JP7298921B2 - Infrared Investigation Analysis Diagnosis Device - Google Patents

Description

The present invention relates to an infrared survey analysis diagnostic device. More specifically, it relates to an infrared investigation analysis diagnosis device capable of immediately observing photographed images and analysis results.

Recently, the precision of a temperature sensor (semiconductor device) that can be used in an infrared imaging device has improved, making it possible to separate temperatures down to 0.02°C. Therefore, the inventor developed a high-resolution image analysis method to make the most of the precision of this temperature sensor (see Patent Document 1). According to the technique of Patent Document 1, a highly accurate temperature distribution map of the structure surface with a resolution of 0.013 degrees is acquired for the structure image captured by a normal infrared camera. In addition, current temperature sensors are capable of distinguishing to six digits after the decimal point.

Until now, hammering diagnosis has mainly been used for diagnosis of civil engineering and building structures including infrastructure (public facilities) diagnosis such as tunnels, but it is highly dependent on human power and takes time and effort. In contrast, diagnosis using a small, lightweight, and portable infrared camera is much more efficient because it provides a large amount of data in a single shot. Furthermore, if a portable computer capable of image analysis is used in combination, the photographed images and analysis results can be viewed on a monitor at the survey site, and it is possible to distinguish between the photographed and unphotographed portions of the survey target, making it more efficient and wasteful. You will be able to conduct surveys without It is also possible to bring back the data for more precise and detailed analysis.
In addition, since all objects emit infrared rays, the infrared investigation analysis diagnosis device is not limited to the diagnosis of civil engineering and building structures, and can be applied to the diagnosis of all objects.

Patent Literature 2 discloses that an examiner wearing a camera (visible light camera) on his head and a computer on his chest visits the patient's home, and transmits camera images to a hospital and a pharmacy by computer. However, infrared camera and monitor observation are not disclosed.

Japanese Patent No. 6192749 Japanese Patent Application Laid-Open No. 2002-291706

An object of the present application is to provide an infrared investigation analysis diagnosis device capable of immediately observing captured images and analysis results.

The infrared investigation analysis diagnosis device 1 according to the first aspect of the present invention, for example, as shown in FIGS. 1A, 1B and 2,
an infrared camera 13 for photographing an object to be investigated;
an infrared camera orientation recorder 10 having a position sensor for measuring the position of the infrared camera 13, an orientation sensor for measuring the orientation of the infrared camera 13, and a camera orientation recording unit for recording the position and orientation of the infrared camera 13;
a head-worn device 11 that can be worn on the head of an investigator and detachably mounted with an infrared camera 13 and an infrared camera posture recorder 10;
a computer 22 that acquires and analyzes the image captured by the infrared camera 13;
a computer monitor 23, attachable to the computer 22 directly or via a connecting cord, for displaying captured images and the results of image analysis;
A pedestal 25 on which a computer monitor 23 or a computer 22 equipped with a computer monitor 23 can be mounted in front is attached, and a protector type or vest type body 20 that can be attached and detached by an investigator;
When the computer 22 is not mounted on the pedestal 25, it is stored in a pocket provided on the bodice 20 or fastened to a belt provided on the bodice 20 and held by the bodice 20;
The computer 22 includes a computing unit that computes a survey target region corresponding to the captured image based on the measured position of the infrared camera 13 and the dimensions and inclination of the survey target in the captured image captured by the infrared camera 13; It is characterized by having an image correcting unit capable of correcting an image to an image viewed from the front of the survey object.

Here, the "head-mounted device" includes a helmet type that is worn on the head like a helmet or a cap, a crown type that surrounds the head like a crown or a headband, a goggle type that is worn on the ears like goggles or glasses, and a headphone type. Either of the headphone type that sandwiches both ears may be used. That is, it is sufficient if the infrared camera 13 can be held on any part of the head. Also, in order for the computer 22 to acquire the captured image of the infrared camera 13, it may be directly acquired from the infrared camera 13. For example, the small monitor 12 (for example, a mobile phone) acquires the captured image from the infrared camera 13 and wirelessly You may transmit to a computer via communication or the internet. Also, the tilt sensor is obtained from the tilt of the vertical axis of the infrared camera 13 with respect to gravity or the liquid surface.

With this configuration, it is possible to provide an infrared investigation, analysis, and diagnosis apparatus in which both the infrared camera and the computer for image analysis can be carried, and the photographed image and the analysis result can be immediately observed.

The infrared investigation analysis diagnosis device 1 according to the second aspect of the present invention, in the first aspect,
The position sensor can acquire the position of the infrared camera from a GPS sensor or a geomagnetic sensor,
the attitude sensor can acquire the attitude of the infrared camera from an acceleration sensor or a tilt sensor;
The pedestal 25 is attached to the bodice 20 so that one end of the pedestal 25 operates as a rotating shaft when the bodice 20 is a protector type, and when not in use, one end is folded upward to be close to the bodice 20. When used, the pedestal 25 can be held open at any angle of 60 to 100 degrees from the bodice 20. When the bodice 20 is a vest type, one end of the pedestal 25 acts as a rotating shaft. It is attached to a support frame 24 which is removably attached to the bodice 20 so that it can be folded up at one end and held close to the support frame 24 when not in use, but supports a pedestal 25 when in use. It can be held open at any angle of 60 to 100 degrees from the frame 24 .
With this configuration, the position and orientation of the infrared camera can be obtained with high accuracy. In addition, the investigator can hold the computer monitor in a position where both hands are free and easy to observe.

In the infrared investigation analysis diagnosis device 1 according to the third aspect of the present invention, in the first aspect or the second aspect,
The headwear 11 is characterized by being a helmet type.

Here, the helmet type refers to a type worn on the head like a helmet or a hat.
With this configuration, the head-mounted device 11 can also serve to protect the head, and is suitable for use in tunnels and construction/civil engineering sites.

The infrared investigation analysis diagnosis device 1 according to the fourth aspect of the present invention, in any one of the first aspect to the third aspect,
The infrared camera 13 is characterized in that it can be used by selecting a long-range type, a medium-range type, or a short-range type.
With this configuration, an appropriate viewing angle can be selected according to the distance of the object to be investigated.

The infrared investigation analysis diagnosis device 1 according to the fifth aspect of the present invention, in the fourth aspect,
The infrared camera is further characterized in that it can be used by selecting a drone-mounted cordless type.

Here, in the case of the drone-mounted cordless type, the infrared camera 13 is mounted on the drone for use. In this case, the direction of the infrared camera 13 may be determined and fixed according to the direction of the object to be surveyed, such as downward (or forward in the case of panorama photography). The orientation of the infrared camera 13 may be controlled along with steering. Also, a fisheye lens may be used for panoramic photography.

With this configuration, it is possible to shoot from various distances and directions using a cordless infrared camera mounted on a drone.

An infrared investigation analysis diagnosis device 1C according to a sixth aspect of the present invention includes:
an infrared camera 13A that captures an image of a survey target;
a position sensor for measuring the position of the infrared camera 13A, an orientation sensor for measuring the orientation of the infrared camera 13A, and an infrared camera orientation recorder 10A having a camera orientation recorder for recording the position and orientation of the infrared camera 13A;
A tripod head 26 on which an infrared camera 13A is mounted via an infrared camera attitude recorder 10A.
a computer 22 that acquires and analyzes an image captured by the infrared camera 13A;
a computer monitor 23 attachable to the computer 22 for displaying captured images and the results of image analysis;
The computer 22 has a computing unit that computes a survey target area corresponding to the captured image based on the measured position/orientation of the infrared camera 13A and the dimensions/inclination of the survey target in the captured image captured by the infrared camera 13A. and an image correction unit capable of correcting the photographed image to an image viewed from the front of the survey object.

With this configuration, it is possible to provide an infrared investigation analysis diagnosis device capable of immediately observing captured images and analysis results in a manner suitable for vehicle mounting.

ADVANTAGE OF THE INVENTION According to this invention, the infrared rays investigation analysis diagnosis apparatus which can observe a picked-up image and an analysis result immediately can be provided.

1 is a diagram showing a schematic configuration example of an infrared camera 13 and an infrared camera attitude recorder 10 according to Embodiment 1. FIG. 2 is a diagram showing a configuration example around an infrared camera 13 according to the first embodiment; FIG. FIG. 4 is a diagram showing a configuration example of a protector-type bodice 20A according to Example 1; Examples of photographed images (steeply inclined concrete retaining wall: conventional example (upper) and using a high-precision color palette (lower)) taken by an infrared survey analysis and diagnosis device. These are examples of captured images (concrete elevated road: visible light image (upper left), conventional example (lower left), using a high-precision color palette (right)) taken by an infrared survey analysis diagnostic device. Photographed images taken by an infrared inspection analysis diagnostic device (Concrete tunnel inner wall: using a high-precision color palette (upper left), conventional example (lower left), using a high-precision color palette (enlarged view of the gap on the back side of the side wall, upper right), high-precision color palette Examples of use (lower right), (upper left and lower right have different color palettes, ie, display temperature ranges). Photographed images taken by an infrared inspection analysis diagnostic device (concrete tunnel inner wall: using a high-precision color palette (left, leakage part), using a high-precision color palette (right, void on the back side). FIG. 11 is a diagram showing a configuration example of a vest-type bodice 20B according to Example 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same or similar parts are denoted by the same or similar reference numerals, and redundant explanations are omitted.

1A, 1B, and 2 show a configuration example of a wearable infrared investigation analysis diagnosis device 1 according to this embodiment. In this embodiment, an example in which the bodice 20 is a protector type 20A and the head attachment 11 is a helmet type will be described. The infrared investigation analysis diagnosis device 1 includes an infrared camera 13, an infrared camera attitude recorder 10 having a position sensor, an attitude sensor, and a camera attitude recording unit, a head attachment 11, a computer 22, and a protector type bodice 20. and a computer monitor 23 .

1A and 1B show a configuration example of the infrared camera attitude recorder 10. FIG. FIG. 1A shows a schematic configuration of the infrared camera 13 and the infrared camera attitude recorder 10, and FIG. 1B shows the infrared camera 13 and its surroundings. An ultra-compact infrared camera is used as the infrared camera 13 for photographing the object to be investigated.

The main parts of the infrared camera attitude recorder 10 are a position sensor for measuring the position of the infrared camera 13, an attitude sensor for measuring the attitude of the infrared camera 13, and the measured position of the infrared camera 13 and the calculated infrared camera 13. It is a camera posture recording unit that records the posture of the camera.
The infrared camera attitude recorder 10 is equipped with various sensors, a cordless data transmitter, a lithium battery pack, and the like. The infrared camera 13 is preferably small and lightweight so that it can be easily transported, and in terms of brightness, the lens diameter is preferably 9 to 50 mm, more preferably 19 to 35 mm. For example, the dimensions of an infrared camera with a lens diameter of 25 mm are, for example, 40 mm×40 mm×15 mm.

In order to cover a wide range of distances, the infrared camera 13 is exchangeable for long distance (100m specification), medium distance (50m specification), and short distance (10m specification). In addition, it can be replaced with a drone-mounted cordless type in order to respond to various survey targets. In the case of the drone-mounted cordless type, each infrared camera 13 is mounted on the drone for use. In this case, the direction of the infrared camera 13 may be fixed and held downward (for example, forward in the case of panorama photography) according to the direction of the object to be surveyed. The orientation of the infrared camera 13 may be controlled along with steering.
The digital camera 14 may also be small. Three digital cameras 14 are arranged around the infrared camera 13 in order to align the axis of the digital camera 14 with the axis of the infrared camera 13 . This allows the infrared image and the visible light image to be superimposed.

Among various sensors, a GPS sensor and a geomagnetic sensor are used as position sensors. Geomagnetic sensors are used in places such as tunnels that cannot be measured by GPS. The cordless data transmission device transmits data recorded in the infrared camera attitude recorder 10 to a small monitor 12 (for example, a mobile phone). A lithium battery pack serves as the power source for the infrared camera attitude recorder 10 . A lithium battery is used to ensure long-term operation.
The infrared camera measurement position can be traced in chronological order by the camera orientation recording part data and the position sensor data.

As the head mounting device 11, a helmet type is used in this embodiment. A helmet-shaped helmet made of metal or plastic can also serve to protect the head, and is suitable for use in tunnels and construction/civil engineering sites. The infrared camera 13 and the infrared camera attitude recorder 10 can be detachably attached.
The small monitor 12 can acquire image data taken by the infrared camera 13 and display it on the screen of the small monitor 12 . The folding type can brighten the screen even in the dark, making it easy to see. Also, these data can be transmitted to the computer 22 . Note that the small monitor 12 may be attached to the eaves of the helmet-type head-mounted device 11 so that the photographed image can be observed.
Three buttons are used to send the infrared camera 13 image to the small monitor 12 and computer 22 . The first button stops motion of the infrared camera 13 image. A second button freezes the image of the infrared camera 13 and sends it to the small monitor 12 . Here, "freeze" means that the image is temporarily stopped, and does not mean that the image freezes and does not move. The investigator can observe the image on the small monitor 12 and decide whether it should be transmitted to the computer 22 . A third button sends the image captured on the small monitor 12 to the computer 22 and unfreezes it.

FIG. 2 shows a configuration example of the protector type bodice 20A.
The protector-type bodice 20A has no opening in the abdomen and is covered with the bodice, so that the investigator can put it on. A pedestal 25 on which the computer 22 can be mounted is attached to the abdomen of the bodice 20A. The computer 22 is mounted on a pedestal 25 and fixed to the bodice 20A through the pedestal 25, and the computer 22 is stably held on the pedestal 25 even when walking while wearing the bodice 20A or getting on a vehicle.
The pedestal 25 is attached to the bodice 20A so that one end of the pedestal 25 acts as a rotating shaft when the bodice 20A is of a protector type, and when not in use, one end is folded upward and close to the bodice 20A. Although it is held, it can be held with the pedestal 25 opened at any angle of 60 to 100 degrees from the bodice 20A during use.

In this embodiment, a dedicated personal computer loaded with analysis software is used as the computer 22 . The analysis software is used for image analysis of the image captured by the infrared camera 13 . A calculation unit that calculates a region to be investigated corresponding to the photographed image based on the measured position of the infrared camera 13 and the dimensions and inclination of the investigation object in the photographed image photographed by the infrared camera 13, and the investigation object of the photographed image. It has an image correcting unit capable of correcting an image viewed from the front of the camera.
The computer 22 can be transported even when the pedestal 25 is substantially horizontal and the computer 22 is mounted.
In addition, the computer 22 has a cordless data transmitter, a lithium battery pack, a data storage hybrid hard disk drive (HDD), and means for freezing and releasing detected events.

A computer monitor 23 can be attached to the computer, and displays captured images and image analysis results. If it is used in a portable computer 22 capable of image analysis, captured images and analysis results can be viewed on a computer monitor 23 at the site of investigation. That is, immediate feedback is possible at the research site. In addition, since it is possible to determine whether the survey target has been photographed or not, it is possible to conduct a more efficient and efficient investigation. Whatever the hidden reality of the event being detected, it can capture the details of the symptoms and record the location to take home. Then, highly accurate diagnosis becomes possible.

The merits of using the infrared investigation analysis diagnosis device 1 according to this embodiment are as follows.
(a) The head, hands, and feet are free and can be moved as desired. In addition, it is possible to realize a quick and light independent action.
(b) Highly accurate on-site diagnosis is possible. Therefore, event locations (including subterranean spaces) can be accurately reproduced.
(c) Since the infrared camera 13 and the digital camera 14 can be aligned with each other, the visible light image and the infrared image can be superimposed and displayed.
(d) Since the position of the infrared camera 13 and the attitude of the infrared camera 13 are recorded in the infrared camera orientation recorder 10 in association with time, the measurement position of the infrared camera 13 can be traced in chronological order.
(e) Information transmission data can be transmitted wirelessly.
(f) Discovery events can be frozen instantly.
(g) It can be used for a long time by replacing the battery.
(h) Still images and moving images can be selected.

3, 4, 5A, and 5B show examples of captured images captured by the infrared investigation analysis/diagnosis device 1. FIG.
FIG. 3 shows an example of an infrared image of a steeply sloped concrete retaining wall. FIG. 3 (upper) shows a conventional example, and FIG. 3 (lower) shows a present embodiment using a high-precision color palette. These are infrared thermal radiation distribution images of the embankment recorded from the opposite bank of 500 m across the river. According to this embodiment, since the temperature display has a high resolution, [the shape and depth of the void], [form of moisture impregnation of the backfill ground], [flow state of the ground], [concrete column・Deterioration of beam rows] etc. will be highlighted. In the retaining wall shown in Fig. 3 (bottom), cavities are hidden behind the retaining wall in the 3rd and 4th frames from the left of the upper grid frame, and backfill soil is hidden in the 4th frame from the left in the middle row. A deep water retention state is recognized.

FIG. 4 shows an example of an infrared image of a concrete elevated road. FIG. 4 (upper left) shows a visible image, FIG. 4 (lower left) shows a conventional example, and FIG. 4 (right) shows this embodiment using a high-precision color palette. Similar to FIG. 3, the void, moisture impregnated morphology is shown. Arrows in the figure indicate locations suggesting abnormalities. Due to the high-resolution temperature display, abnormal conditions that were not visible in the past can now be seen in relief.

5A and 5B show examples of infrared photography images of the inner wall of the concrete tunnel according to this embodiment. 5A (bottom left) shows a conventional example, and FIG. 5A (top left) and FIG. Fig. 5A (upper right) is an enlarged view of the gap on the back side of the side wall using a high-precision color palette, Fig. 5B (left) is an image of the leaking part using a high-precision color palette, and Fig. 5B (right) is an image using a high-precision color palette. shows an image of the void on the backside of the side wall of the . Arrows in the figure indicate locations suggesting abnormalities. Due to the high-resolution temperature display, abnormal conditions that were not visible in the past can now be seen in relief.

As described above, according to the present embodiment, it is possible to provide an infrared investigation, analysis, and diagnosis apparatus in which both the infrared camera and the computer for image analysis can be carried, and the photographed image and the analysis result can be immediately observed.

In Example 2, an example in which the bodice is of the vest type 20B will be described. Differences from the first embodiment will be mainly described.

FIG. 6 shows a configuration example of the vest-type bodice 20B.
The vest-type bodice 20B has an opening in the abdomen, and the investigator can put it on by putting the left and right hands through the left and right cuffs, respectively. A pocket for storing the computer 22 is attached to the inside of the back surface of the bodice 20B, and the computer 22 is stored in the pocket and carried. A support frame 24 supporting a computer monitor 23 is attached to the front surface of the bodice 20B with Velcro (registered trademark). A computer monitor 23 can be mounted on the . The computer monitor 23 is held on the bodice 20B via the support frame 24 and the pedestal 25, and the computer 22 is stably kept on the pedestal 25 even if the user walks while wearing the bodice 20B or rides on the vehicle stand. A connection cord from the computer 22 is connected to the computer monitor 23 through the inner side of the bodice 20B.

The pedestal 25 is attached to the lower end of the support frame 24 so that one end of the pedestal 25 acts as a rotating shaft when the bodice 20B is of the vest type, and when not in use, one end is folded upward to allow the support frame 24 , but the pedestal 25 can be held open at any angle between 60 and 100 degrees from the support frame 24 during use. As a result, the investigator can view the screen of the computer monitor 23 at a position in front of the waist that is easy to see and with both hands free.

Other configurations of the infrared investigation, analysis, and diagnosis device 1A are the same as those of the protector-type bodice 20A of the first embodiment. And it is possible to provide an infrared investigation analysis diagnosis device capable of immediately observing analysis results.

Although the embodiments of the present invention have been described above, the embodiments are not limited to the above examples, and it is clear that various modifications can be made without departing from the scope of the present invention.
For example, in the above embodiments, the crown-type and headphone-type head-mounted devices are not described, but these can also be used. In addition, although only the protector type and the vest type have been described for the bodice, various modifications are possible. For example, it is possible to provide a waist pocket, put a battery in a waist pocket, and carry a computer in a chest (inside/outside) or back (inside/outside) pocket. It is also possible to use the computer by hanging it around the neck. If the computer becomes lighter, it can be used by wrapping it around the arm with a belt. In addition, the recorded contents of the infrared camera attitude recorder, the types and specifications of the sensors used, the functions and specifications of the bodice, etc., can be changed as appropriate.

INDUSTRIAL APPLICABILITY The present invention can be used for diagnosing civil engineering and building structures using infrared images. It is also applicable to diagnosis of all objects.

1, 1A to 1C Infrared survey analysis diagnostic device 10, 10A Infrared camera posture recorder 11, 11A Head attachment 12 Small monitor 13, 13A Infrared camera 14 Digital camera 20 Body 20A Body (protector type)
20B bodice (best type)
22 computer 23 computer monitor 24 support frame 25 pedestal 26 platform

Claims (5)

an infrared camera for photographing an object to be investigated;
a position sensor for measuring the position of the infrared camera, an orientation sensor for measuring the orientation of the infrared camera, and an infrared camera orientation recorder having a camera orientation recording unit for recording the position and orientation of the infrared camera;
a head-worn device that can be worn on the head of an investigator and detachably mounted with the infrared camera and the infrared camera attitude recorder;
a computer that acquires and analyzes the image captured by the infrared camera;
a computer monitor that can be attached to the computer directly or via a connection cord and that displays the captured images and the results of the image analysis;
A pedestal on which the computer monitor or the computer equipped with the computer monitor can be mounted on the front is attached, and a protector type or vest type bodice that can be attached and detached by the investigator;
When the computer is not mounted on the pedestal, it is stored in a pocket provided on the bodice or fastened to a belt provided on the bodice and held by the bodice;
The computer calculates an investigation target area corresponding to the photographed image based on the measured position/orientation of the infrared camera and the dimensions/inclination of the investigation object in the photographed image photographed by the infrared camera. and an image correction unit capable of correcting the photographed image to an image viewed from the front of the survey object;
Infrared survey analysis diagnostic equipment. The position sensor can acquire the position of the infrared camera from a GPS sensor or a geomagnetic sensor,
the attitude sensor can obtain the attitude of the infrared camera from an accelerometer or a tilt sensor;
When the bodice is a protector type, the base is attached to the bodice so that one end of the base acts as a rotating shaft, and when not in use, the base is folded upward at the one end to be close to the bodice. However, when used, it can be held open at any angle of 60 to 100 degrees from the bodice. When the bodice is a vest type, one end of the base is a rotation axis. attached to a support frame removably attached to the bodice so as to operate as a support frame, folded upward at one end and held close to the support frame when not in use, but in use the support frame. Can be held open at any angle between 60 and 100 degrees from the frame;
The infrared investigation analysis diagnosis device according to claim 1. The head wearing device is characterized by being a helmet type;
The infrared investigation analysis diagnosis device according to claim 1 or claim 2. The infrared camera is characterized in that it can be used by selecting a long-distance compatible type, a medium-range compatible type, or a short-range compatible type;
The infrared investigation analysis diagnosis device according to any one of claims 1 to 3. The infrared camera is further characterized by being interchangeable with a drone-mounted cordless type;
The infrared investigation analysis diagnosis device according to claim 4.

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