CN108134726A - Communication system, communication means and the household electrical appliance of household electrical appliance - Google Patents
Communication system, communication means and the household electrical appliance of household electrical appliance Download PDFInfo
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- CN108134726A CN108134726A CN201711367976.2A CN201711367976A CN108134726A CN 108134726 A CN108134726 A CN 108134726A CN 201711367976 A CN201711367976 A CN 201711367976A CN 108134726 A CN108134726 A CN 108134726A
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- module
- message
- host module
- communication
- electrical appliance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40019—Details regarding a bus master
Abstract
The invention discloses a kind of communication system of household electrical appliance, communication means and household electrical appliance, communication systems to include：Multiple slave modules, each slave module have communication interface, and communication interface has receiving terminal and transmitting terminal；Host module, host module has communication interface, communication interface has receiving terminal and transmitting terminal, receiving terminal in the communication interface of multiple slave modules is connected with the transmitting terminal in the communication interface of host module, transmitting terminal in the communication interface of multiple slave modules is connected with the receiving terminal in the communication interface of host module, host module is used to send to multiple slave modules when system changes and broadcast the message, and send triggering message to multiple slave modules, and receive the feedback message of at least one slave module feedback in multiple slave modules, under the premise of production cost is not promoted, realize the group-net communication between the more slaves of single host, the event mode communication of each intermodule is constructed simultaneously, it ensure that communication efficiency to the greatest extent.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of communication system of household electrical appliance, a kind of household electric
Device and a kind of communication means of household electrical appliance.
Background technology
UART (Universal Asynchronous Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter)
Communication is gradually widely used in because of relatively low physical layer cost, higher traffic rate and more perfect verification scheme
The usage scenarios such as control, short distance interaction.In the related art, UART communications are usually only used as point-to-point communication, are when one
When system needs to carry out between multiple equipment information exchange, bus message need to be converted information by bus transceiver, such as
485th, CAN etc. or pass through the main computer unit with multiple UART resources, point-to-point connection is to multiple appendent computer systems respectively.But
It is, the problem is that, it can all cause production cost using bus transceiver or using the main computer unit of multiple UART resources
Rising.
Invention content
One of the technical issues of the present invention is directed to solve at least to a certain extent in above-mentioned technology.For this purpose, the present invention
One purpose is to propose a kind of communication system of household electrical appliance, can be realized single main under the premise of production cost is not promoted
The communication mechanism of the more slaves of machine.
Second object of the present invention is to propose a kind of household electrical appliance.
Third object of the present invention is to propose a kind of communication means of household electrical appliance.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of communication system of household electrical appliance, including：
Multiple slave modules, wherein, each slave module has communication interface, and the communication interface has receiving terminal and transmission
End；Host module, wherein, the host module has communication interface, and the communication interface has receiving terminal and transmitting terminal, described
Receiving terminal in the communication interface of multiple slave modules is connected with the transmitting terminal in the communication interface of the host module, described
Transmitting terminal in the communication interface of multiple slave modules is connected with the receiving terminal in the communication interface of the host module,
In, the host module, for sending broadcast message and to described to the multiple slave module when system changes
Multiple slave modules send triggering message, and the feedback for receiving at least one slave module feedback in the multiple slave module disappears
Breath.
The communication system of the household electrical appliance proposed according to embodiments of the present invention, multiple slave mould each slave modules in the block
With communication interface, host module also has a communication interface, and the receiving terminal in the communication interface of multiple slave modules is and host
Transmitting terminal in the communication interface of module is connected, and the transmitting terminal in the communication interface of multiple slave modules is logical with host module
Letter interface in receiving terminal be connected, host module when system changes to multiple slave modules send broadcast message and
Triggering message is sent, and the feedback for receiving at least one slave module feedback in multiple slave modules disappears to multiple slave modules
Breath.The communication system of the embodiment of the present invention sends broadcast message by host module to multiple slave modules as a result, and triggering disappears
Breath, and the feedback message of at least one slave module feedback is received, so as under the premise of production cost is not promoted, realize
Group-net communication between the more slaves of single host, while the event mode communication of each intermodule is constructed, it ensure that the greatest extent logical
Believe efficiency.
In addition, the communication system of the household electrical appliance proposed according to the above embodiment of the present invention, can also have following additional
Technical characteristic：
According to one embodiment of present invention, the host module, the broadcast that can be additionally operable to receive the transmission of slave module please
Message is sought, and is sent and broadcast the message to the multiple slave module according to the broadcast request message.
According to one embodiment of present invention, the host module can be additionally operable to after the feedback message is received,
Judge whether the system mode changes, then send broadcast the message to the multiple slave module if there is a change.
According to one embodiment of present invention, when the host module receives the feedback of multiple slave modules transmissions simultaneously
During message, the host module can be additionally operable to be polled the multiple slave module.
According to one embodiment of present invention, the slave module can be additionally operable to when the slave module powers on, to institute
It states host module and sends broadcast request message.
According to one embodiment of present invention, the slave module can be additionally operable to after the triggering message is received,
Judge whether the oneself state of the slave module changes, if there is a change, then send and feed back to the host module
Message.
According to one embodiment of present invention, the communication interface can be universal asynchronous receiving-transmitting transmitter UART interface, institute
Stating UART interface may include：First resistor, the first end of the first resistor are connected with the transmitting terminal of the UART interface；Second
Resistance, the first end of the second resistance are connected with the receiving terminal of the UART interface；3rd resistor, the of the 3rd resistor
One end is connected with the second end of the first resistor, the second end of the 3rd resistor and the host module or slave module phase
Even；4th resistance, the first end of the 4th resistance are connected with the second end of the second resistance, and the second of the 4th resistance
End is connected with the host module or slave module；First clamp diode, first clamp diode and the described first electricity
The second end of resistance is connected；Second clamp diode, second clamp diode are connected with the second end of the second resistance；Electricity
Hold, the first end of the capacitance is connected with the second end of the second resistance, the second end ground connection of the capacitance；5th resistance,
The first end of 5th resistance is connected with the second end of the second resistance, the second end of the 5th resistance and power supply phase
Even.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of household electrical appliance, including the household
The communication system of electric appliance.
The household electrical appliance proposed according to embodiments of the present invention, by the communication system of household electrical appliance, so as to not promote life
Under the premise of producing cost, the group-net communication between the more slaves of single host is realized, while the event mode for constructing each intermodule is led to
Letter, ensure that communication efficiency to the greatest extent.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of communication means of household electrical appliance, household
Electric appliance has multiple slave modules and host module, the receiving terminal in the communication interface of the multiple slave module with the master
Transmitting terminal in the communication interface of machine module is connected, the transmitting terminal in the communication interface of the multiple slave module with the master
Receiving terminal in the communication interface of machine module is connected, and the communication means includes the following steps：When system changes to institute
Multiple slave modules are stated to send broadcast message and send triggering message to the multiple slave module；Receive it is the multiple from
The feedback message of at least one slave module feedback in machine module.
The communication means of the household electrical appliance proposed according to embodiments of the present invention, by when system changes to it is multiple from
Machine module sends broadcast message and sends triggering message to multiple slave modules, receives at least one in multiple slave modules
The feedback message of slave module feedback.The communication means of the embodiment of the present invention is real under the premise of production cost is not promoted as a result,
The group-net communication between the more slaves of single host is showed, while has constructed the event mode communication of each intermodule, ensured to the greatest extent
Communication efficiency.
In addition, the communication means of the household electrical appliance proposed according to the above embodiment of the present invention, can also have following additional
Technical characteristic：
According to one embodiment of present invention, the communication means of household electrical appliance can further include：Receive what slave module was sent
Broadcast request message, and sent and broadcast the message to the multiple slave module according to the broadcast request message.
According to one embodiment of present invention, the communication means of household electrical appliance can further include：Disappear receiving the feedback
After breath, judge whether the system mode changes, then send broadcast to the multiple slave module if there is a change
Message.
According to one embodiment of present invention, the communication means of household electrical appliance can further include：When simultaneously receive it is multiple from
During the feedback message that machine module is sent, the multiple slave module is polled.
According to one embodiment of present invention, the communication means of household electrical appliance can further include：It is powered in the slave module
When, send broadcast request message to the host module.
According to one embodiment of present invention, the communication means of household electrical appliance can further include：Disappear receiving the triggering
After breath, judge whether the oneself state of the slave module changes, if there is a change, then sent out to the host module
Send feedback message.
Description of the drawings
Fig. 1 is the block diagram according to the communication system of the household electrical appliance of the embodiment of the present invention；
Fig. 2 is the structure diagram according to the communication system of the household electrical appliance of one embodiment of the invention；
Fig. 3 is the circuit diagram according to the communication interface of the communication system of the household electrical appliance of the embodiment of the present invention；
Fig. 4 is the block diagram according to the household electrical appliance of the embodiment of the present invention；
Fig. 5 is the flow chart according to the communication means of the household electrical appliance of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the communication system of the household electrical appliance of the embodiment of the present invention, household electrical appliance and household electrical appliance are described
Communication means.
Fig. 1 is the block diagram according to the communication system of the household electrical appliance of the embodiment of the present invention.As shown in Figure 1, this hair
The communication system of the household electrical appliance of bright embodiment, including：Multiple slave modules 10 and host module 20.
Wherein, each slave module 10 has communication interface, and communication interface has receiving terminal RX10 and transmitting terminal TX10；It is main
Machine module 10 has communication interface, and communication interface has receiving terminal RX20 and transmitting terminal TX20, the communication of multiple slave modules 10
Receiving terminal RX10 in interface can be connected with the transmitting terminal TX20 in the communication interface of host module 20, multiple slave modules 10
Communication interface in transmitting terminal TX10 can be connected with the receiving terminal RX20 in the communication interface of host module 20.
Specifically, as shown in Fig. 2, multiple slave modules 10 may include the first slave module 11, the second slave module 12 ...
N slave module 1N, wherein, receiving terminal RX11 and the communication of host module 20 in the communication interface of the first slave module 11 connect
Transmitting terminal TX20 in mouthful is connected, the communication of the receiving terminal RX12 in the communication interface of the second slave module 12 and host module 20
Receiving terminal RX1N in the communication interface of transmitting terminal TX20 in interface is connected ... N slave modules 1N is logical with host module 20
Transmitting terminal TX20 in letter interface is connected, the transmitting terminal TX11 in the communication interface of the first slave module 11 and host module 20
Receiving terminal RX20 in communication interface is connected, the transmitting terminal TX12 in the communication interface of the second slave module 12 and host module 20
Communication interface in receiving terminal RX20 be connected ... the transmitting terminal TX1N of N slave modules 1N and the communication interface of host module 20
In receiving terminal RX20 be connected.Wherein, by taking refrigerator as an example, master control borad can be used as host module 20, show control plate and refrigeration lamp control
Plate can be used as slave module 10, and host module 20 and multiple slave modules 10 may not include WiFi module and large-size screen monitors.
According to one embodiment of present invention, slave module 10 and the communication interface of host module 20 can be universal asynchronous
Receiving-transmitting transmitter UART interface.Specifically, as shown in figure 3, UART interface may include：First resistor R1, second resistance R2, third
Resistance R3, the 4th resistance R4, the first clamp diode DD1, the second clamp diode DD2, capacitance C1 and the 5th resistance R5.
Wherein, the first end of the first capacitance R1 is connected with the transmitting terminal TXD of UART interface；The first end of second resistance R2 with
The receiving terminal RXD of UART interface is connected；The first end of 3rd resistor R3 is connected with the second end of first resistor R1,3rd resistor R3
Second end be connected with host module 20 or slave module 10；The first end of 4th resistance R4 and the second end phase of second resistance R2
Even, the second end of the 4th resistance R4 is connected with host module 20 or slave module 10；First clamp diode DD1 and first resistor
The second end of R1 is connected；Second clamp diode DD2 is connected with the second end of second resistance R2；The first end of capacitance C1 and second
The second end of resistance R2 is connected, the second end ground connection of capacitance C1；The first end of 5th resistance R5 and the second end of second resistance R2
It is connected, the second end of the 5th resistance R5 is connected with power supply VCC.Wherein, power supply VCC can be+5V power supplys.
Specifically, the first clamp diode DD1 and the second clamp diode DD2 is used for when abnormal level scurries into circuit
Protect other elements in circuit.3rd resistor R3 is the current-limiting resistance of transmitting terminal TXD, when the second end and host of 3rd resistor R3
When module 20 is connected, 3rd resistor R3 is for ensureing when 10 quantity of slave module is more, the transmitting terminal of restricting host module 10
The electric current output of TXD functions, ensures fan out capability；When the second end of 3rd resistor R3 is connected with slave module 10, third electricity
It hinders R3 to be used for when two slave module transmission levels are opposite, the electric current between limitation slave module 10 is in controlled area charactert, protection
Integrated circuit will not damage.Wherein, multiple slave modules 10 can obtain the support of 12V/GND power supplys, host mould from host module 20
The crystal oscillator error of block 20 and multiple slave modules 10 can be within 2.3%.
In embodiments of the present invention, host module 20 is used to send extensively to multiple slave modules 10 when system changes
It broadcasts message and sends triggering message, and receive at least one slave mould in multiple slave modules 10 to multiple slave modules 10
The feedback message that block 10 is fed back.
That is, when host module 20 sends broadcast message or triggering message to multiple slave modules 10, can pass through
The transmitting terminal TX20 of the communication interface of host module 20 will broadcast the message or triggering message is sent to the logical of multiple slave modules 10
The receiving terminal RX10 of interface is believed, so that broadcast message or triggering message that 10 receiving host module 20 of multiple slave modules is sent；
When each slave module 10 is to 20 feedback message of host module, the transmitting terminal of the communication interface of each slave module 10 can be passed through
TX10 sends a message to the receiving terminal RX20 of the communication interface of host module 20, so that host module 20 receives each slave mould
The feedback information of block 10.
The communication system of the embodiment of the present invention as a result, under the premise of the cost of original UART physical layers is indeclinable, is realized
The communication of the more slaves of single host, is effectively saved production cost, while constructs the event mode communication of each intermodule, maximum journey
Degree ensure that communication efficiency.
According to one embodiment of present invention, host module 20, which is additionally operable to receive the broadcast request that slave module is sent, disappears
Breath, and sent and broadcast the message to multiple slave modules 10 according to broadcast request message.
That is, slave module 10 can send broadcast request message to host module 20, host module 20 is receiving
To after broadcast request message, it can send and broadcast the message to multiple slave modules 10.
The communication protocol between multiple slave modules 10 and host module 20 illustrates below.
It in one particular embodiment of the present invention, can be according to communication protocols between host module 20 and multiple slave modules 10
View communicates, the message structure of communication protocol agreement (such as broadcast message, broadcast request message, trigger message and feedback and disappear
The message structure of breath) it can be as shown in table 1：
Table 1
Wherein, device id is used for the natural number of each slave module 10 in engagement system.Type of message mark is for about
Determine the purposes of message, multiple slave modules 10 and host module 20 and different processing modes is used to different messages uses.Separately
Outside, because the space that device id and type of message mark have 1BYTE (byte) respectively is expanded, make interacting message and multiple
The analysis protocol of slave module has larger expand space.
Specifically, can the message that communication protocol is arranged be subjected to type of message division, as shown in table 2：
Table 2
As shown in table 2, type of message can be divided into unconditional frame, trigger frame, accidental frame etc., wherein, each type of message can
It is identified using a variety of type of messages, in other words, belongs to the request or order of same type of message, different requests or order can adopt
It is identified with different type of messages, for example, it is unconditional frame that device broadcasts, which ask the type of message of summation device control command, but
It is that the two is identified for different type of messages, thus, the type of message of device broadcasts request is identified as 0x01, equipment control life
The type of message of order is expressed as 0x02.
Type of message mark can be consistent when request is with returning, and in other words, host module 20 is sent to multiple slave modules 10
Message type of message mark with multiple slave modules 10 feed back to host module 20 feedback message type of message identify
Unanimously or multiple slave modules 10 be sent to host module 20 message type of message mark with host module 20 feed back to it is more
The type of message mark of the message of a slave module 10 is consistent.
Further, host module 20 can be to multiple 10 sending device control commands of slave module with to multiple slave modules
10 are controlled；Host module 20 can inquire multiple slave modules 10 to multiple 10 sending device querying commands of slave module
State；Multiple slave modules 10 can be broadcasted to 20 sending device broadcast request of host module with requesting host module 20；It is main
Machine module 20 can send Host Status variation broadcast to multiple slave modules 10 to broadcast system mode；Host module 20
Host Status variation broadcast can be sent to multiple slave modules 10 to broadcast system mode；Host module 20 can also be to more
A slave module 10 sends slave status and changes inquiry with the state change to slave module 10.
Wherein, it should be noted that the Host Status variation broadcast that host module 20 is sent can be the wide of previous embodiment
Message is broadcast, the type of message of broadcast message is accidental frame；The slave status variation inquiry that host module 20 is sent can be aforementioned reality
The triggering message of example is applied, the type of message for triggering message is trigger frame；The equipment query order that host module 20 is sent can be wheel
Message is ask, the type of message of polling message is unconditional frame；The device broadcasts request that multiple slave modules 10 are sent can be aforementioned
The broadcast request message of embodiment, the type of message of broadcast request message is unconditional frame.
The communication process of the communication system of the embodiment of the present invention is illustrated below.
In some embodiments of the invention, host module 20 in system state change or can receive slave mould
When during the request broadcast message of block or receiving feedback message, broadcast message is sent with to system to multiple slave modules 10
Current state is broadcasted.Wherein, each slave module 10 can carry out accordingly the state of itself after receiving broadcast message
Calculating and update.
It should be noted that when host module 20 sends to multiple slave modules 10 and broadcasts the message, it can be current by system
State is packaged to generate broadcast message, and is broadcasted with 0x00 (full device broadcasts) 0x3A (accidental frame) and disclosure agreement；It is more
A slave module 10 can receiving host module 20 send broadcast message, for the slave mould of user's operation function can be received
Block under non-acknowledgement state (as unlocked), can not adopt the authority information of this module；It, can be according to wide for other slave modules
It broadcasts information and updates the current state of itself.
Specifically, host module 20 itself can detect system mode to judge whether system mode changes, such as main
Machine module 20 can judge that system becomes when detecting system model switching, door opening and closing state variation and sensor fault etc.
Change.In addition, host module 20 also can know whether system mode is sent out by other modules such as slave module or WiFi module
Changing.
By taking refrigerator as an example, master control borad can be when system changes to aobvious control plate and refrigeration lamp control as host module 20
The slaves such as plate module 10 sends broadcast message, for example, user opens refrigerator doors, and host module 20 can detect door state change
Change, and multiple slave modules 10, multiple slave modules are sent to using enabling information as broadcast message when communication heartbeat arrives
10 can receive enabling information, and display board is shown according to enabling information, and refrigeration lamp control panel is controlled according to enabling information
Refrigeration lamp is lighted to be illuminated.
According to one embodiment of present invention, host module 20 is additionally operable to after feedback message is received, and judges system
Whether state changes, and then sends broadcast the message to multiple slave modules 10 if there is a change.That is, host module
20 can know whether system mode changes by slave module.
Specifically, slave module can send feedback message to host module 20, and host module 20 disappears receiving feedback
After breath, the feedback message received can be verified, be parsed and operation, then judge whether system changes, if
It changes, then sends and broadcast the message, and terminate this communication cycle to multiple slave modules 10；If do not changed,
It does not send and broadcasts the message to multiple slave modules 10.For example, when master control borad judges according to the message received the setting of refrigerating chamber
When temperature changes, the set temperature of renewable refrigerating chamber is simultaneously broadcast to multiple slave modules 10；And master control borad is according to reception
When the message arrived judges that system mode is unchanged, directly terminate this communication cycle.
According to one embodiment of present invention, when host module 20 receives the feedback of multiple transmissions of slave modules 10 simultaneously
During message, host module 20 is additionally operable to be polled multiple slave modules 10.
It should be understood that polling message of each slave module response for equipment of itself ID, and set for non-self
The polling message of standby ID is not responded.
Specifically, when multiple slave modules 10 send feedback message simultaneously, because the ID of multiple slave modules 10 is not
Same and check code is different, but message synchronization is identical, so host module 20 can receive feedback message, but verification can not
Pass through.At this point, host module 20 actively initiate poll, multiple slave modules 10 are polled, i.e., are instructed using equipment query,
Each slave module is inquired in sequence, each slave module is in the polling message for receiving equipment of itself ID to master
Machine module 10 sends feedback message, and is not responded in the polling message for receiving non-self device id, thus can obtain more
The state of a slave module 10, host module 20 to once broadcasted after multiple 10 end of polling(EOP)s of slave module so that it is multiple from
Machine module 10 obtains current system conditions, and terminates this communication cycle.
For example, when master control borad receives feedback message from display board and temperature-changing chamber display board simultaneously, master control borad is right respectively
Aobvious control plate, temperature-changing chamber display board and refrigeration lamp control panel etc. are polled, and obtain the shape of display board and temperature-changing chamber display board respectively
State changes, and later, master control borad is broadcasted again so that each slave module obtains current system conditions.
According to one embodiment of present invention, slave module 10 is additionally operable to after receiving the trigger message, judge slave
Whether the oneself state of module 10 changes, and if there is a change, then sends feedback message to host module 20.Wherein, it is main
Machine module 20 can send triggering message when without broadcast message demand to multiple slave modules 10, to become to the state of slave module
Change is collected.
That is, not changing in system and host module 20 is not received by the broadcast request of slave module
Message and when host module 20 is not received by feedback message, host module 20 can send triggering to multiple slave modules 10 and disappear
Breath, for example, host module 20 can send triggering message in each clock node, so as to the shape for discharging bus, collecting slave module
State changes.Wherein, the frequency that host module 20 sends triggering message is 1 time/S.
Each slave module 10 after receiving the trigger message, judges whether oneself state changes, if itself
State changes, then sends feedback message to host module 20.If sending feedback message without slave module, terminate this
Secondary communication；If a slave module sends feedback message, the feedback message that host module 20 sends the slave module
It verified, parsed and operation, if system mode is once broadcasted because the feedback message changes and terminates this
Communication；If there is two and more than two slave modules send feedback message i.e. while respond triggering message simultaneously, then host
Module is switched to polling status, and multiple slave modules 10 are polled, are once broadcasted after poll, and it is logical to terminate this
Letter.
For example, when user on aobvious control plate after the set temperature of refrigerating chamber is had adjusted, since oneself state changes,
Feedback message can be transmitted in aobvious control plate after the triggering message for receiving master control borad transmission, to reply current set temperature state；Again
Such as, after master control borad sends triggering message, when the stateless variation of multiple slave modules 10, multiple slave modules 10 without into
Row is replied；For another example, it after master control borad sends triggering message, when aobvious control plate, alternating temperature show that board status changes, shows control plate, become
Warm display board sends feedback message simultaneously, and communication check errors occur due to two slave modules are replied simultaneously for master control borad, at this time
Master control borad starts poll.
Host module can be in the case where the rational communication heartbeat time be configured, by triggering message, broadcasting the message and look into as a result,
The state switching between message is ask, makes to form the communication of event mode between host module and multiple slave modules, in multiple slaves
Communication efficiency is ensure that under the premise of module to the greatest extent.
According to one embodiment of present invention, slave module is additionally operable to, when slave module powers on, send out to host module 20
Send broadcast request message.
That is, when each slave module powers on start-up operation, broadcast request message can be sent to host module 20, it is main
Machine module 20 sends to multiple slave modules 10 according to broadcast request message and broadcasts the message.
According to one embodiment of present invention, multiple slave modules 10 need not send feedback message in no transmission task
Or during broadcast request message, the transmitting terminal TX pins of each slave module can be set to input state, to discharge bus, wherein,
Input state can be high impedance status.
As described above, in a specific embodiment of the invention, aforementioned communication system is applied to communication process during refrigerator
It is as follows：
Refrigerator system powers on, and master control borad broadcasts refrigerator system current state, shows control plate and refrigeration lamp control panel etc.
According to the current state of broadcast information updating itself；When the user opens the refrigerator door, master control borad detects that door state changes, and
Aobvious control plate and refrigeration lamp control panel etc. are sent to using enabling information as broadcast message when communication heartbeat arrives, shows control plate and refrigeration
Lamp control panel receives enabling information, and display board is shown according to enabling information, and refrigeration lamp control panel is according to enabling information
Control refrigeration lamp is lighted to be illuminated.
When user on aobvious control plate after the set temperature of refrigerating chamber is had adjusted, since oneself state changes, aobvious control plate exists
Feedback message can be transmitted after receiving the triggering message of master control borad transmission, to reply current set temperature state, master control borad is connecing
It after receiving feedback message, is verified and is parsed, update default, and once broadcasted.
It does not change in system and master control borad is not received by the broadcast request message and master control borad of slave module
When being not received by feedback message, triggering message can be transmitted in master control borad, shows the stateless variation such as control plate and refrigeration lamp control panel,
Master control borad terminates this communication.
Alternating temperature display board accesses refrigerator system, after the triggering message for receiving master control borad transmission, because current state is not
Know, alternating temperature display board sends broadcast request message to master control borad, and master control borad is after broadcast request message is received, next logical
Confidence, which is jumped, sends broadcast message, shows control plate, alternating temperature display board and refrigeration lamp control panel etc. and obtains newest system mode.
After master control borad sends triggering message, show control plate and alternating temperature display board can stateful variation, and simultaneously to master control borad
Send feedback message, master control borad causes check errors due to multiple slaves are replied simultaneously, at this point, master control borad respectively to aobvious control plate,
Alternating temperature display board and refrigeration lamp control panel etc. are polled, and then master control borad obtains aobvious control plate, alternating temperature display board and refrigeration lamp control
The current state of making sheet, master control borad is once broadcasted after end of polling(EOP) so that multiple slave modules obtain current system shape
State, and terminate this communication cycle.
In conclusion the communication system of the household electrical appliance proposed according to embodiments of the present invention, multiple slave moulds are in the block every
A slave module has communication interface, and host module also has communication interface, the reception in the communication interface of multiple slave modules
End be connected with the transmitting terminal in the communication interface of host module, the transmitting terminal in the communication interface of multiple slave modules with master
Receiving terminal in the communication interface of machine module is connected, and host module sends to multiple slave modules when system changes and broadcasts
Message and triggering message is sent to multiple slave modules, and receive at least one slave module feedback in multiple slave modules
Feedback message.The communication system of the embodiment of the present invention is sent to multiple slave modules by host module and broadcast the message as a result,
With triggering message, and the feedback message of at least one slave module feedback is received, so as in the premise for not promoting production cost
Under, the group-net communication between the more slaves of single host is realized, while construct the event mode communication of each intermodule, to the greatest extent
It ensure that communication efficiency.
The embodiment of the present invention also proposed a kind of household electrical appliance.
Fig. 4 is the block diagram of the household electrical appliance of the embodiment of the present invention.As shown in figure 4, household electrical appliance 200 include household
The communication system 100 of electric appliance.Wherein, household electrical appliance 200 can be refrigerator.
The household electrical appliance proposed according to embodiments of the present invention by the communication system of household electrical appliance, are produced into not promoted
Under the premise of this, the group-net communication between the more slaves of single host is realized, while constructs the event mode communication of each intermodule, most
Big degree ensure that communication efficiency.
Fig. 5 is the flow chart according to the communication means of the household electrical appliance of the embodiment of the present invention.Wherein, household electrical appliance have master
Machine module and multiple slave modules, receiving terminal in the communication interface of multiple slave modules in the communication interface of host module
Transmitting terminal be connected, the transmitting terminal in the communication interface of multiple slave modules with the receiving terminal in the communication interface of host module
It is connected.
As shown in figure 5, the communication means of the embodiment of the present invention includes the following steps：
S1：Host module sends to multiple slave modules when system changes and broadcasts the message.
S2：Host module also sends triggering message to multiple slave modules, and receives at least one in multiple slave modules
The feedback message of slave module feedback.
According to one embodiment of present invention, the communication means of household electrical appliance further includes：Host module receives slave module
The broadcast request message of transmission, and sent and broadcast the message to multiple slave modules according to broadcast request message.
That is, slave module can send broadcast request message to host module, host module is receiving broadcast
After request message, it can send and broadcast the message to multiple slave modules.
The communication process of the communication system of the embodiment of the present invention is illustrated below.
In some embodiments of the invention, host module in system state change or can receive slave module
Request broadcast message when or when receiving feedback message, send broadcast message to multiple slave modules with current to system
State is broadcasted, wherein, each slave module can calculate the state of itself accordingly after receiving broadcast message
And update,
It should be noted that when host module sends to multiple slave modules and broadcasts the message, it can be by system current state
It is packaged to generate broadcast message, and is broadcasted with 0x00 (full device broadcasts) 0x3A (accidental frame) and disclosure agreement；It is multiple from
Machine module can receiving host module send broadcast message, for the slave module of user's operation function can be received, it is non-really
Recognize under state (as unlocked), the authority information of this module can not be adopted；It, can be according to broadcast information updating for other slave modules
The current state of itself.
Specifically, host module itself can detect system mode to judge whether system mode changes, such as host
Module can judge that system changes when detecting system model switching, door opening and closing state variation and sensor fault etc..Separately
Outside, host module also can know whether system mode becomes by other modules such as slave module obtains WiFi module
Change.
By taking refrigerator as an example, master control borad can be when system changes to aobvious control plate and refrigeration lamp control panel as host module
Slaves module is waited to send broadcast message, for example, user opens refrigerator doors, and host module can detect door state variation, and
Multiple slave modules are sent to using enabling information as broadcast message when communication heartbeat arrives, multiple slave modules can receive
To enabling information, display board is shown according to enabling information, and refrigeration lamp control panel controls refrigeration lamp to light according to enabling information
To be illuminated.
According to one embodiment of present invention, the communication means of household electrical appliance further includes：After feedback message is received,
Judge whether system mode changes, then send broadcast the message to multiple slave modules if there is a change.It is that is, main
Machine module can know whether system mode changes by slave module.
Specifically, slave module can to host module send feedback message, host module receive feedback message it
Afterwards, the feedback message received can be verified, parsed and operation, then judge whether system changes, if it happens
Variation then sends to multiple slave modules and broadcasts the message, and terminate this communication cycle；If do not changed, not to more
A slave module sends broadcast message.For example, when master control borad judges that the set temperature of refrigerating chamber occurs according to the message received
During variation, the set temperature of renewable refrigerating chamber is simultaneously broadcast to multiple slave modules；And master control borad is sentenced according to the message received
When system mode of breaking is unchanged, directly terminate this communication cycle.
According to one embodiment of present invention, the communication means of household electrical appliance further includes：When host module receives simultaneously
During the feedback message that multiple slave modules are sent, host module is also polled multiple slave modules.
It should be understood that polling message of each slave module response for equipment of itself ID, and set for non-self
The polling message of standby ID is not responded.
Specifically, when multiple slave modules send feedback message simultaneously because the ID differences of multiple slave modules with
And check code is different, but message synchronization is identical, so host module can receive feedback message, but verification can not lead to
It crosses.At this point, host module actively initiates poll, multiple slave modules are polled, i.e., are instructed using equipment query, according to suitable
The each slave module of ordered pair is inquired, and each slave module is in the polling message for receiving equipment of itself ID to host module
Feedback message is sent, and is not responded in the polling message for receiving non-self ID, thus can be obtained multiple from slave module
State, host module to multiple slave module polls after once broadcasted so that multiple slave modules obtain current system
System state, and terminate this communication cycle.
For example, when master control borad receives feedback message from display board and temperature-changing chamber display board simultaneously, master control borad is right respectively
Display board, alternating temperature display board, refrigeration lamp control panel etc. are polled, and the state for obtaining display board and alternating temperature display board respectively becomes
Change, later, master control borad is broadcasted again so that each slave module obtains current system conditions.
According to one embodiment of present invention, the communication means of household electrical appliance further includes：Slave module is receiving triggering
After message, judge whether the oneself state of slave module changes, if there is a change, then send and feed back to host module
Message.Wherein, host module can send triggering message when without broadcast message demand to multiple slave modules, with to slave module
State change carry out mobile phone.
That is, not changing in system and host module is not received by the broadcast request of slave module and disappears
Breath and host module is when being not received by feedback message, host module can send triggering message to multiple slave modules, for example,
Host module can send triggering message in each clock node, so as to the state change for discharging bus, collecting slave module.Its
In, the frequency that host module sends triggering message is 1 time/S.
Each slave module after receiving the trigger message, judges whether oneself state changes, if itself shape
State changes, then sends feedback message to host module.If sending feedback message without slave module, it is logical to terminate this
Letter；If a slave module sends feedback message, the feedback message that host module sends the slave module carries out school
It tests, parse and operation, if system mode because the feedback message changes, is once broadcasted and terminates this communication；
If there is two and more than two slave modules send feedback message i.e. while respond triggering message simultaneously, then host module is cut
Polling status is changed to, multiple slave modules are polled, are once broadcasted after poll, and terminate this communication.
For example, when user on aobvious control plate after the set temperature of refrigerating chamber is had adjusted, since oneself state changes,
Feedback message can be transmitted in aobvious control plate after the triggering message for receiving master control borad transmission, to reply current set temperature state；Again
Such as, after master control borad sends triggering message, when multiple slave modules statelessly change, multiple slave modules are without being returned
It is multiple；For another example, after master control borad sends triggering message, when aobvious control plate, alternating temperature show that board status changes, aobvious control plate, alternating temperature are shown
Show that plate sends feedback message simultaneously, communication check errors, at this time master control occur due to two slave modules are replied simultaneously for master control borad
Plate starts poll.
Host module can be in the case where the rational communication heartbeat time be configured, by triggering message, broadcasting the message and look into as a result,
The state switching between message is ask, makes to form the communication of event mode between host module and multiple slave modules, in multiple slaves
Communication efficiency is ensure that under the premise of module to the greatest extent.
According to one embodiment of present invention, slave module sends to host module and broadcasts also when slave module is powered on
Request message.
That is, each slave module powers on start-up operation room, broadcast request message, host can be sent to host module
Module sends to multiple slave modules according to broadcast request message and broadcasts the message.
According to one embodiment of present invention, multiple slave modules no transmission task i.e. need not send feedback message or
During broadcast request message, the transmitting terminal pin of each slave module can be set to input state, to discharge bus, wherein, input
State can be high impedance status.
As described above, in a specific embodiment of the invention, aforementioned communication system is applied to communication process during refrigerator
It is as follows：
Refrigerator system powers on, and master control borad broadcasts refrigerator system current state, shows control plate and refrigeration lamp control panel etc.
According to the current state of broadcast information updating itself.
When the user opens the refrigerator door, master control borad detects that door state changes, and will open the door and believe when communication heartbeat arrives
Breath is sent to aobvious control plate and refrigeration lamp control panel etc. as broadcast message, and aobvious control plate and refrigeration lamp control panel receive enabling letter
Breath, display board are shown that refrigeration lamp control panel controls refrigeration lamp to light to be shone according to enabling information according to enabling information
It is bright.
When user on aobvious control plate after the set temperature of refrigerating chamber is had adjusted, since oneself state changes, aobvious control plate exists
Feedback message can be transmitted after receiving the triggering message of master control borad transmission, to reply current set temperature state, master control borad is connecing
It after receiving feedback message, is verified and is parsed, update default, and once broadcasted.
It does not change in system and master control borad is not received by the broadcast request message and master control borad of slave module
When being not received by feedback message, triggering message can be transmitted in master control borad, shows the stateless variation such as control plate and refrigeration lamp control panel,
Master control borad terminates this communication.
Alternating temperature display board accesses refrigerator system, after the triggering message for receiving master control borad transmission, because current state is not
Know, alternating temperature display board sends broadcast request message to master control borad, and master control borad is after broadcast request message is received, next logical
Confidence, which is jumped, sends broadcast message, shows control plate, alternating temperature display board and refrigeration lamp control panel etc. and obtains newest system mode.
After master control borad sends triggering message, show control plate and alternating temperature display board can stateful variation, and simultaneously to master control borad
Send feedback message, master control borad causes check errors due to multiple slaves are replied simultaneously, at this point, master control borad respectively to aobvious control plate,
Alternating temperature display board and refrigeration lamp control panel etc. are polled, and then master control borad obtains aobvious control plate, alternating temperature display board and refrigeration lamp control
The current state of making sheet, master control borad is once broadcasted after end of polling(EOP) so that multiple slave modules obtain current system shape
State, and terminate this communication cycle.
In conclusion the communication means of the household electrical appliance proposed according to embodiments of the present invention, by changing in system
When to multiple slave modules send broadcast message and to multiple slave modules send triggering message, receive multiple slave modules
In at least one slave module feedback feedback message.The communication means of the embodiment of the present invention is not promoting production cost as a result,
Under the premise of, the group-net communication between the more slaves of single host is realized, while construct the event mode communication of each intermodule, it is maximum
Degree ensure that communication efficiency.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature right over second feature or oblique upper or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments or examples described in this specification and the feature of different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (14)
1. a kind of communication system of household electrical appliance, which is characterized in that including：
Multiple slave modules, wherein, each slave module has communication interface, and the communication interface has receiving terminal and hair
Sending end；
Host module, wherein, the host module has communication interface, and the communication interface has receiving terminal and transmitting terminal, institute
The receiving terminal stated in the communication interface of multiple slave modules is connected with the transmitting terminal in the communication interface of the host module, institute
The transmitting terminal stated in the communication interface of multiple slave modules is connected with the receiving terminal in the communication interface of the host module,
In,
The host module, for sending broadcast message and to institute to the multiple slave module when system changes
It states multiple slave modules and sends triggering message, and receive the feedback of at least one slave module feedback in the multiple slave module
Message.
2. the communication system of household electrical appliance as described in claim 1, which is characterized in that the host module is additionally operable to receive
The broadcast request message that slave module is sent, and broadcast is sent to the multiple slave module according to the broadcast request message and is disappeared
Breath.
3. the communication system of household electrical appliance as described in claim 1, which is characterized in that the host module is additionally operable to connecing
After receiving the feedback message, judge whether the system mode changes, if there is a change then to it is the multiple from
Machine module sends broadcast message.
4. the communication system of household electrical appliance as described in claim 1, which is characterized in that when the host module receives simultaneously
During the feedback message that multiple slave modules are sent, the host module is additionally operable to be polled the multiple slave module.
5. the communication system of household electrical appliance as claimed in claim 2, which is characterized in that the slave module is additionally operable in institute
When stating slave module and powering on, broadcast request message is sent to the host module.
6. the communication system of household electrical appliance as described in claim 1, which is characterized in that the slave module is additionally operable to connecing
Receive it is described triggering message after, judge whether the oneself state of the slave module changes, if there is a change, then to
The host module sends feedback message.
7. such as the communication system of claim 1-6 any one of them household electrical appliance, which is characterized in that the communication interface is logical
With asynchronous receiving-transmitting transmitter UART interface, the UART interface includes：
First resistor, the first end of the first resistor are connected with the transmitting terminal of the UART interface；
Second resistance, the first end of the second resistance are connected with the receiving terminal of the UART interface；
3rd resistor, the first end of the 3rd resistor are connected with the second end of the first resistor, and the of the 3rd resistor
Two ends are connected with the host module or slave module；
4th resistance, the first end of the 4th resistance are connected with the second end of the second resistance, and the of the 4th resistance
Two ends are connected with the host module or slave module；
First clamp diode, first clamp diode are connected with the second end of the first resistor；
Second clamp diode, second clamp diode are connected with the second end of the second resistance；
Capacitance, the first end of the capacitance are connected with the second end of the second resistance, the second end ground connection of the capacitance；
5th resistance, the first end of the 5th resistance are connected with the second end of the second resistance, and the of the 5th resistance
Two ends are connected with power supply.
8. a kind of household electrical appliance, which is characterized in that include the communication of the household electrical appliance according to any one of claim 1-7
System.
9. a kind of communication means of household electrical appliance, which is characterized in that household electrical appliance have multiple slave modules and host module, institute
The receiving terminal stated in the communication interface of multiple slave modules is connected with the transmitting terminal in the communication interface of the host module, institute
The transmitting terminal stated in the communication interface of multiple slave modules is connected with the receiving terminal in the communication interface of the host module, institute
Communication means is stated to include the following steps：
The host module sends to the multiple slave module when system changes and broadcasts the message；
The host module also sends triggering message to the multiple slave module, and receives in the multiple slave module at least
The feedback message of one slave module feedback.
10. the communication means of household electrical appliance as claimed in claim 9, which is characterized in that further include：
The host module also receives the broadcast request message of slave module transmission, and according to the broadcast request message to described
Multiple slave modules send broadcast message.
11. the communication means of household electrical appliance as claimed in claim 9, which is characterized in that further include：
The host module judges whether the system mode changes after the feedback message is received, if hair
Changing then sends to the multiple slave module and broadcasts the message.
12. the communication means of household electrical appliance as claimed in claim 9, which is characterized in that further include：
When the host module receives the feedback message that multiple slave modules are sent simultaneously, the host module is also to described
Multiple slave modules are polled.
13. the communication means of household electrical appliance as claimed in claim 9, which is characterized in that further include：
When the slave module powers on, the slave module sends broadcast request message to the host module.
14. the communication means of household electrical appliance as claimed in claim 9, which is characterized in that further include：
The slave module judges whether the oneself state of the slave module becomes after the triggering message is received
Change, if there is a change, then send feedback message to the host module.
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| CN113242169A (en) * | 2021-05-10 | 2021-08-10 | 广东拓斯达科技股份有限公司 | Multi-slave data updating method, system, equipment and storage medium |
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