KR930007784B1 - Heater water temperature control circuit for using thermistor - Google Patents

Heater water temperature control circuit for using thermistor Download PDF

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Publication number
KR930007784B1
KR930007784B1 KR1019900022391A KR900022391A KR930007784B1 KR 930007784 B1 KR930007784 B1 KR 930007784B1 KR 1019900022391 A KR1019900022391 A KR 1019900022391A KR 900022391 A KR900022391 A KR 900022391A KR 930007784 B1 KR930007784 B1 KR 930007784B1
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heater
voltage
thermistor
temperature
temperature sensor
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KR1019900022391A
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Korean (ko)
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KR920013069A (en
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김문기
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대우전자부품 주식회사
김용원
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The circuit for controlling the water temperature of a heater comprises (I) a temperature sensor (10) for controlling the voltage applied to the heater (30), (II) a chopping wave generator (20) as a reference voltage generator and a heating element (WH) connected to AC power supply. The heater (30) compares the output voltage of the temperature sensor with the chopping wave generator. The difference between the two voltages is output. The heater is connected to the heating element (WH).

Description

더어미스터를 이용한 히터수온 조절회로Heater water temperature control circuit using the thermistor

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 온도 센서부 20 : 삼각파 발생기10: temperature sensor unit 20: triangle wave generator

30 : 히터 가열부 TH : 더어미스터30: heater heating unit TH: thermistor

WH : 발열소자 VR : 가변저항기WH: Heating element VR: Variable resistor

OP Amp1-OP Amp3: 비교증폭기 Q1: 트랜지스터OP Amp 1 -OP Amp 3 : Comparative Amplifier Q 1 : Transistor

PT : 포토 트라이액 T1: 수광 트라이액PT: phototriac T 1 : light receiving triac

T2: 트라이액T 2 : Triac

본 발명은 더어미스터(Thermister)를 이용하여 히터의 수온을 조절하는 수온 조절 회로에 관한 것으로서, 특히 수온을 조절하는 히터에 공급되는 전압을 온/오프하여 물의 온도를 조절할 수 있게 한 것이다.The present invention relates to a water temperature control circuit for controlling the water temperature of a heater using a thermister, and in particular, to control the temperature of water by turning on / off the voltage supplied to the heater for controlling the water temperature.

종래에는 수온을 조절하는 히터(발열소자)에 공급되는 전압을 조절해 주기 위한 온도센서 회로와 수온히터 가열회로 등을 구비하고 있지 못하므로 인하여 히터의 수온은 조절할 수가 없었다.Conventionally, since the temperature sensor circuit and the water temperature heater heating circuit for controlling the voltage supplied to the heater (heating element) for controlling the water temperature are not provided, the water temperature of the heater cannot be adjusted.

본 발명은 히터(발열소자)에 공급되는 전압을 온/오프해 줄 수 있는 온도 센서부와 삼각파 발생기 및 히터 가열부 등을 구성해 주므로써 히터의 수온을 조절할 수 있게 한 것이다.The present invention is to control the temperature of the heater by configuring a temperature sensor unit, a triangular wave generator and a heater heating unit that can turn on / off the voltage supplied to the heater (heating element).

이를 첨부된 도면에 의하여 본 발명을 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings as follows.

제1도에서와 같이, 더어미스터(TH)에서 감지된 물의 온도에서 상응 전압을 출력하는 온도 센서부(10)와 상기 온도 센서부에서 출력되는 전압과 삼각파 발생기(20)에서 출력되는 전압을 비교하여 비교된 신호를 출력하는 히터 가열부(30)에 연결하고, 상기 히터 가열부(30)에는 기준전압 발생수단으로서의 삼각파 발생기(20)와 발열소자(WH)를 연결하며, 발열소자(WH)는 AC전원단자에 연결하여서 구성한 것이다.As shown in FIG. 1, the temperature sensor unit 10 outputting a corresponding voltage at the temperature of water sensed by the thermistor TH, and the voltage output from the temperature sensor unit and the voltage output from the triangular wave generator 20 are compared. And a heater heater 30 for outputting the compared signal, and the heater heater 30 is connected to a triangular wave generator 20 as a reference voltage generating means and a heating element WH, and generates a heating element WH. Is configured by connecting to AC power terminal.

상기 온도 센서부(10)에는 더어미스터(TH)와 가변 저항기(VR) 및 비교증폭기(OP Amp1), 저항(R1-R7), 콘덴서(C1)가 연결되어 있고, 상기 삼각파 발생기(20)에는 비교 증폭기(OP Amp3)와 저항(R8-R10), 콘덴서(C5)가 연결되어 있고, 히터 가열부(30)에는 트랜지스터(Q1)와 포토 커플러(PT) 및 트라이액(T2), 저항(R11-R15), 콘덴서(C3),(C4)가 연결되어 있다.The temperature sensor unit 10 is connected to a demister (TH), a variable resistor (VR), a comparative amplifier (OP Amp 1 ), a resistor (R 1- R 7 ), a capacitor (C 1 ), the triangular wave generator A comparison amplifier (OP Amp 3 ), a resistor (R 8 -R 10 ), a capacitor (C 5 ) is connected to the 20, and the heater heating part 30 is a transistor (Q 1 ), a photo coupler (PT) and Triac (T 2 ), resistors (R 11 -R 15 ), capacitors (C 3 ), (C 4 ) are connected.

이와 같이 구성된 본 발명의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above in detail.

먼저 트랜지스터(Q1)의 "온"되고, 이에 따라 트라이액(T1),(T2)이 온된 상태에서 발열소자(WH)가 AC전원에 의하여 가열되면 온도 센서부(10)에서는 더어미스터(TH)에서 감지된 물의 온도에 상응하는 전압과 가변 저항기(VR)에서 가변된 기준전압을 비교하여 비교된 전압이 출력된다.First, when the heating element WH is heated by AC power while the triac T 1 and T 2 are turned on by the transistor Q 1 , the temperature sensor 10 in the temperature sensor unit 10 is thermistor. The compared voltage is output by comparing the voltage corresponding to the temperature of the water sensed at TH with the reference voltage varied in the variable resistor VR.

즉, 비교증폭기(OP Amp1)의 입력 비반전(+) 단자에는 저항(R2)을 통하여 더어미스터(TH)에 의하여 감지된 물의 온도에 상응하는 전압이 인가되고, 상기 비교 증폭기(op amp1)의 입력 반전(-) 단자에 저항(R5)(R6)을 통하여 가변저항기(VR)에 의해 설정된 기준전압이 입력되는데, 이때 더어미스터(TH)로부터의 전압이 가변저항기(VR)의 가변전압 보다 높으면 비교증폭기(OP Amp1)에서는 하이 전압이 출력하고, 더어미스터(TH)로부터의 전압이 낮을 경우에는 비교증폭기(OP Amp1)에서는 물의 온도에 상응하는 전압이 출력된다.That is, a voltage corresponding to the temperature of the water sensed by the demister (TH) through the resistor (R 2 ) is applied to the input non-inverting (+) terminal of the comparison amplifier (OP Amp 1 ), and the comparison amplifier (op amp) 1 ) The reference voltage set by the variable resistor VR is input to the input inverting terminal (−) of the resistor R 5 and R 6 , wherein the voltage from the thermistor TH is converted to the variable resistor VR. of the high detection amplifier (OP amp 1) than the variable voltage and the high voltage is output, when low, the voltage from deoeo Mr (TH) there is the output voltage corresponding to the water temperature detection amplifier (OP amp 1).

이렇게 비교증폭기(OP Amp1)에서 비교된 전압은 히터 가열부(30)내의 비교증폭기(OP Amp2)의 반전(-) 단자로 입력된다.Thus the voltage comparison in the comparison amplifier (OP Amp 1) is the reverse of the comparison amplifier (OP Amp 2) in the heater heating element 30 - it is input to the terminal ().

또한 삼각파 발생기(20)의 출력신호는 비교증폭기(OP Amp3)의 반전(-)단자에 접속된 저항(R8), 콘덴서(C5)를 거쳐 히터가열부(30)로 인가되고, 비반전 (+)단자에는 저항(R9,R10)를 거쳐 접지되며 콘덴서(C5)의 충방전동작과 출력신호의 조합으로 수온의 높고, 낮음을 판단할 수 있는 기준전압으로서 삼각 펄스파를 발생시켜 히터 가열부(30)의 비교 증폭기(OP Amp2)의 비반전 단자로 인가한다.In addition, the output signal of the triangular wave generator 20 is applied to the heater heating unit 30 via a resistor (R 8 ) and a capacitor (C 5 ) connected to the inverting (-) terminal of the comparative amplifier (OP Amp 3 ). The inverting (+) terminal is grounded via resistors (R 9 and R 10 ), and a triangular pulse wave is used as a reference voltage that can determine the high and low water temperature by the combination of the charge / discharge operation of the capacitor (C 5 ) and the output signal. Is generated and applied to the non-inverting terminal of the comparison amplifier OP Amp 2 of the heater heating unit 30.

온도센서부(10)로부터 출력되는 변화하는 물의 온도에 상응하는 전압과 그 시점에서 비교증폭기(OP Amp3)에서 출력된 전압을 비교하여 상기 비교 증폭기(OP Amp3)에서 출력되는 삼각펄스파의 전위가 온도 센서부(10)로부터 출력되는 전압보다 작을 경우에는 비교 증폭기(OP Amp2)의 출력단에서는 하이 전압이 출력되어 히터 가열부(30)내의 트랜지스터(Q1)이 턴오프되어 히터 가열부(30)는 동작하지 않게되어 적정온도를 유지하게 되고, 비교 증폭기(OP Amp2)의 반전(-) 단자에 입력된 물의 온도에 상응하는 전압보다 비교 증폭기(OP Amp3)에서 출력된 전압이 높으면 비교증폭기(OP Amp2)에서는 로우 전압이 출력되어 히터 가열부(30)내의 트랜지스터(Q1)가 턴 온으로 출력된다.For comparing the voltage output from the comparison amplifier (OP Amp 3) from the voltage and the time point corresponding to the temperature of the water which changes output from the comparison amplifier (OP Amp 3) a triangular pulse wave that is output from the temperature sensor unit 10 When the potential is smaller than the voltage output from the temperature sensor unit 10, a high voltage is output at the output terminal of the comparison amplifier OP Amp 2 , and the transistor Q 1 in the heater heating unit 30 is turned off, thereby heating the heater heating unit. the voltage output from the comparison amplifier (OP amp 3) than the voltage corresponding to the temperature of the water input to the terminal-30 is not operated and to keep the right temperature, the comparison amplifier (OP amp 2) inversion of the () When high, a low voltage is output from the comparison amplifier OP Amp 2 so that the transistor Q 1 in the heater heating unit 30 is turned on.

이때 트랜지스터(Q1)가 턴온됨에 따라 포토 트라이액(PT) 내의 발광소자(LED)에 Vcc전원이 가해지므로 수광 트라이액(T1)에서는 발광 빛을 수광하여 수광 트라이액(T1)이 턴온되고, 따라서 트라이액(T2)도 턴온되므로 AC전원에 의하여 가열되는 발열소자(WH)를 구동시키므로써 수온(물의 온도)을 조절할 수가 있는 것이다.At this time, as the transistor Q 1 is turned on, the Vcc power is applied to the light emitting device LED in the phototriac PT, so that the light receiving triac T 1 receives the emitted light to turn on the light receiving triac T 1 . Therefore, since the triac T 2 is also turned on, the water temperature (water temperature) can be adjusted by driving the heating element WH heated by the AC power.

이와 같이 본 발명은 수온 히터에 공급되는 전압을 온/오프시킬 수 있는 온도 센서부와 삼각파 발생기 및 히터 가열부 등을 구성해 주므로써 가열되는 발열소자를 이용하여 수온을 조절해 줄 수 있는 효과가 있는 것이다.As described above, the present invention has an effect of adjusting the water temperature by using a heating element that is heated by configuring a temperature sensor unit and a triangular wave generator and a heater heating unit which can turn on / off the voltage supplied to the water temperature heater. It is.

Claims (3)

더어미스터에서 감지된 물의 온도에서 상응하는 전압을 출력하는 온도 센서부(10)를 온도 센서부에서 출력되는 전압과 삼각파 발생기(20)에서 출력되는 전압을 비교하여 비교된 신호를 출력하는 히터 가열부(30)에 연결하고, 상기 히터 가열부(30)에는 삼각파 발생기(20)와 통상의 발열소자(WH)를 연결하여서 구성함을 특징으로 하는 더어미스터를 이용한 히터수온 조절회로.Heater heating unit for outputting the compared signal by comparing the voltage output from the temperature sensor unit with the temperature sensor unit 10 for outputting a corresponding voltage at the temperature of the water detected by the thermistor output voltage from the triangular wave generator 20 30, wherein the heater heating unit 30 is configured by connecting a triangular wave generator 20 and a common heating element (WH) to the heater water temperature control circuit using a demister. 제1항에 있어서, 더어미스터에서 감지된 물의 온도에 상응하는 전압을 출력하는 상기 온도 센서부(10)는 더어미스터(TH)와 가변 저항기(VR) 및 비교증폭기(OP Amp1)등으로 구성함을 특징으로 하는 더어미스터를 이용한 히터 수온 조절회로.According to claim 1, wherein the temperature sensor unit 10 for outputting a voltage corresponding to the temperature of the water sensed by the thermistor is composed of a thermistor (TH), a variable resistor (VR), a comparative amplifier (OP Amp 1 ), etc. Heater water temperature control circuit using the thermistor, characterized in that. 제1항에 있어서, 온도 센서부에서 출력되는 전압과 삼각파 발생기에서 출력되는 전압과를 비교하여 비교된 신호를 출력하는 상기 히터 가열부(30)는 비교증폭기(OP Amp2)와 트랜지스터(Q1) 및 포토 트라이액(PT), 트라 이액(T2)등으로 구성함을 특징으로 하는 더어미스터를 이용한 히터수온 조절회로.According to claim 1, wherein the heater heater 30 for outputting a signal compared by comparing the voltage output from the temperature sensor unit and the voltage output from the triangular wave generator is a comparison amplifier (OP Amp 2 ) and a transistor (Q 1) Heater temperature control circuit using a thermistor, characterized in that consisting of) and photo triac (PT), tri tri (T 2 ).
KR1019900022391A 1990-12-29 1990-12-29 Heater water temperature control circuit for using thermistor KR930007784B1 (en)

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Application Number Priority Date Filing Date Title
KR1019900022391A KR930007784B1 (en) 1990-12-29 1990-12-29 Heater water temperature control circuit for using thermistor

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Application Number Priority Date Filing Date Title
KR1019900022391A KR930007784B1 (en) 1990-12-29 1990-12-29 Heater water temperature control circuit for using thermistor

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KR920013069A KR920013069A (en) 1992-07-28
KR930007784B1 true KR930007784B1 (en) 1993-08-19

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