KR880012992A - Water level detection circuit of electrode - Google Patents

Water level detection circuit of electrode Download PDF

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Publication number
KR880012992A
KR880012992A KR870003489A KR870003489A KR880012992A KR 880012992 A KR880012992 A KR 880012992A KR 870003489 A KR870003489 A KR 870003489A KR 870003489 A KR870003489 A KR 870003489A KR 880012992 A KR880012992 A KR 880012992A
Authority
KR
South Korea
Prior art keywords
electrode
water level
detection circuit
level detection
detect
Prior art date
Application number
KR870003489A
Other languages
Korean (ko)
Other versions
KR890004951B1 (en
Inventor
김정호
정태진
채영도
조삼현
Original Assignee
경상현
재단법인한국전자 통신연구소
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 경상현, 재단법인한국전자 통신연구소 filed Critical 경상현
Priority to KR1019870003489A priority Critical patent/KR890004951B1/en
Publication of KR880012992A publication Critical patent/KR880012992A/en
Application granted granted Critical
Publication of KR890004951B1 publication Critical patent/KR890004951B1/en

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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
    • G01F23/0046—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 with a stationary probe, where a liquid specimen is separated from the mean mass and measured

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

내용 없음No content

Description

전극봉의 수위 검지 회로Water level detection circuit of electrode

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 본 발명 수위 검지 회로의 블록도. 제 2 도는 본 발명 수위 검지 회로의 회로도.1 is a block diagram of the water level detection circuit of the present invention. 2 is a circuit diagram of the water level detection circuit of the present invention.

Claims (3)

전극봉(1)에 의하여 수위검지회로(3)로 수위검지를 할 수 있도록한 전극봉의 수위검지회로에 있어서 AC입력전압에 의하여 정전용량값을 검지하되 이 검지된 출력에 따라 수위의 레벨을 검지할 수 있도록한 전극봉의 수위검지회로.In the water level detection circuit of the electrode which enables the water level detection circuit 3 to detect the water level by the electrode 1, the capacitance value is detected by the AC input voltage, but the level of the water level is detected according to the detected output. Level detection circuit of electrode to make it possible. 제 1 항에 있어서, AC입력전압의 반주기동안 온 되도록 저항(R1∼R3), 저항(R5), 가변저항(VR), 다이오드(D1∼D3), 트랜지스터(TR1)(TR|2) 및 포토트랜지스터(ph-TR)를 구성하여 정전용량을 검지할 수 있도록한 것을 특징으로 하는 전극봉의 수위검지회로.According to claim 1, wherein the resistance to be on for a half period of the AC input voltage (R 1 ~R 3), a resistance (R 5), variable resistor (VR), a diode (D 1 ~D 3), a transistor (TR 1) ( 2 ) and a phototransistor (ph-TR) configured to detect the capacitance, wherein the electrode level sensor circuit. 제 1 항에 있어서, 수위 레벨을 검지할 수 있도록 저항(R4)콘덴서(C), 저항(R6∼R10), 비교기(Comp)로 구성하여서된 것을 특징으로 하는 전극봉의 수위검지회로.The electrode level sensor circuit according to claim 1, comprising a resistor (R 4 ) capacitor (C), a resistor (R 6 to R 10 ), and a comparator (Comp) to detect the water level. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870003489A 1987-04-11 1987-04-11 Water level detective circuit KR890004951B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870003489A KR890004951B1 (en) 1987-04-11 1987-04-11 Water level detective circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870003489A KR890004951B1 (en) 1987-04-11 1987-04-11 Water level detective circuit

Publications (2)

Publication Number Publication Date
KR880012992A true KR880012992A (en) 1988-11-29
KR890004951B1 KR890004951B1 (en) 1989-12-02

Family

ID=19260700

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870003489A KR890004951B1 (en) 1987-04-11 1987-04-11 Water level detective circuit

Country Status (1)

Country Link
KR (1) KR890004951B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100695630B1 (en) * 2005-08-31 2007-03-16 동명대학교산학협력단 Intelligent level measurement system and method with self-tuning ability

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101414199B1 (en) * 2014-03-21 2014-07-01 금양산업(주) Level detecting circuit of Electrostatic capacitance type
KR101414194B1 (en) * 2014-03-21 2014-07-01 금양산업(주) Level detecting circuit of Electrostatic capacitance type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100695630B1 (en) * 2005-08-31 2007-03-16 동명대학교산학협력단 Intelligent level measurement system and method with self-tuning ability

Also Published As

Publication number Publication date
KR890004951B1 (en) 1989-12-02

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