JPH01105823U - - Google Patents
Info
- Publication number
- JPH01105823U JPH01105823U JP73988U JP73988U JPH01105823U JP H01105823 U JPH01105823 U JP H01105823U JP 73988 U JP73988 U JP 73988U JP 73988 U JP73988 U JP 73988U JP H01105823 U JPH01105823 U JP H01105823U
- Authority
- JP
- Japan
- Prior art keywords
- infrared light
- liquid
- signal conversion
- conversion circuit
- liquid level
- 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)
Description
第１図は本考案に係る液量検出装置を電気ポツ
トに適用した実施例を示す要部説明図、第２図は
その液量検出装置の構成図、第３図はその液レベ
ルと信号変換回路の出力電圧との関係を示すグラ
フ図、第４図は水の赤外線吸収スペクトルを示す
グラフ図である。
１〜液体容器、２〜連通管、３〜吐出管、４〜
近赤外線発光素子（発光ダイオード）、５〜近赤
外線受光素子、６〜信号変換回路、７〜表示手段
。
Fig. 1 is an explanatory diagram of the main parts showing an embodiment in which the liquid level detection device according to the present invention is applied to an electric pot, Fig. 2 is a configuration diagram of the liquid level detection device, and Fig. 3 is the liquid level and signal conversion. A graph showing the relationship with the output voltage of the circuit, and FIG. 4 is a graph showing the infrared absorption spectrum of water. 1-Liquid container, 2-Communication pipe, 3-Discharge pipe, 4-
Near infrared light emitting element (light emitting diode), 5 - near infrared light receiving element, 6 - signal conversion circuit, 7 - display means.
Claims (1)
向して配設された一対の近赤外線発光素子および
近赤外線受光素子と、前記液体の液レベル変化に
よる前記近赤外線受光素子の受光量の変化を電気
信号に変換する信号変換回路と、該信号変換回路
からの出力により液レベルを表示する表示手段と
からなり、前記近赤外線発光素子から照射される
近赤外線の波長が８００〜１２００ｎｍであるこ
とを特徴とする液量検出装置。 A pair of near-infrared light-emitting elements and near-infrared light-receiving elements are arranged to face each other so as to sandwich the liquid in the liquid container from above and below, and electrically detect changes in the amount of light received by the near-infrared light-receiving elements due to changes in the level of the liquid. It consists of a signal conversion circuit that converts into a signal, and a display means that displays the liquid level based on the output from the signal conversion circuit, and is characterized in that the wavelength of near-infrared rays emitted from the near-infrared light emitting element is 800 to 1200 nm. Liquid level detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP73988U JPH01105823U (en) | 1988-01-07 | 1988-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP73988U JPH01105823U (en) | 1988-01-07 | 1988-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105823U true JPH01105823U (en) | 1989-07-17 |
Family
ID=31200027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP73988U Pending JPH01105823U (en) | 1988-01-07 | 1988-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101360068B1 (en) * | 2012-12-07 | 2014-02-12 | 현대자동차 주식회사 | Level measurement device of urea tank in urea supply system for selective catalyst reduction device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55125472A (en) * | 1979-03-16 | 1980-09-27 | Technicon Instr | Method and device for detecting fluid flow section and section boundary and method and device for determining liquid section volume |
| JPS58167921A (en) * | 1982-03-29 | 1983-10-04 | Borukano Kk | Automatic detecting method of oil and water in waste oil tank |
-
1988
- 1988-01-07 JP JP73988U patent/JPH01105823U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55125472A (en) * | 1979-03-16 | 1980-09-27 | Technicon Instr | Method and device for detecting fluid flow section and section boundary and method and device for determining liquid section volume |
| JPS58167921A (en) * | 1982-03-29 | 1983-10-04 | Borukano Kk | Automatic detecting method of oil and water in waste oil tank |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101360068B1 (en) * | 2012-12-07 | 2014-02-12 | 현대자동차 주식회사 | Level measurement device of urea tank in urea supply system for selective catalyst reduction device |
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