CN104896658A - Air conditioning system and communication method - Google Patents
Air conditioning system and communication method Download PDFInfo
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- CN104896658A CN104896658A CN201510246069.7A CN201510246069A CN104896658A CN 104896658 A CN104896658 A CN 104896658A CN 201510246069 A CN201510246069 A CN 201510246069A CN 104896658 A CN104896658 A CN 104896658A
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning system and a communication method. The air conditioning system comprises an outdoor unit and a plurality of indoor units. The outdoor unit is in communication with the indoor units through a wireless ad hoc network. The communication method comprises the following steps: the indoor units send out search signals for searching the outdoor unit, search and obtain wireless signals of the outdoor unit and are connected with the outdoor unit according to the signal conditions of the outdoor unit to perform communication or connected with the outdoor unit through other indoor units serving as relays so as to perform communication. The outdoor unit and the indoor units are connected through the wireless ad hoc network, a communication cable and a gateway do not need to be arranged independently, the problem of limitation of the connection number of the indoor units connected with the outdoor unit and the connecting distance is solved, the troubleshooting and maintenance are performed easily, and the installing and using cost of the air conditioning system is effectively reduced.
Description
Technical field
The present invention relates to a kind of air-conditioning system and communication means, belong to air-conditioning technical field.
Background technology
Central air-conditioning multi-connected machine is generally that one or multiple stage off-premises station and one or multiple stage indoor set form a coolant system, uses copper pipe to be connected between off-premises station and indoor set.Indoor set also needs to transmit some interaction datas except copper pipe is connected transmission refrigerant with off-premises station, and traditional mode is that indoor set and off-premises station all adopt wired connected mode to carry out alternately.
As shown in Figure 1, indoor apparatus of air conditioner and air-conditioner outdoor unit carry out wired connection by power line and order wire, and in order to save connecting line, by Signal averaging on the zero line of AC power cord.These wire communication circuits are generally the shielding line of multiply, and also may there is polarity.In installation process, require that live wire, zero line, ground wire, holding wire accurately connect, make installation effectiveness low, and if wiring error, circuit block can be caused to damage, and fault rate is high.Be all generally installation of ceiling due to indoor set or be arranged on higher position, such as be installed on inside ceiling, the unavoidable ascending stair of wiring workman is climbed, and also will consider the situations such as forceful electric power interference simultaneously, this brings difficulty just to connection route planning, thus causes construction costs to improve.Further, the wiring of connection will directly affect the reliability of communication quality and operation of air conditioner.In addition, adopt the connection of wired mode, there is the problems such as misarrangement difficulty, Maintenance Difficulty in the wiring of indoor.
Existing wireless connect technology effectively can solve the problem of wiring and maintenance, but current wireless communication technique is all the restriction having certain communication distance, and an off-premises station is also very limited to the number of connection of multiple stage indoor set.For Larger Engineering Projects, may need more indoor set, be separately positioned on different floors, and off-premises station generally be arranged on roof, the quantitative limitation of this Distance geometry number should be used as corresponding restriction obviously also to central air-conditioning.In order to avoid can not communication interaction when existing wireless network can not meet off-premises station and indoor set distance apart from each other, address this is that by arranging gateway forms at diverse location, each gateway and off-premises station wired connection, each gateway and one or more indoor set wireless connections, each gateway is for arranging the address of the indoor set of corresponding wireless connections, and address is sent to corresponding indoor set, machine data in correspondence is sent to gateway by communication by every platform indoor set, interior machine data is sent to off-premises station according to the address of every platform indoor set by gateway.But this scheme still needs to arrange the communications cable between off-premises station and gateway, needs in addition to arrange gateway at ad-hoc location, and gateway needs to configure power supply separately thereupon, misarrangement difficulty, Maintenance Difficulty still can be caused, high in cost of production problem.
Summary of the invention
The technical problem to be solved in the present invention is: the problem that when how to solve multiple stage indoor set and off-premises station radio communication, Distance geometry quantity is restricted.
For realizing above-mentioned goal of the invention, the invention provides a kind of air-conditioning system and communication means.
On the one hand, the invention provides a kind of air-conditioning system communication means, this air-conditioning system comprises off-premises station and multiple stage indoor set, and described off-premises station is communicated by wireless self-networking with described indoor set;
Described communication means comprises the steps:
Described indoor set sends finds off-premises station search signal, searches and obtains the wireless signal of off-premises station, and connect described off-premises station communication according to the signal(l)ing condition of off-premises station or by other indoor set as off-premises station communication described in relay connection.
Wherein more preferably, the step that the described signal(l)ing condition according to off-premises station connects described off-premises station communication comprises:
Judge whether the wireless signal strength of off-premises station meets stabilized communication, whether linking number reaches and the upper limit is set;
If the wireless signal strength of off-premises station can meet communication, and linking number does not reach the upper limit, be then connected with off-premises station and communicate;
Otherwise find other indoor set and to be connected with other indoor set communicated with off-premises station and connect and communicate.
Wherein more preferably, other indoor set of described searching to be connected with other indoor set communicated with off-premises station and to connect the step communicated and comprise:
Judge other indoor set whether wireless signal strength meets communication, whether linking number reaches arranges the upper limit;
If the wireless signal strength of other indoor set can meet communication, and linking number does not reach and arranges the upper limit, be then connected with other indoor set and communicate;
Otherwise networking again.
Wherein more preferably, the described step be connected with other indoor set specifically comprises:
Find out the indoor set that other wireless signal strength is the strongest;
Judge whether the linking number of the indoor set that signal strength signal intensity is the strongest reaches the upper limit;
If the linking number of the indoor set that signal strength signal intensity is the strongest reaches the upper limit, then the indoor set of signal strength signal intensity suboptimum is selected to connect communication.
Wherein more preferably, described indoor set is by other indoor sets repeatedly off-premises station described in relay connection.
On the other hand, the present invention also provides a kind of air-conditioning system, comprises off-premises station and multiple stage indoor set;
The off-premises station wireless self-networking communication module that described off-premises station comprises off-premises station control module and is connected with described off-premises station control module;
The indoor set wireless self-networking communication module that described indoor set comprises indoor set control module and is connected with described indoor set control module;
Described off-premises station wireless self-networking communication module is connected by wireless self-networking with described indoor set wireless self-networking communication module;
Described off-premises station control module is communicated with described indoor set control module by described off-premises station wireless self-networking communication module, described indoor set wireless self-networking communication module.
Wherein more preferably, described indoor set also comprises detecting signal unit, and described detecting signal unit is sent to described indoor set wireless self-networking communication module for the wireless signal strength and linking number detecting other indoor sets or off-premises station;
Described indoor set wireless self-networking communication module is connected other indoor sets or off-premises station according to the wireless signal strength of other indoor sets or off-premises station with linking number.
Wherein more preferably, described indoor set comprises the first indoor set, the second indoor set, the 3rd indoor set,
The indoor set wireless self-networking communication module of described second indoor set also comprises retransmission unit;
Described retransmission unit is used for the communication relaying between described first indoor set and described off-premises station, or
For the communication relaying of the first indoor set and described 3rd indoor set.
Wherein more preferably, described wireless self-networking is wireless multi-hop network.
Wherein more preferably, the operating carriers frequency range of described off-premises station wireless self-networking communication module and described indoor set wireless self-networking communication module is 433MHz.
Air-conditioning system of the present invention and communication means, off-premises station and indoor set is connected by wireless self-networking, without the need to arranging separately the communications cable and gateway, solve off-premises station to multiple stage indoor set linking number and the restriction being connected distance, easy misarrangement and maintenance, effectively reduce the cost of installation and use of air-conditioning system.
Accompanying drawing explanation
Fig. 1 is in prior art, air-conditioning system indoor set and off-premises station wire communication schematic diagram;
Fig. 2 is air-conditioning system structural representation of the present invention;
Fig. 3 is one embodiment of this invention structural representation;
Fig. 4 is one embodiment of this invention structural representation;
Fig. 5 is one embodiment of this invention structural representation;
Fig. 6 is air-conditioning system communication means schematic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 2, a kind of air-conditioning system of the present invention, this air-conditioning system comprises off-premises station and multiple stage indoor set; As shown in Figure 3, Figure 4, the off-premises station off-premises station wireless self-networking communication module that comprises off-premises station control module and be connected with off-premises station control module; The indoor set wireless self-networking communication module that indoor set comprises indoor set control module and is connected with indoor set control module; Off-premises station wireless self-networking communication module is connected by network with indoor set wireless self-networking communication module; Off-premises station control module is communicated with indoor set control module by off-premises station wireless self-networking communication module, indoor set wireless self-networking communication module.Detailed description is launched to air-conditioning system provided by the invention below.
Some larger engineering projects are when laying commercial air conditioning system (such as MDV system, Multi-Digital Variable), and off-premises station needs to be arranged on roof, and indoor set needs scattering device at the not chummery of each floor.On the one hand, indoor set One's name is legion, indoor set likely away from off-premises station (more than 100 meters) on the other hand.The indoor set that existing wireless network cannot reach numerous quantity simultaneously with off-premises station communication interaction, affect Consumer's Experience.In order to promote in Consumer's Experience the present invention further, by arranging indoor set wireless self-networking communication module respectively on indoor set, off-premises station arranges wireless self-networking communication module, indoor set is connected by wireless self-networking with off-premises station, transmitting control data.Both solved Distance geometry number quantitative limitation when indoor set is connected with off-premises station by wireless self-networking in the present invention, and it also avoid and need to arrange gateway at diverse location, power issue is set separately.In terms of existing technologies, air-conditioning system provided by the invention upgrades simple, and cost is lower.
In the present invention, indoor set is preferably also provided with detecting signal unit, detecting signal unit detects wireless signal strength and the wireless connections number of off-premises station and other indoor set neighbouring, and signal detecting result is sent to wireless self-networking communication module, wireless self-networking communication module is connected other indoor sets or off-premises station according to the wireless signal strength of other indoor sets or off-premises station with linking number.
Generally, wireless communication distance stable under indoor spacious environment is probably about 100 meters, and the interior machine quantity that off-premises station can connect simultaneously is 6.Larger engineering project may need more indoor set (such as 64), likely indoor set farthest from off-premises station more than 100 meters away from.After technical scheme provided by the invention, by interior machine wireless relay and off-premises station connecting communication, off-premises station directly can connect 6 interior machines, each interior machine can relay connection 3 interior machines, communication distance stable so just can arrive 300m, maximum interior machine quantity 78 interior machines that can connect simultaneously, can practical requirement.
As shown in Figure 3, if current indoor machine is from off-premises station close together (signal is strong), and off-premises station linking number does not reach the upper limit, then current indoor machine is directly connected by wireless self-networking with off-premises station and communicates.
As shown in Figure 4, if current indoor machine distance off-premises station (signal difference) comparatively far away, or off-premises station linking number reaches the upper limit, then current indoor machine cannot to be connected by wireless self-networking with off-premises station and to communicate.The wireless signal of other indoor set near current indoor machine is detected by detecting signal unit, finds neighbouring signal strong and the indoor set that linking number does not reach the upper limit connects communication by wireless self-sustaining network.
As shown in Figure 5, in air-conditioning system provided by the invention, multiple stage indoor set and off-premises station form a wireless self-networking, some indoor set (indoor set 1 to indoor set 6) is direct-connected with off-premises station, and some indoor set (indoor set 2, indoor set 16) is connected the relaying communicated with off-premises station as indoor set.Another part indoor set (indoor set 12) is then connected the relaying communicated with indoor set as indoor set.When needing to communicate to off-premises station apart from distant indoor set, need by multiple indoor set as relaying, to the order of off-premises station transport communication.Therefore this indoor set forms wireless multi-hop network with as the indoor set of relaying, off-premises station.In the present invention, the operating carriers frequency range of off-premises station wireless self-networking communication module and indoor set wireless self-networking communication module is preferably 433MHz.Off-premises station wireless self-networking communication module and indoor set wireless self-networking communication module are preferably RF module.
The present invention also provides a kind of air-conditioning system communication means, and this air-conditioning system comprises off-premises station and multiple stage indoor set, and off-premises station is communicated by wireless self-networking with indoor set; As shown in Figure 6, communication means comprises the steps: that indoor set sends and finds off-premises station search signal, searches and obtains the wireless signal of off-premises station, and connecting off-premises station communication according to the signal(l)ing condition of off-premises station.Launch to describe in detail to air-conditioning system communication means provided by the invention below.
As shown in Figure 6, after indoor set electrifying startup, send the wireless signal finding off-premises station, the signal(l)ing condition according to off-premises station connects off-premises station communication.Particularly: current indoor machine judges whether the wireless signal strength of off-premises station meets communication, and whether linking number reaches the upper limit; If the wireless signal strength of off-premises station can meet communication, and do not reach the linking number upper limit (linking number is less than 6), then current indoor machine is connected with off-premises station and communicates; Otherwise (linking number be greater than 6 or current radio signal strength do not meet data communication requirements) current indoor machine finds other indoor set and is connected with other indoor set and communicate.
As shown in Figure 6, when current indoor machine is found other indoor set and is connected with other indoor set: current indoor machine judges whether the wireless signal strength of other indoor set meets and communicates, and whether linking number reaches the upper limit; If the wireless signal strength of other indoor set near room can meet communication, and do not reach the upper limit (linking number is less than 3), then current indoor machine is connected with other indoor set and communicates; Otherwise (current radio signal strength does not meet data communication requirements) disconnects the networking again of current network.
When other indoor set of current indoor machine connects in the present invention: need the indoor set that near finding out, other wireless signal strength is the strongest; Current indoor machine judges whether the indoor set linking number that signal strength signal intensity is the strongest reaches the upper limit; If the indoor set that letter intensity is the strongest reaches the upper limit (linking number is greater than 3), then current indoor machine selects the indoor set of signal strength signal intensity suboptimum to connect communication.
In sum, air-conditioning system of the present invention and communication means, off-premises station and indoor set is connected by wireless self-networking, without the need to arranging separately the communications cable and gateway, solve off-premises station to multiple stage indoor set linking number and the restriction being connected distance, easy misarrangement and maintenance, effectively reduce the cost of installation and use of air-conditioning system.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. an air-conditioning system communication means, is characterized in that, this air-conditioning system comprises off-premises station and multiple stage indoor set, and described off-premises station is communicated by wireless self-networking with described indoor set;
Described communication means comprises the steps:
Described indoor set sends finds off-premises station search signal, searches and obtains the wireless signal of off-premises station, and connect described off-premises station communication according to the signal(l)ing condition of off-premises station or by other indoor set as off-premises station communication described in relay connection.
2. communication means as claimed in claim 1, it is characterized in that, the step that the described signal(l)ing condition according to off-premises station connects described off-premises station communication comprises:
Judge whether the wireless signal strength of off-premises station meets stabilized communication, whether linking number reaches and the upper limit is set;
If the wireless signal strength of off-premises station can meet communication, and linking number does not reach the upper limit, be then connected with off-premises station and communicate;
Otherwise find other indoor set and to be connected with other indoor set communicated with off-premises station and connect and communicate.
3. communication means as claimed in claim 2, is characterized in that, other indoor set of described searching to be also connected with other indoor set communicated and to connect the step communicated and comprise with off-premises station:
Judge other indoor set whether wireless signal strength meets communication, whether linking number reaches arranges the upper limit;
If the wireless signal strength of other indoor set can meet communication, and linking number does not reach and arranges the upper limit, be then connected with other indoor set and communicate;
Otherwise networking again.
4. communication means as claimed in claim 3, it is characterized in that, the described step be connected with other indoor set specifically comprises:
Find out the indoor set that other wireless signal strength is the strongest;
Judge whether the linking number of the indoor set that signal strength signal intensity is the strongest reaches the upper limit;
If the linking number of the indoor set that signal strength signal intensity is the strongest reaches the upper limit, then the indoor set of signal strength signal intensity suboptimum is selected to connect communication.
5. communication means as claimed in claim 1, is characterized in that, described indoor set is by other indoor sets repeatedly off-premises station described in relay connection.
6. an air-conditioning system, is characterized in that, comprises off-premises station and multiple stage indoor set;
The off-premises station wireless self-networking communication module that described off-premises station comprises off-premises station control module and is connected with described off-premises station control module;
The indoor set wireless self-networking communication module that described indoor set comprises indoor set control module and is connected with described indoor set control module;
Described off-premises station wireless self-networking communication module is connected by wireless self-networking with described indoor set wireless self-networking communication module;
Described off-premises station control module is communicated with described indoor set control module by described off-premises station wireless self-networking communication module, described indoor set wireless self-networking communication module.
7. air-conditioning system as claimed in claim 6, it is characterized in that, described indoor set also comprises detecting signal unit, and described detecting signal unit is sent to described indoor set wireless self-networking communication module for the wireless signal strength and linking number detecting other indoor sets or off-premises station;
Described indoor set wireless self-networking communication module is connected other indoor sets or off-premises station according to the wireless signal strength of other indoor sets or off-premises station with linking number.
8. air-conditioning system as claimed in claim 6, it is characterized in that, described indoor set comprises the first indoor set, the second indoor set, the 3rd indoor set,
The indoor set wireless self-networking communication module of described second indoor set also comprises retransmission unit;
Described retransmission unit is used for the communication relaying between described first indoor set and described off-premises station, or
For the communication relaying of the first indoor set and described 3rd indoor set.
9. air-conditioning system as claimed in claim 6, it is characterized in that, described wireless self-networking is wireless multi-hop network.
10. the air-conditioning system as described in claim 6-9 any one, is characterized in that, the operating carriers frequency range of described off-premises station wireless self-networking communication module and described indoor set wireless self-networking communication module is 433MHz.
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