JPH07243873A - Calibration method of measuring display device for uninterruptible power source apparatus - Google Patents

Calibration method of measuring display device for uninterruptible power source apparatus

Info

Publication number
JPH07243873A
JPH07243873A JP6033986A JP3398694A JPH07243873A JP H07243873 A JPH07243873 A JP H07243873A JP 6033986 A JP6033986 A JP 6033986A JP 3398694 A JP3398694 A JP 3398694A JP H07243873 A JPH07243873 A JP H07243873A
Authority
JP
Japan
Prior art keywords
value
analog
uninterruptible power
display
output
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.)
Pending
Application number
JP6033986A
Other languages
Japanese (ja)
Inventor
Tetsuo Yasuda
哲夫 安田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6033986A priority Critical patent/JPH07243873A/en
Publication of JPH07243873A publication Critical patent/JPH07243873A/en
Pending legal-status Critical Current

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  • Stand-By Power Supply Arrangements (AREA)
  • Analogue/Digital Conversion (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

PURPOSE:To provide a calibration method which requires no adjusting control in the calibration of a display value of a measuring display device built in an uninterruptible power source apparatus. CONSTITUTION:It is so arranged to have an analog/digital converters 4a, 4b... for converting an output of a detector to a digital value, a selector switch 7, an arithmetic circuit 11 which computes output values of the analog/digital converters to give a display value of a display device 9 and a push button switch 13 to output a contact signal 12 as state signal indicating the operating or stopping state of the body 1 of an uninterruptible power source apparatus and a calibration signal. The output values of the analog/digital converters 4a, 4b... at a measuring point selected with the selector switch 7 are stored into the arithmetic circuit 11 by the operation of a calibration signal switch 13 when the body 1 of the uninterruptible power source is operated or stopped and an offset value and a conversion gain of the analog/digital converters are computed with the arithmetic circuit 11 to calibrate the display value of the measuring display device 9.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、電算機電源などに使
用される無停電電源装置の計測表示器の校正方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of calibrating a measurement display of an uninterruptible power supply unit used as a computer power supply.

【0002】[0002]

【従来の技術】図2は、従来の無停電電源装置に内蔵さ
れた計測表示器の回路構成図であって、1は無停電電源
装置本体、2は無停電電源装置本体1の出力電圧を検出
する電圧検出器、3は無停電電源装置本体1の出力電流
を検出する電流検出器、4aは電圧検出器2の出力値を
デジタル値に変換するアナログ・デジタル変換器、4b
は電圧検出器3の出力値をデジタル値に変換するアナロ
グ・デジタル変換器、5aはアナログ・デジタル変換器
4aのオフセットを調整するオフセット調整ボリュウ
ム、6aはアナログ・デジタル変換器4aの変換ゲイン
を調整するゲイン調整ボリュウム、5bはアナログ・デ
ジタル変換器4bのオフセットを調整するオフセット調
整ボリュウム、6bはアナログ・デジタル変換器4bの
変換ゲインを調整するゲイン調整ボリュウム、7は計測
箇所のうち表示する計測箇所を選択するセレクタスイッ
チ、8はセレクタスイッチ7で選択された計測箇所のア
ナログ・デジタル変換器(4a,4b,・・・)の出力
を演算して表示値を出力する演算回路、9は前記表示値
を表示する7セグメントの表示器などからなる表示器で
ある。
2. Description of the Related Art FIG. 2 is a circuit configuration diagram of a measurement display unit incorporated in a conventional uninterruptible power supply, wherein 1 is an uninterruptible power supply main body and 2 is an output voltage of the uninterruptible power supply main body 1. A voltage detector for detecting 3, a current detector for detecting the output current of the uninterruptible power supply main body 1, and an analog-to-digital converter 4a for converting the output value of the voltage detector 2 into a digital value, 4a.
Is an analog / digital converter that converts the output value of the voltage detector 3 into a digital value, 5a is an offset adjustment volume that adjusts the offset of the analog / digital converter 4a, and 6a is the conversion gain of the analog / digital converter 4a. Gain adjustment volume 5b is an offset adjustment volume that adjusts the offset of the analog / digital converter 4b, 6b is a gain adjustment volume that adjusts the conversion gain of the analog / digital converter 4b, and 7 is a measurement point to be displayed among the measurement points. Selector switch for selecting, 8 is an arithmetic circuit for calculating the output of the analog-digital converters (4a, 4b, ...) At the measurement location selected by the selector switch 7 and outputting the display value, 9 is the display It is a display unit including a 7-segment display unit for displaying values.

【0003】図2において、表示器9の表示値を校正す
るには、セレクタスイッチ7で計測箇所として前記出力
電圧を選択して、オフセット調整ボリュウム5aで無停
電電源装置本体1が停止している時の表示器9の表示値
が「零」となるように調整し、ゲイン調整ボリュウム6
aで無停電電源装置本体1が運転時でその出力値が定格
値の時に表示器9の表示値が「定格値」となるように調
整する。また、出力電流に対しては、セレクタスイッチ
7で計測箇所として前記出力電流を選択して、オフセッ
ト調整ボリュウム5bとゲイン調整ボリュウム6bとを
上述の出力電圧の場合と同様の調整する。
In FIG. 2, in order to calibrate the display value on the display 9, the output voltage is selected as a measuring point by the selector switch 7, and the uninterruptible power supply main body 1 is stopped by the offset adjusting volume 5a. Adjust so that the display value on the display 9 at the time becomes “zero”, and adjust the gain adjustment volume 6
In step a, when the uninterruptible power supply main body 1 is in operation and the output value is the rated value, the display value of the display 9 is adjusted to be the "rated value". With respect to the output current, the selector switch 7 selects the output current as a measurement point, and the offset adjustment volume 5b and the gain adjustment volume 6b are adjusted in the same manner as in the case of the output voltage described above.

【0004】[0004]

【発明が解決しようとする課題】上記従来の計測表示器
の校正方法によると、無停電電源装置内の複数の計測箇
所毎のアナログ・デジタル変換器にそれぞれオフセット
調整ボリュウムとゲイン調整ボリュウムの2組のボリュ
ウムを必要とし、調整員がその都度、表示値を監視しな
がら調整する必要があった。
According to the above-described conventional calibration method for measuring and displaying apparatus, two sets of an offset adjusting volume and a gain adjusting volume are provided in each of the analog / digital converters at a plurality of measuring points in the uninterruptible power supply. It was necessary for the coordinator to make adjustments while monitoring the displayed value each time.

【0005】この発明の目的は、上述の問題点を解決す
る無停電電源装置の計測表示器の校正方法を提供するこ
とである。
An object of the present invention is to provide a method for calibrating a measurement display of an uninterruptible power supply that solves the above problems.

【0006】[0006]

【課題を解決するための手段】この発明では、無停電電
源装置内の複数の計測箇所の状態を検出するそれぞれの
検出器と、該検出器の出力値をデジタル量に変換するそ
れぞれのアナログ・デジタル変換器と、前記計測箇所の
うち表示する計測箇所を選択するセレクタスイッチと、
該セレクタスイッチで選択された計測箇所のアナログ・
デジタル変換器の出力を演算して表示値を出力する演算
回路と、前記表示値を表示する表示器とを備えた無停電
電源装置の計測表示器において、前記無停電電源装置の
運転・停止を示す状態信号と、前記表示値を校正する校
正信号とを前記セレクタスイッチで選択された計測箇所
のアナログ・デジタル変換器の出力を演算して表示値を
出力する演算回路に入力し、前記状態信号が停止状態の
時に前記校正信号を動作させて得られた前記アナログ・
デジタル変換器の出力値と、前記状態信号が運転状態の
時に前記校正信号を動作させて得られた前記アナログ・
デジタル変換器の出力値とにより前記演算回路の表示値
を校正することを特徴としている。
According to the present invention, each detector for detecting the states of a plurality of measurement points in an uninterruptible power supply and each analog / analog converter for converting the output value of the detector into a digital quantity A digital converter and a selector switch for selecting a measurement point to be displayed among the measurement points,
The analog of the measurement point selected by the selector switch
In a measurement display of an uninterruptible power supply equipped with an arithmetic circuit for calculating the output of a digital converter and outputting a display value, and a display for displaying the display value, the operation / stop of the uninterruptible power supply is performed. The status signal and the calibration signal for calibrating the display value are input to a calculation circuit that calculates the output of the analog-digital converter at the measurement location selected by the selector switch and outputs the display value, and the status signal Is obtained by operating the calibration signal when the
The output value of the digital converter and the analog signal obtained by operating the calibration signal when the state signal is in the operating state.
The display value of the arithmetic circuit is calibrated by the output value of the digital converter.

【0007】[0007]

【作用】この発明による無停電電源装置の計測表示器の
校正方法の動作原理について説明する。先ず、無停電電
源装置本体が停止状態の時に校正信号を動作させて得ら
れたアナログ・デジタル変換器の出力値をAO として演
算回路に記憶させる。この記憶値AO は前記アナログ・
デジタル変換器などのオフセット電圧による値であり、
表示器の表示値としては前記無停電電源装置本体が停止
状態であるから「零」を表示値とすべきである。
The operation principle of the calibration method for the measurement display of the uninterruptible power supply according to the present invention will be described. First, the output value of the analog-digital converter obtained by operating the calibration signal when the uninterruptible power supply main body is in a stopped state is stored in the arithmetic circuit as A O. This stored value A O is the analog
It is the value due to the offset voltage of the digital converter,
As the display value of the display, "zero" should be set as the display value because the main body of the uninterruptible power supply is stopped.

【0008】次に、無停電電源装置本体が運転状態の時
でその出力値が定格値の時に、校正信号を動作させて得
られたアナログ・デジタル変換器の出力値をBとして演
算回路に記憶させる。この記憶値Bによる表示器の表示
値は定格値とならなければならない。即ち、前記演算回
路にて、式(1)の演算を行い、
Next, when the output value of the uninterruptible power supply unit is in operation and the output value is the rated value, the output value of the analog-digital converter obtained by operating the calibration signal is stored as B in the arithmetic circuit. Let The display value of the display according to the stored value B must be the rated value. That is, the arithmetic circuit calculates the equation (1),

【0009】[0009]

【数1】 Ax =(定格値)/(B−AO ) …(1) 式(1)で得られたAx により、通常状態(運転状態)
で得られたアナログ・デジタル変換器の出力値をAとす
ると、式(2)で表される演算を前記演算回路で行う。
[Number 1] A x = (rated value) / the (B-A O) ... A x obtained in (1) (1), the normal state (operating state)
Assuming that the output value of the analog-digital converter obtained in step A is A, the operation represented by the equation (2) is performed by the operation circuit.

【0010】[0010]

【数2】 C= Ax ・(A−AO ) …(2) ここで、Cは表示器の表示値である。上述の式(1),
式(2)の演算を各計測箇所について実施すれば、この
発明の校正方法による校正作業は完了する。
## EQU00002 ## C = A.sub.x.multidot. (A- A.sub.O ) (2) where C is the display value of the display. Equation (1) above,
The calibration work by the calibration method of the present invention is completed when the calculation of the equation (2) is performed for each measurement point.

【0011】[0011]

【実施例】図1は、この発明の実施例を示す無停電電源
装置に内蔵された計測表示器の回路構成図であり、図2
と同一機能を有するものには同一符号を付している。図
1において、1は無停電電源装置本体、2は無停電電源
装置本体1の出力電圧を検出する電圧検出器、3は無停
電電源装置本体1の出力電流を検出する電流検出器、4
aは電圧検出器2の出力値をデジタル値に変換するアナ
ログ・デジタル変換器、4bは電流検出器3の出力値を
デジタル値に変換するアナログ・デジタル変換器、7は
計測箇所のうち表示する計測箇所を選択するセレクタス
イッチ、11はセレクタスイッチ7で選択された計測箇
所のアナログ・デジタル変換器(4a,4b,・・・)
の出力を演算して表示値を出力する演算回路、9は前記
表示値を表示する7セグメントの表示器などからなる表
示器、12は無停電電源装置本体1の運転・停止状態を
示す状態信号としての接点信号で、例えば、接点が閉じ
ている時は運転状態、また接点が開いている時は停止状
態を示す、13は校正信号を出力する押しボタンスイッ
チである。
1 is a circuit configuration diagram of a measurement display unit incorporated in an uninterruptible power supply according to an embodiment of the present invention.
Those having the same function as are denoted by the same reference numerals. In FIG. 1, 1 is an uninterruptible power supply main body, 2 is a voltage detector that detects an output voltage of the uninterruptible power supply main body 3, 3 is a current detector that detects an output current of the uninterruptible power supply main body 1, 4
a is an analog / digital converter for converting the output value of the voltage detector 2 into a digital value, 4b is an analog / digital converter for converting the output value of the current detector 3 into a digital value, and 7 is displayed among the measurement points. Selector switch for selecting a measurement point, 11 is an analog / digital converter (4a, 4b, ...) Of the measurement point selected by the selector switch 7.
An arithmetic circuit for calculating the output of the display device and outputting a display value, 9 is a display device including a 7-segment display device for displaying the display value, and 12 is a status signal indicating the operating / stopping state of the uninterruptible power supply main unit 1. Is a push-button switch that outputs a calibration signal. For example, when the contact is closed, it indicates the operating state, and when the contact is open, it indicates the stopped state.

【0012】図1において、表示器8の表示値を校正す
るには、セレクタスイッチ7で計測箇所として前記出力
電圧を選択して、無停電電源装置本体1が停止している
時、即ち状態信号12の接点が開いている状態で、校正
信号13の押しボタンスイッチを押してアナログ・デジ
タル変換器4aの出力値を演算回路11に記憶させ(こ
の記憶値は前記式(1)のAO に相当する)、次に無停
電電源装置本体1が運転している時、即ち状態信号12
の接点が閉じている状態で、無停電電源装置本体1の出
力電圧を定格値とし、校正信号13の押しボタンスイッ
チを押してアナログ・デジタル変換器4aの出力値を演
算回路11に記憶させ(この記憶値は前記式(1)のB
に相当する)、前記式(1),式(2)の演算を演算回
路11で行わせることで前記出力電圧の校正作業は完了
する。
In FIG. 1, in order to calibrate the display value on the display unit 8, the output voltage is selected as the measurement point by the selector switch 7 and the uninterruptible power supply main unit 1 is stopped, that is, the status signal. With the contact 12 open, the push-button switch of the calibration signal 13 is pressed to store the output value of the analog-digital converter 4a in the arithmetic circuit 11 (this stored value corresponds to A O in the above formula (1). Next, when the uninterruptible power supply main unit 1 is operating, that is, the status signal 12
With the contact of closed, the output voltage of the uninterruptible power supply main unit 1 is set to the rated value, and the push button switch of the calibration signal 13 is pressed to store the output value of the analog / digital converter 4a in the arithmetic circuit 11 (this The stored value is B in the above formula (1).
The calculation of the equations (1) and (2) is performed by the arithmetic circuit 11 to complete the calibration work of the output voltage.

【0013】また、出力電流に対しては、セレクタスイ
ッチ7で計測箇所として前記出力電流を選択して、上述
の出力電圧の時と同様の操作を行えばよい。この様な校
正方法のためには、予め用意された測定精度の高い標準
計器で測定しながら、前記無停電電源装置本体1の定格
値を出力させる必要があることは言うまでもない。
For the output current, the selector switch 7 may be used to select the output current as a measurement point, and the same operation as that for the above-mentioned output voltage may be performed. Needless to say, for such a calibration method, it is necessary to output the rated value of the uninterruptible power supply main unit 1 while measuring with a standard instrument prepared in advance with high measurement accuracy.

【0014】[0014]

【発明の効果】この発明によれば、従来の計測表示器の
校正方法においてアナログ・デジタル変換器に設けてい
たオフセット調整ボリュウムとゲイン調整ボリュウムの
2組のボリュウムを不要とすることができ、また、調整
員がその都度、表示値を監視しながら調整する必要がな
くなるため、計測表示器の校正作業を簡単に行うことが
できる。
According to the present invention, it is possible to eliminate the need for two sets of volumes, an offset adjustment volume and a gain adjustment volume, which are provided in the analog-digital converter in the conventional method for calibrating a measurement display. Since it is unnecessary for the coordinator to make adjustments while monitoring the display value each time, the calibration work of the measurement display device can be easily performed.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の実施例を示す無停電電源装置の計測
表示器の回路構成図
FIG. 1 is a circuit configuration diagram of a measurement display of an uninterruptible power supply showing an embodiment of the present invention.

【図2】従来例を示す無停電電源装置の計測表示器の回
路構成図
FIG. 2 is a circuit configuration diagram of a measurement display device of an uninterruptible power supply device showing a conventional example.

【符号の説明】[Explanation of symbols]

1 無停電電源装置本体 2 電圧検出器 3 電流検出器 4a,4b アナログ・デジタル変換器 5a,5b オフセット調整ボリュウム 6a,6b ゲイン調整ボリュウム 7,11 演算回路 8 セレクタスイッチ 9 表示器 12 状態信号 13 校正信号 1 uninterruptible power supply main unit 2 voltage detector 3 current detector 4a, 4b analog-digital converter 5a, 5b offset adjustment volume 6a, 6b gain adjustment volume 7, 11 arithmetic circuit 8 selector switch 9 indicator 12 status signal 13 calibration signal

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】無停電電源装置内の複数の計測箇所の状態
を検出するそれぞれの検出器と、該検出器の出力値をデ
ジタル量に変換するそれぞれのアナログ・デジタル変換
器と、前記計測箇所のうち表示する計測箇所を選択する
セレクタスイッチと、該セレクタスイッチで選択された
計測箇所のアナログ・デジタル変換器の出力を演算して
表示値を出力する演算回路と、前記表示値を表示する表
示器とを備えた無停電電源装置の計測表示器において、 前記無停電電源装置の運転・停止を示す状態信号と、前
記表示値を校正する校正信号とを前記セレクタスイッチ
で選択された計測箇所のアナログ・デジタル変換器の出
力を演算して表示値を出力する演算回路に入力し、前記
状態信号が停止状態の時に前記校正信号を動作させて得
られた前記アナログ・デジタル変換器の出力値と、前記
状態信号が運転状態の時に前記校正信号を動作させて得
られた前記アナログ・デジタル変換器の出力値とにより
前記演算回路の表示値を校正することを特徴とする無停
電電源装置の計測表示器の校正方法。
1. A detector for detecting the states of a plurality of measurement points in an uninterruptible power supply, an analog / digital converter for converting an output value of the detector into a digital value, and the measurement point. A selector switch that selects a measurement point to be displayed, an arithmetic circuit that calculates the output of the analog-digital converter at the measurement point selected by the selector switch and outputs a display value, and a display that displays the display value In a measurement display of an uninterruptible power supply equipped with a device, a status signal indicating the operation / stop of the uninterruptible power supply, and a calibration signal for calibrating the display value of the measurement location selected by the selector switch. The analog signal obtained by operating the calibration signal when the output of the analog / digital converter is input to an arithmetic circuit that outputs a display value and the status signal is in a stopped state. Calibrating the display value of the arithmetic circuit by the output value of the analog-digital converter and the output value of the analog-digital converter obtained by operating the calibration signal when the status signal is in the operating state. A calibration method for the measurement display of the uninterruptible power supply.
JP6033986A 1994-03-04 1994-03-04 Calibration method of measuring display device for uninterruptible power source apparatus Pending JPH07243873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6033986A JPH07243873A (en) 1994-03-04 1994-03-04 Calibration method of measuring display device for uninterruptible power source apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6033986A JPH07243873A (en) 1994-03-04 1994-03-04 Calibration method of measuring display device for uninterruptible power source apparatus

Publications (1)

Publication Number Publication Date
JPH07243873A true JPH07243873A (en) 1995-09-19

Family

ID=12401808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6033986A Pending JPH07243873A (en) 1994-03-04 1994-03-04 Calibration method of measuring display device for uninterruptible power source apparatus

Country Status (1)

Country Link
JP (1) JPH07243873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005099212A1 (en) * 2004-04-09 2005-10-20 Huawei Technologies Co., Ltd Gain measurement device for on line calibration and thereof method
JP2009254093A (en) * 2008-04-04 2009-10-29 Fuji Electric Systems Co Ltd Offset and gain adjusting method of voltage detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005099212A1 (en) * 2004-04-09 2005-10-20 Huawei Technologies Co., Ltd Gain measurement device for on line calibration and thereof method
JP2009254093A (en) * 2008-04-04 2009-10-29 Fuji Electric Systems Co Ltd Offset and gain adjusting method of voltage detector

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