JPH0434631U - - Google Patents
Info
- Publication number
- JPH0434631U JPH0434631U JP7722890U JP7722890U JPH0434631U JP H0434631 U JPH0434631 U JP H0434631U JP 7722890 U JP7722890 U JP 7722890U JP 7722890 U JP7722890 U JP 7722890U JP H0434631 U JPH0434631 U JP H0434631U
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic
- liquid
- electrode
- contact electrode
- lowest
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 11
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Description
第１図、第２図は本考案に係る液量検出装置の
それぞれ回路図、フローチヤートである。
１……内容器、３……揚水管（連通管）、６…
…接触電極、７ａ〜７ｄ……静電電極、１０……
マイクロコンピユータ（液量判定手段、選択手段
、判定手段）、１１……最小レベル検出回路、１
２……個別発振回路。
FIG. 1 and FIG. 2 are a circuit diagram and a flowchart, respectively, of a liquid amount detection device according to the present invention. 1... Inner container, 3... Lifting pipe (communication pipe), 6...
...Contact electrode, 7a-7d... Electrostatic electrode, 10...
Microcomputer (liquid amount determination means, selection means, determination means), 11...minimum level detection circuit, 1
2...Individual oscillation circuit.
Claims (1)
の外面に液高さ方向に外装した複数の静電電極と
、最下位の静電電極より下方に接液可能に設けた
接触電極と、該接触電極と前記各静電電極との間
の静電容量の変化に基づいて液量を判定する液量
判定手段と、前記接触電極と導電性金属容器との
間の電気的導通の有無に基づいて最下位レベルを
検出する最下位レベル検出手段とを備えたことを
特徴とする液量検出装置。 (2) 導電性金属容器と連通する非導電性連通管
の外面に液高さ方向に外装した複数の静電電極と
、最下位の静電電極より下方に接液方向に設けた
接触電極と、前記各静電電極に対応して設けられ
、当該各静電電極と前記接触電極との間の静電容
量の変化に応じた周波数を発振する個別発振手段
と、各個別発振手段を選択的に休止又は動作させ
る選択手段と、前記各個別発振手段からの周波数
に基づいて当該静電電極の位置における液の有無
を判定する判定手段とを備えたことを特徴とする
液量検出装置。[Claims for Utility Model Registration] (1) A plurality of electrostatic electrodes sheathed in the liquid height direction on the outer surface of a non-conductive communication pipe communicating with a conductive metal container, and a portion connected below the lowest electrostatic electrode. a contact electrode provided to allow liquid to flow; a liquid amount determining means for determining a liquid amount based on a change in capacitance between the contact electrode and each of the electrostatic electrodes; and the contact electrode and a conductive metal container. A liquid amount detecting device comprising: a lowest level detecting means for detecting a lowest level based on the presence or absence of electrical continuity between the lowermost level. (2) A plurality of electrostatic electrodes are mounted on the outer surface of a non-conductive communication pipe that communicates with a conductive metal container in the direction of liquid height, and a contact electrode is provided below the lowest electrostatic electrode in the direction of contact with the liquid. , an individual oscillation means that is provided corresponding to each of the electrostatic electrodes and that oscillates a frequency according to a change in capacitance between each of the electrostatic electrodes and the contact electrode, and selectively oscillates each individual oscillation means. 1. A liquid amount detection device comprising: a selection means for stopping or operating the electrostatic electrode; and a determination means for determining the presence or absence of liquid at the position of the electrostatic electrode based on the frequency from each of the individual oscillation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722890U JP2502196Y2 (en) | 1990-07-18 | 1990-07-18 | Liquid amount detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722890U JP2502196Y2 (en) | 1990-07-18 | 1990-07-18 | Liquid amount detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434631U true JPH0434631U (en) | 1992-03-23 |
| JP2502196Y2 JP2502196Y2 (en) | 1996-06-19 |
Family
ID=31619420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7722890U Expired - Lifetime JP2502196Y2 (en) | 1990-07-18 | 1990-07-18 | Liquid amount detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502196Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7017408B2 (en) * | 2004-02-13 | 2006-03-28 | Be Intellectual Property, Inc. | Electro-optic liquid level sensing system for aircraft beverage brewing |
-
1990
- 1990-07-18 JP JP7722890U patent/JP2502196Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2502196Y2 (en) | 1996-06-19 |
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