KR20200121551A - Thermo-graphic diagnosis system for distributing board with composite aperture screen - Google Patents

Abstract

The present invention relates to a distributing board thermo-graphic diagnosis system for diagnose failure of a distributing board from a thermal image obtained by imaging constituent elements in the distributing board. The distributing board thermo-graphic diagnosis system comprises: a composite aperture screen formed therein with a plurality of apertures corresponding to a plurality of monitoring target constituent elements in the distributing board; a lens disposed rearward of the composite aperture screen to condense and refract infrared ray radiated from the monitoring target constituent elements; a thermopile array configured by a plurality of thermopile pixels, each of the thermopile pixels sensing and converting the infrared ray condensed from the lens, a plurality of thermopile pixels corresponding to the aperture forming one sensing region, and respective sensing regions being divided; and a digital signal processor for digital-processing an electric signal outputted from each sensing region of the thermopile array to determine whether the monitoring target constituent elements are deteriorated. Since the present invention can individually diagnose deterioration in each constituent element in the distributing board using a single low resolution thermal image camera, installation costs of a diagnosis system can be reduced and maintenance of the diagnosis system may be simplified. Since the composite aperture screen blocks infrared ray radiated from another constituent element and monitoring target constituent elements and sensing regions of the thermopile array may be matched with each other in one-to-one correspondence, the influence due to heat of another constituent element may be minimized and excessive or short detection of deterioration is prevented.

Description

Switchboard thermal image diagnosis system equipped with a composite aperture screen {THERMO-GRAPHIC DIAGNOSIS SYSTEM FOR DISTRIBUTING BOARD WITH COMPOSITE APERTURE SCREEN}

The present invention relates to a switchboard thermal imaging diagnostic system having a composite aperture screen that enables temperature monitoring of multiple points of a switchboard to be performed with a single thermal imaging camera using a composite aperture screen.

In general, a switchboard is a device that distributes and provides power supplied from a power supplier to power customers. The switchboard may include a substation means for converting extra-high voltage power into high voltage or high voltage power into low voltage, and a main circuit breaker and branch circuit breaker tripped by overcurrent or overvoltage, and a surge protection device that protects the device from surges. Etc. Typically, each component in a switchboard is connected by a bus bar.

A method of using a temperature sensor has been proposed as a method of diagnosing deterioration or aging of components in a conventional switchboard. However, since the components constituting the switchboard have different reference temperatures for deterioration, it is necessary to manage the installation cost of installing a temperature sensor in each area to be monitored, and whether a plurality of temperature sensors operate normally, and a temperature sensor that is burnt out by deterioration. There is a hassle of maintenance, such as having to replace the product.

As another method, a deterioration monitoring system using a thermal imaging camera has been proposed. Since the thermal imaging camera is installed apart from the components, there is an advantage that it is hardly affected by the deterioration of the components. In addition, since deterioration is detected from an electrical signal output from a pixel of the thermopile array, there is an advantage in that signal processing is easy.

1 is a block diagram illustrating a general switchboard thermal image diagnosis system. Referring to FIG. 1, the input terminal of the switchboard 100 is connected to the grid side of the power supplier, and the output terminal is connected to the power acceptor side. The thermal imaging camera 110 photographs components in the switchboard 100. The thermal imaging camera 110 includes a thermopile array and detects infrared rays emitted from components in the switchboard 100 and converts them into electrical signals. The diagnostic computer 120 diagnoses deterioration or aging of each component from the signal detected by the thermal imaging camera 110. For example, when the output signal of the thermal imaging camera 110 is compared with a pre-stored allowable value and exceeds the allowable value, deterioration of the component is determined.

The diagnostic computer 120 may warn a field manager of a deterioration state by turning on a warning light or a warning LED installed on a panel of the front panel of the switchboard. In addition, data indicating the deterioration state of the component may be transmitted to the remote diagnosis server 140 or the manager terminal 150 through the wired/wireless network 130. For example, data indicating which components in the switchboard 100 are in which deterioration state is transmitted to the diagnosis server 140 or the manager terminal 150. When a serious failure is expected, a site manager or a remote manager may trip the circuit breaker in the switchboard 100 to prevent an electric fire or other electrical safety accidents.

However, the conventional thermal imaging diagnostic system has a limitation in detecting an accurate deterioration state for each component due to different reference temperatures for deterioration of components in a switchboard. For example, a transformer or a busbar has a higher allowable temperature, but a cable or other insulator has a relatively low allowable temperature. For this reason, it is difficult to set the deterioration reference point, and it may cause excessive detection or insufficient detection of the deterioration state.

As a method of individually diagnosing deterioration of each component in a conventional switchboard, there is a method of installing a plurality of thermal imaging cameras corresponding to each component, or using a thermopile array having very high resolution.

However, in both methods of installing a plurality of thermal imaging cameras or using a thermopile array having a very high resolution, the cost of constructing a diagnostic system is very high, and it is difficult to install and causes a problem that the failure rate increases. Furthermore, excessive detection or insufficient detection of the component to be diagnosed is still generated by heat generated from adjacent components.

Republic of Korea Patent Publication No. 10-2017-0047979 Korean Patent Registration No. 10-1570640 Korean Patent Registration No. 10-1964898

In the present invention, despite the use of a single low-resolution thermopile array, each component in the switchboard can be individually diagnosed for deterioration, so it is economical, and maintenance is simplified, and excessive or insufficient detection by minimizing the effect of heat of other components. An object of the present invention is to provide a switchboard thermal image diagnosis system having a composite aperture screen capable of preventing a phenomenon and improving detection accuracy.

In the switchboard thermal image diagnosis system having a composite aperture screen according to an embodiment of the present invention, in the switchboard thermal image diagnosis system for diagnosing an abnormal state of the switchboard from a thermal image obtained by imaging components in the switchboard, A composite aperture screen in which a plurality of openings corresponding to each of a plurality of components to be monitored are formed; A lens disposed behind the composite aperture screen and refracting by receiving infrared rays emitted from the component to be monitored through the opening; Consist of a plurality of thermopile pixels, each thermopile pixel detects infrared rays collected by the lens and converts them into electrical signals, and a plurality of thermopile pixels corresponding to the openings form one sensing area, each The sensing regions of the thermopile array are partitioned from each other; And a digital signal processor that digitally processes an electrical signal output from each sensing region of the thermopile array to determine whether each component to be monitored is deteriorated.

In the switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, the composite aperture screen is formed of an infrared ray blocking member.

In the switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, an infrared shielding film is coated or an infrared shielding paint is applied to a surface of the composite aperture screen facing the switchboard.

In the switchboard thermal imaging system having a composite aperture screen according to another embodiment of the present invention, at least two or more of the apertures have different apertures.

In a switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, at least two or more of the openings have an inner circumference having different angles with respect to the central axis of the lens.

In the switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, the digital signal processor comprises the aperture of the opening and an angle formed by the inner circumference of the aperture with respect to the central axis of the lens. And a signal correction unit correcting an output signal of the thermopile pixel in the sensing area.

In a switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, the signal correction unit corrects the output signal of the thermopile pixel using Equation (2) below.

Equation (2)

는 상기 복합 개구경 스크린 상의 2차원 좌표 (x,y) 위치의 개구부를 통과한 적외선 에너지이며,

는 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀에서 출력되는 신호이며,

는 상기 (x,y) 좌표의 개구부의 구경과, 그 내주연이 상기 렌즈의 중심축에 대하여 이루는 각도와, 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀에 의해 부가되는 옵셋 성분이며,

는 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀의 특성에 의한 게인이다.here,

Is the infrared energy passing through the opening at the two-dimensional coordinate (x,y) position on the composite aperture screen,

Is a signal output from the thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate,

Is added by the aperture of the aperture of the (x,y) coordinate, the angle formed by the inner periphery of the aperture with respect to the central axis of the lens, and the thermopile pixel in the sensing region corresponding to the aperture of the (x,y) coordinate Is an offset component that becomes

Is a gain by the characteristic of a thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate.

를 상기 감시대상 구성품 각각의 허용 적외선 에너지와 매핑하는 룩업테이블을 더 포함하며, 상기 룩업테이블의 매핑 결과에 따라 상기 감시대상 구성품에 대한 열화 여부를 판단한다.A switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, wherein the digital signal processor is corrected by the signal correction unit for each of the components to be monitored.

And a lookup table for mapping to allowable infrared energy of each of the components to be monitored, and it is determined whether the component to be monitored is deteriorated according to the mapping result of the lookup table.

In the switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention, the component to be monitored is any one of a transformer, a switchgear, a bus bar, a circuit breaker, a surge protector, and a cable.

A switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention further includes a communication module for transmitting a determination result of deterioration to the digital signal processor to a remote server or a manager terminal.

A switchboard thermal image diagnosis system having a composite aperture screen according to another embodiment of the present invention further includes a tilt sensor installed in a horizontal direction with respect to the ground, and the digital signal processor is a device detected by the tilt sensor. The slope value of is compared with a predetermined threshold value to determine whether there is an earthquake or ground erosion.

According to the switchboard thermal image diagnosis system with a composite aperture screen of the present invention, each component in the switchboard can be individually diagnosed with deterioration using a single low-resolution thermal imaging camera, thereby reducing the cost of installing the diagnosis system and reducing the diagnosis system. It can simplify maintenance and repair of other components, and can minimize the effect of heat from other components by blocking the infrared rays emitted from other components by the composite aperture screen and matching the sensing area of the components to be monitored and the thermopile array on a one-to-one basis. And there is an effect of preventing excessive detection or insufficient detection of deterioration.

1 is a block diagram illustrating a general switchboard thermal image diagnosis system;
2 is a diagram conceptually depicting a switchboard thermal image diagnosis system having a composite aperture screen according to the present invention, and
3 is a block diagram illustrating a switchboard thermal image diagnosis system having a composite aperture screen according to the present invention.

Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood as including all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Throughout the specification, portions having similar configurations and operations are denoted by the same reference numerals. In addition, the drawings attached to the present invention are for convenience of explanation, and the shape and relative scale may be exaggerated or omitted.

In describing the embodiments in detail, overlapping descriptions or descriptions of technologies that are obvious in the art have been omitted. In addition, in the following description, when a certain part "includes" other components, it means that components may be further included in addition to the described components unless otherwise stated.

In addition, terms such as "~ unit", "~ group", and "~ module" described in the specification mean a unit that processes at least one function or operation, which can be implemented by hardware or software or a combination of hardware and software. I can. In addition, when a part is electrically connected to another part, this includes not only a case in which it is directly connected but also a case in which it is connected with a different configuration in the middle.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component.

The present invention relates to a system for diagnosing deterioration by imaging a plurality of components in a switchboard using a single thermal imaging camera. A composite aperture screen is installed in front of the lens of the thermal imaging camera, that is, between the components to be monitored in the switchboard and the lens. A plurality of openings corresponding to the components to be monitored are formed in the composite aperture screen. The openings may be arranged in a matrix form having a predetermined resolution, but may be arranged randomly without rules depending on the location of the component to be monitored. The components to be monitored and the sensing area of the thermopile array in the thermal imaging camera may be matched one-to-one by the openings of the composite aperture screen. Therefore, in each sensing area of the thermopile array, infrared rays emitted from corresponding components to be monitored are received, but infrared rays emitted from other components are mostly blocked by the composite aperture screen.

2 is a diagram conceptually illustrating a switchboard thermal image diagnosis system having a composite aperture screen according to the present invention.

Referring to FIG. 2, a transformer 210, a switch 220, and a bus bar 230 are illustrated as components to be monitored in the switchboard. Components to be monitored are not limited by this example. For example, the transformer 210 may not be installed in some switchboards. In addition, components to be monitored may further include a circuit breaker, a surge protector, and a cable. When multiple breakers are installed (for example, a main breaker and a plurality of branch breakers are installed, etc.), each breaker may be monitored for thermal images by different openings and detection areas of the thermopile array. It goes without saying that the components to be monitored are not limited to the components listed above.

Referring to FIG. 2, the thermal imaging camera 200 according to the present invention has a structure in which a composite aperture screen 240 is installed in front of the lens 250, unlike a conventional thermal imaging camera. A plurality of openings 241, 242, 243 are formed in the composite aperture screen 240. Each of the openings 241, 242, 243 corresponds to each of the components to be monitored.

In this example, the first opening 241 is formed to pass infrared rays emitted from the transformer 210 in the switchboard to a specific sensing region of the thermopile array 260. The second opening 242 is at a position corresponding to the switch 220 and the third opening 243 is at a position corresponding to the busbar 230 (ie, infrared rays emitted from each component are transmitted to the corresponding sensing area of the thermopile array 260 ). It is formed in the position to pass through.

To be more precise, the lens 250 disposed between the composite aperture screen 240 and the thermopile array 260 receives infrared rays passing through each of the openings 241, 242, and 243 to perform a thermostat. By refracting to the corresponding sensing region of the file array 260, the monitoring target component-the opening-the sensing region of the thermopile array are matched.

Here, an important technical advantage is that infrared rays radiated from other components other than the corresponding components to be monitored are blocked by the composite aperture screen when viewed based on each sensing region of the thermopile array 260. In order to increase the infrared ray blocking effect, the composite aperture screen 240 may be formed of an infrared ray blocking member. Alternatively, an infrared blocking film may be coated or an infrared blocking paint may be applied to the surface of the composite aperture screen 240 facing the switchboard. For example, a heat mirror film that reflects infrared rays may be attached, or a paint including ATO, ITO, ZrO, etc., which has excellent chuck ultraviolet ray blocking performance, may be applied.

The thermopile array 260 is composed of a plurality of thermopile pixels, and each thermopile pixel senses infrared rays collected by the lens 250 and converts them into electrical signals. A plurality of thermopile pixels corresponding to the openings 241, 242, 243 form one sensing region, and each sensing region is partitioned from each other to avoid thermal interference with neighboring sensing regions.

3 is a block diagram illustrating a switchboard thermal image diagnosis system having a composite aperture screen according to the present invention.

Referring to FIG. 3, five sensing areas 261-265 may be formed in the thermopile array 260. Depending on the size of the component to be monitored or the importance of the component, the sensing areas 261-265 may include different numbers of thermopile pixels. For example, with respect to the busbar 264 as a length member, a region including a plurality of thermopile pixels along one row, such as the fourth sensing region 264, may be formed as a sensing region. For an important component such as the transformer 210 or a circuit breaker that takes a lot of heat load, a larger number of thermopile pixels may be arranged in a matrix form compared to other sensing regions such as the second sensing region 262.

In the present invention, at least two or more of the openings 241-243 formed in the composite aperture screen 240 may have different apertures. In addition, at least two or more of the openings 241-243 may be formed so that their inner circumferences have different angles with respect to the central axis of the lens 250. By making the aperture of the opening and the angle of the inner periphery different, it is possible to increase the characteristics of the infrared rays emitted from the components to be monitored toward the corresponding sensing areas (261-265), and to identify the processing data for each component to be monitored. Can increase.

The digital signal processor 300 is a means for digitally processing the electrical signals output from the sensing areas 261-265 of the thermopile array 260 to determine whether each component to be monitored is deteriorated.

The digital signal processor 300 may be embedded in the thermal imaging camera 200, and in the digital signal processor 300, software such as a signal processing algorithm for determining deterioration and an algorithm for signal correction, and measured values and allowable values Memory to store the etc. can be embedded.

In addition, although not illustrated and illustrated, a timing circuit for sequentially applying a driving current to each thermopile pixel constituting the thermopile array 260, and signals output from the columns and rows of the thermopile array 260 are selected. A circuit configuration of a multiplexer to output, an amplifier to amplify the output of each pixel, etc. may use a commonly known circuit.

Referring to FIG. 3, the digital signal processor 300 includes a signal processing unit 310, a signal correction unit 320, and a lookup table 330.

The signal processing unit 310 digitally processes signals output from the thermopile pixels in each sensing area 261-265 to determine deterioration of the component to be monitored. On the other hand, due to the influence of the sensor characteristics of the thermopile pixel and the physical characteristics of the openings 241-243 of the composite aperture screen 240, a deviation between the actually input infrared energy and the sensed infrared energy may occur. , It is necessary to correct the detection signal. The signal correction unit 320 is used to correct the detection signal.

The signal correction unit 320 corrects the output signal of the thermopile pixel according to the aperture of the openings 241-243 and the angle formed by the inner circumference of the opening 241-243 with respect to the central axis of the lens 250 and sensor characteristics.

An equation such as Equation (1) below may be established between infrared energy incident on each thermopile pixel and a signal output from each thermopile pixel.

Equation (1)

는 상기 복합 개구경 스크린 상의 2차원 좌표 (x,y) 위치의 개구부를 통과한 적외선 에너지이며,

는 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀에서 출력되는 신호이며,

는 상기 (x,y) 좌표의 개구부의 구경과, 그 내주연이 상기 렌즈의 중심축에 대하여 이루는 각도와, 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀에 의해 부가되는 옵셋 성분이며,

는 상기 (x,y) 좌표의 개구부에 대응하는 감지영역 내 서모파일 픽셀의 특성에 의한 게인이다.here,

Is the infrared energy passing through the opening at the two-dimensional coordinate (x,y) position on the composite aperture screen,

Is a signal output from the thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate,

Is added by the aperture of the aperture of the (x,y) coordinate, the angle formed by the inner periphery of the aperture with respect to the central axis of the lens, and the thermopile pixel in the sensing region corresponding to the aperture of the (x,y) coordinate Is an offset component that becomes

Is a gain by the characteristic of a thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate.

Equation (2) below can be derived from Equation (1).

Equation (2)

Gain and offset can be determined by 2 point correction, and since the output signal of the thermopile pixel is known, the input infrared energy reflecting the aperture of the opening 241-243 and the angle to the lens 250, that is, the corrected infrared energy Can be saved.

를 감시대상 구성품 각각의 허용 적외선 에너지와 매핑한 테이블이다. 신호 처리부(310)는 룩업테이블(330)을 참조하여 보정 처리된 데이터로부터 감시대상 구성품의 열화 여부를 신속하게 판단할 수 있다.The lookup table (LUT, 330) is corrected by the signal correction unit 320 for each component to be monitored.

Is a table that maps the allowable infrared energy of each component to be monitored. The signal processing unit 310 may quickly determine whether a component to be monitored is deteriorated from the corrected data by referring to the lookup table 330.

The result determined by the digital signal processor 300 may be displayed through a graphical user interface (GUI) through a monitoring device 360 directly connected by wire. Therefore, the site manager can see the monitoring device 360 and check whether it is deteriorated and take immediate follow-up measures. Although not shown, it is also possible to notify the site manager in the form of lighting a warning lamp, sounding a buzzer, or lighting a warning LED installed on a status display panel of a switchboard.

If the switchboard is managed unattended, the result of determining whether to deteriorate may be transmitted to a remotely located server or a manager terminal using the communication module 350. For example, the communication module 350 may be composed of any one of a wired Internet module, a broadband mobile communication module, and a short-range wireless communication module, or may have a form in which these modules are complexly configured. The broadband mobile communication module is connected to a base station, a repeater, a server, and the like to transmit and receive wireless signals through a mobile communication network. The wireless signal may include various types of data such as a voice call signal, a video call signal, a text message, a multimedia message, and data including terminal information and crosswalk information according to the present invention. The broadband mobile communication module may be composed of a Code Division Multiple Access (CDMA) module, a Long Term Evolution (LTE) module, or a combination of such modules. The short-range wireless communication module may be composed of Wi-Fi (Wireless-Fidelity), Bluetooth, RFID (Radio Frequency IDentification), IrDA (Infrared Data Association), UWB (Ultra Wideband), Zigbee module, and the like.

The switchboard thermal image diagnosis system having a composite aperture screen of the present invention may further include a tilt sensor 340 installed in a horizontal direction with respect to the ground. The digital signal processor 300 may compare an inclination value of the device detected by the inclination sensor 340 with a predetermined threshold value to determine whether there is an earthquake or ground erosion. As described above, the determination result may be immediately transmitted to the monitoring device 360, the remote server, and the manager terminal.

The invention disclosed above can be variously modified within a range that does not damage the basic idea. That is, all of the above embodiments should be interpreted as illustratively and not limitedly. Therefore, the scope of protection of the present invention should be determined according to the appended claims rather than the above-described embodiments, and if the components defined in the appended claims are substituted with equivalents, it should be considered as belonging to the protection scope of the present invention.

200: thermal imaging camera 210: transformer
220: switch 230: bus bar
240: composite aperture screen 241: first opening
242: second opening 243: third opening
250: lens 260: thermopile array
261: first sensing region 262: second sensing region
263: third sensing region 264: fourth sensing region
265: fifth detection area 300: digital signal processor
310: signal processing unit 320: signal correction unit
330: lookup table 340: tilt sensor
350: communication module 360: monitoring device

Claims (11)

In the switchboard thermal image diagnosis system for diagnosing an abnormal state of a switchboard from a thermal image obtained by imaging components in a switchboard,
A composite aperture screen in which a plurality of openings corresponding to each of a plurality of components to be monitored in the switchboard are formed;
A lens disposed behind the composite aperture screen and refracting by receiving infrared rays emitted from the component to be monitored through the opening;
Consist of a plurality of thermopile pixels, each thermopile pixel detects infrared rays collected by the lens and converts them into electrical signals, and a plurality of thermopile pixels corresponding to the openings form one sensing area, each The sensing regions of the thermopile array are partitioned from each other;
Digital signal processor that digitally processes electrical signals output from each sensing area of the thermopile array to determine whether each of the components to be monitored is deteriorated
Switchboard thermal image diagnosis system having a composite aperture screen comprising a.
The method of claim 1,
The composite aperture screen is a switchboard thermal image diagnosis system having a composite aperture screen formed of an infrared blocking member.
The method of claim 1,
A switchboard thermal image diagnosis system comprising a composite aperture screen on which an infrared blocking film is coated or an infrared blocking paint is applied on a surface of the composite aperture screen facing the switchboard.
The method of claim 1,
At least two of the openings, a switchboard thermal image diagnosis system having a composite aperture screen having different apertures.
The method of claim 4,
At least two of the openings have a composite aperture screen having an inner periphery having different angles with respect to the central axis of the lens.
The method of claim 5,
The digital signal processor includes a composite aperture screen including a signal correcting unit for correcting the output signal of the thermopile pixel in the sensing area according to an angle formed by the aperture of the opening and the inner circumference of the lens with respect to the central axis of the lens. Equipped switchboard thermal imaging diagnostic system.
The method of claim 6,
The signal correction unit is a switchboard thermal image diagnosis system including a composite aperture screen for correcting the output signal of the thermopile pixel using the following equation (2).
Equation (2)

here,

Is the infrared energy passing through the opening at the two-dimensional coordinate (x,y) position on the composite aperture screen,

Is a signal output from the thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate,

Is added by the aperture of the aperture of the (x,y) coordinate, the angle formed by the inner periphery of the aperture with respect to the central axis of the lens, and the thermopile pixel in the sensing region corresponding to the aperture of the (x,y) coordinate Is an offset component that becomes

Is a gain by the characteristic of a thermopile pixel in the sensing area corresponding to the opening of the (x,y) coordinate.
The method of claim 7,
The digital signal processor corrected by the signal correction unit for each of the components to be monitored

Thermal image diagnosis of a switchboard including a lookup table that maps the allowable infrared energy of each of the components to be monitored, and a composite aperture screen that determines whether the components to be monitored are deteriorated according to the mapping result of the lookup table. system.
The method according to any one of claims 1 to 8,
The component to be monitored is a switchboard thermal image diagnosis system having a composite aperture screen which is any one of a transformer, a switch, a bus bar, a circuit breaker, a surge protector, and a cable.
The method according to any one of claims 1 to 8,
A switchboard thermal image diagnosis system having a composite aperture screen further comprising a communication module that transmits a determination result of deterioration to the digital signal processor to a remote server or an administrator terminal.
The method according to any one of claims 1 to 8,
Further comprising a tilt sensor installed in a horizontal direction with respect to the ground,
The digital signal processor is a switchboard thermal image diagnosis system including a composite aperture screen for determining whether an earthquake or ground erosion by comparing a tilt value of the device detected by the tilt sensor with a predetermined threshold value.

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