CN106033964A - Button trigger detection apparatus in household appliance and the household appliance possessing the button trigger detection apparatus - Google Patents
Button trigger detection apparatus in household appliance and the household appliance possessing the button trigger detection apparatus Download PDFInfo
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- CN106033964A CN106033964A CN201510115125.3A CN201510115125A CN106033964A CN 106033964 A CN106033964 A CN 106033964A CN 201510115125 A CN201510115125 A CN 201510115125A CN 106033964 A CN106033964 A CN 106033964A
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Abstract
The invention discloses a button trigger detection apparatus in a household appliance and the household appliance possessing the button trigger detection apparatus. The button trigger detection apparatus in the household appliance comprises a voltage acquisition module, a comparison module, a maintenance module, an interruption generation module and a control chip, wherein the voltage acquisition module is connected to a button and is used for collecting a voltage of the button; the comparison module is connected to the voltage acquisition module and is used for comparing the collected voltage to a preset voltage so as to generate a trigger signal; the maintenance module is connected to the comparison module and maintains the trigger signal output by the comparison module; the interruption generation module is used for generating an interruption signal according to the trigger signal; and the control chip is connected to the maintenance module and the interruption generation module respectively and the control chip reads the trigger signal maintained by the maintenance module according to the interruption signal. In the invention, when the button is triggered, interruption is generated to the control chip so as to detect an optimum motion point of the button; occupation to control chip resources can be greatly reduced and the trigger signal can maintain for a certain time so as to realize time-delay jitter elimination.
Description
Technical field
The present invention relates to household electrical appliance technical field, particularly to button detection trigger device in a kind of household electrical appliance and a kind of family
Electrical appliance.
Background technology
The piezoelectric patches button that occurs on the market at present, foil gauge button, coil panel impedance button, coil panel induction reactance button etc.,
The method used is all uninterruptedly to read the ADC of button (analog digital conversion) value, has the most both caused MCU (Micro Control
Unit, micro-control unit/chip) waste of resource, it is likely to miss the optimal operating point of button simultaneously.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention
Purpose is that proposing a kind of can greatly reducing takies MCU resource, more can accurately detect the family of the optimal operating point of button
Button detection trigger device in electrical appliance.
Further object is that a kind of household electrical appliance of proposition.
To achieve these goals, button detection trigger device in household electrical appliance according to embodiments of the present invention, including: voltage
Acquisition module, described voltage acquisition module is connected with button, for gathering the voltage of described button；Comparison module, described ratio
Relatively module is connected with described voltage acquisition module, triggers signal for the voltage of collection and predeterminated voltage being compared to generate；
Maintaining module, described maintenance module is connected with described comparison module, and described maintenance module maintains touching of described comparison module output
Signal；Interrupt generation module, for producing interrupt signal according to described triggering signal；And control chip, described control
Chip is connected with described maintenance module and described interruption generation module respectively, and described control chip reads according to described interrupt signal
The triggering signal that described maintenance module maintains.
Button detection trigger device in household electrical appliance according to embodiments of the present invention, gathers the electricity of button by voltage acquisition module
Press, and then the voltage of collection and predeterminated voltage are compared and trigger signal to generate by comparison module, and by maintaining module dimension
Hold the triggering signal of comparison module output, and after interruption generation module is according to triggering signal generation interrupt signal, control core
Sheet reads the triggering signal maintaining module to maintain according to interrupt signal.In these household electrical appliance, button detection trigger device is only at button
When being triggered, produce and interrupt to control chip to realize the detection optimal operating point of button, be possible not only to greatly reduce controlling core
Taking of sheet resource, more can allow triggering signal maintain the regular hour, it is achieved time delay disappears and trembles.
Specifically, in one embodiment of the invention, described voltage acquisition module includes: the first resistance, described first electricity
First end of resistance is connected with described button；And second resistance, the of the first end of described second resistance and described first resistance
Two ends are connected, and the second end ground connection of described second resistance, the first end of described second resistance is as described voltage acquisition module
Outfan.
Specifically, in one embodiment of the invention, described comparison module includes: comparator, the homophase of described comparator
Input is connected with the outfan of described voltage acquisition module, the inverting input of described comparator and the offer end of predeterminated voltage
Being connected, the outfan of described comparator is as the outfan of described comparison module；And the 3rd resistance, described 3rd resistance
First end is connected with the in-phase input end of described comparator, the second end of described 3rd resistance and the outfan phase of described comparator
Even.
Specifically, in one embodiment of the invention, described maintenance module includes: the first electric capacity, described first electric capacity
First end first input end with the outfan of described comparison module and described control chip respectively is connected, described first electric capacity
Second end ground connection.
Specifically, in one embodiment of the invention, described interruption generation module includes: the second electric capacity, described second electricity
The first end held is connected with the outfan of described comparison module, the second end of described second electric capacity and the second of described control chip
Input is connected.
Further, in one embodiment of the invention, in described household electrical appliance, button detection trigger device also includes: make an uproar
Sound cancellation module, described noise cancellation module respectively with described voltage acquisition module, the offer end of predeterminated voltage and described compare
Module is connected, and described noise cancellation module is for eliminating the noise between the voltage of described collection and described predeterminated voltage.
Specifically, in one embodiment of the invention, described noise cancellation module includes: the 3rd electric capacity, described 3rd electricity
The first end held in-phase input end with the outfan of described voltage acquisition module and described comparator respectively is connected, and the described 3rd
Second end of electric capacity is connected with the inverting input providing end and described comparator of described predeterminated voltage respectively.
Further, in one embodiment of the invention, in described household electrical appliance, button detection trigger device also includes: pre-
If voltage provides module, described predeterminated voltage provides module to be connected with described comparison module, is used for generating described predeterminated voltage.
Specifically, in one embodiment of the invention, described predeterminated voltage provides module to include: the 4th resistance, and described the
First end of four resistance is connected with power supply；And Zener diode, the negative electrode of described Zener diode and described 4th resistance
Second end is connected, and the plus earth of described Zener diode, the negative electrode of described Zener diode is as the offer end of predeterminated voltage.
To achieve these goals, household electrical appliance according to embodiments of the present invention, including in button and described household electrical appliance by
Key detection trigger device.
Household electrical appliance according to embodiments of the present invention, by button detection trigger device in household electrical appliance when button is triggered,
Produce and interrupt to control chip to realize the detection optimal operating point of button, be possible not only to greatly reduce control chip resource is accounted for
With, triggering signal more can be allowed to maintain the regular hour, it is achieved time delay disappears and trembles.
Accompanying drawing explanation
Fig. 1 is the block diagram of button detection trigger device in household electrical appliance according to embodiments of the present invention；And
Fig. 2 is the structural representation of button detection trigger device in household electrical appliance according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings button detection trigger device and household electrical appliance in the household electrical appliance of the embodiment of the present invention are described.
As it is shown in figure 1, button detection trigger device 1 includes in household electrical appliance according to embodiments of the present invention: voltage acquisition mould
Block 11, comparison module 12, maintenance module 13, interruption generation module 14 and control chip 15.Wherein, voltage acquisition mould
Block 11 is connected with button 2, for gathering the voltage (such as voltage V+) of button 2.Comparison module 12 and voltage acquisition mould
Block 11 is connected, and triggers signal for the voltage of collection and predeterminated voltage being compared to generate.Maintain module 13 and compare
Module 12 is connected, and maintains the triggering signal that module 13 maintains comparison module 12 to export.Interrupt generation module 14 for basis
Trigger signal and produce interrupt signal.Control chip 15 is connected with maintaining module 13 and interruption generation module 14 respectively, controls core
Sheet 15 reads the triggering signal maintaining module 13 to maintain according to interrupt signal.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, voltage acquisition module 11 can include the first resistance
R1 and the second resistance R2.Wherein, first end of the first resistance R1 is connected with button 2.First end of the second resistance R2 with
Second end of the first resistance R1 is connected, and the second end ground connection of the second resistance R2, first end of the second resistance R2 is adopted as voltage
The outfan of collection module 11.First resistance R1 and the second resistance R2 carries out dividing potential drop to the voltage gathered.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, comparison module 12 can include comparator 121 with
And the 3rd resistance R3.Wherein, the in-phase input end of comparator 121 is connected with the outfan of voltage acquisition module 11, compares
The inverting input of device 121 is connected with the offer end of predeterminated voltage, and the outfan of comparator 121 is defeated as comparison module 12
Go out end.First end of the 3rd resistance R3 is connected with the in-phase input end of comparator 121, second end of the 3rd resistance R3 with than
The outfan of relatively device 121 is connected, and the 3rd resistance R3 is as the positive feedback resistor of comparator 121, the resistance of the 3rd resistance R3
Size can module 13 is actual maintains the time triggering signal to choose according to maintaining.Further, in a reality of the present invention
Executing in example, when the voltage that voltage acquisition module 11 gathers is more than predeterminated voltage, the output level of comparator 121 is by low level
Upset is high level, and this high level is as triggering signal.It should be noted that in one embodiment of the invention, permissible
Change the first resistance R1, the resistance of the second resistance R2 in voltage acquisition module 11 according to practical situation, or cancel the first electricity
Resistance R1, the second resistance R2, wherein, when cancelling the first resistance R1 and the second resistance R2, button 2 and comparator 121
In-phase input end is joined directly together.It addition, regulation the first resistance R1, the second resistance R2, the resistance of the 3rd resistance R3 can be adjusted
The in-phase input end signal of joint comparator 121.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, maintain module 13 can include the first electric capacity C1 (example
Such as electrochemical capacitor), first end of the first electric capacity C1 is defeated with the first of the outfan of comparison module 12 and control chip 15 respectively
Enter end (such as Vout pin) to be connected, the second end ground connection of the first electric capacity C1.Specifically, discharged by the first electric capacity C1,
3rd resistance R3 and comparator 121 form positive feedback to maintain the time that i.e. button 2 is triggered time triggering signal, and the 3rd
The resistance size of resistance R3 and the capacitance size of the first electric capacity C1 can according to maintain module 13 actual maintain trigger signal time
Between choose.Specifically, in one embodiment of the invention, when the first input end voltage of control chip 15 is timing,
First electric capacity C1 charging, when the first input end voltage of control chip 15 is 0, the first electric capacity C1 electric discharge, by the 3rd
Resistance R3 positive feedback, maintains the first input end voltage of control chip 15 to continue as high level, until the electricity of the first electric capacity C1
Force down in certain point.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, interrupt generation module 14 can include the second electric capacity
C2 (such as ceramic disc capacitor), first end of the second electric capacity C2 is connected with the outfan of comparison module 12, the second electric capacity C2's
Second end is connected with second input (such as INT pin) of control chip 15, and the capacitance of the second electric capacity C2 can basis
The intensity of actual interrupt signal is chosen.Specifically, in one embodiment of the invention, when the first of control chip 15
Input terminal voltage moment is timing by 0 upset, owing to electric capacity has logical AC characteristic, and the second input meeting of control chip 15
Response generation high level is as interrupt signal, when the first input end voltage of control chip 15 is continuously high level, due to electricity
Container has stopping direct current characteristic, and the second input terminal voltage of control chip 15 becomes 0.
Further, in one embodiment of the invention, in household electrical appliance, button detection trigger device 1 can also include making an uproar
Sound cancellation module 16, noise cancellation module 16 respectively with voltage acquisition module 11, the offer end of predeterminated voltage and comparison module
12 are connected, and noise cancellation module 16 is for eliminating the noise between the voltage of collection and predeterminated voltage, to avoid comparator 121
Produce upset by mistake.Specifically, in one embodiment of the invention, as in figure 2 it is shown, noise cancellation module 16 can include
3rd electric capacity C3, first end of the 3rd electric capacity C3 respectively with outfan and the homophase of comparator 121 of voltage acquisition module 11
Input is connected, second end of the 3rd electric capacity C3 respectively with predeterminated voltage end and the inverting input phase of comparator 121 are provided
Even.Specifically, the 3rd electric capacity C3 gathers according to voltage acquisition module 11 as the synchronous capacitor of comparator 121, capacitance
Noise signal strength between voltage and predeterminated voltage is chosen.Wherein, if the in-phase input end of comparator 121 is made an uproar
Sound, leads to AC characteristic owing to electric capacity has stopping direct current, therefore noise is also added on the inverting input of comparator 121, therefore comparator
Between in-phase input end and the inverting input of 121, voltage difference does not changes, and the output level of comparator 121 does not overturns.
Further, in one embodiment of the invention, in household electrical appliance, button detection trigger device 1 can also include pre-
If voltage provides module 17, predeterminated voltage provides module 17 to be connected with comparison module 12, is used for generating predeterminated voltage.Specifically
Ground, in one embodiment of the invention, as in figure 2 it is shown, predeterminated voltage provides module 17 can include the 4th resistance R4
And Zener diode D.Wherein, first end of the 4th resistance R4 and power supply (such as power supply VCC/VDD, power supply VCC/VDD
Output positive voltage) it is connected.The negative electrode of Zener diode D and second end of the 4th resistance R4 are connected, the sun of Zener diode D
Pole ground connection, the negative electrode of Zener diode D as the offer end of predeterminated voltage to provide predeterminated voltage, the 4th resistance R4 as than
The relatively current-limiting resistance of the inverting input of device 121, by the regulation resistance of the 4th resistance R4, the voltage stabilizing value of Zener diode D
The size of predeterminated voltage can be regulated.
Button detection trigger device in household electrical appliance according to embodiments of the present invention, gathers the electricity of button by voltage acquisition module
Press, and then the voltage of collection and predeterminated voltage are compared and trigger signal to generate by comparison module, and by maintaining module dimension
Hold the triggering signal of comparison module output, and after interruption generation module is according to triggering signal generation interrupt signal, control core
Sheet reads the triggering signal maintaining module to maintain according to interrupt signal.In these household electrical appliance, button detection trigger device is only at button
When being triggered, produce and interrupt to control chip to realize the detection optimal operating point of button, be possible not only to greatly reduce controlling core
Taking of sheet resource, more can allow triggering signal maintain the regular hour, it is achieved time delay disappears and trembles.
In order to realize above-described embodiment, the present invention also proposes a kind of household electrical appliance, and these household electrical appliance include button 2 and above-mentioned
Button detection trigger device 1 in household electrical appliance.
Household electrical appliance according to embodiments of the present invention, by button detection trigger device in household electrical appliance when button is triggered,
Produce and interrupt to control chip to realize the detection optimal operating point of button, be possible not only to greatly reduce control chip resource is accounted for
With, triggering signal more can be allowed to maintain the regular hour, it is achieved time delay disappears and trembles.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, ability
The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in territory
Row combines and combination.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed
Or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In flow chart or at this, any process described otherwise above or method description are construed as, and represent and include one
Or the module of code, fragment or the part of the executable instruction of the more step for realizing specific logical function or process,
And the scope of the preferred embodiment of the present invention includes other realization, wherein can not press order that is shown or that discuss,
Including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be by the present invention's
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or the logic described otherwise above at this and/or step, for example, it is possible to be considered as reality
The sequencing list of the executable instruction of existing logic function, may be embodied in any computer-readable medium, for instruction
Execution system, device or equipment (system such as computer based system, including processor or other can perform from instruction
System, device or equipment instruction fetch also perform the system instructed) use, or combine these instruction execution systems, device or set
Standby and use.For the purpose of this specification, " computer-readable medium " can be any can to comprise, store, communicate, propagate
Or transmission procedure for instruction execution system, device or equipment or combines these instruction execution systems, device or equipment and uses
Device.The more specifically example (non-exhaustive list) of computer-readable medium includes following: have one or more cloth
The electrical connection section (electronic installation) of line, portable computer diskette box (magnetic device), random access memory (RAM), read-only
Memorizer (ROM), erasable read only memory (EPROM or flash memory) of editing, fiber device, and portable
Compact disc read-only memory (CDROM).It addition, computer-readable medium can even is that the paper that can print described program thereon
Or other suitable media, because then can carry out editing, solving such as by paper or other media are carried out optical scanning
Translate or be processed to electronically obtain described program with other suitable methods if desired, be then stored in computer
In memorizer.
Should be appreciated that each several part of the present invention can realize by hardware, software, firmware or combinations thereof.In above-mentioned reality
Execute in mode, software that multiple steps or method in memory and can be performed by suitable instruction execution system with storage or
Firmware realizes.Such as, if realized with hardware, with the most the same, available well known in the art under
Any one or their combination in row technology realize: have the logic gates for data signal realizes logic function
Discrete logic, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), existing
Field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can
Completing instructing relevant hardware by program, described program can be stored in a kind of computer-readable recording medium,
This program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to be each
Individual unit is individually physically present, it is also possible to two or more unit are integrated in a module.Above-mentioned integrated module was both
Can realize to use the form of hardware, it would however also be possible to employ the form of software function module realizes.If described integrated module with
The form of software function module realizes and as independent production marketing or when using, it is also possible to be stored in a computer-readable
Take in storage medium.
Storage medium mentioned above can be read only memory, disk or CD etc..Although above it has been shown and described that
Embodiments of the invention, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention,
Above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (10)
1. button detection trigger device in household electrical appliance, it is characterised in that including:
Voltage acquisition module, described voltage acquisition module is connected with button, for gathering the voltage of described button；
Comparison module, described comparison module is connected with described voltage acquisition module, for being entered with predeterminated voltage by the voltage of collection
Row compares to generate triggering signal；
Maintaining module, described maintenance module is connected with described comparison module, and described maintenance module maintains the output of described comparison module
Triggering signal；
Interrupt generation module, for producing interrupt signal according to described triggering signal；And
Control chip, described control chip is connected with described maintenance module and described interruption generation module respectively, described control core
Sheet reads, according to described interrupt signal, the triggering signal that described maintenance module maintains.
2. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that described voltage acquisition mould
Block includes:
First resistance, the first end of described first resistance is connected with described button；And
Second resistance, the first end of described second resistance is connected with the second end of described first resistance, the of described second resistance
Two end ground connection, the first end of described second resistance is as the outfan of described voltage acquisition module.
3. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that described comparison module bag
Include:
Comparator, the in-phase input end of described comparator is connected with the outfan of described voltage acquisition module, described comparator
Inverting input is connected with the offer end of predeterminated voltage, and the outfan of described comparator is as the outfan of described comparison module；
And
3rd resistance, described first end of the 3rd resistance is connected with the in-phase input end of described comparator, described 3rd resistance
Second end is connected with the outfan of described comparator.
4. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that described maintenance module bag
Include:
First electric capacity, the first end of described first electric capacity respectively with the outfan of described comparison module and the of described control chip
One input is connected, the second end ground connection of described first electric capacity.
5. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that described interruption produces mould
Block includes:
Second electric capacity, the first end of described second electric capacity is connected with the outfan of described comparison module, the of described second electric capacity
Two ends are connected with the second input of described control chip.
6. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that also include:
Noise cancellation module, described noise cancellation module respectively with described voltage acquisition module, the offer end of predeterminated voltage and institute
Stating comparison module to be connected, described noise cancellation module is for eliminating the noise between the voltage of described collection and described predeterminated voltage.
7. button detection trigger device in household electrical appliance as claimed in claim 6, it is characterised in that described noise eliminates mould
Block includes:
3rd electric capacity, the first end of described 3rd electric capacity respectively with the outfan of described voltage acquisition module and described comparator
In-phase input end is connected, the second end of described 3rd electric capacity respectively with described predeterminated voltage the anti-of end and described comparator is provided
Phase input is connected.
8. button detection trigger device in household electrical appliance as claimed in claim 1, it is characterised in that also include:
Predeterminated voltage provides module, and described predeterminated voltage provides module to be connected with described comparison module, is used for generating described presetting
Voltage.
9. button detection trigger device in household electrical appliance as claimed in claim 8, it is characterised in that described predeterminated voltage carries
Include for module:
4th resistance, the first end of described 4th resistance is connected with power supply；And
Zener diode, the negative electrode of described Zener diode is connected with the second end of described 4th resistance, described Zener diode
Plus earth, the negative electrode of described Zener diode is as the offer end of predeterminated voltage.
10. household electrical appliance, it is characterised in that include button and household electric as claimed in any one of claims 1-9 wherein
Button detection trigger device in device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115125.3A CN106033964B (en) | 2015-03-16 | 2015-03-16 | Button triggers detection device and has its domestic appliance among domestic appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115125.3A CN106033964B (en) | 2015-03-16 | 2015-03-16 | Button triggers detection device and has its domestic appliance among domestic appliance |
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| Publication Number | Publication Date |
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| CN106033964A true CN106033964A (en) | 2016-10-19 |
| CN106033964B CN106033964B (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510115125.3A Active CN106033964B (en) | 2015-03-16 | 2015-03-16 | Button triggers detection device and has its domestic appliance among domestic appliance |
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| CN110736923A (en) * | 2019-10-21 | 2020-01-31 | 珠海格力电器股份有限公司 | kinds of key detection circuits, touch screen and heating and ventilation equipment |
| CN113054984A (en) * | 2021-05-20 | 2021-06-29 | 上海艾为微电子技术有限公司 | Pressure-sensitive detection circuit, chip, system and pressure-sensitive detection method |
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| Publication number | Publication date |
|---|---|
| CN106033964B (en) | 2020-01-03 |
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