JP6463052B2 - Exploration equipment - Google Patents

Description

  The present invention processes a reflected wave of an electromagnetic wave for exploration radiated toward the ground when scanned along a scanning line set in a search range including a buried pipe buried in the ground, and performs the scanning The present invention relates to an exploration apparatus including a control unit that acquires cross-sectional data indicating a burial state of the buried pipe in a vertical cross-sectional view including a line and displays the cross-sectional data on a display unit.

  As an exploration device as described above, Patent Document 1 discloses a transmission / reception unit that transmits an electromagnetic wave to the ground and receives a reflected wave that is reflected from an object in the ground and returns, and is generated from the received reflected wave. A radar-type underground exploration device including a display device that displays cross-sectional data using the cross-sectional data information signal thus described is described.

  In this device, the underground section data as shown in FIG. 4 is obtained on the display device by performing underground exploration while traveling a traveling body equipped with a transmission / reception unit and a display device along a scanning line set on the ground. Is displayed. The operator looks at the underground cross-section data displayed on the display device and evaluates the presence / absence of an embedded object, the depth of the embedded pipe, and the like.

  Prior to excavation work for a buried pipe such as a gas pipe, it is necessary to grasp the position of the buried pipe to be constructed as accurately as possible, and the buried object search using the above-described apparatus is required.

  However, in recent years, gas pipes, water pipes, and optical fiber cable pipes are buried closely under the ground, and it is possible to accurately grasp the position of the buried pipe to be constructed. It's getting harder. Especially in cases where different types of buried pipes are congested, it is possible to distinguish between buried pipes and buried objects other than buried pipes from exploration data such as underground cross-section data displayed on the display device. In order to determine the type of search, knowledge and skill of exploration technology are required.

  However, experts with knowledge and skill are not always at the exploration site, and if it is difficult to make a decision, contact the expert to request the decision, or repeat the exploration work by the expert. There is a need, but to do this, the work must be temporarily interrupted.

  As one solution to the above problem, Patent Document 2 describes a search device that can perform a highly reliable search evaluation as smoothly as possible even if an expert is not at the search work site. In this apparatus, the search data of a predetermined work area and the captured image of the work area are transmitted to the management apparatus through the communication network in a form associated with each other. As a result, even if the presence of the buried pipe cannot be determined from the exploration data at the site or the position of the buried pipe cannot be determined, a more skilled expert can scan the scan line for new exploration via the management device. Appropriate advice for determining the position of the buried pipe, such as instructions, can be given.

Japanese Patent Laid-Open No. 11-19079 JP 2014-10116 A

  However, an expert who has knowledge and skill is not always present on the management apparatus side, and there is a waiting time for the worker until the expert analyzes the exploration data and returns advice. For this reason, it is desired to realize an exploration device that enables only the operator who handles the exploration device to easily confirm the position of the buried pipe at the work site without an expert.

In order to achieve the above object, the exploration device according to the present invention radiates toward the ground when scanned along a scanning line set in a search range including a buried pipe buried in the ground. An exploration device including a control unit that processes reflected waves of the electromagnetic wave for use, acquires cross-sectional data indicating a state of burying of the buried pipe in a vertical cross-sectional view including the scanning line, and displays the cross-sectional data on a display unit There,
The characteristic configuration is that a plurality of the scanning lines parallel to each other in the search range are scanned, and the cross-sectional data acquisition unit that acquires the cross-sectional data for each of the scanning lines, and the cross-sectional data acquired by the cross-sectional data acquisition unit In each of the cross-sectional data, a marker setting unit that sets a buried pipe marker at a position where the buried pipe may exist, and a position of one buried pipe marker in one cross-sectional data are defined in advance. When the embedded pipe marker is present in the other cross-sectional data in a form superimposed on the cross-sectional data of the one, the one embedded pipe marker in the first cross-sectional data is extracted as an emphasized embedded pipe marker. comprising a marker extraction unit, and a highlight section that highlights the emphasis buried pipe marker, wherein the cross-section data obtaining unit Scans at least three of said scanning lines, lies in you get the cross-sectional data for each said scan line.

According to the above characteristic configuration, the marker setting unit, the marker extraction unit, and the highlighting unit operate based on the plurality of cross-section data acquired by the cross-section data acquisition unit, and the position is within the allowable range over the plurality of cross-section data. If there is an embedded pipe marker that exists, that is, at the same position, the embedding pipe marker is set as the position where the embedded pipe marker is likely to exist. And highlighted. For this reason, the operator can grasp | ascertain the position with high possibility that an embedment pipe | tube exists easily only by the operation | work as before which runs an exploration apparatus on a some scanning line.
That is, even if there is no expert, it is possible to provide an exploration device that can easily confirm the position of the buried pipe at the work site only by an operator who handles the exploration device.
Further, according to the above feature configuration, since at least three pieces of cross-sectional data are acquired, it is possible to determine the position where the embedded pipe is present with higher accuracy than in the case where two pieces of cross-sectional data are used.

A further characteristic configuration is that the highlighting unit is
The greater the number of the cross-sectional data in which the embedded pipe marker exists within the allowable range when extracting the emphasized embedded pipe marker, the higher the possibility that the embedded pipe exists at the position of the emphasized embedded pipe marker. As shown, the highlighted buried pipe marker is highlighted.

According to the above characteristic configuration, the highlighting unit is located at a position within an allowable range across a plurality of cross-section data, that is, the embedded tube marker is increased as the number of cross-section data existing at substantially the same position is larger. Highlight. Therefore, even when there are multiple embedding pipe markers, the embedding pipes are easily displayed without the help of an expert, since the highlighting of the embedding pipes that are more likely to actually exist is highlighted. You can figure out where to get.
That is, even if there is no expert, it is possible to provide an exploration device that can easily confirm the position of the buried pipe at the work site only by an operator who handles the exploration device.

  Further, another feature configuration is that the setting of the embedded pipe marker and the highlighted display of the highlighted embedded pipe marker in the cross-sectional data, the setting of the embedded pipe marker by the marker setting unit, and the highlighted embedding by the highlighted display unit A manual setting unit that can be manually set independently of the highlighting by the tube marker is provided.

  According to the above characteristic configuration, the setting target of the buried pipe marker, the presence / absence of the highlighted display of the emphasized buried pipe marker, and the degree of enhancement can be set and canceled by the operator's judgment. In other words, even if the embedding buried pipe marker cannot be correctly identified in the control unit of the exploration device, the operator can correct the emphasis display result based on the judgment at that location. Thus, for example, if the worker knows in advance that there is a place where the formation has changed within the search range and the buried pipe marker is set by mistake, the setting of the buried pipe marker is canceled. In addition, the position of the buried pipe can be easily grasped from the cross-sectional data in which the highlighting is reset. Therefore, it is possible to provide an exploration device that makes it possible to more easily confirm the position of the buried pipe.

  Furthermore, another characteristic configuration includes a marker non-display unit that hides the buried pipe marker other than the buried pipe marker set at a position where the possibility that the buried pipe exists is high in the cross-sectional data. It is in.

  According to the above characteristic configuration, the buried pipe marker set at a position where the possibility that the buried pipe exists is low is hidden by the marker non-display unit. That is, the buried pipe marker is displayed only at a position where the buried pipe can exist. Therefore, even if there is no expert, it is possible to provide an exploration device that allows the position of the buried pipe to be more easily confirmed at the work site by only an operator who handles the exploration device.

  A further characteristic configuration is that a buried pipe display unit that displays a sectional view of the buried pipe at the position of the emphasized buried pipe marker is provided.

  According to the above characteristic configuration, the cross-sectional view of the buried pipe is displayed at the position of the emphasized buried pipe marker, which is a position where there is a high possibility that the buried pipe exists. Therefore, it is possible to provide an exploration device that enables the operator to more easily check the position of the buried pipe.

  According to a further feature, the allowable range is based on a displacement of the buried pipe marker that may be caused by an inclination of the buried pipe embedded in the search range and a deviation of the buried pipe marker that may be caused by a measurement error of an exploration device. It is in the point determined by.

  According to the above feature configuration, the embedding marker to be highlighted by the highlighting unit can be suitably extracted by the marker extracting unit.

Outline diagram of exploration equipment Block diagram showing the configuration of the exploration device The figure which shows the extraction method of a highlight buried pipe marker, and a highlight display method Schematic diagram showing conventional cross-sectional data

1. Outline of Exploration Device As shown in FIGS. 1 and 2, the exploration device 3 according to the embodiment of the present invention is set in a search range SA including an embedded pipe X that is manually pushed by an operator and buried in the ground. Scanning is performed along the scanning line SL. When the scanning device 3 is scanned along the scan line SL, the search device 3 emits a search electromagnetic wave toward the ground, processes a reflected wave of the search electromagnetic wave, and in a vertical sectional view including the scan line SL. The control part 30 for acquiring the cross-sectional data P which shows the burial condition of the burial pipe X is provided. Further, the control unit 30 is configured to display the cross-sectional data P on the display unit 32 installed at the top of the exploration device 3.

  More specifically, the exploration device 3 is a hand-held or self-propelled radar exploration device, and follows a scanning line SL set in a predetermined search range SA that is an object of exploration work for the buried object including the buried pipe X. And run. The exploration device 3 emits exploration electromagnetic waves from the antenna 31 into the ground while traveling. If a buried object such as a buried pipe X exists in the propagation path of the radiated electromagnetic wave, it is reflected there. The reflected wave that is reflected and returned is processed by the control unit 30 and used as cross-sectional data P for evaluating the presence of the target buried object (buried pipe X).

  The cross section data P is subjected to appropriate image processing by the control unit 30 and visualized on the display unit 32 as cross section data P as shown in FIG. The operator can grasp the underground position of the buried pipe X to be worked from the cross-sectional data P displayed on the display unit 32.

  The search range SA is generally a specific section such as a sidewalk or a road in the jurisdiction area, and the scanning line SL is set in a pattern predetermined within the search range SA. At this time, a reference marker M that defines the scanning line SL is given to the ground surface of the search range SA as an index.

  Here, the reference marker M that defines the scanning line SL is, for example, characters or symbols indicating the starting point, the middle point, or the ending point of the scanning line SL, and may be drawn directly on the ground surface with chalk or paint. A marker such as a triangular cone may be placed on the ground. Alternatively, the reference marker M that defines the scanning line SL can be created by a method of drawing a line indicating the scanning line SL or a method of placing a rope. That is, it is important that the actual scanning position and the search data at the scanning position are related by the position of the ground surface of the reference marker M.

  In the example of FIG. 1, the reference marker M (M1, M2, M3) is made of chalk on the ground, which is composed of black circles and arrows indicating the operation directions at the starting points of the three scanning lines SL (SL1, SL2, SL3). It is a drawn index.

  In the present embodiment, the search device 3 scans a plurality of scanning lines SL that are parallel to each other in the search range SA and have the same length. More specifically, at least three scanning lines SL (SL1 to SL3) are scanned, and cross-sectional data P is obtained for each of the scanning lines SL1 to SL3.

  The interval L between the scanning lines SL is determined based on the state of the buried pipe X existing under the search range SA. Specifically, for example, it may be provided at intervals of 50 cm. Note that when the embedded state of the embedded pipe X is known in advance (for example, when it is determined that the embedded pipe X exists in a straight line over a long distance), the embedded pipe X may be provided at wider intervals.

2. Detailed Configuration of Search Device As shown in FIG. 2, the search device 3 includes an antenna 31, a control unit 30, and a display unit 32. The control unit 30 performs signal processing on the electromagnetic wave received by the antenna 31, and the display unit 32 displays the cross-sectional data P signal-processed by the control unit 30 to the worker in a visualized form.

2-1. Antenna The antenna 31 of the exploration device 3 is preferably composed of a plurality of antenna elements. The exploration device 3 transmits a pulsed electromagnetic wave in the microwave region through the antenna 31 to the ground at a predetermined repetition frequency and a transmission unit (both not shown) and the antenna 31 from the ground. A receiving unit (not shown) that receives the reflected wave reflected is provided.

  By the way, the exploration device 3 is moved along the scanning line SL set from the reference marker M, which is an index drawn on the ground with chalk, or from the reference marker M as a starting point. The exploration device 3 is equipped with a position detection sensor unit (not shown) for detecting the movement distance or the movement point. This position data is sent to the control unit 30 and combined with the reflected wave reflected from the ground, and used to create the cross-sectional data P. The position detection sensor unit can be easily constructed by a rotary encoder connected to the traveling wheel, but may be constructed by GPS or a gyro.

2-2. Display Unit The display unit 32 includes a flat panel display that displays the cross-sectional data P in a form that can be visually confirmed by an operator. Specifically, the cross section data P is visualized and displayed on the flat display panel in the form shown in FIG. As shown in FIG. 1B, the flat panel display is provided on the upper surface of the exploration device 3 in an inclined posture so that it can be clearly seen by an operator who manually pushes the exploration device 3.

2-3. Control Unit The exploration device 3 appropriately amplifies the reception signal received by the reception unit, and performs signal processing by the control unit 30 so that the amplified reception signal can be displayed on the display unit 32. The control unit 30 has a cross-section data acquisition unit 40 that acquires the cross-section data P, each unit (41 to 43) for highlight processing so that an operator can easily grasp the position of the embedded pipe X, and a highlight display. And an emphasis display adjustment unit 50 for further adjusting the cross-sectional data P.

  Hereinafter, in order to make the description easy to understand, the present embodiment will be described on the assumption that the cross-sectional data P is visualized in the form of the schematic diagram shown in FIG.

  When the operator scans the scanning device 3 on a plurality of scanning lines SL parallel to each other in the search range SA, the cross-section data acquisition unit 40 acquires the cross-section data P for each of the scan lines SL. As described above, the cross-section data P is created (acquired) by the control unit 30 based on the reception signals received by the position detection sensor unit and the reception unit. The cross-sectional data P is data in which the intensity of the reflected wave at each spatial position (combination of the position on the scanning line SL and the depth of the ground) is recorded. For example, as shown in FIGS. The horizontal axis represents the position on the scanning line SL, and the vertical axis represents the underground depth.

  The marker setting unit 41 sets the embedded tube marker m at a position where the embedded tube X may exist in the cross-sectional data P in each of the cross-sectional data P acquired by the cross-sectional data acquiring unit 40. The buried pipe marker m is information indicating that there is a high possibility that the buried pipe X exists in the set spatial position.

  For example, FIG. 3A will be described as an example. FIG. 3A shows only the portion of the cross-sectional data P where the intensity distribution of the reflected wave is formed in an arc shape. Further, the portion where the intensity of the reflected wave is strong is indicated by a thick line. As shown to Fig.3 (a), the marker setting part 41 sets the buried pipe marker m in the location where the intensity | strength of a reflected wave appears strongly. Specifically, as the buried pipe marker m, a1 and a2 are set in the cross section data Pa, b1 to b3 in the cross section data Pb, and c1, c4, and c5 are set in the cross section data Pc.

  The marker extraction unit 42 extracts, as an embedding embedded tube marker mE, a portion with a higher possibility of the existence of the embedded tube X from the embedded tube marker m set by the marker setting unit 41. The highlighting display unit 43 highlights the embedding embedded tube marker mE so that the embedding embedded tube marker mE stands out from the other embedded tube marker m when the cross-sectional data P is visualized. Below, the marker extraction part 42 and the highlight display part 43 are explained in full detail.

2-3-1. Marker extraction unit The marker extraction unit 42 extracts the embedding buried pipe marker mE in a form in which one cross-section data P and another cross-section data P are superimposed. Specifically, when the buried pipe marker m exists in the other cross-sectional data P within the allowable range AA defined for the position of the one buried pipe marker m in the one cross-sectional data P, the buried pipe The marker m is extracted as the embedding buried pipe marker mE.

  Here, since the scanning lines SL provided in the search range SA are parallel to each other and all have the same length, the plurality of cross-section data P acquired by the cross-section data acquisition unit 40 are all the same size. . For this reason, it is possible to determine where the embedded tube X exists on the cross section including the scanning line SL from the overlapping state of the embedded tube marker m when the cross-sectional data P is superimposed.

  In the present embodiment, the allowable range AA is defined as a range within a predetermined distance with the position of one buried pipe marker m as the center. Specifically, as shown in FIG. 3B, it is defined as a circular region having a radius r centered on the position of one buried pipe marker m. Note that the size of the radius r is set in advance and takes the same value in all the cross-section data P.

  The size of the allowable range AA may be determined based on the measurement error of the exploration device 3. More specifically, the size of the allowable range AA is assumed in each of the horizontal axis direction (direction along the scanning line SL) and the vertical axis direction (ground depth direction) in the cross-sectional data P shown in FIG. It is better to decide based on the error.

  Specifically, the error assumed in the horizontal axis direction is determined based on the horizontal width of the cross-sectional data P shown in FIG. 3A and the accuracy of the position detection sensor unit (distance encoder). For example, when the accuracy of the distance encoder is 0.5%, the distance accuracy is assumed to be 1%, assuming a slight meandering condition when the exploration device 3 travels on the scanning line SL. When the lateral width of the cross-sectional data P shown in FIG. 3A is 15 m, ± 15 cm obtained by multiplying this by a distance accuracy of 1% is determined as the required allowable range AA.

  Further, the error assumed in the vertical axis direction is determined based on the vertical width of the cross-sectional data P shown in FIG. 3A and the relative dielectric constant in the soil. If the exploration area is the same, the influence of moisture content is more dominant than the difference in soil. For example, in an area where the relative permittivity is about 10 to 18, assuming that the relative permittivity is air = 1 and water = 80, it is assumed that the relative permittivity generally changes by 10%. Therefore, if the longitudinal width of the cross-sectional data P shown in FIG. 3A is 1 m, ± 10 cm is determined as the required allowable range AA.

  The size of the allowable range AA is determined so as to allow an error assumed in the horizontal axis direction in the cross-sectional data P and an error assumed in the vertical axis direction. In the present embodiment, the allowable range AA is determined according to a direction in which the error is larger. That is, it is determined to be a circular region with an error of ± 15 cm assumed in the horizontal axis direction. Here, when the cross-sectional data P is displayed on the display unit 32, if it is 1.5 cm / pixel, the allowable range AA is a circular region of 10 pixels.

The operation of the marker extraction unit 42 will be described with reference to FIG.
(1) First, section data P (Pa) of 1 is selected.
(2) One buried pipe marker m (a1) is selected from the selected cross-sectional data P.
(3) In the form in which the other cross-sectional data P (Pb, Pc) is superimposed on the cross-sectional data P (Pa) of one, the other cross-sectional data P ( It is checked whether the buried pipe marker m in Pb, Pc) is included.
(4) When there is an embedded pipe marker m of another cross-sectional data P within the allowable range AA, one embedded pipe marker m (a1) is set as an emphasized embedded pipe marker mE.

  By performing the processes (1) to (4) on all the cross-section data P acquired by the cross-section data acquisition unit 40, the embedding embedded pipe marker for all the embedded pipe markers m included in each cross-section data P. Whether to set mE is determined. For example, in the case of FIG. 3A, among the buried pipe markers m, a1, a2, b1, b2, and c1 are set as the emphasized buried pipe markers mE.

  As described above, the embedding buried pipe marker mE is extracted from the buried pipe marker m.

2-3-2. Highlight Display Unit The highlight display unit 43 has a higher possibility that the embedded tube X exists at the position of the highlighted embedded tube marker mE as the embedded tube marker m of the other cross-sectional data P exists in the allowable range AA. As shown, the embedding buried pipe marker mE is highlighted. More specifically, with respect to one emphasized embedded pipe marker mE, the greater the number of cross-sectional data P in which the embedded pipe marker m exists within the allowable range AA when the marker extracting unit 42 extracts the emphasized embedded pipe marker mE, the more emphasized indicate.

  That is, the highlighting unit 43 performs highlighting so that the buried pipe marker m (emphasized buried pipe marker mE) that can be regarded as the same position in more cross-sectional data P is most noticeable.

Specifically, in the present embodiment, color classification is performed as shown in the following table according to the number of cross-sectional data P in which the embedded pipe marker m exists within the allowable range AA of the radius r.

  Note that the highlighting method is not limited to the method of changing the color of the embedding buried pipe marker mE, and the emphasizing buried pipe marker mE in the state displayed on the display unit 32 is changed in size. Various methods such as blinking may be used. Further, instead of highlighting the embedding buried pipe marker mE, an arc in which the embedding buried pipe marker mE is set may be highlighted.

2-3-3. Highlight Display Adjustment Unit In the present embodiment, as shown in FIG. 2, the cross section data P highlighted by the highlight display unit 43 is configured to be adjustable by the highlight display adjustment unit 50. The control unit 30 of the exploration device 3 includes an embedded pipe display unit 51, a manual setting unit 52, and a marker non-display unit 53 as the highlight display adjustment unit 50.

  The buried pipe display unit 51 displays a cross-sectional view of the buried pipe X at the position of the emphasized buried pipe marker mE. More specifically, for example, in all of the plurality of cross-section data P acquired by the cross-section data acquisition unit 40, only when the embedding buried pipe marker mE exists within the allowable range AA (within the radius r), the emphasizing embedding is performed. A cross-sectional view of the buried pipe X may be displayed at the position of the pipe marker mE.

  The manual setting unit 52 sets the embedded pipe marker m and the emphasis display of the embedding embedded pipe marker mE in the cross-sectional data P, sets the embedding pipe marker m by the marker setting unit 41, and the emphasized embedding pipe marker mE by the highlighting display unit 43. Can be set manually independently of highlighting by.

  Specifically, for example, in a state where the cross-sectional data P created by the highlighting unit 43 is once displayed on the display unit 32, the operator can reset the buried pipe marker m by his / her own judgment, The emphasis display of the embedding buried pipe marker mE can be reset. Specifically, ON / OFF of the buried pipe marker m existing in the cross-section data P and the degree of highlighting of the emphasized buried pipe marker mE (in this embodiment, the color of the emphasized buried pipe marker mE) are changed. Configured to be possible.

  When the embedded pipe marker m is manually set by the manual setting unit 52, it is preferable to perform the processing in the marker extraction unit 42 and the highlighting display unit 43 again based on the setting of the embedded pipe marker m. Thereby, when it is thought that the highlighting result by the highlighting display part 43 is different from the actual position of the buried pipe X, the operator can appropriately improve the display of the cross-sectional data P.

  The marker non-display unit 53 hides the buried pipe marker m other than the buried pipe marker m set at a position where the possibility that the buried pipe X is present in the cross-sectional data P. That is, by displaying only the buried pipe marker m (and the emphasized buried pipe marker mE) at a position where there is a high possibility that the buried pipe X exists, the operator can easily grasp the position of the buried pipe X.

  Specifically, for example, the marker non-display unit 53 displays, for each cross-sectional data P, only the enhanced embedding pipe marker mE having a high possibility that the embedding pipe X exists among the embedding buried pipe markers mE. And good. That is, only the higher-level embedding pipe marker mE having a large number of cross-sectional data P in which the embedding pipe marker m exists within the allowable range AA when the emphasis embedding pipe marker mE is extracted by the marker extraction unit 42 is displayed. For example, only a predetermined number at the top is displayed. The predetermined number here may be set to the number of buried pipes X that may exist within the search range SA.

  It should be noted that the function of each part of the highlighting adjustment unit 50 is preferably configured so that the operator can switch between valid and invalid as necessary.

  With the above configuration, it is possible to provide the exploration device 3 that allows the position of the buried pipe X to be easily confirmed at the work site by only the operator who handles the exploration device 3 without an expert.

[Other Embodiments]
(1) In the above embodiment, the buried pipe marker m is set at the apex of the arc-shaped portion, but it may be set at another location that indicates a location where the intensity of the reflected wave appears strongly. . For example, when the buried pipe X is likely to exist, the buried pipe marker m may be set at the center position of the buried pipe X.

(2) In the above-described embodiment, an example in which visualized image data is used as the cross-sectional data P is shown. However, the cross-sectional data P is not visualized data (the intensity of the reflected wave for each spatial position is arbitrarily set). (Data recorded in the form of) may be left as it is. In this case, the image data may be converted to image data visualized before the cross-sectional data P is displayed on the display unit 32, for example, before the highlighting adjustment unit 50.

(3) Each function of the exploration device 3 may be divided into separate units or may be integrated. Further, a part of the function may be arranged on a server existing over the network, and the function may be used by appropriately communicating with the server.

(4) In the above embodiment, as an example when the cross-sectional data P is visualized, as shown in FIG. 3A, only an arc-shaped intensity distribution in which the embedded pipe X may exist is displayed. However, the display method when the cross-sectional data P is visualized is not limited to this. For example, when the cross-sectional data P is visualized, as shown in FIG. 4, a non-arc-shaped intensity distribution in which there is no possibility of the embedded pipe X may be displayed together.

(5) Although the case where the number of scanning lines SL is three has been described as an example in the above embodiment, the number of scanning lines SL may be two, or four or more.

  The present invention can be used as an exploration device that enables only the operator who handles the exploration device to easily confirm the position of the buried pipe at the work site without an expert.

3: Exploration device 30: Control unit 32: Display unit 40: Section data acquisition unit 41: Marker setting unit 42: Marker extraction unit 43: Emphasis display unit 51: Buried tube display unit 52: Manual setting unit 53: Marker non-display unit AA: Allowable range P: Cross section data Pa: Cross section data Pb: Cross section data Pc: Cross section data SA: Search range SL: Scan line SL1: Scan line SL2: Scan line SL3: Scan line X: Buried pipe m: Buried pipe marker mE : Emphasized buried pipe marker

Claims (6)

When scanning along the scanning line set in the search range including the buried pipe buried in the ground, the reflected wave of the electromagnetic wave for exploration radiated toward the ground is processed, and the vertical including the scanning line is processed. Obtaining cross-sectional data indicating the burial status of the buried pipe in cross-sectional view, an exploration device comprising a control unit that displays the cross-sectional data on a display unit,
A plurality of scanning lines parallel to each other in the search range, and a cross-sectional data acquisition unit that acquires the cross-sectional data for each of the scanning lines;
In each of the cross-sectional data acquired by the cross-sectional data acquisition unit, a marker setting unit that sets an embedded pipe marker at a position where the embedded pipe may exist in the cross-sectional data,
When the embedded pipe marker exists in the other cross-sectional data in a form that is superimposed on the cross-sectional data of the one in an allowable range defined in advance with respect to the position of the one of the embedded pipe marker in the cross-sectional data of one A marker extraction unit that extracts one buried pipe marker in the cross-sectional data of the one as an emphasized buried pipe marker;
A highlighting unit that highlights the highlighted buried pipe marker ,
The section data obtaining unit scans at least three of said scanning lines, locator you get the cross-sectional data for each said scan line. The highlight section is
The greater the number of the cross-sectional data in which the embedded pipe marker exists within the allowable range when extracting the emphasized embedded pipe marker, the higher the possibility that the embedded pipe exists at the position of the emphasized embedded pipe marker. The exploration device according to claim 1, wherein the highlighted buried pipe marker is highlighted as shown.   The setting of the buried pipe marker and the highlighted display of the highlighted buried pipe marker in the cross-sectional data are independent of the setting of the buried pipe marker by the marker setting unit and the highlighted display by the highlighted buried pipe marker by the highlighted display unit. The exploration device according to claim 1, further comprising a manual setting unit that can be manually set.   4. The marker non-display unit that hides the buried pipe marker other than the buried pipe marker set at a position where the possibility that the buried pipe exists is high in the cross-sectional data. The exploration device according to item.   The exploration device according to any one of claims 1 to 4, further comprising a buried pipe display unit that displays a cross-sectional view of the buried pipe at a position of the emphasized buried pipe marker. The allowable range, exploration device according to any one of claims 1 to 5, which is determined based on the measurement error of the locator.

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