KR100680311B1 - Manufacturing method of sensor for sensing-moisture - Google Patents

Manufacturing method of sensor for sensing-moisture Download PDF

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KR100680311B1
KR100680311B1 KR1020040114774A KR20040114774A KR100680311B1 KR 100680311 B1 KR100680311 B1 KR 100680311B1 KR 1020040114774 A KR1020040114774 A KR 1020040114774A KR 20040114774 A KR20040114774 A KR 20040114774A KR 100680311 B1 KR100680311 B1 KR 100680311B1
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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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Abstract

본 발명은 수분 감지용 센서의 제조방법에 관한 것으로, 특히 화분의 토양내의 수분의 양을 측정하기 위한 센서에 관한 것으로 주위에서 쉽게 구입할 수 있는 석고를 주 원료로 제작하여 제조단가를 낮출 수 있도록 하며, 간단한 공정에 의해 제조되는 센서를 제공함을 목적으로 하며, 유리섬유와 전분 및 황산칼륨(K2SO4)을 2:1:1로 혼합한 혼합물 1∼5wt.%와 석고분말 95∼99wt.%를 혼합하는 공정과; 상기 공정에서 혼합된 혼합물과 물을 7:10의 비율로 혼합하여 반죽하는 공정과; 상기 공정에서 반죽된 혼합물을 소정의 형상으로 성형하는 공정과; 상기 공정에 의해 제조된 성형물의 양단에 전극을 설치하는 과정과; 상기 공정에 의해 제조되는 센서를 건조하는 공정으로 제조됨을 특징으로 한다.The present invention relates to a method of manufacturing a sensor for detecting water, and more particularly, to a sensor for measuring the amount of water in soil of a pollen, and to reduce the manufacturing cost by making gypsum, which can be easily purchased around, as a main raw material. In order to provide a sensor manufactured by a simple process, a mixture of 1 to 5 wt.% Of a mixture of fiberglass, starch and potassium sulfate (K 2 SO 4 ) in a 2: 1: 1, and 95 to 99 wt. Gypsum powder. Mixing%; Kneading the mixture and water mixed in the above step in a ratio of 7: 10; Molding the kneaded mixture in the step into a predetermined shape; Providing electrodes at both ends of the molded product produced by the above process; It is characterized in that it is manufactured by the process of drying the sensor produced by the process.

수분감지, 센서Moisture sensor, sensor

Description

수분 감지용 센서의 제조방법{Manufacturing method of sensor for sensing-moisture} Manufacturing method of sensor for sensing-moisture             

도 1은 본 발명이 사용되는 예시도1 is an exemplary view in which the present invention is used

본 발명은 수분 감지용 센서의 제조방법에 관한 것으로, 특히 화분의 토양내의 수분의 양을 측정하기 위한 센서에 관한 것이다.The present invention relates to a method of manufacturing a sensor for detecting water, and more particularly, to a sensor for measuring the amount of water in the soil of pollen.

각종 화초를 기르는 가정 또는 직장에서는 화초가 적정한 상태를 유지하도록 적당한 시기에 화초에 물을 주어 양분을 섭취할 수 있도록 일정한 수분을 유지할 수 있도록 하여야 하나, 제때 물을 주지 못하고 분별없이 수시 화분에 물을 주기 때문에 너무 자주 물을 주어 과량의 급수로 인하여 화초들을 죽이는 경우와 오랜기간 물을 주지 않아 화초가 시들고 말라 죽는 폐단이 있었다.In homes or workplaces that grow various plants, the plants should be watered at the appropriate time to maintain the proper condition so that they can receive nutrients. There were watering too often to kill the flowers due to excessive watering, and the plant was dying and drying out for a long time without watering.

이러한 문제점을 해소하기 위하여 근래에는 화분의 흙에 물기가 없거나 화초의 종류에 따라서 화분에 담긴 흙의 습도를 일정하게 유지시키기 위하여 화분내에 습도감지센서를 부착하고 상기 습도감지센서에서 감지된 신호를 마이컴으로 출력하면 마이컴에서 입력되는 신호를 감지하여 판단하고, 이를 외부에 신호하도록 함으로서 화분에 물주는 시기를 알리게 되어 화초 기르기와 물주기에 편리하고 화초기르기에 안전하도록 한 고안이 안출되었다. In order to solve this problem, in recent years, in order to maintain the humidity of the soil in the potted soil or pollen in accordance with the type of plants in order to maintain a constant humidity sensor in the pot and the signal detected by the humidity sensor microcomputer When the output is detected by the microcomputer to detect the input signal and determine the signal to the outside to inform the timing of watering the potted plants devised to make it convenient for planting and watering and safe planting.

그러나 위와 같은 화분에 사용되는 기존의 수분 감지용 센서는 복잡한 구성으로 이루어진 고가의 센서를 사용하므로 코스트를 상승시키는 요인이 되었다.However, the existing moisture detection sensor used in the above pots have been a factor of increasing the cost because they use expensive sensors composed of a complex configuration.

본 발명은 상기와 같은 문제점을 해소하기 위하여 안출한 것으로 간단한 공정에 의해 제조되는 센서를 제공함을 목적으로 한다.The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a sensor manufactured by a simple process.

본 발명의 또 다른 목적은 주위에서 쉽게 구입할 수 있는 석고를 주 원료로 제작하여 제조단가를 낮출 수 있도록 함에 있다.Still another object of the present invention is to reduce the manufacturing cost by making gypsum, which can be easily purchased around, as a main raw material.

상기 목적을 달성하기 위한 본 발명은 유리섬유와 전분 및 황산칼륨(K2SO4)을 2:1:1로 혼합한 혼합물 1∼5wt.%와 석고분말 95∼99wt.%를 혼합하는 공정과; 상기 공정에서 혼합된 혼합물과 물을 7:10의 비율로 혼합하여 반죽하는 공정과; 상기 공정에서 반죽된 혼합물을 소정의 형상으로 성형하는 공정과; 상기 공정에 의해 제조된 성형물의 양단에 전극을 설치하는 과정과; 상기 공정에 의해 제조되는 센서를 건조하는 공정으로 제조됨을 특징으로 한다.The present invention for achieving the above object is a process for mixing a mixture of 1 to 5wt.% And 95 to 99wt.% Gypsum powder and a mixture of glass fiber, starch and potassium sulfate (K 2 SO 4 ) 2: 1: 1 and ; Kneading the mixture and water mixed in the above step in a ratio of 7: 10; Molding the kneaded mixture in the step into a predetermined shape; Providing electrodes at both ends of the molded product produced by the above process; It is characterized in that it is manufactured by the process of drying the sensor produced by the process.

이하, 본 발명의 실시 예를 상세히 설명하면 하기와 같다.Hereinafter, an embodiment of the present invention will be described in detail.

우선 본 발명의 제조과정을 설명하면, 유리섬유와 전분 및 황산칼륨(K2SO4)을 2:1:1로 혼합한 혼합물 1∼5wt.%와 석고분말 95∼99wt.%를 혼합하는 공정과; 상기 공정에서 혼합된 혼합물과 물을 7:10의 비율로 혼합하여 반죽하는 공정과; 상기 공정에서 반죽된 혼합물을 소정의 형상으로 성형하는 공정과; 상기 공정에 의해 제조된 성형물의 양단에 전극을 설치하는 과정과; 상기 공정에 의해 제조되는 센서를 건조하는 공정으로 제조된다.
또한 본 발명은 다른 실시 예로 상기 전극을 설치하기 전의 성형물을 상협하광 형상의 원추형, 사다리꼴 등으로 성형하여 면적이 넓은 저면에 두 개의 전극을 이격되게 배치하여 설치할 수도 있다.First, the manufacturing process of the present invention is described, a process of mixing 1 to 5 wt.% Of a mixture of glass fiber, starch and potassium sulfate (K 2 SO 4 ) in a 2: 1: 1 mixture, and 95 to 99 wt.% Of a gypsum powder. and; Kneading the mixture and water mixed in the above step in a ratio of 7: 10; Molding the kneaded mixture in the step into a predetermined shape; Providing electrodes at both ends of the molded product produced by the above process; It is manufactured by the process of drying the sensor manufactured by the said process.
In another embodiment, the present invention may be formed by arranging two electrodes spaced apart on a bottom surface having a large area by forming a molded product before installing the electrode into a cone, trapezoid, etc. of a light narrowing light shape.

상기 과정에서 유리섬유는 석고를 소정의 형상으로 성형하는 과정에서 성형성을 좋게 하고 성형된 센서의 변형을 방지하는 역할을 수행하게 되는 것이며, 전분은 주로 고구마, 또는 감자전분을 사용하며, 분말석고와 결합하여 성형성을 좋게 한다.In the above process, the glass fiber serves to improve moldability and prevent deformation of the formed sensor in the process of molding gypsum into a predetermined shape, and starch mainly uses sweet potato or potato starch, and powdered gypsum. Combined with to improve the formability.

또한 황산칼륨(K2SO4)은 제조된 센서의 전기적 안정성을 도모하기 위하여 첨가되는 것으로 위와 같은 방법으로 제조되는 센서에 전류가 흐르게 되면 센서의 주성분이 석고이므로 부도체로 작용하지만 황산칼륨(K2SO4)에 의해 미량의 전류가 흐를 수 있게 된다.In addition, potassium sulfate (K 2 SO 4 ) is added to promote the electrical stability of the manufactured sensor. When current flows to the sensor manufactured as described above, the main component of the sensor is gypsum, which acts as an insulator, but potassium sulfate (K 2 SO 4 ) allows a small amount of current to flow.

그러나 상기 센서에 수분이 닿게 되면 석고체가 수분을 흡습하게 되며, 그 전이효과가 빠르게 진행되므로 센서 전체에 골고루 수분을 퍼지게 하는 것이며, 이과정에서 수분에 함유된 미네랄과 철분에 의해 전도성 물질로 바뀌며 센서에 흐르는 전류의 저항값이 변하게 된다.However, when the moisture comes into contact with the sensor, the gypsum absorbs the moisture, and the transition effect is accelerated, so that the moisture is evenly spread throughout the sensor. The resistance value of the current flowing through the filter changes.

따라서 가변저항으로 작용하므로 변하는 저항값에 의해 수분의 함량을 측정할 수 있게 되는 것으로 건조한 상태에서는 부도체로 저항값이 무한대에 가까운 저항값을 가지나, 흡습하는 수분량이 많을수록 저항값이 작아지므로 이를 측정하여 주위의 수분량을 측정할 수 있게 되는 것이다.Therefore, since it acts as a variable resistance, it is possible to measure the moisture content by changing resistance value. In dry state, the resistance value is infinity with insulator, but the resistance value becomes smaller as more moisture absorbs, so the resistance value is measured. The amount of moisture in the surroundings can be measured.

위와 같이 제조된 센서는 도 1에 도시한 바와 같은 방법으로 사용되는 것으로, 저항(R1)과 센서로 사용되는 가변저항(R2)를 직렬로 연결하고 상기 가변저항(R2)의 일단은 접지시키며, 저항(R1)과 가변저항(R2) 사이의 노드에서 A/D컨버터(10)로 연결한다.The sensor manufactured as described above is used in the same manner as shown in FIG. 1, and the resistor R1 and the variable resistor R2 used as the sensor are connected in series, and one end of the variable resistor R2 is grounded. The A / D converter 10 is connected to the node between the resistor R1 and the variable resistor R2.

위와 같이 회로를 연결하고 저항(R1)의 일단에 바이어스 전압을 걸어주면 상기 저항(R1)에 흐르는 전류는 가변저항(R2)에 의해 분압되어 A/D컨버터(10)로 그 값을 출력하게 되는데 상기 가변저항(R2)의 저항값이 바뀌면 A/D컨버터(10)로 송출되는 신호가 가변되므로 가변된 신호를 디지탈신호로 변환하여 마이컴(20)으로 출력하므로 마이컴(20)에서 이를 인식할 수 있도록 한다.
실시예 1.
유리섬유 2wt.%, 전분 1wt.%, 황산칼륨(K2SO4) 1wt.%를 혼합한 혼합물에 석고분말 96wt.%를 혼합한 후 상기 공정에서 혼합된 혼합물(유리섬유 2wt.%, 전분 1wt.%, 황산칼륨(K2SO4) 1wt.%, 석고분말 96wt.%) 100wt.%에 물을 142.85wt.%를 투입하여 반죽한 다음 상기 공정에서 반죽된 혼합물을 직경이 25mm, 길이가 20mm로 되게 원기둥 형상으로 성형한 다음 원기둥 형상의 성형물 양단에 전극을 설치하여 센서를 제조한 후 상온 25℃, 습도 50%±10%의 조건에서 24시간 자연건조한다.When the circuit is connected and the bias voltage is applied to one end of the resistor R1, the current flowing through the resistor R1 is divided by the variable resistor R2 and outputs the value to the A / D converter 10. When the resistance value of the variable resistor R2 is changed, the signal sent to the A / D converter 10 is variable, so that the converted signal is converted into a digital signal and output to the microcomputer 20 so that the microcomputer 20 can recognize this. Make sure
Example 1.
Gypsum powder 96wt.% Was mixed with a mixture of 2wt.% Glass fiber, 1wt.% Starch, and 1wt.% Potassium sulfate (K 2 SO 4 ), followed by the mixture (2wt.% Glass fiber, starch) 1wt.%, Potassium sulfate (K 2 SO 4 ) 1wt.%, Gypsum powder 96wt.%) And 142.85wt.% Of water was kneaded and kneaded in the above process, the kneaded mixture was 25mm in diameter, length After forming into a cylindrical shape to be 20mm, the electrode is installed at both ends of the cylindrical shaped product to prepare a sensor, and then naturally dried for 24 hours at a temperature of 25 ℃ and a humidity of 50% ± 10%.

상기한 바와 같이 본 발명에 의하면 센서를 구성하는 주원료를 석고를 이용하여 제조하므로 저렴한 가격으로 양산할 수 있으며, 제조공정이 간편하여 생산성을 높일 수 있게 되는 것이다.
또한 석고의 성형성이 좋으므로 수요자가 원하는 여러 가지의 형상으로 제조할 수 있는 효과가 있다.As described above, according to the present invention, since the main raw material constituting the sensor is manufactured using gypsum, it can be mass-produced at a low price, and the manufacturing process is simple to increase productivity.
In addition, since the moldability of gypsum is good, there is an effect that can be produced in various shapes desired by the consumer.

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Claims (1)

유리섬유와 전분 및 황산칼륨(K2SO4)을 2:1:1로 혼합한 혼합물 1∼5wt.%와 석고분말 95∼99wt.%를 혼합하는 공정과; 상기 공정에서 혼합된 혼합물과 물을 7:10의 비율로 혼합하여 반죽하는 공정과; 상기 공정에서 반죽된 혼합물을 소정의 형상으로 성형하는 공정과; 상기 공정에 의해 제조된 성형물의 양단에 전극을 설치하는 과정과; 상기 공정에 의해 제조되는 센서를 건조하는 공정으로 제조됨을 특징으로 하는 수분 감지용 센서의 제조방법.Mixing 1 to 5 wt.% Of a mixture of glass fibers, starch and potassium sulfate (K 2 SO 4 ) in a 2: 1: 1 ratio, and 95 to 99 wt.% Of a gypsum powder; Kneading the mixture and water mixed in the above step in a ratio of 7: 10; Molding the kneaded mixture in the step into a predetermined shape; Providing electrodes at both ends of the molded product produced by the above process; The manufacturing method of the sensor for moisture detection, characterized in that the manufacturing process by drying the sensor produced by the process.
KR1020040114774A 2004-12-29 2004-12-29 Manufacturing method of sensor for sensing-moisture KR100680311B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920003052A (en) * 1990-07-27 1992-02-29 박원희 Manufacturing method of polymer humidity sensor by polymer humidity sensor and electrochemical method
KR20010095179A (en) * 2000-03-31 2001-11-03 사토 히로시 Humidity sensor and method for making

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920003052A (en) * 1990-07-27 1992-02-29 박원희 Manufacturing method of polymer humidity sensor by polymer humidity sensor and electrochemical method
KR20010095179A (en) * 2000-03-31 2001-11-03 사토 히로시 Humidity sensor and method for making

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
1019920003052
1020010095179

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