CN105420995A - Cover opening and closing detecting method for clothes treating equipment and clothes treating equipment - Google Patents
Cover opening and closing detecting method for clothes treating equipment and clothes treating equipment Download PDFInfo
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- CN105420995A CN105420995A CN201410401236.6A CN201410401236A CN105420995A CN 105420995 A CN105420995 A CN 105420995A CN 201410401236 A CN201410401236 A CN 201410401236A CN 105420995 A CN105420995 A CN 105420995A
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- cover
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- treatment device
- touch sensible
- clothes treatment
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Abstract
The invention discloses a cover opening and closing detecting method for clothes treating equipment and the clothes treating equipment and belongs to the technical field of household appliances. The problems of a complicated structure and high cost as prior reed switches, magnetic sensors or mechanical keys are used by prior clothes treating equipment for detecting the cover opening and closing state are solved. According to the cover opening and closing detecting method, the clothes treating equipment is provided with a body, an opening portion and a cover. The opening portion is formed on the body for taking and putting of clothes, and the cover is used for covering or uncovering the opening portion. A front control board is arranged on the upper portion of the body of the clothes treating equipment, a control P board is arranged in the front control board, a touch induction key connected with the control P board is arranged on one side, close to the cover, of the front control board, and a capacitor inductor is arranged on one side, close to the front control board, of the cover. Opening and closing of the cover cause capacitance values on the touch induction key to be changed, and the clothes treating equipment judges the opening and closing state of the cover according to the changes of the capacitance on the touch induction key.
Description
[technical field]
The present invention relates to cover opening and closing inspection method and the clothes treatment device thereof of clothes treatment device, belong to household electrical appliance technical field.
[background technology]
Automatic washing machine of the prior art, general tongue tube or chinaware sensor and magnet coordinate the cover detecting washing machine to be in open or closed state, during practical application, tongue tube or chinaware sensor are assemblied on the display P plate of washing machine, magnet is arranged on washing machine and covers.When cover closes, magnet on cover is near the display P plate of washing machine, tongue tube or chinaware sensor are close due to magnet, tongue tube or chinaware sensor signal are after associated loop conversion, low level signal will be sent, washing machine judges that washing machine hood closes after detecting this low level signal by MCU.When apparatus lid opening, the magnet on cover away from the display P plate of washing machine, tongue tube or chinaware sensor due to magnet away from, stopping is sent low level signal, and washing machine detects rear by MCU, judges that washing machine hood is opened.
The washing machine of prior art detects cover opening and closing state by tongue tube, chinaware sensor or mechanical key, there is complex structure, high in cost of production problem.Along with the extensive use of capacitance touch induction technology, if detect the open and-shut mode of washing machine hood by capacitance touch induction technology, will be conducive to cost-saving and simplify the operation.
[summary of the invention]
Problem to be solved by this invention is just to provide the cover opening and closing inspection method of the clothes treatment device of low cost.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The cover opening and closing inspection method of clothes treatment device, described clothes treatment device has body, be formed on body for picking and placeing the opening portion of clothing and the cover for closing or open described opening portion, the body upper of clothes treatment device is provided with front control board, control P plate is provided with in described front control board, described front control board is provided with the touch sensible button be connected with control P plate near cover side, described cover is provided with capacitive sensing body near front control board side, the open and close of described cover causes the change of capacitance on described touch sensible button, described clothes treatment device judges the open and-shut mode of cover according to the change of capacitance on touch sensible button.
Further, the capacitive sensing body on described cover is metallic conductor, because capacitive sensing effect produces the change of capacitance between described metallic conductor and touch sensible button.
Further, described front control board arranges at least two touch sensible buttons near compartment of terrain, cover side,
When described at least two touch sensible buttons are triggered simultaneously, clothes treatment device judges that cover is closure state;
When described at least two touch sensible buttons are not all triggered, clothes treatment device judges that cover is open mode;
When part in described at least two touch sensible buttons is triggered, clothes treatment device is judged as false triggering, carries out alarm simultaneously.
Further, described control P plate has main IC and touches IC, and described touch sensible button is connected with touch IC, and described touch IC reads capacitance variation and feeds back signal to main IC, and described main IC judges the open and-shut mode of cover according to the signal touching IC.
Further, described main IC and touch IC is separately independent is arranged; Or described main IC and touch IC becomes one.
Further, the built-in touch measure loop of described touch IC, by touching charging interval T0 and T1 of electric capacity before and after touch sensible button is triggered formed in its peripheral circuit of measure loop record, described touch measure loop preset setting values △ T, if the difference △ T1 >=setting value △ T of T1 and T0, then judge that touch sensible button is effectively triggered, if the difference △ T1 < setting value △ T of T1 and T0, then judges that touch sensible button is as invalid triggering.
Further, described touch sensible button is induction spring, PCB induction electrode, FPCB induction electrode, one or both and two or more combinations in conducting foam.
The present invention also proposes a kind of clothes treatment device, applies the cover opening and closing inspection method of the clothes treatment device described in above-mentioned arbitrary technical scheme.
Beneficial effect of the present invention:
The cover opening and closing inspection method of clothes treatment device of the present invention adopts capacitance touch induction technology, the front control board of clothes treatment device arranges the touch sensible button be connected with display P plate, cover arranges capacitive sensing body, the open and close of cover causes the change of capacitive sensing body and touch sensible press button gap, capacitance on touch sensible button is also corresponding to change, and clothes treatment device judges the open and-shut mode of cover according to the change of capacitance on touch sensible button.Rely on tongue tube, chinaware sensor or mechanical key to detect the mode of cover opening and closing compared to existing technology, technical scheme of the present invention, greatly reduces implementation cost, and effectively can ensure the accuracy that detects.
These features of the present invention and advantage will detailed description of the invention below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is touch sensible button and the scheme of installation of capacitive sensing body on washing machine in the embodiment of the present invention;
Fig. 2 is the circuit theory diagrams in the embodiment of the present invention, control P plate is connected with touch sensible button;
Fig. 3 is capacitance profile schematic diagram in the circuit in the embodiment of the present invention, control P plate is connected with touch sensible button;
Fig. 4 touches IC internal circuit schematic diagram in the embodiment of the present invention;
Fig. 5 is cover opening and closing overhaul flow chart in the embodiment of the present invention.
[detailed description of the invention]
The technical scheme of accompanying drawing to the embodiment of the present invention below in conjunction with the embodiment of the present invention is explained and illustrated, but following embodiment is only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection scope of the present invention.
Illustrating for ease of explaining, in the embodiment of the present invention, for washing machine of the prior art, setting forth the practical application of cover opening and closing inspection method of the present invention.
With reference to Fig. 1, the washing machine of the preferred embodiment of the present invention, there is body (not shown) and cover 1, body upper arranges front control board 2 and the opening portion 3 for picking and placeing clothing, cover 1 is for closing or opening described opening portion 3, be provided with control P plate 20 in front control board 2 inside, washing machine carries out the procedure operation of being correlated with by the function button in pressing front control board 2.
The present embodiment is provided with touch sensible button 21 near cover 1 side in front control board 2, cover 1 arranges capacitive sensing body 11 near front control board 2 side, the capacitive sensing body 11 on cover 1 and between the touch sensible button 21 in front control board because capacitive sensing effect produces the change of capacitance.Concrete: when cover 1 closes, capacitive sensing body 11 is closest with touch sensible button 21, and inductance capacitance is maximum, makes touch sensible button 21 be detected triggering, after washing machine detects this touch key-press signal, judges that washing machine hood 1 closes; When cover 1 is opened, capacitive sensing body 11 is away from touch sensible button 21, and inductance capacitance disappears, and touch sensible button 21 is not detected triggering, after washing machine can not detect this touch key-press signal, judges that washing machine hood 1 is opened.
With reference to Fig. 2-4, during concrete enforcement, control P plate 20 be provided with main IC23 and touch IC24, touch sensible button 21 is connected with touch IC24, touch IC24 read capacitance variation and feed back signal to main IC23, main IC23 judges the open and-shut mode of cover 1 according to the signal touching IC24.Main IC23 and the touch IC24 of the present embodiment are separately independently arranged, and namely main IC23 and touch IC24 is the chip of two pieces of difference in functionalitys, but in other embodiments, main IC23 and touch IC24 also can become one, and namely forms the main IC with touch function.
In fact, across front control board 2 (as insulating medium layer) between capacitive sensing body 11 and touch sensible button 21, but this does not impact detection.CX is that touch sensible button 21 is to the capacitance touching IC24 port, CX comprises external touch inductance capacitance CF and loop parasitic capacitance CP, wherein loop parasitic capacitance CP is intrinsic existence, this parasitic capacitance CP is the reduced form of distribution capacity, that includes touch sensible button 21 cushion block effect, dielectric effect layer, touch cabling between IC24 pin and touch sensible button 21 effect, through circuit board via effect and touch the effect of IC24 pin capacitance.
Above-mentioned external touch inductance capacitance CF is when capacitive sensing body 11 is near insulating medium layer, the induction capacity plate antenna produced is combined with the touch sensible button 21 below insulating medium layer, the capacitance of this capacity plate antenna is by following formulae discovery: CF=ε 0* ε r*A/D, wherein ε 0 is free space dielectric constant, ε r is the dielectric constant (relative dielectric constant) of insulating medium layer, A is the overlapping area of capacitive sensing body 11 and touch sensible button 21, and D is dielectric layer thickness.
Although capacitive sensing body 11 is just fixed up after assembling with the overlapping area A of touch sensible button 21, but along with the increase of dielectric layer thickness, capacitive sensing body 11 is more difficult touches touch sensible button 21, namely capacitive sensing body 11 contacts dielectric thickness D and becomes large with touch sensible button 21, that is, CF is less.More difficult like this change capacitance on touch sensible button 21 being detected, as long as but front control board THICKNESS CONTROL detect allow scope in, be all fine realize.
The touch sensible button 21 of the present embodiment have employed induction spring, the metallic conductor that capacitive sensing body 11 adopts the material such as iron, aluminium to make, a pin 211 of induction spring with touch IC24 and be connected, another pin 212 fixes pin.Induction spring itself has the characteristic of free-extension, close contact front control board 2 after installing, and easily adjusts installation site.Certainly, adopt one or both and the two or more combinations in PCB induction electrode of the prior art, FPCB induction electrode, conducting foam, also can realize the function be equal to.
Cleaning Principle according to capacitance touch induction technology: when capacitive sensing body 11 is away from touch sensible button 21, CF=0, so CX=CP; When capacitive sensing body 11 is near to or in contact with touch sensible button 21, CX=CF+CP; Clearly, touch sensible button 21 before activation after capacitance create change, and the present embodiment is by detecting this capacitance variation, just can judge whether there is capacitive sensing body 11 near to or in contact with touch sensible button 21, thus infer the open and-shut mode of the washing machine hood 1 being provided with capacitive sensing body 11 further.
If the capacitance comprised in circuit is different, also be different to the charging interval of electric capacity in this circuit, thus, can by calculating the method for capacitor charging time, carry out the change of Detection capacitance value, concrete operation method is as follows: Figure 4 shows that in the present embodiment and touch IC24 internal circuit schematic diagram, the built-in touch measure loop 241 of touch IC24 of the present embodiment, constant-current source is provided with in this touch measure loop, current-limiting resistance R2, discharge resistance R1, inner MCU and internal timer, the electric capacity formed in the peripheral circuit of this touch measure loop includes touch sensible button 21 to the electric capacity CX (comprising external touch inductance capacitance CF and loop parasitic capacitance CP) and the charge and discharge capacitance C1 that touch IC24 port.
When capacitive sensing body 11 is away from touch sensible button 21, when touch sensible button 21 is not triggered, CX=CP; Touch measure loop to be charged to charge and discharge capacitance C1 and electric capacity CX by disconnection SW1, closed SW2, carry out internal timer timing simultaneously, when the voltage value on charge and discharge capacitance C1 and electric capacity CX reaches a reference value VREF, disconnect SW2 and closed SW1, read the time of timer, record charging interval T0 simultaneously.Subsequently, closed SW1, the electric charge of charge and discharge capacitance C1 and electric capacity CX is discharged by discharge resistance R1, and when inner MCU confirms that the voltage of charge and discharge capacitance C1 and electric capacity CX is 0, electric discharge terminates.
When capacitive sensing body 11 is close or contact touch sensible button 21, when touch sensible button 21 is triggered, CX=CP+CF; Before comparing touch sensible button 21 triggering, at this moment CX increases, touch measure loop to be charged to charge and discharge capacitance C1 and electric capacity CX by disconnection SW1, closed SW2, carry out internal timer timing simultaneously, when the voltage value on charge and discharge capacitance C1 and electric capacity CX reaches a reference value VREF, disconnect SW2 and closed SW1, read the time of timer simultaneously, record charging interval T1.Subsequently, closed SW1, the electric charge of charge and discharge capacitance C1 and electric capacity CX is discharged by discharge resistance R1, and when inner MCU confirms that the voltage of charge and discharge capacitance C1 and electric capacity CX is 0, electric discharge terminates.
Due to touch sensible button 21 be triggered time, CX increases, the corresponding charging interval also increases, so T1 > T0, touch IC24 inside and setting value △ T is set, if the difference △ T1 >=setting value △ T of T1 and T0, then judge that touch sensible button 21 is effectively triggered, if the difference △ T1 < setting value △ T of T1 and T0, then judge that touch sensible button 21 is as invalid triggering.Because the value of △ T1 is relevant to CX, and the size of CX and CF is correlated with, CF is larger, and the value of CX is larger, charging interval, T1 was longer, the value of △ T1 is larger, otherwise less, so, by adjusting this setting value △ T, just can adjust the trigger sensitivity of touch sensible button 21, namely the setting of △ T value is less, and touch sensible button 21 is more easily triggered.
In the process of practical operation washing machine, user's finger, metal object on clothing or water droplet close to or contact touch sensible button 21 time, can triggers touch induced key 21, easily cause the flase drop of system to know.For this reason, the present embodiment arranges two touch sensible buttons 21 in the front control board of washing machine, and these two touch sensible buttons 21 spaced a predetermined distance.Cover 1 is provided with two metallic conductors, and these two metallic conductors are corresponding with the position of two touch sensible buttons 21 respectively.
With reference to Fig. 1,5, utilize aforesaid capacitance variation detection mode, when having two touch sensible buttons 21, the present embodiment judges the open and-shut mode of cover 1 by the following method:
1, when two touch sensible buttons 21 are simultaneously by lasting triggering, washing machine judges that cover 1 is as closure state;
2, when two touch sensible buttons 21 are not all by lasting triggering, washing machine judges that cover 1 is as open mode;
3, when only having one in two touch sensible buttons 21, by lasting triggering, washing machine is judged as false triggering, carries out alarm simultaneously.
When the finger of user directly touches one of them touch sensible button 21 in front control board, this touch sensible button 21 is triggered, but owing to only having a touch sensible button 21 to be triggered, the flase drop that washing machine there will not be judgement cover 1 to close know phenomenon.
Under minimum probability, user makes with the hands to touch this two touch sensible buttons 21 respectively, just there will be washing machine and judge that the flase drop that cover 1 has closed knows phenomenon, but now user's both hands triggers touch induced key 21, there will not be hand to stretch into the situation of inner tank of washing machine.
In actual use procedure, when human body is near washing machine, distance touch sensible button 21 is comparatively far away, cannot triggers touch induced key 21, therefore can not produce the phenomenon that flase drop is known.
In the embodiment of the present invention, by cover being arranged metallic conductor triggers touch induced key 21 just a kind of preferred embodiment, in other embodiments, near to or in contact with in situation, the conductor of touch sensible button 21 capacitance variation can be caused to realize, and conductor is not confined to solid-state metal object, it also can be liquid form.The embodiment of the present invention, by arranging metallic conductor on cover, coordinates the touch sensible button that front control board is arranged, and detects the open and-shut mode of washing machine hood, has saved cost, reduced operation complexity.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can be stored in memory and to be performed by suitable instruction, such as, realize with hardware, can realize by any one in following technology well known in the art or their combination: there is the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA) etc.
The embodiment of the present invention can be applicable to the device for clothing processing such as rotary drum washing machine, roller washing machine, drier.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and is familiar with this those skilled in the art and should be understood that and the present invention includes but the content being not limited to accompanying drawing and describing in detailed description of the invention above.Any amendment not departing from function and structure principle of the present invention all will comprise within the scope of the appended claims.
Claims (8)
1. the cover opening and closing inspection method of clothes treatment device, it is characterized in that: described clothes treatment device has body, be formed on body for picking and placeing the opening portion of clothing and the cover for closing or open described opening portion, the body upper of clothes treatment device is provided with front control board, control P plate is provided with in described front control board, described front control board is provided with the touch sensible button be connected with control P plate near cover side, described cover is provided with capacitive sensing body near front control board side, the open and close of described cover causes the change of capacitance on described touch sensible button, described clothes treatment device judges the open and-shut mode of cover according to the change of capacitance on touch sensible button.
2. the cover opening and closing inspection method of clothes treatment device as claimed in claim 1, is characterized in that: the capacitive sensing body on described cover is metallic conductor, because capacitive sensing effect produces the change of capacitance between described metallic conductor and touch sensible button.
3. the cover opening and closing inspection method of clothes treatment device as claimed in claim 1, is characterized in that: described front control board arranges at least two touch sensible buttons near compartment of terrain, cover side,
When described at least two touch sensible buttons are triggered simultaneously, clothes treatment device judges that cover is closure state;
When described at least two touch sensible buttons are not all triggered, clothes treatment device judges that cover is open mode;
When part in described at least two touch sensible buttons is triggered, clothes treatment device is judged as false triggering, carries out alarm simultaneously.
4. the cover opening and closing inspection method of the clothes treatment device as described in claim 1 or 2 or 3, it is characterized in that: described control P plate has main IC and touches IC, described touch sensible button is connected with touch IC, described touch IC reads capacitance variation and feeds back signal to main IC, and described main IC judges the open and-shut mode of cover according to the signal touching IC.
5. the cover opening and closing inspection method of clothes treatment device as claimed in claim 4, is characterized in that: described main IC and touch IC is separately independent to be arranged; Or described main IC and touch IC becomes one.
6. the cover opening and closing inspection method of clothes treatment device as claimed in claim 4, it is characterized in that: the built-in touch measure loop of described touch IC, by touching charging interval T0 and T1 of electric capacity before and after touch sensible button is triggered formed in its peripheral circuit of measure loop record, described touch measure loop preset setting values △ T, if the difference △ T1 >=setting value △ T of T1 and T0, then judge that touch sensible button is effectively triggered, if the difference △ T1 < setting value △ T of T1 and T0, then judge that touch sensible button is as invalid triggering.
7. the cover opening and closing inspection method of the clothes treatment device as described in claim 1 or 2 or 3, is characterized in that: described touch sensible button is induction spring, PCB induction electrode, FPCB induction electrode, one or both and two or more combinations in conducting foam.
8. clothes treatment device, is characterized in that: application rights requires the cover opening and closing inspection method of the clothes treatment device described in 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401236.6A CN105420995A (en) | 2014-08-14 | 2014-08-14 | Cover opening and closing detecting method for clothes treating equipment and clothes treating equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401236.6A CN105420995A (en) | 2014-08-14 | 2014-08-14 | Cover opening and closing detecting method for clothes treating equipment and clothes treating equipment |
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| CN105420995A true CN105420995A (en) | 2016-03-23 |
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| CN201410401236.6A Pending CN105420995A (en) | 2014-08-14 | 2014-08-14 | Cover opening and closing detecting method for clothes treating equipment and clothes treating equipment |
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Cited By (7)
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| WO2018040204A1 (en) * | 2016-08-31 | 2018-03-08 | 无锡小天鹅股份有限公司 | Laundry treating device |
| CN108926207A (en) * | 2017-05-23 | 2018-12-04 | 芜湖美的厨卫电器制造有限公司 | The detection device and method of cup and its state |
| CN109706694A (en) * | 2017-10-25 | 2019-05-03 | 青岛海尔洗衣机有限公司 | Top-opening type clothes treatment device and its inside drum cover detection components |
| CN110117890A (en) * | 2018-02-05 | 2019-08-13 | 松下家电研究开发（杭州）有限公司 | A kind of liquid level detection device, liquid-level detecting method and washing machine |
| CN110241564A (en) * | 2018-03-08 | 2019-09-17 | 青岛海尔洗衣机有限公司 | The fastening detection system and method for the inside drum cover of top-opening type clothes treatment device |
| CN111865289A (en) * | 2020-06-18 | 2020-10-30 | 深圳市周立功单片机有限公司 | Touch key detection device and method |
| WO2023103747A1 (en) * | 2021-12-10 | 2023-06-15 | 青岛海尔洗涤电器有限公司 | Upper cover device for clothes treatment apparatus, and clothes treatment apparatus |
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| WO2018040204A1 (en) * | 2016-08-31 | 2018-03-08 | 无锡小天鹅股份有限公司 | Laundry treating device |
| CN108926207A (en) * | 2017-05-23 | 2018-12-04 | 芜湖美的厨卫电器制造有限公司 | The detection device and method of cup and its state |
| CN109706694A (en) * | 2017-10-25 | 2019-05-03 | 青岛海尔洗衣机有限公司 | Top-opening type clothes treatment device and its inside drum cover detection components |
| CN109706694B (en) * | 2017-10-25 | 2021-08-24 | 青岛胶南海尔洗衣机有限公司 | Top-opening clothes treatment equipment and inner cylinder cover detection assembly thereof |
| CN110117890A (en) * | 2018-02-05 | 2019-08-13 | 松下家电研究开发（杭州）有限公司 | A kind of liquid level detection device, liquid-level detecting method and washing machine |
| CN110241564A (en) * | 2018-03-08 | 2019-09-17 | 青岛海尔洗衣机有限公司 | The fastening detection system and method for the inside drum cover of top-opening type clothes treatment device |
| CN110241564B (en) * | 2018-03-08 | 2021-08-27 | 青岛胶南海尔洗衣机有限公司 | Buckling detection system and method for inner cylinder cover of top-opening type clothes treatment equipment |
| CN111865289A (en) * | 2020-06-18 | 2020-10-30 | 深圳市周立功单片机有限公司 | Touch key detection device and method |
| CN111865289B (en) * | 2020-06-18 | 2024-03-26 | 深圳市周立功单片机有限公司 | Touch key detection equipment and method |
| WO2023103747A1 (en) * | 2021-12-10 | 2023-06-15 | 青岛海尔洗涤电器有限公司 | Upper cover device for clothes treatment apparatus, and clothes treatment apparatus |
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Application publication date: 20160323 |
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