CN114017899A - Control method for realizing automatic matching and manual setting compatibility of centralized control target address - Google Patents
Control method for realizing automatic matching and manual setting compatibility of centralized control target address Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 35
- 238000004378 air conditioning Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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Abstract
The invention relates to the technical field of multi-connected air conditioner control, and provides a control method compatible with automatic matching and manual setting of a centralized control target address in order to realize automatic and rapid retrieval and matching of the centralized control address, which comprises the following steps: step 1, an integrated controller automatically retrieves an address of an indoor unit; step 2, manually setting the address of the indoor unit which is not retrieved; step 3, reordering the automatically retrieved addresses of the indoor units and the manually set addresses of the indoor units to form an address list and counting the final number of the indoor units; and 4, after the integrated controller determines the addresses and the number of the connected indoor units, sequentially and alternately carrying out normal communication control on the indoor units in the address list. By adopting the mode, the automatic and quick retrieval and matching of the centralized control address are realized.
Description
Technical Field
The invention relates to the technical field of multi-connected air conditioner control, in particular to a control method compatible with automatic matching and manual setting of a centralized control target address.
Background
With social development and technological progress, the multi-split air conditioning system is more and more widely applied, the market proportion is gradually increased, the competition between the multi-split air conditioning technology and the market is more and more intense, and each air conditioner production enterprise invests a large amount of manpower and material resources into the field of multi-split air conditioners. Therefore, it is necessary to make a control technology of a smart multi-split air conditioner, and it is necessary to make personalization as much as possible on the premise of ensuring reliability and comfort, that is, to perform customized design with pertinence according to the market and the requirements of customers, and to perform design from the viewpoints of safe and convenient use, strong experience and the like of users.
In order to achieve the purposes of centralized control, unified management, convenient operation and the like, a multi-split air conditioner used in places such as office buildings, schools, greenhouses and the like at present is generally controlled by using one-to-many centralized controllers, each centralized controller is connected with a plurality of indoor units through a communication bus, data of the indoor units are collected, and the indoor units are controlled. In a multiple on-line system, there are many indoor units, and each indoor unit must have an independent address number that is different from the other indoor units. How the centralized controller establishes corresponding communication links with a plurality of indoor units controlled by the centralized controller, that is, by what method, which indoor units are controlled by the centralized controller (distinguished by addresses of the indoor units) is determined, which is a problem that needs to be considered in software and hardware design when developing multi-split centralized control.
There are many prior art schemes, of which the following two are typical:
1. manually setting the number of indoor units to be controlled by the centralized controller through software setting of the centralized controller; the centralized controller determines the address of the first indoor unit controlled by the centralized controller (namely, the indoor unit with the minimum address number in all indoor units controlled by the centralized controller) in a default mode or a manual setting mode according to the set number; and the centralized controller actively sends data to the indoor units with corresponding addresses for one-time communication from the address of the first controlled unit, and the addresses of the indoor units in the communication data are sequentially increased until the communication of each controlled unit corresponding to the control number is finished, so that one round of communication cycle is completed. This method results in that the addresses of the indoor units controlled by the centralized controller must be continuous, the indoor units with any addresses cannot be controlled, and the number of the indoor units to be controlled must be manually set.
2. Defaulting the maximum number of indoor units needing to be controlled in the software of the integrated controller (such as maximally controlling 16 indoor units); manually inputting the address numbers of all indoor units connected with the communication bus of the centralized controller into a 'control address' setting item of the centralized controller and storing the address numbers into an Eeprom; according to the recorded address information of the indoor units, the centralized controller initiatively sends data to each indoor unit corresponding to the recorded address in sequence from the indoor unit with the smallest address to carry out communication once according to the sequence from the small address to the large address, and finishes a round of communication circulation until the communication with all the indoor units corresponding to the recorded addresses is finished. The method can enable the centralized controller to control the indoor units with any addresses connected with the centralized controller, but the addresses of the indoor units are determined firstly, and then the addresses corresponding to the indoor units are manually input in the setting options of the centralized controller one by one, so that the method is troublesome, time-consuming, labor-consuming and easy to make mistakes.
Disclosure of Invention
In order to realize automatic and rapid retrieval and matching of a centralized control address, the invention provides a control method compatible with automatic matching and manual setting of a centralized control target address.
The technical scheme adopted by the invention for solving the problems is as follows:
the control method for the automatic matching and the manual setting of the centralized control target address comprises the following steps:
step 2, manually setting the address of the indoor unit which is not retrieved;
step 3, reordering the automatically retrieved addresses of the indoor units and the manually set addresses of the indoor units to form an address list and counting the final number of the indoor units;
and 4, after the integrated controller determines the addresses and the number of the connected indoor units, sequentially and alternately carrying out normal communication control on the indoor units in the address list.
Further, the step 1 specifically comprises:
step 11, the centralized controller starts from the first indoor unit to the Nth indoor unit and sends data to the indoor units in sequence in a time-sharing manner, wherein N is the number of the indoor units required by the electric control system;
step 12, after the centralized controller sends data once, receiving return information of the indoor unit, and recording the address of the indoor unit if correct return information of the corresponding indoor unit is received; if the information returned by the corresponding indoor unit is not received or the error information is received, the record is not recorded; and when the integrated controller finishes searching the Nth indoor unit address, finishing one round of address searching communication control.
Further, the centralized controller performs 3-round address retrieval communication control.
Further, the step 2 further comprises: and storing the address of the indoor unit set manually.
Further, the step 3 specifically includes rearranging the automatically retrieved address of the indoor unit, the manually set address of the indoor unit, and the stored address of the indoor unit to form an address list, and counting the final number of the indoor units.
Compared with the prior art, the invention has the beneficial effects that: by designing the functions of automatically retrieving the centralized control address and manually setting the centralized control address in the centralized controller, the problems of large limitation, manual participation, easy error and the like of the traditional control scheme are solved, the automatic and quick retrieval and matching of the centralized control address are realized, the operation link of manually setting parameters is avoided, the convenience and the reliability of installation, use and after-sale are improved, and the user experience is enhanced; the universality, the ductility and the sustainability of the multi-connected series products are enhanced, and the life cycle of the products is prolonged.
Drawings
FIG. 1 is a flow chart of a control method for automatic matching and manual setting of centralized control target addresses;
fig. 2 is a structure diagram of an indoor electric control system of a multi-split air conditioner.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the control method for automatically matching and manually setting the centralized control target address includes:
step 2, manually setting the address of the indoor unit which is not retrieved;
step 3, reordering the automatically retrieved addresses of the indoor units and the manually set addresses of the indoor units to form an address list and counting the final number of the indoor units;
and 4, after the integrated controller determines the addresses and the number of the connected indoor units, sequentially and alternately carrying out normal communication control on the indoor units in the address list.
The existing indoor units are divided into old indoor units and new indoor units, wherein the old indoor unit software does not have response processing matched with the automatic retrieval address communication of the centralized controller, the address of the old indoor unit software cannot be retrieved by the centralized controller, and the address of the new indoor unit software can be retrieved by the centralized controller. Based on the above, the invention provides a method for compatible automatic address matching and manual address setting, which solves the problems of large limitation, manual participation, easy error occurrence and the like of the traditional control scheme, realizes automatic and rapid retrieval and matching of the centralized control address, avoids the operation link of manual parameter setting, and improves the convenience and reliability of installation, use and after-sale.
Specifically, the step 1 specifically comprises:
step 11, the centralized controller starts from the first indoor unit to the Nth indoor unit and sends data to the indoor units in sequence in a time-sharing manner, wherein N is the number of the indoor units required by the electric control system;
step 12, after the centralized controller sends data once, receiving return information of the indoor unit, and recording the address of the indoor unit if correct return information of the corresponding indoor unit is received; if the information returned by the corresponding indoor unit is not received or the error information is received, the record is not recorded; and when the integrated controller finishes searching the Nth indoor unit address, finishing one round of address searching communication control.
In order to avoid missed detection caused by communication interference or poor contact of communication lines, 3 rounds of address retrieval communication control are carried out.
For the convenience of use, avoiding multiple times of manual address setting, and enhancing the universality, extensibility and sustainability of the multiple online series products, the step 2 further comprises: and storing the address of the indoor unit set manually. Correspondingly, the step 3 specifically includes rearranging the automatically retrieved address of the indoor unit, the manually set address of the indoor unit and the stored address of the indoor unit to form an address list and counting the final number of the indoor units.
Examples
The indoor electric control system of the multi-split air conditioner mainly comprises an integrated controller, indoor units and other electric control units, wherein the required number of the indoor units is not more than N, such as: 256, each indoor unit has and only has one non-repeated address number, wherein the address is minimum 1. The centralized controllers are in communication connection with the indoor units in a bus communication mode, each unit connected with a certain bus cannot be overlapped or serially connected with other units connected with the bus, hereinafter, each unit connected with the bus is called a bus unit, each bus unit must have and only has one centralized controller, the other units are the indoor units, the number of the indoor units is M (M is more than or equal to 1 and less than or equal to N), the addresses of the indoor units are not required to be continuous, and a system structure diagram is shown in fig. 2.
The communication data format of the retrieval address sent by the centralized controller is as follows: the indoor set address code + command code + data length identification code + check code. The communication data format of the retrieval address returned by the indoor unit is as follows: the method comprises the steps of integrating an address code of a controller, a command code, a data length identification code, an address code of an indoor unit and a check code.
Taking the commercial multi-split air conditioner in a certain office building as an example, assume that there is a set of commercial multi-split air conditioner indoor electric control system, comprising: the system comprises 13 centralized controllers (hereinafter referred to as centralized controllers) and 221 indoor units (hereinafter referred to as Idu), wherein each Idu has a unique address code, the address codes can be discontinuous and cannot be repeated, a set of commercial mostly online air conditioning system is limited to be capable of being connected with 256 Idu at most, each centralized controller is connected with Idu connected with the centralized controller through a 485 bus to carry out communication, a bus unit is formed, the communication baud rate is 19200bps, only one centralized controller is arranged on each bus unit, and the number of Idu connected with the centralized controller is not more than 32. The hub of each bus unit actively sends data to each Idu connected thereto in turn for time sharing, but Idu do not communicate with each other. The following description will be given taking one of the bus units as an example.
The bus unit is connected with a centralized controller and 16 Idu, wherein 13 new indoor units (the addresses can be searched, and the address numbers are respectively: 1, 2, 3, 4, 13, 26, 52, 78, 117, 143, 150, 195 and 221) and 3 old indoor units (the addresses cannot be searched, and the address numbers are respectively: 16, 82 and 169) in the 16 Idu;
if the bus unit has no old indoor unit, after the target Idu address is automatically searched and matched, the manual address setting operation is not needed.
The control flow is as follows:
1. when the system is initially powered on, the centralized controller reads the address codes of the old version Idu stored in the Eeprom, and if the address codes are read for the first time and the data is not stored in the Eeprom, the read address codes are all 0; if not, the read address code is: 16, 82, 169; executing the step 2;
2. the centralized controller actively sends communication data according to the communication data format of the address retrieval control, and Idu connected to the bus unit is searched from the address 1 to the address 256; if the address retrieval of 3 rounds is not finished, executing 3; otherwise, executing 7;
3. after the centralized controller finishes sending the address retrieval data once, waiting for a certain time, and executing 4 after receiving correct communication data returned by Idu corresponding to the address; if the Idu returned data corresponding to the address is not received or the received communication data is not correct, executing step 6;
4. the centralized controller saves the Idu address into a cache array, and executes 5;
5. in each round of retrieval process, operating the stored address data, covering repeated addresses, reserving uniqueness, and executing 6;
6. the centralized controller sends address retrieval data to retrieve Idu of the next address, thus sequentially retrieving the 256 th address, and after completing one round of address retrieval, executing 2;
7. and completing address retrieval communication control, and merging all the retrieved Idu addresses of the new version with Idu addresses of the old version read in Eeprom. If the Eeprom is read for the first time, the read data are all 0, after combination, the data are sorted according to the sequence of addresses from low to high, and the address numbers after sorting are respectively: 1, 2, 3, 4, 13, 26, 52, 78, 117, 143, 150, 195, 221, forming an address list a of targets Idu, counting Idu searched statistically to 13, and executing 8; if not, reading the address code of the Eeprom as follows: 16, 82 and 169, and sorting the merged addresses in the order from low to high, wherein the address numbers after sorting are respectively as follows: 1, 2, 3, 4, 13, 16, 26, 52, 78, 82, 117, 143, 150, 169, 195, 221, forming a new target Idu address list a, counting Idu with 16, performing 10;
8. manually entering a 'centralized control target address setting function' interface of a centralized controller, wherein the centralized control address codes inquired after entering the interface are respectively as follows: 1, 2, 3, 4, 13, 26, 52, 78, 117, 143, 150, 195, 221, and thereafter supplementing 16, 82, 169 three old version indoor unit addresses by manual setting, and performing 9;
9. setting to take effect after exiting the interface of the centralized control target address setting function; all new versions Idu addresses retrieved are merged with the old version Idu addresses set manually. After merging, sorting the merged addresses in the sequence from low to high, wherein the address numbers after sorting are respectively as follows: 1, 2, 3, 4, 13, 16, 26, 52, 78, 82, 117, 143, 150, 169, 195, 221, forming a new target Idu address list a, counting Idu with 16; meanwhile, after subtracting the automatically retrieved new version Idu address from the new target Idu address list, storing the new target Idu address list into an old version Idu address list B, and storing the address in the list B into Eeprom, namely storing the manually set address of the indoor unit; execution 10;
10. and according to the Idu address coding sequence sorted in the list A, the centralized controller performs normal communication with each Idu corresponding to the address list.
Claims (5)
1. The control method for realizing automatic matching and manual setting compatibility of the centralized control target address is characterized by comprising the following steps of:
step 1, an integrated controller automatically retrieves an address of an indoor unit;
step 2, manually setting the address of the indoor unit which is not retrieved;
step 3, reordering the automatically retrieved addresses of the indoor units and the manually set addresses of the indoor units to form an address list and counting the final number of the indoor units;
and 4, after the integrated controller determines the addresses and the number of the connected indoor units, sequentially and alternately carrying out normal communication control on the indoor units in the address list.
2. The control method for automatic matching of centralized control target address and compatible with manual setting according to claim 1, wherein the step 1 specifically comprises:
step 11, the centralized controller starts from the first indoor unit to the Nth indoor unit and sends data to the indoor units in sequence in a time-sharing manner, wherein N is the number of the indoor units required by the electric control system;
step 12, after the centralized controller sends data once, receiving return information of the indoor unit, and recording the address of the indoor unit if correct return information of the corresponding indoor unit is received; if the information returned by the corresponding indoor unit is not received or the error information is received, the record is not recorded; and when the integrated controller finishes searching the Nth indoor unit address, finishing one round of address searching communication control.
3. The centralized control target address automatic matching and manual setting compatible control method as claimed in claim 2, wherein the centralized controller performs 3-round address retrieval communication control.
4. The centralized control target address automatic matching and manual setting compatible control method according to claim 1, wherein the step 2 further comprises: and storing the address of the indoor unit set manually.
5. The control method according to claim 4, wherein the step 3 is to reorder the automatically retrieved indoor set addresses, the manually set indoor set addresses, and the stored indoor set addresses to form an address list and count the final number of indoor sets.
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