JPS6454221A - Liquid level detector - Google Patents

Liquid level detector

Info

Publication number
JPS6454221A
JPS6454221A JP21194387A JP21194387A JPS6454221A JP S6454221 A JPS6454221 A JP S6454221A JP 21194387 A JP21194387 A JP 21194387A JP 21194387 A JP21194387 A JP 21194387A JP S6454221 A JPS6454221 A JP S6454221A
Authority
JP
Japan
Prior art keywords
output electrodes
common input
input electrode
liquid level
output
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
Application number
JP21194387A
Other languages
Japanese (ja)
Inventor
Kanji Yoshimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP21194387A priority Critical patent/JPS6454221A/en
Publication of JPS6454221A publication Critical patent/JPS6454221A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE:To enable detection of a different liquid level, by selecting several output electrodes, set vertically at a specified interval, sequentially one at a time, to detect continuity to a common input electrode set therebelow. CONSTITUTION:When a liquid is at a height between output electrodes T2 and T2, the output electrodes T1 and T2 submerge in the liquid while output electrodes T3 and T4 are located in the air. When a switching transistor S1 is turned ON, the output electrode T1 and a common input electrode T0 conduct through resistances R1, r1 and r0 to allow detection of a rise in the potential of the common input electrode T0. Likewise, when the switching transistor S2 is turned ON, a rise in the potential of the common input electrode T0 is detected. Then, a detection circuit 4 outputs a voice signal corresponding to a set height of the highest of the output electrodes T1 and T2, namely, the output electrode T2 detected for conduction as liquid level signal from a buzzer 6.
JP21194387A 1987-08-25 1987-08-25 Liquid level detector Pending JPS6454221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21194387A JPS6454221A (en) 1987-08-25 1987-08-25 Liquid level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21194387A JPS6454221A (en) 1987-08-25 1987-08-25 Liquid level detector

Publications (1)

Publication Number Publication Date
JPS6454221A true JPS6454221A (en) 1989-03-01

Family

ID=16614261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21194387A Pending JPS6454221A (en) 1987-08-25 1987-08-25 Liquid level detector

Country Status (1)

Country Link
JP (1) JPS6454221A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04102432U (en) * 1991-01-23 1992-09-03 グラフテツク株式会社 Liquid level detection device
US5408227A (en) * 1990-05-21 1995-04-18 Nippondenso Co., Ltd. Multiplex transmission system for vehicle
JP2003056871A (en) * 2001-08-10 2003-02-26 Sanyo Electric Co Ltd Humidifier
JP2009165755A (en) * 2008-01-18 2009-07-30 Hitachi Koki Co Ltd Dust collector
CN110269510A (en) * 2019-07-18 2019-09-24 陈毅强 A kind of electric kettle with water level detecting function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408227A (en) * 1990-05-21 1995-04-18 Nippondenso Co., Ltd. Multiplex transmission system for vehicle
JPH04102432U (en) * 1991-01-23 1992-09-03 グラフテツク株式会社 Liquid level detection device
JP2003056871A (en) * 2001-08-10 2003-02-26 Sanyo Electric Co Ltd Humidifier
JP2009165755A (en) * 2008-01-18 2009-07-30 Hitachi Koki Co Ltd Dust collector
CN110269510A (en) * 2019-07-18 2019-09-24 陈毅强 A kind of electric kettle with water level detecting function

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