JP2024048263A - Contact prevention support method, contact prevention support system, and contact prevention support device - Google Patents

Abstract

To make it possible to avoid a human error appropriately and efficiently realize accurate wire contact prevention.SOLUTION: An information processing device 100 receives a notification of detection of an electric field from an electroscope 200, which is provided on a construction machine 5 to detect an electric field in a predetermined voltage range within a predetermined detection distance, acquires sensing data at a timing of the notification from an object measurement unit 300 including a direction of the electroscope 200 in the sensing direction, identifies an electric wire 8 existing in the direction of the electroscope 200 and a separation distance from the electric wire 8 based on the sensing data, determines that the voltage in the electric wire 8 is within the voltage range, and executes predetermined operation according to the voltage range and the separation distance.SELECTED DRAWING: Figure 1

Description

The present invention relates to a contact prevention support method, a contact prevention support system, and a contact prevention support device that support the prevention of contact with electric wires, and more specifically, to a technology that appropriately avoids human error and enables efficient prevention of accurate contact with electric wires.

When using construction machinery such as cranes, pumping vehicles, aerial work platforms, and excavators, it is necessary to address the risk of contact with nearby electric wires. To date, the following standard measures have been implemented:
That is, (1) when working near power lines, protective tubes will be installed around the lines (request the power company to do the installation), (2) when working near extra-high voltage transmission lines, protective facilities and warning signs will be installed to prevent people from approaching the lines, and (3) dedicated monitors will be posted to maintain a safe distance from power lines.

Other measures that have been implemented include having workers on aerial work platforms wear live-line alarms that sound an alarm if the vehicle or worker approaches an electric line, and setting up laser barriers in areas where the crane is prohibited from turning, to detect objects that enter the barrier and sound an alarm.

As a conventional technique aimed at preventing contact with such electric wires, for example, an unmanned flying voltage detector (see Patent Document 1) has been proposed, which enables low-cost and rapid voltage detection of the target.

This technology relates to an unmanned flying voltage detector that includes an unmanned flying vehicle equipped with a control means for controlling flight by wireless control using a controller, and a voltage detector that is mounted on the unmanned flying vehicle and detects voltage on a test target, including a live part of a transmission tower, and transmits the voltage detection results wirelessly, and that, upon receiving the voltage detection results from the voltage detector, outputs the voltage detection results.

In addition, an information processing system that can assist in complying with work procedures when performing voltage detection (see Patent Document 2) has also been proposed.

This technology relates to an information processing system that includes a voltage detector and a terminal device configured to be able to communicate with the voltage detector, the voltage detector including a detection unit that detects the current flow state of an object to be voltage tested and an input unit that receives instructions to check the soundness of the voltage detector, the terminal device including a notification unit that notifies information about a series of tasks using the voltage detector, the notification unit notifying the worker of the task that should currently be performed among the series of tasks, and the series of tasks including the task of checking the soundness of the voltage detector using the input unit and the task of checking the current flow state of the object to be voltage tested using the detection unit.

JP 2017-135943 A JP 2019-144111 A

Although various conventional techniques exist as described above, the following problems still exist: For example, there remains a risk that a crane operator (hereinafter, abbreviated as OP) or a security guard may overlook the signs themselves.
Such risks could lead to electric shock accidents due to construction machinery coming into contact with electric wires. In addition, if the target is an extra-high voltage power line, there is a risk of electric shock accidents simply when construction machinery enters the safety clearance, even if there is no contact with the electric wire.

In addition, when using a laser barrier, various conditions differ depending on the work location where the barrier is to be installed, so even if it is within the same site, it is necessary to reconsider the installation location and power supply every time the work location is changed. Therefore, taking into account the effort and cost involved, in reality, it is difficult to adopt for small-scale work.

The present invention aims to provide technology that can appropriately avoid human error and efficiently prevent electrical wire contact.

The contact prevention support method of the present invention, which solves the above-mentioned problems, is characterized in that an information processing device executes the following processes: receiving notification of electric field detection from a voltage detector equipped on a construction machine and detecting an electric field due to a predetermined voltage range within a predetermined detection distance; acquiring sensing data at the timing of the notification from an object measuring unit whose sensing direction includes the direction of the voltage detector; identifying an electric wire present in the direction of the voltage detector and a distance away from the electric wire based on the sensing data; and determining that the voltage on the electric wire is within the voltage range, and executing a predetermined operation according to the voltage range and the distance away.
This means that even when sudden work is required near power lines where standard measures have not been taken, a voltage tester or object measuring unit can be easily installed on construction machinery, making it possible to implement and operate appropriate contact prevention measures.

Even for electric wires whose transmission voltage is unknown, the presence of a voltage detector that detects the electric field and an object measuring unit that measures the distance from the electric wire can ensure a safe distance, effectively reducing the risk of electric shock. This also applies to electric wires that are located in places that are prone to blind spots while working or moving around, leading to the avoidance of electric shock accidents over a wide area.

In other words, it is possible to appropriately avoid human error and efficiently prevent contact with power lines.

In the contact prevention support method of the present invention, the information processing device may execute, as the predetermined action, at least one of an action of issuing a predetermined alarm when the combination of the voltage range and the separation distance meets a first criterion, and an action of stopping the operation of the construction machine or moving it away from the electric wire when the combination of the voltage range and the separation distance meets a second criterion.

This makes it possible to prevent human error, such as forgetting to check the electric wire by on-site personnel, and to immediately and reliably prevent contact with the electric wire. As a result, it becomes possible to appropriately avoid human error and efficiently prevent contact with power lines more accurately.

In addition, in the contact prevention support method of the present invention, the information processing device, when processing to receive the notification, may receive the notification of the electric field detection from one of a plurality of voltage detectors equipped on the construction machine and having different voltage ranges or detection distances, and when processing to execute the predetermined operation, may determine that the voltage on the electric wire is within the voltage range of the voltage detector that issued the notification of the electric field detection, and execute the predetermined operation according to the voltage range and the separation distance.

This effectively expands the range of electric field detection, making it possible to detect electric wires with a wide range of voltages. This in turn makes it possible to appropriately avoid human error and efficiently prevent contact with power lines more accurately.

The contact prevention support system of the present invention is characterized by including an information processing device that includes a communication device that communicates with a voltage detector and an object measuring unit installed on a construction machine, a process for receiving notification of electric field detection from the voltage detector that detects an electric field due to a predetermined voltage range within a predetermined detection distance, a process for acquiring sensing data at the timing of the notification from the object measuring unit that includes the direction of the voltage detector in its sensing direction, a process for identifying an electric wire present in the direction of the voltage detector and a distance from the electric wire based on the sensing data, and a calculation device that executes a process for determining that the voltage on the electric wire is within the voltage range and executing a predetermined operation according to the voltage range and the distance.

This makes it possible to appropriately avoid human error and efficiently prevent contact with power lines.

In the contact prevention support system of the present invention, the arithmetic unit of the information processing device may execute, as the predetermined action, at least one of an action of issuing a predetermined alarm when the combination of the voltage range and the separation distance meets a first criterion, and an action of stopping the operation of the construction machine or moving it away from the electric wire when the combination of the voltage range and the separation distance meets a second criterion.

This makes it possible to prevent human error, such as forgetting to check the electric wire by on-site personnel, and to immediately and reliably prevent contact with the electric wire. As a result, it becomes possible to appropriately avoid human error and efficiently prevent contact with power lines more accurately.

In addition, in the contact prevention support system of the present invention, the arithmetic device of the information processing device, when processing to receive the notification, receives the notification of the electric field detection from one of a plurality of voltage detectors equipped on the construction machine and having different voltage ranges or detection distances, and when processing to execute the predetermined operation, determines that the voltage on the electric wire is within the voltage range of the voltage detector that issued the notification of the electric field detection, and executes the predetermined operation according to the voltage range and the separation distance.

This effectively expands the range of electric field detection, making it possible to detect electric wires with a wide range of voltages. This in turn makes it possible to appropriately avoid human error and efficiently prevent contact with power lines more accurately.

The contact prevention support device of the present invention is characterized by comprising a communication device that communicates with a voltage detector and an object measuring unit provided on a construction machine, a process for receiving notification of electric field detection from the voltage detector that detects an electric field due to a predetermined voltage range within a predetermined detection distance, a process for acquiring sensing data at the timing of the notification from the object measuring unit that includes the direction of the voltage detector in its sensing direction, a process for identifying an electric wire present in the direction of the voltage detector and a distance from the electric wire based on the sensing data, and a calculation device that executes a process for determining that the voltage on the electric wire is within the voltage range and executing a predetermined operation according to the voltage range and the distance.

This makes it possible to appropriately avoid human error and efficiently prevent contact with power lines.

The present invention makes it possible to appropriately avoid human error and efficiently prevent electrical wire contact.

1 is a conceptual diagram of a contact prevention support system according to an embodiment of the present invention. 1 is a diagram illustrating an example of a system configuration including a contact prevention assistance device according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a hardware configuration of a contact prevention assistance device according to the present embodiment. FIG. 4 is a diagram showing an example of the configuration of a voltage detector table in the present embodiment. FIG. 4 is a diagram showing an example of the configuration of an operation specification table in the present embodiment. FIG. 11 is a diagram showing an example of a flow of a contact prevention assistance method in the present embodiment. FIG. 11 is a diagram showing an example of output in this embodiment. FIG. 11 is a diagram showing an example of output in this embodiment.

<System Configuration>
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a diagram showing a conceptual example of a contact prevention support system 10 including a contact prevention support device 100 in this embodiment. Fig. 2 is a diagram showing an example of a system configuration including the contact prevention support device 100 in this embodiment.

The contact prevention support system 10 in this embodiment appropriately avoids human error and enables accurate and efficient prevention of electrical wire contact.

As already mentioned, the contact prevention support technology implemented in the conventional technology still leaves the risk that crane operators and security guards will overlook the signs themselves. Such a risk could lead to an electric shock accident when construction machinery or other equipment comes into contact with an electric wire. Furthermore, if the target is an extra-high voltage power line, there is a risk of an electric shock accident simply by construction machinery or other equipment entering the safety clearance, even if there is no contact with the electric wire.

In addition, when using a laser barrier, various conditions differ depending on the work location where the barrier is to be installed, so even if it is within the same site, it is necessary to reconsider the installation location and power supply every time the work location is changed. Therefore, taking into account the effort and cost involved, in reality, it is difficult to adopt for small-scale work.

On the other hand, the contact prevention support technology of the present invention makes it possible to appropriately avoid human error and efficiently prevent contact with electric wires.

As an embodiment of such a contact prevention support system 10, for example, a contact prevention support device 100 and its UI (User Interface) are placed in the control room 5A of a construction machine such as an aerial work vehicle 5, and a voltage detector 200 provided on a bucket 6 and an object measuring unit 300 provided on a boom base 7 are communicatively connected to this via a network 1 within the construction machine.

In this embodiment, the voltage detector 200 is a device that detects the electric field generated around the electric wires that mainly transmit high-voltage electricity, and performs appropriate output operations such as emitting light or making sounds.

The voltage detector 200 is a useful device with excellent and stable detection capabilities, but in many cases the detection range is limited (e.g., about 1 to 2 m), and it cannot be used to search for the location or direction of the electric field to be detected. For this reason, the present invention combines it with the object measuring unit 300 to work together and efficiently identify the presence of electric wires.

In this embodiment, the voltage detector 200 is equipped with a communication unit that detects the electric field present within the detection range 220 around itself, converts the output value of the detection result into a signal conforming to the protocol of the network 1, and notifies the contact prevention support device 100.

The object measuring unit 300 is located at the boom base 7 of the aerial work platform 5, and the measurement range 320 is set so that it overlooks the voltage detector 200 of the bucket 6 in front.

Examples of this object measurement unit 300 include a LiDAR scanner and a stereo camera. A LiDAR (Laser Imaging Detection And Ranging) scanner is a three-dimensional object measurement unit that emits laser light and measures the time it takes for the laser light to bounce back from an object at the target, thereby detecting the distance, direction, and even shape of the object.

On the other hand, a stereo camera is a sensing device that is composed of multiple cameras and can measure the size and distance of an object using images captured by each camera. The measurement range of a stereo camera is biased towards closer distances than a LiDAR scanner, but the introduction cost is cheaper than that of a LiDAR scanner.

In this embodiment, the LiDAR scanner described above is used, but of course a stereo camera may be used instead of or in addition to this. For example, it is possible to use a LiDAR scanner to observe objects that are relatively far from the construction machine, and a stereo camera to observe objects that are closer, or to increase accuracy by merging the observation results of the LiDAR scanner with those of the stereo camera for close-range areas of the range observed by the LiDAR scanner.

These various implementation forms for the construction machine 5 are merely examples, and the present invention may be applied and implemented in other construction machines that require prevention of contact with electric wires. The type of network 1 described above does not matter, but it is preferable for it to be appropriately secure.

In this embodiment, it is assumed that a construction business operator is the operator of the contact prevention support device 100 and automatically controls the construction machine 5 that he or she owns and operates based on data from the voltage detector 200 and the object measuring unit 300.

However, it is also possible to adopt a configuration in which the above-mentioned network 1 is an open network such as the Internet, and the contact prevention assistance device 100 acquires data from the voltage detectors 200 and object measuring units 300 of multiple construction machines 5 (regardless of whether they are made by the same company or another company), and performs integrated management of contact prevention assistance for those construction machines 5. In other words, the contact prevention assistance device 100 of the present invention is not limited to a configuration in which it can retain its main functions and information and function as a standalone machine.
<Hardware configuration example>
Next, a hardware configuration example of the contact prevention support device 100 will be described with reference to Fig. 3. As illustrated in Fig. 3, the information processing device constituting the contact prevention support device 100 of this embodiment is a general computer device, and includes a storage device 101, a memory 103, a calculation device 104, and a communication device 105.

The storage device 101 is composed of a non-volatile storage element such as a hard disk drive (HDD) or a solid state drive (SSD), and stores the program 102 and data required for processing, or the processing results.

The program 102 stored in the storage device 101 is a program for implementing the functions required for the contact prevention support device 100 of this embodiment. Therefore, the program 102 includes an object measurement program 1021 and an equipment control program 1022. However, the object measurement program 1021 and the equipment control program 1022 may be used each time by calling only the necessary functions from an external system via the network 1. In that case, it is not necessary to store these programs in the storage device 101 at all times.

The object measurement program 1021 is a program that analyzes data measured by the object measurement unit 300 in the measurement range 320 (e.g., the time it takes for the reflected light to return after the laser light is emitted by the LiDAR scanner, or the photographed data by the stereo camera) to determine the shape, position, size, and distance from the aircraft of objects that exist in the measurement range 320.

This object measurement program 1021 may be, for example, one provided by a LiDAR scanner or stereo camera vendor.

The equipment control program 1022 is a program that issues control commands to the control unit of the construction machine 5 via the network 1, and holds, for example, commands to stop the operation of the bucket or boom, and commands to instruct predetermined power line avoidance operations.

The storage device 101 also holds a voltage detector table 125 that stores information about the voltage detector 200 attached to the construction machine 5. The storage device 101 also holds an operation specification table 126 that specifies what control is to be performed on the construction machine 5 based on the data obtained from the voltage detector 200 and the object measuring unit 300. Details of these tables will be described later.

The memory 103 is also composed of a volatile memory element such as a RAM (Random Access Memory).

The calculation device 104 is a CPU (Central Processing Unit) that executes the program 102 stored in the storage device 101 by reading it into the memory 103, thereby controlling the device itself and performing various judgments, calculations, and control processes.

The communication device 105 is assumed to be an interface card or the like that handles communication processing with the voltage detector 200 and the object measuring unit 300 via the network 1. Of course, this is not necessary if the contact prevention support device 100 is integrated with the voltage detector 200 and the object measuring unit 300 as hardware and is configured and operated as a standalone machine.

The contact prevention support device 100 may also be equipped with an input device and an output device in case it receives operations from its administrator.

The input device is a device such as a keyboard, a microphone, a mouse, etc. that accepts key input or voice input from the administrator. The output device is a device such as a display or a speaker that displays data processed by the arithmetic unit 104.
<Table configuration>
Next, the tables stored in the storage device 101 of the contact prevention assistance device 100 will be described in detail with reference to FIGS.

Figure 4 is a diagram showing an example of the configuration of the voltage detector table 125 in this embodiment. The voltage detector table 125 in this embodiment is a table that manages information about the voltage detector 200 from which the contact prevention support device 100 receives notification of electric field detection.

This voltage detector table 125 is a collection of records in which a voltage detector ID that uniquely identifies the voltage detector 200 is used as a key to associate values such as the corresponding voltage range that is the detection range of the electric field of the voltage detector 200 and the detection distance.

When the contact prevention support device 100 manages multiple construction machines 5, it is preferable for the items in this voltage detector table 125 to further include identification information for the construction machine 5 on which the device is to be installed.

Each record in the above-mentioned voltage detector table 125, i.e., the information of each voltage detector 200, can be assumed to be based on the specification data of the voltage detector 200 provided by a voltage detector manufacturer, etc.

Figure 5 is a diagram showing an example of the configuration of the operation specification table 126 in this embodiment. The operation specification table 126 in this embodiment is a table that specifies, for each condition, the operation instructions that the contact prevention support device 100 will execute on the target construction machine 5 depending on the degree of proximity to nearby electric wires 5.

The action specification table 126 in this embodiment is a collection of records in which the values of the voltage range of the electric wire, the separation distance, and the corresponding action are associated with an action ID that uniquely identifies the action as a key.

Among these, the combination of the voltage range and separation distance of the electric wire is a condition for instructing an action. For example, when the voltage of the electric wire 8 that has been detected and the electric wire 8 is transmitting and distributing electricity is "6,600 V" and the separation distance from the electric wire 8 to the construction machine 5 (the bucket 6) is "3.0 m", the action that the contact prevention support device 100 instructs the construction machine 5 to take is to "issue an alarm", and similarly, when the separation distance from the electric wire 8 to the construction machine 5 (the bucket 6) is "2.0 m", the action that the contact prevention support device 100 instructs the construction machine 5 to take is to "stop".
<How to help prevent contact>
6 is a diagram showing an example of a flow of the contact prevention support method in this embodiment. Here, the process of the contact prevention support method in this embodiment will be described. Each process described here is basically executed by the contact prevention support device 100.

In this case, the contact prevention support device 100 receives a notification of electric field detection from the voltage detector 200 attached to the bucket 6 of the aerial work vehicle 5 (s10). At this time, the voltage detector 200 detects an electric field due to the electric wire 8 within its detection range 220. This detection range 220 is a circular area with a radius of, for example, about 2 m, centered on the voltage detector 200.

Next, the contact prevention support device 100 acquires the sensing data from the LiDAR scanner 300 located at the boom base 7 of the construction machine 5 (s11).

The LiDAR scanner 300 is set up to perform measurements by emitting laser light from the boom base 7 toward the bucket 6, i.e., the voltage detector 200.

The sensing data obtained here is therefore time data from the time when the LiDAR scanner 300 emits laser light in the direction of the voltage detector 200 to the time when the reflected light of the laser light is detected. Therefore, if an electric wire 8 is present in the vicinity of the voltage detector 200, this sensing data will include data on the reception time of the laser light reflected from the electric wire 8.

The contact prevention support device 100 inputs the sensing data obtained in s11 into the object measurement program 1021 to estimate the shape, size, and position of each object believed to be present within the measurement range 320 of the LiDAR scanner 300, and determines that, among such objects, for example, those located within the detection range 220 of the above-mentioned voltage detector 200 and having a cable-like shape are electric wires 8 (s12).

When making this determination, the contact prevention support device 100 determines the separation distance between the electric wire 8 and the electric detector 200 by subtracting the distance between the LiDAR scanner 300 and the electric detector 200 from the distance between the LiDAR scanner 300 and the electric wire 8.

The contact prevention support device 100 also determines that, for the electric wire 8 identified as described above, the specifications, i.e., the voltage range, of the voltage detector 200 that detected the electric wire 8 within the detection range 220 includes the voltage of the electricity being transmitted and distributed through the electric wire 8 (s13).

Therefore, the contact prevention support device 100 compares the voltage range of the electric wire 8 identified in s13 and the separation distance identified in s12 with the condition column of the operation specification table 126, and identifies the corresponding operation as "issuing an alarm" or "stopping" (s14).

At this time, the contact prevention support device 100 generates a control command corresponding to the identified operation using the equipment control program 1022, and notifies the control unit of the construction machine 5 of this command via the network 1, thereby causing the operation to be executed.

The execution of such actions as issuing warnings and stopping operations is carried out regardless of the judgment or instructions of the operator operating the construction machine 5, and is carried out without the operator being particularly aware of it. In other words, it is carried out in a way that prevents the occurrence of human error.

When automatically controlling the operation of the construction machine 5, the contact prevention support device 100 may display or output information explaining the current risk of electric shock and the details of the automatic control to be performed on an appropriate user interface of the construction machine 5, as shown on screen G10 in FIG. 7, for example.

Similarly, as shown in screen G20 of FIG. 8, the results of automatic control of the construction machine 5 and information indicating subsequent precautions may be displayed or output as audio on an appropriate user interface of the construction machine 5.

By providing this type of supplementary information output before and after automatic control, it is expected to be effective in terms of alerting and educating the operator of the construction machine 5.

It is also possible that multiple voltage detectors 200 with different voltage ranges and detection distances are installed on the construction machine 5. In that case, when the contact prevention support device 100 receives notification of an electric field detection in step s10 described above, it will determine which voltage detector 200 the notification came from based on the voltage detector ID included in the notification.

In addition, when estimating the voltage of the electric wire 8 in s13, the contact prevention support device 100 determines that the voltage of the electric wire 8 is within the voltage range defined by the specifications of the voltage detector 200 that issued the electric field detection notification.

For example, if the specifications of the voltage detector 200 that notified the electric field detection stipulate that the voltage range to be detected is "11,000 to 44,000 V," the voltage on the electric wire 8 that was the subject of the electric field detection can also be estimated to be "11,000 to 44,000 V."

Therefore, when the contact prevention support device 100 determines the necessary action using the action specification table 126, it determines the corresponding action and causes the construction machine 5 to execute it under the conditions that the voltage range is the above-mentioned "11,000 to 44,000 V" and the separation distance is the distance between the voltage detector 200 that notified the electric field detection and the electric wire 8.

The present invention has been specifically described based on the embodiment, but is not limited to this and can be modified in various ways without departing from the spirit of the invention.

1 Network 5 Aerial work vehicle (construction machinery)
6 Bucket 7 Boom base 8 Electric wire 10 Contact prevention support system 100 Contact prevention support device (information processing device)
REFERENCE SIGNS LIST 101 Storage device 102 Program 1021 Object measurement program 1022 Device control program 103 Memory 104 Calculation device 105 Communication device 125 Voltage detector table 126 Operation specification table 200 Voltage detector 220 Detection range 300 Object measurement unit 320 Measurement range

Claims (7)

An information processing device,
A process of receiving a notification of detection of an electric field from a voltage detector that is provided on the construction machine and detects an electric field caused by a predetermined voltage range within a predetermined detection distance;
A process of acquiring sensing data at the timing of the notification from an object measuring unit whose sensing direction includes the direction of the voltage detector;
A process of identifying an electric wire present in the direction of the voltage detector and a distance from the electric wire based on the sensing data;
determining that the voltage on the electric wire is within the voltage range and performing a predetermined action depending on the voltage range and the separation distance;
A contact prevention support method comprising the steps of: The information processing device,
The predetermined operation is
When a combination of the voltage range and the separation distance meets a first criterion, at least one of the following is executed: issuing a predetermined alarm; and when a combination of the voltage range and the separation distance meets a second criterion, stopping the operation of the construction machine or moving it away from the electric line.
The contact prevention support method according to claim 1 . The information processing device,
In the process of receiving the notification, a notification of the detection of the electric field is received from any one of a plurality of voltage detectors provided on the construction machine, the voltage ranges or the detection distances of which are different,
In the process of executing the predetermined operation, the voltage on the electric wire is determined to be within the voltage range of the voltage detector that issued the notification of the electric field detection, and a predetermined operation is executed according to the voltage range and the separation distance.
The contact prevention support method according to claim 1 . A communication device that communicates with a voltage detector and an object measuring unit provided on the construction machine;
a process for receiving notification of detection of an electric field from the electroscope, the electroscope detecting an electric field in a predetermined voltage range within a predetermined detection distance; a process for acquiring sensing data at the timing of the notification from the object measuring unit, the object measuring unit having a sensing direction including the direction of the electroscope, a process for identifying an electric wire present in the direction of the electroscope and a distance from the electric wire based on the sensing data; and a calculation device for executing a process for determining that the voltage at the electric wire is within the voltage range and executing a predetermined operation according to the voltage range and the distance.
A contact prevention support system including an information processing device. The arithmetic unit of the information processing device
The predetermined action is at least one of an action of issuing a predetermined alarm when a combination of the voltage range and the separation distance meets a first criterion, and an action of stopping the operation of the construction machine or moving it away from the electric line when a combination of the voltage range and the separation distance meets a second criterion.
5. The contact prevention support system according to claim 4. The arithmetic unit of the information processing device
In the process of receiving the notification, the notification of the electric field detection is received from one of a plurality of voltage detectors equipped on the construction machine, which have different voltage ranges or detection distances, and in the process of executing the predetermined operation, the voltage on the electric wire is determined to be within the voltage range of the voltage detector that issued the notification of the electric field detection, and a predetermined operation is executed according to the voltage range and the separation distance.
5. The contact prevention support system according to claim 4. A communication device that communicates with a voltage detector and an object measuring unit provided on the construction machine;
a process for receiving notification of detection of an electric field from the electroscope, the electroscope detecting an electric field in a predetermined voltage range within a predetermined detection distance; a process for acquiring sensing data at the timing of the notification from the object measuring unit, the object measuring unit having a sensing direction including the direction of the electroscope, a process for identifying an electric wire present in the direction of the electroscope and a distance from the electric wire based on the sensing data; and a calculation device for executing a process for determining that the voltage at the electric wire is within the voltage range and executing a predetermined operation according to the voltage range and the distance.
A contact prevention support device comprising:

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