CN111322821A - Refrigerator and identification method of control panel machine type thereof - Google Patents
Refrigerator and identification method of control panel machine type thereof Download PDFInfo
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- CN111322821A CN111322821A CN202010108511.0A CN202010108511A CN111322821A CN 111322821 A CN111322821 A CN 111322821A CN 202010108511 A CN202010108511 A CN 202010108511A CN 111322821 A CN111322821 A CN 111322821A
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- control panel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/04—Calculation of parameters
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerator and a method for identifying the type of a control panel thereof, wherein the refrigerator comprises a control panel; the control panel comprises a voltage conversion module and an MCU (microprogrammed control unit), wherein the MCU comprises an A/D (analog/digital) port, an analog-to-digital converter and a logic operation unit; the voltage conversion module receives a power supply voltage signal provided by a power supply, converts the received power supply voltage signal into a voltage signal with a preset voltage value, and outputs the voltage signal through an output end of the voltage conversion module; the A/D port receives a voltage signal with a preset voltage value output by the voltage conversion module; the analog-to-digital converter performs binary conversion on a voltage signal with a preset voltage value to obtain a binary value to be identified; and the logic operation unit determines the control panel model corresponding to the binary value to be identified according to the corresponding relation between the binary value and the control panel model. By adopting the embodiment of the invention, the identification of the control panel machine type can be realized no matter under the condition of single MCU or multiple MCUs, the identification quantity is large, and the production cost is low.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a refrigerator and a method for identifying a control panel machine type of the refrigerator.
Background
With the increasing types and configurations of refrigerators, the number of control boards is also increasing, and in order to facilitate management of the control boards, a general requirement is generally made on the control boards. Due to different refrigerator types and configurations (such as several temperature zones, WiFi function or not), the control parameters of the corresponding control board on the software are different, so that different control boards can be generated. In the use process of the refrigerator, the type of a refrigerator control panel needs to be identified so as to match corresponding control parameters, and therefore the function of the refrigerator is achieved.
Currently, the refrigerator control board model is generally identified by the following two ways:
firstly, a double-MCU (micro controller Unit) control system is adopted for identification, if a first control board is communicated with a second control board, the first control board sends a model identification code to the second control board, and thus the model of the first control board is identified;
secondly, a common I/O port of the MCU is connected with a power supply VCC (high level) or GND (low level), and the MCU identifies the model of the control panel according to the level of the I/O port.
However, the inventor finds that, in the process of implementing the present invention, for the first mode, since the first mode is only suitable for the case where the refrigerator includes a plurality of MCU control systems, when only a single MCU or two MCUs in the refrigerator have a communication fault, the identification of the control panel model cannot be realized, which has a great limitation; for the second mode, because 1I/O port of the MCU has only two levels, i.e. 1I/O port can only identify two control board models, the number of identifiable modes is limited, and if the number of identifiable modes is large, the MCU occupies more I/O ports.
Disclosure of Invention
The embodiment of the invention provides a refrigerator and an identification method of a control panel machine type thereof, which can realize identification of the control panel machine type no matter under the condition of single MCU or multiple MCUs, and have the advantages of less occupied I/O ports, more identifiable quantity of corresponding control panel machine types and lower production cost.
In order to achieve the above object, an embodiment of the present invention provides a refrigerator, including a control panel;
wherein, the control panel includes:
the input end of the voltage conversion module is connected with a power supply, and the voltage conversion module is used for receiving a power supply voltage signal provided by the power supply through the input end of the voltage conversion module, converting the power supply voltage signal into a voltage signal with a preset voltage value and outputting the voltage signal through the output end of the voltage conversion module;
an MCU, the MCU comprising:
the A/D port is connected with the output end of the voltage conversion module so as to receive the voltage signal of the preset voltage value output by the voltage conversion module;
the analog-to-digital converter is connected with the A/D port and used for carrying out binary conversion on the voltage signal with the preset voltage value to obtain a binary value to be identified;
and the logic operation unit is connected with the analog-to-digital converter so as to determine the control panel machine type corresponding to the binary value to be identified according to the corresponding relation between the binary value and the control panel machine type.
As an improvement of the above solution, the voltage conversion module includes a first resistor and a second resistor; wherein the content of the first and second substances,
the first end of the first resistor is connected with the input end of the voltage conversion module, and the second end of the first resistor is connected with the output end of the voltage conversion module;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is grounded.
As an improvement of the above scheme, the second resistor is an adjustable resistor.
As an improvement of the above scheme, the control panel further comprises an anti-interference module;
the A/D port is connected with the output end of the voltage conversion module through the anti-interference module,
the anti-interference module is used for reducing interference on the voltage signal with the preset voltage value in the transmission process.
As an improvement of the above scheme, the interference rejection module comprises a third resistor and a first capacitor; wherein the content of the first and second substances,
the first end of the third resistor is connected with the output end of the voltage conversion module, and the second end of the third resistor is connected with the A/D port;
the first end of the first capacitor is grounded, and the second end of the first capacitor is connected with the second end of the third resistor.
Correspondingly, the embodiment of the invention also provides a method for identifying the type of the control panel of the refrigerator, which is applied to the refrigerator and comprises the following steps:
receiving a voltage signal with a preset voltage value output by the voltage conversion module;
performing binary conversion on the voltage signal with the preset voltage value to obtain a binary value to be identified;
and determining the control panel machine type corresponding to the binary number to be identified according to the corresponding relation between the binary number and the control panel machine type.
Compared with the prior art, the embodiment of the invention provides a refrigerator and a method for identifying the type of a control panel thereof, wherein the refrigerator comprises the control panel; the control panel comprises a voltage conversion module and an MCU (microprogrammed control unit), wherein the MCU comprises an A/D (analog/digital) port, an analog-to-digital converter and a logic operation unit; the voltage conversion module receives a power supply voltage signal provided by a power supply, converts the received power supply voltage signal into a voltage signal with a preset voltage value, and outputs the voltage signal through an output end of the voltage conversion module; the A/D port receives a voltage signal with a preset voltage value output by the voltage conversion module; the analog-to-digital converter performs binary conversion on a voltage signal with a preset voltage value to obtain a binary value to be identified; and the logic operation unit determines the control panel model corresponding to the binary value to be identified according to the corresponding relation between the binary value and the control panel model. Since the refrigerator is realizedIn the process of identifying the type of the control panel, only one MCU is needed, so that the identification of the type of the control panel can be realized no matter under the condition of single MCU or multiple MCUs, the limitation is reduced, and the analog-to-digital converter with n bits corresponds to 2nEach code can be used for corresponding to one control board model, so that the recognizable number of the control board models corresponding to the refrigerator can reach 2nThe control panel type identification quantity is greatly increased, the number of occupied I/O ports is small, the circuit structure of the control panel is simple, and the production cost is low.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a refrigerator provided by the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of a refrigerator provided by the present invention.
Fig. 3 is a schematic structural diagram of a refrigerator according to another embodiment of the present invention.
Fig. 4 is a schematic flow chart of an embodiment of a method for identifying a model of a control panel of a refrigerator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1, a schematic structural diagram of an embodiment of a refrigerator provided by the present invention is shown.
An embodiment of the present invention provides a refrigerator 100, including a control board 110;
wherein the control board 110 includes:
the input end 111a of the voltage conversion module 111 is connected to a power supply, and the voltage conversion module 111 is configured to receive a power supply voltage signal provided by the power supply through the input end 111a of the voltage conversion module 111, convert the power supply voltage signal into a voltage signal with a preset voltage value, and output the voltage signal through the output end 111b of the voltage conversion module 111;
an MCU112, the MCU112 comprising:
the a/D port 112A, where the a/D port 112A is connected to the output end 111b of the voltage conversion module 111 to receive the voltage signal of the preset voltage value output by the voltage conversion module 111;
the analog-to-digital converter 1121 is connected to the a/D port 112A, so as to perform binary conversion on the voltage signal of the preset voltage value to obtain a binary value to be identified;
and the logical operation unit 1122, where the logical operation unit 1122 is connected to the analog-to-digital converter 1121 to determine a control panel model corresponding to the binary value to be identified according to a corresponding relationship between the binary value and the control panel model.
Specifically, the input end 111a of the voltage conversion module 111 is connected to a power supply which is distributed by an external power adapter or a machine.
In an alternative embodiment, the MCU112 stores a correspondence relationship between binary values and control panel models in advance, and in the correspondence relationship, one binary value corresponds to one control panel model for identifying the control panel model. When the refrigerator 100 needs to identify the type of the control panel thereof, the voltage conversion module 111 converts a received power supply voltage signal provided by the power supply into a voltage signal with a preset voltage value, and outputs the voltage signal with the preset voltage value to the a/D port 112A of the MCU112 through the output end 111b thereof; the analog-to-digital converter 1121 of the MCU112 converts the voltage signal of the preset voltage value received through the a/D port 112A into a binary value; the logical operation unit 1122 of the MCU112 determines the control panel model corresponding to the binary value obtained by the conversion according to the correspondence between the binary value stored in advance and the control panel model, thereby realizing the identification of the control panel model of the refrigerator.
It will be appreciated that since the n-bit analog-to-digital converter corresponds to 2nIndividual plaitCodes, and each code can be used for corresponding to one control board model, when the MCU only has a single a/D port 112A and a single n-bit analog-to-digital converter 1121, the recognizable number of the corresponding control board model can reach 2nA single, e.g., 8-bit, analog-to-digital converter 1121, a single A/D port 112A, may recognize a number of 28256, the recognizable number of control board models is greatly improved compared with the prior art.
In an optional embodiment, the control board 110 may further include m voltage conversion modules, m a/D ports 112A, and m n-bit analog-to-digital converters 1121, so that the recognizable number of corresponding control board models can be reached (2)n)mFor example, 2A/D ports, 2A/D converters 1121 with 8 bits, the recognizable number is (2)8)265536, the recognizable number of control board models is greatly increased.
The refrigerator provided by the embodiment of the invention comprises a control panel; the control panel comprises a voltage conversion module and an MCU (microprogrammed control unit), wherein the MCU comprises an A/D (analog/digital) port, an analog-to-digital converter and a logic operation unit; the voltage conversion module receives a power supply voltage signal provided by a power supply, converts the received power supply voltage signal into a voltage signal with a preset voltage value, and outputs the voltage signal through an output end of the voltage conversion module; the A/D port receives a voltage signal with a preset voltage value output by the voltage conversion module; the analog-to-digital converter performs binary conversion on a voltage signal with a preset voltage value to obtain a binary value to be identified; and the logic operation unit determines the control panel model corresponding to the binary value to be identified according to the corresponding relation between the binary value and the control panel model. In the process of identifying the type of the control panel of the refrigerator, only one MCU is needed, so that the identification of the type of the control panel can be realized no matter under the condition of single MCU or multiple MCUs, the limitation is reduced, and the n-bit analog-to-digital converter corresponds to 2nEach code can be used for corresponding to one control board model, so that the recognizable number of the control board models corresponding to the refrigerator can reach 2nThe number of the control board models can be identified, the number of occupied I/O ports is small, and the circuit structure of the control boardSimple and low production cost.
As a preferred embodiment, referring to fig. 2, the voltage conversion module 111 includes a first resistor R1 and a second resistor R2; wherein the content of the first and second substances,
a first end of the first resistor R1 is connected to the input end 111a of the voltage conversion module 111, and a second end of the first resistor R1 is connected to the output end 111b of the voltage conversion module 111;
the first end of the second resistor R2 is connected to the second end of the first resistor R1, and the second end of the second resistor R2 is grounded.
In this embodiment, the first resistor R1 and the second resistor R2 form a voltage divider circuit, so that the voltage value conversion of the power voltage signal is realized, and the circuit structure is simple and easy to implement. In an alternative embodiment, the resistance of the first resistor R1 may be fixed, and the resistance of the second resistor R2 may be changed, so as to convert the power supply voltage signal into voltage signals with different voltage values, so that the voltage values of the voltage signals received by the a/D port 112A are different, and accordingly different control board models are provided.
In a more preferred embodiment, in order to implement generalization of the control board, referring to fig. 3, the second resistor R2 may be an adjustable resistor, so that the same platform only needs to produce the same control board in advance, and then the resistance value of the second resistor R2 is adjusted to the resistance value required for converting the voltage of the voltage signal into the voltage corresponding to the model of the control board during production of the refrigerator, instead of producing the control boards corresponding to multiple different resistance values of the second resistor R2 in advance, so that the control board can be generalized, the types of the control boards to be produced are reduced, the material management efficiency is greatly improved, and the production cost of the refrigerator is reduced.
In a preferred embodiment, referring to fig. 2, the control board 110 further includes an anti-jamming module 113;
the a/D port 112A is connected to the output end 111b of the voltage conversion module 111 through the interference rejection module 113;
the anti-interference module 113 is configured to reduce interference on the voltage signal with the preset voltage value in the transmission process.
Optionally, referring to fig. 2, the immunity module 113 includes a third resistor R3 and a first capacitor C1; wherein the content of the first and second substances,
a first end of the third resistor R3 is connected to the output end 111b of the voltage conversion module 111, and a second end of the third resistor R3 is connected to the A/D port 112A;
the first end of the first capacitor C1 is grounded, and the second end of the first capacitor C1 is connected to the second end of the third resistor R3.
In this embodiment, the third resistor R3 and the first capacitor C1 form an anti-jamming circuit, which can reduce interference on a voltage signal with a preset voltage value in a transmission process from the voltage conversion module 111 to the a/D port 112A, so that the voltage value of the voltage signal received by the MCU is consistent with the preset voltage value, and thus the identification accuracy of the control panel model can be effectively ensured.
The above preferred embodiments may be arbitrarily combined to form a more preferred embodiment of the present invention.
Based on the refrigerator 100, fig. 4 exemplarily shows a flow of an identification method of a refrigerator controller board model, which may be executed by the MCU 112.
As shown in fig. 4, the method for identifying a refrigerator control board model according to this embodiment includes:
s201, receiving a voltage signal with a preset voltage value output by the voltage conversion module;
s202, performing binary conversion on the voltage signal of the preset voltage value to obtain a binary value to be identified;
s203, determining the control panel machine type corresponding to the binary number to be identified according to the corresponding relation between the binary number and the control panel machine type.
For the working principle of the method for identifying a refrigerator controller board model provided in this embodiment, reference is made to the relevant description of the refrigerator in the above embodiment, and details are not repeated here.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A refrigerator, characterized by comprising a control panel;
wherein, the control panel includes:
the input end of the voltage conversion module is connected with a power supply, and the voltage conversion module is used for receiving a power supply voltage signal provided by the power supply through the input end of the voltage conversion module, converting the power supply voltage signal into a voltage signal with a preset voltage value and outputting the voltage signal through the output end of the voltage conversion module;
an MCU, the MCU comprising:
the A/D port is connected with the output end of the voltage conversion module so as to receive the voltage signal of the preset voltage value output by the voltage conversion module;
the analog-to-digital converter is connected with the A/D port and used for carrying out binary conversion on the voltage signal with the preset voltage value to obtain a binary value to be identified;
and the logic operation unit is connected with the analog-to-digital converter so as to determine the control panel machine type corresponding to the binary value to be identified according to the corresponding relation between the binary value and the control panel machine type.
2. The refrigerator of claim 1, wherein the voltage conversion module includes a first resistor and a second resistor; wherein the content of the first and second substances,
the first end of the first resistor is connected with the input end of the voltage conversion module, and the second end of the first resistor is connected with the output end of the voltage conversion module;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is grounded.
3. The refrigerator of claim 2 wherein said second resistor is an adjustable resistor.
4. The refrigerator of claim 1, wherein the control board further comprises an anti-tamper module;
the A/D port is connected with the output end of the voltage conversion module through the anti-interference module,
the anti-interference module is used for reducing interference on the voltage signal with the preset voltage value in the transmission process.
5. The refrigerator of claim 4 wherein said immunity module comprises a third resistor and a first capacitor; wherein the content of the first and second substances,
the first end of the third resistor is connected with the output end of the voltage conversion module, and the second end of the third resistor is connected with the A/D port;
the first end of the first capacitor is grounded, and the second end of the first capacitor is connected with the second end of the third resistor.
6. A method for identifying a model of a control panel of a refrigerator, which is applied to the refrigerator according to any one of claims 1 to 5, comprising:
receiving a voltage signal with a preset voltage value output by the voltage conversion module;
performing binary conversion on the voltage signal with the preset voltage value to obtain a binary value to be identified;
and determining the control panel machine type corresponding to the binary number to be identified according to the corresponding relation between the binary number and the control panel machine type.
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| CN202010108511.0A CN111322821A (en) | 2020-02-21 | 2020-02-21 | Refrigerator and identification method of control panel machine type thereof |
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| CN202010108511.0A CN111322821A (en) | 2020-02-21 | 2020-02-21 | Refrigerator and identification method of control panel machine type thereof |
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| CN207766616U (en) * | 2017-12-04 | 2018-08-24 | 欧普照明股份有限公司 | Product category identifying system and illuminator |
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| CN1728757A (en) * | 2004-07-27 | 2006-02-01 | 兄弟工业株式会社 | Multifunction device |
| CN101520193A (en) * | 2008-02-27 | 2009-09-02 | 乐金电子(天津)电器有限公司 | Recognition device for types of microwave ovens and setting and recognition method thereof |
| KR100900418B1 (en) * | 2009-03-18 | 2009-06-01 | (주)뉴로시스 | Shared main control panel of refrigerator |
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Application publication date: 20200623 |