Fault detection method and device of oxygen generating device, air conditioning equipment and medium

Abstract

The application discloses a fault detection method and device of an oxygen generating device, air conditioning equipment and a medium. The method comprises the following steps: acquiring the current effective value of an oxygen generating motor, determining the current change condition of the oxygen generating motor according to the current effective value, and determining the fault type of the oxygen generating device according to the current change condition. The fault condition of the oxygen generating device can be found in time according to the current change condition, and then the fault detection type of the oxygen generating device can be identified, so that the use experience of a user is improved, and the automation level of fault detection is improved.

Description

Technical Field

[0001] This invention relates to the field of fault detection technology, and in particular to a fault detection method, device, air conditioning equipment and medium for an oxygen generator. Background Technology

[0002] As comfort levels in air conditioning equipment increase, there are more and more ways to add oxygen generation functions to these devices. Common oxygen generators are susceptible to damage during use due to variations in air quality, temperature, and humidity; for example, they tend to break down after 3 to 5 years of use.

[0003] However, the relevant technology has the problem of not being able to detect damage or malfunctions of the oxygen generator, which makes it impossible to know whether the oxygen generator is faulty, affecting the product quality of the oxygen generator and causing a poor user experience. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a fault detection method for an oxygen generator, which can detect faults in the oxygen generator and identify the fault detection type, thereby improving the user experience and enhancing the automation level of fault detection.

[0005] A second objective of this invention is to provide a computer-readable storage medium.

[0006] The third objective of this invention is to provide an oxygen generating device.

[0007] The fourth objective of this invention is to provide another oxygen generating device.

[0008] The fifth objective of this invention is to provide an air conditioning device.

[0009] To achieve the above objectives, a first aspect of the present invention provides a fault detection method for an oxygen generating device. The oxygen generating device includes an oxygen generating motor and an oxygen generating membrane. The oxygen generating motor drives airflow toward the oxygen generating membrane to generate oxygen through the membrane. The method includes: acquiring the effective value of the current of the oxygen generating motor; determining the current change of the oxygen generating motor based on the effective value of the current; and determining the fault type of the oxygen generating device based on the current change.

[0010] The fault detection method for an oxygen generator according to embodiments of the present invention can promptly detect faults in the oxygen generator based on changes in current, thereby determining the type of fault. This provides a more detailed understanding of the oxygen generator's status, facilitating targeted maintenance, improving the user experience, and enhancing the automation level of fault detection.

[0011] In some embodiments of the present invention, before obtaining the effective value of the current of the oxygen generator, the method further includes: controlling the operation of the oxygen generator and continuously setting a duration.

[0012] In some embodiments of the present invention, determining the current change of the oxygen generator based on the effective current value includes: calculating the average value of the acquired effective current value at preset intervals, and determining the current change of the oxygen generator based on the average value calculation result.

[0013] In some embodiments of the present invention, determining the current change of the oxygen generator based on the average value calculation result includes: determining the current change rate of the oxygen generator based on the average value calculation result of two consecutive times.

[0014] In some embodiments of the present invention, the oxygen generating device includes a connecting pipe, the two ends of which are respectively connected to the permeation side of the oxygen generating membrane and the oxygen input end of the oxygen generating motor. Furthermore, the fault type of the oxygen generating device is determined based on the current change, including: if the current change rate is greater than a first preset threshold, it is determined that the connecting pipe of the oxygen generating device has a blockage fault, wherein the first preset threshold is a positive value.

[0015] In some embodiments of the present invention, determining the fault type of the oxygen generating device based on the current change includes: if the current change rate is less than a second preset threshold, then determining that the oxygen generating device has suffered oxygen membrane damage, wherein the second preset threshold is a negative value.

[0016] In some embodiments of the present invention, after averaging the acquired effective current values ​​at preset time intervals, the method further includes: determining the aging degree of the oxygen generating device based on the average value calculation result, the preset optimal effective current value of the oxygen generating membrane, and the preset worst effective current value of the oxygen generating membrane.

[0017] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium storing a fault detection program for an oxygen generator, which, when executed by a processor, implements the fault detection method for an oxygen generator as described in any of the above embodiments.

[0018] According to the computer-readable storage medium of the present invention, faults in the oxygen generator can be detected in a timely manner based on changes in current, thereby determining the type of fault in the oxygen generator. This provides a more detailed understanding of the status of the oxygen generator, facilitates targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0019] To achieve the above objectives, a third aspect of the present invention provides an oxygen generating device, which includes a memory and a processor. The memory stores a computer program, characterized in that the processor, when executing the computer program, implements the fault detection method of the oxygen generating device described in any of the above embodiments.

[0020] According to the oxygen generator of the present invention, the fault condition of the oxygen generator can be detected in a timely manner based on the change of current, and the fault type of the oxygen generator can be determined. This allows for a more detailed understanding of the status of the oxygen generator, which is conducive to subsequent targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0021] To achieve the above objectives, a fourth aspect of the present invention provides an oxygen generating device, which includes an oxygen generating motor, an oxygen generating membrane, a current detection circuit, and a controller. The oxygen generating motor drives airflow toward the oxygen generating membrane to generate oxygen through the membrane. The current detection circuit detects the operating current of the oxygen generating motor. The controller obtains the effective value of the current of the oxygen generating motor based on the operating current, determines the current change of the oxygen generating motor based on the effective current value, and determines the fault type of the oxygen generating device based on the current change.

[0022] According to the oxygen generator of the present invention, the fault condition of the oxygen generator can be detected in a timely manner based on the change of current, and the fault type of the oxygen generator can be determined. This allows for a more detailed understanding of the status of the oxygen generator, which is conducive to subsequent targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0023] To achieve the above objectives, a fifth aspect of the present invention provides an air conditioning device, which includes an oxygen generating device according to the above embodiments.

[0024] According to the air conditioning equipment of the present invention, the fault condition of the oxygen generating device can be detected in a timely manner based on the change of current, thereby determining the fault type of the oxygen generating device, so as to have a more detailed understanding of the status of the oxygen generating device, which is conducive to subsequent targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a flowchart illustrating a fault detection method for an oxygen generating device according to an embodiment of the present invention;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of an oxygen generator motor according to an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 A schematic diagram of the oxygen flow direction in the oxygen generator;

[0030] Figure 4 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0031] Figure 5 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0032] Figure 6 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0033] Figure 7 This is a waveform diagram of the operating current of an oxygen generator motor according to an embodiment of the present invention;

[0034] Figure 8 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram showing the change in current when the connection of an oxygen generating device according to an embodiment of the present invention is blocked;

[0036] Figure 10 This is a schematic diagram of the connection relationship of an oxygen generating device according to an embodiment of the present invention;

[0037] Figure 11 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram showing the change in current when the oxygen generating membrane of an oxygen generating device according to an embodiment of the present invention is damaged;

[0039] Figure 13 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0040] Figure 14 This is a flowchart illustrating a fault detection method for an oxygen generating device according to another embodiment of the present invention;

[0041] Figure 15 This is a structural block diagram of an oxygen generating device according to another embodiment of the present invention;

[0042] Figure 16 This is a structural block diagram of an oxygen generating device according to another embodiment of the present invention;

[0043] Figure 17 This is a circuit connection diagram of the oxygen generator motor of an oxygen generator device according to an embodiment of the present invention;

[0044] Figure 18 This is a structural block diagram of an air conditioning device according to another embodiment of the present invention. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] The following describes in detail, with reference to the accompanying drawings, the fault detection method, apparatus, air conditioning equipment, and medium of the oxygen generating device according to embodiments of the present invention.

[0047] Figure 1 This is a flowchart illustrating a fault detection method for an oxygen generating device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the fault detection method of the oxygen generating device in this embodiment of the invention includes the following steps S11, S13 and S15.

[0048] S11: Obtain the effective value of the current of the oxygen generator motor.

[0049] S13: Determine the current variation of the oxygen generator motor based on the effective value of the current.

[0050] S15: Determine the fault type of the oxygen generator based on the current change.

[0051] The fault detection method for an oxygen generator according to embodiments of the present invention can promptly detect faults in the oxygen generator based on changes in current, thereby determining the type of fault. This provides a more detailed understanding of the oxygen generator's status, facilitating targeted maintenance, improving the user experience, and enhancing the automation level of fault detection.

[0052] An oxygen generator consists of an oxygen generator motor and an oxygen-generating membrane. The motor drives airflow towards the membrane to generate oxygen. The working principle is roughly as follows: when the motor is turned on, it provides energy to the membrane to compress the air, creating a negative pressure on the permeate side. This negative pressure draws air from the permeate side of the membrane, forcing it through. The membrane generates oxygen based on the differences in the solubility and diffusion properties of different gas molecules. When airflow passes through the membrane under the pressure difference generated by the motor, oxygen molecules preferentially pass through compared to nitrogen molecules, resulting in oxygen concentration on the permeate side, thus achieving oxygen generation.

[0053] The oxygen generating membrane and other components are the load of the oxygen generating motor. The current of the oxygen generating motor is positively correlated with the load. Therefore, the change in the current of the oxygen generating motor can be used to determine the change in the load, thereby knowing the state of the load.

[0054] Please combine Figure 2 and Figure 3 The three-dimensional structural diagram of the oxygen generator is shown below. Figure 2 As shown in the diagram, the oxygen flow direction of the oxygen generator is as follows: Figure 3 As shown, the oxygen generator has an air inlet and an air outlet. The air inlet is connected to the permeate side of the oxygen-generating membrane, allowing the generated negative pressure to act on the permeate side of the membrane and directing the enriched oxygen towards the generator. The air outlet is used to discharge the oxygen enriched on the permeate side of the membrane. Specifically, the oxygen generator can be a brushless motor, and the oxygen-generating membrane can be a selective permeation membrane.

[0055] The effective value of current refers to the amount of heat generated when a DC current and an AC current are passed through a resistor of the same resistance within the same time interval. The DC current is considered the effective value of the AC current. The effective value of the current from the oxygen generator is used as a basis for judging current changes. Current changes refer to the variation of the effective current value over different time periods.

[0056] Understandably, using the effective value of the current allows for accurate determination of the current variation in the oxygen generator motor, avoiding the problem of difficulty in measuring and calculating the current during the operation of the oxygen generator due to the constant dynamic changes in AC voltage. The current variation of the oxygen generator motor can be determined based on the amount of current change or the rate of change of current.

[0057] Because the current of the oxygen generator motor changes accordingly when certain faults occur in the oxygen generator, different current changes correspond to different faults in the oxygen generator, such as a fault in a certain load. Specifically, the types of faults in the oxygen generator may include, but are not limited to, blockage of connecting pipes, damage to the oxygen generating membrane, and aging of the oxygen generator.

[0058] Please combine Figure 4 In some embodiments of the present invention, before performing step S11, the fault detection method for the oxygen generating device may further include:

[0059] S17: Controls the operation of the oxygen generator and continuously sets the duration.

[0060] Therefore, after the oxygen generator is turned on, it is first run for a set time to allow the effective value of the current to stabilize before the effective value of the current of the oxygen generator motor is obtained. This makes the obtained effective value of the current more accurate.

[0061] Specifically, the set duration can be 30 minutes or other values, which are not limited here. It can be understood that when the oxygen generator is operating normally for 30 minutes, the oxygen generation system generally will not experience malfunctions, and the effective value of the current will generally not change abruptly.

[0062] Please combine Figure 5 In some embodiments of the present invention, step S13 may include:

[0063] S131: Calculate the average value of the acquired current at preset intervals, and determine the current change of the oxygen generator motor based on the average value calculation result.

[0064] The preset time is typically set to be longer than the time period for acquiring the effective current value. This ensures that one or more effective current values ​​are acquired within each preset time period, so that one or more effective current values ​​are included in the average value calculation each time. In this way, by averaging the acquired effective current values ​​at preset time intervals and determining the current variation of the oxygen generator based on the average value calculation results, the current variation of the oxygen generator can be determined more accurately.

[0065] Specifically, the preset time can be 5 minutes or other values, which are not limited here. In some embodiments, starting from 16:00, the average value of the acquired current effective value is calculated at 16:05 after a 5-minute interval, to obtain the average value of the current effective value, which is the current average value Avg1. Then, the acquisition of current effective values ​​continues until 16:10, and then the next current average value Avg2 is obtained. The current average value Avg1 can be compared with the current average value Avg2 of the next 5 minutes (i.e., 16:10) to obtain the current change.

[0066] Please combine Figure 6 In some embodiments of the present invention, the determination of the current change of the oxygen generator motor based on the average value calculation result in step S131 can specifically be: determining the current change rate of the oxygen generator motor based on the average value calculation result of two adjacent times.

[0067] In this way, by comparing the average values ​​of two consecutive calculations, the current change rate of the oxygen generator can be determined, laying the foundation for subsequent determination of the fault type of the oxygen generator.

[0068] Specifically, the rate of change of current in the oxygen generator can be understood as the ratio of the changes between the average current values ​​of the oxygen generator. In some embodiments, the average values ​​of two adjacent measurements are calculated as the average current value Avg1 of 16:05 and the average current value Avg2 of 16:10, respectively. The rate of change of current in the oxygen generator is the ratio of the difference between Avg1 and Avg2 to Avg1.

[0069] Alternatively, the change in current can be used instead of the rate of change in current to characterize the change in current.

[0070] It should be noted that the effective value of the current can be continuously acquired and the current change can be continuously determined. Each time the next current change is determined, the fault type of the oxygen generator is judged.

[0071] In one example, such as Figure 7 As shown, the oxygen generator's operating current is a three-phase alternating current, where U, V, and W are different phases. When the oxygen generator is functioning correctly, the maximum amplitude of the current in each phase is A, and the operating current waveform is sinusoidal. The phase difference between the three-phase alternating current phases is 120°. If the effective value of the current changes significantly due to a fault in the oxygen generator, the operating current waveform of the oxygen generator will generally remain sinusoidal, but the amplitude will significantly increase or decrease due to the fault.

[0072] Please combine Figure 8 In some embodiments of the present invention, the oxygen generating device includes a connecting pipe, the two ends of which are respectively connected to the permeation side of the oxygen generating membrane and the oxygen input end of the oxygen generating motor, and step S15 includes:

[0073] S21: If the rate of change of current is greater than the first preset threshold, it is determined that the connecting pipe of the oxygen generator is blocked, wherein the first preset threshold is a positive value.

[0074] Thus, by comparing the current change rate with the first preset threshold, it is possible to accurately determine whether the connecting pipe of the oxygen generator is blocked.

[0075] It is understandable that if the connecting pipe between the oxygen generator motor and the oxygen generating membrane is blocked, the pressure of the oxygen generator motor will increase, which will lead to an increase in the load of the oxygen generator motor in a short period of time, resulting in an increase in the effective value of the current and a significant change in the rate of change of the current.

[0076] The first preset threshold is a pre-calibrated rate of change value greater than zero. Assuming that the effective value of the working current of the oxygen generator motor when the oxygen generator is running normally is I1, and the effective value of the working current of the oxygen generator motor after the connecting pipe is blocked is I2, I2>I1, the rate of change of the current is (I2-I1) / I1, then the preset threshold can be set to a rate of change value slightly lower than (|I2-I1|) / I1, so that the first preset threshold can accurately determine all connecting pipe blockage faults.

[0077] In one example, when the connecting pipe of the oxygen generator experiences a blockage fault, the rate of current change is as follows: Figure 9 As shown, T1 is the duration of the oxygen generator's operation and normal oxygen production, and R1 is a pre-defined first preset threshold. This first preset threshold is used to determine whether the oxygen generator has experienced a connection pipe blockage fault. During the T1 period, the current change rate is approximately zero, indicating that the current change rate has not changed significantly and has not reached the threshold R1, therefore no fault has occurred. T2 is the duration of the oxygen generator malfunction. When the oxygen generator is operating normally until time t1, the average current before time t1 is less than the average current after time t1. Therefore, the current change rate at time t1 increases to R2, and the change rate R2 exceeds the threshold R1. Thus, it is determined that the oxygen generator's connection pipe has experienced a connection pipe blockage fault starting from time t1.

[0078] In another example, such as Figure 10 As shown, the oxygen generating device 200 includes an oxygen generating motor M, an oxygen generating membrane 202, an oxygen enrichment pipe 203, and a connecting pipe 204. The two ends of the connecting pipe 204 are connected to the permeation side Y of the oxygen generating membrane 202 and the oxygen input end X of the oxygen generating motor M, respectively. The oxygen generating motor M is downstream of the gas path and drives the air flow to the oxygen generating membrane 202 by suction.

[0079] Please combine Figure 11 In some embodiments of the present invention, step S15 includes:

[0080] S23: If the rate of change of current is less than the second preset threshold, it is determined that the oxygen generating device has suffered a membrane damage fault, wherein the second preset threshold is a negative value.

[0081] Thus, by comparing the current change rate with the second preset threshold, it is possible to accurately determine whether the oxygen generating membrane of the oxygen generating device has been damaged.

[0082] It is understandable that if the oxygen generating device experiences a malfunction in the oxygen generating membrane, the pressure of the oxygen generating motor will decrease, which in turn will lead to a reduction in the load on the oxygen generating motor in a short period of time, resulting in a decrease in the effective value of the current and a change in the rate of change of the current.

[0083] The second preset threshold is a pre-calibrated rate-of-change value less than zero. Assuming that the effective working current of the oxygen generation motor of the oxygen generator during normal operation is I3, and the effective working current of the oxygen generation motor after the oxygen generation membrane is damaged is I4, I4<I3, then the current change rate at this time is (I3-I4) / I3. The preset threshold can be set as a rate-of-change value slightly lower than (I4-I3) / I3, so that the second preset threshold can accurately determine all oxygen generation membrane damage faults.

[0084] In one example, the current change rate when the oxygen generation membrane of the oxygen generator has a blockage fault is as Figure 12 shown, wherein T3 is the duration for the oxygen generator to start and normally operate for oxygen generation, and R3 is the pre-calibrated second preset threshold. The second preset threshold is used to determine whether an oxygen generation membrane damage fault occurs in the oxygen generator. During the time period T3, the current change rate is approximately zero, indicating that the current change rate has not changed greatly at this time and is not lower than the threshold R3, so no fault occurs; T4 is the duration of the fault of the oxygen generator. When the oxygen generator operates normally until time t3, the average current before time t3 is smaller than the average current after time t3, so the current change rate at time t3 decreases to R4 (R4<0), and the change rate R4 is lower than the threshold R3, therefore it is determined that an oxygen generation membrane damage fault occurs to the connecting pipe of the oxygen generator starting from time t3.

[0085] Please refer to Figure 13 , in some embodiments of the present invention, after step S131, the fault detection method for an oxygen generator further comprises:

[0086] S19: determining the aging degree of the oxygen generator according to the average value calculation result in step S131, the preset optimal effective current value of the oxygen generation membrane and the preset worst effective current value of the oxygen generation membrane.

[0087] In this way, by determining the aging degree of the oxygen generator, the situation that the oxygen generator cannot provide the oxygen generation function due to aging can be found in time, which improves the user experience.

[0088] Specifically, the preset optimal effective current value of the oxygen generation membrane can be understood as the effective current value of the oxygen generation membrane when the oxygen generator is in a brand-new state. The preset worst effective current value of the oxygen generation membrane can be understood as the effective current value when the oxygen generation membrane is at the maximum aging degree in the early experimental test.

[0089] It is understandable that if the oxygen generator ages, the pressure of the oxygen generator motor will gradually increase. When the pressure of the oxygen generator motor increases to a certain level, the oxygen generator will age to the point where the oxygen generation effect is very poor. The aging degree of the oxygen generator includes, but is not limited to, aging of the oxygen generating membrane, motor, pipeline, and deterioration of the quality of the produced oxygen. In some embodiments, the aging degree can be expressed as a percentage. The lower the percentage value, the higher the aging degree. The aging degree of the oxygen generator can be obtained according to formula (1). When judging the aging degree of the oxygen generator, the average value can be calculated by averaging the effective current value when the user thinks that the aging degree of the oxygen generator needs to be detected, or by automatically averaging the effective current value of the oxygen generator every 5 days. It should be noted that the time parameter for automatically detecting the aging degree of the oxygen generator can also be other values, which are not limited here.

[0090]

[0091] Where I is the current average current, I new The preset optimal effective current value for the oxygen generating membrane, that is, the effective current value of the oxygen generating membrane when it is first used (i.e., in a brand new state), I age The preset worst current effective value of the oxygen generating membrane, also known as the maximum aging current, is the effective current value when the oxygen generating device is in the extreme aging fault state.

[0092] Please combine Figure 14 The following will describe the fault detection method of the oxygen generating device of the present invention with a specific embodiment.

[0093] S31: Control the oxygen generator to start running, and start acquiring the effective value of the current after running continuously for 30 minutes.

[0094] S32: Calculate the average value of the acquired current every 5 minutes.

[0095] S33: Determine the current change rate of the oxygen generator based on the average value of two consecutive calculations.

[0096] S34: Determine whether the rate of change of current is greater than the first preset threshold. If yes, proceed to step S35; otherwise, proceed to step S36.

[0097] S35: If the connecting pipe of the oxygen generator is found to be blocked, this method ends.

[0098] S36: Determine whether the rate of change of current is less than the second preset threshold. If yes, proceed to step S37; otherwise, proceed to step S38.

[0099] S37: If the oxygen generator is determined to have suffered a membrane damage fault, this method ends.

[0100] S38: When the user deems it necessary to test the aging level of the oxygen generator, the average value of the effective current is calculated, or the average value of the effective current of the oxygen generator is automatically calculated every 5 days.

[0101] S39: Determine the aging degree of the oxygen generating device according to formula (1), and this method ends.

[0102] It should be noted that the specific values ​​mentioned above are only for illustrating the implementation of the present invention in detail, and should not be construed as limiting the present invention. In other examples, implementation methods, or embodiments, other values ​​may be selected according to the present invention, and no specific limitations are made here.

[0103] To implement the above embodiments, this invention also proposes a computer-readable storage medium storing a fault detection program for an oxygen generator. When the fault detection program for the oxygen generator is executed by a processor, it implements the fault detection method for the oxygen generator of any of the above embodiments.

[0104] According to the computer-readable storage medium of the present invention, faults in the oxygen generator can be detected in a timely manner based on changes in current, thereby determining the type of fault in the oxygen generator. This provides a more detailed understanding of the status of the oxygen generator, facilitates targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0105] For example, when the fault detection program for the oxygen generator is executed by the processor, steps S11, S13, and S15 of the following fault detection method for the oxygen generator are implemented.

[0106] S11: Obtain the effective value of the current of the oxygen generator motor.

[0107] S13: Determine the current variation of the oxygen generator motor based on the effective value of the current.

[0108] S15: Determine the fault type of the oxygen generator based on the current change.

[0109] It should be noted that the above explanation of the embodiments and beneficial effects of the fault detection method for oxygen generating devices is also applicable to the computer-readable storage medium of the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0110] To achieve the above embodiments, this invention also proposes an oxygen generating device. Figure 15 This is a structural block diagram of an oxygen generating device according to an embodiment of the present invention. Figure 15As shown, the oxygen generating device 100 includes a memory 102 and a processor 104. The memory 102 stores a computer program 106. When the processor 104 executes the computer program 106, it implements the fault detection method of the oxygen generating device in any of the above embodiments.

[0111] The oxygen generator 100 according to the present invention can promptly detect faults in the oxygen generator based on changes in current, thereby determining the type of fault. This provides a more detailed understanding of the oxygen generator's status, facilitates targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0112] For example, when the fault detection program 106 of the oxygen generator 100 is executed by the processor 104, steps S11, S13 and S15 of the fault detection method of the oxygen generator 100 are implemented.

[0113] S11: Obtain the effective value of the current of the oxygen generator motor.

[0114] S13: Determine the current variation of the oxygen generator motor based on the effective value of the current.

[0115] S15: Determine the fault type of the oxygen generator based on the current change.

[0116] It should be noted that the above explanation of the embodiments and beneficial effects of the fault detection method for the oxygen generating device also applies to the oxygen generating device 100 of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0117] To achieve the above embodiments, this invention also proposes an oxygen generating device. Figure 16 This is a structural block diagram of an oxygen generating device according to an embodiment of the present invention. Figure 17 The circuit connection of the oxygen generator M is shown. The oxygen generator M is connected to the inverter 401. The inverter 410 is connected to a current detection circuit 402, which includes three sampling resistors. In this embodiment, a three-resistor sampling method is used to sample the operating current. Figure 16As shown, the oxygen generator 300 includes an oxygen generator motor 302, an oxygen-generating membrane 304, a current detection circuit 306, and a controller 308. The oxygen generator motor 302 drives airflow towards the oxygen-generating membrane 304 to generate oxygen. The current detection circuit 306 detects the operating current of the oxygen generator motor. The current detection circuit 306 includes three sampling resistors, one end of which is connected to each other, and the other end of each resistor is connected to one end of a bidirectional switch. The operating current is obtained through the sampling resistors. The controller 308 obtains the effective value of the oxygen generator motor current based on the operating current, determines the current change of the oxygen generator motor based on the effective current value, and determines the fault type of the oxygen generator based on the current change. The operating current detected by the current detection circuit 306 can be an instantaneous value; the controller 308 obtains the corresponding effective current value by integrating the instantaneous value.

[0118] The oxygen generator 300 according to embodiments of the present invention can promptly detect faults in the oxygen generator based on changes in current, thereby determining the type of fault. This provides a more detailed understanding of the oxygen generator's status, facilitating targeted maintenance, improving the user experience, and enhancing the automation level of fault detection. The oxygen generator is characterized by its ease of operation, safety, reliability, small footprint, light weight, and convenient installation. Furthermore, it produces no secondary pollution during use, making it energy-efficient and environmentally friendly.

[0119] In some embodiments of the present invention, before obtaining the effective value of the current of the oxygen generator motor 302, the oxygen generator motor 302 is also used to: control the operation of the oxygen generator and continuously set the duration.

[0120] In some embodiments of the present invention, the controller 308 is further configured to: calculate the average value of the acquired effective current value at preset intervals, and determine the current change of the oxygen generator motor based on the average value calculation result.

[0121] In some embodiments of the present invention, the current change of the oxygen generator is determined based on the average value calculation result, and the controller 306 is further configured to: determine the current change rate of the oxygen generator based on the average value calculation result of two adjacent times.

[0122] In some embodiments of the present invention, the oxygen generating device includes a connecting pipe, the two ends of which are respectively connected to the permeation side of the oxygen generating membrane and the oxygen input end of the oxygen generating motor. The controller 308 is further configured to: determine that the connecting pipe of the oxygen generating device has a blockage fault if the current change rate is greater than a first preset threshold, wherein the first preset threshold is a positive value.

[0123] In some embodiments of the present invention, the controller 308 is further configured to: determine that the oxygen generating device has suffered oxygen membrane damage if the rate of change of current is less than a second preset threshold, wherein the second preset threshold is a negative value.

[0124] In some embodiments of the present invention, after averaging the acquired effective current values ​​at preset intervals, the controller 308 is further configured to: determine the aging degree of the oxygen generating device based on the average value calculation result, the preset optimal effective current value of the oxygen generating membrane, and the preset worst effective current value of the oxygen generating membrane.

[0125] It should be noted that the above explanation of the embodiments and beneficial effects of the fault detection method for the oxygen generating device also applies to the oxygen generating device 300 of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0126] To achieve the above embodiments, this invention also proposes an air conditioning device. Figure 18 This is a structural block diagram of an air conditioning device according to an embodiment of the present invention, as shown below. Figure 18 As shown, the air conditioning equipment 500 includes an oxygen generating device 501 according to the above embodiment.

[0127] According to the air conditioning equipment of the present invention, the fault condition of the oxygen generating device can be detected in a timely manner based on the change of current, thereby determining the fault type of the oxygen generating device, so as to have a more detailed understanding of the status of the oxygen generating device, which is conducive to subsequent targeted maintenance, improves the user experience, and enhances the automation level of fault detection.

[0128] It should be noted that the above explanation of the embodiments and beneficial effects of the fault detection method for the oxygen generating device also applies to the air conditioning equipment of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0129] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0130] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0131] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0132] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0133] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0134] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for fault detection in an oxygen generating device, characterized in that, The oxygen generating device includes an oxygen generating motor and an oxygen generating membrane. The oxygen generating motor drives airflow toward the oxygen generating membrane to generate oxygen through the membrane. The method includes: Obtain the effective value of the current of the oxygen generator motor; The current variation of the oxygen generator is determined based on the effective value of the current. The fault type of the oxygen generating device is determined based on the changes in current. Determining the current variation of the oxygen generator motor based on the effective value of the current includes: The average value of the acquired current is calculated at preset time intervals, and the current change of the oxygen generator is determined based on the average value calculation result. The aging degree of the oxygen generating device is determined based on the average value calculation results, the preset optimal current effective value of the oxygen generating membrane, and the preset worst current effective value of the oxygen generating membrane.

2. The method according to claim 1, characterized in that, Before obtaining the effective value of the current of the oxygen generator, the method further includes: Control the operation of the oxygen generating device and continuously set the duration.

3. The method according to claim 1, characterized in that, The current variation of the oxygen generator is determined based on the average value calculation results, including: The current change rate of the oxygen generator is determined based on the average value of two consecutive calculations.

4. The method according to claim 3, characterized in that, The oxygen generating device includes a connecting pipe, the two ends of which are respectively connected to the permeation side of the oxygen generating membrane and the oxygen input terminal of the oxygen generating motor. Furthermore, the fault type of the oxygen generating device is determined based on the current change, including: If the rate of change of current is greater than a first preset threshold, it is determined that the connecting pipe of the oxygen generator is blocked, wherein the first preset threshold is a positive value.

5. The method according to claim 3 or 4, characterized in that, The fault type of the oxygen generating device is determined based on the current change, including: If the rate of change of current is less than a second preset threshold, it is determined that the oxygen generating device has suffered a membrane damage fault, wherein the second preset threshold is a negative value.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a fault detection program for an oxygen generator, which, when executed by a processor, implements the fault detection method for an oxygen generator as described in any one of claims 1-5.

7. An oxygen generating device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the fault detection method for the oxygen generating device according to any one of claims 1-5.

8. An oxygen generating device, characterized in that, The oxygen generating device is used to execute the fault detection method of the oxygen generating device according to any one of claims 1-5, and includes an oxygen generating motor, an oxygen generating membrane, a current detection circuit, and a controller. The oxygen generating motor is used to drive airflow to the oxygen generating membrane to generate oxygen through the oxygen generating membrane. The current detection circuit is used to detect the operating current of the oxygen generating motor. The controller is used to obtain the effective value of the current of the oxygen generating motor based on the operating current, determine the current change of the oxygen generating motor based on the effective value of the current, and determine the fault type of the oxygen generating device based on the current change.

9. An air conditioning device, characterized in that, include: The oxygen generating device according to claim 8.

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