CN1690291B - Washing machine weighing method and washing machine for realizing the method - Google Patents
Washing machine weighing method and washing machine for realizing the method Download PDFInfo
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- CN1690291B CN1690291B CN 200410062531 CN200410062531A CN1690291B CN 1690291 B CN1690291 B CN 1690291B CN 200410062531 CN200410062531 CN 200410062531 CN 200410062531 A CN200410062531 A CN 200410062531A CN 1690291 B CN1690291 B CN 1690291B
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- piston rod
- coil
- washing machine
- shock absorber
- displacement transducer
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- 238000005303 weighing Methods 0.000 title claims abstract description 45
- 238000005406 washing Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 49
- 238000013016 damping Methods 0.000 claims abstract description 41
- 239000006096 absorbing agent Substances 0.000 claims abstract description 26
- 230000035939 shock Effects 0.000 claims abstract description 26
- 238000012856 packing Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 3
- 230000002051 biphasic effect Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The invention discloses a method for weighing washing machine and a washing machine which help realize this method, comprising frame, outer cylinder, two resilient supporting shock absorber, inner cylinder, and electromechanical transmission. Wherein, one resilient supporting shock absorber is air damping type with displacement sensor, formed by cylinder with link ring, formor fixed on the cylinder, coil, coil interface, ferromagnetic with link ring and inner hole, and packing ring. The displacement sensor via the weighing unit connects the microprocessor, and the weighing unit comprising circuits and interface of rectification, low-pass filtration, high-gain amplification, production of time sequence, and square wave, integrates the displacement sensor and the air damping shock absorber. The invention can detect amount of clothes and water inflow, with simple structure, low cost, and high accuracy, and it can be widely use in barrel washing machine.
Description
Technical field
What the present invention relates to is a kind of Weighing method of washing machine, the washing machine of the described method of realization, specifically, what the present invention relates to is the Weighing method that a kind of signal that utilizes the displacement transducer collection on the damper obtains substrate product weight after treatment, and the washing machine of realizing described method, be particularly useful for roller washing machine.
Background technology
In the prior art, be equiped with two resiliency supported shock absorbers between the base of roller washing machine tube bottom and outer case outside it, described resiliency supported shock absorber comprise spring, hydraulic damping and air damp type.The damper of described prior art can be referring to CN2519049Y, CN2345773Y, JP5300992A, JP2002200392A, CN2422320Y etc.
The damper identical with structure of the present invention is WO01/27375, and still, the document does not have the circuit of open how check weighing and the enhancing structure of piston lever of reducer.
Summary of the invention
Main purpose of the present invention is to provide a kind of method for measuring weight;
Another object of the present invention is to provide a kind of washing machine of realizing described method;
A further object of the present invention is to provide a kind of washing machine that strengthens piston lever of reducer that has.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the schematic diagram of air damping damper.
Fig. 3 is the schematic diagram that has the air damping damper of displacement transducer.
Fig. 4 is its electrical principle block diagram.
Fig. 5 is the schematic diagram of described enhancing structure piston rod.
Fig. 6 is the characteristic curve diagram of described displacement transducer.
Fig. 7 is the interface sequence schematic diagram of MCU.
To achieve these goals, described washing machine should comprise at least casing, is installed in mechanical supporting device between casing and the urceolus, is installed in interior cylinder in the urceolus, is installed in motor and transmission device thereof between casing and the urceolus, is installed in and advances drainage mechanism and electric control system on the casing.
Mechanical supporting device comprises two resiliency supported shock absorbers between the base that is installed in urceolus bottom and casing. One of them resiliency supported shock absorber is the air damping damper, by the end with the cylinder block of connecting ring, be sleeved in the cylinder block and the end is formed with the piston rod of connecting ring, the piston packing ring that is sleeved on the piston rod other end.
Another resiliency supported shock absorber is the air damping damper with displacement transducer, by the end with the cylinder block of connecting ring, be fixed on bobbin on the cylinder block axial line, be installed in the bobbin peripheral part coil, be produced on coil interface that the cylinder block outside is connected with coil, be sleeved in the cylinder block and the end is formed with the piston rod of connecting ring, the piston packing ring that is sleeved on the piston rod other end. Piston rod is made by ferromagnetic material, and its end is with the endoporus that can make the turnover of bobbin and coil.
During work, insert in the endoporus of piston rod with the bobbin of the air damping damper of displacement transducer and the coil that is installed on it. When adding clothing or water inlet, the weight of urceolus and interior cylinder increases, and is added in the air damping damper of installation and with the increasing of the gravity on the air damping damper of displacement transducer, forces it to lower compression. Air between its cylinder block and piston rod, the piston packing ring is compressed, and damping force increases, until balance.
The air damping damper that has displacement transducer has produced displacement between coil and the ferromagnetic material piston rod when lower compression, the inductance value of coil must change.So it is detected and transfer to Weighing module that displacement just is converted to inductance value.
The damping force (elastic force) of air damping damper and the air damping damper that has displacement transducer is identical or close.This left and right sides balance that keeps urceolus and interior cylinder, minimizing is vibrated and is weighed accurately.
The output of displacement transducer is connected with Weighing module with two inputs, and Weighing module is connected with the microprocessor of electric control system.
Weighing module comprises the rectification circuit that is connected with the output of displacement transducer, the low pass filter that is connected with rectification circuit, the high-gain amplifier that is connected with low pass filter, the timing sequence generating circuit that is connected with high-gain amplifier with low pass filter, the square wave generation circuit that is connected with timing sequence generating circuit, with timing sequence generating circuit microprocessor linked interface circuit.
Square wave generation circuit is connected with two inputs of displacement transducer, and the MPI circuit is connected with microprocessor with high-gain amplifier.
Weighing module internally produces the control signal of high accurate clock signal, various clock signal, wave filter/amplifier; Externally then produce to measure and use the biphasic square wave signal, and be connected to the interface circuit of microprocessor MCU.
Weighing module at first carries out rectification to the AC signal that feeds back, and square-wave signal is transformed into direct current signal; Then direct current signal is made LPF, the filtering High-frequency Interference; Carry out high-gain at last and amplify, obtain the output signal of suitable amplitude.
Weighing module is provided with outside MCU interface circuit, interface circuit is the form of the two-way I/O of IBIT, MCU is when starting Weighing module work, at first, export a low level time greater than the 10mS negative pulse, then, transfer the I/O mouth to rising edge that the START signal is waited in input, after detecting rising edge, MCU can use the A/D OUT signal measurement weight of module.Circuit structure is the Lou output of opening of band internal pull-up resistor.
Weighing module and MCU, air damping damper and the air damping damper that has a displacement transducer match, and under the control of MCU, finish the weighing to clothes weight and/or inflow, have realized the automatic function of weighing of roller washing machine.
Each parts in the Weighing module can be integrated into whole integrated circuit circuit.
Task of the present invention comes to this and finishes.
The present invention unites two into one displacement transducer and air damping damper, after utilizing the signal of displacement transducer output then and handling accordingly, can be converted into actual weight, can observing and controlling laundry amounts and/or inflow by this method, described method realizes simple, corresponding component structure is simple, and cost is low, and precision is higher.It can be widely used in the roller washing machine.
The specific embodiment
Embodiment 1.A kind of roller washing machine that is provided with weighing device, as shown in Figure 1.It comprises casing 1, be installed in mechanical supporting device 3 between casing 1 and the urceolus 2, be installed in interior cylinder 4 in the urceolus 2, be installed in motor and transmission device thereof between casing 1 and the urceolus 2, be installed in and advance drainage mechanism and electric control system 5 on the casing 1.Mechanical supporting device 3 comprises two resiliency supported shock absorbers 6 between the base that is installed in urceolus 2 bottoms and casing 1.
Shown in Figure 2, one of them resiliency supported shock absorber is the air damping damper.It by the end have connecting ring 7 cylinder block 8, be sleeved in the cylinder block 8 and the end has the piston rod 10 of connecting ring 9, the piston packing ring 11 that is sleeved on piston rod 10 other ends is formed.
Shown in Figure 3, wherein another resiliency supported shock absorber is the air damping damper that has displacement transducer.It by the end have connecting ring 12 cylinder block 13, be fixed on bobbin 14 on the axial line of cylinder block 13, be installed in bobbin 14 peripheral parts coil 15, be produced on coil interface 16 that cylinder block 13 outsides are connected with coil 15, be sleeved in the cylinder block 13 and the end has the piston rod 18 of connecting ring 17, the annular element 21 that is sleeved on the piston packing ring 19 of piston rod 18 other ends and is inlaid in this end is formed.
Piston rod 18 is injection molded by engineering material usually, one endoporus 20 along the bar central axis is arranged at the center of piston rod, when making bobbin 14 and coil 15 enter wherein because of displacement, bobbin 14 and coil 15 can be freely moved therein, circularize part 21 by ferromagnetic material embedded one of the front end of endoporus 20.
Described piston rod 18, in the prior art, common four rib modes or the smooth cylinder mode that adopts, this mode may cause the intensity decreases of piston rod 18 and piston rod 18 is swung along the axis normal direction, in order to overcome such defective, researcher of the present invention has adopted along piston rod 18 axis sheet ribs 22 with along the mode of the sheet ribs 23 of piston rod 18 axis normal directions, has adopted the piston rod of this mode can overcome prior art and has had the ground defective.
Usually, be the 3-9 sheet along the sheet ribs 22 of axis direction, be the 2-7 sheet along the sheet ribs 23 of axis normal direction; Preferably the sheet ribs 22 along axis direction is 7, is 5 along the sheet ribs 23 of axis normal direction.
Profile and cylinder block 13 along the sheet ribs 22 of axis direction are slidingly matched, and should be lower than sheet ribs 1-5mm along axis direction along the height of the sheet ribs 23 of axis normal direction, this be because, if highly consistent, may cause the air-tightness between piston rod 18 and the cylinder block 13 inconsistent.
Simultaneously, though the ring-shaped article 21 of piston rod 18 ends and cylinder block 13 be slidingly matched,, on described ring-shaped article, through hole should be arranged, like this, air-tightness is held by piston packing ring 19 fully, can realize the uniformity of height.
Above-mentioned air damping damper is close with the damping force of the air damping damper that has displacement transducer, can make urceolus 2 and interior cylinder 4 left and right sides balances, and it is accurate that minimizing is vibrated, weighed.
Shown in Figure 4, the output 22 of displacement transducer 21 is connected with Weighing module 24 with two inputs 23, and Weighing module 24 also is connected with the microprocessor 25 of electric control system 5.
Weighing module 24 comprises the rectification circuit 26 that is connected with the output 22 of displacement transducer 21, the low pass filter 27 that is connected with rectification circuit 26, the high-gain amplifier 28 that is connected with low pass filter 27, the timing sequence generating circuit 29 that is connected with high-gain amplifier 28 with low pass filter 27, the square wave generation circuit 30 that is connected with timing sequence generating circuit 29, with timing sequence generating circuit 30 microprocessor linked interface circuits 31.Square wave generation circuit 30 is connected with two inputs 23 of displacement transducer 21, and MPI circuit 31 is connected with microprocessor 25 respectively with high-gain amplifier 28.Weighing module 24 is a kind of integrated circuit circuit that can be integrated into integral body.
Wherein, XIN among Fig. 4 in the Weighing module of 24 representatives is the feedback signal (input of 5V---+5V square-wave signal) of input displacement transducer, XOUT is the square-wave signal (output of 0-5V square wave) that outputs to displacement transducer, A/D OUT is check weighing measuring-signal output (1.5-4.5V output, 1000 ohm of output impedance), VCC is power supply (4.75-5.25V), and GND is a ground connection, START measures for the I/O check weighing and starts (0-5V, internal pull-up resistor), handshake.
As the vitals that signal is provided, the displacement transducer in the method for measuring weight of the present invention has following index: its simulation output is smaller or equal to positive and negative 3.5V; When measurement category in positive and negative 25.5mm, its linearity is positive and negative 1.5%, its sensitivity is 107mV/mm positive and negative 10%.
In order to realize described parameter, researcher of the present invention proposes, coil in displacement transducer, should satisfy following index: its effective resistance is 68 ohm positive and negative 3%, its inductance L is 2.55mH positive and negative 3% under 15kHz, under 15kHz and damper length when being 220mm its inductance L be that 2.13mH is positive and negative 3%, its electric capacity is 1.85nF positive and negative 10%. under 15kHz
In order to further specify the also damping performance of the described damper of standard, the researcher has also proposed, and the damper thrust FD (i.e. (FD+FZ)/2) that is suitable for is 80-120N, and its tensile force f Z (i.e. (FZ-FD)) is smaller or equal to 25N.
The invention provides and a kind of displacement transducer and air damping damper are united two into one, and with another special-purpose supporting use of air damping damper, the signal that records by displacement transducer is converted into weight signal, weight amount and inflow that can the observing and controlling washing clothes, simple in structure, production cost is low, the weighing device that certainty of measurement is higher, and it especially can be widely used in the roller washing machine.
Claims (9)
1. roller washing machine that is provided with weighing device, it comprises casing, be installed in the mechanical supporting device between casing and the urceolus, be installed in the interior cylinder in the urceolus, be installed in motor and transmission device thereof between casing and the urceolus, be installed in and advance drainage mechanism and electric control system on the casing, mechanical supporting device comprises two resiliency supported shock absorbers between the base that is installed in outer tube bottom and casing, it is characterized in that, described resiliency supported shock absorber is the air damping shock absorber, one of them air damping shock absorber has displacement transducer, the I/O of displacement transducer is connected with Weighing module, Weighing module is connected with the microprocessor of electric control system, described Weighing module comprises the rectification circuit that is connected with the output of displacement transducer, the low pass filter that is connected with rectification circuit, the high-gain amplifier that is connected with low pass filter, the timing sequence generating circuit that is connected with high-gain amplifier with low pass filter, the square wave generation circuit that is connected with timing sequence generating circuit, with timing sequence generating circuit microprocessor linked interface circuit, square wave generation circuit is connected with two inputs of displacement transducer, and the MPI circuit is connected with microprocessor with high-gain amplifier.
2. a kind of roller washing machine that is provided with weighing device according to claim 1 is characterized in that: the damping force of all air damping shock absorbers that are provided with on the washing machine is identical or close.
3. a kind of roller washing machine that is provided with weighing device according to claim 1 is characterized in that: described Weighing module internally produces the control signal of high accurate clock signal, various clock signal, wave filter/amplifier; Externally then produce to measure and use the biphasic square wave signal, and be connected to the interface circuit of microprocessor (MCU).
4. a kind of roller washing machine that is provided with weighing device according to claim 1, the described air damping shock absorber that has displacement transducer is had the cylinder block of connecting ring by the end, be fixed on the bobbin on the cylinder block axial line, be installed in the coil of bobbin peripheral part, be produced on the coil interface that the cylinder block outside is connected with coil, be sleeved in the cylinder block and the end has the piston rod of connecting ring, the piston packing ring that is sleeved on the piston rod other end is formed, described piston rod is made by ferromagnetic material, and the piston rod end has the endoporus that can make bobbin and coil turnover.
5. a kind of roller washing machine that is provided with weighing device according to claim 4, the described air damping shock absorber of displacement transducer that has is when lower compression, produce displacement between coil and the ferromagnetic material piston rod, the inductance value of coil changes, and it is detected and transfer to Weighing module that displacement just is converted to inductance value.
6. a kind of roller washing machine that is provided with weighing device according to claim 1, it is characterized in that: described displacement transducer has following index: its simulation output is smaller or equal to positive and negative 3.5V; When measurement category in positive and negative 25.5mm, its linearity is positive and negative 1.5%, its sensitivity is 107mV/mm positive and negative 10%.
7. according to claim 4 or 5 described a kind of roller washing machines that are provided with weighing device, it is characterized in that: the piston rod of this air damping shock absorber is provided with axis sheet ribs and along the sheet ribs of piston rod axis vertical direction, described axis sheet ribs is the 3-9 sheet, and described sheet ribs along piston rod axis vertical direction is the 2-7 sheet.
8. a kind of roller washing machine that is provided with weighing device according to claim 7 is characterized in that: described axis sheet ribs is 7, and described sheet ribs along piston rod axis vertical direction is 5.
9. adopt the described a kind of method for measuring weight that is provided with the roller washing machine of weighing device of claim 1, it is characterized in that: the described air damping shock absorber that has displacement transducer is had the cylinder block of connecting ring by the end, be fixed on the bobbin on the cylinder block axial line, be installed in the coil of bobbin peripheral part, be produced on the coil interface that the cylinder block outside is connected with coil, be sleeved in the cylinder block and the end has the piston rod of connecting ring, the piston packing ring that is sleeved on the piston rod other end is formed, described piston rod is made by ferromagnetic material, the piston rod end has the endoporus that can make bobbin and coil turnover, having the bobbin of air damping shock absorber of displacement transducer and the coil that is installed on the bobbin inserts in the endoporus of piston rod, when adding clothing or water inlet, the weight of urceolus and interior cylinder increases, be added in air damping shock absorber that tilts to install and the gravity increasing on the air damping shock absorber that has displacement transducer, force this air damping shock absorber that has displacement transducer to lower compression, described cylinder block and the piston rod that has the air damping shock absorber of displacement transducer, air between the piston packing ring is compressed, damping force increases, until balance, the air damping shock absorber that has displacement transducer is when lower compression, produced displacement between coil and the ferromagnetic material piston rod, the inductance value of coil must change, it is detected and transfer to Weighing module that displacement just is converted to inductance value, described Weighing module at first carries out rectification to the AC signal that displacement transducer feeds back, this AC signal is a square-wave signal, and square-wave signal is transformed into direct current signal; Then direct current signal is made LPF, the filtering High-frequency Interference; Carry out high-gain at last and amplify, obtain the output signal of suitable amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410062531 CN1690291B (en) | 2004-04-22 | 2004-07-01 | Washing machine weighing method and washing machine for realizing the method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420040155.X | 2004-04-22 | ||
| CN200420040155 | 2004-04-22 | ||
| CN 200410062531 CN1690291B (en) | 2004-04-22 | 2004-07-01 | Washing machine weighing method and washing machine for realizing the method |
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| Publication Number | Publication Date |
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| CN1690291A CN1690291A (en) | 2005-11-02 |
| CN1690291B true CN1690291B (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410062531 Expired - Fee Related CN1690291B (en) | 2004-04-22 | 2004-07-01 | Washing machine weighing method and washing machine for realizing the method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006027295B3 (en) * | 2006-06-13 | 2007-07-12 | Suspa Holding Gmbh | Weight of the washing load in a horizontal axis front loading domestic washing machine is established by determining the depression characteristics between the unloaded and loading conditions in the suspension springs and dampers |
| CN101813543B (en) * | 2009-02-20 | 2014-04-09 | 海尔集团公司 | Method for detecting unbalance of displacement sensor for cylinder washing machine |
| KR20110102681A (en) * | 2010-03-11 | 2011-09-19 | 삼성전자주식회사 | Washing machine and its control method |
| EP2659050B1 (en) * | 2010-12-27 | 2015-10-14 | Arçelik Anonim Sirketi | Washing machine comprising a load sensor |
| CN104790179B (en) * | 2014-01-21 | 2018-11-13 | 青岛海尔洗衣机有限公司 | Washing machine and its carry out shock detection, load weigh, the method for cloth quality detection |
| CN106702673A (en) * | 2015-07-31 | 2017-05-24 | 青岛海尔洗衣机有限公司 | Vibration reduction part of washing machine |
| CN106480654B (en) * | 2015-09-02 | 2020-06-26 | 青岛海尔洗衣机有限公司 | Outer barrel of washing machine and washing machine |
| CN115538090A (en) * | 2022-11-03 | 2022-12-30 | 西北工业大学 | Method for weighing clothes in washing machine |
| CN115538096A (en) * | 2022-11-03 | 2022-12-30 | 西北工业大学 | A washing machine unbalance detection method |
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2004
- 2004-07-01 CN CN 200410062531 patent/CN1690291B/en not_active Expired - Fee Related
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