JP2003215194A - Abnormality monitoring device for coil - Google Patents
Abnormality monitoring device for coilInfo
- Publication number
- JP2003215194A JP2003215194A JP2002009856A JP2002009856A JP2003215194A JP 2003215194 A JP2003215194 A JP 2003215194A JP 2002009856 A JP2002009856 A JP 2002009856A JP 2002009856 A JP2002009856 A JP 2002009856A JP 2003215194 A JP2003215194 A JP 2003215194A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- monitored
- current
- coils
- abnormality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コイルの異常を検
知するコイルの異常監視装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil abnormality monitoring device for detecting a coil abnormality.
【０００２】[0002]
【従来の技術】従来、この種のコイルの異常監視装置
は、直流の電源端子と、断線して動作しないと重大事故
につながるような重要なコイル（以下、監視対象のコイ
ルと呼ぶ。）との間にコイルインピーダンスの大きな断
線検出リレーを設けて形成され、このリレーを介して該
コイルの動作電流より微少な電流を通流する。監視対象
のコイルには最小動作電流より小さい電流が流れるよう
に設定されている。そして、監視対象のコイルの断線
時、断線検出リレーの通電停止によってコイルの断線を
検出し、ランプ回路に設けた断線検出リレーの接点を開
放または閉成してランプを消灯し、監視対象のコイルの
断線検出を行っている。その従来例を図６に示す。監視
対象のコイルと断線検出リレーからそれぞれｂ接点を引
き出し、断線検出信号の出力を行う。断線検出リレー、
監視対象のコイルは励磁されると、それぞれの接点を開
放し、無励磁状態ではそれぞれの接点を閉成する。以
下、監視対象コイルの正常・断線、トリップ指令の有・
無に分けて、監視対象のコイルの断線検出について説明
する。
（１）監視対象のコイルが正常でトリップ指令が出てい
ない場合監視対象のコイルの最小動作電流より小さい電
流で動作する断線検出リレーが励磁状態であり、断線検
出リレーのｂ接点が開放され、断線検出信号は出力され
ない。なお、このとき、監視対象のコイルには最小動作
電流より小さい電流が流れている為、無励磁状態であ
り、監視対象のコイルのｂ接点は閉成されている。
（２）監視対象のコイルが断線していてトリップ指令が
出ていない場合監視対象のコイルが断線しているため、
断線検出リレーには電流が流れず、無励磁状態なので、
断線検出リレーのｂ接点は閉成されており、また、監視
対象のコイルにも電流は流れず、無励磁状態なので、監
視対象のコイルのｂ接点は閉成されているため、断線検
出信号は出力されている。
（３）監視対象のコイルが正常でトリップ指令が出てい
る場合トリップ指令でＯＮする接点により、断線検出リ
レーには電流が流れず、無励磁状態なので、断線検出リ
レーのｂ接点は閉成されているが、監視対象のコイルは
励磁されているので、監視対象のコイルのｂ接点が開放
され、断線検出信号は出力されない。
（４）監視対象のコイルが断線していてトリップ指令が
出ている場合トリップ指令でＯＮする接点により、断線
検出リレーには電流が流れず、無励磁状態なので、断線
検出リレーのｂ接点は閉成されており、監視対象のコイ
ルは断線していて無励磁状態なので、監視対象のコイル
のｂ接点も閉成され、断線検出信号は出力されている。2. Description of the Related Art Conventionally, a coil abnormality monitoring device of this type includes a DC power supply terminal and an important coil (hereinafter referred to as a monitoring target coil) that leads to a serious accident if it is not disconnected and operates. A disconnection detection relay having a large coil impedance is provided between the two, and a current smaller than the operating current of the coil is passed through this relay. It is set so that a current smaller than the minimum operating current flows through the coil to be monitored. When the coil to be monitored is disconnected, the disconnection detection relay is de-energized to detect the coil disconnection, and the contact of the disconnection detection relay provided in the lamp circuit is opened or closed to turn off the lamp. Disconnection detection. The conventional example is shown in FIG. The b-contact is drawn from each of the coil to be monitored and the disconnection detection relay to output a disconnection detection signal. Disconnection detection relay,
When the coil to be monitored is excited, each contact is opened, and in the non-excited state, each contact is closed. Below is normal / disconnection of monitored coil, presence of trip command /
The disconnection detection of the coil to be monitored will be described separately. (1) When the coil to be monitored is normal and the trip command is not issued: The disconnection detection relay that operates with a current smaller than the minimum operating current of the coil to be monitored is in the excited state, and the contact b of the disconnection detection relay is opened. The disconnection detection signal is not output. At this time, since a current smaller than the minimum operating current is flowing in the coil to be monitored, it is in a non-excitation state, and the b contact of the coil to be monitored is closed. (2) When the coil to be monitored is disconnected and the trip command is not issued. Since the coil to be monitored is disconnected,
No current flows in the disconnection detection relay, and it is in the non-excitation state.
The b-contact of the disconnection detection relay is closed, and the current does not flow through the coil to be monitored and the coil is not excited. Therefore, the b-contact of the coil to be monitored is closed. It is being output. (3) When the coil to be monitored is normal and a trip command has been issued Due to the contact that turns on in response to the trip command, no current flows in the disconnection detection relay and it is in the non-excitation state, so the b contact of the disconnection detection relay is closed. However, since the coil to be monitored is excited, the b contact of the coil to be monitored is opened and the disconnection detection signal is not output. (4) When the coil to be monitored has a break and a trip command is issued The contact that is turned on by the trip command causes no current to flow in the break detection relay and is in the non-excitation state, so the b contact of the break detection relay is closed. Since the coil to be monitored is disconnected and in a non-excited state, the b contact of the coil to be monitored is also closed and the disconnection detection signal is output.
【０００３】[0003]
【発明が解決しようとする課題】従来例の場合、断線検
出リレーを用いているため、監視対象のコイル、或い
は、断線検出リレーにひび、割れ目等のどちらかに異常
が生じても異常を検出してしまい、どちらのコイルに異
常が起きたか特定できない上、監視対象のコイルが複数
個ある場合、監視対象のコイルにそれぞれ断線検出リレ
ーを設けなければならないため、監視対象のコイルの追
加、削除が容易に行えない、という問題点があった。In the case of the conventional example, since the disconnection detection relay is used, the abnormality is detected even if the coil to be monitored or the disconnection detection relay has an abnormality such as a crack or a crack. In addition, it is not possible to identify which coil has an abnormality, and if there are multiple monitored coils, it is necessary to provide a disconnection detection relay for each monitored coil. There was a problem that it could not be done easily.
【０００４】本発明の課題は、複数の監視対象のコイル
を監視すると共に、異常のコイルを特定し、監視対象の
コイルの追加、削除を容易にすることにある。An object of the present invention is to monitor a plurality of coils to be monitored, identify an abnormal coil, and easily add or delete coils to be monitored.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、主回路の電源母線間に並列に接続された複数の監視
対象のコイルの異常を監視する異常監視装置において、
主回路とは別の定電圧電源と、逆電流の流入を防止する
ダイオードと、電流測定器と、複数の監視対象のコイル
を切り替える切替スイッチを設け、複数の監視対象のコ
イルを切替スイッチによつて切り替え、電流測定器が検
出した電流情報に基づいて異常監視する。また、主回路
とは別の定電流電源と、逆電流の流入を防止するダイオ
ードと、電圧測定器と、複数の監視対象のコイルを切り
替える切替スイッチを設け、複数の監視対象のコイルを
切替スイッチによつて切り替え電圧測定器が検出した電
圧情報に基づいて異常監視する。In order to solve the above-mentioned problems, in an abnormality monitoring device for monitoring abnormality of a plurality of coils to be monitored connected in parallel between power supply buses of a main circuit,
A constant-voltage power supply separate from the main circuit, a diode that prevents reverse current from flowing in, a current measuring device, and a changeover switch that switches between multiple coils to be monitored are provided. Then, the abnormality is monitored based on the current information detected by the current measuring device. In addition, a constant current power supply separate from the main circuit, a diode that prevents the inflow of reverse current, a voltage measuring device, and a changeover switch that switches between multiple monitored coils are provided. Thus, the abnormality is monitored based on the voltage information detected by the switching voltage measuring device.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施形態を図面を
用いて説明する。図１は、本発明のコイルの異常監視装
置の一実施形態を示す。図１において、異常監視装置
（一点鎖線部）２１は、正の電源母線１と負の電源母線
２の主回路に接続された複数の監視対象のコイル４に切
替スイッチ部（鎖線部）１６を介して回路に流れる電流
を測定する電流測定器１２と逆電流の流入を防止するダ
イオード１５を接続し、この電流測定器１２とダイオー
ド１５に主回路とは別の定電圧電源１１を接続する。定
電圧電源１１は、監視対象のコイル４に該コイルの動作
電流より微少な電流が流れるような定電圧に設定されて
いる。切替スイッチ部１６は、複数の監視対象のコイル
４にそれぞれ切替スイッチを接続し、この切替スイッチ
を切り替えて対象のコイル４を入り、切りする。監視対
象のコイル４が正常である場合、定電圧電源１１からダ
イオード１５、切替スイッチ部１６、電流測定器１２を
介してコイル４にはある一定の電流が流れる。電流測定
器１２はこの電流を検出し、この電流測定器１２の電流
情報を用いて監視対象のコイル４は正常であると判断す
る。一方、監視対象のコイル４にひび、割れ目等の異常
が生じると、コイル４のインピーダンス増加により回路
に流れる電流が小さくなる。さらに、コイル４が完全に
断線すると、回路を流れる電流は零になる。電流測定器
１２はこの電流を検出し、この電流測定器１２の電流情
報を用いて監視対象のコイル４は異常であると判断す
る。また、複数ある監視対象のコイル４のうち異常を起
こしたコイルを特定するには、切替スイッチ部１６の切
替スイッチにより回路を切り替えて異常監視する。これ
により、１台の異常監視装置で複数のコイルの異常を監
視、検出し、更に、異常が検出されたコイルを特定する
ことができる。本実施形態では、監視対象のコイルを１
つ追加、削除するためには、２本のケーブルを追加、削
除することで足りるので、監視対象のコイルの追加、削
除を容易に行うことができる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a coil abnormality monitoring device of the present invention. In FIG. 1, an abnormality monitoring device (dashed-dotted line portion) 21 includes a changeover switch portion (chain-dotted portion) 16 for a plurality of monitored coils 4 connected to main circuits of a positive power source bus 1 and a negative power source bus 2. A current measuring device 12 for measuring a current flowing through the circuit is connected to a diode 15 for preventing a reverse current from flowing in, and a constant voltage power supply 11 different from the main circuit is connected to the current measuring device 12 and the diode 15. The constant voltage power supply 11 is set to a constant voltage so that a current smaller than the operating current of the coil 4 to be monitored flows. The changeover switch unit 16 connects a changeover switch to each of the plurality of monitoring target coils 4, and switches the changeover switch to turn the target coil 4 on and off. When the coil 4 to be monitored is normal, a constant current flows from the constant voltage power supply 11 to the coil 4 via the diode 15, the changeover switch unit 16 and the current measuring device 12. The current measuring device 12 detects this current and uses the current information of the current measuring device 12 to determine that the coil 4 to be monitored is normal. On the other hand, if an abnormality such as a crack or a crack occurs in the coil 4 to be monitored, the impedance of the coil 4 increases and the current flowing through the circuit decreases. Further, when the coil 4 is completely broken, the current flowing through the circuit becomes zero. The current measuring device 12 detects this current and uses the current information of the current measuring device 12 to determine that the coil 4 to be monitored is abnormal. Further, in order to identify a coil having an abnormality among the plurality of coils 4 to be monitored, the circuit is switched by the changeover switch of the changeover switch unit 16 and the abnormality is monitored. Accordingly, it is possible to monitor and detect the abnormality of the plurality of coils with one abnormality monitoring device, and further to identify the coil in which the abnormality is detected. In this embodiment, the number of coils to be monitored is 1
It is sufficient to add and remove two cables in order to add and remove one, so that the coils to be monitored can be easily added and removed.
【０００７】図２は、本発明の他の実施形態を示す。図
２において、異常監視装置（一点鎖線部）２２は、正の
電源母線１と負の電源母線２の主回路に接続された複数
の監視対象のコイル４に切替スイッチ部（鎖線部）１６
を介して該コイルにかかる電圧を測定する電圧測定器１
４と逆電流の流入を防止するダイオード１５を接続し、
この電圧測定器１４とダイオード１５に主回路とは別の
定電流電源１３を接続する。定電流電源１３は、監視対
象のコイル４に該コイルの動作電流より微少な電流が流
れるような定電流に設定されている。切替スイッチ部１
６は、複数の監視対象のコイル４にそれぞれ切替スイッ
チを接続し、切替スイッチを切り替えて対象のコイル４
を入り、切りする。監視対象のコイル４が正常である場
合、定電流電源１３からダイオード１５、切替スイッチ
部１６を介してコイル４にはある一定の電圧がかかる。
電圧測定器１４はこの電圧を検出し、この電圧測定器１
４の電圧情報を用いて監視対象のコイル４は正常である
と判断する。一方、監視対象のコイル４にひび、割れ目
等の異常が生じると、コイル４のインピーダンス増加に
よりコイル４にかかる電圧が大きくなる。さらに、完全
に断線すると、コイル４にかかる電圧は非常に大きくな
る。電圧測定器１４はこの電圧を検出し、この電圧測定
器１４の電圧情報を用いて監視対象のコイル４は異常で
あると判断する。また、複数ある監視対象のコイル４を
切替スイッチ部１６の切替スイッチにより回路を切り替
えて異常監視する。これにより、１台の異常監視装置で
複数のコイルの異常を監視、検出し、更に、異常が検出
されたコイルを特定することができる。本実施形態で
は、監視対象のコイルを１つ追加、削除するためには、
２本のケーブルを追加、削除することで足りるので、監
視対象のコイルの追加、削除を容易に行うことができ
る。FIG. 2 shows another embodiment of the present invention. In FIG. 2, the abnormality monitoring device (dashed-dotted line portion) 22 includes a changeover switch portion (chain-dotted portion) 16 on a plurality of monitored coils 4 connected to main circuits of a positive power source bus 1 and a negative power source bus 2.
Voltage measuring device 1 for measuring the voltage applied to the coil via the
4 and the diode 15 which prevents the inflow of reverse current are connected,
A constant current power supply 13 different from the main circuit is connected to the voltage measuring device 14 and the diode 15. The constant current power supply 13 is set to a constant current such that a current smaller than the operating current of the coil 4 to be monitored flows. Changeover switch unit 1
Reference numeral 6 indicates a coil 4 to be monitored by connecting a changeover switch to each of the plurality of coils 4 to be monitored and switching the changeover switch.
Enter and cut. When the coil 4 to be monitored is normal, a certain voltage is applied to the coil 4 from the constant current power supply 13 via the diode 15 and the changeover switch unit 16.
The voltage measuring device 14 detects this voltage, and the voltage measuring device 1
It is judged that the coil 4 to be monitored is normal using the voltage information of 4. On the other hand, when an abnormality such as a crack or a crack occurs in the coil 4 to be monitored, the impedance of the coil 4 increases and the voltage applied to the coil 4 increases. Further, when the wire is completely broken, the voltage applied to the coil 4 becomes very large. The voltage measuring device 14 detects this voltage, and uses the voltage information of the voltage measuring device 14 to determine that the coil 4 to be monitored is abnormal. Further, a plurality of coils 4 to be monitored are switched by the change-over switch of the change-over switch section 16 to monitor the abnormality. Accordingly, it is possible to monitor and detect the abnormality of the plurality of coils with one abnormality monitoring device, and further to identify the coil in which the abnormality is detected. In this embodiment, in order to add or delete one coil to be monitored,
Since it suffices to add and remove two cables, it is possible to easily add and remove the coils to be monitored.
【０００８】図３は、図１及び図２の各実施形態の切替
スイッチ部１６の切替スイッチを手動切替スイッチとす
る実施形態である。図３において、監視対象のコイル４
を接続している回路の各々の入力側、出力側に連動して
開閉する押釦スイッチ３１、３２を接続する。このよう
にすれば、押釦スイッチ３１を押している間はそこに接
続されているコイルを、押釦スイッチ３２を押している
間はそこに接続されているコイルをそれぞれ切り替えて
監視することができる。ここで、この切替方法として
は、押釦スイッチ等を用いた手動により切り替える方法
の他に、リレーやタイマー等の組合せを用いて切り替え
る方法、デジタル信号を用いてプログラムにより切り替
える方法のいずれかまたは組合せた方法がある。FIG. 3 shows an embodiment in which the changeover switch of the changeover switch section 16 of each of the embodiments shown in FIGS. 1 and 2 is a manual changeover switch. In FIG. 3, the coil 4 to be monitored
The push button switches 31 and 32 that open and close in conjunction with the input side and the output side of each of the circuits connected to are connected. With this configuration, the coil connected to the push button switch 31 can be switched while the push button switch 31 is being pressed, and the coil connected thereto can be switched to be monitored while the push button switch 32 is being pressed. Here, as this switching method, in addition to a manual switching method using a push button switch or the like, a switching method using a combination of relays or a timer, a program switching method using a digital signal, or a combination thereof is used. There is a way.
【０００９】図４は、リレー・タイマーの組合せを用い
た回路切替の実施形態を示す。図４において、監視対象
のコイル４が接続されている母線とは別の正の電源母線
４１、負の電源母線４２の間にリレー４５，４６，４７
とタイマー４８，４９を接続する。まず、入信号４３が
ＯＮされると、タイマー４８が励磁され、同時にリレー
４６が励磁され、リレー４６のａ接点４６’が閉成して
自己保持回路を形成し、監視対象のコイル４が接続され
ている監視回路を閉成するリレー４６のａ接点３３が閉
成してコイル４の異常監視が開始される。タイマー４８
の設定時間が経つと、タイマー４８のｂ接点４８’が開
放され、リレー４６が無励磁になることにより、リレー
４６のａ接点３３が開放し、監視していたコイル４の異
常監視を止める。同時にタイマー４８のａ接点４８”が
閉成され、リレー４７が励磁され、これによりリレー４
７のａ接点４７’が閉成して自己保持回路が形成され、
監視対象のコイル４が接続されている監視回路を閉成す
るリレー４７のａ接点３４が閉成してコイルの異常監視
が開始される。前記のコイル切替時にタイマー４９は励
磁されていてこのタイマーの設定時間が経つと、タイマ
ー４９のａ接点４９”はリレー４６、タイマー４８の接
続されている回路に接続されているので、前記と同様に
監視対象のコイル４を自動的に切り替える。また、切信
号４４がＯＮされると、リレー４５が励磁され、リレー
４５のｂ接点４５’、４５”が開放し、異常監視を止め
る。このようにして、異常監視対象のコイルをリレー・
タイマーを用いて切り替えることができる。FIG. 4 shows an embodiment of circuit switching using a combination of relay timers. In FIG. 4, relays 45, 46, 47 are provided between a positive power source bus 41 and a negative power source bus 42 which are different from the bus to which the coil 4 to be monitored is connected.
And timers 48 and 49 are connected. First, when the input signal 43 is turned on, the timer 48 is excited, the relay 46 is simultaneously excited, the a contact 46 'of the relay 46 is closed to form a self-holding circuit, and the coil 4 to be monitored is connected. The a-contact 33 of the relay 46, which closes the monitoring circuit, is closed, and the abnormality monitoring of the coil 4 is started. Timer 48
After the set time of, the b contact 48 'of the timer 48 is opened and the relay 46 is de-excited, the a contact 33 of the relay 46 is opened, and the abnormal monitoring of the coil 4 being monitored is stopped. At the same time, the "a" contact 48 "of the timer 48 is closed, and the relay 47 is excited.
7 a-contact 47 'is closed to form a self-holding circuit,
The a-contact 34 of the relay 47, which closes the monitoring circuit to which the coil 4 to be monitored is connected, is closed and the coil abnormality monitoring is started. Since the timer 49 is excited when the coil is switched and the set time of this timer elapses, the a contact 49 ″ of the timer 49 is connected to the circuit to which the relay 46 and the timer 48 are connected. The coil 4 to be monitored is automatically switched to 1. When the off signal 44 is turned on, the relay 45 is excited and the b contacts 45 ′ and 45 ″ of the relay 45 are opened to stop the abnormality monitoring. In this way, the coil to be monitored for abnormality is relayed
It can be switched using a timer.
【００１０】図５は、図３及び図４の実施形態のタイミ
ングチャートを示す。図３の手動切替の場合、押釦スイ
ッチ３１または３２による切替のため、スイッチを押し
ている時間のみコイルを監視することとなる。また、図
４のリレー・タイマーを用いた切替の場合、入信号でコ
イルの異常監視を開始、切信号で停止するので、その間
はタイマーの設定時間で自動切替となる。FIG. 5 shows a timing chart of the embodiment of FIGS. 3 and 4. In the case of the manual switching shown in FIG. 3, since the switching is performed by the push button switch 31 or 32, the coil is monitored only while the switch is being pressed. Further, in the case of switching using the relay timer of FIG. 4, coil abnormality monitoring is started by an incoming signal and stopped by an off signal, during which time automatic switching is performed at the timer set time.
【００１１】[0011]
【発明の効果】以上説明したように、本発明によれば、
監視回路に流れる電流値の変化を用いて、また、監視対
象のコイルにかかる電圧値の変化を用いて、１台の異常
監視装置で複数のコイルの異常を監視することができ、
かつ、監視対象のコイルの追加、削除が容易に行うこと
ができる。また、１台の異常監視装置で複数の監視対象
のコイルを切り替えて異常を監視、検出することによっ
て、異常が検出されたコイルを特定することができる。As described above, according to the present invention,
By using the change of the current value flowing in the monitoring circuit and the change of the voltage value applied to the coil to be monitored, one abnormality monitoring device can monitor the abnormality of a plurality of coils.
In addition, the coils to be monitored can be easily added and deleted. Further, by switching a plurality of coils to be monitored by one abnormality monitoring device and monitoring and detecting the abnormality, the coil in which the abnormality is detected can be specified.
【図１】本発明のコイルの異常監視装置の一実施形態FIG. 1 is an embodiment of a coil abnormality monitoring device of the present invention.
【図２】本発明の他の実施形態FIG. 2 is another embodiment of the present invention.
【図３】本発明の切替スイッチ部を手動切替スイッチと
する実施形態FIG. 3 is an embodiment in which the changeover switch unit of the present invention is a manual changeover switch.
【図４】本発明のリレー・タイマーの組合せを用いた回
路切替の実施形態FIG. 4 is an embodiment of circuit switching using the combination of the relay timer of the present invention.
【図５】本発明の切替のタイミングチャートFIG. 5 is a timing chart of switching according to the present invention.
【図６】従来例FIG. 6 Conventional example
１…正の電源母線、２…負の電源母線、３…投入指令接
点、４…監視対象のコイル、１１…定電圧電源、１２…
電流測定器、１３…定電流電源、１４…電圧測定器、１
５…ダイオード、１６…切替スイッチ部、２１…異常監
視装置、２２…異常監視装置、３１，３２…押釦スイッ
チ、３３，３４…接点、４１…正の電源母線、４２…負
の電源母線、４３…入信号、４４…切信号、４５…リレ
ー、４６…リレー、４７…リレー、４８…タイマー、４
９…タイマーDESCRIPTION OF SYMBOLS 1 ... Positive power bus, 2 ... Negative power bus, 3 ... Make command contact, 4 ... Monitored coil, 11 ... Constant voltage power supply, 12 ...
Current measuring device, 13 ... Constant current power source, 14 ... Voltage measuring device, 1
5 ... Diode, 16 ... Changeover switch section, 21 ... Abnormality monitoring device, 22 ... Abnormality monitoring device, 31, 32 ... Push button switch, 33, 34 ... Contact, 41 ... Positive power source bus bar, 42 ... Negative power source bus bar, 43 ... incoming signal, 44 ... off signal, 45 ... relay, 46 ... relay, 47 ... relay, 48 ... timer, 4
9 ... Timer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 塙 祐一 茨城県日立市大みか町五丁目２番１号 株 式会社日立製作所情報制御システム事業部 内 (72)発明者 清水 純二 茨城県日立市大みか町五丁目２番１号 株 式会社日立製作所情報制御システム事業部 内 Ｆターム(参考） 2G014 AA02 AB49 5G053 AA07 AA16 BA01 DA01 DA03 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yuichi Hanawa 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture Information Control Systems Division, Hitachi, Ltd. Within (72) Inventor Junji Shimizu 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture Information Control Systems Division, Hitachi, Ltd. Within F-term (reference) 2G014 AA02 AB49 5G053 AA07 AA16 BA01 DA01 DA03
Claims (3)
複数の監視対象のコイルの異常を監視する異常監視装置
において、前記主回路とは別の定電圧電源と、逆電流の
流入を防止するダイオードと、電流測定器と、前記複数
の監視対象のコイルを切り替える切替スイッチを設け、
前記複数の監視対象のコイルを前記切替スイッチによつ
て切り替え、前記電流測定器が検出した電流情報に基づ
いて異常監視することを特徴とするコイルの異常監視装
置。1. An abnormality monitoring device for monitoring abnormality of a plurality of monitoring target coils connected in parallel between power supply buses of a main circuit, wherein a constant voltage power supply different from the main circuit and a reverse current flow are provided. A diode to prevent, a current measuring device, and a changeover switch for switching the plurality of monitored coils,
An abnormality monitoring device for a coil, wherein the plurality of coils to be monitored are switched by the changeover switch, and abnormality monitoring is performed based on current information detected by the current measuring device.
複数の監視対象のコイルの異常を監視する異常監視装置
において、前記主回路とは別の定電流電源と、逆電流の
流入を防止するダイオードと、電圧測定器と、前記複数
の監視対象のコイルを切り替える切替スイッチを設け、
前記複数の監視対象のコイルを前記切替スイッチによつ
て切り替え、前記電圧測定器が検出した電圧情報に基づ
いて異常監視することを特徴とするコイルの異常監視装
置。2. An abnormality monitoring device for monitoring abnormality of a plurality of monitoring target coils connected in parallel between power supply buses of a main circuit, wherein a constant current power supply different from the main circuit and an inflow of reverse current are provided. A diode for preventing, a voltage measuring device, and a changeover switch for switching the plurality of coils to be monitored are provided.
A coil abnormality monitoring device, wherein the plurality of coils to be monitored are switched by the changeover switch, and abnormality monitoring is performed based on voltage information detected by the voltage measuring device.
切替スイッチの切り替えは、押釦スイッチを用いた手動
による切り替え、または、リレーとタイマーの組合せに
よる切り替え、または、デジタル信号を用いたプログラ
ムによる切り替え、または、これらの組合せによる切り
替えを用いることを特徴とするコイルの異常監視装置。3. The switching according to claim 1, wherein the changeover switch is changed over manually by using a push button switch, by a combination of a relay and a timer, or by a program using a digital signal. Or, a coil abnormality monitoring device characterized by using switching by a combination thereof.
Priority Applications (1)
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|---|---|---|---|
| JP2002009856A JP4045571B2 (en) | 2002-01-18 | 2002-01-18 | Coil abnormality monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002009856A JP4045571B2 (en) | 2002-01-18 | 2002-01-18 | Coil abnormality monitoring device |
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| Publication Number | Publication Date |
|---|---|
| JP2003215194A true JP2003215194A (en) | 2003-07-30 |
| JP4045571B2 JP4045571B2 (en) | 2008-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013031019A1 (en) * | 2011-09-02 | 2015-03-23 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
| KR20230016922A (en) * | 2021-07-27 | 2023-02-03 | 국방기술품질원 | Relay accelerated life prediction system and method |
-
2002
- 2002-01-18 JP JP2002009856A patent/JP4045571B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013031019A1 (en) * | 2011-09-02 | 2015-03-23 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
| KR20230016922A (en) * | 2021-07-27 | 2023-02-03 | 국방기술품질원 | Relay accelerated life prediction system and method |
| KR102632918B1 (en) * | 2021-07-27 | 2024-02-02 | 국방기술품질원 | Relay accelerated life prediction system and method |
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| Publication number | Publication date |
|---|---|
| JP4045571B2 (en) | 2008-02-13 |
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