CN207816423U - The washing machine for detection function of weighing with strain - Google Patents
The washing machine for detection function of weighing with strain Download PDFInfo
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- CN207816423U CN207816423U CN201721721786.1U CN201721721786U CN207816423U CN 207816423 U CN207816423 U CN 207816423U CN 201721721786 U CN201721721786 U CN 201721721786U CN 207816423 U CN207816423 U CN 207816423U
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- washing machine
- weighing
- detection function
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Abstract
The utility model provides a kind of washing machine for having and straining detection function of weighing comprising：Fuselage, pedestal, foil gauge, detection circuit, amplifying circuit and MCU chip；Fuselage is mounted on the base, and foil gauge is respectively arranged in the position that pedestal quadrangle is touched with ground, and detection circuit includes：First terminals, the second terminals, third terminals, the 4th terminals, first resistor, second resistance, 3rd resistor, amplifying circuit include：The amplifier chip of 5th terminals, the 6th terminals, the 7th terminals, the 8th terminals, the 4th resistance, the 5th resistance, the 6th resistance, eight pins, any foil gauge is connected by coupled detection circuit with amplifying circuit, and amplifying circuit is connected with the pin of MCU chip.The utility model to perceive weight and passes to MCU chip by the deformation of the foil gauge on four angles of pedestal, has the advantages that accuracy is high, real-time, versatility is good.
Description
Technical field
The utility model is related to a kind of washing machine more particularly to a kind of there is strain to weigh the washing machine of detection function.
Background technology
In the washing machine product washing process for weighing detection function with strain, exist unknown to washing clothing amount size
Problem, and clothing amount is washed to wash time, flooding time, inflow and washing beat important.Still further aspect
Present roller has washing machine all how many kilograms for straining detection function of weighing nominal, but not due to different clothes materials
Together, cause same volume clothing weight different, user can not judge washed clothing weight.Therefore, clothes has been put more and has not only been washed not
Totally but also it can influence with the washing machine service life for straining detection function of weighing.Although existing there is strain to weigh detection
The washing machine some of function has function of weighing, and still, presence can not ensure the accuracy weighed；Installation complexity, function list
One；The problem of versatility, portable difference.Therefore, in view of the above-mentioned problems, it is necessary to propose further solution.
Utility model content
The utility model is intended to provide a kind of washing machine for having and straining detection function of weighing, and is deposited in the prior art with overcoming
Deficiency.
In order to solve the above technical problems, the technical solution of the utility model is：
It is a kind of that there is the washing machine for straining detection function of weighing comprising：Fuselage, foil gauge, detection circuit, is put pedestal
Big circuit and MCU chip；
The fuselage is installed on the pedestal, and the foil gauge is respectively arranged in the pedestal quadrangle and is touched with ground
Position, the detection circuit includes：First terminals, the second terminals, third terminals, the 4th terminals, first resistor,
Second resistance, 3rd resistor, the amplifying circuit include：5th terminals, the 6th terminals, the 7th terminals, the 8th wiring
It holds, the amplifier chip of the 4th resistance, the 5th resistance, the 6th resistance, eight pins, any foil gauge passes through coupled
Detection circuit is connected with the amplifying circuit, and the amplifying circuit is connected with the pin of the MCU chip.
As the improvement with the washing machine for straining detection function of weighing of the utility model, the resistance value of the foil gauge is
120R, the resistance value of first, second and third resistance are the 120R resistance that precision is 1%, and the 4th resistance, the 5th resistance are 10K
Resistance, the 6th resistance is the 49.4R resistance that precision is 1%.
As the utility model have strain weigh detection function washing machine improvement, first terminals with answer
Become piece, the second terminals, first resistor, third terminals to be composed in series all the way, first terminals and second resistance, the 4th
Terminals, 3rd resistor, third group of terminals are at two tunnels, and described to be parallel to the first terminals all the way, two tunnel is parallel to
Three terminals.
As the utility model have strain weigh detection function washing machine improvement, it is defeated in the detection circuit
Enter voltage to input between described first, third terminals, output voltage is exported from the second, the 4th terminals.
As the improvement with the washing machine for straining detection function of weighing of the utility model, the input voltage is MCU
The supply voltage of chip.
As the utility model have strain weigh detection function washing machine improvement, the 5th terminals and the
Four resistance strings are connected to GND, and the 5th terminals are connected with the second pin of the amplifier chip.
As the utility model have strain weigh detection function washing machine improvement, the 6th terminals and the
Five resistance strings are connected to GND, and the 6th terminals are connected with the third pin of the amplifier chip.
As the improvement with the washing machine for straining detection function of weighing of the utility model, the 7th terminals series connection
6th resistance is in the 8th terminals, and the 7th terminals are connected with the first pin of the amplifier chip.
As the improvement with the washing machine for straining detection function of weighing of the utility model, the 8th terminals and institute
The 8th pin for stating amplifier chip is connected.
As the utility model have strain weigh detection function washing machine improvement, the 7th of the amplifier chip the
Pin meets VCC, and the 4th pin meets VEE, and the 5th pin meets GND, and the 6th pin connects the thief hatch of the MCU chip.
Compared with prior art, the utility model has the beneficial effects that：Having for the utility model strains detection work(of weighing
The washing machine of energy to perceive weight and passes to MCU chip by the deformation of the foil gauge on four angles of pedestal, has essence
High, real-time, versatility the is good advantage of exactness.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments described in the utility model, for those of ordinary skill in the art, is not making the creative labor
Under the premise of, other drawings may also be obtained based on these drawings.
Fig. 1 is the stereoscopic schematic diagram with the washing machine for straining detection function of weighing of the utility model；
Fig. 2 is the circuit diagram with detection circuit in the washing machine for straining detection function of weighing of the utility model；
Fig. 3 is the circuit diagram with amplifying circuit in the washing machine for straining detection function of weighing of the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, the utility model provides a kind of washing machine for having and straining detection function of weighing comprising：Fuselage
1, pedestal 2, foil gauge 3, detection circuit 4, amplifying circuit 5 and MCU chip.Any foil gauge 3 is by coupled
Detection circuit 4 be connected with the amplifying circuit 5, the amplifying circuit 5 is connected with the pin of the MCU chip.It is preferred that
Ground, the model SWB66 of the MCU chip.
The fuselage 1 is installed on the pedestal 2, and the foil gauge 3 is respectively arranged in 2 four jiaos of the pedestal and ground phase
The position of contact.Wherein, the foil gauge 3 stretches together with the strain of determinand, and the metal foil of so the inside can be with
It strain to elongate or shorten, since when mechanically elongating or shortening, its resistance can change metal therewith.Therefore, pass through measurement
The variation of resistance and strain is measured, and then the corresponding weight of measuring strain.
In one embodiment, the sensitive grid of foil gauge 3 is chromiumcopper, and resistance change rate is constant, with strain
Direct proportionality.That is, Δ R/R=K × ε.Wherein, R：The former resistance value Ω, Δ R of foil gauge 3：Caused by elongation or compression
Resistance variations Ω, K：Proportionality constant (foil gauge constant), ε：Strain.
As shown in Fig. 2, the detection circuit 4 is used to detect the minor change of the resistance of foil gauge 3, to realize accurate survey
Amount.The detection circuit 4 includes：First terminals, the second terminals, third terminals, the 4th terminals, first resistor R1,
Second resistance R2,3rd resistor R3.
In one embodiment, first terminals connect with foil gauge 3, the second terminals, first resistor R1, third
Line end is composed in series all the way, first terminals and second resistance R2, the 4th terminals, 3rd resistor R3, third terminals
Two tunnels are formed, described to be parallel to the first terminals all the way, two tunnel is parallel to third terminals.Further, the detection
In circuit 4, input voltage is inputted between described first, third terminals, and output voltage is defeated from the second, the 4th terminals
Go out.Preferably, the input voltage is the supply voltage of MCU chip.
At this point, first terminals are connected with foil gauge 3, when having strain to generate, the variable quantity of 3 resistance of foil gauge is remembered
For Δ R, then the calculation formula of output voltage e is as follows：
E=(1/4) * (Δ R/R) * E, i.e.,：E=(1/4) * K* ε * E
In addition to ε is known quantity in above formula, so the big of strain can be calculated if measuring the output voltage of electric bridge
It is small.
The signal that the amplifying circuit 5 is used to export the detection circuit 4 is amplified comprising：5th terminals,
The fortune of 6th terminals, the 7th terminals, the 8th terminals, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, eight pins
Put chip U1.
As shown in figure 3, in one embodiment, the 5th terminals are connected with the 4th resistance R4 is connected to GND, and institute
The 5th terminals are stated with the second pin of the amplifier chip U1 to be connected.6th terminals and the 5th resistance R5 series connections
To GND, and the 6th terminals are connected with the third pin of the amplifier chip U1.The 7th terminals series connection the 6th
Resistance R6 is in the 8th terminals, and the 7th terminals are connected with the first pin of the amplifier chip U1.Described 8th
Terminals are connected with the 8th pin of the amplifier chip U1.The 7th pin of the amplifier chip U1 connects VCC, the 4th pin
VEE is met, the 5th pin meets GND, and the 6th pin connects the thief hatch of the MCU chip.Preferably, the model of the amplifier chip U1
For AD620.
In one embodiment, the resistance value of the foil gauge 3 is 120R, and the resistance value of first, second and third resistance is essence
Degree is 1% 120R resistance, and the 4th resistance R4, the 5th resistance R5 are the resistance of 10K, and the 6th resistance R6 is that precision is
1% 49.4R resistance.
Further, the amplification factor of AD620 chips can be by adjusting the third electricity between the first pin and the 8th pin
The resistance value for hindering R3 realizes the adjusting of amplification factor.The calculation formula of specific amplification factor G is as follows：
For example, AD620 to be made to amplify 1000, then RG is approximately equal to 49.4 Europe.To RGTake 49.4 Europe.It is defeated after so amplifying
The signal magnitude entered to MCU chip is：
This control source is further converted into unit of weight to MCU chip thief hatch, to reach purpose of weighing.
In conclusion the utility model has the washing machine for straining detection function of weighing by being mounted on four angles of pedestal
The deformation of upper foil gauge perceives weight and passes to MCU chip, has the advantages that accuracy is high, real-time, versatility is good.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (10)
1. a kind of there is strain to weigh the washing machine of detection function, which is characterized in that the washing machine includes：Fuselage, is answered at pedestal
Become piece, detection circuit, amplifying circuit and MCU chip；
The fuselage is installed on the pedestal, and the foil gauge is respectively arranged in the position that the pedestal quadrangle is touched with ground
It sets, the detection circuit includes：First terminals, the second terminals, third terminals, the 4th terminals, first resistor, second
Resistance, 3rd resistor, the amplifying circuit include：5th terminals, the 6th terminals, the 7th terminals, the 8th terminals,
The amplifier chip of four resistance, the 5th resistance, the 6th resistance, eight pins, any foil gauge pass through coupled detection
Circuit is connected with the amplifying circuit, and the amplifying circuit is connected with the pin of the MCU chip.
2. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the foil gauge
Resistance value is 120R, and the resistance value of first, second and third resistance is the 120R resistance that precision is 1%, the 4th resistance, the 5th electricity
Resistance is the resistance of 10K, and the 6th resistance is the 49.4R resistance that precision is 1%.
3. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that first wiring
End is composed in series all the way with foil gauge, the second terminals, first resistor, third terminals, first terminals and the second electricity
Resistance, the 4th terminals, 3rd resistor, third group of terminals are at two tunnels, and described to be parallel to the first terminals all the way, two tunnel is simultaneously
It is coupled to third terminals.
4. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the detection circuit
In, input voltage is inputted between described first, third terminals, and output voltage is exported from the second, the 4th terminals.
5. according to claim 4 have the washing machine for straining detection function of weighing, which is characterized in that the input voltage
For the supply voltage of MCU chip.
6. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the 5th wiring
End is connected to GND with the 4th resistance string, and the 5th terminals are connected with the second pin of the amplifier chip.
7. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the 6th wiring
End is connected to GND with the 5th resistance string, and the 6th terminals are connected with the third pin of the amplifier chip.
8. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the 7th wiring
End the 6th resistance of series connection is in the 8th terminals, and the 7th terminals are connected with the first pin of the amplifier chip.
9. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the 8th wiring
End is connected with the 8th pin of the amplifier chip.
10. according to claim 1 have the washing machine for straining detection function of weighing, which is characterized in that the amplifier core
7th pin of piece meets VCC, and the 4th pin meets VEE, and the 5th pin meets GND, and the 6th pin connects the thief hatch of the MCU chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721786.1U CN207816423U (en) | 2017-12-12 | 2017-12-12 | The washing machine for detection function of weighing with strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721786.1U CN207816423U (en) | 2017-12-12 | 2017-12-12 | The washing machine for detection function of weighing with strain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207816423U true CN207816423U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721721786.1U Active CN207816423U (en) | 2017-12-12 | 2017-12-12 | The washing machine for detection function of weighing with strain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870025A (en) * | 2017-12-12 | 2018-04-03 | 江苏新安电器有限公司 | The washing machine for detection function of being weighed with strain |
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2017
- 2017-12-12 CN CN201721721786.1U patent/CN207816423U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870025A (en) * | 2017-12-12 | 2018-04-03 | 江苏新安电器有限公司 | The washing machine for detection function of being weighed with strain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 No. 111 Kangyuan Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Jiangsu Xin'an Electrical Appliance Co., Ltd. Address before: 215000 No. 111 Kangyuan Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Jiangsu Simand Electrical Appliance Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |