JPS58160822A - Infrared water level meter - Google Patents
Infrared water level meterInfo
- Publication number
- JPS58160822A JPS58160822A JP4225282A JP4225282A JPS58160822A JP S58160822 A JPS58160822 A JP S58160822A JP 4225282 A JP4225282 A JP 4225282A JP 4225282 A JP4225282 A JP 4225282A JP S58160822 A JPS58160822 A JP S58160822A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- oscillator
- infrared
- liquid surface
- receiver
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000037303 wrinkles Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】 (al 発明の技術分野 本発明は赤外線を利用した赤外線水位針に関す。[Detailed description of the invention] (al Technical field of invention The present invention relates to an infrared water level needle that uses infrared rays.
(b) 従来技術と問題点
従来河川やダム等の水位を測定する水位針には多種類の
ものがあるが、フロート式のように測定に井筒が必要の
ため工事費用が多大であったり、逆に圧力式のように設
置は簡単であっても精度や・信頼性の低いものがある。(b) Conventional technology and problems There are many types of water level needles used to measure water levels in rivers, dams, etc.; On the other hand, there are pressure-type devices that are easy to install but have low accuracy and reliability.
第1図は従来例の井筒を用いたフロート式の水位針を示
す。同図においてダムlの水面2の水位は導水管3′に
経て井筒4の水面5と同位の水位を保っている0フロー
ト6は糸7を介して指針8を有する鍾9と平衡がとられ
、指針8で水位を示す目盛lOを読みとっている。この
ような構成では井筒の設置、導水管布設工事に多大の費
用がかかり、簡易で低コストの水位計が要望されている
。FIG. 1 shows a conventional float-type water level needle using a well. In the same figure, the water level of the water surface 2 of the dam 1 is maintained at the same level as the water surface 5 of the well 4 through the water conduit 3'.A float 6 is balanced with a plow 9 having a pointer 8 via a thread 7. , the scale lO indicating the water level is read with the pointer 8. In such a configuration, installation of the well and installation of water pipes requires a great deal of expense, and a simple and low-cost water level gauge is desired.
(C) 発明の目的
本発明は上記の問題点を解決するため、赤外線の液面の
入射角を利用して水位を測定する新規な水位計を提供す
ることを目的とする。(C) Object of the Invention In order to solve the above-mentioned problems, it is an object of the present invention to provide a new water level gauge that measures the water level using the angle of incidence of infrared rays on the liquid surface.
(d) 発明の構成
この目的は本発明によれば、赤外線を用いた液面の水位
の変化を測定して水位を測定する水位針において、液面
に対する入射角を一定の周期で連続的に変化させながら
該赤外線を赤外線発信器より発射し、該液面より反射さ
れた該赤外線を受信器にて受信したときの該入射角と該
赤外線発信器及び受信器間の距離から該液面水位を算出
するととにより達成される。(d) Structure of the Invention According to the present invention, in a water level needle that measures the water level by measuring changes in the water level on the liquid surface using infrared rays, the incident angle with respect to the liquid surface is continuously adjusted at a constant period. The infrared rays are emitted from an infrared emitter while changing the infrared rays, and when the infrared rays reflected from the liquid surface are received by a receiver, the liquid level can be determined from the incident angle and the distance between the infrared emitter and the receiver. This is achieved by calculating and.
(e) 発明の実施例
以下本発明を第2図の原理図、第3図、第4図の実施例
に基づいて説明する。(e) Embodiments of the Invention The present invention will be explained below based on the principle diagram shown in FIG. 2 and the embodiments shown in FIGS. 3 and 4.
第2図は赤外線を利用した水位計の原理を説明する図で
、同図において、赤外線発信器11は一定の周期で矢印
の方向に回転している。それ故、時間毎の赤外@11の
発射光12,13.14は液面15で反射され、液面1
5に対する赤外線の所定の入射角αl(入射光の液面0
点における法線16に対する角度)のとき赤外線受信器
17で受信される。FIG. 2 is a diagram explaining the principle of a water level gauge using infrared rays. In the figure, the infrared transmitter 11 rotates in the direction of the arrow at a constant cycle. Therefore, the infrared light beams 12, 13, and 14 emitted at each hour are reflected by the liquid surface 15, and
A predetermined incident angle αl of infrared rays with respect to 5 (liquid level 0 of the incident light
angle with respect to the normal 16 at the point), it is received by the infrared receiver 17.
図において赤外線発信器11と赤外線受信器(以下受信
器と記す)17の距離をLとし、赤外線発信器11と受
信器17を結ぶ位置が液面15に平行位置におかれると
き、前記距離りの中点18と液面1500点との距離R
は
R=−−tuα 但し α=90°−α1で示される。In the figure, the distance between the infrared transmitter 11 and the infrared receiver (hereinafter referred to as receiver) 17 is L, and when the position connecting the infrared transmitter 11 and receiver 17 is parallel to the liquid surface 15, the distance is L. Distance R between midpoint 18 and liquid level 1500 point
is represented by R=--tuα, where α=90°-α1.
ここであらかじめ、水底18までの距離りを測定してお
けば水位HF1
H=D−R=D−Ttuα ・−−−−−−−−−−−
(])より求められる。Here, if you measure the distance to the water bottom 18 in advance, the water level HF1 H=D-R=D-Ttuα ・−−−−−−−−−−−
It is determined from (]).
第3図は本発明に使用する赤外線発信器と該発信器より
発射される赤外線を一定周期で回転させる赤外線発射器
を示す。FIG. 3 shows an infrared transmitter used in the present invention and an infrared transmitter that rotates the infrared light emitted from the transmitter at a constant cycle.
第3図において赤外線発信器19は矢印の方向に発射さ
れている。該発信器19はシャフト20に固定され、該
シャフト20は軸受21で支持され、サーボモータ22
に固定され、矢印の方向に回転し、該発信器19を同一
方向に回転させている。これにより該発信器よりの赤外
IIIは第2図に示す如(12,13,14の角度を変
えて液面15 (ijll、2図に示す)で反射されて
いる。。In FIG. 3, the infrared transmitter 19 is emitted in the direction of the arrow. The transmitter 19 is fixed to a shaft 20, which is supported by a bearing 21, and which is supported by a servo motor 22.
is fixed to and rotates in the direction of the arrow, causing the transmitter 19 to rotate in the same direction. As a result, the infrared rays III from the transmitter are reflected at the liquid surface 15 (shown in FIG. 2) by changing the angles of 12, 13, and 14, as shown in FIG.
シャフト20の右端にシャフト200回転角を示すボテ
ンシ、メータ23が具備され該ボテンシ冒メータ23よ
り回転角に対応した電圧が端子24より出力される。The right end of the shaft 20 is provided with a potentiometer and a meter 23 that indicate the rotation angle of the shaft 200, and the potentiometer 23 outputs a voltage corresponding to the rotation angle from a terminal 24.
第4図はポテンシ璽メータの出力を赤外線受信器の出力
に対応して液面の水位を表示する(1)式を演算するI
水位演算回路を示す。同図において、前記赤外線発信器
19の回転角を示すボテンシ。Figure 4 shows how to calculate equation (1) for displaying the liquid level by corresponding the output of the potentiometer to the output of the infrared receiver.
The water level calculation circuit is shown. In the figure, a potentiometer indicates the rotation angle of the infrared transmitter 19.
メータ23の出力電圧は端子24より出力され、該出力
電圧はA/D変換器25にてデジタル量に変換され、演
算器26は該デジタル量を演算しく1)式に示す水位を
出力している。そして赤外線発信器19より発射された
赤外線は液面15(第2図に示す)で反射され受信器1
7で受光されその出力は前記演算器26に入力され演算
結果をう、チする。そのラッチ保持値が水位指示計2′
7に示される。The output voltage of the meter 23 is output from the terminal 24, the output voltage is converted into a digital quantity by the A/D converter 25, and the calculator 26 calculates the digital quantity and outputs the water level shown in equation 1). There is. The infrared rays emitted from the infrared transmitter 19 are reflected by the liquid surface 15 (shown in FIG. 2) and sent to the receiver 1.
7 receives the light, and its output is input to the arithmetic unit 26 to read the arithmetic result. The latch holding value is the water level indicator 2'
7.
(1)発明の効果
以上本発明によれば井筒、導水管等を布設せずに水位を
測定出来るので経済的に有利である。(1) Effects of the Invention According to the present invention, the water level can be measured without installing wells, water pipes, etc., which is economically advantageous.
第1図は従来例の井筒を使用するフロート式の水位計、
第2図は本発明の原理図、第3図は本発明の赤外線発射
を示す実施例、第4図は水位を計算する本発明の実施例
を示す。
図中、1はダム、2は水jiki(または准面)、3は
導水管、4は井筒、5は水面、6はフロート、7は糸、
8は指針、9Fi鍾、】0目盛、】1は赤外線、12,
13.14は赤外線発射光、15は液憤l(または水面
)、16は法線、17は赤外線受イ6器、18は中点、
19は赤外線発信器、20はシャフト、21は軸受、2
2はサーボモータ、23はボテフシ。メータ、24は端
子、25はA/D変俟器、26は演算器、27は指示計
を示す。
晃1 図
弗2 図
亮3 図Figure 1 shows a conventional float type water level gauge using a well.
FIG. 2 shows a principle diagram of the present invention, FIG. 3 shows an embodiment of the invention showing infrared radiation, and FIG. 4 shows an embodiment of the invention for calculating water level. In the figure, 1 is the dam, 2 is the water pipe (or quasi-surface), 3 is the water pipe, 4 is the well, 5 is the water surface, 6 is the float, 7 is the thread,
8 is the pointer, 9Fi dial, ]0 scale, ]1 is the infrared rays, 12,
13.14 is the infrared light emitted, 15 is the liquid (or water surface), 16 is the normal, 17 is the 6 infrared receivers, 18 is the midpoint,
19 is an infrared transmitter, 20 is a shaft, 21 is a bearing, 2
2 is a servo motor, and 23 is a lid. 24 is a terminal, 25 is an A/D converter, 26 is a calculator, and 27 is an indicator. Akira 1 Figure 2 Figure Ryo 3 Figure
Claims (1)
する水位計において、液面に対する入射角を一定の周期
で連続的に変化させながら該赤外線を赤外線発信器より
発射し、該液面より反射された皺赤外線を受信器にて受
信したときの絞入射角と該赤外線発信器及び受信器間の
距離から該液面水位を算出することを特徴とした赤外線
水位計。In a water level meter that measures the water level by measuring changes in the water level using infrared rays, the infrared rays are emitted from an infrared transmitter while continuously changing the angle of incidence on the liquid surface at a fixed period, and An infrared water level gauge, characterized in that the liquid level is calculated from an angle of incidence when a receiver receives wrinkle infrared rays reflected from a surface and a distance between the infrared transmitter and the receiver.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4225282A JPS58160822A (en) | 1982-03-17 | 1982-03-17 | Infrared water level meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4225282A JPS58160822A (en) | 1982-03-17 | 1982-03-17 | Infrared water level meter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58160822A true JPS58160822A (en) | 1983-09-24 |
Family
ID=12630828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4225282A Pending JPS58160822A (en) | 1982-03-17 | 1982-03-17 | Infrared water level meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58160822A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03154827A (en) * | 1989-11-13 | 1991-07-02 | Sumitomo Heavy Ind Ltd | Liquid gage |
US9138091B2 (en) | 2009-07-08 | 2015-09-22 | Koninklijke Philips N.V. | Apparatuses and methods for managing liquid volume in a container |
CN110017820A (en) * | 2019-03-02 | 2019-07-16 | 泉州市铺梦者工业设计有限公司 | A kind of building inclination monitoring adjustable infrared level meter of warning light |
-
1982
- 1982-03-17 JP JP4225282A patent/JPS58160822A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03154827A (en) * | 1989-11-13 | 1991-07-02 | Sumitomo Heavy Ind Ltd | Liquid gage |
US9138091B2 (en) | 2009-07-08 | 2015-09-22 | Koninklijke Philips N.V. | Apparatuses and methods for managing liquid volume in a container |
CN110017820A (en) * | 2019-03-02 | 2019-07-16 | 泉州市铺梦者工业设计有限公司 | A kind of building inclination monitoring adjustable infrared level meter of warning light |
CN110017820B (en) * | 2019-03-02 | 2021-03-16 | 惠州市建设集团工程建设监理有限公司 | Building slope monitoring warning is with infrared spirit level of light adjustable |
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