CN107101348B - Indoor and outdoor unit communication method and device of air conditioning multi-connected unit and air conditioning unit - Google Patents
Indoor and outdoor unit communication method and device of air conditioning multi-connected unit and air conditioning unit Download PDFInfo
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- CN107101348B CN107101348B CN201710188230.9A CN201710188230A CN107101348B CN 107101348 B CN107101348 B CN 107101348B CN 201710188230 A CN201710188230 A CN 201710188230A CN 107101348 B CN107101348 B CN 107101348B
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- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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Abstract
The invention discloses an indoor and outdoor unit communication method and device of an air conditioning multi-connected unit and the air conditioning unit, belonging to the technical field of air conditioners, wherein the air conditioning multi-connected unit comprises the following components: the air conditioner comprises an air conditioner outdoor unit, at least one Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein the air conditioner indoor units in each group are connected in series through a communication bus Homebus; the multiple groups of air conditioner indoor units are connected in series with at least one Homebus replacing device through Homebus and connected in series with an air conditioner outdoor unit through Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series through the Homebus and the Homebus conversion device, and are connected in parallel with the air conditioner outdoor units through the Homebus; the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units. The Homebus conversion device is added in the multi-connected air conditioner unit to simulate and forward communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be prolonged, and the communication stability can be improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an indoor unit and an outdoor unit communication method and device of an air conditioning multi-connected unit and an air conditioning unit.
Background
The multi-connected air conditioning unit comprises an indoor unit and an outdoor unit, wherein information communication is often performed between the indoor unit and the outdoor unit, such as the outdoor unit and the indoor unit of a multi-split air conditioning unit. Specifically, the number of single modules of the outdoor unit of the air conditioning multi-connected unit can be 32, and if four modules are assembled, the capacity of one set of outdoor unit can reach 128, and 128 indoor units can be connected.
From the development trend of the multi-split air conditioner, the number of outdoor unit sets is continuously increased, so that one outdoor unit set can be connected with more than 128 indoor units, and the more the connected indoor units are, the longer the distance between the outdoor unit and the indoor unit is; the outdoor unit and the indoor unit are communicated through a Homebus (communication bus), the Homebus bus uses differential signal communication, signal refraction interference is easy to occur during long-distance communication, and when the distance between the outdoor unit and the indoor unit in the multi-connected air conditioner unit is too long, signal attenuation of the Homebus communication is more serious, so that the communication stability of the indoor unit and the outdoor unit of the multi-connected air conditioner unit cannot be ensured.
Disclosure of Invention
In order to overcome the problems in the background art, the present disclosure provides an indoor and outdoor unit communication method and apparatus for a multi-connected air conditioning unit, and an air conditioning unit.
According to a first aspect of the embodiments of the present disclosure, there is provided an air conditioning multi-connected unit, including: the air conditioner comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein each group of air conditioner indoor units are connected in series through the communication bus Homebus;
the multiple groups of air conditioner indoor units are connected in series with at least one Homebus replacing device through the Homebus, and then are connected in series with the air conditioner outdoor unit through the Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series with the Homebus conversion device through the Homebus, and then are connected in parallel with the air conditioner outdoor unit through the Homebus;
the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units.
In one embodiment, the Homebus conversion apparatus includes: the device comprises a Homebus input end loop, an MCU control unit and a Homebus output end loop;
the Homebus input end loop, the MCU control unit and the Homebus output end loop are connected through the Homebus, and the MCU control unit is located between the Homebus input end loop and the Homebus output end loop.
In one embodiment, the MCU control unit receives communication data sent by the outdoor unit of the air conditioner through the Homebus input port loop, and sends the communication data to the connected indoor unit of the air conditioner through the Homebus output port loop;
and the MCU control unit receives response data of the connected air conditioner indoor unit through the Homebus output end loop, simulates the air conditioner indoor unit sending the response data, and then sends the response data to the air conditioner outdoor unit through the Homebus input end loop.
In one embodiment, the Homebus output loop is provided with an impedance matching resistor.
According to a second aspect of the embodiments of the present disclosure, there is provided a method for communicating indoor and outdoor units of an air conditioning multi-connected unit, the air conditioning multi-connected unit including: the air conditioner multi-unit comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein the air conditioner outdoor unit, the Homebus conversion device and the plurality of groups of air conditioner indoor units are connected through the communication bus Homebus, and after the air conditioner multi-unit is electrified, the method comprises the following steps:
the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit and simulates the air conditioner outdoor unit to send the broadcast data to the air conditioner indoor units in the multiple groups of air conditioner indoor units connected with the air conditioner outdoor unit;
the Homebus conversion device receives response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units;
and the Homebus conversion device simulates the air conditioner indoor unit sending the response data according to the response data and responds to the air conditioner outdoor unit.
In one embodiment, the broadcast data is used to inquire identification information of an air conditioner indoor unit connected to the air conditioner outdoor unit.
In one embodiment, the Homebus conversion device receives response data of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units, and the response data comprises:
the Homebus conversion device determines whether response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, wherein the response data comprise identification information of the air-conditioning indoor units which send the response data;
when response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, analyzing the response data and storing identification information of the air-conditioning indoor units which send the response data;
when the response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are not received, determining whether the time for sending the broadcast data exceeds a preset time length;
when the time for sending the broadcast data exceeds the preset time, the broadcast data is sent to the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units again;
and when the time for sending the broadcast data does not exceed the preset time, waiting for the response of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units to the broadcast data.
According to a third aspect of the embodiments of the present disclosure, there is provided a communication bus Homebus control device, including:
the Homebus input end loop is configured to receive broadcast data sent by the air conditioner outdoor unit;
the MCU control unit is configured to simulate the air conditioner outdoor unit to send the broadcast data to the air conditioner indoor units in the plurality of groups of air conditioner indoor units connected with the MCU control unit;
the Homebus output end loop is configured to receive response data of the air conditioner indoor units in the plurality of groups of air conditioner indoor units;
and the MCU control unit is configured to simulate the air conditioner indoor unit sending the response data according to the response data and respond to the air conditioner outdoor unit.
In one embodiment, the broadcast data is used to inquire identification information of an air conditioner indoor unit connected to the air conditioner outdoor unit.
In one embodiment, the MCU control unit includes:
the first judging subunit is configured to determine whether response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units are received, wherein the response data comprise identification information of the air conditioner indoor units which send the response data;
the data analysis subunit is configured to analyze the response data and store the identification information of the air-conditioning indoor unit sending the response data when receiving the response data of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units;
a second determining subunit configured to determine whether the time for transmitting the broadcast data exceeds a predetermined time period when the response data of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units is not received;
a first processing subunit configured to retransmit the broadcast data to an air-conditioning indoor unit of the plurality of groups of air-conditioning indoor units when a time for transmitting the broadcast data exceeds the predetermined time length;
a second processing subunit configured to wait for a response of an air conditioning indoor unit of the plurality of groups of air conditioning indoor units to the broadcast data when the time for transmitting the broadcast data does not exceed the predetermined time length.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the technical scheme provides an indoor and outdoor unit communication method and device of an air-conditioning multi-connected unit and the air-conditioning unit, wherein the air-conditioning multi-connected unit comprises the following steps: the air conditioner comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein each group of air conditioner indoor units are connected in series through the communication bus Homebus; the multiple groups of air conditioner indoor units are connected in series with at least one Homebus replacing device through Homebus, and then are connected in series with the air conditioner outdoor unit through Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series through the Homebus and the Homebus conversion device, and then are connected in parallel with the air conditioner outdoor units through the Homebus; the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units. The Homebus conversion device is added in the multi-connected air conditioner unit, and the Homebus conversion device is used for simulating and forwarding communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be increased, and the communication stability between the outdoor unit of the air conditioner and the indoor unit of the air conditioner is ensured under the condition of long distance. In addition, the technical scheme is more flexible in a connection mode of adding the Homebus conversion device in the multi-connected air-conditioning unit, and is convenient for installation of engineering projects of the multi-connected air-conditioning unit.
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 disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1A is a schematic structural diagram of an air conditioning multi-connected unit according to an exemplary embodiment;
fig. 1B is a schematic structural diagram of an air conditioning multi-connected unit according to an exemplary embodiment;
fig. 1C is a schematic structural diagram of an air conditioning multi-connected unit according to an exemplary embodiment;
fig. 1D is a schematic structural diagram of an air conditioning multi-connected unit according to an exemplary embodiment;
FIG. 2 is a schematic block diagram of a Homebus conversion device provided in accordance with an exemplary embodiment;
fig. 3 is a flowchart illustrating a method for communicating between an indoor unit and an outdoor unit of a multi-connected air conditioning unit according to an exemplary embodiment;
fig. 4 is a flowchart illustrating a method for communicating between an indoor unit and an outdoor unit of a multi-connected air conditioning unit according to an exemplary embodiment;
fig. 5 is a schematic structural diagram of a communication device for indoor and outdoor units of a multi-connected air conditioning unit according to an exemplary embodiment;
fig. 6 is a schematic diagram of an apparatus structure of an MCU control unit according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
The embodiment of the invention provides an air-conditioning multi-connected unit, which is characterized by comprising the following components: the air conditioner comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein each group of air conditioner indoor units are connected in series through the communication bus Homebus; the multiple groups of air conditioner indoor units are connected in series with at least one Homebus replacing device through the Homebus, and then are connected in series with the air conditioner outdoor unit through the Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series with the Homebus conversion device through the Homebus, and then are connected in parallel with the air conditioner outdoor unit through the Homebus; the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units. The Homebus conversion device is added in the multi-connected air conditioner unit to simulate and forward communication data between the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the indoor unit and the outdoor unit of the multi-connected air conditioner unit can be increased.
Fig. 1A is a schematic structural diagram illustrating an air-conditioning multi-connected unit according to an exemplary embodiment, and as shown in fig. 1A, the air-conditioning multi-connected unit includes: the system comprises an air conditioner outdoor unit 101, at least one communication bus Homebus conversion device 102 and a plurality of groups of air conditioner indoor units 103, wherein each group of air conditioner indoor units 103 are connected in series through the communication bus Homebus;
the multiple groups of air conditioner indoor units 103 are connected in series with at least one Homebus changer 102 through the Homebus, and then are connected in series with the air conditioner outdoor unit 101 through the Homebus;
the Homebus conversion device 102 is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units.
Here, in an application scenario, an outdoor unit of a multi-connected air conditioning unit is installed on the roof of a building a, a terminal indoor unit of a plurality of groups of indoor units of air conditioners is installed on the floor of a building B, a distance between the outdoor unit of the air conditioners and a communication line of the indoor unit is long, in order to ensure stability of communication signals of the indoor unit and the outdoor unit, a Homebus conversion device may be added to the multi-connected air conditioning unit, and the Homebus conversion device may simulate the indoor unit and the outdoor unit of the air conditioners to forward data information before each other, so that a communication distance between the outdoor unit of the air conditioners and the terminal indoor unit of the air conditioners may be extended, and the installation situation of the multi-. The multi-connected air conditioning unit shown in fig. 1B includes an outdoor air conditioning unit a, an indoor air conditioning unit B, an indoor air conditioning unit C and a Homebus conversion device D, where the indoor air conditioning unit B includes three indoor air conditioning units, i.e., an indoor unit 1, an indoor unit 2 and an indoor unit 3, and the indoor air conditioning unit C includes four indoor air conditioning units, i.e., an indoor unit N-3, an indoor unit N-2, an indoor unit N-1 and an indoor unit N. The indoor unit group B and the indoor unit group C are connected in series through a communication bus homebus, the outdoor unit A and the indoor unit 1 are connected in series through homebus, the indoor unit groups B and C are connected through a homebus conversion device D, and the homebus conversion device D and the indoor unit 3 are connected in series through homebus with the indoor unit N-3.
Based on the structure of the multi-connected air conditioner unit, when the outdoor unit A sends communication data to the plurality of indoor units connected with the outdoor unit A, if the communication distance between the multi-connected air conditioner units is long, the information can be simulated and forwarded through the homebus conversion device D connected in the multi-connected air conditioner unit, and therefore the communication distance between the outdoor unit and the indoor units and the stability of communication signals are prolonged.
Fig. 1C is a schematic structural diagram illustrating an air-conditioning multi-connected unit according to an exemplary embodiment, and as shown in fig. 1C, the air-conditioning multi-connected unit includes: the system comprises an air conditioner outdoor unit 101, at least one communication bus Homebus conversion device 102 and a plurality of groups of air conditioner indoor units 103, wherein each group of air conditioner indoor units 103 are connected in series through the communication bus Homebus;
each group of air conditioner indoor units 103 corresponds to one Homebus conversion device 102, are connected in series through the Homebus and the Homebus conversion device 102, and then are connected in parallel through the Homebus and an air conditioner outdoor unit 101;
the Homebus conversion device 102 is configured to simulate and forward data transmitted between the outdoor air conditioning unit 101 and the indoor air conditioning units 103 in each group of indoor air conditioning units.
Here, in an application scenario, when multiple groups of air conditioning indoor units connected by one set of multi-connected air conditioning unit belong to multiple floors, for example, one group of air conditioning indoor units is located on a floor a, and another group of air conditioning indoor units is located on a floor B, a Homebus conversion device may be added on each floor, two groups of air conditioning indoor units are connected in parallel, and then the air conditioning outdoor units are connected, as shown in fig. 1D, to simulate and forward communication data between the air conditioning indoor units and the air conditioning outdoor units through the Homebus conversion device, so as to ensure stability of communication signals between the air conditioning indoor units and the end indoor units in each group of indoor units. The multi-connected air conditioning unit shown in fig. 1D includes an outdoor air conditioning unit a, an indoor air conditioning unit B, an C, Homebus switching device D, and a Homebus switching device E, where the indoor air conditioning unit B includes three indoor air conditioning units, i.e., an indoor unit 1, an indoor unit 2, and an indoor unit 3, and the indoor air conditioning unit C includes four indoor air conditioning units, i.e., an indoor unit N-3, an indoor unit N-2, an indoor unit N-1, and an indoor unit N. The indoor units between the indoor unit B and the indoor unit C are connected in series through a communication bus Homebus and then are respectively connected with Homebus conversion devices D and E, and then the two connected indoor units are connected in parallel with the Homebus conversion devices and then are connected with the outdoor unit A through a Homebus line.
Based on the structure of the multi-connected air conditioner unit, when the outdoor unit A sends communication data to the plurality of indoor units connected with the outdoor unit A, if the communication distance between the multi-connected air conditioner units is long, the information can be simulated and forwarded through the homebus conversion device D connected in the multi-connected air conditioner unit, and therefore the communication distance between the outdoor unit and the indoor units and the stability of communication signals are prolonged.
Fig. 2 exemplarily shows an apparatus block diagram of a Homebus conversion apparatus, referring to fig. 2, in one embodiment, the Homebus conversion apparatus includes: a Homebus input end loop 201, an MCU control unit 202 and a Homebus output end loop 203;
the Homebus input end loop 201, the MCU control unit 202 and the Homebus output end loop 203 are connected through the Homebus, and the MCU control unit 202 is located between the Homebus input end loop 201 and the Homebus output end loop 203.
In one embodiment, the MCU control unit 202 receives communication data sent by the outdoor unit of the air conditioner through the Homebus input port loop 201, and sends the communication data to the connected indoor unit of the air conditioner through the Homebus output port loop 203;
the MCU control unit 202 receives response data of the connected air conditioner indoor units through the Homebus output end loop 203, simulates the air conditioner indoor units sending the response data, and then sends the response data to the air conditioner outdoor units through the Homebus input end loop 201.
In one embodiment, the Homebus output loop 203 has an impedance matching resistor. The impedance matching resistor can realize the expansion of the communication distance of the air conditioning multi-connected unit, and the principle is as follows: when the communication line transmits high-speed signals, signal mutual interference and clutter can occur between the lines; the communication impedance matching resistor can reduce the interference of signals, thereby realizing the stability of the communication line of the air conditioning multi-connected unit and the distance expansion.
In summary, this technical scheme provides an air conditioner multi-connected unit, air conditioner multi-connected unit includes: the air conditioner comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein each group of air conditioner indoor units are connected in series through the communication bus Homebus; the multiple groups of air conditioner indoor units are connected in series with at least one Homebus replacing device through Homebus, and then are connected in series with the air conditioner outdoor unit through Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series through the Homebus and the Homebus conversion device, and then are connected in parallel with the air conditioner outdoor units through the Homebus; the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units. The Homebus conversion device is added in the multi-connected air conditioner unit, and the Homebus conversion device is used for simulating and forwarding communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be increased, and the communication stability between the outdoor unit of the air conditioner and the indoor unit of the air conditioner is ensured under the condition of long distance. In addition, the technical scheme is more flexible in a connection mode of adding the Homebus conversion device in the multi-connected air-conditioning unit, and is convenient for installation of engineering projects of the multi-connected air-conditioning unit.
Referring to fig. 3, the present invention provides a method for communication between indoor and outdoor units of a multi-connected air conditioning unit, the multi-connected air conditioning unit including: the air conditioner outdoor unit, the Homebus conversion device and the multiple groups of air conditioner indoor units are connected through the communication bus Homebus, the specific connection mode refers to the air conditioner multi-connected unit described above, and after the air conditioner multi-connected unit is powered on, the method comprises the following steps:
in step 301, the Homebus conversion device receives broadcast data sent by an air conditioner outdoor unit, and simulates the air conditioner outdoor unit to send the broadcast data to air conditioner indoor units in multiple groups of air conditioner indoor units connected with the air conditioner outdoor unit;
in step 302, the Homebus conversion device receives response data of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units;
in step 303, the Homebus switching device simulates the air conditioner indoor unit sending the response data according to the response data, and responds to the air conditioner outdoor unit.
In one embodiment, the broadcast data is used to inquire identification information of an air conditioner indoor unit connected to the air conditioner outdoor unit. After receiving broadcast data which is simulated and forwarded by the Homebus conversion device, the indoor unit of the air conditioner needs to respond own operation information including own identification information to the outdoor unit of the air conditioner.
In one embodiment, the Homebus conversion device receives response data of the air conditioner indoor units in the plurality of groups of air conditioner indoor units, and the response data comprises:
determining whether response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units are received or not by the Homebus conversion device, wherein the response data comprise identification information of the air conditioner indoor units which send the response data;
when response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, analyzing the response data and storing identification information of the air-conditioning indoor units which send the response data;
when the response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are not received, determining whether the time for sending the broadcast data exceeds a preset time length;
when the time for sending the broadcast data exceeds the preset time, the broadcast data is sent to the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units again;
and when the time for sending the broadcast data does not exceed the preset time, waiting for the response of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units to the broadcast data.
In summary, the present technical solution provides a method for communication between indoor and outdoor units of a multi-connected air conditioning unit, where the multi-connected air conditioning unit includes: the air conditioner outdoor unit, the Homebus conversion device and the multiple groups of air conditioner indoor units are connected through the communication bus Homebus, and after the air conditioner multi-connected unit is powered on, the method comprises the following steps: the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit and simulates the air conditioner outdoor unit to send the broadcast data to air conditioner indoor units in a plurality of groups of air conditioner indoor units connected with the air conditioner outdoor unit; the Homebus conversion device receives response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units; and the Homebus conversion device simulates the air conditioner indoor unit sending the response data according to the response data and responds to the air conditioner outdoor unit. The Homebus conversion device is added in the multi-connected air conditioner unit, and the Homebus conversion device is used for simulating and forwarding communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be increased, and the communication stability between the outdoor unit of the air conditioner and the indoor unit of the air conditioner is ensured under the condition of long distance. In addition, the technical scheme is more flexible in a connection mode of adding the Homebus conversion device in the multi-connected air-conditioning unit, and is convenient for installation of engineering projects of the multi-connected air-conditioning unit.
Referring to fig. 4, the present invention provides a method for communication between indoor and outdoor units of a multi-connected air conditioning unit, the multi-connected air conditioning unit including: the air conditioner outdoor unit, the Homebus conversion device and the multiple groups of air conditioner indoor units are connected through the communication bus Homebus, the specific connection mode refers to the air conditioner multi-connected unit described above, and after the air conditioner multi-connected unit is powered on, the method comprises the following steps:
in step 401, the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit connected with the Homebus conversion device, where the broadcast data is used to inquire identification information of an air conditioner indoor unit connected with the air conditioner outdoor unit;
in step 402, the Homebus conversion device determines whether identification information of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units connected with the Homebus conversion device is stored locally;
when the Homebus conversion device determines that the identification information of the indoor unit of the air conditioner is stored, executing step 403;
when the Homebus conversion device determines that the identification information of any air conditioner indoor unit is not stored, executing step 405;
in step 403, the air conditioner indoor unit corresponding to the identification information which is simulated and stored by the Homebus conversion device responds to the broadcast data, and simulates the air conditioner outdoor unit to send the broadcast data to other air conditioner indoor units in the multiple groups of air conditioner indoor units connected with the air conditioner outdoor unit;
in step 404, the Homebus conversion device simulates the air conditioner outdoor unit to send the broadcast data to the air conditioner indoor units in the plurality of groups of air conditioner indoor units connected with the air conditioner outdoor unit, and executes step 405.
In step 405, the Homebus conversion device determines whether response data of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units is received, wherein the response data comprises identification information of the air-conditioning indoor units which send the response data;
when response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, executing step 406;
when the response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are not received, executing step 407;
in step 406, the Homebus conversion device analyzes the response data and stores the identification information of the air conditioner indoor unit sending the response data, and step 410 is executed;
in step 407, the Homebus conversion means determines whether the time to transmit the broadcast data exceeds a predetermined time period;
when the time for transmitting the broadcast data exceeds the predetermined time length, performing step 408;
when the time for transmitting the broadcast data does not exceed the predetermined time length, performing step 409;
here, the predetermined time period may be set manually, for example, may be 10 milliseconds, and the like, which is not limited to this.
In step 408, the Homebus conversion device resends the broadcast data to the air-conditioning indoor units in the multiple groups of air-conditioning indoor units, and executes step 410;
in step 409, the Homebus switching device waits for the response of the air conditioning indoor units in the plurality of groups of air conditioning indoor units to the broadcast data.
In step 410, the Homebus conversion device simulates the air conditioner indoor unit sending the response data according to the response data, and responds to the air conditioner outdoor unit.
In summary, the present technical solution provides a method for communication between indoor and outdoor units of a multi-connected air conditioning unit, where the multi-connected air conditioning unit includes: the air conditioner outdoor unit, the Homebus conversion device and the multiple groups of air conditioner indoor units are connected through the communication bus Homebus, and after the air conditioner multi-connected unit is powered on, the method comprises the following steps: the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit and simulates the air conditioner outdoor unit to send the broadcast data to air conditioner indoor units in a plurality of groups of air conditioner indoor units connected with the air conditioner outdoor unit; the Homebus conversion device receives response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units; and the Homebus conversion device simulates the air conditioner indoor unit sending the response data according to the response data and responds to the air conditioner outdoor unit. The Homebus conversion device is added in the multi-connected air conditioner unit, and the Homebus conversion device is used for simulating and forwarding communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be increased, and the communication stability between the outdoor unit of the air conditioner and the indoor unit of the air conditioner is ensured under the condition of long distance. In addition, the technical scheme is more flexible in a connection mode of adding the Homebus conversion device in the multi-connected air-conditioning unit, and is convenient for installation of engineering projects of the multi-connected air-conditioning unit.
Referring to fig. 5, an embodiment of the present invention provides a communication bus Homebus control device, where the Homebus control device is installed in an air conditioning multi-connected unit as described above, and includes:
a Homebus input terminal loop 501 configured to receive broadcast data transmitted by the air conditioner outdoor unit;
an MCU control unit 502 configured to simulate the air conditioner outdoor unit to transmit the broadcast data to an air conditioner indoor unit of the plurality of sets of air conditioner indoor units connected thereto;
a Homebus output loop 503 configured to receive response data of an air conditioner indoor unit of the plurality of sets of air conditioner indoor units;
the MCU control unit 502 is further configured to simulate an air conditioner indoor unit sending the response data according to the response data, and respond to the air conditioner outdoor unit.
In one embodiment, the broadcast data is used to inquire identification information of an air conditioner indoor unit connected to the air conditioner outdoor unit.
Referring to fig. 6, in one embodiment, the MCU control list 502 includes:
a first determining subunit 5024, configured to determine whether response data of an air conditioner indoor unit in the multiple groups of air conditioner indoor units is received, where the response data includes identification information of the air conditioner indoor unit that sent the response data;
a data parsing subunit 5025 configured to, when response data of an air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units is received, parse the response data and store identification information of the air-conditioning indoor unit sending the response data;
a second decision subunit 5026, configured to determine whether the time for sending the broadcast data exceeds a predetermined time period when the response data of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units is not received;
a first processing subunit 5027, configured to resend the broadcast data to an air-conditioning indoor unit in the multiple groups of air-conditioning indoor units when the time for sending the broadcast data exceeds the predetermined time length;
a second processing subunit 5028, configured to wait for the response of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units to the broadcast data when the time for transmitting the broadcast data does not exceed the predetermined time length.
In summary, this technical scheme provides a Homebus controlling means, Homebus controlling means includes: the Homebus input end loop is configured to receive broadcast data sent by the air conditioner outdoor unit; the MCU control unit is configured to simulate the air conditioner outdoor unit to send the broadcast data to the air conditioner indoor units in the plurality of groups of air conditioner indoor units connected with the MCU control unit; the Homebus output end loop is configured to receive response data of the air conditioner indoor units in the plurality of groups of air conditioner indoor units; and the MCU control unit is configured to simulate the air conditioner indoor unit sending the response data according to the response data and respond to the air conditioner outdoor unit. The Homebus conversion device is added in the multi-connected air conditioner unit, and the Homebus conversion device is used for simulating and forwarding communication data of the indoor unit and the outdoor unit of the air conditioner, so that the communication distance between the outdoor unit of the air conditioner and the indoor unit of the air conditioner can be increased, and the communication stability between the outdoor unit of the air conditioner and the indoor unit of the air conditioner is ensured under the condition of long distance. In addition, the technical scheme is more flexible in a connection mode of adding the Homebus conversion device in the multi-connected air-conditioning unit, and is convenient for installation of engineering projects of the multi-connected air-conditioning unit.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (7)
1. The utility model provides an air conditioner multi-connected unit which characterized in that, air conditioner multi-connected unit includes: the air conditioner comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein each group of air conditioner indoor units are connected in series through the communication bus Homebus;
the multiple groups of air conditioner indoor units are connected in series with at least one Homebus conversion device through the Homebus, and then are connected in series with the air conditioner outdoor unit through the Homebus; or each group of air conditioner indoor units correspond to one Homebus conversion device, are connected in series with the Homebus conversion device through the Homebus, and then are connected in parallel with the air conditioner outdoor unit through the Homebus;
the Homebus conversion device is used for simulating and forwarding data transmitted between the air conditioner outdoor unit and the air conditioner indoor units in each group of air conditioner indoor units;
the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit;
the broadcast data is used for inquiring identification information of an air conditioner indoor unit connected with the air conditioner outdoor unit;
the Homebus conversion device receives response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units, and the response data comprises the following steps:
the Homebus conversion device determines whether response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, wherein the response data comprise identification information of the air-conditioning indoor units which send the response data;
when response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, analyzing the response data and storing identification information of the air-conditioning indoor units which send the response data;
when the response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are not received, determining whether the time for sending the broadcast data exceeds a preset time length;
when the time for sending the broadcast data exceeds the preset time, the broadcast data is sent to the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units again;
and when the time for sending the broadcast data does not exceed the preset time, waiting for the response of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units to the broadcast data.
2. The multi-connected air conditioning unit according to claim 1, wherein the Homebus conversion device comprises: the device comprises a Homebus input end loop, an MCU control unit and a Homebus output end loop;
the Homebus input end loop, the MCU control unit and the Homebus output end loop are connected through the Homebus, and the MCU control unit is located between the Homebus input end loop and the Homebus output end loop.
3. The multi-connected air conditioning unit according to claim 2, wherein the MCU control unit receives communication data transmitted by the outdoor unit of the air conditioner through the Homebus input end loop and transmits the communication data to the connected indoor unit of the air conditioner through the Homebus output end loop;
and the MCU control unit receives response data of the connected air conditioner indoor unit through the Homebus output end loop, simulates the air conditioner indoor unit sending the response data, and then sends the response data to the air conditioner outdoor unit through the Homebus input end loop.
4. The multi-connected air conditioning unit as claimed in claim 2, wherein the Homebus output end loop is provided with an impedance matching resistor.
5. A method for communication between indoor and outdoor units of a multi-connected air conditioning unit is characterized in that the multi-connected air conditioning unit comprises the following steps: the air conditioner multi-unit comprises an air conditioner outdoor unit, at least one communication bus Homebus conversion device and a plurality of groups of air conditioner indoor units, wherein the air conditioner outdoor unit, the Homebus conversion device and the plurality of groups of air conditioner indoor units are connected through the communication bus Homebus, and after the air conditioner multi-unit is electrified, the method comprises the following steps:
the Homebus conversion device receives broadcast data sent by the air conditioner outdoor unit and simulates the air conditioner outdoor unit to send the broadcast data to the air conditioner indoor units in the multiple groups of air conditioner indoor units connected with the air conditioner outdoor unit;
the Homebus conversion device receives response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units;
the Homebus conversion device simulates an air conditioner indoor unit sending the response data according to the response data and responds to the air conditioner outdoor unit;
the Homebus conversion device receives response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units, and the response data comprises the following steps:
the Homebus conversion device determines whether response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, wherein the response data comprise identification information of the air-conditioning indoor units which send the response data;
when response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are received, analyzing the response data and storing identification information of the air-conditioning indoor units which send the response data;
when the response data of the air-conditioning indoor units in the multiple groups of air-conditioning indoor units are not received, determining whether the time for sending the broadcast data exceeds a preset time length;
when the time for sending the broadcast data exceeds the preset time, the broadcast data is sent to the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units again;
when the time for sending the broadcast data does not exceed the preset time, waiting for the response of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units to the broadcast data;
the Homebus conversion device comprises: the device comprises a Homebus input end loop, an MCU control unit and a Homebus output end loop.
6. The method of claim 5, wherein the broadcast data is used to inquire identification information of an indoor unit connected to the outdoor unit.
7. The method of claim 5, wherein the MCU control unit comprises:
the first judging subunit is configured to determine whether response data of the air conditioner indoor units in the multiple groups of air conditioner indoor units are received, wherein the response data comprise identification information of the air conditioner indoor units which send the response data;
the data analysis subunit is configured to analyze the response data and store the identification information of the air-conditioning indoor unit sending the response data when receiving the response data of the air-conditioning indoor unit in the plurality of groups of air-conditioning indoor units;
a second determining subunit configured to determine whether the time for transmitting the broadcast data exceeds a predetermined time period when the response data of the air-conditioning indoor units in the plurality of groups of air-conditioning indoor units is not received;
a first processing subunit configured to retransmit the broadcast data to an air-conditioning indoor unit of the plurality of groups of air-conditioning indoor units when a time for transmitting the broadcast data exceeds the predetermined time length;
a second processing subunit configured to wait for a response of an air conditioning indoor unit of the plurality of groups of air conditioning indoor units to the broadcast data when the time for transmitting the broadcast data does not exceed the predetermined time length.
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| CN108696309B (en) * | 2018-04-24 | 2022-01-25 | 青岛海尔空调电子有限公司 | Relay device and multi-connected control system |
| CN112013506B (en) * | 2019-05-31 | 2022-02-25 | 青岛海尔空调电子有限公司 | Communication detection method and device and air conditioner |
| CN111043721B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | CAN bus matching resistor access method and device, air conditioning unit and system |
| CN112944571A (en) * | 2021-03-01 | 2021-06-11 | 青岛海尔空调电子有限公司 | Method for highly accelerating multi-split wireless networking based on internal and external machines |
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