KR970003984Y1 - A water level perception circuit of an washing machine - Google Patents
A water level perception circuit of an washing machine Download PDFInfo
- Publication number
- KR970003984Y1 KR970003984Y1 KR2019940006426U KR19940006426U KR970003984Y1 KR 970003984 Y1 KR970003984 Y1 KR 970003984Y1 KR 2019940006426 U KR2019940006426 U KR 2019940006426U KR 19940006426 U KR19940006426 U KR 19940006426U KR 970003984 Y1 KR970003984 Y1 KR 970003984Y1
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- KR
- South Korea
- Prior art keywords
- water level
- washing machine
- water
- circuit
- amplifying
- Prior art date
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
내용없음No content
Description
제1도는 본 고안 세탁기의 수위감지회로의 회로도1 is a circuit diagram of the water level detection circuit of the present invention washing machine
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 압력센서 2 : 증폭수단1: pressure sensor 2: amplification means
3 : 마이콤 OP1, OP2 : 연상증폭기3: MICOM OP1, OP2: Associative amplifier
R1-R5 : 저항 VR1 : 가변저항R1-R5: resistor VR1: variable resistor
본 고안은 세탁기의 수위감지회로에 관한 것으로, 특히 세탁운전시 수조에 급수되는 수위에 대하여 보다 정확하게 감지하여, 신뢰성있는 수위제어를 할 수 있도록 한 세탁기의 수위감지회로에 관한 것이다.The present invention relates to a water level detection circuit of a washing machine, and more particularly, to a water level detection circuit of a washing machine to more accurately detect the level of water supplied to a water tank during a washing operation, thereby enabling reliable level control.
종래의 세탁기에서 수위감지회로는 급수되는 수위를 LC발진회로나 RC발진회로를 이용하여 감지된 수위값으로 수위제어를 하도록 되어 있었다.In the conventional washing machine, the water level detection circuit is to control the water level to the level value detected using the LC oscillation circuit or RC oscillation circuit.
그러나, 상기 LC발진회로나 RC발진회로의 경우, 발진주파수를 이용하는 관계로, 발진에 의한 주파수변동이 심하게 되어 정확한 수위감지기가 이루어지지 않아 이에 따른 수위제어를 정확하게 할 수 없어 수위제어에 신뢰성이 저하되는 문제점을 가지고 있었다.However, in the case of the LC oscillation circuit or the RC oscillation circuit, since oscillation frequency is used, the frequency fluctuation due to the oscillation is severe, and the accurate level detection is not achieved. Therefore, the level control cannot be precisely performed. Had problems.
본 고안의 목적은 세탁시 수조에 급수되는 수위를 보다 정확하게 감지 하고 제어할 수 있도록 하는 수위감지 제어회로를 제공하고자 하는데 있다.An object of the present invention is to provide a water level detection control circuit that can more accurately detect and control the water level supplied to the water tank during washing.
상기의 목적을 실현하기 위하여 본 발명은 수위감지회로에 있어서, 수관의 공기압을 감지하는 감지수단과, 상기 감지수단에서 감지된 신호에 대하여 잔류편차없이 증폭하는 증폭수단과,In order to achieve the above object, the present invention provides a water level detecting circuit comprising: a sensing means for sensing the air pressure of the water pipe, an amplifying means for amplifying the residual signal with respect to the signal detected by the sensing means;
상기 증폭수단에서 증폭된 신호를 받아 수위를 감지하고 감지에 따른 수위제어하는 마이콤으로 구성하여 정확한 수위제어가 이루어지도록 한 것을 특징으로 한다.Receiving the signal amplified by the amplification means is configured to detect the water level and control the water level according to the detection, characterized in that the accurate level control is made.
이하 첨부된 도면에 의거 본 고안을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제 1도는 본 고안 세탁기의 수위감지회로의 회로도로서,1 is a circuit diagram of the water level detection circuit of the present invention washing machine,
세탁기의 수조와 연통되는 수관의 상부에 장착되어 공기압을 감지하여 전기적인 신호로 변환 감지하는 압력센서(S)인 감지수단 (1)과,A detection means (1) mounted on an upper portion of the water pipe communicating with the water tank of the washing machine, the sensing means (1) being a pressure sensor S for detecting and converting the air pressure into an electrical signal;
상기 감지수단(1)에서 감지된 수위값을 잔류편차없이 증폭하는 연산증폭기(OP1)(OP2), 저항(R1-R5), 가변저항(VR1)으로 구성된 증폭수단(2)과,Amplification means (2) comprising operational amplifiers (OP1) (OP2), resistors (R1-R5), and variable resistors (VR1) for amplifying the level value detected by the sensing means (1) without residual deviations;
상기 증폭수단(2)에서 증폭된 신호로 수위감지하고, 감지된 수위에 대하여 선형적으로 수위제어를 하는 마이콤(3)으로 구성하여서 된 것이다.It is composed of a microcomputer (3) for detecting the water level with the signal amplified by the amplification means (2), and linearly controls the water level with respect to the detected water level.
상기와 같이 구성되는 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention is configured as described above are as follows.
먼저 세탁기에 전원을 인가하게 되면 상기 마이콤(3)에서는 급수구동부(도시되지않음)를 제어하여 급수를 시작하게 된다.First, when power is applied to the washing machine, the microcomputer 3 starts water supply by controlling a water supply driving unit (not shown).
상기와 같이 급수가 시작되면 상기 마이콤(3)에서는 수위를 감지하게 되는데, 이때 수위감지는 수조와 연통되는 수관으로 유입되는 물의 수위에 따라 공기압이 감지수단(1)이 압력센서(S)에 작용하게 되어, 상기 압력센서(S)에서는 작용된 압력신호를 전기적신호로 변환하여 상기 증폭수단(2)인 연산증폭기(OP1)의 분배저항(Rl)(R2)를 통해서 비반전단자(+)에 입력시킴과 아울러 저항(R3)을 통해서 반전단자(-)에 입력시키게 된다.When the water supply starts as described above, the microcomputer 3 detects the water level, and the water level detection acts on the pressure sensor S by the air pressure sensing means 1 according to the water level flowing into the water pipe communicating with the water tank. The pressure sensor S converts the applied pressure signal into an electrical signal to the non-inverting terminal (+) through the distribution resistor Rl (R2) of the operational amplifier OP1, which is the amplifying means 2. In addition to input, it is input to the inverting terminal (-) through the resistor (R3).
따라서 상기 연산증폭기(OP1)에서 입력된 신호를 증폭하고, 증폭된 신호는 출력단을 통해서 연산증폭기(OP2)의 비반전단자(+)에 입력시키게 된다.Accordingly, the signal input from the operational amplifier OP1 is amplified, and the amplified signal is input to the non-inverting terminal (+) of the operational amplifier OP2 through an output terminal.
그러므로 상기 연산증폭기(OP2)에서는 상기 비반전단자(+)에 입력된 신호에 대하여 반전단자(-)에 입력되는 기준설정전압에 의한 가변저항(VR1)으로 잔류편차 없이 증폭하여 마이콤(3)에 입력시키게 된다.Therefore, the operational amplifier OP2 amplifies the signal input to the non-inverting terminal (+) with the variable resistor VR1 by the reference set voltage input to the inverting terminal (-) without residual deviation and amplifies it to the microcomputer 3. Will be entered.
따라서 상기 마이콤(3)에서는 잔류편차없이 정확한 수위값을 감지하게 되므로 신뢰성 있는 수위제어를 할 수 있게 되는 것이다.Therefore, the microcomputer 3 detects an accurate level value without any residual deviation, thereby enabling reliable level control.
이상에서 설명한 바와같이 본 고안은 급수되는 수위를 압력센서를 이용하여 감지하고 감지된 수위값에 대하여 잔류편차없이 증폭된 수위값을 입력하게 되므로, 정확한 수위감지가 이루어지게 되어 신뢰성있는 수위제어를 할 수 있는 효과를 제공하게 되는 것이다.As described above, the present invention detects the water supply level using a pressure sensor and inputs the amplified water level value without residual deviation with respect to the detected water level value, so that accurate water level detection is made so that reliable water level control can be performed. It will provide a possible effect.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940006426U KR970003984Y1 (en) | 1994-03-29 | 1994-03-29 | A water level perception circuit of an washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940006426U KR970003984Y1 (en) | 1994-03-29 | 1994-03-29 | A water level perception circuit of an washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950027608U KR950027608U (en) | 1995-10-18 |
| KR970003984Y1 true KR970003984Y1 (en) | 1997-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940006426U KR970003984Y1 (en) | 1994-03-29 | 1994-03-29 | A water level perception circuit of an washing machine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970003984Y1 (en) |
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1994
- 1994-03-29 KR KR2019940006426U patent/KR970003984Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR950027608U (en) | 1995-10-18 |
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