JP2021117075A - Buried material searching apparatus and method for analyzing search target object - Google Patents

Abstract

To increase the accuracy of searching of a buried material searching apparatus.SOLUTION: The buried material searching apparatus according to an embodiment includes a probe device, a condition setting unit, and an estimation unit. The probe device has a plurality of probes capable of sending and receiving sound waves arranged in a matrix. The condition setting unit sets a condition of information to be used in analysis for specifying the position of the search target object. The estimation unit estimates the position of the search target object on the basis of a lapsed time which fits the condition out of the lapsed times from when sound waves are sent to when each probe receives sound waves reflected by the search target object.SELECTED DRAWING: Figure 1

Description

The present invention relates to a buried object exploration device and a method for analyzing an exploration object.

When performing seismic retrofitting work on existing buildings, there are many problems such as erroneous cutting of reinforcing bars, erroneous cutting of buried pipes, and erroneous cutting of buried cables during boring work and post-casting anchor placement work. ..

In order to prevent such problems, the presence or absence of buried objects is increasingly investigated in advance by a buried object exploration device using an electromagnetic wave radar or the like. For exploration of buried objects, for example, a buried object exploration device using an aperture synthesis method is used (Non-Patent Document 1).

"Ultrasound Imaging of Defects by Inverse Scattering Imaging Method Using Whole Wavelet Sampling Processing (FSAP)" Applied Mechanics Proceedings Vol13, pp89-97 August 2010, Japan Society of Civil Engineers

However, in these buried object exploration devices, since the electromagnetic wave radar is focused on a deep position, the exploration accuracy at a position shallower than the focal point is low. Therefore, the buried object may not be displayed, or it may be displayed as if there is a buried object even though there is no buried object due to ghosting.

The present invention has been made under the above-mentioned circumstances, and an object of the present invention is to improve the exploration accuracy of a buried object exploration apparatus.

In order to solve the above problems, the buried object exploration device according to the embodiment includes a probe device, a condition setting unit, and an estimation unit. The probe device has a plurality of probes capable of transmitting and receiving sound waves arranged in a matrix. The condition setting unit sets the conditions of the information used for the analysis for specifying the position of the exploration object. The estimator estimates the position of the exploration object based on the elapsed time that meets the conditions in the elapsed time from the transmission of the sound wave to the reception of the sound wave reflected by each of the plurality of probes on the exploration object. ..

It is a block diagram of the buried object exploration apparatus which concerns on embodiment. It is a block diagram of the probe apparatus which concerns on embodiment. It is a figure for demonstrating the probe which concerns on embodiment. It is a block diagram of the receiving part which concerns on embodiment. It is a block diagram of the estimation part which concerns on embodiment. It is a figure for demonstrating the operation of the transmission part and the receiving part which concerns on embodiment. It is a figure for demonstrating the analysis method using the buried object exploration apparatus which concerns on embodiment. It is a figure for demonstrating the analysis method using the buried object exploration apparatus which concerns on embodiment. It is a figure for demonstrating the analysis method using the buried object exploration apparatus which concerns on embodiment. It is a figure for demonstrating the analysis method using the buried object exploration apparatus which concerns on embodiment. It is a figure for demonstrating the operation of the distance conversion part which concerns on embodiment. It is a figure for demonstrating the operation of the distance conversion part which concerns on embodiment. It is a figure for demonstrating the operation of the image data creation part which concerns on embodiment.

Hereinafter, the buried object exploration apparatus according to the embodiment will be described with reference to the drawings. In the description, an XYZ coordinate system consisting of X-axis, Y-axis, and Z-axis that are orthogonal to each other is appropriately used.

FIG. 1 is a block diagram of the buried object exploration device 1 according to the present embodiment. The buried object exploration device 1 is, for example, an apparatus for exploring reinforcing bars and pipes buried in concrete.

As shown in FIG. 1, the buried object exploration device 1 has a probe device 100 and an analysis device 200.

(Probe device)
FIG. 2 is a configuration diagram of the probe device 100. As shown in FIG. 2, the probe device 100 has a plurality of probes P arranged in a matrix. In FIG. 2, the probe P is represented by a square with the letter P. Each of the probes P can transmit and receive sound waves of the first frequency f1. Here, the first frequency f1 is set to 70 kHz.

The distance L1 between the adjacent probes P is set so as to satisfy Equation 1 where the wavelength of the sound wave of the first frequency f1 is λ1 and the propagation speed of the sound wave in the concrete is V.
L1 ≤ λ1 / 2 (Equation 1)
λ1 = V / f1

Assuming that the sound wave propagation velocity V in concrete is 4000 m / s and f1 is 70 kHz, L1 is about 28 mm or less.

In FIG. 2, the length D1 in the X-axis direction from the probe P of P8 on the upper right to the probe P of P128 on the lower right is V for the propagation velocity of sound waves in concrete, and the depth in the Z-axis direction for exploration. Is N, and is set so as to satisfy Equation 2.

When N is 400 mm, D1 is about 302 mm or more. When L1 is 28 mm, the number N1 of probes P arranged in the X-axis direction is 11 or more. Here, N1 is set to 16.

As described above, in the probe device 100 shown in FIG. 2, 16 probes P are arranged in the X-axis direction and 8 probes P are arranged in the Y-axis direction. Probes P from P1 to P8 are arranged from the upper left of FIG. 2 in the Y direction. In the second row of the probe P, the probes P from P9 to P16 are arranged in the Y direction. In the bottom row of the probe P, the probes P from P121 to P128 are arranged in the Y direction.

FIG. 3 is an image diagram of the probe P. The shape of the probe P is a cube. For example, the length Lx of the probe P in the X-axis direction is 21 mm, the length Ly in the Y-axis direction is 21 mm, and the length Lz in the Z-axis direction is 21 mm. The probe P is configured by combining a plurality of vibrating elements in a matrix. The vibrating element used for the probe P is a vibrating element that resonates with a sound wave having a first frequency f1. When the direction in which the sound wave is output is the + Z direction, the damper 12 is provided on the −Z side of the probe P. The damper 12 includes a quadrangular pyramid portion and a rectangular portion. The damper 12 is made of tungsten or the like. The damper 12 is provided to efficiently output sound waves in the + Z direction.

(Analyzer)
As shown in FIG. 1, the analysis device 200 includes a transmission unit 210, a reception unit 230, a control unit 250, an estimation unit 260, a condition setting unit 270, an image data creation unit 290, and a display unit 300.

The control unit 250 includes a CPU 251 and a RAM 253 and a ROM 255. The ROM 255 stores application software and the like for exploring buried objects (exploration objects). The RAM 253 is used as a working area of the CPU 251. The CPU 251 controls each part based on the operation by the analyst and the application software stored in the ROM 255.

The transmission unit 210 transmits a signal corresponding to the sound wave of the first frequency f1 to each of the probes P based on the instruction of the control unit 250. Specifically, the transmission unit 210 transmits, for example, a signal having a main frequency component of 70 kHz and a signal level of 200 V to each of the probes P.

FIG. 4 is a block diagram of the receiving unit 230. The receiving unit 230 has a number of AMP 231s and an A / D converter 232 corresponding to the number of probes P (128). Each AMP231 amplifies the sound wave signal received by the corresponding probe P. The A / D converter 232 samples the amplified sound wave signal every Δt (for example, 100 ns) and performs A / D conversion. The receiving unit 230 determines the number of the transmitted probe P, the number of the received probe P, the elapsed time T (i) from the time t0 at which the transmitting unit 210 transmits the signal to each sampling time, and the signal intensity of the received sound wave. It is attached and stored in the RAM 253 in the control unit 250.

The condition setting unit 270 shown in FIG. 1 sets the condition of the elapsed time T (i) used for the analysis to specify the position of the search object in the elapsed time T (i) stored in the RAM 253. Specifically, the condition setting unit 270 sets the upper limit value and the lower limit value of the elapsed time T (i) from the time t0 at which the transmission unit 210 transmits the signal to each sampling time based on the specification of the analyst. .. Further, the condition setting unit 270 specifies a probe that is not arranged around the matrix among the plurality of probes P arranged in a matrix based on the designation of the analyst. For example, a probe P other than the probe P arranged in 2 rows and 2 columns around the matrix among the plurality of probes P arranged in the matrix shown in FIG. 2 is specified. The analysis for identifying the position of the object to be searched is performed based on the elapsed time T (i) of the sound wave received by the designated probe P.

The estimation unit 260 determines the position of the search object based on the elapsed time from the transmission of the sound wave of the first frequency f1 to the reception of the sound wave of the first frequency f1 reflected by each of the plurality of probes P on the search target. To estimate. As shown in FIG. 5, the estimation unit 260 has a distance conversion unit 261 and a synthesis unit 262.

The distance conversion unit 261 extracts the elapsed time T (i) that satisfies the condition set by the condition setting unit 270, and transmits the sound wave of the first frequency f1 reflected on the search object from the time t0 when the transmission unit 210 transmits the signal. The elapsed time T (i) until reception is converted into the distance to the exploration target. That is, the distance conversion unit 261 is associated with the probe P of the specified number from the data of the elapsed time T (i) stored in the RAM 253, and the upper limit in which the value of the elapsed time T (i) is set is set. The data of the elapsed time T (i) which is equal to or less than the value and is equal to or more than the lower limit is extracted, and the extracted elapsed time T (i) is converted into the distance to the exploration object. The distance conversion unit 261 links the number of the transmitted probe P, the number of the received probe P, the distance to the search target, and the signal level, and stores each of the plurality of probes P in the RAM 253.

The synthesis unit 262 estimates the position of the search target based on the distance from each of the probes P obtained for each of the plurality of probes P to the search target. Details will be described later.

The image data creation unit 290 creates image data representing an image indicating the position of the search object estimated by the estimation unit 260, and outputs the image data to the display unit 300. Specifically, the image data creation unit 290 converts the data represented by the signal level into image data and outputs the data to the display unit 300. The image data creation unit 290 can create image data in which the image is rotated about the X-axis, the Y-axis, and the Z-axis based on the designation of the analyst. Further, the image data creation unit 290 obtains image data of a cross section of a depth specified by the analyst (image data of a cross section image obtained by cutting a stereoscopic image into round slices at an arbitrary depth) based on the designation of the analyst. Can be created. In addition, the image data creation unit 290 can create image data in which a predetermined range of the image is enlarged based on the designation of the analyst.

The display unit 300 is a liquid crystal display. The display unit 300 displays an image based on the image data acquired from the image data creation unit 290.

(motion)
Next, the operation of the buried object exploration device 1 will be described. First, the transmission unit 210 transmits a signal corresponding to the sound wave of the first frequency f1 to the first probe P (P1) based on the instruction of the control unit 250. The probe P of P1 transmits a sound wave having a first frequency of f1. Further, the transmitting unit 210 notifies the receiving unit 230 of the time t0 at which the signal is transmitted to the probe P.

The probes P from P2 to P128 receive the sound waves reflected by the object to be searched, and output the received signals to the analyzer 200. The AMP231 of the analysis device 200 shown in FIG. 4 amplifies the signal output from the probe P and outputs it to the A / D converter 232. The A / D converter 232 links the number of the transmitted probe P, the number of the received probe P, the elapsed time T (i) from the time t0 when the transmission unit 210 transmits the signal to each sampling time, and the signal level. Store in RAM 253.

FIG. 6 is a diagram showing the relationship between the transmission signal and the reception signal. As shown in FIG. 6, the A / D converter 232 samples the amplified sound wave signal for each Δt and performs A / D conversion to acquire the signal level of the amplified sound wave. Δt is, for example, 100 ns. The A / D converter 232 operates a counter for each sampling cycle Δt, multiplies the counter value K by Δt, and the elapsed time T (from the time t0 when the transmission unit 210 transmits the signal to each sampling time). i) is sought. The A / D converter 232 links the elapsed time T (i) and the signal level and stores them in the RAM 253. Specifically, the A / D converter 232 uses information on which probe P1 to P128 the transmitted probe P is, and the data of the signal received by which probe P1 to P128 the data transmitted to the RAM 253. The existence is stored in the RAM 253 in association with the above information.

When the range for exploring the object to be searched is wider than the XY plane of the probe device 100 shown in FIG. 2, the analyst performs the above measurement while shifting the probe device 100 in the X-axis direction and the Y-axis direction. When analyzing an object to be explored, among a plurality of probes P arranged in a matrix, only the elapsed time T (i) based on the sound waves received by the probes P not arranged around the matrix is used for the analysis. By doing so, the exploration accuracy can be improved. Of the plurality of probes P arranged in a matrix, the sound waves received by the probes P arranged around the matrix are weaker than the sound waves received by the probes P arranged in the center of the matrix, so that the analysis accuracy is low. Because it becomes.

A method of moving the probe device 100 will be described with reference to FIG. 7. For ease of understanding, the case where the probes P are arranged in an 8 × 8 matrix will be described here. The first measurement area is S1, the second measurement area is S2, the third measurement area is S3, and the fourth measurement area is S4. When performing an analysis based on the data of the regions S11 to S41 in the central portion of the 8 × 8 matrix S1 to S4, the analyst first performs the analysis so that the + Y side of the region S11 and the −Y side of the region S21 overlap. The probe device 100 is moved in the + Y direction from the measurement position of. Further, when performing the third measurement, the analyst moves the probe device 100 in the + X direction from the first measurement position so that the + X side of the region S11 and the −X side of the region S31 overlap.

By moving the probe device 100 in this way, it is possible to perform highly accurate measurement in the continuous range of S11, S21, S31, and S41 shown in FIG.

After completing the process of obtaining the elapsed time T (i) of the sound wave measured by the probe device 100 for the entire range of exploration of the exploration object, the analyst analyzes the exploration object using the buried object exploration device 1. I do. First, the analyst sets the range in the depth direction to analyze. The analysis accuracy can be improved by narrowing the range in the depth direction for analysis. The sound waves transmitted in the + Z direction are reflected by the exploration objects existing at various depths and the coarse aggregate contained in the reinforced concrete. For example, when analyzing the presence or absence of an exploration object at a depth of about 50 cm, for example, a sound wave reflected by an exploration object at a depth of 1 m affects as noise. Therefore, when analyzing the presence or absence of an object to be searched at a depth of about 50 cm, for example, it is possible to improve the analysis accuracy by performing the analysis based only on the sound waves reflected from the depth of 20 cm to 80 cm.

Here, a case where a region of 4 squares in the Y-axis direction and 4 squares in the Z-axis direction are set and analyzed will be described. The region R1 shown in FIG. 9 corresponds to the region S1. The region R2 corresponds to the region S2.

The analyst said that the sound wave of the first frequency f1 reflected on the object to be searched from the time t0 when the transmission unit 210 transmitted the signal so that the + Z side of the region R11 and the −Z side of the region R31 overlap as shown in FIG. The upper limit value and the lower limit value of the elapsed time T (i) until the reception is set. For example, when the depth of the region R11 is 20 cm to 50 cm and the depth of the region R31 is 50 cm to 80 cm, the propagation velocity V of the sound wave in the concrete is 4000 m / s, so that the elapsed time T of the region R11 ( The lower limit value of i) is set to 50 μs, and the upper limit value is set to 125 μs. The 2 squares on the + Y side and the 2 squares on the −Y side of the area R1 are not used.

After completing the analysis of the region R11, the analyst changes the range in the depth direction to be analyzed. When the depth of the region R31 is 50 cm to 80 cm, the propagation velocity V of the sound wave in the concrete is 4000 m / s, so that the lower limit of the elapsed time T (i) of the region R31 is 125 μs and the upper limit is 200 μs. Set. The upper limit value and the lower limit value are set in the same manner for the regions R21 and R41.

By setting the upper limit value and the lower limit value of the elapsed time T (i) in this way, it is possible to perform highly accurate analysis on the continuous range of R11, R21, R31, and R41 shown in FIG.

The distance conversion unit 261 shown in FIG. 5 transmits the sound wave for the elapsed time T (i) from the time t0 when the transmission unit 210 transmits the signal to the reception of the sound wave of the first frequency f1 reflected on the object to be searched. The distance r1 from the probe P to the exploration target and the distance r2 from the probe P to the probe P that received the sound wave are converted. The distance conversion unit 261 sets the elapsed time T (i) as the distance r1 for each of the regions S11, S21, S31, and S41 shown in FIG. 8 and for each of the regions R11, R21, R31, and R41 shown in FIG. Convert to distance r2.

A case where the probe P of P1 transmits a sound wave and the probe P of P2 receives the sound wave reflected by the object to be searched will be described with reference to FIG. The distance from the probe P of P1 to the probe P shown in diagonal lines in FIG. 11 is r1, the distance from the probe P to the probe P of P2 is r2, the propagation velocity of sound waves in concrete is V, and each sampling is performed from time t0. Assuming that the elapsed time to the time is T (i), Equation 3 holds.
r1 + r2 = T (i) × V (Equation 3)

The distance from the probe P of P1 to the probe P of P2 is known. Further, the angle of the sound wave transmitted from the probe P of P1 with respect to the depth direction is also known. Therefore, the distance r1 from the probe P of P1 to the probe P and the distance r2 from the probe P of P2 to the probe P can be obtained. The distance conversion unit 261 associates the signal level with the values of the distances r1 and r2 obtained from the elapsed time T (i) and stores them in the RAM 253.

FIG. 12 is an image diagram of a three-dimensional storage area created in the RAM 253. The three-dimensional storage area includes the number of probes P from P1 to P121 arranged in the X-axis direction (16 squares) and the number of probes P from P1 to P8 arranged in the Y-axis direction (8 squares) shown in FIG. ), And corresponds to the depth direction to be explored. When the exploration resolution M is 4 mm, a storage area is secured so that the signal level can be stored in units of 4 mm. Assuming that the exploration resolution M is 4 mm and the exploration depth N is 400 mm, 100 squares are prepared in the Z-axis direction. That is, a 16 × 8 × 100 matrix-like storage area is created.

The distance conversion unit 261 starts from the elapsed time T (i) from the elapsed time T (i) until the Nth probe P designated by the condition setting unit 270 receives the sound wave reflected by the search object with respect to the transmission of the sound wave of the probe P of the P1. The value of the signal level of the sound wave received by the N-th probe P is input to the square corresponding to the obtained distance from the N-th probe P to the object to be searched.

The transmission unit 210 transmits a signal to the probe P of P1 and then transmits a signal to the probe P of P2 after a lapse of a predetermined time. The probe P of P2 transmits a sound wave, and the probes P of P1 and P3 to P128 receive the sound wave reflected by the object to be searched and output the received signal to the analyzer 200. The distance conversion unit 261 obtains the values of the distances r1 and r2 for the sound waves received by each of the probes P designated by the condition setting unit 270. The distance conversion unit 261 inputs a signal level value to the square corresponding to the distance.

After that, the transmission unit 210 sequentially transmits a signal corresponding to the sound wave of the first frequency f1 to the probe P of P3 to P128 at a predetermined time interval. The distance conversion unit 261 obtains the values of the distances r1 and r2 for the sound waves received by each of the probes P designated by the condition setting unit 270, and inputs the signal level values to the squares corresponding to the distances. The distance conversion unit 261 creates the data shown in FIG. 12 for each transmission of the sound wave of the probe P. The distance conversion unit 261 creates the data shown in FIG. 12 for the regions R11, R21, R31, and R41 shown in FIG. 10 corresponding to the respective regions S11, S21, S31, and S41 shown in FIG.

The synthesis unit 262 adds the signal level values of the corresponding masses of the data shown in FIG. 12 created for the plurality of probes P. The larger the added value, the higher the probability that the exploration object exists.

As shown in FIG. 13, the image data creation unit 290 creates image data in which the added signal level value is converted into luminance. For example, the image data creation unit 290 converts the added signal level value into 256 levels of brightness from white to black. For example, the image data creation unit 290 lowers the brightness (closer to black) as the added signal level value increases. The lower the brightness, the higher the probability that the exploration object exists. Further, the image data creation unit 290 replaces the added signal level value with "0" when the added value is equal to or less than a predetermined threshold value.

The image data creation unit 290 joins the three-dimensional image data of the regions R11, R21, R31, and R41 shown in FIG. 10 corresponding to the regions S11, S21, S31, and S41 shown in FIG. 8 created by the synthesis unit 262. , Create one image data. As a result, image data of the analysis image for the entire area for exploring the exploration object is created. The image data creation unit 290 outputs the created image data to the display unit 300.

Further, the image data creation unit 290 creates image data in which the image is rotated about the X-axis, the Y-axis, and the Z-axis based on the designation of the analyst. Further, the image data creation unit 290 creates image data of an image of a cross section having a depth specified by the analyst based on the designation of the analyst. That is, the image data creation unit 290 creates image data of a cross section obtained by cutting a stereoscopic image into round slices at an arbitrary depth on the Z axis. Further, the image data creation unit 290 creates image data in which an image in a predetermined range is enlarged based on the designation of the analyst. The display unit 300 displays an image based on the image data acquired from the image data creation unit 290.

As described above, in the buried object exploration device 1 according to the present embodiment, the condition setting unit 270 sets the condition of the information used for the analysis to specify the position of the exploration object, and the sound wave of the first frequency is generated. The search target is based on the elapsed time that matches the conditions set by the condition setting unit 270 in the elapsed time from the transmission to the reception of the first frequency sound wave reflected by each of the plurality of probes P on the search target. Estimate the position of an object. Thereby, the exploration accuracy of the buried object exploration device 1 can be improved. Specifically, the condition setting unit 270 sets an upper limit value and a lower limit value of the elapsed time. As a result, the exploration accuracy in the depth direction can be improved. Further, the condition setting unit 270 specifies a probe P that is not arranged around the matrix among the plurality of probes P arranged in a matrix, and is based on the elapsed time until the designated probe receives a sound wave. To estimate the position of the exploration object. As a result, the exploration accuracy in the depth direction around the probe device 100 can be improved.

Further, among a plurality of probes P arranged in a matrix, a probe P that is not arranged around the matrix is designated, and an object to be searched is searched based on the elapsed time until the designated probe P receives a sound wave. By estimating the position, the exploration accuracy can be improved even when the probe device 100 does not satisfy the requirement of the equation 2.

Here, how to determine the first frequency f1 will be described. Assuming that the maximum value of the grain size of the coarse aggregate contained in the reinforced concrete is A and the wavelength of the first frequency f1 is λ1, the condition of Equation 4 must be satisfied.
A <λ1 / 2 (Equation 4)

Assuming that the propagation speed of the sound wave is V, λ1 = V / f1, so the first frequency f1 is set so as to satisfy the condition of Equation 5.
f1 <V / (2A) (Equation 5)

For example, when the maximum value of the grain size of the coarse aggregate contained in the reinforced concrete is 20 mm as A, V = 4000 m / s, so that the first frequency f1 may be set to less than 100 kHz. By making the half wavelength of the sound wave longer than the maximum particle size of the coarse aggregate contained in the reinforced concrete, the scattering of the sound wave in the coarse aggregate is reduced and the attenuation of the intensity of the sound wave reaching the probe is suppressed. be able to.

In the above description, the sound wave propagation velocity V in the concrete is set to 4000 m / s, but the sound wave propagation velocity differs depending on the material constituting the concrete and the like. Equations 1 to 5 are calculated using the propagation velocity of sound waves corresponding to the material of the concrete in which the object to be explored is buried.

Further, in the above description, the case of exploring the exploration object in concrete has been described, but it is not necessary to limit the medium in which the exploration object is buried to concrete. For example, the medium may be soil, wood, metal, or the like. By setting the propagation velocity V of the sound wave as the propagation velocity in each medium, the exploration target can be explored by the above-mentioned method.

Moreover, it is not necessary to limit the exploration target to the object. For example, it is possible to search for cracks and spaces generated in a concrete base or the like. If there are cracks or gaps in the concrete, the sound waves will be refracted or the reflection intensity will change due to the cracks or gaps. When the difference in sound wave reflection intensity due to the presence or absence of cracks or gaps in concrete is small, for example, the exploration accuracy can be improved by increasing the number of measurements and performing statistical processing.

In the above description, the case where the condition setting unit 270 sets the upper limit value and the lower limit value of the elapsed time T (i) has been described, but at least one of the upper limit value and the lower limit value should be set. It may be.

Further, in the above description, the case where the image data creation unit 290 converts the added signal level value into the luminance of 256 steps from white to black has been described, but the display method need not be limited to this. For example, the estimated position of the buried object may be displayed in color.

In the example shown in FIG. 12, a case where one cell is matched with the arrangement of the probe P in the real space (the length in the X-axis direction and the length in the Y-axis direction) is shown. However, one cell can correspond to the length of the real space depending on the accuracy of the analysis.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Buried object exploration device 12 ... Damper 100 ... Probe device 200 ... Analysis device 210 ... Transmitter 230 ... Receiver 231 ... AMP
232 ... A / D converter 250 ... Control unit 260 ... Estimating unit 261 ... Distance conversion unit 262 ... Synthesis unit 270 ... Condition setting unit 290 ... Image data creation unit 300 ... Display unit P ... Probe

Claims (8)

A probe device having a plurality of probes capable of transmitting and receiving sound waves arranged in a matrix, and
A condition setting unit that sets the conditions of information used for analysis to identify the position of the object to be explored, and a condition setting unit.
Estimate to estimate the position of the exploration object based on the elapsed time that meets the conditions in the elapsed time from the transmission of the sound wave to the reception of the sound wave reflected by each of the plurality of probes on the exploration object. Department and
Buried object exploration device equipped with. The condition setting unit sets at least one of the upper limit value and the lower limit value of the elapsed time.
The buried object exploration apparatus according to claim 1. The condition setting unit specifies a probe that is not arranged around the matrix among the plurality of probes arranged in a matrix.
The estimation unit estimates the position of the search object based on the elapsed time from the time when the probe specified by the condition setting unit transmits the sound wave to the time when the sound wave is received.
The buried object exploration apparatus according to claim 1 or 2. It has an image data creation unit that creates image data representing an image indicating the position of the search object estimated by the estimation unit.
The image data creation unit outputs the created image data to the display unit.
The buried object exploration apparatus according to any one of claims 1 to 3. The image data creation unit creates the image data by rotating the image around the X-axis, the Y-axis, and the Z-axis based on the designation of the analyst.
The buried object exploration apparatus according to claim 4. The image data creation unit creates the image data of an image of a cross section having a depth specified by the image analyst.
The buried object exploration apparatus according to claim 4. The image data creation unit creates the image data in which a predetermined range of the image is enlarged based on the designation of the analyst.
The buried object exploration apparatus according to claim 4. A process of transmitting and receiving sound waves with a probe device having a plurality of probes arranged in a matrix capable of transmitting and receiving sound waves.
The process of setting the conditions of the information used for the analysis to identify the position of the exploration object, and
A step of estimating the position of the exploration object based on the elapsed time that meets the above conditions in the elapsed time from the transmission of the sound wave to the reception of the sound wave reflected by each of the plurality of probes on the exploration object. When,
Method of analyzing exploration objects including.

Images