JPS61264219A - Method for measuring quantity of liquid in self-running measuring tank - Google Patents
Method for measuring quantity of liquid in self-running measuring tankInfo
- Publication number
- JPS61264219A JPS61264219A JP10408085A JP10408085A JPS61264219A JP S61264219 A JPS61264219 A JP S61264219A JP 10408085 A JP10408085 A JP 10408085A JP 10408085 A JP10408085 A JP 10408085A JP S61264219 A JPS61264219 A JP S61264219A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- liquid
- hmin
- hmax
- measuring
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は自走式計量タンク内の液量測定方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for measuring the amount of liquid in a self-propelled measuring tank.
自動車の燃料タンクその他移動するタンク内の液量の測
定は、タンクの振動、傾斜によって液面が動揺するため
必ずしも容易ではない。Measuring the amount of liquid in an automobile fuel tank or other moving tank is not always easy because the liquid level fluctuates due to vibration or tilting of the tank.
従来は、タンクの内部にフロートを設けたり、タンク内
壁面に取り付けた電気的若しくは電子的レベルゲージ等
によって測定していたが、上記タンクの振動、傾斜によ
り正確な測定は困難であった。Conventionally, measurements have been made by installing a float inside the tank or using an electrical or electronic level gauge attached to the inner wall of the tank, but accurate measurements have been difficult due to the vibrations and inclination of the tank.
本発明は上記の問題点を解決するためなされたものであ
り、その目的とするところは、自走式計量タンク内の液
量を常に正確に測定し得る方法を提供することにある。The present invention has been made to solve the above problems, and its purpose is to provide a method that can always accurately measure the amount of liquid in a self-propelled measuring tank.
本発明は、計量タンクの四隅にそれぞれレベルゲージを
設け、その4個のレベルゲージの指示値の最高値Hma
xと最低値Hminとに基づいて液量を算出することに
より上記目的を達成するものである。In the present invention, level gauges are provided at each of the four corners of a measuring tank, and the maximum value Hma of the indicated values of the four level gauges is
The above object is achieved by calculating the liquid amount based on x and the minimum value Hmin.
上記計量タンクが直方体タンクである場合には、直方体
タンクの底面の二辺の長さをA及びBとすれば、タンク
内の液量Qは、
Q−AxBx (Hmax +Hmin )÷2で求め
られる。If the measuring tank mentioned above is a rectangular parallelepiped tank, and if the lengths of the two sides of the bottom of the rectangular parallelepiped tank are A and B, then the liquid volume Q in the tank is calculated as Q-AxBx (Hmax + Hmin) ÷ 2. .
また、上記計量タンクが楕円タンクである場合には、タ
ンクの横幅W=W (Hmax +Hmin )、タン
クの長さL=L (Hmax +Hmin )とすれば
、タンク内の液i1Qは近似的に、
Q=Q (Hmax +Hmin )−q (H
min ) +Wx L x (Hmax −Hm
ln )÷2
で求められる。Furthermore, if the measuring tank is an elliptical tank, the width of the tank is W = W (Hmax + Hmin), and the length of the tank is L = L (Hmax + Hmin), then the liquid i1Q in the tank is approximately: Q=Q (Hmax +Hmin)-q (H
min ) +Wx L x (Hmax −Hm
It can be found by: ln)÷2.
上記の如き方法であると、液量Qが複数のレベルゲージ
の指示値の最高値Hmaxと最低値Hminとの函数と
して一義的に定まるので、タンクの傾斜等に基づく液面
の変動とは無関係にタンク内の液量が求められるもので
ある。With the above method, the liquid volume Q is uniquely determined as a function of the highest value Hmax and the lowest value Hmin of the indicated values of multiple level gauges, so it is independent of fluctuations in the liquid level due to the slope of the tank, etc. The amount of liquid in the tank is required.
以下、図面を参照しつ\本発明に係る方法を具体的に説
明する。Hereinafter, the method according to the present invention will be specifically explained with reference to the drawings.
第1図は本発明に係る方法を実施するための装置の一実
施例の概要を示す説明図、第2図はもう一つの実施例の
概要を示す説明図である。FIG. 1 is an explanatory diagram showing an outline of one embodiment of an apparatus for carrying out the method according to the present invention, and FIG. 2 is an explanatory diagram showing an outline of another embodiment.
第1図中、1は自動車その他の移動物体に搭載された直
方体の自走式計量タンク、2は上記タンク内に貯留され
た液体の液面、3a、 3b、 3c、 3dは上記タ
ンクの四隅の内壁面にそれぞれ取り付けられ、電気抵抗
や静電容量等の変化により液面の高さを検知するレベル
ゲージ、4は上記レベルゲージのそれぞれの指示値を比
較しそれらのうち最高のものと最低のものの値のみを出
力する比較器、5は上記最高値と最低値に基づき所定の
算定式に従ってタンク内の液量を算出する演算装置、6
は上記演算装置からの算出値を表示する表示器である。In Figure 1, 1 is a rectangular parallelepiped self-propelled measuring tank mounted on a car or other moving object, 2 is the liquid level stored in the tank, and 3a, 3b, 3c, and 3d are the four corners of the tank. Level gauges are installed on the inner walls of the walls and detect the height of the liquid level based on changes in electrical resistance and capacitance. 5 is a calculation device that calculates the amount of liquid in the tank according to a predetermined calculation formula based on the maximum and minimum values; 6
is a display device that displays the calculated value from the arithmetic device.
なお、上記直方体のタンク1の内面の長辺の長さはA1
短辺の長さはBとする。The length of the long side of the inner surface of the rectangular parallelepiped tank 1 is A1.
The length of the short side is B.
タンク1は自動車その他の移動物体に搭載されているた
め走行時には様々な方向へ傾斜し、その内部に収容され
ている液体の液面2は図に示す如くタンクの底面に対し
て傾斜した状態となる。そのため、タンクの四隅に於て
タンクの底面に対して垂直に取り付けられたレベルゲー
ジ3a、 3b、 3c、 3dのそれぞれの指示値は
異なった値となる。Since the tank 1 is mounted on a car or other moving object, it tilts in various directions when it is running, and the liquid level 2 of the liquid stored inside it is tilted with respect to the bottom of the tank as shown in the figure. Become. Therefore, the indicated values of the level gauges 3a, 3b, 3c, and 3d installed perpendicularly to the bottom of the tank at the four corners of the tank are different values.
而して、図に示した状態に於てはレベルゲージ3aが最
高のt旨示値を示し、レベルゲージ3dが最低の指示値
を示している。この最高の指示値をHmaxとし、最低
の指示値をHminとすれば、タンク内の液体の体積Q
は、
Q=AXBX (Hmax +Hmin )÷2として
求められることは数学的に容易に知られるところである
。この式は液面2がタンクの底面に対してどのように傾
斜していてもその方向及び勾配に関係な(成立する。Thus, in the state shown in the figure, the level gauge 3a shows the highest indicated value of t, and the level gauge 3d shows the lowest indicated value. If the highest indicated value is Hmax and the lowest indicated value is Hmin, then the volume of liquid in the tank is Q.
It is easily known mathematically that Q=AXBX (Hmax + Hmin)÷2. This equation holds true regardless of the direction and slope of the liquid level 2 relative to the bottom of the tank.
そこで、上記レベルゲージ3a、 3b、 3c、 3
dの出力のそれぞれを図では省略した増幅器等を介して
比較器4に入力せしめ、四つの指示値のうちから最高指
示値Hmaxと最低指示値Hminを選択せしめ、この
値を所定のコード信号として演算装置5に送って、この
二つの値から演算装置5に予め組み込まれたプログラム
により上記式Q=AXBX (Hmax + Hmin
)÷2に従って演算を行なわせれば、タンク1内の液
量Qが得られるものである。上記の如くして得られた値
を表示器6上に表示させる。Therefore, the level gauges 3a, 3b, 3c, 3
Each of the outputs of d is input to the comparator 4 via an amplifier or the like not shown in the figure, and the highest indicated value Hmax and the lowest indicated value Hmin are selected from among the four indicated values, and these values are used as a predetermined code signal. The above formula Q=AXBX (Hmax + Hmin
)÷2, the liquid amount Q in the tank 1 can be obtained. The value obtained as described above is displayed on the display 6.
第2図は楕円タンクに対して本発明に係る測定方法を適
用する場合の測定原理を示しており、図中7は軸直角断
面が楕円形の筒状の楕円タンク、8はタンク内に満たさ
れた液体の液面である。Fig. 2 shows the measurement principle when applying the measurement method according to the present invention to an elliptical tank. This is the liquid level of the liquid.
タンクの横幅W=W (Hmax +Hmin ) 、
タンクの長さL−L (Hmax 十Hmin )とし
、タンクが傾斜して液面8は図に示す如くタンクの下端
部Pからの高さが最低値Hminと最高値Hmaxとを
結ぶ平面上にあるとする。Tank width W=W (Hmax +Hmin),
The length of the tank is L-L (Hmax + Hmin), and the tank is tilted so that the liquid level 8 is on the plane connecting the lowest value Hmin and the highest value Hmax from the lower end P of the tank as shown in the figure. Suppose there is.
然るときは、Hmin以下の容積qは予め較正しておけ
ばq=q(Hmin)として知られる。In such a case, the volume q below Hmin is known as q=q(Hmin) if calibrated in advance.
一方、Hmin以上Hmaに以下の容積ΔQは、(Hm
ax −Hmln )があまり大きくなければΔQ=W
X L X (Hmax −Hmln )である。On the other hand, the volume ΔQ greater than or equal to Hmin and less than or equal to Hma is (Hm
ax − Hmln ) is not too large, ΔQ=W
X L X (Hmax - Hmln).
従って、楕円タンク7内の液量Qは、近似的に、Q=Q
(Hmax +Hmin )
= q (Hmin ) +Wx L X (Hmax
−Hmln )÷2
として得られるものである。従って、楕円タンク内に設
けられた複数のレベルゲージの各指示値の中から直方体
タンクの場合と同様にして最高指示値Hmaxと最低指
示値Hminを抽出し、これに基づきタンク内の液量を
タンクの傾斜に関係なく算出し得るものである。Therefore, the liquid volume Q in the elliptical tank 7 is approximately Q=Q
(Hmax +Hmin) = q (Hmin) +Wx L
-Hmln)÷2. Therefore, the highest indicated value Hmax and the lowest indicated value Hmin are extracted from the indicated values of the plurality of level gauges installed in the elliptical tank in the same manner as in the case of the rectangular parallelepiped tank, and based on these, the liquid volume in the tank is calculated. It can be calculated regardless of the slope of the tank.
他の特殊な形状のタンクに於ても、その内部に満たされ
た液体の体積は、これを決定するファクタとなるタンク
内の複数の位置に於ける液面の高さを変数とする関数と
して求められる場合が殆どであるから、当該複数の位置
にそれぞれレベルゲージを取り付け、それらの指示値か
ら所定の算定式に基づき、タンクの傾斜とは無関係にタ
ンク内の液量を算出し得るものである。Even in other specially shaped tanks, the volume of liquid filled inside the tank is a function of the variable height of the liquid level at multiple locations within the tank, which is the determining factor. Since this is required in most cases, it is possible to install level gauges at each of the multiple positions and calculate the amount of liquid in the tank based on a predetermined calculation formula from those readings, regardless of the slope of the tank. be.
本発明は叙上の如く構成されるので、本発明によるとき
は、タンクの傾斜等に基づく液面の変動とは無関係にタ
ンク内の液量を正確に求め得る液量測定方法が提供され
るものである。Since the present invention is configured as described above, the present invention provides a liquid level measuring method that can accurately determine the liquid level in a tank regardless of changes in the liquid level due to the inclination of the tank, etc. It is something.
なお、本発明に係る方法の構成は上記の実施例に限定さ
れるものでな(、レベルゲージの取付個数、取付位置及
び上記レベルゲージの指示値に基づく液量の算定式はタ
ンクの形状に従って変更されるものであり、本発明はそ
れらすべての変更実施例を包摂するものである。Note that the configuration of the method according to the present invention is not limited to the above embodiment (the formula for calculating the liquid volume based on the number of level gauges installed, the mounting position, and the indicated value of the level gauges can be changed according to the shape of the tank. The invention is intended to encompass all such modifications.
第1図は本発明に係る方法を実施するための装置の一実
施例の概要を示す説明図、第2図はもう一つの実施例の
概要を示す説明図である。FIG. 1 is an explanatory diagram showing an outline of one embodiment of an apparatus for carrying out the method according to the present invention, and FIG. 2 is an explanatory diagram showing an outline of another embodiment.
Claims (1)
その4個のレベルゲージの指示値の最高値Hmaxと最
低値Hminとに基づいて液量を算出することを特徴と
する自走式計量タンク内の液量測定方法。 2)上記計量タンクが直方体タンクであり、下記の式に
基づいて液量Qを算出する特許請求の範囲第1項記載の
自走式計量タンク内の液量測定方法。 Q=A×B×(Hmax+Hmin)÷2 (但し、A及びBは上記直方体タンクの底面の二辺の長
さである。) 3)上記計量タンクが楕円タンクであり、下記の近似式
に基づいて液量Qを算出する特許請求の範囲第1項記載
の自走式計量タンク内の液量測定方法。 Q=Q(Hmax+Hmin) =q(Hmin)+W×L×(Hmax−Hmin)÷
2 (但しW=W(Hmax+Hmin)・・・・・・タン
ク横幅L=L(Hmax+Hmin)・・・・・・タン
ク長さである。)[Claims] 1) Level gauges are provided at each of the four corners of the measuring tank,
A method for measuring the amount of liquid in a self-propelled measuring tank, characterized in that the amount of liquid is calculated based on the highest value Hmax and the lowest value Hmin of the indicated values of the four level gauges. 2) The method for measuring the amount of liquid in a self-propelled measuring tank according to claim 1, wherein the measuring tank is a rectangular parallelepiped tank, and the liquid amount Q is calculated based on the following formula. Q = A × B × (Hmax + Hmin) ÷ 2 (However, A and B are the lengths of the two sides of the bottom of the rectangular parallelepiped tank.) 3) The measuring tank is an elliptical tank, and based on the following approximate formula A method for measuring a liquid amount in a self-propelled measuring tank according to claim 1, wherein the liquid amount Q is calculated by: Q=Q(Hmax+Hmin) =q(Hmin)+W×L×(Hmax-Hmin)÷
2 (However, W=W(Hmax+Hmin)...tank width L=L(Hmax+Hmin)...tank length.)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10408085A JPS61264219A (en) | 1985-05-17 | 1985-05-17 | Method for measuring quantity of liquid in self-running measuring tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10408085A JPS61264219A (en) | 1985-05-17 | 1985-05-17 | Method for measuring quantity of liquid in self-running measuring tank |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61264219A true JPS61264219A (en) | 1986-11-22 |
Family
ID=14371162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10408085A Pending JPS61264219A (en) | 1985-05-17 | 1985-05-17 | Method for measuring quantity of liquid in self-running measuring tank |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61264219A (en) |
-
1985
- 1985-05-17 JP JP10408085A patent/JPS61264219A/en active Pending
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