Iron tower operation monitoring system and iron tower operation monitoring method

Abstract

To provide an iron tower operation monitoring system capable of accurately monitoring an operator.SOLUTION: An iron tower operation monitoring system for monitoring whether an operator who performs an operation with respect to an electric wire where current is not flowing is approaching a live wire where the current is flowing in an iron tower where the live wire and the electric wire where the current is not flowing are installed includes: an image photographing section for photographing the iron tower so as to obtain a photographed image; a setting section for setting a dangerous range in the photographed image photographed by the image photographing section; a recognition section for recognizing the operator when the operator exists in the photographed image; a detection section for detecting whether the operator enters the dangerous range; and a warning section for outputting warning information based on a detection result of the detection section.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a tower work monitoring system and a tower work monitoring method for monitoring workers performing work on a tower. [Background technology]

[0002] High voltage is applied to the power lines of transmission line towers, and the lines are becoming larger and more numerous. Workers on transmission line towers climb towers as high as 100 meters, for example, to perform overhead line installation (repair work). Therefore, various methods have been proposed to prevent accidents to workers. For example, Patent Document 1 proposes a method in which a sensor that detects the approach of a worker to a live part is activated, and an alarm is sounded to notify the worker of the danger. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-344635 Summary of the Invention [Problem to be solved by the invention]

[0004] In this regard, highly accurate worker monitoring is necessary to enable workers to work on steel towers more safely.

[0005] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a tower work monitoring system and a tower work monitoring method that enable highly accurate monitoring of workers. [Means for solving the problem]

[0006] The present disclosure relates to a tower work monitoring system that monitors whether a worker working on a dead electric wire in a tower on which live electric wires with current flowing and dead electric wires are installed is approaching the live wires, and includes an imaging unit that captures an image of the tower to obtain an image, a setting unit that sets a danger zone within the image captured by the imaging unit, a recognition unit that recognizes the worker if present within the image, a detection unit that detects whether the worker has entered the danger zone, and a warning unit that outputs warning information based on the detection results of the detection unit. [Effects of the Invention]

[0007] According to the present disclosure, the tower work monitoring system and tower work monitoring method enable highly accurate monitoring of workers. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating the overall configuration of a tower work monitoring system 1 according to the first embodiment. [Figure 2] FIG. 2 is a diagram illustrating a monitoring device 30 according to the first embodiment and various external devices connected to the monitoring device 30. As shown in FIG. [Figure 3] FIG. 3 is a diagram illustrating an example of a monitoring screen 402 on the display 24 according to the first embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of another monitoring screen 404 on the display 24 according to the first embodiment. [Figure 5] FIG. 5 is a diagram illustrating an example of another monitoring screen 406 on the display 24 according to the first embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of another monitoring screen 408 on the display 24 according to the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating a monitoring process flow of the monitoring device 30 according to the first embodiment. [Figure 8]FIG. 8 is a diagram illustrating a monitoring device 30# according to the second embodiment and various external devices connected to the monitoring device 30#. [Figure 9] FIG. 9 is a diagram illustrating an example of a monitoring screen 410 on the display 24 according to the second embodiment. [Figure 10] FIG. 10 is a diagram illustrating the setting of the danger zone by the setting unit 10 according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] (1) A tower work monitoring system according to the present disclosure, which monitors whether a worker working on a non-current-carrying electric wire in a tower on which a current-carrying live wire and a non-current-carrying electric wire are approaching the live wire, an imaging unit that captures an image of the steel tower and obtains a captured image; a setting unit that sets a danger zone within the captured image captured by the imaging unit; a recognition unit that recognizes the worker when the worker is present in the captured image; a detection unit that detects whether the worker has entered the danger zone; and a warning unit that outputs warning information based on the detection result of the detection unit. According to the present disclosure, highly accurate worker monitoring is possible.

[0011] (2) The apparatus may further include a display unit that displays the captured image, which makes it possible to determine whether the imaging unit has correctly captured an image of the steel tower in the captured image.

[0012] (3) The display unit may display the danger zone set by the setting unit within the captured image. This allows the user to determine through the display unit whether the danger zone within the captured image is set to an appropriate range.

[0013] (4) When the recognition unit recognizes the worker, the display unit may display a worker recognition display indicating that the worker has been recognized. This allows the user to determine through the display unit whether the worker in the captured image has been correctly recognized.

[0014] (5) The recognition unit recognizes the position of the worker when the worker is present in the captured image, When the recognition unit recognizes the worker, the display unit may display a worker frame surrounding the worker according to the position of the worker as the worker recognition display. In this way, it can be determined through the display unit whether the size of the worker is correctly recognized by the worker frame.

[0015] (6) The recognition unit recognizes the area in which the worker is located within the captured image, When the recognition unit recognizes the worker, the display unit may display, as the worker recognition display, a worker frame that changes in accordance with the range the worker is located in. In this way, if the worker's posture changes, for example, if the worker stretches out their arm, making the work dangerous, the size of the worker frame changes, allowing the danger to be properly recognized.

[0016] (7) The display unit displays the danger area according to a first color, The warning unit may change the danger zone to a second color different from the first color as the warning information based on the detection result of the detection unit. In this way, the color displayed on the danger zone on the display unit changes to a different color, making it easier for the worker to recognize that he or she has entered the danger zone.

[0017] (8) The warning unit When the worker does not enter the danger zone as a result of the detection by the detection unit, a first display is displayed on the display unit; When the worker enters the danger zone as a result of detection by the detection unit, a second display different from the first display may be displayed on the display unit. In this way, the display content changes when the worker enters the danger zone, making it easier for the worker to recognize that he or she has entered the danger zone.

[0018] (9) The imaging unit is installed at a position lower than the height position of the cross arm of the steel tower, The imaging unit may be installed so as to capture an image of the arm positioned above the horizontal direction. In this case, the imaging unit captures an image of the arm positioned above from a position lower than the height position of the arm, thereby reducing the possibility of people other than the worker entering the captured image and enabling highly accurate monitoring.

[0019] (10) The imaging unit may be installed in a position where the captured image does not include the sun. In this case, the imaging unit is installed in a position where the captured image does not include the sun, thereby suppressing the influence on the captured image and enabling highly accurate monitoring.

[0020] (11) The imaging unit is provided so as to be movable. This allows the imaging unit to be installed in an appropriate position to capture images, thereby enabling highly accurate monitoring.

[0021] (12) The imaging unit may be a thermal camera, which allows for highly accurate monitoring, even at night.

[0022] (13) A setting input unit that receives a setting input for the danger zone may be further provided. In this case, the danger zone is set by the setting input of the monitor, so that the setting can be made according to the monitor's intention, and highly accurate monitoring is possible.

[0023] (14) The warning unit may output warning information by at least one of light, sound, and vibration based on the detection result of the detection unit. In this way, the warning information is output by at least one of light, sound, and vibration, which makes it possible to alert the worker to the work and enables highly accurate monitoring.

[0024] (15) The setting unit an extraction unit that extracts cross arms of the steel tower from the captured image; The present invention may further include a range setting unit that sets a predetermined range as a danger range based on the tip positions of the cross arms of the pylon extracted by the extraction unit. In this way, the predetermined range is set as the danger range based on the tip positions of the cross arms, which makes it possible to perform highly accurate monitoring while making the setting work more efficient.

[0025] (16) The range setting unit may change the size of the predetermined range based on the magnitude of the voltage supplied to the live line. In this way, the size of the predetermined range is changed based on the magnitude of the voltage supplied to the live line, making it possible to set a danger range that matches the equipment status of the pylon, and enabling highly accurate monitoring.

[0026] (17) The setting unit sets first and second danger zones having different danger levels, the detection unit detects whether the worker has entered the first or second hazardous area set by the setting unit, The warning unit may output first warning information or second warning information based on the detection result of the first danger zone or the second danger zone by the detection unit. This makes it possible to output first warning information or second warning information according to the danger level, thereby enabling highly accurate monitoring by calling the worker's attention to the work in a manner that matches the danger level.

[0027] (18) A tower work monitoring system according to the present disclosure that monitors whether a worker working on a tower on which a live wire through which an electric current is flowing is approaching the live wire, an imaging unit that captures an image of the steel tower and obtains a captured image; a setting unit that sets a danger zone within the captured image captured by the imaging unit; a recognition unit that recognizes the worker when the worker is present in the captured image; a detection unit that detects whether the worker has entered the danger zone; and a warning unit that outputs warning information based on the detection result of the detection unit. According to the present disclosure, highly accurate monitoring of workers is possible.

[0028] (19) A tower work monitoring method according to the present disclosure, in which a live wire carrying a current and a non-current carrying electric wire are installed, monitors whether a worker working on the non-current carrying electric wire approaches the live wire, A step of capturing an image of the steel tower to obtain a captured image; setting a danger zone within the captured image; If the worker is present in the captured image, recognizing the worker; detecting whether the worker has entered the danger zone; and outputting warning information based on the detection result. According to the present disclosure, highly accurate worker monitoring is possible.

[0029] (20) The method may further include a step of displaying the captured image, which makes it possible to determine whether the steel tower in the captured image has been captured correctly.

[0030] (21) The displaying step may include a step of displaying the set danger zone in the captured image, which makes it possible to determine whether the danger zone in the captured image is set to an appropriate range.

[0031] (22) The display step may include a step of displaying a worker recognition display indicating that the worker has been recognized when the worker is recognized. This makes it possible to determine whether the worker in the captured image has been correctly recognized.

[0032] (23) The step of recognizing includes a step of recognizing a position of the worker when the worker is present in the captured image, The displaying step may include a step of displaying a worker frame surrounding the worker according to the position of the worker as the worker recognition display when the worker is recognized, which makes it possible to determine whether the size of the worker is correctly recognized by the worker frame.

[0033] (24) The step of recognizing includes a step of recognizing a range in which the worker is located within the captured image, The display step may include a step of, when the worker is recognized, displaying, as the worker recognition display, a worker frame that changes in accordance with the range in which the worker is located, in accordance with the range in which the worker is present. According to this, if the worker's posture changes, for example, if the worker stretches out his / her hand, making the work dangerous, the size of the worker frame changes, so that the danger can be properly recognized.

[0034] (25) The displaying step includes a step of displaying the danger area according to a first color, The step of outputting the warning information may include a step of changing the color of the danger area to a second color different from the first color as the warning information based on the detection result. In this way, the color displayed in the danger area changes to a different color, making it easier for the worker to recognize that he or she has entered the danger area.

[0035] (26) The step of outputting the warning information includes: displaying a first indication when the detection result indicates that the worker has not entered the danger zone; The method may further include a step of displaying a second display different from the first display when the detection result indicates that the worker has entered the danger zone. In this way, the display content changes when the worker has entered the danger zone, making it easier for the worker to recognize that he or she has entered the danger zone.

[0036] (27) The step of obtaining the captured image may use a camera that is installed at a position lower than the height of the cross arm of the pylon and that is installed so as to capture an image of the cross arm that is located above the horizontal direction. In this case, since the image is captured from a position lower than the height of the cross arm toward the cross arm that is located above, the possibility of people other than the worker entering the captured image is reduced, and highly accurate monitoring is possible.

[0037] (28) The step of obtaining the captured image may use a camera installed in a position where the sun is not included in the captured image. In this case, the camera is installed in a position where the sun is not included in the captured image, thereby suppressing the influence on the captured image and enabling highly accurate monitoring.

[0038] (29) The step of obtaining the captured image may use a movably mounted camera. This allows the camera to be installed in an appropriate position to capture images, enabling highly accurate monitoring.

[0039] (30) The step of obtaining the captured image may use a thermal camera. This allows for highly accurate monitoring, even at night.

[0040] (31) The method may further include a step of receiving a setting input for the danger zone. In this case, the danger zone is set by the setting input by the monitor, so that the setting can be made according to the monitor's intention, and highly accurate monitoring is possible.

[0041] (32) The step of outputting the warning information may include a step of outputting the warning information by at least one of light, sound, and vibration based on the detection result. In this way, the warning information is output by at least one of light, sound, and vibration, so that it is possible to call the worker's attention to the work and enable highly accurate monitoring.

[0042] (33) The step of setting the danger zone includes: extracting a cross arm of the pylon from the captured image; and setting a predetermined range as a danger zone based on the extracted tip positions of the cross arm of the steel tower. In this way, the predetermined range is set as the danger zone based on the tip positions of the cross arm, which makes it possible to perform highly accurate monitoring while making the setting work efficient.

[0043] (34) In the step of setting the danger zone, the size of the predetermined zone may be changed based on the magnitude of the voltage supplied to the live line. In this way, the size of the predetermined zone is changed based on the magnitude of the voltage supplied to the live line, so that the danger zone can be set according to the equipment status of the tower, enabling highly accurate monitoring.

[0044] (35) The step of setting the danger zone includes a step of setting first and second danger zones having different danger levels, The detecting step detects whether the worker has entered the first or second hazardous area that has been set, The step of outputting the warning information may include a step of outputting first warning information or second warning information based on the detection result of the first danger zone or the second danger zone. This makes it possible to output the first warning information or second warning information according to the danger level, thereby enabling highly accurate monitoring by calling the worker's attention to their work in a manner that matches the danger level.

[0045] (36) A tower work monitoring system for monitoring whether a worker working on a non-current carrying electric wire in a tower having a first cross arm supporting a live electric wire carrying a current and a second cross arm supporting a non-current carrying electric wire is approaching the live electric wire, the system comprising: an imaging unit that captures images of the first cross arm and the second cross arm of the steel tower, the live wire, and the electric wire through which no current is flowing, to obtain a captured image; a setting unit that sets a danger zone within the captured image captured by the imaging unit; a recognition unit that recognizes the worker when the worker is present in the captured image; a detection unit that detects whether the worker has entered the danger zone; and a warning unit that outputs warning information based on the detection result of the detection unit. According to the present disclosure, it is possible to check in advance whether the system can correctly recognize a worker working on an electric wire that is not carrying current, thereby enabling highly accurate worker monitoring.

[0046] (37) The imaging unit is installed at a position lower than the height position of the cross arm of the steel tower, The imaging unit may be installed so as to capture images of the first and second arms located above the horizontal direction. In this case, the imaging unit captures images of the upper arms from a position lower than the height of the first and second arms, thereby reducing the possibility of people other than the worker entering the captured image and enabling highly accurate monitoring.

[0047] (38) The imaging unit may be installed to capture an image of the first and second arms such that the first arm is spaced apart from the second arm. This prevents the first and second arms from being captured in an overlapping manner, making it possible to reliably monitor the approach of a worker and achieve highly accurate monitoring.

[0048] (39) A tower work monitoring method for monitoring whether a worker working on a tower on which a live wire through which current is flowing is approaching the live wire, comprising: A step of capturing an image of the steel tower to obtain a captured image; setting a danger zone within the captured image; If the worker is present in the captured image, recognizing the worker; detecting whether the worker has entered the danger zone; and outputting warning information based on the detection result.

[0049] [Details of the embodiments of the present disclosure] [Embodiment 1] [Overall configuration] Figure 1 is a diagram illustrating the overall configuration of a tower work monitoring system 1 according to embodiment 1. Referring to Figure 1(A), the tower work monitoring system 1 monitors workers performing work on a tower 100 or the like. As an example, a case is shown in which a worker P is working on the tower 100. Also, as an example, a case is shown in which a supervisor Q who monitors the work of worker P separately from worker P is monitoring on the side of the monitoring device 30.

[0050] The steel tower 100 comprises pillars 101 extending upward and legs 102 supporting the pillars 101. The structure formed by the pillars 101 is provided with left and right cross arms 103A, 103B that support power transmission lines (not shown). The power transmission lines are attached to the tip positions of the cross arms 103A, 103B. As an example, the steel tower 100 is shown with three tiers of left cross arms 103A and right cross arms 103B attached at different positions.

[0051] The tower work monitoring system 1 used during maintenance and inspection of the tower 100 includes a camera 20 and a monitoring device 30 connected by wire to the camera 20. As an example, a case where the camera 20 and the monitoring device 30 are connected by wire will be described, but this configuration is not limited to this, and they may also be connected wirelessly via a network.

[0052] The camera 20 is set at a position in front of the steel tower 100 where the left and right cross arms 103A, 103B of the steel tower 100 are captured. The camera 20 need not necessarily be located in front of the steel tower 100 as long as the left and right cross arms 103A, 103B of the steel tower 100 do not overlap in the captured image. The camera 20 is set at a position lower than the height positions of the cross arms 103A, 103B of the steel tower 100. The camera 20 may be installed so as to capture images of the cross arms 103A and 103B such that the cross arm 103A is spaced apart from the cross arm 103B.

[0053] Referring to FIG. 1(B), a side view of the tower operation monitoring system 1 according to the first embodiment is shown. The camera 20 is installed so as to capture images of the cross arms 103A, 103B located above the horizontal. The camera 20 captures images of the cross arms 103A, 103B from a position lower than the height of the cross arms 103A, 103B, thereby reducing the possibility of people other than the worker appearing in the captured image. This reduces the risk of erroneous recognition and enables highly accurate monitoring. The camera 20 is installed in a position where the sun is not included in the captured image. By preventing the sun from being included in the captured image, the influence of the sun on the captured image is reduced, enabling highly accurate monitoring. The camera 20 is installed in a movable position. Using a movable camera instead of a fixed camera allows the camera to be installed in an appropriate position according to the surrounding environment and capture images, enabling highly accurate monitoring. Note that a thermal camera may be used as an example of the camera 20. Using a thermal camera enables nighttime capture, enabling highly accurate monitoring while also supporting nighttime work.

[0054] The tower work monitoring system 1 in this example monitors whether a worker working on a dead electric wire in a tower where both live electric wires with a current flowing and live electric wires with no current flowing are approaching the live wires. More specifically, the tower work monitoring system 1 in this example monitors whether a worker working on a dead electric wire in a tower where both live electric wires with a current flowing and live electric wires with no current flowing because the current has been temporarily stopped are approaching the live wires. The tower work monitoring system 1 outputs warning information when it determines that the worker is approaching a live wire.

[0055] In this example, a case where one worker and one supervisor are provided will be described, but a configuration in which a plurality of workers and a plurality of supervisors are provided may also be used.

[0056] FIG. 2 is a diagram illustrating a monitoring device 30 according to the first embodiment and various external devices connected to the monitoring device 30. Referring to FIG. 2, the monitoring device 30 is connected to, as an example, a camera 20 (imaging unit), a speaker 22, a display 24 (display unit), a mouse 26 (setting input unit), a light-emitting device 27, and a communication terminal 28 as external devices. Note that in this example, these external devices may not be provided. Alternatively, the monitoring device 30 may be configured to include the camera 20, the speaker 22, the display 24, etc. as part of the monitoring device 30. The camera 20 captures an image of the pylon 100 and acquires the captured image. The speaker 22 outputs audio information in accordance with instructions from the monitoring device 30. The display 24 is display means that displays information in accordance with instructions from the monitoring device 30. The mouse 26 is a pointing device used by the monitor to operate the monitoring device 30. While the mouse 26 is described as an example, an input interface such as a keyboard or a touch panel may also be used. The light-emitting device 27 is a device that emits light in accordance with instructions from the monitoring device 30. The communication terminal 28 is a terminal that is provided so as to be able to communicate with the monitoring device 30. The communication terminal 28 may be carried by the worker or the monitor, or a configuration may be provided in which multiple communication terminals are provided. For example, an intercom may be used as the multiple communication terminals so that the worker and the monitor can talk to each other.

[0057] The monitoring device 30 is mainly composed of a CPU (Central Processing Unit), storage devices such as ROM (Read Only Memory) and RAM (Random Access Memory), and a communication interface for connecting to communication terminals and the like. The CPU realizes various functional blocks by reading programs stored in the storage device. The monitoring device 30 includes a setting unit 10, a recognition unit 12, a worker slot generation unit 13, a detection unit 14, and a warning unit 16.

[0058] The setting unit 10 sets a danger area within the captured image captured by the camera 20. Specifically, the observer uses the mouse 26 to set the danger area within the captured image.

[0059] The recognition unit 12 recognizes a worker when the worker is present in the captured image. When the recognition unit 12 recognizes a worker, it displays a worker recognition display on the display 24 indicating that the worker has been recognized. Specifically, the recognition unit 12 displays an "H" mark 502 indicating the presence of a worker on the display 24 as the worker recognition display. This allows the supervisor Q to easily recognize the presence of a worker in the captured image. In other words, the supervisor Q can easily monitor whether the worker is working on the pylon. Furthermore, the "H" mark 502 is displayed adjacent to the worker frame. By displaying the "H" mark 502 adjacent to the worker frame, it is possible to easily identify that the display is intended for the worker. Since the "H" mark 502 is displayed following the worker frame, it is possible to easily identify the position of the worker.

[0060] When the recognition unit 12 recognizes a worker, the worker frame generation unit 13 generates a worker frame surrounding the worker according to the worker's position as a worker recognition display. The display 24 displays the worker frame generated by the worker frame generation unit 13. This allows the supervisor Q to easily recognize the worker's position in the captured image. For example, the worker frame generation unit 13 generates a worker frame as a worker recognition display by surrounding the worker with a rectangle according to the worker's position. The shape of the worker frame can be changed as appropriate. For example, an elliptical shape may be used as the worker frame. The worker frame generation unit 13 may generate a worker frame as a worker recognition display that changes depending on the range in which the worker is located. For example, the worker frame generation unit 13 may recognize the outline of the worker and generate a worker frame in a shape that matches the outline of the worker. The size of the worker frame can be adjusted as appropriate depending on the monitoring situation of the tower work. For example, the size of the worker frame may be enlarged when the monitoring level is high.

[0061] The detection unit 14 detects whether or not a worker has entered a danger zone. As an example, the detection unit 14 detects whether or not a worker has entered a danger zone based on whether or not the set danger zone and the zone of the worker slot generated by the worker slot generation unit 13 overlap.

[0062] The warning unit 16 outputs warning information based on the detection result of the detection unit 14. When the detection result of the detection unit 14 shows that the worker has not entered the danger zone, the warning unit 16 displays on the display 24 a “normal” icon 500 (first display) indicating a normal state in which the worker has not entered the danger zone. When the detection result of the detection unit 14 shows that the worker has entered the danger zone, the warning unit 16 displays on the display 24 an “abnormal” icon 501 (second display) indicating an abnormal state in which the worker has entered the danger zone. The warning unit 16 changes the color of the danger zone as warning information based on the detection result of the detection unit 14. Specifically, when the detection result of the detection unit 14 shows that the worker has not entered the danger zone, the warning unit 16 sets the danger zone to blue (first color). When the detection result of the detection unit 14 shows that the worker has entered the danger zone, the warning unit 16 sets the danger zone to red (second color). Changing the color of the danger zone allows the supervisor Q to easily recognize that the worker has entered the danger zone. The color of the danger zone can be changed to any color.

[0063] The warning unit 16 instructs the light emitting device 27 to output warning information by light as a detection result of the detection unit 14. As an example, the light emitting device 27 may output warning information by strobe light. The light output method of the light emitting device 27 is not limited, and a rotating light or various other methods may be used. Furthermore, the light emitting device 27 may output warning information by changing the color output.

[0064] The warning unit 16 instructs the speaker 22 to output warning information by sound as a detection result of the detection unit 14. As an example, the warning information may be output by a warning sound such as a siren from the speaker 22. There is no limitation on the type of sound, and the warning information may be a horn sound or a voice sound.

[0065] The warning unit 16 outputs warning information by vibration to a communication terminal 28 with a vibration function carried by the worker or supervisor as a result of detection by the detection unit 14. The vibration method is not limited, and any method appropriate for calling attention can be adopted as appropriate. If the communication terminal 28 is equipped with a speaker, light-emitting device, or display, the warning information may be output using these devices.

[0066] In this example, the warning unit 16 will be described as outputting warning information using multiple devices (speaker, display, light-emitting device, communication terminal, etc.), but this is not limited to this and other devices may be used, or warning information may be output using at least one device, or warning information may be output by appropriately combining any devices depending on the situation.

[0067] [Work Overview] Worker P's stringing work (repair work) on the pylon is performed with the power to the transmission line cut off. For example, in the case of a pylon with power lines on the left and right, the power supply to one of the left and right transmission lines is maintained while the power to the other of the left and right transmission lines is cut off. Worker P works on a wire that is not carrying current, rather than on a live wire through which current is flowing. In this example, we will explain a case where current is flowing in the left transmission line of the left and right transmission lines of pylon 100, and no current is flowing in the right transmission line. Worker P performs maintenance work, etc. on the right transmission line through which no current is flowing. However, if the worker approaches the left transmission line for some reason, there is a risk of electric shock, so supervisor Q needs to monitor the situation.

[0068] [Monitoring screen] Fig. 3 is a diagram illustrating an example of a monitoring screen 402 of the display 24 according to the embodiment 1. Referring to Fig. 3, a captured image of the steel tower 100 captured by the camera 20 is displayed on the monitoring screen 402 of the display 24.

[0069] The observer Q uses the monitoring screen 402 of the display 24 to set a danger zone that will become dangerous if the observer approaches the power transmission line. Specifically, the observer Q uses the mouse 26 to specify the danger zone within the captured image displayed on the monitoring screen 402. For example, the observer Q can specify a danger zone AR1 that will be a safe distance away by specifying the positions of its four corners using the mouse 26, taking into account the approach limit distance corresponding to the voltage of the power transmission line. The same applies to the other danger zones AR2 and AR3. The setting unit 10 sets the danger zones AR1 to AR3, for example, in accordance with the operation instructions of the observer Q using the mouse 26. The set danger zones AR1 to AR3 are displayed on the monitoring screen 402 of the display 24. The display of the danger zones allows the observer Q to check on the display 24 whether the danger zones have been set to appropriate ranges. The observer Q can also use the mouse 26 to arbitrarily change the size and position of the danger zone. This allows for appropriate adjustments to be made according to the monitoring situation of the tower work.

[0070] The detection unit 14 detects whether or not a worker has entered at least one of the danger areas AR1 to AR3. In this example, a case is shown in which the worker P is not present in the captured image.

[0071] The warning unit 16 outputs warning information based on the detection result of the detection unit 14. In this example, the detection unit 14 detects that no worker has entered any of the danger zones AR1 to AR3. Therefore, the monitoring screen 402 displays a "normal" icon 500, which indicates a normal state in which no worker has entered any of the danger zones. In addition, the danger zones AR1 to AR3 are colored blue. The monitor Q can easily recognize from this display that no abnormal state exists.

[0072] Fig. 4 is a diagram illustrating an example of another monitoring screen 404 of the display 24 according to the first embodiment. Referring to Fig. 4, the monitoring screen 404 of the display 24 displays a captured image of the steel tower 100 captured by the camera 20. In this example, a case is shown in which a worker P is displayed within the captured image. The monitoring screen 404 also displays danger areas AR1 to AR3.

[0073] The recognition unit 12 recognizes the presence of the worker P in the captured image. The recognition unit 12 displays an “H” mark 502 on the display 24.

[0074] When the recognition unit 12 recognizes a worker, the worker frame generation unit 13 generates a worker frame as a worker recognition display by surrounding the worker P according to the position of the worker P. The display 24 displays the worker frame 600 generated by the worker frame generation unit 13. In this example, the detection unit 14 detects that the worker has not entered any of the danger areas AR1 to AR3. Therefore, an "H" mark 502 is displayed on the monitoring screen 404 together with a "normal" icon 500. In this example, the "H" mark 502 is displayed adjacent to the worker frame. The "H" mark 502 may be displayed adjacent to the worker frame within the worker frame, or may be displayed adjacent to the worker frame outside the worker frame. The danger areas AR1 to AR3 are colored blue. The display allows the supervisor Q to easily recognize that the worker is present but is performing the work normally.

[0075] FIG. 5 is a diagram illustrating an example of another monitoring screen 406 of the display 24 according to the first embodiment. Referring to FIG. 5, compared to the monitoring screen 404 of FIG. 4, a worker frame 602 is displayed instead of the worker frame 600. The worker frame 602 is a worker frame that recognizes the outline of the worker and is shaped to fit the outline of the worker. Because the outline of the worker is recognized and displayed, it is possible to respond to changes in the worker's posture. For example, when a worker stretches out his / her hand, a worker frame that fits the posture is formed, making it possible to appropriately recognize danger.

[0076] Fig. 6 is a diagram illustrating an example of another monitoring screen 408 on the display 24 according to the first embodiment. Referring to Fig. 6, compared to the monitoring screen 406 of Fig. 5, it differs in that the worker P has entered the danger area AR1.

[0077] The detection unit 14 detects whether or not a worker has entered at least one of the danger areas AR1 to AR3. In this example, the detection unit 14 detects that the worker P has entered the danger area AR1. Specifically, the detection unit 14 detects that the danger area AR1 and the worker frame 602 overlap.

[0078] The warning unit 16 outputs warning information based on the detection result of the detection unit 14. When the detection result of the detection unit 14 indicates that a worker has entered a danger zone, the warning unit 16 displays an "abnormal" icon 501 (second display) on the display 24, indicating an abnormal state in which the worker has entered the danger zone. When the detection result of the detection unit 14 indicates that a worker has entered the danger zone, the warning unit 16 sets the danger zone to red (second color). The display enables the observer Q to easily recognize that the worker has entered the danger zone.

[0079] [Monitoring process flow] 7 is a diagram illustrating a monitoring process flow of the monitoring device 30 according to the first embodiment. Referring to Fig. 7, the monitoring device 30 acquires a captured image (step S2). Specifically, the camera 20 captures an image of the steel tower 100 to acquire the captured image.

[0080] Next, the monitoring device 30 sets a danger area (step S4). Specifically, the setting unit 10 sets the danger area in the captured image specified using the mouse 26. As an example, the monitor Q sets the danger area by specifying the positions of the four corners of the danger area in the captured image displayed on the monitoring screen using the mouse 26.

[0081] Next, the monitoring device 30 recognizes the worker (step S6). Specifically, the recognition unit 12 recognizes the worker if the worker is present in the captured image. When the recognition unit 12 recognizes the worker, it displays a worker recognition display on the display 24 indicating that the worker has been recognized. As an example, the recognition unit 12 displays an "H" mark 502 on the display 24. When the recognition unit 12 recognizes a worker, the worker frame generation unit 13 generates a worker frame that surrounds the worker according to the worker's position as the worker recognition display. The display 24 displays the worker frame generated by the worker frame generation unit 13. On the display 24, the "H" mark, which is the worker recognition display, is displayed adjacent to the worker frame.

[0082] Next, the monitoring device 30 detects whether or not the worker has entered the danger zone (step S8). Specifically, the detection unit 14 detects whether or not the worker has entered the set danger zone. The detection unit 14 detects whether or not the worker has entered the danger zone based on whether or not the danger zone set by the setting unit 10 overlaps with the range of the worker slot generated by the worker slot generation unit 13.

[0083] Next, in step S8, if the monitoring device 30 detects that the worker has entered the danger zone (YES in step S8), it outputs warning information (step S10). Specifically, the warning unit 16 outputs warning information based on the detection result of the detection unit 14. In this regard, if the danger zone and the range of the worker frame do not overlap as a detection result of the detection unit 14, the warning unit 16 determines that the worker has not entered the danger zone, and displays a "normal" icon 500 (first display) on the display 24, indicating a normal state in which the worker has not entered the danger zone. If the danger zone and the range of the worker frame overlap as a detection result of the detection unit 14, the warning unit 16 determines that the worker has entered the danger zone, and displays an "abnormal" icon 501 (second display) on the display 24, indicating an abnormal state in which the worker has entered the danger zone. If the detection result of the detection unit 14 shows that the worker has not entered the danger zone, the warning unit 16 sets the danger zone to blue (first color). When the detection result of the detection unit 14 indicates that a worker has entered the danger zone, the warning unit 16 sets the danger zone to red (second color). The warning unit 16 instructs the light emitting device 27 to output warning information by light as the detection result of the detection unit 14. The warning unit 16 instructs the speaker 22 to output warning information by sound as the detection result of the detection unit 14. The warning unit 16 instructs the communication terminal 28 to output warning information by vibration as the detection result of the detection unit 14.

[0084] On the other hand, if monitoring device 30 does not detect in step S8 that the worker has entered the danger zone (NO in step S8), it skips step S10 and proceeds to step S12.

[0085] In step S12, the monitoring device 30 determines whether the monitoring process has ended. If the monitoring device 30 determines that the monitoring process has ended (YES in step S12), it ends the process (END). For example, the monitoring device 30 may determine that the monitoring process has ended when the power is turned off.

[0086] On the other hand, in step S12, if the monitoring device 30 determines that the monitoring process has not ended (NO in step S12), the process returns to step S2 and the above process is repeated.

[0087] This processing enables the tower work monitoring system 1 to monitor workers with high accuracy. [Embodiment 2] Fig. 8 is a diagram illustrating monitoring device 30# according to embodiment 2 and various external devices connected to monitoring device 30#. Referring to Fig. 8, monitoring device 30# differs from monitoring device 30 of Fig. 2 in that setting unit 10 is replaced with setting unit 10#. The rest of the configuration is the same as that described in Fig. 2, and therefore detailed description thereof will not be repeated.

[0088] Setting unit 10# differs from setting unit 10 in that it includes extraction unit 11 and range setting unit 15. Extraction unit 11 extracts the cross arm of the steel tower in the captured image. Specifically, extraction unit 11 recognizes the shape of the cross arm of the steel tower in the captured image by image analysis, and extracts the area of ​​the cross arm based on the recognition result. Range setting unit 15 sets a predetermined range as a danger area based on the tip position of the cross arm of the steel tower extracted by extraction unit 11. Specifically, range setting unit 15 identifies the tip position portion of the extracted area of ​​the cross arm, and sets a predetermined range as a danger area based on the identified tip position.

[0089] Fig. 9 is a diagram illustrating an example of a monitoring screen 410 of the display 24 according to the embodiment 2. Referring to Fig. 9, a captured image of the steel tower 100 captured by the camera 20 is displayed on the monitoring screen 410 of the display 24.

[0090] The setting unit 10# sets a danger area within the captured image displayed on the monitoring screen 410. Specifically, the extraction unit 11 extracts the cross arm of the steel tower within the captured image. The extraction unit 11 extracts the area of ​​the cross arm of the steel tower through image analysis of the captured image. Next, the range setting unit 15 identifies the tip position of the area of ​​the cross arm of the steel tower extracted by the extraction unit 11 and sets a predetermined range as the danger area based on the identified tip position. As an example, the range setting unit 15 sets danger areas AR1# to AR3# as a predetermined rectangular range with the tip position of the cross arm of the steel tower extracted by the extraction unit 11 as the base point. The example shows a case where the danger areas AR1# to AR3# set by the range setting unit 15 are displayed on the display 24. It is assumed that the range setting unit 15 is given information in advance as to which side of the cross arm the danger area should be set on. The range setting unit 15 acquires information to set the danger area on the left side. The observer Q may instruct the range setting unit 15 about this information, or the range setting unit 15 may set the range using an externally provided sensor that detects voltage and current. For example, the range setting unit 15 may determine that current is flowing in the electric wire attached to the left arm based on the detection result of the sensor, and set a danger range on the left side.

[0091] Although the range setting unit 15 has been described as setting a predetermined rectangular danger zone, it may be circular or have another shape. The range setting unit 15 may change the size of the predetermined zone based on the magnitude of the voltage supplied to the electric wire. By changing the size of the danger zone based on the magnitude of the voltage, it is possible to set a danger zone that matches the equipment status of the pylon. The range setting unit 15 may be given information about the voltage in advance, or may use the detection results of a sensor.

[0092] This process makes it possible to automatically set the danger zone without any operational instructions from the observer Q, enabling highly accurate monitoring.

[0093] [Embodiment 3] In the above-described first and second embodiments, the setting unit 10 sets a danger zone, and the detection unit 14 detects whether or not a worker has entered the danger zone.

[0094] In the third embodiment, a case will be described in which the setting unit 10 sets a plurality of danger zones with different degrees of danger.

[0095] Fig. 10 is a diagram illustrating the setting of a danger area by the setting unit 10 according to the third embodiment. Referring to Fig. 10, the setting unit 10 sets a danger area ARA and a danger area ARB inside the danger area ARA. The danger area ARB is an area with a higher degree of danger than the danger area ARA. The danger area may be set by the observer Q specifying the danger area using the mouse 26 as described in the first embodiment, or may be set by extracting the cross arm of the pylon and automatically setting a predetermined danger area based on the tip position of the cross arm as described in the second embodiment.

[0096] The detection unit 14 detects whether the worker has entered the danger area ARA or the danger area ARB inside the danger area ARA.

[0097] The warning unit 16 outputs warning information based on the detection result of the detection unit 14. Specifically, when a worker enters the danger area ARA, the warning unit 16 outputs a warning sound (first warning information) at a first volume from the speaker 22. When a worker enters the danger area ARB, the warning unit 16 outputs a warning sound (second warning information) at a second volume higher than the first volume from the speaker 22. By changing the warning information according to the danger level, it is possible to alert the worker to the work in a manner suited to the danger level, thereby enabling highly accurate monitoring. In this example, the warning unit 16 outputs a warning sound at a first volume from the speaker 22 when a worker enters the danger area ARA, and outputs a warning sound at a second volume from the speaker 22 when a worker enters the danger area ARB. However, the warning information may be output in another manner. For example, the warning unit 16 may output light of a first brightness (first warning information) from the light-emitting device 27 when a worker enters the danger area ARA, and may output light of a second brightness (second warning information) brighter than the first brightness from the light-emitting device 27 when a worker enters the danger area ARB.

[0098] In this example, the setting unit 10 has been described as setting two danger zones according to the degree of danger, but it may also be configured to set multiple danger zones and output warning information corresponding to each of the multiple danger zones.

[0099] [Other forms] In this example, a case where there is one worker and one supervisor has been described, but the present invention is not limited to this and can also be applied to a case where there are a plurality of workers and a plurality of supervisors.

[0100] In this way, according to the embodiment, the supervisor can constantly monitor using the monitoring device 30 whether the workers are working safely on the tower.

[0101] Furthermore, in the above-described embodiment, the tower work monitoring system is mainly described as a tower work monitoring system that monitors whether a worker working on a non-current-carrying electric wire in a tower where both live electric wires carrying current and non-current-carrying electric wires are approaching the live wires, but the present invention is not limited to this. That is, it may also be a case where a worker working on a tower where only live electric wires carrying current are installed is monitored to see whether he is approaching the live wires.

[0102] The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present invention is defined by the claims rather than the above-described embodiments, and it is intended to include any modifications within the scope of the claims and meanings equivalent to the claims. [Explanation of symbols]

[0103] 1. Tower work monitoring system 10 Setting section 11 Extraction part 12 Recognition part 13 Worker slot generation unit 14 Detection unit 15 Range setting section 16 Warning part 20 Camera 22 Speaker 24 displays 26 Mouse 27 Light-emitting device 28 Communication terminals 30 Monitoring equipment 100 Steel Tower 101 Column section 102 Legs 103 A,103B arms.

Claims

1. A tower work monitoring system for monitoring whether a worker working on a non-current-carrying electric wire in a tower on which a current-carrying live wire and a non-current-carrying electric wire are installed is approaching the live wire, an imaging unit that captures an image of the steel tower and obtains a captured image; a setting unit that sets a danger zone within the captured image captured by the imaging unit; a recognition unit that recognizes the worker when the worker is present in the captured image; a detection unit that detects whether the worker has entered the danger zone; A tower work monitoring system comprising: a warning unit that outputs warning information based on the detection result of the detection unit.

2. The tower work monitoring system according to claim 1, further comprising a display unit that displays the captured image.

3. The tower work monitoring system according to claim 2 , wherein the display unit displays the danger zone set by the setting unit within the captured image.

4. The tower work monitoring system according to claim 2, wherein the display unit displays a worker recognition display indicating that the worker has been recognized when the recognition unit recognizes the worker.

5. the recognition unit recognizes the position of the worker when the worker is present in the captured image; The tower work monitoring system according to claim 4, wherein when the recognition unit recognizes the worker, the display unit displays a worker frame surrounding the worker according to the position of the worker as the worker recognition display.

6. the recognition unit recognizes an area in which the worker is located within the captured image, The tower work monitoring system according to claim 5, wherein when the recognition unit recognizes the worker, the display unit displays a worker frame as the worker recognition display that changes depending on the range in which the worker is located.

7. the display unit displays the danger area according to a first color, The tower work monitoring system according to claim 3, wherein the warning unit changes the danger area to a second color different from the first color as the warning information based on the detection result of the detection unit.

8. The warning unit When the worker does not enter the danger zone as a result of the detection by the detection unit, a first display is displayed on the display unit; 3. The tower work monitoring system according to claim 2, wherein when the worker enters the danger zone as a result of detection by the detection unit, a second display different from the first display is displayed on the display unit.

9. The imaging unit is installed at a position lower than the height position of the cross arm of the steel tower, The tower work monitoring system according to claim 1 , wherein the imaging unit is installed so as to capture an image of the cross arm located above the horizontal direction.

10. The tower work monitoring system according to claim 1 , wherein the imaging unit is installed at a position where the sun is not included in the captured image.

11. The tower work monitoring system according to claim 1 , wherein the imaging unit is movably provided.

12. The tower work monitoring system according to claim 1 , wherein the imaging unit is a thermal camera.

13. The tower work monitoring system according to claim 1 , further comprising a setting input unit that accepts setting input of the danger zone.

14. The tower work monitoring system according to claim 1 , wherein the warning unit outputs warning information by at least one of light, sound, and vibration based on the detection result of the detection unit.

15. A tower work monitoring system that monitors whether a worker working on a tower on which a live wire through which current is flowing is approaching the live wire, an imaging unit that captures an image of the steel tower and obtains a captured image; a setting unit that sets a danger zone within the captured image captured by the imaging unit; a recognition unit that recognizes the worker when the worker is present in the captured image; a detection unit that detects whether the worker has entered the danger zone; A tower work monitoring system comprising: a warning unit that outputs warning information based on the detection result of the detection unit.

16. A tower work monitoring method for a tower on which live wires carrying current and live wires carrying no current are installed, the method comprising the steps of: A step of capturing an image of the steel tower to obtain a captured image; setting a danger zone within the captured image; If the worker is present in the captured image, recognizing the worker; detecting whether the worker has entered the danger zone; and outputting warning information based on the detection result.

Images