CN113786148A - Detection circuit, detection device and dish-washing machine - Google Patents
Detection circuit, detection device and dish-washing machine Download PDFInfo
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- CN113786148A CN113786148A CN202111006336.5A CN202111006336A CN113786148A CN 113786148 A CN113786148 A CN 113786148A CN 202111006336 A CN202111006336 A CN 202111006336A CN 113786148 A CN113786148 A CN 113786148A
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- 238000001514 detection method Methods 0.000 title claims abstract description 148
- 238000004851 dishwashing Methods 0.000 title description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 14
- 235000014676 Phragmites communis Nutrition 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4257—Details of the loading door
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4257—Details of the loading door
- A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4274—Arrangement of electrical components, e.g. control units or cables
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/26—Loading door status, e.g. door latch opened or closed state
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/32—Stopping or disabling machine operation, including disconnecting the machine from a network, e.g. from an electrical power supply
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
The application discloses detection circuitry, detection device and dish washer, when closing through the machine door when dish washer, the switch module closure switches on, the pulse detection signal of signal generation module output exports to processing module through the switch module that switches on, so that processing module receives the frequency to the pulse detection signal that receives and detects, and then judge the machine door of dish washer and be in the closed condition when detecting the frequency of this pulse detection signal and be in presetting the frequency range, because processing module detects be the frequency of pulse detection signal, consequently avoided processing module to lead to the closed condition of erroneous judgement machine door because of the effect of the interference signal that the level is not in presetting the frequency range.
Description
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to a detection circuit, a detection device and a dish washing machine.
Background
In the dishwasher, whether the open and close state of the door of the dishwasher can be correctly detected or not can directly relate to the personal safety of users. For example, when the dishwasher is in the washing and heating process, after the user opens the door, if the door opening state of the door cannot be correctly detected, the dishwasher mistakenly considers that the door is still in the closing state, the dishwasher does not suspend the washing and heating process, and the high-temperature washing water in the dishwasher in the washing and heating process may be sprayed out from the opened door to scald the user.
The conventional method for detecting the door closing state of the dishwasher is: when the gate is in a closed state, outputting a closed level (high level or low level) to a detection port of the processor, and judging whether the gate is in the closed state by the processor according to the level input by the detection port; for example, if the gate outputs a high level when the gate is in the closed state, the processor determines that the gate is in the closed state when the detection port of the processor inputs a high level. The conventional method has the following problems: 1. when the detection port of the processor is polluted by external pollutants, the level of the detection port is maintained to be a closing level (high level or low level), so that the processor can judge that the machine door is in a closing state after the machine door is opened; 2. when the internal circuit of the detection port of the processor is damaged by large current and high voltage (such as static electricity) poured into the external circuit, the circuit of the detection port of the processor fails, so that a closing level (high level or low level) is maintained, and the processor can also judge that the machine door is in a closing state after the machine door is opened; the above problem causes poor stability of detection of the closed state of the door of the conventional dishwasher, and the situation that the door is erroneously detected as the closed state when the door is in the open state is likely to occur.
Disclosure of Invention
The application aims to provide a detection circuit, and aims to solve the problem that the detection stability of a traditional detection circuit in the process of detecting the closing state of a machine door of a dishwasher is poor.
A first aspect of an embodiment of the present application provides a detection circuit for a dishwasher, comprising:
a signal generation module configured to output a pulse detection signal;
the switch module is connected with the signal generating module and is configured to be closed and conducted when a machine door of the dishwasher is closed and switch over the pulse detection signal when the machine door of the dishwasher is conducted;
and the processing module is connected with the switch module and configured to receive the pulse detection signal and judge that the gate is in a closed state when the frequency of the pulse detection signal is within a preset frequency range.
In one embodiment, the processing module is specifically configured to receive the pulse detection signal, and determine that the door is in a closed state when the frequency of the pulse detection signal is within a preset frequency range within a preset time period.
In one embodiment, the predetermined frequency range is 5 to 300 Hz.
In one embodiment, the preset time period is 0.3 to 1 second.
In one embodiment, the preset duration is 0.5 second.
In one embodiment, the switch module comprises a reed switch;
the first end of the reed switch is connected to the pulse detection signal input end of the switch module, and the pulse detection signal input end of the switch module is used for inputting the pulse detection signal; the second end of the reed switch is connected to the pulse detection signal output end of the switch module, and the pulse detection signal output end of the switch module is used for outputting the pulse detection signal.
In one embodiment, the signal generation module and the processing module are integrated in the same processing chip;
the output end of the processing chip is connected to the pulse detection signal output end of the signal generation module, and the pulse detection signal output end of the signal generation module is used for outputting the pulse detection signal; the input end of the processing chip is connected to the pulse detection signal input end of the processing module, and the pulse detection signal input end of the processing module is used for inputting the pulse detection signal.
In one embodiment, the pulse detection signal is a square wave signal or a triangular wave signal.
A second aspect of the embodiments of the present application further provides a detection apparatus, including the detection circuit according to any one of the first aspect.
The third aspect of the embodiments of the present application further provides a dishwasher, including the detection circuit as described in any one of the first aspect.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: when the door of the dishwasher is closed, the switch module is closed and conducted, the pulse detection signal output by the signal generation module is output to the processing module through the conducted switch module, so that the processing module detects the frequency of the received pulse detection signal, and judges that the door of the dishwasher is in a closed state when the frequency of the pulse detection signal is detected to be in a preset frequency range.
Drawings
FIG. 1 is an exemplary functional block diagram of a detection circuit provided by an embodiment of the present application;
FIG. 2 is a first exemplary circuit schematic of a detection circuit provided by an embodiment of the present application;
fig. 3 is a schematic circuit diagram of a second example of a detection circuit provided in an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, the present application provides a detection circuit for a dishwasher, the detection circuit including a signal generation module 100, a switch module 200, and a processing module 300.
A signal generation module 100 configured to output a pulse detection signal.
And a switch module 200 connected to the signal generating module 100 and configured to close and conduct when a door of the dishwasher is closed and to switch the pulse detection signal when conducting.
And a processing module 300, connected to the switch module 200, configured to receive the pulse detection signal, and determine that the door is in a closed state when the frequency of the pulse detection signal is within a preset frequency range.
In this embodiment, when the door of the dishwasher is closed, the switch module 200 is closed along with the closing of the door of the dishwasher, and the switch module 200 is closed and then the inside thereof is turned on. The pulse detection signal output by the signal generating module 100 is output to the processing module 300 through the turned-on switching module 200. The processing module 300 receives the pulse detection signal, detects the frequency of the pulse detection signal, and determines that the door of the dishwasher is in a closed state when the frequency of the pulse detection signal is detected to be within a preset frequency range. Because the processing module 300 determines whether the door is in the closed state by detecting whether the frequency of the pulse detection signal is within the preset frequency range, when the detection port of the processing module 300 is contaminated by external contaminants or when the detection port of the processing module 300 is damaged, the detection port of the processing module 300 is maintained at a high level or a low level, because the level of the high level or the low level is not changed, the frequency of the high level or the low level is not within the preset frequency range, and the processing module 300 does not erroneously determine that the door is in the closed state because of the high level or the low level.
Therefore, when the dishwasher is in a washing and heating process, when the door of the dishwasher is opened, even if the detection port of the processing module 300 breaks down, the detection port is maintained at a high level or a low level, the door of the dishwasher can also pass through the frequency of the signal input by judging pulses, thereby identifying that the pulse detection signal has stopped being input, and therefore, the door of the dishwasher is judged to be in a non-closing state, the dishwasher can immediately stop a washing and heating program according to the non-closing state of the door, and the dishwasher which cannot effectively identify the closing state of the door and leads to the washing and heating process can spray high-temperature washing water to the outside of the dishwasher through the opened door, thereby avoiding user injuries caused by the failure.
In one embodiment, the processing module 300 can output a control signal to a main control module of the dishwasher for controlling the operation of the washing and heating program according to the closed state and the non-closed state of the door. The main control module keeps the washing and heating program running when inputting the control signal of the closed state, and stops the washing and heating program running when inputting the control signal of the non-closed state.
In another embodiment, the process module 300 is simultaneously used to control the operation of a washing and heating program of a dishwasher. When the processing module 300 judges that the machine door is in a closed state, the washing heating program is kept running; when the processing module 300 judges that the machine door is in the non-closing state, the washing and heating program is stopped.
In one embodiment, the processing module 300 is specifically configured to receive the pulse detection signal, and determine that the door is in a closed state when the frequencies of the pulse detection signal are all within a preset frequency range within a preset time duration.
In this embodiment, after the door of the dishwasher is closed, when the processing module 300 inputs the pulse detection signal for the preset duration and detects that the frequency of the pulse detection signal is within the preset frequency range within the preset duration, the processing module 300 determines that the door is in the closed state. Because the logic of the processing module 300 for judging that the door is in the closed state is that the pulse detection signal is input to the processing module 300 for the duration of the preset time, the processing module 300 can avoid that the door is judged in the closed state by mistake due to the fact that the processing module 300 receives an external short interfering signal (the frequency of the interfering signal is within the preset frequency range), and the judgment accuracy of the closed state of the door is improved.
In practical application, in the process of washing and heating the dishwasher, after the door is opened, the detection module can not detect the input pulse detection signal, so that the door is judged to be in a non-closed state, and the detection module controls the washing and heating program of the dishwasher to stop; when the gate is closed again, the processing module 300 receives the pulse detection signal again, because the processing module 300 needs to determine that the gate is in the closed state when the pulse detection signal is received within the preset time period, therefore, the processing module 300 does not immediately determine that the door is in the closed state to control the recovery of the washing and heating program, and the corresponding device for operating the washing and heating program is not immediately started, therefore, after the machine door is opened again within the preset time, the corresponding equipment for running the washing and heating program is always kept in the off state within the time period of closing and opening the machine door again, the corresponding equipment for running the washing and heating program is prevented from being started and stopped frequently due to the false closing state of the machine door (the machine door is opened again within the preset time after being closed), and the service life of the corresponding equipment for running the washing and heating program is prolonged.
In one embodiment, the predetermined frequency range is 5 to 300 Hz.
In this embodiment, the preset frequency range of the pulse detection signal detected by the processing module 300 is 5 to 300Hz, which can effectively distinguish the frequency of the pulse detection signal from the interference signal, thereby preventing the interference signal from causing the processing module 300 to misjudge the closing state of the door of the dishwasher.
In one embodiment, the preset time period is 0.3 to 1 second.
In this embodiment, when the pulse detection signal detected by the processing module 300 is within the preset frequency range within the preset time period of 0.3 to 1 second, the processing module 300 determines that the door of the dishwasher is in the closed state. When the preset time is 0.3 to 1 second, the processing module 300 can effectively identify the door closing state of the airplane door through the pulse detection signal, and meanwhile, the required time for identifying the door closing state of the airplane door can be reduced, so that the problem of low detection efficiency caused by overlong detection time of the door closing state of the airplane door is avoided.
In one embodiment, the preset duration is 0.5 second.
In this embodiment, when the preset time is 0.5 seconds, the relationship between the detection time for identifying the door-closed state of the door and the validity of the processing module 300 is in a better state. The optimal state means that the preset time of 0.5 second can meet the validity required by identifying the closing state of the machine door, and meanwhile, the time required by identification can be greatly reduced.
Referring to fig. 2, in one embodiment, the switch module 200 includes a reed switch SW 1.
A first end of the reed switch SW1 is connected to a pulse detection signal input end OUT of the switch module 200, and the pulse detection signal input end OUT of the switch module 200 is used for inputting the pulse detection signal; a second end of the reed switch SW1 is connected to a pulse detection signal output terminal IN of the switch module 200, and the pulse detection signal output terminal IN of the switch module 200 is used for outputting the pulse detection signal.
Referring to fig. 2, in an embodiment, the signal generating module 100 and the processing module 300 are integrated in the same processing chip U1.
An output end IN of the processing chip U1 is connected to a pulse detection signal output end IN of the signal generation module 100, and the pulse detection signal output end IN of the signal generation module 100 is used for outputting the pulse detection signal; the input end OUT of the processing chip U1 is connected to the pulse detection signal input end OUT of the processing module 300, and the pulse detection signal input end OUT of the processing module 300 is used for inputting the pulse detection signal.
The detection circuit shown in fig. 2 is explained below with reference to the working principle:
the processing chip U1 continuously detects the signal inputted from the input terminal OUT of the processing chip U1.
When the door of the dishwasher is closed, the distance between the magnetic element in the door of the dishwasher and the reed switch SW1 is reduced, so that the reed switch SW1 is closed and conducted under the magnetic force of the magnetic element. After the reed switch SW1 is turned on, a pulse detection signal output by the output terminal IN of the processing chip U1 is output to the input terminal OUT of the processing chip U1 through the reed switch SW1, the processing chip U1 detects the input pulse detection signal, and when the frequency of the pulse detection signal meets the preset frequency range within the preset time, the processing chip U1 judges that the door of the dishwasher is IN a closed state.
When the door of the dishwasher is opened, the distance between the magnetic piece in the door of the dishwasher and the reed switch SW1 becomes large, the magnetic force of the magnetic piece is not enough to close the reed switch SW1, and therefore the reed switch SW1 is opened. After the reed switch SW1 is turned on, the pulse detection signal outputted from the output IN of the processing chip U1 cannot be outputted to the input OUT of the processing chip U1 through the reed switch SW 1. Since the input terminal OUT of the processing chip U1 does not receive the pulse detection signal, the processing chip U1 does not detect the pulse detection signal, and thus determines that the door of the dishwasher is in a non-closed state. At this time, even if the input terminal OUT of the processing chip U1 is contaminated by external contaminants or the input terminal OUT of the processing chip U1 is damaged, the input terminal OUT of the processing chip U1 is maintained at a high level or a low level, because the frequency of the high level or the low level is not within the preset frequency range, the processing chip U1 can correctly determine that the door is in the non-closed state, and the door is not erroneously determined to be in the closed state due to the high level or the low level.
Referring to fig. 3, in an embodiment, the switch module 200 includes a reed switch SW1 and a current limiting resistor R1. The current limiting resistor R1 is connected in series with the reed switch SW1, and the current limiting resistor R1 is used for reducing the amplitude of the pulse detection signal.
The detection circuit has the advantages that the number of parts required by the structure of the detection circuit is small, the circuits are simple, the corresponding arrangement on the dish washing machine is simple and convenient, the failure rate is low, and the production and manufacturing cost is low.
In one embodiment, the pulse detection signal is a square wave signal or a triangular wave signal.
The embodiment of the present application further provides a detection apparatus, which includes the detection circuit according to any of the above embodiments, because the detection apparatus of the present embodiment includes the detection circuit according to any of the above embodiments, the detection apparatus of the present embodiment at least includes the corresponding beneficial effects of the detection circuit according to any of the above embodiments.
The embodiment of the application further provides a dishwasher, which comprises the detection circuit of any one of the above embodiments, and because the dishwasher of the embodiment comprises the detection circuit of any one of the above embodiments, the dishwasher of the embodiment at least comprises the beneficial effects corresponding to the detection circuit of any one of the above embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A detection circuit for a dishwasher, comprising:
a signal generation module configured to output a pulse detection signal;
the switch module is connected with the signal generating module and is configured to be closed and conducted when a machine door of the dishwasher is closed and switch over the pulse detection signal when the machine door of the dishwasher is conducted;
and the processing module is connected with the switch module and configured to receive the pulse detection signal and judge that the gate is in a closed state when the frequency of the pulse detection signal is within a preset frequency range.
2. The detection circuit of claim 1, wherein the processing module is specifically configured to receive the pulse detection signal and determine that the gate is in a closed state when the frequencies of the pulse detection signal are within a predetermined frequency range for a predetermined duration.
3. A detection circuit as claimed in any one of claims 1 or 2, wherein the predetermined frequency range is 5 to 300 Hz.
4. The detection circuit of claim 2, wherein the predetermined period of time is 0.3 to 1 second.
5. The detection circuit of claim 4, wherein the predetermined duration is 0.5 seconds.
6. The detection circuit of claim 1, wherein the switch module comprises a reed switch;
the first end of the reed switch is connected to the pulse detection signal input end of the switch module, and the pulse detection signal input end of the switch module is used for inputting the pulse detection signal; the second end of the reed switch is connected to the pulse detection signal output end of the switch module, and the pulse detection signal output end of the switch module is used for outputting the pulse detection signal.
7. The detection circuit of claim 1, wherein the signal generation module and the processing module are integrated in a same processing chip;
the output end of the processing chip is connected to the pulse detection signal output end of the signal generation module, and the pulse detection signal output end of the signal generation module is used for outputting the pulse detection signal; the input end of the processing chip is connected to the pulse detection signal input end of the processing module, and the pulse detection signal input end of the processing module is used for inputting the pulse detection signal.
8. The detection circuit of claim 1, wherein the pulse detection signal is a square wave signal or a triangular wave signal.
9. A detection device comprising a detection circuit according to any one of claims 1 to 8.
10. A dishwasher, characterized by comprising a detection circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111006336.5A CN113786148A (en) | 2021-08-30 | 2021-08-30 | Detection circuit, detection device and dish-washing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111006336.5A CN113786148A (en) | 2021-08-30 | 2021-08-30 | Detection circuit, detection device and dish-washing machine |
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| CN113786148A true CN113786148A (en) | 2021-12-14 |
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Application publication date: 20211214 |