A device, method and storage medium for monitoring faults of explosion-proof motor junction box

Abstract

The present invention discloses a fault monitoring device, method and storage medium for explosion-proof motor junction box, the device comprises: a temperature and humidity sensing module inside the box, used to obtain temperature and humidity data inside the junction box; a temperature and humidity sensing module outside the box, used to obtain temperature and humidity data outside the junction box; a data processing module, used for time synchronization processing to obtain target temperature and humidity data; a near field communication module, used to transmit the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to the data processing module through wireless signals without changing the structure of the junction box; a fault detection module, used to determine the state of the junction box according to the target temperature and humidity data, the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes abnormal temperature, water inlet fault or condensation fault; a 5G communication module, used to transmit the state of the junction box to a fault monitoring platform. The present invention realizes junction box fault monitoring, improves efficiency, reduces cost, and can be widely used in the field of motor monitoring technology.

Description

Technical Field

[0001] The present invention relates to the technical field of motor monitoring, and in particular to a device, method and storage medium for monitoring failure of an explosion-proof motor junction box. Background Art

[0002] In industrial enterprises, explosion-proof motor junction boxes are mainly used to protect and carry the electrical connection lines of motors to ensure the normal operation of motors. In the field of petrochemicals, the motor operating environment is an explosion-proof place, and the explosion-proof motor junction box has strong sealing and anti-interference capabilities. However, it is easy for heat, water or condensation to occur in the explosion-proof motor junction box. In order to ensure the safety of the motor, it is necessary to monitor the motor junction box in real time to see if there is any fault. The traditional monitoring method is to manually disassemble the junction box to check the status of the junction box, which is time-consuming and labor-intensive, and cannot be monitored in real time, and the efficiency is low. At the same time, the motors in the petrochemical industry are scattered and numerous, and the cost of manual monitoring is high.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the invention

[0004] The embodiments of the present invention provide an explosion-proof motor junction box fault monitoring device, method and storage medium, which effectively improve efficiency and reduce cost.

[0005] On the one hand, an embodiment of the present invention provides an explosion-proof motor junction box fault monitoring device, comprising:

[0006] A temperature and humidity sensing module inside the box, which is used to obtain temperature and humidity data inside the junction box;

[0007] An external temperature and humidity sensing module, which is used to obtain temperature and humidity data outside the junction box;

[0008] A data processing module, the data processing module is used to perform time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, the target temperature and humidity data including the temperature and humidity data inside the target box or the temperature and humidity data outside the target box;

[0009] A near field communication module, the near field communication module is used to transmit the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to the data processing module, so that the temperature and humidity data inside the junction box can be transmitted to the outside of the junction box through wireless signals without changing the structure of the motor junction box;

[0010] A fault detection module, the fault detection module is used to determine the state of the junction box according to the target temperature and humidity data, the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes a temperature abnormality, a water inlet fault, or a condensation fault;

[0011] A 5G communication module, wherein the 5G communication module is used to transmit the state of the junction box to a fault monitoring platform.

[0012] In some embodiments, the apparatus further comprises:

[0013] A debugging module, the debugging module is used to monitor the operating status of the temperature and humidity sensing module inside the box, the temperature and humidity sensing module outside the box, the data processing module, the near field communication module, the fault detection module and the 5G communication module;

[0014] An explosion-proof and waterproof housing, wherein the in-box temperature and humidity sensing module, the out-box temperature and humidity sensing module and the debugging module are built in the explosion-proof and waterproof housing;

[0015] A power module is arranged in the explosion-proof and waterproof housing and is used to provide working power.

[0016] The beneficial effects of the present invention are as follows:

[0017] An explosion-proof motor junction box fault monitoring device provided by an embodiment of the present invention includes an in-box temperature and humidity sensing module, an out-box temperature and humidity sensing module, a data processing module, a near-field communication module, a fault detection module, and a 5G communication module. Among them, the temperature and humidity data inside the junction box can be obtained by the in-box temperature and humidity sensing module, and the temperature and humidity data outside the junction box can be obtained by the out-box temperature and humidity sensing module, and then the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box are synchronized by the data processing module to obtain the target temperature and humidity data. During the data transmission process, the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box are transmitted to the data processing module through the near-field communication module. Then, according to the target temperature and humidity data, the state of the junction box is determined by the fault detection module, and finally the state of the junction box is transmitted to the fault monitoring platform through the 5G communication module, so that the junction box fault monitoring can be realized by obtaining and calculating a variety of junction box states, thereby improving efficiency and reducing costs.

[0018] On the other hand, an embodiment of the present invention provides a method for monitoring failure of an explosion-proof motor junction box, comprising the following steps:

[0019] Obtain the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box of the explosion-proof motor;

[0020] Performing time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, wherein the target temperature and humidity data includes the temperature and humidity data inside the target box or the temperature and humidity data outside the target box;

[0021] According to the target temperature and humidity data, calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box and humidity rise duration inside the box;

[0022] When the explosion-proof motor is not started, a first humidity state is determined according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve, wherein the first humidity state is used to characterize the humidity state when the explosion-proof motor is not started;

[0023] When the explosion-proof motor is started, a second humidity state is determined according to the temperature and humidity data in the target box, the time point of the humidity rise in the box, the time point of the humidity rise outside the box and the duration of the humidity rise in the box, wherein the second humidity state is used to characterize the humidity state when the explosion-proof motor is started;

[0024] Determine the temperature state of the junction box according to the temperature and humidity data inside the target box, the temperature and humidity data outside the target box, and the preset low temperature duration;

[0025] The state of the junction box is determined according to the first humidity state, the second humidity state and the temperature state of the junction box, wherein the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes a temperature abnormality, a water inlet fault or a condensation fault.

[0026] In some embodiments, the time synchronization processing of the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data includes:

[0027] Selecting the data in the box at the first time point from the temperature and humidity data in the junction box;

[0028] If the data outside the junction box at the first time point does not exist in the temperature and humidity data outside the junction box, the data inside the junction box at the first time point in the temperature and humidity data inside the junction box is deleted to obtain the target temperature and humidity data inside the junction box, and the monitoring time of the data outside the junction box at the first time point is the same as the monitoring time of the data inside the junction box at the first time point;

[0029] Selecting the data outside the junction box at a second time point from the temperature and humidity data outside the junction box;

[0030] If the target box internal temperature and humidity data does not contain the data inside the box at the second time point, the data outside the box at the second time point in the temperature and humidity data outside the junction box is deleted to obtain the target box external temperature and humidity data, and the monitoring time of the data inside the box at the second time point is the same as the monitoring time of the data outside the box at the second time point.

[0031] In some embodiments, determining the first humidity state according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve, and the box external humidity curve includes:

[0032] Extracting the current temperature outside the box from the target box external temperature and humidity data;

[0033] Calculating humidity similarity according to the humidity curve inside the box and the humidity curve outside the box;

[0034] If the current temperature outside the box is greater than the preset temperature threshold, determining whether the humidity change rate is greater than the temperature change rate;

[0035] If the humidity change rate is greater than the temperature change rate, determining whether the temperature change direction is the same as the humidity change direction;

[0036] If the temperature change direction is the same as the humidity change direction, then determine whether the humidity change is within the humidity fluctuation range;

[0037] If the humidity change is within the humidity fluctuation range, the state is considered normal as the first humidity state;

[0038] If the humidity change is not within the humidity fluctuation range, determining whether the humidity average value is greater than a first preset humidity threshold or whether the humidity similarity is greater than a preset similarity threshold;

[0039] If the humidity average value is greater than a first preset humidity threshold or the humidity similarity is greater than a preset similarity threshold, the water inflow fault is taken as the first humidity state.

[0040] In some embodiments, determining the second humidity state according to the target box internal temperature and humidity data, the box internal humidity rising time point, the box external humidity rising time point and the box internal humidity rising duration includes:

[0041] Extracting the current humidity in the box from the temperature and humidity data in the target box;

[0042] If the change trend of the temperature and humidity data inside the target box is the same as the change trend of the temperature and humidity data outside the target box, determine whether the current humidity inside the box is greater than a second preset humidity threshold, whether the humidity inside the box rises later than the humidity outside the box, or whether the humidity inside the box rises for longer than a preset rise time;

[0043] If the current humidity inside the box is greater than the second preset humidity threshold, the humidity rising time point inside the box is later than the humidity rising time point outside the box, or the humidity rising time inside the box is greater than the preset rising time, then the water inlet fault is taken as the second humidity state; otherwise, the state is taken as normal as the second humidity state.

[0044] In some embodiments, determining the temperature state of the junction box according to the target box internal temperature and humidity data, the target box external temperature and humidity data, and the preset low temperature duration includes:

[0045] Extracting the current temperature inside the box from the temperature and humidity data inside the target box;

[0046] Extracting the current humidity outside the box and the current temperature outside the box from the target box external temperature and humidity data;

[0047] Calculating the dew point temperature according to the current humidity outside the box and the current temperature outside the box;

[0048] If the current temperature inside the box is lower than the dew point temperature and the low temperature duration is longer than the preset low temperature duration, the temperature abnormality is taken as the junction box temperature state; otherwise, the state is taken as the junction box temperature state.

[0049] In some embodiments, the calculating the dew point temperature according to the current humidity outside the box and the current temperature outside the box includes:

[0050] The dew point temperature is calculated according to the current humidity outside the box and the current temperature outside the box by using a dew point temperature calculation formula, and the dew point temperature calculation formula is:

[0051]

[0052] Where, T dew is the dew point temperature, T out is the current temperature outside the box, RH out is the current humidity outside the box.

[0053] The beneficial effects of the present invention are as follows:

[0054] The embodiment of the present invention first obtains the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box, and performs time synchronization processing to obtain the target temperature and humidity data, and then calculates the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the humidity curve inside the box, the humidity curve outside the box, the humidity rising time point inside the box, the humidity rising time point outside the box, and the humidity rising time inside the box according to the target temperature and humidity data. When the explosion-proof motor is not started, the first humidity state is determined according to the target temperature and humidity data outside the box, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the humidity curve inside the box, and the humidity curve outside the box. When the explosion-proof motor is started, the second humidity state is determined according to the target temperature and humidity data inside the box, the humidity rising time point inside the box, the humidity rising time point outside the box, and the humidity rising time inside the box. Then, according to the target temperature and humidity data inside the box, the target temperature and humidity data outside the box and the preset low temperature time, the junction box temperature state is determined. Finally, according to the first humidity state, the second humidity state, and the junction box temperature state, the junction box state is determined, so that the junction box fault monitoring can be realized by determining multiple junction box states, thereby improving efficiency and reducing costs.

[0055] In another aspect, an embodiment of the present invention provides a computer device, comprising:

[0056] at least one processor;

[0057] at least one memory for storing at least one program;

[0058] When the at least one program is executed by the at least one processor, the at least one processor implements the described method.

[0059] On the other hand, 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 method described above is implemented.

[0060] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0062] Figure 1This is a flow chart of a method for monitoring failure of an explosion-proof motor junction box according to an embodiment of the present invention;

[0063] Figure 2 A schematic diagram of a time lag in humidity generation inside and outside a junction box according to an embodiment of the present invention;

[0064] Figure 3 This is a schematic diagram of a junction box in which water enters the junction box, causing the internal humidity to continue to rise, according to an embodiment of the present invention;

[0065] Figure 4 This is a schematic structural diagram of a fault monitoring device for an explosion-proof motor junction box according to an embodiment of the present invention;

[0066] Figure 5 A schematic diagram of an explosion-proof and waterproof housing of a fault monitoring device according to an embodiment of the present invention;

[0067] Figure 6 The figure is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the 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 the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0069] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0070] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0072] Before describing the embodiments of the present application in detail, some nouns and terms involved in the embodiments of the present application are first described. The nouns and terms involved in the embodiments of the present application are subject to the following explanations.

[0073] Motor junction box: It is an important component that connects the motor to the power supply. It consists of a box and some terminals, usually made of plastic or metal. The main function of the junction box is to protect the motor body, while facilitating customers to connect the power supply and ensure the normal operation of the motor. It has basic electrical clearance, creepage distance, protection level, installation and protection requirements, etc. These requirements ensure the safety and applicability of the junction box.

[0074] Near Field Communication (NFC) is an emerging technology that allows devices (such as mobile phones) to exchange data when they are close to each other. It is an integration of contactless radio frequency identification (RFID) and interconnection technology. It integrates the functions of inductive card readers, inductive cards and point-to-point communication on a single chip, and uses mobile terminals to realize mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting and other applications.

[0075] In the related technology, the motor junction box plays a vital role in industrial enterprises. It is mainly used to protect and carry the electrical connection lines of the motor, ensure the normal operation of the motor and provide safety. The most common types of failures in the motor junction box are heating, water ingress or condensation. At present, there is no means to determine in real time whether the motor junction box has water ingress or condensation. In the field of petrochemicals, the environment where the motor operates is harsh, most of which are explosion-proof places, and the motor junction box has strong sealing. Traditional means cannot monitor the status of the inside of the junction box in real time without changing the structure or performance of the motor junction box. In addition, the motors in the petrochemical industry are scattered and not easy to network, and traditional wireless communication methods are difficult to meet the requirements of high security of wireless networks and high data reliability.

[0076] In view of this, the embodiments of the present invention propose a fault monitoring device, method and storage medium for an explosion-proof motor junction box. A sensor module is installed on the junction box to collect the ambient temperature and humidity data inside and outside the motor junction box in real time. At the same time, near-field communication technology is used to transmit the data collected by the temperature and humidity sensor module in the box in real time, so that the temperature and humidity data in the junction box can be transmitted to the fault monitoring device outside the junction box through wireless signals without changing the structure of the motor junction box. After time synchronization processing, the temperature and humidity data inside and outside the junction box are compared to analyze whether abnormal temperature, water ingress or condensation faults occur inside the motor junction box, thereby providing digital support for daily inspections in the petrochemical industry.

[0077] The embodiment of the present application provides a method for monitoring the fault of an explosion-proof motor junction box, which relates to the field of motor monitoring technology. The embodiment of the present application provides a method for monitoring the fault of an explosion-proof motor junction box, which can be applied to a terminal, a server, or software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and a vehicle-mounted terminal, etc., but is not limited to this; the server side can be configured as an independent physical server, or a server cluster or distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network; the software can be an application that implements a method for monitoring the fault of an explosion-proof motor junction box, etc., but is not limited to the above forms.

[0078] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0079] The following is a detailed explanation of the embodiments of the present application in conjunction with the accompanying drawings:

[0080] Figure 1 is an optional flow chart of a method for monitoring failure of an explosion-proof motor junction box provided in an embodiment of the present application. Figure 1 The method may include but is not limited to steps S101 to S107.

[0081] Step S101, obtaining temperature and humidity data inside the junction box and temperature and humidity data outside the junction box of the explosion-proof motor;

[0082] Step S102, performing time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, where the target temperature and humidity data includes the temperature and humidity data inside the target box or the temperature and humidity data outside the target box;

[0083] Step S103, according to the target temperature and humidity data, calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rising time point inside the box, humidity rising time point outside the box and humidity rising time inside the box;

[0084] Step S104, when the explosion-proof motor is not started, determining a first humidity state according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve, wherein the first humidity state is used to characterize the humidity state when the explosion-proof motor is not started;

[0085] Step S105, when the explosion-proof motor is started, a second humidity state is determined according to the target box temperature and humidity data, the box humidity rising time point, the box humidity rising time point and the box humidity rising duration, and the second humidity state is used to characterize the humidity state when the explosion-proof motor is started;

[0086] Step S106, determining the temperature state of the junction box according to the temperature and humidity data inside the target box, the temperature and humidity data outside the target box, and the preset low temperature duration;

[0087] Step S107, determining the state of the junction box according to the first humidity state, the second humidity state and the temperature state of the junction box, where the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes abnormal temperature, water inflow fault or condensation fault.

[0088] Steps S101 to S107 shown in the embodiment of the present application implement fault monitoring of the junction box, improve efficiency and reduce costs.

[0089] In step S101 of some embodiments, the temperature and humidity data inside the junction box of the explosion-proof motor junction box can be obtained by the temperature and humidity sensing module inside the box, and the temperature and humidity data outside the junction box can be obtained by the temperature and humidity sensing module outside the box. The temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box of the explosion-proof motor junction box can also be obtained by other methods, not limited thereto.

[0090] In some embodiments, in step S102, time synchronization processing is performed on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, which may include but is not limited to the following steps:

[0091] Select the data in the junction box at the first time point from the temperature and humidity data in the junction box;

[0092] If the data outside the junction box at the first time point does not exist in the temperature and humidity data outside the junction box, the data inside the junction box at the first time point in the temperature and humidity data inside the junction box is deleted to obtain the target temperature and humidity data inside the junction box, and the monitoring time of the data outside the junction box at the first time point is the same as the monitoring time of the data inside the junction box at the first time point;

[0093] Select the data outside the junction box at the second time point from the temperature and humidity data outside the junction box;

[0094] If the target box temperature and humidity data does not contain the box data at the second time point, the box data outside the junction box at the second time point in the temperature and humidity data outside the junction box is deleted to obtain the target box temperature and humidity data outside the junction box. The monitoring time of the box data at the second time point is the same as the monitoring time of the box data outside the junction box at the second time point.

[0095] In some embodiments, the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box can be time-synchronized to obtain target temperature and humidity data, wherein the target temperature and humidity data can include target box temperature and humidity data or target box temperature and humidity data outside the target box, and the target box temperature and humidity data and the target box temperature and humidity data outside the target box are both represented by time series data, and both contain 24-hour temperature and humidity monitoring waveforms, so as to facilitate subsequent waveform comparison. The data inside the box at the first time point can be selected from the temperature and humidity data inside the junction box. If the data outside the box at the first time point does not exist in the temperature and humidity data outside the junction box, the data inside the box at the first time point in the temperature and humidity data inside the junction box is deleted to obtain the target box temperature and humidity data, so that the data at each time point in the target box temperature and humidity data can find the data at the same time point in the temperature and humidity data outside the junction box. Among them, the monitoring time of the data outside the box at the first time point is the same as the monitoring time of the data inside the box at the first time point. Then, the data outside the box at the second time point is selected from the temperature and humidity data outside the junction box. If the data inside the box at the second time point does not exist in the temperature and humidity data inside the target box, the data outside the box at the second time point in the temperature and humidity data outside the junction box is deleted to obtain the temperature and humidity data outside the target box, so that the data at each time point in the temperature and humidity data outside the target box can find the data at the same time point in the temperature and humidity data inside the target box. Among them, the monitoring time of the data inside the box at the second time point is the same as the monitoring time of the data outside the box at the second time point. Furthermore, the temperature and humidity sensing module inside the box can also wake up the temperature and humidity sensing module outside the box to achieve the purpose of synchronous sampling, so that the temperature and humidity data inside the target box and the temperature and humidity data outside the target box are synchronized in time.

[0096] In some embodiments, in step S103, after filtering and smoothing the target temperature and humidity data, the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box, and humidity rise duration inside the box are calculated. Among them, the temperature change rate or humidity change rate can be calculated according to the change value of temperature or humidity in a time period. The humidity change rate reflects the content of water molecules inside the junction box to a certain extent, and the temperature change rate reflects the speed of temperature change inside the junction box. The maximum humidity value and the minimum humidity value in the target temperature and humidity data can be selected, and the maximum humidity value and the minimum humidity value are used as boundaries to obtain the humidity fluctuation range. The humidity average value is a quantitative measure of the humidity inside the junction box. As the weather changes within a day, the temperature and humidity may change within a certain range. Sometimes there may be high points, and sometimes there may be low points. The humidity average value is convenient for measuring the value of humidity within a certain time. The humidity curve inside the box and the humidity curve outside the box can be obtained by drawing the humidity data inside the box and the humidity data outside the box in a time period into a rectangular coordinate system, so as to facilitate subsequent similarity comparison. The time point of humidity rise in the box and the duration of humidity rise in the box can be determined from the humidity curve inside the box where the humidity inside the box changes with time, and the time point of humidity rise outside the box can be determined from the humidity curve outside the box where the humidity outside the box changes with time.

[0097] In some embodiments, in step S104, determining the first humidity state according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve may include but is not limited to the following steps:

[0098] Extract the current temperature outside the target box from the temperature and humidity data outside the target box;

[0099] Calculate humidity similarity based on the humidity curve inside the box and the humidity curve outside the box;

[0100] If the current temperature outside the box is greater than the preset temperature threshold, determine whether the humidity change rate is greater than the temperature change rate;

[0101] If the humidity change rate is greater than the temperature change rate, determine whether the temperature change direction is the same as the humidity change direction;

[0102] If the direction of temperature change is the same as the direction of humidity change, determine whether the humidity change is within the humidity fluctuation range;

[0103] If the humidity change is within the humidity fluctuation range, the state is normal as the first humidity state;

[0104] If the humidity change is not within the humidity fluctuation range, determining whether the humidity average value is greater than a first preset humidity threshold or whether the humidity similarity is greater than a preset similarity threshold;

[0105] If the humidity average value is greater than the first preset humidity threshold or the humidity similarity is greater than the preset similarity threshold, the water ingress fault is regarded as the first humidity state.

[0106] In some embodiments, when the explosion-proof motor is not started, the current temperature outside the box can be extracted from the temperature and humidity data outside the target box, and then the humidity similarity, curve range or curve slope is calculated based on the humidity curve inside the box and the humidity curve outside the box. If the current temperature outside the box is greater than the preset temperature threshold, it is determined whether the humidity change rate is greater than the temperature change rate. Exemplarily, the preset temperature threshold can be set to 40°C. If the current temperature outside the box is greater than 40°C, it is determined whether the humidity change rate is greater than the temperature change rate. If the humidity change rate is greater than the temperature change rate, it is determined whether the temperature change direction is the same as the humidity change direction. If the temperature change direction is the same as the humidity change direction, it is determined whether the humidity change is within the humidity fluctuation range. If the humidity change is within the humidity fluctuation range, the normal state is taken as the first humidity state. It can be understood that by monitoring the temperature change rate, humidity change rate, temperature change direction and humidity change direction, the amount of moisture content inside the junction box can be evaluated. For example, if the temperature change direction is rising, the humidity change direction also rises. The moisture in the junction box evaporates faster due to the temperature increase, and the humidity change rate increases. The sensor will detect the humidity rise. If the humidity rises to a certain interval and then slowly decreases, and is within the set humidity fluctuation range, it is considered to be in a normal state. If the humidity change is not within the humidity fluctuation range, it is determined whether the humidity average value is greater than the first preset humidity threshold or whether the humidity similarity is greater than the preset similarity threshold. If the humidity average value is greater than the first preset humidity threshold or the humidity similarity is greater than the preset similarity threshold, the water inflow fault is taken as the first humidity state. Among them, the first humidity state is used to characterize the humidity state when the explosion-proof motor is not started. For example, the first preset humidity threshold can be set to 75%RH, and the preset similarity threshold can be set to 80%. If the humidity average value is greater than 75%RH or the humidity similarity is greater than 80%, it can be determined that the junction box is not tightly sealed and there is water inflow, and the water inflow fault is taken as the first humidity state. It is understandable that the humidity average value is greater than the first preset humidity threshold for a long time, and it can be predicted that the humidity in the junction box is too high for a long time. The waveform comparison uses the humidity curve inside the box and the humidity curve outside the box to calculate the humidity similarity. If the humidity similarity reaches more than 80%, it can be judged that the junction box is not tightly sealed and there is a risk of water ingress. When the external temperature of the junction box reaches 40°C, the internal temperature of the junction box is usually higher than the external temperature of the junction box, and the humidity inside the junction box will show characteristics that deviate from the humidity data outside the junction box. When the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box have exactly the same trend from the start to the stop time of the motor, it can be judged that the motor junction box is not tightly sealed, there is a risk of water ingress, and reinforcement is required. More importantly, the motor can be divided into two states: starting and stopping. When the motor is in a stopped state for a certain period of time, the motor junction box cover needs to be opened, and it can be put back into use after the insulation resistance is measured. Abnormal humidity is the key factor causing the reduction of insulation resistance.The key causes of abnormal humidity include water ingress into the junction box and condensation on the junction box. Both of these causes will cause the electrical insulation performance to deteriorate, posing a safety hazard.

[0107] In some embodiments, in step S105, determining the second humidity state according to the target box internal temperature and humidity data, the box internal humidity rising time point, the box external humidity rising time point and the box internal humidity rising duration may include but is not limited to the following steps:

[0108] Extract the current humidity inside the box from the temperature and humidity data inside the target box;

[0109] If the change trend of the temperature and humidity data inside the target box is the same as the change trend of the temperature and humidity data outside the target box, determine whether the current humidity inside the box is greater than the second preset humidity threshold, whether the humidity rising time point inside the box is later than the humidity rising time point outside the box, or whether the humidity rising time inside the box is greater than the preset rising time;

[0110] If the current humidity inside the box is greater than the second preset humidity threshold, the humidity rising time point inside the box is later than the humidity rising time point outside the box, or the humidity rising time inside the box is greater than the preset rising time, the water inlet failure is taken as the second humidity state; otherwise, the normal state is taken as the second humidity state.

[0111] In some embodiments, when the explosion-proof motor is started, the current humidity inside the box can be extracted from the temperature and humidity data inside the target box. If the change trend of the temperature and humidity data inside the target box is the same as the change trend of the temperature and humidity data outside the target box, it is determined whether the current humidity inside the box is greater than the second preset humidity threshold, whether the humidity rising time point inside the box is later than the humidity rising time point outside the box, or whether the humidity rising time inside the box is greater than the preset rising time. If the current humidity inside the box is greater than the second preset humidity threshold, the humidity rising time point inside the box is later than the humidity rising time point outside the box, or the humidity rising time inside the box is greater than the preset rising time, then the water ingress fault is taken as the second humidity state; otherwise, the normal state is taken as the second humidity state. By way of example, the second preset humidity threshold can be set to 70% RH. If the current humidity inside the box is greater than the second preset humidity threshold, then the water ingress fault is taken as the second humidity state. Or, as Figure 2 As shown in the figure, if the humidity rise time point inside the box is later than the humidity rise time point outside the box, that is, the humidity time inside the box lags behind by one interval, it can be judged that the sealing tightness of the junction box is not enough, there is a risk of insulation degradation, and the water ingress fault is regarded as the second humidity state. Or, Figure 3As shown, the humidity data inside the junction box will rise briefly (generally not more than 1 hour) as the ambient temperature rises after startup. When a balance point is reached, the humidity begins to drop. If there is water ingress or condensation, the humidity data inside the junction box will rise for a long time as the ambient temperature rises after startup, making the humidity rise time inside the box longer than the preset rise time (depending on the severity of the internal water ingress or condensation, the humidity rise time inside the box will be longer), then the water ingress fault will be used as the second humidity state. Among them, the second humidity state is used to characterize the humidity state when the explosion-proof motor is started. Moreover, when the humidity data inside the junction box is in a high humidity state (85% and above) for a long time (one week or more), it is judged that the internal humidity is abnormal, and the motor junction box cover needs to be opened to check the insulation. It can be understood that water ingress refers to external moisture directly entering the junction box due to poor sealing. The resulting humidity change is rapid and long-lasting, which may cause the electrical insulation performance to deteriorate, increase the risk of short circuit, leakage and electric shock, and may even cause a fire in severe cases; condensation refers to the condensation of moisture inside the junction box due to temperature changes. When the temperature inside the junction box is lower than the dew point temperature of the outside air, the moisture in the air will condense into water droplets. Although condensation humidity does not directly damage insulation like water ingress, long-term accumulation may also cause insulation performance to deteriorate.

[0112] In some embodiments, in step S106, determining the temperature state of the junction box according to the temperature and humidity data inside the target box, the temperature and humidity data outside the target box, and the preset low temperature duration may include but is not limited to the following steps:

[0113] Extract the current temperature inside the box from the temperature and humidity data inside the target box;

[0114] Extract the current humidity outside the box and the current temperature outside the box from the target box external temperature and humidity data;

[0115] Calculate the dew point temperature based on the current humidity outside the box and the current temperature outside the box;

[0116] If the current temperature inside the box is lower than the dew point temperature, and the low temperature duration is longer than the preset low temperature duration, the temperature abnormality is regarded as the junction box temperature state; otherwise, the state is regarded as the junction box temperature state.

[0117] In some embodiments, the current temperature inside the box can be extracted from the target box temperature and humidity data, and the current humidity outside the box and the current temperature outside the box can be extracted from the target box temperature and humidity data. Then, the dew point temperature is calculated according to the current humidity outside the box and the current temperature outside the box by the dew point temperature calculation formula, wherein the dew point temperature calculation formula is: Where, T dew is the dew point temperature, T out is the current temperature outside the box, RH outis the current humidity outside the box. Then the current temperature inside the box is judged. If the current temperature inside the box is lower than the dew point temperature, and the low temperature duration is greater than the preset low temperature duration, the temperature abnormality is taken as the temperature state of the junction box; otherwise, the normal state is taken as the temperature state of the junction box. Exemplarily, the preset low temperature duration can be set to 7 days. If the current temperature inside the box is lower than the dew point temperature, an early warning message is output to remind the user to pay attention; if the current temperature inside the box is lower than the dew point temperature, and the low temperature duration is greater than 7 days, the temperature abnormality is taken as the temperature state of the junction box, and an alarm message is output to remind the user to take treatment measures. It can be understood that the duration that the current temperature inside the box is lower than the dew point temperature is the low temperature duration.

[0118] In some embodiments, in step S107, the state of the junction box can be determined according to the first humidity state, the second humidity state and the junction box temperature state. Among them, the junction box state includes a normal state or an abnormal state, and the abnormal state includes a temperature abnormality, a water inlet fault or a condensation fault. Exemplarily, when the first humidity state, the second humidity state and the junction box temperature state are all in a normal state, the normal state can be used as the junction box state. When the first humidity state or the second humidity state is a water inlet fault, and the junction box temperature state is a normal state, the water inlet fault can be used as the junction box state. When the first humidity state or the second humidity state is a normal state, and the junction box temperature state is a temperature abnormality, the temperature abnormality can be used as the junction box state. When the first humidity state or the second humidity state is a water inlet fault, and the junction box temperature state is a temperature abnormality, the temperature abnormality can be used as the junction box state. When the first humidity state or the second humidity state is a water inlet fault, and the junction box temperature state is a temperature abnormality, it can be determined that the explosion-proof motor junction box has both a water inlet fault and a temperature abnormality, and there are serious safety issues, and timely treatment measures need to be taken.

[0119] The beneficial effects of implementing the embodiments of the present invention include: the embodiments of the present invention first obtain the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box, and perform time synchronization processing to obtain the target temperature and humidity data, and then calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box and humidity rise duration inside the box according to the target temperature and humidity data. When the explosion-proof motor is not started, according to the target temperature and humidity data outside the box, temperature change rate, humidity change rate, humidity fluctuation range, humidity average The first humidity state is determined by the value, the humidity curve inside the box and the humidity curve outside the box. When the explosion-proof motor is started, the second humidity state is determined according to the target temperature and humidity data inside the box, the time point of the humidity rising inside the box, the time point of the humidity rising outside the box and the duration of the humidity rising inside the box. Then, the temperature state of the junction box is determined according to the target temperature and humidity data inside the box, the target temperature and humidity data outside the box and the preset low temperature duration. Finally, the junction box state is determined according to the first humidity state, the second humidity state and the temperature state of the junction box, so that the junction box fault monitoring can be realized by determining a variety of junction box states, thereby improving efficiency and reducing costs. At the same time, this embodiment can determine whether there is a water inlet fault, condensation fault or temperature abnormality in the motor junction box through trend comparison or threshold judgment of the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box, providing digital support for daily inspections in the petrochemical industry.

[0120] In some embodiments, the overall process of fault monitoring can first obtain the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box, and perform time synchronization processing, delete data with different monitoring times, and obtain target temperature and humidity data, and then calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box and humidity rise duration inside the box, so as to be used for subsequent judgment of humidity status, and then determine the first humidity status when the explosion-proof motor is not started and the second humidity status when the explosion-proof motor is started, and determine the temperature status of the junction box after calculating the dew point temperature, and finally comprehensively determine the junction box status to realize junction box fault monitoring.

[0121] like Figure 4 As shown, an embodiment of the present invention further provides an explosion-proof motor junction box fault monitoring device, comprising:

[0122] The temperature and humidity sensor module in the box is used to obtain the temperature and humidity data in the junction box;

[0123] The external temperature and humidity sensing module is used to obtain the temperature and humidity data outside the junction box;

[0124] A data processing module, the data processing module is used to perform time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, the target temperature and humidity data includes the temperature and humidity data inside the target box or the temperature and humidity data outside the target box;

[0125] A near field communication module, which is used to transmit the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to the data processing module, so that the temperature and humidity data inside the junction box can be transmitted to the outside of the junction box through wireless signals without changing the structure of the motor junction box;

[0126] A fault detection module, which is used to determine the state of the junction box according to the target temperature and humidity data. The state of the junction box includes a normal state or an abnormal state. The abnormal state includes abnormal temperature, water inlet fault or condensation fault;

[0127] 5G communication module,The 5G communication module is used to transmit the junction box status to the fault monitoring platform.

[0128] In some embodiments, a fault monitoring device for an explosion-proof motor junction box provided in this embodiment includes an in-box temperature and humidity sensing module 201, an out-box temperature and humidity sensing module 202, a data processing module 203, a near field communication module 204, a fault detection module 205, and a 5G communication module 206. The temperature and humidity data in the junction box can be first obtained through the in-box temperature and humidity sensing module 201, and the temperature and humidity data outside the junction box can be obtained through the out-box temperature and humidity sensing module 202 to obtain real-time data or time series data within a period of time, wherein the in-box temperature and humidity sensing module may include an in-box temperature and humidity sensor, and the out-box temperature and humidity sensing module may include an out-box temperature and humidity sensor. Then, the temperature and humidity data in the junction box and the temperature and humidity data outside the junction box are time-synchronized by the data processing module 203 to obtain target temperature and humidity data, wherein the target temperature and humidity data may include target in-box temperature and humidity data or target out-box temperature and humidity data, so that the target in-box temperature and humidity data and the target out-box temperature and humidity data have the same time axis. During the data transmission process, the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box can be transmitted to the data processing module through the near-field communication module 204, so that the data processing module can perform data processing, so that the temperature and humidity data inside the junction box can be transmitted to the outside of the junction box through wireless signals without changing the structure of the motor junction box, and the efficiency of short-distance data transmission through near-field communication is high. Then, according to the target temperature and humidity data, the state of the junction box is determined by the fault detection module 205, wherein the state of the junction box includes normal state or abnormal state, and the abnormal state includes abnormal temperature, water inlet fault or condensation fault. Finally, the state of the junction box is transmitted to the fault monitoring platform through the 5G communication module 206. Among them, according to the 5G intranet access rules and requirements of petrochemical enterprises, the state of the junction box can be sent to the 5G intranet of the petrochemical enterprise through 5G communication to realize the fault monitoring of the junction box.

[0129] In some embodiments, the apparatus further comprises:

[0130] A debugging module, which is used to monitor the operating status of the temperature and humidity sensing module inside the box, the temperature and humidity sensing module outside the box, the data processing module, the near field communication module, the fault detection module and the 5G communication module;

[0131] Explosion-proof and waterproof housing, which has built-in temperature and humidity sensor module inside the box, temperature and humidity sensor module outside the box and debugging module;

[0132] The power module is arranged in an explosion-proof and waterproof casing and is used to provide working power.

[0133] In some embodiments, the device further includes a debugging module, an explosion-proof and waterproof housing, and a power module. The debugging module is used to determine whether the temperature and humidity sensing module inside the junction box and the temperature and humidity sensing module outside the junction box are installed normally, and whether the data processing module, the near field communication module, the fault detection module, and the 5G communication module are in normal condition, so as to simplify the on-site installation workload. Figure 5 As shown, the device of this embodiment can provide explosion-proof and waterproof protection to prevent water from entering the device, and will not damage the components in the device when an explosion occurs in the external environment, which can be applied to the motor application site of the petrochemical industry. At the same time, the explosion-proof and waterproof housing has a built-in temperature and humidity sensor module inside the box, a temperature and humidity sensor module outside the box, and a debugging module. The power module is arranged in the explosion-proof and waterproof housing to provide working power for each module of the device of this embodiment. Due to the complex on-site environment of the petrochemical industry, it is unsafe to supply power through an external power supply and the construction is difficult. A large-capacity battery can be built into the device of this embodiment. The battery is explosion-proof and can meet the service life of 4 years (i.e., a large repair cycle), and the battery is easy to replace. Moreover, the device of this embodiment adopts an IP67 waterproof structure, has an intrinsically safe Exia-level explosion-proof grade, a waterproof grade of IP67, and an explosion-proof grade of EXib IIC T4 GB or above, which can meet the normal motor operation site. The use of 5G communication technology can meet the requirements of the petrochemical industry for high security of wireless networks and high reliability of data.

[0134] The beneficial effects of implementing the embodiments of the present invention include: an explosion-proof motor junction box fault monitoring device provided by the embodiments of the present invention includes an in-box temperature and humidity sensing module, an out-box temperature and humidity sensing module, a data processing module, a near-field communication module, a fault detection module, and a 5G communication module. Among them, the temperature and humidity data inside the junction box can be obtained by the in-box temperature and humidity sensing module, and the temperature and humidity data outside the junction box can be obtained by the out-box temperature and humidity sensing module, and then the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box are synchronized by the data processing module to obtain the target temperature and humidity data. During the data transmission process, the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box are transmitted to the data processing module through the near-field communication module. Then, according to the target temperature and humidity data, the state of the junction box is determined by the fault detection module, and finally the state of the junction box is transmitted to the fault monitoring platform through the 5G communication module, so that the junction box fault monitoring can be realized by obtaining and calculating a variety of junction box states, thereby improving efficiency and reducing costs.

[0135] like Figure 6 As shown, an embodiment of the present invention further provides a computer device, including:

[0136] at least one processor 901;

[0137] At least one memory 902, used to store at least one program;

[0138] When at least one program is executed by at least one processor, the at least one processor implements Figure 1 The method shown.

[0139] The contents of the above method embodiments are all applicable to the present device embodiments. The functions specifically implemented by the present device embodiments 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.

[0140] The embodiment of the present invention further 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, Figure 1 The method shown.

[0141] The contents of the above method embodiments are all applicable to the present storage medium embodiments. The functions specifically implemented by the present storage medium embodiments 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.

[0142] The preferred embodiments of the present application are described above with reference to the accompanying drawings, but the scope of the rights of the present application is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present application should be within the scope of the rights of the present application.

Claims

1. A fault monitoring device for explosion-proof motor junction box, characterized in that: include: A temperature and humidity sensing module inside the box, which is used to obtain temperature and humidity data inside the junction box; An external temperature and humidity sensing module, which is used to obtain temperature and humidity data outside the junction box; A data processing module, the data processing module is used to perform time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, the target temperature and humidity data including the temperature and humidity data inside the target box or the temperature and humidity data outside the target box; A near field communication module, the near field communication module is used to transmit the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to the data processing module, so that the temperature and humidity data inside the junction box can be transmitted to the outside of the junction box through wireless signals without changing the structure of the motor junction box; A fault detection module, the fault detection module is used to determine the state of the junction box according to the target temperature and humidity data, the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes a temperature abnormality, a water inlet fault, or a condensation fault; A 5G communication module, wherein the 5G communication module is used to transmit the state of the junction box to a fault monitoring platform; Wherein, determining the state of the junction box according to the target temperature and humidity data includes: According to the target temperature and humidity data, calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box and humidity rise duration inside the box; When the explosion-proof motor is not started, a first humidity state is determined according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve, wherein the first humidity state is used to characterize the humidity state when the explosion-proof motor is not started; When the explosion-proof motor is started, a second humidity state is determined according to the temperature and humidity data in the target box, the time point of the humidity rise in the box, the time point of the humidity rise outside the box and the duration of the humidity rise in the box, wherein the second humidity state is used to characterize the humidity state when the explosion-proof motor is started; Determine the temperature state of the junction box according to the temperature and humidity data inside the target box, the temperature and humidity data outside the target box, and the preset low temperature duration; The junction box state is determined according to the first humidity state, the second humidity state, and the junction box temperature state.

2. The device according to claim 1, characterized in that The device also includes: A debugging module, the debugging module is used to monitor the operating status of the temperature and humidity sensing module inside the box, the temperature and humidity sensing module outside the box, the data processing module, the near field communication module, the fault detection module and the 5G communication module; An explosion-proof and waterproof housing, wherein the in-box temperature and humidity sensing module, the out-box temperature and humidity sensing module and the debugging module are built in the explosion-proof and waterproof housing; A power module is disposed in the explosion-proof and waterproof housing and is used to provide working power.

3. A method for monitoring failure of an explosion-proof motor junction box, characterized in that: The following steps are involved: Obtain the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box of the explosion-proof motor; Performing time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data, wherein the target temperature and humidity data includes the temperature and humidity data inside the target box or the temperature and humidity data outside the target box; According to the target temperature and humidity data, calculate the temperature change rate, humidity change rate, humidity fluctuation range, humidity average value, humidity curve inside the box, humidity curve outside the box, humidity rise time point inside the box, humidity rise time point outside the box and humidity rise duration inside the box; When the explosion-proof motor is not started, a first humidity state is determined according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve, wherein the first humidity state is used to characterize the humidity state when the explosion-proof motor is not started; When the explosion-proof motor is started, a second humidity state is determined according to the temperature and humidity data in the target box, the time point of the humidity rise in the box, the time point of the humidity rise outside the box and the duration of the humidity rise in the box, wherein the second humidity state is used to characterize the humidity state when the explosion-proof motor is started; Determine the temperature state of the junction box according to the temperature and humidity data inside the target box, the temperature and humidity data outside the target box, and the preset low temperature duration; The state of the junction box is determined according to the first humidity state, the second humidity state and the temperature state of the junction box, wherein the state of the junction box includes a normal state or an abnormal state, and the abnormal state includes a temperature abnormality, a water inlet fault or a condensation fault.

4. The method according to claim 3, characterized in that The step of performing time synchronization processing on the temperature and humidity data inside the junction box and the temperature and humidity data outside the junction box to obtain target temperature and humidity data includes: Selecting the data in the box at the first time point from the temperature and humidity data in the junction box; If the data outside the junction box at the first time point does not exist in the temperature and humidity data outside the junction box, the data inside the junction box at the first time point in the temperature and humidity data inside the junction box is deleted to obtain the target temperature and humidity data inside the junction box, and the monitoring time of the data outside the junction box at the first time point is the same as the monitoring time of the data inside the junction box at the first time point; Selecting the data outside the junction box at a second time point from the temperature and humidity data outside the junction box; If the target box internal temperature and humidity data does not contain the data inside the box at the second time point, the data outside the box at the second time point in the temperature and humidity data outside the junction box is deleted to obtain the target box external temperature and humidity data, and the monitoring time of the data inside the box at the second time point is the same as the monitoring time of the data outside the box at the second time point.

5. The method according to claim 3, characterized in that: The determining of the first humidity state according to the target box external temperature and humidity data, the temperature change rate, the humidity change rate, the humidity fluctuation range, the humidity average value, the box internal humidity curve and the box external humidity curve includes: Extracting the current external temperature from the target external temperature and humidity data; Calculating humidity similarity according to the humidity curve inside the box and the humidity curve outside the box; If the current temperature outside the box is greater than the preset temperature threshold, determining whether the humidity change rate is greater than the temperature change rate; If the humidity change rate is greater than the temperature change rate, determining whether the temperature change direction is the same as the humidity change direction; If the temperature change direction is the same as the humidity change direction, then determine whether the humidity change is within the humidity fluctuation range; If the humidity change is within the humidity fluctuation range, the state is considered normal as the first humidity state; If the humidity change is not within the humidity fluctuation range, determining whether the humidity average value is greater than a first preset humidity threshold or whether the humidity similarity is greater than a preset similarity threshold; If the humidity average value is greater than a first preset humidity threshold or the humidity similarity is greater than a preset similarity threshold, the water inflow fault is taken as the first humidity state.

6. The method according to claim 3, characterized in that Determining the second humidity state according to the target box internal temperature and humidity data, the box internal humidity rising time point, the box external humidity rising time point and the box internal humidity rising duration includes: Extracting the current humidity in the box from the temperature and humidity data in the target box; If the change trend of the temperature and humidity data inside the target box is the same as the change trend of the temperature and humidity data outside the target box, determine whether the current humidity inside the box is greater than a second preset humidity threshold, whether the humidity inside the box rises later than the humidity outside the box, or whether the humidity inside the box rises for longer than a preset rise time; If the current humidity inside the box is greater than the second preset humidity threshold, the humidity rising time point inside the box is later than the humidity rising time point outside the box, or the humidity rising time inside the box is greater than the preset rising time, then the water inlet fault is taken as the second humidity state; otherwise, the state is taken as normal as the second humidity state.

7. The method according to claim 3, characterized in that The determining the temperature state of the junction box according to the target box internal temperature and humidity data, the target box external temperature and humidity data and the preset low temperature duration includes: Extracting the current temperature inside the box from the temperature and humidity data inside the target box; Extracting the current humidity outside the box and the current temperature outside the box from the target box external temperature and humidity data; Calculating the dew point temperature according to the current humidity outside the box and the current temperature outside the box; If the current temperature inside the box is lower than the dew point temperature and the low temperature duration is longer than the preset low temperature duration, the temperature abnormality is taken as the junction box temperature state; otherwise, the state is taken as the junction box temperature state.

8. The method according to claim 7, characterized in that The step of calculating the dew point temperature according to the current humidity outside the box and the current temperature outside the box includes: The dew point temperature is calculated according to the current humidity outside the box and the current temperature outside the box by using a dew point temperature calculation formula, and the dew point temperature calculation formula is: Where, T dew is the dew point temperature, T out is the current temperature outside the box, RH out is the current humidity outside the box.

9. A computer 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 according to any one of claims 3 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 3 to 8 is implemented.

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