CN111023441B - Air conditioner control method and system, storage medium and air conditioner - Google Patents
Air conditioner control method and system, storage medium and air conditioner Download PDFInfo
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- CN111023441B CN111023441B CN201911396558.5A CN201911396558A CN111023441B CN 111023441 B CN111023441 B CN 111023441B CN 201911396558 A CN201911396558 A CN 201911396558A CN 111023441 B CN111023441 B CN 111023441B
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/37—Resuming operation, e.g. after power outages; Emergency starting
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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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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner control method, an air conditioner control system, a storage medium and an air conditioner, wherein the air conditioner control method judges whether an outdoor unit of the air conditioner has an under-voltage fault or not after the air conditioner is started; if the outdoor unit of the air conditioner has an undervoltage fault, the power switch of the indoor unit is repeatedly switched off or switched on until the outdoor unit is restarted within a preset time, so that the outdoor unit of the air conditioner can still normally work after the undervoltage fault, and the cost is not required to be increased.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner control system, a storage medium and an air conditioner.
Background
The control power supply of the outdoor unit mainboard of the variable frequency air conditioner is mainly closed by adopting an indoor unit relay and then supplies power to the outdoor unit, an alternating current power supply obtains high-voltage direct current with relatively stable voltage through a rectifying circuit and a power correction factor circuit on the control board side of the outdoor unit, then low-voltage direct current VCC is converted through a switching power supply circuit, and then stable chip MCU working power supply VDD is converted through a linear power supply module. Only when the voltage of the working power supply VDD is higher than the minimum voltage threshold required by the normal work of the MCU, the MCU can normally work, and once the voltage of the working power supply VDD is lower than the threshold, the MCU can be triggered to have an under-voltage fault, so that the air conditioner can not normally run. In practical application, in some specific extreme environments such as extremely low temperature, the characteristics of partial power supply devices of the outdoor unit are poor, so that the power supply is under-voltage, the MCU is reset, the communication fault is reported because the communication data of the outdoor unit cannot be received by the indoor unit for a long time, and the unit cannot work normally.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide an air conditioner control method, system, storage medium and air conditioner, which can ensure that the outdoor unit of the air conditioner can still work normally after an under-voltage fault, and does not need to increase the cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
an air conditioner control method comprises the following steps:
after the air conditioner is started, judging whether an outdoor unit of the air conditioner has an undervoltage fault;
and if the outdoor unit has an undervoltage fault, the power switch of the indoor unit is turned off or turned on for multiple times until the outdoor unit is restarted within a preset time length.
In the air conditioner control method, before the step of judging whether the outdoor unit of the air conditioner has the undervoltage fault, the method further comprises the following steps:
judging whether the indoor unit receives communication data of the outdoor unit within preset time;
if the indoor unit does not receive the communication data within the preset time, determining a communication fault between the indoor unit and the outdoor unit;
and acquiring the inner ring temperature or the outer ring temperature of the air conditioner, and judging whether the outdoor unit of the air conditioner has an undervoltage fault according to the inner ring temperature or the outer ring temperature.
In the air conditioner control method, the step of judging whether an outdoor unit of the air conditioner has an undervoltage fault or not according to the inner ring temperature or the outer ring temperature includes:
judging whether the temperature of the inner ring of the air conditioner is smaller than a preset inner ring temperature threshold or whether the temperature of the outer ring of the air conditioner is smaller than a preset outer ring temperature threshold;
and if the inner ring temperature is smaller than the preset inner ring temperature threshold value or the outer ring temperature is smaller than the preset outer ring temperature threshold value, determining that the air conditioner outdoor unit has an under-voltage fault.
In the air conditioner control method, the step of repeatedly turning off and turning on the power switch of the indoor unit includes:
the power switch of the indoor unit is disconnected for the first time, and the power switch is closed for the first time after the first time length;
judging whether the communication between the indoor unit and the outdoor unit is in fault or not again;
if the communication between the indoor unit and the outdoor unit fails, the power switch of the indoor unit is disconnected for the second time, and the power switch is closed for the second time after the first time length until the outdoor unit is restarted within the preset time length;
and the first time length of two adjacent times is separated by a second time length, and the first time length is less than the preset time length.
In the air conditioner control method, after the step of judging whether the communication between the indoor unit and the outdoor unit is failed again, the method further comprises the following steps:
if the communication between the indoor unit and the outdoor unit fails, acquiring the current on-time or off-time of the power switch;
judging whether the current closing times or the current opening times are larger than preset times or not;
and if the current closing times or the current opening times are larger than the preset times, reporting the communication fault of the indoor unit and the outdoor unit.
In the air conditioner control method, after the step of reporting the communication fault between the indoor unit and the outdoor unit, the method further comprises the following steps: and controlling the air conditioner to stop running.
In the air conditioner control method, the preset time period is a time period during which the power supply voltage of the outdoor unit maintains a normal voltage after the power supply switch is turned off.
An air conditioning control system comprising a processor, a memory communicatively coupled to the processor, the memory storing a computer program for execution by the processor to implement the air conditioning control method as described above; the processor is used for calling the computer program in the memory to execute the air conditioner control method.
A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps in the air conditioning control method as described above.
An air conditioner comprises the air conditioner control system.
Compared with the prior art, the air conditioner control method, the air conditioner control system, the storage medium and the air conditioner provided by the invention have the advantages that whether the outdoor unit of the air conditioner has an under-voltage fault or not is judged after the air conditioner is started; if the outdoor unit of the air conditioner has an undervoltage fault, the power switch of the indoor unit is turned off or turned on for multiple times until the outdoor unit is restarted within a preset time, so that the outdoor unit of the air conditioner can still work normally after the undervoltage fault, and the cost is not required to be increased.
Drawings
FIG. 1 is a flow chart of an air conditioner control method provided by the present invention;
FIG. 2 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
fig. 3 is a flowchart of step S100 in the air conditioner control method according to the present invention;
fig. 4 is a flowchart of step S200 in the air conditioner control method according to the present invention;
FIG. 5 is a flowchart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
fig. 6 is a block diagram of an air conditioning control system according to the present invention.
Detailed Description
In view of the defects of the prior art, the invention aims to provide an air conditioner control method, an air conditioner control system, a storage medium and an air conditioner, which solve the problem that a unit cannot normally work after the voltage of an outdoor unit of the existing air conditioner is under-voltage.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the air conditioner control method provided by the present invention includes the following steps:
s100, after the air conditioner is started, judging whether an outdoor unit of the air conditioner has an undervoltage fault;
s200, if the outdoor unit of the air conditioner has an undervoltage fault, the power switch of the indoor unit is turned off or turned on for multiple times until the outdoor unit is restarted within a preset time.
In this embodiment, whether the air conditioner is started is controlled by an indoor unit of the air conditioner, wherein a power supply of the outdoor unit is determined by a power switch of the indoor unit, specifically, whether the power supply is turned on or not is controlled by turning on or off the power switch of the indoor unit, so as to provide a power voltage for the outdoor unit, when the power switch of the indoor unit is turned on, it is first determined whether the outdoor unit of the air conditioner has an under-voltage fault, and when the outdoor unit of the air conditioner has the under-voltage fault, the outdoor unit is controlled to be restarted by turning on and off the power switch of the indoor unit for multiple times until the outdoor unit is restarted within a preset time period, wherein the preset time period is a time period during which the power voltage of the outdoor unit maintains a normal voltage after the power switch is turned off; when the power supply switch is turned off to cut off the power supply of the power supply voltage of the outdoor unit, the power supply voltage of the controller in the outdoor unit maintains normal voltage in a certain time period, if the power supply switch is turned on again to supply power to the outdoor unit in the time period, the controller of the outdoor unit can be guaranteed not to be reset due to undervoltage and further to work normally due to the fact that the power supply voltage in the time period is normal, and normal operation of the air conditioner is guaranteed, so that the problem that the air conditioner cannot work normally due to undervoltage in a specific extreme environment such as extremely low temperature is solved.
Further, referring to fig. 2, in an embodiment of the present invention, before the step S100, the method further includes:
s10, judging whether the indoor unit receives communication data of the outdoor unit within a preset time;
s20, if the indoor unit does not receive the communication data within the preset time, determining that the communication between the indoor unit and the outdoor unit is failed;
s30, obtaining the inner ring temperature or the outer ring temperature of the air conditioner, and judging whether the outdoor unit of the air conditioner has an undervoltage fault according to the inner ring temperature or the outer ring temperature.
In specific implementation, when the indoor unit is remotely controlled to start the air conditioner, after the power switch is turned on to supply power to the controller of the outdoor unit, under normal conditions, the indoor unit and the outdoor unit start data communication, and when the indoor unit does not receive communication data output by the outdoor unit within a preset time, a communication fault between the indoor unit and the outdoor unit is indicated, because the outdoor unit cannot normally output the communication data to the indoor unit under the condition of an undervoltage fault, the communication between the indoor unit and the outdoor unit is abnormal, and further after the communication fault between the indoor unit and the outdoor unit is determined, whether the communication fault is caused by the undervoltage fault of the outdoor unit or not is further detected.
Furthermore, in this embodiment, when a communication fault occurs after the initial startup is detected, the relationship between the inner ring temperature and the outer ring temperature and a preset threshold needs to be determined, in general, the temperature sensing of the inner ring temperature is wrapped on an indoor unit main board, and the temperature sensing of the outer ring temperature is wrapped on an outdoor unit main board, because of communication abnormality at this time, the indoor unit cannot acquire the outer ring temperature, and only the relationship between the inner ring temperature and the set threshold, that is, the outer ring temperature indirectly reflected by the inner ring temperature, is used for determining whether the communication fault between the indoor unit and the outdoor unit is caused by the low temperature, so that the communication fault between the indoor unit and the outdoor unit is caused; for some models, temperature sensing bags of the inner ring temperature and the outer ring temperature of the model are on the mainboard of the indoor unit, and the judgment can be carried out directly through the outer ring temperature at the moment; if the inner ring temperature is judged to be greater than the preset inner ring temperature threshold value or the outer ring temperature is judged to be greater than the preset outer ring temperature threshold value, the communication fault is indicated; if the inner ring temperature is smaller than the preset inner ring temperature threshold value or the outer ring temperature is smaller than the preset outer ring temperature threshold value, the communication fault between the indoor unit and the outdoor unit is considered to be possibly caused by the fact that the low temperature causes the controller of the outdoor unit to be under-voltage fault, therefore, when the communication fault occurs after the air conditioner is started for the first time, the inner ring temperature or the outer ring temperature of the air conditioner needs to be further obtained, and whether the outdoor unit of the air conditioner is under-voltage fault or not is judged according to the inner ring temperature or the outer ring temperature.
Further, referring to fig. 3, the step S100 includes:
s110, judging whether the temperature of the inner ring of the air conditioner is smaller than a preset inner ring temperature threshold or whether the temperature of the outer ring of the air conditioner is smaller than a preset outer ring temperature threshold;
and S120, if the inner ring temperature is smaller than the preset inner ring temperature threshold value or the outer ring temperature is smaller than the preset outer ring temperature threshold value, determining that the air conditioner outdoor unit has an undervoltage fault.
In this embodiment, when the temperature of the inner ring of the air conditioner is lower than the preset inner ring threshold, it indicates that there is a possibility that the controller of the outdoor unit of the air conditioner has an under-voltage fault due to low temperature; similarly, when the outer ring temperature of the air conditioner is smaller than the preset outer ring temperature threshold, it also indicates that the controller of the air conditioner outdoor unit is in an undervoltage fault due to low temperature at the moment; therefore, whether the controller of the outdoor unit has the undervoltage fault due to low temperature is judged according to the comparison result by acquiring the inner ring temperature or the outer ring temperature of the air conditioner, comparing the inner ring temperature and the outer ring temperature with the preset inner ring temperature threshold and the preset outer ring temperature threshold.
Further, referring to fig. 4, the step S200 includes:
s210, a power switch of the indoor unit is disconnected for the first time, and the power switch is closed for the first time after a first time length;
s220, judging whether the communication between the indoor unit and the outdoor unit is in fault again;
s230, if the communication between the indoor unit and the outdoor unit fails, switching off a power switch of the indoor unit for the second time, and switching on the power switch for the second time after the first time period until the outdoor unit is restarted within a preset time period; and the first time length of two adjacent times is separated by a second time length, and the first time length is less than the preset time length.
In this embodiment, if the outdoor unit of the air conditioner has an under-voltage fault, the power switch of the indoor unit is turned off, and the power switch is turned on after a first duration; then, judging whether a communication fault exists between the indoor unit and the outdoor unit; if the communication between the indoor unit and the outdoor unit fails, disconnecting the power switch of the indoor unit again, and closing the power switch after the first time length, so as to repeatedly disconnect and close the power switch, so that the outdoor unit is awakened to normally work in a time period when the power supply voltage is normal at a certain moment after the power failure of the outdoor unit; the first duration in this embodiment sequentially increases with the number of times that the power switch is turned on, specifically, the two adjacent first durations are separated by a second duration t, and the first duration is less than the preset duration.
Specifically, when an outdoor unit of the air conditioner has an undervoltage fault, the indoor unit does not report a communication fault, the power switch is disconnected to cut off a power supply of the outdoor unit, the power switch is closed again after the time length for disconnecting the power switch is N time, so that the outdoor unit is powered on, then whether the communication fault exists between the indoor unit and the outdoor unit is judged again, if the communication fault does not exist, normal control logic is executed, the air conditioning unit continues to operate, if the communication fault exists, the power switch is disconnected again to cut off a power supply of the outdoor unit, the power switch is closed again after the time length for disconnecting the power switch is N + t time, the outdoor unit is powered on, and whether the communication fault exists between the indoor unit and the outdoor unit is judged again; if no communication fault exists, executing normal control logic, continuing to operate the air conditioning unit, if the communication fault exists, disconnecting the power switch again to cut off the power supply of the external unit, reclosing the power switch after the time length of disconnecting the power switch is N +2t, electrifying the external unit, and detecting whether the communication fault exists again; the actions are repeatedly executed in such a way, only the time period that the power supply voltage of the outdoor unit is normal at a certain moment after the outdoor unit is powered off is captured, so that the controller of the outdoor unit is awakened to work normally, and the air conditioner can work under the condition of low temperature and under-voltage; in this embodiment, the power switch is a relay.
Further, referring to fig. 5, in another embodiment, after the step S220, the method further includes:
s240, if the communication between the indoor unit and the outdoor unit fails, acquiring the current on-off times or off-off times of the power switch;
s250, judging whether the current closing times or the current opening times are larger than preset times;
and S260, if the current closing times or the current opening times are larger than the preset times, reporting the communication fault of the indoor unit and the outdoor unit.
Specifically, the current closing times of the current power switch are also acquired in real time in the process of opening and closing the power switch for multiple times; judging whether the current closing times are greater than preset times or not; if the current closing times are larger than the preset times, controlling the air conditioner to stop running; when the number of times of closing the power switch is larger than the preset number of times, and when the outdoor unit is determined to be incapable of being awakened, judging a communication fault between the indoor unit and the outdoor unit, and further controlling the unit to stop running, meanwhile, if the current number of times of closing is judged to be larger than the preset number of times, indicating the communication fault between the indoor unit and the outdoor unit, and then correspondingly controlling the indoor unit to display a communication fault code, so that the reason of the communication fault of the air conditioner is judged according to the fault code, and maintenance is carried out.
Further, the step S260 is followed by: and controlling the air conditioner to stop running.
And after the on-off switch is turned off for many times, under the condition that the communication between the indoor unit and the outdoor unit is still not recovered, reporting the communication fault between the indoor unit and the outdoor unit, and further controlling the air conditioner to stop running so as to be convenient for follow-up maintenance of the fault of the air conditioner.
Based on the air conditioner control method, the present invention further provides an air conditioner control system, as shown in fig. 6, the air conditioner control system includes a processor 10, a memory 20 connected to the processor 10 in a communication manner, and a communication interface 30 for signal transmission, where the processor 10, the memory 20, and the communication interface 30 are all connected by a communication bus 40. Wherein the memory 20 stores a computer program that is executed by the processor 10 to implement the air conditioning control method as described above; the processor 10 is configured to call the computer program in the memory 20 to execute the air conditioner control method as described above. Since the air conditioner control method has been described in detail above, it is not described in detail here, and it is referred to the corresponding embodiments of the above method.
Based on the air conditioner control method, the invention also provides a computer readable storage medium, which stores one or more programs that can be executed by one or more processors to implement the steps in the air conditioner control method. Since the air conditioner control method has been described in detail above, it is not described in detail here, and it is referred to the corresponding embodiments of the above method.
The invention also provides an air conditioner which comprises the air conditioner control system, and the air conditioner control system is not described in detail since the air conditioner control system is described in detail above.
In summary, according to the air conditioner control method, the air conditioner control system, the storage medium and the air conditioner disclosed by the invention, after the air conditioner is started, whether an outdoor unit of the air conditioner has an under-voltage fault or not is judged; if the outdoor unit of the air conditioner has an undervoltage fault, the power switch of the indoor unit is repeatedly turned off or turned on until the power switch is turned on again within the preset time length to restart the outdoor unit, so that the outdoor unit of the air conditioner can still normally work after the undervoltage fault, and the cost is not required to be increased.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. An air conditioner control method is characterized by comprising the following steps:
after the air conditioner is started, judging whether an outdoor unit of the air conditioner has an undervoltage fault;
if the outdoor unit has an undervoltage fault, the power switch of the indoor unit is turned off or turned on for multiple times until the outdoor unit is restarted within a preset time length;
the step of repeatedly opening and closing the power switch of the indoor unit includes:
the power switch of the indoor unit is disconnected for the first time, and the power switch is closed for the first time after the first time length;
judging whether the communication between the indoor unit and the outdoor unit is in fault or not again;
if the communication between the indoor unit and the outdoor unit fails, the power switch of the indoor unit is disconnected for the second time, and the power switch is closed for the second time after the first time length until the outdoor unit is restarted within the preset time length;
and the first time length of two adjacent times is separated by a second time length, and the first time length is less than the preset time length.
2. The method of claim 1, wherein the step of determining whether the outdoor unit of the air conditioner has the under-voltage fault is preceded by the step of:
judging whether the indoor unit receives communication data of the outdoor unit within preset time;
if the indoor unit does not receive the communication data within the preset time, determining a communication fault between the indoor unit and the outdoor unit;
and acquiring the inner ring temperature or the outer ring temperature of the air conditioner, and judging whether the outdoor unit of the air conditioner has an undervoltage fault according to the inner ring temperature or the outer ring temperature.
3. The method of claim 2, wherein the step of determining whether an under-voltage fault occurs in an outdoor unit of the air conditioner according to the inner loop temperature or the outer loop temperature comprises:
judging whether the temperature of the inner ring of the air conditioner is smaller than a preset inner ring temperature threshold or whether the temperature of the outer ring of the air conditioner is smaller than a preset outer ring temperature threshold;
and if the inner ring temperature is smaller than the preset inner ring temperature threshold value or the outer ring temperature is smaller than the preset outer ring temperature threshold value, determining that the air conditioner outdoor unit has an under-voltage fault.
4. The air conditioner control method according to claim 1, further comprising, after the re-determining whether there is a communication failure between the indoor unit and the outdoor unit, the steps of:
if the communication between the indoor unit and the outdoor unit fails, acquiring the current on-time or off-time of the power switch;
judging whether the current closing times or the current opening times are larger than preset times or not;
and if the current closing times or the current opening times are larger than the preset times, reporting the communication fault of the indoor unit and the outdoor unit.
5. The air conditioning control method according to claim 4, wherein the step of reporting the communication failure between the indoor unit and the outdoor unit further comprises the following steps: and controlling the air conditioner to stop running.
6. The air conditioner control method of claim 1, wherein the preset time period is a time period in which the power voltage of the outdoor unit is maintained at a normal voltage after the power switch is turned off.
7. An air conditioning control system, comprising a processor, a memory communicatively connected to the processor, the memory storing a computer program executed by the processor to implement the air conditioning control method of any one of claims 1 to 6; the processor is used for calling the computer program in the memory to execute the air conditioner control method according to any one of claims 1-6.
8. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps in the air conditioning control method according to any one of claims 1 to 6.
9. An air conditioner characterized by comprising the air conditioning control system according to claim 7.
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