CN114187753A - Data transmission device, method, control device and electrical equipment - Google Patents
Data transmission device, method, control device and electrical equipment Download PDFInfo
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- CN114187753A CN114187753A CN202111411223.3A CN202111411223A CN114187753A CN 114187753 A CN114187753 A CN 114187753A CN 202111411223 A CN202111411223 A CN 202111411223A CN 114187753 A CN114187753 A CN 114187753A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000006854 communication Effects 0.000 claims abstract description 81
- 238000004891 communication Methods 0.000 claims abstract description 77
- 238000002955 isolation Methods 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/40—Remote control systems using repeaters, converters, gateways
Abstract
The application relates to a data transmission device, a data transmission method, a control device and electrical equipment. The data which needs to be transmitted by the data transmitting end can be converted into communication data in a specific form which does not cause electromagnetic interference by the transmitting device and the receiving device in the data transmission device, then the communication data is transmitted in a non-contact form, and finally the communication data in the specific form is converted into communication data which can be identified by the data receiving end, so that the conducted interference in the wired transmission process is avoided in a non-contact form, and the radiation interference in the traditional wireless transmission process is avoided. Moreover, compared with the scheme adopting optical fiber transmission, the scheme of the application has lower cost.
Description
Technical Field
The present application relates to the field of data transmission technologies, and in particular, to a data transmission device, a data transmission method, a control device, and an electrical apparatus.
Background
Due to the existence of the inverter compressor and the inverter fan in the air conditioner, EMC (Electromagnetic Compatibility) rectification is always an industry difficulty. Particularly for some special air conditioners, the requirement on electromagnetic compatibility is stricter.
In many electromagnetic compatibility projects, conducted interference is always the key point of rectification, and particularly conducted interference of a variable frequency driving board in an air conditioner to a control mainboard is caused. That is, because the frequency conversion drive board will carry out data communication with the control mainboard, therefore the electromagnetic interference that the frequency conversion drive board produced will probably be in the conduction of communication line income control mainboard. In order to solve the problem of conducted interference, conventional solutions include wireless communication or optical fiber communication, however, although the problem of conducted interference can be solved by using wireless communication, the problem of radiated interference is increased, and the use of optical fiber communication increases the cost of the machine set. Therefore, a solution that can solve the conducted interference and has low cost is needed.
Disclosure of Invention
The application provides a data transmission device, a data transmission method, a control device and electrical equipment, and aims to solve the problem that a scheme for solving conducted interference at low cost is lacked in the prior art.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, an embodiment of the present application provides a data transmission apparatus, which includes: the device comprises an isolation device, a sending device and a receiving device, wherein the sending device and the receiving device are arranged in the isolation device;
the sending device and the receiving device establish wireless physical connection;
the transmitting device is used for transmitting communication data in a specific form to the receiving device based on a control signal generated by the data transmitting end; the data sending end generates different control signals according to different communication data to be transmitted, and the communication data in a specific form does not cause electromagnetic interference;
the receiving device is used for acquiring the communication data in the specific form and converting the communication data in the specific form into communication data which can be identified by a data receiving end;
the isolating device is used for realizing internal and external isolation.
Optionally, the sending device includes a light sending device, the receiving device includes a light receiving device, and the communication data in the specific form is communication data in the form of illumination intensity.
Optionally, the light receiving device includes a photoresistor.
Optionally, the sending device includes a sound sending device, the receiving device includes a sound receiving device, and the communication data in the specific form is communication data in a sound intensity form.
Optionally, the isolation device is made of an insulating material.
In a second aspect, an embodiment of the present application further provides a control device for an electrical apparatus, including: a data transmitting end, a data receiving end and a data transmission device according to any one of the first aspect.
Optionally, the data sending end is connected to the sending apparatus through a wire, and the data receiving end is connected to the receiving apparatus through a wire.
Optionally, the control signal generated by the data transmitting terminal includes a current signal or a voltage signal.
In a third aspect, an embodiment of the present application further provides an electrical apparatus, which includes the control device of the electrical apparatus according to any one of the second aspects.
Optionally, the electrical device comprises an air conditioner.
In a fourth aspect, an embodiment of the present application further provides a data transmission method, which is applied to the electrical apparatus in any one of the third aspects, where the method includes:
the data sending end generates and outputs a corresponding control signal according to the communication data to be transmitted;
the transmitting device transmits communication data in a specific form to the receiving device based on the control signal;
the receiving device acquires the communication data in the specific form and converts the communication data in the specific form into communication data which can be identified by a data receiving end;
and the data receiving end receives the identifiable communication data.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
in the technical scheme provided by the embodiment of the application, through the sending device and the receiving device in the data transmission device, data needing to be transmitted by the data sending end can be converted into communication data in a specific form which does not cause electromagnetic interference, then the communication data is transmitted in a non-contact form, and finally the communication data in the specific form is converted into communication data which can be identified by the data receiving end, so that the conduction interference in a wired transmission process is avoided in a non-contact form, the radiation interference in a traditional wireless transmission process is avoided, and compared with the adoption of optical fiber transmission, the cost is lower.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application;
fig. 3 is a schematic diagram of a data transmission flow of a data transmitting end;
fig. 4 is a schematic diagram of a data receiving process at a data receiving end.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
In order to solve the problem of conducted interference, the application provides a data transmission device, an application scene/device and an application method of the device. The details of the embodiment are described below by way of examples.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of a data transmission device according to an embodiment of the present application. As shown in fig. 1, the data transmission device of the present embodiment includes: the isolation device and the sending device and the receiving device are arranged in the isolation device;
the wireless physical connection is established between the sending device and the receiving device;
the transmitting device is used for transmitting communication data in a specific form to the receiving device based on the control signal generated by the data transmitting end; the data sending end generates different control signals according to different communication data to be transmitted, and the communication data in a specific form does not cause electromagnetic interference;
the receiving device is used for acquiring the communication data in a specific form and converting the communication data in the specific form into communication data which can be identified by the data receiving end;
the isolating device is used for realizing internal and external isolation.
Specifically, the wireless physical connection mode between the transmitting device and the receiving device is different from the traditional connection mode of a conducting wire (power line/communication line), and the two devices are not directly connected through a line but can exchange physical information. Specific forms thereof are exemplified below.
Based on the above, the data sending end generates different control signals according to different communication data to be transmitted, and then the sending device sends the communication data in a specific form (non-contact form) corresponding to the control signal generated by the data sending end to the receiving device after acquiring the control signal; after receiving the communication data sent by the sending device, the receiving device converts the communication data into communication data which can be identified by the data receiving end, so that one-time data transmission is realized. Since the communication process between the transmitting device and the receiving device is carried out in a contactless (wireless) manner, conducted interference in a wired transmission process is avoided. Moreover, the communication data in the specific form does not cause electromagnetic interference, so that radiation interference is avoided. Meanwhile, optical fiber communication is not needed, so that the cost can be saved.
Wherein the specific form may be illumination intensity or sound intensity, etc.
For example, in some embodiments, the sending device comprises a light sending device, the receiving device comprises a light receiving device, and the specific form of communication data is communication data in the form of illumination intensity.
Specifically, in this embodiment, different communication data are represented by illumination with different intensities, so that transmission of the communication data is realized. That is, the data sending end generates different control signals according to different communication data to be transmitted, so as to control the sending device to send light with different illumination intensities, and then, after the receiving device receives the light sent by the sending device, the photosensitive element therein generates corresponding changes (taking the receiving device including a photosensitive resistor as an example, the resistance value of the photosensitive resistor will be different along with the different illumination intensities), so that the receiving device can output analog quantity signals such as different currents or voltages, and the data receiving end can be used for subsequent processing after acquiring the analog quantity signals output by the receiving device, for example, converting the analog quantity signals into digital quantity signals through an AD conversion function. In the process, the communication data is firstly converted into the illumination intensity and then transmitted, so that the conduction interference when the wire is directly transmitted can be avoided.
In other embodiments, the transmitting device comprises a voice transmitting device and the receiving device comprises a voice receiving device, and the specific form of communication data is in the form of voice intensity. When the communication data is transmitted based on the sound intensity, the principle is the same as the illumination intensity, and the detailed process is not described in detail.
Of course, it should be understood that, besides the communication data transmission in the form of illumination intensity and sound intensity, other physical analog quantities can be used, the principle is similar, and the description is not repeated here.
In addition, it should be noted that, during the data transmission process, the isolation device realizes the internal and external isolation, so as to avoid the data loss during the transmission process and avoid the interference of the external environment to the transmission process. For example, when the light transmitting device emits light, the isolating device avoids the dissipation of internal light, and also avoids the receiving device from receiving light of the external environment, thereby ensuring that no error occurs in transmitted data. Furthermore, the isolating device is preferably made of an insulating material, so that the isolating device has a better protection effect and avoids internal devices from being damaged.
On the basis of the above scheme, an embodiment of the present application further provides a control device for an electrical apparatus, which includes a data sending end, a data receiving end, and the data transmission device.
The data transmission device realizes data transmission between the data sending end and the data receiving end, thereby avoiding conducted interference in the communication process.
Further, in some embodiments, the data sending end is connected to the sending device through a wire, and the data receiving end is connected to the receiving device through a wire. And, the control signal generated at the data transmitting terminal includes a current signal or a voltage signal, etc. Due to the arrangement, the data transmission device achieves the purpose of isolating conducted interference, and therefore, the data transmitting end and the transmitting device and the data receiving end and the receiving device can be directly connected through the wires. Of course, according to actual needs, wireless connections can also be adopted between the data sending end and the sending device and between the data receiving end and the receiving device, and have no substantial influence on the specific implementation of the scheme.
In addition, on the basis of the above scheme, the embodiment of the present application further provides an electrical apparatus, which may be an air conditioner, for example, and includes the control device of the electrical apparatus. Therefore, the control device is applied to the electrical equipment, and the conducted interference can be avoided in the control process of the electrical equipment.
It should be noted that, taking an air conditioner as an example, a data sending end in the control device may be a control motherboard or a variable frequency drive board, and similarly, a data receiving end may be a variable frequency drive board or a control motherboard, depending on an actual communication process.
In addition, on the basis of the above scheme, as shown in fig. 2, an embodiment of the present application further provides a data transmission method, where the method is applied to the above electrical device. The method at least comprises the following steps:
s101: the data sending end generates and outputs a corresponding control signal according to the communication data to be transmitted;
s102: the sending device sends communication data in a specific form to the receiving device based on the control signal; the receiving device acquires the communication data in the specific form and converts the communication data in the specific form into communication data which can be identified by a data receiving end;
s104: and the data receiving end receives the identifiable communication data.
Through the scheme, data transmission with conducted interference isolated at one time is achieved.
For better understanding, a specific implementation process of the data transmitting end and the data receiving end in the data communication process is described in detail with reference to the accompanying drawings by taking an example that the data transmission device transmits data based on the form of illumination intensity.
First, referring to fig. 3, fig. 3 is a schematic diagram of a data transmission flow of a data transmitting end. As shown in fig. 4, the data sending end first selects data to be sent, and then outputs a voltage or a current (i.e., the control signal according to the above embodiment) with a corresponding magnitude according to the data value; and then, calculating the output time of the current output voltage or current, judging whether the data retention time is reached, if the data retention time is not reached, keeping the current voltage or current to continue outputting, and if the data retention time is reached, outputting the next data. The data sending end continuously repeats the steps, and then data can be continuously sent.
Secondly, after the data transmission device receives the voltage or current signal, the light ray transmitting device therein emits light with corresponding intensity, and the resistance of the photosensitive element (photoresistor) of the light ray receiving device changes when the photosensitive element is irradiated by different light intensities, so that the output voltage (namely, the communication data recognizable by the data receiving end in the above embodiment) changes.
Next, referring to fig. 4, fig. 4 is a schematic diagram of a data receiving process at the data receiving end. As shown in fig. 4, the data receiving end reads the voltages at the two ends of the photosensitive component, and performs AD conversion to obtain an AD value; then, judging whether the AD value is kept in a certain interval for more than data holding time according to an AD data table (the AD data table is pre-stored in a data receiving end, the effective AD value is divided into a plurality of intervals, and each interval corresponds to different data); if the data retention time is not reached, the current AD value is considered invalid, and the AD value is obtained again; if the data retention time is up, the current AD value is considered to be effective, data corresponding to the current effective AD value is obtained according to the AD data table at the moment, whether the data is idle data or not is judged, if the data is idle data, the current data sending end does not send data or a component fails is indicated, the communication result is ignored at the moment, and the last instruction action is continuously maintained; if the data is not idle data, the data is applied to the control operation, namely corresponding instructions (such as controlling the frequency conversion of the compressor) are executed according to the corresponding data. The idle data refers to the AD value range which is smaller than 2% of the maximum AD value and larger than 98% of the maximum AD value in the AD data table, data errors caused by component faults can be effectively avoided through the idle data, and the fault tolerance of communication is improved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. A data transmission apparatus, comprising: the device comprises an isolation device, a sending device and a receiving device, wherein the sending device and the receiving device are arranged in the isolation device;
the sending device and the receiving device establish wireless physical connection;
the transmitting device is used for transmitting communication data in a specific form to the receiving device based on a control signal generated by the data transmitting end; the data sending end generates different control signals according to different communication data to be transmitted, and the communication data in a specific form does not cause electromagnetic interference;
the receiving device is used for acquiring the communication data in the specific form and converting the communication data in the specific form into communication data which can be identified by a data receiving end;
the isolating device is used for realizing internal and external isolation.
2. The data transmission device of claim 1, wherein the sending device comprises a light sending device, the receiving device comprises a light receiving device, and the specific form of communication data is communication data in the form of illumination intensity.
3. The data transmission device of claim 2, wherein the light receiving device comprises a photoresistor.
4. The data transmission device of claim 1, wherein the sending device comprises a voice sending device, the receiving device comprises a voice receiving device, and the specific form of communication data is in the form of voice intensity.
5. The data transmission device of claim 1, wherein the isolation device is made of an insulating material.
6. A control device of an electric appliance, characterized by comprising: data transmitting end, data receiving end and data transmission apparatus according to any one of claims 1-5.
7. The control device of electrical equipment according to claim 6, wherein the data transmitting terminal is connected to the transmitting device by a wire, and the data receiving terminal is connected to the receiving device by a wire.
8. The control device of the electrical equipment, according to claim 7, wherein the control signal generated by the data transmitting terminal comprises a current signal or a voltage signal.
9. An electrical apparatus, characterized in that it comprises control means of an electrical apparatus according to any one of claims 6-8.
10. The electrical apparatus of claim 9, wherein the electrical apparatus comprises an air conditioner.
11. A data transmission method applied to the electric appliance device according to claim 9 or 10, the method comprising:
the data sending end generates and outputs a corresponding control signal according to the communication data to be transmitted;
the transmitting device transmits communication data in a specific form to the receiving device based on the control signal;
the receiving device acquires the communication data in the specific form and converts the communication data in the specific form into communication data which can be identified by a data receiving end;
and the data receiving end receives the identifiable communication data.
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