JP7455693B2 - Mobility support equipment, gas detection equipment - Google Patents

Description

The present invention relates to a movement support device that supports movement on a road surface when performing work related to gas pipes buried in roads, and a gas detection device that detects gas leaks.

Patent Document 1 discloses an LD spectroscopic gas detection device that allows a laser beam to pass through a gas to be measured and detects a predetermined gas in the gas based on a change in the intensity of the laser beam that has passed, and a current position and a display control device that displays, based on the output of the positioning device, a location where the predetermined gas is detected by the LD spectroscopic gas detection device, mounted on a moving body. A gas detection device is described.

Note that Patent Document 1 discloses a mobile positioning device for measuring the position of a vehicle using a GPS (Global Positioning System), as well as information such as electronic map information and the buried position of gas pipes, as well as displaying gas leak detection positions, etc. It is equipped with a mobile GIS "Geographic information system" that serves as a display control device.Mobile GIS holds electronic map information such as the buried status of gas pipelines, and can be obtained through communication lines. It is described that gas detection information and position information are displayed on an electronic map in real time according to the information obtained.

Under the Gas Business Law, gas pipelines buried underground must be periodically checked to ensure that there are no gas leaks (gas leak inspection).

For reference, in Patent Document 2, the position and speed of the vehicle being measured are detected using GPS, data on the measured gas and position speed are recorded, and the position where the gas leak occurred is recorded as data. The technology has been disclosed.

By the way, the worker performs the gas leak inspection while paying attention to the surrounding traffic environment. For example, a worker may patrol while walking, not only using a vehicle as described in Patent Document 1 and Patent Document 2, but also using a cart-type gas detector.

In addition, in gas leakage inspections, it is necessary to focus on inspecting areas near pavement joints (grooves with traces of repair) and around manholes, etc., so road surface monitoring (understanding the targets of alerts) is important.

Japanese Patent Application Publication No. 11-72411 Japanese Patent Application Publication No. 10-300619

However, for example, the position is specified using the GPS described in Patent Document 1, etc., and a map of the current position is displayed on the monitor in real time. Even if it is possible to superimpose and display gas pipe positions on the map image displayed above using known technology, this is insufficient for road surface monitoring.

In other words, unless a worker goes to the site and visually confirms the object to be alerted to, such as a repair trace or a manhole, it is difficult to identify the presence or absence of the object to be alerted to, such as a manhole, or the location thereof.

The present invention automatically determines the attention target from images taken at the work site and superimposes the display in the worker's field of view, thereby informing the worker of the presence and location of the attention target. The purpose is to obtain a mobility support device and a gas detection device that can be used.

The movement support device according to the present invention is a movement support device for moving a gas detector main body that inspects the presence or absence of gas leakage from a gas pipe buried in a road surface, and the device is a movement support device for moving a gas detector main body that inspects for gas leakage from a gas pipe buried in a road surface. an imaging unit that photographs a gas leakage inspection area by the gas detector main body in accordance with changes in the gas leakage detection area; a specifying unit that specifies positional information of the movement support device ; and based on the positional information specified by the specifying unit, an acquisition unit that acquires buried position information of the gas pipe; an extraction unit that analyzes an image of the imaging area taken by the imaging unit and extracts a predetermined caution target; a reading unit that reads the alerting information set for the alerting target; a display unit that does not obstruct the visual field of the worker and is sequentially assigned positional coordinates equivalent to positional coordinates of a changing range of the visual field; The display device includes a display control unit that performs control to display, on the display unit, the buried position information acquired by the acquisition unit and the alert information read out by the reading unit.

According to the present invention, it is possible to monitor the road surface by following changes in the worker's visual field without relying on the worker's visual observation during conduit gas related construction on the road surface, and within the range of the worker's visual field. Automatically searches for predetermined warning targets (manholes, etc.) in the area and displays them in a superimposed manner.

Therefore, it is possible to notify the worker of the presence or absence and location of the object to be alerted to.

The present invention is characterized in that the buried position information and the alerting information are superimposed on the display section with the position information matching the real image that the worker sees through the display section.

For example, if a lens such as smart glasses is used as a display unit, the embedded position information and alert information can be superimposed on the display device on the real image that the worker sees through the lens, thereby providing alert information to the worker. The communication of information becomes reliable.

In the present invention, the display control section displays the gas leakage inspection area image photographed by the photographing section on the display section as a visual field image instead of the real image seen by the worker, and , the buried position information and the warning information are displayed in a superimposed manner.

Instead of the real image, an image photographed by the photographing unit is displayed on the display device, and embedded position information and attention-calling information are superimposed and displayed on the photographed image. For example, VR (Virtual Reality) goggles and the like are applicable.

The present invention is characterized in that the target for attention is a gas leak monitoring position including a manhole installed on a road surface and a repair groove generated during road surface repair.

During gas leak inspections, in consideration of the fact that gas leaks are noticeable from the gaps between gas pipes and the road surface, we will call attention to important monitoring points, including manholes installed on the road surface and repair grooves that occur during road surface repairs. By making it a target, the usefulness and reliability of gas leak inspection can be improved.

A gas detection device according to the present invention includes a gas detector body for inspecting the presence or absence of gas leakage from a gas pipe buried in a road surface, and a movement support device for moving the gas detector body. a photographing unit that photographs a gas leak inspection area by the gas detector body in accordance with a change in the field of view during a gas leak inspection, a specifying unit that specifies position information of the movement support device , and a position specified by the specifying unit. an acquisition unit that acquires buried position information of the gas pipe based on the information; an extraction unit that analyzes an image of the imaging area taken by the imaging unit and extracts a predetermined alert target; a reading unit that reads the alerting information set for the alerting target; a display unit that sequentially assigns positional coordinates equivalent to the positional coordinates of the range of the visual field that does not obstruct the visual field of the worker and changes; and the a display control unit that performs control to display, on a display unit, the buried position information acquired by the acquisition unit and the alert information read out by the reading unit, the gas detector main body; The movable body is equipped with the movement support device and is movable on a road surface along the position where the gas pipe is buried by controlling a drive device.

According to the present invention, in addition to the effects provided by the movement support device, it is possible to improve the efficiency of gas leakage inspection work.

In the present invention, the movable body is characterized in that a worker who monitors gas detection can ride on the movable body.

The burden on workers during gas leak inspection can be reduced.

In the present invention, the mobile body automatically moves along a predetermined travel route based on the buried position information of the gas pipe acquired by the acquisition unit and the position of the attention target extracted by the extraction unit. It is characterized by an automatic driving function that allows it to run at

Automated driving can reduce so-called human errors such as deviation from inspection routes.

As explained above, the present invention automatically identifies the attention target from images taken at the work site, and superimposes the display in the worker's field of view, thereby informing the worker of the presence and location of the attention target. Can be notified.

FIG. 2 is a perspective view showing a state in which the cart-type gas detector according to the present embodiment is used to inspect gas leaks while moving along a gas conduit buried in a road surface. FIG. 2 is an enlarged view of the upper body of the inspector shown in FIG. 1 wearing smart glasses. FIG. 2 is a control block diagram of the movement support device according to the present embodiment. It is a flowchart which shows the flow of image superimposition control in the movement support device concerning this embodiment. (A) is a side view showing a state in which the cart-type gas detector according to the present embodiment is used to inspect gas leaks while moving along a gas pipe buried in the road surface, and (B) is It is a front view of a visual field image seen through smart glasses worn by an inspector. FIG. 7 is a perspective view showing a state in which an inspector is wearing VR goggles as a display device applied as a first modification of the present embodiment. It is a traveling device applied as modification 2 of this embodiment, and is a perspective view showing a state where an inspection device body is mounted and an inspector rides on it. FIG. 7 is a control block diagram of automatic operation control of a traveling device according to a second modification.

FIG. 1 shows an inspector 10, who is a worker inspecting gas leaks, using a cart-type gas detector 12 according to the present embodiment, while moving along a gas conduit 14 buried in a road surface RS. This shows a state in which a gas leak is being inspected. Note that the gas pipe 14 refers to a gas pipe buried in a road among all gas pipes including those piped within the premises of a house.

The cart-type gas detector 12 includes a tester main body 16 that determines whether there is a gas leak from the gas pipe 14 by sucking gas floating on the road surface RS and analyzing the sucked gas components; , a pair of left and right wheels 18 that are movable while maintaining a predetermined distance from the road surface RS, and a pair of left and right wheels 18 that protrude above the road surface RS from the tester body 16, and are held by the inspector 10 to hold the tester main body 16. The handle portion 20 is configured to be moved.

A monitor section (not shown) is attached to the handle section 20 to display the gas leakage determination result etc. by the inspection device main body 16, and the inspector 10 moves along the gas conduit 14 buried in the road surface RS. At the same time, gas leakage inspection is performed by monitoring this monitor unit. Note that the monitor may be attached to the upper part of the tester main body 16.

Here, in this embodiment, the inspector 10 carries out the gas leakage inspection while wearing smart glasses 22 equipped with a movement support function. The movement support function supports movement along the gas conduit 14, and is provided in the smart glasses 22 as a movement support device 24 (see FIG. 2) (details will be described later).

For example, as a comparative example to the present embodiment, the inspector 10 holds a drawing in which a piping diagram of the gas conduit 14, etc. is described in one hand, grasps the handle part 20 with the other hand, and moves around the surroundings. Moved paying attention to objects in the environment that called for attention.

On the other hand, in the present embodiment, the movement support device 24 guides the inspector 10 to the buried position of the gas pipe 14 and monitors objects to be alerted to in the surrounding environment. It has a function to notify.

As shown in FIG. 2, the movement support device 24 installed in the smart glasses 22 is built into the frame 22F of the smart glasses 22. A pair of openings are provided in the frame 22F to match the positions of the eyes of the wearer (inspector 10), and lenses 22L are attached to each opening.

The lens 22L has the original function of allowing the inspector 10 to visually see the actual site (real image) when worn, and also serves as a display device 22A (see FIG. 3) that displays information based on instructions from the movement support device 24. functions as

FIG. 3 is a control block diagram of the movement support device 24 according to this embodiment.

As described above, in the movement support device 24 of this embodiment, the main control system device is provided in the frame 22F (see FIG. 2) of the smart glasses 22, and the display device 22A is also used as the lens 22L. .

As shown in FIG. 3, the movement support device 24 includes a photographing device 26 and a GPS antenna 28 as input devices.

(Photography device processing system)

The photographing device 26 is composed of, for example, a CCD camera or the like, and is attached to the frame 22F so that the photographing optical axis is substantially parallel to the optical axis of the lens 22L. In other words, the imaging optical axis is displaced to follow the direction of the face of the inspector 10 wearing the smart glasses 22.

The photographing device 26 is connected to an image analysis section 30, and the image information photographed by the photographing device 26 is analyzed by the image analysis section 30. As an example of image analysis in the image analysis unit 30, the image is divided into regions based on image information, machine learning is performed based on a predetermined labeling list, and image types (buildings, roads, vehicles, and features existing in the captured image range) are analyzed. It is possible to apply a method such as classifying images (images, etc.). Note that the image analysis technique is not particularly limited.

The analysis result by the image analysis section 30 is sent to the attention-calling target image extraction section 32. Information regarding the attention target is registered in advance in the attention target image extraction unit 32, and from among the image types analyzed by the image analysis unit 30, an example image is selected as a characteristic image where gas leakage is likely to occur on the road surface RS. , "pavement trace images", "manhole images", etc. are extracted. Note that although the pavement traces and manholes will be described below as gas leak intensive monitoring positions, the gas leak intensive monitoring positions are not limited to these pavement traces and manholes.

The attention target image extraction unit 32 is connected to the attention information reading unit 34, and sends out extracted characteristic images (pavement trace images, manhole images, etc.).

The alerting information reading unit 34 is connected to the alerting information database 36, reads alerting information (message, etc.) from the alerting information database 36 based on the characteristic image, and sends it to the image superimposing unit 38.

Note that the alert information database 36 may not be installed in the mobility support device 24, but may be cloud-based so that information can be obtained from the outside using a communication function with the mobility support device 24. .

(GPS antenna processing system)

On the other hand, the GPS antenna 28 receives radio waves from a plurality of GPS satellites (space segments) in the positioning system and sends them to the position information acquisition unit 40 . The position information acquisition unit 40 calculates the current position based on the received radio waves (time information received from at least three, preferably four GPS satellites) and sends it to the gas pipe position information reading unit 42.

The gas conduit position information reading section 42 is connected to a gas conduit position information database 44 . The gas pipe position information database 44 stores piping diagram information of gas pipes buried in the road surface RS in the entire gas leak inspection jurisdiction area. The gas conduit position information reading unit 42 reads out a piping diagram of the gas conduit based on the position information acquired from the position information acquisition unit 40 and sends it to the image superimposing unit 38 .

Note that the gas pipe position information database 44 may not be installed in the movement support device 24, but may be cloud-based so that information can be obtained from outside using the communication function with the movement support device 24. good.

The image superimposition unit 38 reads out the attention target image from the attention target image extraction unit 32 and generates a gas leak inspection route image 50 (see FIG. 5(B)) taking the attention target into consideration.

The image superimposing unit 38 also uses the gas leak inspection route image 50 read out and generated from the alert target image extracting unit 32 and an image based on the alert information acquired from the alert information reading unit 34 of the photographing device processing system. The evocation information image 52) and the gas pipe piping diagram image acquired from the gas pipe position information reading unit 42 of the GPS processing system are superimposed.

The superimposed image is output to the display device 22A (lens 22L) via the output unit 46, and the superimposed image is displayed on the display device 22A.

At this time, the lens 22L of the smart glasses 22 uses its original function (lens function) to follow the real image that the inspector 10 is actually viewing, that is, to match the relative positional relationship. A superimposed image is displayed, and objects that cannot actually be seen, such as a buried gas pipe image and a gas leak inspection route image 50 (see FIG. 5(B)), are displayed in contrast to the real image, as well as objects that call for attention. Alert information is displayed that indicates the

The operation of this embodiment will be explained below.

First, the flow of image superimposition control in the movement support device 24 will be explained according to the flowchart of FIG.

In step 100, the photographing device 26 starts photographing, and the GPS antenna 28 starts receiving radio waves related to position information, and the process moves to step 102.

In step 102, the image photographed by the photographing device 26 is analyzed, and then the process proceeds to step 104, where an image to be alerted is extracted, and the process proceeds to step 106.

In step 106, the type of the extracted attention-seeking target image is specified, and then the process proceeds to step 108, where attention-seeking information corresponding to the identified type is read.

In the next step 110, gas conduit position information is read based on the GPS position information, and the process moves to step 112.

In step 112, the alert information and gas conduit position information are set at position coordinates that match the relative positional relationship of the real image within the lens 22L. In the next step 114, a gas leak inspection route image 50 (see FIG. 5(B)) is set to the position coordinates that match the relative positional relationship of the real image in the lens 22L, along the gas pipe position information, and in consideration of the alert target. Set.

In the next step 116, the images set in steps 112 and 114 are superimposed, and then the process proceeds to step 118, where the superimposed image is displayed on the display device 22A (lens 22L), and the process proceeds to step 120.

In step 120, it is determined whether the processing has ended or not, and if the determination is negative, the process returns to step 102 and the above steps are repeated.

Further, if an affirmative determination is made in step 120, the process proceeds to step 122, where the photographing by the photographing device 26 is ended, and the radio wave reception by the GPS antenna 28 is ended, and this routine ends.

(Gas leak inspection procedure)

The inspector 10 carries out a gas leak test by pushing and rolling the cart-type gas detector 12 while walking on the road surface RS while wearing smart glasses 22 equipped with a movement support device 24 (Fig. 5 (A) )reference).

The inspector 10 visually observes the real image of the gas leak inspection destination (inspection destination) through the smart glasses 22 (see visual field L in FIG. 5(A)), and simultaneously views the superimposed image produced by the movement support device 24. can be put in.

Here, there may be a paving trace part (here, a repair groove 48A) and a manhole 48B, which are the object of warning for gas leakage, at the gas leak inspection site.

There is a high possibility of gas leaks in the area surrounding the area where the warning is being issued, so it is necessary to focus on inspecting the area. In this case, the object to call attention to is present within the field of view L of the inspector 10, and even though the object is visually observed, the object may be overlooked due to complicated work.

Therefore, in the present embodiment, the movement support device 24 displays a superimposed image on the display device 22A in a state where the inspector 10 viewing the real image through the smart glasses 22 matches the relative positional relationship with the real image. Now displayed.

As shown in FIG. 5(B), the inspector 10, through the lens 22L of the smart glasses 22, displays an image showing the buried position of the gas conduit 14, an alert information image 52, and an alert image, with respect to the real image. An image in which the gas leakage inspection route images 50 are superimposed with consideration given to the target can be brought into view.

That is, for example, the inspector 10 holds a gas conduit piping diagram in one hand, moves while looking at the gas conduit piping diagram, and pays attention to the object in the real image to determine a gas leak inspection route. You will not be forced to do complicated work. Therefore, the inspector 10 using the movement support device 24 of this embodiment can perform a gas leakage inspection along an appropriate gas leakage inspection route.

Further, for example, when the type of extracted image is a manhole 48B, the alert information reading unit 34 reads out a so-called balloon image that indicates the position of the manhole 48B, along with special information such as "Manhole 48B ahead."

A message such as "Important inspection required!" is added to the balloon image in advance, and special information is written in the balloon to generate an alert information image 52 shown in FIG. 5(B).

For example, when the type of extracted image is the repair groove 48A, the alert information reading unit 34 outputs a so-called balloon image that indicates the position of the repair groove 48A, along with special information such as “Repair groove ahead of △m”. read out.

A message such as "Important inspection required!" is added to the balloon image in advance, and special information is written in the balloon to generate an alert information image 52 shown in FIG. 5(B).

In addition, if there are multiple caution targets (repair groove 48A, manhole 48B, etc.), special information for each of them may be written in one balloon image to form one caution information image 52 (see FIG. 5(B). )reference).

(Modification 1)

In this embodiment, by attaching the movement support device 24 to the smart glasses 22 worn by the inspector 10, an image showing the buried position of the gas pipe 14, an attention-calling information image 52, and an attention-calling target are taken into consideration. The image on which the gas leakage inspection route image 50 is superimposed is displayed while matching the relative position of the real image.

On the other hand, in modification example 1, as shown in FIG. 6, VR goggles 54 are used instead of the smart glasses 22.

In the smart glasses 22, a real image (an image viewed by the inspector 10 through the lens 22L of the smart glasses 22) is used, but in the VR goggles 54, the on-site image taken by the photographing device 26 is displayed on the monitor 56, and, An image showing the buried position of the gas conduit 14, a warning information image 52, and a gas leak inspection route image 50 that takes into account the target of the warning are superimposed on this site image.

By applying the VR goggles 54, not only the target of attention but also surrounding traffic information (presence of vehicles and pedestrians) can be extracted through image processing from the image taken with the photographing device 26 and notified to the inspector 10. This makes it possible to ensure the safety of gas leak inspection.

Further, by applying the VR goggles 54, there is no need to perform matching processing on the relative positional relationship with the real image, so the burden of image processing can be reduced.

Note that headphones 58 may be attached to the VR goggles 54 to notify alert information through hearing.

(Modification 2)

In this embodiment, the user moves along the gas leakage inspection route by walking while holding the handle 20 of the cart-type gas detector 12.

On the other hand, in Modification 2, as shown in FIG. 7, the tester main body 16 is configured to be mounted on a traveling device 60 on which the tester 10 can ride. Note that in the case of the second modification, the smart glasses 22 of this embodiment may be used, or the VR goggles 54 of the first modification may be used.

The traveling device 60 may be able to select between a manual operation driving mode and an automatic operation driving mode. Further, it may be used exclusively for manual operation or for automatic operation.

(Manual operation operation mode)

The traveling device 60 is equipped with a drive device 64 (see FIG. 8), such as a motor that drives a pair of wheels 62, for example, and can be steered at the inspector's will, allowing the inspector 10 to walk. becomes unnecessary.

Note that steering operation according to the intention of the inspector 10 means that a remote controller may be attached to the upper end of the handle portion 66, or a function may be provided that allows the inspector 10 to change the traveling speed and method according to the way the inspector 10 applies the center of gravity. good.

(Automatic driving mode)

The traveling device 60 of Modification 2 may be configured to automatically travel along the gas inspection route by controlling the driving of the driving device 64 by the drive control unit 74 by coordinating with the movement support device 24. good.

FIG. 8 is a control block diagram of an automatic driving control device 70 in which the movement support device 24 and the travel control device 68 are combined.

Note that the same configurations (same functional blocks and their information transmission systems) of the mobility support device 24 shown in FIG. 2 are given the same reference numerals, and the description of the configurations will be omitted. Further, in FIG. 8, a case will be described in which smart glasses 22 are applied.

The automatic driving control device 70 includes a travel route setting section 72. The travel route setting section 72 is connected to each of the image analysis section 30, the attention target image extraction section 32, the position information acquisition section 40, and the gas conduit position information reading section 42.

The travel route setting section 72 acquires information regarding surrounding images from the image analysis section 30.

The driving route setting unit 72 acquires information regarding the attention target from the attention target image extraction unit 32.

The driving route setting section 72 acquires position information from the position information acquisition section 40 .

The traveling route setting section 72 acquires gas conduit position information from the gas conduit position information reading section 42 .

The traveling route setting section 72 sets a traveling route for the traveling device 60 based on the information regarding the surrounding image, the information regarding the attention target, the position information, and the gas pipe position information, and sends it to the drive control section 74 .

The drive control section 74 controls the drive device 64 to control the traveling of the traveling device 60.

Note that, as the traveling device 60, a traveling device 60 in which a pair of wheels 62 are attached on the same axis is taken as an example, but a multi-wheeled vehicle (two-wheeled vehicle, tricycle, four-wheeled vehicle, etc.) having different axles in the front and rear directions is used. It may be.

According to the present embodiment, the road surface RS alert target is automatically determined from images taken at the gas leak inspection site, and the alert target is displayed in a superimposed manner within the field of view, thereby informing the inspector 10 of the alert target. It is possible to notify the presence/absence and location of a vehicle. More specifically, the object of attention can be recognized with high accuracy without depending on the visual information of the inspector 10, so the safety of the gas leak inspection work can be improved.

In addition, in this embodiment, the main target is the gas leak inspector 10, and the support and safety of appropriate gas leak inspection is guaranteed, but it can also be used as an information source for gas leak inspection by automatic driving. It is.

10 Inspector (worker)
12 Cart-type gas detector 14 Gas conduit RS Road surface 16 Inspection device body 18 Wheels 20 Handle section 22 Smart glasses 24 Mobility support device 22A Display device (display section)
22F Frame 26 Photography device (photography department)
28 GPS antenna (specific part)
30 Image analysis unit 32 Attention target image extraction unit (extraction unit)
34 Alert information reading section (reading section)
36 Alert information database 38 Image superimposition unit (display control unit)
40 Location information acquisition unit (identification unit)
42 Gas pipe position information reading unit (acquisition unit)
44 Gas pipe position information database 46 Output section 48A Repair groove (target for alert)
48B Manhole (target for alert)
50 Gas leak inspection route image 52 Alert information image 54 VR goggles 56 Monitor 58 Headphones 60 Travel device 62 Wheels 64 Drive device 66 Handle section 68 Travel control device 70 Automatic driving control device 72 Travel route setting section 74 Drive control section

Claims (7)

A movement support device for moving a gas detector body for inspecting the presence or absence of gas leakage from a gas pipe buried in a road surface, the device comprising:
an imaging unit that photographs a gas leak inspection area by the gas detector main body, following changes in the field of view during a gas leak inspection by a worker;
an identification unit that identifies location information of the mobility support device ;
an acquisition unit that acquires buried position information of the gas pipe based on the position information specified by the identification unit;
an extraction unit that analyzes the image of the photographed area photographed by the photographing unit and extracts a predetermined attention target;
a reading unit that reads the alerting information set for the alerting target extracted by the extracting unit;
a display unit that does not obstruct the visual field of the worker and is sequentially assigned positional coordinates equivalent to the positional coordinates of the changing range of the visual field;
a display control unit that performs control to display, on the display unit, the buried position information acquired by the acquisition unit and the alert information read out by the reading unit;
A mobility support device with The movement support device according to claim 1, wherein the buried position information and the alerting information are superimposed on the display unit in a state where the position information matches a real image that the worker sees through the display unit. The display control unit displays the gas leak inspection area image photographed by the photographing unit on the display unit as a visual field image instead of the real image viewed by the worker, and also displays the gas leakage inspection area image photographed by the photographing unit as a visual field image, and also displays the buried position with respect to the visual field image. The movement support device according to claim 1 or 2, wherein the information and the alerting information are displayed in a superimposed manner. The target of the alert is
The movement support device according to any one of claims 1 to 3, which is a key gas leak monitoring position including a manhole installed on a road surface and a repair groove generated during road surface repair. A gas detector body that tests for gas leakage from gas pipes buried in the road surface;
A movement support device for moving the gas detector body, the photographing unit configured to photograph a gas leakage inspection area by the gas detector body by following changes in the field of view during gas leakage inspection by an operator; An identification unit that identifies location information of the support device ; an acquisition unit that acquires buried position information of the gas pipe based on the location information identified by the identification unit; and an analysis unit that analyzes images of the imaging area taken by the imaging unit. an extraction unit that extracts a predetermined attention target, a readout unit that reads out attention information set for the attention target extracted by the extraction unit, and a visual field that does not obstruct and change the visual field of the worker; a display unit to which positional coordinates equivalent to the positional coordinates of the range are sequentially assigned; and a control for displaying, on the display unit, the buried position information acquired by the acquisition unit and the alerting information read out by the reading unit. a movement support device comprising a display control unit that performs
a mobile body on which the gas detector main body and the movement support device are mounted, and which can move on a road surface along a position where the gas pipe is buried by controlling a drive device;
Gas detection device with. 6. The gas detection device according to claim 5, wherein the moving body can be ridden by a worker who monitors gas detection. The mobile body is an automatic vehicle that automatically travels along a predetermined travel route based on the buried position information of the gas pipe acquired by the acquisition unit and the position of the attention target extracted by the extraction unit. The gas detection device according to claim 5, comprising a traveling function.