CN115514394A - But near field communication's intelligent household electrical appliances and communication system based on NFC - Google Patents
But near field communication's intelligent household electrical appliances and communication system based on NFC Download PDFInfo
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- CN115514394A CN115514394A CN202110633292.2A CN202110633292A CN115514394A CN 115514394 A CN115514394 A CN 115514394A CN 202110633292 A CN202110633292 A CN 202110633292A CN 115514394 A CN115514394 A CN 115514394A
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- 238000004891 communication Methods 0.000 title claims abstract description 75
- 230000006854 communication Effects 0.000 title claims abstract description 75
- 230000003993 interaction Effects 0.000 claims abstract description 17
- 238000013500 data storage Methods 0.000 claims description 29
- 238000012795 verification Methods 0.000 claims description 13
- 230000002452 interceptive effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000007175 bidirectional communication Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- H04B5/72—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
Abstract
The invention provides an intelligent household appliance capable of realizing near field communication and a communication system based on NFC, and relates to the technical field of intelligent household appliances. The intelligent household appliance capable of realizing near field communication comprises a main control chip and an NFC chip/NFC card; the main control chip is used for writing data into a memory in the NFC chip/NFC card so that the mobile terminal reads the data written by the main control chip in the memory in a near field communication mode, or reads the data written by the mobile terminal in the memory in the near field communication mode. The invention can realize the two-way communication between the household appliance end and the mobile terminal without a server end, thereby greatly saving the server space. The NFC card that can independently remove through NFC chip realizes the data interaction of household electrical appliances end and removal end, especially can realize through the NFC card that mobile device carries out the communication interaction with a plurality of different household electrical appliances simultaneously, has improved communication efficiency greatly. When the household appliance is scrapped and replaced, the new household appliance can communicate and interact with the mobile terminal through the NFC card.
Description
Technical Field
The invention relates to the technical field of intelligent household appliances, in particular to an intelligent household appliance capable of realizing near field communication and a communication system based on NFC.
Background
Near-field communication (NFC) technology can provide short-range wireless connection and realize interactive communication between electronic devices. The technology is mainly used for access cards, employee cards, student cards and the like at first and is used for identifying information such as different people, money and the like. Later, by combining the near field communication technology and the mobile communication technology, various functions such as electronic payment, identity authentication, ticketing, data exchange, anti-counterfeiting, advertisement and the like are realized, and the method is a novel service in the field of mobile communication.
With the development of intelligent home appliances, in recent years, the NFC technology is also beginning to be applied in the field of intelligent home appliances for data interaction between a mobile phone and a home appliance, and the existing interaction mode is as follows:
the household appliance end transmits the household appliance state data and the associated household appliance ID to the server end through a wireless router, an NFC card for storing the household appliance ID is arranged on the household appliance end, the household appliance ID in the NFC card is read by the mobile phone end, the household appliance state data is acquired from the server end through the household appliance ID, the instruction data is associated with the household appliance ID and transmitted to the server end, and the household appliance end acquires the instruction data corresponding to the self ID from the server end. The interaction mode is complex in process and causes waste of server resources.
Disclosure of Invention
The invention aims to provide an intelligent household appliance capable of realizing near field communication and a communication system based on NFC, which can realize the two-way communication between a household appliance end and a mobile terminal without a server end.
In order to achieve the above object, in a first aspect, the present invention provides a near field communication enabled smart appliance, including a main control chip and an NFC chip/NFC card; the main control chip is used for writing data into a memory in the NFC chip/NFC card so that the mobile terminal reads the data written by the main control chip in the memory in a near field communication mode, or reads the data written by the mobile terminal in the memory in the near field communication mode.
Preferably, the main control chip is connected with the NFC chip through a communication bus to write data into the NFC chip or read data written into the NFC chip by the mobile terminal.
Preferably, the main control chip realizes near field communication with the NFC card through the NFC reading device, and writes data into the NFC card in a near field communication manner, or reads data written into the NFC card by the mobile terminal.
Preferably, a first pin of the main control chip is connected with a second pin of the NFC chip, the NFC chip controls the second pin to output a first level signal after interaction with the mobile terminal is finished, and the main control chip accesses the NFC chip after detecting that the first pin is the first level signal.
Preferably, the first level signal is a high level signal or a low level signal.
Preferably, the communication bus is an SPI communication line, and the active chip is connected with the NFC chip through an SPI interface.
Preferably, the memory is internally provided with a household appliance end data storage area, a mobile end data storage area and a verification area;
the household appliance end data storage area is used for storing the state information of household appliances;
the mobile terminal data storage area comprises a main menu command storage area and a task data storage area, wherein the main menu command storage area is used for storing a main command issued by the mobile terminal, and the task data storage area is used for storing real-time task data issued by the mobile terminal;
the verification area is used for storing verification data for verifying the data in each storage area.
Preferably, the memory is further provided with an OTA data storage area for storing upgrade data written by the mobile terminal.
Preferably, each data storage area is provided with a flag bit and an ID recording bit, the flag bit is used for marking whether the written data is read or not, and the ID recording bit changes the ID every time the data is written, so that the main control chip of the mobile terminal or the intelligent household appliance reads the data when the flag bit indicates that the data is not read and the ID is changed.
In a second aspect, the present invention provides an NFC-based communication system including a mobile terminal and a near field communication-enabled smart appliance as described above.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention realizes the bidirectional communication between the mobile terminal and the household appliance end through NFC communication and realizes the command issuing and the state data receiving through the memory. The bidirectional communication between the household appliance end and the mobile terminal can be realized without a server, and the waste of server resources is reduced.
2. The invention writes the interactive data of the household appliance end and the mobile terminal in different areas of the memory, carries out grouping processing on the data, is convenient for reading and writing information, and greatly improves the communication efficiency.
3. The main control chip arranged at the household appliance end realizes near field communication with the NFC card through the NFC reading device, and realizes data reading/writing. The NFC card can move freely, so that near field communication between the main control chip in different household appliances and the NFC card is achieved. The information interaction between the mobile terminal and different household appliances is realized, and when the household appliance messages are changed from waste to new, the new household appliances can also communicate and interact with the mobile terminal through the NFC card.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a connection relationship diagram of a main control chip, an NFC chip, and a mobile terminal in embodiment 1 of the present invention;
FIG. 2 is a diagram showing the arrangement of areas of a memory according to embodiment 1 of the present invention;
FIG. 3 is a diagram showing the setting of flag bits flag and ID recording bits in embodiment 1 of the present invention;
fig. 4 is a schematic diagram illustrating a connection between a main control chip and an NFC chip in embodiment 1 of the present invention;
fig. 5 is an interaction flowchart of a mobile phone terminal and an intelligent home appliance terminal in embodiment 1 of the present invention;
fig. 6 is a diagram of a connection relationship between the main control chip, the NFC card, and the mobile terminal in embodiment 2 of 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention provides an intelligent household appliance capable of realizing near field communication, which can realize bidirectional communication between a household appliance end and a mobile terminal. The near field communication enabled smart appliance provided by the embodiment of the present invention will be described in detail below with reference to specific embodiments.
Example 1
The intelligent household appliance capable of near field communication in the embodiment comprises a main control chip 001 (micro control unit MCU) and an NFC interactive device, wherein the main control chip 001 is used for writing data into a memory in the NFC interactive device so that the mobile terminal 002 reads the data written by the main control chip 001 in the memory in a near field communication manner, or reads the data written by the mobile terminal 002 in the memory in a near field communication manner.
In this embodiment, the NFC interaction device is an NFC chip 003, see fig. 1, and the main control chip 001 is connected to the NFC chip 003 through a communication bus, so as to write data into the NFC chip 003 or read data written into the NFC chip 003 by the mobile terminal 002. The communication bus is an SPI communication line. NFC chip 003 is connected NFC coil 004 through the wire, and NFC coil 004 sets up on the household electrical appliances shell, preferably sets up the shell internal surface. When the mobile terminal 002 approaches the NFC coil 004, data is written into the NFC chip 003, or data written into the NFC chip 003 at the end of the home appliance is read. The main control module of the mobile terminal 002 is also sequentially connected with an NFC chip and an NFC coil.
In this embodiment, the memory is an EEPROM integrated in the NFC chip 003, the EEPROM stores information of the NFC interaction device, and most of space is reserved for storing user information, and the memory generally has multiple versions, such as 1K Byte, 2K Byte, and the like. The communication between the household appliance and the mobile terminal can be realized by utilizing the internal EEPROM. And the one-to-one response of the communication instruction is realized through a circulating back-and-forth storage mechanism of the EEPROM. This logic requires the EEPROM to be divided into several areas for information storage, as shown in fig. 2, the EEPROM is provided with a home appliance side data storage area, a mobile side data storage area, a check area, an OTA data storage area, and a mobile device identification area.
Wherein:
and the household appliance end data storage area is used for storing the state information of the household appliance.
The mobile terminal data storage area comprises a main menu command storage area and a task data storage area, wherein the main menu command storage area is used for storing main commands such as power on/off and the like issued by the mobile terminal, and the task data storage area is used for storing real-time task data such as menu data issued by the mobile terminal.
The OTA data storage area is used for storing the upgrade data written by the mobile terminal; and the main control chip reads the upgrading data and then upgrades the main control chip.
And the verification area is used for storing verification data for verifying the data of each storage area. The writer modifies the data and the reader verifies the data. When the reader reads the data, the corresponding check value is compared with the check value of the check area, only two check values are the same and indicate that the data is checked correctly, and otherwise, the data is checked incorrectly and is discarded.
And the mobile equipment identification area is used for identifying the mobile equipment when the mobile equipment approaches, and popping up a control bullet frame on an interface of the mobile equipment after the identification is passed, wherein the control bullet frame is used for displaying data information read/written by the mobile equipment.
As described above, the interactive data is written in different areas, which is convenient for reading/writing information, and different data packet processing can greatly improve the communication efficiency, and simultaneously, the data processing becomes simpler.
In this embodiment, the states of the first bytes in the above regions are labeled for determining the real-time performance of the data, so as to achieve non-repeated reading and writing of the data. Referring to fig. 3, a flag bit flag for marking whether the written data has been read, which is 0 when the data is written, and/or an ID recording bit, which is 1 when the data has been read, are set in each data storage area. The ID recording bit changes the ID every time data is written, a mode of adding 1 every time can be adopted, the mode is changed into an unsigned byte, and after 8 bits exceed 255, sequential circulation is carried out from 0 again. Either one or both of the flag bit flag and the ID recording bit may be set. The main control chip of the mobile terminal or the intelligent household appliance reads data when the flag bit indicates 0 or the ID is changed, so that the timeliness of data communication is ensured.
In this embodiment, the verification area is set independently, rather than adding verification data to each area, which can improve the reading efficiency. During verification, the verification area needs to be modified when the data of each storage area changes, that is, two parts of data (the modified storage area and the verification area) need to be modified each time an instruction is sent.
In this embodiment, the situation that the main control chip 001 and the mobile terminal 002 access the NFC chip 003 at the same time can be avoided in the following two ways.
The first method is as follows: the main control chip 001 is set to access the NFC chip 003 at regular time to read/write data, but this method is likely to waste resources and affect communication efficiency.
The second method comprises the following steps: referring to fig. 4, a first pin of the main control chip 001 is connected to a second pin of the NFC chip 003, the NFC chip 003 controls the second pin to output a first level signal after interaction with the mobile terminal 002 is finished, and the main control chip 001 accesses the NFC chip 003 after detecting that the first pin is the first level signal. The first level signal is a high level signal or a low level signal. The master control chip 001 is informed in a level mode, so that the master control chip 001 judges whether a mobile phone is available at present according to a level signal, once the mobile phone is operated, the master control chip 001 waits for 500ms after the signal disappears to read and write data, the timeliness of data reading can be guaranteed, and the number of times of reading the data can be reduced.
In this embodiment, according to the specification that the mobile terminal 002 reads NFC, a field is written in the format of ndef at the foremost address of the EEPROM of the NFC chip 003, and then the command to be transmitted and the device status to be transmitted are wrapped in the field in the format of ndef, so that the function that the mobile terminal 002 approaches the NFC tag 004 to pop up a dialog (operation interface) and control is realized.
Referring to fig. 5, taking a mobile terminal as a mobile phone as an example, the mobile phone reads information written into the NFC chip by the main control chip of the smart appliance by approaching the NFC coil located on the housing of the smart appliance, and writes control data into the NFC chip at the same time, so that an interaction flow for the main control chip to read is as follows:
1. when the mobile phone end approaches the NFC coil on the shell of the intelligent household appliance, the NFC chip can give a busy signal or a not busy signal, the busy signal represents that the main control chip is accessing the NFC chip at the moment and needs to wait for the not busy signal, and the mobile phone end can leave or continue to wait at the position at the moment;
2. when the NFC chip sends a 'not busy' signal, the mobile phone end reads data in the data storage area of the household appliance end, and meanwhile, a reading and writing flag bit flag is updated to indicate that the data is read;
3. the mobile phone end writes command data into a main menu command storage area, writes task data (cooking recipes) into the task data storage area, and updates data in the verification area;
4. the method comprises the steps that a household appliance end MCU judges whether a mobile phone end accesses an NFC chip or not through a first level signal output by a second pin of the NFC chip, when the first level signal is a high level signal, a signal representing 'busy' of the NFC chip indicates that the mobile phone end accesses the NFC chip, and a signal of a low level signal ('not busy') needs to be waited;
5. a first level signal output by a second pin of the NFC chip is a low level signal and indicates that the NFC chip is not busy;
6. the MCU reads the data in the main menu command storage area and the task data storage area, and updates a reading and writing flag bit flag to indicate that the data are read;
7. and the MCU writes the state data into the data storage area of the household appliance end and updates the data in the verification area at the same time.
Example 2
The intelligent household appliance capable of near field communication in the embodiment comprises a main control chip 001 and an NFC interactive device, wherein the main control chip 001 is used for writing data into a memory in the NFC interactive device so that the mobile terminal 002 reads the data written by the main control chip 001 in the memory in a near field communication mode, or reads the data written by the mobile terminal 002 in the memory in a near field communication mode.
Referring to fig. 6, in this embodiment, the NFC interaction device is an NFC card 005 that can move independently, the main control chip 001 implements near field communication with the NFC card 005 through an NFC reading device, and writes data into the NFC card 005 in a near field communication manner, or reads data written into the NFC card 005 by the mobile terminal 002. The NFC card 005 moves freely, so that the main control chip 001 and the NFC card 005 in different home appliances (first home appliance, second home appliance, and third home appliance) realize near field communication to acquire interactive data of the different home appliances. And the mobile terminal 002 can perform information interaction with different household appliances.
The NFC reading device may be an NFC chip 006 connected to the main control chip 001, the NFC chip 006 is connected to an NFC coil 007 disposed on the surface of the household appliance, and when the NFC card 005 is close to the NFC coil 007, the main control chip 001 writes data into the NFC card 005 or reads data written into the NFC card 005 by the mobile terminal 002. When the main control chip 001 writes data into the NFC card 005, the data may be stored in the NFC chip 006 in advance, or may be directly written, and the NFC chip 006 is equivalent to a transmission medium.
In this embodiment, divide into a plurality of districts with the NFC card, every district corresponds a household electrical appliances, sets up solitary NFC chip and NFC coil in every district, and the integration has the memory in every NFC chip, so, can realize that mobile terminal carries out the communication interaction with a plurality of different household electrical appliances simultaneously, has improved communication efficiency greatly. In addition, when the home appliance reports are replaced with new home appliances, the new home appliances can also perform communication interaction with the mobile terminal through the NFC card. The memory of this embodiment is an EEPROM, and the specific configuration thereof is the same as that of embodiment 1, and will not be described herein again.
Example 3
Based on the same technical concept as that in embodiment 1 and embodiment 2, an embodiment of the present invention further provides an NFC-based communication system, including a mobile terminal and the intelligent home appliance capable of near field communication as described in embodiment 1 or embodiment 2.
Claims (10)
1. An intelligent household appliance capable of near field communication is characterized by comprising a main control chip and an NFC chip/NFC card;
the main control chip is used for writing data into a memory in the NFC chip/NFC card so that the mobile terminal reads the data written by the main control chip in the memory in a near field communication mode, or reads the data written by the mobile terminal in the memory in the near field communication mode.
2. The intelligent household appliance capable of realizing near field communication according to claim 1, wherein the main control chip is connected with the NFC chip through a communication bus so as to write data into the NFC chip or read data written into the NFC chip by the mobile terminal.
3. The intelligent household appliance capable of near field communication according to claim 1, wherein the main control chip implements near field communication with the NFC card through the NFC reading device, and writes data into the NFC card in a near field communication manner, or reads data written into the NFC card by the mobile terminal.
4. The intelligent household appliance capable of realizing near field communication according to claim 2, wherein a first pin of the main control chip is connected with a second pin of the NFC chip, the NFC chip controls the second pin to output a first level signal after interaction with the mobile terminal is finished, and the main control chip accesses the NFC chip after detecting that the first pin is the first level signal.
5. The intelligent household appliance capable of near field communication according to claim 4, wherein the first level signal is a high level signal or a low level signal.
6. The intelligent household appliance capable of realizing near field communication according to claim 2, wherein the communication bus is an SPI communication line, and the active chip is connected with the NFC chip through an SPI interface.
7. The intelligent household appliance capable of realizing near field communication according to claim 1, wherein a household appliance end data storage area, a mobile end data storage area and a verification area are arranged in the memory;
the household appliance end data storage area is used for storing the state information of household appliances;
the mobile terminal data storage area comprises a main menu command storage area and a task data storage area, wherein the main menu command storage area is used for storing a main command issued by the mobile terminal, and the task data storage area is used for storing real-time task data issued by the mobile terminal;
the check area is used for storing check data for checking the data of each storage area.
8. The intelligent household appliance capable of realizing near field communication according to claim 7, wherein the memory is further provided with an OTA data storage area for storing upgrade data written by the mobile terminal.
9. The intelligent household appliance capable of near field communication according to claim 7 or 8, wherein each data storage area is provided with a flag bit and/or an ID recording bit, the flag bit is used for marking whether the written data has been read, the ID recording bit changes the ID every time the data is written, so that the main control chip of the mobile terminal or the intelligent household appliance reads the data when the flag bit indicates that the data has not been read or the ID has been changed.
10. A NFC-based communication system comprising a mobile terminal and a near field communication enabled appliance as claimed in any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110633292.2A CN115514394A (en) | 2021-06-07 | 2021-06-07 | But near field communication's intelligent household electrical appliances and communication system based on NFC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110633292.2A CN115514394A (en) | 2021-06-07 | 2021-06-07 | But near field communication's intelligent household electrical appliances and communication system based on NFC |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594731A (en) * | 2018-07-12 | 2018-09-28 | 上海上晟电子科技有限公司 | A kind of intelligent electric appliance control method based on NFC |
| CN108806227A (en) * | 2018-09-03 | 2018-11-13 | 武汉盛帆电子股份有限公司 | A kind of NB-IOT water meters and processing method |
| CN112232454A (en) * | 2019-07-15 | 2021-01-15 | 广东美的制冷设备有限公司 | Data writing method and system, terminal, household appliance and computer device |
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2021
- 2021-06-07 CN CN202110633292.2A patent/CN115514394A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594731A (en) * | 2018-07-12 | 2018-09-28 | 上海上晟电子科技有限公司 | A kind of intelligent electric appliance control method based on NFC |
| CN108806227A (en) * | 2018-09-03 | 2018-11-13 | 武汉盛帆电子股份有限公司 | A kind of NB-IOT water meters and processing method |
| CN112232454A (en) * | 2019-07-15 | 2021-01-15 | 广东美的制冷设备有限公司 | Data writing method and system, terminal, household appliance and computer device |
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