Fault diagnosis and positioning method and device of cut tobacco production line control circuit and storage medium

Abstract

The invention provides a fault diagnosis and positioning method and device for a cut tobacco production line control circuit and a storage medium. The method comprises the following steps: acquiring a topological structure of a to-be-detected cut-tobacco production line control circuit and current data corresponding to each branch; a diagnosis module is selected through the SITOP, and whether faults exist in the branches or not is judged according to the current data of the branches and preset current thresholds corresponding to the branches; wherein the preset current threshold value of each branch is determined according to the control function executed by each branch and the operation mode of the corresponding equipment; and if the fault exists, a diagnosis module is selected through the SITOP, and the fault branch is positioned according to the topological structure. The current threshold value corresponding to each branch circuit is adjusted according to the control function executed by each branch circuit and the operation mode of the corresponding equipment, so that the diagnosis module is selected through the SITOP, and when the current of each branch circuit exceeds the corresponding preset current threshold value, the fault branch circuit is positioned in time and the power-off processing is carried out, thereby improving the reliability of the system. Therefore, normal production is not affected.

Description

Technical Field

[0001] The present invention relates to the field of intelligent monitoring technology, and in particular to a fault diagnosis and positioning method, device and storage medium for a silk thread control circuit. Background Art

[0002] As a key link in the tobacco production line, the stability and reliability of its control circuit are crucial to the entire production process. With the development of industrial automation technology, the control circuit of the silk-making line is becoming increasingly complex, involving a variety of electrical equipment and sensors, which requires us to have effective fault detection and location technology to ensure production efficiency and product quality.

[0003] Traditional fault detection methods, such as manual inspections, voltage and current measurements, etc., have problems such as low efficiency, poor accuracy, and inability to monitor in real time. With the development of technology, some automated detection technologies have emerged. Through automated detection technologies, faults in control lines can be quickly identified, fault points can be located in a timely manner, and power can be cut off in time for faulty lines. To achieve this function, it is necessary to accurately set an accurate power-off threshold. However, at this stage, most of them use a unified threshold, which makes it impossible to accurately judge the power-off demand in most cases, affecting normal production activities. Summary of the invention

[0004] The embodiments of the present invention provide a method, device and storage medium for fault diagnosis and positioning of a silk thread control circuit, so as to solve the problem that the fault types that can be identified by the current automated detection technology are limited.

[0005] In a first aspect, an embodiment of the present invention provides a method for diagnosing and locating a fault of a silk-making line control circuit, comprising:

[0006] Obtain the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch;

[0007] Select the diagnostic module through SITOP, and judge whether each branch has a fault according to the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding equipment;

[0008] If there is a fault, the SITOP diagnostic module is selected to locate the faulty branch according to the topology.

[0009] In a possible implementation, the preset current threshold of each branch is determined by:

[0010] Determine the current threshold influencing parameter corresponding to each branch according to the control function performed by each branch;

[0011] The preset current threshold of each branch is determined according to the current threshold influencing parameters corresponding to each branch and the operation mode of the equipment in each branch.

[0012] In a possible implementation, the devices controlled by each branch include: roller type equipment, vibrating tank type equipment, conveyor belt type equipment, cigarette pack and cigarette box conveying equipment, fan and silencer, control motor of inverter and soft starter, and non-speed regulating motor;

[0013] According to the control function performed by each branch, the current threshold influencing parameters corresponding to each branch are determined, including:

[0014] Perform the following steps for any branch:

[0015] If the branch is used to control roller-type equipment, the current threshold influencing parameters corresponding to the branch include the rated current and load characteristics of each roller-type equipment;

[0016] If the branch is used to control a vibrating tank-type device, the current threshold influencing parameters corresponding to the branch include the vibration frequency, vibration amplitude, material weight and transmission distance of each vibrating tank-type device;

[0017] If the branch is used to control conveyor belt equipment, the current threshold influencing parameters corresponding to the branch include the length, inclination and load weight of the conveyor belt;

[0018] If the branch is used to control cigarette pack and cigarette box conveying equipment, the current threshold influencing parameters corresponding to the branch include conveying speed and load weight;

[0019] If the branch is used to control the fan and the muffler, the current threshold influencing parameters corresponding to the branch include the power and use efficiency of the fan and the muffler;

[0020] If the branch is used to control the control motor of the frequency converter and the soft starter, the current threshold influencing parameter corresponding to the branch includes the current impact intensity of the control motor starting;

[0021] If the branch is used to control a non-speed regulating motor, the current threshold influencing parameter corresponding to the branch includes the rated current of the non-speed regulating motor.

[0022] In a possible implementation, the preset current threshold of each branch is determined according to the current threshold influencing parameter corresponding to each branch and the operation mode of the device in each branch, including:

[0023] According to the current threshold influencing parameters corresponding to each branch, the initial preset current threshold is adjusted to obtain an adjusted initial preset current threshold;

[0024] Determine the current threshold standard value of each branch according to the operation mode of the equipment in each branch;

[0025] According to the current threshold standard value of each branch, the adjusted initial preset current threshold of each branch is corrected to obtain the preset current threshold of each branch.

[0026] In a possible implementation, the method further includes:

[0027] Determine the vibration signal according to the current data corresponding to the fault branch;

[0028] According to the vibration signal, the fault type corresponding to the fault branch is determined.

[0029] In a possible implementation, determining the vibration signal according to current data corresponding to the fault branch includes:

[0030] Extract features from the current data corresponding to the fault branch to obtain current harmonic features;

[0031] Based on the current harmonic characteristics, the vibration signal is determined.

[0032] In a possible implementation, determining the fault type corresponding to the fault branch according to the vibration signal includes:

[0033] Extract the spectrum, phase and amplitude of the vibration signal;

[0034] The fault type corresponding to the fault branch is determined based on the frequency spectrum, phase and amplitude of the vibration signal.

[0035] In a second aspect, an embodiment of the present invention provides a fault diagnosis and positioning device for a silk thread control circuit, comprising:

[0036] An acquisition module is used to acquire the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch;

[0037] A diagnostic module, which is used to select a diagnostic module through SITOP, and judge whether each branch has a fault according to the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding equipment;

[0038] The positioning module is used to locate the faulty branch according to the topology structure by selecting the diagnostic module through SITOP if there is a fault.

[0039] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the processor implements the steps of the method described in the first aspect or any possible implementation manner of the first aspect.

[0040] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect or any possible implementation of the first aspect are implemented.

[0041] The embodiments of the present invention provide a fault diagnosis and positioning method, device and storage medium for a silk thread control circuit. Compared with the traditional method of using a unified current threshold for fault judgment, in order to achieve accurate judgment, this embodiment takes into account that the current thresholds are different when the operating modes of equipment in different branches are different, and when the control functions corresponding to each branch are different, it means that the types of equipment corresponding to the control are different. In this case, the current threshold corresponding to each branch must also be different. Based on these two points, this embodiment adjusts the current threshold corresponding to each branch according to the control function performed by each branch and the operating mode of the corresponding equipment, so as to monitor each branch in real time through the SITOP selection diagnosis module. When the current of each branch exceeds the corresponding preset current threshold, the faulty branch is located in time and the power is cut off to ensure that normal production is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 It is a flow chart of the implementation of the fault diagnosis and positioning method of the silk-making line control circuit provided by the embodiment of the present invention;

[0044] Figure 2 It is a hierarchical decomposition diagram of a control circuit of a silk-making line control circuit fault diagnosis and positioning method provided by an embodiment of the present invention;

[0045] Figure 3 It is a structural schematic diagram of a fault diagnosis and positioning device for a silk-making line control circuit provided by an embodiment of the present invention;

[0046] Figure 4 is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0049] Figure 1 FIG. 1 is a flowchart of a method for diagnosing and locating a fault in a silk-making wire control circuit according to an embodiment of the present invention. Figure 1 As shown, the method may include:

[0050] Step 110: Obtain the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch.

[0051] In this embodiment, the topological structure of the control circuit of the silk-making line to be detected can be constructed according to the control function performed by the control circuit. The constructed topological structure includes each operating device in the silk-making line, the control device of each operating device, and the connection and operation relationship between each device.

[0052] Step 120: Select the diagnostic module through SITOP, and determine whether each branch has a fault based on the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operating mode of the corresponding equipment.

[0053] In this embodiment, SITOP Selective Diagnosis Module is the name of a power supply product series of Siemens. "Selective diagnosis" means that the module has a selective diagnosis function. SITOP Selective Diagnosis Module can monitor the current of each branch. When the branch current exceeds the set threshold, the module will identify it as an overload and selectively close the faulty branch to protect other branches from being affected. This mechanism allows for rapid diagnosis of faults and minimizes downtime.

[0054] Taking this into consideration, in this embodiment, when performing fault diagnosis and fault location on the silk-making wire control circuit to be detected, a SITOP selection diagnosis module is introduced to perform diagnosis and corresponding location.

[0055] Figure 2: is a hierarchical decomposition diagram of the control circuit of the silk thread control circuit provided by the embodiment of the present invention, such as Figure 2 As shown, in this embodiment, the control circuit can be classified according to the control function performed by the control circuit, and the total control circuit includes multiple secondary branch circuits, each secondary branch circuit includes sub-branch circuits, and each sub-branch circuit corresponds to multiple terminal components.

[0056] The SITOP selection diagnosis module determines whether there is a fault in each branch by judging whether the current of each branch is greater than the preset current threshold corresponding to each branch.

[0057] If it is determined that the current of any branch is greater than the preset current threshold corresponding to the branch, it is determined that a fault exists in the branch.

[0058] If it is determined that the current of any branch is not greater than the preset current threshold corresponding to the branch, it is determined that there is no fault in the branch.

[0059] In this embodiment, in order to improve the accuracy of fault branch judgment, the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding device. The following is an optional embodiment to illustrate how the preset current threshold of each branch is determined:

[0060] S100: Determine a current threshold influencing parameter corresponding to each branch according to the control function executed by each branch.

[0061] S200: Determine a preset current threshold of each branch according to the current threshold influencing parameter corresponding to each branch and the operation mode of the device in each branch.

[0062] In an optional embodiment, the equipment controlled by each branch includes: roller-type equipment, vibration trough-type equipment, conveyor belt-type equipment, cigarette pack and cigarette box conveying equipment, fans and silencers, control motors of frequency converters and soft starters, and non-speed-regulating motors.

[0063] In S100, according to the control function executed by each branch, the current threshold influencing parameter corresponding to each branch is determined, which may include:

[0064] Perform the following steps for any branch:

[0065] If the branch is used to control a roller-type device, the current threshold influencing parameter corresponding to the branch includes the rated current and load characteristics of each roller-type device.

[0066] If the branch is used to control a vibrating trough-type device, the current threshold influencing parameters corresponding to the branch include the vibration frequency, vibration amplitude, material weight and transmission distance of each vibrating trough-type device.

[0067] If the branch is used to control conveyor belt equipment, the current threshold influencing parameters corresponding to the branch include the length, inclination and load weight of the conveyor belt.

[0068] If the branch is used to control cigarette pack and cigarette box conveying equipment, the current threshold influencing parameters corresponding to the branch include conveying speed and load weight.

[0069] If the branch is used to control the fan and the muffler, the current threshold influencing parameters corresponding to the branch include the power and the use efficiency of the fan and the muffler.

[0070] If the branch is used to control the control motor of the frequency converter and the soft starter, the current threshold influencing parameter corresponding to the branch includes the current impact intensity of the control motor starting.

[0071] If the branch is used to control a non-speed regulating motor, the current threshold influencing parameter corresponding to the branch includes the rated current of the non-speed regulating motor.

[0072] In this embodiment, according to the work tasks performed by the equipment on the silk-making line, the equipment can be divided into roller-type equipment, vibrating tank-type equipment, conveyor belt-type equipment, cigarette pack and cigarette box conveying equipment, fans and silencers, inverters and soft starters, and control motors and non-speed-regulating motors, etc. Different equipments require different rated voltages and rated currents due to their different working environments and corresponding work tasks. Correspondingly, as the control circuits corresponding to these equipments, the circuit voltages corresponding to the control circuits are also different. Based on this, this embodiment determines the current threshold influencing factors of the control circuits of these equipments according to different equipments, and then determines the preset current threshold of each branch to improve the control accuracy.

[0073] In this embodiment, a branch is taken as an example to illustrate the process of determining the preset current threshold:

[0074] Roller equipment may include rehumidifiers, feeders, etc. If the branch is used to control roller equipment, the current of the branch should be greater than or equal to the rated current of the roller equipment, and the current threshold corresponding to the branch should be used to affect the parameters, such as the load characteristics of each roller equipment, and fine-tune based on system stability.

[0075] If the branch is used to control a vibrating tank type device, the preset circuit threshold of the branch should ensure that the vibrating tank type device can operate stably under various loads, while avoiding overload. For vibrating tank type devices, the preset circuit threshold of the branch should be designed taking into account the vibration frequency, vibration amplitude, material weight and transmission distance of the vibrating tank type device.

[0076] If the branch is used to control conveyor belt equipment, it should be ensured that the conveyor belt equipment has sufficient power to overcome friction and gravity to transport the load. Therefore, for conveyor belt equipment, the preset circuit threshold of its branch should be designed taking into account the length, inclination and load weight of the conveyor belt.

[0077] Cigarette pack and cigarette box conveying equipment generally includes roller conveyors, chain conveyors, etc. Such equipment needs to ensure smooth conveying and no overload during operation. Therefore, if this branch is used to control the cigarette pack and cigarette box conveying equipment, the current threshold influencing parameters corresponding to this branch include conveying speed and load weight.

[0078] If the branch is used to control the fan and the muffler, the current threshold influencing parameters corresponding to the branch include the power and the use efficiency of the fan and the muffler.

[0079] For the control motor of the frequency converter and soft starter, there will be a current shock when it starts. If this branch is used to control the control motor of the frequency converter and soft starter, then this branch should consider how to reduce the current shock intensity of the control motor startup to avoid adverse effects on the power grid and the motor, while also providing sufficient starting torque for the control motor.

[0080] If the branch is used to control a non-speed-regulated motor, the current threshold influencing parameter corresponding to the branch includes the rated current of the non-speed-regulated motor to ensure that the motor runs in a normal working state and prevents overload or underload.

[0081] In an optional embodiment, determining the preset current threshold of each branch according to the current threshold influencing parameter corresponding to each branch and the operation mode of the device in each branch in S200 may include:

[0082] The initial preset current threshold is adjusted according to the current threshold influencing parameters corresponding to each branch to obtain an adjusted initial preset current threshold.

[0083] According to the operation mode of the equipment in each branch, the current threshold standard value of each branch is determined.

[0084] According to the current threshold standard value of each branch, the adjusted initial preset current threshold of each branch is corrected to obtain the preset current threshold of each branch.

[0085] In this embodiment, when setting the preset current threshold of each branch, the energy consumption of the equipment needs to be considered. The operation mode of the equipment may include preheating mode, standby mode, start-up mode, tailing mode, cooling mode, energy-saving operation mode and precise start-stop mode. The requirements for the standard value of the current threshold in different modes are different, specifically:

[0086] In the preheating mode, the current threshold standard value needs to take into account the device preheating time and preheating efficiency. Due to differences in ambient temperature, the preheating time of the host device in different seasons is different. The preheating time needs to be adjusted according to seasonal changes to reduce energy consumption.

[0087] In standby mode, the current threshold standard value needs to be set to take into account the energy consumption of the device during idling and preheating standby. The idling of the device in standby mode will cause additional power consumption, so the control strategy needs to be optimized to reduce energy consumption.

[0088] In the startup mode, the setting of the current threshold standard value is closely related to the startup sequence and startup time of the equipment. Optimizing the control process and reducing the equipment's no-load operation time are the keys to reducing energy consumption.

[0089] In the tailings mode, the setting of the current threshold standard value is related to the efficiency of the equipment in handling the remaining materials. Optimizing the tailings handling process and reducing equipment idling can reduce energy consumption.

[0090] In cooling mode, the setting of the current threshold standard value needs to take into account the cooling time and cooling efficiency of the equipment. Optimizing the cooling control method can reduce energy consumption.

[0091] In the energy-saving operation mode, the setting of the current threshold standard value needs to consider the energy-saving control strategy and energy recycling of the equipment. By refining the process section, optimizing the preheating mode, optimizing the discharge system of the silk storage cabinet, improving the vacuum rehumidification cooling water control method, optimizing the drum cleaning time, and recycling cooling water and condensed water, the energy consumption of the equipment is reduced, and the equipment operation cost of the silk workshop is reduced.

[0092] In the precise start-stop mode, the setting of the current threshold standard value needs to take into account the start-stop logic and start-stop time of the equipment. By optimizing the start-stop logic, the idling time and wear of the equipment are reduced, the effective operation rate of the equipment is improved, and energy consumption is reduced.

[0093] According to the operation mode of the equipment in each branch, the current threshold standard value of each branch is determined while reducing energy consumption and meeting normal production needs. Then, the adjusted initial preset current threshold of each branch is corrected to obtain the preset current threshold of each branch.

[0094] Step 130: If there is a fault, the diagnostic module is selected through SITOP to locate the faulty branch according to the topology.

[0095] In this embodiment, when a fault occurs, the SITOP selection diagnosis module can locate the faulty branch according to the topology structure and shut down the faulty branch to prevent it from affecting other normal branches.

[0096] In an optional embodiment, in order to avoid misjudgment, the SITOP selection diagnosis module can allow a higher current to appear instantaneously when detecting that the current of each branch is within the allowable range of the preset current threshold. The shutdown time is related to the energy accumulation time. This can avoid some loads from generating a large impact current at the moment of startup, causing the selection module to misjudge it as a short-circuit current and shut down instantly. The module can sequentially connect the output channels of each branch to reduce the impact current on the power supply. Among them, the allowable range of the preset current threshold can be within 150% of the preset current threshold.

[0097] In an optional embodiment, the topological structure of the silk-making line control circuit and the fault diagnosis and fault location results can also be displayed in this embodiment, so that the staff can promptly find the fault in the control circuit for timely maintenance.

[0098] In this embodiment, after determining that a branch circuit has a fault, the SITOP selection diagnosis module can only identify the corresponding electrical fault, and cannot effectively distinguish the corresponding mechanical fault. Therefore, in an optional embodiment, after determining and locating the fault branch circuit, the method may further include:

[0099] The vibration signal is determined based on the current data corresponding to the fault branch.

[0100] According to the vibration signal, the fault type corresponding to the fault branch is determined.

[0101] In this embodiment, the vibration signal can effectively reflect the mechanical failure of the equipment, but if the corresponding vibration signal is collected for each device, it is necessary to install multiple sensors for collecting vibration signals, which will increase the cost. In addition, when the silk thread working environment is complex, even if the vibration signal can be collected, it is impossible to collect accurate vibration signals.

[0102] Taking into account the impact of the vibration signal on the current signal, the present embodiment can process the current signal in the current data corresponding to the faulty branch to obtain a vibration signal, and then determine whether there is a mechanical fault in the faulty branch and the corresponding fault type if there is a mechanical fault based on the vibration signal.

[0103] In an optional embodiment, determining the vibration signal according to the current data corresponding to the fault branch may include:

[0104] The feature extraction is performed on the current data corresponding to the fault branch to obtain the current harmonic feature.

[0105] Based on the current harmonic characteristics, the vibration signal is determined.

[0106] In this embodiment, the influence of the vibration signal on the current signal is mainly reflected in the current harmonic characteristics of the current signal, so the current data corresponding to the fault branch can be feature extracted to obtain the current harmonic characteristics. The obtained current harmonic characteristics are further analyzed to determine the vibration signal.

[0107] In an optional embodiment, determining the fault type corresponding to the fault branch according to the vibration signal may include:

[0108] Extract the spectrum, phase, and amplitude of vibration signals.

[0109] The fault type corresponding to the fault branch is determined based on the frequency spectrum, phase and amplitude of the vibration signal.

[0110] In this embodiment, different types of mechanical faults have different frequency spectra, phases and amplitudes of the vibration signals in the corresponding vibration signals. Therefore, the frequency spectra, phases and amplitudes of the vibration signals can be extracted to determine the type of mechanical fault corresponding to the fault branch.

[0111] In summary, in order to achieve accurate judgment, this embodiment takes into account that the current thresholds are different when the operating modes of the equipment in different branches are different, and when the control functions corresponding to each branch are different, it means that the types of equipment corresponding to the control are different. In this case, the current threshold corresponding to each branch must also be different. Based on these two points, this embodiment adjusts the current threshold corresponding to each branch according to the control function performed by each branch and the operating mode of the corresponding equipment, so as to monitor each branch in real time through the SITOP selection diagnosis module. When the current of each branch exceeds the corresponding preset current threshold, the faulty branch is located in time and the power is cut off to ensure that normal production is not affected.

[0112] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0113] The following is an embodiment of the device of the present invention. For details not described in detail, reference may be made to the corresponding method embodiments described above.

[0114] Figure 3 The structure diagram of the fault diagnosis and positioning device of the silk thread control circuit provided by the embodiment of the present invention is shown. For the convenience of explanation, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0115] like Figure 3 As shown, the fault diagnosis and positioning device 3 for the silk thread control circuit includes:

[0116] An acquisition module 31 is used to acquire the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch;

[0117] A diagnostic module 32, which is used to select a diagnostic module through SITOP, and determine whether each branch has a fault according to the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding device;

[0118] The positioning module 33 is used to locate the faulty branch according to the topology structure by selecting the diagnosis module through SITOP if a fault exists.

[0119] In a possible implementation, the fault diagnosis and positioning device 3 for the silk-making line control circuit further includes a calculation module 34;

[0120] The calculation module 34 is specifically used for:

[0121] Determine the current threshold influencing parameter corresponding to each branch according to the control function performed by each branch;

[0122] The preset current threshold of each branch is determined according to the current threshold influencing parameters corresponding to each branch and the operation mode of the equipment in each branch.

[0123] In a possible implementation, the devices controlled by each branch include: roller type equipment, vibrating tank type equipment, conveyor belt type equipment, cigarette pack and cigarette box conveying equipment, fan and silencer, control motor of inverter and soft starter, and non-speed regulating motor;

[0124] The calculation module 34 is specifically used for:

[0125] Perform the following steps for any branch:

[0126] If the branch is used to control roller-type equipment, the current threshold influencing parameters corresponding to the branch include the rated current and load characteristics of each roller-type equipment;

[0127] If the branch is used to control a vibrating tank-type device, the current threshold influencing parameters corresponding to the branch include the vibration frequency, vibration amplitude, material weight and transmission distance of each vibrating tank-type device;

[0128] If the branch is used to control conveyor belt equipment, the current threshold influencing parameters corresponding to the branch include the length, inclination and load weight of the conveyor belt;

[0129] If the branch is used to control cigarette pack and cigarette box conveying equipment, the current threshold influencing parameters corresponding to the branch include conveying speed and load weight;

[0130] If the branch is used to control the fan and the muffler, the current threshold influencing parameters corresponding to the branch include the power and use efficiency of the fan and the muffler;

[0131] If the branch is used to control the control motor of the frequency converter and the soft starter, the current threshold influencing parameter corresponding to the branch includes the current impact intensity of the control motor starting;

[0132] If the branch is used to control a non-speed regulating motor, the current threshold influencing parameter corresponding to the branch includes the rated current of the non-speed regulating motor.

[0133] In a possible implementation, the calculation module 34 is specifically configured to:

[0134] According to the current threshold influencing parameters corresponding to each branch, the initial preset current threshold is adjusted to obtain an adjusted initial preset current threshold;

[0135] Determine the current threshold standard value of each branch according to the operation mode of the equipment in each branch;

[0136] According to the current threshold standard value of each branch, the adjusted initial preset current threshold of each branch is corrected to obtain the preset current threshold of each branch.

[0137] In a possible implementation, the fault diagnosis and positioning device 3 for the silk thread control circuit further includes an identification module 35;

[0138] The identification module 35 is specifically used for:

[0139] Determine the vibration signal according to the current data corresponding to the fault branch;

[0140] According to the vibration signal, the fault type corresponding to the fault branch is determined.

[0141] In a possible implementation, the identification module 35 is specifically configured to:

[0142] Extract features from the current data corresponding to the fault branch to obtain current harmonic features;

[0143] Based on the current harmonic characteristics, the vibration signal is determined.

[0144] In a possible implementation, the identification module 35 is specifically configured to:

[0145] Extract the spectrum, phase and amplitude of the vibration signal;

[0146] The fault type corresponding to the fault branch is determined based on the frequency spectrum, phase and amplitude of the vibration signal.

[0147] Figure 4Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 4 As shown, the electronic device 4 of this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, the steps of the above-mentioned various embodiments of the fault diagnosis and positioning method of the silk thread control circuit are implemented, for example Figure 1 Alternatively, when the processor 40 executes the computer program 42, the functions of each module / unit in the above-mentioned device embodiments are realized, for example Figure 3 The functions of each module are shown.

[0148] Exemplarily, the computer program 42 may be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 42 in the electronic device 4. For example, the computer program 42 may be divided into Figure 3 The modules shown.

[0149] The electronic device 4 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 4 It is only an example of the electronic device 4 and does not constitute a limitation of the electronic device 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0150] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0151] The memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used to store the computer program and other programs and data required by the electronic device. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0152] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0153] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0154] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0155] In the embodiments provided by the present invention, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0156] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0157] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0158] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, it can implement the steps of the above-mentioned various silk-making line control circuit fault diagnosis and positioning method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0159] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for fault diagnosis and positioning of a silk thread control circuit, characterized in that: include: Obtain the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch; Select the diagnostic module through SITOP, and judge whether each branch has a fault according to the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding equipment; If a fault exists, the faulty branch is located according to the topology by using the SITOP selection diagnosis module.

2. The method for fault diagnosis and positioning of a silk thread control circuit according to claim 1, characterized in that: The preset current threshold of each branch is determined by: Determine the current threshold influencing parameter corresponding to each branch according to the control function performed by each branch; The preset current threshold of each branch is determined according to the current threshold influencing parameters corresponding to each branch and the operation mode of the equipment in each branch.

3. The fault diagnosis and positioning method for the silk thread control circuit according to claim 2 is characterized in that: The equipment controlled by each branch includes: roller equipment, vibrating tank equipment, conveyor belt equipment, cigarette pack and cigarette box conveying equipment, fans and silencers, control motors of inverters and soft starters, and non-speed regulating motors; The determining of the current threshold influencing parameter corresponding to each branch according to the control function performed by each branch includes: Perform the following steps for any branch: If the branch is used to control roller-type equipment, the current threshold influencing parameters corresponding to the branch include the rated current and load characteristics of each roller-type equipment; If the branch is used to control a vibrating tank-type device, the current threshold influencing parameters corresponding to the branch include the vibration frequency, vibration amplitude, material weight and transmission distance of each vibrating tank-type device; If the branch is used to control conveyor belt equipment, the current threshold influencing parameters corresponding to the branch include the length, inclination and load weight of the conveyor belt; If the branch is used to control cigarette pack and cigarette box conveying equipment, the current threshold influencing parameters corresponding to the branch include conveying speed and load weight; If the branch is used to control the fan and the muffler, the current threshold influencing parameters corresponding to the branch include the power and use efficiency of the fan and the muffler; If the branch is used to control the control motor of the frequency converter and the soft starter, the current threshold influencing parameter corresponding to the branch includes the current impact intensity of the control motor starting; If the branch is used to control a non-speed-regulated motor, the current threshold influencing parameter corresponding to the branch includes the rated current of the non-speed-regulated motor.

4. The fault diagnosis and positioning method for the silk thread control circuit according to claim 3 is characterized in that: The step of determining the preset current threshold of each branch according to the current threshold influencing parameter corresponding to each branch and the operation mode of the device in each branch includes: According to the current threshold influencing parameters corresponding to each branch, the initial preset current threshold is adjusted to obtain an adjusted initial preset current threshold; Determine the current threshold standard value of each branch according to the operation mode of the equipment in each branch; According to the current threshold standard value of each branch, the adjusted initial preset current threshold of each branch is corrected to obtain the preset current threshold of each branch.

5. The fault diagnosis and positioning method for the silk thread control circuit according to claim 1, characterized in that: The method further comprises: Determining a vibration signal according to current data corresponding to the fault branch; The fault type corresponding to the fault branch is determined according to the vibration signal.

6. The method for fault diagnosis and positioning of a silk thread control circuit according to claim 5, characterized in that: The step of determining the vibration signal according to the current data corresponding to the fault branch includes: Extracting features from the current data corresponding to the fault branch to obtain current harmonic features; Based on the current harmonic characteristics, the vibration signal is determined.

7. The fault diagnosis and positioning method for the silk thread control circuit according to claim 5, characterized in that: The determining, according to the vibration signal, a fault type corresponding to the fault branch includes: Extracting the frequency spectrum, phase and amplitude of the vibration signal; The fault type corresponding to the fault branch is determined according to the frequency spectrum, phase and amplitude of the vibration signal.

8. A fault diagnosis and positioning device for a silk thread control circuit, characterized in that: include: An acquisition module is used to acquire the topological structure of the silk-making wire control circuit to be detected and the current data corresponding to each branch; A diagnostic module, which is used to select a diagnostic module through SITOP, and judge whether each branch has a fault according to the current data of each branch and the preset current threshold corresponding to each branch; wherein the preset current threshold of each branch is determined according to the control function performed by each branch and the operation mode of the corresponding equipment; The positioning module is used to locate the faulty branch according to the topology structure through the SITOP selection diagnosis module if a fault exists.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method as claimed in any one of claims 1 to 7 are implemented.

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