Switch cabinet condensation monitoring method and device, electronic equipment and storage medium

Abstract

The invention provides a switch cabinet condensation monitoring method and device, electronic equipment and a storage medium, and relates to the technical field of power monitoring. Laser is used for scanning a condensation monitoring area at the top of a switch cabinet; wherein the laser can generate different types of optical signals according to the surface state of the condensation monitoring area, receive the optical signals, collect light intensity information of the optical signals and judge whether the condensation monitoring area is condensed or not; detecting the first receiving time of the specular reflection light, the second receiving time of the refracted light, the incident angle of the specular reflection light and the refraction angle of the refracted light, and determining the thickness of the water drop; operation and maintenance responses of different priorities are carried out according to whether the condensation monitoring area is condensed or not and the water drop thickness. Therefore, by collecting the light intensity of the reflected light and calculating the thickness of the water drops, the condensation occurrence condition in the switch cabinet is accurately reflected, the condensation monitoring accuracy is improved, and meanwhile, the device and the method are also used for comprehensive early warning and assisting efficient maintenance work.

Description

Technical Field

[0001] The present application relates to the field of power monitoring technology, and in particular to a switch cabinet condensation monitoring method, device, electronic equipment and storage medium. Background Art

[0002] In the stable operation of the power system, the switchgear plays a vital role, and the stability of its internal environment is directly related to the safety and life of the power equipment. Condensation is a common problem inside the switchgear, which may lead to serious consequences such as short circuit of electrical equipment and degradation of insulation performance. Therefore, accurate warning and timely treatment of condensation are key links to ensure the reliable operation of the power system.

[0003] At present, the condensation is mainly judged by whether the temperature and humidity exceed the safety threshold. However, the conditions for the occurrence of condensation are very complex and not simply corresponding to the temperature or humidity. The existing judgment method blindly determines the temperature and humidity safety threshold and cannot determine the danger level of condensation at the current temperature and humidity, and the judgment effect may not be ideal. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a switch cabinet condensation monitoring method, device, electronic device and storage medium, which can accurately reflect the occurrence of condensation inside the switch cabinet by collecting the two dimensions of reflected light intensity and calculating the thickness of water droplets, thereby improving the accuracy of condensation monitoring.

[0005] In a first aspect, an embodiment of the present application provides a switch cabinet condensation monitoring method, the method comprising the following steps:

[0006] The condensation monitoring area on the top of the switch cabinet is scanned by using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets;

[0007] Receive the optical signal, collect light intensity information of the optical signal, detect a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light;

[0008] Based on the light intensity information, determine whether condensation occurs in the condensation monitoring area, and determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle, and the refraction angle; and perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

[0009] In some embodiments, the step of scanning the condensation monitoring area on the top of the switch cabinet by using a laser comprises the following steps:

[0010] Pre-select a condensation monitoring area on the top of the switch cabinet, and grid the condensation monitoring area to divide it into multiple sub-areas;

[0011] A laser source with a set power is selected to perform laser scanning on the condensation monitoring area in a planar light form to evenly cover each of the divided sub-areas.

[0012] In some embodiments, the light intensity information of the light signal is collected in the following manner:

[0013] The light intensity of the laser scanning area per unit time is represented by the following matrix:

[0014]

[0015] The condensation monitoring area is divided into mn sub-areas with m rows and n columns, where the sub-area in the laser scanning area within a unit time is represented by S 11 -S xy , I xy Indicates that the sub-region is S xy Light intensity;

[0016] Calculate the mean of matrix A And calculate the mean of each element in matrix A The squared difference And calculate the average value of the square difference to get the variance of matrix A It represents the average light intensity of the laser scanning area per unit time.

[0017] In some embodiments, judging whether condensation occurs in the condensation monitoring area based on the light intensity information comprises the following steps:

[0018] If the average light intensity of the laser scanning area within the unit time is greater than the set light intensity threshold, it is determined that condensation has occurred in the laser scanning area within the unit time;

[0019] Count the number of sub-areas contained in all condensed laser scanning areas;

[0020] The condensation range of the switch cabinet is calculated based on the counted number of sub-areas where condensation occurs and the number of all sub-areas divided into the condensation monitoring area.

[0021] In some embodiments, determining the thickness of the water drop based on the first receiving time, the second receiving time, the incident angle, and the refraction angle comprises the following steps:

[0022] Calculating the time difference between the mirror reflected light and the refracted light according to the first receiving time and the second receiving time, and determining the propagation time of the laser in the water droplets based on the time difference;

[0023] Determine the propagation distance of the laser in the water droplets according to the propagation time and propagation speed of the laser in the water droplets;

[0024] The thickness of the water drop is determined according to the propagation distance and the refraction angle.

[0025] In some embodiments, the emission angle of the laser is determined as the incident angle of the mirror reflected light, and the refraction angle of the refracted light is determined according to the incident angle of the mirror reflected light and the refractive index of water; the propagation time of the laser in the water droplets is calculated by the following formula t=(t2-t1) / 2, wherein t1 represents the first receiving time and t2 represents the second receiving time; the thickness of the water droplets is calculated by the formula d=s*cosα, wherein s represents the propagation distance, α represents the refraction angle, and the refraction angle satisfies n1sinβ=n2sinα, n1 represents the refractive index of air, n2 represents the refractive index of water, and β represents the incident angle of the mirror reflected light.

[0026] In some embodiments, the operation and maintenance response with different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets includes the following steps:

[0027] When the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is less than the set second threshold, a low-priority operation and maintenance response is performed;

[0028] When the condensation range of the switch cabinet is greater than the set first threshold and the water drop thickness is less than the set second threshold, a medium priority operation and maintenance response is determined;

[0029] When the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is greater than the set second threshold, a high-priority operation and maintenance response is determined.

[0030] In a second aspect, an embodiment of the present application provides a switch cabinet condensation monitoring device, the device comprising:

[0031] A scanning module, used to scan the condensation monitoring area on the top of the switch cabinet using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets;

[0032] A collection module, used to receive the optical signal, collect light intensity information of the optical signal, detect a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light;

[0033] A judgment module is used to judge whether condensation occurs in the condensation monitoring area based on the light intensity information, and to determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle; and to perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

[0034] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory through the bus, and when the machine-readable instructions are executed by the processor, the steps of the switch cabinet condensation monitoring method as described in any one of the first aspects are performed.

[0035] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the switch cabinet condensation monitoring method described in any one of the above-mentioned first aspects are executed.

[0036] The present application discloses a switch cabinet condensation monitoring method, device, electronic device and storage medium, which uses a laser to scan the condensation monitoring area on the top of the switch cabinet; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, mirror reflection light generated by irradiating the surface of water droplets, and refracted light passing through water droplets; receiving the optical signal, and collecting the light intensity information of the optical signal, detecting the first receiving time of the mirror reflection light and the second receiving time of the refracted light, as well as the incident angle of the mirror reflection light and the refraction angle of the refracted light; judging whether the condensation monitoring area is condensed based on the light intensity information, and determining the thickness of the water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle; and performing operation and maintenance responses of different priorities according to whether the condensation monitoring area is condensed and the thickness of the water droplets. Thus, by collecting the two dimensions of reflected light intensity and calculating the water droplet thickness, the condensation occurrence inside the switch cabinet can be accurately reflected, and the accuracy of condensation monitoring can be improved, and it can also be used for comprehensive early warning to help efficient maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A flow chart of a switch cabinet condensation monitoring method according to an embodiment of the present application is shown;

[0039] Figure 2 A schematic diagram showing a gridding of the condensation monitoring area in an embodiment of the present application is shown;

[0040] Figure 3 A schematic diagram showing a comparison of light intensity distribution when condensation occurs and when condensation does not occur on the top of the switch cabinet according to an embodiment of the present application is shown;

[0041] Figure 4 A schematic diagram showing the specular reflected light generated by irradiating the surface of water droplets and the refracted light passing through the water droplets in an embodiment of the present application;

[0042] Figure 5 A schematic diagram showing the comparison of no condensation, fine mist condensation and large water drop condensation on the top of the switch cabinet in the embodiment of the present application;

[0043] Figure 6 A schematic diagram of the structure of the switch cabinet condensation monitoring device according to an embodiment of the present application is shown;

[0044] Figure 7 A structural block diagram of an electronic device described in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0045] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0046] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0047] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0048] In view of the technical problems raised by the background technology, the present application provides a switch cabinet condensation monitoring method, device, electronic device and storage medium, which can accurately reflect the occurrence of condensation inside the switch cabinet by collecting the two dimensions of reflected light intensity and calculating the thickness of water droplets, thereby improving the accuracy of condensation monitoring.

[0049] See the instruction manual Figure 1 , a switch cabinet condensation monitoring method provided in an embodiment of the present application includes the following steps:

[0050] S1. Scanning the condensation monitoring area on the top of the switch cabinet using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets;

[0051] S2, receiving the optical signal, collecting light intensity information of the optical signal, detecting a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light;

[0052] S3. Determine whether condensation occurs in the condensation monitoring area based on the light intensity information, and determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle, and the refraction angle; and perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

[0053] Specifically, in step S1, a condensation monitoring area can be selected in advance on the top of the switch cabinet, and the condensation monitoring area can be gridded and divided into multiple sub-areas; a laser source with a set power is selected to perform laser scanning on the condensation monitoring area in the form of planar light to evenly cover each divided sub-area.

[0054] See the instruction manual Figure 2In one embodiment, a certain area on the top of the switch cabinet is first selected as the laser scanning area, that is, the condensation monitoring area. This selection is based on the fact that condensation inside the switch cabinet is usually more likely to occur at the top and other locations, and it is relatively convenient for laser scanning operations. The selected top area is divided into mn sub-areas with m rows and n columns at intervals of 1 cm, which correspond to S 11 -S xy . This grid-based division method enables laser scanning to detect each small area more targeted and systematically, which facilitates the subsequent precise positioning and analysis of condensation conditions at different locations. Preferably, a red laser with a power between 5mW and 10mW is used for scanning. The main consideration for selecting a red laser with this power range is to ensure that the laser has sufficient intensity to penetrate the interference factors such as water vapor and dust that may exist in the switch cabinet, so that the light can effectively generate detectable reflected light and refracted light in each area, while the laser power cannot be too high to avoid potential damage to the electrical components inside the switch cabinet, such as causing local overheating, photochemical effects and other adverse effects. And scanning in the form of plane light can ensure that the laser beam covers each divided sub-area more evenly during the scanning process to a certain extent, making the scanning result more accurate and repeatable. Compared with other forms of laser beams, plane light can reduce the situation of over-scanning or under-scanning of certain areas due to reasons such as light focusing or divergence, thereby improving the reliability of condensation detection during the entire scanning process. The scanning rate can be set according to application requirements, for example, set to 1 column per second. If the scanning rate is too fast, the optical signal collection of some sub-areas may be incomplete or inaccurate; if the scanning rate is too slow, the entire scanning process will take too long, which is not conducive to timely obtaining the condensation situation and making corresponding operation and maintenance decisions.

[0055] In step S2, the image acquisition unit can be used to collect the diffuse reflection light emitted by the laser through the scanning area, the specular reflection light generated by irradiating the water drop surface, and the refracted light passing through the water drop. Figure 3 When the switch cabinet does not condense, the laser will be diffusely reflected due to dust and tiny particles in the air and the rough metal surface. The characteristic of diffusely reflected light is that the light is scattered in all directions, and its light intensity distribution is relatively uniform but the overall intensity is weak. When the switch cabinet condenses, the laser will be reflected by the surface of the water droplets. The characteristic of the mirror reflection light is that it has strong directionality and the light intensity is relatively concentrated. In addition, when the switch cabinet condenses, the laser will penetrate the water droplets and refract, generating refracted light. The propagation path of the refracted light will change due to factors such as the size of the water droplets and the refractive index.

[0056] In one embodiment, the light intensity information of the light signal collected by the image collection unit is calculated in the following manner:

[0057] The light intensity of the laser scanning area within a unit time (for example, one second) can be expressed in a matrix as:

[0058]

[0059] Among them, the sub-area in the laser scanning area within the unit time is represented by S 11 -S xy , I xy Indicates that the sub-region is S xy light intensity; at this time, the average light intensity of the laser scanning area within a unit time (for example, one second) can be represented by the variance of matrix A. Among them, the variance is a statistic that reflects the degree of discreteness of a set of data. In this application, the variance of matrix A represents the dispersion of the light intensity values ​​in the laser scanning area within a unit time relative to the average light intensity. If the variance is small, it means that the light intensity values ​​are relatively uniform in each area, which means that the medium state in the area is relatively consistent; conversely, if the variance is large, it means that there are large differences in light intensity values ​​between different areas, which means that there are some factors in the area that will cause uneven light intensity distribution, such as the occurrence of condensation.

[0060] When calculating the variance of matrix A, first calculate the mean of matrix A Next, calculate the square of the difference between each element in matrix A and the mean Finally, the average of these squared differences is calculated to obtain the variance of matrix A

[0061] In addition, in the present application, in addition to collecting the light intensity information of the light signal, the image acquisition unit also detects the first receiving time t1 of the mirror reflected light and the second receiving time t2 of the refracted light, and determines the reflection angle corresponding to the detection light according to the incident angle set by the laser detection light, and determines the corresponding refraction angle according to the incident angle of the detection light.

[0062] In step S3, judging whether condensation occurs in the condensation monitoring area based on the light intensity information includes the following steps: judging whether condensation occurs in the laser scanning area within the unit time if the average light intensity of the laser scanning area within the unit time is greater than the set light intensity threshold; counting the number of sub-areas contained in all condensed laser scanning areas; and calculating the condensation range of the switch cabinet based on the counted number of sub-areas where condensation occurs and the number of all sub-areas divided in the condensation monitoring area.

[0063] In one embodiment, based on the recognition of the characteristic that condensation will cause changes in light intensity distribution and a large number of experiments, the light intensity threshold is set to 1.5. When the average light intensity of the laser scanning area within a unit time is greater than 1.5, it indicates that condensation has occurred in the laser scanning area within the unit time. After completing all scans of the condensation monitoring area on the top of the switch cabinet, the number of sub-areas in the laser scanning area within the unit time where condensation has occurred is counted, and then the condensation range of the switch cabinet is determined according to the proportion of the number of bright sub-areas (condensation sub-areas) to the number of all sub-areas in the condensation monitoring area on the top of the switch cabinet, providing an important basis for subsequent operation and maintenance work. For example, the number of all sub-areas in the condensation monitoring area on the top of the switch cabinet is m*n=100*100=10000, and the number of sub-areas where condensation has occurred is 500, then the condensation range of the switch cabinet is 500 / 10000=5%.

[0064] See the instruction manual Figure 4 When calculating the thickness of water droplets, the image acquisition unit is responsible for receiving the reflected light from the laser source detection light after being reflected by the surface of the water droplets. When the laser detection light irradiates the surface of the water droplets, part of the light will be reflected according to the law of reflection to form the target reflected light, which is then captured by the image acquisition unit and its corresponding receiving time point t1, i.e. the first receiving time, is recorded; at the same time, part of the detection light will be refracted through the surface of the water droplets into the water droplets, and after being reflected in the water droplets, it will be refracted through the water surface to form the target refracted light. The refracted light of this complex path will also be received by the image acquisition unit and its corresponding receiving time point t2, i.e. the second receiving time, will be determined.

[0065] Furthermore, according to the difference between the receiving time point t1 corresponding to the target reflected light and the receiving time point t2 corresponding to the target refracted light, the propagation time of the detection light in the water droplets is determined, and according to the propagation time and propagation speed of the detection light in the water droplets, the propagation distance s=(t2-t1)v of the detection light in the water droplets and the one-way propagation distance 0.5s are determined (here, the distance of the detection light refracted into the water droplets through the water droplets is regarded as equal to the distance of the detection light refracted out through the water surface after being reflected in the water droplets); wherein the propagation speed v of the optical signal in water is 2.25×108m / s. In addition, according to the refractive index of air (the refractive index of air is set to 1 in engineering optics), the refractive index of water (the refractive index of water is 1.3330) and the incident angle β of the laser source detection light, the refraction angle α corresponding to the detection light is determined: n1sinβ=n2sinα, wherein n1 represents the refractive index of air, which is set to 1 here; n2 represents the refractive index of water, which is set to 1 here. According to the refraction angle α and the propagation distance s, the water drop thickness information is determined: cos α = d / 0.5s.

[0066] After obtaining the condensation range and water drop thickness of the switch cabinet, the corresponding judgment results and related detailed data are uploaded to the host. After receiving this information, the host will display it to the operation and maintenance personnel in an intuitive way, such as generating a condensation monitoring report, drawing a condensation distribution map, etc. Based on this information, the operation and maintenance personnel can formulate and implement corresponding maintenance measures in a timely manner, such as starting the dehumidification equipment, checking the status of electrical components, etc., to ensure the safe and stable operation of the switch cabinet and effectively prevent problems caused by condensation.

[0067] In one embodiment, the operation and maintenance response level is divided into three priorities, low, medium, and high. Among them, when the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is less than the set second threshold, a low priority operation and maintenance response is performed; when the condensation range of the switch cabinet is greater than the set first threshold and the water drop thickness is less than the set second threshold, a medium priority operation and maintenance response is determined; when the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is greater than the set second threshold, a high priority operation and maintenance response is determined.

[0068] See the instruction manual Figure 5 For example, the first threshold of the condensation range of the switch cabinet is set to 25%, and the second threshold of the water drop thickness is set to 2mm. When the condensation range of the switch cabinet is less than 25% and the water drop thickness is less than 2mm, it means that there is no obvious bright area in the condensation monitoring area on the top of the switch cabinet, no condensation occurs, and the system alarm is not triggered; when the condensation range of the switch cabinet is greater than 25% and the water drop thickness is less than 2mm, it means that there is a large area of ​​fine water mist in the condensation monitoring area on the top of the switch cabinet, which is the initial stage of condensation formation, and the alarm is triggered and the condensation occurs. When the condensation range of the switch cabinet is less than 25% and the water drop thickness is greater than 2mm, it means that large water droplets are formed in the condensation monitoring area on the top of the switch cabinet, which is the later stage of condensation, and the system alarm and record are activated, and a text message is sent to notify the operation and maintenance personnel to handle it in time.

[0069] It can be seen that the switch cabinet condensation monitoring method provided in the present application can more accurately monitor and identify different forms of condensation phenomena in the switch cabinet by collecting the two dimensions of reflected light intensity and calculating the thickness of water droplets, and promptly notify the operation and maintenance personnel to take corresponding maintenance measures to ensure the normal operation of the switch cabinet and effectively prevent various electrical faults caused by condensation.

[0070] Based on the same inventive concept, a switch cabinet condensation monitoring device is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the above-mentioned switch cabinet condensation monitoring method, device, electronic device and storage medium in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0071] As the instruction manual Figure 6As shown, the present application also provides a switch cabinet condensation monitoring device, the device comprising:

[0072] The scanning module 601 is used to scan the condensation monitoring area on the top of the switch cabinet by using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets;

[0073] A collection module 602 is used to receive the optical signal, collect light intensity information of the optical signal, detect a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light;

[0074] The judgment module 603 is used to judge whether condensation occurs in the condensation monitoring area based on the light intensity information, and to determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle; and to perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

[0075] In some embodiments, the scanning module 601 uses a laser to scan the condensation monitoring area on the top of the switch cabinet, including: selecting a condensation monitoring area on the top of the switch cabinet in advance, and gridding the condensation monitoring area to divide it into multiple sub-areas; selecting a laser source with a set power to perform laser scanning on the condensation monitoring area in the form of planar light to evenly cover each divided sub-area.

[0076] In some embodiments, the acquisition module 602 acquires the light intensity information of the light signal including: representing the light intensity of the laser scanning area within a unit time by the following matrix:

[0077]

[0078] The condensation monitoring area is divided into mn sub-areas with m rows and n columns, where the sub-area in the laser scanning area within a unit time is represented by S 11 -S xy , I xy Indicates that the sub-region is S xy Light intensity;

[0079] Calculate the mean of matrix A And calculate the mean of each element in matrix A The squared difference And calculate the average value of the square difference to get the variance of matrix A It represents the average light intensity of the laser scanning area per unit time.

[0080] In some embodiments, the judgment module 603 judges whether condensation occurs in the condensation monitoring area based on the light intensity information, including: if the average light intensity of the laser scanning area within a unit time is greater than a set light intensity threshold, judging that condensation occurs in the laser scanning area within the unit time; counting the number of sub-areas contained in all condensed laser scanning areas; and calculating the condensation range of the switch cabinet based on the counted number of sub-areas where condensation occurs and the number of all sub-areas divided in the condensation monitoring area.

[0081] In some embodiments, the judgment module 603 determines the thickness of the water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle, including: calculating the time difference between the mirror reflected light and the refracted light according to the first receiving time and the second receiving time, and determining the propagation time of the laser in the water droplets based on the time difference; determining the propagation distance of the laser in the water droplets according to the propagation time and propagation speed of the laser in the water droplets; and determining the thickness of the water droplets according to the propagation distance and the refraction angle. Among them, the emission angle of the laser is determined as the incident angle of the mirror reflected light, and the refraction angle of the refracted light is determined according to the incident angle of the mirror reflected light and the refractive index of water; the propagation time of the laser in the water droplets is calculated by the following formula t=(t2-t1) / 2, wherein t1 represents the first receiving time and t2 represents the second receiving time; the thickness of the water droplets is calculated by the formula d=s*cosα, wherein s represents the propagation distance, α represents the refraction angle, and the refraction angle satisfies n1sinβ=n2sinα, n1 represents the refractive index of air, n2 represents the refractive index of water, and β represents the incident angle of the mirror reflected light.

[0082] In some embodiments, the judgment module 603 performs operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of the water droplets, including: when the condensation range of the switch cabinet is less than the set first threshold and the water droplet thickness is less than the set second threshold, a low-priority operation and maintenance response is performed; when the condensation range of the switch cabinet is greater than the set first threshold and the water droplet thickness is less than the set second threshold, a medium-priority operation and maintenance response is determined; when the condensation range of the switch cabinet is less than the set first threshold and the water droplet thickness is greater than the set second threshold, a high-priority operation and maintenance response is determined.

[0083] The present application provides a switch cabinet condensation monitoring device, which uses a laser to scan the condensation monitoring area on the top of the switch cabinet through a scanning module; wherein the laser generates different types of light signals according to the surface state of the condensation monitoring area, and the types of the light signals include diffuse reflection light, mirror reflection light generated by irradiating the surface of water droplets, and refracted light passing through water droplets; the light signal is received by the acquisition module, and the light intensity information of the light signal is acquired, and the first receiving time of the mirror reflection light and the second receiving time of the refracted light, as well as the incident angle of the mirror reflection light and the refraction angle of the refracted light are detected; the judgment module determines whether the condensation monitoring area is condensed based on the light intensity information, and determines the thickness of the water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle; and performs operation and maintenance responses of different priorities according to whether the condensation monitoring area is condensed and the thickness of the water droplets. Thus, by acquiring the two dimensions of reflected light intensity and calculating the water droplet thickness, the condensation occurrence inside the switch cabinet can be accurately reflected, and the accuracy of condensation monitoring can be improved, and it can also be used for comprehensive early warning to help efficient maintenance work.

[0084] Based on the same concept of the present invention, the specification is attached Figure 7 As shown, the structure of an electronic device 700 provided in an embodiment of the present application includes: at least one processor 701, at least one network interface 704 or other user interface 703, a memory 705, and at least one communication bus 702. The communication bus 702 is used to realize the connection and communication between these components. The electronic device 700 optionally includes a user interface 703, including a display (for example, a touch screen, LCD, CRT, holographic imaging (Holographic) or projection (Projector), etc.), a keyboard or a pointing device (for example, a mouse, a trackball (trackball), a touch pad or a touch screen, etc.).

[0085] The memory 705 may include a read-only memory and a random access memory, and provides instructions and data to the processor 701. A portion of the memory 705 may also include a non-volatile random access memory (NVRAM).

[0086] In some embodiments, the memory 705 stores the following elements, which may be protected modules or data structures, or a subset thereof, or an extended set thereof:

[0087] Operating system 7051, including various system programs for implementing various basic services and processing hardware-based tasks;

[0088] The application module 7052 includes various application programs, such as a launcher, a media player, a browser, etc., which are used to implement various application services.

[0089] In an embodiment of the present application, by calling the program or instructions stored in the memory 705, the processor 701 is used to execute steps in a switch cabinet condensation monitoring method, device, electronic device and storage medium. By collecting the two dimensions of reflected light intensity and calculating the water droplet thickness, it can accurately reflect the occurrence of condensation inside the switch cabinet and improve the accuracy of condensation monitoring.

[0090] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the switch cabinet condensation monitoring method are executed.

[0091] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, the above-mentioned switch cabinet condensation monitoring method can be executed.

[0092] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0093] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0094] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0095] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0096] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A switch cabinet condensation monitoring method, characterized in that: The method comprises the following steps: The condensation monitoring area on the top of the switch cabinet is scanned by using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets; Receive the optical signal, collect light intensity information of the optical signal, detect a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light; Based on the light intensity information, determine whether condensation occurs in the condensation monitoring area, and determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle, and the refraction angle; and perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

2. A switch cabinet condensation monitoring method according to claim 1, characterized in that: The method of scanning the condensation monitoring area on the top of the switch cabinet by using a laser comprises the following steps: Pre-select a condensation monitoring area on the top of the switch cabinet, and grid the condensation monitoring area to divide it into multiple sub-areas; A laser source with a set power is selected to perform laser scanning on the condensation monitoring area in a planar light form to evenly cover each of the divided sub-areas.

3. A switch cabinet condensation monitoring method according to claim 2, characterized in that: The light intensity information of the optical signal is collected in the following manner: The light intensity of the laser scanning area per unit time is represented by the following matrix: The condensation monitoring area is divided into mn sub-areas with m rows and n columns, where the sub-area in the laser scanning area within a unit time is represented by S 11 -S xy , I xy Indicates that the sub-region is S xy Light intensity; Calculate the mean of matrix A And calculate the mean of each element in matrix A The squared difference And calculate the average value of the square difference to get the variance of matrix A It represents the average light intensity of the laser scanning area per unit time.

4. A switch cabinet condensation monitoring method according to claim 3, characterized in that: The step of judging whether condensation occurs in the condensation monitoring area based on the light intensity information comprises the following steps: If the average light intensity of the laser scanning area within the unit time is greater than the set light intensity threshold, it is determined that condensation has occurred in the laser scanning area within the unit time; Count the number of sub-areas contained in all condensed laser scanning areas; The condensation range of the switch cabinet is calculated based on the counted number of sub-areas where condensation occurs and the number of all sub-areas divided into the condensation monitoring area.

5. A switch cabinet condensation monitoring method according to claim 4, characterized in that: The method of determining the thickness of the water drop based on the first receiving time, the second receiving time, the incident angle and the refraction angle comprises the following steps: Calculating the time difference between the mirror reflected light and the refracted light according to the first receiving time and the second receiving time, and determining the propagation time of the laser in the water droplets based on the time difference; Determine the propagation distance of the laser in the water droplets according to the propagation time and propagation speed of the laser in the water droplets; The thickness of the water drop is determined according to the propagation distance and the refraction angle.

6. A switch cabinet condensation monitoring method according to claim 5, characterized in that: in, The emission angle of the laser is determined as the incident angle of the mirror reflected light, and the refraction angle of the refracted light is determined according to the incident angle of the mirror reflected light and the refractive index of water; the propagation time of the laser in the water droplets is calculated by the following formula t=(t2-t1) / 2, wherein t1 represents the first receiving time and t2 represents the second receiving time; the thickness of the water droplets is calculated by the formula d=s*cosα, wherein s represents the propagation distance, α represents the refraction angle, and the refraction angle satisfies n1sinβ=n2sinα, n1 represents the refractive index of air, n2 represents the refractive index of water, and β represents the incident angle of the mirror reflected light.

7. A switch cabinet condensation monitoring method according to claim 6, characterized in that: The operation and maintenance response with different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water drops comprises the following steps: When the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is less than the set second threshold, a low-priority operation and maintenance response is performed; When the condensation range of the switch cabinet is greater than the set first threshold and the water drop thickness is less than the set second threshold, a medium priority operation and maintenance response is determined; When the condensation range of the switch cabinet is less than the set first threshold and the water drop thickness is greater than the set second threshold, a high-priority operation and maintenance response is determined.

8. A switch cabinet condensation monitoring device, characterized in that: The device comprises: A scanning module, used to scan the condensation monitoring area on the top of the switch cabinet using a laser; wherein the laser generates different types of optical signals according to the surface state of the condensation monitoring area, and the types of optical signals include diffuse reflection light, specular reflection light generated by irradiating the surface of water droplets, and refracted light passing through the water droplets; A collection module, used to receive the optical signal, collect light intensity information of the optical signal, detect a first receiving time of the mirror reflected light and a second receiving time of the refracted light, as well as an incident angle of the mirror reflected light and a refraction angle of the refracted light; A judgment module is used to judge whether condensation occurs in the condensation monitoring area based on the light intensity information, and to determine the thickness of water droplets based on the first receiving time, the second receiving time, the incident angle and the refraction angle; and to perform operation and maintenance responses of different priorities according to whether condensation occurs in the condensation monitoring area and the thickness of water droplets.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the switch cabinet condensation monitoring method as described in any one of claims 1 to 7 are performed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the switch cabinet condensation monitoring method according to any one of claims 1 to 7 are executed.

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