Measurement and analysis method and system based on portable downhole electromagnetic disturbance measurement equipment

Abstract

The present invention discloses a measurement and analysis method and system based on a portable downhole electromagnetic disturbance measurement device, the method comprising: entering a measurement interface of the portable downhole electromagnetic disturbance measurement device; determining a signal measurement frequency band when the test item determined in the measurement interface is radiation emission; confirming the working mode of the device under test after selecting the signal measurement frequency band; measuring the background noise of the environment in which the device under test is located when the device under test is in shutdown mode, and performing numerical measurement according to a preset measurement orientation to obtain a corresponding background noise measurement result; wherein the measurement orientation is determined based on a contour recognition result and a midline angle of an image captured by the device under test. The present invention can realize accurate business navigation and improve test efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic signal measurement equipment, and in particular to a measurement and analysis method and system based on portable downhole electromagnetic disturbance measurement equipment. Background Art

[0002] Although the electromagnetic compatibility laboratories that have been built have relatively advanced inspection capabilities at home and abroad, and have also carried out a series of electromagnetic compatibility tests and research in the past two years, the work done is basically from a local perspective, such as conducting electromagnetic compatibility tests and analysis on individual electrical equipment or systems on the surface, but unable to measure the electromagnetic interference phenomena occurring underground; or using non-explosion-proof equipment to conduct some electromagnetic measurements in abandoned and unproduced mines, but unable to reflect the actual electromagnetic conditions during mine production operations; or conducting electromagnetic simulation analysis of the underground tunnel structure environment, but unable to obtain real direct verification feedback. In short, the research on the underground electromagnetic environment and electromagnetic compatibility of electrical equipment lacks in-situ measurement data support, and cannot achieve comprehensive research and evaluation. The fundamental reason for this situation is that there is no special electromagnetic interference test instrument that meets the explosion-proof requirements.

[0003] For electromagnetic interference measurement at underground sites, a lot of data needs to be recorded. In addition to the spectrum and field strength, the corresponding measurement object, scene location, measurement direction, test distance, test height, antenna polarity, etc. need to be recorded. The underground working environment is relatively harsh, especially on the working face, where one can only hold the equipment with both hands to operate it, and cannot free up hands for additional recording. Even in places with slightly better environments such as pump rooms and central substations, handwriting requires an additional person, and the time for handwritten recording will become the wasted time of the portable device instrument, resulting in a decrease in the effective time of actual use, which indirectly compresses the battery life. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the present invention proposes a measurement and analysis method based on a portable downhole electromagnetic interference measurement device, and develops a matching on-site electrical equipment electromagnetic interference measurement platform software, which not only realizes the electronicization of on-site records, but also prompts and guides the measurement personnel step by step through business navigation to record all information points such as the test environment, orientation, settings, etc., and synchronizes and stores them with the measurement data of the spectrum and field strength.

[0006] Another object of the present invention is to provide a measurement and analysis system based on a portable downhole electromagnetic disturbance measurement device.

[0007] To achieve the above-mentioned object, the present invention proposes, on one hand, a measurement and analysis method based on a portable downhole electromagnetic disturbance measurement device, comprising:

[0008] Enter the measurement interface of the portable downhole electromagnetic disturbance measurement equipment;

[0009] When the test item determined in the measurement interface is radiated emission, determine the signal measurement frequency band;

[0010] Confirm the working mode of the device under test after selecting the signal measurement frequency band;

[0011] When the device under test is in shutdown mode, the background noise of the environment in which the device under test is located is measured, and numerical measurements are performed according to a preset measurement orientation to obtain corresponding background noise measurement results; wherein the measurement orientation is determined based on the contour recognition result and the midline angle of the image taken by the device under test.

[0012] In addition, the measurement and analysis method based on the portable downhole electromagnetic disturbance measurement device according to the above embodiment of the present invention may also have the following additional technical features:

[0013] Further, in one embodiment of the present invention, determining the measurement orientation of the device under test based on the contour recognition result and the midline angle of the image captured by the device under test includes:

[0014] The image captured by the device under test is analyzed and processed by an image recognition method based on color segmentation and edge detection, and the corresponding device under test is matched in the scene model library to obtain the contour recognition result of the device under test, and display the angle, distance and height information required to be measured;

[0015] The contour recognition result is aligned with the actual device under test to determine the centerline position, and the measurement direction is determined according to the centerline angle displayed in the image captured by the device under test, and the actual measured angle, distance and height information are determined according to the infrared ranging function of the host camera.

[0016] Furthermore, in one embodiment of the present invention, the working mode of the device under test further includes a standby mode and an operating mode; the method further includes:

[0017] When the device under test is in standby mode and operating mode, the radiation signal of the device under test in the working state is measured; the measurement objects include the device under test body and the cable of the device under test.

[0018] Further, in one embodiment of the present invention, when the measurement object is a main body of the device under test, the signal measurement frequency band to be measured is selected according to the preset measurement orientation, the measurement distance and measurement height of the spectrum analyzer are confirmed, and the spectrum analyzer is adjusted so that the antenna measures the radiation signal of the working state of the main body of the device under test in the horizontal polarization and vertical polarization directions in sequence to obtain a first signal measurement result;

[0019] When the measurement object is a cable of the device under test, after confirming the properties of the cable, the radiation signal of the cable working state is measured according to a preset measurement distance to obtain a second signal measurement result.

[0020] Furthermore, in one embodiment of the present invention, before entering the measurement interface of the portable downhole electromagnetic disturbance measurement device, the method further includes:

[0021] Select the test scenario according to the prompts of the portable downhole electromagnetic disturbance measurement equipment;

[0022] Outputting a list of devices in the corresponding test scenario based on the selected test scenario;

[0023] Select the device under test in the device list, and use the host camera to output the image captured by the device under test.

[0024] To achieve the above object, the present invention further provides a measurement and analysis system based on a portable downhole electromagnetic disturbance measurement device, comprising:

[0025] A measurement interface entry module is used to enter the measurement interface of a portable downhole electromagnetic disturbance measurement device;

[0026] A measurement frequency band determination module, used to determine a signal measurement frequency band when the test item determined in the measurement interface is radiation emission;

[0027] A working mode determination module, used to confirm the working mode of the device under test after selecting the signal measurement frequency band;

[0028] The background noise measurement module is used to measure the background noise of the environment in which the device under test is located when the device under test is in the shutdown mode, and to perform numerical measurement according to a preset measurement orientation to obtain the corresponding background noise measurement result; wherein the measurement orientation is determined based on the contour recognition result and the midline angle of the image taken by the device under test.

[0029] The measurement and analysis method and system based on the portable downhole electromagnetic disturbance measurement equipment of the embodiment of the present invention greatly simplifies the complicated parameter setting process of the measurement personnel and improves the measurement efficiency. At the same time, the measurement data results of typical equipment are integrated into the system software of the spectrum analyzer, which can be compared with the measurement indication of the current equipment to determine the correctness of the measured spectrum. When there is a large error, it will give a prompt whether further supplementary measurement is needed, thereby ensuring the accuracy of the measurement.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 is a flow chart of a measurement and analysis method based on a portable downhole electromagnetic disturbance measurement device according to an embodiment of the present invention;

[0033] Figure 2 is a schematic structural diagram of a portable downhole electromagnetic disturbance measurement device according to an embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of the working principle of the integrated mode according to an embodiment of the present invention;

[0035] Figure 4 is a schematic structural diagram of an intrinsically safe spectrum analyzer according to an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of selecting RE field test points according to an embodiment of the present invention;

[0037] Figure 6 is a flow chart of coal mine on-site electromagnetic disturbance measurement business according to an embodiment of the present invention;

[0038] Figure 7 is a navigation flow chart of a coal mine on-site electromagnetic disturbance measurement service according to an embodiment of the present invention;

[0039] Figure 8 is a distribution cabinet measurement boundary image recognition diagram according to an embodiment of the present invention;

[0040] Fig. 9 It is a structural diagram of a measurement and analysis system based on a portable downhole electromagnetic disturbance measurement device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] The following describes a measurement and analysis method and system based on a portable downhole electromagnetic disturbance measurement device according to an embodiment of the present invention with reference to the accompanying drawings.

[0044] Figure 1 is a flow chart of a measurement and analysis method based on a portable downhole electromagnetic disturbance measurement device according to an embodiment of the present invention. Figure 1 As shown, the method includes:

[0045] S1, enter the measurement interface of the portable downhole electromagnetic disturbance measurement equipment;

[0046] S2, when the test item determined in the measurement interface is radiated emission, determine the signal measurement frequency band;

[0047] S3, confirming the working mode of the device under test after selecting the signal measurement frequency band;

[0048] S4, when the device under test is in the shutdown mode, the background noise of the environment in which the device under test is located is measured, and numerical measurement is performed according to a preset measurement orientation to obtain a corresponding background noise measurement result; wherein the measurement orientation is determined based on the contour recognition result and the centerline angle of the image taken by the device under test.

[0049] It is understood that the portable downhole electromagnetic disturbance measurement equipment of the present invention, such as Figure 2 As shown in the figure, a pure intrinsically safe explosion-proof type is adopted to reduce the size and weight of the equipment and improve portability while meeting the explosion-proof requirements. This electromagnetic disturbance measurement equipment adopts a suitcase design and consists of a spectrum analyzer, a field strength meter, and a comprehensive measurement host (hereinafter referred to as the host), wherein the host includes an interface module, a display screen, a keyboard and a mouse, an industrial control module, and a battery. Both the spectrum analyzer and the field strength meter are intrinsically safe in design, each with an independent battery power supply. They can be used alone in coal mines, or as part of the underground electromagnetic disturbance measurement equipment, embedded in a portable box for overall use, to achieve real-time synchronous measurement of the electromagnetic spectrum and field strength, and to achieve the same-screen display of data through the electromagnetic disturbance measurement software platform. In addition, for certain special places, wireless communication can also be used to achieve split synchronous measurement, as shown in Table 1. The measurement equipment has three working modes, which can be used in different usage scenarios and targeted scientific research.

[0050] Table 1

[0051]

[0052] In one embodiment of the present invention, the electromagnetic disturbance measurement equipment can be turned on at the measurement site to perform measurement in an integrated working mode. Figure 2As shown, the upper cover has a built-in camera on the outside, and a display screen on the inside. The lower box adopts an embedded slot design. A plug-in groove interface is designed for the spectrum analyzer and the field strength analyzer. After insertion, the host is connected, powered by the host and performs processing and display functions. At this time, the two embedded instruments will be off screen respectively, and the large screen on the upper cover will realize data and spectrum display. The host's software platform is enabled to perform data association and spectrum analysis on the measurement results of the spectrum and field strength. The embedded panel integrates the host switch, USB and other data interfaces, power display, integrated keyboard and trackball mouse, providing data interface and human-computer interaction facilities for the whole machine operation. The battery pack, industrial control module, interface module, communication conversion module, etc. are built-in under the panel; the main battery pack built into the equipment is a lithium manganese oxide battery pack that meets the intrinsic safety requirements, with a 12V output, a maximum rated energy of 100Wh, a maximum capacity of 10Ah, and a maximum 2A intrinsic safety output capacity of 2 channels, which can power the whole machine, one for the industrial control board and screen, and the other for the front-end RF measurement module, namely the spectrum module, field strength module and embedded processing unit. The suitcase also serves as a storage box for all equipment modules, making it easy to carry and transport.

[0053] Among them, in the integrated mode, the spectrum analyzer and the field strength meter are connected to their respective receiving antennas, and the power supply is switched from the single power supply to the host power supply. The spectrum analyzer analyzes and processes the collected data through the conversion of the data interface. The data processor used is composed of the spectrum analyzer embedded processor and the host processor. The dual processor system has different functions and privilege levels. The host has powerful computing and processing functions, and its privilege level is superior to the embedded privilege level. The host monitors the resource utilization of the system in real time and undertakes the load balancing and policy scheduling of the processor. The system can use the capabilities of the industrial control host and the embedded dual processor to parallelize tasks, improve the parallelism and performance of the system, split large tasks into multiple subtasks, and execute them in parallel on two processors. By decomposing and merging tasks, the throughput and response time of the system can be effectively improved. The task allocation processing is implemented by the host embedded software program. For embedded software, the focus is on saving the use of processors. According to data statistics, in an economical handheld spectrum analyzer, the energy consumption of the processor accounts for about 20% of the total energy consumption of the whole machine, which has higher requirements for the embedded program design of high performance and low power consumption indicators of portable spectrum analyzers. By using monitoring windows and metrics, the effect of task allocation can be detected in real time and optimized in time.

[0054] Among them, the energy-saving method adopted is to assign tasks and threads to different processors according to different scheduling strategies, and select appropriate task scheduling algorithms to dynamically assign tasks. The algorithm can assign tasks according to the attributes and priorities of tasks to achieve uniform load and optimal performance. At the same time, the use of load balancing strategies such as static balancing, dynamic balancing and adaptive balancing ensures that tasks are evenly distributed between the two processors, improving system performance and resource utilization. The working principle of the integrated mode is as follows Figure 3 shown.

[0055] The host industrial control processing unit and the embedded processing unit of the spectrum analyzer work interactively and collaboratively, and the dual industrial control joint operation improves the processing speed of the equipment. The operation results are directly displayed on the host screen in the form of spectrum graphics and data lists, so that the equipment can be measured as soon as the cover is opened, without further operation.

[0056] Among them, the field strength meter collects and processes relatively little data during the measurement process. It uses a stand-alone embedded processing chip to perform calculations independently, does not occupy host resources, processes the collected signals itself, and then loads them into the host screen for display through the optical fiber conversion interface.

[0057] Among them, in order to further enhance the analysis capability, the host is equipped with a joint all-in-one software platform, which can directly control the spectrum analyzer and field strength meter through the keyboard and mouse, expand the analysis results to more real-time spectrum, FFT transformation, waterfall chart and field strength real-time corresponding display, realize the spectrum analyzer and field strength meter real-time synchronous analysis display of multiple parameters under the same spectrum graph, and the comparison display of frequency domain and time domain, which is convenient for measurement personnel to analyze and refer to. In terms of measurement scenarios, the software platform integrates the latest standards and formats of the current industry, such as 5G, CDMA, LTE-Advanced, etc., as well as related coding and protocol requirements, and can enter the scene for measurement without more settings by the measurement personnel; with the help of the software system, when the measurement scenario is single and the computing requirements are low, the host industrial control board or spectrum analyzer can be set to work alone through the software platform, thereby saving power consumption, and the non-working single machine is used as a backup device, with one main and one backup for measurement work, improving the reliability of underground measurement equipment.

[0058] Among them, the power consumption problem is also a major bottleneck of underground portable equipment. Among them, the field strength meter has relatively simple functions and low power consumption. Therefore, reducing power consumption mainly starts from the design of the spectrum analyzer. On the basis of ensuring the analysis power and measurement accuracy of the spectrum analyzer, reduce power consumption to extend the use time. In order to achieve low power consumption and high precision, in addition to the use of low-power chips and power processing as much as possible in the design, a large number of switching power supply chips with high conversion efficiency are selected, and it is also reflected in 4 key technologies: RF front-end integrated integration technology, that is, a large number of newly launched RF monolithic integrated circuits are selected in the design to give full play to their advantages of high integration and low power consumption, and the high and low intermediate frequency frequency conversion technology is used for the RF signal input at the front end to effectively reduce its design area and power consumption; embedded control technology: that is, the FPGA+DSP solution is adopted, and the FPGA realizes the full digital scanning control, so that the spectrum analyzer is locked point by point during the scanning process to achieve accurate frequency measurement, and the DSP realizes the full data volume calculation; intermediate frequency processing integration technology, that is, the full digital intermediate frequency design, solves the wide range of high-resolution bandwidth intermediate frequency filtering technology, and realizes the wide range of high-resolution bandwidth intermediate frequency filtering; power supply fine control technology, that is, the use of high-power chip power supply is finely controlled, so that it can be turned on when used and turned off when not used.

[0059] In one embodiment of the present invention, the portable underground electromagnetic disturbance measurement device works in a stand-alone working mode, and the spectrum analyzer is composed of a touch screen, a battery, an embedded processing unit and a spectrum module, an 802.11b / g / n Wi-Fi module and an antenna, and has a real-time spectrum measurement function. Figure 4 As shown in the figure, the RF board (signal acquisition circuit), digital board (numerical calculation) and battery power supply in the spectrum analyzer are all designed to be intrinsically safe, and can be used independently underground to measure electromagnetic spectrum. The spectrum analyzer is designed with intrinsically safe communication interfaces such as USB and RJ45, and after connecting to the whole equipment, it switches to external power supply (equipped battery) for power supply, and its own screen is turned off.

[0060] In one embodiment of the present invention, the field strength meter is composed of a small screen, a battery, a data processing module, a control module, an embedded socket and an antenna, and has the functions of electric field measurement and magnetic field measurement. The board of the field strength meter is also designed to be intrinsically safe, and can be used independently underground to measure the electric field strength and magnetic field strength. The field strength meter communicates with the industrial control board of the host of the measurement equipment through an optical fiber interface and a signal conversion module.

[0061] In one embodiment of the present invention, the portable underground electromagnetic disturbance measurement equipment works in a split joint working mode. Because the portable underground electromagnetic disturbance measurement equipment is relatively large and not suitable for handheld use, in the integrated working mode, the suitcase needs to be placed stably for operation. However, when performing measurement operations on the working face, the surveyor must stand in the small space under the bracket and move synchronously with the coal mining machine for measurement. In order to obtain synchronous measurement data of the spectrum analyzer and the field strength meter, the measurement equipment can use the split joint working mode. The spectrum analyzer, field strength meter, and measurement host are all turned on and running. The surveyor holds the spectrum analyzer and field strength meter and enters the working face bracket for measurement operations, and transmits the measurement data to the measurement host via WiFi, realizing synchronous measurement and analysis of the spectrum and field strength.

[0062] Specifically, the underground location information of coal mines cannot be realized by satellite positioning like on the ground. Currently, underground positioning mostly adopts UWB, WIFI and other positioning technologies to realize underground positioning. However, due to the inconsistency of positioning protocols of various companies (corresponding positioning identifiers need to be built-in) and the inability of the located facilities to know their own positions (only the upper computer software of the positioning system can display the specific location), the current positioning method cannot be realized on the measuring equipment of the present invention and does not meet the actual use requirements.

[0063] The location information required for electromagnetic disturbance measurement is scene and area information, so the present invention selects the typical scene modeling method in the measurement positioning mode. The platform software has done scene modeling for typical scenes (working surface, substation, pump room, etc.), and designed a basic model for typical electrical equipment in the area to facilitate the determination of measurement boundaries and measurement points, such as Figure 5 As shown, the electrical equipment is close to the wall on one side of the tunnel, so the actual measurement points are only three directions and their points, the measurement distance is 1m, and the measurement height is 1.2 or 1.6m.

[0064] Since there is no electromagnetic compatibility field measurement standard for the actual use of the equipment at present, the platform software of the present invention is designed to provide coal mine on-site electromagnetic disturbance measurement business navigation based on the group standard of the China Coal Society "Technical Specifications for Field Testing of Electromagnetic Disturbance of Coal Mine Electrical Equipment", which is convenient for measurement personnel to perform on-site measurement operations based on business navigation, save map data and synchronously record relevant measurement parameters. The specific navigation process is as follows: Figure 6 and Figure 7 shown.

[0065] Specifically, when conducting electromagnetic interference measurements on site, the measurement personnel can first select the test scene (working face, substation, pump room, transport lane, communication base station, ventilation room, etc.) according to the software prompts. The system will automatically give a list of equipment in the corresponding scene. The measurement personnel select the equipment under test and turn on the camera, and take pictures of the specific location, surrounding environment, cable conditions, etc. of the equipment under test (EUT) according to the prompts.

[0066] In one embodiment of the present invention, real-time environmental information is analyzed and processed by an image recognition method based on color segmentation and edge detection, and matched in a scene model library to output the contour line of the device under test; the contour line is aligned with the real-time device under test to determine the centerline position, and the point standing position is determined according to the angle, and the measured distance and height are determined based on the distance measurement method; the measurement orientation of the device under test is obtained based on the point standing position and the measured distance and height.

[0067] Specifically, the spectrum analyzer analyzes and processes the environment and device outline of the device under test through image recognition technology based on color segmentation and edge detection, matches the corresponding device under test in the scene model library, and displays the outline of the device under test (EUT measurement boundary) in the model, and prompts the test angle, distance, height and other information. Align the outline with the EUT on site to determine the centerline position, and then determine the standing position of the points according to the angle displayed on the interface, and finally use the infrared ranging function of the host camera to determine the measured distance and height, so that the measurement work can be carried out in sequence according to the specified measurement orientation.

[0068] In one embodiment of the present invention, the test item data is determined based on the measurement orientation; wherein the test item data includes radiated emission data and conducted emission data; the corresponding signal measurement frequency band is selected based on the radiated emission data, and the working mode of the device under test is confirmed based on the signal measurement frequency band; wherein the working mode of the device under test includes standby mode, operating mode and shutdown mode. When the device under test is in shutdown mode, the background noise of the environment in which the device under test is located is numerically collected in each measurement orientation in accordance with the pre-examination prompt information to obtain a numerical measurement result; when the device under test is in standby mode and operating mode, the radiation signal of the device working state is measured to obtain a signal measurement result. When measuring the main body of the device under test, based on the signal measurement frequency band and measurement orientation to be measured, the measurement distance and measurement height of the spectrum analyzer are confirmed, and the spectrum analyzer is adjusted so that the antenna measures the radiation signal of the device working state in the horizontal polarization and vertical polarization directions in turn to obtain a first signal measurement result; when measuring the cable of the device under test, the radiation signal of the device working state is measured according to the confirmed cable properties and the preset distance to obtain a second signal measurement result.

[0069] Specifically, after the measurement position is confirmed, enter the measurement interface, first select the test items: radiated emission, conducted emission, confirm whether the measured signal is radiated from space or from cable conduction, when radiated emission is selected, the system gives the measurement frequency band options: 9KHz-30MHz, 30MHz-200MHz, 200MHz-1GHz, 1GHz-8GHz, underground key facilities, 4G, 5G communication dedicated frequency bands, other frequency bands can be set according to site requirements, after selecting the measurement frequency band, confirm the working mode of the device under test (standby mode, running mode, shutdown mode), when the device under test is in shutdown mode, the background noise of the environment in which the EUT is located can be measured, select the environment / background noise option in the interface, and collect values ​​in each measurement position in turn according to the prompt information. During the collection process, a measurement description or a quick voice note within 10s can be added to each measurement parameter for later reference and analysis. In addition to being stored in the device in image mode, the background noise measurement data can also be stored as an environmental noise trace, which is convenient for subsequent retrieval and comparison analysis when the device under test is turned on.

[0070] When the device under test is in standby mode or running mode, the radiation signal of the device in working state can be measured. The measurement objects include the EUT body and the cables of the EUT. When measuring the EUT body, select the signal frequency band to be measured in the navigation interface. The measurement personnel stand in the prompted measurement position, confirm the measurement distance of the spectrum analyzer one by one, measure the height, and then turn the spectrum analyzer so that the antenna measures in the horizontal polarization and vertical polarization directions in turn, and record and save the measurement data. When measuring cables, you first need to confirm the equipment to which the cable belongs, the input cable / output cable, the power / communication cable, and the shielded / unshielded cable. After confirming the properties of the cable, keep the measurement distance at 20cm and start the measurement.

[0071] The measurement business navigation provides necessary information guidance and prompts on each interface to help measurement personnel make correct choices and operations. Measurement personnel only need to operate and input in the order of the business navigation operation process to complete the setting of all parameter parameters, the recording of measurement information and the synchronous storage of measurement data.

[0072] In one embodiment of the present invention, the measurement of the underground distribution room in a coal mine is taken as an example to illustrate the measurement process. The measurement personnel arrive at the measurement location, and the measurement equipment is turned on to enter the measurement system guidance interface. First, select the measurement scene-distribution room, select the corresponding distribution cabinet equipment in the scene model list, use the camera to capture the image of the distribution cabinet, and the contour recognition function will automatically identify the measurement boundary of the equipment. After confirming the position of the centerline of the boundary, the measurement interface will give a prompt for the measurement direction. The measurement personnel will stand at the indicated azimuth angle, and use infrared ranging to correct the measurement distance and height. After that, the measurement direction is confirmed and the numerical measurement work is started. During the measurement process, the system will mark suspicious signals that exceed the frequency range of common interference signals according to the statistical laws of the previous distribution cabinet database measurement data, and prompt the measurement personnel to pay attention or make additional measurements. Distribution cabinet measurement boundary image recognition such as Figure 8 shown.

[0073] The measurement operation process is completely guided by the navigation process interface, which can minimize the manual input of personnel and reduce the inconvenience of measurement personnel wearing protective equipment and gloves underground. The settings of various parameters in the measurement process are set step by step according to the process of the navigation interface and displayed step by step. Such a process not only ensures the correctness of the measurement orientation, but also ensures that the measurement process is accurate, convenient and efficient. The measurement parameter confirmation process is shown in Table 2, where some areas are automatic settings for business navigation and some are manual operations for measurement personnel. It can be seen from the table that after the parameters are set, the measurement personnel's operation is only to confirm the measurement results and add notes to the current data, which greatly simplifies the complicated parameter setting process of measurement personnel and improves the measurement efficiency. At the same time, the system software of the spectrum analyzer integrates the measurement data results of typical equipment, which can be compared with the current equipment measurement indication to determine the correctness of the measured spectrum. When there is a large error, it will give a prompt whether further supplementary measurement is needed to ensure the accuracy of the measurement.

[0074] Table 2

[0075]

[0076] The measurement and analysis method based on the portable downhole electromagnetic interference measurement equipment implemented in the present invention can improve the measurement efficiency and ensure the accuracy of the measurement. It can also guide the test personnel to perform on-site measurement operations, and electronically record the relevant measurement information and synchronize it with the measurement map, solving the problem of inconvenient handwritten records underground. Business navigation standardizes operations, avoids information loss, improves work efficiency, and extends the effective use time of the instrument.

[0077] In order to implement the above embodiment, Fig. 9 As shown, this embodiment also provides a measurement and analysis system based on a portable downhole electromagnetic disturbance measurement device, including:

[0078] The measurement interface entry module 100 is used to enter the measurement interface of the portable downhole electromagnetic disturbance measurement device;

[0079] The measurement frequency band determination module 200 is used to determine the signal measurement frequency band when the test item determined in the measurement interface is radiation emission;

[0080] The working mode determination module 300 is used to confirm the working mode of the device under test after selecting the signal measurement frequency band;

[0081] The background noise measurement module 400 is used to measure the background noise of the environment in which the device under test is located when the device under test is in the shutdown mode, and to perform numerical measurement according to a preset measurement orientation to obtain a corresponding background noise measurement result; wherein the measurement orientation is determined based on the contour recognition result and the centerline angle of the image taken by the device under test.

[0082] Furthermore, the background noise measurement module 400 is also used for:

[0083] The image captured by the device under test is analyzed and processed by an image recognition method based on color segmentation and edge detection, and the corresponding device under test is matched in the scene model library to obtain the contour recognition result of the device under test, and display the angle, distance and height information required to be measured;

[0084] The contour recognition result is aligned with the actual device under test to determine the centerline position, and the measurement direction is determined according to the centerline angle displayed in the image captured by the device under test, and the actual measured angle, distance and height information are determined according to the infrared ranging function of the host camera.

[0085] Furthermore, the working mode of the device under test also includes a standby mode and an operating mode; and further includes: a radiation signal measurement module, which is used to:

[0086] When the device under test is in standby mode and operating mode, the radiation signal of the device under test in the working state is measured; the measurement objects include the device under test body and the cable of the device under test.

[0087] Furthermore, the radiation signal measurement module is also used for:

[0088] When the measurement object is the main body of the device under test, the signal measurement frequency band to be measured is selected according to the preset measurement orientation, the measurement distance and measurement height of the spectrum analyzer are confirmed, and the spectrum analyzer is adjusted so that the antenna measures the radiation signal of the working state of the main body of the device under test in the horizontal polarization and vertical polarization directions in turn to obtain a first signal measurement result;

[0089] When the measurement object is a cable of the device under test, after confirming the properties of the cable, the radiation signal of the cable working state is measured according to a preset measurement distance to obtain a second signal measurement result.

[0090] Furthermore, before the measurement interface enters module 100, it also includes: an image shooting module, which is used to:

[0091] Select the test scenario according to the prompts of the portable downhole electromagnetic disturbance measurement equipment;

[0092] Outputting a list of devices in the corresponding test scenario based on the selected test scenario;

[0093] Select the device under test in the device list, and use the host camera to output the image captured by the device under test.

[0094] The measurement and analysis system based on the portable downhole electromagnetic interference measurement equipment implemented by the present invention can improve the measurement efficiency and ensure the accuracy of the measurement. It can also guide the test personnel to perform on-site measurement operations, and electronically record the relevant measurement information and synchronize it with the measurement map, solving the problem of inconvenient handwritten records underground. Business navigation standardizes operations, avoids information loss, improves work efficiency, and extends the effective use time of the instrument.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A measurement and analysis method based on a portable downhole electromagnetic disturbance measurement device, characterized in that: The method comprises: Enter the measurement interface of the portable downhole electromagnetic disturbance measurement equipment; When the test item determined in the measurement interface is radiated emission, determine the signal measurement frequency band; Confirm the working mode of the device under test after selecting the signal measurement frequency band; When the device under test is in shutdown mode, the background noise of the environment in which the device under test is located is measured, and numerical measurements are performed according to a preset measurement orientation to obtain corresponding background noise measurement results; wherein the measurement orientation is determined based on the contour recognition result and the midline angle of the image captured by the device under test; Wherein, determining the measurement orientation of the device under test based on the contour recognition result and the midline angle of the image captured by the device under test includes: The image captured by the device under test is analyzed and processed by an image recognition method based on color segmentation and edge detection, and the corresponding device under test is matched in the scene model library to obtain the contour recognition result of the device under test, and display the angle, distance and height information required to be measured; The contour recognition result is aligned with the actual device under test to determine the centerline position, and the measurement direction is determined according to the centerline angle displayed in the image captured by the device under test, and the actual measured angle, distance and height information are determined according to the infrared ranging function of the host camera.

2. The method according to claim 1, characterized in that The working mode of the device under test further includes a standby mode and an operating mode; the method further includes: When the device under test is in standby mode and operating mode, the radiation signal of the device under test in the working state is measured; the measurement objects include the device under test body and the cable of the device under test.

3. The method according to claim 2, characterized in that When the measurement object is the main body of the device under test, the signal measurement frequency band to be measured is selected according to the preset measurement orientation, the measurement distance and measurement height of the spectrum analyzer are confirmed, and the spectrum analyzer is adjusted so that the antenna measures the radiation signal of the working state of the main body of the device under test in the horizontal polarization and vertical polarization directions in turn to obtain a first signal measurement result; When the measurement object is a cable of the device under test, after confirming the properties of the cable, the radiation signal of the cable working state is measured according to a preset measurement distance to obtain a second signal measurement result.

4. The method according to claim 3, characterized in that Before entering the measurement interface of the portable downhole electromagnetic disturbance measurement device, the method further includes: Select the test scenario according to the prompts of the portable downhole electromagnetic disturbance measurement equipment; Outputting a list of devices in the corresponding test scenario based on the selected test scenario; Select the device under test in the device list, and use the host camera to output the image captured by the device under test.

5. A measurement and analysis system based on a portable downhole electromagnetic disturbance measurement device, characterized in that: include: A measurement interface entry module is used to enter the measurement interface of a portable downhole electromagnetic disturbance measurement device; A measurement frequency band determination module, used to determine a signal measurement frequency band when the test item determined in the measurement interface is radiation emission; A working mode determination module, used to confirm the working mode of the device under test after selecting the signal measurement frequency band; A background noise measurement module is used to measure the background noise of the environment in which the device under test is located when the device under test is in shutdown mode, and to perform numerical measurement according to a preset measurement orientation to obtain a corresponding background noise measurement result; wherein the measurement orientation is determined based on the contour recognition result and the midline angle of the image taken by the device under test; The background noise measurement module is also used for: The image captured by the device under test is analyzed and processed by an image recognition method based on color segmentation and edge detection, and the corresponding device under test is matched in the scene model library to obtain the contour recognition result of the device under test, and display the angle, distance and height information required to be measured; The contour recognition result is aligned with the actual device under test to determine the centerline position, and the measurement direction is determined according to the centerline angle displayed in the image captured by the device under test, and the actual measured angle, distance and height information are determined according to the infrared ranging function of the host camera.

6. The system according to claim 5, characterized in that The working mode of the device under test also includes a standby mode and an operating mode; and further includes: a radiation signal measurement module for: When the device under test is in standby mode and operating mode, the radiation signal of the device under test in the working state is measured; the measurement objects include the device under test body and the cable of the device under test.

7. The system according to claim 6, characterized in that The radiation signal measurement module is further used for: When the measurement object is the main body of the device under test, the signal measurement frequency band to be measured is selected according to the preset measurement orientation, the measurement distance and measurement height of the spectrum analyzer are confirmed, and the spectrum analyzer is adjusted so that the antenna measures the radiation signal of the working state of the main body of the device under test in the horizontal polarization and vertical polarization directions in turn to obtain a first signal measurement result; When the measurement object is a cable of the device under test, after confirming the properties of the cable, the radiation signal of the cable working state is measured according to a preset measurement distance to obtain a second signal measurement result.

8. The system according to claim 5, characterized in that Before entering the module in the measurement interface, it also includes: an image capture module, which is used to: Select the test scenario according to the prompts of the portable downhole electromagnetic disturbance measurement equipment; Outputting a list of devices in the corresponding test scenario based on the selected test scenario; Select the device under test in the device list, and use the host camera to output the image captured by the device under test.

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