Method, system, device and medium for troubleshooting of elevator vibrations

Abstract

The application provides a method, system, device and medium for troubleshooting of elevator vibration. The method comprises the following steps: obtaining a first vibration main vibration frequency and a first amplitude of a vibration exceeding curve of an elevator car; then disconnecting a frequency converter of an electrical system, energizing to open the brake of the elevator to make the elevator loose brake and coast down, to obtain a vibration curve of each coordinate axis in the coasting down of the elevator, and further obtain a plurality of second vibration data of the coasting down of the elevator; then judging whether the fault reason of the elevator vibration is the electrical system according to the standard vibration data, if yes, troubleshooting the electrical system, if not, obtaining a second vibration main vibration frequency and a second amplitude of a corresponding vibration curve of the second vibration data not meeting the vibration standard; finally comparing the first vibration main vibration frequency and the second vibration main vibration frequency, and comparing the first amplitude and the second amplitude, and troubleshooting the mechanical components or the electrical system according to the comparison result, which can shorten the troubleshooting time.

Description

Technical Field

[0001] This application relates to the field of elevator safety technology, and in particular to a method, system, equipment and medium for troubleshooting elevator vibration. Background Technology

[0002] An elevator is a complex transmission system that requires the coordinated operation of both mechanical and electrical systems. When an elevator experiences vibration problems and the malfunction is not obvious, it is often difficult to determine the cause of the elevator failure.

[0003] Currently, for elevators exhibiting significant vibration, the cause can be quickly identified and addressed directly. However, for more complex faults, the primary method is to eliminate components one by one, resulting in low efficiency. Since troubleshooting electrical system faults is relatively inexpensive, more time is typically spent on them. In such cases, if the elevator vibration is primarily caused by the mechanical system, this prolongs the troubleshooting process and increases costs. Summary of the Invention

[0004] The main objective of this application is to provide a method, system, equipment, and medium for troubleshooting elevator vibration, which can effectively shorten the troubleshooting time.

[0005] To achieve the above objectives, one aspect of this application proposes a method for troubleshooting elevator vibration, the method comprising:

[0006] Obtain the vibration exceedance curve of the elevator car, and perform Fourier transform processing on the vibration exceedance curve to obtain the first dominant vibration frequency and the first amplitude;

[0007] Disconnect the frequency converter of the electrical system, turn on the power to release the elevator brake so that the elevator can release the brake and run away, and obtain the vibration curves of each coordinate axis of the elevator running away by adjusting the braking resistor.

[0008] By analyzing the vibration curves of each coordinate axis, several secondary vibration data of the elevator car slippage were obtained;

[0009] Based on the standard vibration data, determine whether several second vibration data corresponding to each coordinate axis meet the vibration standard. If all second vibration data meet the vibration standard, troubleshoot the electrical system. If there are second vibration data that do not meet the vibration standard, perform Fourier transform on the vibration curve of the corresponding coordinate axis in the second vibration data that does not meet the vibration standard to obtain the second vibration principal frequency and the second amplitude.

[0010] The first and second dominant vibration frequencies are compared, as are the first and second amplitudes. If the first and second dominant vibration frequencies are the same and the first and second amplitudes are the same, then the mechanical components are troubleshooted; otherwise, the electrical system is troubleshooted.

[0011] In some embodiments, obtaining the vibration exceedance curve of the elevator car includes the following steps:

[0012] Vibration curves of each coordinate axis in the elevator car are collected using vibration sensors;

[0013] The vibration curves are analyzed to obtain several first vibration data points corresponding to each coordinate axis;

[0014] Based on the standard vibration data, determine whether several first vibration data corresponding to each coordinate axis meet the vibration standard. If there are first vibration data that do not meet the vibration standard, then the vibration curve of the corresponding coordinate axis in the first vibration data that does not meet the vibration standard is determined as the vibration exceeding standard curve.

[0015] In some embodiments, the frequency converter that disconnects the electrical system includes the following steps:

[0016] Disconnect the inverter from the main unit using the first contactor;

[0017] Disconnect the inverter from the braking resistor via the first contact component;

[0018] The frequency converter is connected to the main unit via a first contactor and to a braking resistor via a first contact assembly; the first contactor and the first contact assembly are used to control the on / off state of the frequency converter in the electrical system.

[0019] In some embodiments, prior to the step of energizing the elevator to release its brakes and allow the elevator to roll away, the method further includes the following steps:

[0020] Disconnect the star-sealed wiring of the three ports in the host through the third contactor;

[0021] The braking resistor is connected to three ports in the host in a star configuration via the second contact component.

[0022] In some embodiments, obtaining the vibration curves of each coordinate axis of the elevator car by adjusting the braking resistor includes the following steps:

[0023] Adjust the resistance value of the braking resistor so that the elevator's gliding speed reaches the rated speed and then maintains a constant speed;

[0024] Vibration curves of each coordinate axis during the uniform speed segment of the elevator trolley are collected using vibration sensors.

[0025] In some embodiments, determining whether the second vibration data corresponding to each coordinate axis conforms to the vibration standard based on standard vibration data includes the following steps:

[0026] Obtain the maximum and average values ​​of several second vibration data points corresponding to each coordinate axis;

[0027] The maximum value in the second vibration data is compared with the first and second preset values ​​in the standard vibration data, and the average value in the second vibration data is compared with the third and fourth preset values ​​in the standard vibration data.

[0028] If the maximum value corresponding to the X-axis and Y-axis in the second vibration data is within the first preset value range, or the average value corresponding to the X-axis and Y-axis in the second vibration data is within the third preset value range, then it is determined that the X-axis and Y-axis in the second vibration data meet the vibration standard.

[0029] If the maximum value corresponding to the Z-axis in the second vibration data is within the second preset value range, or the average value corresponding to the Z-axis in the second vibration data is within the fourth preset value range, then the Z-axis in the second vibration data is determined to meet the vibration standard.

[0030] In some embodiments, the method further includes the following steps:

[0031] Obtain the principal oscillation frequency corresponding to each mechanical component;

[0032] The main vibration frequency and the second vibration main vibration frequency of each mechanical component are compared to identify the mechanical component whose main vibration frequency is consistent with the second vibration main vibration frequency, and the mechanical component is then troubleshooted.

[0033] To achieve the above objectives, another aspect of this application proposes a fault diagnosis system for elevator vibration, the elevator vibration fault diagnosis system comprising:

[0034] The first module is used to obtain the vibration exceeding the standard curve of the elevator car, and to perform Fourier transform processing on the vibration exceeding the standard curve to obtain the first vibration principal frequency and the first amplitude.

[0035] The second module is used to disconnect the frequency converter of the electrical system, power on the elevator to release the brake so that the elevator can release the brake and run, and obtain the vibration curves of each coordinate axis during the elevator running.

[0036] The third module is used to analyze the vibration curve of the elevator car and obtain several secondary vibration data of the elevator car.

[0037] The fourth module is used to determine whether several second vibration data corresponding to each coordinate axis meet the vibration standard based on the standard vibration data. If all second vibration data meet the vibration standard, the electrical system is troubleshooted. If there are second vibration data that do not meet the vibration standard, the vibration curves of the corresponding coordinate axes of the second vibration data that do not meet the vibration standard are processed by Fourier transform to obtain the second vibration principal frequency and the second amplitude.

[0038] The fifth module is used to compare the first vibration main frequency and the second vibration main frequency, and to compare the first amplitude and the second amplitude. If the first vibration main frequency and the second vibration main frequency are the same and the first amplitude and the second amplitude are the same, then the mechanical component is checked for faults; otherwise, the electrical system is checked for faults.

[0039] To achieve the above objectives, another aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method described above.

[0040] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods described above.

[0041] The embodiments of this application include at least the following beneficial effects: This application provides a method, system, equipment, and medium for troubleshooting elevator vibration. The solution first obtains the first dominant vibration frequency and first amplitude of the vibration exceeding the standard curve in the elevator car; then disconnects the frequency converter of the electrical system to eliminate the influence of the electrical system on subsequent troubleshooting; next, power is applied to release the elevator brake and allow the elevator to run, obtaining the vibration curves of each coordinate axis in the elevator car, and further obtaining several second vibration data corresponding to each coordinate axis in the elevator car; then, the second vibration data are compared with standard vibration data to quickly determine the cause of the elevator vibration fault; finally, the first dominant vibration frequency and the second dominant vibration frequency are compared, as well as the first amplitude and the second amplitude, to further determine the cause of the elevator vibration fault. Compared to the traditional method of prioritizing troubleshooting the electrical system, which may lead to low troubleshooting efficiency, this solution only needs to obtain relevant vibration data to quickly determine the cause of the elevator vibration fault, without needing to use an elimination method to troubleshoot each component individually, greatly shortening the troubleshooting time; and the accuracy of the troubleshooting is also higher. Attached Figure Description

[0042] Figure 1This is a flowchart of the elevator vibration troubleshooting method provided in the embodiments of this application;

[0043] Figure 2 yes Figure 1 The flowchart preceding step S101;

[0044] Figure 3 yes Figure 1 The flowchart of step S102 in the document;

[0045] Figure 4 yes Figure 1 The flowchart preceding step S102;

[0046] Figure 5 yes Figure 1 Another flowchart of step S102 in the process;

[0047] Figure 6 yes Figure 1 The flowchart of step S104 in the process;

[0048] Figure 7 This is another flowchart of the elevator vibration troubleshooting method provided in the embodiments of this application;

[0049] Figure 8 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application;

[0050] Figure 9 This is a circuit connection diagram of a fault diagnosis method for elevator vibration provided in an embodiment of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of systems and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0052] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0054] Please see Figure 1 This is an optional flowchart of the elevator vibration troubleshooting method provided in the embodiments of this application. Figure 1 The method may include, but is not limited to, steps S101 to S105.

[0055] Step S101: Obtain the vibration exceeding standard curve of the elevator car, perform Fourier transform processing on the vibration exceeding standard curve to obtain the first vibration principal frequency and the first amplitude.

[0056] Step S102: Disconnect the frequency converter of the electrical system, turn on the power to release the elevator brake so that the elevator can release the brake and run away, and obtain the vibration curve of each coordinate axis of the elevator running away by adjusting the braking resistor.

[0057] Step S103: Analyze the vibration curves of each coordinate axis to obtain several second vibration data of the elevator car slippage.

[0058] Step S104: Based on the standard vibration data, determine whether several second vibration data corresponding to each coordinate axis meet the vibration standard. If all second vibration data meet the vibration standard, troubleshoot the electrical system. If there are second vibration data that do not meet the vibration standard, perform Fourier transform processing on the vibration curves of the corresponding coordinate axes in the second vibration data that do not meet the vibration standard to obtain the second vibration principal frequency and the second amplitude.

[0059] Step S105: Compare the first and second dominant vibration frequencies, and compare the first and second amplitudes. If the first and second dominant vibration frequencies are the same and the first and second amplitudes are the same, then troubleshoot the mechanical components; otherwise, troubleshoot the electrical system.

[0060] In step S101 of some embodiments, the vibration exceeding standard curve refers to the curve obtained when the elevator has a vibration problem. At this time, the obtained vibration exceeding standard curve has the intervention of the frequency converter of the electrical system.

[0061] Please see Figure 9 In step S102 of some embodiments, the brake can be energized and released by the fifth contactor so that the elevator can release the brake and run away.

[0062] Among them, the brake is Figure 9 The fifth contactor is 150. Figure 9 K5.

[0063] In step S103 of some embodiments, the second vibration data is the acceleration corresponding to the vibration curve of each coordinate axis. The process of obtaining the second vibration data is as follows: obtain the two coordinates corresponding to the vibration curve of each coordinate axis, and then calculate the slope of the vibration curve according to the acceleration formula and the two coordinates. The slope is the acceleration corresponding to the vibration curve (i.e., the second vibration data).

[0064] In step S104 of some embodiments, if all the second vibration data meet the vibration standard, it indicates that the elevator vibration is caused by the frequency converter and the electrical system needs to be troubleshooted; otherwise, the second vibration data needs to be further processed to determine the cause of the elevator malfunction.

[0065] In step S105 of some embodiments, since the inverter of the electrical system has been disconnected after obtaining the first dominant vibration frequency and the first amplitude, the obtained second dominant vibration frequency and the second amplitude are without the intervention of the electrical system. By comparing the first dominant vibration frequency and the second dominant vibration frequency, and by comparing the first amplitude and the second amplitude, it can be determined whether the elevator vibration is related to the electrical system. That is, if the first dominant vibration frequency and the second dominant vibration frequency are the same, and the first amplitude and the second amplitude are the same, it indicates that the elevator vibration is caused by mechanical components, and the mechanical components need to be troubleshooted; otherwise, the electrical system needs to be troubleshooted.

[0066] Steps S101 to S105 shown in this embodiment of the application, compared with the traditional method of prioritizing the troubleshooting of the electrical system, which may lead to low troubleshooting efficiency, this application can quickly determine the cause of elevator vibration simply by obtaining relevant vibration data, and there is no need to use the elimination method to troubleshoot each component one by one, which greatly shortens the troubleshooting time and improves the accuracy of troubleshooting.

[0067] Please see Figure 2In some embodiments, obtaining the vibration exceedance curve of the elevator car in step S101 may include, but is not limited to, steps S201 to S203:

[0068] Step S201: Vibration curves of each coordinate axis in the elevator car are collected using vibration sensors;

[0069] Step S202: Analyze the vibration curve to obtain several first vibration data corresponding to each coordinate axis;

[0070] Step S203: Based on the standard vibration data, determine whether several first vibration data corresponding to each coordinate axis meet the vibration standard. If there are first vibration data that do not meet the vibration standard, then determine the vibration curve of the corresponding coordinate axis in the first vibration data that does not meet the vibration standard as the vibration exceeding standard curve.

[0071] In step S201 of some embodiments, vibration curves of the X, Y, and Z axes can be acquired using a triaxial vibration sensor. The triaxial vibration sensor can be installed as an external component in the elevator, or it can be a standard component of the elevator and placed at the bottom of the car.

[0072] In step S202 of some embodiments, the maximum value and average value of a plurality of first vibration data corresponding to the X-axis, Y-axis and Z-axis are obtained respectively. The first vibration data are the accelerations of the vibration curves corresponding to the X-axis, Y-axis and Z-axis.

[0073] In step S203 of some embodiments, if the maximum value corresponding to the X-axis in the first vibration data is > 0.2 m / s 2 Alternatively, the average value corresponding to the X-axis in the first vibration data is greater than 0.15 m / s². 2 If the X-axis vibration curve is above the limit, it indicates that the vibration curve exceeds the standard; if the maximum value corresponding to the Y-axis in the first vibration data is >0.2 m / s 2 Alternatively, the average value corresponding to the Y-axis in the first vibration data is >0.15 m / s². 2 If the vibration curve along the Y-axis exceeds the standard, it indicates that the vibration curve exceeds the standard. If the maximum value corresponding to the Z-axis in the first vibration data is >0.3 m / s 2 Alternatively, the average value corresponding to the Z-axis in the first vibration data is >0.2 m / s. 2 If so, it indicates that the vibration curve along the Z-axis is a vibration exceeding the standard. By comparing the vibration data, the coordinate axis where the vibration exceeds the standard can be identified.

[0074] It is understood that the process of determining the vibration exceeding the standard curve in this embodiment of the invention is consistent with the subsequent judgment criteria for whether the second vibration data meets the vibration standard, and both are judged using standard vibration data. The difference is that the first vibration data used in determining the vibration exceeding the standard curve involves the intervention of the frequency converter of the electrical system, while the second vibration data used in judging the second vibration data does not involve the intervention of the frequency converter of the electrical system (i.e., the frequency converter has been disconnected).

[0075] Therefore, by comparing the first and second dominant vibration frequencies and comparing the first and second amplitudes (wherein the first dominant vibration frequency and the first amplitude are obtained from the first vibration data, and the second dominant vibration frequency and the second amplitude are obtained from the second vibration data), it is possible to determine whether the elevator vibration is related to the electrical system.

[0076] Steps S201 to S203, as shown in the embodiments of this application, can determine the vibration exceeding the standard curve by comparing several vibration data with standard vibration data, laying the foundation for subsequent fault diagnosis.

[0077] Please see Figure 3 and Figure 9 In some embodiments, disconnecting the frequency converter of the electrical system in step S102 may include, but is not limited to, steps S301 to S302:

[0078] Step S301: Disconnect the inverter from the host unit via the first contactor;

[0079] Step S302: Disconnect the inverter from the braking resistor via the first contact assembly;

[0080] The frequency converter is connected to the main unit via a first contactor and to a braking resistor via a first contact assembly; the first contactor and the first contact assembly are used to control the on / off state of the frequency converter in the electrical system.

[0081] In step S301 of some embodiments, the host is the core device for controlling the operation of the elevator, mainly used to control the elevator's ascent and descent, and to ensure the safety and stability of the elevator's operation.

[0082] in, Figure 9 K1 represents the first contactor, which disconnects the main unit (i.e., Figure 9 120 in the middle) and frequency converter (i.e. Figure 9 The connection of U, V and W in 160).

[0083] In step S302 of some embodiments, specifically, the first contact assembly includes a second contactor K2, a sixth contactor K6, and a seventh contactor K7. The contactors in the first contactor assembly are controlled simultaneously, and their contacts operate simultaneously. In this embodiment of the invention, the inverter is disconnected from the braking resistor (i.e.,...) via the first contact assembly. Figure 9 The connection of 170 in the middle.

[0084] In steps S301 to S302 of the embodiments of this application, the frequency converter of the electrical system is disconnected by the first contactor and the first contact component to eliminate the influence of the electrical system on subsequent fault diagnosis.

[0085] Please see Figure 4 and Figure 9 In some embodiments, before step S102, which involves energizing the elevator brake to release it and allow the elevator to roll away, steps S401 to S402 may be included, but are not limited to:

[0086] Step S401: Disconnect the star-sealing wiring of the three ports in the host through the third contactor;

[0087] In step S402, the braking resistor is connected to the three ports of the host in a star configuration via the second contact component.

[0088] In step S401 of some embodiments, Figure 9 K3 in the middle represents the third contactor, which can be used to connect the main unit (i.e., Figure 9 Disconnect the star-sealing wiring in 120), that is, disconnect the star-sealing wiring of the U, V and W ports of the host connected to the third contactor.

[0089] In step S402 of some embodiments, a star connection refers to connecting one end of each phase winding to a single point, with their other ends serving as leads, forming three phase lines. In a star connection, the line voltage is the square root of three times the phase voltage, while the line current equals the phase current. Furthermore, a star connection can reduce the starting current.

[0090] Specifically, the second contact assembly includes a fourth contactor K4 and an eighth contactor K8, through which the braking resistor (i.e., Figure 9 The 170 in the middle is connected to the three ports U, V and W in the host in a star connection. Among them, the contactors in the second contact assembly are controlled simultaneously, and the contacts act simultaneously.

[0091] In steps S401 to S402 of the embodiments of this application, the braking resistor is connected to the elevator host in a star connection through the third contactor and the second contact component, so that the braking resistor serves as the sliding resistance when the elevator car is sliding, which facilitates subsequent adjustment of the elevator sliding speed and acquisition of the vibration curve of the elevator sliding.

[0092] Please see Figure 5 In some embodiments, obtaining the vibration curves of each coordinate axis of the elevator car in step S102 by adjusting the braking resistor may include, but is not limited to, steps S501 to S502:

[0093] Step S501: Adjust the resistance value of the braking resistor so that the elevator's gliding speed reaches the rated speed and remains at a constant speed.

[0094] Step S502: The vibration curves of each coordinate axis of the elevator car during the uniform speed segment are collected by the vibration sensor.

[0095] In step S501 of some embodiments, the braking resistor is used to brake the elevator during normal operation; however, during troubleshooting, the braking resistor is used as a tripping resistor for the elevator car, which can adjust the tripping speed of the elevator. In this step, the braking resistor is used for troubleshooting, i.e., as a tripping resistor.

[0096] Specifically, when the braking resistor is used as the slip resistance, the resistance value needs to be determined in conjunction with the elevator's parameters.

[0097] Assume the rated power of the host is P, the rated current is I, and the power factor is... If the no-load upward current is I1, then the rolling resistance R is:

[0098]

[0099] Where E is the phase electromotive force.

[0100] The resistance power P of the sliding car is:

[0101] P = I1 * I1 * R;

[0102] The braking resistor is used to discharge energy when the elevator is descending unloaded. The operating conditions are close to the rated speed of the elevator. Since the braking resistor is connected to the bus voltage and has only two terminals, a fixed speed needs to be achieved. However, the resistance value is fixed. Therefore, the power of the braking resistor must be guaranteed at the same time when the resistance is fixed, otherwise a malfunction may occur.

[0103] Furthermore, in this embodiment of the invention, the braking resistor can be an adjustable sliding rheostat, and the elevator's gliding speed can be controlled by adjusting the sliding rheostat (i.e., adjusting the resistance value of the braking resistor).

[0104] When it is necessary to control the elevator's trolley speed, assuming the trolley speed is x% of the rated speed, then the trolley resistance is: R2 = R * x%; the trolley resistance power is: P2 = P * x%.

[0105] Steps S501 to S502, as shown in the embodiments of this application, adjust the resistance value of the braking resistor to control the elevator's running speed and facilitate the acquisition of the elevator's running vibration curve, laying a foundation for subsequent fault diagnosis.

[0106] Please see Figure 6 In some embodiments, the step S104, which determines whether several second vibration data points corresponding to each coordinate axis conform to the vibration standard based on the standard vibration data, may include, but is not limited to, steps S601 to S604:

[0107] Step S601: Obtain the maximum value and average value of several second vibration data corresponding to each coordinate axis;

[0108] Step S602: Compare the maximum value in the second vibration data with the first and second preset values ​​in the standard vibration data, and compare the average value in the second vibration data with the third and fourth preset values ​​in the standard vibration data.

[0109] Step S603: If the maximum value corresponding to the X-axis and Y-axis in the second vibration data is within the first preset value range, or the average value corresponding to the X-axis and Y-axis in the second vibration data is within the third preset value range, then it is determined that the X-axis and Y-axis in the second vibration data meet the vibration standard.

[0110] Step S604: If the maximum value corresponding to the Z-axis in the second vibration data is within the range of the second preset value, or the average value corresponding to the Z-axis in the second vibration data is within the range of the fourth preset value, then it is determined that the Z-axis in the second vibration data meets the vibration standard.

[0111] In step S601 of some embodiments, the maximum value and average value of several second vibration data corresponding to the X-axis, Y-axis and Z-axis are obtained respectively.

[0112] In step S602 of some embodiments, the first preset value is 0.2 m / s 2 The second preset value is 0.3 m / s 2 The third preset value is 0.15 m / s 2 The fourth preset value is 0.2 m / s 2 .

[0113] In step S603 of some embodiments, if the maximum value corresponding to the X-axis in the second vibration data is <0.2 m / s 2 The average value corresponding to the X-axis in the first preset value or the second vibration data is <0.15m / s. 2 If the third preset value is met, it indicates that the X-axis meets the vibration standard. Conversely, if the value is not met, it indicates that the X-axis does not meet the vibration standard. If the maximum value of the Y-axis in the second vibration data is <0.2 m / s2 The average value corresponding to the Y-axis in the first preset value or the second vibration data is <0.15m / s. 2 If the value is the third preset value, it means that the Y-axis meets the vibration standard. Otherwise, it means that the Y-axis does not meet the vibration standard.

[0114] In step S604 of some embodiments, if the maximum value corresponding to the Z-axis in the second vibration data is <0.3 m / s 2 (Second preset value) or the average value corresponding to the Z-axis in the second vibration data is <0.2m / s 2 If the value is set to the fourth preset value, it indicates that the Z-axis meets the vibration standard. Otherwise, it indicates that the Z-axis does not meet the vibration standard.

[0115] Steps S601 to S604, as shown in the embodiments of this application, can preliminarily determine the cause of elevator vibration failure by comparing the second vibration data (maximum value and average value) with standard vibration data.

[0116] Please see Figure 7 In some embodiments, the method for troubleshooting elevator vibration may include, but is not limited to, steps S701 to S702:

[0117] Step S701: Obtain the main vibration frequency corresponding to each mechanical component;

[0118] Step S702: Compare the main vibration frequency and the second vibration main vibration frequency of each mechanical component to determine the mechanical component whose main vibration frequency is consistent with the second vibration main vibration frequency, and troubleshoot the mechanical component.

[0119] In step S701 of some embodiments, mechanical components include, but are not limited to, traction sheaves, guide sheaves, car top sheaves, and counterweight sheaves.

[0120] In step S702 of some embodiments, the main vibration frequency and the second vibration main vibration frequency corresponding to each mechanical component are compared. If the main vibration frequency and the second vibration main vibration frequency of a certain mechanical component are the same, it indicates that the mechanical component is causing the elevator vibration, and the mechanical component needs to be troubleshooted.

[0121] Steps S701 to S702 shown in this embodiment of the application, by pre-acquiring the main vibration frequency corresponding to each mechanical component and comparing the corresponding main vibration frequency with the second vibration main vibration frequency one by one, can further determine the specific mechanical component of the elevator fault, and at the same time, can specifically troubleshoot the corresponding mechanical component, thereby improving the efficiency of elevator fault troubleshooting.

[0122] This application embodiment also provides a fault diagnosis system for elevator vibration, which can implement the above-mentioned fault diagnosis method for elevator vibration. The system includes:

[0123] The first module is used to obtain the vibration exceeding the standard curve of the elevator car, and to perform Fourier transform processing on the vibration exceeding the standard curve to obtain the first vibration principal frequency and the first amplitude.

[0124] The second module is used to disconnect the frequency converter of the electrical system, power on the elevator to release the brake so that the elevator can release the brake and run, and obtain the vibration curves of each coordinate axis during the elevator running.

[0125] The third module is used to analyze the vibration curve of the elevator car and obtain several secondary vibration data of the elevator car.

[0126] The fourth module is used to determine whether several second vibration data corresponding to each coordinate axis meet the vibration standard based on the standard vibration data. If all second vibration data meet the vibration standard, the electrical system is troubleshooted. If there are second vibration data that do not meet the vibration standard, the vibration curves of the corresponding coordinate axes of the second vibration data that do not meet the vibration standard are processed by Fourier transform to obtain the second vibration principal frequency and the second amplitude.

[0127] The fifth module is used to compare the first and second dominant vibration frequencies, as well as the first and second amplitudes. If the first and second dominant vibration frequencies are the same and the first and second amplitudes are the same, then the mechanical components are checked for faults; otherwise, the electrical system is checked for faults.

[0128] It is understood that the content of the above method embodiments is applicable to this system embodiment. The specific functions implemented in this system embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0129] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the aforementioned fault warning method for the elevator door lock contact switch. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0130] It is understood that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented by this device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0131] Please see Figure 8 , Figure 8The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes:

[0132] The processor 801 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0133] The memory 802 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 802 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 802 and is called by the processor 801 to execute the fault warning method for the elevator door lock contact switch according to the embodiments of this application.

[0134] The 803 input / output interface is used to implement information input and output.

[0135] The communication interface 804 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0136] Bus 805 transmits information between various components of the device (e.g., processor 801, memory 802, input / output interface 803, and communication interface 804);

[0137] The processor 801, memory 802, input / output interface 803, and communication interface 804 are connected to each other within the device via bus 805.

[0138] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for troubleshooting elevator vibration.

[0139] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0140] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0141] Please see Figure 9 The following will combine Figure 9 The method for troubleshooting elevator vibration provided in this embodiment of the invention is further explained.

[0142] U, V, and W are the three ports of the elevator main unit; K1 is the first contactor, K2 is the second contactor, K3 is the third contactor, K4 is the fourth contactor, K5 is the fifth contactor, K6 is the sixth contactor, K7 is the seventh contactor, and K8 is the eighth contactor.

[0143] It should be noted that the second contactor K2, the sixth contactor K6, and the seventh contactor K7 together form the first contact assembly; the fourth contactor K4 and the eighth contactor K8 together form the second contact assembly. The contactors in the first and second contactor assemblies are controlled simultaneously, and the contacts operate at the same time.

[0144] Specifically, 100 is the elevator car, 110 is the triaxial vibration sensor, 120 is the frequency converter, 130 is the main board, 140 is the brake power supply, 150 is the brake, 160 is the main unit, and 170 is the braking resistor. In addition, Figure 9 A normally closed switch means that it is normally closed under normal conditions, and becomes normally open when energized.

[0145] This embodiment first collects vibration curves of each coordinate axis (X, Y, and Z axes) in the elevator car using a triaxial vibration sensor and sends the vibration curves to the main board (the main board is mainly used to connect the frequency converter and control the elevator's peripheral components; here it also serves as a data processing module; an external data processing module can also be connected, and this embodiment does not limit this). Then, the main board obtains several first vibration data points based on the vibration curves and compares them with standard vibration data to determine the vibration exceeding the standard curve. Next, it obtains the first dominant vibration frequency and first amplitude of the vibration exceeding the standard curve. Then, it disconnects the main unit from the frequency converter via the first contactor and disconnects the braking resistor from the frequency converter via the first contact assembly to eliminate the influence of the frequency converter in the electrical system on subsequent fault diagnosis. Next, it disconnects the original star connection of the U, V, and W ports in the elevator main unit via the third contactor and connects the braking resistor to the U, V, and W ports in the elevator main unit via the second contact assembly in a star connection. Finally, it energizes the brake via the fifth contactor to open the brake, allowing the elevator to run. At this time, the elevator will first accelerate and then maintain a constant speed after reaching the rated speed. The elevator's rated speed is written to the mainboard, which is connected to the encoder. The elevator speed during the tumbling process can be obtained through the encoder. Then, a three-axis vibration sensor collects vibration curves for each axis of the elevator during the constant speed segment and transmits them to the mainboard. The mainboard further obtains several second vibration data points based on the acquired vibration curves and compares them with standard vibration data. If all second vibration data meet the vibration standard, the elevator vibration is caused by the frequency converter, requiring troubleshooting of the electrical system. Otherwise, the second vibration data needs further processing to obtain the corresponding second dominant vibration frequency and second amplitude. Finally, by comparing the first and second dominant vibration frequencies, and comparing the first and second amplitudes, if the first and second dominant vibration frequencies and amplitudes are the same, the elevator vibration is caused by mechanical components, requiring troubleshooting of the mechanical components. Otherwise, troubleshooting of the electrical system is required.

[0146] The elevator vibration troubleshooting method, system, electronic equipment, and storage medium provided in this application embodiment acquire the first dominant vibration frequency and first amplitude of the vibration exceeding the standard curve in the elevator car; then disconnect the frequency converter of the electrical system to eliminate the influence of the electrical system on subsequent troubleshooting; then power is applied to release the elevator brake and allow the elevator to run, acquiring the vibration curves of each coordinate axis in the elevator car, and further acquiring several second vibration data corresponding to each coordinate axis in the elevator car; then the second vibration data are compared with standard vibration data to quickly determine the cause of the elevator vibration fault; finally, the first dominant vibration frequency and the second dominant vibration frequency, as well as the first amplitude and the second amplitude, are compared to determine the cause of the elevator vibration fault again. Compared with the traditional method of prioritizing fault investigation of the electrical system, which may lead to low fault investigation efficiency, this solution can quickly determine the cause of elevator vibration faults by acquiring relevant vibration data, without the need to use the elimination method to troubleshoot each component individually, greatly shortening the fault investigation time; and the accuracy of fault investigation is also higher.

[0147] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0148] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0149] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0150] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0151] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for troubleshooting elevator vibration, characterized in that, The method includes the following steps: Obtain the vibration exceedance curve of the elevator car, and perform Fourier transform processing on the vibration exceedance curve to obtain the first dominant vibration frequency and the first amplitude; Disconnect the frequency converter of the electrical system, turn on the power to release the elevator brake so that the elevator can release the brake and run away, and obtain the vibration curves of each coordinate axis of the elevator running away by adjusting the braking resistor. By analyzing the vibration curves of each coordinate axis, several secondary vibration data of the elevator car slippage were obtained; Based on the standard vibration data, determine whether several second vibration data corresponding to each coordinate axis meet the vibration standard. If all second vibration data meet the vibration standard, troubleshoot the electrical system. If there are second vibration data that do not meet the vibration standard, perform Fourier transform on the vibration curve of the corresponding coordinate axis in the second vibration data that does not meet the vibration standard to obtain the second vibration principal frequency and the second amplitude. The first and second dominant vibration frequencies are compared, as are the first and second amplitudes. If the first and second dominant vibration frequencies are the same and the first and second amplitudes are the same, then the mechanical components are troubleshooted; otherwise, the electrical system is troubleshooted.

2. The method according to claim 1, characterized in that, The process of obtaining the vibration exceedance curve of the elevator car includes the following steps: Vibration curves of each coordinate axis in the elevator car are collected using vibration sensors; The vibration curves are analyzed to obtain several first vibration data points corresponding to each coordinate axis; Based on the standard vibration data, determine whether several first vibration data corresponding to each coordinate axis meet the vibration standard. If there are first vibration data that do not meet the vibration standard, then the vibration curve of the corresponding coordinate axis in the first vibration data that does not meet the vibration standard is determined as the vibration exceeding standard curve.

3. The method according to claim 1, characterized in that, The frequency converter that disconnects the electrical system includes the following steps: Disconnect the inverter from the main unit using the first contactor; Disconnect the inverter from the braking resistor via the first contact component; The frequency converter is connected to the main unit via a first contactor and to a braking resistor via a first contact assembly; the first contactor and the first contact assembly are used to control the on / off state of the frequency converter in the electrical system.

4. The method according to claim 1, characterized in that, Before the step of energizing the elevator to release its brakes and allow the elevator to roll away, the method further includes the following steps: Disconnect the star-sealed wiring of the three ports in the host through the third contactor; The braking resistor is connected to three ports in the host in a star configuration via the second contact component.

5. The method according to claim 1, characterized in that, The method of obtaining the vibration curves of each coordinate axis during elevator trolley movement by adjusting the braking resistor includes the following steps: Adjust the resistance value of the braking resistor so that the elevator's gliding speed reaches the rated speed and then maintains a constant speed; Vibration curves of each coordinate axis during the uniform speed segment of the elevator trolley are collected using vibration sensors.

6. The method according to claim 1, characterized in that, The step of determining whether several second vibration data points corresponding to each coordinate axis conform to the vibration standard based on standard vibration data includes the following steps: Obtain the maximum and average values ​​of several second vibration data points corresponding to each coordinate axis; The maximum value in the second vibration data is compared with the first and second preset values ​​in the standard vibration data, and the average value in the second vibration data is compared with the third and fourth preset values ​​in the standard vibration data. If the maximum value corresponding to the X-axis and Y-axis in the second vibration data is within the first preset value range, or the average value corresponding to the X-axis and Y-axis in the second vibration data is within the third preset value range, then it is determined that the X-axis and Y-axis in the second vibration data meet the vibration standard. If the maximum value corresponding to the Z-axis in the second vibration data is within the second preset value range, or the average value corresponding to the Z-axis in the second vibration data is within the fourth preset value range, then the Z-axis in the second vibration data is determined to meet the vibration standard.

7. The method according to claim 1, characterized in that, The method further includes the following steps: Obtain the principal oscillation frequency corresponding to each mechanical component; The main vibration frequency and the second vibration main vibration frequency of each mechanical component are compared to identify the mechanical component whose main vibration frequency is consistent with the second vibration main vibration frequency, and the mechanical component is then troubleshooted.

8. A fault diagnosis system for elevator vibration, characterized in that, The elevator vibration troubleshooting system includes: The first module is used to obtain the vibration exceeding the standard curve of the elevator car, and to perform Fourier transform processing on the vibration exceeding the standard curve to obtain the first vibration principal frequency and the first amplitude. The second module is used to disconnect the frequency converter of the electrical system, power on the elevator to release the brake so that the elevator can release the brake and run, and obtain the vibration curves of each coordinate axis during the elevator running. The third module is used to analyze the vibration curve of the elevator car and obtain several secondary vibration data of the elevator car. The fourth module is used to determine whether several second vibration data corresponding to each coordinate axis conform to the vibration standard based on the standard vibration data. If all second vibration data conform to the vibration standard, the electrical system is troubleshooted. If there are second vibration data that do not conform to the vibration standard, the vibration curves of the corresponding coordinate axes of the second vibration data that do not conform to the vibration standard are processed by Fourier transform to obtain the second vibration principal frequency and the second amplitude. The fifth module is used to compare the first vibration main frequency and the second vibration main frequency, and to compare the first amplitude and the second amplitude. If the first vibration main frequency and the second vibration main frequency are the same and the first amplitude and the second amplitude are the same, then the mechanical component is checked for faults; otherwise, the electrical system is checked for faults.

9. An electronic device, characterized in that, include: At least one processor; At least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the method as described in any one of claims 1-7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 7.

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