CN113093560A - Man-machine interaction method and device for household appliance - Google Patents
Man-machine interaction method and device for household appliance Download PDFInfo
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- CN113093560A CN113093560A CN202110203728.4A CN202110203728A CN113093560A CN 113093560 A CN113093560 A CN 113093560A CN 202110203728 A CN202110203728 A CN 202110203728A CN 113093560 A CN113093560 A CN 113093560A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2642—Domotique, domestic, home control, automation, smart house
Abstract
The application discloses a man-machine interaction method and device for household appliances. The household appliance can be additionally provided with a functional module, the household appliance comprises a main control module, the main control module comprises a main controller and a human-computer interaction device, and the functional module comprises a slave controller; the master controller and the slave controller are both connected to the communication bus; the man-machine interaction method comprises the following steps: the master controller communicates with the slave controller through a communication bus to acquire the human-computer interaction interface information of the functional module; the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information. The method and the device can improve the expansibility and flexibility of the household appliance, so that a user can independently select a proper function module to install the function module based on the self condition.
Description
Technical Field
The application relates to the technical field of equipment operation, in particular to a man-machine interaction method and device for household appliances.
Background
At present, human-computer interaction of household appliances is carried out through a human-computer interaction device. For example, suppose the human-computer interaction device includes a display screen and a key, the user presses the key, the display screen displays a corresponding function identifier, and when the function and the prompt information required by the user are switched, the user presses a confirmation key to start the corresponding function module, the household appliance starts to work, and information such as a work prompt is displayed on the display screen.
In the man-machine interaction mode, the current universal mode requires that the main controller of the household appliance integrates the control programs of all the functional modules in advance, and comprises the communication commands and protocols of all the functional module controllers, and the contents to be displayed by the man-machine interaction device when each functional module is started.
The method generally adopted by the prior art cannot adapt to the diversified requirements of the change of the internal functional modules of the household appliances.
(1) Aiming at the combination of different functional modules of the same series of products, the situation that the low-matched machine type optional functional module does not exist exists, and the main controller needs to realize the control programs of all the functional modules, so that the resource waste of the main control module is caused, and the cost of the main controller is increased.
(2) In addition, in another situation, the combination of different types of function modules is increasing, and when a new function module appears, the program of the main controller must be updated, which continuously puts higher demands on the program storage resource of the main controller and increases the overall cost of the production of serial product models.
(3) For the sold household electrical appliance products, due to the limitation of the main controller resources, when a user installs a new functional module as required, the user is limited by the main controller resources, and can not use more updated functional modules or can not use the main controller to upgrade programs and other methods.
Disclosure of Invention
The application provides a man-machine interaction method and device for a household appliance, and solves the technical problem that a functional module is inconvenient to install in the conventional household appliance.
In order to solve the problems, the application provides a human-computer interaction method of a household appliance, wherein the household appliance can be additionally provided with a functional module, the household appliance comprises a main control module, the main control module comprises a main controller and a human-computer interaction device, and the functional module comprises a slave controller; the master controller and the slave controller are both connected to the communication bus; the man-machine interaction method comprises the following steps:
the master controller communicates with the slave controller through a communication bus to acquire the human-computer interaction interface information of the functional module;
the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information.
Wherein, the method also comprises:
the function module responds to an operation instruction issued by the main controller or the human-computer interaction device, operates, and transmits the working state information of the function module to the human-computer interaction device so as to display the working state of the function module in real time on the human-computer interaction device.
Wherein, the function module responds to the operation instruction given by the main controller or the human-computer interaction device, and the function module operates and comprises the following parts before:
and responding to the instruction of checking the functional modules acquired by the human-computer interaction device, and sequentially polling at least two functional modules by the main controller to acquire the human-computer interaction interface information of each functional module one by one so as to control the human-computer interaction device to sequentially display the human-computer interaction interface of each functional module.
Wherein, at least two functional modules are connected with the main control module through a communication bus, and the method also comprises the following steps:
in the process of polling at least two functional modules, the main controller sends a query instruction to all the functional modules through the communication bus;
responding to the inquiry instruction, the functional module generates random time, and keeps monitoring the communication bus in the random time;
if no other functional module sends a response data frame within random time, the functional module sends the response data frame through the communication bus encryption, wherein the response data frame comprises parity check bits;
the main controller carries out parity check on the response data frame;
and if the parity check is passed, sending an acknowledgement frame to the functional module.
Wherein, master controller and follow controller pass through communication bus and communicate, include:
the master and slave controllers communicate in encrypted form.
Wherein, the master control module communicates with the slave controller in an encryption mode, and the communication method comprises the following steps:
the method comprises the steps that a data sending party in a main control module and all functional modules calculates an information original text by using an abstract algorithm to obtain a first abstract value;
the data sender signs the first digest value by using a private key of the data sender to generate a signature value;
the data sender combines and encrypts the signature value and the information text to obtain encrypted data;
the data sender sends the encrypted data to the main control module and the data receivers in all the functional modules;
the data receiver decrypts the encrypted data to obtain an information original text and a signature value;
the data receiving party calculates the information text by using an abstract algorithm to obtain a second abstract value;
the data receiver checks the signature value by using the public key of the data sender to obtain a first abstract value;
and if the first abstract value is consistent with the second abstract value, the data receiving party processes the information original text.
Wherein, the master control module communicates with the slave controller in an encryption mode, and the master control module comprises the following components:
the main control module and each function module negotiate to determine safety parameter information;
the main control module and each function module calculate the safety parameter information by using the same key negotiation algorithm to obtain and store the symmetric key of each function module.
Wherein, all store own equipment certificate in host system and the functional module, at least one functional module passes through communication bus and host system and certificate and key distribution device link to each other, communicates with encryption form between host system and the functional module, includes before:
the main control module and all the functional modules send own device certificates to the certificate and key distribution device through the communication bus, so that the certificate and key distribution device performs validity verification on the device certificates of each module.
To solve the above problems, the present application provides a home appliance including a processor; the processor is used for executing instructions to realize the method.
To solve the above problems, the present application provides a computer-readable storage medium having stored therein a program file capable of implementing the above method.
In order to solve the above problem, the present application provides a household appliance, which includes a main control module and at least one control module:
the main control module comprises a main controller and a man-machine interaction device, and the main controller is connected with the communication bus;
each function module comprises a slave controller and is stored with self human-computer interaction interface information, the slave controller is connected to the communication bus, so that the function modules send the self human-computer interaction interface information to the master controller through the communication bus, and the master controller controls the human-computer interaction device to display the human-computer interaction interface of the function module according to the human-computer interaction interface information.
The main control module and all the functional modules are integrated with security chips, and each module encrypts and decrypts data through the security chip of the module so as to carry out encryption communication with other modules.
Wherein, the household appliance also comprises a protocol conversion module which is arranged between the communication bus and the unmatched module,
the unmatched module is a module unmatched with the communication protocol of the communication bus.
The functional module additionally arranged on the household appliance is provided with the slave controllers, and the control programs of the functional modules can be integrated in the slave controllers of the functional modules without integrating the control programs of all the functional modules by the master controller; the functional module stores self human-computer interaction interface information, and the functional module can also send the self human-computer interaction interface information to the main controller through the communication bus to be displayed on the human-computer interaction device, so that the main controller is not required to contain the human-computer interaction interface information of all the functional modules; and the master controller and the slave controllers of the functional modules are connected to the communication bus, so that the master controller can communicate with all the functional modules through the communication bus without a communication protocol of the slave controllers of all the functional modules, a user can independently select a proper functional module to install the functional module based on the self condition, and the expansibility and flexibility of the household appliance are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of a household appliance of the present application;
FIG. 2 is a schematic flow chart diagram illustrating an embodiment of a human-computer interaction method for a home appliance according to the present application;
fig. 3 is a schematic diagram of the connection between the home device and the certificate and key distribution apparatus according to the present application;
FIG. 4 is a schematic structural diagram of an embodiment of an electronic device of the present application;
FIG. 5 is a schematic structural diagram of an embodiment of a computer-readable storage medium according to the present application.
Detailed Description
The description and drawings illustrate the principles of the application. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the application and are included within its scope. Moreover, all examples described herein are principally intended expressly to be only for pedagogical purposes to aid the reader in understanding the principles of the application and the concepts provided by the inventors and thereby deepening the art, and are to be construed as being limited to such specifically recited examples and conditions. Additionally, the term "or" as used herein refers to a non-exclusive "or" (i.e., "and/or") unless otherwise indicated (e.g., "or otherwise" or in the alternative). Moreover, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments may be combined with one or more other embodiments to form new embodiments.
In the man-machine interaction mode, the current universal mode requires that the main controller of the household appliance integrates the control programs of all the functional modules in advance, and comprises the communication commands and protocols of all the functional module controllers, and the contents to be displayed by the man-machine interaction device when each functional module is started.
The method generally adopted by the prior art cannot adapt to the diversified requirements of the change of the internal functional modules of the household appliances.
Based on this, this application sets up domestic appliance to bus formula master-slave mode framework, and domestic appliance's main control unit need not to integrate the control program and the display content that have functional module like this, also need not to contain the communication command and the agreement of all functional module controllers, need not to consider main control unit's resource when installing functional module additional promptly for the user can select to install functional module additional by oneself based on self demand, strengthens domestic appliance's scalability and flexibility.
Specifically, as shown in fig. 1, the home appliance 10 includes a main control module 11 and at least one function module 12. The main control module 11 includes a main controller 111 and a human-computer interaction device 112. The main controller 111 is connected to the communication bus 13.
Each of the functional modules 12 includes a slave controller 121 and stores information of its own human-computer interaction interface, and the slave controller 121 is connected to the communication bus 13, so that the functional modules 12 transmit the information of their own human-computer interaction interface to the master controller 111 through the communication bus 13, and the master controller 111 controls the human-computer interaction device 112 to display the human-computer interaction interface of the functional module 12 according to the information of the human-computer interaction interface. The function module 12 has the slave controller 121, and the control program of the function module 12 can be integrated in the slave controller 121 of the function module 12 itself without integrating the control programs of all the function modules 12 by the master controller 111; the functional module 12 stores the information of the human-computer interaction interface thereof, and the functional module 12 can also send the information of the human-computer interaction interface thereof to the main controller 111 through the communication bus 13 to be displayed on the human-computer interaction device 112, so that the main controller 111 is not required to contain the information of the human-computer interaction interfaces of all the functional modules 12; in addition, the master controller 111 and the slave controllers 121 of the functional modules 12 are connected to the communication bus 13, so that the master controller 111 can communicate with all the functional modules 12 through the communication bus 13, and the master controller 111 does not need to include the communication protocols of the slave controllers 121 of all the functional modules 12, so that a user can independently select and install the proper functional modules 12 based on the self condition, and the expansibility and flexibility of the household appliance 10 are improved.
When the household appliance 10 of the present application is in operation, the main control module 11 usually occupies the communication bus 13, and the function module 12 queries the communication bus 13 in a monitoring mode. After the functional module 12 receives and analyzes the information identifier sent by the main control module 11 to the functional module 12, the functional module 12 occupies the communication bus 13 when the communication bus 13 is idle, and replies information to the main control module 11, so that bidirectional communication between the main control module 11 and the functional module 12 is established; after the communication is finished, the functional module 12 releases the control right of the communication bus 13, returns to the communication bus 13 monitoring mode, and the control right of the communication bus 13 is recovered by the main control module 11.
Optionally, the main controller 111 and all the functional modules 12 may further have a security chip 103 integrated therein, so that each module encrypts and decrypts data through its own security chip 103, so that each module performs encrypted communication with other modules. The main control module 11 and the function module 12 can be referred to as modules.
Optionally, the household appliance 10 may further include a protocol conversion module, which may be disposed between the communication bus 13 and a mismatch module, wherein the mismatch module is a module that does not match with the communication protocol of the communication bus 13. For example, it is assumed that the communication protocol of the communication bus 13 is an SPI protocol, and a module having a communication protocol of 232 protocol or a serial port protocol is a mismatch module.
The human-computer interaction device 112 includes a display, a key, a voice module, and/or an image sensor.
A flow diagram of an embodiment of a human-computer interaction method for a home appliance with the above architecture may be specifically shown in fig. 2, and may include the following steps. It should be noted that the following numbers are only used for simplifying the description, and are not intended to limit the execution order of the steps, and the execution order of the steps in the present embodiment may be arbitrarily changed without departing from the technical idea of the present application.
S101: the master controller and the slave controller communicate through a communication bus to acquire the human-computer interaction interface information of the functional module.
S102: the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information.
In the application process of the household appliance, the command for displaying the interface of the functional module issued by the user can be acquired by the human-computer interaction device in response to the human-computer interaction device, the main controller can communicate with the slave controller through the communication bus to acquire the human-computer interaction interface information of the functional module, so that the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information, the human-computer interaction of the functional module in the household appliance is completed, and the human-computer interaction device can independently display the function of each functional module.
Optionally, the human-computer interaction device can forward the display instruction or the operation control instruction to the main controller; the main controller responds to a display instruction or an operation control instruction and communicates with the sub-controller of the corresponding functional module to obtain the man-machine interaction interface information of the corresponding functional module; and then the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information. In other embodiments, the human-computer interaction device has a function of processing instructions, and at the moment, the human-computer interaction device can communicate with the slave controller of the functional module through the communication bus to obtain human-computer interaction interface information of the functional module; the human-computer interaction device can display the human-computer interaction interface of the functional module based on the human-computer interaction interface information.
In one implementation, a human-computer interaction device in the household appliance can receive an instruction issued by a user to display or start a human-computer interaction interface of a functional module. For example, the functional module in the household appliance comprises a heating module, the human-computer interaction device comprises a voice module, and in response to the voice module recognizing that a user has reached an instruction for starting the heating module, the voice module or the master controller communicates with the slave controller in the heating module to obtain the human-computer interaction interface information of the heating module, so that the human-computer interaction device can display the human-computer interaction interface of the heating module.
When a main controller or a human-computer interaction device (namely a main control module) sends information to a certain functional module, a communication request frame with the functional module identifier is sent to a communication bus, and after the functional module receives and analyzes the information identifier sent to the functional module, the functional module occupies the communication bus in the idle time of the communication bus and replies information to the main control module, so that bidirectional communication between the main control module and the functional module is suggested; after the communication is finished, the functional module releases the control right of the communication bus, returns to the communication bus monitoring mode, and the control right of the communication bus is withdrawn by the main control module.
In another implementation manner, the human-computer interaction device in the household appliance can receive an instruction issued by a user to sequentially display human-computer interaction interfaces of all functional modules in the household appliance. For example, the man-machine interaction device comprises a key, the key is used for responding to the fact that a user touches and presses the key representing 'all functional module contents of the household appliance are displayed in sequence', the man-machine interaction device sends a polling instruction to the main controller, the main controller responds to the polling instruction, the polling module is adopted to communicate with the slave controllers of the functional modules one by one through the communication bus, the man-machine interaction interface information of the main controller is read one by one, and then the man-machine interaction device is controlled to display the man-machine interaction interfaces of the functional modules in sequence.
In the process of polling at least two functional modules by the main controller, the household appliance can adopt an anti-collision mechanism to prevent the multiple functional modules from replying at the same time, so that the data collision of the communication bus is avoided.
For example, a collision avoidance mechanism combining a random number mechanism and a parity check may be used to poll at least two functional modules, although not limited thereto.
Specifically, (1) the main controller sends a query instruction of the functional module and releases the communication bus;
(2) after receiving the instruction, each functional module replies to the main controller in a response data frame mode and sends a response data frame with own unique identification information to the main controller;
a. responding to the inquiry instruction, the functional module generates a random time R milliseconds, and calculates the delay through the timer, and after the random time R milliseconds, the functional module sends a response data frame, wherein R can be between 1 and 200ms, but is not limited thereto;
b. the functional module keeps the monitoring state of the communication bus within the random time R milliseconds of the functional module, if other functional modules send response data frames within 1-R milliseconds, the communication bus inquiry is not answered, and the next main controller inquiry is waited;
(3) after the main controller successfully receives the response data frame, sending a confirmation frame to the functional module which sends the response data frame, wherein the functional module which sends the response data frame does not respond to the subsequent inquiry; until the main controller receives the response data frames of all the functional modules, the query is finished;
(4) the response data frame sent by the functional module comprises parity check bits; correspondingly, after receiving the response data frame, the main controller performs parity check on the response data frame; if the received response data frame is wrong in parity check, the communication bus collision is considered to occur, the inquiry is sent again, and each functional module which does not receive the confirmation frame recalculates the random time R to wait for the inquiry; if the received response data frame is successfully parity checked, the main controller will send an acknowledgement frame to the functional module.
In another implementation, based on the human-computer interaction device receiving a control instruction issued by a user to operate a functional module in the household appliance, the human-computer interaction device can directly send the operation control instruction to a slave controller of the functional module through a communication bus, or the human-computer interaction device can send the operation control instruction to the slave controller of the functional module through the master controller and the communication bus; and the slave controller operates and outputs the human-computer interaction interface information to the human-computer interaction device based on the operation control instruction so as to display the information on the human-computer interaction device.
And in the running process of the slave controller, the slave controller sends the working state information of the slave controller to the human-computer interaction device so that the human-computer interaction device displays the working state of the functional module in real time, namely the controller of the human-computer interaction device is transferred to the running functional module by the master controller.
After the functional module finishes working, the functional module can send a working completion instruction to the main controller, and the control right of the human-computer interaction device is handed back to the main controller, namely the main controller can control the human-computer interaction device to display a human-computer interaction interface of the human-computer interaction device when the main controller obtains the working completion instruction of the functional module.
In addition, the main control module and the functional module can communicate in an encrypted form. For example, the main control module and the function module may communicate in an encryption manner, such as a symmetric encryption manner or an asymmetric encryption manner.
Certainly, the data sender in the main control module and the functional module calculates the information text by using an abstract algorithm to obtain a first abstract value;
the data sender signs the first digest value by using a private key of the data sender to generate a signature value;
the data sender combines the signature value and the information text and symmetrically encrypts the combination to obtain encrypted data;
the data sender sends the encrypted data to the main control module and the data receivers in all the functional modules;
the data receiver symmetrically decrypts the encrypted data to obtain an information original text and a signature value;
the data receiving party calculates the information text by using an abstract algorithm to obtain a second abstract value;
the data receiver checks the signature value by using the public key of the data sender to obtain a first abstract value;
if the first abstract value is consistent with the second abstract value, the received information is complete, so that data is prevented from being illegally tampered, and a data receiver can process the information original text. The data sender can be a main control module, and the data receiver can be any functional module; or the data sender can be a functional module, and the data receiver can be another functional module; or the data sending party is a functional module and the data receiving party is a main control module.
The combination of the signature value and the information text is not limited herein, and for example, the data sender may attach the signature value to the information text or place the signature value in front of the information text.
In addition, in order to ensure that the communication between the main control module and the functional module, and between any two functional modules, is normal, it is necessary to ensure that the symmetric keys used by the data sending party for encryption and the symmetric keys used by the data receiving party for decryption are the same.
In an implementation manner, the main control module may determine each functional module and its own symmetric key, and issue the key by the main control module, so that each functional module has the symmetric key of the module that can communicate with the functional module and its own symmetric key, and the main control module also has its own symmetric key and the symmetric keys of all functional modules.
In another implementation manner, the external devices such as the certificate and key distribution device may confirm the symmetric keys of the main control module and all the functional modules, and the certificate and key distribution device issues the keys, so that each functional module has the symmetric key of the module that can communicate with the functional module and its symmetric key, and the main control module also has its symmetric key and the symmetric keys of all the functional modules.
Optionally, in the process of issuing the key in the two implementation manners, the key issuing party (external device or main control module such as the certificate and key issuing device) may encrypt the symmetric key to be issued by using the public key of the key receiving party (one of the main control module and all functional modules); the key receiver decrypts the obtained encrypted symmetric key by using the private key of the key receiver to obtain the symmetric key of the key receiver and/or the symmetric key of the module which can communicate with the key receiver.
In another implementation manner, a symmetric key of each functional module may be determined by key agreement between the main control module and each functional module, so as to ensure communication security between the modules.
Specifically, the key agreement between the main control module and each function module is performed in the following manner: after the main control module of the household appliance exchanges key negotiation request information with each function module, the main control module and the function modules acquire security parameter information for performing key negotiation calculation; the main control module and each function module respectively calculate the security parameter information through the same key negotiation algorithm to obtain and store the symmetric key of the function module.
The master control module and each functional module are provided with a security chip, the security chip of each module can be used for storing the own symmetric key of the module and the symmetric key of the module which can communicate with the module, and can also be used for storing the own public and private key pair and the public key of the module which can communicate with the public and private key pair.
In the embodiment, the functional module additionally arranged on the household appliance is provided with the slave controller, and the control program of the functional module can be integrated in the slave controller of the functional module, so that the master controller is not required to integrate the control programs of all the functional modules; the functional module stores self human-computer interaction interface information, and the functional module can also send the self human-computer interaction interface information to the main controller through the communication bus to be displayed on the human-computer interaction device, so that the main controller is not required to contain the human-computer interaction interface information of all the functional modules; and the master controller and the slave controllers of the functional modules are connected to the communication bus, so that the master controller can communicate with all the functional modules through the communication bus without a communication protocol of the slave controllers of all the functional modules, a user can independently select a proper functional module to install the functional module based on the self condition, and the expansibility and flexibility of the household appliance are improved.
Optionally, before the household appliance performs human-computer interaction by using the above embodiment, the main control module and the at least one functional module need to be assembled into the household appliance, so that the functional module with the slave controller is integrated into the household appliance. Of course, the functional module with the slave controller can also be added to a household appliance which is not provided with a functional module or has a functional module.
After the hardware is assembled or added, the household appliance can establish a secure encrypted communication system. Specifically, each module may have its own symmetric key and the symmetric key of the module that can communicate with it by means of encrypted distribution or key agreement.
In addition, in order to discriminate legal use and prevent unauthorized function module use, after hardware is assembled or added, the legality of the main control module and the function module can be verified, and after the legality verification is passed, a safety encryption communication system is established to complete the assembly or addition of the household appliance.
Specifically, as shown in fig. 3, the master control module and the function module each store their own device certificate, and after hardware is assembled or installed, the certificate and key distribution apparatus may be connected to a communication bus of the home appliance, so that the master control module and the function module are in communication connection with the certificate and key distribution apparatus through the communication bus, and the master control module and all the function modules send their own device certificates to the certificate and key distribution apparatus through the communication bus, so that the certificate and key distribution apparatus performs validity verification on the device certificate of each module; the illegal module cannot pass the validity verification, cannot be assembled and needs to be dismantled; legitimate modules can be assembled and retrofitted.
Optionally, when verifying the validity of the device certificate, the certificate and key distribution apparatus communicatively connected to the main control module and the function module through the communication bus may further be connected to the certificate and key management platform, and specifically, the certificate and key distribution apparatus may send the device certificates of the main control module and all the function modules to the certificate and key management platform, so that the certificate and key management platform verifies the validity of each module.
Similarly, when the key is issued, the certificate and key distribution device which is in communication connection with the main control module and the functional module through the communication bus can be also connected with the certificate and key management platform, the certificate and key management platform can generate the symmetric key of each module, and the certificate and key management platform sends the symmetric key of each module to the corresponding module through the certificate and key distribution device.
In addition, the device certificates of the main control module and the function module are stored in the security chip of each module. The device certificate is used as a unique identifier of the legality of the main control module and each functional module, and can be issued by a certificate and key management platform in the production and manufacturing process. When the certificate and key management platform issues the equipment certificate for each module, the equipment certificate and the key management platform can be distributed in an encryption mode, specifically, the certificate and key management platform encrypts and issues the equipment certificate of each module by using a public key of the corresponding module, and each module receives the equipment certificate and decrypts the equipment certificate by using a private key of the module; and the public and private key pairs of the modules are stored in the security chip.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of an electronic device 20 according to the present application. The electronic device 20 of the present application includes a processor 22, and the processor 22 is configured to execute instructions to implement the method provided by any embodiment and any non-conflicting combination of the above-mentioned human-computer interaction method and the user behavior diy analysis method for implementing the home appliance.
The electronic device 20 may be a terminal such as a mobile phone or a notebook computer, or may also be a server, or may also be an internet of things device that constructs a local area network with a foot wearable device such as a refrigerator or an air conditioner.
The processor 22 may also be referred to as a CPU (Central Processing Unit). The processor 22 may be an integrated circuit chip having signal processing capabilities. The processor 22 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor 22 may be any conventional processor or the like.
The electronic device 20 may further include a memory 21 for storing instructions and data required for operation of the processor 22.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present disclosure. The computer readable storage medium 30 of the embodiments of the present application stores instructions/program data 31 that when executed enable the methods provided by any of the above embodiments of the methods of the present application, as well as any non-conflicting combinations. The instructions/program data 31 may form a program file and be stored in the storage medium 30 in the form of a software product, so that a computer device (which may be a personal computer, a cloud server, or a network device) or a processor (processor) executes all or part of the steps of the methods according to the embodiments of the present application. And the aforementioned storage medium 30 includes: various media capable of storing program codes, such as a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or devices such as a computer, a cloud server, a mobile phone, and a tablet.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (13)
1. The human-computer interaction method of the household appliance is characterized in that the household appliance can be additionally provided with a functional module, the household appliance comprises a main control module, the main control module comprises a main controller and a human-computer interaction device, and the functional module comprises a slave controller; the master controller and the slave controllers are connected to a communication bus; the man-machine interaction method comprises the following steps:
the master controller and the slave controller communicate through the communication bus to acquire the human-computer interaction interface information of the functional module;
and the main controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information.
2. The method of claim 1, further comprising:
the function module responds to an operation instruction issued by the main controller or the human-computer interaction device, the function module operates and transmits the working state information of the function module to the human-computer interaction device, and the human-computer interaction device displays the working state of the function module in real time.
3. The method of claim 2, wherein the function module responds to an operation instruction issued by the main controller or the human-computer interaction device, and the function module operates, and comprises the following steps:
and responding to the instruction for checking the functional modules, which is acquired by the human-computer interaction device, the main controller polls at least two functional modules in sequence to acquire the human-computer interaction interface information of each functional module one by one and control the human-computer interaction device to display the human-computer interaction interface of each functional module in sequence.
4. The method of claim 3, wherein the at least two functional modules are connected to the master module via the communication bus, the method further comprising:
in the process of polling at least two functional modules, the main controller sends a query instruction to all the functional modules through the communication bus;
responding to the inquiry instruction, the functional module generates random time, and keeps monitoring a communication bus in the random time;
if no other functional module sends a response data frame within random time, the functional module sends the response data frame through the communication bus in an encryption mode, wherein the response data frame comprises parity check bits;
the master controller performs parity check on the response data frame;
and if the parity check is passed, sending a confirmation frame to the functional module.
5. The method of claim 1, wherein the master controller communicates with the slave controller via the communication bus, comprising:
the master controller and the slave controller communicate in encrypted form.
6. The method of claim 5, wherein the communication between the master module and the slave controller is in encrypted form, comprising:
the method comprises the steps that a data sending party in a main control module and all functional modules calculates an information original text by using an abstract algorithm to obtain a first abstract value;
the data sender signs the first digest value by using a private key of the data sender to generate a signature value;
the data sender combines and encrypts the signature value and the information original text to obtain encrypted data;
the data sender sends the encrypted data to the main control module and the data receivers in all the functional modules;
the data receiver decrypts the encrypted data to obtain an information original text and a signature value;
the data receiving party calculates the information text by using the abstract algorithm to obtain a second abstract value;
the data receiver checks the signature of the signature value by using the public key of the data sender to obtain a first abstract value;
and if the first abstract value is consistent with the second abstract value, the data receiving party processes the information original text.
7. The method of claim 1, wherein the communication between the master module and the slave controller is in encrypted form, and wherein the method comprises:
the main control module and each function module negotiate to determine safety parameter information;
the main control module and each function module calculate the safety parameter information by using the same key negotiation algorithm, and obtain and store the symmetric key of each function module.
8. The method according to claim 1, wherein the master control module and the functional modules each store a respective device certificate, the at least one functional module is connected to the master control module and the certificate and key distribution apparatus via a communication bus, and the master control module and the functional modules communicate with each other in an encrypted form, and the method comprises:
the main control module and all the functional modules send own device certificates to the certificate and key distribution device through a communication bus, so that the certificate and key distribution device performs validity verification on the device certificate of each module.
9. A household appliance, characterized in that the household appliance comprises a processor; the processor is configured to execute instructions to implement the method of any one of claims 1-8.
10. A computer-readable storage medium, characterized in that a program file capable of implementing the method of any one of claims 1-8 is stored in the computer-readable storage medium.
11. A household appliance, characterized in that it comprises:
the main control module comprises a main controller and a man-machine interaction device, and the main controller is connected with the communication bus;
each functional module comprises a slave controller and stores human-computer interaction interface information of the functional module, and the slave controller is connected to the communication bus so that the functional modules can send the human-computer interaction interface information of the functional modules to the master controller through the communication bus, and the master controller controls the human-computer interaction device to display the human-computer interaction interface of the functional module according to the human-computer interaction interface information.
12. The household appliance according to claim 11, wherein a security chip is integrated in the main control module and all the functional modules, and each module encrypts and decrypts data through its own security chip so as to perform encrypted communication with other modules.
13. The household appliance of claim 11, further comprising a protocol conversion module disposed between the communication bus and the unmatched module,
wherein the unmatched module is a module unmatched with a communication protocol of the communication bus.
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