Focused multi-source decoupled electromagnetic radiation integrated sensing system and method

Abstract

A focused multi-source decoupling electromagnetic radiation integrated sensing system and an electromagnetic radiation source identification method, in the system, a hollow shell is detachably installed on an electromagnetic radiation near field of a multi-source electromagnetic radiation, a guide optical assembly is rotatably arranged in the hollow shell to amplify the light path difference of different radiation sources based on the refraction of the electromagnetic radiation signal; an optical path amplification coefficient teaching knob is arranged on the outside of the hollow shell and connected with the guide optical assembly to adjust the optical path amplification coefficient for decoupling multiple electromagnetic radiation sources; the electromagnetic radiation signal amplified by the guide optical assembly forms a focal point on an exit optical assembly; an antenna array is located on the side of the exit optical assembly away from the entrance optical assembly to detect the electromagnetic radiation signal at the position of the focal point; a subsequent processing circuit is connected with the antenna array through an outlet terminal, and the subsequent processing circuit obtains electromagnetic radiation characteristics based on the electromagnetic radiation signal and maps the radiation source based on the electromagnetic radiation characteristics.

Description

Technical Field

[0001] This invention belongs to the field of non-contact state monitoring technology for power semiconductor devices, and in particular to a focused multi-source decoupled electromagnetic radiation integrated sensing system and an electromagnetic radiation source identification method. Background Technology

[0002] More and more power electronic devices are being used in new power systems, with power semiconductor devices serving as the most fundamental and critical component. How to sense the electrical, thermal, and insulation states of power semiconductor devices throughout their entire lifecycle during practical use has become an important and urgent problem to be solved.

[0003] Existing methods for monitoring the condition of power semiconductor devices include both contact and non-contact methods. Contact methods primarily assess health status by measuring signals such as voltage, current, and temperature in the actual circuit and then using signal processing. However, this method requires measuring numerous signals and installing measuring devices within the actual equipment, making it an invasive detection method that does not meet practical engineering requirements. In engineering practice, measuring a large number of signals can lead to modifications to the overall device design or a decrease in equipment performance, which is unacceptable. Therefore, contact-based solutions are not suitable for engineering practice. Most existing engineering applications use standardized circuits based on transient protection functions. For contact-based status signal sensing solutions, the invasive operation, complex additional hardware circuitry, and interference with actual engineering projects make them difficult to apply in practice.

[0004] Non-contact sensing methods mainly include infrared imaging, spectral imaging, and ultrasound. However, infrared and spectral imaging equipment is not suitable for real-time online monitoring and primarily extracts surface conditions; ultrasound is susceptible to ambient noise and the equipment is expensive. In other words, a truly effective real-time online monitoring solution that meets practical engineering needs is lacking.

[0005] Therefore, the two types of sensing methods mentioned above are not preferred solutions for power semiconductor devices and power electronic devices due to their invasiveness or difficulty in detecting the internal state of objects. There is an urgent need to develop new non-contact online real-time condition monitoring technologies for power semiconductor devices and power electronic devices that meet practical engineering requirements.

[0006] For power semiconductor devices, the rapid rise and fall times of voltage and current, along with high-frequency switching, generate abundant electromagnetic radiation signals. In high-power power electronic devices, power semiconductor devices appear in combination, i.e., power converters. In actual operation, each power switch generates an electromagnetic radiation signal, so the electromagnetic radiation signal of the converter is the result of multi-source coupling of all devices; when considering systems on a larger spatial scale, the electromagnetic radiation signal of the system is the result of multi-source coupling of all converters. Therefore, a problem that must be solved is how to decouple the mutually coupled electromagnetic radiation signals in order to further analyze the state of the specific object of interest.

[0007] When an electromagnetic wave propagates from medium 1 to medium 2, its direction, amplitude, and phase all change. The specific laws governing these changes can be derived from the laws of refraction and reflection of electromagnetic waves and Fresnel's formula. The specific material selection and structural design of the medium depend on its dielectric constant, permeability, and guiding direction. Maxwell's equations unify electricity, magnetism, and light; therefore, light and electromagnetic waves in a general sense are the same concept. This invention refers to the medium that refracts and reflects electromagnetic waves as an optical component, which can be in a solid or liquid state. Summary of the Invention

[0008] To address the technical problem of difficulty in distinguishing electromagnetic radiation sources from multiple devices in practical high-power power electronic devices, this invention provides a focused multi-source decoupled electromagnetic radiation integrated sensing system and an electromagnetic radiation source identification method. Different radiation signals from multiple electromagnetic radiation sources are guided and focused to different focal positions. The focusing effect is twofold: first, it amplifies the differences in optical paths among the multiple coupled radiation sources; second, it increases the signal strength of the detected electromagnetic radiation. The differences in optical paths of the electromagnetic radiation signals decouple the multi-source coupled signals. The decoupled electromagnetic radiation signals are received by antennas at the corresponding focal positions for subsequent signal processing. This allows for the differentiation of single-source signals within the multi-source coupled electromagnetic radiation signals.

[0009] The focused multi-source decoupled electromagnetic radiation integrated sensing system includes:

[0010] A hollow shell, which can be detachably installed with a multi-source electromagnetic radiation near field, the hollow shell including a first end and a second end relative to the first end;

[0011] An entrance optical component is disposed at the first end to introduce electromagnetic radiation signals from multiple sources of electromagnetic radiation.

[0012] A guiding optical component is rotatably disposed within the hollow housing to amplify the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal;

[0013] An optical path magnification factor adjustment knob is located on the outside of the hollow shell and connected to the guiding optical component to adjust the optical path magnification factor in order to decouple multiple electromagnetic radiation sources.

[0014] An exit optical component is located inside the hollow housing and on the side of the guide optical component away from the inlet optical component. The electromagnetic radiation signal amplified by the optical path difference of the guide optical component forms a focal point on the exit optical component.

[0015] An antenna array is located on the side of the exit optics that is away from the entrance optics to detect electromagnetic radiation signals at the location of the focal point;

[0016] The outgoing terminal is located at the second terminal;

[0017] The subsequent processing circuit is connected to the antenna array via the output terminal. The subsequent processing circuit obtains electromagnetic radiation characteristics based on the electromagnetic radiation signal and maps the radiation source based on the electromagnetic radiation characteristics.

[0018] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the multi-source electromagnetic radiation comes from multiple power semiconductor devices, power electronic devices, multi-power devices, and / or multi-power converters.

[0019] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the guiding optical component includes multiple optical elements distributed symmetrically.

[0020] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the optical elements are vertically and rotatably arrayed within the housing.

[0021] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the optical path amplification coefficient adjustment knob rotates to adjust and guide the optical components based on the number of focal points and the intensity of the electromagnetic radiation signal detected by the antenna array.

[0022] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the guiding optical component is movably and rotatably disposed within the hollow housing.

[0023] In the focused multi-source decoupled electromagnetic radiation integrated sensing system, the multi-source electromagnetic radiation comes from a three-phase bridge circuit and an MMC circuit.

[0024] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the size of the entrance optical component is larger than that of the guiding optical component.

[0025] In the aforementioned focused multi-source decoupled electromagnetic radiation integrated sensing system, the outer wall of the hollow shell is provided with an adhesive part for detachable connection.

[0026] Methods for identifying electromagnetic radiation sources in a focused multi-source decoupled electromagnetic radiation integrated sensing system include:

[0027] Step S1: The hollow shell is installed in the near field of the electromagnetic radiation of the multi-source electromagnetic radiation to be measured, and the entrance optical component introduces the electromagnetic radiation signal of the multi-source electromagnetic radiation.

[0028] Step S2: The guiding optical component amplifies the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal. The electromagnetic radiation signal amplified by the optical path differences of the guiding optical component forms a focal point on the exit optical component. The optical path amplification coefficient adjustment knob is rotated to adjust the guiding optical component to decouple multiple electromagnetic radiation sources based on the number of focal points and the intensity of the electromagnetic radiation signal detected by the antenna array.

[0029] Step S3: The antenna array detects the electromagnetic radiation signal at the location of the focal point. The subsequent processing circuit obtains the electromagnetic radiation characteristics based on the electromagnetic radiation signal and identifies the radiation source based on the electromagnetic radiation characteristics.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The focused multi-source decoupled electromagnetic radiation integrated sensing system utilizes optical components to focus different electromagnetic signals from different radiation sources to different focal positions based on optical path differences, which is practical for engineering applications. Based on the analysis of the guiding and focusing characteristics of the optical components, a general strategy for controlling the focal position of multiple radiation sources is presented, improving the adaptability of this invention to various scenarios. Attached Figure Description

[0032] The accompanying drawings illustrate exemplary embodiments of the invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0033] Figure 1 This is a schematic diagram of the single-node principle structure of a focused multi-source decoupled electromagnetic radiation integrated sensing system in one embodiment of the present invention.

[0034] Figure 2 This is a pressure sensor array pattern of a focused multi-source decoupled electromagnetic radiation integrated sensing system according to one embodiment of the present invention. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The technical solution of this invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Unless otherwise stated, the exemplary embodiments / exemplifications shown are to be understood as providing exemplary features of various details that provide ways in which the technical concept of the invention can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / exemplifications may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concept of the invention.

[0038] Crosshairs and / or shading may be used in the accompanying drawings to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, the dimensions and relative dimensions of components may be exaggerated in the accompanying drawings for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a manner different from the described order of steps. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of the described process. Moreover, the same reference numerals denote the same components.

[0039] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0040] For descriptive purposes, the present invention may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., as in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0041] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0042] See Figures 1 to 2 In one embodiment, the focused multi-source decoupled electromagnetic radiation integrated sensing system of the present invention includes:

[0043] A hollow shell, which can be detachably installed with a multi-source electromagnetic radiation near field, the hollow shell including a first end and a second end relative to the first end;

[0044] An entrance optical component 1 is disposed at the first end to introduce electromagnetic radiation signals from multiple sources of electromagnetic radiation.

[0045] The guiding optical component 2 is rotatably disposed within the hollow shell to amplify the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal;

[0046] An optical path magnification factor adjustment knob 6 is located on the outside of the hollow shell and connected to the guide optical component 2 to adjust the optical path magnification factor in order to decouple multiple electromagnetic radiation sources.

[0047] The exit optical component 3 is located inside the hollow housing and on the side of the guide optical component 2 away from the inlet optical component 1. The electromagnetic radiation signal amplified by the optical path difference of the guide optical component 2 forms a focal point 7 on the exit optical component 3.

[0048] Antenna array 4, located on the side of exit optical component 3 away from entrance optical component 1, is used to detect electromagnetic radiation signals at the location of focal point 7.

[0049] Outgoing terminal 5 is located at the second terminal;

[0050] The subsequent processing circuit is connected to the antenna array 4 via the output terminal 5. The subsequent processing circuit obtains electromagnetic radiation characteristics based on the electromagnetic radiation signal and maps the radiation source based on the electromagnetic radiation characteristics.

[0051] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the multi-source electromagnetic radiation comes from multiple power semiconductor devices, power electronic devices, multi-power devices, and / or multi-power converters.

[0052] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the guiding optical component 2 includes a plurality of optical elements distributed symmetrically.

[0053] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the optical elements are vertically and rotatably arrayed within the housing.

[0054] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the optical path amplification coefficient adjustment knob 6 rotates to adjust and guide the optical component 2 based on the number of focal points 7 and the intensity of the electromagnetic radiation signal detected by the antenna array 4.

[0055] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the guiding optical component 2 is movably and rotatably disposed within the hollow housing.

[0056] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the multi-source electromagnetic radiation comes from a three-phase bridge circuit and an MMC circuit.

[0057] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the size of the entrance optical component 1 is larger than that of the guide optical component 2.

[0058] In a preferred embodiment of the focused multi-source decoupled electromagnetic radiation integrated sensing system, the outer wall of the hollow shell is provided with an adhesive portion for detachable connection.

[0059] In one embodiment, optical components along the horizontal propagation path of the electromagnetic radiation signal cause it to refract to varying degrees, while a dielectric film coating the inner wall of the device causes the electromagnetic radiation signal to undergo total internal reflection.

[0060] In one embodiment, the focused multi-source decoupled electromagnetic radiation integrated sensing system is suitable for scenarios such as multi-power devices in power electronic devices or multi-power converters in systems, where both multi-power devices and multi-power converters are considered as multiple mutually coupled electromagnetic radiation sources. The coupling strength of multiple electromagnetic radiation sources depends on the spatial compactness between them. For example, different power devices in the same converter are generally spatially close, making it difficult to distinguish the correspondence between devices and radiation signals if their electromagnetic radiation signals are directly measured. Based on the guidance and focusing of optical components, the signal differences between different electromagnetic radiation sources are amplified through optical path 8, focusing them at different focal points, thus achieving decoupling of electromagnetic radiation signals from different power devices in the converter. For different converters in the same system, focused decoupling is relatively simpler because the spatial distance between converters is larger, but the signal processing process is the same as described above. Another key point after focused decoupling is determining the mapping relationship between focal point 7 and the actual electromagnetic radiation source; that is, the actual electromagnetic radiation source needs to correspond one-to-one with focal point 7. The mapping relationship depends on the electromagnetic radiation direction, the guidance path of the optical components, and the coupling strength between the radiation sources. The system structure and working principle of a focused multi-source decoupled electromagnetic radiation integrated sensor device are as follows: Figure 1 As shown.

[0061] Electromagnetic radiation regions are divided into three categories based on distance: reactive near-field, radiative near-field (Fresnel region), and radiative far-field (Fraunhofer region). Generally, the characteristics of electromagnetic radiation signals are more pronounced in the radiative near-field. Therefore, electromagnetic radiation sensors need to be placed in the radiative near-field region (Fresnel region). Furthermore, the direction of electromagnetic radiation varies, requiring consideration of the radiation source's characteristics and ease of use to select the optimal detection location. A suitable candidate area can be determined first based on the actual physical space. Then, the intensity of the electromagnetic radiation signal and noise intensity can be compared at representative locations (such as the side of a cylindrical area) to finally determine the optimal near-field positioning.

[0062] In one embodiment, a focused multi-source decoupled electromagnetic radiation integrated sensing system includes an entrance optical component 1, a guide optical component 2, and an exit optical component 3. The entrance optical component 1 receives all electromagnetic radiation signals into the optical path, therefore its size is relatively large. The guide optical component 2 mainly amplifies the optical path differences of electromagnetic radiation signals from different sources based on the wave refraction theorem; a symmetrical arrangement can be considered, resulting in a simpler and more regular optical path. The exit optical component 3 is relatively simple in its arrangement because decoupling mainly relies on the guide component; that is, the multiple electromagnetic radiation sources reaching the exit component have already been decoupled. The exit optical component is mainly used to focus them to a suitable focal position, which is then detected by the antenna at the corresponding focal position. The different radiation sources of interest generally have similar frequency bands, so the antenna type at any focal position can be the same.

[0063] In one embodiment, a focused multi-source decoupled electromagnetic radiation integrated sensing system, such as Figure 2 As shown. Figure 2 The simplified optical path of electromagnetic radiation from dual coupled sources (S1 and S2) in a half-bridge circuit is given in Figure 8.

[0064] In one embodiment, the key to decoupling multiple coupled radiation sources is setting an appropriate differential amplification factor for the optical path 8; this factor being too large or too small is undesirable. This device includes a micro-adjustment knob 6 for the differential amplification factor of the optical path 8, which can be adjusted according to the focusing effect. The focusing effect includes the number of focal points 7 and the strength of the antenna detection signal. The micro-adjustment essentially changes the spatial position of the corresponding optical component.

[0065] In one embodiment, after decoupling the multiple coupled radiation sources, the antenna array 4 at the corresponding focal position detects the corresponding electromagnetic radiation signal. The ultimate goal is to analyze the electromagnetic radiation characteristics of power semiconductor devices or power converters, so it is also necessary to map the focal point 7 to each radiation source. This process is essentially a reverse tracing of the optical guidance path. For typical circuit or system structures, such as three-phase bridge circuits or MMC circuits, the mapping is clear; that is, the focal position corresponding to different radiation sources can be determined simply by using the coordinate system's up, down, left, right, front, and back orientations. For atypical structures, the results can still be quickly obtained based on the corresponding optical logic.

[0066] In one embodiment, the decoupling effect of different electromagnetic radiation sources depends on the differences in their optical paths 8. Therefore, during sensor integration and use, it is necessary to ensure the vibration robustness of the optical path 8, i.e., to require it to be insensitive to vibration. Generally, there are two approaches. One is to strictly ensure the robustness of the optical components, but this is not easy in practice. Even if it can be guaranteed at the initial design stage, a certain degree of displacement is inevitable with increased usage time. The second approach is to retain sufficient decoupling margin, meaning that minor vibrations will not significantly affect the decoupling effect of multiple coupled radiation sources. Figure 2 As shown in the magnified focal area 7, the two smaller solid circles represent the actual focal position, while the two larger dashed circles represent the critical point of decoupling failure. This indicates that the initial decoupling effect is very good, and there is a large margin between "very good" and "obvious failure," ensuring that the sensor can function normally within the set timescale. Of course, the optical path magnification adjustment knob 6 also helps to eliminate the effects of long-term vibration.

[0067] In addition, the antennas are arranged in an array at the exit section of optical path 8. Considering a three-phase bridge circuit, theoretically, an array of more than six antennas would be sufficient to meet the detection requirements.

[0068] The electromagnetic radiation source identification method of the focused multi-source decoupled electromagnetic radiation integrated sensing system includes,

[0069] Step S1. The hollow shell is installed in the near field of the electromagnetic radiation of the multi-source electromagnetic radiation to be measured, and the electromagnetic radiation signal of the multi-source electromagnetic radiation is introduced into the entrance optical component 1.

[0070] Step S2. The guiding optical component 2 amplifies the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal. The electromagnetic radiation signal amplified by the optical path differences of the guiding optical component 2 forms a focal point 7 on the exit optical component 3. The optical path amplification coefficient adjustment knob 6 is rotated to adjust the guiding optical component 2 based on the number of focal points 7 and the intensity of the electromagnetic radiation signal detected by the antenna array 4 to decouple multiple electromagnetic radiation sources.

[0071] Step S3. The antenna array 4 detects the electromagnetic radiation signal at the location of the focal point 7. The subsequent processing circuit obtains the electromagnetic radiation characteristics based on the electromagnetic radiation signal and identifies the radiation source based on the electromagnetic radiation characteristics.

[0072] In one embodiment, the method includes,

[0073] 1. Selection of Near-Field Electromagnetic Radiation Detection Location. Electromagnetic radiation regions are divided into reactive near-field, radiative near-field (Fresnel region), and radiative far-field (Fraunhofer region) according to distance from near to far. Generally, the characteristics of electromagnetic radiation signals are more pronounced in the radiative near-field. Furthermore, the direction of electromagnetic radiation also varies; the optimal detection location needs to be selected by considering the characteristics of the radiation source and the convenience of practical use.

[0074] 2. Optical Component Path Guidance and Focusing. At a given electromagnetic radiation detection location, the electromagnetic radiation is guided and focused through a pre-designed optical component path. The propagation of electromagnetic radiation follows the wave refraction theorem and ultimately focuses at the corresponding focal point. Due to the differences in optical paths, electromagnetic radiation signals from different sources will focus at different focal points on the same optical component. Multiple coupled radiation sources can be decoupled based on the focal point. A corresponding antenna is placed at each focal point to detect the corresponding electromagnetic radiation signal. It can be seen that the focal point is virtual, and the degree of focusing is determined according to the actual application, as long as effective detection of the electromagnetic radiation signal is achieved.

[0075] 3. Mapping relationship between focal point and actual radiation source. After guidance and focusing by optical components, the coupled multiple radiation sources are decoupled, but it is still necessary to know the mapping relationship between the focal point and the actual radiation source. For a given optical component setup, different multifocal positions may be obtained in actual applications. The solution is to provide analysis results in advance for typical application scenarios, such as three-phase bridge circuits and MMC circuits. For atypical application scenarios, users need to derive the mapping themselves based on mathematical logic.

[0076] 4. Adjustment of the differential amplification factor for optical path 8. The key to decoupling multiple coupled radiation sources is the differential amplification factor for optical path 8; a factor that is too large or too small is unsuitable. For multiple devices in a converter, the factor needs to be more sensitive to facilitate the decoupling of tightly coupled radiation sources; for multiple converters in the system, the factor does not need to be too sensitive, as the analysis is performed using the converter as the basic unit. This device includes an optical path 8 differential amplification factor adjustment knob 6 based on actual needs.

[0077] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A focused multi-source decoupled electromagnetic radiation integrated sensing system, characterized in that, It includes: A hollow shell, which is detachably installed in the near field of multi-source electromagnetic radiation, the hollow shell including a first end and a second end relative to the first end; An entrance optical component, located at the first end, is used to introduce electromagnetic radiation signals from multiple sources of electromagnetic radiation. A guiding optical component is rotatably disposed within the hollow housing to amplify the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal; An optical path magnification factor adjustment knob is located on the outside of the hollow shell and connected to the guiding optical component to adjust the optical path magnification factor in order to decouple multiple electromagnetic radiation sources. An exit optical component is located inside the hollow housing and on the side of the guide optical component away from the inlet optical component. The electromagnetic radiation signal amplified by the optical path difference of the guide optical component forms a focal point on the exit optical component. An antenna array is located on the side of the exit optics that is away from the entrance optics to detect electromagnetic radiation signals at the location of the focal point; The outgoing terminal is located at the second terminal; The subsequent processing circuit is connected to the antenna array via the output terminal. The subsequent processing circuit obtains electromagnetic radiation characteristics based on the electromagnetic radiation signal and maps the radiation source based on the electromagnetic radiation characteristics.

2. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, Multi-source electromagnetic radiation originates from multiple power semiconductor devices, power electronic devices, multi-power devices, and / or multi-power converters.

3. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The guiding optical assembly includes a plurality of optical elements distributed symmetrically.

4. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 3, characterized in that, The optical elements are arranged vertically and rotatably within the hollow housing.

5. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The optical path magnification adjustment knob adjusts the guiding optical components based on the number of focal points and the intensity of the electromagnetic radiation signal detected by the antenna array.

6. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The guiding optical component is movably and rotatably disposed within the hollow housing.

7. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The multi-source electromagnetic radiation comes from the three-phase bridge circuit and the MMC circuit.

8. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The size of the entrance optics is larger than that of the guide optics.

9. The focused multi-source decoupled electromagnetic radiation integrated sensing system according to claim 1, characterized in that, The hollow shell has an adhesive part on its outer wall for detachable connection.

10. A method for identifying electromagnetic radiation sources in a focused multi-source decoupled electromagnetic radiation integrated sensing system according to any one of claims 1-9, characterized in that, It includes, Step S1: The hollow shell is installed in the near field of the multi-source electromagnetic radiation to be measured, and the entrance optical component introduces the electromagnetic radiation signal of the multi-source electromagnetic radiation. Step S2: The guiding optical component amplifies the optical path differences of different radiation sources based on the refraction of the electromagnetic radiation signal. The electromagnetic radiation signal amplified by the optical path differences of the guiding optical component forms a focal point on the exit optical component. The optical path amplification coefficient adjustment knob is rotated to adjust the guiding optical component to decouple multiple electromagnetic radiation sources based on the number of focal points and the intensity of the electromagnetic radiation signal detected by the antenna array. Step S3: The antenna array detects the electromagnetic radiation signal at the location of the focal point. The subsequent processing circuit obtains the electromagnetic radiation characteristics based on the electromagnetic radiation signal and identifies the radiation source based on the electromagnetic radiation characteristics.

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