CN102691194A - Clothes weight sensing device for washing machine and using method of clothes weight sensing device - Google Patents
Clothes weight sensing device for washing machine and using method of clothes weight sensing device Download PDFInfo
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- CN102691194A CN102691194A CN2012101767863A CN201210176786A CN102691194A CN 102691194 A CN102691194 A CN 102691194A CN 2012101767863 A CN2012101767863 A CN 2012101767863A CN 201210176786 A CN201210176786 A CN 201210176786A CN 102691194 A CN102691194 A CN 102691194A
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- washing machine
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- resistance
- weight sensing
- weighing
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Abstract
The invention discloses a clothes weight sensing device for a washing machine and a using method of the clothes weight sensing device. The clothes weight sensing device comprises a weighing device arranged on the washing machine and a weighing circuit connected with the weighing device, wherein the weighing circuit comprises a microprocessor, a varistor and a voltage division protective resistor; the varistor and the voltage division protective resistor are connected in series with each other and are connected with the microprocessor; calculation is performed according to the change of the resistance value of the varistor; and the calculation method is simple.
Description
Technical field
The present invention relates to the washing machine field, particularly laundry of washing machine weight sensing device and method for using.
Background technology
Be provided with the washing machine of clothes weight sensing device in the prior art, at the clothes weight that carries out before the laundry operation can perception being positioned at washtub, and corresponding different clothes weights selects corresponding washing procedure, with more efficient and washing of practicing thrift.But present clothes weight sensing device is through driving the motor rotation that washtub rotates; Utilize counter electromotive force produce related voltage, electric current, and the rotational angle value calculate clothes weight; Computational process is complicated; And if the load condition of clothing in washtub is different, different results can appear in the clothing of same weight.
Therefore, need a kind of new technical scheme to address the above problem.
Summary of the invention
To above-mentioned existing in prior technology problem and shortage, the purpose of this invention is to provide a kind of calculating laundry of washing machine weight sensing device and method for using simply accurately.
For realizing above-mentioned purpose, laundry of washing machine weight sensing device of the present invention can adopt following technical scheme:
A kind of laundry of washing machine weight sensing device comprises the circuit of weighing that is arranged at the weighing device on the washing machine and connects this weighing device, and the said circuit of weighing comprises microprocessor, connects each other and connects the piezo-resistance and the dividing potential drop protective resistance of microprocessor.
The method for using of this laundry of washing machine weight sensing device can adopt following technical scheme:
Clothing is placed on the resistance value that makes piezo-resistance on the weighing device changes, and adopt following formula to obtain output voltage u:
U=[r/ (Ro+r)] * Uo, wherein u is an output voltage, and r is a piezo-resistance, and Ro is the dividing potential drop protective resistance, and Uo is the fixed voltage that is added on piezo-resistance and the dividing potential drop protective resistance;
Output voltage u is input to microprocessor through after the A/D conversion, and the output voltage range that some groups of weight ranges are corresponding is divided into corresponding cloth amount section.
The present invention is compared with prior art: directly confirm the cloth amount section of correspondence through the weight of clothing itself, it is more accurate to calculate, and calculates through the resistance change of piezo-resistance, and computational methods are simple.
Description of drawings
Fig. 1 is the structural representation of the circuit of weighing among the present invention.
Fig. 2 is the principle schematic of the method for using of laundry of washing machine weight sensing device among the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment; Further illustrate the present invention; Should understand the following specific embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Please combine Fig. 1 and shown in Figure 2, the present invention discloses a kind of laundry of washing machine weight sensing device and method for using.Weighing device is set on washing machine and connects the circuit of weighing of this weighing device, the said circuit of weighing comprises microprocessor MCU, connects each other and connects piezo-resistance r and the dividing potential drop protective resistance Ro of microprocessor MCU.Said weighing device is arranged at the washing machine shell top, in particular, is the top that is positioned at the outer casing upper cover plate, to make things convenient for the placement of clothing.This weighing device can be weighing devices such as electronic balance.Method for using does, the resistance value through piezo-resistance is placed on the resistance value that makes piezo-resistance r on the weighing device with clothing and changes, and adopt following formula to obtain output voltage u with the characteristic that the increase of pressure diminishes:
U=[r/ (Ro+r)] * Uo, wherein u is an output voltage, and r is a piezo-resistance, and Ro is the dividing potential drop protective resistance, and Uo is the fixed voltage that is added on piezo-resistance and the dividing potential drop protective resistance;
Output voltage u is input to microprocessor through after the A/D conversion, and the output voltage range that some groups of weight ranges are corresponding is divided into corresponding cloth amount section.Please combine shown in Figure 2, in this embodiment, with clothes weight with 0.5 kilogram multiple as some weight ranges, as 0 ~ 0.5 kilogram as cloth amount section 1; 0.5 ~ 1.0 kilograms as cloth amount section 2, by that analogy, 16 cloth amount sections is set altogether, all corresponding wash time separately of each cloth amount section, and program just can be selected the wash time of correspondence automatically after obtaining cloth amount section.
The present invention is with respect to the advantage of prior art: prior art through voltage, electric current, and the rotational angle value carry out the calculating of clothes weight; And the load condition of clothing in washtub is different; Different results can appear in the clothing of same weight, thereby makes the wash time of procedure Selection also deviation can occur.And the present invention directly confirms corresponding cloth amount section through the weight of clothing itself; It is more accurate to calculate, and calculates through the resistance change of piezo-resistance, and computational methods are simple; And this clothes weight sensing device can be electronic balance commonly used, and is simple in structure and cost is low.
Claims (4)
1. laundry of washing machine weight sensing device; It is characterized in that: comprise the circuit of weighing that is arranged at the weighing device on the washing machine and connects this weighing device, the said circuit of weighing comprises microprocessor, connects each other and connects the piezo-resistance and the dividing potential drop protective resistance of microprocessor.
2. laundry of washing machine weight sensing device as claimed in claim 1 is characterized in that: said weighing device is for being arranged at the washing machine shell top.
3. the method for using of a laundry of washing machine weight sensing device as claimed in claim 1 is characterized in that: clothing is placed on the resistance value that makes piezo-resistance on the weighing device changes, and adopt following formula to obtain output voltage u:
U=[r/ (Ro+r)] * Uo, wherein u is an output voltage, and r is a piezo-resistance, and Ro is the dividing potential drop protective resistance, and Uo is the fixed voltage that is added on piezo-resistance and the dividing potential drop protective resistance;
Output voltage u is input to microprocessor through after the A/D conversion, and the output voltage range that some groups of weight ranges are corresponding is divided into corresponding cloth amount section.
4. the method for using of laundry of washing machine weight sensing device as claimed in claim 3 is characterized in that: with clothes weight with 0.5 kilogram multiple as some weight ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101767863A CN102691194A (en) | 2012-05-31 | 2012-05-31 | Clothes weight sensing device for washing machine and using method of clothes weight sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101767863A CN102691194A (en) | 2012-05-31 | 2012-05-31 | Clothes weight sensing device for washing machine and using method of clothes weight sensing device |
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| Publication Number | Publication Date |
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| CN102691194A true CN102691194A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101767863A Pending CN102691194A (en) | 2012-05-31 | 2012-05-31 | Clothes weight sensing device for washing machine and using method of clothes weight sensing device |
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| CN (1) | CN102691194A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016141734A1 (en) * | 2015-03-12 | 2016-09-15 | 青岛海尔洗衣机有限公司 | Washer bottom foot with automatic weighing structure |
| CN106644174A (en) * | 2017-02-16 | 2017-05-10 | 长沙云涯电子科技有限责任公司 | Resistance value detecting device and method for resistor type temperature sensor |
| CN109750447A (en) * | 2018-11-30 | 2019-05-14 | 珠海格力电器股份有限公司 | Intelligent washing machine control method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055993A (en) * | 1990-04-24 | 1991-11-06 | 建兴科技中心 | Anti-deformation electromagnetic force electronic balance and manufacture method thereof |
| CN1293275A (en) * | 1999-10-15 | 2001-05-02 | 朱苏学 | Washer able to automatically recognize clothes weight and clean level |
| CN101191622A (en) * | 2006-11-30 | 2008-06-04 | 海尔集团公司 | Gas stove with weighing function capable of automatically controlling firepower |
| CN201139157Y (en) * | 2007-11-27 | 2008-10-29 | 李不凡 | Measuring piggy bank |
| CN201428071Y (en) * | 2009-06-10 | 2010-03-24 | 南京乐金熊猫电器有限公司 | Washing-machine with balance indicating device |
-
2012
- 2012-05-31 CN CN2012101767863A patent/CN102691194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055993A (en) * | 1990-04-24 | 1991-11-06 | 建兴科技中心 | Anti-deformation electromagnetic force electronic balance and manufacture method thereof |
| CN1293275A (en) * | 1999-10-15 | 2001-05-02 | 朱苏学 | Washer able to automatically recognize clothes weight and clean level |
| CN101191622A (en) * | 2006-11-30 | 2008-06-04 | 海尔集团公司 | Gas stove with weighing function capable of automatically controlling firepower |
| CN201139157Y (en) * | 2007-11-27 | 2008-10-29 | 李不凡 | Measuring piggy bank |
| CN201428071Y (en) * | 2009-06-10 | 2010-03-24 | 南京乐金熊猫电器有限公司 | Washing-machine with balance indicating device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016141734A1 (en) * | 2015-03-12 | 2016-09-15 | 青岛海尔洗衣机有限公司 | Washer bottom foot with automatic weighing structure |
| US10544534B2 (en) | 2015-03-12 | 2020-01-28 | Qingdao Haier Washing Machine Co., Ltd. | Bottom foot of washing machine with automatic weighing structure |
| CN106644174A (en) * | 2017-02-16 | 2017-05-10 | 长沙云涯电子科技有限责任公司 | Resistance value detecting device and method for resistor type temperature sensor |
| CN109750447A (en) * | 2018-11-30 | 2019-05-14 | 珠海格力电器股份有限公司 | Intelligent washing machine control method and system |
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Application publication date: 20120926 |