JPH08110276A - Tension measuring apparatus containing correcting-operation expression - Google Patents
Tension measuring apparatus containing correcting-operation expressionInfo
- Publication number
- JPH08110276A JPH08110276A JP6268103A JP26810394A JPH08110276A JP H08110276 A JPH08110276 A JP H08110276A JP 6268103 A JP6268103 A JP 6268103A JP 26810394 A JP26810394 A JP 26810394A JP H08110276 A JPH08110276 A JP H08110276A
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- Prior art keywords
- measured
- tension
- correction
- calculation formula
- unit
- 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.)
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は補正演算式内蔵張力測定
装置に関し、特に測定対象物体の形状、構造、物性など
に適合するような複数の張力演算式を内蔵した張力測定
装置に関する。さらに本発明は、表示画面上での測定対
象物体の選択に対応して、振動の周波数や周期から張力
を演算する演算式および／またはその補正項を自動的に
選択するようにした補正演算式内蔵張力測定装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension calculation device having a built-in correction calculation formula, and more particularly to a tension measurement device having a plurality of tension calculation formulas adapted to the shape, structure and physical properties of an object to be measured. Further, according to the present invention, a calculation formula for calculating tension from a vibration frequency or cycle and / or a correction calculation formula for automatically selecting a correction term corresponding to selection of an object to be measured on a display screen. The present invention relates to a built-in tension measuring device.
【０００２】[0002]
【従来の技術】２点間に支持された弦、ワイヤ、棒また
は板状物体、ベルトなどの被測定物体の張力を測定する
方法としては、これら被測定物体を振動させたときの固
有振動周波数／周期を測定し、予め定められた演算式に
これらの値を代入して張力を演算することが広く知られ
ている。従来は張力の演算式としては、下記の式を用い
るのが普通である。 張力Ｔ＝４ρ・Ｓ2 ・ｆ2 ／９．８……（１） ここで、ρは被測定物体の１ｍ当りの重量（Ｋｇ／
ｍ）、Ｓはスパン長さ（ｍ）、ｆは固有振動数（Ｈｚ）
である。2. Description of the Related Art As a method of measuring the tension of an object to be measured such as a string, a wire, a rod or a plate-shaped object, a belt, etc. supported between two points, a natural vibration frequency when the object to be measured is vibrated. It is widely known that the tension is calculated by measuring / cycle and substituting these values into a predetermined arithmetic expression. Conventionally, the following formula is usually used as the formula for calculating the tension. Tension T = 4ρ · S 2 · f 2 /9.8 (1) where ρ is the weight per meter of the measured object (Kg /
m), S is span length (m), f is natural frequency (Hz)
Is.
【０００３】[0003]
【発明が解決しようとする課題】上記式（１）は、糸の
ように剛性のない物体の横振動に付いて成立するもので
ある。したがって、ベルトなどのように剛性を持つもの
では、その剛性のために固有振動数が高められるので、
式（１）によって求めた張力は実際の値よりも高く算出
されてしまうという問題がある。The above equation (1) is established for lateral vibration of a non-rigid object such as a thread. Therefore, with a material such as a belt that has rigidity, the natural frequency is increased due to that rigidity.
There is a problem that the tension obtained by the equation (1) is calculated higher than the actual value.
【０００４】本発明の目的は、ベルトや梁などの被測定
物体の特性すなわち形状、構造、物性などに適合した演
算式で、より正確な張力を算出できる補正演算式内蔵張
力測定装置を提供することにある。It is an object of the present invention to provide a correction calculation type built-in tension measuring device capable of calculating a more accurate tension with a calculation formula suitable for the characteristics, that is, the shape, structure, and physical properties of an object to be measured such as a belt or a beam. Especially.
【０００５】[0005]
【課題を解決するための手段】本発明の補正演算式内蔵
張力測定装置は、被測定物体の振動を検出して前記振動
を表わす信号を出力するセンサと、前記センサの出力信
号に基づいて被測定物体の固有振動周波数／周期を検出
する固有振動周波数／周期測定部と、被測定物体の特性
（形状、構造、物性など）に対応する複数の補正張力演
算式を予め記憶したメモリ部と、被測定物体の特性デ−
タの入力に応じて、前記複数の補正張力演算式から１つ
の張力演算式を選択する手段と、前記選択された張力演
算式に前記固有振動周波数／周期を代入して被測定物体
の張力を演算する張力演算部とを具備する。補正張力演
算式は、被測定物体の１ｍ長さ／１リブまたは単位幅当
りの重量Ｍ（gf/m）、ベルト幅（ｍｍ）またはリブ数
Ｗ、スパン長さＳ（ｍｍ）、固有振動数ｆ（Ｈｚ）、被
測定物体の特性（形状、構造、物性など）に依存して予
め定められた定数ａ、ｂなどを含む。被測定物体の特性
デ−タは、被測定物体の単位重量とスパン長の組合せ、
および予め決められた被測定物体のタイプのいずれかで
ある。ベルトタイプは、その構造、形状、材質、重量な
どをパラメ−タとして予め分類される。SUMMARY OF THE INVENTION A correction calculation type built-in tension measuring device of the present invention detects a vibration of an object to be measured and outputs a signal representing the vibration, and a sensor based on the output signal of the sensor. A natural vibration frequency / cycle measuring section for detecting the natural vibration frequency / cycle of the measurement object, and a memory section in which a plurality of correction tension calculation expressions corresponding to the characteristics (shape, structure, physical properties, etc.) of the measured object are stored in advance, Characteristic data of measured object
Means for selecting one tension calculation formula from the plurality of correction tension calculation formulas according to the input of the data, and the natural vibration frequency / cycle is substituted into the selected tension calculation formula to calculate the tension of the object to be measured. And a tension calculator for calculating. The formula for calculating the corrected tension is 1 m length / 1 rib of the object to be measured / weight M (gf / m) per unit width, belt width (mm) or number of ribs W, span length S (mm), natural frequency f (Hz) and constants a and b which are predetermined depending on the characteristics (shape, structure, physical properties, etc.) of the object to be measured are included. The characteristic data of the measured object is a combination of the unit weight of the measured object and the span length,
And one of the predetermined types of the measured object. The belt type is pre-classified with parameters such as its structure, shape, material and weight.
【０００６】[0006]
【作用】センサで測定した被測定物体の固有振動周波数
／周期を、被測定物体の特性デ−タに対応して予め準備
された補正張力演算式に代入し、被測定物体の張力を求
める。補正張力演算式は、被測定物体の予め決められた
タイプを順次表示画面上に現出させて選択したり、その
単位重量とスパン長の組合せの手動入力によって選択さ
れることができる。The natural vibration frequency / cycle of the object to be measured measured by the sensor is substituted into the correction tension calculation formula prepared in advance corresponding to the characteristic data of the object to be measured to obtain the tension of the object to be measured. The corrected tension calculation formula can be selected by sequentially displaying predetermined types of the object to be measured on the display screen, or by manually inputting a combination of the unit weight and the span length.
【０００７】[0007]
【実施例】以下に、図面を参照して、本発明を詳細に説
明する。図２は本発明に好適な被測定物体の固有振動数
・張力測定装置のブロック図である。軸間距離すなわち
スパンＳで配置されたプーリ１ａ，１ｂに架けられてい
る被測定ベルト２に対向してマイクロフォン３が配置さ
れている。マイクロフォン３で検出されたベルト２の振
動波形信号はフィルタ４に入力され、高周波ノイズ成分
が除去される。ノイズが除去された波形信号はコンパレ
ータ５に供給され、予定のしきい値に従って波形整形さ
れた後、矩形波信号として出力される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 2 is a block diagram of an apparatus for measuring natural frequency and tension of an object to be measured, which is suitable for the present invention. A microphone 3 is arranged so as to face the belt 2 to be measured, which is laid across pulleys 1a and 1b arranged with an axial distance, that is, a span S. The vibration waveform signal of the belt 2 detected by the microphone 3 is input to the filter 4 and the high frequency noise component is removed. The waveform signal from which the noise has been removed is supplied to the comparator 5, where the waveform is shaped according to a predetermined threshold value and then output as a rectangular wave signal.
【０００８】前記矩形波信号は微分回路６に入力され、
当該波形の立上がりおよび立下がりに応答するエッジ検
出信号が出力される。このエッジ検出信号のうち、例え
ば立上がりのエッジ検出信号が、遅延回路７、ラッチ８
およびフリップフロップ（Ｆ／Ｆ）９に入力される。カ
ウンタ１０は、図示しないクロック発振器から供給され
るクロックパルス（ＣＫ）を計数する。前記エッジ検出
信号に応答して、まず、ラッチ８がカウンタ１０の計数
値を取込む。一方、遅延回路７は前記エッジ検出信号を
所定時間遅らせてカウンタ１０のリセット端子に供給
し、カウンタ１０の計数値をリセットする。The rectangular wave signal is input to the differentiating circuit 6,
An edge detection signal is output in response to the rising and falling of the waveform. Of the edge detection signals, the rising edge detection signal is, for example, the delay circuit 7 and the latch 8.
And a flip-flop (F / F) 9. The counter 10 counts clock pulses (CK) supplied from a clock oscillator (not shown). In response to the edge detection signal, first, the latch 8 takes in the count value of the counter 10. On the other hand, the delay circuit 7 delays the edge detection signal for a predetermined time and supplies it to the reset terminal of the counter 10 to reset the count value of the counter 10.
【０００９】さらに、フリップフロップ９は前記エッジ
検出信号によってセットされる。マイクロコンピュータ
（マイコン）１１はフリップフロップ９のセットを検出
し、これによってカウンタ１０の値がラッチ８に保持さ
れたことを認識する。マイコン１１は、この認識結果に
基づいてラッチ８から計数値を取込み、マイコン１１内
のメモリに格納する。マイコン１１は計数値をラッチ８
から取込んだ後、クリア信号を出力してフリップフロッ
プ９をリセットする。こうして、マイコン１１内のメモ
リには、マイクロフォン３で検出された振動波形すなわ
ちカウンタ１０の計数値に基づいて得られた矩形波の１
サイクル毎の周期および／またはその逆数である周波数
が記憶される。Further, the flip-flop 9 is set by the edge detection signal. The microcomputer (microcomputer) 11 detects that the flip-flop 9 is set, and thereby recognizes that the value of the counter 10 is held in the latch 8. The microcomputer 11 fetches the count value from the latch 8 based on this recognition result and stores it in the memory in the microcomputer 11. The microcomputer 11 latches the count value 8
Then, the flip-flop 9 is reset by outputting a clear signal. In this way, the memory in the microcomputer 11 stores 1 of the rectangular wave obtained based on the vibration waveform detected by the microphone 3, that is, the count value of the counter 10.
The frequency for each cycle and / or its reciprocal is stored.
【００１０】以上の構成によって、図示しない加振手段
でベルト２に衝撃を加えて振動させ、このときのベルト
２の振動波形をマイクロフォン３で検出し、各サイクル
の周期／周波数を適当なメモリに記憶させる。ベルト２
の振動は、最初は衝撃波や高調波成分を含んだ不規則な
波形であるが、しだいに規則的な波形が連続するように
なる。この連続波形はプーリ１ａ，１ｂに架けられた当
該ベルト２の固有振動波形と解される。記憶された周期
／周波数および予め準備された演算式に基づいて被測定
ベルトの張力が演算される。With the above structure, the belt 2 is impacted and vibrated by the vibration means (not shown), the vibration waveform of the belt 2 at this time is detected by the microphone 3, and the cycle / frequency of each cycle is stored in an appropriate memory. Remember. Belt 2
The vibration of is initially an irregular waveform containing shock waves and harmonic components, but gradually the regular waveform becomes continuous. This continuous waveform can be understood as a natural vibration waveform of the belt 2 hung on the pulleys 1a and 1b. The tension of the belt to be measured is calculated based on the stored cycle / frequency and the previously prepared calculation formula.
【００１１】本発明による張力Ｔ0 の一般的な補正演算
式は、次の式（２）である。 Ｔ0 ＝４ａ・Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−ｂ・Ｍ2 ／Ｓ2 …（２） ここで、Ｍは被測定物体の１ｍ長さ／１リブまたは単位
幅当りの重量（gf/m）、Ｗはベルト幅（ｍｍ）またはリ
ブ数 、Ｓはスパン長さ（ｍｍ）、ｆは固有振動数（Ｈ
ｚ）、ａ、ｂはベルトタイプ（構造、形状、材質、重量
などをパラメ−タとして予め分類された）に依存する定
数である。A general correction calculation formula for the tension T 0 according to the present invention is the following formula (2). T 0 = 4a · M · W · S 2 · f 2 × 10 -9 /9.8-b · M 2 / S 2 ... (2) where, M is the measured object 1m length / 1 rib or Weight per unit width (gf / m), W is belt width (mm) or number of ribs, S is span length (mm), f is natural frequency (H
z), a, and b are constants that depend on the belt type (classified by parameters such as structure, shape, material, and weight as parameters).
【００１２】上記式（２）は次のような実験事実の確認
に基づいて定められたものである。The above formula (2) is determined based on the confirmation of the following experimental facts.
【００１３】ａ．一般に被測定物体の単位長当りの重量
が大きいほど、またスパン長が短くなるほど、図２の装
置による測定、演算で得られる張力値は実際値よりも大
きい方へ著しくずれるようになる。このため、（Ｍ2 ／
Ｓ2 ）を含む減算補正項を、式（１）の基本式に導入し
た。なお、式（１）のρが式（２）のＭ・Ｗに相当する
ことは明らかである。ｂ．前項ａにおけるずれの程度
は、Ｍ、Ｗ、Ｓで決まるベルトタイプに依存するから、
前記の減算補正項（Ｍ2 ／Ｓ2 ）に、ベルトタイプ毎に
実験的に求められた定数ｂを係数として乗算することと
した。本発明者の実験によれば、定数ｂは、Ｖベルトに
対して１０〜５０、Ｖリブドベルトに対して１００〜３
００、また歯付きベルトに対して１０００〜４０００程
度にしたとき、実測値（オートグラフによる）との相関
性が良く、好ましい測定結果が得られた。ｃ．被測定物
体の張力が小さいほど、演算で得られる張力値は実際値
に対して大きくなる方へずれる傾向が認められた（図３
参照）。このため、基本式の傾きを補正する補正係数ａ
を導入した。係数ａの値は１．０〜１．３が望ましい。A. In general, as the weight per unit length of the object to be measured becomes larger and the span length becomes shorter, the tension value obtained by the measurement and calculation by the apparatus of FIG. 2 shifts significantly to the larger value than the actual value. Therefore, (M 2 /
A subtraction correction term containing S 2 ) was introduced into the basic equation of equation (1). It is obvious that ρ in the equation (1) corresponds to M · W in the equation (2). b. Since the degree of deviation in the previous item a depends on the belt type determined by M, W, and S,
The subtraction correction term (M 2 / S 2 ) is multiplied by a constant b experimentally obtained for each belt type as a coefficient. According to the experiments by the present inventor, the constant b is 10 to 50 for the V-belt and 100 to 3 for the V-ribbed belt.
00, and about 1000 to 4000 with respect to the toothed belt, good correlation with the actual measurement value (according to the autograph) was obtained, and a preferable measurement result was obtained. c. It was recognized that the smaller the tension of the object to be measured, the larger the tension value obtained by the calculation relative to the actual value was (see FIG. 3).
reference). Therefore, the correction coefficient a for correcting the inclination of the basic equation
Was introduced. The value of the coefficient a is preferably 1.0 to 1.3.
【００１４】種々のタイプのＶベルト、歯付きベルトに
対して、本発明者が実験的に求めた補正演算式を次に例
示する。 （１）ＡタイプのＶベルト（ＪＩＳＫ6323） Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−４５Ｍ2 ／Ｓ2 …（３） （２）ＢタイプのＶベルト（ＪＩＳＫ6323） Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−４０Ｍ2 ／Ｓ2 …（４） （３）ＣタイプのＶベルト（ＪＩＳＫ6323） Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−２５Ｍ2 ／Ｓ2 …（５） （４）４ＰＫタイプのＶリブドベルト Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−１８０Ｍ2 ／Ｓ2 …（６） （５）８ＹＵタイプの歯付ベルト Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−２５００Ｍ2 ／Ｓ2 …（７ ） 図４は上記の各種ベルトに対する補正演算式とこれを用
いた張力測定例のデ−タである。同図には、本発明の効
果を明確にするための参考例として、補正前の従来の基
本演算式すなわち前記式（１）で得られた張力値をも併
記している。この図から、本発明によれば、より一層検
出誤差の少ない張力測定を実現できることが分かる。例
えば、Ｂタイプベルトを２００ｍｍのスパン、２１．８
Ｋｇｆの実張力で支持した場合、従来の基本式による張
力演算では４７．５Ｋｇｆと大きな誤差が出るが、本発
明によれば２２．２Ｋｇｆと極めて良い結果が得られ
る。Ｖリブドベルトの場合も、１２．２Ｋｇｆの実張力
に対して、従来の基本式では２０．０Ｋｇｆであるのに
対して、本発明の補正演算式では１２．１Ｋｇｆと正確
な測定が可能になる。The correction calculation formulas experimentally obtained by the present inventor for various types of V-belts and toothed belts are shown below. (1) A type V-belt (JISK6323) T 0 = 4M · W · S 2 · f 2 × 10 −9 /9.8-45M 2 / S 2 (3) (2) B type V-belt ( JISK6323) T 0 = 4M ・ W ・ S 2・ f 2 × 10 -9 /9.8-40M 2 / S 2 (4) (3) C type V-belt (JISK6323) T 0 = 4M ・ W ・ S 2 · f 2 × 10 -9 /9.8-25M 2 / S 2 ... (5) (4) 4PK type of V-ribbed belt T 0 = 4M · W · S 2 · f 2 × 10 -9 / 9. 8-180M 2 / S 2 ... (6 ) (5) 8YU type with the tooth belt T 0 = 4M · w · S 2 · f 2 × 10 -9 /9.8-2500M 2 / S 2 ... (7) FIG. 4 shows correction calculation formulas for the various belts described above and data of tension measurement examples using the same. In the same figure, as a reference example for clarifying the effect of the present invention, the conventional basic calculation formula before correction, that is, the tension value obtained by the formula (1) is also shown. From this figure, it is understood that according to the present invention, tension measurement with even smaller detection error can be realized. For example, a B type belt with a span of 200 mm, 21.8
When supported with an actual tension of Kgf, a large error of 47.5 Kgf occurs in the tension calculation by the conventional basic formula, but according to the present invention, an extremely good result of 22.2 Kgf is obtained. Even in the case of the V-ribbed belt, the actual tension of 12.2 Kgf is 20.0 Kgf in the conventional basic formula, while the correction calculation formula of the present invention makes it possible to measure 12.1 Kgf accurately.
【００１５】図１は本発明の１実施例のハード構成を示
すブロック図、図５は本発明の１実施例装置のパネル面
の平面図である。測定時には、まずタイプ入力部２４か
ら、被測定物体の単位重量（単位幅、１ｍ当りの重
量）、スパン長、幅など、あるいは被測定物体の形状、
寸法、質量などにをパラメ−タとして予め決められた基
準によるタイプ種別が手動入力される。Ｆ（周波数）領
域選択部３２は固有周波数の測定レンジを設定するため
のものであり、標準全域（例えば、１０〜６００Ｈ
ｚ）、低域（例えば、１０〜５０Ｈｚ）、および高域
（例えば、３００〜６００Ｈｚ）を選択できる。FIG. 1 is a block diagram showing a hardware configuration of one embodiment of the present invention, and FIG. 5 is a plan view of a panel surface of an apparatus of one embodiment of the present invention. At the time of measurement, first, from the type input unit 24, the unit weight (unit width, weight per 1 m) of the measured object, the span length, the width, etc., or the shape of the measured object,
The type classification is manually input according to a predetermined standard using parameters such as dimensions and mass as parameters. The F (frequency) area selection unit 32 is for setting the measurement range of the natural frequency, and is in the standard whole area (for example, 10 to 600H).
z), low range (for example, 10 to 50 Hz), and high range (for example, 300 to 600 Hz) can be selected.
【００１６】補正演算式選択部２５は、そのメモリ２５
ａに各種の補正演算式を予め格納しており、前記入力デ
−タにしたがって、被測定物体のタイプあるいはその形
状、物性、重量などに応じた最適の補正演算式を、予め
準備されたテ−ブルなどを参照して選択し、前記張力演
算部２３に転送する。その代わりに、各種の補正演算式
およびテ−ブルを張力演算部２３に格納しておいても良
いことはもちろんである。張力演算部２３は、前記固有
振動周波数／周期のデ−タおよび補正演算式に基づいて
張力を演算し、その結果を表示画面２６に表示する。The correction calculation formula selecting section 25 is provided in its memory 25.
Various correction calculation formulas are stored in advance in a, and an optimum correction calculation formula according to the type of the object to be measured or its shape, physical properties, weight, etc. is prepared according to the input data. -Reference is made to a bull or the like, and the selected item is transferred to the tension calculation unit 23. Instead, various correction calculation formulas and tables may be stored in the tension calculation unit 23, as a matter of course. The tension calculator 23 calculates the tension based on the data of the natural vibration frequency / cycle and the correction calculation formula, and displays the result on the display screen 26.
【００１７】補正演算式選択部２５の動作を、さらに図
６をも参照して説明する。図６は、被測定物体であるベ
ルトの単位重量（単位幅、１ｍ当りの重量）Ｍおよびス
パン長Ｓに基づいて補正演算式を選択する場合のフロー
チャートである。まずステップＳ１で被測定ベルトの単
位重量Ｍおよびスパン長Ｓが手動入力されると、ステッ
プＳ２では単位重量Ｍが３０を超えているかどうかを判
別し、超えておればステップＳ３へ、また超えていなけ
れば、対象はＶリブドタイプと判定され、ステップＳ６
へ進む。ステップＳ３では、単位重量Ｍが１００を超え
るか否かを判別し、超えていなければ式（３）を選択
し、超えておればステップＳ４に進む。ステップＳ４で
は、単位重量Ｍが２００を超えるか否かを判別し、超え
ていなければ式（４）を選択し、超えておればステップ
Ｓ５に進む。ステップＳ５ではさらに、単位重量Ｍが４
００を超えるか否かを判別し、超えていなければ式
（５）を選択し、超えておれば下記の式（８）を選択す
る。ステップＳ６では、スパンＳが３００を超えるか否
かを判別し、超えていなければ式（６）を選択し、超え
ておれば前記の式（１）を選択する。 Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−１５Ｍ2 ／Ｓ2 …（８） 以上のようにして、被測定ベルトの単位重量Ｍおよびス
パン長Ｓの組合せに応じて、予め記憶された複数の補正
演算式から１つが選択されて張力演算部２３へ転送され
る。このような補正演算式選択は、図５においては、テ
ンキ−部３１の重量およびスパン（ならびに幅）ボタン
を用いて被測定ベルトの単位重量Ｍおよびスパン長Ｓ
（ならびに幅Ｗ）を入力することによって行なうことが
できる。The operation of the correction arithmetic expression selecting section 25 will be described with reference to FIG. FIG. 6 is a flowchart in the case of selecting the correction calculation formula based on the unit weight (unit width, weight per 1 m) M and the span length S of the belt as the measured object. First, when the unit weight M and the span length S of the belt to be measured are manually input in step S1, it is determined in step S2 whether the unit weight M exceeds 30, and if the unit weight M exceeds 30, the process proceeds to step S3 and again. If not, the target is determined to be the V-ribbed type, and step S6 is performed.
Go to. In step S3, it is determined whether or not the unit weight M exceeds 100. If it does not exceed 100, the formula (3) is selected, and if it exceeds, the process proceeds to step S4. In step S4, it is determined whether or not the unit weight M exceeds 200. If it does not exceed 200, the formula (4) is selected, and if it exceeds, the process proceeds to step S5. Further, in step S5, the unit weight M is 4
Whether or not it exceeds 00 is discriminated. If it does not exceed 00, formula (5) is selected, and if it exceeds, formula (8) below is selected. In step S6, it is determined whether or not the span S exceeds 300, and if it does not exceed, the equation (6) is selected, and if it exceeds, the above equation (1) is selected. T 0 = 4M · W · S 2 · f 2 × 10 −9 /9.8-15M 2 / S 2 (8) As described above, the combination of the unit weight M and the span length S of the measured belt is determined. Accordingly, one is selected from a plurality of correction calculation formulas stored in advance and transferred to the tension calculation unit 23. Such correction calculation formula selection is performed by using the weight and span (and width) buttons of the numeric keypad 31 in FIG. 5 to select the unit weight M and span length S of the belt to be measured.
(And the width W).
【００１８】また図５のテンキ−部３１のタイプボタン
を押下してベルトタイプを表示画面２６につぎつぎに表
示させ、所望のタイプが表示されたときに選択ボタンを
操作することにより、所定の補正演算式を選択すること
もできる。この場合、ベルト（一般的には、被測定物
体）の単位重量、幅、スパン長、リブ数などを適当な数
値幅で区分し、各区分の組合せにしたがってベルトタイ
プが決定されているので、測定に当ってはこれらの値の
具体的数値を入力する必要がある。Further, by pressing the type button of the numeric keypad 31 of FIG. 5 to display the belt type one after another on the display screen 26, and operating the selection button when the desired type is displayed, a predetermined correction is made. It is also possible to select an arithmetic expression. In this case, the unit weight, width, span length, number of ribs, etc. of the belt (generally, the object to be measured) are divided into appropriate numerical widths, and the belt type is determined according to the combination of each division. It is necessary to enter the specific numerical values of these values for measurement.
【００１９】このために、所望のベルトタイプが表示さ
れたとき、同じ画面に被測定物体の単位重量、幅、スパ
ン長、リブ数などを入力するための画面を、例えば下記
のように表示し、？印箇所に順次カーソルを移動させて
入力を促すようにしても良い。さらに、補正演算式を併
せて表示することもできる。 測定対象： Ｃタイプベルト Ｔ0 ＝４Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−２５Ｍ
2 ／Ｓ2 Ｍ＝？Ｋｇ／ｃｍ2 、 Ｗ＝？ｍｍ、 Ｓ＝？ｍｍ さらに、補正演算式の選択のためのパラメ−タとして、
被測定ベルトの単位重量Ｍおよびスパン長Ｓの他に、ベ
ルト幅Ｗを用いても良い。For this reason, when the desired belt type is displayed, a screen for inputting the unit weight, width, span length, number of ribs, etc. of the object to be measured is displayed on the same screen, for example, as shown below. , ? The cursor may be sequentially moved to the marked position to prompt the input. Further, the correction calculation formula can be displayed together. Measurement target: C type belt T 0 = 4M ・ W ・ S 2・ f 2 × 10 -9 /9.8-25M
2 / S 2 M = ? Kg / cm 2 , W = ? mm, S = ? mm Furthermore, as a parameter for selecting the correction calculation formula,
The belt width W may be used in addition to the unit weight M and the span length S of the measured belt.
【００２０】以上のようにして測定対象物体（ベルト）
を特定し、これに応じた最適の補正演算式を選定した
後、適当な加振手段で測定対象物体を自由振動させると
同時に、図５に示した「測定」ボタンを押下すると、振
動測定が開始される。すなわち、センサ２１（例えば、
マイクロフォン）が前記振動を電気信号として検出し、
検出された信号は固有振動周波数／周期測定、記憶部２
２に供給される。固有振動周波数／周期測定、記憶部２
２では、図２に関して前述したようにして、被測定物体
の固有振動周波数／周期が測定、記憶されると共に、こ
れらデ−タは張力演算部２３にも転送される。周波数／
周期選択部２９は、パネル面での「周期」または「Ｈ
ｚ」ボタンの操作に応じて、転送されるデ−タが周波数
であるか、あるいは周期であるかを決定する。明らかな
ように、前記センサ２１、固有振動周波数／周期測定、
記憶部２２、張力演算部２３、張力演算部２３などは、
図２の構成で実現できる。張力演算が完了すると、求め
られた張力の値が表示画面２６上に表示される。もちろ
ん、周期、周波数、補正演算式、測定対象物体の入力デ
−タなどのうちの所望のものを同時に表示できることは
当然である。As described above, the object to be measured (belt)
After selecting the optimum correction calculation formula according to this, the vibration is measured by freely vibrating the object to be measured with an appropriate vibrating means and simultaneously pressing the “Measure” button shown in FIG. Be started. That is, the sensor 21 (for example,
Microphone) detects the vibration as an electric signal,
The detected signal is the natural vibration frequency / period measurement, storage unit 2
2 is supplied. Natural vibration frequency / cycle measurement, storage unit 2
2, the natural vibration frequency / cycle of the measured object is measured and stored as described above with reference to FIG. 2, and these data are also transferred to the tension calculation unit 23. frequency/
The cycle selection unit 29 uses the “cycle” or “H” on the panel surface.
Depending on the operation of the "z" button, it is determined whether the transferred data is a frequency or a cycle. Obviously, the sensor 21, natural frequency / period measurement,
The storage unit 22, the tension calculation unit 23, the tension calculation unit 23, etc.
It can be realized with the configuration of FIG. When the tension calculation is completed, the calculated tension value is displayed on the display screen 26. Of course, it is of course possible to simultaneously display desired ones of the period, the frequency, the correction calculation formula, the input data of the object to be measured, and the like.
【００２１】[0021]
【発明の効果】本発明では、被測定物体の形状、構造、
物性などに応じて予め経験的、実験的に定めた複数の補
正張力演算式を記憶しておき、測定の都度、被測定物体
に応じて最適の補正演算式を自動的に選択するようにし
たので、特別な知識、経験、熟練がなくても、誤差の少
ない正確な張力測定を容易に行なうことができる。According to the present invention, the shape, structure, and
Preliminarily empirically and experimentally determined correction tension calculation formulas are stored according to physical properties, etc., and the optimum correction calculation formula is automatically selected according to the measured object each time measurement is performed. Therefore, accurate tension measurement with little error can be easily performed without special knowledge, experience, or skill.
【図１】本発明の１実施例のハード構成を示すブロック
図である。FIG. 1 is a block diagram showing a hardware configuration of an embodiment of the present invention.
【図２】本発明に好適な被測定物体の固有振動数・張力
測定装置のブロック図である。FIG. 2 is a block diagram of an apparatus for measuring natural frequency and tension of an object to be measured, which is suitable for the present invention.
【図３】被測定物体の実張力と測定（演算）で得られた
張力とのずれを示す実験結果のグラフである。FIG. 3 is a graph of experimental results showing a deviation between the actual tension of the measured object and the tension obtained by measurement (calculation).
【図４】種々のベルトの実張力と測定（演算）で得られ
た張力との実験結果の表である。FIG. 4 is a table of experimental results of actual tensions of various belts and tensions obtained by measurement (calculation).
【図５】本発明の１実施例装置のパネル面の平面図であ
る。FIG. 5 is a plan view of a panel surface of the device according to the first embodiment of the present invention.
【図６】補正演算式選択の手順を示すフローチャートで
ある。FIG. 6 is a flowchart showing a procedure for selecting a correction calculation formula.
２１…センサ ２２…固有周波数／周期測定・記憶部
２３…張力演算部 ２４…タイプ入力部 ２５…補正演
算式選択部 ２６…表示画面 ２９…周波数／周期選択
部 ３２…周波数領域選択部21 ... Sensor 22 ... Natural frequency / period measurement / storage unit
23 ... Tension calculation unit 24 ... Type input unit 25 ... Correction calculation formula selection unit 26 ... Display screen 29 ... Frequency / cycle selection unit 32 ... Frequency domain selection unit
Claims (5)
表わす信号を出力するセンサと、 前記センサの出力信号に基づいて被測定物体の固有振動
周波数／周期を検出する固有振動周波数／周期測定部
と、 被測定物体の特性（形状、構造、物性など）に対応する
複数の補正張力演算式を予め記憶したメモリ部と、 被測定物体の特性デ−タの入力に応じて、前記複数の補
正張力演算式から１つの張力演算式を選択する手段と、 前記選択された張力演算式に前記固有振動周波数／周期
を代入して被測定物体の張力を演算する張力演算部とを
具備した補正演算式内蔵張力測定装置。1. A sensor for detecting a vibration of an object to be measured and outputting a signal representing the vibration, and a natural vibration frequency / cycle for detecting a natural vibration frequency / cycle of the object to be measured based on the output signal of the sensor. A measuring unit, a memory unit in which a plurality of correction tension calculation expressions corresponding to the characteristics (shape, structure, physical properties, etc.) of the object to be measured are stored in advance, And a tension calculation unit that calculates the tension of the object to be measured by substituting the natural vibration frequency / cycle into the selected tension calculation formula. Tension measuring device with built-in correction calculation formula.
おりである請求項１記載の補正演算式内蔵張力測定装
置。 Ｔ0 ＝４ａ・Ｍ・Ｗ・Ｓ2 ・ｆ2 ×１０-9／９．８−ｂ
・Ｍ2 ／Ｓ2 ここで、Ｍは被測定物体の１ｍ長さ／１リブまたは単位
幅当りの重量（gf/m）、 Ｗはベルト幅（ｍｍ）またはリブ数 、 Ｓはスパン長さ（ｍｍ）、 ｆは固有振動数（Ｈｚ）、 ａ、ｂは被測定物体の特性（形状、構造、物性など）に
依存して予め定められた定数。2. The tension calculation device with a built-in correction calculation formula according to claim 1, wherein the plurality of correction tension calculation formulas are as follows. T 0 = 4a · M · W · S 2 · f 2 × 10 −9 /9.8-b
・ M 2 / S 2 where M is the length of 1 m of the object to be measured / 1 rib or the weight per unit width (gf / m), W is the belt width (mm) or the number of ribs, and S is the span length ( mm), f is a natural frequency (Hz), and a and b are predetermined constants depending on the characteristics (shape, structure, physical properties, etc.) of the measured object.
被測定物体の単位重量とスパン長の組合せ、および予め
決められた被測定物体のタイプのいずれかである請求項
１または２記載の補正演算式内蔵張力測定装置。3. The input characteristic data of the measured object is:
The tension calculation device with a built-in correction calculation formula according to claim 1 or 2, which is one of a combination of a unit weight and a span length of the measured object and a predetermined type of the measured object.
づく補正演算式の選択は、パネル面上のボタン操作によ
って被測定物体のタイプを表示画面につぎつぎに表示さ
せ、所望のタイプが表示されたとき、張力演算を実行す
ることによって行なわれる請求項１ないし３のいずれか
に記載の補正演算式内蔵張力測定装置。4. The selection of the correction calculation formula based on a predetermined type of the measured object is performed by displaying the type of the measured object on the display screen one after another by operating a button on the panel surface. The built-in correction calculation type tension measuring device according to any one of claims 1 to 3, wherein the tension calculation device is executed by executing a tension calculation.
よび単位重量とスパン長のうちの少なくとも２つの組合
せに基づいて行なわれる請求項１ないし３のいずれかに
記載の補正演算式内蔵張力測定装置。5. The built-in correction calculation formula according to claim 1, wherein the correction calculation formula is selected based on a combination of at least two of the width and unit weight of the object to be measured and the span length. Tension measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268103A JP2741485B2 (en) | 1994-10-07 | 1994-10-07 | Compensation formula built-in tension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268103A JP2741485B2 (en) | 1994-10-07 | 1994-10-07 | Compensation formula built-in tension measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08110276A true JPH08110276A (en) | 1996-04-30 |
| JP2741485B2 JP2741485B2 (en) | 1998-04-15 |
Family
ID=17453943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6268103A Expired - Fee Related JP2741485B2 (en) | 1994-10-07 | 1994-10-07 | Compensation formula built-in tension measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741485B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5731528A (en) * | 1995-11-17 | 1998-03-24 | Mitsubishi Denki Kabushiki Kaisha | Rope tension measuring apparatus for use with an elevator |
| JP2008116344A (en) * | 2006-11-06 | 2008-05-22 | Ono Sokki Co Ltd | Signal analyzer, calculation program and calculation processing method |
| WO2014068888A1 (en) * | 2012-10-29 | 2014-05-08 | バンドー化学株式会社 | Belt tension calculating program, belt natural frequency calculating program, and method and device for same |
| WO2014091713A1 (en) * | 2012-12-12 | 2014-06-19 | バンドー化学株式会社 | Natural-frequency measurement device, belt-tension calculation program and method, and belt natural-frequency calculation program and method |
-
1994
- 1994-10-07 JP JP6268103A patent/JP2741485B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5731528A (en) * | 1995-11-17 | 1998-03-24 | Mitsubishi Denki Kabushiki Kaisha | Rope tension measuring apparatus for use with an elevator |
| JP2008116344A (en) * | 2006-11-06 | 2008-05-22 | Ono Sokki Co Ltd | Signal analyzer, calculation program and calculation processing method |
| CN104755894A (en) * | 2012-10-29 | 2015-07-01 | 阪东化学株式会社 | Belt tension calculating program, calculating method and calculating device, belt natural frequency calculating program, and method and device for same |
| JP2014112097A (en) * | 2012-10-29 | 2014-06-19 | Bando Chem Ind Ltd | Belt tension calculation program and belt natural frequency calculation program |
| JP5531169B1 (en) * | 2012-10-29 | 2014-06-25 | バンドー化学株式会社 | Belt tension calculation program, belt natural frequency calculation program, and method and apparatus thereof |
| WO2014068888A1 (en) * | 2012-10-29 | 2014-05-08 | バンドー化学株式会社 | Belt tension calculating program, belt natural frequency calculating program, and method and device for same |
| EP2913649A4 (en) * | 2012-10-29 | 2016-12-07 | Bando Chemical Ind | Belt tension calculating program, belt natural frequency calculating program, and method and device for same |
| TWI633288B (en) * | 2012-10-29 | 2018-08-21 | 阪東化學股份有限公司 | Calculation program for belt tension and calculation program for belt natural frequency, methods and apparatuses therefor |
| US10267696B2 (en) | 2012-10-29 | 2019-04-23 | Bando Chemical Industries, Ltd. | Belt tension calculating program, belt natural frequency calculating program, method and device for calculating belt tension, and method and device for calculating belt natural frequency |
| WO2014091713A1 (en) * | 2012-12-12 | 2014-06-19 | バンドー化学株式会社 | Natural-frequency measurement device, belt-tension calculation program and method, and belt natural-frequency calculation program and method |
| JPWO2014091713A1 (en) * | 2012-12-12 | 2017-01-05 | バンドー化学株式会社 | Natural frequency measurement device, belt tension calculation program and method, and belt natural frequency calculation program and method |
| JP2018009989A (en) * | 2012-12-12 | 2018-01-18 | バンドー化学株式会社 | Natural frequency measurement device, belt tension calculation program and method and belt natural frequency calculation program and method |
| TWI624647B (en) * | 2012-12-12 | 2018-05-21 | 阪東化學股份有限公司 | Natural frequency measurement device, belt tension calculation program and method, and belt natural frequency calculation program and method |
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|---|---|
| JP2741485B2 (en) | 1998-04-15 |
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