JP2023183534A - Information acquisition device for reinforcing-bar in concrete by radar scan and operation method thereof - Google Patents

Abstract

To provide a reinforcing-bar arrangement information acquisition device which can obtain an image that correctly and clearly displays the arrangement state of reinforcing-bars even if alignment of a scan start position for each radar scan is performed fuzzily when grasping positions of a plurality of reinforcing-bars arranged in parallel to each other in concrete by performing the radar scan by an electromagnetic radar device, and provide an operation method thereof.SOLUTION: A reinforcing-bar arrangement information acquisition device for acquiring arrangement information of a plurality of reinforcing-bars arranged in parallel to each other by being buried in concrete C, comprises: a hyperbola information holding part 0361 which holds hyperbola information acquired by performing plural times of radar scans that pass through different paths in the orthogonal directions over the plurality of reinforcing-bars; a hyperbola information synchronization unit 0362 which synchronizes the repetition period of the reflection intensity of the held hyperbola information by the plural times of radar scans that pass through different paths; and an arrangement information generation unit 0363 which generates arrangement information of the reinforcing-bars on the basis of the synchronized hyperbola information obtained for each of the different paths.SELECTED DRAWING: Figure 3D

Description

The present invention relates to an apparatus for obtaining information on reinforcing bars in concrete using radar scanning, which is used when obtaining information on the arrangement of reinforcing bars buried inside concrete using an electromagnetic wave radar for internal exploration of concrete, and an operating method thereof. Note that the reinforcing bars of the present invention include both reinforcing bars with a circular cross section called round steel bars and reinforcing bars with uneven surfaces called deformed reinforcing bars, but in this specification, for convenience, they are treated as round steel bars with a circular cross section. That's it.

In recent years, reinforcement work has been carried out on many reinforced concrete structures such as buildings, bridges, and nuclear power plant buildings as a countermeasure against deterioration and as a preparation for large earthquakes that are expected to occur in the near future. When carrying out this reinforcement work, it is necessary to obtain information such as the arrangement of reinforcing bars buried in the concrete of the reinforced concrete structure.

Conventionally, as a method for acquiring information such as the arrangement state of reinforcing bars buried in a reinforced concrete structure, for example, the reinforcement arrangement state and cover measurement in a concrete structure by a non-destructive test described in Non-Patent Document 1 has been used. There is a way.
This non-destructive test method for measuring the reinforcing condition and cover in a concrete structure uses a cart-shaped electromagnetic wave radar device for exploring the inside of concrete. Information on the arrangement state of buried reinforcing bars is obtained as follows.

First, as shown in the plan view of the floor in Fig. 1A, the Mark the reference line and Y-axis reference line.

Next, as shown in FIG. 1B, a plurality of X-axis direction scanning lines 0111 parallel to the X-axis reference line are marked on the floor surface 0100, and a plurality of Y-axis direction scanning lines 0112 parallel to the Y-axis reference line are marked. Mark. That is, X-axis scanning lines 0111 and Y-axis scanning lines 0112 are marked on the floor surface 0100 in a grid pattern.

Then, as shown in FIG. 1C, radar scanning is performed by sequentially moving the electromagnetic wave radar device along the X-axis scanning line 0111 and the Y-axis scanning line 0112 marked on the floor surface 0100. The reinforcing bar passing position is measured based on the intensity of the electromagnetic wave (reflected wave) from the electromagnetic wave radar reflected by the reinforcing bar (in Figure 1C, the ○ marks are the reinforcing bar passing positions in the Y-axis direction, and the × marks are the reinforcing bar passing positions in the X-axis direction). The positions of the reinforcing bars in the X-axis direction (indicated by the dashed-dotted line in Figure 1C) and the reinforcing bars in the Y-axis direction (indicated by the dashed-dot line in Figure 1C) are marked on the floor surface 0100 by connecting these marked reinforcing bar passing positions. (shown).

Recently, in order to eliminate the time-consuming work of drawing the positions of reinforcing bars on the floor surface 0100, a technology has been developed to image the arrangement of reinforcing bars buried in the floor.
This technology for imaging the arrangement of reinforcing bars is based on the hyperbolar waveform ( As shown in the two-dimensional image (cross-sectional image) of FIG. This is a symmetrical chevron waveform displayed with the reinforcing bar 0130 measured based on strength as its peak. In other words, for example, as shown in the image diagram of radar scanning in FIG. Hyperbolar waveforms W1 to W3 are displayed when the electromagnetic wave radar device crosses directly above the reinforcing bar 0130 in the same Y-axis direction in each radar scan when the electromagnetic wave radar device is sequentially moved along 0110 to perform radar scanning. Based on the peak position of , it is possible to image the position of the reinforcing bar 0130 in the Y-axis direction buried in the floor. Note that the hyperbola waveform (information) will be described in detail later.

“Guidelines for measuring reinforcement arrangement and cover in concrete structures using non-destructive tests” prepared by the Technical Investigation Division, Minister’s Secretariat, Ministry of Land, Infrastructure, Transport and Tourism in October 2018.

In the above-mentioned conventional technology for imaging the arrangement state of reinforcing bars, the electromagnetic wave radar device incorporates a distance meter such as a linear encoder or a rotary encoder, and in each radar scan of a different route, the scan start position ST1, ST2, The distances from ST3 to positions p1, p2, and p3 (positions corresponding to each peak of the hyperbolar waveforms W1 to W3) directly above the reinforcing bar 0130 are measured, and the received intensity of the reflected wave is determined as a function of these distances. It is used for imaging the position of 0130.
However, in the technology of imaging the arrangement state of reinforcing bars, if the scanning start positions ST1, ST2, and ST3 do not match the starting line SL in each radar scan of different routes, as shown in FIG. The reinforcing bar 0130, which should be represented as a shape, ends up appearing wavy on the image. Therefore, in order to obtain an image that accurately and clearly displays the placement of reinforcing bars, it is necessary to carefully align the scanning start position each time the radar scan is performed by changing the route. There is a problem in that the more careful the position alignment, the more time and effort it takes, and solving this problem has been a conventional problem.

The present invention was made in order to solve the above-mentioned conventional problems, and when performing radar scanning using an electromagnetic wave radar device to image the positions of a plurality of reinforcing bars arranged in parallel in concrete, the radar Even if the positioning of the scan start position is fuzzy for each scan, it is possible to obtain an image that accurately and clearly displays the placement of reinforcing bars, and as a result, there is no need for careful positioning of the scan start position. It is an object of the present invention to provide a reinforcing bar placement information acquisition device and an operating method thereof, which can reduce radar scanning time and improve workability.

In order to solve the above problems, the present invention provides the following reinforcing bar placement information acquisition device.
That is, a first aspect of the present invention is a reinforcing bar placement information acquisition device that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel, A hyperbola information holding unit that holds hyperbola information obtained by performing multiple radar scans in orthogonal directions and passing through different routes, and repetition of the reflection intensity of the hyperbola information by the plurality of radar scans that pass through the different held paths. The structure includes a hyperbolar information synchronization section that synchronizes the cycle, and a placement information generation section that generates reinforcing bar placement information based on the hyperbolar information obtained for each of the different synchronized routes.

Further, a second aspect of the present invention is a starting point that receives an input for specifying a starting point for synchronizing based on repetition of the reflection intensity of hyperbolar information obtained by radar scanning of the different routes. The configuration further includes an input reception section.

Furthermore, a third aspect of the present invention further includes a starting point acquisition unit that obtains a starting point for the synchronization based on repetition of the reflection intensity of the hyperbolar information obtained by the radar scanning of the different routes. It is structured as follows.

Furthermore, in a fourth aspect of the present invention, the arrangement information generated by the arrangement information generation section is image information.

On the other hand, a fifth aspect of the present invention is a reinforcing bar placement information acquisition program that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel, A hyperbola information retention program that retains hyperbola information obtained by performing multiple radar scans passing through different routes in orthogonal directions, and a repetition period of the reflection intensity of the hyperbola information obtained for each of the different retained routes. and a placement information generation program that generates placement information of reinforcing bars based on the hyperbola information obtained for each of the synchronized different routes. The program uses recorded radar scans to obtain information on reinforcing steel in concrete.

Further, a sixth aspect of the present invention is a starting point that receives an input for specifying a starting point for synchronizing based on repetition of the reflection intensity of hyperbolar information obtained by radar scanning of the different routes. The configuration further includes an input reception program.

Furthermore, the seventh aspect of the present invention further includes a starting point acquisition program that obtains a starting point for the synchronization based on repetition of the reflection intensity of the hyperbolar information obtained by the radar scanning of the different routes. It is structured as follows.

Furthermore, in an eighth aspect of the present invention, the arrangement information generated by the arrangement information generation program is image information.

A ninth aspect of the present invention is an operation method of a reinforcing bar placement information acquisition device that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel. a hyperbolar information holding step of holding hyperbolar information obtained by performing a plurality of radar scans along different paths in orthogonal directions across the reinforcing bars, and a reflection intensity of the hyperbolar information obtained for each of the different paths held. acquisition of reinforcing steel information in concrete by radar scanning, comprising: a synchronization step for synchronizing the repetition period of the synchronized steps; and a placement information generation step for generating reinforcing steel placement information based on the hyperbora information obtained for each of the synchronized different routes. This is how the device operates.

Further, a tenth aspect of the present invention is a starting point that receives an input for specifying a starting point for synchronizing based on repetition of the reflection intensity of hyperbolar information obtained by radar scanning of the different routes. The configuration further includes an input receiving step.

Furthermore, the eleventh aspect of the present invention further includes a starting point obtaining step of obtaining a starting point for the synchronization based on repetition of the reflection intensity of the hyperbolar information obtained by the radar scanning of the different routes. The structure has the following features.

Furthermore, in a twelfth aspect of the present invention, the arrangement information generated in the arrangement information generation step is image information.

According to the present invention, when performing radar scanning using an electromagnetic wave radar device to image the positions of a plurality of reinforcing bars arranged in parallel in concrete, the positioning of the scanning start position for each radar scan is performed in a fuzzy manner. Also, it is possible to obtain an image that accurately and clearly displays the placement status of reinforcing bars, which eliminates the need for careful alignment of the scanning start position, reducing radar scanning time and improving work efficiency. It is possible to obtain very excellent effects.

FIG. 2 is a plan view of a floor that is a reinforced concrete structure for explaining a conventional method of acquiring information such as the arrangement state of reinforcing bars. FIG. 1B is a plan view of the floor shown in FIG. 1A with radar scanning lines drawn on the floor. FIG. 1B is a plan view of the floor with reinforcing bar positions obtained by performing radar scanning using the radar scanning line shown in FIG. 1B. It is a diagram simulating a two-dimensional image of hyperbola information obtained by radar scanning. FIG. 2 is an image diagram of radar scanning that collectively shows one reinforcing bar, the radar scanning direction for the reinforcing bar, and the radar reflection intensity. FIG. 2 is a diagram simulating an image in which reinforcing bars are displayed in a wavy manner obtained by a conventional method for obtaining information such as the arrangement state of reinforcing bars. Diagram to explain the hardware configuration Schematic configuration diagram of a device for acquiring reinforcing bar placement information in concrete by radar scanning according to Embodiment 1 FIG. 3 is a plan view of the floor for explaining how to set a start line for radar scanning. FIG. 3 is a partially enlarged plan view of the floor for explaining how to set a start line for radar scanning. FIG. 2 is a functional block diagram of a device for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 1. FIG. FIG. 2 is a schematic diagram showing the positional relationship between the electromagnetic radar device of the reinforcing bar placement information acquisition device in concrete and buried reinforcing bars during radar scanning in the first embodiment. FIG. 3 is a schematic diagram for explaining hyperbola information. FIG. 3 is an image diagram of radar scanning by an electromagnetic radar device of a reinforcing bar arrangement information acquisition device in concrete, collectively showing three reinforcing bars, radar scanning directions for those reinforcing bars, and radar reflection intensities. It is a diagram simulating a two-dimensional image showing hyperbola information acquired through three radar scans side by side. 3H is a diagram simulating image information showing the arrangement of reinforcing bars generated from the hyperbola information of FIG. 3H. FIG. 1 is a diagram illustrating an example of a hardware configuration of a device for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 1. FIG. 2 is a processing flowchart of the apparatus for acquiring reinforcing bar placement information in concrete using radar scanning according to the first embodiment. FIG. 2 is a functional block diagram of a device for acquiring reinforcing bar placement information in concrete using radar scanning according to a second embodiment. FIG. 3 is a diagram simulating a two-dimensional image showing hyperbola information acquired through three radar scans side by side. FIG. 7 is a plan view of a floor showing an example of acquiring reinforcing bar placement information by the reinforcing bar placement information acquisition device in concrete using radar scanning in Embodiment 2; FIG. 7 is a diagram illustrating an example of the hardware configuration of a device for acquiring reinforcing bar placement information in concrete using radar scanning according to a second embodiment. 7 is a processing flowchart of an apparatus for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 2. FIG. FIG. 7 is a functional block diagram of a device for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 3; FIG. 3 is a diagram simulating a two-dimensional image showing hyperbola information obtained by two radar scans side by side. 12 is a diagram illustrating an example of the hardware configuration of a device for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 3. FIG. 12 is a processing flowchart of an apparatus for acquiring reinforcing bar placement information in concrete using radar scanning in Embodiment 3.

Embodiments of the present invention will be described below. The mutual relationship between the embodiments and the claims is as follows. Embodiment 1 mainly relates to claims 1, 4, 5, 8, 9, and 12, Embodiment 2 mainly relates to claims 2, 6, and 10, and Embodiment 3 mainly relates to claims 3, 7, and 11. .
Note that the present invention is not limited to these embodiments in any way, and may be implemented in various forms without departing from the spirit thereof.

<About hardware that can constitute the present invention>
The present invention is an invention that basically utilizes an electronic computer, but it is also realized by software, hardware, and cooperation between software and hardware. The hardware that realizes all or part of each component of the present invention is comprised of the basic components of a computer, such as a CPU, memory, bus, input/output devices, various peripheral devices, and a user interface. Various peripheral devices include storage devices, interfaces for the Internet, devices such as the Internet, displays, keyboards, mice, speakers, cameras, videos, televisions, and various sensors (flow rate, etc.) for grasping the production status in laboratories or factories. Sensor, temperature sensor, weight sensor, liquid level sensor, infrared sensor, shipment number counting machine, packaging number counting machine, foreign object inspection equipment, defective product counting machine, radiation inspection equipment, surface condition inspection equipment, circuit inspection equipment, human sensor , worker work status understanding device (video, ID, PC workload, etc.), CD device, DVD device, Blu-ray device, USB memory, USB memory interface, removable hard disk, general hard disk, projector device , SSD, telephone, fax, copy machine, printing device, movie editing device, various sensor devices, etc.

Further, the system of the present invention does not necessarily need to be configured by one housing, but may be configured by connecting multiple housings through communication. Further, the communication may be LAN, WAN, Wifi (registered trademark), Bluetooth (registered trademark), infrared communication, or ultrasonic communication, and some of the communication may be installed across national borders. Furthermore, each of the plurality of cases may be operated by a different entity, or may be operated by one entity. The system of the present invention may be operated by a single entity or a plurality of entities. Further, in addition to the system of the present invention, the present invention can also be configured as a system including a terminal used by a third party, and a terminal used by another third party. Furthermore, these terminals may be installed across national borders. Furthermore, in addition to the system of the present invention and the above-mentioned terminals, devices used for registering related information of third parties and related persons, devices used for a database for recording registered contents, etc. are prepared. You can. These may be provided in the system of the present invention, or the system of the present invention may be configured to be provided outside the system of the present invention so that these information can be utilized.

As shown in FIG. 2, a computer includes a chipset, a CPU, a non-volatile memory, a main memory, various buses, a BIOS, various interfaces, a real-time clock, etc. configured on a motherboard. These operate in cooperation with the operating system, device drivers, various programs, etc. Various programs and various data constituting the present invention are configured to efficiently utilize these hardware resources to execute various processes.

≪Chip set≫
A "chip set" is a set of large-scale integrated circuits (LSIs) that are mounted on a computer's motherboard and have a bridge function that connects the CPU's external bus with the standard bus that connects memory and peripheral devices. be. There are cases where a two-chip set configuration is adopted and cases where a one-chip set configuration is adopted. A north bridge is provided on the side closer to the CPU and main memory, and a south bridge is provided on the side that is far away and interfaces with relatively low-speed external I/O.

(North Bridge)
The northbridge includes a CPU interface, memory controller, and graphics interface. Most of the functions of a conventional northbridge may be performed by the CPU. The north bridge is connected to the memory slot of the main memory via a memory bus, and is connected to the graphic card slot of the graphic card via a high-speed graphic bus (AGP, PCI Express).

(South Bridge)
The south bridge is connected to a PCI interface (PCI slot) via a PCI bus, and is responsible for I/O functions and sound functions with an ATA (SATA) interface, a USB interface, an Ethernet interface, etc. Incorporating circuits that support PS/2 ports, floppy disk drives, serial ports, parallel ports, and ISA buses that do not require or are impossible to operate at high speeds will hinder the speeding up of the chipset itself. Therefore, it may be separated from the south bridge chip and placed in another LSI called a super I/O chip. A bus is used to connect the CPU (MPU) with peripheral devices and various control units. The buses are connected by chipsets. The memory bus used for connection with the main memory may alternatively have a channel structure in order to increase speed. A serial bus or parallel bus can be used as the bus. Whereas a serial bus transfers data bit by bit, a parallel bus bundles the original data itself or multiple bits extracted from the original data and transmits them simultaneously over multiple communication paths. A dedicated line for the clock signal is provided in parallel with the data line to synchronize data demodulation on the receiving side. It is also used as a bus that connects the CPU (chip set) and external devices, and includes GPIB, IDE/(parallel) ATA, SCSI, and PCI. Since there is a limit to speeding up, the data line may be a serial bus in PCI Express, an improved version of PCI, and Serial ATA, an improved version of parallel ATA.

≪CPU≫
The CPU sequentially reads, interprets, and executes a sequence of instructions called a program on the main memory, and outputs information consisting of signals onto the main memory as well. The CPU functions as the center of calculation within the computer. Note that the CPU is composed of a CPU core part that is the center of calculations and its peripheral parts. Includes interfaces with bridges and connection buses, etc. Note that one CPU (chip) may include a plurality of CPU cores. Further, in addition to the CPU, processing may be performed by a graphic interface (GPU) or FPU.

≪Nonvolatile memory≫
(HDD)
The basic structure of a hard disk drive consists of a magnetic disk, a magnetic head, and an arm on which the magnetic head is mounted. As the external interface, SATAA (ATA in the past) can be adopted. A sophisticated controller, such as SCSI, is used to support communication between hard disk drives. For example, when copying a file to another hard drive, the controller can read sectors and transfer them to the other hard drive for writing. At this time, the memory of the host CPU is not accessed. Therefore, there is no need to increase the load on the CPU.
Note that as the nonvolatile memory, an SSD composed of "NAND flash" may be employed together with the HDD, or may be employed in place of the HDD.

≪Main memory≫
The CPU directly accesses and executes various programs on the main memory. The main memory is a volatile memory, and DRAM is used. The program on the main memory is expanded from the non-volatile memory onto the main memory in response to a program activation command. Thereafter, the CPU continues to execute the program according to various execution instructions and execution procedures within the program.

≪Operating System (OS)≫
The operating system is used to manage the resources on the computer so that they can be used by applications, to manage various device drivers, and to manage the computer itself, which is hardware. Small computers sometimes use firmware as the operating system.

≪Device driver≫
A device driver is a program that controls device hardware to make various devices attached to a computer available to users and applications via the operating system.

≪BIOS≫
The BIOS tells the CPU to carry out the steps to start up the computer's hardware and run the operating system, and is most typically the first piece of hardware that the CPU reads when it receives instructions to start up the computer. . The address of the operating system stored on the disk (non-volatile memory) is written here, and the operating system is sequentially loaded into the main memory by the BIOS loaded on the CPU and becomes operational. Note that the BIOS also has a check function that checks the presence or absence of various devices connected to the bus. The results of the check are stored in main memory and made available to the operating system as appropriate. Note that the BIOS may be configured to check external devices and the like.

≪I/O controller≫
The I/O controller is used for connection with external equipment. A USB connector is also an example.

≪USB, IEEE1394 connector, LAN terminal, etc.≫
USB, IEEE1394 connector, LAN terminal, etc. are the most typical communication standard interfaces.

The above is a configuration that is commonly used in the description of the hardware configuration in all embodiments in this specification.
<Embodiment 1>

This embodiment mainly relates to claims 1, 4, 5, 8, 9, and 12.
<Embodiment 1 Apparatus Overview>

The device for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment is a device for acquiring placement information of a plurality of reinforcing bars arranged in parallel in concrete, and is orthogonal to the plurality of reinforcing bars arranged in parallel. By synchronizing the repetition period of the reflection intensity of hyperbola information obtained by performing multiple radar scans in the direction of Generate reinforcement placement information.

With such a reinforcing bar placement information acquisition device, when imaging the positions of multiple reinforcing bars placed in parallel in concrete, it is possible to automatically correct the shift in the scan start position in multiple radar scans. Even if the positioning of the scan start position for each radar scan is fuzzy, it is possible to clearly image the arrangement of reinforcing bars.
Generally speaking, reinforcing bars tend to be arranged in a direction perpendicular to the wall surface in the case of floor reinforcement, and in a vertical direction perpendicular to the floor surface in the case of wall reinforcement. There is a strong tendency to place reinforcement in Therefore, when starting a radar scan, it is normal to start the scan based on this premise. Furthermore, if scanning is not possible in the direction orthogonal to the reinforcement arrangement, this can be detected because there is a radar response that responds to both of the orthogonal reinforcement arrangements. In other words, it is not difficult at a work site to devise a method to perform radar scanning in a state where only the radar response of the reinforcement in one direction of the reinforcement in the orthogonal direction is obtained. In addition, almost all of the reinforcing bars are orthogonal bars. This is because strength calculation is easy.
<Embodiment 1 Configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>

As shown in FIG. 3A, the apparatus 0360 for acquiring reinforcing bar placement information in concrete by radar scanning according to the present embodiment uses a trolley-shaped electromagnetic wave radar apparatus 0350 to scan a reinforced concrete structure (in this embodiment, the floor of a building). This is a device for acquiring the arrangement status of a plurality of X-direction reinforcing bars 0301 arranged inside the concrete C of 0300 and a plurality of Y-direction reinforcing bars 0302 that are substantially orthogonal to these X-direction reinforcing bars 0301. In this embodiment, a case is illustrated in which the reinforcing bars arranged inside the concrete C are in two layers, upper and lower, but it is of course applicable to a case in which the reinforcing bars are in three or more layers.

An electromagnetic wave radar device 0350 having a trolley shape has a transmitting antenna 0351 that radiates electromagnetic waves to the reinforcing bars placed inside the concrete C, and a reflected wave of the radiated electromagnetic waves from the reinforcing bars (in FIG. 3A, the X-direction reinforcing bars 0301 It consists of a receiving antenna 0352 that receives reflected electromagnetic waves (indicating reflected electromagnetic waves), and a radar screen 0353 that displays the reception strength of the reflected waves at the receiving antenna 0352 according to the position from the reinforcing steel of the electromagnetic wave radar device 0350. . In this case, the electromagnetic wave radar device 0350 has a built-in distance meter such as a linear encoder or a rotary encoder, and as described later, the radar scanning starting point (start position) when moving on the surface of the structure and performing radar scanning. It is now possible to measure the distance from to the current scanning position. Then, on the radar screen 0353, the received intensity of the reflected wave can be recorded and displayed as a function of the distance from the radar scanning starting point. Note that the moving speed when performing radar scanning with the electromagnetic wave radar device 0350 does not affect the understanding of the placement status of the X-direction reinforcing bars 0301 and the Y-direction reinforcing bars 0302, so the electromagnetic wave radar device 0350 must be manually moved during radar scanning. Alternatively, for example, the vehicle may be driven automatically at a constant speed by a motor.

When performing radar scanning on the surface of a structure using such an electromagnetic wave radar device 0350, as described above, the electromagnetic wave radar device 0350 is moved in a direction perpendicular to the X-direction reinforcing bars 0301, and also perpendicular to the Y-direction reinforcing bars 0302. need to move in the direction.
Therefore, considering that the X-direction reinforcing bars 0301 and the Y-direction reinforcing bars 0302 are regularly arranged in a grid pattern, when the reinforced concrete structure is the floor 0300 of a building as in this embodiment, FIG. 3B As shown in the figure, first, the electromagnetic wave radar device 0350 is plotted from a position near one corner of the floor 0300 (the intersection of the wall (or side) Wa along the Y direction in the diagram and the wall (or side) Wb along the X direction in the diagram). By moving once in the Y direction and the X direction shown in the drawing, the Y-direction reinforcing bar 0302 is buried at the position closest to the wall (or side) Wa, and the X buried at the position closest to the wall (or side) Wb. The position of the reinforcing bars 0301 in the direction is grasped, and the pitches (intervals) of the reinforcing bars 0301 in the X direction and the reinforcing bars in the Y direction 0302 are grasped.
Then, a start line La for radar scanning in the X direction is set near the wall (or side) Wa along the illustrated Y direction on the floor 0300, and the start line La is set in the vicinity of the Y direction reinforcing bar 0302 closest to the wall (or side) Wa ( Radar scanning is performed in the X direction from the wall side). Similarly, a start line Lb for radar scanning in the Y direction is set near the wall (or side) Wb along the illustrated X direction on the floor 0300, and the X direction reinforcing bar 0301 closest to the wall (or side) Wb is Perform radar scanning in the Y direction from the front (wall side). It is preferable to draw a line or attach tape as a mark on the surface of the structure at the starting lines La and Lb set near the wall (or near the edge).
Note that if walls (or sides) Wa and Wb surrounding the floor 0300 can be used as starting lines La and Lb, for example, in the radar scan in the Y direction, as shown in the partially enlarged view of FIG. 3C, In addition, it is preferable to start with the rear part of the electromagnetic wave radar device 0350 abutting the wall (or side) Wb in the X direction in the drawing. Similarly, in X-direction radar scanning, although not shown, it is preferable to start with the rear of the electromagnetic wave radar device abutting against a wall (or side) in the Y-direction. This is because it is possible to suppress mutual deviations in the start positions of radar scans performed multiple times.

Here, if the electromagnetic wave radar device is a self-propelled type that can be moved at a constant speed by a motor, for example, it can be used for radar scanning outdoors such as on the roof of a building, the roof of a nuclear power plant building, or a bridge. , it may be self-propelled using GPS (Global Positioning System). On the other hand, for example, in indoor radar scanning such as on the floor of a building, multiple beacons are placed inside the building, and an electromagnetic wave radar device is equipped with a receiving terminal for the beacons and is guided by the multiple beacons and runs on its own. You can do it like this.
<Embodiment 1 Configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>
<Embodiment 1 Configuration Functional Block>

As shown in FIG. 3D, the apparatus 0360 for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment includes a hyperbolar information holding section 0361, a hyperbolar information synchronization section 0362, and a placement information generating section 0363. There is.
<Embodiment 1 Configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>
<Embodiment 1 Configuration Functional block Hyperbola information holding unit>

The “hyperbola information holding unit 0361” holds hyperbola information related to the X-direction reinforcing bar 0301 acquired by the electromagnetic wave radar device 0350. As shown in FIG. 3A, the hyperbola information related to the X-direction reinforcing bar 0301 is obtained by performing radar scanning by moving the electromagnetic wave radar device 0350 in a direction perpendicular to the X-directional reinforcing bar 0301, Hyperbola information related to the plurality of X-direction reinforcing bars 0301 is acquired by performing the process multiple times while changing the route across the plurality of X-direction reinforcing bars 0301 arranged in the . In this case, each hyperbola information acquired for each radar scan performed multiple times by changing the route includes a radar scan path to identify which route out of multiple routes the radar scan passed through. Identification information is attached to each of them, and the "hyperbola information holding unit 0361" holds hyperbola information to which radar scanning route identification information is attached.
In addition, this "hyperbolar information holding unit 0361" holds hyperbolar information related to the Y-direction reinforcing bar 0302 acquired by the electromagnetic wave radar device 0350, similarly to the X-direction reinforcing bar 0301. Hyperbola information related to the plurality of Y-direction reinforcing bars 0302 arranged approximately in parallel can also be obtained by performing radar scanning in a direction perpendicular to the Y-direction reinforcing bars 0302 multiple times by changing the route across the plurality of Y-direction reinforcing bars 0302. be obtained. Each piece of hyperbola information acquired each time a radar scan is performed multiple times by changing the route is also retained in the "hyperbola information holding unit 0361" with radar scan route identification information attached to each piece of information. ing.
At this time, the intersection point of the start lines La and Lb of the radar scan shown in FIG. It is preferable to set the intersection point of Lb as the origin Lp, and to sequentially assign serial numbers to the radar scanning route identification information starting from this origin Lp.

Here, as shown in the schematic diagram of the buried state of the X-direction reinforcing bars 0301 in FIG. Since the electromagnetic waves radiated from the concrete C propagate in the advancing and retreating directions inside the concrete C, for example, even at position P1 before the electromagnetic wave radar device 0350 passes directly above the X-direction reinforcing bars 0301, the X-direction reinforcing bars The oblique reflected wave R1 from 0301 will be received. At this time, as shown in the diagram simulating the radar screen in FIG. 3F, on the radar screen of the electromagnetic wave radar device 0350, the reflection intensity when the electromagnetic wave radiated at the position P1 returns as a reflected wave R1 is the same as that of the electromagnetic wave radar device. It is arranged to be displayed corresponding to position P1. Then, when the electromagnetic wave radar device 0350 passes the position P2 directly above the X-direction reinforcing bar 0301, the electromagnetic wave radiated at this position P2 returns as a reflected wave R2, and the reflection intensity becomes the highest, and this is shown on the radar screen. The reflection intensity is displayed corresponding to the position P2. After that, when the electromagnetic wave radar device 0350 passes the position P3, it will receive an oblique reflected wave from the X-direction reinforcing bar 0301 that it passed, and on the radar screen of the electromagnetic wave radar device 0350, the electromagnetic waves radiated at the position P3 will be reflected. The reflection intensity when returning as a reflected wave R3 is displayed corresponding to the position P3.
As a result, the radar screen displays a symmetrical chevron-shaped waveform having a peak at the X-direction reinforcing bar 0301, that is, a hyperbola waveform (information) that is position information of the X-direction reinforcing bar 0301.
Note that when the electromagnetic wave radar device 0350 passes the position P2 directly above the X-direction reinforcing bar 0301 where the reflection intensity from the X-direction reinforcing bar 0301 is the largest, a passing sound is generated to make the surroundings aware of the passage of this electromagnetic wave radar device 0350. It can be configured to emit light or light.

For example, as shown in the image diagram of radar scanning in Figure 3G (a diagram that summarizes three reinforcing bars, the radar scanning direction for those reinforcing bars, and the radar reflection intensity), radar scanning is performed multiple times by changing the route (Figure 3G). (three times in the illustrated example), the hyperbola information related to the X-direction reinforcing bars 0301A, 0301B, and 0301C acquired by radar scanning along the first scanning path SC1 is displayed on the radar screen of the electromagnetic wave radar device after the scanning is completed. Ru. Similarly, each hyperbola information related to the X-direction reinforcing bars 0301A, 0301B, and 0301C acquired by the radar scan along the second scan path SC2 and the radar scan along the third scan path SC3 also receives electromagnetic waves after each scan. Displayed on the radar screen of the radar device.

Then, as shown in FIG. 3H, each hyperbola information related to the X-direction reinforcing bars 0301A, 0301B, and 0301C acquired by each radar scan of the first scanning route SC1 to the third scanning route SC3 is the radar scanning route identification information Wx1 , Wx2, and Wx3 are stored in the "Hyperbola information holding unit 0361".

As in the case of such X-direction reinforcing bars, when the electromagnetic wave radar device is moved in a direction perpendicular to the arrangement direction of Y-direction reinforcing bars and radar scanning is performed, the radar screen shows a left-right symmetry with the Y-direction reinforcing bars as the peak. A chevron waveform, that is, a hyperbola waveform (information) that is waveform information in the depth direction is displayed. The information is stored in the hyperbola information storage unit 0361 with identification information attached to each item.
Note that the device for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment not only acquires reinforcing bar placement information, but also radiates electromagnetic waves into the concrete from the transmitting antenna of the electromagnetic wave radar device to detect reinforcing bars. By receiving the reflected waves reflected back with a receiving antenna, the buried depth (covering depth) of the reinforcing steel can also be measured.

Here, the buried depth D (m) of the reinforcing steel is determined by the time required for the electromagnetic waves radiated from the transmitting antenna to pass through the concrete in half (one way) of the time T (s) from being reflected by the reinforcing steel to being received by the receiving antenna. It is obtained by multiplying the electromagnetic wave velocity V (m/s) by the velocity of the electromagnetic wave, and is expressed by Equation 1.
D=(1/2)×T×V Formula 1

At this time, the speed of electromagnetic waves in air (vacuum) is 3 x 10 ⁸ (m/s), and the speed V when this electromagnetic wave passes through concrete is determined by the specific dielectric constant of concrete, which is the medium, It is expressed by Equation 2. Note that the standard dielectric constant ε _r of concrete, neither dry nor wet, is 6 to 8.
V=(3×10 ⁸ )/(ε _r ) ^1/2 formula 2

Therefore, the buried depth D (m) of the reinforcing bars is expressed by Formula 3 based on Formulas 1 and 2.
D=(1/2)×{(3×10 ⁸ )/(ε _r ) ^1/2 }×T Equation 3
<Embodiment 1 Configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>
<Embodiment 1 Configuration Functional block Hyperbola information synchronization unit>

The "hyperbola information synchronization unit 0362" functions to synchronize the repetition period of the reflection intensity of the plurality of hyperbola information held in the hyperbola information holding part 0361, that is, the reflection intensity of the hyperbola information by multiple radar scans passing through different routes. .

Specifically, in the three hyperbola information to which radar scanning path identification information Wx1, Wx2, and Wx3 shown in FIG. When the position S2 is shifted from the scan start positions S1 and S3 of the other two hyperbola waveforms (information) to which the radar scanning route identification information Wx1 and Wx3 are respectively given, the "hyperbolar information synchronization unit 0362" , functions to synchronize the repetition period of the reflection intensity of the hyperbola waveform to which the radar scanning path identification information Wx2 is given, with the repetition period of the reflection intensity of the other two hyperbola waveforms, as shown by the imaginary line in FIG. 3H. Note that here, the case where the scan start position S2 of the hyperbola waveform of the radar scan path identification information Wx2 is shifted from the scan start positions S1 and S3 of the other two hyperbola waveforms is illustrated, but for example, when the radar scan When the scanning start positions S1, S2, and S3 of the hyperbolar waveforms (information) of the route identification information Wx1, Wx2, and Wx3 are shifted from each other, the "hyperbolar information synchronization unit 0362" synchronizes any one of the hyperbolar waveforms, e.g. It functions to synchronize with the repetition period of the reflection intensity in the hyperbolar waveform of the radar scanning route identification information Wx1.

In other words, the "hyperbolar information synchronization unit 0362" functions to automatically correct mutual errors in scan start positions of hyperbolar waveforms (information) resulting from multiple radar scans along different routes.
<Embodiment 1 Configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>
<Embodiment 1 Configuration Functional block Arrangement information generation unit>

The “placement information generation unit 0363” functions to generate reinforcing bar placement information based on hyperbolar information obtained by radar scanning for different routes and synchronized with each other by the hyperbolar information synchronization unit 0362.

The reinforcement placement information generated by this "placement information generation unit 0363" is a plurality of hyperbolar information synchronized with each other by the hyperbolar information synchronization part 0362, that is, the repetition period of the reflection intensity due to multiple radar scans passing through different routes is It is generated based on mutually synchronized hyperbola information, and in this embodiment, as shown in FIG. 3I, the arrangement situation of reinforcing bars 0301 and 0302 is generated as clear image information. Note that the image information indicating the placement status of the reinforcing bars is displayed on the display 0365 of the reinforcing bar placement information acquisition device 0360 shown in FIG. 3A, but it is desirable to also display it on the radar screen 0353 of the electromagnetic radar 0350.
<Embodiment 1 Hardware configuration Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>

As shown in FIG. 4, the apparatus 0460 for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment has an interface with a CPU 0461, a non-volatile memory 0462 such as an HDD or ROM, and a main memory 0463 such as a D-RAM. It is composed of. The nonvolatile memory 0462 stores a hyperbolar information holding program, a hyperbolar information synchronization program, and a placement information generation program as programs. The data includes information on current signals and phase angles, and these programs and data are read into the holding area of the main memory 0463 and executed in the operating area. In addition, the interface includes a specified low power radio and the like.
<Embodiment 1 Processing flow Mainly corresponds to claims 1, 4, 5, 8, 9, and 12>

In the apparatus for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment, as shown in FIG. Hyperbolar information obtained by performing multiple radar scans along different routes is held.
Next, a hyperbolar information synchronization step S0502 is executed to synchronize the repetition period of the reflection intensity of the hyperbolar information obtained for each different route held.
Next, placement information generation step S0503 is executed, and reinforcing bar placement information is generated as image information based on the hyperbolar information obtained for each different route synchronized in hyperbolar information synchronization step S0502.
<Embodiment 1 Effects Mainly correspond to claims 1, 4, 5, 8, 9, and 12>

In the apparatus for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment, when performing radar scanning to image the positions of a plurality of reinforcing bars arranged in parallel in concrete, the scanning start position for each radar scanning is Even if the alignment is fuzzy, it is possible to obtain an image that accurately and clearly displays the placement of reinforcing bars, so the radar scanning time is reduced by not requiring careful alignment of the scanning start position. Also, it is possible to improve workability.
<Embodiment 2>

This embodiment mainly relates to claims 2, 6, and 10.
<Embodiment 2 Overview of reinforcing bar placement information acquisition device>

The device for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment is based on Embodiment 1, and synchronizes the repetition period of the reflection intensity of hyperbolar information acquired by performing multiple radar scans along different routes. In order to perform this synchronization, the present invention is characterized in that it further includes a starting point input receiving section that receives an input for specifying the part that is the starting point of this synchronization.

In such a reinforcing bar placement information acquisition device, when synchronizing the repetition period of the reflection intensity of hyperbolar information, the starting point input receiving unit specifies the part that is the starting point of synchronization. This means that the repetition period of the reflection intensity in the hyperbola information is quickly synchronized.
<Embodiment 2 Configuration Mainly corresponds to claims 2, 6, and 10>
<Embodiment 2 Configuration Functional block Origin input reception unit>

As shown in FIG. 6A, a device 0660 for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment is characterized by a plurality of radars passing through different routes compared to the reinforcing bar placement information acquiring device 0660 of the first embodiment. Prior to synchronizing the repetition period of the reflection intensity of the hyperbolar information acquired by scanning in the hyperbolar information synchronization unit 0662, the present invention further includes a starting point input receiving unit 0664 that receives an input for specifying a part that is the starting point of this synchronization. The point is that it is.

In this starting point input receiving unit 0664, as shown in FIG. 6B, for example, each scan start position S1, In the case where S2 and S3 are shifted from each other, the starting point of the repetition period of each reflection intensity, specifically, for example, the first part from the start of scanning in each hyperbola waveform of radar scanning path identification information Wx1, Wx2, Wx3. Input the peak positions L1, L2, and L3 related to the same reinforcing bar 0601A that appears. That is, if there is a hyperbolar waveform (information) up to the radar scanning path identification information Wxn, input up to the peak position Ln related to the same reinforcing bar 0601A.

Therefore, in the reinforcing bar placement information acquisition device 0660 according to the present embodiment, the repetition period of the reflection intensity in the hyperbolar information held in the hyperbolar information holding unit is quickly synchronized, and the reinforcing bar placement information is acquired by radar scanning. Further time savings will be realized.
For example, as shown in FIG. 6C, if the reinforced concrete structure is a floor 0600 of a building and there are protrusions 0650 such as columns at the four corners, in other words, in a direction perpendicular to the buried reinforcing bars 0601. If the scan start positions S1 and S5 of the radar scan indicated by the arrows to and S2 to S4 are different, the hyperbola waveform obtained by the radar scan from the scan start positions S1 and S5 and each radar of the scan start positions S2 to S4 are different. The reinforcing bars that appear first from the start of scanning are different from the hyperbola waveform obtained by scanning. Specifically, in the hyperbola waveform obtained from each radar scan from scan start positions S2 to S4, the first peak that appears from the start of scan is related to reinforcing bar 0601A, but the peak that appears first from the start of scan is related to reinforcing bar 0601A, but the peak that appears first from the start of scan is related to reinforcing bar 0601A, but the In the hyperbola waveform obtained, the first peak that appears from the start of scanning is related to reinforcing bar 0601C.
In such a case, in the reinforcing bar arrangement information acquisition device 0660 according to the present embodiment, first, the peak related to the same reinforcing bar 0601A that appears first from the start of scanning of the hyperbolar waveform obtained in each radar scan of the scanning start positions S2 to S4 is detected. Enter the position as the starting point. Then, when inputting as a starting point the position of the peak related to reinforcing bar 0601C that first appears from the start of scanning of the hyperbola waveform obtained by radar scanning from scanning starting positions S1 and S5, in each radar scanning from scanning starting positions S2 to S4, This is also handled by inputting the position of the peak related to reinforcing bar 0601C as a starting point in the obtained hyperbola waveform.
In this way, in the reinforcing bar placement information acquisition device 0660 according to the present embodiment, it is possible to set a plurality of parts that serve as the starting point of the repetition period of each reflection intensity of the hyperbolar waveform (information) acquired by radar scanning through different routes. can.
<Embodiment 2 Hardware configuration Mainly corresponds to claims 2, 6, and 10>

As shown in FIG. 7, the reinforcing bar placement information acquisition device 0760 of this embodiment is composed of a CPU 0761, a nonvolatile memory 0762 such as an HDD or ROM, a main memory 0763 such as a D-RAM, and an interface. . The nonvolatile memory 0762 stores a hyperbolar information holding program, a hyperbolar information synchronization program, a placement information generation program, and a starting point input reception program as programs. The data includes information on current signals and phase angles, and these programs and data are read into the holding area of the main memory 0763 and executed in the operating area. In addition, the interface includes a specified low power radio and the like.
<Embodiment 2 Processing flow Mainly corresponds to claims 2, 6, and 10>

In the reinforcing bar placement information acquisition device of this embodiment, as shown in FIG. 8, after the hyperbolar information holding step S0801 is executed, and before the hyperbolar information synchronization step S0802 and the placement information generation step S0803 are sequentially executed, A starting point input reception step S0804 is executed. In this starting point input reception step S0804, based on the repetition of the reflection intensity of hyperbolar information obtained by radar scanning of different routes, an input for specifying a starting point for synchronization in hyperbolar information synchronization step S0802 is input. Reception is executed.
<Embodiment 2 Effects Mainly correspond to claims 2, 6, and 10>

The apparatus for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment has the effect that it is possible to further shorten the working time when acquiring reinforcing bar placement information by radar scanning.
<Embodiment 3>

This embodiment mainly relates to claims 3, 7, and 11.
<Embodiment 3 Overview of reinforcing bar placement information acquisition device>

The apparatus for acquiring reinforcing bar placement information in concrete through radar scanning according to the present embodiment is based on Embodiment 1, and synchronizes the repetition period of reflection intensity in hyperbolar information acquired by performing multiple radar scans along different routes. The present invention is characterized in that it further includes a starting point obtaining unit that obtains a starting point for this synchronization before the synchronization is performed.

In such a reinforcing bar placement information acquisition device, at the time when the repetition period of the reflection intensity in the hyperbolar information is synchronized, the part that becomes the starting point of synchronization is acquired by the starting point acquisition unit, so that it is retained in the hyperbolar information holding unit. This means that the repetition period of the reflection intensity in the hyperbola information is quickly synchronized.
<Embodiment 3 Configuration Mainly corresponds to claims 3, 7, and 11>
<Embodiment 3 Configuration Functional block Origin acquisition unit>

As shown in FIG. 9A, the feature of the reinforcing bar placement information acquisition device 0960 of this embodiment compared to the reinforcing bar placement information acquisition device of Embodiment 1 is that Prior to synchronizing the repetition period of the information reflection intensity by the hyperbolar information synchronization unit 0962, the present invention further includes a starting point acquisition unit 0965 that automatically acquires a part that becomes the starting point of this synchronization.

In this starting point acquisition unit 0965, as shown in the upper part of FIG. 9B, for example, each peak that appears at the beginning of the hyperbola waveform (information) of the radar scanning route identification information Wx1, Wx2, Wx3 acquired by radar scanning passing through different routes. When the positions are shifted from each other, the starting point of the repetition period of each reflection intensity, specifically, for example, each peak position of the radar scanning path identification information Wx1, Wx2, Wx3 is automatically acquired, that is. , automatically acquire a predetermined number of peak positions.
In this way, by automatically acquiring each peak position (corresponding to reinforcing bar 0901A) that appears first in the radar scanning path identification information Wx1, Wx2, and Wx3 as the starting point of the repetition period of the reflection intensity, hyperbolar information synchronization can be achieved. At this point, as shown in the lower part of FIG. 9B, the repetition period of the reflection intensity in the hyperbolar information is synchronized.

Therefore, also in the reinforcing bar placement information acquisition device 0960 according to this embodiment, the repetition period of the reflection intensity in the hyperbolar information held in the hyperbolar information holding unit is quickly synchronized, and the reinforcing bar placement information obtained by radar scanning is quickly synchronized. Further shortening of acquisition time is achieved.
<Embodiment 3 Hardware configuration Mainly corresponds to claims 3, 7, and 11>

As shown in FIG. 10, the reinforcing bar placement information acquisition device 1060 of this embodiment includes a CPU 1061, a nonvolatile memory 1062 such as an HDD or ROM, a main memory 1063 such as a D-RAM, and an interface. . The nonvolatile memory 1062 stores a hyperbolar information holding program, a hyperbolar information synchronization program, a placement information generation program, and a starting point acquisition program as programs. The data includes information on current signals and phase angles, and these programs and data are read into the holding area of the main memory 1063 and executed in the operating area. In addition, the interface includes a specified low power radio and the like.
<Embodiment 3 Processing flow Mainly corresponds to claims 3, 7, and 11>

In the reinforcing bar placement information acquisition device of this embodiment, as shown in FIG. 11, after the hyperbolar information holding step S1101 is executed, and before the hyperbolar information synchronization step S1102 and the placement information generation step S1103 are sequentially executed, A starting point acquisition step S1104 is executed. In this starting point acquisition step S1104, a part that will be the starting point for synchronization in the hyperbolar information synchronization step S1102 is acquired based on the repetition of the reflection intensity of hyperbolar information obtained by radar scanning of different routes.
<Embodiment 3 Effects Mainly correspond to claims 3, 7, and 11>

Similarly to the reinforcing bar placement information acquisition device in the second embodiment, the device for acquiring reinforcing bar placement information in concrete using radar scanning according to the present embodiment further shortens the work time when acquiring reinforcing bar placement information by radar scanning. This has the effect that it is possible to realize the following.

0360 Rebar placement information acquisition device 0361 Hyperbora information holding unit 0362 Hyperbora information synchronization unit 0363 Placement information generation unit

Claims (12)

A reinforcing bar placement information acquisition device that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel,
a hyperbolar information holding unit that holds hyperbolar information obtained by performing multiple radar scans in orthogonal directions across a plurality of reinforcing bars arranged in parallel and passing through different routes;
a hyperbolar information synchronization unit that synchronizes the repetition period of the reflection intensity of hyperbolar information by multiple radar scans passing through different paths that are maintained;
a placement information generation unit that generates reinforcing steel placement information based on hyperbola information obtained for each of the synchronized different routes;
A device for acquiring reinforcing steel information in concrete using radar scanning. 2. The apparatus according to claim 1, further comprising a starting point input receiving section that receives an input for specifying a starting point for the synchronization based on repetitions of reflection intensities of hyperbolar information obtained by radar scanning of the different routes. A device for acquiring information on reinforcing bars in concrete using radar scanning. The method according to claim 1, further comprising a starting point acquisition unit that obtains a starting point for the synchronization based on repetition of the reflection intensity of the hyperbolar information obtained by the radar scanning of the different routes. Reinforcement information acquisition device. 3. The apparatus for acquiring reinforcing bar information in concrete by radar scanning according to claim 1 or 2, wherein the placement information generated by the placement information generation section is image information. A reinforcing bar placement information acquisition program that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel,
a hyperbola information retention program that holds hyperbola information obtained by performing multiple radar scans in orthogonal directions across a plurality of reinforcing bars arranged in parallel and passing through different routes;
a synchronization program that synchronizes the repetition period of the reflection intensity of the hyperbolar information obtained for each of the different paths held;
a placement information generation program that generates reinforcing bar placement information based on hyperbola information obtained for each of the synchronized different routes;
A program for acquiring information on reinforcing bars in concrete using radar scanning recorded in a readable and executable manner on a reinforcing bar information acquisition device, which is a computer with a computer. 6. The starting point input receiving program according to claim 5, further comprising a starting point input receiving program that receives an input for specifying a starting point for the synchronization based on repetition of the reflection intensity of the hyperbolar information obtained by radar scanning of the different routes. A program to obtain information on reinforcing bars in concrete using radar scanning. 6. The method according to claim 5, further comprising a starting point acquisition program that obtains a starting point for said synchronization based on repetition of the reflection intensity of hyperbolar information obtained by said radar scanning of different routes. Rebar information acquisition program. 7. The program for acquiring reinforcement information in concrete by radar scanning according to claim 5 or 6, wherein the placement information generated by the placement information generation program is image information. An operating method of a reinforcing bar placement information acquisition device that acquires placement information of a plurality of reinforcing bars buried in concrete and arranged in parallel, the method comprising:
a hyperbola information holding step of holding hyperbola information obtained by performing a plurality of radar scans in orthogonal directions across a plurality of reinforcing bars arranged in parallel and passing through different routes;
a synchronization step of synchronizing the repetition period of the reflection intensity of the hyperbolar information obtained for each of the different paths held;
a placement information generation step of generating reinforcing bar placement information based on hyperbola information obtained for each of the synchronized different routes;
An operating method of a device for acquiring reinforcing steel information in concrete using radar scanning. 10. The method further comprises a starting point input receiving step of accepting an input for specifying a starting point for the synchronization based on repetitions of reflection intensities of hyperbolar information obtained by radar scanning of the different routes. Operation method of a device for acquiring information on reinforcing bars in concrete using radar scanning. 10. The method according to claim 9, further comprising a starting point obtaining step of obtaining a starting point for said synchronization based on repetition of the reflection intensity of hyperbolar information obtained by said radar scanning of different routes. How the reinforcing steel information acquisition device works. 11. The method of operating an apparatus for acquiring reinforcing bar information in concrete using radar scanning according to claim 9 or 10, wherein the placement information generated in the placement information generation step is image information.

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