Electric wire length calculation system and electric wire length calculation program

Abstract

To make it possible to appropriately and easily obtain a length of an electric wire necessary for connecting devices.SOLUTION: An electric wire length calculation system includes: a smartphone 2 that photographs a state in which a disconnector D including a first connection terminal D1 and a circuit breaker S including a second connection terminal S1 are installed; and a support computer 3 that acquires a distance between the first connection terminal D1 and the second connection terminal S1, an orientation of the first connection terminal D1, and an orientation of the second connection terminal S1 based on an image captured by the smartphone 2, and calculates a length of a lead wire K necessary for connecting the first connection terminal D1 and the second connection terminal S1 based on the acquired distance and orientation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire length calculation system and a wire length calculation program for calculating the required length of a wire. [Background technology]

[0002] For example, in a power generation / substation, it is necessary to connect a disconnector and a circuit breaker (see, for example, Patent Document 1), and when connecting via a lead wire, for example, a worker compresses and connects one end of the lead wire to the circuit breaker, and then holds the other end of the lead wire and passes it over to the disconnector to connect it to the disconnector. At this time, the worker climbs onto the disconnector to check the situation, determines the required length of the lead wire, and then cuts it. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-112125 Summary of the Invention [Problem to be solved by the invention]

[0004] The required length of the lead wire must be determined taking into account the distance between the disconnector and the circuit breaker, the orientation of the connection terminals between the disconnector and the circuit breaker, and the extra length required to avoid placing a load on the lead wire in the event of an earthquake. However, in the past, the required length of the lead wire was determined by the worker based on their knowledge and experience, which resulted in variations between workers and the risk of the lead wire being too short or too long. Moreover, workers had to climb onto the disconnector or other equipment to determine the required length of the lead wire and then cut it, which placed a heavy burden on the worker.

[0005] Therefore, an object of the present invention is to provide a wire length calculation system and a wire length calculation program that can accurately and easily obtain the length of the wire required to connect devices. [Means for solving the problem]

[0006] In order to solve the above problem, the invention of claim 1 is an electric wire length calculation system characterized by comprising: an imaging means for imaging a state in which a first device having a first connection terminal and a second device having a second connection terminal are installed; an image analysis means for acquiring the distance between the first connection terminal and the second connection terminal and the orientation of the first connection terminal and the orientation of the second connection terminal based on the image captured by the imaging means; and an electric wire length calculation means for calculating the length of the electric wire required to connect the first connection terminal and the second connection terminal based on the distance and the orientation acquired by the image analysis means.

[0007] The invention of claim 2 is characterized in that in the electric wire length calculation system of claim 1, the electric wire length calculation means calculates the required length of the electric wire based on an allowable bending radius of the electric wire.

[0008] The invention of claim 3 is characterized in that, in the electric wire length calculation system according to claim 1 or 2, the electric wire length calculation means calculates the required length of the electric wire by adding an extra length required for earthquake resistance to the calculated length of the electric wire.

[0009] The invention of claim 4 is a wire length calculation program that causes a computer to function as: an image analysis means that acquires the distance between the first connection terminal and the second connection terminal and the orientation of the first connection terminal and the orientation of the second connection terminal based on an image captured of a state in which a first device having a first connection terminal and a second device having a second connection terminal are installed; and a wire length calculation means that calculates the length of the wire required to connect the first connection terminal and the second connection terminal based on the distance and orientation acquired by the image analysis means. [Effects of the Invention]

[0010] According to the inventions of claims 1 and 4, the distance between the connection terminals and the orientation of each connection terminal are acquired based on an image of the first device and the second device installed, and the length of the electric wire required to connect the first connection terminal and the second connection terminal is automatically calculated. In this way, it is possible to appropriately and easily acquire the length of the electric wire required to connect the devices simply by taking an image of the first device and the second device installed.

[0011] According to the invention described in claim 2, the required length of the electric wire is calculated based on the allowable bending radius of the electric wire, so that it is possible to calculate and obtain the appropriate length of the electric wire so that the electric wire can be properly installed without causing load or damage to the electric wire.

[0012] According to the invention described in claim 3, the required length of the electric wire is calculated by adding the extra length required for earthquake resistance to the length of the electric wire calculated as described above, so that it is possible to calculate and obtain the appropriate length of the electric wire so as not to cause load or damage to the electric wire, etc., even in the event of an earthquake. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic configuration diagram showing an electric wire length calculation system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic block diagram showing the configuration of a support computer of the electric wire length calculation system of FIG. [Figure 3] 3 is a schematic diagram showing a lead wire arrangement prediction image generated by the support computer of FIG. 2. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be described below based on the illustrated embodiments.

[0015] FIG. 1 is a schematic diagram showing a wire length calculation system 1 according to an embodiment of the present invention. This wire length calculation system 1 is a system for calculating the length of a wire required to connect two devices. In this embodiment, a case where a disconnecting switch (first device) D and a circuit breaker (second device) S are connected by a lead wire (electric wire) K in a power generation / substation will be described, but the present invention can also be applied to cases where other devices are connected. Here, a first connection terminal D1 is provided on the disconnecting switch D via a first insulator D2, and a second connection terminal S1 is provided on the circuit breaker S via a second insulator S2.

[0016] The electric wire length calculation system 1 mainly comprises a smartphone (photographing means) 2 and a support computer 3, which are connected to each other so as to be able to communicate freely.

[0017] The smartphone 2 is a multi-function mobile phone equipped with a communication function, a display, a camera (photographing means), etc., and has the same configuration as existing, ready-made multi-function mobile phones, and is carried and used by a worker M who performs the work of connecting devices, a work supervisor, etc. In this embodiment, the smartphone 2 mainly functions as a photographing means for photographing the state in which the disconnector 1 and the circuit breaker S are installed (installation state), and transmits the photographed image (installation state image) to the support computer 3.

[0018] Here, the installation state image includes a front image of the installation state photographed from the front and a top image of the installation state photographed from above as shown in Fig. 1. The smartphone 2 also has a function of adjusting and changing the trajectory of the lead wire K in the expected installation image displayed on the display as described below, and of calculating and displaying the length of the lead wire K in the adjusted trajectory.

[0019] The support computer 3 is a computer that supports the connection work between devices, and is installed in a work management office, etc. As shown in Fig. 2, the support computer 3 mainly comprises an input unit 31, a display unit 32, a communication unit 33, an image analysis task (image analysis means) 34, an electric wire length calculation task (electric wire length calculation means) 35, and a central processing unit 36 ​​that controls these.

[0020] The input unit 31 is an interface for inputting various information and commands, and specifically, inputs the type and diameter of the lead wire K, which will be described later, and inputs a command to start an image analysis task 34. The display unit 32 is a display that displays various data and information, and specifically, displays an expected image of the lead wire K's layout generated as described later in the electric wire length calculation task 35. The communication unit 33 is an interface for communicating with the outside via the Internet network, a telephone communication network, etc., and specifically, receives an image of the installation state from the smartphone 2 and transmits the required length of the lead wire K, calculated as described later in the electric wire length calculation task 35, to the smartphone 2.

[0021] The image analysis task 34 is a task program that acquires (determines) the distance between the first connection terminal D1 of the disconnector D and the second connection terminal S1 of the circuit breaker S, and the orientation of the first connection terminal D1 and the orientation of the second connection terminal S1, based on an image (installation state image) of the installation state of the disconnector D and the circuit breaker S photographed by the smartphone 2. The image analysis task 34 is activated when an activation command is input via the input unit 31 with the installation state image designated, or when an installation state image is received from the smartphone 2.

[0022] First, the image of the installation state is analyzed to determine the distance (inter-terminal distance) between the opposing first connection terminal D1 and second connection terminal S1. At this time, the inter-terminal distance is determined, for example, using as a reference a component in the installation state image whose dimensions are known in advance (for example, components of the disconnector 1 or circuit breaker S, or a scale photographed together).

[0023] Next, the orientation of the first connection terminal D1 and the orientation of the second connection terminal S1 are calculated when a predetermined direction (for example, the direction of the installation surface of the disconnector 1 and circuit breaker S) is used as the reference. At this time, the orientation of each of the opposing first connection terminal D1 and second connection terminal S1, which are the targets for calculating the inter-terminal distance, is calculated. For example, using the direction of the installation surface (horizontal direction) as the reference, it is calculated that the orientation of the first connection terminal D1 is oriented 90 degrees upward and the orientation of the second connection terminal S1 is oriented 45 degrees diagonally upward to the left.

[0024] The inter-terminal distance and the orientation of the connection terminals D1, S1 are calculated three-dimensionally based on the front image and top image of the installation state. For example, the inter-terminal distance is calculated three-dimensionally based on the inter-terminal distance (horizontal and vertical distances) in the front image of the installation state photographed from the front and the inter-terminal distance (depth direction) in the top image of the installation state photographed from above. Similarly, the orientation of the connection terminals D1, S1 is calculated three-dimensionally based on the orientation of the connection terminals D1, S1 in the front image and the orientation of the connection terminals D1, S1 in the top image.

[0025] The wire length calculation task 35 is a task program that calculates the required length of the lead wire K for connecting the first connection terminal D1 and the second connection terminal S1 based on the inter-terminal distance and the orientation of the connection terminals D1, S1 acquired by the image analysis task 34. This wire length calculation task 35 is started following the start of the image analysis task 34.

[0026] First, a state (first arrangement state) in which the lead wire K is arranged is generated so that the lead wire K extends in the direction of the determined connection terminals D1, S1 and over the determined inter-terminal distance. Next, based on the allowable bending radius of the lead wire K, the first arrangement state is modified to generate a second arrangement state so that this allowable bending radius can be ensured. Here, if the type and diameter of the lead wire K are predetermined, the allowable bending radius is the allowable bending radius for that type and diameter. If they are not predetermined, the allowable bending radius is the allowable bending radius based on the type and diameter of the lead wire K input via input unit 31. Therefore, in this case, the allowable bending radius for each type and diameter of the lead wire K is stored in advance.

[0027] Next, the length (path length) of the lead wire K in the second installation state is calculated, and the required length of the lead wire K is calculated by adding the extra length required for seismic resistance to this length. In other words, the required length is calculated taking into account the extra length required for seismic resistance. Here, the extra length required for seismic resistance is an extra (play) length to prevent damage to the lead wire K, disconnector D, and circuit breaker S even when shaking occurs in an earthquake, and can be set at any value as long as it prevents damage. For example, it can be set to 5% of the span length, a fixed length (e.g., 70 mm), or 1.5 times (a pre-calculated value) the maximum top displacement when a predetermined resonant sine three-wave is applied to the disconnector D and circuit breaker S.

[0028] Next, a predicted layout image is generated showing the state and trajectory of the lead wire K of the required length connected between the connection terminals D1 and S1, as shown in Fig. 3. Then, this predicted layout image and the required length of the lead wire K are sent to the smartphone 2 that sent the installation state image.

[0029] Next, the operation and behavior of the electric wire length calculation system 1 configured as above will be described.

[0030] First, a worker M or the like takes an image of the installation state of the disconnector D and the circuit breaker S with the smartphone 2, and transmits the captured image of the installation state to the support computer 3. In response to this, the image analysis task 34 of the support computer 3 is started, and as described above, the inter-terminal distance between the disconnector D and the circuit breaker S, the orientation of the first connection terminal D1, and the orientation of the second connection terminal S1 are obtained. Next, the wire length calculation task 35 is started, and as described above, a predicted installation image showing the state in which the lead wire K is connected and the required length of the lead wire K are generated and calculated, and transmitted to the smartphone 2.

[0031] Then, worker M cuts lead wire K and performs the connection work while looking at the expected layout image and the required length of lead wire K displayed on smartphone 2. At this time, worker M can adjust or change the trajectory of lead wire K in the expected layout image displayed on the display of smartphone 2 by pointing with his / her finger, and the length of lead wire K at the adjusted trajectory is calculated and displayed.

[0032] As described above, according to this electric wire length calculation system 1, the distance between the connection terminals D1 and S1 and the orientation of each connection terminal D1 and S1 are acquired based on an installation state image captured of the state in which the disconnector D and the circuit breaker S are installed, and the length of the lead wire K required to connect the first connection terminal D1 and the second connection terminal S1 is automatically calculated. In this way, simply by capturing an image of the state in which the disconnector D and the circuit breaker S are installed, it is possible to appropriately and easily acquire the length of the lead wire K required to connect the devices D and S. Moreover, a predicted installation image showing the state in which the lead wire K is connected between the connection terminals D1 and S1 is transmitted to and displayed on the smartphone 2, allowing the worker M to easily and appropriately connect the lead wire K while viewing this predicted installation image.

[0033] In addition, since the required length of the lead wire K is calculated based on the allowable bending radius of the lead wire K, it is possible to calculate and obtain the appropriate length of the lead wire K so that the lead wire K can be properly arranged without applying load or damage to the lead wire K.

[0034] Furthermore, the required length of the lead wire K is calculated by adding the extra length required for earthquake resistance to the length of the lead wire K calculated as described above, so it is possible to calculate and obtain the appropriate length of the lead wire K so as not to cause load or damage to the lead wire K, etc., even if an earthquake occurs.

[0035] Although the embodiments of the present invention have been described in detail above, the specific configuration is not limited to these embodiments, and the present invention also includes design changes and the like that do not deviate from the gist of the present invention. For example, in the above embodiments, the inter-terminal distance and the orientation of the connection terminals D1, S1 are calculated three-dimensionally, but if there is no misalignment or tilt of the connection terminals D1, S1 in the depth direction relative to the front, they may be calculated two-dimensionally based only on the front image.

[0036] The above-described electric wire length calculation system 1 and support computer 3 may be configured by installing the following electric wire length calculation program in a general-purpose computer. That is, the electric wire length calculation program causes the computer to function as an image analysis means (image analysis task 34) that acquires the distance between a first connection terminal and a second connection terminal and the orientation of the first connection terminal and the orientation of the second connection terminal based on an image captured of a state in which a first device having a first connection terminal and a second device having a second connection terminal are installed, and an electric wire length calculation means (electric wire length calculation task 35) that calculates the length of an electric wire required to connect the first connection terminal and the second connection terminal based on the distance and orientation acquired by the image analysis means, and the electric wire length calculation means calculates the required length of the electric wire based on the allowable bending radius of the electric wire, and calculates the required length of the electric wire by adding an extra length required for earthquake resistance to the calculated electric wire length. [Explanation of symbols]

[0037] 1. Wire length calculation system 2. Smartphone (photography method) 3. Support Computer 34 Image analysis task (image analysis method) 35 Wire length calculation task (wire length calculation means) D. Disconnector (first device) D1 First connection terminal S Circuit breaker (secondary device) S1 Second connection terminal K Lead wire (electric wire) M worker

Claims

1. an imaging means for imaging a state in which a first device having a first connection terminal and a second device having a second connection terminal are installed; an image analysis means for acquiring a distance between the first connection terminal and the second connection terminal, and an orientation of the first connection terminal and an orientation of the second connection terminal based on an image captured by the imaging means; a wire length calculation means for calculating a length of a wire required to connect the first connection terminal and the second connection terminal based on the distance and the orientation acquired by the image analysis means; A wire length calculation system comprising:

2. the electric wire length calculation means calculates the required length of the electric wire based on the allowable bending radius of the electric wire.

2. The electric wire length calculation system according to claim 1 .

3. the electric wire length calculation means calculates the required electric wire length by adding an extra length required for earthquake resistance to the calculated electric wire length.

3. The electric wire length calculation system according to claim 1 or 2.

4. Computer, an image analysis means for acquiring a distance between the first connection terminal and the second connection terminal, and an orientation of the first connection terminal and an orientation of the second connection terminal, based on an image captured of a state in which a first device having a first connection terminal and a second device having a second connection terminal are installed; a wire length calculation means for calculating a length of a wire required to connect the first connection terminal and the second connection terminal based on the distance and the direction acquired by the image analysis means; A wire length calculation program characterized by functioning as follows.

Images