JP6811683B2 - Connection confirmation system - Google Patents

Description

The present invention relates to a connection confirmation system for confirming whether or not the cable and / and the core wire are correctly connected according to a design drawing and a connection diagram in cable work.

FIG. 12 is a processing flow chart of the conventional cable work. As shown in the figure, cable work includes new construction work during plant construction, wire disconnection / restoration work during periodic inspections, and repair / modification / renewal work.
As an example, the cable work in the new construction is carried out as follows. A work group in charge of work is selected from a plurality of work groups registered in advance (step 1). Next, the end treatment (peeling, end treatment) of the cable is performed (step 2), and the cable is laid in the facility along the pre-designed cable laying route (planned cable tray or cable rack route). Perform the work (step 3). Then, while referring to the design drawing, the state in which the end of the cable is connected to the board or terminal block to which the cable is connected, that is, the so-called connection state is confirmed (step 4). After that, a report of the above work is created (step 5), and the work is completed.

For disconnection / restoration work, select a work group in charge of the work from a plurality of pre-registered work groups (step 10), and check the current connection status of the cable for performing disconnection / restoration work. Draw a wiring diagram (step 11). Next, a wire disconnection operation for removing the cable from the terminal block is performed (step 12), and then a restoration operation for returning the cable to the original connection state is performed (step 13). Then, referring to the wiring diagram, it is confirmed whether or not the cable is connected to an appropriate position on the terminal block, and the connection status thereof (step 14). After that, a report of the above work is prepared (step 15), and the work is completed.

Furthermore, for repair / modification / renewal work, a work group is selected in the same manner as above (step 20). Cable end treatment (peeling, end treatment) is performed (step 21). Draw a wiring diagram of the current connection status of the cable (step 22). The old cable is removed (step 23), and the new cable is laid (step 24). Then, the connection status is confirmed with reference to the connection diagram (step 25). After that, a work report is created (step 26), and the work is completed.

By the way, since there are a plurality of cables and core wires in the cable work, human error is likely to occur. Therefore, various systems for confirming whether the wires are correctly connected at the time of laying and restoration work have been proposed.
The system disclosed in Patent Document 1 reads an RFID index sticker attached to the end of a cable with a tag reader of a PDA (Personal Digital Assistant) carried by an operator, and acquires work information of the cable corresponding to the read index. doing. Then, the worker is performing work such as cable laying while looking at the work information displayed on the PDA screen.

Japanese Unexamined Patent Publication No. 2008-171186

According to the system disclosed in Patent Document 1, the labor and time of the operator can be reduced, but a dedicated tag reader is required and the cost of the entire system is increased.
By the way, as a means for an operator to distinguish a plurality of cables and core wires during wiring work, the color of the cables and core wires may be used as a clue. However, there may be a dark place at the work site, and in such a place, it may be difficult to identify the cable and the core wire even though they are color-coded. In this case, it is necessary to prepare a lighting device or use a hand light, but depending on the light emitting characteristics of the lighting device (such as the color of the light), the color of the cable and core wire is difficult to understand, and it is easy to induce misjudgment. Was there.

In view of the above problems of the prior art, it is an object of the present invention to provide a connection confirmation system capable of easily and surely confirming the connection of a cable or a core wire regardless of the environment of the work site (particularly by lighting).

As a first means for solving the above problems, the present invention includes a plurality of cables and a color code that is attached to a core wire from which the cable coating has been removed so that they can be individually identified and emit light by ultraviolet irradiation.
An ultraviolet irradiation means for irradiating the color code with ultraviolet rays,
A photographing means for photographing the color code irradiated with ultraviolet rays, and
A reading means for identifying the cable and the core wire from which the cable coating has been removed by reading the color code in the captured image, and
The purpose is to provide a connection confirmation system characterized by being equipped with.
According to the first means, the color of the cable and the core wire from which the cable coating has been removed can be identified regardless of the environment of the site such as a dark place or the emission color of lighting, and human error can be prevented. Work time can be shortened.

As a second means for solving the above-mentioned problems, the present invention makes it possible for the ultraviolet irradiation means to irradiate a plurality of ultraviolet rays having different main wavelengths in the first means, and the color code is the main wavelength. It is an object of the present invention to provide a connection confirmation system characterized in that the color development range is shifted by irradiation with a plurality of different ultraviolet rays.
According to the second means, the colors of the plurality of cables and / and the core wires can be reliably and individually identified regardless of the characteristics of the ultraviolet ink.

As a third means for solving the above-mentioned problems, in the first or second means, in the reading means, the identified cable and the core wire from which the cable coating is removed are the design drawing or the wiring diagram. An object of the present invention is to provide a connection confirmation system including an image processing unit for determining whether or not the connection position matches the connection position.
According to the third means, it is possible to significantly reduce the labor and time of the operator in the wiring work and prevent human error.

As a fourth means for solving the above problem, in the third means, the image processing unit extracts the brightness before identifying the cable and the core wire from which the cable coating has been removed. An object of the present invention is to provide a connection confirmation system characterized by determining whether or not a threshold value is satisfied.
According to the fourth means, the color code can be reliably identified by ultraviolet irradiation regardless of the characteristics of the ultraviolet ink and the ultraviolet irradiation means.

As a fifth means for solving the above-mentioned problems, the present invention presents the present invention in any one of the first to fourth means, wherein the cable and the core wire from which the cable coating is removed based on the cable information, the core wire information, and the system information. To provide a connection confirmation system characterized by creating the color code that can be individually identified and providing a color code issuing means for setting an ultraviolet wavelength that shifts the color range in which the color code strongly emits light. is there.
According to the fifth means, the cable and the core wire from which the cable coating has been removed can be individually identified, and a color code that emits light by ultraviolet irradiation can be easily generated and attached.

According to the present invention, the color of the cable and / and the core wire can be identified regardless of the site environment such as a dark place or the emission color of lighting, and the connection state is determined by image processing of the captured image to determine the design drawing. Alternatively, the same wiring work as the wiring diagram can be performed, human error can be prevented, and the working time can be shortened.

It is explanatory drawing of the connection confirmation system of this invention. It is explanatory drawing of a color code. It is explanatory drawing of the color code attachment means. It is a processing flow chart of the cable work of this invention. It is a processing flow chart of color code recognition and connection confirmation of new construction. It is a process flow chart of color code recognition. It is a processing flow chart of color code recognition and connection confirmation of a periodic inspection. It is explanatory drawing of the color code of the ultraviolet irradiation with different main wavelengths. It is a processing flow chart of color code recognition and connection confirmation of a new construction of a modified example. It is a processing flow chart of the color code recognition and the connection confirmation of the periodic inspection of the modification example. It is explanatory drawing of the color code of the modification and the process flow chart of color code recognition. It is a processing flow chart of the conventional cable work.

An embodiment of the connection confirmation system of the present invention will be described in detail below with reference to the accompanying drawings.

[Connection confirmation system 10]
FIG. 1 is a schematic configuration diagram of the connection confirmation system of the present invention. As shown in the figure, the connection confirmation system 10 of the present invention includes a photographing means 12 for photographing a cable and / and a core wire, an ultraviolet irradiation means 14 for irradiating the cable and / and the core wire with ultraviolet rays, and the cable and / and the core wire. The color code that is the assigned index and the attribute data of the cable or / and the core wire (system name, cable model, number of core wires, allowable current, voltage, length, thickness, information on connected devices, panel name, connection terminal A database (DB) 16 for storing (name, connection terminal number, etc.), a reading means 20 for reading the color code from an image (image) obtained by irradiating the cable and / and the core wire with ultraviolet rays, and the cable or /. A color code issuing means 30 for issuing a color code assigned according to the core wire, and a color code attaching means 40 for attaching or printing the color code to the cable and / or the core wire are provided.

[Color code 3]
FIG. 2 is an explanatory diagram of a color code. The cable 1 is formed by coating a plurality of core wires 2 coated with an insulating coating with a plurality of exterior coatings. The color code 3 of the present embodiment uses invisible ink such as ultraviolet ink (or black light ink) that emits light when irradiated with ultraviolet rays of a predetermined wavelength, and seals or the like on the end surface of the cable 1 and the end surface of the core wire 2. It is an individually identifiable code attached by pasting or printing.
As shown in (1), the color code 3 divides 360 hues into 16 equal parts over the entire region emitted by ultraviolet irradiation, and is represented by a number 0 to 9 and a total of 16 alphanumeric characters A to F. Each hue is assigned using the characters and symbols that are used. The graph of emission intensity in (1) is an example of an ultraviolet ink that emits strong light around green (character symbols 5 to A). It is necessary that the threshold value (broken line) for identification in the image processing described later is exceeded. Then, the color code 3 of the core wire 2 is set from the end to the starting number alphabet (1 character) + S (meaning of the core wire) + intermediate number alphabet (2 characters) + final number alphabet (2 characters) + cable number (3 characters). It is configured to be identifiable. For example, in (2), in order from the top of the four core wires 2, the starting number alphabet is 1, the core wire S, the intermediate number alphabet is 36, the final number alphabet is 79, the cable number is 039, and the second core wire is the start. The number alphabet is C, the core wire S, the middle number alphabet is 35, the final number alphabet is AC, the cable number is 039, and the third core wire is the start number alphabet 7, the core wire S, the middle number alphabet is BD, and the final number alphabet is The EF, the cable number is 039, and the fourth core wire is set so that the start number alphabet is 4, the core wire S, the intermediate number alphabet is D2, the final number alphabet is 31, and the cable number is 039.

Similarly, for the color code 3 of the cable 1, the starting number alphabet (1 character) + K (meaning of the cable) + cable number (3 characters) + intermediate number alphabet (3 characters) + final number alphabet (2 characters) It is set to identifiable. For example, in (2), the starting number alphabet is set to 3, the cable K, the cable number is set to 039, the median alphabet is set to 1E2, and the final number alphabet is set to 40.
Further, as shown in FIG. 8, the color code 3 can be configured by combining each color (various types) of ultraviolet inks (black light inks) having different emission intensities due to the ultraviolet irradiation of the ultraviolet irradiation means 14. That is, it is preferable to combine all colors (corresponding to all character symbols) so as to exceed a recognizable threshold value so that identification by image processing described later is possible. The color code 3 (black light ink) shifts its color development range depending on the main wavelength of the ultraviolet rays irradiated by the color (for example, 365 nm, 370 nm, 375 nm, 380 nm, etc.) (that is, the emission intensity depends on the wavelength of the irradiated ultraviolet rays). Can be used if it has the characteristics (changes).

[Photographing means 12]
The photographing means 12 is a camera (preferably a CCD color camera) capable of photographing the connected state of the cable 1 and / and the core wire 2 to which the color code 3 is attached.

[Ultraviolet irradiation means 14]
The ultraviolet irradiation means 14 is a light capable of irradiating ultraviolet rays having a predetermined wavelength, and is a black light that visualizes by irradiating invisible ink such as black light ink with ultraviolet rays (UV-A). In addition, ultraviolet fluorescent lamps, ultraviolet LEDs, etc. can be applied.

[Database 16]
The database 16 can be applied to a hard disk, a magnetic tape, a semiconductor scale, or the like in which the above-mentioned cable information, core wire information, system information, and the like are managed and stored.

[Reading means 20]
The reading means 20 is a mobile terminal including a reading unit 202, an input unit 204, an image processing unit 206, a control unit 208, a display unit 210, a data processing unit 212, and a data storage unit 214.
The reading unit 202 acquires a photographed image (an image in which the cable and / or the core wire is connected) from the photographing means 12.
The input unit 204 is a keyboard, touch panel, or the like for the operator to input various data such as a work day. The input data is given to the image processing unit 206 or the display unit 210.

The image processing unit 206 acquires image data from the reading unit 202 and various data from the input unit 204 to perform image processing. The image processing unit 206 extracts the brightness of the captured image and determines whether or not the threshold value is satisfied. Then, the image processing unit 206 determines whether or not the identified cable and / and the core wire match the connection position of the design drawing or the connection diagram.
Based on the image information of the image processing unit 206, the control unit 208 gives a control signal to the ultraviolet irradiation means 14 so that the brightness of the captured image satisfies the threshold value or becomes larger than the threshold value, for example.
The display unit 210 is a liquid crystal monitor that displays a data-processed image.
The data processing unit 212 performs data processing on the image processed by the image processing unit 206.
The data storage unit 214 acquires cable information, core wire information, system information, and the like from the database 16, and stores the image processed by the data processing unit 212.

[Color code issuing means 30]
The color code issuing means 30 is a personal computer including a reading unit 302, an input unit 304, a processing unit 306, and an output unit 308.
The reading unit 302 has acquired various data such as cable information, core wire information, and system information of the database 16.
The input unit 304 is a keyboard, a touch panel, or the like for inputting various data.
The processing unit 306 determines the color of the color code 3 of the cable and / and the core wire and the wavelength of the ultraviolet irradiation means 14 based on various data of the reading unit 302 and the input data of the input unit 304.
The output unit 308 gives the processed color code to the color code attaching means 40.
Such a color code issuing means 30 issues a color code that can individually identify the cable and / and the core wire based on the cable information, the core wire information, and the system information.

[Color code attaching means 40]
The color code attaching means 40 includes a reading unit 402, a control unit 404, and an output unit 406, and attaches the color code to the cable and / or the core wire.
FIG. 3 is an explanatory diagram of the color code attaching means 40. As shown in the figure, the color code attaching means 40 includes a color code attaching portion 42 for acquiring a cable from the cable roll 41 and a cable coating removing portion 44 for the cable to which the color code 3 is attached. The color code attachment unit 42 includes the above-mentioned reading unit 402, control unit 404, and output unit 406, and generates a color code 3 by attaching or printing a sticker on the surface of the cable 1. The cable coating removing portion 44 includes a coating cutting lever 44a for moving the coating cutting teeth having a plurality of core wire sizes in the vertical direction, and a coating cutting lever 44b for moving the coating cutting teeth along the axis of the cable. ..

According to such a color code attaching means 40, the color code 3 attached to the cable and / and the core wire can be easily generated, and the terminal work of the cable 1 to which the color code 3 is attached can be easily performed.
When a color cord is attached to each core wire from a bundle of core wires from which the cable coating has been removed, the above-mentioned attachment means for the cable is similarly attached using the scaled-down color cord attachment means for the core wire.

[Action]
The operation of the cable connection confirmation system of the present invention based on the above configuration will be described below.
FIG. 4 is a processing flow chart of the cable work of the present invention. First, a new construction work will be described as an example.
For cable work in new construction, a work group in charge of the work is selected from a plurality of pre-registered work groups (step 101). The end treatment of the cable is performed (step 102). In this process, the color code issuing means 30 and the color code attaching means 40 perform end work of the cable 1 and / and the core wire 2 to which the color code 3 is attached.
Then, the cable laying work is performed (step 103).
Next, color code recognition is performed (step 104), and the connection status is confirmed (step 105). After that, a work report is created (step 106), and the work is completed.

FIG. 5 is a processing flow chart of color code recognition and connection confirmation of new construction work.
The ultraviolet irradiation means 14 is activated to irradiate ultraviolet rays having a predetermined wavelength (step 401). The image captured by the photographing means 12 is acquired by the reading unit 202, and the brightness is extracted by the image processing unit 206 (step 402).
The image processing unit 206 determines whether or not the extracted brightness satisfies the threshold value, and in the present embodiment, for example, whether or not it is larger than the threshold value (step 403).
When the brightness is smaller than the threshold value (NO), the control unit 208 sends a control signal for increasing the brightness to the ultraviolet irradiation means 14 in order to correct the brightness (step 404).
When the brightness is larger than the threshold value (YES), color code recognition is performed (step 405).

FIG. 6 is a processing flow chart for color code recognition.
An image of the connection state of the cable and / and the core wire to which the color cord is attached is acquired (step 501).
The background color in the captured image is deleted, and the area of the color code is extracted (step 502).
The angle / distortion of the extracted area is corrected (step 503).
The color area of the color code is extracted again (step 504).
The color code is thinned (step 505).
The hue of the color code is calculated (step 506).
The order of the color code is read (step 507).
Each character symbol conversion of the color code is performed (step 508).
The color code of the cable and / and the core wire is recognized by the above steps.
The image processing unit 206 determines whether or not the connection state of the cable and / or the core wire to which the color code 3 is attached is the same as the design drawing information (step 406). If the connection state is the same as the design drawing information, the work is completed. On the other hand, if they are different, the location is specified (step 407).
The operator manually confirms different parts (step 408).
In order to confirm the connection state after the correction, the process returns to step 405 in order to recognize the color code again.
The work of steps 405 to 406 is repeated until the connection state becomes the same as the design drawing.

Next, the periodic inspection of the connection points to which the color code has already been attached will be described below. Periodic inspection includes disconnection / restoration work or repair / modification / renewal work.
For the disconnection / restoration work in Fig. 4, the work group in charge of the work is selected from a plurality of pre-registered work groups (step 201), and the current connection status of the cable for performing the disconnection / restoration work. The color code is recognized and a wiring diagram is drawn (step 202). Next, a disconnection operation for removing the cable from the terminal block is performed (step 203), and then a restoration operation for returning the cable to the original connection state is performed (step 204). Then, the color code is re-recognized (step 205), and while referring to the wiring diagram, whether or not the cable is connected to an appropriate position of the terminal block and the connection status are confirmed (step 206). After that, a report of the above work is created (step 0207), and the work is completed.

Further, for repair / modification / renewal work, a working group is selected in the same manner as above (step 301). Cable end treatment (peeling, end treatment) is performed (step 302). Recognize the color code for the current wiring status of the cable and draw a wiring diagram (step 303). The old cable is removed (step 304), and the new cable is laid (step 305). Then, the color code is re-recognized (step 306), and the connection status is confirmed while referring to the connection diagram (step 307). After that, a work report is created (step 308), and the work is completed.

Next, the color code recognition of this construction will be described below. FIG. 7 is a processing flow chart of color code recognition during periodic inspection work.
From step 601 to step 605, the same work as in steps 401 to 405 described above is performed.
Next, the accuracy of the work is determined (step 606). The accuracy of the work of this embodiment is that the color code of the cable and the connection end before and after the work (for example, before and after disconnection / restoration, repair, etc.), in other words, the connection point of the terminal block is collated.
It is determined whether or not it is the same as the design drawing (step 607). If the connection state is the same as the design drawing information, the work is completed. On the other hand, if they are different, the location is specified (step 608).
The operator manually confirms different parts (step 609).
After the confirmation work, it is determined whether or not the correction is necessary (step 610). If you don't need it, you're done. on the other hand. If necessary, the manual confirmation work of the operator is performed (step 611). After that, the work is completed.

[Modification example]
FIG. 8 is an explanatory diagram of color codes of ultraviolet irradiation having different main wavelengths. When it is difficult to distinguish the colors of the color code 3 shown in FIG. 2, ultraviolet rays having different main wavelengths, for example, 360 hues of 365 nm, 370 nm, 375 nm, and 380 nm are divided into four equal parts and assigned in a total of 16 equal parts. You can create a color code.
The cable work using the color code that emits light by irradiation with ultraviolet rays having different main wavelengths is basically the same work as in FIG.
FIG. 9 is a processing flow chart of color code recognition and connection confirmation of the new construction of the modified example.
From step 701 to step 704, the same work as in steps 401 to 404 described above is performed.
The wavelength of the ultraviolet irradiation means 14 is switched to irradiate a plurality of ultraviolet rays having different main wavelengths (step 705).
From step 706 to step 709, the same operations as in steps 405 to 408 described above are performed.

FIG. 10 is a processing flow chart of color code recognition and connection confirmation for periodic inspection of a modified example.
From step 801 to step 804, the same work as in steps 601 to 604 described above is performed.
The wavelength of the ultraviolet irradiation means 14 is switched to irradiate a plurality of ultraviolet rays having different main wavelengths (step 805).
From step 806 to step 812, the same work as in steps 605 to 611 described above is performed.

FIG. 11 is an explanatory diagram of a color code of a modified example and a processing flow chart of color code recognition.
The color code of the modified example attached to the cable and / and the core wire is 1 to 3 lines (Note that the core wire is defined as a "row" in the area divided in the circumferential direction, and the cable is "row" for each band that goes around in the circumferential direction. It is composed of). The core wire shown in the figure shows the color code of 2 lines, 1 line, 3 lines vertically, and 3 lines vertically in order from the top, and the cable shows the color code of 2 lines.
The color code of one line can be recognized by the color code recognition shown in FIG.
The two-line color code is thinned and then recognized by its length.
The three-line color code recognizes the code according to the length of the area and the order of the area.
In the color code recognition of such a modified example, first thinning is performed (step 901).
Next, the sequence scheme is identified (step 901).
It is determined whether or not the color code is one line (step 903). If the color code is one line, the color code recognition shown in FIG. 6 is performed (step 904).

On the other hand, if the color code is not one line, it is determined whether or not the color code is one line (step 905). If the color code is two lines, the length of the thin line is calculated (step 906). Then, the recognition order is calculated (step 907), and the color code recognition shown in FIG. 6 is performed (step 904).
On the other hand, if the color code is not two lines, the length of the thin line is calculated (step 909). Next, the area is calculated (step 909). Then, the recognition order is calculated (step 910), and the color code recognition shown in FIG. 6 is performed (step 904).
According to such a connection confirmation system of the present invention, the color of the cable and / and the core wire can be identified regardless of the site environment such as a dark place, and the connection state is determined by image processing of the captured image. The same wiring work as the design drawing or wiring drawing can be performed, human error can be prevented, and the working time can be shortened.

1 ……… Cable, 2 ……… Core wire, 3 ……… Color code, 10 ……… Connection confirmation system, 12 ……… Shooting means, 14 ……… Ultraviolet irradiation means, 16 ……… Database, 20… …… Reading means, 202 ………… Reading unit, 204 ………… Input unit, 206 ………… Image processing unit, 208 ………… Control unit, 210 ………… Display unit, 212 ………… Data processing unit, 214 ……… Data storage unit, 30 ……… Color code issuing means, 302 ……… Reading unit, 304 ……… Input unit, 306 ……… Processing unit, 308 ……… Output unit, 40 ……… Color code Mounting means, 402 ……… Reading unit, 404 ……… Control unit, 406 ……… Output unit, 42 ……… Color code mounting unit, 44 ……… Cable film removing unit.

Claims (5)

A color code that is attached to multiple cables and a core wire from which the cable coating has been removed so that they can be individually identified and emit light when irradiated with ultraviolet rays.
An ultraviolet irradiation means for irradiating the color code with ultraviolet rays,
A photographing means for photographing the color code irradiated with ultraviolet rays, and
A reading means for identifying the cable and the core wire from which the cable coating has been removed by reading the color code in the captured image, and
A connection confirmation system characterized by being equipped with. The ultraviolet irradiation means can irradiate a plurality of ultraviolet rays having different main wavelengths.
The connection confirmation system according to claim 1, wherein the color code shifts the color development range by irradiation with a plurality of ultraviolet rays having different main wavelengths. The reading means is provided with an image processing unit for determining whether or not the identified cable and the core wire from which the cable coating has been removed coincide with the connection position in the design drawing or the connection diagram. The connection confirmation system described in 2. The connection confirmation system according to claim 3, wherein the image processing unit extracts the brightness and determines whether or not the threshold value is satisfied before identifying the cable and the core wire from which the cable coating has been removed. .. A color that creates the color code that can individually identify the cable and the core wire from which the cable coating has been removed based on the cable information, core wire information, and system information, and sets the ultraviolet wavelength at which the strongly emitting color range of the color code shifts. The connection confirmation system according to any one of claims 1 to 4, further comprising a code issuing means.