JPH0523694B2 - - Google Patents
Info
- Publication number
- JPH0523694B2 JPH0523694B2 JP62269443A JP26944387A JPH0523694B2 JP H0523694 B2 JPH0523694 B2 JP H0523694B2 JP 62269443 A JP62269443 A JP 62269443A JP 26944387 A JP26944387 A JP 26944387A JP H0523694 B2 JPH0523694 B2 JP H0523694B2
- Authority
- JP
- Japan
- Prior art keywords
- bucket
- level meter
- level
- measurement
- ultrasonic
- 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.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 238000012546 transfer Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 11
- 239000010802 sludge Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Description
【発明の詳細な説明】
「発明の目的」
（産業上の利用分野）
本発明は液体もしくは固体を連続移送装置によ
り移送する際の、個々の移送容器のレベル測定方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for measuring the level of individual transfer containers when liquids or solids are transferred by a continuous transfer device.
（従来の技術）
バケツトコンベヤーのように、同一形状の容器
を横に連結して、無端ベルトの如き形態で使用す
る液体もしくは固体の移送装置において、各バケ
ツト毎の移送する収容物量を正確に知るための方
法としては、静電容量式レベル計もしくは超音波
レベル計等が夫々単独で使用される連続測定方法
が一般的に採用されている。(Prior art) In a liquid or solid transfer device such as a bucket conveyor, in which containers of the same shape are connected horizontally and used in a form such as an endless belt, it is difficult to accurately determine the amount of material to be transferred in each bucket. As a method for determining this, a continuous measurement method in which a capacitive level meter, an ultrasonic level meter, or the like is used independently is generally adopted.
（発明が解決しようとする従来技術の問題点）
上記何れのタイプのレベル計を使用する場合で
も、一般的に連続的に測定されるから、各容器と
容器の接続部のレベルも連続して測定されるため
に、測定値をプログラムで補正するか、測定器の
設置位置を液面（もしくは固形物の表面）から離
して、即ち測定面積を大きくして液面と接続部を
同時に測定し、その平均値を基準として計算する
方法（感度を鈍くする方法）等が採用されてい
る。しかし、前者のプログラムで補正する方法は
複雑でコストが高く、後者の方法では測定精度が
低くなるという問題点がある。(Problems of the Prior Art to be Solved by the Invention) No matter which type of level meter is used, it is generally measured continuously, so the level at the connection between each container is also continuously measured. In order to be measured, either correct the measured value in the program or move the measuring device away from the liquid surface (or solid object surface), that is, increase the measurement area and measure the liquid level and the connection part at the same time. , a method of calculating based on the average value (a method of reducing sensitivity), etc. is adopted. However, the former method of correction using a program is complicated and expensive, and the latter method has the problem of low measurement accuracy.
本発明はこのような現状に鑑み創案されたもの
であつて、測定装置に多くの経費をかけることな
くしかもノイズの混入を排除して測定精度を向上
せしめる方法を提供することを目的とする。 The present invention was devised in view of the current situation, and it is an object of the present invention to provide a method for improving measurement accuracy by eliminating noise contamination without spending a lot of money on a measuring device.
「発明の構成」
（問題点を解決するための手段）
前述の目的を達成するために本発明者は、超音
波レベル計により走行するバケツト内収容物の高
さを測定するレベル測定方法にして、バケツトと
バケツトとの接続部を超音波レベル計の近傍に設
置した静電容量式レベル計で検知し、該接続部の
検知信号が発せられている間バケツト内収容物量
を検知する超音波レベル計のレベル測定を中止す
ることにより前記したバケツト接続部によるバケ
ツト内収容物量のレベル測定についての誤差発生
を防止するようにしたことを特徴とする連続移送
装置におけるレベル測定方法を茲に提案する。"Structure of the Invention" (Means for Solving the Problems) In order to achieve the above-mentioned object, the present inventor has developed a level measuring method for measuring the height of objects contained in a traveling bucket using an ultrasonic level meter. , an ultrasonic level that detects the connection between the buckets with a capacitance level meter installed near the ultrasonic level meter, and detects the amount of material in the bucket while the detection signal of the connection is being emitted. The present invention proposes a method for measuring a level in a continuous transfer device, which is characterized in that an error in level measurement of the amount of material contained in a bucket by the bucket connection part is prevented by stopping the level measurement of the meter.
（作用）
バケツトとバケツトとの接続部を該接続部を形
成する金属部材などに対し静電容量式レベル計で
検知し、該接続部の検知信号が得られる間バケツ
ト内収容物量を検知する超音波レベル計のレベル
測定を中止することにより超音波レベル計の測定
信号中バケツト接続部での誤差発生を防止する。(Function) The connection between the buckets is detected by a capacitance level meter against the metal member forming the connection, and the amount of material contained in the bucket is detected while the detection signal of the connection is obtained. By stopping the level measurement of the sonic level meter, it is possible to prevent errors from occurring at the bucket connection in the measurement signal of the ultrasonic level meter.
即ち上記のようにして超音波レベル計測定信号
中バケツト接続部でのレベル測定を中止すること
により超音波レベル計からはバケツト内収容物に
よるレベル測定信号のみが得られる。 That is, by stopping the level measurement at the bucket connection part in the ultrasonic level meter measurement signal as described above, only the level measurement signal due to the contents in the bucket can be obtained from the ultrasonic level meter.
従つて、連続して移送される原材料の移送の方
向に直交するように、静電容量式レベル計と超音
波レベルを移送設置の上方に横に並らべて設置し
ておけば、超音波レベル計は液面のレベル測定の
誤差要因となるバケツトの接続部を測定値として
取り込むことはなくなる。尚、この測定されなか
つた期間中の値をどのようにするかは、レベル測
定値のまとめ方によるが、(a)中断される前の値を
記録するようにする、(b)中断される前の測定値の
中で一番変動の少いゾーンの平均値とする、(c)測
定値のみ計算し、測定されなかつた時間は計算し
ない、等々、何れの方法を選択するかはバケツト
の形状、大きさにより適宜決めればよい。尚、超
音波レベル計はバケツトの接続部のレベルは測定
しないことになるから、視野を広くする必要はな
く、移送装置の障害にならない程度バケツト面に
近づけてセツトされることが可能であり測定精度
は向上する。接続部レベルの異状値を検出して超
音波レベル計へ測定中止の信号を送る機構の具体
的構成は、本発明の要旨ではないから、その機
構、設備はどのようなものを使用してもよい。 Therefore, if a capacitive level meter and an ultrasonic level are installed horizontally above the transfer installation so as to be orthogonal to the direction of transfer of raw materials that are continuously transferred, ultrasonic The level meter no longer takes in the measurement value from the connection part of the bucket, which can cause errors in measuring the liquid level. What to do with the values during the period when no measurements were taken depends on how the level measurement values are summarized, but (a) record the values before the interruption, or (b) record the values before the interruption. It is up to you which method to choose, such as (c) calculating only the measured value and not calculating the time when no measurements were taken, etc. It may be determined as appropriate depending on the shape and size. Note that the ultrasonic level meter does not measure the level at the connection part of the bucket, so there is no need to have a wide field of view, and it can be set as close to the bucket surface as possible without interfering with the transfer device. Accuracy improves. The specific structure of the mechanism that detects an abnormal value at the connection level and sends a signal to the ultrasonic level meter to stop measurement is not the gist of the present invention, so any mechanism or equipment may be used. good.
（実施例）
第１図は本発明方法を実施するためのレベル計
の設置位置を示す平面図であつて、多数のバケツ
ト１に脱水対象の汚泥２を充たして矢印の方向へ
移送する際、該移送装置に上方にこの移送方向と
直角に交わる線上に、超音波レベル計４と静電容
量式レベル計５を連続して並べて設置した。第２
図は第１図におけるＡ−Ａ断面図を示すもので、
金属板３および支持部材６で形成されるバケツト
の接続部が静電容量式レベル計５の真下を通過す
る際は汚泥２の表面より著しく高いので簡単にそ
の位置を検出し、同時に信号を超音波レベル計４
に送り、液面のレベル測定を中止し、該接合部の
通過を待つて再びレベル検出を行うよう自動制御
するシステムを採用した。(Example) Fig. 1 is a plan view showing the installation position of a level meter for carrying out the method of the present invention, and shows that when a large number of buckets 1 are filled with sludge 2 to be dehydrated and transferred in the direction of the arrow, An ultrasonic level meter 4 and a capacitive level meter 5 were installed in series above the transfer device on a line intersecting the transfer direction at right angles. Second
The figure shows a sectional view taken along line A-A in Figure 1.
When the connection part of the bucket formed by the metal plate 3 and the support member 6 passes directly under the capacitive level meter 5, it is significantly higher than the surface of the sludge 2, so its position can be easily detected and at the same time, the signal can be exceeded. Sound wave level meter 4
We adopted a system that automatically controls the liquid level by sending the liquid to a certain point, stopping the liquid level measurement, waiting for the liquid to pass through the joint, and then performing level detection again.
次に本発明方法の実施例を記載する。 Next, examples of the method of the present invention will be described.
１バケツトの容量（20）の連続的移送装置
（１時間当りの平均移送量5T／Ｈ）に静電容量式
レベル計並びに超音波レベル計をバケツトコンベ
ヤの上方位置に移送方向に直交して並べて設置し
て汚泥を連続して５トン／時移送した。この時の
超音波レベル計の測定精度は１バケツト当り±３
％以内の高精度であつた。しかしこれと比較して
行なつた従来の静電容量式レベル計を併用しない
で、超音波レベル計のみを液面から離して設けた
場合のレベルの測定精度は１バケツト当り±15％
の精度しか得られなかつた。 A continuous transfer device with a capacity of 1 bucket (20 kg) (average transfer rate per hour of 5 T /H) is equipped with a capacitance level meter and an ultrasonic level meter at a position above the bucket conveyor perpendicular to the transfer direction. They were installed side by side and sludge was continuously transferred at 5 tons/hour. The measurement accuracy of the ultrasonic level meter at this time is ±3 per bucket.
The accuracy was within %. However, compared to this, the level measurement accuracy was ±15% per bucket when only an ultrasonic level meter was installed at a distance from the liquid surface without using a conventional capacitive level meter.
I was able to obtain an accuracy of only .
尚、この実施例において測定されなかつた時間
はカツトして計算した。 In addition, in this example, the time that was not measured was cut out in the calculation.
「発明の効果」
以上詳細に説明したように、本発明方法により
連続して移送する液体もしくは固体の各バケツト
毎のレベル測定を行うときには、従来方法による
場合のように、連続的にレベルを測定してあとで
プログラムで補正するという複雑さもなく、又、
測定視野を拡げることによる測定精度の低下もな
くなり、従来より高い精度で移送量を測定するこ
とが可能となつた。設備的には、従来の超音波レ
ベル計に新らたに静電容量式レベル計を付加した
に止まり、大きな経済的負担とはならない。"Effects of the Invention" As explained in detail above, when the method of the present invention measures the level of each bucket of liquid or solid that is continuously transferred, the level is measured continuously as in the case of the conventional method. There is no need for the complexity of correcting it later with a program, and
The reduction in measurement accuracy caused by expanding the measurement field of view has also been eliminated, making it possible to measure the transfer amount with higher accuracy than before. In terms of equipment, it is just a new capacitive level meter added to the conventional ultrasonic level meter, so it does not pose a large economic burden.
第１図は本発明を実施するためのレベル計の設
置位置を示す平面図、第２図は第１図におけるＡ
−Ａ断面図を示すものである。
１：バケツト、２：汚泥、３：金属板、４：超
音波レベル計、５：静電容量式レベル計、６：支
持部材。
Fig. 1 is a plan view showing the installation position of a level meter for carrying out the present invention, and Fig. 2 is an A in Fig. 1.
-A sectional view is shown. 1: bucket, 2: sludge, 3: metal plate, 4: ultrasonic level meter, 5: capacitive level meter, 6: support member.
Claims (1)
容物の高さを測定するレベル測定方法にして、バ
ケツトとバケツトとの接続部を超音波レベル計の
近傍に設置した静電容量式レベル計で検知し、該
接続部の検知信号が発せられている間バケツト内
収容物量を検知する超音波レベル計のレベル測定
を中止することにより前記したバケツト接続部に
よるバケツト内収容物量のレベル測定についての
誤差発生を防止するようにしたことを特徴とする
連続移送装置におけるレベル測定方法。1 The level measurement method uses an ultrasonic level meter to measure the height of the contents in the moving bucket, and the connection between the buckets is detected with a capacitance level meter installed near the ultrasonic level meter. , by stopping the level measurement of the ultrasonic level meter that detects the amount of material contained in the bucket while the detection signal of the connection is being emitted, the occurrence of an error in the level measurement of the amount of material contained in the bucket by the bucket connection portion described above can be avoided. A level measuring method in a continuous transfer device, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62269443A JPH01112120A (en) | 1987-10-27 | 1987-10-27 | Level measuring method for continuous conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62269443A JPH01112120A (en) | 1987-10-27 | 1987-10-27 | Level measuring method for continuous conveyer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01112120A JPH01112120A (en) | 1989-04-28 |
| JPH0523694B2 true JPH0523694B2 (en) | 1993-04-05 |
Family
ID=17472506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62269443A Granted JPH01112120A (en) | 1987-10-27 | 1987-10-27 | Level measuring method for continuous conveyer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01112120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007504440A (en) * | 2003-08-28 | 2007-03-01 | ザ・ユニバーシティ・オブ・マンチェスター | Pressure wave piezoelectric sensor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10361640B4 (en) * | 2003-01-16 | 2013-02-07 | Binder & Co Ag | Measuring device for scoop wheels |
| WO2023021699A1 (en) * | 2021-08-20 | 2023-02-23 | Dmg森精機株式会社 | Coolant treatment device |
-
1987
- 1987-10-27 JP JP62269443A patent/JPH01112120A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007504440A (en) * | 2003-08-28 | 2007-03-01 | ザ・ユニバーシティ・オブ・マンチェスター | Pressure wave piezoelectric sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01112120A (en) | 1989-04-28 |
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