Method and system for storing latest three fault codes of smoothie machine

Abstract

The invention discloses a method and system for storing newest three fault codes of a smoothie machine, and the method comprises the steps: carrying out the monitoring of a sensor, and carrying out the real-time monitoring of the temperature change of liquid in the smoothie machine; the working current monitoring device is used for monitoring the working current of the motor of the smoothie machine in real time; when the parameters are abnormal, corresponding signals are sent to the microprocessor; the microprocessor analyzes and judges the received signals; comparing the current operation parameters with the working parameters; the microprocessor writes the generated fault code into a specified storage unit; the fault codes are sequentially stored according to the fault occurrence time sequence, when the number of the stored fault codes reaches three times, new fault codes cover the earliest stored fault codes, it is ensured that the latest three times of fault codes are always stored, and the fault codes cannot be lost after a product is powered off. By generating a fault code, key information is provided for maintenance personnel, and blind troubleshooting is avoided; and meanwhile, the three stored fault codes enable maintenance personnel to know the fault frequency and trend and deeply analyze the source.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fault diagnosis and information management, and relates to a method and system for storing the latest three fault codes of a smoothie maker. BACKGROUND

[0002] In the field of ordinary smoothie makers widely used in the current market, fault detection and information feedback mechanism is a key link to ensure normal operation of the equipment and facilitate after-sales maintenance. However, the existing ordinary smoothie makers have many problems in fault information processing that need to be solved. At present, when the ordinary smoothie maker fails, it has a basic fault detection function. When the product detects that a fault occurs, it presents the fault type in the form of a specific character combination or a digital code on the display screen, or uses different indicator light combinations to convey fault information to the user. To some extent, it provides the user with a general direction of the fault, so that the user can initially understand that the smoothie maker has a problem. Referring to Figure 2 The working logic in the prior art.

[0003] However, this existing fault indication method has obvious limitations. On the one hand, the fault code lacks an automatic saving function. When a fault occurs, the specific character combination, digital code displayed on the display screen, or the fault information represented by the indicator light combination needs to be recorded manually by the user in time. If the user fails to record in time, these key information will not be retained. In actual use scenarios, the user may fail to record the fault code in the first time due to various reasons, such as insufficient attention to the fault code, being busy with other matters, etc. This results in that the user cannot provide accurate fault information when contacting the after-sales service or consulting the product manual, increases the difficulty for the maintenance personnel to judge the fault reason, prolongs the maintenance time, and reduces the maintenance efficiency.

[0004] On the other hand, the fault information lacks persistence. Once the smoothie maker product is powered off and restarted, the fault code originally displayed on the display screen or the combination of indicator lights will disappear immediately. This means that even if the fault has occurred before the restart, the maintenance personnel cannot obtain any clues about the previous fault from the equipment itself. In actual maintenance process, many faults may occur intermittently, or the user is not on site when the fault occurs and fails to record the fault information in time. When the maintenance personnel arrives on site, due to the disappearance of the fault information after the restart of the equipment, the actual fault condition cannot be checked, and only a comprehensive check can be carried out, which not only consumes a lot of time and effort, but also may increase the maintenance cost, and even may not be able to completely solve the problem due to the inability to accurately judge the fault reason, affecting the normal use of the smoothie maker and bringing inconvenience to the user.

[0005] In summary, the existing ordinary ice blender has serious deficiencies in fault information recording and tracing, and cannot meet the needs of actual use and maintenance, therefore, a new technology capable of effectively solving the above problems is urgently needed to improve the fault handling efficiency and maintenance quality of the ice blender. SUMMARY

[0006] The purpose of the present application is to solve the problem of the serious deficiencies of the ice blender in fault information recording and tracing in the prior art, which cannot meet the needs of actual use and maintenance, and to provide a method and system for saving the latest three fault codes of an ice blender.

[0007] To achieve the above purpose, the following technical solutions are adopted:

[0008] A method for saving the latest three fault codes of an ice blender, comprising the following steps:

[0009] Sensor monitoring: using the temperature sensor provided in the ice blender, the temperature change of the liquid in the ice blender is monitored in real time, and according to the preset liquid temperature change curve model, the actual temperature change curve is compared with the model curve to determine whether the liquid is injected into the bucket and whether the injected liquid and the selected program correspond;

[0010] Using a working current monitoring device, the working current of the motor of the ice blender is monitored in real time, and current data is collected; when the liquid temperature parameter detected by the sensor exceeds the normal temperature range, or the motor working current parameter exceeds the normal current range, a corresponding signal is sent to the microprocessor to prompt that there may be a fault;

[0011] Microprocessor processing: the microprocessor receives signals from the sensor monitoring step, analyzes and judges the received signals according to the preset program and algorithm; compares the current liquid temperature operating parameter with the normal temperature operating parameter range, and compares the current motor working current operating parameter with the normal current operating parameter range;

[0012] Storage: a non-volatile memory is used as a storage medium; the microprocessor writes the generated fault code into the designated storage unit of the non-volatile memory; the fault codes are stored in sequence according to the time of fault occurrence, and when the number of stored fault codes reaches three, the latest fault code will overwrite the earliest stored fault code, ensuring that the latest three fault codes are always saved, and the fault codes will not be lost after the product is powered off.

[0013] Further improvements of the present application are:

[0014] The liquid temperature change curve model construction includes the following steps:

[0015] Determine the working procedure classification, according to the design function of the smoothie maker and the user's demand, clearly divide different working procedure categories;

[0016] Collect normal temperature data, in the laboratory environment or actual use scene, carry out multiple normal operation tests for each working procedure; during each test, use a temperature measuring device with precision not less than the built-in temperature sensor of the smoothie maker, from the start of liquid injection to the completion of smoothie making, record the change of liquid temperature with time at time intervals in real time, and obtain a series of temperature data points;

[0017] Draw the temperature change curve, take time as the horizontal axis and liquid temperature as the vertical axis, draw the temperature data points collected under each working procedure into a curve, and use data fitting method to obtain a smooth temperature change curve that can accurately reflect the trend of liquid temperature change with time under normal injection of liquid for the working procedure;

[0018] Determine the temperature range, for the temperature change curve corresponding to each working procedure, consider the actual use factors of environmental temperature fluctuation and liquid initial temperature difference, determine the fluctuation interval as the temperature range of normal liquid injection for the working procedure by statistical analysis of multiple test data and calculation of standard deviation, and take the average temperature curve as the center.

[0019] The working current monitoring device is used to monitor the working current of the motor of the smoothie maker in real time, and collect current data, specifically:

[0020] A current sensor is installed in the power supply circuit of the motor, the current sensor is a Hall effect current sensor, which indirectly obtains the current size by measuring the Hall voltage perpendicular to the current and magnetic field direction based on the Hall effect principle; the current sensor sets the sampling frequency according to the working characteristics and fault diagnosis requirements of the motor, and samples the working current of the motor in real time.

[0021] The microprocessor stores the received current data and arranges them in time sequence to form a time sequence of current data; the microprocessor analyzes and processes the stored current data according to the preset fault judgment algorithm and threshold value, judges whether the motor has overload or short circuit fault by comparing the current value with the normal working current range, and judges whether the mechanical parts of the motor have faults by analyzing the waveform characteristics of the current;

[0022] According to the fault judgment result, the microprocessor triggers the alarm device to issue an audible and visual alarm signal to remind the operator to handle, uploads the fault information to the upper computer monitoring system for remote monitoring and fault diagnosis, and automatically adjusts the working parameters of the motor or takes protective measures according to the severity of the fault.

[0023] The microprocessor records time information of the fault occurrence while generating the fault code, and stores the time information in the non-volatile memory together with the fault code; and displays the fault code while displaying the corresponding fault occurrence time.

[0024] The method further comprises a query step, when the product is powered on again, the repairer triggers the display of the fault code through a specific operation; the specific operation is to press the start-stop and menu buttons for several seconds in the product off state, and enter the fault query mode after the prompt sound;

[0025] After entering the fault query mode, the repairer displays the stored fault code through the button, and if there is no display, it means no fault.

[0026] The microprocessor determines the corresponding fault type when processing, specifically: if an abnormality is found, the corresponding fault type is determined; when the motor working current is higher than 1.2 times of the set value, it is determined as a motor fault; when the temperature sensor senses that the liquid temperature is higher than the set value, it is determined as an abnormal liquid temperature; and the corresponding fault code is generated to be presented in the form of indicator light blinking combination.

[0027] A system for an ice blender to save the latest three fault codes, comprising: a sensor monitoring module:

[0028] A temperature monitoring unit: a temperature sensor is arranged in the ice blender for real-time monitoring of the temperature change of the liquid in the ice blender; according to a pre-set liquid temperature change curve model, by comparing the actual temperature change curve with the model curve, it is determined whether the liquid is injected into the bucket and whether the injected liquid and the selected program correspond;

[0029] A current monitoring unit: a working current monitoring device is used to monitor the working current of the motor of the ice blender in real time, and collect current data;

[0030] A signal sending unit: when the temperature monitoring unit detects that the liquid temperature parameter exceeds the normal temperature range, or the current monitoring unit detects that the motor working current parameter exceeds the normal current range, it sends a corresponding signal to the microprocessor processing module to prompt that there may be a fault;

[0031] A microprocessor processing module: receives signals from the sensor monitoring module, analyzes and judges the received signals according to pre-set programs and algorithms; compares the current liquid temperature operating parameter with the normal temperature operating parameter range, and compares the current motor working current operating parameter with the normal current operating parameter range;

[0032] The storage module uses a non-volatile memory as a storage medium; the microprocessor processing module writes the generated fault code into a designated storage unit of the non-volatile memory; the fault codes are stored in sequence according to the time of fault occurrence, and when the number of stored fault codes reaches three times, the latest fault code will overwrite the earliest stored fault code, ensuring that the latest three fault codes are always saved, and the fault codes will not be lost after the product is powered off.

[0033] The system further comprises a fault code reading module connected with the storage module, for reading the latest three fault codes saved in the storage module, so as to analyze and troubleshoot the fault of the ice blender by the maintenance personnel.

[0034] The non-volatile memory is at least one of a flash memory and an electrically erasable programmable read-only memory (EEPROM), to ensure that the fault code data can be reliably saved in the case of power failure.

[0035] Compared with the prior art, the present application has the following beneficial effects:

[0036] The method for saving the latest three fault codes of the ice blender in the present application generates fault codes by real-time monitoring of liquid temperature and motor working current and comparing with normal parameters, to provide key information for maintenance personnel and avoid blind troubleshooting; meanwhile, the saved three fault codes can enable the maintenance personnel to understand the fault frequency and trend and deeply analyze the root cause. In terms of maintenance efficiency, the maintenance personnel can quickly obtain fault information, quickly develop a maintenance plan according to the code, reduce the preparation time, reduce the probability of misjudgment and rework, save costs and improve the maintenance quality. The method can enhance the reliability of the product, real-time monitoring and early warning can detect abnormalities in the early stage of failure, prevent the expansion of the fault, reduce the risk of equipment damage, support preventive maintenance, arrange the replacement of vulnerable parts in advance, and ensure production continuity. In terms of user experience, quick and accurate diagnosis and maintenance can reduce the downtime of the ice blender, avoid business interruption in commercial places, improve customer satisfaction, and enable users to be more confident in product quality, enhance trust and loyalty. In addition, the method is conducive to optimizing data management and analysis, and the accumulated fault data provides a basis for manufacturers to understand the fault conditions of the product in different environments, helps product improvement and optimization, supports product upgrading, improves performance and quality, and enhances market competitiveness. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 is a working logic diagram of the present application;

[0039] Figure 2 is a working logic diagram in the prior art. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0042] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0043] The present application will be described in further detail below with reference to the drawings:

[0044] Reference is made to Figure 1 is a working logic of the present application, the method for the smoothie machine in the present application to save the latest three fault codes, comprising the following steps:

[0045] Sensor monitoring: using the temperature sensor arranged in the smoothie machine, the temperature change of the liquid in the smoothie machine is monitored in real time, according to the preset liquid temperature change curve model, by comparing the actual temperature change curve with the model curve, it is determined whether the material bucket is injected with liquid and whether the injected liquid and the selected program correspond.

[0046] The liquid temperature change curve model construction comprises the following steps:

[0047] Determine the working program classification: according to the design function of the smoothie machine and the user demand, different working program categories are clearly divided;

[0048] Collect normal temperature data, carry out multiple normal operation tests for each working procedure in a laboratory environment or actual use scene; at each test, use a temperature measuring device with precision not less than the built-in temperature sensor of the ice blender, record the change of liquid temperature with time in real time from the start of liquid injection to the completion of smoothie making at time intervals, and obtain a series of temperature data points;

[0049] Draw a temperature change curve, with time as the horizontal axis and liquid temperature as the vertical axis, plot the temperature data points collected under each working procedure into a curve, and use data fitting method to obtain a smooth temperature change curve that can accurately reflect the trend of liquid temperature change with time when normal liquid is injected under the working procedure;

[0050] Determine the temperature range, for the temperature change curve corresponding to each working procedure, comprehensively consider the actual use factors of environmental temperature fluctuation and liquid initial temperature difference, through statistical analysis of multiple test data and calculation of standard deviation, determine the fluctuation interval as the temperature range of normal liquid injection under the working procedure, taking the average temperature curve as the center.

[0051] Use the working current monitoring device to monitor the working current of the motor of the ice blender in real time, collect current data; when the liquid temperature parameter detected by the sensor exceeds the normal temperature range, or the motor working current parameter exceeds the normal current range, send a corresponding signal to the microprocessor to prompt possible faults.

[0052] Specifically,

[0053] Install a current sensor in the power supply circuit of the motor, the current sensor is a Hall effect current sensor, which indirectly obtains the current size by measuring the Hall voltage perpendicular to the current and magnetic field direction based on the Hall effect principle; the current sensor sets the sampling frequency according to the working characteristics and fault diagnosis requirements of the motor, and samples the motor working current in real time.

[0054] Microprocessor processing, the microprocessor receives signals from the sensor monitoring step, analyzes and judges the received signals according to the preset program and algorithm; compare the current liquid temperature operating parameter with the normal temperature operating parameter range, and compare the current motor working current operating parameter with the normal current operating parameter range.

[0055] The microprocessor stores the received current data and arranges them in time sequence to form a time sequence of current data; the microprocessor analyzes and processes the stored current data according to the preset fault judgment algorithm and threshold value, judges whether the motor has overload or short circuit fault by comparing the current current value with the normal working current range, and judges whether the mechanical parts of the motor have faults by analyzing the waveform characteristics of the current;

[0056] According to the fault judgment result, the microprocessor triggers the alarm device to issue an audible and light alarm signal to remind the operator to handle it, uploads the fault information to the upper computer monitoring system for remote monitoring and fault diagnosis, and automatically adjusts the working parameters of the motor or takes protective measures according to the severity of the fault.

[0057] The microprocessor records the time information of the fault occurrence at the same time of generating the fault code, and stores the time information together with the fault code in the non-volatile memory; when displaying the fault code, the corresponding fault occurrence time is also displayed.

[0058] The microprocessor determines the corresponding fault type during processing, specifically: if an abnormality is found, the corresponding fault type is determined; when the motor working current is higher than 1.2 times of the set value, it is determined as a motor fault; when the temperature sensor senses that the liquid temperature is higher than the set value, it is determined as an abnormal liquid temperature; and the corresponding fault code is generated to present in the form of indicator light blinking combination.

[0059] Storage, using non-volatile memory as storage medium; the microprocessor writes the generated fault code into the designated storage unit of the non-volatile memory; the fault codes are stored in sequence according to the time of fault occurrence, when the number of stored fault codes reaches three times, the newest fault code will overwrite the earliest stored fault code, ensuring that the latest three fault codes are always saved, and the fault codes will not be lost after the product is powered off.

[0060] Query step, when the product is powered on again, the maintainer triggers the fault code display through specific operation; the specific operation is to press the start-stop and menu keys for several seconds in the product shutdown state, and after the prompt sound, enter the fault query mode;

[0061] After entering the fault query mode, the maintainer displays the stored fault code through the key, if there is no display, it means no fault.

[0062] Precise positioning of fault reason: by real-time monitoring of the liquid temperature and motor working current in the ice blender, and comparing with the normal parameter range to generate fault codes. These fault codes are like the "medical record" of the ice blender, which records the key information when the fault occurs. Maintenance personnel can quickly determine whether the fault is caused by abnormal liquid state (such as not injecting liquid or injecting liquid not matching the program), or abnormal motor working current (such as overload, short circuit, etc.), so as to accurately locate the fault reason, avoid blind troubleshooting, and save a lot of time and effort.

[0063] Provide historical failure reference: save the latest three fault codes, which can help maintenance personnel understand the frequency and trend of ice blender failure. If the same type of fault code appears multiple times, it may indicate a potential design flaw or aging problem in the component or system, which can help analyze the root cause of the failure and take more effective maintenance measures, rather than just solving the current one-time failure.

[0064] Quickly obtain fault information: when the ice blender fails, the maintenance personnel do not need to spend a lot of time on complex detection and debugging, but only need to read the stored fault code to quickly understand the approximate situation and occurrence time of the failure. This greatly shortens the preparation time before maintenance, so that maintenance personnel can develop maintenance programs more quickly, carry out maintenance work, and improve overall maintenance efficiency.

[0065] Reduce misjudgment and rework: accurate fault codes can provide clear maintenance direction for maintenance personnel, avoiding incorrect maintenance operations caused by misjudgment of failure causes. This not only reduces unnecessary replacement of parts and reduces maintenance costs, but also avoids secondary failures caused by improper maintenance, improves maintenance quality, and reduces the occurrence of rework.

[0066] An embodiment of the present application is a system for saving the latest three fault codes of an ice blender, characterized in that it comprises a sensor monitoring module:

[0067] Temperature monitoring unit: a temperature sensor is arranged in the ice blender to monitor the temperature change of the liquid in the ice blender in real time; according to a pre-set liquid temperature change curve model, the actual temperature change curve is compared with the model curve to determine whether the liquid is injected into the bucket and whether the injected liquid and the selected program correspond;

[0068] Current monitoring unit: a working current monitoring device is used to monitor the working current of the motor of the ice blender in real time, and collect current data;

[0069] Signal sending unit: when the liquid temperature parameter detected by the temperature monitoring unit exceeds the normal temperature range, or the motor working current parameter monitored by the current monitoring unit exceeds the normal current range, the corresponding signal is sent to the microprocessor processing module to prompt possible failure;

[0070] Microprocessor processing module: receives signals from the sensor monitoring module, analyzes and judges the received signals according to pre-set programs and algorithms; compares the current liquid temperature operating parameter with the normal temperature operating parameter range, and compares the current motor working current operating parameter with the normal current operating parameter range;

[0071] The storage module uses a non-volatile memory as a storage medium; the microprocessor processing module writes the generated fault code into the designated storage unit of the non-volatile memory; the fault codes are stored in sequence according to the time sequence of the occurrence of the fault, and when the number of stored fault codes reaches three times, the latest fault code will overwrite the earliest stored fault code, ensuring that the latest three fault codes are always saved, and the fault codes will not be lost after the product is powered off. The non-volatile memory is at least one of a flash memory and an electrically erasable programmable read-only memory (EEPROM) to ensure that the fault code data can be reliably saved in the event of power failure.

[0072] The fault code reading module is connected with the storage module and is used to read the latest three fault codes saved in the storage module, so as to analyze and troubleshoot the fault of the ice blender by the maintenance personnel.

[0073] Real-time monitoring and early warning: In the present application, the key parameters of the ice blender are monitored in real time by the sensor, which can detect abnormal conditions in the early stage of failure and generate fault codes in time. This allows the operator to take appropriate measures before the fault further deteriorates, such as stopping the equipment operation, checking and repairing, etc., thereby effectively preventing the expansion of the fault, reducing the risk of equipment damage, and improving the reliability and stability of the product.

[0074] Supporting preventive maintenance: By analyzing the saved fault codes, the possible failure trend of the ice blender can be predicted, and preventive maintenance work can be arranged in advance. For example, if the fault code of a certain component appears frequently, the component can be replaced in advance to avoid sudden failure during production, which affects the normal use of the ice blender and ensures the continuity and stability of production.

[0075] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for storing the latest three fault codes of a smoothie machine, characterized in that, Includes the following steps: Sensor monitoring utilizes temperature sensors installed inside the blender to monitor the temperature changes of the liquid inside the blender in real time. Based on a preset liquid temperature change curve model, the actual temperature change curve is compared with the model curve to determine whether liquid has been injected into the hopper and whether the injected liquid corresponds to the selected program. The working current monitoring device is used to monitor the working current of the smoothie machine motor in real time and collect current data. When the sensor detects that the liquid temperature parameter is outside the normal temperature range, or the motor operating current parameter is outside the normal current range, a corresponding signal is sent to the microprocessor to indicate that there may be a fault. The microprocessor receives signals from the sensor monitoring steps, analyzes and judges the received signals according to the preset program and algorithm; compares the current liquid temperature operating parameters with the normal temperature operating parameter range, and compares the current motor operating current operating parameters with the normal current operating parameter range. Storage uses non-volatile memory as the storage medium; The microprocessor writes the generated fault code into a specified memory location in the non-volatile memory; Fault codes are stored sequentially according to the time of occurrence of the fault. When the number of stored fault codes reaches three, the new fault code will overwrite the oldest stored fault code, ensuring that the latest three fault codes are always saved and that the fault codes will not be lost after the product is powered off.

2. The method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, The construction of the liquid temperature change curve model includes the following steps: The work process categories are determined based on the design functions of the smoothie machine and user needs, and different work process categories are clearly defined. Collect normal temperature data and conduct multiple normal operation tests for each work procedure in a laboratory environment or actual use scenario. During each test, use a temperature measuring device with an accuracy no less than that of the temperature sensor built into the smoothie machine to record the change of liquid temperature over time at time intervals from the start of liquid injection to the completion of smoothie making, and obtain a series of temperature data points. Plot the temperature change curve with time on the horizontal axis and liquid temperature on the vertical axis. Plot the temperature data points collected under each working procedure into a curve, and use the data fitting method to obtain a smooth temperature change curve that can accurately reflect the trend of liquid temperature change over time when the liquid is injected normally under the working procedure. To determine the temperature range, for each working procedure, the temperature change curve is determined by comprehensively considering the actual usage factors such as ambient temperature fluctuations and initial liquid temperature differences. Through statistical analysis of multiple test data and calculation of the standard deviation, the fluctuation range is determined as the normal injection temperature range of the liquid under that working procedure, with the average temperature curve as the center.

3. The method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, The method of using a working current monitoring device to monitor the working current of the smoothie machine motor in real time and collect current data specifically includes: A current sensor is installed in the power supply line of the motor. The current sensor is a Hall effect current sensor. Based on the Hall effect principle, the magnitude of the current is indirectly obtained by measuring the Hall voltage generated perpendicular to the direction of the current and magnetic field. The current sensor sets the sampling frequency according to the working characteristics of the motor and the fault diagnosis requirements to sample the motor's working current in real time.

4. The method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, The microprocessor stores the received current data and arranges it in chronological order to form a time series of the current data. The microprocessor analyzes and processes the stored current data according to a preset fault judgment algorithm and threshold. It judges whether the motor has overload or short circuit faults by comparing the current current value with the normal operating current range, and judges whether the mechanical parts of the motor have faults by analyzing the waveform characteristics of the current. Based on the fault diagnosis, the microprocessor triggers the alarm device to issue an audible and visual alarm signal to remind the operator to handle the situation. The fault information is uploaded to the host computer monitoring system for remote monitoring and fault diagnosis, and the operating parameters of the motor are automatically adjusted or protective measures are taken according to the severity of the fault.

5. A method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, While generating fault codes, the microprocessor records the time information of the fault occurrence and stores the time information and fault codes together in non-volatile memory. When displaying a fault code, the corresponding time of the fault occurrence is also displayed.

6. The method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, The method also includes a query step. When the product is powered on again, the repairman triggers the display of the fault code through a specific operation. The specific operation is to press and hold the start / stop and menu buttons for several seconds while the product is powered off. After the prompt sound, the fault query mode is entered. After entering the fault query mode, the repairman can display the stored fault codes by pressing the buttons. If no codes are displayed, it means there is no fault.

7. A method for storing the latest three fault codes of a smoothie machine as described in claim 1, characterized in that, The microprocessor determines the corresponding fault type during processing. Specifically, if an abnormality is detected, the corresponding fault type is determined. When the motor operating current is higher than 1.2 times the set value, it is determined to be a motor fault. When the temperature sensor detects that the liquid temperature is higher than the set value, it is determined to be an abnormal liquid temperature. The corresponding fault code is generated and presented in the form of a combination of flashing indicator lights.

8. A system for storing the latest three fault codes of a smoothie machine, characterized in that, include: Sensor monitoring module: Temperature monitoring unit: A temperature sensor is installed inside the blender to monitor the temperature change of the liquid inside the blender in real time; based on the preset liquid temperature change curve model, by comparing the actual temperature change curve with the model curve, it determines whether liquid has been injected into the hopper and whether the injected liquid corresponds to the selected program. Current monitoring unit: Utilizes a working current monitoring device to monitor the working current of the smoothie machine motor in real time and collect current data; Signal transmitting unit: When the liquid temperature parameter detected by the temperature monitoring unit exceeds the normal temperature range, or the motor operating current parameter detected by the current monitoring unit exceeds the normal current range, the corresponding signal is sent to the microprocessor processing module to indicate that there may be a fault. Microprocessor processing module: Receives signals from the sensor monitoring module, analyzes and judges the received signals according to preset programs and algorithms; compares the current liquid temperature operating parameters with the normal temperature operating parameter range, and compares the current motor operating current operating parameters with the normal current operating parameter range. Storage module: Uses non-volatile memory as the storage medium; The microprocessor processing module writes the generated fault code into a specified memory cell in the non-volatile memory; Fault codes are stored sequentially according to the time of occurrence of the fault. When the number of stored fault codes reaches three, the new fault code will overwrite the oldest stored fault code, ensuring that the latest three fault codes are always saved and that the fault codes are not lost after the product is powered off.

9. A system for storing the latest three fault codes of a smoothie machine as described in claim 8, characterized in that, The system also includes a fault code reading module, which is connected to the storage module and is used to read the latest three fault codes stored in the storage module so that maintenance personnel can analyze and troubleshoot the slush machine faults.

10. A system for storing the latest three fault codes of a smoothie machine as described in claim 8, characterized in that, The non-volatile memory is at least one of Flash Memory and Electrically Erasable Programmable Read-Only Memory (EEPROM) to ensure that fault code data can be reliably saved in the event of power failure.

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