JPH1153037A - Driving output monitoring circuit - Google Patents

Driving output monitoring circuit

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Publication number
JPH1153037A
JPH1153037A JP20505897A JP20505897A JPH1153037A JP H1153037 A JPH1153037 A JP H1153037A JP 20505897 A JP20505897 A JP 20505897A JP 20505897 A JP20505897 A JP 20505897A JP H1153037 A JPH1153037 A JP H1153037A
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load
current
plurality
loads
means
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JP20505897A
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JP3627458B2 (en )
Inventor
Tetsuo Uchida
哲郎 内田
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Mitsumi Electric Co Ltd
ミツミ電機株式会社
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Abstract

PROBLEM TO BE SOLVED: To monitor loads for every load at the beginning of operation by switching a switching means before driving electric power is supplied to a load so that the electric power to be supplied to the load is electric power to be measured, and inspecting the state of the load according to a measured current and displaying the state of the load. SOLUTION: A control judgement part 150 once detecting the operation of an operation start switch 170 connects the movable contact (a) of the switching means 140 to the fixed contact (c) to connect a common power line L0 to a power circuit 130 for measurement. Then one of the loads 3-1 to 3-n is selected to turn on a transistor corresponding to the selection number among Q1 to Qn and turn off other two transistors, thereby supplying a current Im for measurement to the selected load from the power circuit 130 for measurement. Then the control judgement part 150 inputs a measurement current value Is detected by a current measuring instrument 120 and judges that the load is normal when the measured current Is is within a specific range, thereby displaying the decision result at a display part 160.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は駆動出力監視回路に係り、特に、動作開始時に負荷の状態を検出し、駆動出力の監視を行う駆動出力監視回路に関する。 The present invention relates to relates to a drive output monitoring circuit, in particular, to detect the state of the load at the start of operation, to drive the output monitoring circuit for monitoring the drive output.

【0002】 [0002]

【従来の技術】図4に従来の駆動出力監視回路の一例のブロック構成図を示す。 It illustrates an example block diagram of a conventional drive output monitoring circuit of the Related Art FIG. 従来の駆動出力監視回路1は、 Conventional drive output monitoring circuit 1,
駆動電源2と負荷3−1〜3−nとの間に接続されて、 Is connected between the driving power supply 2 Load 3-1 to 3-n,
動作開始時に負荷3−1〜3−nの抵抗を測定することにより負荷3−1〜3−nのそれぞれの状態を検出する。 Detecting the respective state of the load 3-1 to 3-n by measuring the resistance of the load 3-1 to 3-n at the start of operation.

【0003】駆動出力監視回路1は、負荷3−1〜3− [0003] The drive output monitoring circuit 1, load 3-1~3-
nから1つを選択する負荷選択回路11、負荷3−1〜 Load selection circuit 11 for selecting one from n, load 3-1
3−nの抵抗を測定する抵抗測定装置12、負荷3−1 3-n resistance measuring device 12 for measuring the resistance of the load 3-1
〜3−nへの接続を駆動電源2又は抵抗測定装置12に切り替えるスイッチ13、動作開始時に負荷選択回路1 Switch 13 for switching the connection to the to 3-n to the driving power source 2 or the resistance measuring device 12, the load selected at the start of operation circuits 1
1及びスイッチ13を制御して、抵抗測定装置12で測定された各負荷3−1〜3−nの測定抵抗に応じて各負荷3−1〜3−nに状態を判定する制御判断部14、制御判断部14での判断結果を表示する表示部15から構成される。 1 and controls the switch 13, the resistance measuring device determines the control determines the status to each load 3-1 to 3-n according to the measured resistance of each load 3-1 to 3-n measured at 12 14 , and a display unit 15 for displaying the determination result of the control determination unit 14.

【0004】負荷選択回路11は、NPNトランジスタQ1〜Qnから構成される。 [0004] load selection circuit 11 is composed of a NPN transistor Q1~Qn. NPNトランジスタQ1〜 NPN transistor Q1~
Qnは、コレクタが負荷3−1〜3−nの接地端子に接続され、エミッタが接地され、ベースが制御判断部14 Qn has a collector connected to the ground terminal of the load 3-1 to 3-n, emitter grounded, the base is the control determination unit 14
に接続される。 It is connected to. トランジスタQ1 〜Qnは制御判断部1 Transistor Q1 Qn control determination section 1
4からの制御信号に応じてスイッチングされ、抵抗測定装置12に接続される負荷を負荷3−1〜3−nから選択する。 Is switched in response to a control signal from the 4, selects the load connected to the resistance measuring device 12 from the load 3-1 to 3-n.

【0005】負荷3−1〜3−nの電源供給端子は、共通電源ラインL0 に接続される。 [0005] Power supply terminals of the load 3-1 to 3-n are connected to the common power line L0. 共通電源ラインL0 Common power supply line L0
は、切換手段13の可動接点aに接続される。 Is connected to the movable contact a of the switching means 13. 切換手段13の固定接点bは、駆動電源2に接続され、固定接点cは、抵抗測定装置12に接続される。 Fixed contact b of the switching means 13 is connected to the driving power supply 2, the fixed contact c is connected to the resistance measuring device 12. 切換手段13の可動接点aは、制御判断部14からの制御信号に応じて切り換えられる。 Movable contact a of the switching means 13 is switched in response to a control signal from the control determination unit 14.

【0006】抵抗測定装置12は、負荷3−1〜3−n [0006] The resistance measurement device 12, load 3-1~3-n
のそれぞれに微小電流を供給し、負荷3−1〜3−nそれぞれの抵抗値を検出する。 Of the minute current is supplied to each of detecting a load 3-1 to 3-n each of the resistance values. 抵抗測定装置12は、検出した負荷3−1〜3−nの抵抗値をディジタルデータに変換して制御判断部14に供給する。 Resistance measuring device 12 supplies the control determination unit 14 converts the resistance value of the detected load 3-1 to 3-n to the digital data. 制御判断部14 Control determining section 14
は、抵抗測定装置12から供給されるディジタルデータに応じて負荷3−1〜3−nそれぞれの短絡、切断、抵抗値異常などの状態を検出して、表示部15に表示する。 The load 3-1 to 3-n each shorted in accordance with digital data supplied from the resistance measuring device 12, the cutting, by detecting conditions such as resistance anomaly is displayed on the display unit 15.

【0007】図5に従来の駆動出力監視装置の一例の制御判断部のフローチャートを示す。 [0007] An example flow chart of a control determination unit of the conventional driving system for monitoring the power in Fig. 制御判断部14は、 Control determination unit 14,
動作開始時に、まず、切換手段13の可動接点aを固定接点cに接続し、共通電源ラインL0 に抵抗測定装置1 At the start of operation, first, connect the movable contact a of the switching means 13 to the fixed contact c, the resistance measuring device to a common power supply line L0 1
2を接続する(ステップS3−1,S3−2)。 2 connecting (step S3-1, S3-2). 次に、 next,
制御判断部14は、負荷3−1〜3−nを選択する負荷選択番号Nを「1」にリセットする(ステップS3− Control determination unit 14 resets the load selection number N for selecting the load 3-1 to 3-n to "1" (step S3-
3)。 3). 次に、制御判断部14は、負荷選択回路11のステップS3−3で選択された選択番号Nに対応するトランジスタQN をオンし、他のトランジスタをオフする(ステップS3−4)。 Next, the control determination unit 14 turns on the transistor QN corresponding to the selection number N that is selected in step S3-3 of the load selection circuit 11 and turns off the other transistor (step S3-4). ステップ3−4により、負荷3 By the step 3-4, load 3
−Nに抵抗測定装置12から測定用微小電流Im が供給される。 For measurement minute current Im supplied from the resistance measuring device 12 -N.

【0008】制御判断部14は、このとき、抵抗測定装置12で検出された測定抵抗値Rsを入力し、内部に予め設定された上限値R1及び下限値R2と比較する(ステップS3−6,S3−7)。 [0008] The control judgment unit 14, at this time, enter the measured resistance value Rs detected by the resistance measuring device 12 is compared with the upper limit value R1 and the lower limit value R2 set in advance in the internal (step S3-6, S3-7). ステップS3−6で、測定抵抗値Rs が下限抵抗値R1 より小さいと判断された場合には、負荷3−Nは短絡していると判断する(ステップS3−8)。 In step S3-6, when the measured resistance value Rs is determined to lower smaller resistance value R1, the load 3-N is determined to be short-circuited (step S3-8).

【0009】また、ステップS3−7で、測定抵抗値R Further, in step S3-7, the measured resistance value R
s が上限抵抗値R2より大きいと判断された場合には、 When s is determined greater than the upper limit resistance value R2 is
負荷3−Nは切断していると判断する(ステップS3− Load 3-N is determined to be disconnected (step S3-
9)。 9). さらに、ステップS3−6,S3−7で、測定抵抗値Rs が下限抵抗値R1と上限抵抗値R2との間にあると判断された場合には、次に、測定抵抗値Rs が所定の範囲(R0 −ΔR3 )<Rs <(R0 +ΔR3 )内にあるか否かが判断される(ステップS3−10)。 Further, step S3-6, at S3-7, if the measured resistance value Rs is determined to be between the lower resistance value R1 and the upper limit resistance value R2 may then range measured resistance value Rs is given (R0 -ΔR3) <whether the Rs <(R0 + ΔR3) in is determined (step S3-10).

【0010】ステップS3−10で、測定抵抗値Rs が所定の範囲(R0 −ΔR3 )<Rs<(R0 +ΔR3 ) [0010] In step S3-10, the range measured resistance value Rs is given (R0 -ΔR3) <Rs <(R0 + ΔR3)
内にあれば、負荷Nは正常であると判断され(ステップS3−11)、測定抵抗値Rs が所定の範囲(R0 −Δ If within the load N is determined to be normal (step S3-11), the range measured resistance value Rs is given (R0 - [delta
R3 )<Rs <(R0 +ΔR3 )内になければ、負荷N R3) <not in Rs <(R0 + ΔR3) within it, the load N
は抵抗値に異常があると判断される(ステップS3−1 It is determined that there is the abnormality in the resistance value (step S3-1
2)。 2).

【0011】次に、上記のステップS3−6〜S3−1 [0011] Next, the above-mentioned step S3-6~S3-1
2での判定結果を表示部15に表示する(ステップS3 The determination result of 2 on the display unit 15 (step S3
−13)。 -13). このとき、表示部15には、負荷3−1〜3 At this time, the display unit 15, the load 31 to 3
−nを識別するための負荷番号N及び負荷番号Nに対応する判定結果が表示され、どの負荷にどんな異常があるかが容易にわかるような表示が行われる。 Corresponding to the load number N and the load number N for identifying -n determination results are displayed, which loads to any abnormal if there is such readily apparent display is performed. 上記ステップS3−4〜S3−13が負荷の数n回繰り返し行われ、 Step S3-4~S3-13 is repeated number n of times of load,
負荷3−1〜3−Nそれぞれの状態が検出される(ステップS3−14,S3−15)。 Load 3-1 to 3-N each condition is detected (step S3-14, S3-15).

【0012】以上により、動作開始時の検査処理が終了する。 By [0012] As described above, the inspection process at the start of operation is finished. 負荷3−1〜3−nの検査後、全ての負荷3−1 After inspection of the load 3-1 to 3-n, all loads 3-1
〜3−nが正常であれば、切換手段13の可動接点aを固定接点bに接続し、負荷3−1〜3−nに駆動電源2 If to 3-n is normal, and connect the movable contact a of the switching means 13 to the fixed contact b, load 3-1 to 3-n to the driving power supply 2
を接続する(ステップS3−16,S3−17)。 Connecting (step S3-16, S3-17). なお、検査後、切換手段13の可動接点aを固定接点bに接続され、負荷3−1〜3−nに駆動電源2を接続されると、抵抗測定装置12は負荷3−1〜3−nから切断され、負荷3−1〜3−nの抵抗は測定できなくなる。 Incidentally, after the inspection, is connected to the movable contact a of the switching means 13 to the fixed contact b, and is connected to the driving power source 2 to the load 3-1 to 3-n, the resistance measuring device 12 loads 3-1~3- is disconnected from n, the resistance of the load 3-1 to 3-n can no longer be measured.

【0013】 [0013]

【発明が解決しようとする課題】しかるに、従来の駆動出力監視回路1では、駆動電源2と負荷3−1〜3−n [SUMMARY OF THE INVENTION] However, the conventional driving output monitoring circuit 1, the driving power supply 2 and the load 3-1 to 3-n
とが接続されている状態では、抵抗測定装置12が負荷3−1〜3−nから切断されるため、動作後は負荷3− In a state where bets are connected, the resistance measuring device 12 is disconnected from the load 3-1 to 3-n, after the operation load 3-
1〜3−nの監視が行えず、動作後の異常は検出できない等の問題点があった。 Can not be carried out monitoring of 1 to 3-n, there is a problem such that abnormality can not be detected after operation.

【0014】本発明は上記の点に鑑みてなされたもので、動作開始時には負荷毎に、また、動作後でも常時負荷の監視が可能となる駆動出力監視回路を提供することを目的とする。 [0014] The present invention has been made in view of the above, for each load at the start of operation, also, an object of the invention to provide a drive output monitoring circuit that enables monitoring of constantly load even after operation.

【0015】 [0015]

【課題を解決するための手段】本発明の請求項1は、駆動電源により駆動される負荷の状態を監視する駆動出力監視回路において、前記駆動電源と前記負荷との間に接続され、前記負荷に供給される電流を測定する電流測定手段と、前記負荷に前記電流測定手段を介して測定電流を供給する測定電源と、前記負荷に前記電流測定手段を介して供給する電源を前記駆動電源と前記測定電源とのいずれか一方から選択する切換手段と、前記駆動電源を前記負荷に供給する前に、前記切換手段を前記負荷に供給する電源が前記測定電源となるように切り換え、前記電流測定手段により測定される電流に応じて前記負荷の状態を検査し、前記負荷の状態を表示するとともに、前記負荷の状態を検査した後、前記切換手段を前記負荷に供給する電源が前 Claims of the present invention, in order to solve the problems] 1, in the driving output monitoring circuit for monitoring the state of the load driven by the drive power source is connected between the driving power source and the load, the load current measuring means for measuring the current supplied to the measurement power source for supplying a measuring current through the current measuring means to the load, and the driving power source the power supply through the current measuring means to said load and switching means for selecting from one of said measuring power, before supplying the driving power to the load, switching the switching means so that the power supplied to the load is the measurement power supply, said current measurement Check the state of the load in accordance with the current measured by the means, the and displays the status of the load, after checking the state of the load, the power supply for supplying the switching means to the load before 駆動電源となるように切り換え、前記負荷を駆動させ、前記電流測定手段により測定される電流を監視することにより前記負荷の異常を常時監視する制御判断手段を有することを特徴とする。 To switch to the drive power source, wherein to drive the load, characterized by having a control determining means for monitoring an abnormality of the load at all times by monitoring the current measured by said current measuring means.

【0016】請求項1によれば、駆動電源を負荷に供給する前に、所定の測定電源により負荷の状態を検査し、 According to claim 1, before supplying a driving power to a load, check the state of the load by a predetermined measuring power supply,
負荷の状態を表示するので、駆動前に負荷の異常を認識できる。 Since displaying the state of the load, it can recognize the abnormality of the load prior to driving. また、電流測定手段は負荷と電源と間に直列に接続されているので、駆動電源により負荷が駆動された後にも負荷に供給される電流を測定できるため、負荷駆動後も電流測定手段により負荷に供給される電流を測定することにより、負荷の状態監視できる。 Further, since the current measuring means are connected in series between the load and the power source and, since it is possible to measure the current load by the drive power is supplied to the load even after being driven, the load by even current measuring means after the load driving by measuring the current supplied to the can monitor the status of the load.

【0017】請求項2は、駆動電源により駆動される複数の負荷の状態を監視する駆動出力監視回路において、 [0017] Claim 2 is, in the drive output monitoring circuit monitoring the status of a plurality of load driven by the drive power source,
前記駆動電源と前記複数の負荷との間に接続され、前記複数の負荷に供給される電流を測定する電流測定手段と、前記複数の負荷から所望の負荷を選択的に前記電流測定手段に接続する負荷選択手段と、前記複数の負荷に前記電流測定手段を介して測定電流を供給する測定電源回路と、前記複数の負荷に前記電流測定手段を介して供給する電源を前記駆動電源と前記測定電源とのいずれか一方から選択する切換手段と、前記駆動電源を前記負荷に供給する前に、前記切換手段を前記負荷に供給する電源が前記測定電源となるように切り換え、かつ、前記負荷選択手段により前記複数の負荷から1つの負荷を順次選択し、前記電流測定手段により選択された各負荷の供給される電流を測定することにより前記複数の負荷それぞれの状態を検査し Connected between said plurality of loads to the driving power source, connected to the current measuring means for measuring the current supplied to the plurality of loads, to selectively said current measuring means a desired load from said plurality of loads a load selection means for a measuring power source circuit for supplying a measuring current through the current measuring means to the plurality of loads, the measured power supply and the driving power source through the current measuring means to the plurality of loads and switching means for selecting from either the power source, before supplying the driving power to the load, switching the switching means so that the power supplied to the load is the measurement power supply and the load selection one load from said plurality of loads are sequentially selected by means checks said plurality of loads each state by measuring the current supplied to the selected load by the current measuring means 前記複数の負荷の状態をそれぞれ表示するとともに、前記複数の負荷の状態を検査した後、前記切換手段を前記負荷に供給する電源が前記駆動電源となるように切り換え、前記複数の負荷を駆動させ、前記電流測定手段により測定される電流を監視することにより前記複数の負荷の異常を常時監視する制御判断手段を有することを特徴とする。 And displays the plurality of load conditions, respectively, after checking the status of the plurality of load, switching the switching means so that the power supplied to the load is the driving power source to drive the plurality of loads , characterized by having a control determining means for constantly monitoring an abnormality of the plurality of load by monitoring the current measured by said current measuring means.

【0018】請求項2によれば、駆動電源を複数の負荷に供給する前に、所定の測定電源により複数の負荷の状態を順次選択、検査し、複数の負荷それぞれの状態を表示するので、駆動前に複数の負荷それぞれの異常を認識できる。 According to claim 2, before supplying a driving power to a plurality of loads, sequentially selects the state of the plurality of loads by a predetermined measuring power supply, inspect, since displaying a plurality of load conditions, It can recognize multiple loads each abnormality before driving. また、電流測定手段は負荷と電源と間に直列に接続されているので、駆動電源により負荷が駆動された後にも負荷に供給される電流を測定できるため、負荷駆動後も電流測定手段により負荷に供給される電流を測定することにより、負荷の状態監視できる。 Further, since the current measuring means are connected in series between the load and the power source and, since it is possible to measure the current load by the drive power is supplied to the load even after being driven, the load by even current measuring means after the load driving by measuring the current supplied to the can monitor the status of the load.

【0019】請求項3は、前記制御判断手段が、前記駆動電源を前記複数の負荷に供給する際に、前記駆動電源を前記負荷に供給する前の前記複数の負荷それぞれに対する検査で異常が検出された負荷に応じて前記複数の負荷への前記駆動電源の供給を制御することを特徴とする。 [0019] Claim 3, wherein said control determining means, when supplying the driving power to the plurality of loads, the abnormality detection by testing for each of the plurality of loads before supplying the driving power to the load and controlling the supply of the drive power to the plurality of loads in accordance with the load. 請求項3によれば、駆動電源を複数の負荷に供給する際に、駆動電源を負荷に供給する前の複数の負荷それぞれに対する検査で異常が検出された負荷に応じて複数の負荷への駆動電源の供給を制御することにより、正常な動作が可能な動作を停止させることなく行わせることができる。 According to claim 3, when supplying a driving power to a plurality of loads, abnormality in accordance with the detected load drive to multiple load test for each of a plurality of load before supplying the driving power to a load by controlling the supply of power can be performed without stopping the capable normal operation operation.

【0020】 [0020]

【発明の実施の形態】図1に本発明の駆動出力監視回路の一実施例のブロック構成図を示す。 It shows a block diagram of an embodiment of the driving output monitoring circuit of the present invention DETAILED DESCRIPTION OF THE INVENTION Figure 1. 本実施例の駆動出力監視回路100は、負荷3−1〜3−nの接続を制御する負荷選択回路110、負荷3−1〜3−nに供給される電流を測定する電流測定装置120、動作開始時に負荷3−1〜3−nに測定電流を供給する測定用電源1 Driving output monitoring circuit 100 of this embodiment, the load 3-1 to 3-n load selection circuit 110 for controlling the connection of the current measuring device 120 for measuring the current supplied to the load 3-1 to 3-n, measurements for supplying a measured current to a load 3-1 to 3-n at the start of operation power supply 1
30、負荷3−1〜3−nの電源を駆動電源2又は測定電源130に切り換える切換手段140、後述するように動作開始時に負荷選択回路110及び切換手段140 30, load 3-1 to 3-n switching means 140 for switching the power to the driving power source 2 or the measurement power supply 130 of the load at the start operation as described later selection circuit 110 and switching means 140
を制御し、電流測定回路110で検出された各負荷3− Controls, each detected by the current measuring circuit 110 loads 3-
1〜3−nに流れる電流に応じて各負荷3−1〜3−n Each load 3-1 to 3-n according to the current flowing in the 1 to 3-n
の状態を判断するとともに、動作後は負荷3−1〜3− With state determines the after operation load 3-1~3-
nに流れる電流を電流測定回路110により常時検出して、負荷3−1〜3−nの状態を判断する制御判断部1 Is detected at all times by the current measuring circuit 110 the current flowing through the n, the control determination unit 1 to determine the state of the load 3-1 to 3-n
50、制御判断部150での判断結果を表示する表示部160、動作開始を指示する動作開始スイッチ170から構成される。 50, a display unit 160 for displaying the result of determination by the control determination unit 150, and a operation start switch 170 for instructing the start of operation.

【0021】負荷選択回路110は、負荷3−1〜3− [0021] The load selection circuit 110, load 3-1~3-
nに対応して設けられたNPNトランジスタQ1〜Qn NPN transistor Q1~Qn provided corresponding to n
から構成される。 It consists of. トランジスタQ1は、コレクタが負荷3−1の接地側端子に接続され、エミッタが接地され、 Transistor Q1 has a collector connected to the ground terminal of the load 3-1, the emitter is grounded,
ベースが制御判断部150に接続される。 Base connected to the control determination unit 150. 同様にトランジスタQ2〜Qnは、コレクタが負荷3−2〜3−nの接地側端子に接続され、エミッタが接地され、ベースが制御判断部150に接続される。 Similarly transistor Q2~Qn has a collector connected to a ground side terminal of the load 3-2 to 3-n, emitter grounded, and a base connected to the control determination unit 150.

【0022】トランジスタQ1〜Qnは、制御判断部1 [0022] The transistor Q1~Qn is, control determining section 1
50によりそれぞれのベース電位が制御され、スイッチングされる。 Each base potential is controlled by 50, it is switched. トランジスタQ1〜Qnが選択的にオンされることにより、負荷3−1〜3−nの接地側端子が接地され、負荷3−1〜3−nに選択的に測定電流が供給されることになる。 When the transistor Q1~Qn is selectively turned on, the ground-side terminal of the load 3-1 to 3-n are grounded, that is selectively measured current to a load 3-1 to 3-n are supplied Become. 電流測定装置120は、一端に負荷3−1〜3−nの電源端子が共通に接続された共通電源ラインL0 に直列に接続され、共通電源ラインL0 に流れる電流を測定し、ディジタルデータに変換して、制御判断部150に供給する。 Current measuring device 120 is connected in series to a common power line L0 power terminal of the load 3-1 to 3-n are connected in common to one end, the measurement of the current flowing through the common power supply line L0, converted into digital data to, to the control determination unit 150.

【0023】共通電源ラインL0 の他端は切換手段14 [0023] The other end of the common power supply line L0 is switching means 14
0の可動接点aに接続される。 0 is connected to the movable contact a of. 切換手段140は、リレーから構成され、可動接点aが共通電源ラインL0 に接続され、固定接点bが駆動電源2に接続され、固定接点cが測定電源回路130に接続される。 Switching means 140 is composed of a relay, the movable contact a is connected to the common power line L0, the fixed contact b is connected to the driving power supply 2, the fixed contact c is connected to the measurement power supply circuit 130. 切換手段140 Switching means 140
は、制御判断部150から供給される切換信号に応じて可動接点aが固定接点b又はcに接続され、共通電源ラインL0 に供給される電流の供給元を切り換える。 The movable contact a in response to the switching signal supplied from the control determination unit 150 is connected to the fixed contact b or c, switching the source of the current supplied to the common power line L0. 測定電源回路130は、定電圧源130a及び抵抗R0 から構成され、切換手段140の可動接点aが固定接点cに接続されたとき、共通電源ラインL0 に測定用電流Im Measuring the power circuit 130 is composed of a constant voltage source 130a and the resistor R0, when the movable contact a of the switching means 140 is connected to the fixed contact c, the measuring current Im to the common power supply line L0
を供給する。 And supplies.

【0024】また、駆動電源2は、正極側が切換手段1 Further, the driving power supply 2, the positive electrode side switching means 1
40の固定接点bに接続され、負極側が接続され、切換手段140の可動接点aが固定接点bに接続されたとき、共通電源ラインL0 に負荷3−1〜3−nを駆動するための駆動電流ID を供給する。 Is connected to the fixed contact b of 40, the negative electrode side is connected, when the movable contact a of the switching means 140 is connected to the fixed contact b, a drive for driving a load 3-1 to 3-n to the common power line L0 supplying a current ID. 制御判断部150 Control determining section 150
は、動作開始スイッチ170の操作を検出することにより動作開始を検出し、切換手段140及び負荷選択回路110を制御して、各負荷3−1〜3−nの状態を検査し、異常の有無を検出する。 Detects the operation start by detecting an operation of the operation start switch 170, and controls the switching means 140 and the load selection circuit 110 checks the status of each load 3-1 to 3-n, abnormal presence of to detect.

【0025】図2に本発明の駆動出力監視回路の一実施例の制御判断部のフローチャートを示す。 [0025] illustrates a flow chart of a control determining section of an embodiment of the driving output monitoring circuit of the present invention in FIG. 制御判断部1 Control determining section 1
50は、動作開始スイッチ170の操作を検出すると、 50 detects the operation of the operation start switch 170,
まず、切換手段140の可動接点aを固定接点cに接続し、共通電源ラインL0 を測定用電源回路130に接続する(ステップS1−1,S1−2)。 First, connect the movable contact a of the switching means 140 to the fixed contact c, connects the common power line L0 to the measurement power supply circuit 130 (step S1-1, S1-2).

【0026】次に、制御判断部150は、負荷3−1〜 [0026] Next, the control determination unit 150, load 3-1
3−nを選択する負荷選択番号Nを「1」にリセットする(ステップS1−3)。 The load selection number N for selecting the 3-n is reset to "1" (step S1-3). 次に、制御判断部150は、 Next, the control determination unit 150,
負荷選択回路110のステップS1−3で選択された選択番号Nに対応するトランジスタQN をオンし、他のトランジスタをオフする(ステップS1−4)。 Turning the transistor QN corresponding to the selection number N that is selected in step S1-3 of the load selection circuit 110, it turns off the other transistor (step S1-4). ステップ1−4により、負荷3−Nに測定用電源回路130から測定用電流Im が供給される。 In step 1-4, the measurement current Im is supplied from the measurement power supply circuit 130 to the load 3-N.

【0027】制御判断部150は、このとき、電流測定装置120で検出され、ディジタルデータに変換された測定電流値Is を入力し、内部に予め設定された上限値L1及び下限値L2と比較する(ステップS1−5,S The control determination unit 150, this time, is detected by the current measuring device 120, enter the measurement current value Is converted into the digital data is compared with the upper limit L1 and the lower limit value L2 which is previously set therein (step S1-5, S
1−6,S1−7)。 1-6, S1-7). ステップS1−6で、測定電流値Is が上限値L1 より大きいと判断された場合には、負荷3−Nに所定値以上の電流が流れているので、負荷3 In step S1-6, when the measured current value Is is determined to be larger than the upper limit L1, since a predetermined value or more current is flowing in the load 3-N, load 3
−Nが短絡していると判断する(ステップS1−8)。 It determines that -N is short-circuited (step S1-8).

【0028】また、ステップS1−7で、測定電流値I [0028] In addition, in step S1-7, the measured current value I
s が下限値L2より小さいと判断された場合には、負荷3−Nに所定値以下の電流しか流れないので、負荷3− When s is determined to less than the lower limit L2, so only flow a predetermined value or less current to the load 3-N, load 3-
Nが切断していると判断する(ステップS1−9)。 N is determined to be disconnected (step S1-9). さらに、ステップS1−6,S1−7で、測定電流値Is Further, step S1-6, at S1-7, measurement current value Is
が上限値L1と下限値L2との間にあると判断された場合には、次に、測定電流値Is が所定の範囲(L0 −Δ There if it is determined to be between the upper limit L1 and the lower limit value L2 is then measured current value Is is in a predetermined range (L0 - [delta
L3 )<Is <(L0 +ΔL3 )内にあるか否かが判断される(ステップS1−10)。 L3) <Is <(L0 + ΔL3) whether within or not (Step S1-10).

【0029】ステップS1−10で、測定電流値Is が所定の範囲(L0 −ΔL3 )<Is<(L0 +ΔL3 ) [0029] In step S1-10, the measurement current value Is is in a predetermined range (L0 -ΔL3) <Is <(L0 + ΔL3)
内にあれば、負荷Nは正常であると判断され(ステップS1−11)、測定電流値Is が所定の範囲(L0 −Δ If within the load N is determined to be normal (step S1-11), the measurement current value Is is in a predetermined range (L0 - [delta
L3 )<Is <(L0 +ΔL3 )内になければ、負荷N L3) <If the Is <the (L0 + ΔL3), the load N
は抵抗値に異常があると判断される(ステップS1−1 It is determined that there is the abnormality in the resistance value (step S1-1
2)。 2).

【0030】次に、上記のステップS1−6〜S1−1 [0030] Next, the above-mentioned step S1-6~S1-1
2での判定結果を表示部160に表示する(ステップS The determination result of 2 on the display unit 160 (step S
1−13)。 1-13). このとき、表示部160には、負荷3−1 At this time, the display unit 160, load 3-1
〜3−nを識別するための負荷番号N及び負荷番号Nに対応する判定結果が表示され、どの負荷にどんな異常があるかが容易にわかるような表示が行われる。 Judgment results corresponding to the load number N and the load number N for identifying to 3-n are displayed, which loads to any abnormal if there is such readily apparent display is performed. 上記ステップS1−4〜S1−13が負荷の数n回繰り返し行われ、負荷3−1〜3−Nそれぞれの状態が検出される(ステップS1−14,S1−15)。 Step S1-4~S1-13 is repeated number n of times of load, load 3-1 to 3-N each condition is detected (step S1-14, S1-15).

【0031】以上により、動作開始時の検査処理が終了する。 By the [0031] above, the inspection process at the time of start of operation is finished. 次に、制御判断部150は、負荷選択回路110 Next, the control determination unit 150, the load selection circuit 110
のトランジスタQ1〜QNのうち、上記ステップS1− Of the transistors Q1 through QN, step S1-
4〜S1−15で異常判定された負荷及びそれに関連する負荷に対応するトランジスタをオンにしない、すなわち、ディセーブルし、正常判定され、かつ、異常判定された負荷と関連して動作しない負荷に対応するトランジスタをオンにできる設定を行った後、切換手段140の可動接点aを固定接点bに接続し、動作可能な負荷に駆動電源2を印加して、動作を行わせる(ステップS1− Do not turn the abnormality determination has been loaded and the corresponding transistors to the load associated therewith at 4~S1-15, i.e., disables, the successfully determined, and do not operate in conjunction with the abnormality determination has been Load Load after the settings that the corresponding transistor on to connect the movable contact a of the switching means 140 to the fixed contact b, to apply a driving power source 2 in an operable load, to perform the operation (step S1-
16,S1−17)。 16, S1-17).

【0032】制御判断部150は、動作後、動作停止操作が行われるまで、電流測定装置120により測定される測定電流Is 'を監視して常時監視処理を行う(ステップS1−18,S1−19)。 The control determination unit 150, after the operation, until the operation stop operation is performed, performs continuous monitoring process to monitor the measured current Is' measured by the current measuring device 120 (step S1-18, S1-19 ). ここで、ステップS1 Here, steps S1
−18の動作後の監視処理について図面とともに説明する。 It will be described in conjunction with the accompanying drawings monitoring process after operation of -18. 図3に本発明の一実施例の制御判断部の監視処理のフローチャートを示す。 It shows a flowchart of a monitoring process control determination section of an embodiment of the present invention in FIG.

【0033】監視処理では、まず、電流測定装置120 [0033] In the monitoring process, first, the current measuring device 120
により測定される負荷3−1〜3−Nのうち動作中の負荷に供給される電流Is 'を入力する(ステップS2− Inputting a current Is' supplied to the load during operation of the measured load 3-1 to 3-N (step S2-
1)。 1). 制御判断部150は、入力された測定電流値Is Control determination unit 150, the input measurement current value Is
'を内部に予め設定された上限値LS11 及び下限値LS 'Advance therein set upper limit value LS11 and the lower limit value LS
12 と比較する(ステップS2−2)。 Compared to 12 (step S2-2).

【0034】ステップS2−2で、測定電流値Is 'が所定の範囲LS11 <Is '<LS12内にあれば、負荷N [0034] In step S2-2, if measured current Is 'is given range LS11 <Is' in <LS12, load N
は正常であると判断され、ステップS2−1に戻って、 Is determined is normal, the process returns to step S2-1,
動作が続行される。 The operation is continued. また、測定電流値Is 'が所定の範囲LS11 <Is '<LS12 内になければ、動作中の負荷のいずれかに抵抗値に異常があると判断される(ステップS2−3)。 The measurement current value Is 'is given range LS11 <Is' not within <LS12, it is determined that there is an abnormality in the resistance to any load in operation (step S2-3).

【0035】ステップS2−2で動作中の負荷に異常が生じた場合には、負荷選択回路110のトランジスタQ [0035] When an abnormality occurs in the load during operation at step S2-2, the transistor Q of the load selection circuit 110
1〜Qnを全てオフして、負荷3−1〜3−nへの電流の供給を停止して、判定結果を表示部160に表示させる(ステップS2−4,S2−5)。 And all off the 1~Qn, by stopping the supply of current to the load 3-1 to 3-n, and displays the determination result on the display unit 160 (step S2-4, S2-5). 以上本実施例によれば、動作開始時には負荷選択回路110により負荷3 Above, according to this embodiment, the load by the load selection circuit 110 at the start of operation 3
−1〜3−nを順次選択して、負荷3−1〜3−nに共通に接続された共通電源ラインL0 に直列に接続された電流測定装置120により各負荷に供給される電流を検出し、各負荷の短絡、切断、抵抗値異常等の状態を検出し、警告を発することができる。 -1~3-n sequentially selects, detects a current supplied to each load by the current measuring device 120 to the common power supply line L0 connected in common to a load 3-1 to 3-n are connected in series and, shorting of the load, cut, to detect the state of the resistance value abnormality, it is possible to issue a warning.

【0036】また、駆動電源2を負荷3−1〜3−nに接続した後でも、電流測定装置120は、共通電源ラインL0 に直列に接続されているので、駆動電源2から動作中の負荷に供給される電流を電流測定装置120により測定できる。 Further, after connecting the driving power source 2 to the load 3-1 to 3-n is also the current measuring device 120, because it is connected in series to a common power line L0, load during operation from the driving power supply 2 the current supplied can be measured by the current measuring device 120. このため、動作後の負荷の異常を検出できる。 Therefore, it is possible to detect the abnormality of the load after the operation.

【0037】 [0037]

【発明の効果】上述の如く、本発明の請求項1によれば、駆動電源を負荷に供給する前に、所定の測定電源により負荷の状態を検査し、負荷の状態を表示するので、 As described above, according to the present invention, according to claim 1 of the present invention, before supplying the driving power to a load, check the state of the load by a predetermined measuring power supply, so to display the state of the load,
駆動前に負荷の異常を認識でき、また、電流測定手段は負荷と電源と間に直列に接続されているので、駆動電源により負荷が駆動された後にも負荷に供給される電流を測定できるため、負荷駆動後も電流測定手段により負荷に供給される電流を測定することにより、負荷の状態監視できる等の特長を有する。 Before driving to recognize the abnormality of the load, also, since the current measuring means are connected in series between the load and the power source and, since it is possible to measure the current load by the drive power is supplied to the load even after being driven , by measuring the current supplied to the load by even current measuring means after the load drive has a feature such as a can monitor the status of the load.

【0038】請求項2によれば、駆動電源を複数の負荷に供給する前に、所定の測定電源により複数の負荷の状態を順次選択、検査し、複数の負荷それぞれの状態を表示するので、駆動前に複数の負荷それぞれの異常を認識できる。 [0038] According to claim 2, before supplying a driving power to a plurality of loads, sequentially selects the state of the plurality of loads by a predetermined measuring power supply, inspect, since displaying a plurality of load conditions, It can recognize multiple loads each abnormality before driving. また、電流測定手段は負荷と電源と間に直列に接続されているので、駆動電源により負荷が駆動された後にも負荷に供給される電流を測定できるため、負荷駆動後も電流測定手段により負荷に供給される電流を測定することにより、負荷の状態監視できる等の特長を有する。 Further, since the current measuring means are connected in series between the load and the power source and, since it is possible to measure the current load by the drive power is supplied to the load even after being driven, the load by even current measuring means after the load driving by measuring the current supplied to have a feature, such as it can monitor the status of the load.

【0039】請求項3によれば、駆動電源を複数の負荷に供給する際に、駆動電源を負荷に供給する前の複数の負荷それぞれに対する検査で異常が検出された負荷に応じて複数の負荷への駆動電源の供給を制御することにより、正常な動作が可能な動作を停止させることなく行わせることができる等の特長を有する。 [0039] According to claim 3, when supplying a driving power to the plurality of loads, the plurality of loads in accordance with the abnormality is detected load test for each of a plurality of load before supplying the driving power to a load by controlling the supply of driving power to have the characteristics of such it can be done without stopping the capable normal operation operation.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の駆動出力監視回路の一実施例のブロック構成図である。 1 is a block diagram of an embodiment of the driving output monitoring circuit of the present invention.

【図2】本発明の駆動出力監視回路の一実施例の制御判断部の動作フローチャートである。 2 is an operation flowchart of the control determination unit of one embodiment of a drive output monitoring circuit of the present invention.

【図3】本発明の駆動出力監視回路の一実施例の制御判断部の監視処理のフローチャートである。 It is a flowchart of a monitoring process control determination section of one embodiment of a drive output monitoring circuit of the present invention; FIG.

【図4】従来の駆動出力監視回路の一例のブロック構成図である。 4 is a block diagram of an example of a conventional drive output monitoring circuit.

【図5】従来の駆動出力監視回路の一例の制御判断部の動作フローチャートである。 5 is an operation flowchart of the control determination unit of an example of a conventional drive output monitoring circuit.

【符号の説明】 DESCRIPTION OF SYMBOLS

2 駆動電源 3−1〜3−n 負荷 100 駆動出力監視回路 110 負荷選択回路 120 スイッチ 130 測定用電源回路 140 電流測定回路 150 制御判断部 160 表示部 Q1〜Qn NPNトランジスタ 2 drive power 3-1 to 3-n load 100 drive output monitoring circuit 110 load selection circuit 120 switches 130 measuring power supply circuit 140 current measuring circuit 150 control determining unit 160 display unit Q1 to Qn NPN transistor

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 駆動電源により駆動される負荷の状態を監視する駆動出力監視回路において、 前記駆動電源と前記負荷との間に接続され、前記負荷に供給される電流を測定する電流測定手段と、 前記負荷に前記電流測定手段を介して測定電流を供給する測定電源と、 前記負荷に前記電流測定手段を介して供給する電源を前記駆動電源と前記測定電源とのいずれか一方から選択する切換手段と、 前記駆動電源を前記負荷に供給する前に、前記切換手段を前記負荷に供給する電源が前記測定電源となるように切り換え、前記電流測定手段により測定される電流に応じて前記負荷の状態を検査し、前記負荷の状態を表示するとともに、前記負荷の状態を検査した後、前記切換手段を前記負荷に供給する電源が前記駆動電源となるように切り換え、 1. A drive output monitoring circuit for monitoring the state of the load driven by the drive power source is connected between the driving power source and the load, and current measuring means for measuring the current supplied to said load , switching to select a measuring power source for supplying a measuring current through the current measuring means to the load, the power supply through the current measuring means to the load from one of said measuring power source and the driving power source and means, before supplying the driving power to the load, switching the switching means so that the power supplied to the load is the measurement power supply, the load in accordance with the current measured by said current measuring means Verify the status, and displays the status of the load, after checking the status of the load, switching the switching means so that the power supplied to the load is the driving power source, 記負荷を駆動させ、前記電流測定手段により測定される電流を監視することにより前記負荷の異常を常時監視する制御判断手段を有することを特徴とする駆動出力監視回路。 Serial drives the load, the drive output monitoring circuit, characterized by comprising a control determining means for monitoring an abnormality of the load at all times by monitoring the current measured by said current measuring means.
  2. 【請求項2】 駆動電源により駆動される複数の負荷の状態を監視する駆動出力監視回路において、 前記駆動電源と前記複数の負荷との間に接続され、前記複数の負荷に供給される電流を測定する電流測定手段と、 前記複数の負荷から所望の負荷を選択的に前記電流測定手段に接続する負荷選択手段と、 前記複数の負荷に前記電流測定手段を介して測定電流を供給する測定電源回路と、 前記複数の負荷に前記電流測定手段を介して供給する電源を前記駆動電源と前記測定電源とのいずれか一方から選択する切換手段と、 前記駆動電源を前記負荷に供給する前に、前記切換手段を前記負荷に供給する電源が前記測定電源となるように切り換え、かつ、前記負荷選択手段により前記複数の負荷から1つの負荷を順次選択し、前記電流測定手段に 2. A drive output monitoring circuit monitoring the status of a plurality of loads driven by a driving power source, connected between said plurality of loads to the driving power source, the current supplied to the plurality of loads current measuring means for measuring a load selection means selectively connected to said current measuring means a desired load from said plurality of loads, measuring power supplies measurement current via the current measuring means to the plurality of loads a switching means for selecting circuits and the power supply through the current measuring means to the plurality of load from one of said measuring power source and the driving power source, before supplying the driving power to the load, switching the switching means so that the power supplied to the load is the measurement power supply, and one of the load from the plurality of loads are sequentially selected by the load selection unit, the current measuring means り選択された各負荷の供給される電流を測定することにより前記複数の負荷それぞれの状態を検査し、前記複数の負荷の状態をそれぞれ表示するとともに、前記複数の負荷の状態を検査した後、前記切換手段を前記負荷に供給する電源が前記駆動電源となるように切り換え、前記複数の負荷を駆動させ、前記電流測定手段により測定される電流を監視することにより前記複数の負荷の異常を常時監視する制御判断手段を有することを特徴とする駆動出力監視回路。 Ri examines the plurality of loads each state by measuring the current supplied to the load is selected, and displays the plurality of load conditions, respectively, after checking the status of the plurality of loads, the switching so that the power supply switching means to the load is the driving power source, the plurality of drives the load, the current constantly an abnormality of the plurality of load by monitoring the current measured by the measuring means drive output monitoring circuit, characterized in that it comprises a control determining means for monitoring.
  3. 【請求項3】 前記制御判断手段は、前記駆動電源を前記複数の負荷に供給する際に、前記駆動電源を前記負荷に供給する前の前記複数の負荷それぞれに対する検査で異常が検出された負荷に応じて前記複数の負荷への前記駆動電源の供給を制御することを特徴とする請求項2記載の駆動出力監視回路。 Wherein said control determining means, when supplying the driving power to the plurality of loads, the abnormality is detected in the inspection for each of the plurality of loads before supplying the driving power to said load load drive output monitoring circuit of claim 2, wherein the controlling the supply of the drive power to the plurality of loads in accordance with.
JP20505897A 1997-07-30 1997-07-30 Drive output monitoring circuit Expired - Fee Related JP3627458B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7373529B2 (en) 2002-06-28 2008-05-13 Fujitsu Limited Performing a power supply check for an information storage device to increase power consumption in a stepwise manner
JP2013159256A (en) * 2012-02-07 2013-08-19 Kyosan Electric Mfg Co Ltd Ground unit monitoring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7373529B2 (en) 2002-06-28 2008-05-13 Fujitsu Limited Performing a power supply check for an information storage device to increase power consumption in a stepwise manner
JP2013159256A (en) * 2012-02-07 2013-08-19 Kyosan Electric Mfg Co Ltd Ground unit monitoring device

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