CN109654667B - Address allocation method and system based on CAN bus and air conditioner - Google Patents
Address allocation method and system based on CAN bus and air conditioner Download PDFInfo
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- CN109654667B CN109654667B CN201811369034.2A CN201811369034A CN109654667B CN 109654667 B CN109654667 B CN 109654667B CN 201811369034 A CN201811369034 A CN 201811369034A CN 109654667 B CN109654667 B CN 109654667B
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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
Abstract
The application relates to an address allocation method and system based on a CAN bus and an air conditioner, wherein the method comprises the following steps: allocating an address for the target equipment on the CAN bus by using a preset address allocation strategy; judging whether the address allocated to the target equipment meets a preset condition or not; and when the address allocated to the target equipment does not meet the preset condition, adjusting the preset address allocation strategy. Compared with the prior art that the function of the equipment on the whole CAN bus is influenced due to the wrong address allocation, the method and the device solve the problem of setting the identity address of the equipment on the CAN bus by the technical scheme with high feasibility, and improve the accuracy rate of the address allocation of the equipment and the stability of the operation of the equipment.
Description
Technical Field
The application relates to the field of smart home, in particular to an address allocation method and system based on a CAN bus and an air conditioner.
Background
Along with the rapid development of intelligent house, bring more and more convenience for people's daily life, wherein, the air conditioner is in intelligent house, heats the performance of keeping warm in winter and heating in summer and relieving summer heat and cooling and receives user's favor because of it, brings the facility for the family life.
The household multi-split air conditioner adopting the CAN bus communication has one outer unit device and a plurality of inner units, and each inner unit and each outer unit are communicated through corresponding pipelines, so that the outer unit and the inner units of the household multi-split air conditioner CAN normally operate the household multi-split air conditioner on the same CAN bus only by having the unique identity addresses on the CAN bus.
Moreover, the identity addresses of the pipelines and the internal machines are required to be in one-to-one correspondence, otherwise, the pipelines A may be connected with the internal machines A, but the identity addresses of the pipelines A and the internal machines A do not correspond, so that the pipelines B are influenced when the internal machines A are controlled, the normal refrigeration and heating functions of the air conditioner cannot be realized by the internal machines A, and even the functions of the external machines and the internal machines on the whole CAN bus CAN be influenced.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the application provides an address allocation method and system based on a CAN bus and an air conditioner.
In a first aspect, the present application provides a method for address assignment based on a CAN bus, including:
allocating an address for the target equipment on the CAN bus by using a preset address allocation strategy;
judging whether the address allocated to the target equipment meets a preset condition or not;
and when the address allocated to the target equipment does not meet the preset condition, adjusting the preset address allocation strategy.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes: and when the address allocated to the target equipment meets a preset condition, displaying the address allocated to the target equipment.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the allocating an address to a target device on the CAN bus by using a preset address allocation policy includes:
judging whether the target equipment meets a preset operation condition or not;
and when the target equipment meets the preset operation condition, allocating an address for the target equipment.
With reference to the first aspect, in a third possible implementation manner of the first aspect, the determining whether the target device meets a preset operation condition includes:
judging whether the operation time length of the target equipment meets a preset operation time length or not;
and when the running time length of the target equipment meets the preset running time length, determining that the target equipment meets the preset running condition.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the determining whether the target device meets a preset operation condition includes:
judging whether the running state of the target equipment meets a preset running state or not;
and when the running state of the target equipment meets the preset running state, determining that the target equipment meets the preset running condition.
With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the allocating an address to the target device includes:
and allocating addresses to the target equipment through the remote control equipment according to a preset allocation mode.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the determining is performed
Whether the address allocated to the target device meets a preset condition or not comprises the following steps:
counting the distribution times of the historical addresses;
judging whether the historical address distribution times are larger than or equal to a distribution threshold value or not;
and when the historical address allocation times is larger than or equal to the allocation threshold, determining that the address allocated to the target device does not meet the preset condition.
With reference to the first aspect, in a seventh possible implementation manner of the first aspect, the key is
When the address allocated by the target equipment does not meet the preset condition, adjusting the preset address
An allocation policy comprising:
displaying, by the target device, an address overflow fault code;
and reallocating the address for the target equipment, and executing the step of judging whether the address allocated to the target equipment meets the preset condition.
With reference to the first aspect, in an eighth possible implementation manner of the first aspect, the determining whether an address allocated to the target device meets a preset condition includes:
judging whether a device with the same address as the address allocated to the target device is detected;
and when the device with the same address as the address allocated to the target device is detected, determining that the address allocated to the target device does not meet the preset condition.
With reference to the first aspect, in a ninth possible implementation manner of the first aspect, the adjusting the preset address allocation policy when the address allocated to the target device does not satisfy a preset condition includes:
displaying an address duplication fault code by the target device and a device having the same address to which the target device is assigned;
reallocating addresses to the target devices;
judging whether a device with the same address as the address reallocated to the target device is detected or not within a preset time period;
and when the device with the same address as the address reassigned by the target device is not detected, canceling the address repeated fault code display, and executing the step of judging whether the address assigned by the target device meets the preset condition.
In a second aspect, the present application provides an air conditioner, including a memory and a processor, where the memory stores a CAN bus-based address assignment program executable on the processor, and the CAN bus-based address assignment program implements the steps of the CAN bus-based address assignment method according to the first aspect when executed by the processor.
In a third aspect, the present application provides a CAN bus-based address allocation system applied to the air conditioner according to the second aspect, the system comprising:
the address distribution module is configured to distribute addresses to target equipment on the CAN bus by using a preset address distribution strategy;
the judging module is configured to judge whether the address allocated to the target device meets a preset condition;
and the strategy adjusting module is configured to adjust the preset address allocation strategy when the address allocated to the target device does not meet the preset condition.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the method provided by the embodiment of the application allocates the address for the target equipment on the CAN bus, automatically judges the allocated address, judges whether the allocation of the address meets the preset condition, if not, indicates that the allocation of the address is wrong, needs to adjust the address allocation strategy, and allocates the address for the target equipment again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of an address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 2 is a flowchart of another address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 3 is a flowchart of another address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 4 is a flowchart of another address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 5 is a flowchart of another address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 6 is a flowchart of another address assignment method based on a CAN bus according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another address allocation system based on a CAN bus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of an address assignment method based on a CAN bus according to an embodiment of the present disclosure, where the method may be applied to a multi-split air conditioner using CAN bus communication, where the multi-split air conditioner is composed of multiple air conditioners, and each air conditioner needs to be marked by a unique device identity address, as shown in fig. 1, the method may include the following steps:
s101, allocating addresses to target equipment on the CAN bus by using a preset address allocation strategy.
S102, judging whether the address allocated to the target device meets a preset condition, if so, turning to the step S103, otherwise, turning to the step S104.
And S103, displaying the address allocated to the target equipment.
And S104, adjusting a preset address allocation strategy.
For example, since the air conditioning equipment may have a standard remote controller, and the remote controller is provided with various keys such as temperature, wind speed, mode, and switch, of course, the remote controller of the air conditioner may also be replaced by another dedicated remote controller for equipment identity address allocation or an intelligent terminal APP with a remote control function, which is not limited in this application. The method is based on the keys of the existing remote controller, and on the premise of not increasing extra cost, the address of the air conditioning equipment is allocated by the existing remote controller, and the allocation mode comprises but is not limited to the following methods:
as shown in fig. 2, in another embodiment of the present application, the step S101 of allocating an address to a target device on the CAN bus by using a preset address allocation policy specifically includes the following steps:
and S1011, judging whether the target equipment meets the preset operation condition.
And S1012, when the target equipment meets the preset operation condition, allocating an address to the target equipment.
As shown in fig. 3, in another embodiment of the present application, the step S1011 of determining whether the target device meets the preset operation condition specifically includes the following steps:
s10111, judging whether the running time of the target device meets the preset running time.
S10112, when the running time of the target device meets the preset running time, determining that the target device meets the preset running condition.
In the embodiment, the address of the equipment is effectively allocated within X (X >0) minutes after the air conditioner is powered on, so that the air conditioner is prevented from being manually and mistakenly operated to enter the address allocation mode after the air conditioner normally operates.
As shown in fig. 4, in another embodiment of the present application, the step S1011 of determining whether the target device meets the preset operation condition specifically includes the following steps:
s101111, judging whether the operation state of the target device meets the preset operation state.
S101112, when the operation state of the target device satisfies the preset operation state, determining that the target device satisfies the preset operation condition.
In the above embodiments, the air conditioning equipment of the present application is allowed to enter the address allocation mode only in a specific operating state, where the specific operating state may be a high-windshield with cooling function when the air conditioning equipment is started, or a more complex operating state, such as a high-windshield with cooling function when the air conditioning equipment is started and the air sweeping operation swings, and the like.
In another embodiment of the present application, the allocating an address to the target device in step S1012 includes: and allocating the address to the target equipment according to a preset allocation mode through the remote control equipment.
In the above embodiment, when the air conditioning equipment meets the preset operation duration or the preset operation state, the address of the air conditioning equipment is allocated in a preset allocation manner through the remote control equipment, for example, 8 times of pressing the wind speed key within 5 seconds is set, and then the address is allocated in combination with the set temperature, for example, the equipment address set by 8 times of pressing the wind speed key within 5 seconds at the set temperature of 16 degrees is a, the equipment address set by 8 times of pressing the wind speed key within 5 seconds at the set temperature of 17 degrees is b.
In the above embodiment, although the air conditioners are assigned in multiple address assignment manners, sometimes an artificial address assignment error occurs, for example, addresses assigned by two air conditioners are duplicated, or assigned addresses exceed an address assignment range, so a mechanism for automatically determining whether the air conditioner address assignment is incorrect needs to be added to the device address assignment, and the specific implementation scheme is as follows:
as shown in fig. 5, in another embodiment of the present application, the step S102 of determining whether the address allocated to the target device meets the preset condition specifically includes the following steps:
and S1021, counting the distribution times of the historical addresses.
S1022, judging whether the distribution times of the historical addresses are larger than or equal to the distribution threshold value or not, and turning to the step S1023 when the distribution times of the historical addresses are larger than or equal to the distribution threshold value; and when the historical address allocation times is less than the allocation threshold value, the step S1024 is executed.
And S1023, determining that the address allocated to the target device does not meet the preset condition.
And S1024, determining that the address allocated to the target device meets a preset condition.
In another embodiment of the present application, in the step S103, when the address allocated to the target device does not satisfy the preset condition, adjusting the preset address allocation policy specifically includes the following steps: displaying an address overflow fault code by the target device; and reallocating the address for the target equipment, and executing the step of judging whether the address allocated to the target equipment meets the preset condition.
In the above embodiment, for the determination method of the address overflow allocated to the air-conditioning equipment, since the total number of the air-conditioning equipment of the air-conditioning multi-split air-conditioning system is reported after the communication is established after the power is turned on, each air-conditioning equipment can know the total number of the air-conditioning equipment, so that when each air-conditioning equipment performs address allocation, whether the currently set address exceeds the total number of the air-conditioning equipment or not can be automatically identified, if the currently set address exceeds the total number of the air-conditioning equipment, the air-conditioning equipment displays an address overflow fault code, and if the currently set address does not exceed the total number of the air.
As shown in fig. 6, in another embodiment of the present application, the step S102 of determining whether the address allocated to the target device meets the preset condition specifically includes the following steps:
s10211, determine whether the same device as the address to which the target device is assigned is detected.
S10212, determining that the address assigned to the target device does not satisfy a preset condition when the same device as the address assigned to the target device is detected.
In another embodiment of the present application, in step S103, when the address allocated to the target device does not satisfy the preset condition, adjusting the preset address allocation policy specifically includes: displaying an address duplication fault code by the target device and a device having the same address to which the target device is assigned; reallocating addresses to the target devices; judging whether a device with the same address as the address redistributed to the target device is detected or not within a preset time period; and when the device with the same address as the address reassigned by the target device is not detected, canceling the address repeated fault code display, and executing the step of judging whether the address assigned by the target device meets the preset condition.
In the above embodiment, for the determination method for address duplication allocated to the air-conditioning equipment, because all the air-conditioning equipment are on the CAN bus, each air-conditioning equipment CAN monitor information of other air-conditioning equipment, including the address allocated to the air-conditioning equipment, so that each air-conditioning equipment CAN automatically determine whether the address of the other air-conditioning equipment is the same as that of the air-conditioning equipment after the address allocation is completed, and once the air-conditioning equipment allocated with the same address is detected, all the air-conditioning equipment with the same address displays an address duplication fault code; after the address repeated fault code occurs, if the air conditioner with the same address is not detected in a continuous preset time period (within Y seconds), the identity address repeated fault is recovered, and the time for sending the information in the preset time period Y seconds is greater than the time for the air conditioner to send the information at regular time.
An embodiment of the present application further provides an air conditioner, including a memory and a processor, where the memory stores a CAN bus-based address allocation program that CAN be executed on the processor, and the address allocation program based on the CAN bus is executed by the processor to implement the steps of the CAN bus-based address allocation method shown in fig. 1 to 6.
As shown in fig. 7, an embodiment of the present application further provides an address allocation system based on a CAN bus, which is applied to the air conditioner described above, and the system includes:
the address allocation module 11 is configured to allocate an address to a target device on the CAN bus by using a preset address allocation policy;
the judging module 12 is configured to judge whether the address allocated to the target device meets a preset condition;
and the policy adjusting module 13 is configured to adjust a preset address allocation policy when the address allocated to the target device does not satisfy a preset condition.
The address is allocated to the target device on the CAN bus, the allocated address is automatically judged, whether the address allocation meets the preset condition is judged, if not, the address allocation is wrong, the address allocation strategy needs to be adjusted, and the address is allocated to the target device again.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. An address allocation method based on a CAN bus is characterized by comprising the following steps:
allocating an address to a target device on the CAN bus by using a preset address allocation strategy, wherein the address allocation strategy comprises the following steps:
judging whether the target equipment meets a preset operation condition or not;
when the target equipment meets the preset operation condition, allocating an address for the target equipment;
judging whether the address allocated to the target equipment meets a preset condition or not;
and when the address allocated to the target equipment does not meet the preset condition, adjusting the preset address allocation strategy.
2. The CAN-bus-based address assignment method according to claim 1, further comprising: and when the address allocated to the target equipment meets a preset condition, displaying the address allocated to the target equipment.
3. The CAN bus-based address assignment method according to claim 1, wherein the determining whether the target device satisfies a preset operation condition includes:
judging whether the operation time length of the target equipment meets a preset operation time length or not;
and when the running time length of the target equipment meets the preset running time length, determining that the target equipment meets the preset running condition.
4. The CAN bus-based address assignment method according to claim 1, wherein the determining whether the target device satisfies a preset operation condition includes:
judging whether the running state of the target equipment meets a preset running state or not;
and when the running state of the target equipment meets the preset running state, determining that the target equipment meets the preset running condition.
5. The CAN-bus-based address assignment method according to claim 1, wherein said assigning an address to the target device comprises:
and allocating addresses to the target equipment through the remote control equipment according to a preset allocation mode.
6. The CAN-bus-based address assignment method according to claim 1, wherein the determining whether the address assigned to the target device satisfies a preset condition includes: counting the distribution times of the historical addresses;
judging whether the historical address distribution times are larger than or equal to a distribution threshold value or not;
and when the historical address allocation times is larger than or equal to the allocation threshold, determining that the address allocated to the target device does not meet the preset condition.
7. The CAN-bus-based address assignment method of claim 6, wherein the adjusting the preset address assignment policy when the address assigned by the target device does not satisfy a preset condition comprises:
displaying, by the target device, an address overflow fault code;
and reallocating the address for the target equipment, and executing the step of judging whether the address allocated to the target equipment meets the preset condition.
8. The CAN-bus-based address assignment method according to claim 1, wherein the determining whether the address assigned to the target device satisfies a preset condition includes:
judging whether a device with the same address as the address allocated to the target device is detected;
and when the device with the same address as the address allocated to the target device is detected, determining that the address allocated to the target device does not meet the preset condition.
9. The CAN-bus-based address assignment method of claim 8, wherein the adjusting the preset address assignment policy when the address assigned by the target device does not satisfy a preset condition comprises:
displaying an address duplication fault code by the target device and a device having the same address to which the target device is assigned;
reallocating addresses to the target devices;
judging whether a device with the same address as the address reallocated to the target device is detected or not within a preset time period;
and when the device with the same address as the address reassigned by the target device is not detected, canceling the address repeated fault code display, and executing the step of judging whether the address assigned by the target device meets the preset condition.
10. An air conditioner, comprising a memory, a processor, and a CAN bus-based address assignment program stored in the memory and executable on the processor, wherein the CAN bus-based address assignment program, when executed by the processor, implements the steps of the CAN bus-based address assignment method according to any one of claims 1 to 9.
11. A CAN bus-based address assignment system applied to the air conditioner of claim 10, the system comprising:
the address distribution module is configured to distribute addresses to target equipment on the CAN bus by using a preset address distribution strategy;
the judging module is configured to judge whether the address allocated to the target device meets a preset condition;
and the strategy adjusting module is configured to adjust the preset address allocation strategy when the address allocated to the target device does not meet the preset condition.
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| CN201811369034.2A CN109654667B (en) | 2018-11-16 | 2018-11-16 | Address allocation method and system based on CAN bus and air conditioner |
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| CN201811369034.2A CN109654667B (en) | 2018-11-16 | 2018-11-16 | Address allocation method and system based on CAN bus and air conditioner |
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| CN110311993B (en) * | 2019-07-09 | 2020-09-25 | 珠海格力电器股份有限公司 | Air conditioner address management system based on APP |
| CN111043721B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | CAN bus matching resistor access method and device, air conditioning unit and system |
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| CN107249048A (en) * | 2017-06-26 | 2017-10-13 | 珠海格力电器股份有限公司 | Air-conditioning system and its address distribution method and device |
| KR20170140618A (en) * | 2016-06-13 | 2017-12-21 | 엘지전자 주식회사 | Air conditioner and communication method of thereof |
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| CN102957757A (en) * | 2011-08-23 | 2013-03-06 | 珠海格力电器股份有限公司 | Air conditioner system and method and device for mailing address matching for same |
| KR20170140618A (en) * | 2016-06-13 | 2017-12-21 | 엘지전자 주식회사 | Air conditioner and communication method of thereof |
| CN107249048A (en) * | 2017-06-26 | 2017-10-13 | 珠海格力电器股份有限公司 | Air-conditioning system and its address distribution method and device |
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