CN106452671A - Internal unit and external unit communication method of multi-split air-conditioner - Google Patents
Internal unit and external unit communication method of multi-split air-conditioner Download PDFInfo
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- CN106452671A CN106452671A CN201610856948.6A CN201610856948A CN106452671A CN 106452671 A CN106452671 A CN 106452671A CN 201610856948 A CN201610856948 A CN 201610856948A CN 106452671 A CN106452671 A CN 106452671A
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- communication
- machine
- speed
- outer machine
- interior
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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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
-
- 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
-
- 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
Abstract
The invention discloses an internal unit and external unit communication method of a multi-split air-conditioner. The method comprises the following steps: (1) an external unit selects one communication speed value from a speed set as the external unit initial speed, and sends an external unit data frame to an internal unit through a communication bus according to the external unit initial speed; (2) the internal unit detects the communication speed of the external unit, and orderly sends respective data frame to the external unit according to the detected speed; (3) the external unit computes the bus communication accuracy within a set duration T0; and (4) the external unit adjusts the communication speed according to the bus communication accuracy. Through the adoption of the internal unit and external unit communication method of the multi-split air-conditioner, the communication speed of the internal unit and the external unit can be automatically selected according to a site communication quality status and can be automatically adjusted along the environmental change without manually setting; the most suitable communication speed can be automatically selected, the communication time is shortened in the premise of guaranteeing the communication quality, and the system response speed is improved.
Description
Technical field
The invention belongs to air-conditioning communication technical field, specifically, relate to a kind of multi-connected machine internal-external machine communication means.
Background technology
In multiple on-line system, usual outer machine connects multiple interior machine, and every interior machine comprises temperature, the various sensor of humidity, valve
Deng parameter.Taking turns in communication one, outer machine is main equipment, after oneself data or instruction are dealt on communication bus, in every
Wheel stream is dealt into the data of oneself on communication bus and carries out response, is received by outer machine testing.Owing to interior board number is many, internal-external machine
One takes turns call duration time can be long, how on the premise of ensureing communication quality, do not change hardware, promotes internal-external machine communication speed
Become Research Emphasis.
Current common practice is, first manually arranges communication speed according to on-the-spot actual installation environment in internal-external machine, then
Internal-external machine communicates according to this fixed speed, if finding improper in Yun Zhuan, again manually adjusts communication speed.This kind
Mode operates complexity, and cost is higher, even if debugged at that time qualified after, when system running environment change or by some equipment do
When disturbing, there is inappropriate situation in the communication speed that may originally mix up, have impact on communication quality.
Content of the invention
The present invention is to solve that in existing multiple on-line system, communication speed adjusts inconvenience, be easily subject to interference effect communication
The problem of quality, it is proposed that a kind of multi-connected machine internal-external machine communication means, can solve the problems referred to above.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions：
A kind of multi-connected machine internal-external machine communication means, described multi-connected machine includes an outer machine and multiple interior machine, described outer machine and interior machine
The middle speed collection that is stored with respectively, includes several communication speed values in described speed collection；Described communication means comprises the following steps：
（1）, power on after, outer machine is concentrated from described speed and is selected one of them communication speed value as outer machine initial velocity, and presses
According to this outer machine initial velocity, outer machine Frame is sent to interior machine by communication bus；
（2）, the communication speed of the outer machine of interior machine testing, then according to the speed detecting is issued respective Frame described successively
Outer machine；
（3）, after all interior machines are all sent, outer machine starts the communication of a new round, until communication time reaches to set duration T0,
Outer machine calculates the bus communication accuracy setting in duration T0；
（4）, described bus communication accuracy compares, under described communication quality threshold includes by outer machine with communication quality threshold
Limit value M1 and upper limit value M 2, if bus communication accuracy is more than upper limit value M 2, then outer machine carries on the basis of present communications speed
High communication speed carries out the communication of next round, returns step（2）If bus communication accuracy is less than lower limit M1, then outer machine exists
Reduce the communication that communication speed carries out next round on the basis of present communications speed, return step（2）.
Further, step（3）In, the computational methods of described bus communication accuracy are：Outer machine has often sent a frame number
According to frame, interior chance carries out response, completes one and takes turns communication, counts and takes turns in communication one, is capable of the quantity of the correct interior machine of response,
If all correct response of all interior machines and for once replying, then correct response times M is increased by 1, count and setting duration
In T0, complete N wheel communication and correct response times M altogether, calculate bus communication accuracy：
Bus communication accuracy=M ÷ N.
Further, step（2）In the method for communication speed of the outer machine of interior machine testing be：
Interior prow first concentrates a selected communication speed value as interior machine initial velocity from speed, and during setting speed switching
Between, first press interior machine initial velocity, according to communication word section format, the outer machine Frame receiving is detected, and judge to be detected
Outer machine Frame whether correct, if correctly, this interior machine initial velocity is i.e. judged as the communication speed of outer machine, and keeps this interior
Machine initial velocity and outer machine communication；If incorrect, then, after arrival rate switching time, the another one that switch speed is concentrated is led to
Letter speed, detects again, until can be correctly detecting outer machine Frame according to present communications speed, and judges current logical
Letter speed is the communication speed of outer machine, keeps present communications speed and outer machine communication.
Further, when described speed is concentrated and had odd number communication speed value, by communication speed value according to ascending order or
Person's descending, the selected communication speed value being positioned at centre, as outer machine initial velocity, is concentrated when described speed and is had even number
It during communication speed value, by communication speed value according to ascending order or descending, is positioned in two communication speed values of centre selected
One of them is as outer machine initial velocity.
Further, described interior machine initial velocity is consistent with outer machine initial velocity.
Further, described outer machine initial velocity is written in the EEPROM of outer machine, and described interior machine initial velocity is written in
In the EEPROM of interior machine.
Further, step（4）Also include the step updating outer machine initial velocity and interior machine initial velocity afterwards, if bus
Communication accuracy is between lower limit M1 and upper limit value M 2, then outer machine keeps present communications speed to carry out the communication of next round,
And, current communication speed is respectively outer machine initial velocity and interior machine initial velocity, the EEPROM of corresponding write to outer machine
With in the EEPROM of interior machine.
Compared with prior art, advantages of the present invention and good effect are：The multi-connected machine internal-external machine communication means of the present invention,
Internal-external machine communication speed can be automatically selected according to on-scene communication quality condition, as the change of environment adjusts automatically, it is not necessary to
Arrange manually, can realize automatically selecting most suitable communication speed, when shortening communication on the premise of ensureing communication quality
Between, improve system response time.
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become more
Add clear.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the accompanying drawing of required use is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, all right
Obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of embodiment flow chart of multi-connected machine internal-external machine communication means proposed by the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of multi-connected machine internal-external machine communication means, and this multi-connected machine includes an outer machine
With multiple interior machines, passing through bus communication between an outer machine and multiple interior machine, be stored with in machine and interior machine speed collection outside respectively,
Several communication speed values are included in speed collection；As it is shown in figure 1, described communication means comprises the following steps：
S1, power on after, outer machine from speed concentrate select one of them communication speed value as outer machine initial velocity and outer according to this
Machine initial velocity is sent to interior machine outer machine Frame by communication bus；
The communication speed of the outer machine of S2, interior machine testing, then according to the speed detecting is issued respective Frame described successively
Outer machine；
After S3, all interior machines are all sent, outer machine starts the communication of a new round, until communication time reaches to set duration T0,
Outer machine calculates the bus communication accuracy setting in duration T0；
Described bus communication accuracy is compared by S4, outer machine with communication quality threshold, under described communication quality threshold includes
Limit value M1 and upper limit value M 2, if bus communication accuracy is more than upper limit value M 2, then outer machine carries on the basis of present communications speed
High communication speed carries out the communication of next round, returns step S2, if bus communication accuracy is less than lower limit M1, then outer machine is being worked as
Reduce the communication that communication speed carries out next round on the basis of front communication speed, return step S2.
Multi-connected machine internal-external machine communication is generally divided into wired, wireless, wire and wireless mixed connection three kinds, and conventional communication speed has
Above-mentioned communication speed value is saved in speed and concentrates by 2400bps, 4800bps, 9600bps and 19200bps, it is of course possible to according to
The numerical value that speed is concentrated by actual conditions carries out additions and deletions, is not limited to the example above, and outer machine determines the communication speed in internal-external machine bus
Degree, after powering on, outer machine first selects one of them speed, in outer machine Frame being sent to by communication bus according to this speed
Machine, interior machine detects the communication speed of outer machine by certain algorithm, then according to the speed of detection is successively the Frame of oneself
Issue outer machine, detect with the communication quality of this communication speed communication, and be adjusted.This method can be according to on-scene communication
Quality condition, automatically selects internal-external machine communication speed, as the change of environment adjusts automatically, it is not necessary to arrange manually, and can
Realization automatically selects most suitable communication speed, because speed is faster, experienced interference noise is bigger, under respective communication quality
Fall, this method can improve communication speed on the premise of ensureing communication quality, and then shorten call duration time, improve system response
Speed, whole adjustment process is full-automatic, it is not necessary to manual hand manipulation, very convenient.
As a preferred embodiment, in step S3, the computational methods of bus communication accuracy are：Outer machine has often sent
One frame data frame, interior chance carries out response, completes one and takes turns communication, counts and takes turns in communication one, is capable of the interior machine of correct response
Quantity, if all correct response of all interior machines and for once replying, then correct response times M is increased by 1, counts and setting
Regularly in long T0, complete N wheel communication and correct response times M altogether, calculate bus communication accuracy：
Bus communication accuracy=M ÷ N.
As set duration T0 as 30 minutes, this time period, outer machine have sent 1500 secondary data altogether, the correct response time of interior machine
Number is 1200 times, then bus communication accuracy=1200 ÷ 1500=80%, and bus communication accuracy reflects bus communication quality.
This method each is taken turns in communication by statistics, all correct response of only all interior machines and just sentencing when for once replying
Being set to interior machine in communication of taking turns is correct response, by the correct response rate of calculating, namely bus communication accuracy, logical as judging
The evaluation method of letter quality so that the raising communication speed that this method can be maximum on the premise of ensureing communication quality, finally
Realize the balance of communication speed and communication quality.
Owing to outer machine can select multiple communication speed, and communication speed occurs at any time with the change of communication quality
Change, therefore, often in wheel communication, the communication speed of outer machine is unknown for interior machine, in order to keep internal-external machine to communicate
Uniformity, interior machine needs the communication speed of the outer machine of detection, and carries out response with this speed equally, therefore, incites somebody to action for internal machine
Can increase amount of calculation, tool acquires a certain degree of difficulty, and delays the answer speed of interior machine to not make this step cause, and the present embodiment preferably walks
In rapid S2, the method for the communication speed of the outer machine of interior machine testing is：
Interior prow first concentrates a selected communication speed value as interior machine initial velocity from speed, and during setting speed switching
Between, first press interior machine initial velocity, according to communication word section format, the outer machine Frame receiving is detected, and judge to be detected
Outer machine Frame whether correct, if correctly, this interior machine initial velocity is i.e. judged as the communication speed of outer machine, and keeps this interior
Machine initial velocity and outer machine communication；If incorrect, then, after arrival rate switching time, the another one that switch speed is concentrated is led to
Letter speed, detects again, until can be correctly detecting outer machine Frame according to present communications speed, and judges current logical
Letter speed is the communication speed of outer machine, keeps present communications speed and outer machine communication.If interior machine detection present communications speed is not just
Really, according to the next communication speed of order switching being incremented by or successively decreasing.
Although the communication speed of outer machine can change, but internal-external machine communication format is fixing, each byte that communicates
Have start bit, data bit, parity check bit and stopping position.When interior machine first makes an initial communication speed and speed switching by oneself
Between, determine 9600bps as before, the speed automatic switchover time is 2 seconds.In 1st 2 second time, by this initial 9600bps communication
Speed, sees that according to communication word section format can the communication data that detect outer machine correct.If it correct, is maintained for this communication speed
With outer machine communication；If incorrect, then 2 seconds rear cutout change next communication speed 19200bps, again detect whether correct, if
Still incorrect, switch to 2400bps communication speed after 2 seconds again.It is repeatedly detected judgement successively, until can keep correct logical with outer machine
Till letter.If this normal communication speed is stored in the EEPROM of interior machine, then first according to interior machine after interior machine power-off powers on again
Communication speed in EEPROM and outer machine communication.
When system initially sets outer machine initial velocity, when described speed is concentrated and is had odd number communication speed value, will be logical
Letter velocity amplitude is according to ascending order or descending, and the selected communication speed value being positioned at centre is as outer machine initial velocity, when described
Speed is concentrated when having even number communication speed value, by communication speed value according to ascending order or descending, is positioned at the two of centre
Individual communication speed value is selected one of them as outer machine initial velocity.
Generally, the communication speed of internal-external machine is for according under current working environment and ensure optimal communication quality
Communication speed determined by under the premise of, may be close with previous operating mode in view of current working environment when again starting shooting, most preferably
Communication speed may be also close, also includes the step updating outer machine initial velocity and interior machine initial velocity, if always after step S4
Line communication accuracy is between lower limit M1 and upper limit value M 2, then outer machine keeps present communications speed to carry out the logical of next round
Letter, and, current communication speed is respectively outer machine initial velocity and interior machine initial velocity, writes to outer machine accordingly
In the EEPROM of EEPROM and interior machine.When again starting shooting, outer chance above suboptimum communication speed is carried out as initial velocity
Communication, and then the time of detection optimal communication speed can be reduced.
In order to reduce power on after the communication speed of the outer machine of interior prow time detection, at the beginning of preferably described interior machine initial velocity and outer machine
Beginning speed is consistent.
Outer machine initial velocity is written in the EEPROM of outer machine, and described interior machine initial velocity is written in the EEPROM of interior machine
In.After powering on every time, outer machine and interior machine are transferred the initial velocity being stored in its EEPROM respectively and are carried out internal-external machine communication.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change, remodeling, interpolation or the replacement that the those of ordinary skill in territory is made in the essential scope of the present invention, also should belong to this
Bright protection domain.
Claims (7)
1. a multi-connected machine internal-external machine communication means, it is characterised in that described multi-connected machine includes an outer machine and multiple interior machine, institute
State the speed collection that is stored with respectively in outer machine and interior machine, in described speed collection, include several communication speed values；Described communication means
Comprise the following steps：
（1）, power on after, outer machine is concentrated from described speed and is selected one of them communication speed value as outer machine initial velocity, and presses
According to this outer machine initial velocity, outer machine Frame is sent to interior machine by communication bus；
（2）, the communication speed of the outer machine of interior machine testing, then according to the speed detecting is issued respective Frame described successively
Outer machine；
（3）, after all interior machines are all sent, outer machine starts the communication of a new round, until communication time reaches to set duration T0,
Outer machine calculates the bus communication accuracy setting in duration T0；
（4）, described bus communication accuracy compares, under described communication quality threshold includes by outer machine with communication quality threshold
Limit value M1 and upper limit value M 2, if bus communication accuracy is more than upper limit value M 2, then outer machine carries on the basis of present communications speed
High communication speed carries out the communication of next round, returns step（2）If bus communication accuracy is less than lower limit M1, then outer machine exists
Reduce the communication that communication speed carries out next round on the basis of present communications speed, return step（2）.
2. multi-connected machine internal-external machine communication means according to claim 1, it is characterised in that step（3）In, described bus is led to
The computational methods of letter accuracy are：Outer machine has often sent a frame data frame, and interior chance carries out response, completes one and takes turns communication, statistics
Go out and take turns in communication one, be capable of the quantity of the correct interior machine of response, if all correct response of all interior machines and for once replying,
Then correct response times M is increased by 1, counts in setting duration T0, complete N wheel communication and correct response times M altogether,
Calculate bus communication accuracy：
Bus communication accuracy=M ÷ N.
3. multi-connected machine internal-external machine communication means according to claim 1, it is characterised in that step（2）In outside interior machine testing
The method of the communication speed of machine is：
Interior prow first concentrates a selected communication speed value as interior machine initial velocity from speed, and during setting speed switching
Between, first press interior machine initial velocity, according to communication word section format, the outer machine Frame receiving is detected, and judge to be detected
Outer machine Frame whether correct, if correctly, this interior machine initial velocity is i.e. judged as the communication speed of outer machine, and keeps this interior
Machine initial velocity and outer machine communication；If incorrect, then, after arrival rate switching time, the another one that switch speed is concentrated is led to
Letter speed, detects again, until can be correctly detecting outer machine Frame according to present communications speed, and judges current logical
Letter speed is the communication speed of outer machine, keeps present communications speed and outer machine communication.
4. multi-connected machine internal-external machine communication means according to claim 3, it is characterised in that concentrate when described speed and have very
During several communication speed value, by communication speed value according to ascending order or descending, the selected communication speed value being positioned at centre is made
For outer machine initial velocity, when described speed is concentrated and is had even number communication speed value, by communication speed value according to ascending order or
Descending, is positioned in two communication speed values of centre and selectes one of them as outer machine initial velocity.
5. multi-connected machine internal-external machine communication means according to claim 4, it is characterised in that described interior machine initial velocity is with outward
Machine initial velocity is consistent.
6. multi-connected machine internal-external machine communication means according to claim 5, it is characterised in that described outer machine initial velocity writes
Outside in the EEPROM of machine, described interior machine initial velocity is written in the EEPROM of interior machine.
7. multi-connected machine internal-external machine communication means according to claim 6, it is characterised in that step（4）Also include afterwards more
New outer machine initial velocity and the step of interior machine initial velocity, if bus communication accuracy between lower limit M1 and upper limit value M 2 it
Between, then outer machine keeps present communications speed to carry out the communication of next round, and, current communication speed is respectively outer machine initial
In speed and interior machine initial velocity, the EEPROM of corresponding write to outer machine and the EEPROM of interior machine.
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| CN111835609A (en) * | 2020-05-28 | 2020-10-27 | 珠海格力电器股份有限公司 | Bus resource allocation method and device and air conditioning system |
| CN112013506A (en) * | 2019-05-31 | 2020-12-01 | 青岛海尔空调电子有限公司 | Communication detection method and device and air conditioner |
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