JPH10122858A - Inclination measuring device - Google Patents
Inclination measuring deviceInfo
- Publication number
- JPH10122858A JPH10122858A JP8273860A JP27386096A JPH10122858A JP H10122858 A JPH10122858 A JP H10122858A JP 8273860 A JP8273860 A JP 8273860A JP 27386096 A JP27386096 A JP 27386096A JP H10122858 A JPH10122858 A JP H10122858A
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- container
- tilt
- reflected
- liquid
- 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
【0001】[0001]
【発明の属する技術分野】本発明は、物体の傾斜を測定
する傾斜測定装置にかかり、特に容器に収納した液体の
液面を利用した傾斜測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt measuring device for measuring the tilt of an object, and more particularly to a tilt measuring device utilizing the level of a liquid stored in a container.
【0002】[0002]
【従来の技術】従来から、容器内に液体を収納し、その
液面が常に水平方向に維持される性質を利用した傾斜測
定装置が種々提案されている。2. Description of the Related Art Hitherto, various tilt measuring apparatuses have been proposed which utilize a property that a liquid is stored in a container and the liquid level is always maintained in a horizontal direction.
【0003】例えば、特公平3−45322号公報等に
代表される液面での光学的な反射または屈折を利用した
ものがある。この傾斜測定装置は、容器に対して所定角
度の光を液面に照射し、容器の傾斜の変化に伴って液面
で発生する光の屈折や反射の変化を、光量や光のスポッ
ト位置、像位置の変化として検出して容器の傾斜を測定
するものである。[0003] For example, there is one that utilizes optical reflection or refraction on a liquid surface as represented by Japanese Patent Publication No. 3-45322. This inclination measuring device irradiates the liquid surface with light at a predetermined angle with respect to the container, and changes the refraction or reflection of light generated on the liquid surface with a change in the inclination of the container, the amount of light or the spot position of light, The inclination of the container is measured by detecting the change in the image position.
【0004】また、別の方法として、例えば実公昭56
−47525号公報等に記載されるような、静電容量を
利用したものがある。この方法では、密封した容器内に
液体と気体、または異なる液体を封入し、傾斜変化に伴
う静電容量の変化を電気的に検出することで容器の傾斜
を測定するものである。Further, as another method, for example,
As described in Japanese Patent No. 47475/1992, there is one using capacitance. In this method, a liquid and a gas, or different liquids are sealed in a sealed container, and the inclination of the container is measured by electrically detecting a change in capacitance caused by a change in inclination.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、上記し
た従来からの傾斜測定装置では、前者の光学的な手段を
利用する場合は発光素子や受光素子等の高価な部品を必
要とし測定装置全体が高価になりがちであり、後者の静
電容量の変化を利用した場合は検出される静電容量変化
の絶対量が小さいため非常に精密な測定を必要とし、温
度変化やノイズの影響を受けやすいという問題を有す
る。However, in the above-described conventional tilt measuring apparatus, when the former optical means is used, expensive parts such as a light emitting element and a light receiving element are required, and the entire measuring apparatus is expensive. When using the latter change in capacitance, the absolute value of the detected change in capacitance is small, so very precise measurement is required, and it is susceptible to temperature changes and noise. Have a problem.
【0006】そこで、本発明の目的は、上記の従来の傾
斜測定装置の問題点を解決した全く新規な傾斜測定装置
を提供することにある。Accordingly, an object of the present invention is to provide a completely new tilt measuring device which solves the above-mentioned problems of the conventional tilt measuring device.
【0007】更に、本発明の目的は、精度が高く、低コ
ストの新規な傾斜測定装置を提供することにある。It is a further object of the present invention to provide a new tilt measuring device with high accuracy and low cost.
【0008】[0008]
【課題を解決するための手段】上記の目的は、本発明に
よれば、短パルス信号を生成するパルス生成手段と、内
部に液体を収納する容器と、該容器内に所定の距離離間
して配置され、それぞれの上端が前記パルス生成手段に
接続され、それぞれの下端が前記液体内に浸され、垂直
方向に所定の長さを有する少なくとも複数のパルス信号
伝搬手段と、該パルス信号伝搬手段にそれぞれ接続さ
れ、該パルス信号伝搬手段の前記液体面の位置で反射す
る液面反射パルス信号を検出して、該液面反射パルス信
号の伝搬遅延時間の差に基づいて前記容器の傾斜を測定
する傾斜検出手段とを有する傾斜測定装置を提供するこ
とにより達成される。According to the present invention, there is provided a pulse generating means for generating a short pulse signal, a container for storing a liquid therein, and a predetermined distance within the container. Disposed, each upper end is connected to the pulse generation means, each lower end is immersed in the liquid, at least a plurality of pulse signal propagation means having a predetermined length in the vertical direction, and the pulse signal propagation means A liquid level reflection pulse signal reflected at the position of the liquid level of the pulse signal propagation means is connected, and the inclination of the container is measured based on a difference in propagation delay time of the liquid level reflection pulse signal. This is achieved by providing a tilt measuring device having tilt detecting means.
【0009】更に、具体的には、前記傾斜検出手段は、
前記パルス信号伝搬手段の上端部で反射する上端反射パ
ルス信号と前記液面反射パルス信号との間の時間差を検
出し、前記複数のパルス信号伝搬手段から得られる当該
時間差の関係から前記容器の傾斜を測定する。[0009] More specifically, the inclination detecting means includes:
Detecting a time difference between an upper end reflection pulse signal reflected at an upper end portion of the pulse signal propagation means and the liquid level reflection pulse signal, and tilting the container from the relationship of the time difference obtained from the plurality of pulse signal propagation means; Is measured.
【0010】更に、別の具体例としては、前記傾斜検出
手段は、前記パルス信号伝搬手段の下端部で反射する下
端反射パルス信号と前記液面反射パルス信号との間の時
間差を検出し、前記複数のパルス信号伝搬手段から得ら
れる当該時間差の関係から前記容器の傾斜を測定する。Further, as another specific example, the inclination detecting means detects a time difference between a lower end reflected pulse signal reflected at a lower end of the pulse signal transmitting means and the liquid level reflected pulse signal, The inclination of the container is measured from the relationship between the time differences obtained from the plurality of pulse signal propagation means.
【0011】超短パルス信号を液体に一部浸した伝搬手
段に伝搬させることで、その液面での反射パルス信号の
遅延時間を検出して、液面と容器の傾きを検出すること
ができる。By transmitting the ultrashort pulse signal to the propagation means partially immersed in the liquid, the delay time of the reflected pulse signal on the liquid surface can be detected, and the inclination between the liquid surface and the container can be detected. .
【0012】更に、本発明は、内部に液体を収納する被
測定容器に装着され該被測定容器の傾斜を測定する傾斜
測定装置において、短パルス信号を生成するパルス生成
手段と、該被測定容器内に所定の距離離間して配置さ
れ、それぞれの上端が前記パルス生成手段に接続され、
それぞれの下端が前記液体内に浸され、垂直方向に所定
の長さを有する少なくとも複数のパルス信号伝搬手段
と、該パルス信号伝搬手段にそれぞれ接続され、該パル
ス信号伝搬手段の前記液体面の位置で反射する液面反射
パルス信号を検出して、該液面反射パルス信号の伝搬遅
延時間の差に基づいて前記被測定容器の傾斜を測定する
傾斜検出手段とを有する傾斜測定装置を提供する。Further, the present invention relates to a tilt measuring device which is mounted on a container to be measured which contains a liquid therein and measures a tilt of the container to be measured, a pulse generating means for generating a short pulse signal, and the container to be measured. Are arranged at a predetermined distance from each other, and each upper end is connected to the pulse generation means,
At least a plurality of pulse signal propagation means each having a lower end immersed in the liquid and having a predetermined length in a vertical direction, respectively connected to the pulse signal propagation means, and a position of the liquid surface of the pulse signal propagation means. And an inclination detecting means for detecting an inclination of the container to be measured based on a difference in propagation delay time of the liquid surface reflection pulse signal.
【0013】この例では、石油を収納する巨大なタンク
等に本発明の傾斜測定装置を装着することによりタンク
の傾きを測定することができる。In this example, the inclination of the tank can be measured by mounting the inclination measuring apparatus of the present invention on a huge tank for storing oil.
【0014】[0014]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面に従って説明する。しかしながら、本発明の技術
的範囲がその実施の形態に限定されるものではない。Embodiments of the present invention will be described below with reference to the drawings. However, the technical scope of the present invention is not limited to the embodiment.
【0015】図1は、本発明の実施の形態例の全体構成
図である。1は超短パルス信号を生成するパルス信号生
成手段、2は水またはオイル等の誘電率が空気より大き
い液体4を収納した容器であり、その容器2内に少なく
とも2本のパルス信号伝搬手段3a,3bが所定の距離
離間してその下端が液体内に浸される様に固定されてい
る。従って、容器の傾きの変化に応じてパルス信号伝搬
手段3a,3bの液面位置が相対的に変化することにな
る。パルス信号伝搬手段3a,3bが2個の場合は、一
次元的な傾きが求められ、3個以上設けられる時は2次
元的な傾き(面の傾き)が求められる。FIG. 1 is an overall configuration diagram of an embodiment of the present invention. 1 is a pulse signal generating means for generating an ultrashort pulse signal, and 2 is a container containing a liquid 4 having a dielectric constant larger than air, such as water or oil, and at least two pulse signal transmitting means 3a in the container 2. , 3b are fixed so that the lower ends thereof are immersed in the liquid with a predetermined distance therebetween. Therefore, the liquid surface positions of the pulse signal propagation means 3a and 3b relatively change according to the change in the inclination of the container. When two pulse signal propagation means 3a and 3b are provided, a one-dimensional inclination is obtained, and when three or more pulse signal propagation means are provided, a two-dimensional inclination (surface inclination) is obtained.
【0016】このパルス信号伝搬手段3a、3bの上端
は、パルス信号生成手段1に接続され、生成された超短
パルス信号が供給される。更に、パルス信号伝搬手段3
a、3bの上端は、その中を伝搬して反射してくるパル
ス信号を検出するパルス信号受信部5a,5bにも接続
されている。そして、それぞれのパルス信号受信部5
a,5bは、更にパルス信号の時間差測定部6a,6b
にも接続されている。そして、時間差測定部6a,6b
での測定結果は、演算部7に供給され傾斜角度の情報に
変換され表示出力部8により外部出力される。The upper ends of the pulse signal propagation means 3a and 3b are connected to the pulse signal generation means 1 and supplied with the generated ultrashort pulse signal. Further, the pulse signal propagation means 3
The upper ends of a and 3b are also connected to pulse signal receiving units 5a and 5b for detecting pulse signals propagating and reflected therein. Then, each pulse signal receiving unit 5
a and 5b further include pulse signal time difference measuring units 6a and 6b.
Is also connected. Then, the time difference measuring units 6a and 6b
Is supplied to the calculation unit 7 and converted into information on the inclination angle, and is output from the display output unit 8 to the outside.
【0017】パルス生成手段1は、例えば200ピコs
ec程度のパルス幅を有するパルス信号を生成すること
ができ、それにより生成されたパルス信号による電磁波
がパルス信号伝搬手段3a,3bの長手方向に伝搬され
る。The pulse generating means 1 is, for example, 200 picoseconds.
A pulse signal having a pulse width of about ec can be generated, and an electromagnetic wave generated by the generated pulse signal is propagated in the longitudinal direction of the pulse signal propagation means 3a, 3b.
【0018】図2は、パルス信号伝搬手段3a,3b内
でのパルス信号の伝搬の状態を説明する為の図である。
パルス生成手段1から供給される超短パルス信号は、パ
ルス信号伝搬手段3aとの接続部である上端部31の所
で、インピーダンスの不整合による反射をする。上端部
31での接続構造を適宜選択することで、その上端での
反射パルス信号がパルス検出部5a側に伝搬する。FIG. 2 is a diagram for explaining the state of propagation of the pulse signal in the pulse signal propagation means 3a, 3b.
The ultrashort pulse signal supplied from the pulse generation means 1 reflects due to impedance mismatch at the upper end 31 which is a connection with the pulse signal propagation means 3a. By appropriately selecting the connection structure at the upper end portion 31, the reflected pulse signal at the upper end propagates to the pulse detector 5a side.
【0019】パルス信号伝搬手段3aは、パルス生成手
段1との接続導線とは異なるインピーダンスを有し、例
えば金属からなる導体の棒状のもので形成される。そし
て、その棒状の導体の空気と接触している上部と液体4
に浸されている下部とでは、空気より液体の方が誘電率
が高いことから異なるインピーダンスを有する。従っ
て、液面の位置32にてインピーダンス不整合が存在す
ることになり、その液面でもパルス信号の反射が発生す
る。そして、棒状の導体の下端部でも同様にパルス信号
は反射する。この様に、液面での反射パルス信号と下端
部での反射パルス信号とは、パルス検出部5aに供給さ
れる。The pulse signal propagation means 3a has an impedance different from that of the connection conductor to the pulse generation means 1, and is formed of, for example, a rod-shaped conductor made of metal. Then, the upper part of the rod-shaped conductor in contact with air and the liquid 4
The liquid and the lower part immersed in the liquid have different impedances because the liquid has a higher dielectric constant than the air. Therefore, impedance mismatch exists at the position 32 on the liquid surface, and reflection of the pulse signal also occurs on the liquid surface. The pulse signal is similarly reflected at the lower end of the rod-shaped conductor. Thus, the reflected pulse signal at the liquid surface and the reflected pulse signal at the lower end are supplied to the pulse detector 5a.
【0020】前述した通り、容器の傾斜の変化に応じて
パルス信号伝搬部3a,3b上の液面の位置が変化す
る。従って、液面での反射パルス信号が伝搬してくる時
間を検出することにより、容器の傾斜角度を正確に検出
することができる。As described above, the position of the liquid surface on the pulse signal propagation units 3a and 3b changes according to the change in the inclination of the container. Therefore, by detecting the time when the reflected pulse signal propagates on the liquid surface, the inclination angle of the container can be accurately detected.
【0021】図3は、その検出される反射パルス信号の
関係を示す図である。上記の様に、上端反射パルス信号
P31、液面反射パルス信号P32、そして下端反射パ
ルス信号P33は、パルス受信部5a,5bで検出され
る。図3中の(1)と(2)は、パルス信号伝搬手段3
a,3bが同じ長さの場合の例である。基本的には容器
内に同じ高さに設けられるが、多少高さが違っていて
も、信号処理の段階で調整することは可能である。FIG. 3 is a diagram showing the relationship between the detected reflected pulse signals. As described above, the upper-end reflection pulse signal P31, the liquid-surface reflection pulse signal P32, and the lower-end reflection pulse signal P33 are detected by the pulse receiving units 5a and 5b. (1) and (2) in FIG.
This is an example where a and 3b have the same length. Basically, they are provided at the same height in the container. However, even if the heights are slightly different, it is possible to adjust them at the signal processing stage.
【0022】さて、図3(1)、(2)に示した反射パ
ルスが検出されると、時間差測定部6a,6bにて、例
えば液面反射パルス信号P32と下端反射パルス信号P
33との間の遅延時間ta ,tb を測定し、その遅延時
間ta ,tb に従って演算部7にて容器に対する液面の
傾きを求める。When the reflected pulses shown in FIGS. 3A and 3B are detected, the time difference measuring sections 6a and 6b, for example, detect the liquid level reflected pulse signal P32 and the lower end reflected pulse signal P.
The delay times t a and t b between the container 33 and the container 33 are measured, and the calculation unit 7 calculates the inclination of the liquid level with respect to the container according to the delay times t a and t b .
【0023】パルス信号伝搬手段3a,3bは、上記の
様に金属をその材料とすると、それを伝搬する短パルス
信号の伝搬速度は、毎秒20万km程度になる。従って、
200ピコsecのパルス信号の波長は40mm程度で
あり、液面反射パルスP31と下端反射パルスP33と
の間の遅延時間は、棒状の導体の長さが0.2m程度と
すると、1nsec程度になる。従って、その程度の遅
延時間ta ,tb であれば、比較的正確に検出すること
ができる。When the metal is used as the material for the pulse signal propagation means 3a and 3b as described above, the propagation speed of the short pulse signal propagating through the metal is about 200,000 km per second. Therefore,
The wavelength of the pulse signal of 200 picosec is about 40 mm, and the delay time between the liquid surface reflection pulse P31 and the lower end reflection pulse P33 is about 1 nsec when the length of the rod-shaped conductor is about 0.2 m. . Therefore, if the delay times t a and t b are of such a level , the detection can be made relatively accurately.
【0024】図3(3)は、パルス信号伝搬手段3bが
3aより長い場合の例である。この場合は、例えば容器
を水平状態に保った時の遅延時間の関係を予め測定して
おき、演算部7内に校正データとして記憶させておくこ
とにより、測定時の傾きに応じた遅延時間ta ,tb ’
をもとにその傾きを求めることができる。FIG. 3C shows an example in which the pulse signal propagation means 3b is longer than 3a. In this case, for example, the relationship of the delay time when the container is kept in a horizontal state is measured in advance, and stored as calibration data in the arithmetic unit 7, so that the delay time t according to the inclination at the time of measurement is obtained. a , t b '
The inclination can be obtained based on
【0025】図3において、上端反射パルス信号P31
と液面反射パルス信号P32との遅延時間を求めて、両
者の遅延時間を比較することで傾きを求めることでも良
い。In FIG. 3, the upper end reflected pulse signal P31
It is also possible to calculate the delay time between the pulse signal P32 and the liquid surface reflection pulse signal P32, and compare the two delay times to obtain the slope.
【0026】容器の傾きに応じて、図3中の液面反射パ
ルス信号P32の位置が左右に移動するので、その移動
を遅延時間で検出し、それらの遅延時間を比較すること
で、当該傾きを求めることができる。The position of the liquid-surface reflection pulse signal P32 in FIG. 3 moves right and left in accordance with the inclination of the container. The movement is detected by a delay time, and the delay times are compared to obtain the inclination. Can be requested.
【0027】パルス生成手段1の回路は、例えばレーダ
ーに用いられる公知のものとすることができる。The circuit of the pulse generating means 1 can be a known circuit used for a radar, for example.
【0028】上記の実施の形態では、測定装置が液体を
収容した容器をその構成要件とする例で説明した。しか
しながら、例えば巨大なオイルタンクの如き容器の傾き
を測定する装置として利用することもできる。その場合
は、例えば、図1において、パルス信号伝搬手段3a,
3bが、容器の縁から一定の高さの内壁に装着され、そ
れらのパルス信号伝搬手段内を液面まで伝搬して反射し
てくる電磁波パルス信号を検出することで、タンクその
ものの傾きを検出することもできる。従って、その場合
は、測定装置にはオイルを収容したタンクは含まれな
い。In the above-described embodiment, an example has been described in which the measuring apparatus uses a container containing a liquid as a constituent element. However, it can also be used as a device for measuring the inclination of a container such as a huge oil tank. In that case, for example, in FIG.
3b is mounted on the inner wall at a fixed height from the edge of the container, and detects the tilt of the tank itself by detecting the electromagnetic wave pulse signal that propagates to the liquid surface and reflects in the pulse signal transmitting means. You can also. Therefore, in that case, the measuring device does not include a tank containing oil.
【0029】[0029]
【発明の効果】以上説明した通り、本発明によれば、発
光素子や受光素子を利用することもなく、また検出が困
難な静電容量を測定することもないので、低コストで精
度の高い傾斜測定を行うことができる。また、上記した
超短パルス発生手段は特に高コストの部品を使用するこ
となく実現できるので、全体としても低コスト化するこ
とができる。As described above, according to the present invention, there is no need to use a light-emitting element or a light-receiving element, and there is no need to measure a capacitance which is difficult to detect. A tilt measurement can be performed. Further, since the above-mentioned ultrashort pulse generation means can be realized without using particularly expensive components, the cost can be reduced as a whole.
【図1】本発明の実施の形態例の全体構成図である。FIG. 1 is an overall configuration diagram of an embodiment of the present invention.
【図2】パルス信号伝搬手段3a,3b内でのパルス信
号の伝搬の状態を説明する為の図である。FIG. 2 is a diagram for explaining a state of propagation of a pulse signal in pulse signal propagation means 3a and 3b.
【図3】検出される反射パルス信号の関係を示す図であ
る。FIG. 3 is a diagram illustrating a relationship between detected reflected pulse signals.
1 パルス信号生成手段 2 容器 3 パルス信号伝搬手段 4 液体 5 パルス検出部 6 遅延時間検出部 P31 上端反射パルス信号 P32 液面反射パルス信号 P33 下端反射パルス信号 DESCRIPTION OF SYMBOLS 1 Pulse signal generation means 2 Container 3 Pulse signal propagation means 4 Liquid 5 Pulse detection unit 6 Delay time detection unit P31 Upper reflection pulse signal P32 Liquid surface reflection pulse signal P33 Lower reflection pulse signal
Claims (4)
と、 内部に液体を収納する容器と、 該容器内に所定の距離離間して配置され、それぞれの上
端が前記パルス生成手段に接続され、それぞれの下端が
前記液体内に浸され、垂直方向に所定の長さを有する少
なくとも複数のパルス信号伝搬手段と、 該パルス信号伝搬手段にそれぞれ接続され、該パルス信
号伝搬手段の前記液体面の位置で反射する液面反射パル
ス信号を検出して、該液面反射パルス信号の伝搬遅延時
間の差に基づいて前記容器の傾斜を測定する傾斜検出手
段とを有する傾斜測定装置。1. A pulse generating means for generating a short pulse signal; a container for storing a liquid therein; a container disposed at a predetermined distance in the container, each upper end connected to the pulse generating means; At least a plurality of pulse signal propagation means each having a lower end immersed in the liquid and having a predetermined length in the vertical direction, respectively connected to the pulse signal propagation means, and a position of the liquid surface of the pulse signal propagation means And a tilt detecting means for detecting a liquid level reflection pulse signal reflected by the liquid crystal panel and measuring a tilt of the container based on a difference in propagation delay time of the liquid level reflection pulse signal.
れ該被測定容器の傾斜を測定する傾斜測定装置におい
て、 短パルス信号を生成するパルス生成手段と、 該被測定容器内に所定の距離離間して配置され、それぞ
れの上端が前記パルス生成手段に接続され、それぞれの
下端が前記液体内に浸され、垂直方向に所定の長さを有
する少なくとも複数のパルス信号伝搬手段と、 該パルス信号伝搬手段にそれぞれ接続され、該パルス信
号伝搬手段の前記液体面の位置で反射する液面反射パル
ス信号を検出して、該液面反射パルス信号の伝搬遅延時
間の差に基づいて前記被測定容器の傾斜を測定する傾斜
検出手段とを有する傾斜測定装置。2. A tilt measuring device which is mounted on a container to be measured for storing a liquid therein and measures a tilt of the container to be measured, comprising: pulse generating means for generating a short pulse signal; At least a plurality of pulse signal propagation means having a predetermined length in the vertical direction, wherein each of the plurality of pulse signal transmission means is disposed at a distance, and each upper end is connected to the pulse generation means, and each lower end is immersed in the liquid and has a predetermined length in the vertical direction; The pulse signal transmitting means is connected to each of the signal transmitting means, detects a liquid surface reflected pulse signal reflected at the position of the liquid surface of the pulse signal transmitting means, and detects the measured signal based on a difference in propagation delay time of the liquid surface reflected pulse signal. A tilt measuring device having a tilt detecting means for measuring the tilt of the container.
いて、 前記傾斜検出手段は、前記パルス信号伝搬手段の上端部
で反射する上端反射パルス信号と前記液面反射パルス信
号との間の時間差を検出し、前記複数のパルス信号伝搬
手段から得られる当該時間差の関係から前記容器の傾斜
を測定する傾斜測定装置。3. The tilt measuring device according to claim 1, wherein said tilt detecting means includes a time difference between an upper end reflected pulse signal reflected at an upper end of said pulse signal transmitting means and said liquid level reflected pulse signal. And a tilt measuring device for measuring the tilt of the container from the relationship of the time differences obtained from the plurality of pulse signal propagation means.
いて、 前記傾斜検出手段は、前記パルス信号伝搬手段の下端部
で反射する下端反射パルス信号と前記液面反射パルス信
号との間の時間差を検出し、前記複数のパルス信号伝搬
手段から得られる当該時間差の関係から前記容器の傾斜
を測定する傾斜測定装置。4. The tilt measuring device according to claim 1, wherein said tilt detecting means includes a time difference between a lower end reflected pulse signal reflected at a lower end of said pulse signal transmitting means and said liquid level reflected pulse signal. And a tilt measuring device for measuring the tilt of the container from the relationship of the time differences obtained from the plurality of pulse signal propagation means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8273860A JPH10122858A (en) | 1996-10-16 | 1996-10-16 | Inclination measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8273860A JPH10122858A (en) | 1996-10-16 | 1996-10-16 | Inclination measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10122858A true JPH10122858A (en) | 1998-05-15 |
Family
ID=17533570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8273860A Pending JPH10122858A (en) | 1996-10-16 | 1996-10-16 | Inclination measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10122858A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6697819B2 (en) | 2001-07-30 | 2004-02-24 | International Business Machines Corporation | Reusable database access component |
CN110986869A (en) * | 2019-12-11 | 2020-04-10 | 燕山大学 | Space attitude sensor based on fiber bragg grating and manufacturing and measuring methods |
CN114148845A (en) * | 2021-11-26 | 2022-03-08 | 河北华丰能源科技发展有限公司 | Level detection control system |
-
1996
- 1996-10-16 JP JP8273860A patent/JPH10122858A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6697819B2 (en) | 2001-07-30 | 2004-02-24 | International Business Machines Corporation | Reusable database access component |
CN110986869A (en) * | 2019-12-11 | 2020-04-10 | 燕山大学 | Space attitude sensor based on fiber bragg grating and manufacturing and measuring methods |
CN114148845A (en) * | 2021-11-26 | 2022-03-08 | 河北华丰能源科技发展有限公司 | Level detection control system |
CN114148845B (en) * | 2021-11-26 | 2023-09-12 | 河北华丰能源科技发展有限公司 | Level detection control system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5656774A (en) | Apparatus and method for sensing fluid level | |
US5651286A (en) | Microprocessor based apparatus and method for sensing fluid level | |
US5898308A (en) | Time-based method and device for determining the dielectric constant of a fluid | |
EP2722655B1 (en) | Guided wave radar interface measurement medium identification | |
US20130300595A1 (en) | Radar level gauge with mcu timing circuit | |
JP2003294517A (en) | Electronic multi-purpose material level sensor | |
CN101373134B (en) | Method for measuring thickness of wire-shaped narrowband filtering PSD thermal radiation plate | |
KR100891572B1 (en) | Level gauge | |
CN107515033A (en) | Point type liquid level sensor device and its measuring method based on optical frequency domain reflection technology | |
WO2003019121A8 (en) | Radar level-measuring device | |
JP2001082921A (en) | Laser range finder, and level gauge using it | |
JP2006189392A (en) | Absorption measuring apparatus | |
JP4522882B2 (en) | Absorption measuring device | |
JP2004093565A (en) | Filling level measuring apparatus | |
JPH10122858A (en) | Inclination measuring device | |
NL8003086A (en) | METHOD AND APPARATUS FOR LOCATING A LIGHT OR FLASH ARC IN A WAVE PIPE | |
CN107687935A (en) | A kind of scaling method of high reflective cavity mirror transmitance | |
US4870865A (en) | Device for testing formation of connection | |
KR101421137B1 (en) | Ultrasonic level meter | |
JP3732491B2 (en) | Ultrasonic flaw detection method and apparatus using longitudinal wave and transverse wave diffracted wave | |
US5936160A (en) | Method and apparatus for measuring sound velocity in liquid | |
RU2125715C1 (en) | Aid measuring level of liquid | |
KR100416497B1 (en) | Pattern Inspection System | |
JPH06249697A (en) | Ultrasonic liquid-level indicator | |
JP2001133319A (en) | Acoustic velocity measuring device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20041217 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20041228 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050510 |