CN108019881A - Line control machine method for controlling power supply, device and the air conditioner of multi-connected air conditioning system - Google Patents
Line control machine method for controlling power supply, device and the air conditioner of multi-connected air conditioning system Download PDFInfo
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- CN108019881A CN108019881A CN201711107036.XA CN201711107036A CN108019881A CN 108019881 A CN108019881 A CN 108019881A CN 201711107036 A CN201711107036 A CN 201711107036A CN 108019881 A CN108019881 A CN 108019881A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 56
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Abstract
The present invention relates to air-conditioning technical field, line control machine method for controlling power supply, device and the air conditioner of a kind of multi-connected air conditioning system are specifically provided, it is intended to solve how to realize the technical problem that multi-connected air conditioning system automatically determines line control machine power supply host.For this purpose, the method for supplying power in the present invention generates a random number to indoor unit first, the host powered in the multiple indoor units of a selection to line control machine is then selected in a manner of random number countdown.Meanwhile the power supply unit in the present invention can perform and realize above-mentioned method of supplying power to, and above-mentioned power supply unit is provided with air conditioner.Technical scheme, can realize that independently competition is power supply host to multiple indoor units, without manually setting, reduces installation and the maintenance difficulty of multi-connected air conditioning system.
Description
Technical field
The present invention relates to air-conditioning technical field, and in particular to a kind of line control machine power supply control side of multi-connected air conditioning system
Method, device and air conditioner.
Background technology
Multi-online air-conditioning system includes VRF Air Conditioning System, and the line control machine with unit communication connection.Multiple
Air-conditioner set includes more indoor units, wherein, an indoor unit is communicated as host and line control machine and powered to it.At present, may be used
To set the group address of every indoor unit respectively using the method for manually setting dial-up, and using the indoor unit of specific group address as
Host, but this host determination method is cumbersome, adds the installment work of multi-online air-conditioning system.At the same time in host event
In the case of barrier, it is also necessary to which the group address of change failed host and new host manually, adds maintenance difficulty.
The content of the invention
It has been to solve how to realize that multi-connected air conditioning system automatically determines to solve the above problem of the prior art
The technical problem of line control machine power supply host.A kind of line control machine method for controlling power supply the present invention provides multi-connected air conditioning system,
Device and air conditioner.
In a first aspect, multi-connected air conditioning system includes multiple indoor units, and multiple indoor units and institute in the present invention
State and be provided with the supply line that can be connected between line control machine, the line control machine method for controlling power supply of the multi-connected air conditioning system includes：
In the multi-connected air conditioning system start-up course, each interior is generated using default random digit generation method
The corresponding random number of machine；
Countdown is carried out respectively according to each random number generated；
When any random number countdown is completed, if the line control machine is non-by electricity condition, the random number pair is controlled
The indoor unit answered powers the line control machine.
Further, an optimal technical scheme provided by the invention is：
After the step of " carrying out countdown respectively according to each random number generated ", the method further includes：
Before any random number countdown is completed, if the line control machine is by electricity condition, the random number is interrupted
Countdown.
Further, an optimal technical scheme provided by the invention is：
After indoor unit is powered to line control machine, the step of interruption of power supply judges is further included：
If detecting the line control machine to be non-by electricity condition, interrupt the indoor unit and power to line control machine；
If it is by electricity condition to detect the line control machine, judge whether the indoor unit is electrically connected with the line control machine, if
It is no, then interrupt the indoor unit and power to line control machine.
Further, an optimal technical scheme provided by the invention is：
The step of " judging whether the indoor unit is electrically connected with the line control machine ", specifically includes：
Control the indoor unit to send detection signal to line control machine, and gather the detection signal that the line control machine receives；Its
In, in the case where the supply line is line traffic control line, the detection signal is default low and high level pulse signal or numeral
Signal；
Judge that whether the indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line traffic control if consistent
Device is electrically connected, and is judged as that the indoor unit is not electrically connected with line control machine if inconsistent；
Alternatively,
The step of " judging whether the indoor unit is electrically connected with the line control machine ", specifically includes：
If the indoor unit receives the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is electrically connected with line control machine
Connect；
If the indoor unit does not receive the confirmation connection signal of line control machine feedback, it is judged as the indoor unit with line control machine not
It is electrically connected.
Further, an optimal technical scheme provided by the invention is：
The step of " generating the corresponding random number of each indoor unit using default random digit generation method ", specifically includes：
Shown method generates the corresponding random number N of each indoor unit according to the following formula：
N=a × Tmr+b×AD
Wherein, the TmrFor preset timer count value, the AD is any temperature sensor institute in current indoor machine
The output valve of corresponding AD conversion module, a and b are predetermined coefficient, and a ≠ b.
The line control machine power supply control apparatus of above-mentioned multi-connected air conditioning system includes in second aspect, the present invention：
Random number generation module, is configured in the multi-connected air conditioning system start-up course, using default random number
Generation method generates the corresponding random number of each indoor unit；
Random number timing module, be configured to each random number for being generated according to the random number generation module respectively into
Row countdown；
First power control module, is configured to the random number timing module and is completed in any random number countdown
When, if the line control machine is non-by electricity condition, control the corresponding indoor unit of the random number to power the line control machine.
Further, an optimal technical scheme provided by the invention is：
Described device further includes the second power control module and/or the 3rd power control module；
Second power control module, it is complete in any random number countdown to be configured to the random number timing module
Into before, if the line control machine is by electricity condition, the countdown of the random number is interrupted；
3rd power control module, is configured to after machine is powered to line control machine indoors, according to line control machine by electric shape
State judges whether interruption of power supply：
If detecting the line control machine to be non-by electricity condition, interrupt the indoor unit and power to line control machine；
If it is by electricity condition to detect the line control machine, judge whether the indoor unit is electrically connected with the line control machine, if
It is no, then interrupt the indoor unit and power to line control machine.
Further, an optimal technical scheme provided by the invention is：
3rd power control module includes first and is electrically connected judging unit and/or the second electrical connection judging unit；
Described first is electrically connected judging unit, is configured to perform operations described below：
Control indoor unit to send detection signal to line control machine, and gather the detection signal that the line control machine receives；
Judge that whether the indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line if consistent
Control device to be electrically connected, be judged as that the indoor unit is not electrically connected with line control machine if inconsistent；
Described second is electrically connected judging unit, is configured to perform operations described below：
If the indoor unit receives the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is electrically connected with line control machine
Connect；
If the indoor unit does not receive the confirmation connection signal of line control machine feedback, it is judged as the indoor unit with line control machine not
It is electrically connected.
Further, an optimal technical scheme provided by the invention is：
The random number generation module is further, is configured to method generation random number shown according to the following formula：
N=a × Tmr+b×AD
Wherein, the TmrFor preset timer count value, the AD is corresponding to any temperature sensor in indoor unit
AD conversion module output valve, a and b are predetermined coefficient, and a ≠ b.
Air conditioner in the third aspect, the present invention includes the line traffic control of the multi-connected air conditioning system described in above-mentioned technical proposal
Device power supply control apparatus.
Compared with the immediate prior art, above-mentioned technical proposal at least has the advantages that：
1st, the present invention in multi-connected air conditioning system line control machine method for controlling power supply, based on indoor unit own temperature sensor
The data generation random number gathered, can increase the otherness of random number between different indoor units
2nd, in the present invention multi-connected air conditioning system line control machine method for controlling power supply, verification detection can be used signal or to obtain
Take the mode for confirming connection signal, indoors machine judge after powering to line control machine its with line control machine with the presence or absence of being electrically connected, and then
Judge whether interruption of power supply according to judging result, so that it is determined that final power supply host.
Brief description of the drawings
Fig. 1 is a kind of key step stream of the line control machine method for controlling power supply of multi-connected air conditioning system in the embodiment of the present invention
Cheng Tu；
Fig. 2 is the key step of the line control machine method for controlling power supply of another multi-connected air conditioning system in the embodiment of the present invention
Flow chart；
Fig. 3 is a kind of line control machine power supply control apparatus primary structure signal of multi-connected air conditioning system in the embodiment of the present invention
Figure.
Embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the technical principle of the present invention, it is not intended that limit the scope of the invention.
Before multi-connected air conditioning system installation, it usually needs set in advance in the main chamber for being responsible for powering to line control machine
Machine, but after main indoor unit breaks down, new main indoor unit is also reset, multi-online air-conditioning system will certainly be increased
Maintenance difficulty.Based on this, the present invention provides a kind of line control machine method for controlling power supply of multi-connected air conditioning system, this method energy
Enough controlling each indoor unit in multi-connected air conditioning system, independently competition is main indoor unit, so that current main indoor unit occurs
After failure, other indoor units can also be automatically converted to new main indoor unit.
Below in conjunction with the accompanying drawings, the line control machine method for controlling power supply of the multi-connected air conditioning system in the embodiment of the present invention is carried out
Explanation.
Refering to attached drawing 1, Fig. 1 illustrates a kind of line control machine power supply control of multi-connected air conditioning system in the present embodiment
The key step of method.As shown in Figure 1, the interior in multi-connected air conditioning system can be controlled in the present embodiment as steps described below
Machine is powered to line control machine, wherein, multi-connected air conditioning system can include line control machine and multiple indoor units, and multiple indoor units and
The supply line that can be connected is provided between line control machine.
Step S101：In multi-connected air conditioning system start-up course, each room is generated using default random digit generation method
The corresponding random number of interior machine.
Specifically, the method shown in (1) the corresponding random number of each indoor unit can be generated according to the following formula in the present embodiment
N：
N=a × Tmr+b×AD (1)
Each meaning of parameters is in formula (1)：
TmrFor preset timer count value, AD is the AD conversion mould corresponding to any temperature sensor in current indoor machine
The output valve of block, a and b are predetermined coefficient, and a ≠ b.The corresponding preset timer count value of each indoor unit in the present embodiment
TmrIt may be the same or different.Meanwhile temperature sensor refers to being disposed in the interior machine in the present embodiment, for detecting
The sensor of the temperature information such as indoor environment temperature or indoor unit operating temperature, and AD conversion module is then used for temperature sensor
The analog signal gathered is converted to digital signal, can be with since the output error of different AD conversion modules is not quite similar
Increase the otherness of different random number.
Step S102：Countdown is carried out respectively according to each random number generated.
For example, multi-connected air conditioning system includes 18 indoor units in the present embodiment, being first according to above-mentioned steps S101 can be with
18 random numbers are obtained, countdown is then carried out respectively to this 18 random numbers again, since random number has otherness, so often
The countdown deadline of a random number is also not quite similar.
Step S103：When any random number countdown is completed, if line control machine is non-by electricity condition, the random number pair is controlled
The indoor unit answered powers line control machine.
Specifically, from abovementioned steps S101 and S102, when the countdown of random number corresponding to each indoor unit is completed
Between be not quite similar, therefore when line control machine for it is non-by electricity condition when, which random number countdown is first completed, then is controlled corresponding to it
Indoor unit is powered to line control machine, it is achieved thereby that the indoor unit based on random number countdown independently competes.
In a preferred embodiment of the present embodiment, also there are line control machine before any random number countdown completion
Through by the situation of electricity condition, to show that existing indoor unit is powered to line control machine, the random countdown can be interrupted immediately at this time.
Further, also there are the identical feelings of the random number corresponding to multiple indoor units in the step S101 shown in Fig. 1
Condition, will necessarily power to line control machine at the same time in step S103 there are multiple indoor units at this time.Based on this, one of the present embodiment is excellent
Select in embodiment, can also judge whether to interrupt indoor unit as steps described below after the step S103 shown in Fig. 1 is performed
Power to line control machine, be specially：
If it is non-by electricity condition to detect line control machine, show that multi-connected air conditioning system there are failure, then can interrupt the interior
Machine is powered to line control machine.
If it is by electricity condition to detect line control machine, show that multi-connected air conditioning system power supply is normal, but multiple indoor units at this time
Power supply state is in, therefore also needs to judge whether current indoor machine exists with line control machine and is electrically connected, if in the presence of showing line traffic control
Device receive current indoor machine output supply current, if there is no show line control machine do not receive current indoor machine output
Supply current, such case can interrupt the indoor unit and power to line control machine.
In a preferred embodiment of the present embodiment, current indoor machine and line control machine can be judged as steps described below
With the presence or absence of electrical connection, it is specially：
(1) control current indoor machine to send detection signal to line control machine, and gather the detection signal that line control machine receives.
Specifically, in the present embodiment in the case where supply line is line traffic control line, detection signal can be arranged to height
Level pulse signal or digital signal.
Line control machine and indoor unit can be provided with signal gathering unit in multi-connected air conditioning system in the present embodiment, indoor
Machine can pass through signal gathering unit interactive information with line control machine so that line control machine can gather the detection that indoor unit is sent to
Signal, indoor unit can also gather the detection signal that line control machine receives.Further, it is line traffic control line and communication in supply line
In the case of normal, indoor unit can also gather the detection signal transmitted in line traffic control line, i.e. gathering line by signal gathering unit
The detection signal that control device receives.
(2) judge that whether indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line if consistent
Control device to be electrically connected, be judged as that the indoor unit is not electrically connected with line control machine if inconsistent.
In another preferred embodiment of the present embodiment, current indoor machine and line can also be judged as steps described below
Device is controlled with the presence or absence of being electrically connected, is specially：
If current indoor machine receives the confirmation connection signal of line control machine feedback, it is judged as the current indoor machine and line traffic control
Device is electrically connected.If current indoor machine does not receive the confirmation connection signal of line control machine feedback, it is judged as the indoor unit and line traffic control
Device is not electrically connected.
Judge that current indoor machine and line control machine whether there is it should be noted that although the present invention discloses two kinds and be electrically connected
Embodiment, but protection scope of the present invention is expressly not limited to these embodiments, people in the art
Member can also use other judgment modes, realize and judge that current indoor machine whether there is the effect being electrically connected with line control machine.
With continued reference to attached drawing 2, the line control machine that Fig. 2 illustrates another multi-connected air conditioning system in the present embodiment supplies
The key step of electric control method.As shown in Fig. 2, to multi-joint by taking the random number corresponding to current indoor machine as an example in the present embodiment
The line control machine method for controlling power supply of formula air-conditioning system illustrates, and specifically, can control current indoor machine as steps described below
To line control machine power supply or interruption of power supply：
Step S201：Countdown is carried out according to the corresponding random number of current indoor machine.
Step S202：Judge line control machine whether by electricity.Specifically, it is in if line control machine and step is performed if by electricity condition
S203, is not in performing step S204 if by electricity condition if line control machine.
Step S203：When interrupting nonce count.
Step S204：Judge whether random number countdown is completed.Specifically, step is performed if random number countdown is completed
S205, continues to judge whether random number countdown is completed if random number countdown does not complete.
Step S205：Power to line control machine.Specifically, current indoor machine is controlled to power to line control machine.
Step S206：Judge line control machine whether by electricity.Specifically, it is in if line control machine and step is performed if by electricity condition
S207, is not in performing step S210 if by electricity condition if line control machine.
Step S207：Detection signal is sent to line control machine.Specifically, current indoor machine is controlled to send detection letter to line control machine
Number.
Step S208：Judge to send whether consistent with the detection signal of collection.Specifically, if current indoor machine is sent
It is consistent with the detection signal collected then to perform step S209, if the detection signal that current indoor machine sends and collects is not
Consistent then execution step S210.Wherein, the detection signal that current indoor machine collects refers to the detection received by line control machine
Signal.
Step S209：Continue to power to line control machine.Specifically, control current indoor machine continues to power to line control machine, that is, works as
Preceding indoor unit is finally definite main indoor unit.
Step S210：Interruption of power supply.Specifically, control current indoor machine is interrupted powers to line control machine.
By distributing random number to every indoor unit in the present embodiment, and a selection is selected by the way of random number countdown
The indoor unit powered to line control machine so that multi-connected air conditioning system can be to line control machine automatic power, so as to reduce multiple
The installation of air-conditioning system and maintenance difficulty.
Although each step is described in the way of above-mentioned precedence in above-described embodiment, this area
Technical staff is appreciated that to realize the effect of the present embodiment, is performed between different steps not necessarily in such order,
It (parallel) execution at the same time or can be performed with reverse order, these simple changes all protection scope of the present invention it
It is interior.
Based on the technical concept identical with embodiment of the method, the embodiment of the present invention also provides a kind of multi-connected air conditioning system
Line control machine power supply control apparatus.The line control machine power supply control apparatus of the multi-connected air conditioning system is carried out specifically below in conjunction with the accompanying drawings
Explanation.
Refering to attached drawing 3, Fig. 3 illustrates a kind of line control machine power supply control of multi-connected air conditioning system in the present embodiment
The primary structure of device.As shown in figure 3, the line control machine power supply control apparatus of multi-connected air conditioning system can be random in the present embodiment
Number generation module 11,12 and first power control module 13 of random number timing module.
Specifically, it is provided with and can connect between the multiple indoor units and line control machine in the present embodiment in multi-connected air conditioning system
Supply line.Random number generation module 11 is configurable in multi-connected air conditioning system start-up course, using it is default with
Machine number generation method generates the corresponding random number of each indoor unit.Random number timing module 12 is configurable to according to generating random number
Each random number that module 11 is generated carries out countdown respectively.First power control module 13 is configurable to mould during nonce count
Block 12, if line control machine is non-by electricity condition, controls the corresponding indoor unit of the random number when any random number countdown is completed
Power to line control machine.
Further, line control machine power supply unit further includes the 3rd control module in the present embodiment, and the 3rd control module can
To be configured to after machine is powered to line control machine indoors, by electricity condition judged whether interruption of power supply according to line control machine：
If detecting line control machine to be non-by electricity condition, interrupt the indoor unit and power to line control machine；
If it is by electricity condition to detect line control machine, judge whether the indoor unit is electrically connected with line control machine, if it has not, then interrupting
The indoor unit is powered to line control machine.
Specifically, the 3rd power control module can be electrically connected including the first electrical connection judging unit and second in the present embodiment
Connect judging unit.
First electrical connection judging unit is configurable to perform operations described below：
Control indoor unit to send detection signal to line control machine, and gather the detection signal that line control machine receives；Wherein, supplying
In the case that electric line is line traffic control line, detection signal can be default low and high level pulse signal or digital signal；
Judge that whether indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line control machine if consistent
It is electrically connected, is judged as that the indoor unit is not electrically connected with line control machine if inconsistent.
Second electrical connection judging unit is configurable to perform operations described below：
If indoor unit receives the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is electrically connected with line control machine
Connect；If indoor unit does not receive the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is not electrically connected with line control machine.
Further, random number generation module 11 can generate at random according to the method shown in formula (1) in the present embodiment
Number.
The above-mentioned line control machine power supply unit for multiple electric power system can be used for performing above-mentioned multi-connected air conditioning system
Line control machine method for controlling power supply embodiment, the technique effect of its technical principle, the technical problem solved and generation is similar, institute
Belong to those skilled in the art can be understood that, for convenience and simplicity of description, the multi-connected air conditioner of foregoing description
The specific work process of system and related explanation, the line control machine method for controlling power supply that may be referred to foregoing multi-connected air conditioning system are real
The corresponding process in example is applied, details are not described herein.
Further, also carried based on the above-mentioned line control machine power supply unit embodiment for multiple electric power system, the present invention
A kind of air conditioner has been supplied, which includes the line control machine power supply control apparatus of above-mentioned multiple electric power system, and then when multi-joint
When formula electric power system uses this air conditioner, it is possible to achieve carry out automatic power to line control machine, reduce installation and maintenance difficulty.
It will be understood by those skilled in the art that the line control machine power supply control apparatus of above-mentioned multi-connected air conditioning system further includes one
Other a little known features, such as processor, controller, memory etc., wherein, memory include but not limited to random access memory,
It is flash memory, read-only storage, programmable read only memory, volatile memory, nonvolatile memory, serial storage, parallel
Memory or register etc., processor include but not limited to CPLD/FPGA, DSP, arm processor, MIPS processors etc., in order to
Embodiment of the disclosure is unnecessarily obscured, these known structures are not shown in FIG. 3.
It should be understood that the quantity of the modules in Fig. 3 is only schematical.According to actual needs, each module can be with
With arbitrary quantity.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in claims of the present invention, embodiment claimed
It is one of any mode to use in any combination.
The all parts embodiment of the present invention can be with hardware realization, or to be run on one or more processor
Software module realize, or realized with combinations thereof.It will be understood by those of skill in the art that it can use in practice
Microprocessor or digital signal processor (DSP) realize some in server according to embodiments of the present invention, client
Or some or all functions of whole components.The present invention be also implemented as perform method as described herein one
Partly or completely equipment or program of device (for example, PC programs and PC program products).Such journey for realizing the present invention
Sequence can be stored on PC computer-readable recording mediums, or can have the form of one or more signal.Such signal can be from
Download and obtain on internet website, either provide on carrier signal or provided in the form of any other.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The present invention can be realized by means of including the hardware of some different elements and by means of properly programmed PC.
If in the unit claim for listing equipment for drying, several in these devices can be come specific by same hardware branch
Embody.The use of word first, second, and third does not indicate that any order.These words can be construed to title.
So far, the preferred embodiment shown in the drawings technical solution that the invention has been described, still, this area are had been combined
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make correlation technique feature equivalent change or replacement, these
Technical solution after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
- A kind of 1. line control machine method for controlling power supply of multi-connected air conditioning system, it is characterised in that the multi-connected air conditioning system bag Multiple indoor units are included, and the supply line that can be connected is provided between multiple indoor units and the line control machine；The method Including：In the multi-connected air conditioning system start-up course, each indoor unit pair is generated using default random digit generation method The random number answered；Countdown is carried out respectively according to each random number generated；When any random number countdown is completed, if the line control machine is non-by electricity condition, control the random number corresponding Indoor unit powers the line control machine.
- 2. according to the method described in claim 1, it is characterized in that, " carried out respectively according to each random number generated After the step of countdown ", the method further includes：Before any random number countdown is completed, if the line control machine is by electricity condition, the meter that falls of the random number is interrupted When.
- 3. according to the method described in claim 1, it is characterized in that, after indoor unit is powered to line control machine, middle cut-off is further included The step of electricity judges：If detecting the line control machine to be non-by electricity condition, interrupt the indoor unit and power to line control machine；If it is by electricity condition to detect the line control machine, judge whether the indoor unit is electrically connected with the line control machine, if it has not, then The indoor unit is interrupted to power to line control machine.
- 4. according to the method described in claim 3, it is characterized in that,The step of " judging whether the indoor unit is electrically connected with the line control machine ", specifically includes：Control the indoor unit to send detection signal to line control machine, and gather the detection signal that the line control machine receives；Wherein, exist In the case that the supply line is line traffic control line, the detection signal is default low and high level pulse signal or digital signal；Judge that whether the indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line control machine electricity if consistent Connection, is judged as that the indoor unit is not electrically connected with line control machine if inconsistent；Alternatively,The step of " judging whether the indoor unit is electrically connected with the line control machine ", specifically includes：If the indoor unit receives the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is electrically connected with line control machine；If the indoor unit does not receive the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is not electrically connected with line control machine Connect.
- 5. according to claim 1-4 any one of them methods, it is characterised in that " given birth to using default random digit generation method Into the corresponding random number of each indoor unit " the step of specifically include：Shown method generates the corresponding random number N of each indoor unit according to the following formula：N=a × Tmr+b×ADWherein, the TmrFor preset timer count value, the AD is corresponding to any temperature sensor in current indoor machine AD conversion module output valve, a and b are predetermined coefficient, and a ≠ b.
- 6. the line control machine power supply control apparatus of a kind of multi-connected air conditioning system, it is characterised in that the system comprises multiple interiors Machine, and it is provided with the supply line that can be connected between multiple indoor units and the line control machine；Described device includes：Random number generation module, is configured in the multi-connected air conditioning system start-up course, using default generating random number Method generates the corresponding random number of each indoor unit；Random number timing module, each random number for being configured to be generated according to the random number generation module are fallen respectively Timing；First power control module, is configured to the random number timing module when any random number countdown is completed, if The line control machine is non-by electricity condition, then controls the corresponding indoor unit of the random number to power the line control machine.
- 7. device according to claim 6, it is characterised in that described device further include the second power control module and/or 3rd power control module；Second power control module, is configured to the random number timing module and completes it in any random number countdown Before, if the line control machine is by electricity condition, interrupt the countdown of the random number；3rd power control module, is configured to after machine is powered to line control machine indoors, is sentenced according to line control machine by electricity condition It is disconnected whether interruption of power supply：If detecting the line control machine to be non-by electricity condition, interrupt the indoor unit and power to line control machine；If it is by electricity condition to detect the line control machine, judge whether the indoor unit is electrically connected with the line control machine, if it has not, then The indoor unit is interrupted to power to line control machine.
- 8. device according to claim 7, it is characterised in that the 3rd power control module includes the first electrical connection and sentences Disconnected unit and/or the second electrical connection judging unit；Described first is electrically connected judging unit, is configured to perform operations described below：Control indoor unit to send detection signal to line control machine, and gather the detection signal that the line control machine receives；Judge that whether the indoor unit is sent consistent with the detection signal of collection, is judged as the indoor unit and line control machine if consistent It is electrically connected, is judged as that the indoor unit is not electrically connected with line control machine if inconsistent；Described second is electrically connected judging unit, is configured to perform operations described below：If the indoor unit receives the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is electrically connected with line control machine；If the indoor unit does not receive the confirmation connection signal of line control machine feedback, it is judged as that the indoor unit is not electrically connected with line control machine Connect.
- 9. according to claim 6-8 any one of them devices, it is characterised in that the random number generation module is further, matches somebody with somebody It is set to method generation random number N shown according to the following formula：N=a × Tmr+b×ADWherein, the TmrFor preset timer count value, the AD is the AD corresponding to any temperature sensor in indoor unit The output valve of modular converter, a and b are predetermined coefficient, and a ≠ b.
- 10. a kind of air conditioner, it is characterised in that include the line traffic control of claim 6-9 any one of them multi-connected air conditioning systems Device power supply control apparatus.
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