JPS60169720A - Position detector for accommodating material in tank - Google Patents
Position detector for accommodating material in tankInfo
- Publication number
- JPS60169720A JPS60169720A JP2646284A JP2646284A JPS60169720A JP S60169720 A JPS60169720 A JP S60169720A JP 2646284 A JP2646284 A JP 2646284A JP 2646284 A JP2646284 A JP 2646284A JP S60169720 A JPS60169720 A JP S60169720A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- tank
- level
- light emitting
- detecting
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007787 solid Substances 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
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
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】
〔発明の技術分野〕
この発明は、タンク内に収納する液体等の収納物位置を
検出するためのタンク内の収納物位置検出器に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an object position detector in a tank for detecting the position of an object stored in a tank, such as a liquid.
従来この種のタンク内の収納物位置検出器としては、第
１図に示すものがあった。第１図は従来のタンク内の収
納物位置検出器を示す概略構成図である。図において、
１は電極であシ、この電極ＩＵ、Ｈレベル（高レベル）
用の電極ｉａ、Ｌレベ／Ｌ−（低レベル）用の電極１ｂ
及びＣＯＭ（共通）電極ＩＣとから構成される。２ａ、
２ｂは液位検出リレー、３は☆液位検出リレー２ａ 、
２ｂと電極１とを接続するケーブル、４は測定対象とな
る液体、５は液体４を収納するタンクである。2. Description of the Related Art Conventionally, there has been a detector for the position of objects stored in a tank of this type, as shown in FIG. FIG. 1 is a schematic diagram showing a conventional position detector for stored items in a tank. In the figure,
1 is an electrode, this electrode IU, H level (high level)
electrode ia, electrode 1b for L level/L- (low level)
and a COM (common) electrode IC. 2a,
2b is a liquid level detection relay, 3 is ☆ liquid level detection relay 2a,
A cable connects 2b and the electrode 1, 4 is a liquid to be measured, and 5 is a tank that stores the liquid 4.
次に、上記第１図に示す従来のタンク内の収納物位置検
出器の動作について説明する。今、タンク５内に収納し
た液体４が、第１図に示す様に、Ｈレベル用の電極１ａ
とＬレベル用の電極１ｂとの間にあるとすると、Ｌレベ
ル用の電極１ｂとＣＯＭ電極ＩＣ間に電流が流れて、液
位検出リレー２ａは動作する。一方、Ｈレベル用の電極
１ａとＣＯＭ電極ＩＣ間には液体４が満たされていない
ので、上記Ｈレベル用の電極１ａとＣＯＭ電極ＩＣ間に
は電流が流れず、液位検出リレー２ｂは動作しない。し
たがって、タンク５内の液体４の液位は、Ｌレベル用の
電極１ｂとＨレベル用の電極１８間にあることを検知す
ることができる。この様に、タンク５内に収納した液体
４のレベル位置を検出するのに電極ｌを用いた場合に、
この電俸１ｔｌ−構成するＨレベル用の電極１ａ、ｌレ
ベル用の電極１ｂ及び００Ｍ電極１ｃの各々の間が導通
しているか、導通していないかによって液体４のレベル
位置を検出している。Next, the operation of the conventional in-tank position detector shown in FIG. 1 will be explained. Now, as shown in FIG. 1, the liquid 4 stored in the tank 5 is connected to the electrode 1a for H level.
and the L level electrode 1b, a current flows between the L level electrode 1b and the COM electrode IC, and the liquid level detection relay 2a operates. On the other hand, since the liquid 4 is not filled between the H level electrode 1a and the COM electrode IC, no current flows between the H level electrode 1a and the COM electrode IC, and the liquid level detection relay 2b is activated. do not. Therefore, it is possible to detect that the liquid level of the liquid 4 in the tank 5 is between the L level electrode 1b and the H level electrode 18. In this way, when the electrode l is used to detect the level position of the liquid 4 stored in the tank 5,
The level position of the liquid 4 is detected depending on whether there is continuity between each of the H level electrode 1a, L level electrode 1b, and 00M electrode 1c that constitute this electric current 1tl. .
従来のタンク内の収納物位置検出器は以上の様に構成さ
れているので、電極１を構成する各Ｈレベル用の電極１
ａ、Ｌレベル用の電極１ｂ及び００Ｍ電極１ｃ等は、測
定対象となる液体４に接触する構造を有しているため、
液体４の種類によっては電極１が腐食して動作不良を起
したり、また、各電極１ａ〜ｌｃ間に不必要な微弱電流
が流れるという欠点があった。さらに、液体４のレベル
位置の設定には、通常、電極棒を所定長さに切断して形
成した電極１を用いているため、一度液体４のレベル位
置の設定を行うと、電極１の長くなる方向には、液体４
のレベル位置の設定を行うことができないなどの欠点が
あった。Since the conventional storage object position detector in a tank is configured as described above, the electrode 1 for each H level constituting the electrode 1 is
Since the electrodes 1b and 00M electrode 1c for level a and L have a structure that comes into contact with the liquid 4 to be measured,
Depending on the type of liquid 4, the electrodes 1 may corrode and malfunction may occur, and unnecessary weak currents may flow between the electrodes 1a to lc. Furthermore, to set the level position of the liquid 4, the electrode 1, which is usually formed by cutting an electrode rod into a predetermined length, is used. In the direction of liquid 4
There were drawbacks such as the inability to set the level position of the
この発明は、上記の様な従来のものの欠点を改善する目
的でなされたもので、タンク内に収納する液体等の収納
物位置を検出する位置検出部に、発光ダイオード等の発
光部と、この発光部からの光ヲ受ける様に、対向して配
設されるホトトランジスタ等の受光部とを設けて成る構
成を有し・タンク内に収納する収納物のレベル位置を、
簡単な構成によシ、正確に、かつ安定して検出できる様
にしたタンク内の収納物位置検出器を提供するものであ
る。This invention was made with the aim of improving the drawbacks of the conventional products as described above, and includes a light emitting part such as a light emitting diode and a light emitting part such as a light emitting diode in a position detection part that detects the position of stored items such as liquid stored in a tank. It has a structure in which a light receiving part such as a phototransistor is arranged facing each other so as to receive the light from the light emitting part.
The object of the present invention is to provide a position detector for stored items in a tank that has a simple configuration and can detect accurately and stably.
以下、この発明の実施例を図について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図はこの発明の一実施例であるタンク内の収納物位
置検出器を示す概略構成図、第３図は、第２図のタンク
内の収納物位置検出器における動作態様を説明するため
の原理図、第４図は、第２図のタンク内の収納物位置検
出器における要部を詳細に示す斜視図で、上記各図とも
、第１図と同一部分は同一符号を用いて表示してアシ、
その詳細な説明は省略する。上記各図において、７は発
光ダイオード等の発光部、８はホトトランジスタ等の受
光部、９はタンク５内に収納する液体４のレベル位置を
検出する位置検出部をなす液位検出部でｉｂ、との液位
検出部９には発光部７と、この発光部からの光を受ける
様に、対向して配設される受光部８とが設けられている
。１１は光照射部分、１２は受光部分であシ、この光照
射部分１１及び受光部分１２は、それぞれ元の透過性を
良くするために、液位検出部９の一部を透明にすること
によって形成されている。そして、発光部７は光照射部
分１１に取り付けられ、受光部８は受光部分１２に取シ
付けられる。１０は発光部７と受光部８を接続する接続
金具で６．０、この接続金具１０によシ、各発光部７及
び受光部８は液位検出部９に固定される。液位検出部９
は、第２図に示す様に、直接液体４に接触しない様にタ
ンク５の外部に設けられているが、場合によってはタン
ク５の内部に設けても良い。FIG. 2 is a schematic configuration diagram showing an object position detector in a tank which is an embodiment of the present invention, and FIG. 3 is for explaining the operation mode of the object position detector in a tank shown in FIG. 4 is a perspective view showing in detail the main parts of the in-tank position detector shown in FIG. 2. In each of the above figures, the same parts as in FIG. Ashi,
A detailed explanation thereof will be omitted. In each of the above figures, 7 is a light emitting part such as a light emitting diode, 8 is a light receiving part such as a phototransistor, and 9 is a liquid level detecting part which is a position detecting part for detecting the level position of the liquid 4 stored in the tank 5.ib , are provided with a light emitting part 7 and a light receiving part 8 disposed facing each other so as to receive light from the light emitting part. 11 is a light irradiation part, and 12 is a light reception part.The light irradiation part 11 and the light reception part 12 are made by making a part of the liquid level detection part 9 transparent in order to improve their original transparency. It is formed. The light emitting section 7 is attached to the light emitting section 11, and the light receiving section 8 is attached to the light receiving section 12. Reference numeral 10 denotes a connecting fitting 6.0 for connecting the light emitting section 7 and the light receiving section 8. By means of this connecting fitting 10, each of the light emitting section 7 and the light receiving section 8 is fixed to the liquid level detecting section 9. Liquid level detection part 9
As shown in FIG. 2, is provided outside the tank 5 so as not to come into direct contact with the liquid 4, but may be provided inside the tank 5 depending on the case.
次に、第２図に示すこの発明の一実施例であるタンク内
の収納物位置検出器の動作について、第３図及び第４図
を参照して説明する。まず、第３図に示す様に、液位検
出部９内の液体４のレベル位置が点線で示す位置にある
場合、発光部７から出された元は受光部８を照らしてい
るが、液体４０レベル位置が実線で示す位置まで来ると
、上記光がしゃ断されて受光部８を照らさなくなる。受
光部８はホトトランジスタを使用しておシ、元の量が減
少すると電流が流れなくなる性質を持っている。したが
って、この受光部８であるホトトランジスタの出力を検
知することにより、タンク５内の液体４のレベル位置を
検知することができる。Next, the operation of the in-tank storage object position detector, which is an embodiment of the present invention shown in FIG. 2, will be explained with reference to FIGS. 3 and 4. First, as shown in FIG. 3, when the level position of the liquid 4 in the liquid level detection part 9 is at the position shown by the dotted line, the light emitted from the light emitting part 7 illuminates the light receiving part 8, but the liquid When the 40 level position reaches the position shown by the solid line, the light is cut off and no longer illuminates the light receiving section 8. The light-receiving section 8 uses a phototransistor and has a property that current stops flowing when the original amount decreases. Therefore, by detecting the output of the phototransistor which is the light receiving section 8, the level position of the liquid 4 in the tank 5 can be detected.
すなわち、第２図に示す様に、タンク５内の液体４のレ
ベル位置で、Ｈレベル位置は、液位検出部９の上方部側
に設けられる一対の発光部７及び受光部８と、液位検出
リレー２ａによって検知され、また、タンク５内の液体
４のＬレベル位置は、液位検出部９の下方部側に設けら
れる一対の発光部７及び受光部８と、液位検出リレー２
ｂによって検知される。That is, as shown in FIG. 2, the H level position is the level position of the liquid 4 in the tank 5. The L level position of the liquid 4 in the tank 5 is detected by the liquid level detection relay 2a, and the L level position of the liquid 4 in the tank 5 is detected by a pair of light emitting part 7 and light receiving part 8 provided on the lower side of the liquid level detection part 9,
b.
ここで、測定対象となる液体４として、元の透過性の良
い液体４を測定する場合には、第５図に示す様に・液位
検出部９内の液体４中にフロート６を浮べて、このフロ
ート６に取シ付けた元しゃ断部材１３によって、発光部
７から出された元が受光部８を照らす際に、上記光をさ
えぎる様に構成すれば良い。When measuring the original liquid 4 with good permeability as the liquid 4 to be measured, float the float 6 in the liquid 4 in the liquid level detection part 9 as shown in FIG. The source blocking member 13 attached to the float 6 may be configured to block the light emitted from the light emitting section 7 when it illuminates the light receiving section 8.
なお、上記実施例では、タンク５内に収納する収納物が
液体４でおる場合について説明したが、この収納物が固
体であっても良く、上記実施例と同様の効果を奏する。In the above embodiment, a case has been described in which the object stored in the tank 5 is the liquid 4, but the object may be solid, and the same effects as in the above embodiment can be obtained.
この発明は以上説明した様に、タンク内の収納物位置検
出器において、タンク内に収納する液体等の収納物位置
を検出する位置検出部に、発光ダイオード等の発光部と
、この発光部からの光を受ける様に、対向し°て配設さ
れるホトトランジスタ等の受光部とを設けて成る構成と
したので、タンク内に収納する収納物のレベル位置を、
極めて簡単な構成によシ、正確に、かつ安定して検出で
きると共に・測定対象として液体を用いた場合には、従
来例の電極を使用したものが、この電極と液体との接触
によって起る悪影響があるのに対して、この発明のもの
では、検出器の主要部を液体に直接接触することなく液
体のレベル位置を検出できる効果がある。また、位置検
出部をタンクの外部に設けることが可能となるため、そ
の取ｐ付は位置を変えることによ勺、タンク内の収納物
のレベル位置の設定を、比較的に簡単に行い得るなどの
優れた効果を奏するものである。As explained above, the present invention includes a position detector for stored objects in a tank, in which a position detecting section for detecting the position of stored objects such as liquid stored in the tank includes a light emitting section such as a light emitting diode, and a light emitting section from the light emitting section. The structure includes light receiving parts such as phototransistors placed opposite each other so as to receive light from the tank, so that the level position of the items stored in the tank can be
With an extremely simple configuration, accurate and stable detection is possible.When a liquid is used as the measurement target, conventional electrodes can detect In contrast to this, the present invention has the advantage of being able to detect the level position of the liquid without directly contacting the main part of the detector with the liquid. In addition, since the position detection unit can be installed outside the tank, it is relatively easy to install it by changing its position, and to set the level position of items stored in the tank. It has excellent effects such as:
第１図は従来のタンク内の収納物位置検出器を示す概略
構成図、第２図はこの発明の一実施例であるタンク内の
収納物位置検出器を示す概略構成図、第３図は、第２図
のタンク内の収納物位置検出器における動作態様を説明
するための原理図、第４図は、第２図のタンク内の収納
物位置検出器における要部を詳細に示す斜視図、第５図
はこの発明の他の実施例であるタンク内の収納物位置検
出部における動作態様を説明するための原理図である。
図において、１ 、１ ａ 、 ｌ ｂ 、 ｌ Ｃ−
電極、２ａ。
２ｂ−・・液位検出リレー、３・・・ケーブル、４・・
・液体、５・・・タンク、６・・・フロート、７・−・
発光部、８・・・受光部、９・・・液位検出部、１０・
・・接続金具、１１・・・光照射部分、１２−・・受光
部分、１３・−・元しゃ断部材である。
なお、各図中、同一符号は同一、又は相当部分を示す。
代理人 大岩増雄
第１図
第３図
手続補正帯
特許庁長官殿
】、事件の表示 特願昭 ５９−２６４６２号３、補正
をする者
代表者片山仁へ部
４、代理人
５、補正の対象
明細書の１発明の詳細な説明」の欄及び図面。
６、補正の内容
（１）明細書第５頁第１５行目の「直接液体４に接触し
ない様に」を削除する。
（２）添付図面第１図を別紙の通シに補正する。
第１図
Ｉｃ ＩＤFIG. 1 is a schematic configuration diagram showing a conventional position detector for items stored in a tank, FIG. 2 is a schematic configuration diagram showing a position detector for items stored in a tank according to an embodiment of the present invention, and FIG. , FIG. 4 is a perspective view showing in detail the main parts of the in-tank position detector shown in FIG. 2. , FIG. 5 is a principle diagram for explaining the operation mode of a storage object position detecting section in a tank according to another embodiment of the present invention. In the figure, 1, 1a, lb, lc-
Electrode, 2a. 2b--Liquid level detection relay, 3...Cable, 4...
・Liquid, 5... Tank, 6... Float, 7...
Light emitting part, 8... Light receiving part, 9... Liquid level detection part, 10.
. . . Connection fitting, 11 . . . Light irradiation portion, 12 . In each figure, the same reference numerals indicate the same or equivalent parts. Agent: Masuo Oiwa, Figure 1, Figure 3, Procedure Amendment Band, Commissioner of the Japan Patent Office], Indication of the case: Japanese Patent Application No. 59-26462, No. 3, Representative Hitoshi Katayama of the person making the amendment, Department: 4, Agent 5, Subject of the amendment 1. Detailed Description of the Invention" section of the specification and drawings. 6. Contents of amendment (1) Delete "Do not come into direct contact with liquid 4" on page 5, line 15 of the specification. (2) Amend Figure 1 of the attached drawings to a separate circular. Figure 1 Ic ID
Claims (1)
において、前記収納物位置を検出する位置検出部に、発
光ダイオード等の発光部と、この発光部からの光を受け
る様に、対向して配設されるホトトランジスタ等の受光
部とを設けて成ることを特徴とするタンク内の収納物位
置検出器。In a device for detecting the position of a stored object such as a liquid stored in a tank, the position detecting section for detecting the position of the stored object is provided with a light emitting section such as a light emitting diode, which faces the position detecting section so as to receive light from the light emitting section. What is claimed is: 1. A position detector for stored items in a tank, comprising: a light-receiving section such as a phototransistor;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2646284A JPS60169720A (en) | 1984-02-13 | 1984-02-13 | Position detector for accommodating material in tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2646284A JPS60169720A (en) | 1984-02-13 | 1984-02-13 | Position detector for accommodating material in tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60169720A true JPS60169720A (en) | 1985-09-03 |
Family
ID=12194173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2646284A Pending JPS60169720A (en) | 1984-02-13 | 1984-02-13 | Position detector for accommodating material in tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1014048A2 (en) * | 1998-12-17 | 2000-06-28 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
-
1984
- 1984-02-13 JP JP2646284A patent/JPS60169720A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1014048A2 (en) * | 1998-12-17 | 2000-06-28 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
| EP1014048A3 (en) * | 1998-12-17 | 2001-09-05 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
| US6452202B1 (en) | 1998-12-17 | 2002-09-17 | Samsung Electronics Co., Ltd. | Apparatus for measuring level of liquid in tank |
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