A fault diagnosis system for silent anti-flooding pumps

Abstract

The embodiment of the present application provides a silent anti-flooding water pump fault diagnosis system, the system includes: a noise detection module, a vibration detection module, a fault collection module, a fault diagnosis module, and a fault warning module; the noise detection module is used to collect the sound signal of the water pump equipment; the vibration detection module is used to detect the vibration signal of the water pump equipment; the fault collection module is used to send the sound digital signal and the vibration data signal to the fault diagnosis module; the fault diagnosis module includes an external device diagnosis module and an internal device diagnosis module, which are used to transmit the external device diagnosis results and the internal device diagnosis results to the fault warning module; the fault warning module includes a feedback module and an early warning module, the feedback module is used to provide feedback, and the early warning module is used to provide an alarm. Through this application, not only can the water pump equipment fault be accurately diagnosed and timely feedback be provided, but the fault scope and the cause can also be further located, thereby improving operation and maintenance efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent water pumps, and in particular to a fault diagnosis system for silent anti-flooding water pumps. Background Art

[0002] In the smart water pump system, secondary water supply is provided to users through intelligent control and management of water pump equipment. However, water pump equipment may malfunction during the water supply process. The smart water pump system can provide early warning and timely notification to feedback staff when water pump equipment malfunctions.

[0003] In the existing intelligent water pump system, the abnormal noise that may be emitted by the water pump during operation is generally collected by installing sound sensors and other devices on the water pump equipment. By analyzing the signal frequency and frequency domain characteristics of the abnormal noise, it is determined whether the equipment is faulty, and feedback and warnings are provided to the outside. However, this method can only generally use noise to determine whether the water pump system is faulty and provide early warnings, which has limitations. Water pump equipment has many components, and there may be multiple causes for the failure. It is not ruled out that the noise characteristics of some failures are not obvious. Although the staff can promptly learn that the water pump equipment has a fault through abnormal noise warnings, they still need to further locate the scope of the fault and the cause of the fault, which makes the operation and maintenance efficiency of the water pump equipment low. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a silent anti-flooding pump fault diagnosis system, which can not only accurately diagnose water pump equipment faults and provide timely feedback, but also further locate the fault scope and cause, thereby improving operation and maintenance efficiency.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] A silent anti-flooding pump fault diagnosis system, comprising: a noise detection module, a vibration detection module, a fault collection module, a fault diagnosis module, and a fault warning module;

[0007] The noise detection module is used to collect the sound signal of the water pump equipment and convert the sound signal into

[0008] The sound digital signal is transmitted to the fault collection module;

[0009] The vibration detection module is used to detect the vibration signal of the water pump equipment and convert the vibration signal into a vibration digital signal and transmit it to the fault collection module;

[0010] The fault collection module is configured to receive the sound digital signal and the vibration data signal, and send the sound digital signal and the vibration data signal to the fault diagnosis module;

[0011] The fault diagnosis module includes an external device diagnosis module and an internal device diagnosis module, wherein the external device diagnosis module determines an external device diagnosis result based on the received sound digital signal, and the internal device diagnosis module determines an internal device diagnosis result based on the received vibration digital signal, and the internal device diagnosis result includes an internal operation fault and an internal device fault; the fault diagnosis module is further used to transmit the external device diagnosis result and the internal device diagnosis result to the fault warning module;

[0012] The fault warning module includes a feedback module and a warning module. The feedback module is used to feed back the received external device diagnosis results and internal device diagnosis results. The warning module is used to issue an alarm based on the received external device diagnosis results and internal device diagnosis results.

[0013] Furthermore, the noise detection module includes a noise detection sensor and a sound signal converter. The operation process of the noise detection module includes:

[0014] Acquiring the sound signal emitted by the water pump equipment during the detection period through the noise detection sensor;

[0015] Performing discrete sampling on the sound signal to obtain a corresponding discrete audio signal;

[0016] The discrete audio signal is subjected to signal conversion processing by the sound signal converter to obtain a decibel value of the discrete audio signal, and the decibel value is sent to a fault collection module as a sound digital signal.

[0017] Furthermore, the vibration detection module includes a vibration detection sensor and a vibration signal converter. The operation process of the vibration detection module includes:

[0018] During the detection period, the vibration signal inside the water pump equipment is obtained by the vibration detection sensor;

[0019] performing signal conversion processing on the vibration signal by the vibration signal converter to obtain a vibration value of the vibration signal;

[0020] According to a preset mapping relationship, the vibration value is mapped to a corresponding vibration decibel value, and the vibration decibel value is sent to the fault collection module as a vibration digital signal.

[0021] Furthermore, the external device diagnostic module includes a noise diagnostic module, and the operation process of the noise diagnostic module includes:

[0022] Acquire a sound digital signal received from a fault collection module and a preset first noise signal threshold;

[0023] When the decibel value corresponding to the sound digital signal is less than or equal to the first noise signal threshold, it is determined that there is no external fault in the water pump device, and the external device diagnosis result is determined to be normal, and sent to the fault warning module;

[0024] When the decibel value corresponding to the sound digital signal is greater than the first noise signal threshold, it is determined that the water pump device has an external fault, wherein the external fault is used to determine that the water pump device has a fault other than the water pump;

[0025] The external fault is used as a diagnosis result of the external device and transmitted to the fault warning module.

[0026] Furthermore, the internal device diagnostic module includes a vibration diagnostic module, and the operation process of the vibration diagnostic module includes:

[0027] Acquire a vibration digital signal received from a fault collection module, a preset second noise signal threshold, and a third noise signal threshold, wherein the third noise signal threshold is greater than the second noise signal threshold;

[0028] When the vibration decibel value corresponding to the vibration digital signal is less than or equal to the second noise signal threshold, it is determined that there is no internal fault in the water pump device, and the internal device diagnosis result is determined to be normal, and sent to the fault warning module;

[0029] When the vibration decibel value corresponding to the vibration digital signal is greater than the second noise signal threshold and less than the third noise signal threshold, it is determined that the water pump device has an internal operation fault, wherein the internal operation fault is used to determine that the water pump has an operation fault;

[0030] The internal operation fault is used as an internal equipment diagnosis result and transmitted to the fault warning module.

[0031] Furthermore, the operation process of the vibration diagnosis module also includes:

[0032] When the vibration decibel value corresponding to the vibration digital signal is greater than the third noise signal threshold, it is determined that an internal device failure exists in the water pump equipment, wherein the internal device failure is used to determine that a device failure exists in the water pump;

[0033] The internal device failure is used as an internal equipment diagnosis result and transmitted to the failure warning module.

[0034] Furthermore, the operation process of the fault warning module includes:

[0035] Obtaining external device diagnosis results and internal device diagnosis results sent by the fault diagnosis module;

[0036] When the external device diagnosis result is determined to be an external fault, the fault information other than the water pump is sent to the feedback platform through the feedback module and the early warning module is notified;

[0037] When the internal equipment diagnosis result is determined to be an internal operation fault, the operation fault information of the water pump is sent to the feedback platform through the feedback module and the early warning module is notified;

[0038] When it is determined that the internal equipment diagnosis result is an internal device failure, the device failure information of the water pump is sent to the feedback platform through the feedback module and the early warning module is notified.

[0039] Furthermore, the operation process of the fault warning module also includes:

[0040] The warning module starts to alarm when at least one of the following conditions is met:

[0041] The feedback platform receives fault information other than that of the water pump;

[0042] The feedback platform receives information about the operating failure of the water pump;

[0043] The feedback platform receives device failure information of the water pump.

[0044] The embodiments of the present application have the following beneficial effects:

[0045] By setting up a noise detection module and a vibration detection module in the silent anti-flooding pump fault diagnosis system, the sound signals and vibration signals generated by the water pump equipment during operation are detected and collected at the same time, and then the sound signals and vibration signals are transmitted to the fault diagnosis module through the fault collection module. The fault diagnosis module diagnoses the sound signals and vibration signals to determine whether the water pump equipment has an external equipment fault, an internal operation fault, or an internal device fault. Finally, the corresponding external and internal equipment diagnosis results are sent to the fault warning module for feedback and warning. In this way, it is possible to diagnose not only whether the water pump equipment is faulty, but also locate the scope of the fault and the cause of the fault, and further determine whether it is an external equipment fault or a fault caused by the internal operation of the equipment or a device fault, simplifying the fault location process for staff and improving operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the architecture of the silent anti-flooding pump fault diagnosis system provided in an embodiment of the present application;

[0047] Figure 2 It is a schematic diagram of the operation of the silent anti-flooding pump fault diagnosis system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions of the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of them. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the embodiments of the present application.

[0049] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0050] In the following description, the terms "first, second, and third" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first, second, and third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0051] Unless otherwise defined, all technical and scientific terms used in the embodiments of the present application have the same meanings as those commonly understood by those skilled in the art in the technical field of the embodiments of the present application. The terms used in the embodiments of the present application are only for the purpose of describing the embodiments of the present application and are not intended to limit the embodiments of the present application.

[0052] The implementation of the silent anti-flooding pump fault diagnosis system provided by the embodiment of the present application is further described in detail below with reference to the drawings in the specification.

[0053] See also Figure 1 , Figure 1 This is a schematic diagram of the architecture of the silent anti-flooding pump fault diagnosis system provided by the embodiment of the present application.

[0054] The system can be applied to water pump equipment, which is equipment used for secondary water supply and includes water pumps, inverters, transformers, flow meters, and other secondary water supply components. Failures in these components can severely impact secondary water supply, making fault diagnosis of water pump equipment crucial. The silent anti-flooding pump fault diagnosis system provided in this embodiment specifically includes the following modules: a noise detection module, a vibration detection module, a fault collection module, a fault diagnosis module, and a fault warning module. Each module is described in detail below.

[0055] The noise detection module is used to collect sound signals that may exist during the operation of the water pump equipment, convert the sound signals into digital sound signals, and transmit them to the fault collection module. The vibration detection module is used to detect vibration signals that may exist during the operation of the water pump equipment, convert the vibration signals into digital vibration signals, and transmit them to the fault collection module.

[0056] The fault collection module is used to receive the sound digital signal sent by the noise detection module and the vibration data signal sent by the vibration detection module in real time, and then send the sound digital signal and the vibration data signal to the fault diagnosis module.

[0057] The fault diagnosis module specifically includes an external device diagnosis module and an internal device diagnosis module. The external device diagnosis module analyzes and diagnoses based on the received sound digital signal to determine the external device diagnosis result. The external device diagnosis result is to determine that there is an external fault in the water pump equipment, which is generally a fault in equipment other than the water pump in the water pump equipment, such as a fault in the frequency converter. The parameter setting of the frequency converter may be abnormal, which causes abnormal noise in the water pump equipment.

[0058] The internal equipment diagnosis module analyzes and diagnoses the received vibration digital signal to determine the internal equipment diagnosis result. Furthermore, the internal equipment diagnosis result includes internal operation faults and internal device faults. Because the water pump equipment may be a water pump fault, the water pump fault may be a fault caused by the operation of the water pump or a fault of the water pump device. And since the water pump will inevitably produce some natural sounds and vibrations during operation, these natural sounds are not too obvious and the decibel value is low. There are limitations in determining whether the water pump has a fault only by abnormal noise. Here, the embodiment of the present application detects the vibration generated by the water pump equipment during operation through the vibration detection module, collects the vibration data signal, and then determines the internal operation fault and internal device fault of the water pump equipment through the internal equipment diagnosis module.

[0059] After the diagnosis is completed, the fault diagnosis module is also used to transmit the external device diagnosis results and the internal device diagnosis results to the fault warning module.

[0060] The fault warning module includes a feedback module and a warning module. The feedback module has a feedback platform for feeding back the external device diagnosis results and internal device diagnosis results received from the fault diagnosis module through the feedback platform. The warning module is used to issue an alarm based on the external device diagnosis results and internal device diagnosis results.

[0061] The following will be combined Figure 2 Specify the specific functions implemented by each module.

[0062] In some embodiments, the noise detection module of the silent anti-flooding pump fault diagnosis system includes a noise detection sensor and a sound signal converter. The noise detection sensor can be installed anywhere in the water pump equipment to collect sound signals. This is because noise detection uniformly detects noise from every part of the water pump equipment, including all secondary water supply components such as the water pump, inverter, and transformer. Failure in any component can cause the water pump equipment to emit abnormal noise. The sound signal converter is responsible for processing the collected sound signals and then transmitting them to the fault collection module via signal transmission.

[0063] Here, the noise detection module operates as follows: First, the noise detection sensor acquires the sound signals emitted by the water pump during the detection period. These sound signals are continuous and require discrete sampling to obtain corresponding discrete audio signals. Therefore, a fixed timestamp can be set, and a frame of audio signal can be sampled every other timestamp, thus obtaining multiple discrete audio signals. Finally, the discrete audio signals are converted by a sound signal converter to obtain a decibel value, which is then sent as a digital sound signal to the fault collection module. The sound signal converter's processing is actually the final quantization process of converting the sound signal into a digital signal, and the decibel value can well represent the characteristic information of the sound signal. After the conversion is completed, the digital sound signal (i.e., the decibel value) is transmitted to the fault diagnosis module via signal transmission.

[0064] It should be noted that the fault collection module in the embodiment of the present application is actually an intelligent controller. Figure 2 As shown, the intelligent controller can detect and receive signals from noise and vibration sensors in real time. For example, this could be a PLC cabinet or touch screen in an AI cabinet, commonly used in water pump equipment. The cabinet can communicate and transmit information with other modules, such as the fault diagnosis module and feedback platform.

[0065] In some embodiments, the vibration detection module of the silent anti-flooding pump fault diagnosis system includes a vibration detection sensor and a vibration signal converter. The vibration detection sensor is used to detect vibrations in the water pump equipment. Since the water pump is the only component in the water pump equipment that generates vibrations and natural sounds during operation, the vibration detection sensor in the embodiments of the present application can only be installed on the water pump to detect vibrations and diagnose possible water pump faults. The vibration detection sensor is responsible for processing the collected vibration signals and then transmitting them to the fault collection module via signal transmission.

[0066] The vibration detection module operates as follows: During the detection period, the vibration detection sensor acquires vibration signals that may be generated within the pump equipment. The vibration signal converter then converts the vibration signal into a vibration value. Vibration is actually a series of small displacements, and the vibration value corresponds to the movement speed, expressed in millimeters per second (mm / s). The vibration signal converter performs the final quantization step, converting the vibration signal into a digital signal. The vibration value effectively represents the characteristic information of the vibration signal.

[0067] Since vibration is also related to sound, sound is also generated when vibration is generated. Before performing a diagnosis through the silent anti-flooding pump fault diagnosis system, the embodiment of the present application pre-establishes a corresponding relationship between sound and vibration, that is, mapping the vibration value of the vibration to the decibel value of the sound, thereby obtaining a mapping relationship associated with sound and vibration. Through the mapping relationship, any vibration value within a preset range can be mapped to a vibration decibel value, for example, 10 mm per second is mapped to 5 decibels. Therefore, analyzing the vibration signal is equivalent to analyzing the sound signal.

[0068] According to the preset mapping relationship, the vibration value is mapped to the vibration decibel value corresponding to the sound digital signal, and the vibration decibel value is sent to the fault collection module as a vibration digital signal through signal transmission, that is, to the PLC equipment cabinet or AI equipment cabinet touch screen.

[0069] It should be noted that although the vibration of the water pump equipment will also produce sound, the noise detection sensor and the vibration detection sensor work independently and are installed in different positions on the water pump equipment. During implementation, sound and vibration collection can be carried out at the same time, and the two do not affect each other during operation.

[0070] In some embodiments, after the fault collection module receives the decibel value corresponding to the sound digital signal and the vibration decibel value corresponding to the vibration digital signal, it sends the corresponding data to the fault diagnosis module through information communication. Figure 2 As shown, the fault diagnosis module can be an intelligent terminal, which can be used to coordinate and control the operation of each module of the silent anti-flooding pump fault diagnosis system. A data processing program or data processing software is installed inside, which can perform PLC logic operations on decibel values ​​or vibration decibel values. The details are explained below.

[0071] The fault diagnosis module is divided into two parts, including an external device diagnosis module and an internal device diagnosis module, which are used to perform PLC logic operations on decibel values ​​and vibration decibel values ​​respectively. Here, the external device diagnosis module includes a noise diagnosis module. The operation process of the noise diagnosis module is to first obtain the sound digital signal received from the fault collection module and the preset first noise signal threshold. The first noise signal threshold is the judgment standard for noise diagnosis, which is pre-set by the silent anti-flooding pump fault diagnosis system before diagnosis. Every time there is a fault in the water pump equipment, the noise sound signal is collected by the noise detection sensor and the corresponding decibel value is determined. After collecting data many times, the noise diagnosis module can determine a decibel value range that can determine that the noise is a water pump equipment fault based on a large amount of data, and use the boundary of this decibel value range as the first noise signal threshold, recorded as DB2.

[0072] For example, through multiple sound signal collections, it is determined that the decibel value range of the noise generated by the fault is 0 to 10 decibels. The sound within the range of 0 to 10 decibels is the normal sound of the water pump equipment, and the noise exceeding 10 decibels is the abnormal sound caused by the fault. Therefore, 10 decibels is determined as the first noise signal threshold.

[0073] Next, a PLC logic operation is performed on the decibel value of the sound digital signal using the first noise signal threshold, i.e., a sound comparison is performed based on the decibel value DB1 corresponding to the sound digital signal and the first noise signal threshold DB2. When the decibel value DB1 corresponding to the sound digital signal is less than or equal to the first noise signal threshold DB2, that is, DB1 ≤ DB2, it is determined that there is no external fault in the water pump equipment. Here, when the decibel value of the sound digital signal is less than or equal to the preset first noise signal threshold, it indicates that the water pump equipment is normal and there is no fault, and the noise generated is the normal sound of the equipment operation. The external device diagnosis result is thus determined to be normal, and the external device diagnosis result is sent to the fault warning module.

[0074] When the decibel value DB1 corresponding to the sound digital signal is greater than the first noise signal threshold DB2, that is, DB1>DB2, it is determined that there is an external fault in the water pump equipment, wherein the external fault is used to determine that there is a fault in the water pump equipment other than the water pump. Here, when the sound digital signal is greater than the preset first noise signal threshold, it means that the noise may be caused by an external fault in the water pump equipment, and an alarm needs to be issued. The scope of the water pump equipment fault at this time is determined by the external fault. The external fault is generally a fault in equipment other than the water pump in the water pump equipment, such as a fault in the frequency converter, transformer, power supply or other device. Furthermore, if it is a frequency converter, it may be that the parameter settings of the frequency converter are abnormal, causing abnormal noise in the water pump equipment. Finally, the external fault is transmitted to the fault warning module as the external equipment diagnosis result.

[0075] In some embodiments, the internal equipment diagnosis module in the fault diagnosis module includes a vibration diagnosis module. The operation process of the vibration diagnosis module is to first obtain the vibration digital signal received from the fault collection module, the preset second noise signal threshold and the third noise signal threshold, and the third noise signal threshold is greater than the second noise signal threshold. The second noise signal threshold and the third noise signal threshold are the judgment criteria for vibration diagnosis, and are also pre-set by the silent anti-flooding pump fault diagnosis system before diagnosis. Every time there is a fault in the water pump system, the vibration signal of the noise is collected by the vibration sensor installed on the water pump and the vibration decibel value of the corresponding vibration value is determined, and then the vibration decibel value range of the water pump equipment fault can be determined by the vibration module.

[0076] In this embodiment of the present application, the decibel level of the sound accompanying the water pump vibration is very low (not high enough to be identified as a fault noise by the noise diagnosis module), resulting in a relatively small distribution range of vibration decibel levels corresponding to the vibration level. Furthermore, the types of water pump faults that can occur are quite diverse. Therefore, in this embodiment of the present application, internal faults (and water pump faults) are divided into two categories: internal operational faults and internal device faults. The vibrations caused by these two types of internal faults differ to a certain extent, which allows for the distinction between the two.

[0077] Internal operational faults typically occur during pump operation, such as an unfinished impeller, which can cause vibrations when the impeller is running. Internal device faults typically occur within the pump's mechanism, such as an inadequate or inadequately secured base or pump resonance. These conditions can cause vibrations during operation. To diagnose these two types of internal pump faults, two vibration decibel ranges are required to confirm that vibrations indicate a pump equipment fault. Based on these ranges, a second noise signal threshold (denoted as DB4) and a third noise signal threshold (denoted as DB6) are determined. The vibration decibel ranges can be determined by collecting vibration signals from a vibration sensor when the pump generates abnormal vibrations and determining the corresponding vibration decibel values. Through extensive data collection and analysis, the distribution ranges of vibration decibel values ​​corresponding to internal operational faults and internal device faults are determined.

[0078] For example, if multiple vibration signal collections indicate an internal operation fault and the decibel range is determined to be 15 to 30 decibels, the second noise signal threshold (DB4) for determining an internal operation fault can be determined to be 15 decibels. Similarly, the decibel range for determining an internal device fault is greater than 30 decibels. While vibrations within the 0 to 15 decibel range indicate normal equipment vibrations, those within the 15 to 30 decibel range indicate vibrations caused by an internal operation fault in the pump, and those exceeding 30 decibels indicate vibrations caused by an internal device fault in the pump. Therefore, 15 decibels is determined to be the second noise signal threshold, and 30 decibels is determined to be the third noise signal threshold.

[0079] Next, the vibration decibel value of the vibration digital signal is subjected to a PLC logic operation using the second and third noise signal thresholds. That is, two sound comparisons are performed based on the vibration decibel value corresponding to the vibration digital signal and the second and third noise signal thresholds. First, in the first sound comparison, the vibration decibel value corresponding to the vibration digital signal (for example, if the vibration value is 10 mm per second, the corresponding vibration decibel value is denoted as DB3) is compared with the second noise signal threshold (denoted as DB4). When the vibration decibel value DB3 corresponding to the vibration digital signal is less than or equal to the second noise signal threshold DB4, that is, DB3 ≤ DB4, it is determined that the water pump equipment is normal, there is no internal fault, and the vibration generated is the normal vibration of the water pump when it is working. This allows the internal equipment diagnosis result to be determined to be normal, and the internal equipment diagnosis result is sent to the fault warning module.

[0080] When the vibration decibel value DB3 corresponding to the vibration digital signal is greater than the second noise signal threshold DB4 and less than the third noise signal threshold DB5, that is, DB4≤DB3, and DB3<DB5, it is determined that the water pump equipment has an internal operation fault, wherein the internal operation fault is used to determine that the water pump has an operation fault. Here, when the vibration digital signal is greater than the preset second noise signal threshold, it means that the vibration generated by the water pump at this time may be caused by an internal operation fault, and an alarm is required. By judging that the water pump has an internal operation fault, it is determined that the fault is generated during the operation of the water pump. For example, if the impeller of the water pump is not processed, the water pump will produce abnormal vibrations when the impeller is working. Finally, the internal operation fault is transmitted to the fault warning module as the internal equipment diagnosis result.

[0081] In other embodiments, the operation process of the vibration diagnosis module also includes: in the second sound comparison, the vibration decibel value corresponding to the vibration digital signal (for example, the vibration value is 20 mm per second, and the corresponding vibration decibel value is recorded as DB5) is compared with the second noise signal threshold (recorded as DB6). When the vibration decibel value DB5 corresponding to the vibration digital signal is greater than the third noise signal threshold DB6, that is, DB5>DB6, it is determined that there is an internal device fault in the water pump equipment, wherein the internal device fault is used to determine that there is a device fault in the water pump. Here, when the vibration digital signal is greater than the preset third noise signal threshold, it means that there may be an internal device fault in the water pump and an alarm needs to be issued. By determining that there is an internal device fault in the water pump, it can be determined that there is a fault in the device inside the water pump, such as the water pump base is not fixed or the fixing effect is poor, or the pump resonance phenomenon occurs. These faults all cause the water pump to vibrate when it is working.

[0082] Furthermore, if the vibration decibel value DB5 corresponding to the vibration digital signal is less than or equal to the third noise signal threshold DB6 (i.e., DB5 ≤ DB6), the water pump can be determined to be operating normally, with no internal device faults. Consequently, the internal device diagnosis result can be determined to be normal. In this case, the vibration of the water pump is considered normal. Finally, the internal device diagnosis result is transmitted to the fault warning module.

[0083] In other embodiments, considering that the distribution ranges of vibration decibel values ​​corresponding to internal operation faults and internal device faults are different, and the water pump may have internal operation faults and internal device faults at the same time, and the vibration decibel value of the internal device fault is greater than that of the internal operation fault, the vibration generated by the internal device fault may cover the vibration generated by the internal operation fault, and ultimately the vibration signal sensor will only detect the vibration signal of the internal device fault. Therefore, when the embodiment of the present application diagnoses that the water pump has an internal device fault, it assumes that the water pump also has an internal operation fault, and both faults are regarded as internal equipment diagnosis results, transmitted to the fault warning module for feedback, and the warning reminds the staff to pay attention during operation and maintenance.

[0084] The fault warning module of the silent anti-flooding pump fault diagnosis system is used to receive the external device diagnosis results and internal device diagnosis results sent by the fault diagnosis module (i.e., the intelligent terminal) in real time, that is, to send data and alarm-related information to the fault warning module. Next, the feedback module in the fault warning module feeds back the external device diagnosis results and internal device diagnosis results through the feedback platform and issues an alarm through the alarm module. Figure 2As shown, the fault warning module can be the AI ​​secondary water supply platform corresponding to the water pump system, that is, the system software for intelligently controlling secondary water supply. The feedback platform can be a functional module within the secondary water supply system software that provides feedback. This AI secondary water supply platform can also be linked to a user app for staff, allowing them to receive timely feedback through the app. The warning module can be an alarm function within the AI ​​secondary water supply platform, an external alarm device for the AI ​​secondary water supply platform, or an alarm device with alarm functionality that is linked to the fault detection module (smart terminal) or installed within the smart terminal.

[0085] The operation process of the fault warning module can be as follows: first, obtain the external device diagnosis results and internal device diagnosis results sent by the fault diagnosis module, and then analyze and compare them based on these diagnosis results. When the external device diagnosis result is determined to be an external fault, the feedback module sends the fault information other than the water pump to the feedback platform and notifies the warning module. Here, the feedback platform (i.e., the AI ​​secondary water supply platform) can feedback the alarm abnormality information and the abnormality code corresponding to the corresponding external fault on the corresponding platform interface, and at the same time notify the associated staff on the user app that the water pump equipment has fault information other than the water pump.

[0086] If the internal equipment diagnosis indicates an internal operational fault, the feedback module sends the pump operational fault information to the feedback platform and notifies the early warning module. The feedback platform (i.e., the AI ​​secondary water supply platform) can provide an alarm exception message and the corresponding exception code on the corresponding platform interface, and simultaneously notify the relevant staff member of the pump equipment operational fault information on the user app.

[0087] If the internal device diagnosis indicates an internal device failure, the feedback module sends the pump device failure information to the feedback platform and notifies the early warning module. The feedback platform (i.e., the AI ​​secondary water supply platform) can provide an alarm exception message and the corresponding exception code for the internal device failure on the corresponding platform interface, and simultaneously notify the relevant staff member of the pump device failure information on the user app.

[0088] In addition, according to the above, when the internal equipment diagnosis result of the water pump equipment is determined to be an internal device failure, it also indicates that the water pump equipment may have an internal operation failure. Therefore, when the internal equipment diagnosis result is determined to be an internal device failure, the device failure information and operation failure information of the water pump are sent to the feedback platform at the same time through the feedback module, and the early warning module is notified. Similarly, the feedback platform (i.e., the AI ​​secondary water supply platform) can feedback the operation failure and device failure alarm abnormal information, the internal device failure and the internal operation failure corresponding abnormal code on the corresponding platform interface, and at the same time notify the associated staff on the user APP that the water pump equipment has a water pump device failure fault information, and there may also be a water pump operation failure fault information.

[0089] In some embodiments, when the early warning module receives a notification from the feedback module (i.e., the AI ​​secondary water supply platform), the fault early warning module will issue an alarm based on the corresponding notification. The early warning module's operation process also includes: the early warning module initiates an alarm when at least one of the following three alarm conditions is met:

[0090] Among them, the three alarm conditions are: 1. The feedback platform receives fault information other than the water pump; 2. The feedback platform receives operating fault information of the water pump; 3. The feedback platform receives device fault information of the water pump.

[0091] It should be noted that, taking the early warning module as an alarm device, a single alarm device can be used to handle three alarm conditions simultaneously. When at least one of the three conditions is met, the alarm device will trigger an alarm. Alternatively, depending on external conditions and needs, three alarm devices can be configured simultaneously. Each device can handle one of the alarm conditions and trigger an alarm whenever one of the conditions is met. However, the three alarm devices must be independent and function independently, ensuring they do not interfere with each other.

[0092] Specifically, when the feedback platform receives fault information other than that of the water pump, it indicates that there is an external fault in the water pump equipment, and the alarm device of the early warning module will sound an alarm. When the staff learns that there is an external fault in the water pump equipment through the alarm, feedback from the AI ​​secondary water supply platform, and the user APP, they can immediately locate the fault range of the water pump equipment to other devices outside the water pump, such as inverters, transformers, and power supplies, and handle the fault. When the feedback platform receives operating fault information of the water pump, the alarm device of the early warning module will sound an alarm. When the staff learns that there is an internal operating fault in the water pump equipment through the alarm, feedback from the AI ​​secondary water supply platform, and the user APP, they can immediately locate the fault range of the water pump equipment to the water pump, directly detect the operating conditions of the impeller and turbine of the water pump, and handle the fault. When the feedback platform receives device fault information of the water pump, the alarm device of the early warning module will sound an alarm. Through alarms, feedback from the AI ​​secondary water supply platform, and user apps, staff learned that there was an internal device failure in the water pump equipment, and there might also be an internal operation failure. The staff could immediately locate the failure range of the water pump equipment to the water pump, and directly check whether the base of the water pump was not fixed or the fixing effect was poor, and whether there was pump resonance. At the same time, they also checked the possible internal operation failures of the water pump's impeller, turbine, etc., and handled the failures.

[0093] Therefore, through the embodiment of the present application, by setting a noise detection module and a vibration detection module in the silent anti-flooding pump fault diagnosis system, the sound signals and vibration signals that may be generated by the water pump equipment during operation are detected and collected at the same time, and then the sound and vibration signals are transmitted to the fault diagnosis module through the fault collection module. The fault diagnosis module determines whether the water pump equipment has an external equipment fault, an internal operation fault, or an internal device fault by diagnosing the sound signal and the vibration signal. Finally, the corresponding external and internal equipment diagnosis results are sent to the fault warning module for feedback and warning. Thus, not only can it be determined whether the water pump equipment is faulty, but the cause and fault range of the water pump equipment can also be further located, and it can be determined whether it is an external equipment fault or a fault caused by the internal operation of the equipment or an internal device fault, which simplifies the tedious process of staff needing to further locate the fault and find the cause of the fault, saves time and cost, and greatly improves operation and maintenance efficiency.

[0094] The above is only an example of the embodiment of the present application and is not intended to limit the scope of protection of the embodiment of the present application. Any modifications, equivalent replacements, and improvements made within the spirit and scope of the embodiment of the present application are included in the scope of protection of the embodiment of the present application.

Claims

1. A silent anti-flooding pump fault diagnosis system, characterized in that: The system is applied to water pump equipment. The system includes: a noise detection module, a vibration detection module, a fault collection module, a fault diagnosis module, and a fault warning module; The noise detection module is used to collect the sound signal of the water pump equipment and convert the sound signal into The sound digital signal is transmitted to the fault collection module; The vibration detection module is used to detect the vibration signal of the water pump equipment and convert the vibration signal into a vibration digital signal and transmit it to the fault collection module; The fault collection module is configured to receive the sound digital signal and the vibration data signal, and send the sound digital signal and the vibration data signal to the fault diagnosis module; The fault diagnosis module includes an external device diagnosis module and an internal device diagnosis module, wherein the external device diagnosis module determines an external device diagnosis result based on the received sound digital signal, wherein the external device diagnosis result includes faults other than the water pump in the water pump equipment, wherein the faults other than the water pump include faults in the frequency converter, transformer, or power supply; the internal device diagnosis module determines an internal device diagnosis result based on the received vibration digital signal, wherein the internal device diagnosis result includes internal operation faults and internal device faults; the fault diagnosis module is further used to transmit the external device diagnosis result and the internal device diagnosis result to the fault warning module; The fault warning module includes a feedback module and a warning module, wherein the feedback module is used to feed back the received external device diagnosis results and internal device diagnosis results, and the warning module is used to issue an alarm based on the received external device diagnosis results and internal device diagnosis results; The internal device diagnostic module includes a vibration diagnostic module, and the operation process of the vibration diagnostic module includes: Acquire a vibration digital signal received from a fault collection module, a preset second noise signal threshold, and a third noise signal threshold, wherein the third noise signal threshold is greater than the second noise signal threshold; When the vibration decibel value corresponding to the vibration digital signal is less than or equal to the second noise signal threshold, it is determined that there is no internal fault in the water pump device, and the internal device diagnosis result is determined to be normal, and sent to the fault warning module; When the vibration decibel value corresponding to the vibration digital signal is greater than the second noise signal threshold and less than the third noise signal threshold, it is determined that the water pump device has an internal operation fault, wherein the internal operation fault is used to determine that the water pump has an operation fault; Transmitting the internal operation fault as an internal equipment diagnosis result to a fault warning module; The operation process of the vibration diagnosis module also includes: When the vibration decibel value corresponding to the vibration digital signal is greater than the third noise signal threshold, it is determined that an internal device failure exists in the water pump equipment, wherein the internal device failure is used to determine that a device failure exists in the water pump; The internal device failure is used as an internal equipment diagnosis result and transmitted to the failure warning module.

2. The silent anti-flooding pump fault diagnosis system according to claim 1 is characterized in that: The noise detection module includes a noise detection sensor and a sound signal converter. The operation process of the noise detection module includes: Acquiring the sound signal emitted by the water pump equipment during the detection period through the noise detection sensor; Performing discrete sampling on the sound signal to obtain a corresponding discrete audio signal; The discrete audio signal is subjected to signal conversion processing by the sound signal converter to obtain a decibel value of the discrete audio signal, and the decibel value is sent to a fault collection module as a sound digital signal.

3. The silent anti-flooding pump fault diagnosis system according to claim 1, characterized in that: The vibration detection module includes a vibration detection sensor and a vibration signal converter. The operation process of the vibration detection module includes: During the detection period, the vibration signal inside the water pump equipment is obtained by the vibration detection sensor; performing signal conversion processing on the vibration signal by the vibration signal converter to obtain a vibration value of the vibration signal; According to a preset mapping relationship, the vibration value is mapped to a corresponding vibration decibel value, and the vibration decibel value is sent to the fault collection module as a vibration digital signal.

4. The silent anti-flooding pump fault diagnosis system according to claim 1, characterized in that: The external device diagnostic module includes a noise diagnostic module, and the operation process of the noise diagnostic module includes: Acquire a sound digital signal received from a fault collection module and a preset first noise signal threshold; When the decibel value corresponding to the sound digital signal is less than or equal to the first noise signal threshold, it is determined that there is no external fault in the water pump device, and the external device diagnosis result is determined to be normal, and sent to the fault warning module; When the decibel value corresponding to the sound digital signal is greater than the first noise signal threshold, it is determined that the water pump device has an external fault, wherein the external fault is used to determine that the water pump device has a fault other than the water pump; The external fault is used as a diagnosis result of the external device and transmitted to the fault warning module.

5. The silent anti-flooding pump fault diagnosis system according to claim 1, characterized in that: The operation process of the fault warning module includes: Obtaining external device diagnosis results and internal device diagnosis results sent by the fault diagnosis module; When the external device diagnosis result is determined to be an external fault, the fault information other than the water pump is sent to the feedback platform through the feedback module and the early warning module is notified; When the internal equipment diagnosis result is determined to be an internal operation fault, the operation fault information of the water pump is sent to the feedback platform through the feedback module and the early warning module is notified; When it is determined that the internal equipment diagnosis result is an internal device failure, the device failure information of the water pump is sent to the feedback platform through the feedback module and the early warning module is notified.

6. The silent anti-flooding pump fault diagnosis system according to claim 5, characterized in that: The operation process of the fault warning module also includes: The warning module starts to alarm when at least one of the following conditions is met: The feedback platform receives fault information other than that of the water pump; The feedback platform receives information about the operating failure of the water pump; The feedback platform receives device failure information of the water pump.

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