JPS55110919A - Liquid depth measuring device - Google Patents
Liquid depth measuring deviceInfo
- Publication number
- JPS55110919A JPS55110919A JP1780779A JP1780779A JPS55110919A JP S55110919 A JPS55110919 A JP S55110919A JP 1780779 A JP1780779 A JP 1780779A JP 1780779 A JP1780779 A JP 1780779A JP S55110919 A JPS55110919 A JP S55110919A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- signal
- liquid
- conductor
- 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
Abstract
PURPOSE: To obtain precise value at any time, by amplifying signal from capacitor to be used for liquid depth detection and signal from capacitor with unit length to be used as reference alternately at the same amplification circuit by means of change-over circuit while making arithmetic operation by comparing both output values.
CONSTITUTION: In liquid tank 1, liquid of depth H is contained. Inside the tank, capacitor 3 for liquid depth detection, furnished with tublar electrode 6 which is extended from near bottom part to the upper edge of the tank and cylindrical electrode 5, and close to bottom part, capacitor 4 in unit length to be used as reference and furnished with tubular electrode 8 and cylindrical electrode 7, is provided. Conductor 9, 10 from capicitor 3, 4 are connected to change-over circuit 11 and transmits signal either from conductor 9 or conductor 10 to amplification circuit 13 and turn over switching is controlled by timing circuit 12. After being amplified 13, signal is memorized in memory circuit 15 temporarily and later is sent to arithmetic operation circuit 16 which works for getting ratio between signals from both capacitor 3, 4 being input at the same time, and sends it to indicator 17 intermittently.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1780779A JPS55110919A (en) | 1979-02-20 | 1979-02-20 | Liquid depth measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1780779A JPS55110919A (en) | 1979-02-20 | 1979-02-20 | Liquid depth measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110919A true JPS55110919A (en) | 1980-08-27 |
Family
ID=11953992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1780779A Pending JPS55110919A (en) | 1979-02-20 | 1979-02-20 | Liquid depth measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110919A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106851A (en) * | 1980-11-06 | 1982-07-02 | Vdo Schindling | Apparatus for measuring capacity filling degree |
JPS57171535U (en) * | 1981-04-23 | 1982-10-28 | ||
JPS58186016A (en) * | 1982-04-26 | 1983-10-29 | Tokyo Tatsuno Co Ltd | Electrostatic capacity type liquid quantity measuring device |
US6250152B1 (en) * | 1995-03-29 | 2001-06-26 | Daimlerchrysler Ag | Sensor arrangement |
JP2012163508A (en) * | 2011-02-09 | 2012-08-30 | Mitsubishi Electric Corp | Fuel detection apparatus |
-
1979
- 1979-02-20 JP JP1780779A patent/JPS55110919A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106851A (en) * | 1980-11-06 | 1982-07-02 | Vdo Schindling | Apparatus for measuring capacity filling degree |
JPH0256616B2 (en) * | 1980-11-06 | 1990-11-30 | Fuao Dee Oo Aadorufu Shintoringu Ag | |
JPS57171535U (en) * | 1981-04-23 | 1982-10-28 | ||
JPS58186016A (en) * | 1982-04-26 | 1983-10-29 | Tokyo Tatsuno Co Ltd | Electrostatic capacity type liquid quantity measuring device |
US6250152B1 (en) * | 1995-03-29 | 2001-06-26 | Daimlerchrysler Ag | Sensor arrangement |
JP2012163508A (en) * | 2011-02-09 | 2012-08-30 | Mitsubishi Electric Corp | Fuel detection apparatus |
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