JP6960764B2 - Building health assessment system - Google Patents

Description

The present invention relates to a building soundness evaluation system utilizing image processing technology.

Conventionally, a technique for monitoring the structure of a building or the like is known (see, for example, Patent Documents 1 to 5). For example, the technique described in Patent Document 1 estimates the building response from the information of the acceleration sensor installed in the building, evaluates the soundness of the building frame at the time of an earthquake, evaluates the degree of damage to the ceiling / finishing material, and the like. It is a thing. More specifically, in Patent Document 1, the displacement time history is obtained by numerically integrating the acceleration time history measured by the acceleration sensor, and the inter-story displacement time history is calculated by obtaining the difference between each floor to obtain the building soundness. To evaluate. In addition, the degree of damage to the ceiling / finishing material is evaluated from the criteria that relate the maximum acceleration to the degree of damage.

In connection with such a monitoring technique, the applicant for this patent has already proposed a structure displacement monitoring system as shown in Patent Document 6. This is to measure the displacement of a structure by utilizing image processing technology.

Japanese Unexamined Patent Publication No. 2013-195354 Japanese Unexamined Patent Publication No. 11-006878 JP-A-2007-272558 JP-A-2009-258036 Japanese Unexamined Patent Publication No. 2006-072411 Japanese Patent Application No. 2015-221513 (Unpublished at this time)

Hitoshi Sasaki, Keiichi Okada, Yuji Morii, Yukinobu Kurose, Yasushi Watanabe: Development of a system for determining the soundness of buildings during an earthquake, Architectural Institute of Japan Conference Academic Lecture Abstracts (Kyushu), Structure II, pp.1023-1024, 2016.8.

However, in the method using the acceleration sensor of Patent Document 1 described above, since the displacement amount is indirectly obtained by the numerical integration of the acceleration record, there is a possibility that it will be underestimated due to the influence of the integration error when residual displacement occurs. there were.

Therefore, there has been a demand for a technique capable of directly measuring the amount of deformation, which is important for evaluating the soundness of a building.

The present invention has been made in view of the above, and an object of the present invention is to provide a building soundness evaluation system capable of directly measuring the amount of deformation, which is important for evaluating the soundness of a building.

In order to solve the above-mentioned problems and achieve the object, the building soundness evaluation system according to the present invention photographs an area containing one or more signs of a known shape fixed to a member constituting the building. Then, by the imaging means for acquiring the captured image, the image analysis means for obtaining the position and shape of the marker contained in the image by performing image analysis processing on the image acquired by the imaging means, and the image analysis means. It is provided with a deformation amount measuring means for measuring the deformation amount of the member based on the obtained position and shape of the sign, and a soundness evaluation means for evaluating the soundness of the building based on the measured deformation amount of the member. It is characterized by.

Further, in the above-described invention, another building soundness evaluation system according to the present invention has been acquired by an indoor image pickup means for photographing a predetermined area inside the building and acquiring the photographed image, and an indoor image pickup means. A room that evaluates the degree of scattering in a room based on an indoor image analysis means that performs difference analysis of images before and after an earthquake, a difference analysis result by the indoor image analysis means, and the amount of deformation of the member measured by the deformation amount measuring means. It is characterized by further including a scattering degree evaluation means.

Further, another building soundness evaluation system according to the present invention is characterized in that, in the above-mentioned invention, the sign utilizes a known shape included in the appearance design of the member.

Further, in the soundness evaluation system of another building according to the present invention, in the above-described invention, the label has a two-dimensional shape, and the deformation amount measuring means displaces the label based on the position and shape of the label. It is characterized in that the amount and the rotation angle are obtained, and the deformation amount of the member is measured based on the obtained displacement amount and the rotation angle.

Further, in the soundness evaluation system of another building according to the present invention, in the above-described invention, the imaging means is network-connected to the server in which the image analysis means and the deformation amount measuring means are stored, and the deformation is described. The measurement result by the quantity measuring means is configured to be output from the output means connected to the server.

Further, in the above-described invention, the soundness evaluation system of another building according to the present invention comprises the image analysis means, the deformation amount measuring means, and the deformation amount measuring means in a housing for accommodating the imaging means. It is characterized in that a storage means for storing the measurement result and a power supply means for supplying power to each of the means are housed.

Further, in the soundness evaluation system of another building according to the present invention, in the above-described invention, the output means for outputting the measurement result by the deformation amount measuring means is further housed in the housing for accommodating the imaging means. It is characterized by being.

According to the building soundness evaluation system according to the present invention, an image pickup means for acquiring an image obtained by photographing an area including one or a plurality of signs of a known shape fixed to a member constituting the building. , The image analysis means for obtaining the position and shape of the label contained in the image by performing image analysis processing on the image acquired by the image pickup means, and the above based on the position and shape of the label obtained by the image analysis means. Since it is provided with a deformation amount measuring means for measuring the deformation amount of a member and a soundness evaluation means for evaluating the soundness of the building based on the measured deformation amount of the member, it is important for evaluating the soundness of the building. It has the effect of being able to directly measure the amount of deformation.

Further, according to another building soundness evaluation system according to the present invention, an indoor image pickup means for photographing a predetermined area inside the building and acquiring the photographed image, and an indoor image pickup means before and after the earthquake acquired by the indoor image pickup means. Indoor scattering degree evaluation that evaluates the scattering degree in the room based on the difference analysis result by the indoor image analysis means for differentially analyzing the image, the difference analysis result by the indoor image analysis means, and the deformation amount of the member measured by the deformation amount measuring means. Since the means are further provided, it is possible to grasp the scattering situation in the room such as the fall of furniture and furniture.

Further, according to the soundness evaluation system of another building according to the present invention, the sign uses a known shape included in the appearance design of the member, so that the measuring instrument can be attached to the structure. It has the effect of being able to provide a simple and inexpensive building soundness evaluation system that does not require large-scale work.

Further, according to the soundness evaluation system of another building according to the present invention, the sign has a two-dimensional shape, and the deformation amount measuring means rotates the displacement amount and rotation of the sign based on the position and shape of the sign. Since the angle is obtained and the amount of deformation of the member is measured based on the obtained amount of displacement and the rotation angle, the amount of deformation of the member can be measured easily and quickly.

Further, according to the soundness evaluation system of another building according to the present invention, the imaging means is network-connected to the server in which the image analysis means and the deformation amount measuring means are stored, and the deformation amount measuring means. Since the measurement result by is configured to be output from the output means connected to the server, it is possible to save the trouble of human beings to measure and aggregate the data, and it is possible to quickly grasp the amount of deformation. , It has the effect of making it possible to judge the safety of the structure in real time.

Further, according to the soundness evaluation system of another building according to the present invention, the measurement results by the image analysis means, the deformation amount measuring means, and the deformation amount measuring means are mounted on the housing for accommodating the imaging means. Since the storage means for storing and the power supply means for supplying power to each of the above means are housed, the power supply for the system is lost due to an earthquake or the like, or the function of the communication network for transmitting and receiving data between the systems is lost. Even so, the effect is that the amount of deformation can be measured using the power supply means as the power source and the result can be recorded in the storage means.

Further, according to the soundness evaluation system of another building according to the present invention, the housing for accommodating the imaging means further accommodates the output means for outputting the measurement result by the deformation amount measuring means. , The effect is that the amount of deformation can be grasped from the output means provided in the imaging means.

FIG. 1 is a conceptual diagram showing the first embodiment of the building soundness evaluation system according to the present invention. FIG. 2 is a diagram showing an outline of the shaking table experiment. FIG. 3 is a diagram showing a time history displacement waveform at the time of the shaking table experiment. FIG. 4 is a comparison diagram of the maximum value of the maximum displacement and the maximum value of the residual displacement, in which FIG. 4A is the maximum displacement and FIG. 4B is the residual displacement. FIG. 5 is a diagram showing the correction effect of the maximum displacement and the criteria for soundness determination. FIG. 6 is a conceptual diagram showing the second embodiment of the building soundness evaluation system according to the present invention.

The present invention is a system capable of directly measuring the inter-story displacement, which is important for evaluating the soundness of a building.
Hereinafter, embodiments of the building soundness evaluation system according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

(Embodiment 1)
First, the building soundness evaluation system of the first embodiment according to the present invention will be described. In the first embodiment, the relative displacement between the camera attached to each floor of the building and the sign of the known shape is directly measured by using the image processing technology, and the soundness of the building at the time of an earthquake is based on the measurement result. It is for sexual evaluation. In the following description, a case where the structure displacement monitoring system described in Patent Document 6 is applied as a displacement measurement system that directly measures displacement by using image processing technology will be described as an example.

As shown in FIG. 1 (1), the building soundness evaluation system 10 according to the first embodiment is applied to a layered building 12 such as a building. In the following, the case where the layered building 12 is a four-story building consisting of the first floor to the fourth floor will be described as an example, but a building having a number of floors other than this may be used. The soundness evaluation system 10 includes a plurality of cameras 14A to 14D as imaging means.

The cameras 14A to 14D are fixed to the intersections of the ceilings 1A to 4A and the side walls 1C to 4C on the floors 1F to 4F, respectively. The fixed place of the cameras 14A to 14D is not limited to this, and may be any place as long as the sign provided on the component member of the building 12 can be photographed, for example, on the floor 1B to 4B or the side wall 1C to 4C in the room. It may be set or it may be set outside the building 12.

On the other hand, signs 16A to 16D composed of one or a plurality of known shapes are fixed to the floors 1B to 4B (constituent members) diagonally downward from the cameras 14A to 14D. The fixed position of the signs 16A to 16D is not limited to the floor, and may be the ceiling or side wall of the room as long as the position fits within the shooting angle of view of the cameras 14A to 14D. When the camera is installed outside the building 12, the sign may be fixed to the outer wall of the building 12.

The markers 16A to 16D can be formed of a two-dimensional shape that can be drawn on a two-dimensional plane, and may be formed of, for example, a figure or a pattern having a shape feature such as a marker or a star.

Each camera 14A to 14D captures an area including the markers 16A to 16D fixed to the floors 1B to 4B at a predetermined sampling cycle to acquire an image. The orientation of each camera 14A to 14D is fixed. Therefore, the angle of view of the camera, that is, the shooting range is fixed, and images in the same area are always acquired. The camera can be configured by using an inexpensive camera having several tens to one million pixels. Further, as this camera, a surveillance camera or the like that is familiar to us may be diverted. By doing so, it is possible to reduce the introduction cost.

The cameras 14A to 14D are connected to the server 18 installed on the 1st floor of the layer by a wired network (not shown) or a wireless network and an antenna wired in the layered building 12. The images taken by the cameras 14A to 14D are sent to the server 18 in real time via these networks.

The server 18 includes an image analysis means 20, a deformation amount measuring means 22, a soundness evaluation means 24, an output means 26, and a storage means 28.

The image analysis means 20 performs image analysis processing on the images acquired by the cameras 14A to 14D to obtain the three-dimensional positions and shapes of the markers 16A to 16D having known shapes included in the image. The image analysis means 20 can be configured by using commercially available image analysis software capable of such image processing. Further, as an image analysis method for obtaining the positions and shapes of the markers 16A to 16D of known shapes in an image, for example, an image is collated with a known shape registered in advance in a database such as a storage means 28 and a deformed shape thereof. It is possible to use a well-known method such as extracting a combination of dots having a high degree of correlation.

The deformation amount measuring means 22 measures the deformation amount of the floors 1B to 4B, which are the measurement target points, based on the positions and shapes of the signs 16A to 16D obtained by the image analysis means 20.

Next, the concept of image processing by the image analysis means 20 and the deformation amount measuring means 22 will be described. For convenience, each of the markers 16A to 16D shall be represented by a two-dimensional star-shaped marker 16 drawn on a two-dimensional plane. The position of the sign 16 before the deformation of the layered building 12 in the acquired image and the position of the sign 16 in the image acquired after the deformation change. At this time, the position of the center of gravity of the star shape is displaced in a predetermined direction, and the star shape rotates around the position of the center of gravity in a predetermined direction.

Therefore, the image analysis means 20 first obtains the positions and shapes of the markers 16 before and after the deformation. Next, the deformation amount measuring means 22 obtains the deformation amount (displacement amount and rotation angle) of the label 16 from the obtained position and shape of the sign 16. Here, the amount of deformation of the sign 16 has a strong correlation with the amount of deformation of the constituent members (ceiling, side wall, floor, etc.) at the place where the sign 16 is fixed, and is considered to represent the amount of deformation of the constituent members. Therefore, for example, assuming that the obtained deformation amount of the label 16 and the deformation amount of the constituent member to which the label 16 is fixed are equivalent, the deformation amount of the constituent member is measured. By doing so, it is possible to directly measure the amount of deformation that is important in evaluating the soundness of the building 12.

The soundness evaluation means 24 evaluates the soundness of the building 12 based on the deformation amount measured by the deformation amount measuring means 22 and a predetermined soundness determination standard. As an example of the criteria that make up this soundness criterion, for example, the maximum interlayer deformation angle of less than 1/200 is "safe / continuous use", 1/200 or more is "caution / (continuous use)", 1/100 rad. The above is "danger / temporary evacuation", and 1/75 rad or more is "danger / evacuation" (see, for example, Non-Patent Document 1 above). When evaluating the soundness using such a soundness determination standard, the soundness evaluation means 24 obtains the maximum interlayer deformation amount from the deformation amount measured by the deformation amount measuring means 22, and obtains the maximum interlayer deformation amount. And evaluate by judging the soundness based on the soundness judgment criteria.

The output means 26 is for outputting information such as the amount of deformation of the constituent member measured by the deformation amount measuring means 22 and the evaluation result by the soundness evaluation means 24. For example, a printer or a display that prints out such information. It can be configured by an output monitor or the like.

The storage means 28 includes image data of the markers 16A to 16D by the cameras 14A to 14D, known shape data of the markers 16A to 16D, image analysis result data, measurement result data, data related to criteria for soundness determination, evaluation result data, and the like. Is stored, and can be configured by, for example, a hard disk or a memory.

The operation and operation of the above configuration will be described.
As shown in FIG. 1 (1), the cameras 14A to 14D photograph the signs 16A to 16D at predetermined sampling intervals, and the image data is transmitted to the server 18 via a wired or wireless network. The image data is image-analyzed by the image analysis means 20, and the positions and shapes of the markers 16A to 16D in the image are obtained. The deformation amount measuring means 22 measures the deformation amount of the constituent members (floors 1B to 4B in the example of the figure) based on the obtained positions and shapes of the signs 16A to 16D. The measured amount of deformation is output by the output means 26 as an interlayer displacement time history as shown in FIG. 1 (2), and is provided to the user. As a result, it is possible to easily and quickly measure the change in the overall shape of the layered building 12 damaged by the earthquake.

Further, the soundness evaluation means 24 determines and evaluates the soundness of the building 12 based on the deformation amount measured by the deformation amount measuring means 22 and a predetermined soundness determination standard. This result is output by the output means 26 as a determination result as shown in FIG. 1 (3), and is provided to the user. In the example of the figure, the case where the layers 1F and 4F are determined to be "safe", the layer 3F is determined to be "caution", and the layer 2F is determined to be "dangerous" is shown. In this way, the soundness of the layered building 12 at the time of an earthquake can be evaluated.

According to this embodiment, it is possible to directly measure the inter-story displacement, which is important for evaluating the soundness of a building.

In the conventional method of Patent Document 1 and the like, the measured acceleration time history is numerically integrated to obtain the displacement time history, and the difference between the floors is obtained to obtain the inter-story displacement time for evaluating the building soundness. The history was calculated. Therefore, it was necessary to synchronize the time history acceleration records of each floor. In addition, since the acceleration record is numerically integrated, it may be underestimated due to the influence of integration error, such as when residual displacement occurs.

On the other hand, in the present embodiment, the relative displacement between the camera 14A or the like and the marker 16A or the like having a known shape can be directly measured based on the image processing technique. It is not necessary to use a time-synchronized measurement system, and it is possible to measure residual displacement that could not be evaluated by acceleration recording, and it is possible to evaluate building soundness including the residual displacement of the building 12.

In addition, it is possible to construct an inexpensive system consisting only of a camera, a sign, an existing network or a server, without requiring an expensive system or a large-scale work such as attaching a measuring instrument to a structure such as a beam or a brace. Furthermore, by connecting the camera directly to the network, humans can save the trouble of measuring and data aggregation, and the total amount of deformation can be calculated quickly, so the soundness of the building can be judged in real time. be.

In addition, it is possible to construct a system using an existing surveillance camera system, and since it is not necessary to construct the system only for the soundness evaluation of the building, the system introduction cost can be significantly reduced.

Further, according to the present embodiment, the amount of deformation of each measurement target portion can be measured only with an inexpensive camera and a sign. In addition, the shape, size, arrangement position, and number of signs can be freely selected within a range in which the signs in the acquired image can be recognized according to the required accuracy of the amount of deformation.

For example, as the above-mentioned signs 16A to 16D, those newly drawn on the constituent members (ceiling, floor, side wall, etc.) may be used, or known shapes and patterns already included in the appearance design of the constituent members are used. It may be a thing. Further, the labels 16A to 16D may use different shapes instead of the same known shape. As described above, the sign used in the present invention has a high degree of freedom in design and can be incorporated as a part of the design in the environment, so that a large-scale work such as attaching a measuring instrument to the structure is required. It is possible to provide a simple and inexpensive system that does not.

In the above embodiment, the case where the number of pairs of the camera (imaging means) and the sign is four has been described, but the present invention is not limited to this, and the number of pairs may be other than this. Even in this way, the same effect as described above can be obtained.

Further, in the above embodiment, the housing for accommodating each camera 14A and the like includes an image analysis means 20, a deformation amount measuring means 22, a soundness evaluation means 24, an output means 26, a storage means 28, and a battery (power supply). The unit configuration may be such that the means) is accommodated. In this way, even if the power supply for the system is lost due to an earthquake or the like, or the functions of the wired network and the wireless network for transmitting and receiving data between the servers 18 are lost, each camera 14A or the like is equipped with a battery. Therefore, it is possible to continuously shoot using each battery as a power source. Further, the deformation amount is continuously measured by using the image analysis means 20 and the deformation amount measuring means 22 provided in each camera 14A or the like, the result is recorded in its own storage means 28, and further output by its own output means 26. can do. Therefore, even if the power supply for the system or the network function is lost due to an earthquake or the like, it is possible to reliably measure the change in the overall shape of the layered building 12 damaged by the earthquake.

<Verification of the effect of the present invention>
In order to verify the effect of the present invention, a shaking table experiment using a camera and a marker having a known shape was carried out, and the measurement accuracy of the displacement measurement system using the above image processing technique was investigated. The outline of the shaking table experiment is shown in FIG. As shown in this figure, considering the floor height of a general building, the distance between the viewpoints of the camera and the sign of the known shape provided on the wall is set to 3 m (= 3000 mm), and the camera is placed on the shaking table. It was vibrated. The height of the camera and the sign were set to be about the same, and the shooting direction of the camera was set to the horizontal direction.

FIG. 3 shows the experimental results in which the frame rate of the camera was set to 5 fps and the camera was vibrated by a sine wave having a period of 1 second. FIG. 3 compares the time waveform (image displacement) measured by the displacement measurement system using the above image processing technology with the time waveform (displacement meter) measured by the laser displacement meter with high measurement accuracy. .. As shown in this figure, the maximum amplitude value (image displacement) of the displacement by the displacement measurement system using the image processing technology is about 70% of the result by the laser displacement meter, but when the frame rate is 5 fps. However, it is possible to capture the shape of the sine wave, and it can be seen that the displacement waveform can be measured by the displacement measurement system using image processing technology. It is possible to improve the measurement accuracy by increasing the frame rate and correcting the distortion of the camera lens. Further, it can be seen that the residual displacement of about 2 mm remains, but the residual displacement that cannot be measured by the acceleration sensor can be measured.

Next, FIG. 4 shows the results when the period of the sine wave is changed for the excitation wave and when the seismic waveform is used. FIG. 4A shows the maximum displacement and FIG. 4B shows the residual displacement. The results of the displacement measurement system using image processing technology (image measurement AR) and the results of the laser displacement meter (displacement meter) are compared. ing. As shown in these figures, the displacement measurement system using the image processing technology can measure the displacement at about 3 mm or more for both the maximum displacement and the residual displacement even when the characteristics of the excitation wave are changed. The amplitude values of the maximum displacement and residual displacement of displacement measurement systems using image processing technology tend to be underestimated by about 70%, but this tendency is stable regardless of the magnitude of the amplitude and the characteristics of the excitation wave. There is. Therefore, it is possible to secure the accuracy by correcting the displacement value by the displacement measurement system using the image processing technology.

In this experiment, since the distance between the viewpoints of the camera and the sign of the known shape is 3000 mm, it is possible to measure the building deformation of 1/1000 rad or more when converted into the interlayer deformation angle of the building. Therefore, the displacement measurement system using the above image processing technique can be utilized for determining the soundness of the building at the time of an earthquake.

FIG. 5 shows an example of the above vibration experiment results and the criteria for determining the soundness of the building. As described above, since the maximum value tends to be underestimated by about 70%, the result obtained by the displacement measurement system using the image processing technology (image displacement) and the result of correcting this (image displacement) + Correction) is also shown. It can be seen that the measurement accuracy is improved by the correction. In addition, it can be seen that the determination can be made with high accuracy at an interlayer deformation angle of 1/200 rad or more, which is important for determining the soundness of a building.

From the above, according to the present invention, by applying the displacement measurement system using the image processing technology, the same thing as the soundness judgment of the building at the time of the earthquake, which has been performed by using the acceleration sensor, can be obtained. It can be implemented by a displacement measurement system that uses processing technology.

(Embodiment 2)
Next, the building soundness evaluation system of the second embodiment according to the present invention will be described. In the second embodiment, the image processing technique described in the first embodiment is utilized, and the furniture / fixtures are based on the relative displacement information based on the sign of the known shape and the difference information of the indoor space before and after the earthquake. This is to evaluate the degree of scattering in the room such as the fall of the furniture. In the following, a case where the application is applied to the three-story multi-story building 12 will be described as an example.

As shown in FIG. 6 (1), the building soundness evaluation system 100 according to the second embodiment has cameras 14A to 14C fixed to each floor of the building 12 and signs 16A fixed to floors 1B to 3B. ~ 16C and a server 18 installed on the 1st floor are provided. The server 18 stores an image analysis means 20, a deformation amount measuring means 22, an indoor scattering degree evaluation means 30, an output means 26, and a storage means 28. The soundness evaluation means 24 may be stored in the server 18 as in the first embodiment. Since each of these components is the same as that described in the first embodiment except for the indoor scattering degree evaluation means 30, detailed description thereof will be omitted.

Furniture and the like 1E to 3E (furniture and furniture) are arranged on the side walls 1D to 3D on the 1st floor to 3rd floor. The cameras 14A to 14C include a sign photographing unit for photographing the markers 16A to 16C and a furniture photographing unit (indoor imaging means) for photographing the area where the furniture and the like 1E to 3E are placed.

The image analysis means 20 includes a marker image analysis unit and an indoor image analysis unit (indoor image analysis means). The labeled image analysis unit has the functions and functions of the image analysis means 20 described in the first embodiment. On the other hand, the indoor image analysis unit performs differential analysis of the images of furniture and the like 1E to 3E before and after the earthquake acquired by the furniture photographing units of the cameras 14A to 14C.

The indoor scattering degree evaluation means 30 evaluates the scattering degree in a room based on the difference analysis result by the indoor image analysis unit of the image analysis means 20 and the deformation amount measured by the deformation amount measuring means 22.

The operation and operation of the above configuration will be described.
As shown in FIG. 6 (1), the marker photographing units of the cameras 14A to 14C photograph the markers 16A to 16C at predetermined sampling intervals, and transmit the image data to the server 18 via a wired or wireless network. The image data is image-analyzed by the labeled image analysis unit of the image analysis means 20, and the positions and shapes of the labels 16A to 16C in the image are obtained. The deformation amount measuring means 22 measures the deformation amount of the constituent members (floors 1B to 3B in the example of the figure) based on the obtained positions and shapes of the signs 16A to 16C. The measured amount of deformation is output by the output means 26 as an interlayer displacement time history as shown in FIG. 6 (2), and is provided to the user. As a result, it is possible to easily and quickly measure the change in the overall shape of the layered building 12 damaged by the earthquake.

On the other hand, the furniture photographing unit of the cameras 14A to 14C photographs the area including furniture and the like 1E to 3E before and after the earthquake, and transmits the image data to the server 18 via a wired or wireless network. The image data of furniture and the like 1E to 3E before and after the earthquake are differentially analyzed by the indoor image analysis unit of the image analysis means 20. This differential analysis can be performed using well-known image processing techniques. As a result of this differential analysis, for example, a changed portion of the camera image after the earthquake is extracted with reference to the camera image before the earthquake as shown in FIG. 6 (2). In the example of the figure, after the earthquake, "furniture tipping over" is extracted on the 3rd floor, "book scattering" is extracted on the 2nd floor, and "no scattering" is extracted on the 1st floor.

The indoor scattering degree evaluation means 30 evaluates the scattering degree in the room based on the result of the above difference analysis and the deformation amount measured by the deformation amount measuring means 22. This result is output by the output means 26 as a determination result as shown in FIG. 6 (3), and is provided to the user. As a result, the user can easily grasp the scattering situation in the room such as a fall of furniture or the like 1E to 3E. In the example of the figure, the case where the layer 1F is determined to be "safe", the layer 2F is determined to be "caution", and the layer 3F is determined to be "dangerous" is shown. In this way, the degree of scattering in the room at the time of an earthquake can be evaluated.

Therefore, according to the present embodiment, the amount of deformation on each floor can be directly measured as in the above-described first embodiment, and the degree of scattering in the room is determined from the result of the differential analysis of the indoor images before and after the earthquake. Can be easily grasped.

As described above, according to the building soundness evaluation system according to the present invention, an image taken by photographing an area including one or a plurality of signs of a known shape fixed to a member constituting the building. The image pickup means for acquiring the image, the image analysis means for obtaining the position and shape of the marker contained in the image by performing image analysis processing on the image acquired by the image pickup means, and the position of the label obtained by the image analysis means. And since it is provided with a deformation amount measuring means for measuring the deformation amount of the member based on the shape and a soundness evaluation means for evaluating the soundness of the building based on the measured deformation amount of the member, the soundness evaluation of the building is provided. It is possible to directly measure the amount of deformation, which is important for performing the above.

Further, according to another building soundness evaluation system according to the present invention, an indoor image pickup means for photographing a predetermined area inside the building and acquiring the photographed image, and an indoor image pickup means before and after the earthquake acquired by the indoor image pickup means. Indoor scattering degree evaluation that evaluates the scattering degree in the room based on the difference analysis result by the indoor image analysis means for differentially analyzing the image, the difference analysis result by the indoor image analysis means, and the deformation amount of the member measured by the deformation amount measuring means. Since the means are further provided, it is possible to grasp the scattering situation in the room such as the fall of furniture and furniture.

Further, according to the soundness evaluation system of another building according to the present invention, the sign uses a known shape included in the appearance design of the member, so that the measuring instrument can be attached to the structure. It is possible to provide a simple and inexpensive building soundness evaluation system that does not require a large-scale work.

Further, according to the soundness evaluation system of another building according to the present invention, the sign has a two-dimensional shape, and the deformation amount measuring means rotates the displacement amount and rotation of the sign based on the position and shape of the sign. Since the angle is obtained and the deformation amount of the member is measured based on the obtained displacement amount and rotation angle, the deformation amount of the member can be measured easily and quickly.

Further, according to the soundness evaluation system of another building according to the present invention, the imaging means is network-connected to the server in which the image analysis means and the deformation amount measuring means are stored, and the deformation amount measuring means. Since the measurement result by is configured to be output from the output means connected to the server, it is possible to save the trouble of human beings to measure and aggregate the data, and it is possible to quickly grasp the amount of deformation. , It becomes possible to judge the safety of the structure in real time.

Further, according to the soundness evaluation system of another building according to the present invention, the measurement results by the image analysis means, the deformation amount measuring means, and the deformation amount measuring means are mounted on the housing for accommodating the imaging means. Since the storage means for storing and the power supply means for supplying power to each of the above means are housed, the power supply for the system is lost due to an earthquake or the like, or the function of the communication network for transmitting and receiving data between the systems is lost. However, the amount of deformation can be measured using the power supply means as a power source, and the result can be recorded in the storage means.

Further, according to the soundness evaluation system of another building according to the present invention, the housing for accommodating the imaging means further accommodates the output means for outputting the measurement result by the deformation amount measuring means. , The amount of deformation can be grasped from the output means provided in the imaging means.

As described above, the building soundness evaluation system according to the present invention is useful for evaluating the soundness of a building at the time of an earthquake or the like, and in particular, the inter-story displacement which is important for evaluating the soundness of a building. Suitable for direct measurement.

1A-4A Ceiling (member)
1B-4B floor (members)
1C-4C side wall (member)
1D to 3D Side wall 1E to 3E Furniture, etc. 1F to 4F Floor 10,100 Building soundness evaluation system 12 Layered building (building)
14A-14D camera (imaging means)
16A to 16D Label 18 Server 20 Image analysis means 22 Deformation amount measuring means 24 Soundness evaluation means 26 Output means 28 Storage means 30 Indoor scattering degree evaluation means

Claims (6)

An imaging means for capturing an area containing one or a plurality of signs of a known shape fixed to a member constituting a building and acquiring the captured image, and an image analysis process for the image acquired by the imaging means. An image analysis means for obtaining the position and shape of the marker included in the image, a deformation amount measuring means for measuring the deformation amount of the member based on the position and shape of the marker obtained by the image analysis means, and measurement. By the soundness evaluation means for evaluating the soundness of the building based on the amount of deformation of the member, the indoor imaging means for photographing a predetermined area in the room of the building and acquiring the photographed image, and the indoor imaging means. The degree of scattering in the room is determined based on the indoor image analysis means for differentially analyzing the acquired images before and after the earthquake, the difference analysis result by the indoor image analysis means, and the deformation amount of the member measured by the deformation amount measuring means. A building soundness evaluation system characterized by providing an indoor scattering degree evaluation means for evaluation. The building soundness evaluation system according to claim 1 , wherein the sign utilizes a known shape included in the appearance design of the member. The label has a two-dimensional shape, and the deformation amount measuring means obtains the displacement amount and rotation angle of the label based on the position and shape of the label, and deforms the member based on the obtained displacement amount and rotation angle. The building integrity assessment system according to claim 1 or 2, wherein the quantity is measured. The imaging means is network-connected to the image analysis means and the server in which the deformation amount measuring means is stored, and the measurement result by the deformation amount measuring means is output from the output means connected to the server. The building soundness evaluation system according to any one of claims 1 to 3, wherein the building is configured in. The housing for accommodating the imaging means houses the image analysis means, the deformation amount measuring means, a storage means for storing the measurement result by the deformation amount measuring means, and a power supply means for supplying power to each of the means. The building soundness evaluation system according to any one of claims 1 to 3, wherein the building soundness evaluation system is characterized. The building soundness evaluation system according to claim 5 , wherein an output means for outputting a measurement result by the deformation amount measuring means is further housed in a housing for accommodating the imaging means.

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