafter referred to as operation step), Compared with the collected supply current value, if the condition is satisfied, it is determined that one operation step in the operation step master has started or completed, the actual data is recorded in the actual database, and the operation step determination master This means has means for reading the reference supply current value in the next operation step and determining the start / end of the next operation step based on the supply current value. Repeating, operation monitoring system, characterized by achieved by operation monitoring power supply current operation time of each operation step from the main power-on of the entire facilities can be recorded until the main power-off for the equipment.
According to claim 3 of the present invention, in addition to claims 1 and 2, an item master in which a reference supply current value and a reference operation time for specifying a production item are recorded for each operation step is prepared. By comparing the actual operation time and actual supply current value for each operation step of the equipment obtained with the contents of the item with the reference supply current value of the item master and the standard operation time, and extracting items that satisfy the conditions An operation monitoring system characterized by identifying items produced by equipment.
Since the determination by the operation step master in claim 2 is intended to determine the basic operation (operation step) of the equipment, the determination of the operation step is ensured even if there is an inherent difference in the supply current value depending on the production item. Therefore, the determination range of the reference supply current value is expanded, and the determination of the supply current value and the reference supply current value is performed.
The determination in the item master in claim 3 is for the purpose of specifying the item, and since the supply current value and the actual operation time for each operation step are known in the processing of claim 2, the reference supply current of each operation step The judgment range by value is set narrow to specify the item, and the item is specified by judging from the inherent difference of supply current and the operating time of each item.

発明の効果The invention's effect

(イ)設備の供給電流で稼働監視を行った場合、設備自体への何らかの改造や装置の取り付けを行う必要が無く、装置に電源を供給する電源ケーブルや各設備に電力を供給する配電盤の中にCTを取り付けるのみで実現できるため、設備が稼働中で有っても設置工事が可能であり操業停止の必要はなく、改造等の費用の大幅な軽減ができる。
(ロ)供給電流は、設備の運転状態に応じて変化するため設備の改造を行い、信号を外部に引きだしたと同じ状態変化を知ることができる。
(ハ)設備より信号ケーブルを引きだした場合、信号ケーブルを敷設を、設備単位に行わなければならないが、供給電流から得る場合、配電盤等の電力供給元での設置が可能で敷設工事が簡単であり、費用を大幅に削減できる。
(ニ)装置を改造するコストに対して、CTを取り付けるだけのコストを比較するとCTが非常に安価の為、導入コストの大幅な削減が可能となる。
(ホ)CTを常時監視しデータベースに記憶し供給電流値で運転状態を自動的に判断させる事で設備の運転状態をリアルタイムに把握できる。
(ヘ)設備への供給電流パターンで生産品目を特定できる為、生産品目のデータを稼働時間データに手入力したり、他システムと連携させ生産品目を特定する必要が無い。
(B) When operation monitoring is performed with the supply current of equipment, there is no need to modify the equipment itself or install equipment, and the power cable that supplies power to the equipment and the switchboard that supplies power to each equipment Since it can be realized simply by attaching a CT to the PC, installation work can be performed even if the equipment is in operation, and it is not necessary to stop the operation.
(B) Since the supply current changes according to the operating state of the equipment, it is possible to know the same state change as when the equipment is remodeled and the signal is drawn to the outside.
(C) When a signal cable is pulled out from the equipment, the signal cable must be installed for each equipment, but when it is obtained from the supply current, it can be installed at a power supply source such as a switchboard and the installation work is simple. Yes, cost can be greatly reduced.
(D) Comparing the cost of retrofitting the device with the cost of attaching the CT, the CT is very inexpensive, so the introduction cost can be greatly reduced.
(E) By constantly monitoring CT, storing it in a database, and automatically determining the operation state based on the supply current value, the operation state of the equipment can be grasped in real time.
(F) Since the production item can be specified by the supply current pattern to the equipment, it is not necessary to manually input the production item data into the operation time data or to specify the production item in cooperation with other systems.

以下、本発明の実施の形態について図面に基づいて説明する。
設備稼働監視システムは、図1に示す実施例の内容で構成される。この図は配電盤内に電流トランス(以下:CT)を設置した例である。各設備毎の電源を供給する電源ラインに(1)のCTを設置し、(2)のA/Dコンバート機能を持つ装置に接続し、CTからの(4)のアナログ信号の計測値をコンピュータが処理できるデジタル信号に変換をおこなう。
A/Dコンバータでデジタル信号化された設備への供給電流値は、デジタル信号として(3)のコンピュータへと接続されA/Dコンバータとコンピュータを接続するデジタル信号(5)は、ネットワーク等を用いて接続しコンピュータへ供給電流値を伝達する構成となる。
CTで収集した供給電流値はコンピュータで定期的に収集を行い、図4の実施例で示すコンピュータ内部の処理の内容を示す。
(41)でCTで測定した供給電流値をA/D変換を行った結果を定周期で読み込み、収集を行ったチャンネル(装置)と収集したデータと収集時刻を供給電流データベース(49)へ記録する。
設備の運転開始から終了までの間の主要な動作状態(停止、待機、搬入、加工、搬出等の区分)を判断する為の基準供給電流値を予め測定し、動作ステップマスタ(50)として動作状態(以下:動作ステップ)毎に登録する。
ここで登録する動作ステップは、生産品目に依存しないその設備の動作で予め決められた標準的な動作時の動作ステップと、その動作ステップが動作した時の最低電流供給値と最大電流供給値で、前後の動作ステップの基準供給電流値と重複しない値を設定する。
計測を行った供給電流値と動作ステップマスタ(50)に登録してある値を比較判断し(43)動作ステップがどのステップに位置するのかを決定し動作ステップ実績(51)へと記録する。
動作ステップの判断は、異なる動作ステップで同じ供給電流値や基準供給電流値になる事が想定されるため、動作ステップは順を追いながら条件判断を行うものとする。
必要に応じて動作ステップ実績(51)の情報を読みだし(44)でコンピュータの画面表示等を行う。
(45)で動作ステップが同じ動作ステップ内の値であるうちは、その動作ステップに変化してからの継続時間を求める。
供給電流値が次の動作ステップへ変化した場合、前の動作ステップの供給電流値の平均と動作ステップ継続時間を確定させる。
確定した動作ステップの供給電流値の平均と継続時間より品目マスタ(52)で設定されている基準電流値と継続時間の条件が満足する品目より生産していた可能性がある品目全てを候補品目データベース(53)に記録する。
以降、動作ステップが進んだ場合、候補品目データベースに記録された品目の動作ステップ別、基準供給電流、動作時間にて判断を行い該当する品目のみ候補品目データベースに記録し品目の絞り込みを行う。
この(41)から(46)までの処理を設備の停止条件が成立まで繰り返し行い(47)で設備が停止したと判断した場合、絞り込まれた候補品目データベースの内容と動作ステップの実績を稼働実績として稼働実績データベース(54)に記録し実施する。
図5の実施例は、実施方法におけるデータの関連と判断方法を示した例である。
Fig.1はCTからA/D変換を経て、定周期にてデータを収集した結果の設備への供給電流のグラフの例である。
この電流変化をFig.3で示した動作ステップマスタの各動作ステップ毎の基準最小電流値と、基準最大電流値で判断を行うとFig.2の動作STEP NO.1〜6パターンに分解することができる。
Fig.3では各動作ステップでの基準最小電流値と最大基準電流値の範囲は広く、生産品目の違いで供給電流が異なっても同一の動作ステップ内と判断できる様に設定してある。
これによりFig.4の動作ステップ毎の実績供給電流と実績動作時間を動作ステップ毎に知ることができ請求項2の内容で稼働ステップと稼働時間の結果を得る事ができる。
さらに、請求項3の品目の特定を行うため、Fig.4のデータとFig.6の品目マスタの条件を比較することで品目の特定が実現できる。
動作ステップマスタでは、供給電流の変化でどの動作ステップに有るかを判断するため、基準最小電流値と基準最大電流値の範囲が広いがFig.6の品目マスタの基準最小電流値と基準最大電流値の範囲を狭くすることで品目毎の固有の供給電流差と各動作ステップの時間の固有差から品目の特定を実施する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The facility operation monitoring system includes the contents of the embodiment shown in FIG. This figure is an example in which a current transformer (hereinafter referred to as CT) is installed in the switchboard. Install the CT of (1) on the power supply line that supplies power for each facility, connect it to the device with the A / D conversion function of (2), and measure the measured value of the analog signal of (4) from the CT Is converted to a digital signal that can be processed.
The supply current value to the equipment converted into a digital signal by the A / D converter is connected to the computer of (3) as a digital signal, and the digital signal (5) connecting the A / D converter and the computer uses a network or the like. Connected to transmit the supply current value to the computer.
The supply current value collected by CT is periodically collected by a computer, and shows the contents of processing inside the computer shown in the embodiment of FIG.
The result of A / D conversion of the supply current value measured by CT in (41) is read at regular intervals, and the collected channel (device), the collected data and the collection time are recorded in the supply current database (49). To do.
The reference supply current value for judging the main operation state (stop, standby, loading, processing, unloading, etc.) from the start to the end of the equipment is measured in advance and operates as the operation step master (50) Register for each state (hereinafter: operation step).
The operation steps to be registered here are an operation step at the time of standard operation determined in advance by the operation of the equipment not depending on the production item, and a minimum current supply value and a maximum current supply value when the operation step is operated. A value that does not overlap with the reference supply current value of the previous and subsequent operation steps is set.
The measured supply current value and the value registered in the operation step master (50) are compared and determined (43), the step in which the operation step is located is determined and recorded in the operation step result (51).
Since it is assumed that the operation step is determined to have the same supply current value and the reference supply current value in different operation steps, the operation step is determined in the order of condition.
If necessary, the information of the operation step record (51) is read (44) and the computer screen is displayed.
While the operation step is a value within the same operation step in (45), the duration after the change to the operation step is obtained.
When the supply current value changes to the next operation step, the average of the supply current value of the previous operation step and the operation step duration are determined.
Candidate items for all items that may have been produced from items satisfying the conditions of the reference current value and duration set in the item master (52) from the average and duration of supply current values of the determined operation steps Record in database (53).
Thereafter, when the operation step proceeds, the judgment is made based on the operation step of each item recorded in the candidate item database, the reference supply current, and the operation time, and only the corresponding item is recorded in the candidate item database to narrow down the items.
If the processing from (41) to (46) is repeated until the equipment stop condition is satisfied, and it is determined that the equipment is stopped in (47), the contents of the narrowed candidate item database and the results of the operation steps are used as the operation results. Is recorded in the operation result database (54) and implemented.
The example of FIG. 5 is an example showing the relation of data and the determination method in the implementation method.
FIG. 1 is an example of a graph of the supply current to the equipment as a result of collecting data at a fixed cycle through A / D conversion from CT.
This current change is shown in FIG. 3 is determined based on the reference minimum current value and the reference maximum current value for each operation step of the operation step master shown in FIG. Operation of Step 2 It can be decomposed into 1 to 6 patterns.
FIG. 3, the range of the reference minimum current value and the maximum reference current value in each operation step is wide, and it is set so that it can be determined that the same operation step is within the same operation step even if the supply current differs depending on the production item.
As a result, FIG. The actual supply current and the actual operation time for each of the four operation steps can be known for each operation step, and the results of the operation step and the operation time can be obtained with the contents of claim 2.
Furthermore, in order to specify the item of claim 3, FIG. 4 data and FIG. The items can be identified by comparing the conditions of the six item masters.
The operation step master has a wide range of the reference minimum current value and the reference maximum current value in order to determine which operation step is in accordance with the change in the supply current. By narrowing the range of the reference minimum current value and the reference maximum current value of the item master of 6 items, the item is specified from the unique supply current difference for each item and the unique difference in time of each operation step.

産業上の利用の可能性Industrial applicability

本発明の産業上の利用の可能性については、設備に対する電源の供給電流のみで設備の運転・停止及び各動作ステップ毎の稼働時間と生産品目の特定を可能としている。
製造業での設備稼働率などの経営指標を安価で確実に得るための手段やコンサルティング等の問題解決の為の一時的に稼働監視を行う場合等に設備自体の改造を必要とせず実施でき設備の稼働監視技術に有用である。
With regard to the industrial applicability of the present invention, it is possible to specify the operation time and production items for each operation step, and the operation time and the operation of each facility step only by supplying power to the facility.
Equipment that can be implemented without the need for modification of the equipment itself, such as when temporarily monitoring operation for solving problems such as consulting and other means to obtain management indicators such as equipment utilization rates in the manufacturing industry at low cost It is useful for operation monitoring technology.

本発明の全体構成図Overall configuration diagram of the present invention 本発明のデータ判断例Data judgment example of the present invention 既存設備の供給電流パターン図Supply current pattern diagram of existing equipment 本発明のコンピュータ処理フローチャート図。The computer processing flowchart figure of this invention. 本発明のコンピュータ処理のデータ処理実施例図Data processing embodiment diagram of computer processing of the present invention

Claims (3)

工場の生産設備で設備の運転状態を監視する稼働監視システムにおいて、設備の運転状態の変移を、設備への電源供給電流を基に運転状態を判断する方法。  In an operation monitoring system that monitors the operating state of equipment at production facilities in a factory, a method of judging the operating state based on the power supply current to the equipment, based on changes in the operating state of the equipment. 請求項1記載の運転状態を判断する方法に加え、コンピュータを用いて、設備への電源供給電流の常時収集を行う手段と、電源供給電流の変化により、設備の運転状態の変移を自動的に判断する手段を有する稼働監視システム。  In addition to the method for judging the operation state according to claim 1, means for constantly collecting power supply current to the facility using a computer and a change in the operation state of the facility automatically by a change in the power supply current An operation monitoring system having means for determining. 請求項1記載の内容及び請求項2記載の内容に加え、コンピュータを用いて設備への電源供給電流のパターンより設備で生産されている品目を自動で特定する手段を有する稼働監視システム。  An operation monitoring system comprising means for automatically specifying an item produced in a facility from a pattern of power supply current to the facility using a computer in addition to the content of claim 1 and the content of claim 2.
JP2008335947A 2008-12-08 2008-12-08 Method and system for monitoring equipment operation Pending JP2010134888A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3644149A1 (en) 2018-10-23 2020-04-29 Kabushiki Kaisha Yaskawa Denki Control apparatus for industrial machine, control system for industrial machine, and method for controlling industrial machine
JP2021005195A (en) * 2019-06-26 2021-01-14 日本製鉄株式会社 Process assisting device, process assisting method and program
JP2022167202A (en) * 2021-04-22 2022-11-04 双葉電子工業株式会社 Operation determination device, setting method, and program

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3644149A1 (en) 2018-10-23 2020-04-29 Kabushiki Kaisha Yaskawa Denki Control apparatus for industrial machine, control system for industrial machine, and method for controlling industrial machine
US11526148B2 (en) 2018-10-23 2022-12-13 Kabushiki Kaisha Yaskawa Denki Control apparatus for industrial machine, control system for industrial machine, and method for controlling industrial machine
JP2021005195A (en) * 2019-06-26 2021-01-14 日本製鉄株式会社 Process assisting device, process assisting method and program
JP7303429B2 (en) 2019-06-26 2023-07-05 日本製鉄株式会社 Process support device, process support method and program
JP2022167202A (en) * 2021-04-22 2022-11-04 双葉電子工業株式会社 Operation determination device, setting method, and program
JP7456971B2 (en) 2021-04-22 2024-03-27 双葉電子工業株式会社 Operation judgment device, setting method, program

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