JP7768831B2 - Welding construction management system - Google Patents

Description

The present invention relates to a system for acquiring welding construction management data for impervious sheets laid on civil engineering and architectural structures, and in particular to a welding construction management system suitable for managing welding construction and welding temperatures at joints and repair areas of impervious sheets.

For example, it is well known that impervious sheets such as waterproof sheets and waterproof sheets are laid over targets such as industrial waste disposal sites to prevent wastewater from seeping underground and groundwater from welling up above the site (see Patent Document 1, etc.). Typically, the target has an area larger than the width of a single impervious sheet, so multiple impervious sheets are laid side by side on the target, and the seams between adjacent impervious sheets are welded together.

Japanese Patent Application Laid-Open No. 2006-198585

This type of liquid-impermeable sheet is prone to poor welding at the joints. Poor welding can lead to liquid leakage. Therefore, it is important to inspect the quality of welding at the joints. Furthermore, if damage is found in the installed liquid-impermeable sheet, the damaged area is repaired, for example, by covering it with a pad made of the same material as the liquid-impermeable sheet and welding it, but it is also important to inspect the quality of welding at the repaired area. It is also possible to obtain the welding temperature during welding to estimate the presence or absence of poor welding.
When managing the welding construction status using welding construction management data such as the quality of welding construction at joints and repair areas and the welding temperature, if it is not possible to identify which part of the installation target the data was obtained from, management will be hindered.
The present invention aims to identify which position on the installation target the acquired welding construction management data pertains to, and thereby make it possible to easily grasp the welding construction status at each position on the installation target.

In order to solve the above problems, the welding construction management system of the present invention includes a data acquisition unit that acquires welding construction management data for an impervious sheet laid on an installation target consisting of a civil engineering structure or an architectural structure;
a location information acquisition unit that acquires location information of the welding construction management data acquisition location from GPS (Global Positioning System) radio waves;
a storage unit for storing the welding construction management data and the position information;
The device is characterized by including a display unit that displays the stored welding construction management data in association with the position information.

the position information acquisition unit includes a coordinate calculation unit that calculates a map coordinate position corresponding to the acquired location on a map of the installation target based on specific position information on the map,
The display unit preferably includes a map display unit that displays the map, and a data display unit that displays the welding construction management data on the map in association with corresponding map coordinate positions.
Preferably, the present invention provides a data acquisition unit that acquires welding construction management data, which is data on the quality inspection of joints or damage repair pads in an impervious sheet laid on a laying target consisting of a civil engineering structure or an architectural structure, after welding construction of the pad;
a location information acquisition unit that acquires location information of the location where the welding construction management data is acquired from GPS radio waves;
a storage unit for storing the welding construction management data and the position information;
a display unit that displays the stored welding construction management data in association with the position information,
the position information acquisition unit includes a coordinate calculation unit that calculates a map coordinate position corresponding to the acquired location on a map of the installation target,
The display unit includes a map display unit that displays the map, and a data display unit that links the welding construction management data with corresponding map coordinate positions and displays them on the map,
the coordinate calculation unit converts the acquired position information in a GPS output format of the acquired location into the map coordinate position based on specific position information in a GPS output format about an actual position corresponding to the specific position on the map;
the storage unit stores the converted map coordinate position;
The data display unit performs the linking using the stored map coordinate positions.

This invention makes it possible to reliably and easily identify the position on the installation target for which acquired welding construction management data pertains. This in turn makes it easy to grasp the welding construction status at each position on the installation target.

FIG. 1 shows a first embodiment of the present invention and is a diagram showing the configuration of a welding construction management system for inspecting the quality of welded joints of impervious sheets laid in an industrial waste disposal site, which is an example of an installation target. FIG. 2 is a block diagram showing an example of a data structure of the storage unit of the welding construction management system. FIG. 3 is a front view showing an example of a display on a management screen of the welding construction management system. FIG. 4 shows a second embodiment of the present invention, and is a diagram showing the configuration of a welding construction management system for inspecting the quality of repair welded portions of impervious sheets laid in an industrial waste disposal site, which is an example of an installation target. FIG. 5 is a front view showing an example of a display on a management screen of the welding construction management system according to the second embodiment. FIG. 6 shows a third embodiment of the present invention, and is a diagram showing the configuration of a welding construction management system for managing the welding temperature when welding seams of impervious sheets at industrial waste disposal sites, which is an example of an installation target. FIG. 7 is a front view showing an example of a display on a management screen of the welding construction management system according to the third embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First Embodiment (FIGS. 1 to 3)
1 is an explanatory diagram showing how to inspect the quality of welding of a seam 2c of an impervious sheet 2 laid on an installation target 1, which may be, for example, an industrial waste disposal site (civil engineering structure). The installation target is not limited to an industrial waste disposal site, but may also be a riverbed, a reservoir, a tunnel or other civil engineering structure that can receive GPS radio waves, as long as it is capable of receiving GPS radio waves from a GPS satellite, and is further not limited to a civil engineering structure, but may also be an architectural structure such as a building roof.

Impervious sheets 2 are used as impervious sheets 2 for industrial waste disposal sites. Materials for the impervious sheets include rubber, polyvinyl chloride, polyolefin, and other resins, as long as they prevent liquids from industrial waste and other sources from seeping into the ground and groundwater from seeping into the industrial waste disposal site. Depending on the installation target, waterproof sheets such as EVA sheets may also be used. Multiple impervious sheets 2 are laid side by side on the installation target 1 (see Figure 3). The seams 2c between adjacent impervious sheets 2 are joined by welding. The seams 2c are distributed throughout the installation target 1 (see Figure 3). As shown in Figure 1, for example, two parallel welded portions 2d are formed at the seams 2c. A space 2e is defined between these welded portions 2d. The quality of the welded portions 2d is managed by inspecting the sealing condition of the space 2e between the welded portions using the welding construction management system 3.

As shown in FIG. 1, the welding construction management system 3 includes an air pressure line 10 (inspection pressure line), a signal processing circuit 20, and a smartphone 30. Preferably, these system components 10-30 are housed in a portable housing 4. The air pressure line 10 is composed of a gas tube or the like and is retractable from the housing 4. An inspection pressure supply unit 12 is connected to the proximal end (upper end in FIG. 1) of the air pressure line 10. Although not shown in detail, the inspection pressure supply unit 12 includes an air pressure (gas pressure) source such as a compressor, a pressure control valve, an on-off valve, etc. Air pressure (inspection pressure) set by the pressure control valve is supplied to the air pressure line 10. A probe 13 is provided at the tip (lower end in FIG. 1) of the air pressure line 10.

A signal processing circuit 20 is connected to the pneumatic path 10. Although not shown in detail, the signal processing circuit 20 includes a piezoelectric element that generates an electric signal (voltage or current signal) corresponding to the gas pressure in the pneumatic path 10, and an A/D converter that digitally converts the electric signal and outputs it.
The air pressure path 10 and the signal processing circuit 20 constitute a data acquisition unit 3a that acquires welding construction management data (good/bad inspection data) for the joint 2c.

1 , a smartphone 30 is wired connected to the signal processing circuit 20 via a cable 25. The smartphone 30 includes a CPU 31, a GPS receiving unit 33, a storage unit 34, a display 35, and a communication unit 36.
It should be noted that instead of the smartphone 30, a portable small computer other than the smartphone 30, such as a tablet or a laptop computer, may be used.

The CPU 31 executes a program 37 (described later) and various other programs in the smartphone 30 .
The GPS receiver 33 receives GPS radio waves from GPS satellites, thereby obtaining the current location of the smartphone 30. While the welding construction management data is being acquired, information on the actual location of the acquisition point (hereinafter referred to as "actual location") is also obtained.
Strictly speaking, the smartphone 30 equipped with the GPS receiver 33 and the probe 13 located at the acquisition location are several centimeters to several tens of centimeters apart, but considering the size of the installation target and the accuracy of the GPS, this distance is within the allowable error, and it is safe to assume that the GPS location information of the smartphone 30 indicates the acquisition location of the welding construction management data.
The smartphone 30 constitutes a location information acquisition unit that acquires, from GPS radio waves, information on the location where the welding construction management data was acquired.

As shown in FIG. 2, the storage unit 34 stores a program 37 and data 38 for managing welding work.
The program 37 includes a map display program 37a for displaying a map 40 (Figure 3) of the installation target 1 on the display 35, a coordinate calculation program 37b for calculating a map coordinate position 41 corresponding to the actual position of the acquired location on the map 40, and a data display program 37c for linking the acquired welding construction management data to the corresponding map coordinate position (position information) and displaying it on the map.
The smartphone 30 comprises a display unit that displays the stored welding construction management data in association with the position information, and a coordinate calculation unit that calculates a map coordinate position 41. The smartphone 30 further comprises a map display unit that displays a map 40, and a data display unit that displays the welding construction management data on the map 40 in association with the corresponding map coordinate position.

As shown in Figure 2, the data 38 includes image data 38a of a map 40 of the installation target 1, specific location information 38b necessary for calculating the map coordinate position 41, and the like. Furthermore, the memory unit 34 has a storage area for welding construction management data 38c acquired by the data acquisition unit 3a and location information 38e of the acquired location.

The map image data 38a is preferably raster data, but may also be vector data. The map 40 is a two-dimensional map based on planar (xy) coordinates, but may also be a three-dimensional map including a z coordinate in the height direction. The map 40 is created, for example, using an allocation diagram of the impervious sheet 2 in the installation target 1.

The specific position information 38b is information on actual specific positions corresponding to the specific positions a and b on the map 40. The actual specific positions are not limited to being inside the installation target, but may be outside the installation target. Preferably, the information on the actual specific positions conforms to the output format of the GPS function of a smartphone. The required number of specific positions a and b on the two-dimensional map 40 is at least two. In the case of a raster format, each specific position a and b is represented by an x-y coordinate system, with the lower left corner of the map image being (0,0), for example.
If the map 40 is three-dimensional data, the minimum required number of specific positions is three.

As shown in FIG. 1, the smartphone 30 is capable of communicating with other PCs such as a management PC 50 via a public communication network 8 such as the Internet.
The data of the smartphone 30 is transferred to the management PC 50 .
Although detailed illustration is omitted, the management PC 50 has the same programs and data as the smartphone 30 .

The welding construction management system 1 is used as follows.
<Welding construction management data acquisition process>
The housing 4 is placed near the inspection point at the seam 2c, and an air pressure line 10 extends from it to connect the probe 13 to the inter-weld space 2e.
Next, the on-off valve of the inspection pressure supply unit 12 is opened to introduce a predetermined amount of air pressure (inspection pressure) into the inter-welded portion space 2e from the air pressure path 10. Thereafter, the on-off valve is closed.
If the welds 2d are good, the internal pressure of the spaces 2e between the welds will be maintained at the test pressure. If the welds 2d are bad, air will leak from the welds, causing the internal pressure of the spaces 2e between the welds to be lower than the test pressure.

The internal pressure value (welding construction management data) of the space 2 e between the welded portions is acquired by the data acquisition unit 3 a. Specifically, the internal pressure of the space 2 e between the welded portions is applied to a piezoelectric element of the signal processing circuit 20 via the air pressure path 10, thereby generating an electric signal corresponding to the magnitude of the internal pressure. The electric signal is then converted into a digital signal by an A/D converter and output to the smartphone 30.
The CPU 31 of the smartphone 30 stores the acquired internal pressure value, i.e., the welding construction management data 38c, together with time information in the storage unit 34. The data acquisition time is, for example, several seconds to several minutes.

Furthermore, the CPU 31 compares the acquired internal pressure value with a pass/fail judgment threshold, and if the internal pressure value does not fall below the threshold, judges the welding construction state of the inspection point to be "good," and if the internal pressure value falls below the threshold, judges the welding construction state of the inspection point to be "bad." The judgment result is also stored in the memory unit 34 as part of the welding construction management data 38c.
The determination step may be performed during the display step described below.
Alternatively, only the pass/fail judgment result may be stored as the welding construction management data 38c, and the internal pressure value may not be stored.

<Actual location information acquisition process>
In parallel with the process of acquiring the welding construction management data, the CPU 31 of the smartphone 30 acquires the current position of the smartphone itself and therefore the actual position information 38d of the location where the welding construction management data was acquired using the GPS receiving unit 33, and stores this information in the memory unit 34 together with the acquisition time.
Since the smartphone 30 automatically acquires the location information, the worker does not need to manually input the location information each time welding construction management data is acquired.

<Map coordinate position calculation process>
Furthermore, the CPU 31 starts the coordinate calculation program 37b, reads the specific position information 38b from the storage unit 34, and applies the specific position information 38b and the real position information 38d to a predetermined calculation formula to calculate a map coordinate position 41 corresponding to the real position of the acquired location. The obtained map coordinate position 41 is linked to the corresponding real position information 38d and the acquisition time, and is stored in the storage unit 34.

The actual position information 38d and the map coordinate position 41 constitute the position information 38e of the location where the welding construction management data is acquired.
It is also possible to store only the map coordinate position 41 in the storage unit 34 as the position information of the location from which the welding construction management data is obtained, without storing the actual position information 38d in the storage unit 34.
The calculation step of the map coordinate position 41 may be performed in the display step described later. In this case, of the real position information 38d and the map coordinate position 41, only the real position information 38d may be stored in the storage unit 34.

In the same manner as described above, welding construction management data 38c and position information 38e for the joints 2c are acquired at multiple locations on the installation target 1, and are stored in the memory unit 34.
Preferably, the data stored in the smartphone 30 is transferred to the management PC 50 as needed. The management PC 50 may have the same functions as the smartphone 30.

<Display process>
Thereafter, the work manager or worker displays a welding construction management menu (not shown) on the display 35 of the smartphone 30 and selects the welding construction status display command from the menu. In response to this, the CPU 31 reads the stored information from the memory unit 34 and creates a joint quality management screen (Figure 3) that links the welding construction management data 38c of the joint 2c with the position information 38e, i.e., a welding construction status display, and displays it on the display 35.

<Map display process>
Specifically, the map display program 37a reads out the map image data 38a from the storage unit 34, and displays a map 40 of the installation target 1, as shown in FIG.
In parallel, the data display program 37c reads out the welding construction management data 38c and the location information 38e including the map coordinate positions 41 from the memory unit 34, and displays the welding construction management data 38c corresponding to each map coordinate position 41 at each map coordinate position 41 on the map 40 on the display 35.

For example, as shown in Figure 3, if the pass/fail judgment in the welding construction management data 38c is "good," a cool-colored indicator 42 such as blue is displayed at the corresponding map coordinate position 41. If the judgment is "poor," a warm-colored indicator 43 such as red is displayed at the corresponding map coordinate position 41. This allows the work manager or worker to visually grasp at a glance the pass/fail status and distribution of pass/fail of the welding construction of the joints 2c at each location on the installation target 1.

More preferably, the pop-up display 44 may be linked to the map coordinate location 41, and detailed welding construction management data, including the inspection time and detected pressure value for the corresponding inspection point, may be displayed within the pop-up display 44. When the map coordinate location 41 on the map 40 is selected, the pop-up display 44 may be displayed. This allows the work manager or worker to easily grasp the details of the welding construction status of the joints 2c at each location on the installation target 1. By displaying the test data on the quality of the welding construction on a map, useful information for construction management can be provided.

Next, another embodiment of the present invention will be described. In the following embodiments, the same components as those already described will be denoted by the same reference numerals in the drawings and the description thereof will be omitted.
Second Embodiment (FIGS. 4 and 5)
As shown in Figure 4, the second embodiment of the present invention relates to treatment when a damaged portion 5, such as a hole, is found in a liquid-impermeable sheet 2 laid on an industrial waste disposal site or other installation target 1. The damaged portion 5 is covered with a pad 6 made of the same material as the liquid-impermeable sheet 2, for example. The peripheral portion of the pad 6 is welded to the liquid-impermeable sheet 2 to repair the damaged portion 5, and a repaired portion 7 is formed on the liquid-impermeable sheet 2. A welded portion 7b is formed between the peripheral portion of the pad 6 and the liquid-impermeable sheet 2.

In the second embodiment, the quality of the welding of the pad 6 in the repaired portion of the damaged portion 5, i.e., the quality of the welded portion 6b, is inspected using a welding construction management system 3B. The welding construction management system 3B according to the second embodiment includes a vacuum pressure line 60 (inspection pressure line), a signal processing circuit 20, and a smartphone 30. The vacuum pressure line 60 is composed of a vacuum pressure gas tube or the like and is retractable from the housing 4. An inspection pressure supply unit 62 is connected to the proximal end (upper end in Figure 4) of the vacuum pressure line 60. Although not shown in detail, the inspection pressure supply unit 62 includes a negative pressure source such as a vacuum pump, a pressure control valve, an on-off valve, etc. A vacuum pressure (inspection pressure) set by the pressure control valve is supplied to the vacuum pressure line 60. A closing jig 63 is connected to the distal end (lower end in Figure 4) of the vacuum pressure line 60 via a connector 64.

The closing jig 63 is formed in the shape of a dome-shaped (semispherical) container, for example. There are no particular limitations on the material of the closing jig 63, and examples include rubber, resin, and metal. The closing jig 63 does not need to be transparent. The shape of the closing jig 63 is not limited to a dome shape, and it may also be bellows-shaped.

The signal processing circuit 20 is connected to the vacuum pressure path 60. A release valve (not shown) is preferably provided as a safety valve at the connection portion of the vacuum pressure path 60 with the signal processing circuit 20.
A smartphone 30 is connected to the signal processing circuit 20 .
The configurations of the signal processing circuit 20 and the smartphone 30 are the same as those in the first embodiment.

When inspecting a repaired area using the welding construction management system 3B, a closing jig 63 is placed over the repaired area 7 to be inspected. By driving the vacuum pump (not shown) of the inspection pressure supply unit 62 and opening the on-off valve (not shown), the gas inside the closing jig 63 is evacuated via the vacuum pressure path 60. This causes the internal pressure of the closing jig 63 to reach a predetermined inspection pressure that is lower than atmospheric pressure (negative pressure). The on-off valve is then closed.

If the welded portion 7b of the repaired portion 7 is in good condition, the outside air will not enter the negative pressure closing jig 63 from the repaired portion 7, and the internal pressure of the closing jig 63 will be maintained at the inspection pressure.
If the welded portion 7b is defective, outside air will enter the negative pressure closing jig 63 from the repaired portion 7, and the internal pressure of the closing jig 63 will become closer to atmospheric pressure than the inspection pressure (negative pressure).

The internal pressure value (welding construction management data) of the closing jig 63 is acquired by the data acquisition unit 3a and stored in the memory unit 34 of the smartphone 30. Similarly to the welding construction management system 3 of the first embodiment, the smartphone 30 acquires and stores location information 38e, and in response to a display command, creates and displays a welding construction status screen ( FIG. 5 ) linking the welding construction management data 38c to the location information 38e. As shown in FIG. 5 , the welding construction status screen in the welding construction management system 3B of the second embodiment is a "repair quality management screen" that displays the quality of the repaired portion 7 of the installation target 1. This allows the work manager or worker to visually grasp the quality of the repair construction of the installation target 1 and the location or distribution of the repaired portion 7 at a glance.
Although omitted in Figure 5, a pop-up display 44 (see Figure 3) showing the detailed inspection status of each repair part 7 may also be displayed in association with the repair location on the repair pass/fail management screen of the second embodiment.

Third Embodiment (FIGS. 6 and 7)
As shown in Figure 6, a welding construction management system 3C according to a third embodiment of the present invention manages the welding conditions, such as the welding temperature, of a welding machine 70 during the welding process of the seam 2c of the liquid-impermeable sheet 2. The welding machine 70 has a pair of opposing rollers 72 and a heater 73. The ends of two adjacent liquid-impermeable sheets 2 to be welded are overlapped one above the other and clamped between the pair of rollers 72. A motor (not shown) is connected to each roller 72.

A heater 73 is provided immediately ahead (to the left in Figure 6) of the roller 72 in the forward direction of the welding machine 70 (the direction of the white arrow in Figure 6). The heater 73 is interposed between the ends of the two liquid-impermeable sheets 2. The heater 73 is provided with a welding thermometer 74, such as a thermocouple. The welding temperature produced by the heater 73 is detected by the welding thermometer 74.

Furthermore, the welding machine 70 is provided with a GPS receiving section 75 that receives GPS radio waves.
The welding thermometer 74 and the GPS receiving unit 75 are connected to a processing unit 76. The processing unit 76 is connected to the smartphone 30 via a cable 77.

<Welding process>
During welding, the heater 73 is heated and the pair of rollers 72 are rotated synchronously with each other. As a result, the ends of the two waterproof sheets 2 are heated by the heater 73 and then introduced between the pair of rollers 72 for welding. At the same time, the welding machine 70 is self-propelled along the extension direction of the seam 2c (the direction of the white arrow in Figure 6).

<Welding construction management data acquisition process>
During the welding process, the output temperature (welding temperature) of the heater 73 is detected continuously or at short intervals by a welding thermometer 74. The detected welding temperature information is used for feedback control of the heater output by a processing unit 76, and is also converted into digital data and output from the processing unit 76 to the smartphone 30. In the smartphone 30, the welding temperature information (welding construction management data) is stored in the memory unit 34 together with the time of reception.
When the output temperature (welding temperature) of the heater 73 falls below the normal range, the processing unit 76 may issue a warning by sounding an alarm buzzer or the like.

<Location information acquisition process>
Additionally, the current position of the welding machine 70 is measured by receiving GPS radio waves using the GPS receiver 75. Because the GPS receiver 75 is provided directly on the welding machine 70, accurate position information of the welding machine 70 can be obtained even if the welding machine 70 and the smartphone 30 are far apart. The position information is converted into digital data by the processing unit 76 and output to the smartphone 30. In the smartphone 30, the actual position information 38d of the acquisition location of the welding temperature information (welding construction management data) is stored in the memory unit 34 together with the acquisition time. Furthermore, in the smartphone 30, the map coordinate position 45 is calculated, linked to the actual position information 38d, and stored in the memory unit 34.
In this way, welding temperature information and position information 38d, 45 at the time of welding are acquired for each joint 2c of the installation target 1 and stored in the memory unit 34.

<Display process>
Thereafter, when the work manager or worker operates the smartphone 30 to issue a command to display the welding construction status, the CPU 31 receives this command and creates a welding temperature management screen (Figure 7) that links the welding temperature information and the location information 38d, 45 from the accumulated information in the memory unit 34, and displays it on the display 35.

<Map display process>
Specifically, as shown in FIG. 7 , a map 40 of the installation target 1 is displayed on the display 35, and welding temperature information (welding construction management data) at each map coordinate position 45 on the map 40 is displayed at that map coordinate position 45. The welding temperature information continues along the corresponding joint 2c on the map 40 to form a line marking 46. If the welding temperature information corresponding to each map coordinate position 45 on the line marking 46 is within the normal welding temperature range, that map coordinate position 45 is displayed in a cool color such as blue. If the map coordinate position is outside the normal welding temperature range, it is displayed in a warm color such as red. This allows the work manager or worker to visually grasp the welding temperature status of the joint 2c at each location on the installation target 1 at a glance.
If even one point on one line marking 46 is outside the normal welding temperature range, the entire line marking 46 may be displayed in a warm color such as red.

More preferably, the pop-up display 47 may be linked to the line marking 46, and detailed welding construction management data such as the start and end times of welding construction, the welding temperature at the start, and the welding temperature at the end, as well as information on whether the welding temperature is within the normal range, may be displayed within the pop-up display 47. When the line marking 46 on the map 40 is selected, the pop-up display 47 may be displayed. A pop-up display showing detailed welding construction management data for each map coordinate position 45 on the line marking 46 may be displayed. This allows the work manager or worker to easily grasp the details of the welding construction status of the joints 2c at each location on the installation target 1. Displaying the welding construction management data on a map provides useful information for construction management.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention.
For example, the display linking the welding construction management data with the location information is not limited to a map, but may be a table, matrix, or the like.
In the first embodiment, a GPS receiver may be provided in the probe 13 or in the inspection pressure path 10 nearby, and the GPS receiver may acquire position information of the seam 2c at the inspection point.
In the second embodiment, a GPS receiver may be provided in the closing jig 63 or in the inspection pressure path 60 near it, and the GPS receiver may acquire position information of the inspection point of the repair portion 7 for quality inspection.
In the third embodiment, the GPS function of the smartphone 30 may be used to acquire location information of the welding processing location.

The present invention can be applied, for example, to monitoring the quality of seam welding of waterproof sheets at industrial waste disposal sites.

1 Installation target 2 Impervious sheet 2c Joint 2d Welded portion 2e Space between welded portions 3 Welding construction management system 3a Data acquisition unit 3B, 3C Welding construction management system 5 Damaged portion 7 Repair portion 7b Welded portion 10 Air pressure line (inspection pressure line)
20 Signal processing circuit 30 Smartphone (location information acquisition unit, display unit, map display unit, data display unit)
33 GPS receiving unit 34 Memory unit 35 Display 37a Map display program 37b Coordinate calculation program 37c Data display program 38a Map image data 38b Specific position information 38c Welding construction management data 38d Actual position information 38e Position information a, b Specific position 40 Map 41 Map coordinate position 44 Pop-up display 45 Map coordinate position 47 Pop-up display 50 Management PC
60 Vacuum pressure line (inspection pressure line)
63 Closing jig 70 Welding machine 73 Heater 74 Welding thermometer 75 GPS receiver 76 Processing circuit

Claims (1)

A data acquisition unit that acquires welding construction management data, which is data on quality inspections of joints or damage repair pads in an impervious sheet laid on an installation target consisting of a civil engineering structure or an architectural structure, after welding construction;
a location information acquisition unit that acquires location information of the location where the welding construction management data is acquired from GPS radio waves;
a storage unit for storing the welding construction management data and the position information;
a display unit that displays the stored welding construction management data in association with the position information,
the position information acquisition unit includes a coordinate calculation unit that calculates a map coordinate position corresponding to the acquired location on a map of the installation target,
The display unit includes a map display unit that displays the map including the map coordinate positions , and a data display unit that links the welding construction management data with the corresponding map coordinate positions and displays them on the map,
the coordinate calculation unit converts the acquired position information in a GPS output format of the acquired location into the map coordinate position based on specific position information in a GPS output format about an actual position corresponding to the specific position on the map;
the storage unit stores the converted map coordinate position;
The data display unit performs the linking using the converted and stored map coordinate positions, and in response to the selection of the map coordinate position on the map, displays the welding construction management data for the acquisition location corresponding to the selected map coordinate position in a pop-up display on the screen .