CN205091580U - Communication interface circuit and use its domestic appliance - Google Patents
Communication interface circuit and use its domestic appliance Download PDFInfo
- Publication number
- CN205091580U CN205091580U CN201520916889.8U CN201520916889U CN205091580U CN 205091580 U CN205091580 U CN 205091580U CN 201520916889 U CN201520916889 U CN 201520916889U CN 205091580 U CN205091580 U CN 205091580U
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- communication interface
- interface
- external communication
- interface circuit
- mux
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Abstract
The utility model discloses a communication interface circuit and use its domestic appliance, the embodiment of the utility model provides a through being connected to the multiple selector with different kinds of outside communication interface to only through drawing inside communication interface all the way, rely on controller control multiple selector to take turns the different outside communication interface of gating in order to realize automatic accordant connection to the interface of other equipment or network, from this, in the multiple different kinds of communication interface of external compatibility, the internal rigging only provides an interface to be connected, appears the mistake when having avoided carrying out product Assembly.
Description
Technical field
The utility model relates to circuit engineering field, is specifically related to a kind of communication interface circuit and applies its household electrical appliance.
Background technology
Prior art provides multiple different communication standard to meet different control needs for electromechanical equipment, such as, for the standard interface RS232 interface of point-to-point asynchronous transmission, be suitable for CAN (controller local area network, the ControllerAreaNetwork) bus interface and the RS485 interface that build manufactureing automation LAN.
The internal control circuit of the electromechanical equipment of different model usually only based on a certain transmitting-receiving carrying out control data in communication interface, receiving/send control command, and feedback states data.And when manufacturing corresponding circuit block, in order to improve compatibility, usually the communication interface likely used can be set up in parallel on communication interface circuit.Again the internal communications interface that internal control circuit and corresponding needs use is connected when electromechanical equipment assembles.Such as, the equipment of different model may use RS232 interface and RS485 interface and CAN interface for the moment, the RS232 interface circuit that chain intermittent weld three is different on communication interface circuit, RS485 interface circuit and CAN interface circuit, thus, communication interface circuit has simultaneously the internal communications interface that three can connect internal control circuit.Be easy to connection error when assembling electromechanical equipment, the equipment assembled can not be used.
Utility model content
In view of this, the utility model provides a kind of communication interface circuit and applies its household electrical appliance, avoids occurring mistake when carrying out Product Assembly while the multiple different communication interface of compatibility.
First aspect, the utility model provides a kind of communication interface circuit, comprising:
Internal communications interface;
Multiple external communication interface;
MUX, is connected between described internal communications interface and described multiple external communication interface, for one of external communication interface multiple described in gating and described internal communications interface;
Controller, is connected with described internal communications interface, and is connected to the control end of described MUX, selects to be switched to the external communication interface that can receive tentation data for controlling described MUX.
Preferably, described multiple external communication interface is respectively different classes of communication interface.
Preferably, described multiple external communication interface is respectively the communication interface based on distinct communication standards.
Preferably, described communication interface circuit comprises three external communication interface, and described three external communication interface are respectively RS485 interface, CAN interface and RS232 interface.
Preferably, described tentation data is the data meeting communication standard corresponding to current external communication interface.
Preferably, described controller for controlling described MUX gate internal communication interface and different external communication interface in turn, until described controller receives tentation data by the external communication interface of current gating in the given time.
Second aspect, provides a kind of household electrical appliance, comprising:
Communication interface circuit as above;
Internal control circuit, for carrying out data transmit-receive by described communication interface circuit.
Preferably, described household electrical appliance are air-conditioning.
The utility model embodiment is by being connected to MUX by dissimilar external communication interface, and be drawn out to internal communications interface by means of only a road, rely on controller control MUX in turn the different external communication interface of gating and internal communications interface to realize the automatic interface selecting to be connected to miscellaneous equipment or network, thus, while the communication interface of external compatible number of different types, mounted inside only provides an interface to connect, and avoids when carrying out Product Assembly and occurs mistake.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the utility model embodiment, above-mentioned and other objects, features and advantages of the present utility model will be more clear, in the accompanying drawings:
Fig. 1 is the schematic diagram of the household electrical appliance of the utility model embodiment;
Fig. 2 is the block diagram of the communication interface circuit of the utility model embodiment;
Fig. 3 is the control flow chart of the controller of the communication interface circuit of the utility model embodiment.
Embodiment
Based on embodiment, the utility model is described below, but the utility model is not restricted to these embodiments.In hereafter details of the present utility model being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the utility model completely for a person skilled in the art yet.In order to avoid obscuring essence of the present utility model, known method, process, flow process, element and circuit do not describe in detail.
In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.
Meanwhile, should be appreciated that in the following description, " circuit " refers to the galvanic circle connected and composed by electrical connection or electromagnetism by least one element or electronic circuit.When " being connected to " another element when claiming element or circuit or claiming element/circuit " to be connected to " between two nodes, it can be directly couple or be connected to another element or can there is intermediary element, the connection between element can be physically, in logic or its combine.On the contrary, " be directly coupled to " when claiming element or " being directly connected to " another element time, mean that both do not exist intermediary element.
Unless the context clearly requires otherwise, similar words such as " comprising ", " comprising " otherwise in whole instructions and claims should be interpreted as the implication that comprises instead of exclusive or exhaustive implication; That is, be the implication of " including but not limited to ".
In description of the present utility model, it is to be appreciated that term " inside ", " outside " etc. are only for describing object, and instruction or hint relative importance can not be interpreted as.In addition, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
Fig. 1 is the schematic diagram of the household electrical appliance of the utility model embodiment.
Be described for air-conditioning in the utility model embodiment, but those skilled in the art's easy understand, the utility model embodiment also go for various other carry out based on industrial bus or network interface the household electrical appliance that control, such as, TV, washing machine, humidifier, air purifier, water heater etc.
As shown in Figure 1, air-conditioning 1 comprises internal control circuit 11 and communication interface circuit 12.Described communication interface circuit 12 is connected with the communications cable or communication component based on external communication interface, and and then is connected to host computer 2.Described host computer 2 can be other household electrical appliance possessing certain controlling functions, also can be intelligent appliance gateway.The internal control circuit 11 of air-conditioning 1 carries out data transmit-receive, to receive steering order and feedback status information by communication interface circuit 12 and described host computer 2.
Fig. 2 is the block diagram of the communication interface circuit of the utility model embodiment.
As shown in Figure 2, communication interface circuit 12 comprises internal communications interface 121, multiple external communication interface 122 (being three in the present embodiment), MUX 123 and controller 124.
Internal communications interface 121 is adaptive with internal control circuit 11, and for being connected with internal control circuit 11, it can be any standard or off-gauge signal transmission interface.
In the present embodiment, three external communication interface 121 are dissimilar communication interface.In the present embodiment, dissimilar communication interface can be respectively based on the communication interface of distinct communication standards, and such as, three external communication interface can be respectively RS485 interface, CAN interface and RS232 interface.Certainly, but one of ordinary skill in the art will readily recognize that dissimilar communication interface also can be based on the different interface of same communication standard specification.
MUX 123 is connected between described internal communications interface 121 and described multiple external communication interface 122, for one of internal communications interface described in gating 121 and described external communication interface 122.MUX 123 has control end ctr, and according to the control signal being applied to control end, one of external communication interface can be communicated with described internal communications interface by MUX 123.In order to make between internal and external communication interface can two-way communication, described MUX 123 can be set to two-way gating circuit.Should be understood that if only need one-way communication between internal communications interface and external communication interface, then MUX 123 can be set to unidirectional gating circuit.
Controller 124 is connected with described internal communications interface 1, and is connected to the control end ctr of MUX 123, selects to be switched to the external communication interface that can receive tentation data for controlling described MUX 123.
Particularly, controller 124 is switched to the external communication interface that can receive tentation data by polling mode, it controls MUX 123 gate internal communication interface and different external communication interface in turn, until described controller receives tentation data by current external communication interface in the given time.
Fig. 3 is the control flow chart of the controller of the communication interface circuit of the utility model embodiment.
As shown in Figure 3, described control flow comprises:
Step S310, control MUX gate internal communication interface 121 and current external communication interface 122.
Whether step S320, judgement receive tentation data in the given time, if fail to receive, then perform step S330, if received, perform step S340.
Described tentation data for meeting the data of communications standard specification corresponding to described current external communication interface, such as, can have the packet etc. of predetermined protocol form.Described controller can independently be resolved the data received, to judge that whether it is for tentation data.Described controller also can, by the data retransmission received to the internal control circuit be connected with interface circuit, judge whether to receive tentation data according to the analysis result of internal control circuit.
Step S330, using next external communication interface as current external communication interface, perform step S310.
Step S340, maintenance gate internal communication interface and current external communication interface.
Thus, can determine the external communication interface externally with signal connection fast by polling mode, this external communication interface of automatic switching on and unique internal communications interface, manually need not arrange, avoid loading error thus.
The utility model embodiment is by being connected to MUX by dissimilar external communication interface, and be drawn out to internal communications interface by means of only a road, the dependence controller control MUX in turn different external communication interface of gating is connected to the interface of miscellaneous equipment or network to realize selection automatically, thus, while the communication interface of external compatible number of different types, mounted inside only provides an interface to connect, and avoids when carrying out Product Assembly and occurs mistake.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, to those skilled in the art, the utility model can have various change and change.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a communication interface circuit, is characterized in that, described communication interface circuit comprises:
Internal communications interface;
Multiple external communication interface;
MUX, is connected between described internal communications interface and described multiple external communication interface, for one of external communication interface multiple described in gating and described internal communications interface;
Controller, is connected with described internal communications interface, and is connected to the control end of described MUX, selects to be switched to the external communication interface that can receive tentation data for controlling described MUX.
2. communication interface circuit according to claim 1, is characterized in that, described multiple external communication interface is respectively different classes of communication interface.
3. communication interface circuit according to claim 1, is characterized in that, described multiple external communication interface is respectively the communication interface based on distinct communication standards.
4. communication interface circuit according to claim 3, is characterized in that, described communication interface circuit comprises three external communication interface, and described three external communication interface are respectively RS485 interface, CAN interface and RS232 interface.
5. communication interface circuit according to claim 1, it is characterized in that, described controller for controlling described MUX gate internal communication interface and different external communication interface in turn, until described controller receives tentation data by the external communication interface of current gating in the given time.
6. household electrical appliance, comprising:
Communication interface circuit according to any one of claim 1-5;
Internal control circuit, for carrying out data transmit-receive by described communication interface circuit.
7. household electrical appliance according to claim 6, is characterized in that, described household electrical appliance are air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916889.8U CN205091580U (en) | 2015-11-16 | 2015-11-16 | Communication interface circuit and use its domestic appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916889.8U CN205091580U (en) | 2015-11-16 | 2015-11-16 | Communication interface circuit and use its domestic appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205091580U true CN205091580U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520916889.8U Expired - Fee Related CN205091580U (en) | 2015-11-16 | 2015-11-16 | Communication interface circuit and use its domestic appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205091580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686368A (en) * | 2019-09-26 | 2020-01-14 | 珠海格力电器股份有限公司 | Communication control device, internal machine, external machine, temperature controller, communication method and air conditioner |
-
2015
- 2015-11-16 CN CN201520916889.8U patent/CN205091580U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686368A (en) * | 2019-09-26 | 2020-01-14 | 珠海格力电器股份有限公司 | Communication control device, internal machine, external machine, temperature controller, communication method and air conditioner |
| CN110686368B (en) * | 2019-09-26 | 2021-03-23 | 珠海格力电器股份有限公司 | Communication control device, internal machine, external machine, temperature controller, communication method and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20211116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |