Air conditioner filter screen purification reminding method and device and related assembly

Abstract

The invention discloses an air conditioner filter screen purification reminding method and device and related assemblies, and the method comprises the steps that the size of driving current when a filter screen is driven to reach a preset angle after an air conditioner is powered on for the first time or a new filter screen is replaced is obtained, and first current is obtained; obtaining the size of a driving current for driving the filter screen to reach a preset angle when the filter screen reaches the preset angle when the air conditioner is started, and obtaining a second current; a current and weight mapping table is obtained, and the dust weight is obtained according to the current relation between the second current and the first current and the current and weight mapping table; whether the dust weight is larger than a weight threshold value or not is judged; if the dust weight is larger than a weight threshold value, a user is reminded to replace the filter screen. The weight of the filter screen is judged by monitoring the driving current when the air conditioner filter screen moves to the preset angle, so that whether the filter screen is blocked or not is judged, a user is reminded to replace the purification filter screen, the detection sensitivity and accuracy are high, the false alarm probability is remarkably reduced, and the alarm accuracy and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioning filter purification reminder method, device and related components. Background Art

[0002] With the advancement of science and technology and consumers' increasing attention to a healthy living environment, fresh air air conditioners, as an innovative product that combines traditional air conditioning functions with fresh air ventilation technology, have gradually emerged in the market. Fresh air air conditioners introduce fresh air from the outdoors, purify it internally, and then send it indoors, while exhausting the dirty air indoors, effectively improving indoor air quality and becoming an important device in modern home life.

[0003] However, the fresh air air conditioner pursues high efficiency and compactness in design, and its internal structure space is relatively small, which directly leads to a significant compression of the volume of the internal purification filter. As the core component of the fresh air air conditioner, the purification filter is responsible for filtering pollutants such as dust and particulate matter in the air to ensure the cleanliness of the air delivered to the room. However, due to volume limitations, the dust holding capacity of the purification filter is generally low, and it is difficult to carry a large amount of dust accumulation. After long-term operation, the purification filter is easily blocked by dust and particulate matter, which not only reduces the fresh air volume of the air conditioner, but also may affect the overall performance and service life.

[0004] In response to the problem of fresh air air conditioner purification filter clogging, the existing solutions on the market mostly use the method of timer reminder, that is, to send reminders to users to clean the purification filter according to the preset time interval. The original intention of this method is to help users develop good maintenance habits and ensure the continuous and effective operation of the purification filter. However, in actual applications, the timer reminder method has many limitations. On the one hand, if the user does not use the fresh air air conditioner for a long time, even if there is not much dust accumulation in the purification filter, the system will still issue a cleaning reminder on time, resulting in unnecessary false alarms and increasing user troubles. On the other hand, when the outdoor air quality is poor, the purification filter may be quickly clogged in a short time, and the timer reminder cannot reflect the actual clogging of the filter in real time, and often delayed alarms occur, affecting the normal operation of the air conditioner and indoor air quality. Summary of the invention

[0005] The purpose of the present invention is to provide an air conditioning filter purification reminder method, device and related components, aiming to solve the problem that the existing timing reminder method cannot accurately confirm whether the filter is blocked.

[0006] In a first aspect, an embodiment of the present invention provides an air conditioner filter purification reminder method, comprising:

[0007] Obtaining a driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, to obtain a first current;

[0008] Acquire the magnitude of the driving current when the filter reaches a predetermined angle when the air conditioner is turned on, and obtain the second current;

[0009] Acquire a current and weight mapping table, and obtain the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table;

[0010] Determining whether the dust weight is greater than a weight threshold;

[0011] If the dust weight is greater than the weight threshold, the user is reminded to replace the filter.

[0012] In a second aspect, an embodiment of the present invention provides an air conditioner filter purification reminder device, comprising:

[0013] A first current acquisition unit is used to acquire a driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, so as to obtain a first current;

[0014] A second current acquisition unit is used to acquire the magnitude of a driving current when the filter reaches a predetermined angle when the air conditioner is turned on, and obtain a second current;

[0015] a dust weight acquisition unit, configured to acquire a current and weight mapping table, and obtain the dust weight according to a current relationship between the second current and the first current and the current and weight mapping table;

[0016] A judging unit, used for judging whether the dust weight is greater than a weight threshold;

[0017] The reminder unit is used to remind the user to replace the filter if the dust weight is greater than a weight threshold.

[0018] In a third aspect, an embodiment of the present invention provides an air conditioner, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the air conditioner filter purification reminder method described in the first aspect when executing the computer program.

[0019] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the air conditioning filter purification reminder method described in the first aspect above is implemented.

[0020] The present invention discloses an air conditioner filter purification reminder method, device and related components, the method includes: obtaining the driving current size when the air conditioner is powered on for the first time or after the new filter is replaced, and obtaining the first current; obtaining the driving current size when the filter reaches the predetermined angle when the air conditioner is turned on, and obtaining the second current; obtaining the current and weight mapping table, and obtaining the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table; judging whether the dust weight is greater than the weight threshold; if the dust weight is greater than the weight threshold, reminding the user to replace the filter. The present invention judges the filter weight by monitoring the driving current size when the air conditioner filter moves to a predetermined angle, thereby judging whether the filter is blocked, and then reminding the user to replace the purification filter. The detection sensitivity and accuracy are high, significantly reducing the probability of false alarms, and improving the accuracy and reliability of the alarm. The embodiment of the present invention also provides an air conditioner filter purification reminder device, a computer-readable storage medium and an air conditioner, which have the above-mentioned beneficial effects and are not repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1 This is a flow chart of the air conditioner filter purification reminder method;

[0023] Figure 2 Another flowchart of the air conditioner filter purification reminder method is shown;

[0024] Figure 3 This is a schematic diagram of the principle of the air conditioning filter purification reminder method;

[0025] Figure 4 The figure is a schematic block diagram of an air conditioning filter purification reminder device. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more of the features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] See also Figure 1 and 2 This embodiment provides an air conditioner filter purification reminder method, including:

[0031] S101: Obtaining a driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, to obtain a first current;

[0032] Specifically, the air conditioner is powered on for the first time or the filter is replaced with a new filter and the filter is driven to reach a predetermined angle (i.e. Figure 3 The driving current magnitude at the designated position C) in the first current is obtained by:

[0033] When the air conditioner is powered on for the first time or a new filter is replaced, the driving current magnitude when the filter is driven to reach a predetermined angle is recorded according to a first predetermined number of times and a first predetermined time interval;

[0034] The average value of all recorded driving current magnitudes is calculated to obtain the first current.

[0035] By recording the driving current multiple times (first predetermined times), the accidental error that may be caused by a single measurement can be reduced, and the reliability of the data can be improved. At the same time, by recording multiple times at the first predetermined time interval, the data analysis can be performed after the system gradually stabilizes, thereby improving the stability of the data. In addition, calculating the average value of all recorded values ​​can further smooth the data and reduce fluctuations, so that the first current value obtained is closer to the true value.

[0036] S102: Obtaining a driving current magnitude when the filter reaches a predetermined angle when the air conditioner is turned on, and driving the filter to reach a predetermined angle, to obtain a second current;

[0037] Specifically, obtaining the driving current magnitude when the filter reaches a predetermined angle when the air conditioner is turned on, and obtaining the second current includes:

[0038] According to the second predetermined number of times and the second predetermined time interval, the magnitude of the driving current when the filter reaches the predetermined angle when the air conditioner is turned on next time is obtained;

[0039] The average value of all acquired driving current magnitudes is calculated to obtain the second current.

[0040] By recording the driving current multiple times (the second predetermined number of times), the accidental error that may be caused by a single measurement can be reduced, and the reliability of the data can be improved. At the same time, by recording multiple times at the second predetermined time interval, the stability of the data is improved. In addition, calculating the average value of all recorded values ​​can further smooth the data and reduce fluctuations, so that the obtained second current value is closer to the true value.

[0041] In some embodiments, when the filter runs to a specified angle C, the driving current size begins to be recorded. In order to reduce errors, the data is collected every 100 ms (i.e., the second predetermined time). After collecting 10 times (i.e., the second predetermined number of times), the average value is taken as the current value when the action reaches the specified angle.

[0042] The method of collecting data at regular intervals (every 100ms) and taking the average value after multiple collections can smooth out some instantaneous fluctuations and noise, making the final current value more representative of the actual driving state of the filter at a specified angle. This not only improves the accuracy of the data, but also enhances the reliability of the data.

[0043] S103: Acquire a current and weight mapping table, and obtain dust weight according to a current relationship between the second current and the first current and the current and weight mapping table;

[0044] Specifically, the current and weight mapping table is obtained as follows:

[0045] Obtain the driving current magnitude when loads of different weights reach a predetermined angle;

[0046] The weight difference of loads of different weights and the corresponding current difference are calculated to generate a current and weight mapping table, as shown in Table 1.

[0047] Table 1

[0048] Current difference I0 I1 I2 I3 I4 I5 I6 I7 I8 weight N0 N1 N2 N3 N4 N5 N6 N7 N8

[0049] By obtaining the driving current of loads of different weights when they reach a predetermined angle, the accuracy of the data can be ensured. This method can reflect the direct relationship between the load weight and the driving current, and provide accurate basic data for the subsequent establishment of a mapping table. Calculating the weight difference between loads of different weights and the corresponding current difference can clearly reveal the mapping relationship between weight change and current change. This clear mapping relationship helps to quickly and accurately infer the weight of the load through the current value in practical applications.

[0050] In some embodiments, obtaining a current and weight mapping table, and obtaining the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table, comprises:

[0051] Get the current and weight mapping table;

[0052] calculating a current difference between the second current and the first current;

[0053] The current difference is matched with the current and weight mapping table to obtain the corresponding weight difference, which is used as the dust weight.

[0054] Since the current and weight mapping table is based on experimental data, it can accurately reflect the relationship between current and weight. This makes the method of estimating dust weight by current difference more accurate. At the same time, by comparing the current values ​​at two time points to calculate the difference, the impact of single measurement errors can be reduced, further improving the accuracy of the results.

[0055] In a specific application scenario, a current and weight mapping table is obtained; then the current difference I3 between the second current and the first current is calculated; then the current difference I3 is matched with the current and weight mapping table to obtain a corresponding weight difference N3 as the dust weight.

[0056] In some embodiments, the current and weight mapping table is obtained as follows:

[0057] The driving current magnitude when loads of different weights reach a predetermined angle is obtained, and a current and weight mapping table is generated, as shown in Table 2.

[0058] Table 2

[0059] Current I10 I11 I12 I13 I14 I15 I16 I17 I18 weight N10 N11 N12 N13 N14 N15 N16 N17 N18

[0060] Then, a current and weight mapping table is obtained, and the dust weight is obtained according to the current relationship between the second current and the first current and the current and weight mapping table, including:

[0061] Obtain a current and weight mapping table, and obtain a second weight corresponding to the second current according to the current and weight mapping table, and simultaneously obtain a first weight corresponding to the first current according to the current and weight mapping table;

[0062] The weight difference between the second weight and the first weight is calculated, and the weight difference is used as the dust weight.

[0063] The generation of the current and weight mapping table is based on experimental data, which is usually obtained under controlled conditions and can therefore more accurately reflect the relationship between current and weight. This allows the conversion of current to weight through the mapping table to be highly accurate. By comparing the weight values ​​corresponding to the second current and the first current, the weight difference can be calculated, which directly reflects the increase in load (here specifically dust). Due to the accuracy of the mapping table and the precision of the current measurement, the accuracy of this calculation method is also relatively high.

[0064] In a specific application scenario, a current and weight mapping table is obtained, and the second weight N16 corresponding to the second current I16 is obtained according to the current and weight mapping table, and the first weight N10 corresponding to the first current I10 is obtained according to the current and weight mapping table; then the weight difference between the second weight N16 and the first weight N10 (ie, N16-N10) is calculated, and the weight difference is used as the dust weight.

[0065] In some embodiments, it also includes:

[0066] Obtaining the running time of the driving component driving the filter;

[0067] determining whether the running time reaches a third predetermined time;

[0068] If the running time reaches a third predetermined time, the performance of the driving member is tested;

[0069] If the performance of the driving member reaches the predetermined performance, the operation is terminated;

[0070] If the performance of the driving member does not reach the predetermined performance, recalibration is performed to generate a current and weight mapping table;

[0071] If the running time does not reach the third predetermined time, the running time of the driving member continues to be acquired.

[0072] By regularly obtaining the time the filter is driven and running, and setting a third predetermined time as a checkpoint, the system can implement an effective preventive maintenance strategy. This helps to detect problems before the performance of the drive component may occur, thereby avoiding errors in the detection of filter weight caused by the performance of the drive component and improving the reliability and stability of the equipment.

[0073] Specifically, the performance detection of the drive component includes: using sensors and controllers to monitor the key performance indicators of the motor in real time, such as start-up time, operating speed, current consumption, etc. Then set a threshold within the normal range for each performance indicator. When any item exceeds the preset range, it is regarded as a signal of performance change. Once an abnormality is detected, immediately analyze the possible causes of performance changes, such as temperature fluctuations, humidity effects or other external factors. If it is confirmed that the change is a temporary change caused by external factors, the system can choose not to trigger calibration, but wait for a period of time and then evaluate again. If it is confirmed that the performance change is caused by internal problems of the drive component, such as wear or aging, the calibration procedure is immediately started to regenerate the current and weight mapping table.

[0074] Through measures such as real-time monitoring and early warning, precise setting of thresholds, intelligent analysis of causes, flexible response to changes, timely response to internal problems, improved equipment reliability, reduced maintenance costs, and optimized user experience, the performance monitoring and management level of drive components has been significantly improved, providing a strong guarantee for the stable operation of the equipment.

[0075] The drive unit can be a brushless DC motor (BLDC). This type of motor is widely used and is often used in scenarios that require high efficiency and precise control. By measuring the current output by the motor driver, the load torque of the motor can be indirectly inferred, and then the weight of the load object can be estimated. When the motor runs at a constant speed, the detection current can be used to determine whether there is additional weight, which can achieve extremely accurate weight estimation.

[0076] Stepper motors can also be used as drive components. Stepper motors are generally suitable for applications that do not require high-speed rotation. Their operation relies on pulse feed. Each time a pulse is input, the motor rotates a fixed angle. When the stepper motor tries to move an object, the resistance it encounters can be determined by detecting the drive current, and the weight of the object can be inferred. The advantages of stepper motors are particularly significant for applications that require high-precision position control. At the same time, stepper motors are used in combination with position feedback devices (such as encoders) to provide more accurate position control and angle measurement. Encoders can provide incremental pulse feedback to help determine the exact position of the motor.

[0077] The driver can also be a servo motor. The servo motor integrates a position sensor (such as an encoder) and a closed-loop controller, which can not only effectively control the torque and speed, but also accurately control the position. By detecting the feedback current in the servo motor driver, the external load information that the motor is overcoming can be obtained, thereby indirectly estimating the weight of the object.

[0078] In this embodiment, a current detection device is used to detect the driving current of the driving part. Specifically, a shunt resistor can be used to obtain the driving current by sampling its AD (analog input). More specifically, a precision shunt resistor with a known resistance is connected in series to the power supply line of the stepper motor. The resistor has a low temperature coefficient and a high power capacity to ensure that a stable resistance value can be maintained even under high current conditions; then the two ends of the shunt resistor are connected to a high-resolution analog-to-digital converter (ADC), which is integrated in or connected to the controller and is used to convert the analog voltage signal into a digital signal; then the sampling frequency, resolution and trigger conditions of the ADC are configured, for example, it is set to collect a sample every 100ms, and each sampling is performed at least 10 times to obtain the average current value A3_i; when the motor is running, the ADC continuously monitors and records the voltage drop caused by the current flowing through the shunt resistor, thereby indirectly obtaining the driving current of the motor; then the controller receives data from the ADC, calculates the current average value, and performs filtering and smoothing as needed to reduce the influence of noise; then the measured current average value is associated with the known weight of the standard load, and a current-weight relationship model is established or updated.

[0079] Furthermore, the shunt resistor is made of a material with extremely low thermoelectric potential to avoid additional voltage errors caused by temperature changes and ensure the accuracy of current measurement.

[0080] Furthermore, the ADC has an automatic gain control (AGC) function that can dynamically adjust the input range according to the actual current level, thereby improving the measurement accuracy in low current conditions.

[0081] Specifically, when the system is started or each calibration begins, the initial gain and reference voltage range of the ADC are set;

[0082] The current level is then evaluated by the voltage drop detected by the shunt resistor;

[0083] If the detected current is lower than the preset threshold, the ADC automatically increases the gain to expand the amplification factor of the input signal; conversely, if the current exceeds the safety upper limit, the gain is reduced to prevent overload;

[0084] Then, according to the adjusted gain, the sampling resolution of the ADC is reconfigured to ensure the best digital output accuracy in the entire measurement range;

[0085] As motor operating conditions change, such as load increases or decreases, the ADC continuously monitors and adjusts gain appropriately to maintain optimal measurement performance.

[0086] The sampled data after gain adjustment is then filtered and smoothed to reduce transient fluctuations caused by gain switching.

[0087] When the detected current exceeds the safety upper limit, the ADC can automatically reduce the gain to prevent overload or damage caused by excessive current. This function enhances the safety and reliability of the system. According to the adjusted gain, the ADC can reconfigure the sampling resolution to ensure the best digital output accuracy over the entire measurement range. This helps to reduce quantization errors and improve measurement accuracy.

[0088] In some embodiments, the current detection device further includes a filter circuit for filtering out high-frequency noise in the current signal to improve the stability of current detection.

[0089] Specifically, one or more filter circuits are integrated between the shunt resistor and the ADC. These filter circuits can be passive filters (such as low-pass filters) or active filters. Then, according to the operating frequency of the system and the expected noise spectrum, an appropriate filter cutoff frequency is selected to effectively remove unwanted high-frequency components while retaining useful signals.

[0090] The filtering circuit can significantly reduce high-frequency noise caused by power supply fluctuations, electromagnetic interference (EMI), motor switching actions, etc., thereby improving the signal-to-noise ratio and stability of current measurement. At the same time, some advanced filtering circuits can automatically adjust the filtering parameters according to the noise level monitored in real time to ensure the best filtering effect. In addition, the filtering circuit also plays a protective role to prevent excessive transient voltage from entering the ADC and avoiding damage to sensitive electronic components.

[0091] In this embodiment, the internal machine main control chip is used to process the sensor signal and execute the control algorithm. The stepper motor receives the control signal from the internal machine main control chip to change its own working state.

[0092] Specifically, a PID (proportional-integral-differential) control algorithm is used to determine the control action by comparing the actual motor state with the set angle.

[0093] More specifically, one or more target angles C are set for the stepper motor as the desired final position;

[0094] The actual position of the motor is then continuously monitored using a position feedback device (such as an encoder) and this information is sent to the controller;

[0095] Then, after receiving the position feedback data, the controller calculates the difference between the current actual position and the target angle, i.e., the error signal e(t);

[0096] Then, according to the error signal e(t), the control output u(t) is calculated according to the following formula:

[0097]

[0098] Among them, Kp , K i and K d They are proportional coefficient, integral coefficient and differential coefficient, which can be optimized and adjusted according to experiments or self-tuning methods; e(t) is the deviation between the controlled quantity and the given value;

[0099] Then, based on the calculated control output u(t), the controller sends corresponding control instructions to the stepper motor to adjust the speed and direction of the motor to reduce the error until the target angle is reached;

[0100] Then repeat the above steps throughout the process to ensure that the motor can quickly and stably reach and maintain the set target angle.

[0101] By continuously monitoring the actual position of the motor and comparing it with the target angle, the PID algorithm can calculate an accurate error signal and adjust the control output based on this error signal to ensure that the motor can accurately reach and remain at the set target angle, thereby achieving high-precision control.

[0102] PID control is achieved by calculating the current error (i.e. the difference between the set value and the actual measured value) and adjusting the controller output based on this error, thereby achieving the purpose of regulating the controlled object. The output of the PID controller consists of three parts: proportional term, integral term, and differential term. Specifically, the error at the current moment is calculated in each sampling cycle, and the proportional term KP*error, the integral term KI*error dt (error dt represents the accumulation of all errors from the beginning to the current time), and KD*error / dt (the rate of change of the error) are calculated, and the three terms are added together to control the output. The calculated control output is applied to the motor, usually through a PWM (pulse width modulation) signal to adjust the speed or torque of the motor, thereby driving the motor to move to the target angle.

[0103] In some embodiments, the PID control algorithm also includes an automatic parameter tuning function, which can dynamically adjust the PID parameters during system operation based on historical data or machine learning algorithms to adapt to different working conditions and load changes and optimize response speed and stability.

[0104] In some embodiments, the PID control algorithm is also combined with a feedforward control mechanism. When the system receives a new target angle instruction, it predicts the control output that may be required in advance, thereby speeding up the response and reducing the lag time.

[0105] In some embodiments, obtaining a current and weight mapping table includes:

[0106] Monitor the temperature inside or outside the air conditioner in advance and record the current and weight mapping table at different temperatures;

[0107] Read the current temperature inside or outside the air conditioner;

[0108] Select the corresponding current and weight mapping table according to the current temperature.

[0109] Ambient temperature is one of the important factors that affect the operating efficiency of air conditioners. By reading the current temperature in real time and selecting the corresponding mapping table, the stability of the air conditioning system can be ensured to avoid performance fluctuations caused by changes in ambient temperature. This can significantly reduce the impact of temperature on the detection accuracy of the drive current size, thereby improving the accuracy and stability of detection.

[0110] In this embodiment, a temperature sensor is provided to monitor the temperature inside or outside the air conditioner in real time.

[0111] The temperature sensor may be a digital temperature sensor, an analog temperature sensor or other types of temperature measuring devices, and has sufficient accuracy and response speed to adapt to rapidly changing temperature environments.

[0112] In some embodiments, a standard weight is used as a reference during the calibration process, and multiple measurements are performed at different temperature points of the calibration to improve the reliability of the temperature-current-weight relationship model.

[0113] Specifically, a series of standard loads with known precise weights are prepared, and these loads cover different weight levels within the expected application range;

[0114] Next, determine a number of different ambient temperature test points to ensure that the system's possible operating temperature range is covered, such as from low temperature (such as 0°C) to high temperature (such as 40°C).

[0115] Each standard weight is then installed one by one into the air conditioning system, so that the stepper motor attempts to move to a fixed angle C after each installation;

[0116] Then, at each selected temperature test point, repeat the above loading and measuring process, record the current value Ii (i represents different load conditions) in the motor drive circuit, and calculate the average current value A3_i of multiple samplings;

[0117] Immediately before measuring each temperature point, use a temperature control device (such as a heater or a cooling device) to adjust the ambient temperature to a preset value, and wait for sufficient time for the system to reach thermal equilibrium;

[0118] Next, for each temperature point and each standard weight combination, obtain one or more groups of average current values ​​A3_i under different load conditions;

[0119] Then, based on all the measurement results, a mathematical model or table that comprehensively considers the relationship between temperature, current and weight is constructed to correlate the relationship between the current value and the filter weight under different temperature conditions;

[0120] The accuracy of the constructed model is then evaluated through cross-validation or other statistical methods, and the model parameters are adjusted or more measurement points are added as needed.

[0121] By using standard loads with known precise weights, the weight reference value during the calibration process can be ensured to be accurate, thereby improving the accuracy of the calibration. Standard loads cover different weight levels within the expected application range, ensuring the comprehensiveness and applicability of the calibration. Measurements are made at multiple different ambient temperature test points, covering the temperature range in which the system may operate, which enables the constructed model to more accurately reflect the temperature, current, and weight relationship in the actual working environment. Multiple measurements and calculations of the average current value reduce the error that may be caused by a single measurement and improve the stability and reliability of the data. By evaluating the accuracy of the constructed model through cross-validation or other statistical methods, deviations or deficiencies in the model can be discovered and corrected in a timely manner to ensure the reliability and effectiveness of the model. Adjusting model parameters or adding more measurement points as needed can further optimize model performance and improve the accuracy and reliability of the calibration.

[0122] S104: Determine whether the dust weight is greater than a weight threshold;

[0123] S105: If the dust weight is greater than the weight threshold, remind the user to replace the filter.

[0124] S106: If the dust weight is less than or equal to the weight threshold, the filter is restored to its original state.

[0125] In this embodiment, initialization is performed after each measurement to ensure that the filter is in the same starting position and state, so as to eliminate the influence of external factors and improve the calibration accuracy.

[0126] Since in a closed-loop control system, the current of the driver is not only used to drive the driver, but also used as a feedback signal to control the torque of the driver. Since the torque of the driver is proportional to the current, this means that the detected current can reflect the load borne by the driver. When the driver attempts to overcome an external load (such as lifting an object), the driver controller needs to provide more current to generate sufficient torque. Therefore, this embodiment determines the weight of the filter by monitoring the driving current when the driver drives the air conditioning filter to move to a predetermined angle, thereby determining whether the filter is blocked, and then reminding the user to replace the purification filter. The detection sensitivity and accuracy are high, which significantly reduces the probability of false alarms and improves the accuracy and reliability of the alarm.

[0127] See also Figure 4 This embodiment provides an air conditioning filter purification reminder device 200, including:

[0128] The first current acquisition unit 201 is used to acquire the driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, and obtain a first current;

[0129] The second current acquisition unit 202 is used to acquire the magnitude of the driving current when the filter reaches a predetermined angle when the air conditioner is turned on, and obtain the second current;

[0130] The dust weight acquisition unit 203 is used to acquire a current and weight mapping table, and obtain the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table;

[0131] A judging unit 204 is used to judge whether the dust weight is greater than a weight threshold;

[0132] The reminder unit 205 is used to remind the user to replace the filter if the dust weight is greater than a weight threshold.

[0133] Furthermore, the first current acquisition unit 201 includes:

[0134] A recording subunit, used for recording the magnitude of the driving current when the filter is driven to reach a predetermined angle according to a first predetermined number of times and a first predetermined time interval when the air conditioner is powered on for the first time or a new filter is replaced;

[0135] The first calculation subunit is used to calculate an average value of all recorded driving current magnitudes to obtain a first current.

[0136] Furthermore, the second current acquisition unit 202 includes:

[0137] An interval acquisition subunit is used to acquire, according to a second predetermined number of times and a second predetermined time interval, a driving current magnitude when the filter reaches a predetermined angle when the air conditioner is turned on next time;

[0138] The second calculation subunit is used to calculate the average value of all acquired driving current magnitudes to obtain a second current.

[0139] Further, the current and weight mapping table is obtained as follows:

[0140] Obtain the driving current magnitude when loads of different weights reach a predetermined angle;

[0141] The weight difference of loads of different weights and the corresponding current difference are calculated to generate a current and weight mapping table.

[0142] Further, the dust weight acquisition unit 203 includes:

[0143] A mapping table acquisition subunit, used to acquire a current and weight mapping table;

[0144] a current difference calculation subunit, configured to calculate a current difference between the second current and the first current;

[0145] The matching subunit is used to match the current difference with the current and weight mapping table to obtain a corresponding weight difference as the dust weight.

[0146] Furthermore, it also includes:

[0147] A running time acquisition unit, used to acquire the running time of a driving member driving the filter screen;

[0148] A running time determination unit, used for determining whether the running time reaches a third predetermined time;

[0149] a performance detection unit, configured to detect the performance of the driving member if the running time reaches a third predetermined time;

[0150] an ending unit, configured to end the operation if the performance of the driving member reaches a predetermined performance;

[0151] a calibration unit, configured to recalibrate and generate a current and weight mapping table if the performance of the driving member does not reach a predetermined performance;

[0152] The continuing acquisition unit is used for continuing to acquire the operating time of the driving member if the operating time does not reach a third predetermined time.

[0153] Furthermore, the dust weight acquisition unit 203 further includes:

[0154] A monitoring subunit is used to monitor the temperature of the air conditioner inside or outside the environment in advance and record the current and weight mapping table at different temperatures;

[0155] The reading subunit is used to read the current temperature inside or outside the air conditioner;

[0156] The selection subunit is used to select the corresponding current and weight mapping table according to the current temperature.

[0157] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-mentioned devices and units can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0158] The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed, the method provided in the above embodiment can be implemented. The storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0159] The present invention also provides an air conditioner, which may include a memory and a processor, wherein the memory stores a computer program, and when the processor calls the computer program in the memory, the method provided in the above embodiment may be implemented. Of course, the computer device may also include various network interfaces, power supplies and other components.

[0160] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0161] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive.

[0162] Inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An air conditioner filter purification reminder method, characterized in that: include: Obtaining a driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, to obtain a first current; Obtaining the magnitude of a driving current when the filter reaches a predetermined angle when the air conditioner is turned on, and driving the filter to reach a predetermined angle, to obtain a second current; Acquire a current and weight mapping table, and obtain the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table; Determining whether the dust weight is greater than a weight threshold; If the dust weight is greater than the weight threshold, the user is reminded to replace the filter.

2. The air conditioning filter purification reminder method according to claim 1, characterized in that: The step of obtaining the driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, and obtaining the first current comprises: When the air conditioner is powered on for the first time or a new filter is replaced, the driving current magnitude when the filter reaches a predetermined angle is recorded according to a first predetermined number of times and a first predetermined time interval; The average value of all recorded driving current magnitudes is calculated to obtain the first current.

3. The air conditioning filter purification reminder method according to claim 1, characterized in that: The step of obtaining the driving current magnitude when the filter reaches a predetermined angle when the air conditioner is turned on, and obtaining the second current comprises: According to the second predetermined number of times and the second predetermined time interval, the magnitude of the driving current when the filter reaches the predetermined angle when the air conditioner is turned on next time is obtained; The average value of all acquired driving current magnitudes is calculated to obtain the second current.

4. The air conditioner filter purification reminder method according to claim 1, characterized in that: The current and weight mapping table is obtained as follows: Obtain the driving current magnitude when loads of different weights reach a predetermined angle; The weight difference of loads of different weights and the corresponding current difference are calculated to generate a current and weight mapping table.

5. The air conditioning filter purification reminder method according to claim 1, characterized in that: The step of obtaining the current and weight mapping table, and obtaining the dust weight according to the current relationship between the second current and the first current and the current and weight mapping table, comprises: Get the current and weight mapping table; calculating a current difference between the second current and the first current; The current difference is matched with the current and weight mapping table to obtain a corresponding weight difference, which is used as the dust weight.

6. The air conditioner filter purification reminder method according to claim 1, characterized in that: Also includes: Acquiring the running time of a driving member driving the filter screen; determining whether the running time reaches a third predetermined time; If the running time reaches a third predetermined time, testing the performance of the driving member; If the performance of the driving member reaches a predetermined performance, the operation is terminated; If the performance of the driving member does not reach the predetermined performance, recalibration is performed to generate a current and weight mapping table; If the running time does not reach the third predetermined time, the running time of the driving member continues to be acquired.

7. The air conditioner filter purification reminder method according to claim 1, characterized in that: The step of obtaining the current and weight mapping table includes: Monitor the temperature inside or outside the air conditioner in advance and record the current and weight mapping table at different temperatures; Read the current temperature inside or outside the air conditioner; Select the corresponding current and weight mapping table according to the current temperature.

8. An air conditioning filter purification reminder device, characterized in that: include: A first current acquisition unit is used to acquire a driving current magnitude when the air conditioner is powered on for the first time or when the filter is driven to reach a predetermined angle after a new filter is replaced, so as to obtain a first current; A second current acquisition unit is used to acquire the magnitude of a driving current when the filter reaches a predetermined angle when the air conditioner is turned on, and obtain a second current; a dust weight acquisition unit, configured to acquire a current and weight mapping table, and obtain the dust weight according to a current relationship between the second current and the first current and the current and weight mapping table; A judging unit, used for judging whether the dust weight is greater than a weight threshold; The reminder unit is used to remind the user to replace the filter if the dust weight is greater than a weight threshold.

9. An air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the air conditioning filter purification reminder method as described in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor executes the air conditioning filter purification reminder method as described in any one of claims 1 to 7.

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