KR100407300B1 - Humidity senser control circuit - Google Patents
Humidity senser control circuit Download PDFInfo
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- KR100407300B1 KR100407300B1 KR10-2000-0051677A KR20000051677A KR100407300B1 KR 100407300 B1 KR100407300 B1 KR 100407300B1 KR 20000051677 A KR20000051677 A KR 20000051677A KR 100407300 B1 KR100407300 B1 KR 100407300B1
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
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Abstract
본 발명은 습도센서구동회로에 관한 것으로, 더욱 상세하게는 습도센서의 예열시간을 단축하여, 빠른 동작을 수행할 수 있는 습도센서구동회로에 관한 것이다. 이를 위해서 본 발명에 따른 습도센서구동회로는, 습도센서의 빠른 동작을 위해서, 습도센서의 예열시간대에는 정상 구동전압보다 높은 전압을 인가해서 습도센서를 빠르게 예열시키고, 이후 정상동작이 수행되면서부터는 정상 구동전압에 의한 습도센서의 동작을 제어하는 것을 특징으로 한다.The present invention relates to a humidity sensor driving circuit, and more particularly, to a humidity sensor driving circuit capable of performing a quick operation by shortening the preheating time of the humidity sensor. To this end, the humidity sensor driving circuit according to the present invention, in order to quickly operate the humidity sensor, by applying a voltage higher than the normal driving voltage in the preheating time zone of the humidity sensor to quickly preheat the humidity sensor, after the normal operation is performed since normal It is characterized by controlling the operation of the humidity sensor by the drive voltage.
Description
본 발명은 습도센서구동회로에 관한 것으로, 더욱 상세하게는 습도센서의 예열시간을 단축하여, 빠른 동작을 수행할 수 있는 습도센서구동회로에 관한 것이다.The present invention relates to a humidity sensor driving circuit, and more particularly, to a humidity sensor driving circuit capable of performing a quick operation by shortening the preheating time of the humidity sensor.
습도센서는, 공기 중 또는 밀폐된 공간 내부의 습도량을 검출하기 위한 센서이다. 상기 습도센서는, 습도 제어에 의해 요리를 수행하는 전자레인지, 습도 제어에 의해서 실내공기를 쾌적하게 제어하는 공기조화기, 및 가습기 등, 기타 여러가지 전자기기에 제어를 위한 기초자료를 검출하기 위한 용도로 많이 사용되고 있다.The humidity sensor is a sensor for detecting the amount of humidity in the air or inside an enclosed space. The humidity sensor is used for detecting basic data for controlling various electronic devices such as a microwave oven for cooking by humidity control, an air conditioner for comfortably controlling indoor air by humidity control, and a humidifier. It is used a lot in.
종래의 습도센서구동회로는, 도 1에 도시하고 있는 바와 같이, +15볼트 구동전압이 저항(R4)과 콘덴서(C5)를 통해서 습도센서(20)에 공급되어서, 동작전원으로 이용되고 있다. 그리고 상기 습도센서(20)의 검출동작은, 상기 습도센서(20)에 저항(R1,R2,R3)을 통해서 연결되고 있는 마이크로프로세서(25)가 검출하고 있다.In the conventional humidity sensor driving circuit, as shown in FIG. 1, a +15 volt driving voltage is supplied to the humidity sensor 20 through the resistor R4 and the condenser C5 and used as an operating power source. The detection operation of the humidity sensor 20 is detected by the microprocessor 25 connected to the humidity sensor 20 through the resistors R1, R2, and R3.
즉, 15볼트의 전압이 공급되어 습도센서(20)가 예열이 이루어지고, 습도센서(20)의 예열동작이 완료된 다음부터 상기 습도센서(20)가 정상적으로 동작하면서, 상기 습도센서(20)에 의해서 검출되는 습도량에 따라서 변화되는 전압값이 마이크로프로세서(25)에서 검출되는 것이다. 따라서 상기 마이크로프로세서(25)는, 습도센서(20)의 동작에 따라서 검출되는 전압값에 기초하여, 습도량을 검출하게 되는 것이다.That is, the voltage of 15 volts is supplied, the humidity sensor 20 is preheated, and after the preheating operation of the humidity sensor 20 is completed, the humidity sensor 20 operates normally, the humidity sensor 20 The voltage value that changes according to the amount of humidity detected by the microprocessor 25 is detected. Therefore, the microprocessor 25 detects the amount of humidity based on the voltage value detected according to the operation of the humidity sensor 20.
그러나 종래의 제어회로에 의한 습도센서의 동작은, 예열시간이 긴 문제점이 있었다. 즉, 종래의 습도센서제어회로는, 15볼트의 구동전압을 이용하여, 습도센서를 구동시키기 때문에, 도 4에 도시되고 있는 바와 같이, 약 20초 정도의 예열시간을 필요로 하였다.However, the operation of the humidity sensor by the conventional control circuit has a long preheating time. That is, the conventional humidity sensor control circuit drives the humidity sensor using a driving voltage of 15 volts, and thus requires a preheating time of about 20 seconds as shown in FIG.
따라서 종래의 습도센서구동회로는, 습도센서(20)가 빠른 시간에 동작을 하지 못하므로서, 결과적으로 습도센서를 이용한 제어요리에서 제어오차가 발생하거나 또는 요리시간이 필요 이상으로 길어지는 문제점이 발생되었다.Therefore, in the conventional humidity sensor driving circuit, the humidity sensor 20 does not operate at a short time, and as a result, a control error occurs in a control dish using a humidity sensor or a cooking time is longer than necessary. It became.
따라서 본 발명의 목적은, 습도센서의 예열시간을 단축할 수 있는 습도센서구동회로를 제공함에 있다.Accordingly, an object of the present invention is to provide a humidity sensor driving circuit which can shorten the preheating time of the humidity sensor.
도 1은 종래 기술에 따른 습도센서구동회로도,1 is a humidity sensor driving circuit according to the prior art,
도 2는 본 발명에 따른 습도센서구동회로도,2 is a humidity sensor drive circuit according to the invention,
도 3은 본 발명에 따른 동작 흐름도,3 is an operation flowchart according to the present invention;
도 4는 습도 센서 구동에 따른 예열 그래프.Figure 4 is a preheating graph according to the humidity sensor drive.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
30 : 마이크로프로세서 35 : 습도센서회로30: microprocessor 35: humidity sensor circuit
Q1,Q2 : 트랜지스터 D14,D15 : 다이오드Q1, Q2: Transistor D14, D15: Diode
R1,R2 : 저항 10,15,33,34 : 레귤레이터R1, R2: Resistor 10,15,33,34: Regulator
상기 목적을 달성하기 위한 본 발명에 따른 습도센서구동회로는, 제품 내부로 입력되는 공급전원단에 연결되어서 제 1 전원과 제 2 전원보다 높은 제 2 전원을 발생시키는 전원회로를 구비한 습동센서구동회로에 있어서, 상기 제 1, 2전원에 연결된 저항을 통해서 동작초기에는 제 2 전원을, 소정시간이 경과하면 제 1 전원을 공급받아서 구동되어 습도량 검출을 위한 습도센서회로와; 상기 제 2 전원과 상기 습도센서회로 사이에 제 1 트랜지스터와 제 1 다이오드가 직렬 연결되고, 상기 습도센서의 동작 초기에 상기 제 2 전원을 공급하는 예열전압공급부와; 상기 예열전압공급부의 제 1 트랜지스터에 연결된 제 2 트랜지스터로 구성되고, 상기 예열전압공급부를 구동시키기 위한 동작신호를 출력하는 구동수단과; 상기 습도센서회로의 동작 초기에 상기 구동수간에 신호를 출력하여 제 1,2 트랜지스터를 턴-온 시키고, 소정시간이 경과하면 상기 구동수단의 신호를 차단해서 제 1,2 트랜지스터를 턴-오프시키는 마이크로프로세서를 포함하여 구성된다.Humidity sensor drive circuit according to the present invention for achieving the above object, the sliding sensor drive circuit having a power supply circuit connected to a supply power supply input into the product to generate a second power higher than the first power supply and the second power supply. A humidity sensor circuit comprising: a humidity sensor circuit for driving a second power source and a first power source when a predetermined time elapses through a resistor connected to the first and second power sources to detect a humidity level; A preheating voltage supply unit connected to the first transistor and the first diode in series between the second power supply and the humidity sensor circuit and supplying the second power at an initial operation of the humidity sensor; Drive means composed of a second transistor connected to a first transistor of the preheat voltage supply unit, and outputting an operation signal for driving the preheat voltage supply unit; A signal is output between the driving numbers at the beginning of the operation of the humidity sensor circuit to turn on the first and second transistors, and when a predetermined time elapses, the signal of the driving means is cut off to turn off the first and second transistors. It is configured to include a microprocessor.
이하 첨부한 도면을 참조하여 본 발명에 따른 습도센서구동회로에 대해서 상세하게 설명한다.Hereinafter, a humidity sensor driving circuit according to the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 습도센서구동회로의 구성도이다.2 is a configuration diagram of a humidity sensor driving circuit according to the present invention.
본 발명의 습도센서회로(35)는, 예열을 위한 동작시에는 20볼트의 전압을 사용하고 있고, 습도센서회로(35)의 예열이 완료된 후부터는 정상적인 구동전압인 15볼트를 이용하고 있다.In the humidity sensor circuit 35 of the present invention, a voltage of 20 volts is used for preheating operation, and 15 volts, which is a normal driving voltage, is used after the preheating of the humidity sensor circuit 35 is completed.
즉, 도 2에 도시하고 있는 바와 같이, 습도센서회로(35)는, 15볼트 구동전압을 다이오드(D15)와 저항(R1)을 통해서 공급받고 있다. 상기 저항(R1)을 통해 공급받는 15볼트 구동전압은, 상기 습도센서회로(35)가 정상동작을 수행하면서부터 구동전압으로 이용된다.That is, as shown in FIG. 2, the humidity sensor circuit 35 receives the 15-volt driving voltage through the diode D15 and the resistor R1. The 15-volt driving voltage supplied through the resistor R1 is used as the driving voltage since the humidity sensor circuit 35 performs normal operation.
또한, 상기 습도센서회로(35)는, 트랜지스터(Q1)과 다이오드(D14)를 통해서 20볼트의 구동전압에 연결되고 있다. 이때 트랜지스터(Q1)는 PNP 형 트랜지스터이며, 상기 트랜지스터(Q1)의 콜렉터단자가 상기 다이오드(D14)를 통해서 습도센서회로(35)에 연결되며, 베이스단자는 또 다른 트랜지스터(Q2)의 콜렉터단자에 연결되고 있다.In addition, the humidity sensor circuit 35 is connected to a driving voltage of 20 volts through the transistor Q1 and the diode D14. At this time, the transistor Q1 is a PNP type transistor, the collector terminal of the transistor Q1 is connected to the humidity sensor circuit 35 through the diode D14, and the base terminal is connected to the collector terminal of another transistor Q2. It is connected.
상기 트랜지스터(Q2)는 상기 20볼트의 구동전압을 구동하기 위한 구동소자이다. 상기 트랜지스터(Q2)의 에미터단자는 그라운드전위에 연결되고, 베이스단자는 마이크로프로세서(30)의 출력단자에 연결된다.The transistor Q2 is a driving device for driving the driving voltage of 20 volts. The emitter terminal of the transistor Q2 is connected to the ground potential, and the base terminal is connected to the output terminal of the microprocessor 30.
그리고 상기 습도센서회로(35)의 검출 습도량은 저항(R2)를 통해서 마이크로프로세서(30)에 입력된다.The amount of detected humidity of the humidity sensor circuit 35 is input to the microprocessor 30 through the resistor R2.
상기 다이오드(D15)는, 20볼트 예열전압이 습도센서회로(35)에 공급될 때, 역전류를 방지하기 위한 소자이며, 상기 다이오드(D14)는 15볼트 구동전압이 습도센서회로(35)에 공급될 때, 역전류를 방지하기 위한 소자이다.The diode D15 is a device for preventing reverse current when a 20 volt preheat voltage is supplied to the humidity sensor circuit 35, and the diode D14 is a 15 volt drive voltage applied to the humidity sensor circuit 35. When supplied, it is an element for preventing reverse current.
그리고 마이크로프로세서(30)에 연결되고 있는 또 다른 전원단은, 제품 내 시스템에서 필요로 하는 정격전원을 발생시키기 위한 전원회로들이다.Another power stage connected to the microprocessor 30 is power circuits for generating the rated power required by the system in the product.
다음은 상기 구성으로 이루어진 본 발명에 따른 습도센서구동회로의 동작과정에 대해서 설명한다.Next will be described the operation of the humidity sensor drive circuit according to the present invention having the above configuration.
도 3은 본 발명에 따른 습도센서 구동회로의 동작 흐름도이다.3 is an operation flowchart of the humidity sensor driving circuit according to the present invention.
습도센서회로(35)의 구동이 필요로 할때, 마이크로프로세서(30)는 출력단자를 통해서 20볼트 전압을 구동하기 위한 제어신호를 출력한다(제 100 단계). 상기 제 100 단계에서 출력되는 제어신호는 트랜지스터(Q2)를 턴-온 상태로 제어하고, 이에 연동해서 트랜지스터(Q1)도 턴-온 된다.When the humidity sensor circuit 35 needs to be driven, the microprocessor 30 outputs a control signal for driving a 20 volt voltage through the output terminal (step 100). The control signal output in step 100 may control the transistor Q2 to be turned on, and the transistor Q1 may be turned on in conjunction with the control signal.
상기 트랜지스터(Q1)이 턴-온 되면, 20볼트의 구동전압은 다이오드(D14)를 도통시키면서 저항(R1)을 통해 습도센서회로(35)에 공급되어진다. 이때 공급되는 20볼트의 전압에 의해서 습도센서회로(35)는 예열된다.When the transistor Q1 is turned on, a driving voltage of 20 volts is supplied to the humidity sensor circuit 35 through the resistor R1 while conducting the diode D14. At this time, the humidity sensor circuit 35 is preheated by the supplied voltage of 20 volts.
한편, 마이크로프로세서(30)는 상기 출력단자로 20볼트 구동전압을 출력하면서부터 시간을 카운트하고, 습도센서회로(35)에 예열전압이 공급된지 10초가 경과되는 시점에서 20볼트 전압을 구동하기 위한 제어신호를 차단한다(제 110 단계). 즉, 습도센서의 예열이 완료되는 시점이다.Meanwhile, the microprocessor 30 counts the time from outputting the 20 volt driving voltage to the output terminal, and drives the 20 volt voltage when 10 seconds have elapsed since the preheating voltage was supplied to the humidity sensor circuit 35. The control signal is blocked (step 110). That is, it is time to complete the preheating of the humidity sensor.
이때 트랜지스터(Q2)의 베이스단자에는 로우신호가 인가되면서, 트랜지스터(Q2)는 턴-오프 상태로 절환된다. 이와 연동해서 트랜지스터(Q1)도 턴-오프된다. 따라서 상기 습도센서회로(35)에 공급되는 20볼트의 전압은 차단되는 것이다(제 120 단계).At this time, while the low signal is applied to the base terminal of the transistor Q2, the transistor Q2 is switched to the turn-off state. In conjunction with this, the transistor Q1 is also turned off. Therefore, the voltage of 20 volts supplied to the humidity sensor circuit 35 is cut off (step 120).
그러나 15볼트의 구동전압이 저항(R1)을 통해서 습도센서회로(35)에 계속해서 공급되고 있기 때문에, 상기 습도센서회로(35)는 예열동작이 완료된 직후부터 15볼트 전압에 의해서 동작을 계속 수행하게 되는 것이다.However, since the 15-volt driving voltage is continuously supplied to the humidity sensor circuit 35 through the resistor R1, the humidity sensor circuit 35 continues to operate by the 15-volt voltage immediately after the preheating operation is completed. Will be done.
즉, 본 발명은, 습도센서회로(35)의 빠른 예열동작을 위해서, 구동 초기에는 20볼트의 전압을 이용하고, 습도센서회로(35)가 정상동작상태가 된 이후부터는 종래와 동일한 15볼트의 구동전압을 이용할 수 있도록 회로를 구성하고 있는 것이다.That is, the present invention uses a voltage of 20 volts at the beginning of driving for fast preheating operation of the humidity sensor circuit 35, and after the humidity sensor circuit 35 is in a normal operating state, The circuit is configured to use the driving voltage.
따라서 본 발명은 도 4에 도시하고 있는 바와 같이, 종래와 비교해서 1/2로 단축된 예열시간을 얻게 되었다.Therefore, as shown in FIG. 4, the present invention obtains a preheating time shortened by 1/2 compared with the conventional method.
이상 설명한 바와 같이 본 발명에 따른 습도센서구동회로는, 습도센서의 빠른 동작을 위해서, 습도센서의 예열시간대에는 정상 구동전압보다 높은 전압을 인가해서 습도센서를 빠르게 예열시키고, 이후 정상동작이 수행되면서부터는 정상 구동전압에 의한 습도센서의 동작을 제어하고 있다. 따라서 본 발명은 습도센서의 사용에 따른 시간 로스(loss)를 최소화할 수 있는 잇점을 얻게 된다.As described above, the humidity sensor driving circuit according to the present invention, in order to quickly operate the humidity sensor, preheats the humidity sensor by applying a voltage higher than the normal driving voltage in the preheating time zone of the humidity sensor, and then the normal operation is performed. From now on, the humidity sensor is controlled by the normal driving voltage. Therefore, the present invention has an advantage of minimizing time loss due to the use of the humidity sensor.
이와 같은 단축된 예열시간은 특히, 전자레인지와 같이 빠른 시간 내에 요리를 수행해야 하는 전자기기에서 최적으로 이용될 수 있을 것이다. 즉, 몇초에서 몇분 단위로 요리를 수행하는 전자레인지는, 습도센서의 단축된 예열시간이 요리시간에 반영되므로 인하여, 전체 요리시간을 단축시키는 효과를 얻게 된다.This shortened preheating time may be optimally used, especially in electronic devices that require cooking in a short time, such as a microwave oven. That is, in the microwave oven which cooks every few seconds to several minutes, the shortened preheating time of the humidity sensor is reflected in the cooking time, thereby reducing the overall cooking time.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0051677A KR100407300B1 (en) | 2000-09-01 | 2000-09-01 | Humidity senser control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2000-0051677A KR100407300B1 (en) | 2000-09-01 | 2000-09-01 | Humidity senser control circuit |
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| KR20020018388A KR20020018388A (en) | 2002-03-08 |
| KR100407300B1 true KR100407300B1 (en) | 2003-11-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005218Y1 (en) * | 1987-11-20 | 1991-07-22 | 미츠비시 덴키 가부시키가이샤 | Circuit brekaer |
| KR940010818A (en) * | 1992-10-27 | 1994-05-26 | 고까지 아끼라 | Signal processing systems |
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2000
- 2000-09-01 KR KR10-2000-0051677A patent/KR100407300B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005218Y1 (en) * | 1987-11-20 | 1991-07-22 | 미츠비시 덴키 가부시키가이샤 | Circuit brekaer |
| KR940010818A (en) * | 1992-10-27 | 1994-05-26 | 고까지 아끼라 | Signal processing systems |
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