WO2022202030A1

WO2022202030A1 - Energization state detection device and energization state detection method

Info

Publication number: WO2022202030A1
Application number: PCT/JP2022/006829
Authority: WO
Inventors: 啓田坂; 真一谷本; 亮松原; 新九郎藤野; 浩国本
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2021-03-22
Filing date: 2022-02-21
Publication date: 2022-09-29
Also published as: JPWO2022202030A1; JP7539004B2

Abstract

An energization state detection device (10, 10A, 10B, 10C) for detecting the energization state of an electric wire is provided with a processor (11) and a memory (12). The processor (11) acquires reception strength information indicating the reception strength of an antenna (20) that corresponds to the energization state of the electric wire, and corrects the reception strength information on the basis of information indicating the orientation of the electric wire and information indicating the orientation of the antenna (20).

Description

Energized state detection device and energized state detection method

The present disclosure relates to an energization state detection device and an energization state detection method.

Patent Document 1 describes a power transmission equipment monitoring device. The power transmission equipment monitoring device has an imaging unit, an electromagnetic wave detection unit, a transmission unit, an instruction information acquisition unit, and a flight control unit. A power transmission equipment monitoring device is mounted on an unmanned air vehicle. The imaging unit images the power transmission equipment. The electromagnetic wave detector detects electromagnetic waves emitted by power transmission equipment. The transmission unit transmits at least one of image information based on the image captured by the imaging unit and electromagnetic wave information based on the electromagnetic wave detected by the electromagnetic wave detection unit to the other device. The instruction information acquisition unit acquires instruction information for instructing the flight of the unmanned air vehicle from the terminal of the operator who operates the unmanned air vehicle. The flight control section controls flight of the unmanned air vehicle based on the instruction information acquired by the instruction information acquisition section.

WO2018/138942

An object of the present disclosure is to provide an energized state detection device and an energized state detection method with high accuracy.

The present disclosure is an energization state detection device for detecting an energization state of a wire, comprising a processor and a memory, wherein the processor acquires reception intensity information indicating a reception intensity of an antenna corresponding to the energization state of the wire. and correcting the reception intensity information based on the information indicating the direction of the electric wire and the information indicating the direction of the antenna.

The present disclosure is an energization state detection method for detecting an energization state of a wire by a device having a processor and a memory, wherein the processor indicates a reception strength of an antenna corresponding to the energization state of the wire. A method for detecting an energized state, comprising: obtaining information; and correcting the reception intensity information based on the information indicating the orientation of the electric wire and the information indicating the orientation of the antenna, by the processor. .

According to the present disclosure, it is possible to provide a highly accurate energization state detection device and energization state detection method.

Conceptual diagram showing an example of wire shaft detection FIG. 2 is a conceptual diagram illustrating an antenna axis and an angle between the wire axis and the antenna axis; Block diagram showing a configuration example of an energization state detection system according to an embodiment of the present disclosure Conceptual diagram illustrating an energization state detection device Conceptual diagram showing an example of arrangement of antennas in the energized state detection device Flowchart exemplifying processing for detecting an energized state of an electric wire Conceptual diagram showing an example of presentation of the energized state of electric wires Conceptual diagram showing an output example of information prompting correction of antenna orientation

(Background leading up to this disclosure)
At substations and the like, workers (hereinafter referred to as users) may perform patrols and maintenance work or construction work. When performing such work, the work is performed in the vicinity of the relevant equipment. It is difficult for users who perform maintenance and inspection of equipment or perform construction work to recognize the charging or operating status of surrounding equipment during work.

Also, regardless of whether the user is working or not, it is preferable to check the presence or absence of high voltage in the electric wire from the viewpoint of safety. Since it is dangerous for a user to directly touch electric wires, non-contact detection is desired.

　One of the methods for realizing non-contact detection is to measure electromagnetic waves, which are emitted from electric wires that are energized. That is, by knowing the direction of the source of the leaked electric field leaking from the transmission line connected to the device, that is, the arrival direction of the leaked electric field, it is possible to confirm whether or not there is electricity.

By the way, the reception strength of the signal received by the antenna changes according to the angle between the direction in which the electric wire extends and the direction in which the antenna for measuring electromagnetic waves extends. Therefore, the detection accuracy of the energized state of the electric wire varies depending on the angle.

Therefore, in each of the embodiments described below, when an antenna for measuring electromagnetic waves is used to detect the energized state of a wire, an energized state detecting apparatus and an energized state detecting device capable of maintaining detection accuracy regardless of the orientation of the antenna are provided. An example of the detection method will be described.

Hereinafter, embodiments specifically disclosing the configuration and operation of the energized state detection device and the energized state detection method according to the present disclosure will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter.

(embodiment)
An energization state detection device and an energization state detection method according to the present disclosure will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing an example of detection of an electric wire axis. The wire axis means an axis that indicates the direction in which the wire extends. The wire axis can be represented by a vector, for example. A wire axis expressed in vector form is referred to as a wire vector. FIG. 1 expresses a captured image captured by the camera 60 as a conceptual diagram.

The electric wire is reflected in the captured image. An energization state detection device 10, which will be described later, performs predetermined processing on the captured image to calculate the direction in which the electric wire extends, that is, the electric wire vector. As will be described later, the electric wire vector may be calculated by a method other than image processing on the captured image.

FIG. 2 is a conceptual diagram illustrating the antenna axis and the angle θ between the wire axis and the antenna axis. Antenna axis means an axis along which the antenna extends. In the example of FIG. 2, the antenna is fixed so that the optical axis of the camera 60 and the antenna axis are orthogonal. However, the present embodiment is not limited to the above aspect, and the antenna may be positioned so that the optical axis of the camera 60 and the antenna axis are parallel, for example. Also, the antenna may be positioned such that the angle between the optical axis of the camera 60 and the antenna axis is a predetermined value. The antenna and camera 60 may be built into the same device or may be separate components. Let θ be the angle between the wire axis and the antenna axis. Note that the electric wire vector is a vector used to obtain the angle θ formed.

FIG. 3 is a block diagram showing a configuration example of the energization state detection system 100 according to the embodiment of the present disclosure. An energized state detection system 100 according to an embodiment of the present disclosure includes an energized state detection device 10, an antenna 20, two

audio boards

30 and 40, an audio interface 50, a camera, and a capture board 70.

Antenna 20 detects electromagnetic waves coming from a energized electric wire. The antenna 20 is formed by winding a coil around a core, for example, and is configured by a ferrite antenna when the core is configured by ferrite. A ferrite antenna is formed by winding an electric wire coil whose surface is coated with insulation around a rod-shaped core made of ferrite or the like with high magnetic permeability. When both ends of the coil are closed, magnetic field lines pass through the inside of the antenna according to changes in the surrounding magnetic field, and electromotive force is generated in the coil by electromagnetic induction, so the magnetic field can be measured (loop antenna operation ). If one end of the coil is open, a voltage will be induced in the coil depending on the surrounding electric field, so that the electric field can be measured (monopole antenna operation). The direction in which the core extends corresponds to the direction of the antenna axis. Antenna 20 may comprise a gyroscope 21 . The gyroscope 21 will be described later.

The

audio boards

30 and 40 are devices that process audio information. Audio board 30 is connected to antenna 20 . Audio board 40 is connected to audio interface 50 . The audio interface 50 is connected to the energization state detection device 10 . That is, by interposing the audio board 30 and the audio board 40 between the antenna 20 and the energized state detection device 10, the antenna 20 and the energized state detection device 10 can be separated. However, the antenna 20 may be built in the energized state detection device 10, in which case the audio board 30, the audio board 40, and the audio interface 50 are not required.

The audio board 30 includes an AD conversion circuit 31. The audio board 30 converts the signal received by the antenna 20 from an analog signal to a digital signal by the AD conversion circuit 31 . The audio board 30 wirelessly transmits the converted digital signal to the audio board 40 . The audio board 40 has a DA conversion circuit 41 . Audio board 40 converts the digital signal received from audio board 30 into an analog signal. The audio board 40 inputs the converted analog signal to the audio input section 51 of the audio interface 50 .

The audio interface 50 includes an audio input section 51 , an AD conversion circuit 52 and an audio buffer 53 . An analog signal input from the audio board 40 to the audio input section 51 is converted into a digital signal by the AD conversion circuit 52 . The converted digital signal is accumulated in the audio buffer 53 . The digital signal accumulated in the audio buffer 53 is input to the energization state detection device 10 as reception strength information indicating the reception strength of the antenna 20 corresponding to the energization state of the electric wire.

The camera 60 captures a captured image in which the electric wire is reflected. The captured image is transmitted to the capture board 70 . The capture board 70 has an AD conversion circuit 71 and a frame buffer 72 . The capture board 70 converts the received captured image from an analog signal to a digital signal by the AD conversion circuit 71 . The capture board 70 accumulates the digital signal of the captured image after conversion in the frame buffer 72 . A digital signal of the captured image stored in the frame buffer 72 is input to the energization state detection device 10 .

The external file 80 is stored in a storage medium outside the energized state detection device 10 . Information indicating the orientation of the optical axis of the camera 60 and information indicating the orientation of the antenna axis of the antenna 20 are recorded in the external file 80 . For example, in the external file 80, an optical axis vector indicating the direction of the optical axis of the camera 60 and an antenna axis vector indicating the direction of the antenna axis are recorded as vector data. The energized state detection device 10 reads the data recorded in this external file 80 and stores it in the memory 12 . The data of the optical axis vector and the antenna axis vector may be stored in the memory 12 in advance. That is, the antenna 20 may be fixed with respect to the camera 60, as shown in FIG. In this case, the antenna axis vector data (an example of information indicating the orientation of the antenna) is information indicating the orientation of the antenna 20 with respect to the optical axis of the camera 60 .

Note that when the antenna 20 includes the gyroscope 21, the energization state detection device 10 may acquire the data of the antenna axis vector from the antenna 20 via the audio board 30, the audio board 40, and the audio interface 50. .

The energization state detection device 10 includes a processor 11, a memory 12, a graphic memory 13, and an output device 14. The memory 12, the graphic memory 13, and the output device 14 are connected to the processor 11 by an internal bus or the like so that data or information can be input/output between them.

The processor 11 is configured using, for example, a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or an FPGA (Field Programmable Gate Array). The processor 11 functions as a control section of the energization state detection device 10, and performs control processing for overall control of the operation of each section of the energization state detection device 10, data or information exchange with each section of the energization state detection device 10. It performs input/output processing, data arithmetic processing, and data or information storage processing. Processor 11 operates according to a program stored in memory 12 .

The memory 12 has, for example, a RAM as a work memory that is used when executing the processing of the processor 11, and a ROM that stores a program that defines the processing of the processor 11. Data generated or acquired by the processor 11 is temporarily stored in the RAM. A program that defines the processing of the processor 11 is written in the ROM. Note that the memory 12 may store program data for causing the energized state detection device 10 to execute various functions and data used by the program. Memory 12 may store data acquired from antenna 20 via audio board 30 , audio board 40 and audio interface 50 . The memory 12 may store data acquired from the camera 60 via the capture board 70 . Memory 12 may store data recorded in external file 80 .

The graphic memory 13 is a memory that temporarily stores display data when displaying information to the user. This information display is performed on a display or the like included in the output device 14 .

The output device 14 is a device that outputs information to the user under the control of the processor 11 . The output device 14 includes, for example, a display, a speaker, a vibrating device for vibrating the energized state detection device 10, and the like. However, output devices other than these may be used. In the present embodiment, a display is mainly exemplified as the output device 14 for explanation. The display, which is the output device 14, displays the display data accumulated in the graphic memory 13. FIG.

FIG. 4 is a conceptual diagram illustrating the energization state detection device 10. FIG. The energization state detection device 10 may or may not incorporate a camera 60 (see FIGS. 3 and 4). FIG. 4 exemplifies the energization state detection device 10 of the type that incorporates the camera 60 . 10 A of electricity supply state detection apparatuses are smart phones. For example, a camera 60 is arranged on the back of the smartphone. A display included in the smartphone corresponds to the output device 14 . In addition, a speaker, a vibration generator, and the like provided in the smartphone also correspond to the output device 14 .

The energization state detection device 10B is smart glasses. For example, the camera 60 is arranged at a position where the optical axis is directed in the line of sight of the user wearing the smart glasses when looking forward. In the case of smart glasses, information is displayed in AR on the left and right lenses. Note that AR display means displaying information so as to be superimposed on the real space. A projection device or the like that projects information onto the lens portion of smart glasses corresponds to the output device 14 . A speaker or the like included in smart glasses also corresponds to the output device 14 .

The energization state detection device 10C is a multifunctional wristwatch. For example, a camera 60 is arranged on the side of a wrist watch. The output device 14 corresponds to a display arranged on the dial of the wristwatch, a built-in speaker for generating an alarm sound, or the like.

FIG. 5 is a conceptual diagram showing an example of arrangement of antennas on the energized state detection device 10A. The energized state detection device 10 may or may not incorporate the antenna 20 (see FIGS. 3 and 5). FIG. 5 illustrates an energization state detection device 10A of a type that incorporates an antenna 20. As shown in FIG.

The antenna 20 in FIG. 5 is composed of three parts, a first part 20a, a second part 20b and a third part 20c, along the frame of the energized state detection device 10A, which is smart glasses. Corresponding to the first portion 20a of the antenna 20 is the antenna axis a. The second portion 20b of the antenna 20 corresponds to the antenna axis b. Corresponding to the third portion 20c of the antenna 20 is the antenna axis c. The antenna axis of the antenna 20 as a whole extends in the direction of the composite vector obtained by combining the antenna vectors defined by the antenna axis a, the antenna axis b, and the antenna axis c.

FIG. 6 is a flowchart illustrating the process of detecting the energized state of electric wires. The processor 11 acquires reception strength information (St101). The reception intensity information includes information indicating the reception intensity of the antenna 20 corresponding to the energized state of the electric wire. The reception intensity information corresponds to the information accumulated in the audio buffer 53 of the audio interface 50 in FIG. Note that the timing of acquiring the reception intensity information can be started by the user's operation, but other methods may be used. For example, using position information such as GPS (Global Positioning System) information, the processor 11 may detect that the user has approached an electric wire or steel tower, and automatically acquire reception intensity information. Alternatively, the processor 11 may detect that the user has approached an electric wire or steel tower using location information such as GPS information, and prompt the user to start acquiring reception intensity information. By doing so, the user can more safely detect the energized state.

The processor 11 determines whether or not the reception strength indicated by the reception strength information exceeds the first threshold (St102). The reception intensity referred to here may be a value corresponding to the amplitude of the signal received by the antenna 20, for example. The first threshold value may be stored in advance in the memory 12 or the like as a predetermined value. If the reception intensity indicated by the reception intensity information exceeds the first threshold (St102: Yes), the process transitions to step St103. If the reception intensity indicated by the reception intensity information does not exceed the first threshold (St102: No), the process returns to step St101.

At step St103, the processor 11 acquires a captured image obtained by the camera 60 capturing an image of the electric wire. The processor 11 performs image processing on the acquired captured image to calculate an electric wire vector (St104). The electric wire vector corresponds to information indicating the direction of the electric wire. Various modes are conceivable as a method of calculating the electric wire vector executed by the processor 11 . For example, based on the captured image, points having a certain length or longer are extracted from the set of points in the space indicated by the image. A vector starting from one end of the set of points having a certain length or more and ending at the other end can be estimated as a wire vector. Also, steel towers are generally of the same height. Therefore, it is conceivable to specify two pylons from the captured image using any image recognition technique, and to estimate a vector connecting predetermined positions on the two pylons as an electric wire vector. In addition, those skilled in the art may use any method to calculate the electric wire vector.

Subsequently, the processor 11 corrects the reception intensity information acquired in step St101 (St105). The value of the electric wire vector calculated in step St104 is used to correct the reception intensity information.

The reception strength indicated by the reception strength information after correction is referred to as correction strength. The correction strength can be calculated by the following formula (1).

Correction intensity=Received intensity×f(θ) (1)
θ in equation (1) is the angle formed between the wire axis and the antenna axis described above with reference to FIG. 2 . It should be noted that the energized state detection device 10 has already acquired the direction of the antenna axis based on the external file 80 or the gyroscope 21 provided in the antenna 20 (see FIG. 3). Also, the direction of the wire axis has already been acquired as the wire vector in step St104. Therefore, the processor 11 can calculate the angle .theta.

The function f() in equation (1) is a function that defines how much the received intensity should be corrected according to the angle θ formed. This function f() may be pre-stored in the memory 12 or the like, and the processor 11 reads out the function f() from the memory 12 and calculates the function f using the formed angle θ as an input variable. The corrected strength value can be calculated by multiplying the received strength by the output value of the function f(). That is, in step St105, the processor 11 corrects the reception strength information by calculating the correction strength based on the above equation (1).

The processor 11 determines whether or not the correction strength exceeds the second threshold (St106). The second threshold value may be stored in advance in the memory 12 or the like as a predetermined value. If the correction strength exceeds the second threshold (St106: Yes), the process transitions to step St107. If the correction strength does not exceed the second threshold (St106: No), the process returns to step St101.

At step St107, the processor 11 controls the output device 14 to present the energized state of the electric wire to the user. That is, the processor 11 causes the output device 14 to output information indicating the energized state of the electric wire based on the reception intensity indicated by the reception intensity information corrected in step St105.

FIG. 7 is a conceptual diagram showing an example of presentation of the energized state of electric wires. The wristwatch-shaped energized state detection device 10 according to the present embodiment displays the characters "energized" on the display arranged on the dial portion under the control of the processor 11 . It should be noted that the characters "currently energized" correspond to information indicating the energized state of the electric wire. By outputting information indicating the energized state of the electric wire from the output device 14, the user wearing the wristwatch can recognize that the electric wire is energized. If the energized state detection device 10 has a vibration function or an audio output function, the fact that the electric wire is energized may be presented to the user by means of vibration, voice, or the like. Note that the output of information indicating the energized state of the wire, such as the display of the characters "energized", is performed when the corrected strength exceeds the second threshold value, so it is performed based on the received strength indicated by the received strength information. ing.

Next, a modified example of this embodiment will be described.

(Calculation of electric wire vector considering distance to object)
When the camera 60 is a camera with two or more eyes (a camera with two or more lenses) such as a twin-lens camera or a tri-lens camera, the processor included in the camera 60 or the processor 11 of the power supply state detection device 10 detects the captured image. The distance between an object, such as an included electrical wire, and the camera 60 can be measured using parallax. The processor 11 in step St104 can calculate the electric wire vector in the three-dimensional space based on the captured image and the distance. By using this electric wire vector, the processor 11 in step St105 can correct the reception intensity information with higher accuracy.

(Various methods of calculating electric wire vectors based on captured images)
The calculation of the electric wire vector in step St104 may be performed by a method other than the image processing of the image captured by the camera 60. FIG. For example, a wire vector may be calculated using a GPS information receiving device. Electric wires are usually stretched between steel towers. Since a steel tower is a structure, a legal permit is generally required to build a steel tower. Map information may also include information indicating the position of a steel tower. Therefore, the energized state detection device 10 may include a GPS information reception device (not shown). The GPS information receiving device acquires position information indicating the current position of the energized state detection device 10 . Further, the energized state detection device 10 can acquire map information including information indicating the position of the steel tower from the outside via a wireless communication line or the like. Since the technology for acquiring information from the outside via a communication line is common, the description of its specific implementation will be omitted. Map information including information indicating the position of the pylon may be stored in advance in the memory 12 of the energization state detection device 10 . The processor 11 is based on information indicating the current position of the energized state detection device 10 acquired by the GPS information receiving device and information indicating the positions of two or more steel towers near the current position included in the map information. , the electric wire vector can be calculated.

Also, the captured image used for calculating the electric wire vector may be, for example, a grayscale image. However, it is not limited to grayscale images. The energization state detection device 10 can use various images as long as they are images that can be used to calculate the positional relationship with respect to the antenna axis. For example, an image that emphasizes the existence of a steel tower or an electric wire by detecting edges from an image captured by the camera 60 may be used as the captured image. Images captured from various angles by other devices or vehicles, such as aerial photographs and images continuously captured by patrolling vehicles, may be used as the captured images, so that the electric wire vector can be obtained with higher accuracy. can be calculated.

(angle between optical axis and antenna axis)
The angle between the optical axis of camera 60 and the antenna axis of antenna 20 may be a fixed value. This fixed value may be recorded in the external file 80 or memory 12 shown in FIG. However, the angle between the optical axis of camera 60 and the antenna axis of antenna 20 may vary. For example, when the camera 60 and the antenna 20 are provided separately, or when the camera 60 and the antenna 20 are built in one device, a mechanism for changing the direction of the camera 60 or the direction of the antenna 20 (the antenna is If a 90-degree rotation mechanism or the like is provided, the angle between the optical axis of the camera 60 and the antenna axis of the antenna 20 changes. In such a case, at least one of the camera 60 and the antenna 20 is added with a gyroscope. For example, the gyroscope 21 or the like shown in FIG. 3 corresponds to this. Processor 11 corrects the relative angle between the optical axis and the antenna axis based on information obtained from the gyroscope. That is, in one example, the energization state detection device 10 has a gyroscope 21 that detects the angular velocity of the antenna 20 . Processor 11 can calculate the orientation of antenna 20 based on the angular velocity detected by gyroscope 21 . That is, the information indicating the orientation of the antenna 20 is information based on the angular velocity of the antenna 20 detected by the gyroscope 21 . Accordingly, even when the angle between the optical axis of the camera 60 and the antenna axis of the antenna 20 changes, the processor 11 can correctly calculate the relative angle described above.

(Processing when the reception strength is low)
When the reception strength indicated by the reception strength information acquired in step St101 is small, two situations are assumed. The first situation is that the wire is not energized. The second situation is that the wire is energized but the reception by the antenna 20 is weak due to the poor orientation of the antenna 20 with respect to the wire.

In order to prevent the user from misunderstanding that the situation is the first situation when the situation is actually the second situation, the processor 11 sets the reception strength indicated by the reception strength information acquired in step St101 to the third situation. is smaller than the threshold, the output device 14 may output information prompting the user to correct the orientation of the antenna 20 .

FIG. 8 is a conceptual diagram showing an output example of information prompting correction of the orientation of the antenna. In this embodiment, the output device 14 is a display included in the energization state detection device 10 . On this display, a captured image captured by the camera 60 incorporated in the energized state detection device 10 is displayed in real time. An antenna 20 is also incorporated in the energized state detection device 10 .

In the present embodiment, three types of information D1, D2, and D3 are displayed as information prompting correction of the orientation of the antenna 20. FIG. Information D1 is a straight line indicating the current orientation of the antenna axis. Information D2 is a straight line indicating the orientation of the target antenna axis. The information D3 is an arrow indicating the direction in which the energized state detection device 10 should be moved. Based on the information D3, the user rotates the energization state detection device 10 clockwise. Then, the straight line displayed as the information D1 and the straight line displayed as the information D2 overlap. At this time, the angle .theta. between the wire axis and the antenna axis is an angle that increases the reception intensity.

The information prompting to correct the direction of the antenna may be output during the process returning from step St102 to step St101. At this time, the third threshold may be a value equal to or less than the first threshold. Further, in order to acquire information prompting the correction of the orientation of the antenna to be output by the output device 14, the processor 11 may perform the same processing as steps St103 and St104 to calculate the electric wire vector. Then, the processor 11 may calculate the above information D1, D2, and D3 based on the calculated wire vector and the direction of the antenna axis of the antenna 20 with respect to the optical axis of the camera 60 .

As described above, the energization state detection device 10 that detects the energization state of the electric wire includes the processor 11 and the memory 12 . The processor 11 acquires reception intensity information indicating the reception intensity of the antenna 20 corresponding to the energized state of the electric wire. The processor corrects the reception intensity information based on the information indicating the direction of the electric wire and the information indicating the direction of the antenna. Accordingly, it is possible to provide an energization state detection device with high accuracy regardless of the orientation of the antenna.

The energization state detection device 10 further includes an output device 14 that outputs information to the user. The processor 11 causes the output device 14 to output information indicating the energized state of the electric wire based on the reception intensity indicated by the reception intensity information. As a result, it is possible to highly accurately notify the user when the reception strength is strong.

When the reception strength indicated by the reception strength information is smaller than a predetermined threshold, the processor 11 causes the output device 14 to output information prompting the user to correct the orientation of the antenna 20 . This provides an opportunity for the user to correct the orientation of the antenna when the received signal strength is low. In addition, the user can distinguish between the case where the electric wire is not energized and the case where the electric wire is energized but the reception strength is weak due to the orientation of the antenna.

The processor 11 calculates information indicating the direction of the electric wire based on the captured image obtained by imaging the electric wire with the camera 60 . This makes it possible to identify the direction of the electric wire from the image captured by the camera and appropriately correct the reception intensity.

The captured image may be an aerial photograph. As a result, images can be captured from various angles, and the electric wire vector can be calculated with higher accuracy.

The camera 60 has two or more lenses. The processor 11 calculates information indicating the direction of the electric wire based on the captured image and the distance between the camera 60 and the object included in the captured image. This makes it possible to more accurately calculate the direction of the electric wire by utilizing the parallax of two or more cameras.

The energization state detection device 10 further includes a GPS information reception device. The processor 11 calculates information indicating the direction of the electric wire based on the position information of the energized state detection device acquired by the GPS information receiving device and the predetermined map information. Accordingly, the direction of the electric wire can be estimated based on the current position of the energized state detection device 10 and the position of the steel tower included in the map information.

The processor 11 corrects the reception intensity information by multiplying the reception intensity indicated by the reception intensity information by a value corresponding to the angle θ between the orientation of the electric wire and the orientation of the antenna 20 . Thereby, the reception intensity can be appropriately corrected according to the formed angle θ.

In an energization state detection method for detecting an energization state of a wire by a device 10 having a processor 11 and a memory 12, the processor 11 acquires reception intensity information indicating the reception intensity of the antenna 20 corresponding to the energization state of the wire. do. The processor 11 corrects the reception intensity information based on the information indicating the orientation of the electric wire and the information indicating the orientation of the antenna 20 . Accordingly, it is possible to provide an energization state detection device with high accuracy regardless of the orientation of the antenna.

The energization state detection device 10 further includes an output device 14 that outputs information to the user. The energization state detection method has a step of causing the processor 11 to output information indicating the energization state of the electric wire to the output device 14 based on the reception intensity indicated by the reception intensity information. As a result, it is possible to highly accurately notify the user when the reception strength is strong.

The energized state detection method includes the step of causing the processor 11 to output to the output device 14 information prompting the user to correct the orientation of the antenna 20 when the reception strength indicated by the reception strength information is smaller than a predetermined threshold. This provides an opportunity for the user to correct the orientation of the antenna when the received signal strength is low. In addition, the user can distinguish between the case where the electric wire is not energized and the case where the electric wire is energized but the reception strength is weak due to the orientation of the antenna.

The energization state detection method has a step of calculating information indicating the direction of the electric wire based on the captured image obtained by the camera 60 capturing the electric wire. This makes it possible to identify the direction of the electric wire from the image captured by the camera and appropriately correct the reception intensity.

The camera 60 has two or more lenses. In the step of calculating information indicating the direction of the electric wire, the processor 11 calculates information indicating the direction of the electric wire based on the captured image and the distance between the camera 60 and the object included in the captured image. This makes it possible to more accurately calculate the direction of the electric wire by utilizing the parallax of two or more cameras.

The energization state detection device 10 further includes a GPS information reception device. The energized state detection method has a step of calculating information indicating the direction of the electric wire by the processor 11 based on the position information of the energized state detection device acquired by the GPS information receiving device and predetermined map information. Accordingly, the direction of the electric wire can be estimated based on the current position of the energized state detection device 10 and the position of the steel tower included in the map information.

In the step of correcting the reception intensity information, the processor 11 corrects the reception intensity information by multiplying the reception intensity indicated by the reception intensity information by a value corresponding to the angle θ between the orientation of the electric wire and the orientation of the antenna 20. do. Thereby, the reception intensity can be appropriately corrected according to the formed angle θ.

The present disclosure is useful as a highly accurate energization state detection device and energization state detection method.

10, 10A, 10B, 10C energization state detection device 11 processor 12 memory 13 graphic memory 14 output device 20 antenna 21 gyroscope 30 audio board 31 AD conversion circuit 40 audio board 41 DA conversion circuit 50 audio interface 51 audio input unit 52 AD conversion Circuit 53 Audio buffer 60 Camera 70 Capture board 71 AD conversion circuit 72 Frame buffer 80 External file 100 Power supply state detection system

Claims

An energization state detection device for detecting an energization state of an electric wire,
comprising a processor and memory,
The processor
Acquiring reception intensity information indicating the reception intensity of the antenna corresponding to the energized state of the electric wire,
correcting the reception intensity information based on information indicating the direction of the electric wire and information indicating the direction of the antenna;
Energized state detection device.
further comprising an output device for outputting information to the user;
The processor causes the output device to output information indicating the energization state of the electric wire based on the reception intensity indicated by the corrected reception intensity information.
The energization state detection device according to claim 1.
further comprising an output device for outputting information to the user;
The processor causes the output device to output information prompting the user to correct the orientation of the antenna when the reception strength indicated by the reception strength information is smaller than a predetermined threshold.
The energization state detection device according to claim 1.
The processor calculates information indicating the direction of the electric wire based on the captured image obtained by imaging the electric wire with the camera.
The energization state detection device according to any one of claims 1 to 3.
The energization state detection device according to claim 4, wherein the captured image is an aerial photograph.
the camera has two or more lenses,
The processor calculates information indicating the direction of the electric wire based on the captured image and the distance between the camera and an object included in the captured image.
The energization state detection device according to claim 4.
the antenna is fixed relative to the camera;
The information indicating the orientation of the antenna is information indicating the orientation of the antenna with respect to the optical axis of the camera.
The energization state detection device according to claim 4.
further comprising the camera;
The energization state detection device according to any one of claims 4 to 7.
further comprising a gyroscope that detects the angular velocity of the antenna;
The information indicating the orientation of the antenna is information based on the angular velocity of the antenna detected by the gyroscope,
The energization state detection device according to any one of claims 1 to 8.
further comprising the antenna;
The energization state detection device according to any one of claims 1 to 9.
further comprising a GPS information receiving device,
The processor calculates information indicating the direction of the electric wire based on the position information of the energized state detection device acquired by the GPS information reception device and predetermined map information.
The energization state detection device according to any one of claims 1 to 3.
The processor corrects the reception intensity information by multiplying the reception intensity indicated by the reception intensity information by a value corresponding to the angle θ formed between the orientation of the electric wire and the orientation of the antenna.
The energization state detection device according to any one of claims 1 to 11.
An energization state detection method for detecting an energization state of a wire by a device having a processor and a memory,
the processor obtaining reception intensity information indicating the reception intensity of the antenna corresponding to the energized state of the electric wire;
An energization state detection method, wherein the processor corrects the reception intensity information based on information indicating the direction of the electric wire and information indicating the direction of the antenna.
The device further comprises an output device that outputs information to a user,
The energized state detection method includes:
The processor further comprises the step of causing the output device to output information indicating the energization state of the electric wire based on the reception intensity indicated by the corrected reception intensity information.
The energization state detection method according to claim 13.
The device further comprises an output device that outputs information to a user,
The energized state detection method includes:
further comprising the step of causing the output device to output information prompting the user to correct the orientation of the antenna when the received strength indicated by the received strength information is smaller than a predetermined threshold;
The energization state detection method according to claim 13.
The energized state detection method includes:
The processor further comprises a step of calculating information indicating the direction of the electric wire based on the captured image obtained by imaging the electric wire with a camera.
The energization state detection method according to any one of claims 13 to 15.
The energization state detection method according to claim 16, wherein the captured image is an aerial photograph.
the camera has two or more lenses,
In the step of calculating the information indicating the orientation of the electric wire, the processor calculates the information indicating the orientation of the electric wire based on the captured image and the distance between the camera and an object included in the captured image. to calculate
The energization state detection method according to claim 16.
The device further comprises a GPS information receiving device,
The energized state detection method includes:
The processor further comprises a step of calculating information indicating the direction of the electric wire based on the position information of the device acquired by the GPS information receiving device and predetermined map information.
The energization state detection method according to any one of claims 13 to 15.
In the step of correcting the reception intensity information, the processor multiplies the reception intensity indicated by the reception intensity information by a value corresponding to an angle θ between the orientation of the electric wire and the orientation of the antenna. correct the intensity information,
The energization state detection method according to any one of claims 13 to 19.