KR960006624Y1 - Level detection apparatus - Google Patents
Level detection apparatus Download PDFInfo
- Publication number
- KR960006624Y1 KR960006624Y1 KR92026921U KR920026921U KR960006624Y1 KR 960006624 Y1 KR960006624 Y1 KR 960006624Y1 KR 92026921 U KR92026921 U KR 92026921U KR 920026921 U KR920026921 U KR 920026921U KR 960006624 Y1 KR960006624 Y1 KR 960006624Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fuel tank
- liquid level
- anchor
- negative resistance
- current converter
- Prior art date
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- 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
- G01F23/22—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/246—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices
- G01F23/247—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices for discrete levels
- G01F23/248—Constructional details; Mounting of probes
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
내용없음No content
Description
제1도는 종래의 기술을 설명하려는 액위검지개략장치도1 is a liquid level detection schematic device for explaining the prior art
제2도는 본 고안이 적용된 액위검지개략장치도2 is a liquid level detection schematic diagram of the present invention
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
101 : 연료탱크 102 : 부저항(NTC) 서미스터소자101: fuel tank 102: negative resistance (NTC) thermistor element
105 : 항온가열판 106, 106' : 전류변환기105: constant temperature heating plate 106, 106 ': current converter
107 : 계기판107 instrument panel
본 고안은 비도전성 액체의 액위검지장치에 관한 것으로서 특히 연료탱크의 연료액위상태를 부온도계수 저항체인 부온도(NTC) 서미스터를 이용하여, 비도전성액체의 액위검지와, 액위의 앵커(Anchor) 여부를 간편용이하게 감지할 수 있도록 한 액위검지장치에 관한 것이다.The present invention relates to a liquid level detecting device for a non-conductive liquid. In particular, the fuel level of the fuel tank is measured using a negative temperature coefficient (NTC) thermistor, which is a negative temperature coefficient resistor, and an anchor of the non-conductive liquid. It relates to a liquid level detection device that can easily detect whether or not.
종래의 비도전성 액체의 액위검지장치는 제1도에서와 같이 연료탱크(1)내에 승하강운동을 하는 부구(float)(2)를 설치하고, 부구(2)의 연결대 끝단에는 단자(3)를 설치한 후 이 단자(3)는 가변저항코일(5)을 구비한 검지부(4)와 접촉을 이루도록 하고, 검지부(4)는 전류변환기(6)와 연결하여 계기판(7)과 연결하여 액위(11)에 따라 부구(2)가 작동하여 액위를 검지토록 하였다. 그리고 상기 연료탱크(1)내에는 연료앵커검지소자(9)가 설치된 앵커등캔(8)을 설치한 후 전류변환기(6')를 통해 외부의 앵커등(10)과 연결하여서된 것이다.The liquid level detection device of the conventional non-conductive liquid is provided with a float (2) to move up and down in the fuel tank (1) as shown in Figure 1, the terminal (3) at the end of the connecting rod of the float (2) After installation, the terminal 3 is in contact with the detection unit 4 having the variable resistance coil 5, and the detection unit 4 is connected to the current converter 6 to connect the instrument panel 7 to the liquid level. According to (11), the mouth (2) was operated to detect the liquid level. In addition, the fuel tank 1 is provided with an anchor lamp can 8 in which the fuel anchor detection element 9 is installed, and then connected to an external anchor lamp 10 through a current converter 6 '.
이와같이 구성된 종래의 비도전성 액체의 액위검지장치는 연료탱크(1)내의 액위(11) 상태의 고저에 따라, 부구(2)가 상하강하게 되고 이 부구(2)의 승하강에 의해, 단자(3)가 검지부(4)의 가변저항코일(5)과 접촉하여, 연료탱크(1)내의 액위(11)를 전류변환기(6)를 통해, 전류변화에 따른 값에 의해 계기판(7)에 표시하게 되는 것이다.In the liquid level detecting device of the conventional nonconductive liquid configured as described above, according to the height of the state of the liquid level 11 in the fuel tank 1, the mouth 2 rises up and down and the terminal 3 is moved up and down. In contact with the variable resistance coil 5 of the detection unit 4 so that the liquid level 11 in the fuel tank 1 is displayed on the instrument panel 7 through the current converter 6 by the value according to the current change. Will be.
이때, 상기 부구(2)의 승하강에 따라, 단자(3)가 검지부(4)의 가변저항코일(5)과 접촉을 하면서 저항값이 변화하게 되어, 가변저항코일(5)에 흐르는 전류가 변화하게 되며, 이 전류의 변화는 전류변환기(6')를 통해, 전류 변화에 따른 값을 계기판(7)에 디지탈식으로 표시하는 방식이었다.At this time, the resistance value changes while the terminal 3 contacts the variable resistance coil 5 of the detection unit 4 as the sub-ball 2 moves up and down, and the current flowing through the variable resistance coil 5 is changed. The current change was a method of digitally displaying the value according to the current change on the instrument panel 7 through the current converter 6 '.
그러나, 이와같이 검지방식은 부구(2)의 승하강시 단자(3)가 가변저항코일(5)과 마찰접촉이 이루어 져야만 액위(11)상태를 검지할 수 있도록 되어 있어 잦은 마찰접촉으로 인하여 접촉불량 또는 이물질이 끼고, 부식으로 인해 정확한 액위 상태를 검지할 수 없게되는 폐단이 있었다.However, in the detection method as described above, the terminal 3 should be in friction contact with the variable resistance coil 5 when the lowering and lowering of the float 2, so that the liquid level 11 can be detected. There was a defect that caused foreign matter to enter and the corrosion could not detect the correct level.
그리고 연료앵커검지에 있어서도 연료탱크(1)내에 별도의 연료앵커검지소자(9)가 내장된 앵커등캔(8)를 설치하여, 앵커등(10)의 점등여부에 따라 확인할 수 있도록 한 바, 이는 별도의 앵커등캔(8)등의 설치로 인해 조립이 복잡해지고, 제작단가도 높아지게 되는 문제점이 야기되었다.Also, in the fuel anchor detection, an anchor lamp can 8 having a separate fuel anchor detection element 9 is installed in the fuel tank 1 so that the anchor lamp 10 can be checked according to whether the anchor light 10 is turned on. This caused a problem that the assembly is complicated due to the installation of a separate canned light, such as the can 8, the manufacturing cost is also high.
본 고안은 상기한 종래의 제결점 및 문제점을 해결하기 위하여 관출한 것으로서 본 고안의 그 목적으로는 부수온도계수(NTC) 서미스터 소자를 항온 가열판상에 직렬로 부착하여 소자가 연료탱크내의 연료가 침적시와 노출시의 저항변화량에 따라, 전체 저항값이 선형적으로 변하게 하여 그 변화량에 의해 연료탱크내의 연료량을 감지하는 비도전성 액체 레벨 감지와 동시에 연료의 앵커(Anchor)를 디지탈이나 아날로그로 검출할 수 있도록한 것이 그 특징이다.The present invention has been made to solve the above-mentioned conventional drawbacks and problems, and for this purpose, a secondary temperature coefficient (NTC) thermistor element is attached in series on a constant temperature heating plate so that the element deposits fuel in the fuel tank. According to the resistance change during exposure and exposure, the resistance of the fuel can be detected digitally or analog simultaneously with the detection of the non-conductive liquid level which detects the amount of fuel in the fuel tank by the change of the overall resistance value linearly. It is a feature that makes it possible.
상기의 목적을 달성할 수 있는 본 고안을 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.When the present invention to achieve the above object will be described in detail by the accompanying drawings as follows.
제1도에서와 같이, 연료탱크(101)내에 부저항(NTC) 서미스터소자(102)를 직렬로 연결하고 부저항 서미스터소자(102)의 주위에는 저항 변화를 없애기 위해 항온가열판(105)에 연결설치한다.As shown in FIG. 1, a negative resistance (NTC) thermistor element 102 is connected in series in the fuel tank 101, and connected to the constant temperature heating plate 105 to eliminate resistance change around the negative resistance thermistor element 102. Install.
이때, 부저항 서미스터소자(102)는 연료탱크(101)의 하측부터 상측으로 일정한 간격을 유치하면서 수개설치되며 항온가열판(105)은 액위(111)내의 일정온도를 30-80℃ 유지토록 함이 바람직하다.At this time, the negative resistance thermistor element 102 is installed several times while maintaining a constant interval from the lower side to the upper side of the fuel tank 101, the constant temperature heating plate 105 is to maintain a constant temperature in the liquid level 111 30-80 ℃ desirable.
그리고, 상기 부저항 서미스터소자(102)는 직렬로 연결되게 하여, 전류변환기(106)와 연결하고, 이 전류변환기(106)는 디지탈실 계기판(107)과 연결하여 구성된 것이다.The negative resistance thermistor element 102 is connected in series, connected to the current converter 106, and the current converter 106 is configured to be connected to the digital chamber instrument panel 107.
그리고, 상기 연료탱크(101)내에 직렬연결된 부저항 서미스터소자(102) 중 하측에 연결된 부저항 서미스터소자(102)에는 또 다른 전류변환기(106')와 연결하여 아날로그식 앵커됨을 알려주는 앵커등(110)과 연결하여서된 것이다.In addition, the negative resistance thermistor element 102 connected to the lower side of the negative resistance thermistor element 102 connected in series in the fuel tank 101 is connected to another current converter 106 ', such as an anchor indicating that it is an analog type anchor ( In connection with 110).
이때, 앵커등(110)대신 LED(Light emitted diode) 소자를 이용하여 액위를 검출하는 소자중에 하측에 설치된 소자와 연결된 LED소자 부분은 빨강(Red)표시를 하여주므로서 앵커여부를 감지할 수 있도록 하였다.At this time, the LED element portion connected to the element installed on the lower side of the element for detecting the liquid level by using the LED (Light emitted diode) element instead of the anchor lamp 110 to display the red (Red) to detect whether the anchor It was.
이와같이 구성된 본 고안은 연료탱크(101)내에 액위(111)가 많고 적음에 따라 직렬로 연결된 부저항 서미스터소자(102)의 침전시와 노출시에 따라 저항변화량에 의해 전체저항값이 선형적으로 변화하게 된다.According to the present invention configured as described above, as the liquid level 111 in the fuel tank 101 increases and decreases, the overall resistance value changes linearly by the resistance change amount depending on the precipitation and exposure of the negative resistance thermistor elements 102 connected in series. Done.
이때, 부저항 서미스터소자(102)주위에 설치된 항온가열판(105)은 액위(111)온도에 따른 저항변화를 없애기 위해, 액위내의 일정온도(30-80℃)를 유지토록 한다.At this time, the constant temperature heating plate 105 provided around the negative resistance thermistor element 102 maintains a constant temperature (30-80 ° C.) in the liquid level in order to eliminate the resistance change according to the liquid level 111 temperature.
그리고 상기 변화량을 연료탱크(101)내에 직렬연결된 부저항 서미스터소자(102)의 노출에 따라 변화된 저항값을 전류변환기(106)를 통하여 계기판(107)상에 디지탈방식으로 감지하여 준다.Then, the change amount is sensed in a digital manner on the instrument panel 107 through the current converter 106, the resistance value changed in accordance with the exposure of the negative resistance thermistor element 102 connected in series in the fuel tank 101.
그리고 연료탱크(101)내의 맨하측에 연결된 부저항 서미스터소자(102)에서 액체앵커여부를 감지하면 전류변환기(106')를 거쳐 앵커등(110)에 표시된다.When the negative resistance thermistor element 102 connected to the bottom of the fuel tank 101 detects whether the liquid anchor is present, it is displayed on the anchor lamp 110 through the current converter 106 '.
이때 앵커등(110)은 아날로그 방식으로 표시된다.At this time, the anchor lamp 110 is displayed in an analog manner.
그리고 또 달리 표시되는 방식은 LED소자를 이용하여 액위를 검출하는 연료탱크(101) 하측의 부저항 서미스터소자(102)와 연결된 LED소자 부분은 빨강(Red)표시를 하여주므로서 앵커여부를 감지할 수 있도록 하였다.In addition, another way is to display the LED element portion connected to the negative resistance thermistor element 102 below the fuel tank 101 to detect the liquid level using the LED element to display the red (red) to detect whether the anchor To make it possible.
이상 설명한 바와 같이 연료탱크내에 부저항서미스터소자를 직렬로 설치하고 그 주위의 일정온도를 유지하기 위해 항온가열판을 설치하여 연료탱크내의 액위를 온도를 일정하게 하여, 침전과 노출량에 따라 액위의 변화량을 계기판에 일정하고 확실하게 검지할 수 있도록 함은 물론 연료탱크 하측에 연결된 부저항 서미스터소자에 앵커여부를 감지하는 앵커등을 연결하여 동시에 검지하므로서 조립이 간편용이할 뿐만 아니라 앵커양 검지에 따른 부수장치가 필요없게 되는 매우 유용한 고안이다.As described above, the negative resistance thermistor elements are installed in series in the fuel tank, and a constant temperature heating plate is installed to maintain a constant temperature around the fuel tank, and the liquid level in the fuel tank is kept at a constant temperature. It not only makes it possible to detect the instrument panel consistently and reliably, but also detects whether the anchor is connected to the negative resistance thermistor element connected to the lower side of the fuel tank, and detects it at the same time. It is a very useful design that does not need.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92026921U KR960006624Y1 (en) | 1992-12-28 | 1992-12-28 | Level detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92026921U KR960006624Y1 (en) | 1992-12-28 | 1992-12-28 | Level detection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940016842U KR940016842U (en) | 1994-07-25 |
| KR960006624Y1 true KR960006624Y1 (en) | 1996-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92026921U KR960006624Y1 (en) | 1992-12-28 | 1992-12-28 | Level detection apparatus |
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| Country | Link |
|---|---|
| KR (1) | KR960006624Y1 (en) |
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1992
- 1992-12-28 KR KR92026921U patent/KR960006624Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR940016842U (en) | 1994-07-25 |
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