JP2019002687A - Accident point survey apparatus - Google Patents

Abstract

To reduce the burden on workers involved in movement and to quickly restore from accident point exploration and ground fault accident.SOLUTION: Mounting a CT receiver and an imaging device on airplane equipped with a wireless device for performing wireless communication with an operation terminal device 120 and operated remotely by wireless communication by the wireless device to fly unmanned, image information captured by the imaging device is output to the operation terminal device 120 by the wireless device. As a result, the worker 101 can search for an accident point without moving to the vicinity of the accident point.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an accident point search device used for an accident point search.

  When a power failure occurs due to a distribution line accident, an accident point search is performed to identify the cause of the accident using an accident point search device. When searching for an accident point, a CT receiver that applies a DC pulse from the transmitter to the distribution line via the power distribution cable in the failure section and traps the failure current flowing through the accident point (ground fault point) on the distribution line. Exploring the accident point by detecting by.

  Specifically, for example, conventionally, for example, a radio control helicopter that supports a CT receiver is remotely operated, and the CT receiver is hooked on a distribution line in the accident section to search for an accident point. (For example, see Patent Document 1 below.)

Japanese Patent Laid-Open No. 2015-17878

  However, since the conventional technique including the technique described in Patent Document 1 described above requires the CT receiver to be hooked on the overhead line at the site where the accident point search is performed, the worker must be in the field. There was a problem that it took time to move to the site and it was difficult to recover quickly.

  In particular, when conducting an accident point exploration in the mountainous area at night, it is necessary to move in the dark with a set of ascending pillar tools such as a safety belt, etc. There is a problem that the burden on the worker is large.

  In addition, the above-described conventional technique has a problem that, when the accident point search performed by a small number of people becomes a wide range, it takes time to move, the work becomes long, and the burden on the worker is large.

  The present invention provides an accident point search device capable of reducing the burden on the worker for movement and quickly recovering from an accident point search and a ground fault in order to eliminate the above-described problems caused by the prior art. The purpose is to do.

  In order to solve the above-described problems and achieve the object, an accident point search apparatus according to the present invention is equipped with a radio that performs radio communication with a control device and the radio, and the radio communication performed by the radio An aerial device that is remotely operated by an unmanned aircraft, a CT receiver that is mounted on the aerial device and detects a current flowing through a distribution line based on a magnetic flux received by a loop antenna, and is mounted on the aerial device. An image pickup device that picks up an image of the surroundings of the device, and the wireless device outputs image information picked up by the image pickup device through wireless communication.

  Moreover, the accident point search device according to the present invention is characterized in that, in the above invention, the imaging device images a predetermined range including the loop antenna.

  Moreover, the accident point search device according to the present invention is characterized in that, in the above-mentioned invention, the loop antenna is provided so as to protrude vertically above the aircraft device.

  According to the accident point search device according to the present invention, it is possible to reduce the burden on a worker who moves, and to quickly recover from an accident point search and a ground fault.

It is explanatory drawing which shows the system configuration | structure of an accident point search system. It is explanatory drawing (the 1) which shows the external appearance of an accident point search apparatus. It is explanatory drawing (the 2) which shows the external appearance of an accident point search apparatus. It is explanatory drawing which shows the hardware constitutions of an accident point search apparatus. It is explanatory drawing which shows the hardware constitutions of an operating terminal device. It is explanatory drawing (the 1) which shows the example of a display screen which the display of an operating terminal device displays. It is explanatory drawing (the 2) which shows the example of a display screen which the display of an operating terminal device displays. It is explanatory drawing (the 3) which shows the example of a display screen which the display of an operating terminal device displays.

  Exemplary embodiments of an accident point search apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

(System configuration of accident point search system)
First, the system configuration of the accident point search system according to the embodiment of the present invention will be described. FIG. 1 is an explanatory diagram showing a system configuration of the accident point search system. In FIG. 1, the accident point search system 100 includes an accident point search device 110 and an operation terminal device 120.

  The accident point searching device 110 can wirelessly communicate with the operation terminal device 120 and flies according to a wireless long-distance operation by the operation terminal device 120. Moreover, the accident point search apparatus 110 can fly to the destination autonomously by setting the destination by prior programming.

  The operation terminal device 120 includes a communication function for performing communication with the accident point search device 110, an operation unit used for remote operation of the accident point search device 110, a display screen for displaying an image captured by the accident point search device 110, and the like. ing. The operation means can be realized by, for example, a touch pad stacked on the display screen.

  In the accident point search system 100, the operator 101 operates the operation terminal device 120 to fly the accident point search device 110 to the vicinity of the accident point by remote operation, and the ground fault current flowing through the distribution line 102 around the accident point is generated. The accident point is identified by detecting it.

(Appearance of accident point search device 110)
Next, the appearance of the accident point search device 110 will be described. 2A and 2B are explanatory views showing the appearance of the accident point search device 110. FIG. 2A shows a state in which the accident point searching device 110 is viewed from the side, and FIG. 2B shows a state in which the accident point searching device 110 is viewed from the front (in the direction of arrow A in FIG. 2A). 2A and 2B, the accident point search device 110 includes an aircraft device 210, a CT (Current Transformer) receiver 220, and imaging devices 230 and 240.

  The aircraft device 210 can be realized by a so-called drone equipped with a plurality of propellers 211. Specifically, the aviation device 210 can be realized by various multicopters such as a quadcopter having four propellers, a hexacopter having six propellers, and an octocopter having eight propellers. By realizing the aviation device 210 with a multicopter, the forward and backward movement and hovering can be performed only by adjusting the rotation speed of the propeller 211, and good operability of the aviation device 210 can be ensured. .

  The CT receiver 220 includes a loop antenna 221 and a receiver main body 222. The loop antenna 221 has a ring shape and receives a magnetic flux in a magnetic field formed by a current flowing through the distribution line 102 in the loop. When the loop antenna 221 receives the magnetic flux, a current flows in the loop antenna 221 by the magnetic flux. The receiver main body 222 has a built-in CT for detecting the current flowing through the loop antenna 221 (see FIG. 3).

  The imaging devices 230 and 240 each include a housing that supports a lens, imaging elements 231 and 241 (see FIG. 3), and the like. 2A and 2B, only the lens provided in the imaging device 240 is illustrated.

  The housing may be integral with the housing 212 of the aircraft device 210. The image sensors 231 and 241 are elements that convert light incident through corresponding lenses into electrical signals. Specifically, for example, a CCD (Charge Coupled Devices) element or a CMOS (Complementary Metal Oxide Semiconductor) element. Can be realized.

  The imaging devices 230 and 240 can be realized by, for example, a general-purpose digital camera. When the imaging devices 230 and 240 are realized by a general-purpose digital camera, the accident point search device 110 may be provided with a light source for imaging assistance in preparation for night accident point search. As a light source for assisting imaging, for example, a light-emitting body that is lightweight and has low power consumption, such as a high-intensity LED, can be used.

  The imaging devices 230 and 240 are not limited to general-purpose digital cameras. For example, the imaging devices 230 and 240 are realized by a night vision camera that captures a dark place by amplifying sensitivity to light, or an infrared camera that is sensitive to infrared rays. May be. By mounting such a camera, it is possible to obtain a clear image without using a light source for assisting imaging even when searching for an accident point at night. Thereby, an increase in the weight and power consumption of the accident point search device 110 can be suppressed.

  The accident point search device 110 of this embodiment includes two imaging devices 230 and 240. One imaging device 230 is provided so as to capture a predetermined range including the loop antenna 221. The other imaging device 240 is provided in front of the accident point search device 110 and is provided so as to take an image of the periphery of the accident point search device 110.

  The imaging devices 230 and 240 may be configured such that the lens is movable and the imaging range can be changed and adjusted. The lens may be a equidistant projection type fisheye lens. In order to reduce the weight of the accident point search device 110 by using a fish-eye lens having an angle of view of 180 degrees or more, even when using the small imaging devices 230 and 240, a wide range is imaged and the operation terminal device 120 is operated. Information provided to the worker 101 can be increased.

  The accident point search device 110 is not limited to the one including the two imaging devices 230 and 240. One imaging device 230 or imaging device 240 may be provided, and three or more imaging devices may be provided. In addition, the imaging devices 230 and 240 are not limited to those in which the imaging range is fixed, but may be configured such that a lens or the like is movable and the imaging range can be changed and adjusted.

  The accident point search device 110 includes a battery not shown. The aircraft device 210, the CT receiver 220, and the imaging device 230 are operated by a power source supplied from a battery. For example, a lithium polymer battery can be used as the battery. The battery may be a hydrogen battery. Alternatively, the battery may be a secondary battery that can be powered by wireless power feeding.

(Hardware configuration of accident point search device 110)
Next, the hardware configuration of the accident point search device 110 will be described. FIG. 3 is an explanatory diagram showing a hardware configuration of the accident point search apparatus 110. In FIG. 3, the hardware of the accident point search device 110 includes a motor 310, imaging devices 230 and 240, a CT receiver 220, a GPS (Global Positioning System) receiver 350, a radio 360, and a control circuit 370. . The motor 310 is controlled by the control circuit 370 and rotates the propeller 211.

  The CT receiver 220 includes a loop antenna 221 and a CT 322. The CT 322 outputs a detection signal corresponding to the magnitude of the current flowing through the loop antenna 221. When the ground fault current is generated, the magnetic flux density increases as the distance from the distribution line 102 increases. Therefore, the current flowing through the loop antenna 221 by receiving the magnetic flux increases as the distance from the distribution line 102 increases. Then, the magnetic flux density of the magnetic field generated by the current flowing through the distribution line 102 becomes higher as it is closer to the distribution line 102, and becomes lower as it is farther away.

  The two imaging devices 230 and 240 include imaging elements 231 and 241 and image processing circuits 232 and 242, respectively. The image processing circuits 232 and 242 perform image processing based on electric signals output from the corresponding image pickup devices 231 and 241. Specifically, the image processing circuits 232 and 242 perform various types of image processing such as demosaic processing, noise removal processing, gradation correction processing, and face detection processing, for example.

  The GPS receiver 350 includes a GPS antenna 351, an RF (Radio Frequency) unit 352, and a baseband unit 353. The GPS antenna 351 receives radio waves broadcast by GPS satellites. The RF unit 352 demodulates the signal before modulation received by the GPS antenna 351 into a baseband signal. The baseband unit 353 calculates the current position of the accident point search device 110 based on the baseband signal demodulated by the RF unit 352.

  The current position of the accident point search device 110 can be specified by positioning based on radio waves transmitted from a plurality of GPS satellites. The baseband unit 353 calculates the distance from each of the four GPS satellites, and performs positioning by calculating the position at which each distance intersects. Instead of the GPS for obtaining the geometric position between the GPS satellite and the accident point search device 110 based on the radio wave received from the GPS satellite, a satellite positioning system such as Michibiki, GLONASS, Galileo, or the like is used. The current position of the accident point search device 110 may be specified.

  The wireless device 360 includes an antenna 361, an RF unit 362, and a baseband unit 363. The antenna 361 receives electromagnetic waves and converts them into electrical signals. The antenna 361 converts the electric signal output from the control circuit 370 into an electromagnetic wave. The RF unit 362 demodulates the analog signal before modulation received by the antenna 361 into a baseband signal. In addition, the RF unit 362 performs signal processing on the analog signal output from the baseband unit 363 after D / A conversion, and outputs the analog signal to the antenna 361.

  The baseband unit 363 outputs the baseband signal demodulated by the RF unit 362 to the control circuit 370. In addition, the baseband unit 363 outputs various information output from the control circuit 370 to the RF unit 362. The wireless device 360 may further include a filter that removes unnecessary components, and an amplifier such as an LNA (Low Noise Amplifier) or a power amplifier PA (Power Amplifier).

  The control circuit 370 is configured by a CPU, a memory, and the like, and drives and controls each unit included in the accident point search device 110. Specifically, the control circuit 370 includes a flight controller, an ESC (Electronic Speed Controller), and the like. The control circuit 370 may further include a BEC (Battery Elimination Circuit) or a UBEC (Universal BEC).

  The flight controller performs calculations related to the rotation control of the motor 301 and outputs a control signal. The ESC controls the rotation of the motor 301 based on the control signal output from the flight controller. The flight controller detects the inclination of the aviation apparatus 210 during the flight of the aviation apparatus 210, repeats the calculation, and recursively outputs a control signal for the motor 301.

  The flight controller outputs a control signal for controlling the rotation direction and the rotation speed of the propeller 211 (the motor 301 of the propeller 211) based on the control signal transmitted from the operation terminal device 120. Specifically, for example, the rotation of the own apparatus is prevented by controlling the adjacent propellers 211 to rotate in the reverse direction. Further, for example, the own apparatus is advanced by controlling the front propeller 211 to rotate slower than the rear propeller 211. Further, for example, by controlling the right propeller 211 to rotate more slowly than the left propeller 211, the own apparatus is turned rightward.

  When communication with the operation terminal device 120 becomes impossible, the flight controller outputs a control signal so as to automatically return itself to a predetermined reference point. The reference point is, for example, the position of the business office to which the worker 101 belongs, and information regarding the reference point is stored in, for example, a memory that configures the control circuit 370.

  The flight controller performs calculation based on the power pole position information indicating the position where the power pole is installed, and outputs a control signal, so that the designated power pole can be designated by so-called autopilot without being operated by the operator 101. A control signal is output so as to move to the vicinity of. In this case, the utility pole position information is stored in, for example, a memory included in a microcomputer that realizes a flight controller.

  In addition, the control circuit 370 identifies the accident point based on the output signal from the CT 322. As described above, the magnetic flux density of the magnetic field generated by the current flowing through the distribution line 102 increases as the distance from the distribution line 102 increases, and decreases as the distance increases. For this reason, the control circuit 370 specifies the position where the current flowing through the loop antenna 221 is the largest as the accident point based on the output signal from the CT 322. Information regarding the identified accident point is output to the operation terminal device 120 via the wireless device 360.

  The identification of the accident point is not limited to that performed by the control circuit 370. For example, the current value specified based on the output signal from the CT 322 may be transmitted to the operation terminal device 120 so that the worker 101 who operates the operation terminal device 120 specifies the accident point. Further, the control circuit 370 outputs the image information output from the imaging device 230 and the position information of the accident point search device 110 specified by the GPS receiver 350 to the operation terminal device 120 via the wireless device 360.

(Hardware configuration of operation terminal device 120)
Next, the hardware configuration of the operation terminal device 120 will be described. FIG. 4 is an explanatory diagram illustrating a hardware configuration of the operation terminal device 120. In FIG. 4, the hardware of the operation terminal device 120 includes a control circuit 410, a display 420, a touch pad 430, and a wireless device 440.

  The control circuit 410 is configured by a CPU, a memory, and the like, and drives and controls each unit included in the operation terminal device 120. The display 420 is controlled by the control circuit 410 and displays various information such as an image based on the image information output from the accident point search device 110 and a stick image used for operating the accident point search device 110.

  The touch pad 430 is stacked on the display screen side of the display 420 and constitutes the touch panel 400 together with the display 420. The touch pad 430 outputs a signal corresponding to the position where the finger of the worker 101 is in contact with the control circuit 410. The touch pad 430 functions as a stick that receives an operation of the accident point search device 110 by the worker 101.

  The wireless device 440 is controlled by the control circuit 410 to output a control signal corresponding to the operation received on the touch pad 430 to the accident point search device 110 or various information output from the accident point search device 110. Or output to the control circuit 410. The wireless device 440 includes an antenna 441, an RF unit 442, and a baseband unit 443. Since the configuration of the wireless device 440 is the same as that of the wireless device 360 described above, description thereof is omitted.

  The operation terminal device 120 has a plurality of operations such as an operation mode in which an operation on a stick is received in a state where an image captured by the accident point search device 110 is displayed, and a position display mode in which the current position of the accident point search device 110 is guided. Can operate in mode.

(Display screen example)
Next, a display screen example displayed on the display 420 of the operation terminal device 120 will be described. 5-7 is explanatory drawing which shows the example of a display screen which the display 420 of the operating terminal device 120 displays. FIG. 5 shows a display screen 501 displayed on the display 420 when the position display mode is set.

  In FIG. 5, the position display mode display screen 501 displays a map indicating the current position of the accident point search device 110, a mode selection key 502 for selecting an operation mode, and the like. As described above, a plurality of operation modes such as “operation mode” and “position display mode” can be set. The worker 101 operates a mode selection key 502 corresponding to the content to be confirmed.

  As the operation mode, a “recording mode” in which an image captured by the imaging device 230 is stored in the accident point search device 110 or the operation terminal device 120 may be set. By setting the recording mode, the work content can be confirmed after the work, teaching the worker 101 who has not been on the work site, and training the operator of the accident point search device 110 Or can be used as

  6 and 7 show display screens 601 and 701 displayed on the display 420 when the operation mode is set. The operation mode display screens 601 and 701 display an image 602 captured by the imaging device 230 of the accident point search device 110 and a stick image 603 used for operation of the accident point search device 110. Since the touch pad 430 is stacked on the display screen side of the display 420, the touch pad 430 can be operated while visually confirming the position of the stick image 603 displayed on the display screen. The touch pad 430 receives, for example, operations such as an up / down operation (throttle), a forward / backward movement operation (elevator), a left / right movement operation (aileron), and a left / right turn operation (ladder).

  Two stick images 603 are displayed on the operation mode display screens 601 and 701. For example, different operations are assigned to the operation position indicated by the left stick image 603 and the operation position indicated by the right stick image 603. Specifically, for example, the vertical operation on the left stick can be assigned to the elevator, the horizontal operation can be assigned to the ladder, the vertical operation on the right stick can be assigned to the throttle, and the horizontal operation can be assigned to the aileron.

  In FIG. 7, when the accident point search device 110 to be communicated includes a plurality of imaging devices 230, a plurality of images 702 and 703 captured by each imaging device 230 are displayed side by side on the display 420 on the operation mode display screen 701. can do. In this way, by displaying the images 702 and 703 side by side, the worker 101 can accurately grasp the situation at the site even when not at the site where the accident point search is performed.

  When the accident point search device 110 to be communicated includes a plurality of imaging devices, the display screen 701 in the operation mode is divided into a plurality of regions on the display 420 according to the number of imaging devices, and each region is imaged. Images taken by the device can be displayed. At this time, the number of images to be displayed side by side on the display 420 is set to the maximum number of imaging devices included in one accident point search device 110 so that an operator can arbitrarily set the range. Also good.

  In addition, when the accident point search device 110 to be communicated includes a plurality of imaging devices, on the operation mode display screen 701, a plurality of images captured by each imaging device are switched and displayed by the operation of the operator 101. Also good. In addition, when one of the images 702 and 703 is selected on the display screen 701 shown in FIG. 7 by touching the image, the image is displayed so that only the selected image is displayed on the display 420. An enlarged display may be used.

  Specifically, as shown in FIG. 6, only the selected image 602 is displayed. Thereby, on the limited display 420 in the operation terminal device 120, each of the images captured by the plurality of imaging devices 230 can be visually observed in a large size. In this way, by arranging and displaying a plurality of images taken by a plurality of imaging devices 230, the situation of the site is accurately grasped, and by enlarging the image for a portion to be confirmed in detail, the worker 101 can Even if you are not at the site where you perform the accident point exploration, you can accurately grasp the situation at the site.

(Outline of accident point exploration work)
Next, an overview of the accident point exploration work will be described. When searching for an accident point using the accident point search system 100, first, the operation terminal device 120 is operated to fly the accident point search device 110. At this time, the approximate position estimated as the accident point is specified by the utility pole position information, and by specifying the utility pole position information, the accident point search device 110 is moved to the approximate position estimated as the accident point by automatic operation. Can be made.

  After moving the accident point search device 110 to the vicinity of the accident point, the operator 101 operates the left and right sticks while checking the image captured by the imaging device 230 to bring the loop antenna 221 closer to the distribution line 102. To detect the ground fault current. By performing the operation of bringing the loop antenna 221 close to the distribution line 102 while confirming an actual image, it is possible to reliably avoid the loop antenna 221 and the accident point search device 110 itself from contacting the distribution line 102. When searching for an accident point, the accident point searching device 110 detects a ground fault current while sequentially moving to the W phase, the U phase, and the V phase. Thereby, a ground fault point can be specified correctly.

  The accident point searching device 110 may further include a sensor (not shown) that detects an obstacle located around the accident point searching device 110. Specifically, the sensor uses, for example, a “millimeter wave radar method” that detects obstacles by irradiating millimeter waves forward in the direction of travel and measuring the returned radio waves, or a thin, highly directional infrared laser. Obstacles can be detected using various known techniques such as an “infrared laser system” that detects an obstacle by irradiating and detecting the infrared rays that have returned.

  Further, an obstacle may be detected by the imaging device 230 provided in the accident point search device 110, and a function of avoiding a collision with the obstacle may be realized. Specifically, the presence or absence of an obstacle is specified by performing an image recognition process based on an image captured by the imaging device 230. In addition, when the accident point search device 110 includes a plurality of imaging devices 230, the distance from the two imaging devices 230 to the obstacle can be specified. Specifically, the distance from the imaging device 230 to the obstacle can be measured using the principle of trigonometry.

  As described above, when the sensor for detecting the obstacle is provided, the flight controller does not move according to the remote operation, and based on the detection result of the sensor, the accident point search device 110 collides with the obstacle. Give priority to the work to avoid. Thereby, it can avoid damaging the distribution line 102 or damaging the accident point search device 110.

  Further, the imaging device 230, 240 of the accident point search device 110 is provided with a function of a so-called infrared thermography device that detects infrared radiant energy emitted from the measurement object and displays the temperature distribution converted into the temperature of the appearance as an image. May be. Thereby, even in a situation where there is little outside light such as at night, the function of the infrared thermography device can be appropriately validated by remote switching using the operation terminal device 120. Thus, it is possible to easily confirm the deficiencies and damages of the power transmission and distribution equipment such as cracking of the insulator.

  As described above, the accident point searching device 110 according to the embodiment of the present invention includes the radio 360 that performs radio communication with the operation terminal device 120 and the radio 360, and the radio 360 uses the radio 360. An aircraft device 210 that is remotely operated by radio communication and flies unattended, a CT receiver 220 that is mounted on the aircraft device 210 and detects the current flowing through the distribution line 102 based on the magnetic flux received by the loop antenna 221, and the aircraft device 210 And an imaging device 230 that images the surroundings of the aviation device 210. The wireless device 360 outputs image information captured by the imaging device 230 by wireless communication.

  According to the accident point exploration device 110 according to the embodiment of the present invention, by outputting the image information of the aircraft device 210 by wireless communication, the image information is received by the operation terminal device 120 and displayed on the display screen, The aircraft device 210 can be remotely operated while viewing the image. Thereby, the worker 101 can perform the accident point search without moving to the vicinity of the accident point.

  As described above, when the accident point search is performed, it is not necessary to move the worker 101 to the vicinity of the accident point, so that the time required for the movement can be reduced and the accident point search can be started at an early stage. As a result, it is possible to reduce the burden on the worker 101 involved in the movement, and to quickly recover from an accident point search and a ground fault.

  In particular, even in the event of a distribution line accident at night, in mountainous areas, there is no movement in the dark while carrying a set of ascending pillar tools such as safety belts. Therefore, it is possible to reduce the burden on the operator.

  Moreover, the accident point search device 110 according to the embodiment of the present invention is characterized in that the imaging device 230 images a predetermined range including the loop antenna 221.

  According to the accident point search device 110 of the embodiment of the present invention, by outputting image information of a predetermined range including the loop antenna 221 by wireless communication, for the worker 101 who remotely operates the aircraft device 210, The position of the loop antenna 221 with respect to the distribution line 102 can be reliably recognized. Thereby, the operator 101 can perform an accident point search without bringing the accident point search device 110 into contact with the distribution line 102 without moving to the vicinity of the accident point.

  In addition, the accident point searching device 110 according to the embodiment of the present invention is characterized in that the loop antenna 221 is provided so as to protrude above the aircraft device 210 in the vertical direction.

  According to the accident point searching device 110 according to the embodiment of the present invention, since the loop antenna 221 protrudes upward in the vertical direction from the aircraft device 210, the accident point searching device 110 is connected to the distribution line 102 from below the distribution line 102. Accident point exploration can be conducted. There are fewer objects reflected in the image when the accident point search device 110 is approached from below the power distribution line 102 than when it is approached from the upper side of the distribution line 102. Thereby, it is possible to avoid the accident point search device 110 from being brought into contact with the distribution line 102 or the like due to an erroneous recognition of an image.

  As described above, the accident point search device according to the present invention is useful for an accident point search device used for an accident point search, and is particularly suitable for an accident point search device used for an accident point search in a mountainous area at night. .

DESCRIPTION OF SYMBOLS 100 Accident point search system 110 Accident point search device 120 Operation terminal device 210 Aviation device 211 Propeller 220 CT receiver 221 Loop antenna 222 Receiver main body 230, 240 Imaging device 310 Motor 360 Radio 361 Antenna 362 RF unit 363 Baseband unit 370 Control circuit

Claims (3)

A radio that performs wireless communication with the control device;
An aircraft that is equipped with the wireless device and is remotely operated by wireless communication by the wireless device and flies unattended;
A CT receiver mounted on the aviation device for detecting the current flowing through the distribution line based on the magnetic flux received by the loop antenna;
An imaging device mounted on the aviation device for imaging the periphery of the aviation device;
With
The accident point search device, wherein the wireless device outputs image information picked up by the image pickup device by wireless communication.   The accident point search device according to claim 1, wherein the imaging device images a predetermined range including the loop antenna.   The accident point search device according to claim 1, wherein the loop antenna is provided so as to protrude vertically above the aircraft device.

Images