WO2014118879A1

WO2014118879A1 - Determination device, determination system and determination method

Info

Publication number: WO2014118879A1
Application number: PCT/JP2013/051865
Authority: WO
Inventors: 裕二杉江; 剛裕中村
Original assignee: 中国電力株式会社
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2014-08-07
Also published as: JP5778359B2; JPWO2014118879A1

Abstract

A determination device for determining the degree of deterioration of a metal wire laid outdoors, the determination device comprises: a wire heating unit for heating the surface of the wire at a first point on the wire; a temperature change measuring unit for measuring a change in the temperature of the wire at a second point at a prescribed distance away from the first point along the extension direction of the wire; and a deterioration degree determination unit for determining the degree of deterioration in the wire on the basis of the results of measuring the change in temperature.

Description

Determination device, determination system, and determination method

The present invention relates to a determination device, a determination system, and a determination method.

The electric pole is stretched with a metallic wire called an overhead ground wire for lightning protection. The overhead ground wire is stretched around the utility pole in an uncovered state with the metal wire exposed, and is directly affected by wind and rain and sea breezes.

For this reason, inspections are being systematically conducted to check the degree of deterioration of overhead ground wires installed in various places, and when rust or cracks are found to be deteriorated, measures such as repair or replacement are promptly performed. ing.

For example, Patent Document 1 discloses a technique for examining the degree of degradation of such an overhead ground wire.

JP 2007-288844 A

Such determination of the degree of deterioration of the overhead ground wire is made based on the subjectivity of the worker by visual inspection or the like. For this reason, the inspection results tend to vary.

For example, since overhead ground wires are often stretched at high places such as the upper part of utility poles, inspections of overhead ground wires are often performed from the ground using binoculars etc. It may be difficult for the worker to recognize the surface state of the overhead ground wire due to the brightness of the sky or the shaking of the overhead ground wire.

Also, as in Patent Document 1, when the degree of deterioration is inspected by scraping the surface of an overhead ground wire, the amount of collected rust may vary depending on the worker.

For this reason, there is a need for a technique that enables objective determination of the degree of deterioration of metal wires laid outdoors such as overhead ground wires.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to objectively determine the degree of deterioration of a metal wire laid outdoors.

A determination device according to one aspect is a determination device for determining a degree of deterioration of a metal wire laid outdoors, wherein the wire heating heats the surface of the wire at a first point on the wire. A temperature change measuring unit that measures a temperature change of the wire at a second point spaced from the first point by a predetermined interval along the direction of extension of the wire, and a measurement result of the temperature change, A deterioration degree determination unit for determining the degree of deterioration of the wire.

The other problems disclosed by the present application and the solutions thereof will be clarified by the description in the column of the embodiment for carrying out the invention and the description of the drawings.

It becomes possible to objectively determine the degree of deterioration of metal wires laid outdoors.

It is a figure which shows a mode that the degradation degree of an overhead ground wire is determined using a determination system. It is a figure which shows the example of an external appearance structure of a determination apparatus. It is a figure which shows the example of an external appearance structure of a determination apparatus. It is a figure which shows the example of an external appearance structure of a determination apparatus. It is a figure which shows a mode that a heater and a temperature sensor contact an overhead ground wire. It is a figure which shows the example of an external appearance structure of a work stick. It is a figure which shows a mode that a work stick is connected with the determination apparatus. It is a figure which shows the external appearance structural example of a remote control. It is a figure which shows the function structural example of a determination apparatus. It is a figure which shows a temperature recording table. It is a figure which shows a deterioration degree determination table. It is a figure which shows a deterioration degree determination table. It is a figure which shows the function structural example of a remote control. It is a flowchart which shows the flow of the process at the time of determining the deterioration degree of an overhead ground wire. It is a figure which shows the measurement process of a temperature change. It is a figure which shows the measurement process of a temperature change. It is sectional drawing of an imaginary ground wire. It is a figure which shows a mode that a heater and a temperature sensor contact an overhead ground wire.

At least the following matters will become clear from the description of this specification and the accompanying drawings.

As shown in FIG. 1, the determination apparatus 100 according to the present embodiment is connected to a work bar 200 to constitute a work bar-equipped determination apparatus 300. Further, the determination device 300 with a working bar constitutes a determination system 600 together with the remote control 400.

Hereinafter, with reference to FIG. 1 to FIG. 18, the determination system 600 according to the present embodiment is used as an example in which the determination system 600 is used to inspect the deterioration degree of the overhead ground wire 510 laid on the utility pole 500. The structure of the apparatus 100, the work stick 200, the work stick attached determination apparatus 300, the remote controller 400, and the method of determining the degree of deterioration will be described.

First, as shown in FIG. 1, the worker A 701 holds the work bar 200 of the determination apparatus 300 with a work bar, and brings the determination apparatus 100 coupled to the tip of the work bar 200 into contact with the overhead ground wire 510. . In this state, worker B 702 operates determination start button 432 of remote controller 400 shown in FIG.

Then, a determination start command for the degree of deterioration of the overhead ground wire 510 is transmitted from the remote control 400 to the determination device 100.

Upon receiving the determination start command, the determination device 100 uses the heater (wire heating unit) 131 and the temperature sensor (temperature change measurement unit) 132 mounted on the determination device 100 according to the procedure described later, and the overhead ground wire 510. Is heated for a predetermined heating time, and the temperature change of the overhead ground wire 510 is measured.

Then, the determination device 100 determines the degree of deterioration of the overhead ground wire 510 based on the measurement result of the temperature change of the overhead ground wire 510 and transmits the determination result to the remote controller 400.

The remote controller 400 outputs the determination result transmitted from the determination apparatus 100 to the output unit 420.

As described above, by using the determination system 600 according to the present embodiment, the determination result of the degree of deterioration of the overhead ground wire 510 is a measurement result of the temperature change of the overhead ground wire 510 without depending on the subjectivity of the worker A701 or the worker B702. Therefore, it is possible to objectively determine the degree of deterioration of the overhead ground wire 510.

1 to 5 and 7, the x-axis indicates the direction along the extension direction of the overhead ground wire 510, and the z-axis indicates the vertical direction. The y axis indicates a direction perpendicular to the x axis and the z axis.

In the following description, when it is not necessary to distinguish between the worker A 701 and the worker B 702, the worker A 701 is also simply referred to as the worker 700.

2 to 4 are diagrams showing an external configuration of the determination apparatus 100. FIG. As shown in FIGS. 2 to 4, the determination apparatus 100 according to the present embodiment includes a case 170, a power switch 133, a display lamp 121, a speaker 125, a work bar coupling unit 180, a heater 131, and a temperature sensor 132. It is configured. As shown in FIG. 9, the determination apparatus 100 includes functions of a communication unit 110, an output unit 120, a mechanism unit 130, a processing unit 140, a storage unit 150, and a power supply unit 160.

The power switch 133 is a switch for turning on / off the power supply to the determination apparatus 100 and for turning on / off the function of the determination apparatus 100. Although details will be described with reference to FIG. 9, power is supplied to the determination device 100 from a power supply unit 160 such as a battery built in the case 170.

The communication unit 110 has a function of transmitting / receiving wireless data to / from the remote control 400. For example, the communication unit 110 receives a determination start command from the remote control 400, and transmits wireless data indicating the determination result of the degree of deterioration of the overhead ground wire 510 to the remote control 400. Send.

The display lamp 121 is a light emitting element that outputs a determination result by emitting light in a different manner depending on the determination result of the degree of deterioration of the imaginary ground wire 510. The display lamp 121 according to this embodiment includes a green lamp 122 that emits green or blue light, a yellow lamp 123 that emits yellow or orange light, and a red lamp 124 that emits red light.

As will be described in detail later, the determination device 100 according to the present embodiment determines the degree of deterioration of the overhead ground wire 510 in three stages, and in the case of the most advanced deterioration (large deterioration) among the three stages. The red lamp 124 is turned on, the yellow lamp 123 is turned on when the deterioration has progressed moderately (deteriorating), and the green lamp 122 is turned on when the deterioration is least advanced (small deterioration). Let

The speaker 125 is a device that outputs a determination result by outputting a sound in a different manner according to the determination result of the degree of deterioration of the overhead ground wire 510.

For example, the determination apparatus 100 sounds a buzzer at a different volume depending on the determination result of the above three steps. For example, the determination device 100 sounds a buzzer at a volume larger than the sound volume when it is determined that deterioration is high when it is determined that deterioration is high, and is determined to be low when it is determined that deterioration is low. A buzzer sounds at a volume lower than the volume that sounds when judged.

Alternatively, the determination device 100 may intermittently sound the buzzer at different periods depending on the determination result. For example, when the determination device 100 determines that the deterioration is large among the three stages, the buzzer sounds intermittently at a cycle shorter than the cycle of the buzzer that sounds when it is determined that the deterioration is in progress, and the deterioration is determined to be low The buzzer sounds intermittently at a cycle longer than the cycle of the buzzer that blows when it is determined that the deterioration is in progress.

In this way, the worker 700 on the ground can know the determination result of the degree of deterioration of the overhead ground wire 510 by confirming the lighting pattern of the display lamp 121 and the sound blowing pattern from the speaker 125.

Alternatively, the determination device 100 may output the determination result of the deterioration degree by combining the lighting of the display lamp 121 and the sound of the sound from the speaker 125.

In this way, the determination device 100 can more reliably notify the ground worker 700 of the determination result of the degree of deterioration.

As shown in FIG. 2, the case 170 of the determination apparatus 100 according to the present embodiment is made of, for example, resin having insulation properties, and the overhead ground wire so as to straddle the overhead ground wire 510 from the main body portion 171. 510 is formed to have two legs (first leg 172 and second leg 173) extending on both sides.

With such a structure, when the worker 700 inspects the aerial ground wire 510 using the determination device 100 attached to the tip of the work bar 200, the space between the first leg 172 and the second leg 173 is determined. Since the determination device 100 can be easily placed on the overhead ground wire 510 with the overhead ground wire 510 interposed therebetween, the determination device 100 can be easily placed on the overhead ground wire 510.

In addition, once the determination apparatus 100 is placed on the overhead ground wire 510, the overhead ground wire 510 can be stabilized while being sandwiched between the first leg portion 172 and the second leg portion 173. Can be reduced.

In addition, since the determination device 100 can be stably placed on the overhead ground wire 510, for example, it is possible to prevent a situation in which the determination device 100 has to move unexpectedly on the overhead ground wire 510 and perform an inspection again, thereby reducing the work time. Can be shortened. Furthermore, since the heating position (first position 511) and the temperature measurement position (second position 512) of the overhead ground wire 510 are less likely to move unexpectedly during the inspection, measurement of the temperature change due to heating of the overhead ground wire 510 is measured. Therefore, it is possible to obtain the determination result of the degree of deterioration more accurately and objectively.

Moreover, since the case 170 of the determination apparatus 100 has insulation, even if the determination apparatus 100 is brought into contact with the distribution line 520 suspended from the utility pole 500, an electric shock to the worker 700 can be prevented. .

As shown in FIGS. 3 and 4, the case 170 of the determination device 100 is provided with a work bar coupling portion 180 for connecting to the work bar 200 on the second leg portion 173.

As shown in FIG. 7, the work bar 200 is coupled to the work bar coupling unit 180. The configuration of the work bar 200 is shown in FIG.

The determination apparatus 100 fits the connection pin 211 formed at the tip of the work bar 200 into the connection pin fixing part 183 formed at the work bar coupling part 180, and rotates the lock nut 220 in the lock direction. Combined with the work bar 200.

As shown in FIG. 6, the working rod 200 is a substantially cylindrical rod, and includes a determination device mounting portion 210, a lock nut 220, a draining collar 230, an insulating rod 240, and a grip 250. Has been.

The grip 250 is a part that is gripped by the worker 700.

Also, the insulating rod 240 is a rod having an insulating property on the surface, for example, a resin rod. Since the insulating rod 240 has an insulating property on the surface, even if the insulating rod 240 is brought into contact with the distribution line 520 suspended on the utility pole 500 together with the overhead ground wire 510, an electric shock to the worker 700 is prevented. be able to.

The draining collar 230 prevents the water droplet from reaching the grip 250 when the water droplet flows down the surface of the work bar 200.

The determination device mounting unit 210 is a portion where the determination device 100 is mounted. The determination device mounting portion 210 has a substantially cylindrical shape, and a connection pin 211 for coupling to the determination device 100 is formed on the outer surface of the determination device mounting portion 210 so as to protrude in the radial direction.

The lock nut 220 is configured to be rotatable around the central axis of the work bar 200. When the lock nut 220 is rotated, the lock nut 220 can be moved in the extending direction of the work bar 200.

On the other hand, as shown in FIGS. 3 and 4, the work bar coupling portion 180 of the determination apparatus 100 has a hollow, generally cylindrical shape with an open bottom surface on the side attached to the work bar 200. In addition, a slit (connection pin slit 181) that is substantially T-shaped so as to be continuous from the opening on the bottom surface is formed on the side surface of the working bar coupling portion 180.

The connection pin slit 181 includes a connection pin insertion portion 182 and a connection pin fixing portion 183.

The connecting pin insertion portion 182 opens so as to cut the side surface of the work bar coupling portion 180 from the bottom surface to the top surface of the work rod coupling portion 180, and further branches to the left and right so as to cut the cylindrical side surface in the circumferential direction. It is a substantially T-shaped slit that opens to the top.

The connecting pin fixing part 183 is formed so as to widen the opening in the direction toward the bottom surface of the work bar coupling part 180 at both ends of the opening branched to the left and right of the connecting pin insertion part 182.

Then, when the connection pin 211 of the work bar 200 is attached to the connection pin fixing portion 183 of the determination device 100 and the lock nut 220 is rotated in the lock direction in this state, the lock nut 220 moves in a direction approaching the determination device 100. The coupling between the determination device 100 and the work bar 200 can be strengthened. On the contrary, when the lock nut 220 is rotated in the release direction, the lock nut 220 moves away from the determination device 100, and the connection between the determination device 100 and the work bar 200 is loosened.

Next, the heater 131 and the temperature sensor 132 included in the determination apparatus 100 will be described.

As shown in FIGS. 4 and 5, the heater 131 and the temperature sensor 132 are spaced a predetermined distance (L) from the surface of the main body 171 between the first leg 172 and the second leg 173 of the case 170. It is fixed.

For this reason, as shown in FIG. 2, when the determination device 100 is placed on the overhead ground wire 510, the heater 131 and the temperature sensor 132 come into contact with the surface of the overhead ground wire 510 at a predetermined interval (L). To do. FIG. 5 shows a state where the heater 131 and the temperature sensor 132 are in contact with the surface of the overhead ground wire 510 at a predetermined interval (L).

In the present embodiment, the distance between the central portion of the heater 131 and the central portion of the temperature sensor 132 in the extending direction (x-axis direction) of the aerial ground wire 510 is the predetermined interval L. A distance between any one end of the heater 131 and any one end of the temperature sensor 132 in the direction (x-axis direction) may be a predetermined interval (L).

The heater 131 heats the surface of the overhead ground wire 510 at a first point 511 on the overhead ground wire 510. On the other hand, the temperature sensor 132 measures a temperature change of the imaginary ground wire 510 at a second point 512 that is separated from the first point 511 along the extending direction (x-axis direction) of the imaginary ground wire 510 by a predetermined interval (L). To do.

Here, since the overhead ground wire 510 is made of metal, the deterioration of rust, cracks, etc. progresses over time due to the influence of wind and rain. And as for metal, thermal conductivity falls as deterioration, such as rust, advances. Therefore, when the heater 131 is brought into contact with the first point 511 of the overhead ground wire 510 and heated for a predetermined time, the degree of temperature change at the second point 512 that is separated from the first point 511 by a predetermined interval (L) is measured. By doing so, it becomes possible to estimate the degree of deterioration of the overhead ground wire 510.

For example, when the first point 511 is heated by the heater 131 for a predetermined time (for example, 3 minutes), the degree of deterioration of the overhead ground wire 510 is estimated by measuring the temperature change amount (temperature rise width) at the second point 512. It becomes possible to do.

Alternatively, when the first point 511 is heated by the heater 131 for a predetermined time (for example, 3 minutes), the temperature change rate (temperature rise width per unit time) at the second point 512 is measured, thereby It is possible to estimate the degree of deterioration.

The heating of the overhead ground wire 511 by the heater 131 and the measurement of the temperature change by the temperature sensor 132 will be described later.

Next, the functional configuration of the determination apparatus 100 will be described with reference to FIG. As illustrated in FIG. 9, the determination apparatus 100 includes a communication unit 110, an output unit 120, a mechanism unit 130, a processing unit 140, a storage unit 150, and a power supply unit 160.

The communication unit (determination result output unit) 110 performs wireless communication with the remote controller 400. The output unit (determination result output unit) 120 performs various outputs in accordance with instructions from the processing unit 140. The output unit 120 includes, for example, a display lamp 121, a speaker 125, and the like. The mechanism unit 130 includes, for example, a power switch 133, a heater (wire heating unit) 131, a temperature sensor (temperature change measurement unit) 132, and the like.

The storage unit 150 stores data generated by the processing unit 140 and data used by the processing unit 140. The storage unit 150 includes a nonvolatile storage device such as a flash memory or a hard disk device. The storage unit 150 stores a temperature recording table 151 and a deterioration degree determination table 152 described later.

The power supply unit 160 is a power supply that supplies necessary power to each unit of the determination apparatus 100, and includes, for example, a battery.

The processing unit (degradation degree determination unit) 140 performs the overall control of the determination apparatus 100, and is realized, for example, by a CPU (Central Processing Unit) executing a program stored in the storage unit 150.

As described above, the temperature recording table 151 and the deterioration degree determination table 152 are stored in the storage unit 150.

An example of the temperature recording table 151 is shown in FIG. The temperature recording table 151 is a table for recording the measurement result of the temperature of the overhead ground wire 510 and the measurement result of the temperature change when the determination device 100 heats the overhead ground wire 510 by the heater 131.

In the temperature recording table 151, the temperature of the overhead ground wire 510 before the heater 131 heats the overhead ground wire 510 (first temperature) and the temperature after heating for a predetermined heating time (for example, 3 minutes) (second temperature). ) And the amount of change in temperature (difference between the first temperature and the second temperature).

Specifically, as shown in FIG. 10, the temperature recording table 151 has a “No” column, a “Measurement start temperature” column, a “Measurement end temperature” column, and a “Temperature increase width” column.

In the “No” column, the identification number of each measurement result is recorded. In the “measurement start temperature” column, the measurement result of the temperature (first temperature) of the overhead ground wire 510 before the heater 131 heats the overhead ground wire 510 is recorded. In the “measurement end temperature” column, the measurement result of the temperature (second temperature) of the overhead ground wire 510 after the heater 131 has heated the overhead ground wire 510 for a predetermined heating time (for example, 3 minutes) is recorded. In the “temperature rise width” column, the difference between the first temperature and the second temperature is recorded.

An example of the deterioration degree determination table 152 is shown in FIG. The deterioration degree determination table 152 is a table in which determination values for the determination apparatus 100 to determine the deterioration degree of the overhead ground wire 510 are recorded.

As shown in FIG. 11, the deterioration degree determination table 152 of the present embodiment has a degree of deterioration for each degree of deterioration of the overhead ground wire 510 divided into three stages (large deterioration, during deterioration, and low deterioration). The temperature rise width (determination value) of the imaginary ground wire 510 for determining that it exists is recorded.

The determination device 100 describes the measurement result of the temperature change of the overhead ground wire 510 recorded in the “temperature rise width” column of the temperature recording table 151 in the “temperature rise width” column of the deterioration degree determination table 152. By comparing with the determination value, the degree of deterioration of the overhead ground wire 510 is determined.

For example, in this embodiment, when the temperature rise at the second point 512 when the first point 511 of the overhead ground wire 510 is heated by the heater 131 for 3 minutes is 16 ° C. or more, the degree of deterioration of the overhead ground wire 511 is It is determined that it is “small” among the three stages of “large”, “medium”, and “small”. If the temperature rise is 13 ° C. or more and less than 16 ° C., the degree of deterioration of the overhead ground wire 511 is determined to be “medium”, and if the temperature rise is less than 13 ° C., the degree of deterioration of the overhead ground wire 511 Is determined to be “large”.

The contents of the determination value recorded in the deterioration degree determination table 152 can be obtained by conducting an experiment or the like in advance.

It should be noted that the deterioration degree determination table 152 can be configured as shown in FIG.

The deterioration degree determination table 152 shown in FIG. 12 is for determining the degree of deterioration for each degree of deterioration of the overhead ground wire 510 divided into three stages (high deterioration, during deterioration, and low deterioration). The temperature rise rate (judgment value) of the overhead ground wire 510 is recorded.

The temperature increase rate is calculated by the determination device 100 dividing the value of “temperature increase width” recorded in the temperature recording table 151 by the heating time (3 minutes). The determination apparatus 100 determines the degree of deterioration of the overhead ground wire 510 by calculating the temperature increase rate in this way and comparing it with the determination value described in the “temperature increase rate” column of the deterioration degree determination table 152. To do.

For example, when the temperature increase rate at the second point 512 when the first point 511 of the overhead ground wire 510 is heated by the heater 131 for 3 minutes is 5 ° C./min or more, the degree of deterioration of the overhead ground wire 511 is “large”. It is determined that it is “small” among the three levels of “medium” and “small”. When the temperature rise rate is 2 ° C./min or more and less than 5 ° C./min, it is determined that the degree of deterioration of the overhead ground wire 511 is “medium”, and when the temperature rise rate is less than 2 ° C./min, It is determined that the degree of deterioration of the ground line 511 is “large”.

The degree of deterioration of the imaginary ground wire 510 determined in this way is transmitted from the determination device 100 to the remote controller 400 as described above. The remote controller 400 displays the determination result as shown in FIG.

As shown in FIG. 8, the remote control 400 has an output unit 420, a power on / off button 431, and a determination start button 432.

The output unit 420 displays the determination result of the imaginary ground wire 510 transmitted from the determination device 100. The power on / off button 431 is a switch for turning on / off the power supply to the remote control 400 and for turning on / off the function of the remote control 400. Although details will be described later with reference to FIG. 13, power is supplied to the remote control 400 from a power supply unit 460 such as a battery built in the remote control 400.

The determination start button 432 is a switch for instructing the determination device 100 to wirelessly instruct the heating of the heater 131 and the temperature measurement of the overhead ground wire 510 by the temperature sensor 132 and to start the inspection of the degree of deterioration of the overhead ground wire 510. It is.

Next, the functional configuration of the remote controller 400 will be described with reference to FIG. As shown in FIG. 13, the remote control 400 includes a communication unit 410, an output unit 420, an input unit 430, a processing unit 440, a storage unit 450, and a power supply unit 460.

The communication unit (determination result receiving unit) 410 performs wireless communication with the processing device 100. The output unit (deterioration degree output unit) 420 performs various outputs according to instructions from the processing unit 440. The output unit 420 includes, for example, a liquid crystal display. The input unit 430 includes, for example, a power on / off button 431, a determination start button 432, and the like.

The storage unit 450 stores data generated by the processing unit 440 and data used by the processing unit 440. The storage unit 450 includes a nonvolatile storage device such as a flash memory or a hard disk device.

The power supply unit 460 is a power supply that supplies necessary power to each unit of the remote control 400, and includes, for example, a battery.

The processing unit 440 controls the entire remote controller 400, and is realized by, for example, a CPU (Central Processing Unit) executing a program stored in the storage unit 450.

Note that the remote controller 400 may be a device dedicated to the determination system 600 according to the present embodiment, or may be realized using a general-purpose portable electronic terminal such as a notebook PC (Personal Computer) or a smartphone. .

Next, with reference to FIG. 1 and FIG. 14 to FIG. 16, the flow of processing when performing the inspection of the degree of deterioration of the overhead ground wire 510 laid on the utility pole 500 using the determination system 600 will be described.

First, the power switches of the determination apparatus 100 and the remote controller 400 are turned on by the worker A 701 and the worker B 702, respectively (S1000, S2000). As a result, the determination apparatus 100 and the remote controller 400 start their functions.

Next, the worker A 701 installs the determination device 100 at a position for inspecting the degree of deterioration on the overhead ground wire 510 (S2010). At this time, a position where the heater 131 contacts on the imaginary ground wire 510 is a first position 511, and a position where the temperature sensor 132 contacts is a second position 512.

When the determination start button 432 of the remote controller 400 is pressed by the operator B 702 in this state (S1010), the remote controller 400 transmits a determination start command for the degree of deterioration of the overhead ground wire 510 to the determination apparatus 100 (S1020). .

And the determination apparatus 100 will measure the temperature (1st temperature) in the 2nd point 512, if the determination start command is received (S2020. (A) shown in FIG. 15). Then, the determination apparatus 100 records the measured value of the temperature (first temperature) in the “measurement start temperature” column of the temperature recording table 151.

Subsequently, the determination apparatus 100 starts heating the heater 131 (S2030. (B) shown in FIG. 15). When a predetermined heating time (for example, 3 minutes) has elapsed (S2040: YES), the determination apparatus 100 stops heating the heater 131 (S2050, (C) in FIG. 15).

Then, the determination device 100 again measures the temperature (second temperature) at the second point 512 (S2060, (D) in FIG. 15). Then, the determination apparatus 100 records the measured value of the temperature (second temperature) in the “measurement end temperature” column of the temperature recording table 151.

Then, the determination device 100 obtains a difference between the first temperature of the overhead ground wire 510 measured before heating by the heater 131 and the second temperature measured after heating by the heater 131, and “temperature rise width” of the temperature recording table 151. The difference is recorded in the column, and the difference is compared with the determination value described in the deterioration degree determination table 152 to determine the deterioration degree (S2070).

Then, the determination device 100 transmits the wireless data indicating the determination result and the temperature measurement result to the remote control 400 (S2080).

The remote controller 400 displays the deterioration degree determination result and the temperature measurement result on the output unit 420 (S1030).

This makes it possible to determine the degree of deterioration of the overhead ground wire 510 based on the measurement result of the temperature change of the overhead ground wire 510 without depending on the subjectivity of the worker 700, and objectively the overhead ground wire. It becomes possible to determine the degree of deterioration of 510.

In addition to heating the overhead ground wire 510 by the heater 131 for a predetermined time, the deterioration degree is determined based on the temperature change of the overhead ground wire 510 before and after heating, so that the overhead ground wire 510 is deteriorated. It is possible to accurately determine the degree of deterioration of the overhead ground wire 510 by utilizing the decrease in thermal conductivity.

Note that when the determination device 100 transmits the determination result of the degree of deterioration of the overhead ground wire 510 to the remote control 400 by wireless data in S2080, the determination device 100 turns on the display lamp 121 and the sound from the speaker 125 in a manner according to the determination result. You may make it sound. Thereby, the worker A 701 who cannot visually recognize the output unit 420 of the remote controller 400 can also know the determination result.

Further, the timing for heating the overhead ground wire 510 by the heater 131 and the timing for measuring the temperature of the overhead ground wire 510 by the temperature sensor 132 may be as shown in FIG.

In this case, when receiving a determination start command from the remote control 400 (S1020), the determination apparatus 100 starts heating the heater 131 ((E) shown in FIG. 16), and then the temperature at the second point 512 (first temperature). Is measured ((F) shown in FIG. 16). The determination apparatus 100 records the measured value of the temperature (first temperature) in the “measurement start temperature” column of the temperature recording table 151 and further continues heating the heater 131. When a predetermined heating time (for example, 3 minutes) elapses, the determination apparatus 100 again measures the temperature (second temperature) at the second point 512 ((G) in FIG. 16), and measures the temperature (second temperature). The value is recorded in the “temperature at the end of measurement” column of the temperature recording table 151. And the determination apparatus 100 stops the heating of the heater 131 ((H) in FIG. 16).

According to such an aspect, after the determination apparatus 100 measures the first temperature (at the time (F) in FIG. 16) until the second temperature is measured (at the time (G) in FIG. 16). Since the heating by the heater 131 is continued, the temperature change of the overhead ground wire 510 due to the heating to the overhead ground wire 510 can be measured more accurately, and the deterioration degree of the overhead ground wire 510 is more accurately determined. It becomes possible.

In the above-described embodiment, the case where the operator A 701 grips the work stick attached determination device 300 and the operator B 702 operates the remote controller 400 to inspect the degree of deterioration of the overhead ground wire 510 is shown. It is also possible for the worker A 701 to check the degree of deterioration of the aerial ground wire 510 by using the work bar attached determination device 300 without using 400.

In this case, for example, when the determination device 100 is placed on the overhead ground wire 510, a sensor (for example, a pressure sensor) for detecting contact with the overhead ground wire 510 is provided in the determination device 100, and the operator A701 is provided. When the pressure sensor detects that the determination device 100 is placed on the overhead ground wire 510, the processing unit 140 operates the heater 131 and the temperature sensor 132 in the above-described procedure, and performs the deterioration determination processing for the overhead ground wire 510. To do.

Then, the determination apparatus 100 outputs the determination result from the display lamp 121 or the speaker 125 and notifies the worker A701 on the ground.

According to such a form, it becomes possible for only one worker A701 to inspect the degree of deterioration of the overhead ground wire 510.

Alternatively, the determination apparatus 100 according to the above embodiment includes the display lamp 121 and the speaker 125, but may be configured without the display lamp 121 and the speaker 125.

In this case, the determination apparatus 100 transmits the determination result of the degree of deterioration of the overhead ground wire 510 to the remote control 400 by radio, and the worker 700 on the ground sees the determination result displayed on the remote control 400. The degree of deterioration of the overhead ground wire 510 can be known.

Furthermore, the determination apparatus 100 can be configured not to include not only the display lamp 121 and the speaker 125 but also the communication unit 110 and does not communicate with the remote controller 400. In this case, the determination apparatus 100 stores the determination result of the degree of deterioration of the overhead ground wire 510 in the storage unit 150. Then, after the work is completed, the worker 700 reads the determination result stored in the storage unit 150 using a predetermined data reading device (not shown), and acquires the degree of deterioration of the overhead ground wire 510.

In the above embodiment, the determination apparatus 100 measures the temperature of the overhead ground wire 510 (second temperature) after heating the heater 131 for a predetermined time (for example, 3 minutes), and measures the temperature (first temperature) before heating. The temperature rise width and the temperature rise speed are obtained based on the difference from the temperature), and the degree of deterioration of the overhead ground wire 510 is determined.

However, for example, at a time point before the heating time of the heater 131 reaches the predetermined time (for example, 1 minute after the start of heating), the temperature of the overhead ground wire 510 (third temperature) is once measured, and this third temperature is measured. The temperature rise width and the temperature rise speed may be obtained based on the difference between the first temperature and the first temperature, and the degree of deterioration of the overhead ground wire 510 may be determined.

In this case, it can be determined that the temperature rise width or the temperature rise speed of the overhead ground wire 510 is already equal to or higher than a predetermined determination value at one minute after the start of heating by the heater 131 and the deterioration of the overhead ground wire 510 has not progressed. In such a case (for example, when it can be determined that “deterioration is small” in the above embodiment), the determination apparatus 100 may determine the degree of deterioration of the overhead ground wire 510 at this time and stop the heating of the heater 131. .

According to such a form, since the work time per time when determining the degree of deterioration of the overhead ground wire 510 can be shortened, the work efficiency is improved and the heater 131 is operated. Since the time can be shortened, the power consumption of the determination apparatus 100 can be reduced.

In this case, at one minute after the start of heating of the heater 131, the temperature rise width or the temperature rise speed of the overhead ground wire 510 is determined that the overhead ground wire 510 has not deteriorated ("deterioration is small"). If it is not larger than the determination value for performing, the heater 131 is heated for a predetermined heating time (3 minutes) as originally scheduled, and then the temperature (second temperature) of the overhead ground wire 510 is measured to obtain the second temperature. The temperature rise width and the temperature rise speed may be obtained based on the difference between the first temperature and the first temperature, and the degree of deterioration of the overhead ground wire 510 may be determined.

The determination device 100 according to the above embodiment determines the degree of deterioration of the overhead ground wire 510 based on the degree of temperature change of the overhead ground wire 510 due to heating from the heater 131. For example, the temperature change amount of the overhead ground wire 510 When the temperature change speed changes due to the influence of the outside air temperature, the degree of deterioration may be determined by taking the outside air temperature into consideration.

In this case, for example, the determination device 100 is provided with a sensor for measuring the outside air temperature, and is described in the “temperature increase range” column and “temperature increase rate” column of the deterioration degree determination table 152 shown in FIG. 11 and FIG. When a determination table 100 determines the degree of deterioration of the overhead ground wire 510, a correction table (not shown) for correcting the determined determination value according to the outside air temperature or a conversion formula for correction is separately stored. In addition, the determination value of the deterioration degree determination table 152 may be corrected according to the outside air temperature using this correction table (not shown) and a conversion formula.

Thus, even when the temperature change amount and the temperature change speed of the overhead ground wire 510 change depending on the outside air temperature, the degree of deterioration of the overhead ground wire 510 can be accurately determined.

Alternatively, a plurality of deterioration degree determination tables 152 are created in advance under a plurality of outside air temperatures, and the determination apparatus 100 determines the deterioration degree corresponding to the outside air temperature when determining the deterioration degree of the overhead ground wire 510. The table 152 may be selected and the degree of deterioration may be determined.

Even in such a form, even when the temperature change amount and the temperature change speed of the overhead ground wire 510 change depending on the outside air temperature, the degree of deterioration of the overhead ground wire 510 can be accurately determined.

Note that the determination apparatus 100 according to the present embodiment, when the determination apparatus 100 is placed on an imaginary ground wire 510, for example, as illustrated in FIGS. 2 and 5, the surroundings of the heater 131 and the temperature sensor 132 are aerial. In this configuration, the ground wire 510, the main body 171, the first leg 172, and the second leg 173 are covered. By setting it as such a form, the heat from the heater 131 is hard to spread | diffuse to external air, and it can make it hard to receive the influence of external temperature.

In addition, the overhead ground wire 510 may be configured by a single metal wire, and may be configured by twisting a plurality of metal strands.

FIG. 17 is a cross-sectional view of the overhead ground wire 510 when the overhead ground wire 510 is formed by twisting a plurality of strands. An overhead ground wire 510 shown in FIG. 17 is formed by twisting seven metal strands 510A to 510G at a predetermined pitch. A side view of the overhead ground wire 510 is shown in FIG.

In the case of the overhead ground wire 510 formed by twisting a plurality of strands, the degradation of the overhead ground wire 510 proceeds for each strand. For example, in the case of the overhead ground wire 510 shown in FIG. 17, the deterioration progresses for each of the strands 510A to 510G. In this case, the deterioration of the overhead ground wire 510 proceeds not only in the visible surface but also in the invisible interior.

Further, in the case of the overhead ground wire 510 formed by twisting a plurality of strands, the temperature rise width when the overhead ground wire 510 is heated by the heater 131 is the strand heated by the heater 131 (first strand). ) And the wire for measuring the temperature change (second wire) are different. Furthermore, when the strand heated by the heater 131 (first strand) and the strand measuring the temperature change (second strand) are different, the positional relationship between these strands (for example, whether or not they are adjacent) )), The temperature rise will vary.

For this reason, in the determination apparatus 100 according to the present embodiment, the distance (L) between the heater 131 and the temperature sensor 132 is determined in consideration of the twist pitch of each strand of the overhead ground wire 510 that performs deterioration determination. ing.

For example, as shown in FIG. 18, in the determination apparatus 100 according to the present embodiment, the strand heated by the heater 131 (first strand) and the strand measuring the temperature change (second strand) are not the same. As described above, the distance (L) between the heater 131 and the temperature sensor 132 is determined. In the example shown in FIG. 18, when the strand (first strand) heated by the heater 131 is the strand 510A, the strand (second strand) for measuring the temperature change is the strand 510D. It is stipulated in. Accordingly, similarly, when the strand heated by the heater 131 (first strand) becomes the strand 510B, the strand (second strand) for measuring the temperature change becomes the strand 510E, and the heater 131 When the element wire to be heated (first element wire) is the element wire 510C, the element wire (second element wire) for measuring the temperature change is the element wire 510F.

As described above, the distance between the heater 131 and the temperature sensor 132 is set so that the strand heated by the heater 131 (first strand) and the strand measuring the temperature change (second strand) are not the same. By determining (L), it becomes possible to detect a decrease in thermal conductivity across the strands, so even if the surface of the overhead ground wire 510 is not deteriorated, the overhead ground wire 510 It is possible to detect the deterioration inside. As a result, it is possible to detect deterioration of the overhead ground wire 510 that is not visible from the outside.

Although the determination system 600, the determination apparatus 100, and the determination method according to the present embodiment have been described above, according to the present embodiment, the determination of the degree of deterioration of the imaginary ground wire 510 is performed without depending on the subjectivity of the worker 700. It is possible to perform the determination based on the measurement result of the temperature change of the line 510, and it is possible to objectively determine the degree of deterioration of the overhead ground wire 510.

In addition, the determination apparatus 100 according to the present embodiment performs at least the first temperature, which is the temperature before the heater 131 starts heating the overhead ground wire 510, and the heating to the overhead ground wire 510 for a predetermined heating time. The second temperature, which is the later temperature, can be measured. As a result, it is possible to accurately detect a decrease in thermal conductivity associated with the deterioration of the overhead ground wire 510, and it is possible to accurately determine the degree of deterioration of the overhead ground wire 510.

In addition, the determination apparatus 100 according to the present embodiment continues at least the first temperature that is the temperature after the heater 131 starts heating the overhead ground wire 510 and the heating to the overhead ground wire 510 for a predetermined heating time. It can also comprise so that 2nd temperature which is the temperature after having performed may be measured. Thereby, since the heating by the heater 131 continues until the determination apparatus 100 measures the first temperature until the second temperature is measured, the temperature change due to the heating to the overhead ground wire 510 is further reduced. It can be measured accurately. And it becomes possible to determine the deterioration degree of the overhead ground wire 510 more accurately.

In addition, the determination apparatus 100 according to the present embodiment compares the difference between the first temperature and the second temperature with a predetermined determination value described in the deterioration degree determination table 152, so that the degree of deterioration of the aerial ground wire 510 is increased. Can be determined. With such a configuration, it is possible to clarify the determination criteria for the degree of deterioration and to make a quick determination. What is necessary is just to memorize | store this judgment value in the judgment apparatus 100 previously calculated | required by experiment etc. according to the characteristic of the overhead ground wire 510. FIG.

In addition, the determination apparatus 100 according to the present embodiment obtains a temperature increase rate per unit time from the first temperature, the second temperature, and the heating time of the heater 131, and compares the temperature increase rate with a predetermined determination value. Thus, it is possible to determine the degree of deterioration of the overhead ground wire 510. Even with such a configuration, it is possible to clarify the criteria for determining the degree of deterioration, and to make a quick determination. The determination value in this case may also be stored in the determination apparatus 100 in advance by experiments or the like according to the characteristics of the overhead ground wire 510.

Also, the determination apparatus 100 according to the present embodiment can output a determination result when determining the degree of deterioration. Thereby, the worker 700 can immediately know the inspection result while performing the inspection work of the deterioration degree.

In this case, the determination apparatus 100 may output the determination result by emitting light in a different manner depending on the determination result. Thereby, the worker 700 working on the ground can easily know the determination result by visually recognizing the light emission pattern.

Further, the determination device 100 may output the determination result by outputting the sound in a different manner depending on the determination result. Thereby, the worker 700 who is working on the ground can easily know the determination result by distinguishing the sound blowing pattern.

Further, the determination apparatus 100 may output the determination result by outputting wireless data of a different mode according to the determination result to the remote control 400 connected to be communicable. Thereby, the worker 700 who is working on the ground can easily know the determination result by browsing the determination result transmitted to the remote controller 400.

In addition, the determination apparatus 100 includes a main body 171 that fixes the heater 131 and the temperature sensor 132 so that the heater 131 and the temperature sensor 132 are in contact with the surface of the overhead ground wire 510 at a predetermined interval (L). When the portion 171 is placed on the overhead ground wire 510 and the heater 131 and the temperature sensor 132 are brought into contact with the surface of the overhead ground wire 510, the overhead ground wire extends across the overhead ground wire 510 from the main body portion 171. The first leg 172 and the second leg 173 that extend to both sides of the 510, and a work rod that is gripped by the worker 700 on the second leg 173 that extends to one side of the overhead ground wire 510 A work bar coupling portion 180 for coupling the tip ends of the 200 may be formed.

As a result, the determination apparatus 100 can be coupled to the work bar 200, so that the worker 700 inspects the degree of deterioration of the aerial ground wire 510 suspended at a high place on the utility pole 500 while on the ground. It becomes possible.

Further, when the aerial ground wire 510 is a stranded wire formed by twisting a plurality of metal strands, the first interval at which the heater 131 comes into contact with a predetermined interval (L) separating the heater 131 and the temperature sensor 132. You may make it determine so that a strand may differ from the 2nd strand with which the temperature sensor 132 contacts. As a result, it is possible to detect a decrease in thermal conductivity across the strands, so even if the surface of the overhead ground wire 510 is not degraded, the degradation inside the overhead ground wire 510 is detected. It becomes possible. As a result, it is possible to detect deterioration of the overhead ground wire 510 that is not visible from the outside.

The above-described embodiment is for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention.

For example, in the above embodiment, the case where the degree of deterioration of the overhead ground wire 510 suspended from the utility pole 500 is described as an example. However, the present invention can also be used to determine the degree of deterioration of a messenger wire or a horizontal branch line, for example. Further, it can be used when determining the degree of deterioration of a general metal wire laid outdoors.

100 determination device 110 communication unit 120 output unit 121 display lamp 125 speaker 130 mechanism unit 131 heater 132 temperature sensor 133 power switch 140 processing unit 150 storage unit 151 temperature recording table 152 deterioration degree determination table 160 power supply unit 170 case 171 body unit 172 second 1 leg part 173 2nd leg part 180 work bar coupling part 200 work bar 300 judgment apparatus with work bar 400 remote control 410 communication part 420 output part 430 input part 431 power on / off button 432 judgment start button 440 processing part 450 storage part 460 power source Part 500 Electric pole 510 Overhead ground wire 511 First point 512 Second point 520 Distribution line 600 Determination system 700 Worker 701 Worker A
702 Worker B

Claims

A determination device for determining the degree of deterioration of a metal wire laid outdoors,
At a first point on the wire, a wire heating unit that heats the surface of the wire;
A temperature change measuring unit that measures a temperature change of the wire at a second point separated from the first point by a predetermined interval along the extending direction of the wire;
A deterioration degree determination unit that determines the degree of deterioration of the wire based on the measurement result of the temperature change;
A determination apparatus comprising:
The determination device according to claim 1,
The temperature change measuring unit is at least a first temperature that is a temperature before the wire heating unit starts heating the wire, and a temperature after heating the wire for a predetermined heating time. A determination apparatus characterized by measuring two temperatures.
The determination device according to claim 1,
The temperature change measurement unit is at least a first temperature that is a temperature after the wire heating unit starts heating the wire, and a temperature after the heating of the wire is further continued for a predetermined heating time. A determination device that measures the second temperature.
The determination device according to claim 2 or 3, wherein
The determination device, wherein the deterioration degree determination unit determines the degree of deterioration of the wire by comparing a difference between the first temperature and the second temperature with a predetermined determination value.
The determination device according to claim 2 or 3, wherein
The deterioration degree determination unit obtains a temperature increase rate per unit time of the second point from the first temperature, the second temperature, and the predetermined heating time, and determines the temperature increase rate as a predetermined determination value. A determination apparatus that determines the degree of deterioration of the wire by comparing.
The determination apparatus according to any one of claims 1 to 5,
A determination result output unit for outputting the determination result of the deterioration degree;
The determination apparatus further comprising:
The determination device according to claim 6,
The determination apparatus, wherein the determination result output unit outputs the determination result by emitting light in a different manner according to the determination result.
The determination device according to claim 6,
The determination apparatus, wherein the determination result output unit outputs the determination result by outputting a sound in a different manner depending on the determination result.
The determination device according to claim 6,
The determination result output unit outputs the determination result by outputting wireless data of a different mode according to the determination result to a wireless receiving device connected to be communicable. .
The determination apparatus according to any one of claims 1 to 9,
A main body unit that fixes the wire heating unit and the temperature change measurement unit so that the wire heating unit and the temperature change measurement unit are in contact with the surface of the wire at a predetermined interval;
When the main body portion is placed on the wire and the wire heating portion and the temperature change measurement portion are brought into contact with the surface of the wire, both sides of the wire are straddled across the wire from the main body portion. A plurality of legs extending to
Further comprising
The determination apparatus according to claim 1, wherein a work bar coupling part for coupling a tip part of a work bar gripped by an operator is formed on the leg part extending to one side of the wire.
The determination device according to claim 10,
The wire is a stranded wire formed by twisting a plurality of metal strands,
The predetermined interval separating the wire heating unit and the temperature change measurement unit is determined so that the first strand in contact with the wire heating unit is different from the second strand in contact with the temperature change measurement unit. A determination apparatus characterized by that.
The determination apparatus according to any one of claims 1 to 11,
The determination apparatus according to claim 1, wherein the wire is an aerial ground wire suspended from a utility pole.
A determination system configured to include a determination device for determining the degree of deterioration of a metal wire laid outdoors, and a wireless reception device communicably connected to the determination device,
The determination device includes:
At a first point on the wire, a wire heating unit that heats the surface of the wire;
A temperature change measuring unit that measures a temperature change of the wire at a second point separated from the first point by a predetermined interval along the extending direction of the wire;
A deterioration degree determination unit that determines the degree of deterioration of the wire based on the measurement result of the temperature change;
A determination result output unit that transmits the determination result of the deterioration degree to the wireless reception device;
With
The wireless receiver is
A determination result receiving unit that receives the determination result from the determination device;
A deterioration degree output unit for outputting the determination result;
A determination system comprising:
A determination method for determining the degree of deterioration of a metal wire laid outdoors,
Heating the surface of the wire at a first point on the wire;
At a second point separated from the first point by a predetermined interval along the direction of stretching of the wire, the temperature change of the wire is measured,
A determination method comprising: determining a degree of deterioration of the wire based on a measurement result of the temperature change.