KR970019840A - Greenhouse Remote Thermometer Side Circuit - Google Patents

Greenhouse Remote Thermometer Side Circuit Download PDF

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Publication number
KR970019840A
KR970019840A KR1019950034583A KR19950034583A KR970019840A KR 970019840 A KR970019840 A KR 970019840A KR 1019950034583 A KR1019950034583 A KR 1019950034583A KR 19950034583 A KR19950034583 A KR 19950034583A KR 970019840 A KR970019840 A KR 970019840A
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KR
South Korea
Prior art keywords
voltage
current
circuit
temperature
power supply
Prior art date
Application number
KR1019950034583A
Other languages
Korean (ko)
Other versions
KR0146726B1 (en
Inventor
류관희
홍순호
김효중
Original Assignee
김광희
농촌진흥청
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.)
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Publication date
Application filed by 김광희, 농촌진흥청 filed Critical 김광희
Priority to KR1019950034583A priority Critical patent/KR0146726B1/en
Publication of KR970019840A publication Critical patent/KR970019840A/en
Application granted granted Critical
Publication of KR0146726B1 publication Critical patent/KR0146726B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
    • G01K7/20—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/26—Electric devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

본 발명은 농업용 온실내에서 사용되는 원격온도계측회로에 관한 것으로, 특히 대형의 농업용 온실에 있어서, 안정된 신호전송을 위해 표준화된 전류신호를 출력하며, 전원부의 극성과 무관한 2개의 배선만으로 회로작동에 필요한 전원과 측정신호를 동시에 입출력하고 일정한 범위 안에서 공급전압의 변동에 무관하게 계측치의 정도를 유지할 수 있는 온도계측 회로에 관한 것인바, 상용화된 IC화 온도센서와 간단한 신호처리회로를 일체형으로 제작하여, 장치의 가격과 안정된 계측성능, 배선에 소요되는 비용과 설치의 용이성등을 모두 만족시키는 온실용 원격 온도계측 회로를 제공하고자 전원공급 및 신호전송을 겸하는 2개의 배선이 바뀌어 연결되더라도, 정상적인 작동을 유지할 수 있도록 하는 극성유지수단, 장거리 전송으로 인한 전압강하나 공급전원의 전압에 무관하게 신호처리회로의 정도를 유지하기 위한 정전류공급수단, 측정점의 온도에 비례한 전기적 신호를 발생하는 온도검출수단, 계측회로의 작동영역을 설정하는 기준전압설정수단, 온도검출수단과 기준전압설정수단의 출력전압을 비교하는 전압비교수단, 상기 비교수단에 연결되어 회로의 바이패스(bypass)전류를 제어하는 전류제어수단, 상기 전류제어 수단에 연결되어 바이패스(bypass)전류에 비례하는 전압을 출력시키는 전류검출수단으로 이루어지는 것을 특징으로 한다.The present invention relates to a remote temperature measuring circuit used in an agricultural greenhouse, and particularly in a large agricultural greenhouse, outputs a standardized current signal for stable signal transmission, and operates the circuit using only two wires irrespective of the polarity of the power supply. This is a thermometer circuit that can simultaneously input and output power and measurement signals required for the control, and maintain the measured value irrespective of fluctuations in the supply voltage within a certain range. In order to provide a remote thermometer-side circuit for greenhouses that satisfies both the cost of the device, stable measurement performance, the cost of wiring, and the ease of installation, even if two wires, both power supply and signal transmission, are connected and connected, Polarity maintaining means to maintain the voltage Constant current supply means for maintaining the accuracy of the signal processing circuit irrespective of the voltage of the power supply, temperature detection means for generating an electrical signal proportional to the temperature of the measuring point, reference voltage setting means for setting the operating area of the measurement circuit, temperature detection Voltage comparison means for comparing the output voltage of the means and the reference voltage setting means, current control means connected to the comparison means to control the bypass current of the circuit, bypass current connected to the current control means Characterized in that the current detection means for outputting a voltage proportional to the.

Description

온실용 원격 온도 계측 회로Greenhouse Remote Temperature Measurement Circuit

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

제1도는 본 발명의 전체구성을 나타내는 블록도,1 is a block diagram showing the overall configuration of the present invention;

제2도는 본 발명의 일실시 예에 따른 세부 회로도,2 is a detailed circuit diagram according to an embodiment of the present invention;

제3도는 본 발명의 일실시 예에 따른 출력특성 그래프,3 is an output characteristic graph according to an embodiment of the present invention,

제4도는 본 발명의 사용상태를 예시하는 개략적인 계통도.4 is a schematic schematic diagram illustrating a use state of the present invention.

Claims (1)

전원공급 및 신호송출을 겸하는 2개의 배선을 사용하여 온실의 온도를 원격으로 계측함에 있어서, 배선의 극성이 바뀌어 연결되더라도 정상적인 작동을 유지할 수 있도록 하는 극성유지수단(1), 장거리 전송으로 인한 전압강하나 공급전원의 전압에 무관하게 신호처리회로의 정도를 유지하는 정전류공급수단(1)과, 측정점의 온도에 비례한 전기적 신호를 발생하는 온도검출수단(3), 계측회로의 작동영역을 설정하는 기준전압설정수단(4)과, 상기 온도검출수단(3)과 상기 기준전압설정수단(4)의 출력전압을 비교하는 전압비교수단(5), 상기 전압비교수단(5)에 연결되어 회로의 바이패스(bypass)전류를 제어하는 전류제어수단(6)과 상기 전류제어수단(6)에 바이패스 전류에 검출하여 궤환 전압을 출력시키는 전류검출수단(7)을 결합하여 이루어지는 것을 특징으로 하는 온실용 원격 온도계측 회로.In order to remotely measure the temperature of the greenhouse using two wires, both power supply and signal transmission, polarity maintaining means (1) to maintain normal operation even if the polarity of the wire is changed and the voltage drop due to long distance transmission A constant current supply means (1) for maintaining the accuracy of the signal processing circuit regardless of the voltage of the power supply, a temperature detecting means (3) for generating an electrical signal proportional to the temperature of the measuring point, and a reference for setting the operating area of the measurement circuit. Connected to the voltage setting means 4, the voltage comparing means 5 for comparing the output voltages of the temperature detecting means 3 and the reference voltage setting means 4, and the voltage comparing means 5, A current control means 6 for controlling a bypass current and a current detection means 7 for detecting a bypass current and outputting a feedback voltage to the current control means 6; Greenhouse remote temperature measuring circuit for. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950034583A 1995-10-09 1995-10-09 Circuit for measuring the temperature in green house KR0146726B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950034583A KR0146726B1 (en) 1995-10-09 1995-10-09 Circuit for measuring the temperature in green house

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950034583A KR0146726B1 (en) 1995-10-09 1995-10-09 Circuit for measuring the temperature in green house

Publications (2)

Publication Number Publication Date
KR970019840A true KR970019840A (en) 1997-05-28
KR0146726B1 KR0146726B1 (en) 1998-08-01

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ID=19429649

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950034583A KR0146726B1 (en) 1995-10-09 1995-10-09 Circuit for measuring the temperature in green house

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KR (1) KR0146726B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102079653B1 (en) 2019-01-08 2020-02-20 충남대학교산학협력단 Three-dimensional temperature measuring system of the greenhouse space

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102079653B1 (en) 2019-01-08 2020-02-20 충남대학교산학협력단 Three-dimensional temperature measuring system of the greenhouse space

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Publication number Publication date
KR0146726B1 (en) 1998-08-01

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