Health status monitoring method, UPS device and computer-readable storage medium

Abstract

The present invention provides a health status monitoring method, a UPS device, and a computer-readable storage medium. The method comprises: detecting a noise level generated by a UPS device and obtaining a load parameter of the UPS device; generating a correction factor based on the load parameter, and using the noise level and correction factor to generate a first health status index; and outputting an alarm signal when the first health status index exceeds a first preset value range. By measuring the noise generated during UPS operation to determine the operating status of the UPS, the present invention can identify potential problems during UPS operation in advance, thereby preventing these problems from occurring and preventing losses.

Description

Technical Field

[0001] The present invention relates to the field of uninterruptible power supplies, and more particularly to a health status monitoring method, a UPS device, and a computer-readable storage medium. Background Art

[0002] An uninterruptible power supply (UPS) is a power protection device that includes an energy storage device and uses an inverter as its main component. It provides a stable voltage and frequency output, and is primarily used to provide uninterrupted power to electrical devices. With advances in power electronics technology and the rapid development of the IT industry in recent years, UPS has found increasing application in industries such as industry, communications, aerospace, military, and home life.

[0003] Monitoring the health of a UPS is a crucial part of routine maintenance. Currently, most UPS systems only issue warnings after a failure occurs, failing to provide preventive measures. Alternatively, a system can periodically monitor specific parameters to determine and predict UPS failures based on these measurements.

[0004] However, the above method cannot accurately and effectively predict the health of the UPS, cannot accurately and intuitively predict the potential failure of the UPS, and cannot intuitively and effectively obtain the health change status and trend analysis results of the UPS. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a health status monitoring method, a UPS device and a computer-readable storage medium to address the problem that the above-mentioned UPS cannot predict the health status.

[0006] The present invention solves the above-mentioned technical problem by providing a health status monitoring method applied to a UPS device, the method comprising:

[0007] Detecting a noise value generated by a UPS device and obtaining a load parameter of the UPS device;

[0008] generating a correction coefficient according to the load parameter, and generating a first health status index using the noise value and the correction coefficient;

[0009] When the first health status index exceeds a first preset value range, an alarm signal is output.

[0010] As a further improvement of the present invention, the correction coefficient includes a load rate correction coefficient and a load type correction coefficient;

[0011] Generating a first health status index using the noise value and the correction coefficient includes:

[0012] The first health status index K1 is generated using the following calculation formula:

[0013] K1=Zb0×KL×KT / Z

[0014] Where Zb0 is the noise value of the UPS device in the no-load state, KL is the load rate correction factor, KT is the load type correction factor, and Z is the noise value obtained by detection.

[0015] As a further improvement of the present invention, the load parameters include the output voltage and output current of the UPS device, and the correction coefficient includes a load rate correction coefficient;

[0016] Generating a correction coefficient according to the load parameter includes:

[0017] Calculating the load power of the UPS device according to the output voltage and output current of the UPS device;

[0018] Calculating the load rate of the UPS device according to the load power and the rated power of the UPS device;

[0019] A load rate correction coefficient of the UPS device is obtained according to the load rate.

[0020] As a further improvement of the present invention, obtaining a load rate correction coefficient of the UPS device according to the load rate of the UPS device includes:

[0021] Obtaining a first noise reference value Zn corresponding to the load rate;

[0022] The load factor correction factor KL is generated using the following formula:

[0023] KL=Zn / Zb0

[0024] Among them, Zb0 is the noise value of the UPS device in the no-load state.

[0025] As a further improvement of the present invention, the load parameter includes the output current of the UPS device, and the correction factor includes a load type correction factor;

[0026] Generating a correction coefficient according to the load parameter includes:

[0027] generating a current peak ratio of the output current according to the output current of the UPS device;

[0028] Obtaining a load type of the UPS device according to the current peak ratio;

[0029] Obtain a load type correction coefficient for the UPS device according to the load type.

[0030] As a further improvement of the present invention, obtaining a load type correction coefficient of the UPS device according to the load type includes:

[0031] Obtaining a second noise reference value Zm corresponding to the load type;

[0032] Use the following calculation to generate the correction factor KT for the load type:

[0033] KT=Zm / Zb0

[0034] Among them, Zb0 is the noise value of the UPS device in the no-load state.

[0035] As a further improvement of the present invention, the method further comprises:

[0036] Performing Fourier decomposition on the noise value, and obtaining the sound intensity of the noise value in the switching frequency segment of the UPS device;

[0037] generating a second health status index according to the sound intensity of the switching frequency segment and a correction coefficient;

[0038] When the second health status index exceeds a second preset value range, an alarm signal is output.

[0039] As a further improvement of the present invention, generating a second health status index according to the sound intensity of the switching frequency segment and the correction coefficient includes:

[0040] The second health status index K2 is generated using the following calculation formula:

[0041] K2=Zfsw0×KL×KT / Zfsw

[0042] Where Zfsw0 is the sound intensity of the switching frequency segment of the UPS device in the no-load state, KL is the load rate correction factor, KT is the load type correction factor, and Zfsw is the sound intensity of the switching frequency segment corresponding to the noise value obtained by decomposition detection.

[0043] The present invention also provides a UPS device, comprising a processor and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, and the instructions are executed by the processor so that the processor can execute the health status monitoring method described above.

[0044] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the health status monitoring method as described above.

[0045] The present invention has the following beneficial effects: by measuring the noise during UPS operation to determine the operating status of the UPS, it is possible to detect in advance whether there are potential problems in the operation of the UPS equipment, thereby eliminating the problems in the bud and avoiding losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a flow chart of a health status monitoring method provided by an embodiment of the present invention;

[0047] Figure 2 1 is a flow chart of generating a correction coefficient in a health status monitoring method provided by an embodiment of the present invention;

[0048] Figure 3 is another flowchart of generating a correction coefficient in the health status monitoring method provided by an embodiment of the present invention;

[0049] Figure 4 is a schematic diagram of a process for generating a second health status index in a health status monitoring method provided by another embodiment of the present invention;

[0050] Figure 5 Schematic diagram of a UPS device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] The present invention measures the noise during UPS operation and generates health parameters for characterizing the operating status of the UPS based on the measurement results. This can detect potential risks during UPS operation in advance, thereby eliminating problems in the bud and avoiding losses.

[0053] like Figure 1 The figure shows a flow chart of a health status monitoring method provided by an embodiment of the present invention. This method can be applied to a UPS device, such as a control unit integrated into a UPS device or a host computer in communication with the UPS device. The following description uses a control unit integrated into a UPS device as an example. That is, the method of this embodiment includes the following steps performed by the control unit of the UPS device:

[0054] Step S11: Detecting the noise value of the UPS device and obtaining the load parameters of the UPS device. The noise value and load parameters can be obtained by real-time sampling according to a preset period during the operation of the UPS device.

[0055] In this step, noise generated during UPS operation can be detected using a noise sensor or noise detection circuit. Specifically, the noise sensor or noise detection circuit converts the noise into a corresponding electrical signal. The noise sensor or noise detection circuit can be installed within the UPS housing and electrically connected to a control unit of the UPS. The control unit can obtain a corresponding noise value based on the electrical signal output by the noise sensor or noise detection circuit. Specifically, the noise value can include, for example, sound intensity.

[0056] The load parameters of the UPS device may include the output voltage, output current, etc. of the UPS device, which can be obtained through detection of corresponding voltage detection circuits, current detection circuits, etc.

[0057] Step S12: Generate a correction coefficient according to the load parameter, and generate a first health status index using the noise value and the correction coefficient.

[0058] Since the noise value of the UPS device is closely related to the operating status of the UPS device, the correction coefficient related to the load parameter can be combined with the noise value to generate a first health status index, and the health status of the UPS device can be characterized by the first health status index.

[0059] Step S13: When the first health status index exceeds a first preset value range, an alarm signal is output.

[0060] Specifically, when the first health status index ≤ Y1 (this value can be set according to the rated power, application scenario, etc. of the UPS device), the control unit of the UPS device can output a first alarm signal to notify maintenance personnel that the noise of the UPS device deviates from the normal value and the health status of the UPS device is poor; when the first health status index ≤ Y2 (this value can be set according to the rated power, application scenario, etc. of the UPS device, and Y2 is less than Y1), the control unit of the UPS device can output a second alarm signal to notify maintenance personnel that there is a safety hazard in the UPS device and the UPS device needs to be inspected and repaired.

[0061] The above-described health status monitoring method, by measuring UPS noise during operation, generating a first health status index based on the noise, and determining the UPS's operating status based on the health status index, can proactively identify potential issues during UPS operation, significantly improving UPS safety. For example, if the UPS's inverter operation is abnormal and the inverter transformer current increases abnormally, resulting in increased UPS operating noise, the noise value detected in step S11 is abnormal, and the calculated first health status index is also abnormal. Consequently, an alarm signal can be generated in step S13 to alert the user to perform maintenance.

[0062] Since the noise level of the UPS device is closely related to the load power and load type of the UPS device, for example, the higher the load power, the greater the noise of the UPS device; the load type includes linear load, rectifier load, etc. Therefore, in one embodiment of the present invention, the above correction factor includes a load rate correction factor and a load type correction factor, wherein the load rate correction factor is related to the load power of the UPS device, and the higher the load power, the greater the load rate correction factor. The process of obtaining the load rate correction factor and the load type correction factor can be referred to below. Figure 2 、 Figure 3 Example of .

[0063] Accordingly, in the above step S12, that is, using the noise value and the correction coefficient to generate the first health status index, the following steps may be specifically performed:

[0064] The first health status index K1 is generated using the following calculation formula (1):

[0065] K1=Zb0×KL×KT / Z (1)

[0066] Here, Zb0 is the noise value of the UPS device in the no-load state. This value may be stored in the UPS device's storage device (e.g., a chip or flash memory) when the UPS device leaves the factory. KL is the load factor correction factor, KT is the load type correction factor, and Z is the noise value obtained by detection, i.e., the real-time noise value. Of course, the above-mentioned noise value Zb0 of the UPS device in the no-load state can also be modified by the user based on actual operating conditions as the UPS device is used.

[0067] According to the above calculation formula (1), when the load rate and load type are the same, the smaller the first health status index is, the worse the health status of the UPS device is.

[0068] In one embodiment of the present invention, the load parameters specifically include the output voltage and output current of the UPS device, and the correction coefficient may only include the load rate correction coefficient. In this case, in the above step S12, generating the correction coefficient based on the load parameters may specifically include:

[0069] Step S121: Calculate the load power of the UPS device according to the output voltage and output current of the UPS device.

[0070] For example, the load power of the UPS device may be the product of the output voltage and the output current, etc. The specific calculation method thereof belongs to conventional technology in this field and will not be described in detail here.

[0071] Step S122: Calculate the load rate of the UPS device according to the load power and the rated power of the UPS device.

[0072] For example, the load rate of a UPS device may be the quotient of the load power and the rated power.

[0073] Step S123: Obtaining a load factor correction coefficient of the UPS device according to the load factor.

[0074] Specifically, the load rate correction coefficient can be obtained by the following method: first obtain the first noise reference value Zn corresponding to the load rate, and then use the following calculation formula to generate the load rate correction coefficient KL:

[0075] KL=Zn / Zb0 (2)

[0076] Here, Zb0 is the noise value of the UPS device in a no-load state, which may be stored in a storage device of the UPS device when the UPS device leaves the factory.

[0077] The first noise reference values ​​Zn at different load rates may be stored in advance in a storage device of the UPS device. For example, the following Table 1 may be stored in the storage device of the UPS device:

[0078] Load factor 0％ 5％ ....... 100％ First noise reference value Zn (0%) Zn (5%) ....... Zn (100%)

[0079] To improve accuracy, the noise levels of multiple UPS devices at different load rates can be measured and the average of the noise levels at the corresponding load rates can be taken as the first noise reference value Zn at the corresponding load rate. Of course, in actual applications, the load rate correction coefficient KL at different load rates can also be directly stored in the storage device of the UPS device.

[0080] In one embodiment of the present invention, the load parameter specifically includes the output current of the UPS device, and the correction coefficient may only include the load type correction coefficient. In this case, in the above step S12, generating the correction coefficient based on the load parameter may specifically include:

[0081] Step S124: generating a current peak ratio of the output current according to the output current of the UPS device.

[0082] Specifically, the current peak ratio of the output current may be a ratio of a peak value to an effective value of the output current of the UPS device.

[0083] Step S125: Obtain the load type of the UPS device according to the current peak ratio.

[0084] For example, when the current peak ratio is 1.4, it can be confirmed that the load of the UPS device is a linear load; when the current peak ratio is 3, it can be confirmed that the load of the UPS device is a rectifying load.

[0085] Step S126: Obtain a load type correction coefficient of the UPS device according to the load type.

[0086] Specifically, the load type correction coefficient can be obtained by the following method: first obtain the second noise reference value Zm corresponding to the load type, and then use the following calculation formula to generate the load type correction coefficient KT:

[0087] KT=Zm / Zb0 (3)

[0088] Here, Zb0 is the noise value of the UPS device in a no-load state, which may be stored in a storage device of the UPS device when the UPS device leaves the factory.

[0089] The second noise reference values ​​Zm of different load types may be stored in advance in a storage device of the UPS device. For example, the following Table 2 may be stored in the storage device of the UPS device:

[0090] Current peak ratio 1.4 1.5 ....... 3 Second noise reference value Zm1 Zm2 ....... Zmn

[0091] Similarly, to improve accuracy, the noise levels of multiple UPS devices under different load types can be detected, and the average of the noise levels under the corresponding load types can be taken as the second noise reference value Zm for the corresponding load type. Of course, in actual applications, the load type correction coefficient KT for different load types can also be directly stored in the storage device of the UPS device.

[0092] Combine Figure 4 As shown, in one embodiment of the present invention, the health status monitoring method may further include the following steps performed by the control unit of the UPS device:

[0093] Step S15: Perform Fourier decomposition on the noise value (after decomposition, the sound intensity at different frequencies can be obtained), and obtain the sound intensity in the switching frequency range of the UPS device in the noise value.

[0094] For UPS equipment, the main noise is the noise caused by the high-frequency current ripple generated by the opening and closing of the power switch. Therefore, by taking the sound intensity of the switching frequency segment, the influence of noise from other parts or the external environment can be eliminated.

[0095] Step S16: generating a second health status index according to the sound intensity of the switching frequency segment and the correction coefficient, and outputting an alarm signal when the second health status index exceeds a second preset value range.

[0096] Specifically, the second health status index K2 can be generated using the following calculation formula:

[0097] K2=Zfsw0×KL×KT / Zfsw (4)

[0098] Wherein, Zfsw0 is the sound intensity of the switching frequency segment of the UPS device in the no-load state, KL is the load factor correction coefficient, and Zfsw is the sound intensity of the switching frequency segment corresponding to the noise value obtained by decomposition detection.

[0099] When the second health index K2≤Y3 (this value can be set according to the rated power of the UPS device, the usage scenario, etc.), the control unit of the UPS device outputs a first alarm signal to inform the user that the noise of the UPS device is abnormal, deviates from the normal value, and the health index of the UPS device is low; when the second health status index K2≤Y4 (this value can be set according to the rated power of the UPS device, the usage scenario, etc.), the control unit of the UPS device outputs a second alarm signal to inform the user that there is a safety hazard in the UPS device and maintenance is required.

[0100] The second health status index K2 is mainly used to monitor whether the working status of the high-frequency conversion circuit of the UPS device is normal, and complements the detection of the first health status index K1 to make the detection more accurate.

[0101] The present invention also provides a UPS device, combined with Figure 5 As shown, the UPS device 5 includes a processor 51 and a memory 52 that is communicatively connected to the processor 51; wherein the memory 52 stores instructions that can be executed by the processor 51, and the instructions are executed by the processor 51 so that the processor 51 can execute the health status monitoring method as described above.

[0102] The UPS device 5 in this embodiment is the same as the above Figure 1-4 The health status monitoring method in the corresponding embodiment belongs to the same concept. Its specific implementation process is detailed in the corresponding method embodiment, and the technical features in the method embodiment are applicable to the device embodiment, which will not be repeated here.

[0103] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the health status monitoring method as described above.

[0104] The computer-readable storage medium in this embodiment is the same as the above Figure 1-4 The health status monitoring method in the corresponding embodiment belongs to the same concept, and its specific implementation process is detailed in the corresponding method embodiment, and the technical features in the method embodiment are applicable in this storage medium embodiment, which will not be repeated here.

[0105] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed. The functional units and modules in the embodiment can be integrated into one processor, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0107] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0108] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0109] In addition, the functional units in the various embodiments of the present application may be integrated into a single processor, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0110] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or interface switching device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media does not include electric carrier signals and telecommunication signals.

[0111] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A health status monitoring method, applied to UPS equipment, characterized in that: The method comprises: detecting a noise value of noise generated by a UPS device and obtaining a load parameter of the UPS device, wherein the noise is caused by high-frequency current ripple generated by opening and closing a power switch, and the load parameter includes at least one of an output voltage or an output current of the UPS device; generating a correction coefficient according to the load parameter, and generating a first health status index using the noise value and the correction coefficient, wherein the correction coefficient includes at least one of a load rate correction coefficient and a load type correction coefficient; the higher the load power, the larger the load rate correction coefficient; the load type correction coefficient is related to the load type of the UPS, and the load type includes a linear load and a rectifier load; When the first health status index exceeds a first preset value range, an alarm signal is output.

2. The health status monitoring method according to claim 1, characterized in that: The correction coefficient includes a load rate correction coefficient and a load type correction coefficient; Generating a first health status index using the noise value and the correction coefficient includes: The first health status index K1 is generated using the following calculation formula: K1=Zb0×KL×KT / Z Where Zb0 is the noise value of the UPS device in the no-load state, KL is the load rate correction factor, KT is the load type correction factor, and Z is the noise value obtained by detection.

3. The health status monitoring method according to claim 1, characterized in that: The load parameters include the output voltage and output current of the UPS device, and the correction coefficient includes a load rate correction coefficient; Generating a correction coefficient according to the load parameter includes: Calculating the load power of the UPS device according to the output voltage and output current of the UPS device; Calculating the load rate of the UPS device according to the load power and the rated power of the UPS device; A load rate correction coefficient of the UPS device is obtained according to the load rate.

4. The health status monitoring method according to claim 3, characterized in that: Obtaining a load rate correction coefficient of the UPS device according to the load rate of the UPS device includes: Obtaining a first noise reference value Zn corresponding to the load rate; The load factor correction factor KL is generated using the following formula: KL=Zn / Zb0 Among them, Zb0 is the noise value of the UPS device in the no-load state.

5. The health status monitoring method according to claim 1, characterized in that: The load parameter includes the output current of the UPS device, and the correction factor includes a load type correction factor; Generating a correction coefficient according to the load parameter includes: generating a current peak ratio of the output current according to the output current of the UPS device; Obtaining a load type of the UPS device according to the current peak ratio; Obtain a load type correction coefficient for the UPS device according to the load type.

6. The health status monitoring method according to claim 5, characterized in that: Obtaining a load type correction coefficient of the UPS device according to the load type includes: Obtaining a second noise reference value Zm corresponding to the load type; Use the following calculation to generate the correction factor KT for the load type: KT=Zm / Zb0 Among them, Zb0 is the noise value of the UPS device in the no-load state.

7. The health status monitoring method according to any one of claims 1 to 6, characterized in that: The method further comprises: Performing Fourier decomposition on the noise value, and obtaining the sound intensity of the noise value in the switching frequency segment of the UPS device; generating a second health status index according to the sound intensity of the switching frequency segment and a correction coefficient; When the second health status index exceeds a second preset value range, an alarm signal is output.

8. The health status monitoring method according to claim 7, characterized in that: Generating a second health status index according to the sound intensity of the switching frequency segment and the correction coefficient includes: The second health status index K2 is generated using the following calculation formula: K2=Zfsw0×KL×KT / Zfsw Where Zfsw0 is the sound intensity of the switching frequency segment of the UPS device in the no-load state, KL is the load rate correction factor, KT is the load type correction factor, and Zfsw is the sound intensity of the switching frequency segment corresponding to the noise value obtained by decomposition detection.

9. A UPS device, characterized in that: It includes a processor and a memory communicatively connected to the processor; wherein the memory stores instructions that can be executed by the processor, and the instructions are executed by the processor to enable the processor to execute the health status monitoring method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the health status monitoring method according to any one of claims 1 to 8.

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