CN113932381A - Air conditioner and remote upgrading method thereof - Google Patents

Air conditioner and remote upgrading method thereof Download PDF

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Publication number
CN113932381A
CN113932381A CN202010670554.8A CN202010670554A CN113932381A CN 113932381 A CN113932381 A CN 113932381A CN 202010670554 A CN202010670554 A CN 202010670554A CN 113932381 A CN113932381 A CN 113932381A
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China
Prior art keywords
outdoor
mcu
eeprom
upgraded
indoor
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Granted
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CN202010670554.8A
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Chinese (zh)
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CN113932381B (en
Inventor
温燕斌
张永良
王涛
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202010670554.8A priority Critical patent/CN113932381B/en
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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
    • 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
    • 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
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an air conditioner and a remote upgrading method thereof, which are applied to the air conditioner comprising an indoor MCU and a plurality of outdoor MCUs, wherein the indoor MCU is used for writing the EEPROM information of a charged erasable programmable read-only memory to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the MCU, and sending EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information sent by the outdoor MCU, and the outdoor MCU is used for sending the outdoor unit model information to the indoor MCU and upgrading the outdoor unit according to the EEPROM data.

Description

Air conditioner and remote upgrading method thereof
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner and a remote upgrading method of the air conditioner.
Background
At present, most variable frequency air conditioners are provided with an EEPROM (Electrically Erasable Programmable read only memory) chip, and the EEPROM chip stores operation parameter data of an air conditioner controller. The program of the air conditioner controller can be kept unchanged, and different system environments can be matched only by modifying the parameters of the EEPROM. The system engineer searches for the optimal EEPROM parameters through various experiments, and in the process, the EEPROM parameter data is frequently updated.
However, the existing methods for updating the parameters of the EEPROMs of the indoor unit and the outdoor unit of the variable frequency air conditioner all require an engineer to disassemble the casing and use a special EEPROM burner to update the parameters. In addition, when one indoor unit corresponds to a plurality of outdoor units, the outdoor unit to be upgraded cannot be determined in time, and the outdoor unit to be upgraded cannot be upgraded.
Therefore, how to quickly determine the outdoor unit to be upgraded and quickly and efficiently upgrade the outdoor EEPROM of the outdoor unit to be upgraded on the premise of not dismounting the air conditioner is a technical problem to be solved at present.
Disclosure of Invention
The invention provides an air conditioner, which is used for solving the technical problems that the outdoor EEPROM of the air conditioner is too complicated and inconvenient to upgrade and an outdoor unit to be upgraded cannot be determined in time when one indoor unit corresponds to a plurality of outdoor units in the prior art, and comprises the following steps:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
one of the outdoor heat exchanger and the indoor heat exchanger works for the condenser, and the other works for the evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
the indoor coil temperature sensor is used for detecting the temperature of the indoor coil;
the system comprises an indoor Micro Control Unit (MCU), a FLASH memory, an outdoor unit and an EEPROM (electrically erasable programmable read-only memory) module, wherein the MCU is used for writing the EEPROM information of the electrically-charged erasable programmable read-only memory to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the MCU, and transmitting EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information transmitted by the MCU;
the outdoor micro control unit MCU is used for sending the model information of the outdoor unit to the indoor MCU and upgrading the outdoor micro control unit MCU according to the EEPROM data;
the EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address;
and the EEPROM data is generated according to the outdoor EEPROM information to be upgraded.
In some embodiments, sending EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information sent by the outdoor micro control unit MCU specifically includes:
the indoor MCU acquires outdoor unit model information sent by the outdoor MCU, and judges whether the outdoor unit model information sent by the outdoor MCU is outdoor unit model information of the outdoor MCU to be upgraded;
if the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded, sending the EEPROM data to the outdoor MCU corresponding to the outdoor unit model information;
and if the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded, the EEPROM data is not sent.
In some embodiments, the determining whether the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded includes:
judging whether the model information of the outdoor unit sent by the outdoor unit is consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded in the FLASH region of the indoor MCU;
if the outdoor unit model information is consistent with the outdoor unit model information of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded;
and if the outdoor unit model information is not consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded.
In some embodiments, the FLASH interval includes a first interval, a second interval, and a third interval, where the first interval and the second interval have the same size, and the writing of the EEPROM information to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into the FLASH interval itself includes:
the indoor MCU sets the first interval, the second interval and the third interval in the FLASH interval;
the indoor MCU writes the EEPROM parameter addresses into the first interval in sequence;
the indoor MCU writes the data corresponding to the EEPROM parameter address into the second interval according to the writing sequence of the EEPROM parameter address;
and the indoor MCU writes the outdoor unit model information of the outdoor MCU to be upgraded into the third interval.
In some embodiments, before sending the EEPROM data to the outdoor MCU to be upgraded, the method further includes:
and the indoor MCU sets an EEPROM updating mark in the EEPROM of the indoor MCU, sends a data sending request to the outdoor MCU to be upgraded and receives a response of the outdoor MCU to be upgraded.
In some embodiments, the EEPROM data includes a check code, and the updating of the EEPROM data is performed according to the EEPROM data, specifically:
after receiving the EEPROM, the outdoor MCU to be upgraded generates a successful receiving mark and sends the successful receiving mark to the indoor MCU, and meanwhile, the outdoor EEPROM is upgraded according to the EEPROM data;
and after receiving the successful receiving mark, the indoor MCU clears the EEPROM updating mark.
In some embodiments, after receiving the EEPROM, the outdoor MCU to be upgraded generates a successful reception flag and sends the successful reception flag to the indoor MCU, and upgrades the outdoor EEPROM according to the EEPROM data, specifically:
the outdoor MCU to be upgraded judges whether the EEPROM data is correct or not according to the check code in the EEPROM data;
and if yes, the outdoor MCU to be upgraded updates the outdoor EEPROM based on the EEPROM parameter address in the EEPROM data and the data corresponding to the EEPROM parameter address, generates the receiving success mark and sends the receiving success mark to the indoor MCU.
In some embodiments, further comprising:
and if the indoor MCU does not receive the successful receiving mark within the preset time, starting an exception handling operation.
In some embodiments, if the indoor MCU does not receive the successful reception flag within a preset time, an exception handling operation is started, specifically:
when the power supply is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, after the indoor MCU is electrified again, the indoor MCU retransmits the EEPROM data to the outdoor MCU to be upgraded;
and when the communication is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, the indoor MCU performs power-off processing on the outdoor MCU to be upgraded and retransmits the EEPROM data to the outdoor MCU to be upgraded.
Correspondingly, the invention also provides a remote upgrading method of the air conditioner, which comprises the following steps:
the indoor MCU writes outdoor EEPROM information to be upgraded and outdoor unit model information of the outdoor MCU to be upgraded into a FLASH interval of the indoor MCU, wherein the EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address;
the indoor MCU receives outdoor unit model information sent by the outdoor MCU, and takes an outdoor unit corresponding to the outdoor unit model information consistent with the outdoor unit model information of the outdoor MCU to be upgraded in the FLASH interval as the outdoor MCU to be upgraded;
the indoor MCU sets an outdoor EEPROM updating mark and sends EEPROM data to the outdoor MCU to be upgraded, and the EEPROM data is generated based on the outdoor EEPROM information to be upgraded;
if the outdoor MCU to be upgraded is successfully transmitted, clearing the outdoor EEPROM updating mark based on the successful receiving mark returned by the outdoor MCU to be upgraded, and updating the outdoor EEPROM according to the EEPROM data;
and if the sending fails, executing exception handling operation.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses an air conditioner and a remote upgrading method thereof, which are applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor MCU and a plurality of outdoor MCUs. By the air conditioner and the remote upgrading method for the air conditioner, the outdoor unit to be upgraded is quickly determined, remote upgrading of the outdoor EEPROM of the outdoor unit to be upgraded is realized, and convenience in upgrading the outdoor EEPROM of the air conditioner is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a remote upgrading method for an air conditioner according to an embodiment of the present invention;
Detailed Description
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 only a part of the embodiments of the present application, and not all of the 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.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
To further describe the solution of the present application, fig. 1 shows a schematic structural diagram of an air conditioner of the present application.
The application protects an air conditioner, as shown in fig. 1, specifically is:
the refrigerant circulation circuit 101 circulates a refrigerant in a circuit including a compressor, a condenser, an expansion valve, an evaporator, a four-way valve, and a pressure reducer.
In a preferred embodiment of the present application, an air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor 102 is configured to compress a low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas, and discharge the high-temperature and high-pressure refrigerant gas to the condenser.
In a preferred embodiment of the present application, the compressor compresses a refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
An outdoor heat exchanger and an indoor heat exchanger 103, one of which operates as a condenser and the other of which operates as an evaporator.
In a preferred embodiment of the present application, the outdoor unit of the air conditioner includes a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve may be provided in either the indoor unit or the outdoor unit.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
A four-way valve 104 for controlling the flow direction of the refrigerant in the refrigerant circuit to switch the outdoor heat exchanger and the indoor heat exchanger as a condenser and an evaporator;
an indoor environment temperature sensor 105 for detecting an indoor environment temperature;
an indoor coil temperature sensor 106 for sensing an indoor coil temperature.
The indoor micro control unit MCU107 is used for writing the EEPROM information of the electrified erasable programmable read-only memory to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the indoor micro control unit MCU, and sending EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information sent by the outdoor micro control unit MCU;
and the outdoor micro control unit MCU108 is used for sending the model information of the outdoor unit to the indoor MCU and upgrading the outdoor unit according to the EEPROM data.
The EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address;
the EEPROM data is generated according to the outdoor EEPROM information to be upgraded;
in the preferred embodiment of the present application, the air conditioner comprises an indoor unit and an outdoor unit, and one indoor unit corresponds to a plurality of outdoor units, both of which are provided with MCUs, when the outdoor EEPROM needs to be upgraded, firstly, EEPROM information to be upgraded and outdoor unit model information to be upgraded need to be written into a FLASH zone of the indoor MCU, because there are a plurality of outdoor units, when the outdoor unit model information from the outdoor MCU is received, the received outdoor unit model information is compared with the outdoor unit model information of the outdoor MCU to be upgraded, which is written into the FLASH zone, when the received outdoor unit model information is consistent with the outdoor unit model information of the outdoor MCU to be upgraded, the outdoor unit corresponding to the received outdoor unit model information is the outdoor unit to be upgraded, and after the EEPROM information in the FLASH zone is processed, and generating the EEPROM data, and sending the EEPROM data to an outdoor MCU of the outdoor unit to be upgraded, wherein the outdoor MCU upgrades the outdoor EEPROM based on the received EEPROM data.
That is to say, in the scheme of the present application, when a certain outdoor unit needs to be upgraded, the model information of the outdoor unit is first written into the FLASH region of the indoor MCU and compared with the model information sent by the outdoor unit, so as to accurately identify the outdoor unit to be upgraded, after the outdoor unit to be upgraded is upgraded, if other subsequent outdoor units need to be upgraded, the model information of other outdoor units that need to be upgraded is continuously written into the FLASH region of the indoor MCU, and the above steps are repeated, thereby upgrading multiple outdoor units, accurately identifying the outdoor units to be upgraded, and improving the upgrading efficiency of the outdoor MCU.
It should be noted that, in order to facilitate transmission of the EEPROM information, in a preferred embodiment of the present application, the EEPROM data specifically includes a header code, a byte length, the EEPROM parameter address, data corresponding to the EEPROM parameter address, and a check code, that is, in order that no error occurs in the process of transmitting the EEPROM information from the MCU to the outdoor unit, the EEPROM information needs to be packaged to generate corresponding EEPROM data, and the specific EEPROM data is formed in a form of header code + byte length + address 1+ data 1+ address 2+ data 2+ … … + address N + data N + checksum.
In order to accurately send the EEPROM data to the outdoor MCU to be upgraded, in some embodiments, the EEPROM data is sent to the outdoor MCU to be upgraded according to the outdoor unit model information sent by the outdoor micro control unit MCU, which specifically includes:
the indoor MCU acquires outdoor unit model information sent by the outdoor MCU, and judges whether the outdoor unit model information sent by the outdoor MCU is outdoor unit model information of the outdoor MCU to be upgraded;
if the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded, sending the EEPROM data to the outdoor MCU corresponding to the outdoor unit model information;
and if the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded, the EEPROM data is not sent.
In a preferred embodiment of the present application, the indoor MCU receives outdoor unit model information sent by a plurality of outdoor MCUs, the indoor unit identifies the received outdoor unit model information one by one, and determines whether the outdoor unit model information of the outdoor MCU is to be upgraded in the received outdoor unit model information, if yes, the EEPROM data is sent to the outdoor MCU corresponding to the outdoor unit model information, and if not, the EEPROM data is not sent to any outdoor MCU.
By judging whether the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded or not, the outdoor MCU to be upgraded can be quickly determined to be any one of the plurality of outdoor MCUs, so that the EEPROM data is sent to the outdoor MCU of the outdoor unit to be upgraded.
In order to accurately determine whether the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded, in a preferred embodiment of the present application, determining whether the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded specifically includes:
judging whether the model information of the outdoor unit sent by the outdoor unit is consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded in the FLASH region of the indoor MCU;
if the outdoor unit model information is consistent with the outdoor unit model information of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded;
and if the outdoor unit model information is not consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded.
In a preferred embodiment of the application, after receiving outdoor unit model information sent by an outdoor MCU, the outdoor unit model information is compared with outdoor unit model information of an outdoor MCU to be upgraded in a FLASH region of an indoor MCU one by one, and if the outdoor unit model information sent by a certain outdoor MCU is the same as the outdoor unit model information of the outdoor MCU to be upgraded in the FLASH region, an outdoor unit corresponding to the outdoor MCU is an outdoor unit to be upgraded, and EEPROM data is sent to the outdoor MCU.
In order to accurately write the EEPROM information to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into the FLASH of the indoor MCU, in some embodiments, the FLASH section includes a first section, a second section, and a third section, the first section and the second section have the same size, and the EEPROM information to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded are written into the FLASH section of the FLASH section, which specifically includes:
the indoor MCU sets the first interval, the second interval and the third interval in the FLASH interval;
the indoor MCU writes the EEPROM parameter addresses into the first interval in sequence;
the indoor MCU writes the data corresponding to the EEPROM parameter address into the second interval according to the writing sequence of the EEPROM parameter address;
and the indoor MCU writes the outdoor unit model information of the outdoor MCU to be upgraded into the third interval.
In a preferred embodiment of the present application, since the EEPROM parameter includes the EEPROM parameter address and the data corresponding to the EEPROM parameter address, in order to avoid mixing the two data when writing them, in the present application, two sections, namely a first section and a second section, are separately set in the FLASH section of the indoor MCU, the parameter addresses are stored in the first section in sequence, and the data corresponding to the EEPROM parameter addresses are written in the second section in the same sequence, meanwhile, since the parameter addresses are in a one-to-one correspondence relationship with the data corresponding to the parameter addresses, the sizes of the first section and the second section are equal, and meanwhile, in order to identify whether the outdoor unit model information sent by the subsequent outdoor MCU is the model information of the outdoor unit to be upgraded, a third section is also required to be set for storing the model information of the outdoor unit to be upgraded, the method is used as a judgment standard to quickly and accurately identify the outdoor unit to be upgraded.
It should be noted that the scheme of the above preferred embodiment is only a specific implementation scheme proposed in the present application, and other ways of writing the outdoor EEPROM parameter and the outdoor unit model information of the outdoor MCU to be upgraded into the FLASH region of the indoor MCU all belong to the protection scope of the present application.
In order to ensure the normal transmission of the EEPROM data, in some embodiments, before transmitting the EEPROM data to the outdoor MCU to be upgraded, the method further includes:
and the indoor MCU sets an EEPROM updating mark in the EEPROM of the indoor MCU, sends a data sending request to the outdoor MCU to be upgraded and receives a response of the outdoor MCU to be upgraded.
In the preferred embodiment of the application, an EEPROM updating mark is set for the EEPROM of the indoor MCU to mark that the outdoor EEPROM is in a state to be updated, at the moment, the indoor MCU sends a data sending request to the outdoor MCU to be upgraded, and after receiving a response of agreeing to data sending from the outdoor MCU to be upgraded, the indoor MCU sends the EEPROM data to the outdoor MCU to be upgraded.
In order to realize the upgrading of the outdoor EEPROM, in some embodiments, the EEPROM data includes a check code, and the upgrading itself is performed according to the EEPROM data, specifically:
after receiving the EEPROM, the outdoor MCU to be upgraded generates a successful receiving mark and sends the successful receiving mark to the indoor MCU, and meanwhile, the outdoor EEPROM is upgraded according to the EEPROM data;
and after receiving the successful receiving mark, the indoor MCU clears the EEPROM updating mark.
In the preferred embodiment of the application, after the EEPROM data is successfully transmitted to the outdoor MCU to be upgraded, the outdoor MCU to be upgraded generates a corresponding successful receiving flag and transmits the successful receiving flag back to the indoor MCU, and after the indoor MCU receives the corresponding successful receiving flag, the EEPROM updating flag is deleted to indicate that the EEPROM data transmission is completed, and the outdoor MCU to be upgraded upgrades the outdoor EEPROM according to the received EEPROM data.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other ways of setting a flag to indicate the EEPROM transfer process all belong to the protection scope of the present application.
In order to ensure that the outdoor MCU to be upgraded receives the EEPROM data, in some embodiments, after receiving the EEPROM data, the outdoor MCU to be upgraded generates a successful reception flag and sends the successful reception flag to the indoor MCU, and upgrades the outdoor EEPROM according to the EEPROM data, specifically:
the outdoor MCU to be upgraded judges whether the EEPROM data is correct or not according to the check code in the EEPROM data;
and if yes, the outdoor MCU to be upgraded updates the outdoor EEPROM based on the EEPROM parameter address in the EEPROM data and the data corresponding to the EEPROM parameter address, generates the receiving success mark and sends the receiving success mark to the indoor MCU.
In the preferred embodiment of the application, errors in the transmission process are avoided, when the EEPROM data are received, the check codes in the EEPROM data are identified, if the check codes are correct, the EEPROM data are not in error, the EEPROM data are split into the EEPROM parameter addresses and the data corresponding to the EEPROM parameter addresses, and finally the EEPROM parameter addresses and the data corresponding to the EEPROM parameter addresses are written into the outdoor EEPROM one by one according to the sequence to finish the upgrading of the EEPROM.
It should be noted that the scheme of the above preferred embodiment is only a specific implementation scheme proposed in the present application, and other ways of upgrading the outdoor EEPROM based on EEPROM data all belong to the protection scope of the present application.
In order to avoid the abnormal situation, in some embodiments, the method further comprises:
and if the indoor MCU does not receive the successful receiving mark within the preset time, starting an exception handling operation.
In the preferred embodiment of the application, an exception handling mechanism is further provided, and after the indoor MCU sends the EEPROM data to the outdoor MCU to be upgraded and waits for a preset time, a successful receiving flag of the outdoor MCU to be upgraded is not received, which indicates that the EEPROM data transmission process is abnormal, and at this time, an exception handling operation is performed.
In order to execute the exception handling operation, in some embodiments, if the indoor MCU does not receive the reception success flag within a preset time, an exception handling operation is started, specifically:
when the power supply is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, after the indoor MCU is electrified again, the indoor MCU retransmits the EEPROM data to the outdoor MCU to be upgraded;
and when the communication is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, the indoor MCU performs power-off processing on the outdoor MCU to be upgraded and retransmits the EEPROM data to the outdoor MCU to be upgraded.
In the preferred embodiment of the application, if the power is off in the upgrading process, and after the power is on again, because the indoor MCU reads that the mark needing to be updated of the outdoor EEPROM exists in the indoor EEPROM exists, the outdoor unit to be upgraded is powered on, a request for upgrading the outdoor EEPROM is sent to the outdoor unit to be upgraded, and the EEPROM data is sent to the outdoor EEPROM again; if the communication is disconnected in the upgrading process, the outdoor unit to be upgraded is powered off, the outdoor unit to be upgraded is powered on again after 1min, the outdoor unit to be upgraded is restarted to send a request for upgrading the outdoor EEPROM, then the outdoor EEPROM is restarted, and if the information sent from the outdoor unit cannot be received for a certain time t again, the communication fault is reported through the display screen, so that the user can demand after-sale service.
It should be noted that the scheme of the above preferred embodiment is only a specific implementation scheme proposed in the present application, and all the ways of protecting the outdoor EEPROM upgrade by other exception handling mechanisms belong to the protection scope of the present application.
The invention discloses an air conditioner which comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor MCU and a plurality of outdoor MCUs, wherein the indoor MCU is used for writing the EEPROM information of a charged erasable programmable read-only memory to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the MCU, sending EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information sent by the outdoor MCU, and the outdoor MCU is used for sending the outdoor unit model information to the indoor MCU and upgrading the MCU according to the EEPROM data. By the air conditioner and the remote upgrading method for the air conditioner, the outdoor unit to be upgraded is quickly determined, remote upgrading of the outdoor EEPROM of the outdoor unit to be upgraded is realized, and convenience in upgrading the outdoor EEPROM of the air conditioner is improved.
Based on the air conditioner, the application also provides an air conditioner remote upgrading method, as shown in fig. 2, the method is applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil pipe temperature sensor, an indoor MCU and a plurality of outdoor MCUs, and the method comprises the following steps:
step S201, the indoor MCU writes outdoor EEPROM information to be upgraded and outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the indoor MCU, wherein the EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address.
In a preferred embodiment of the present application, outdoor EEPROM information to be upgraded and outdoor unit model information of the outdoor MCU to be upgraded are stored in advance in the FLASH of the indoor MCU, the EEPROM information specifically includes the EEPROM parameter address and data corresponding to the EEPROM parameter address, and the amount of the information can be adjusted according to actual needs.
In a preferred embodiment of the present application, when the outdoor EEPROM needs to be upgraded, an address in an EEPROM parameter that needs to be upgraded is written into a defined first interval of the indoor MCU, data corresponding to each address is written into a second interval, and a corresponding number of parameters are written according to actual needs, for example, 50 data corresponding to 50 addresses are rewritten altogether, where the 50 addresses are: 0x00, 0x07 … … 0x58, the corresponding parameters are: 0x22, 0x35 … … 0x90, that is, 50 addresses of 0x00, 0x07 … … 0x58 are sequentially placed in the first interval, and 0x22, 0x35 … … 0x90 are sequentially placed in the second interval, that is, the method can be upgraded according to actual requirements, and does not upgrade the whole outdoor EEPROM regardless of the number of parameters to be changed.
Meanwhile, in order to identify whether the outdoor unit model information sent by the subsequent outdoor MCU is the model information of the outdoor unit to be upgraded, a third interval is also required to be set for storing the model information of the outdoor unit to be upgraded as a judgment standard, so as to quickly and accurately identify the outdoor unit to be upgraded.
And S202, the indoor MCU receives the outdoor unit model information sent by the outdoor MCU, and takes the outdoor unit corresponding to the outdoor unit model information consistent with the outdoor unit model information of the outdoor MCU to be upgraded in the FLASH interval as the outdoor MCU to be upgraded.
In a preferred embodiment of the present application, when the outdoor EEPROM needs to be upgraded, firstly, the EEPROM information to be upgraded and the outdoor unit model information to be upgraded need to be written into a FLASH section of the indoor MCU, since there are a plurality of outdoor units, when the outdoor unit model information from the outdoor MCU is received, the received outdoor unit model information is compared with the outdoor unit model information of the outdoor MCU to be upgraded, which is written into the FLASH section, and when the received outdoor unit model information is identical to the outdoor unit model information of the outdoor MCU to be upgraded, the outdoor unit corresponding to the received outdoor unit model information is the outdoor unit to be upgraded.
For example, 4 outdoor units, namely, the outdoor unit 1, the outdoor unit 2, the outdoor unit 3 and the outdoor unit 4 are configured in one indoor unit, and we need to upgrade the outdoor MCU of the outdoor unit 3, the model information of the outdoor unit 3 is stored in the FLASH region of the indoor unit in advance, after the model information of the outdoor unit sent by the 4 outdoor MCUs is received, the model information is compared with the model information in the FLASH region, only the model information sent by the outdoor unit 3 is consistent with the model information in the FLASH region, and at this time, the indoor MCU sends EEPROM data to the outdoor MCU of the outdoor unit 3.
And S203, setting an outdoor EEPROM updating mark by the indoor MCU, and sending EEPROM data to the outdoor MCU to be upgraded, wherein the EEPROM data is generated based on the outdoor EEPROM information to be upgraded.
In the preferred embodiment of the application, an outdoor EEPROM updating mark is set in an indoor MCU to mark that the outdoor EEPROM is in a state to be updated, and in the subsequent step, the progress of the upgrading process is indicated by replacing the mark, and simultaneously the EEPROM data is sent to the outdoor MCU to be upgraded.
When the outdoor EEPROM needs to be updated, setting a mark that the outdoor EEPROM needs to be updated in the indoor EEPROM, generating EEPROM data according to the outdoor EEPROM parameters to be updated written in the FLASH region of the indoor MCU, for example, if 50 outdoor EEPROM parameters need to be modified, the EEPROM is specifically a checksum of a head code, a byte length, an address 1, a data 1, an address 2, a data 2, an … …, an address 50, and data 50, and meanwhile, the indoor unit of the air conditioner powers on the outdoor unit to be updated, sends a request for updating the outdoor EEPROM to the outdoor unit to be updated, and sends the EEPROM data to the outdoor unit to be updated after the outdoor unit to be updated responds and allows.
And step S204, if the outdoor MCU to be upgraded is successfully transmitted, clearing the outdoor EEPROM updating mark based on the successful receiving mark returned by the outdoor MCU to be upgraded, and updating the outdoor EEPROM according to the EEPROM data.
In a preferred embodiment of the present application, after the EEPROM data is successfully transmitted to the outdoor MCU, the outdoor MCU generates a corresponding successful reception flag and transmits the successful reception flag back to the indoor MCU, and after the indoor MCU receives the corresponding successful reception flag, the flag that needs to be updated is deleted to indicate that the EEPROM data transmission is completed, and when the outdoor EEPROM receives the EEPROM data and determines that the EEPROM data is not in error, the outdoor unit to be upgraded transmits the successful reception flag of the EEPROM data to the indoor unit, and at the same time, the outdoor unit to be upgraded updates the outdoor EEPROM, and sequentially updates the outdoor EEPROM according to the received 50 addresses and 50 data.
In step S205, if the transmission fails, an exception handling operation is performed.
In the preferred embodiment of the application, if the power is off in the upgrading process, and after the power is on again, because the indoor MCU reads that the mark needing to be updated of the outdoor EEPROM exists in the indoor EEPROM, the outdoor unit to be upgraded is powered on, a request for upgrading the outdoor EEPROM is sent to the outdoor unit to be upgraded, and the EEPROM data is sent to the outdoor EEPROM again; if the communication is disconnected in the upgrading process, the outdoor unit to be upgraded is powered off, the outdoor unit to be upgraded is powered on again after 1min, the outdoor unit to be upgraded is restarted to send a request for upgrading the outdoor EEPROM, then the step of upgrading the outdoor EEPROM is restarted, and if the outdoor information cannot be received for a certain time t again, a communication fault is reported through the display screen, so that a user needs after-sale service.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. The utility model provides an air conditioner, its characterized in that, air conditioner contains an indoor little the control unit MCU and a plurality of outdoor little the control unit MCU, includes:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
one of the outdoor heat exchanger and the indoor heat exchanger works for the condenser, and the other works for the evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
the indoor coil temperature sensor is used for detecting the temperature of the indoor coil;
the system comprises an indoor Micro Control Unit (MCU), a FLASH memory, an outdoor unit and an EEPROM (electrically erasable programmable read-only memory) module, wherein the MCU is used for writing the EEPROM information of the electrically-charged erasable programmable read-only memory to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into a FLASH region of the MCU, and transmitting EEPROM data to the outdoor MCU to be upgraded according to the outdoor unit model information transmitted by the MCU;
the outdoor micro control unit MCU is used for sending the model information of the outdoor unit to the indoor MCU and upgrading the outdoor micro control unit MCU according to the EEPROM data;
the EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address;
and the EEPROM data is generated according to the outdoor EEPROM information to be upgraded.
2. The air conditioner as claimed in claim 1, wherein the EEPROM data is transmitted to the outdoor MCU to be upgraded according to the outdoor unit model information transmitted from the outdoor micro control unit MCU, specifically:
the indoor MCU acquires outdoor unit model information sent by the outdoor MCU, and judges whether the outdoor unit model information sent by the outdoor MCU is outdoor unit model information of the outdoor MCU to be upgraded;
if the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded, sending the EEPROM data to the outdoor MCU corresponding to the outdoor unit model information;
and if the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded, the EEPROM data is not sent.
3. The air conditioner according to claim 2, wherein the determining whether the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded includes:
judging whether the model information of the outdoor unit sent by the outdoor unit is consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded in the FLASH region of the indoor MCU;
if the outdoor unit model information is consistent with the outdoor unit model information of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is the outdoor unit model information of the outdoor MCU to be upgraded;
and if the outdoor unit model information is not consistent with the model information of the outdoor unit of the outdoor MCU to be upgraded, the outdoor unit model information sent by the outdoor MCU is not the outdoor unit model information of the outdoor MCU to be upgraded.
4. The air conditioner of claim 1, wherein the FLASH section includes a first section, a second section and a third section, the first section and the second section have the same size, and the writing of the EEPROM information to be upgraded and the outdoor unit model information of the outdoor MCU to be upgraded into the FLASH section of the FLASH section includes:
the indoor MCU sets the first interval, the second interval and the third interval in the FLASH interval;
the indoor MCU writes the EEPROM parameter addresses into the first interval in sequence;
the indoor MCU writes the data corresponding to the EEPROM parameter address into the second interval according to the writing sequence of the EEPROM parameter address;
and the indoor MCU writes the outdoor unit model information of the outdoor MCU to be upgraded into the third interval.
5. The air conditioner of claim 1, before transmitting EEPROM data into the outdoor MCU to be upgraded, further comprising:
and the indoor MCU sets an EEPROM updating mark in the EEPROM of the indoor MCU, sends a data sending request to the outdoor MCU to be upgraded and receives a response of the outdoor MCU to be upgraded.
6. The air conditioner as claimed in claim 5, wherein the EEPROM data includes a check code, and the EEPROM data is upgraded according to itself, specifically:
after receiving the EEPROM, the outdoor MCU to be upgraded generates a successful receiving mark and sends the successful receiving mark to the indoor MCU, and meanwhile, the outdoor EEPROM is upgraded according to the EEPROM data;
and after receiving the successful receiving mark, the indoor MCU clears the EEPROM updating mark.
7. The air conditioner as claimed in claim 6, wherein the outdoor MCU to be upgraded generates a reception success flag and sends the reception success flag to the indoor MCU after receiving the EEPROM, and upgrades the outdoor EEPROM according to the EEPROM data, specifically:
the outdoor MCU to be upgraded judges whether the EEPROM data is correct or not according to the check code in the EEPROM data;
and if yes, the outdoor MCU to be upgraded updates the outdoor EEPROM based on the EEPROM parameter address in the EEPROM data and the data corresponding to the EEPROM parameter address, generates the receiving success mark and sends the receiving success mark to the indoor MCU.
8. The air conditioner according to claim 6, further comprising:
and if the indoor MCU does not receive the successful receiving mark within the preset time, starting an exception handling operation.
9. The air conditioner according to claim 8, wherein if the indoor MCU does not receive the reception success flag within a preset time, an exception handling operation is started, specifically:
when the power supply is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, after the indoor MCU is electrified again, the indoor MCU retransmits the EEPROM data to the outdoor MCU to be upgraded;
and when the communication is interrupted and the indoor MCU does not receive the successful receiving mark within the preset time, the indoor MCU performs power-off processing on the outdoor MCU to be upgraded and retransmits the EEPROM data to the outdoor MCU to be upgraded.
10. The remote upgrading method of the air conditioner is characterized by being applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor MCU and a plurality of outdoor MCUs, and comprises the following steps:
the indoor MCU writes outdoor EEPROM information to be upgraded and outdoor unit model information of the outdoor MCU to be upgraded into a FLASH interval of the indoor MCU, wherein the EEPROM information specifically comprises the EEPROM parameter address and data corresponding to the EEPROM parameter address;
the indoor MCU receives outdoor unit model information sent by the outdoor MCU, and takes an outdoor unit corresponding to the outdoor unit model information consistent with the outdoor unit model information of the outdoor MCU to be upgraded in the FLASH interval as the outdoor MCU to be upgraded;
the indoor MCU sets an outdoor EEPROM updating mark and sends EEPROM data to the outdoor MCU to be upgraded, and the EEPROM data is generated based on the outdoor EEPROM information to be upgraded;
if the outdoor MCU to be upgraded is successfully transmitted, clearing the outdoor EEPROM updating mark based on the successful receiving mark returned by the outdoor MCU to be upgraded, and updating the outdoor EEPROM according to the EEPROM data;
and if the sending fails, executing exception handling operation.
CN202010670554.8A 2020-07-13 2020-07-13 Air conditioner and remote upgrading method thereof Active CN113932381B (en)

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