JPS6282321A - Monitoring device for measurement signal - Google Patents
Monitoring device for measurement signalInfo
- Publication number
- JPS6282321A JPS6282321A JP60223041A JP22304185A JPS6282321A JP S6282321 A JPS6282321 A JP S6282321A JP 60223041 A JP60223041 A JP 60223041A JP 22304185 A JP22304185 A JP 22304185A JP S6282321 A JPS6282321 A JP S6282321A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- measurement
- measurement signal
- change
- signals
- 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 Or Calibration Of Command Recording Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
本発明は同一の測定対象に設けられた２つの測定系のそ
れぞれから導かれてくる測定信号を監視し、異常のある
測定信号を判別してこれの後続処理への伝達を阻止する
測定信号監視装置に関する。The present invention is a measurement signal monitor that monitors measurement signals derived from each of two measurement systems installed on the same measurement object, identifies abnormal measurement signals, and prevents them from being transmitted to subsequent processing. Regarding equipment.
同一の測定対象に２つの測定系を設け、それぞれから導
かれてくる測定信号のうちいずれか一方を選択して後続
処理へ伝達することは公知である。
この場合に従来においては運用中の測定信号の異常を監
視員が判別して手動で他方の測定信号に切換えているの
で、特に夜間操業設備にあっては問題があり、自動化す
ることが望まれている。
しかしながら、２つの測定信号を単に比較するだけでは
、いずれかに異常があることを検出できるにしても異常
側を特定化することはできない。It is known that two measurement systems are provided for the same measurement object, and one of the measurement signals derived from each is selected and transmitted to subsequent processing. In this case, in the past, a supervisor would identify an abnormality in the measurement signal during operation and manually switch to the other measurement signal, which is a problem especially in equipment that operates at night, so automation is desirable. ing. However, by simply comparing two measurement signals, even if it is possible to detect that one of them is abnormal, it is not possible to specify the abnormal side.
本発明の目的は、自動的に精度よく異常判定を行なって
正常な測定信号への切換えを行なうできるだけ簡単な手
段を提供することにある。An object of the present invention is to provide as simple a means as possible for automatically and accurately determining abnormality and switching to a normal measurement signal.
上記目的は各測定信号のそれぞれに、
（ａｌ測定信号の変化量の絶対値を算出する手段と、中
）その変化量が予め定められた値を上回ったことを条件
に第１の異常判定信号を発生する手段と、（ｃ）自分側
の変化量が相手側の変化量より所定値以上上回ったこと
を条件に第２の異常判定信号を発生する手段と、
（ｄｌ第１および第２の異常判定信号のうちのいずれか
が発生したとき、後続処理への測定信号の伝達を、自分
側は阻止して相手側を許可する信号切換手段と
を設けることによって達成される。The above purpose is to provide a means for calculating the absolute value of the amount of change in the al measurement signal for each of the measurement signals; (c) means for generating a second abnormality determination signal on the condition that the amount of change on the own side exceeds the amount of change on the other side by a predetermined value; This is achieved by providing a signal switching means that blocks transmission of the measurement signal to subsequent processing on one side and permits transmission on the other side when any one of the abnormality determination signals is generated.
【実施例］
図示の本発明装置の実施例によれば、同一の測定対象に
設けられた図示されていない２つの測定系からそれぞれ
導かれてくる２つの測定信号Ａ。
Ｂは、それぞれ変化量算出手段１１．１２において、そ
れぞれの前回値Ａ”、Ｂ″ との差の絶対値をとること
によって、
ＨＡ＝ ｌ Ａ Ａ’ １
ＨＢ＝ ｌ Ｂ−Ｂ’ １
なる変化量に変換される。各変化量ＨＡ、ＨＢはそれぞ
れ第１の異常判定手段２Ｌ２２および第２の異常判定手
段３１．３２に伝達される。第１の異常判定手段２１．
２２は、それぞれ自分側の変化ｉＨＡ。
ＨＢを予め定められた値Ｈ３と比較し、ＨＡ＞Ｈ３
ＨＢ＞Ｈ３
なる条件をもって、自分側の測定信号Ａ、Ｂに対する第
１の異常判定信号を出力する。第２の異常判定手段３１
．３２は、それぞれ自分側の変化量ＨＡ。
ＨＢと相手方の変化量ＨＢ、ＨＡと比較して、ＨＡ＞Ｈ
Ｂ ＋α
ＨＢ＞ＨＡ＋α
なる条件をもって自分側の測定信号Ａ、 Ｂに対する
第１の異常判定信号を出力する。αは予め定められた値
である。
第１および第２の異常判定信号は測定信号Ａ。
Ｂのそれぞれの側でオアゲート４１．４２を介してアン
ドゲート５１．５２の反転手段を有する方の入力端に伝
達される。アントゲ−） ５１ 、５２の他方の入力端
にはそれぞれフリップフロップ５０からの測定系選択信
号ＷＡ、Ｗ、が与えられる。それぞれの側には別のアン
ドゲート６１，６２がそれぞれ設けられていて、それぞ
れ自分側のオアゲート４１．４２の出力信号を一方の入
力端に、そしてそれぞれ自分側の選択信号ＷＡ、Ｗ、を
他方の入力端に入力される。アンドゲート５１，５２の
出力信号は、他側に属する別のアンドゲート６２，６１
の出力信号と共にオアゲー１−７１．７２に入力される
。測定信号Ａ、Ｂを出力段９に導（線路に挿入されたス
イッチ８１．８２はそれぞれオアゲート７１．７２の出
力信号によって制御される。フリップフロップ５０には
外部からの指定信号ＳＡ、ＳＲと共にオア入力にてオア
ゲート７１，７２の出力信号が導かれるようになってい
る。
１０は測定信号Ａ、Ｂとの差Ａ−Ｂの絶対値が所定値α
を上回ったことを条件に異常発生警報信号を発する。こ
れは警報信号は図示されていない例えばランプおよびま
たは警報ブザー等に与えることができる。しかし、これ
は異常発生を表示するだけで、どちらの測定信号の異常
かを特定することはできない。
ここで、外部からの指定信号ＳＡにより測定信号Ａを選
択するように指定がなされているものとする。このとき
、ＷＡは「１」信号であり、Ｗ。
は「Ｏ」信号である。いずれの測定信号も正常であれば
、オアゲー）４１，４２の出力信号はいずれも「０」で
ある。したがって、アンドゲート５１の出力信号が「１
」で、アントゲ−１−５２，６１，６２の出力信号が「
０」であり、それゆえスイッチ８１がオン、スイッチ８
２がオフになっている。したがって、出力段９は測定信
号Ａを後続処理のために伝達する。
判定手段２１．３１の少なくとも一方が異常判定信号（
「１」信号）を出力すると、アンドゲート５１の出力信
号が「０」に反転し、アンドゲート６１の出力信号が「
１」に反転し、アンドゲート５２．６２の出力信号は「
０」のままである。したがって、スイッチ８１がオフに
されると同時にスイッチ８２がオンされ、異常を発生し
ていない測定信号Ｂが出力段を介して後続処理のために
伝達されるという切換え動作が行われる。このとき、オ
アゲート７２の「１」に反転した出力信号は、フリ、プ
フロップ５０に導かれ、これによってＷ、ｒｌＪに、Ｗ
Ａは「０」に反転する。これにより、アンドゲート６１
の出力信号はｒＯＪに反転するが、アンドゲート５２の
出力信号が「１」に反転するので、スイッチ８２のオン
が保持される。測定系からの信号線の断線時には、その
うちにＨＡ＝０となって、判定手段２１ 、３１の異常
判定信号は消えるが、フリップフロップ５０を介する自
動的な選択信号切換えによってスイッチ８２のオン状態
保持が行われるために、再び異常側のスイッチ８１がオ
ンして元の状態に戻ってしまうようなことはない。この
場合に選択信号ＷＡ、Ｗ、を外部へ表示しておけば、手
段１０により外部へ警報が出力されるので、選択されて
いない側の測定系が異常であることを識別して、必要に
応じて点検を行って修理をすることが可能である。
【効果】
以上のように、本発明によれば、比較的筒車でありなが
ら精度よく異常を判定させて自動的に正常側の測定信号
へ切換えさせることができる。[Embodiment] According to the illustrated embodiment of the present invention apparatus, two measurement signals A are respectively derived from two measurement systems (not shown) provided on the same measurement target. The change amount calculation means 11.12 calculates the absolute value of the difference between B and the previous values A'' and B'', resulting in the following changes: HA=l A A' 1 HB= l B-B' 1 converted into quantity. The respective amounts of change HA and HB are transmitted to the first abnormality determining means 2L22 and the second abnormality determining means 31, 32, respectively. First abnormality determining means 21.
22 is the change iHA on their own side. HB is compared with a predetermined value H3, and a first abnormality determination signal for the measurement signals A and B on the own side is outputted under the following conditions: HA>H3 HB>H3. Second abnormality determination means 31
．． 32 is the amount of change HA on each own side. Comparing HB with the amount of change HB and HA of the other party, HA>H
The first abnormality determination signal for the measurement signals A and B on the own side is output under the condition that B + α HB>HA + α. α is a predetermined value. The first and second abnormality determination signals are the measurement signal A. On each side of B is transmitted via an OR gate 41.42 to the input of an AND gate 51.52 with inverting means. Measurement system selection signals WA, W from a flip-flop 50 are applied to the other input terminals of the analogues 51 and 52, respectively. Each side is provided with another AND gate 61, 62, each receiving the output signal of the OR gate 41, 42 on one input terminal, and the selection signal WA, W on the other side, respectively. is input to the input terminal of The output signals of the AND gates 51 and 52 are transmitted to another AND gate 62 and 61 belonging to the other side.
It is input to the or game 1-71.72 together with the output signal of. The measurement signals A and B are led to the output stage 9 (switches 81 and 82 inserted in the line are controlled by the output signals of the OR gates 71 and 72, respectively. The output signals of the OR gates 71 and 72 are guided at the input. 10 indicates that the absolute value of the difference A-B between the measurement signals A and B is a predetermined value α.
An abnormality alarm signal will be issued if the value is exceeded. This means that an alarm signal can be provided, for example, by a lamp and/or an alarm buzzer (not shown). However, this only indicates the occurrence of an abnormality, but cannot specify which measurement signal is abnormal. Here, it is assumed that measurement signal A is designated to be selected by external designation signal SA. At this time, WA is a "1" signal, and W. is the "O" signal. If both measurement signals are normal, the output signals of the OR game) 41 and 42 are both "0". Therefore, the output signal of the AND gate 51 is "1".
”, the output signals of Antogame 1-52, 61, and 62 are “
0'', therefore switch 81 is on, switch 8
2 is turned off. Output stage 9 therefore transmits measurement signal A for further processing. At least one of the determination means 21.31 receives the abnormality determination signal (
When the output signal (“1” signal) is output, the output signal of the AND gate 51 is inverted to “0”, and the output signal of the AND gate 61 is “
1", and the output signal of the AND gate 52.62 becomes "
0" remains. Therefore, at the same time as the switch 81 is turned off, the switch 82 is turned on, and a switching operation is performed in which the measurement signal B, in which no abnormality has occurred, is transmitted for subsequent processing via the output stage. At this time, the output signal of the OR gate 72 inverted to "1" is guided to the flip-flop 50, thereby causing W, rlJ to become W.
A is inverted to "0". As a result, AND gate 61
The output signal of is inverted to rOJ, but since the output signal of the AND gate 52 is inverted to "1", the switch 82 is kept on. When the signal line from the measurement system is disconnected, HA becomes 0 and the abnormality determination signals of the determination means 21 and 31 disappear, but the switch 82 is kept in the on state by automatic selection signal switching via the flip-flop 50. This prevents the switch 81 on the abnormal side from being turned on again and returning to the original state. In this case, if the selection signals WA, W are displayed externally, an alarm will be output externally by the means 10, so that it will be possible to identify that the measurement system on the unselected side is abnormal and perform necessary It is possible to carry out inspections and repairs as required. [Effect] As described above, according to the present invention, although it is a relatively hour wheel, it is possible to accurately determine abnormality and automatically switch to a normal measurement signal.
図は本発明装置の一実施例を示すブロック図である。
１１．１２− 変化量算出手段、２１．２２・第１の
異常判定手段、３１．３２ ・−第２の異常判定手段
、５１〜８１、５２〜８２− 信号切換手段。The figure is a block diagram showing one embodiment of the device of the present invention. 11.12 - Change amount calculation means, 21.22 - First abnormality determination means, 31.32 - Second abnormality determination means, 51 to 81, 52 to 82 - Signal switching means.
Claims (1)
ら導かれてくる測定信号を監視し、異常のある測定信号
を判別してこれの後続処理への伝達を阻止する測定信号
監視装置において、各測定信号のそれぞれに、 （ａ）測定信号の変化量の絶対値を算出する手段と、 （ｂ）その変化量が予め定められた値を上回ったことを
条件に第１の異常判定信号を発生する手段と、 （ｃ）自分側の変化量が相手側の変化量より所定値以上
上回ったことを条件に第２の異常判定信号を発生する手
段と、 （ｄ）第１および第２の異常判定信号のうちのいずれか
が発生したとき、後続処理への測定信号の伝達を、自分
側は阻止して相手側を許可する信号切換手段と を設けたことを特徴とする測定信号監視装置。[Claims] Monitoring the measurement signals derived from each of two measurement systems installed on the same measurement target, identifying an abnormal measurement signal, and preventing its transmission to subsequent processing. In the measurement signal monitoring device, for each measurement signal, (a) a means for calculating the absolute value of the amount of change in the measurement signal; and (b) a means for calculating the absolute value of the amount of change in the measurement signal; (c) means for generating a second abnormality determination signal on the condition that the amount of change on one's side exceeds the amount of change on the other side by a predetermined value; (d) It is characterized by being provided with a signal switching means for blocking transmission of the measurement signal to subsequent processing on one side and allowing transmission of the measurement signal on the other side when either of the first and second abnormality determination signals is generated. measurement signal monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60223041A JPS6282321A (en) | 1985-10-07 | 1985-10-07 | Monitoring device for measurement signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60223041A JPS6282321A (en) | 1985-10-07 | 1985-10-07 | Monitoring device for measurement signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6282321A true JPS6282321A (en) | 1987-04-15 |
| JPH0473530B2 JPH0473530B2 (en) | 1992-11-24 |
Family
ID=16791914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60223041A Granted JPS6282321A (en) | 1985-10-07 | 1985-10-07 | Monitoring device for measurement signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6282321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015105911A (en) * | 2013-12-02 | 2015-06-08 | 株式会社デンソー | Sensor device |
-
1985
- 1985-10-07 JP JP60223041A patent/JPS6282321A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015105911A (en) * | 2013-12-02 | 2015-06-08 | 株式会社デンソー | Sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0473530B2 (en) | 1992-11-24 |
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