Brushless blower fault saving and recovery method, system, electronic device, storage medium and program product

Abstract

The application discloses a brushless blower fault saving and recovery method and system, electronic equipment, a storage medium and a program product. The method comprises the following steps: monitoring and collecting current operation parameters of the brushless blower; detecting whether the brushless blower has a fault according to the current operation parameters; when it is detected that the brushless blower has a fault, saving the current operation parameters before the fault of the brushless blower and setting a "to be recovered" flag; when the flag is detected, reading the saved current operation parameters before the fault of the brushless blower and recovering the operation of the brushless blower based on the operation parameters. The application saves the operation parameters before the fault of the brushless blower through a non-volatile memory, provides accurate fault reproduction information for technicians, greatly shortens the maintenance and debugging time, can recover the air volume output before the fault within hundreds of milliseconds after resetting, and has little impact on users, and improves the continuity and comfort of product experience and the reliability of system operation.

Description

Technical Field

[0001] This invention relates to the field of vehicle electronics technology, and in particular to a method, system, electronic device, storage medium, and program product for saving and restoring faults in a brushless blower. Background Technology

[0002] Brushless DC blowers are widely used in automotive air conditioning systems, industrial ventilation equipment, and other fields due to their high efficiency, long lifespan, and precise control. Their control systems typically employ microcontrollers to implement complex algorithms, such as field-oriented control (FOC). However, existing technologies suffer from the following significant drawbacks:

[0003] (1) Difficulty in fault diagnosis: When the blower experiences an accidental fault (such as instantaneous overcurrent or communication interference), the system usually restarts and resets. After restarting, all key operating parameters at the time of the fault (such as speed, current, PWM duty cycle, temperature, etc.) are lost, making it difficult for engineers to reproduce and locate the root cause of the fault, resulting in the problem not being fundamentally solved.

[0004] (2) Poor user experience: After a brief malfunction, the blower needs to be restarted from zero and gradually restored to the set speed. During this process, the air volume will be interrupted and delayed, affecting the driving comfort.

[0005] (3) Lack of intelligent recovery mechanism: After a fault is reset, traditional systems cannot determine the operating intention before the fault and can only passively wait for new instructions, thus failing to achieve "seamless" intelligent operation.

[0006] Therefore, there is an urgent need for a technical solution that can save the state in a timely manner when a failure occurs and can quickly return to the working state before the failure after the system is restored. Summary of the Invention

[0007] This invention provides a method, system, electronic device, storage medium, and program product for saving and restoring faults in a brushless blower. When a fault occurs, the current operating parameters of the brushless blower can be saved, and the system can be quickly restored to the state before the fault after a reset.

[0008] According to one aspect of the present invention, a method for saving and restoring faults in a brushless blower is provided, comprising:

[0009] Monitor and collect the current operating parameters of the brushless blower;

[0010] Detect whether the brushless blower is faulty based on the current operating parameters;

[0011] When a fault is detected in the brushless blower, the current operating parameters of the brushless blower before the fault are saved and a "to be restored" flag is set.

[0012] When the flag bit is detected, the saved current operating parameters of the brushless blower before the failure are read, and the operation of the brushless blower is restored based on the operating parameters.

[0013] Optionally, the current operating parameters include the current motor current and the current controller temperature;

[0014] Detecting whether the brushless blower has a fault based on the current operating parameters includes:

[0015] Determine whether the current motor current is greater than a preset current threshold, and / or determine whether the current controller temperature is greater than a preset temperature threshold.

[0016] Optionally, the current operating parameters include the current target speed, current electrical angle, current fault type code, and operating timestamp;

[0017] When a fault is detected in the brushless blower, the current operating parameters of the brushless blower before the fault are saved, and a "to be recovered" flag is set, including:

[0018] When the current motor current is greater than a preset current threshold and / or the current controller temperature is greater than a preset temperature threshold, the current target speed, the current electrical angle, the current fault type code, and the running timestamp are saved, and a "to be recovered" flag is set.

[0019] Optionally, the current operating parameters include the current actual rotational speed;

[0020] Upon detecting the flag bit, reading the saved current operating parameters of the brushless blower before the failure, and restoring the operation of the brushless blower based on the operating parameters includes:

[0021] When the flag bit is detected, the saved current electrical angle and current target speed before the brushless blower malfunction are read, a current vector is injected based on the current electrical angle, and the current actual speed is increased to the current target speed.

[0022] Optionally, after setting the "Pending Recovery" flag, the following may also be included:

[0023] Upon receiving a reset request command, determine whether the "to be restored" flag is detected.

[0024] Optionally, the current operating parameters include at least one of the following:

[0025] The current target speed value, current electrical angle, current actual speed, current phase current value, current controller temperature, current power supply voltage, current fault flag bit, current fault type code, and running timestamp before the fault occurred.

[0026] According to another aspect of the present invention, a brushless blower fault storage and recovery system is provided, comprising:

[0027] A status monitoring module is used to monitor and collect the current operating parameters of the brushless blower;

[0028] The status monitoring module is also used to detect whether the brushless blower has a fault based on the current operating parameters;

[0029] A non-volatile memory module is used to save the current operating parameters of the brushless blower before the fault is detected when the brushless blower is detected, and to set a "to be recovered" flag.

[0030] The status management module is used to read the saved current operating parameters of the brushless blower before the failure when the flag bit is detected, and restore the operation of the brushless blower based on the operating parameters.

[0031] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0032] At least one processor; and

[0033] A memory communicatively connected to the at least one processor; wherein,

[0034] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the brushless blower fault storage and recovery method according to any embodiment of the present invention.

[0035] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions, the computer instructions being configured to cause a processor to execute and implement the brushless blower fault saving and recovery method according to any embodiment of the present invention.

[0036] According to another aspect of the present invention, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the brushless blower fault saving and recovery method described in any embodiment of the present invention.

[0037] This invention provides a method, system, electronic device, storage medium, and program product for saving and restoring fault information for a brushless blower. The method includes: monitoring and collecting the current operating parameters of the brushless blower; detecting whether a fault exists in the brushless blower based on the current operating parameters; when a fault is detected, saving the current operating parameters of the brushless blower before the fault and setting a "to be restored" flag; when the flag is detected, reading the saved current operating parameters of the brushless blower before the fault and restoring the operation of the brushless blower based on the operating parameters. The technical solution provided by this invention saves the current operating parameters of the brushless blower before a fault using non-volatile memory, providing technicians with accurate fault reproduction information, greatly shortening maintenance and debugging time; and enabling the airflow output to be restored to the state before the fault within milliseconds after reset, almost imperceptibly for the user, improving the continuity and comfort of the product experience and the reliability of system operation. It should be understood that the content described in this section is not intended to identify key or important features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating a method for saving and restoring faults in a brushless blower, as provided in an embodiment of the present invention;

[0040] Figure 2 A flowchart illustrating another method for saving and restoring faults in a brushless blower, provided by an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of a brushless blower fault storage and recovery system provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the electronic device used in an embodiment of the present invention to provide a method for saving and restoring faults in a brushless blower. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Figure 1 This is a flowchart illustrating a method for saving and restoring fault data for a brushless blower according to an embodiment of the present invention. This embodiment is applicable to saving and restoring the operating parameters of an automotive brushless DC blower before a fault occurs. This method can be executed by a brushless blower fault saving and restoration system, which can be implemented in hardware and / or software. This system can be configured in any electronic device with communication capabilities. See also... Figure 1 The method includes:

[0046] S110. Monitor and collect the current operating parameters of the brushless blower.

[0047] The current operating parameters refer to key data generated in real time while the blower is operating, reflecting its status. The current operating parameters include at least one of the following: Control command status parameters: the latest Pulse Width Modulation (PWM) command duty cycle or current target speed before the fault occurred. Motor operating status parameters: the rotor's current electrical angle, current actual speed, and current phase current value. System status parameters: the current fault flag bit, the current fault type code, and the operating timestamp. Environmental parameters: the current controller temperature and power supply voltage.

[0048] Specifically, the current operating parameters of the brushless blower are monitored and collected in real time through the status monitoring module integrated inside the microcontroller unit (MCU).

[0049] S120. Detect whether there is a fault in the brushless blower based on the current operating parameters.

[0050] Specifically, the current operating parameters are compared with preset standard values ​​to determine if they exceed the preset standard values. If the current operating parameters exceed the preset standard values, a fault is determined to exist in the brushless blower. Common fault types include overcurrent faults, overheating faults, and stall faults. For example, the current motor current is compared with a preset current threshold to determine if it exceeds the preset current threshold. If it does, an overcurrent fault is determined to exist in the brushless blower.

[0051] S130. When a fault is detected in the brushless blower, the current operating parameters of the brushless blower before the fault are saved and a "to be restored" flag is set.

[0052] Specifically, when a fault is detected in the brushless blower, the MCU, within a very short time (microseconds) before entering reset, quickly writes the current operating parameters (such as the current target speed, current electrical angle, current fault code, and operating timestamp) into a specific area of ​​the ferro-electric random access memory (FRAM) via the Serial Peripheral Interface (SPI), and sets a "to be recovered" flag. The ferro-electric random access memory is non-volatile and can be read and written as quickly as random access memory (RAM).

[0053] This invention, by saving the current operating parameters, serves a crucial role in both the preceding and following stages. Firstly, it connects the initial detection of a fault, preventing it from occurring without a record. Secondly, it provides a basis for subsequent maintenance and troubleshooting by saving the pre-fault operating parameters, and establishes a safety framework for subsequent troubleshooting and recovery by setting a recovery flag. Ultimately, this ensures that the fault does not escalate, maintenance is directed, and recovery is standardized, preventing more serious damage (such as motor burnout) caused by the blower operating with a fault, or secondary problems arising from misoperation after fault resolution.

[0054] S140. When the flag bit is detected, read the saved current operating parameters of the brushless blower before the failure, and restore the operation of the brushless blower based on the operating parameters.

[0055] Specifically, detecting the "Pending Recovery" flag indicates that two key prerequisites have been met: 1. The fault has been resolved: The flag will not disappear out of thin air; only after maintenance personnel have resolved the fault will the system allow entry into the "Detect Flag → Restore Operation" process; 2. Operation needs to be restored: The flag is equivalent to a "start-up signal"—telling the system that "the blower has been repaired and can now be restarted based on historical data, returning to its pre-fault operating state," avoiding unfounded and blind starts. When the flag is detected, the saved current operating parameters of the brushless blower before the fault (such as the current target speed and current electrical angle) are directly read. Subsequently, the control algorithm no longer starts the motor from zero but directly injects the current vector based on the saved current electrical angle and quickly increases the current actual speed to the saved current target speed. The entire recovery process is completed in a very short time, and the occupants of the vehicle do not feel any interruption in airflow. After successful recovery, the "Pending Recovery" flag is cleared.

[0056] This invention provides a method, system, electronic device, storage medium, and program product for saving and restoring fault information for a brushless blower. The method includes: monitoring and collecting the current operating parameters of the brushless blower; detecting whether a fault exists in the brushless blower based on the current operating parameters; when a fault is detected, saving the current operating parameters of the brushless blower before the fault and setting a "to be restored" flag; when the flag is detected, reading the saved current operating parameters of the brushless blower before the fault and restoring the operation of the brushless blower based on the operating parameters. The technical solution provided by this invention uses non-volatile memory to save the current operating parameters of the brushless blower before a fault, providing technicians with accurate fault reproduction information, greatly shortening maintenance and debugging time; and it can restore the airflow output to the state before the fault within milliseconds after reset, with almost no noticeable impact on the user, improving the continuity and comfort of the product experience and the reliability of system operation.

[0057] In some other embodiments, optionally, the current operating parameters include the current motor current and the current controller temperature; step S120 specifically includes:

[0058] Determine whether the current motor current is greater than a preset current threshold, and / or determine whether the current controller temperature is greater than a preset temperature threshold.

[0059] The preset current threshold can be set in advance according to the design specifications of the motor, and the preset temperature threshold can be set in advance according to the temperature resistance specifications of the controller components.

[0060] Specifically, the motor is the power source of the brushless blower, consuming current to drive the blades. The current motor current is the real-time current value of the motor during operation, directly reflecting the motor's load status—the higher the current, the heavier the load on the motor. Therefore, it's necessary to determine if the current motor current exceeds a preset current threshold. If the current current exceeds the preset threshold, the motor is overloaded, potentially indicating an overcurrent fault. If the current current is less than or equal to the preset threshold, the brushless blower is confirmed to be fault-free. The brushless blower's controller is the core control unit (such as an MCU chip), responsible for outputting signals to control the motor speed and regulate the motor current. When the controller is working, it generates heat due to the heating of its components. The current controller temperature is the real-time temperature of the controller's casing or core components, which directly reflects the controller's working health status. Excessive temperature can lead to a decrease in component performance or even burn out the components. Therefore, it is necessary to determine whether the current controller temperature is greater than the preset temperature threshold. If the current controller temperature is greater than the preset temperature threshold, it indicates that the controller is in an overheating state and there may be a risk of overheating failure. If the current controller temperature is less than or equal to the preset temperature threshold, it indicates that the brushless blower is not faulty.

[0061] In some other embodiments, optionally, the current operating parameters include the current target rotational speed, current electrical angle, current fault type code, and operating timestamp; step S130 specifically includes:

[0062] When the current motor current is greater than the preset current threshold and / or the current controller temperature is greater than the preset temperature threshold, the current target speed, current electrical angle, current fault type code and running timestamp are saved, and the "to be recovered" flag is set.

[0063] Specifically, when the current motor current exceeds a preset current threshold and / or the current controller temperature exceeds a preset temperature threshold, the current target speed, current electrical angle, current fault type code, and running timestamp are quickly written to a specific area of ​​the FRAM via the SPI interface, and a "pending recovery" flag is set. Setting the "pending recovery" flag prevents the brushless blower from starting with a fault, thus avoiding secondary damage to the product.

[0064] In some other embodiments, optionally, the current operating parameters include the current actual rotational speed; step S140 specifically includes:

[0065] When the flag is detected, the saved current electrical angle and current target speed before the brushless blower failure are read, the current vector is injected based on the current electrical angle, and the current actual speed is increased to the current target speed.

[0066] Specifically, a current vector is not simply the magnitude of a current value, but a current signal that includes both magnitude and direction (phase). A brushless motor has three-phase windings, and the current vector injects currents of different phases and magnitudes into these three windings, forming a rotating magnetic field—this magnetic field drives the rotor to rotate. Injecting current based on the current electrical angle is because the electrical angle reflects the rotor's real-time position. Therefore, injecting a current vector based on the current electrical angle essentially ensures that the direction of the rotating magnetic field is always precisely matched to the rotor's position. For example, when the rotor is at 30°, injecting a current vector corresponding to the 30° phase into the three-phase windings allows the magnetic field to smoothly drive the rotor to 31°, 32°, and so on, preventing misalignment between the magnetic field direction and the rotor position. Misalignment can lead to motor vibration, low efficiency, or even failure to rotate. Brushed motors rely on brushes for commutation and can rotate with just direct current; however, brushless motors do not have brushes and must rely on precise current vector control to rotate smoothly. The current vector injected during recovery, based on the current electrical angle, serves two core purposes: 1. To avoid start-up jitter / jamming: If the electrical angle is mismatched, the current vector direction will be incorrect, potentially causing the motor to jam or jitter, or even generating a large current that triggers the fault again; 2. To ensure starting efficiency: Matching the current vector to the electrical angle allows the motor to generate maximum driving force with minimal current, preventing excessive current during recovery and protecting the motor and controller. Upon detecting the flag, the system directly reads the saved current target speed and current electrical angle before the brushless blower fault. Subsequently, the control algorithm no longer starts the motor from zero but directly injects the current vector based on the saved current electrical angle, quickly increasing the current actual speed to the saved current target speed. The entire recovery process is completed in a very short time, and passengers inside the vehicle do not perceive any interruption in airflow. After successful recovery, the "Pending Recovery" flag is cleared.

[0067] Figure 2 This is a flowchart illustrating another method for saving and restoring faults in a brushless blower, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. See also... Figure 2 The method includes:

[0068] S210. Monitor and collect the current operating parameters of the brushless blower.

[0069] This step is the same as S110 in the above embodiment, and will not be described again here.

[0070] S220. Determine whether the current motor current is greater than the preset current threshold, and / or determine whether the current controller temperature is greater than the preset temperature threshold.

[0071] This step is the same method step as "Optional, S120 specifically includes" in the above embodiment, and will not be repeated here.

[0072] S230. When the current motor current is greater than the preset current threshold and / or the current controller temperature is greater than the preset temperature threshold, save the current target speed, current electrical angle, current fault type code and running timestamp, and set the "to be recovered" flag.

[0073] This step is the same method step as "Optional, S130 specifically includes" in the above embodiment, and will not be repeated here.

[0074] S240: Receive a reset request command and determine whether the "to be restored" flag is detected.

[0075] Specifically, this step is the entry verification stage of the brushless blower reset and recovery process. Essentially, it first confirms the trigger signal for the recovery request, and then verifies the prerequisite state for recovery—it serves as a threshold for initiating recovery operation after fault resolution, preventing blind recovery without a request and preventing accidental triggering of recovery when there is no fault. The reset request command typically comes from external input or is automatically triggered. External input refers to the technician sending a reset request command to the blower control unit via a vehicle diagnostic tool after troubleshooting. Automatic triggering occurs when the system detects that the fault has been resolved by sensors and automatically sends a reset request command to the control unit without manual intervention.

[0076] S250. When the flag is detected, read the saved current electrical angle and current target speed before the brushless blower failure, inject the current vector based on the current electrical angle, and increase the current actual speed to the current target speed.

[0077] This step is the same method step as "Optional, S140 specifically includes" in the above embodiment, and will not be repeated here.

[0078] The technical solutions provided in the embodiments of the present invention have the following beneficial effects:

[0079] 1. Facilitates fault diagnosis: By saving the "black box" data at the moment of the fault, it provides technicians with accurate information to reproduce the fault, greatly shortening the repair and debugging time.

[0080] 2. Achieve rapid and seamless recovery: For transient failures, the system can restore the airflow output to the level before the failure within hundreds of milliseconds after reset, with almost no noticeable impact on the user, thus improving the continuity and comfort of the product experience.

[0081] 3. Enhance system reliability: This method enables the system to have the intelligent characteristic of "state maintenance", which is especially suitable for application scenarios with high requirements for continuous operation (such as vehicle air conditioning, data center heat dissipation, etc.).

[0082] 4. Low hardware cost: It can be implemented on the existing hardware platform through software upgrades by only adding a small piece of non-volatile memory, making it extremely cost-effective.

[0083] Figure 3 The schematic diagram of a brushless blower fault storage and recovery system provided in an embodiment of the present invention includes: a status monitoring module 310, a non-volatile memory module 320, and a status management module 330.

[0084] The status monitoring module 310 is used to monitor and collect the current operating parameters of the brushless blower.

[0085] The status monitoring module 310 is also used to detect whether there is a fault in the brushless blower based on the current operating parameters.

[0086] The non-volatile memory module 320 is used to save the current operating parameters of the brushless blower before the fault is detected and set the "to be recovered" flag when a fault is detected in the brushless blower.

[0087] The status management module 330 is used to read the saved current operating parameters of the brushless blower before the fault when the flag bit is detected, and restore the operation of the brushless blower based on the operating parameters.

[0088] The brushless blower fault storage and recovery system provided in this embodiment of the invention can execute the brushless blower fault storage and recovery method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0089] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0090] At least one processor; and

[0091] A memory that is communicatively connected to at least one processor; wherein,

[0092] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to execute the brushless blower fault saving and recovery method according to any embodiment of the present invention.

[0093] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the brushless blower fault saving and recovery method described in any embodiment of the present invention.

[0094] According to another aspect of the present invention, a computer program product is provided, the computer program product including a computer program, which, when executed by a processor, implements the brushless blower fault saving and recovery method of any embodiment of the present invention.

[0095] Figure 4This is a schematic diagram of an electronic device for a brushless blower fault storage and recovery method provided in an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0096] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0097] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0098] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as a brushless blower fault saving and recovery method.

[0099] In some embodiments, the brushless blower fault storage and recovery method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the brushless blower fault storage and recovery method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the brushless blower fault storage and recovery method by any other suitable means (e.g., by means of firmware).

[0100] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0101] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0102] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0103] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0104] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0105] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0106] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0107] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for saving and restoring fault information of a brushless blower, characterized in that, include: Monitor and collect the current operating parameters of the brushless blower; Detect whether the brushless blower is faulty based on the current operating parameters; When a fault is detected in the brushless blower, the current operating parameters of the brushless blower before the fault are saved and a "to be restored" flag is set. When the flag bit is detected, the saved current operating parameters of the brushless blower before the failure are read, and the operation of the brushless blower is restored based on the current operating parameters; The current operating parameters include the current motor current and the current controller temperature; Detecting whether the brushless blower has a fault based on the current operating parameters includes: Determine whether the current motor current is greater than a preset current threshold, and / or determine whether the current controller temperature is greater than a preset temperature threshold; The current operating parameters include the current target speed, current electrical angle, current fault type code, and operating timestamp; When a fault is detected in the brushless blower, the current operating parameters of the brushless blower before the fault are saved, and a "to be recovered" flag is set, including: When the current motor current is greater than a preset current threshold and / or the current controller temperature is greater than a preset temperature threshold, the current target speed, the current electrical angle, the current fault type code, and the running timestamp are saved, and a "to be recovered" flag is set. The current operating parameters also include the current actual rotational speed; Upon detecting the flag bit, reading the saved current operating parameters of the brushless blower before the failure, and restoring the operation of the brushless blower based on the operating parameters includes: When the flag bit is detected, the saved current electrical angle and current target speed before the brushless blower malfunction are read, a current vector is injected based on the current electrical angle, and the current actual speed is increased to the current target speed.

2. The method for saving and restoring faults in a brushless blower according to claim 1, characterized in that, After setting the "Pending Recovery" flag, the following is also included: Upon receiving a reset request command, determine whether the "to be restored" flag is detected.

3. A brushless blower fault storage and recovery system, characterized in that, The system is used to perform the brushless blower fault storage and recovery method according to any one of claims 1-2, the system comprising: A status monitoring module is used to monitor and collect the current operating parameters of the brushless blower; The status monitoring module is also used to detect whether the brushless blower has a fault based on the current operating parameters; A non-volatile memory module is used to save the current operating parameters of the brushless blower before the fault is detected, and set a "to be recovered" flag when a fault is detected in the brushless blower. The status management module is used to read the saved current operating parameters of the brushless blower before the failure when the flag bit is detected, and restore the operation of the brushless blower based on the operating parameters.

4. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the brushless blower fault storage and recovery method according to any one of claims 1-2.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the brushless blower fault storage and recovery method as described in any one of claims 1-2.

6. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the brushless blower fault storage and recovery method according to any one of claims 1-2.

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