WO2022220064A1 - Test device, test method, test program, and test system - Google Patents

Abstract

Provided is a test device, a test method, a test program, and a test system with which it is possible to quantitatively test the sterilizing effect of UV light. This invention includes: a step for setting, in a space irradiated with UV light from a UV light source at a fixed position, a sheet that changes color according to the UV light irradiation amount; a step for capturing an image of a sheet left exposed in the space for a prescribed amount of time together with a chart indicating the relationship between color and UV light irradiation amounts; a step for analyzing the captured image and establishing the UV light irradiation amount at the position at which the sheet is set; and a step for assessing the sterilizing effect at the position at which the sheet is set, on the basis of the established UV light irradiation amount.

Description

Inspection device, inspection method, inspection program and inspection system

The present invention relates to an inspection device, an inspection method, an inspection program and an inspection system, and more particularly to an inspection device, an inspection method, an inspection program and an inspection system for inspecting the disinfection effect of ultraviolet rays.

Ultraviolet rays are known to have a high disinfection effect (including concepts such as viricidal, virus inactivating, sterilizing, sterilizing, sterilizing, and disinfecting).

Patent Document 1 describes a method for visually confirming the disinfection effect of ultraviolet rays using a sheet whose color changes according to the amount of ultraviolet irradiation.

In addition, Patent Documents 2 and 3 describe an ultraviolet amount measuring device that includes a sheet whose color changes according to the amount of ultraviolet irradiation and a reference section for determining the color of the sheet.

In addition, US Pat. No. 5,300,000 discloses applying a patch to the skin with multiple sessions each displaying a different color in response to exposure to ultraviolet radiation, taking an image of the patch, and analyzing the taken image. , describes a system for measuring ultraviolet radiation in individuals.

Japanese Patent Publication No. 2017-524393 JP-A-2003-42844 JP-A-2006-71580 Japanese Patent Publication No. 2019-508679

However, all of the conventional methods have the drawback of not being able to quantitatively test the disinfection effect of ultraviolet rays.

The present invention has been made in view of such circumstances, and aims to provide an inspection device, an inspection method, an inspection program, and an inspection system that can quantitatively inspect the disinfection effect of ultraviolet rays.

(1) A processor is provided, and the processor is a sheet whose color changes according to the amount of ultraviolet irradiation. Acquisition of the photographed image along with a chart showing the relationship between color and color, analysis of the acquired image, processing of determining the amount of ultraviolet radiation at the location where the sheet is installed, and installation of the sheet based on the determined amount of ultraviolet radiation. An inspection device that performs a process of determining a disinfection effect at a location.

(2) The processor further performs a process of acquiring information on the relative positional relationship between the ultraviolet light source and the sheet, and determines the disinfection effect based on the acquired information on the positional relationship and the obtained amount of ultraviolet irradiation. , (1) inspection device.

(3) The processor further performs a process of acquiring a three-dimensional model of the space and a process of acquiring information on the position of the ultraviolet light source and the position of the sheet on the three-dimensional model, The inspection apparatus according to (2), wherein the relative positional relationship between the ultraviolet light source and the sheet is calculated based on information on the position of the light source and the position of the sheet, and information on the positional relationship is obtained.

(4) The processor further performs processing for displaying the three-dimensional model on the display, receives designation of the position of the ultraviolet light source and the position of the sheet on the three-dimensional model displayed on the display, and emits ultraviolet rays on the three-dimensional model. The inspection device according to (3), which acquires information on the position of the light source and the position of the sheet.

(5) The processor performs a process of estimating the irradiation distribution of ultraviolet rays in the space based on the information of the ultraviolet irradiation amount at the plurality of points in the space, which is obtained by installing sheets at a plurality of points in the space. The inspection apparatus according to (3) or (4), which further performs a process of generating a map showing the irradiation distribution obtained and a process of superimposing the generated map on the three-dimensional model and displaying it on a display.

(6) Information on the positional relationship includes information on the distance between the ultraviolet light source and the sheet, and information on the angle formed by the installation direction of the sheet with respect to the ultraviolet light source and the irradiation direction of the ultraviolet rays, from (2) to (5). ) inspection equipment.

(7) The inspection device according to any one of (1) to (6), wherein the processor compares the obtained ultraviolet irradiation amount with a threshold to determine the disinfection effect.

(8) A sheet whose color changes according to the amount of ultraviolet irradiation, a chart showing the relationship between the amount of ultraviolet irradiation and color, an imaging device, a display, and the inspection device according to any one of (1) to (7). and an inspection system comprising:

(9) The inspection system of (8), wherein the holding member that holds the sheet is integrally provided with the chart.

(10) The inspection system of (8) or (9), wherein the sheet has a band-pass filter and changes color according to the amount of ultraviolet radiation in a specific wavelength range.

(11) A step of placing a sheet whose color changes according to the amount of ultraviolet irradiation in a space irradiated with ultraviolet rays from a UV light source at a fixed position; Analyzing the photographed image to determine the amount of ultraviolet irradiation at the location where the sheet is installed, and determining the disinfection effect at the location where the sheet is installed based on the determined amount of ultraviolet radiation. A method of inspection, comprising:

(12) Shows the relationship between the amount of ultraviolet irradiation and the color of a sheet that changes color depending on the amount of ultraviolet irradiation and is exposed for a specified time in a space where ultraviolet rays are irradiated from a fixed ultraviolet light source. A function to acquire an image taken together with the chart, a function to analyze the acquired image and determine the amount of UV irradiation at the place where the sheet is installed, and based on the determined UV dose, determine the disinfection effect at the place where the sheet is installed. An inspection program that allows a computer to realize functions and

(13) A processor is provided, and the processor is a sheet whose color changes according to the amount of ultraviolet irradiation, and is a plurality of sheets exposed for a specified time at a plurality of locations in a space irradiated with ultraviolet rays from a fixed ultraviolet light source. are acquired together with a chart showing the relationship between UV dose and color, each acquired image is analyzed to determine the UV dose at each seat installation location, and space A process of acquiring a three-dimensional model, a process of acquiring information on the position of each sheet on the three-dimensional model, information on the position of each sheet on the three-dimensional model, and ultraviolet irradiation amount at each sheet position. Based on the information, a process of estimating the UV irradiation distribution in the space, a process of generating a map showing the estimated irradiation distribution, and a process of superimposing the generated map on the three-dimensional model and displaying it on the display. Do, inspection equipment.

According to the present invention, the disinfection effect of ultraviolet rays can be quantitatively inspected. In addition, this facilitates the adjustment of the arrangement of the ultraviolet light sources, making it possible to easily achieve the desired disinfection effect.

Diagram showing the schematic configuration of the inspection system Front perspective view showing a schematic configuration of an inspection card Rear perspective view showing a schematic configuration of an inspection card A diagram showing how the color of the measurement sheet changes Block diagram showing an example of the hardware configuration of an inspection device Block diagram of functions possessed by inspection equipment A diagram showing an example of a judgment result screen display Flowchart showing inspection procedures Flowchart showing the procedure of the disinfection effect determination process performed in the inspection device Block diagram of functions possessed by inspection equipment Flowchart showing inspection procedures Flowchart showing the procedure of the disinfection effect determination process performed in the inspection device Conceptual diagram of calculation of the incident angle of ultraviolet rays at the measurement target location Block diagram of functions possessed by inspection equipment A diagram showing an example of the output of a 3D model Flowchart showing inspection procedures Flowchart showing the procedure of the disinfection effect determination process performed in the inspection device A diagram showing an example of a judgment result display A diagram showing an example of the display of judgment results when inspecting multiple locations at once A diagram showing another example of the display of judgment results when inspecting multiple locations at once. Block diagram of functions possessed by inspection equipment A diagram showing an example of a map Flowchart showing inspection procedures Flowchart showing the procedure of map generation processing A diagram showing an example of a display of a map showing an irradiation distribution of ultraviolet rays and a determination result The figure which shows another example of an inspection card

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[First embodiment]
[Inspection system]
FIG. 1 is a diagram showing a schematic configuration of an inspection system according to this embodiment.

The inspection system 1 of the present embodiment is configured as a system for inspecting the disinfection effect in the room where the ultraviolet irradiation device 10 is installed. FIG. 1 shows an example in which an ultraviolet irradiation device 10 is installed on the ceiling surface 2A and the disinfection effect is inspected in a room 2 in which ultraviolet rays are irradiated vertically downward. As shown in FIG. 1, an inspection system 1 according to the present embodiment includes an inspection card 20 and an inspection device 100. As shown in FIG.

[Space to be inspected]
The room 2 in which the ultraviolet irradiation device 10 is installed is an example of a space irradiated with ultraviolet rays from a fixed ultraviolet light source. The ultraviolet irradiation device 10 has an ultraviolet light source (not shown), and irradiates the room with ultraviolet light emitted from the ultraviolet light source with a predetermined light distribution characteristic. The type of ultraviolet light source to be used is not particularly limited. As an example, excimer lamps are used. In addition, a light emitting diode (LED), a mercury lamp, a metal halide lamp, a xenon lamp, a semiconductor laser (LD: Laser Diode), or the like can be used as an ultraviolet light source.

From the viewpoint of disinfection effect, the ultraviolet rays emitted from the ultraviolet light source are preferably ultraviolet rays with a peak wavelength of 280 nm to 200 nm, that is, ultraviolet C waves (UV-C). Ultraviolet rays having a peak wavelength in the vicinity of 222 nm are more preferable. Ultraviolet rays having a peak wavelength in the vicinity of 222 nm are said to be safe, having a high disinfecting effect, and having an extremely small effect on the human body. Therefore, it is preferable to use a light source that emits ultraviolet rays having a peak wavelength in the vicinity of 222 nm as the ultraviolet light source. Incidentally, the ultraviolet light source may be used in combination with an optical filter as appropriate. For example, an optical filter that cuts off a wavelength range dangerous to the human body may be combined to irradiate only ultraviolet rays in a specific wavelength range.

As described above, in the present embodiment, the ultraviolet irradiation device 10 is installed on the ceiling surface 2A of the room 2, and ultraviolet rays are irradiated vertically downward. In this case, the irradiation direction is vertically downward (the direction indicated by arrow V1 in FIG. 1).

[Examination card]
2 and 3 are a front perspective view and a rear perspective view showing a schematic configuration of the inspection card.

The inspection card 20 has an exterior case 22 and a measurement sheet 24 housed in the exterior case 22, and has a rectangular thin plate shape (so-called card shape) as a whole.

The exterior case 22 is composed of two upper and lower plates 22A and 22B. The exterior case 22 accommodates and holds the measurement sheet 24 at a predetermined position inside by sandwiching the measurement sheet 24 between the two plates 22A and 22B. The two plates 22A, 22B are made of a material that is not easily deformed. As an example, it is made of plastic. The exterior case 22 is an example of a holding member.

A circular window 26 is provided on the front of the exterior case 22, as shown in FIG. A part of the measurement sheet 24 housed in the exterior case 22 is exposed through the window 26 . The measurement sheet 24 is exposed through this window portion 26 .

The rear surface of the exterior case 22 is provided with an adhesive sheet 28 with a release paper 28A, as shown in FIG. The release paper 28A protects the adhesive surface of the adhesive sheet 28 and is peeled off from the adhesive sheet 28 as necessary. As a result, the inspection card 20 can be used by sticking it to the inspection target area as needed.

The measurement sheet 24 is a sheet that responds to ultraviolet rays and changes color according to the amount of irradiation. The measurement sheet 24 may change color irreversibly or reversibly. A change in color includes a change in density. Colors to be changed are not particularly limited, but colors with high visual sensitivity such as red, magenta, blue, and cyan are preferred. Since this type of sheet (also referred to as an ultraviolet sensitive sheet) is well known, detailed description thereof will be omitted. For the measurement sheet 24, for example, a UV scale (trade name) manufactured by FUJIFILM Corporation can be used. A UV scale is a sheet that responds to ultraviolet rays and whose color depth changes irreversibly according to the amount of irradiation.

FIG. 4 is a diagram showing how the color of the measurement sheet changes.

The figure shows the change in color over time when the measurement sheet whose color density changes according to the amount of irradiation is irradiated with a certain amount of ultraviolet light from a fixed position. FIG. 1(A) shows the state immediately after irradiation. (B) of the same figure shows the state after a predetermined time has elapsed from the state shown in (A) of the same figure. (C) of the same figure shows the state after a predetermined time has elapsed from the state shown in (B) of the same figure. (D) of the same figure shows the state after a predetermined time has elapsed from the state shown in (C) of the same figure. (E) of the same figure shows the state after a predetermined time has elapsed from the state shown in (D) of the same figure.

The amount of UV irradiation is determined by an integral value of illuminance over time. That is, it is determined by UV irradiation amount (J/m ² )=illuminance (W/m ² )×irradiation time (s). Illuminance is the amount of luminous flux incident on a unit area.

Therefore, when the measurement sheet 24 is irradiated with a certain amount of ultraviolet light from a fixed position, the color density of the measurement sheet 24 changes over time.

A coloring chart 30 is integrally provided on the front of the exterior case 22, as shown in FIG. The coloring chart 30 is a color table showing the relationship between the amount of UV irradiation and the color of the measurement sheet 24 . The coloring chart 30 is configured by arranging a plurality of color samples 28a, 28b, . . . in a line at regular intervals. In the example shown in FIG. 2, five color samples 28a, 28b, 28c, 28d and 28e are displayed. The number of color samples is not particularly limited. Each color sample 28a, 28b, . . . is arranged so that the density changes in one direction. In the example shown in FIG. 2, the darker the color, the higher the amount of UV irradiation. Therefore, the color sample 28e indicates that the UV irradiation amount is the largest. In addition, in the example shown in FIG. 2, the color sample 28a indicates the color when the amount of UV irradiation is zero. That is, it shows the color in the case of non-irradiation.

By integrally providing such a coloring chart 30 in the exterior case 22, it is possible to visually determine the approximate amount of exposure to ultraviolet rays in a simple manner.

[Inspection device]
The inspection device 100 determines the disinfection effect of the position where the inspection card 20 is installed based on the photographed image of the inspection card 20 . In the inspection system 1 of the present embodiment, an inspection apparatus 100 is configured by a tablet computer with a camera.

FIG. 5 is a block diagram showing an example of the hardware configuration of the inspection device (tablet computer).

As shown in the figure, the inspection apparatus 100 includes a CPU (Central Processing Unit) 110, a RAM (Random Access Memory) 112, a ROM (Read Only Memory) 114, an auxiliary storage device 116, a sensor group 118, a camera 120, and a speaker 122. , a microphone 124, a communication interface 126, a display 128, a touch panel 130, and the like.

The CPU 110 is an example of a processor, and the tablet computer functions as the inspection device 100 by the CPU 110 executing a predetermined program (inspection program). RAM 112 functions as a work area for CPU 110 . The ROM 114 and/or the auxiliary storage device 116 store programs executed by the CPU 110 and data necessary for various processes.

The auxiliary storage device 116 is composed of, for example, SSD (Solid State Drive), EEPROM (Electrically Erasable Programmable Read-Only Memory), HDD (Hard Disk Drive), and the like.

The sensor group 118 includes various sensors such as an acceleration sensor, a gyro sensor, a magnetic sensor, a GPS (Global Positioning System), and a range sensor. A range sensor is a two-dimensional scanning optical distance sensor that measures the distance to a detected object while scanning light. Ranging sensors include laser scanners, laser range finders (LRF), LIDAR (Light Detection and Ranging or Laser Imaging Detection and Ranging), and the like. Having a range sensor enables three-dimensional scanning of space.

The camera 120 is a so-called digital camera and has a lens, an image sensor, and the like. The image sensor is composed of, for example, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, a CCD (Charge Coupled Device) image sensor, or the like. Camera 120 is an example of an imaging device.

The communication interface 126 is connected to a network and transmits and receives data to and from other devices. For example, it is connected to a WAN (Wide Area Network) including the Internet, a LAN (Local Area Network), etc., and transmits and receives data to and from other computers (e.g., servers, etc.) and electronic devices (e.g., printers, etc.) .

The display 128 is composed of, for example, an organic electroluminescence display (OELD), a liquid crystal display (LCD), or the like. The display 128 has a touch panel 130 on its display surface.

FIG. 6 is a block diagram of the functions of the inspection device.

As shown in the figure, the inspection apparatus 100 has functions of an image acquisition section 140A, an image analysis section 140B, a determination section 140C, and a determination result output section 140D. These functions are realized by the CPU 110 executing a predetermined program (inspection program).

The image acquisition unit 140A performs processing for acquiring an image of the inspection card 20 (in a narrow sense, an image of the measurement sheet 24 provided in the inspection card 20). In this embodiment, the inspection card 20 is photographed by the camera 120 provided in the inspection apparatus 100 to acquire this image. The photographing is performed on the front surface of the inspection card 20 (the surface having the window portion 26), and is performed so that the entire image is captured. That is, not only the portion of the measurement sheet 24 but also the portion of the coloring chart 30 is photographed. Accordingly, an image including the coloring chart 30 can be acquired. The inspection card 20 to be imaged is an exposed inspection card. That is, it is an inspection card exposed for a specified time by leaving it at a position to be detected for a specified time.

The image analysis unit 140B analyzes the acquired image and performs processing to obtain the ultraviolet exposure amount. Specifically, first, the area of the measurement sheet 24 is identified from the image. Next, the color of the specified area, that is, the color (color development value) of the measurement sheet 24 is specified. Then, the ultraviolet exposure amount corresponding to the specified color is specified.

A known image recognition technique is adopted for the process of specifying the area of the measurement sheet 24 . For example, a technique of detecting the area of the measurement sheet 24 from an image using an image recognition model generated by machine learning, deep learning, or the like can be adopted. The type of machine learning algorithm is not particularly limited. For example, algorithms using neural networks such as RNN (Recurrent Neural Network), CNN (Convolutional Neural Network) and MLP (Multilayer Perceptron) can be used.

Note that if the area of the measurement sheet 24 is known, the process of specifying the area of the measurement sheet 24 is unnecessary. For example, when the inspection card 20 is always placed in a prescribed position within the screen and photographed, the position of the measurement sheet 24 (the position of the window portion 26) within the image is known. No processing is required to identify the area of .

The processing for specifying the color of the measurement sheet 24 includes calibration processing. The photographed image varies depending on individual differences of cameras, photographing conditions, and the like. Therefore, calibration processing is performed so that accurate colors can be specified. This processing is performed using the image of the coloring chart 30 photographed together with the measurement sheet 24 . That is, calibration processing is performed using the coloring chart 30 as a calibration chart.

The process of specifying the ultraviolet exposure amount corresponding to the specified color is performed by referring to a lookup table (LUT) 142, for example. The lookup table 142 is a table in which the color (color development density) of the measurement sheet 24 and the ultraviolet exposure amount are associated one-to-one. Lookup table 142 is stored in auxiliary storage device 116 .

The determination unit 140C performs a process of determining the disinfection effect based on the obtained ultraviolet irradiation amount. The disinfection effect here is the disinfection effect at the installation position of the inspection card 20 . In the present embodiment, it is determined whether or not a sufficient disinfection effect is obtained by comparing the obtained ultraviolet irradiation amount with a determination threshold value. Specifically, the disinfection effect is determined alternatively, with "OK" when a sufficient disinfection effect is obtained and "NG" when a sufficient disinfection effect is not obtained.

Here, the case where a sufficient disinfection effect is obtained means the case where a sufficient amount of ultraviolet irradiation for disinfection is obtained. The amount of UV irradiation sufficient for disinfection varies depending on the target (bacteria, virus, etc. to be disinfected), the UV species (wavelength) to be irradiated, and the like. Therefore, the determination threshold is determined depending on the object, the type of ultraviolet rays, and the like. A determination threshold is an example of a threshold.

Information on the determination threshold is stored in the auxiliary storage device 116 . The determination unit 140C determines OK when the determined ultraviolet irradiation amount is equal to or greater than the determination threshold. That is, it is determined that a sufficient disinfection effect is obtained. On the other hand, when the obtained ultraviolet irradiation amount is less than the determination threshold value, it is determined as NG. That is, it is determined that a sufficient disinfection effect is not obtained.

The determination result output unit 140D performs processing for outputting the determination result by the determination unit 140C. In this embodiment, the determination result is displayed on display 128 .

FIG. 7 is a diagram showing an example of a screen display of determination results.

(A) of the same figure shows an example of a screen display when it is determined to be OK. FIG. 4B shows an example of the screen display when it is determined as NG.

As shown in (A) and (B) of the figure, the captured image Im and the information If indicating the judgment result are displayed. The captured image Im is displayed in the image display area R1, and the information If indicating the determination result is displayed in the determination result display area R2. As information If indicating the determination result, if the determination result is OK, the characters "Disinfection OK" are displayed as shown in FIG. Also, if the determination result is NG, the characters "Disinfection NG" are displayed as shown in FIG.

[Inspection methods]
Next, a disinfection effect inspection method using the inspection system 1 of the present embodiment will be described.

FIG. 8 is a flow chart showing the inspection procedure.

First, the inspection card 20 is installed at the location to be inspected (step S1). A location to be inspected is set within a space to be inspected. A space to be inspected is a space irradiated with ultraviolet rays from a fixed position. That is, it is a space in which the ultraviolet irradiation device 10 is installed. In this embodiment, it is installed in the room 2 in which the ultraviolet irradiation device 10 is installed.

Next, the inspection card 20 is exposed for a specified time (step S2). That is, the ultraviolet irradiation device 10 is operated for a specified time, and the measurement sheet 24 provided on the inspection card 20 is exposed for a specified time. Note that operating the ultraviolet irradiation device 10 for a specified time means lighting the ultraviolet light source for a specified time. The prescribed time (exposure time) is a time determined in advance. As an example, the time is set so that the object (bacteria, virus, etc. to be disinfected) can be disinfected when irradiated with a specified illuminance. "Can be disinfected" includes the case where the object can be almost sterilized or inactivated (for example, the case where 99.9% sterilization or inactivation can be achieved).

Next, the inspection card 20 exposed for the specified time is photographed (step S3). In this embodiment, the inspection card 20 is photographed by the camera 120 provided in the inspection apparatus 100 .

When the inspection card 20 is photographed, the inspection device 100 performs a disinfection effect determination process (step S4).

FIG. 9 is a flow chart showing the procedure of the disinfection effect determination process performed by the inspection device.

First, an image of the inspection card 20 is acquired (step S4-1). Next, the obtained image is analyzed to specify the color (color development value) of the measurement sheet 24 (step S4-2). At this time, calibration processing is performed using the coloring chart 30 . This allows more accurate color identification. Next, based on the specified color, the amount of UV irradiation is specified (step S4-3). This processing is performed with reference to the lookup table 142 . Next, the disinfection effect is determined based on the specified ultraviolet irradiation dose (step S4-4). Specifically, the specified ultraviolet irradiation amount is compared with the determination threshold. If the specified ultraviolet irradiation dose is equal to or greater than the determination threshold value, it is determined that a sufficient disinfection effect has been obtained and that the result is "OK". On the other hand, when the specified ultraviolet irradiation amount is less than the determination threshold value, it is determined as "NG" because a sufficient disinfection effect is not obtained.

After the disinfection effect determination process, the inspection device 100 outputs the determination result (step S5). That is, the judgment result is displayed on the display 128 as shown in FIG.

As described above, according to the inspection system 1 of the present embodiment, the disinfection effect can be inspected simply by photographing the inspection card 20 . In addition, since the coloring state of the measurement sheet 24 can be read quantitatively, the disinfection effect can be quantitatively inspected. Furthermore, since calibration is also performed, accurate and stable inspection can be realized.

Disinfection by ultraviolet rays has the drawback that shadowed areas where ultraviolet rays do not reach are not disinfected at all, but by using the inspection system 1 of this embodiment, the disinfection effect can be easily and accurately confirmed.

In addition, although the ultraviolet light source deteriorates over time, the deterioration state can be easily and accurately confirmed by using the inspection system 1 of the present embodiment.

[Modification]
[Selection of target object and ultraviolet species]
As described above, the amount of ultraviolet irradiation required for disinfection varies depending on the target (bacteria, virus, etc. to be disinfected), the type of ultraviolet light (wavelength), and the like. Therefore, it is more preferable to be able to select the target object, the type of ultraviolet rays, etc. according to the purpose, application, situation, and the like. In this case, a determination threshold is determined for each object, each type of ultraviolet rays, or each combination thereof.

The selection process is performed using the display 128 and the touch panel 130, for example. Specifically, a list of selectable objects and/or ultraviolet rays is displayed on the display 128 and selected by a touch operation using the touch panel 130 .

[Shooting navigation]
When the inspection card 20 is photographed, navigation for photographing may be performed so that a predetermined image is photographed. For example, a frame is displayed superimposed on the live view image, and guidance is provided to place the inspection card 20 within the frame and take an image. The frame has a shape corresponding to the outer shape of the inspection card 20 and is displayed at a fixed position within the screen. When photographing, the inspection card 20 is photographed in a predetermined orientation. For example, as shown in FIG. 7, the image is taken with the coloring chart 30 on the right side. This facilitates the extraction process of the measurement sheet 24 and the coloring chart 30 .

[Second embodiment]
As described above, the amount of UV irradiation is determined by the integrated value of the illuminance with respect to time (UV dose=illuminance×irradiation time). On the other hand, the illuminance varies depending on the distance from the light source. Therefore, when the distance from the light source is known, more appropriate determination results can be obtained by determining the disinfection effect in consideration of the distance from the light source.

Below, the case of examining the disinfection effect considering the distance from the light source will be described. Since the configuration other than the inspection device is the same as that of the first embodiment, only the inspection device will be described here.

[Constitution]
FIG. 10 is a functional block diagram of the inspection device.

The inspection apparatus 100 of the present embodiment differs from the inspection apparatus of the first embodiment in that it has the function of the distance information acquisition section 140E.

The distance information acquisition unit 140E performs processing for acquiring information on the distance between the ultraviolet light source and the inspection target location. The position of the ultraviolet light source is specified by the installation position of the ultraviolet irradiation device 10 . Therefore, the distance between the ultraviolet light source and the location to be inspected is obtained as the distance between the ultraviolet irradiation device 10 and the location to be inspected. The location to be inspected is the installation position of the inspection card 20 . For the distance information, for example, the user inputs an actual measurement value on touch panel 130 . Moreover, when the inspection apparatus 100 is equipped with a distance measuring means, the distance can be measured using the measuring means. For example, if the inspection apparatus 100 of the present embodiment has a range sensor, the range sensor can be used to measure the distance between the ultraviolet irradiation device 10 and the location to be inspected. The acquired distance information is added to the determination unit 140C.

The determination unit 140C determines the disinfection effect based on the obtained distance information and the ultraviolet irradiation amount information read from the inspection card 20 . Specifically, information on the determination threshold value corresponding to the distance is acquired, and the acquired determination threshold value is compared with the amount of ultraviolet irradiation to determine the disinfection effect. If the amount of UV irradiation is equal to or greater than the determination threshold value, it is determined as OK, and if it is less than the determination threshold value, it is determined as NG.

The judgment threshold is determined for each section by dividing the distance into multiple sections. The determination unit 140C identifies the applicable section based on the obtained distance information, and obtains information about the determination threshold set for the identified section.

[Inspection methods]
FIG. 11 is a flow chart showing the inspection procedure.

First, the inspection card 20 is installed at the location to be inspected (step S11). Next, the inspection card 20 is exposed for a specified time (step S12). Next, the inspection card 20 exposed for the specified time is photographed (step S13). Next, the distance between the ultraviolet irradiation device 10 and the location to be inspected is measured, and the measurement result is input to the inspection device 100 (step S14). If the inspection apparatus 100 is equipped with a distance measuring means, the distance is measured using the measuring means. In this case, since distance information can be obtained directly, the process of inputting the measurement result is omitted.

When the photographing of the inspection card 20 and the input of the distance are completed, the inspection device 100 performs a disinfection effect determination process (step S15).

FIG. 12 is a flow chart showing the procedure of the disinfection effect determination process performed by the inspection device.

First, an image of the inspection card 20 is acquired (step S15-1). Next, information on the distance between the ultraviolet irradiation device 10 and the inspection target portion is acquired (step S15-2). Next, the obtained image is analyzed to specify the color (color development value) of the measurement sheet 24 (step S15-3). Next, based on the specified color, the amount of UV irradiation is specified (step S15-4). Next, the disinfection effect is determined based on the specified ultraviolet irradiation dose and the acquired distance information (step S15-5). In this process, first, information on the determination threshold is acquired based on the acquired information on the distance. Next, the acquired determination threshold is compared with the specified UV dose. If the specified ultraviolet irradiation dose is equal to or greater than the determination threshold value, it is determined that a sufficient disinfection effect has been obtained and that the result is "OK". On the other hand, when the specified ultraviolet irradiation amount is less than the determination threshold value, it is determined as "NG" because a sufficient disinfection effect is not obtained.

After completing the determination process, the inspection device 100 outputs the determination result (step S16). In this embodiment, the determination result is displayed on display 128 (see FIG. 7).

As described above, according to the inspection apparatus of the present embodiment, the disinfection effect is determined in consideration of the distance from the ultraviolet light source, so the disinfection effect at each position can be determined more appropriately.

[Modification]
[Selection of target object and ultraviolet species]
Also in the present embodiment, it is preferable that the object, the type of ultraviolet rays, and the like can be selected according to the purpose, application, situation, and the like. In this case, a determination threshold is determined for each object, for each type of ultraviolet light, or for each combination thereof, and is determined for each distance.

Also, the determination threshold can be configured to be determined by a function. That is, it is also possible to define a function for calculating a determination threshold, input distance information into the function, and obtain a determination threshold corresponding to the distance.

[Determination considering incident angle]
The illuminance also changes with the angle of incidence. Therefore, by considering the incident angle as well as the distance and determining the disinfection effect, the disinfection effect can be determined more appropriately.

The incident angle of the ultraviolet rays at the inspection target location can be roughly calculated from the irradiation direction of the ultraviolet rays from the ultraviolet light source and the direction of the inspection target location with respect to the ultraviolet light source.

FIG. 13 is a conceptual diagram of calculation of the incident angle of ultraviolet rays at the measurement target location.

As shown in the figure, when the ultraviolet irradiation device 10 is oriented vertically downward, the ultraviolet irradiation direction V1 is vertically downward.

The direction of the inspection target location with respect to the ultraviolet light source is specified as the direction V2 of the inspection target location with respect to the ultraviolet irradiation device 10 . This direction V2 is determined as the direction of a line connecting the location where the ultraviolet irradiation device 10 is installed and the location to be inspected. The length D of the line segment connecting the installation location of the ultraviolet irradiation device 10 and the inspection target location is the distance between the installation location of the ultraviolet irradiation device 10 and the inspection target location.

The incident angle θ is obtained as an angle formed by the irradiation direction V1 of the ultraviolet rays and the direction V2 of the location to be inspected with respect to the ultraviolet irradiation device 10 . The direction V2 of the location to be inspected with respect to the ultraviolet irradiation device 10 is synonymous with the installation direction of the sheet with respect to the ultraviolet light source.

When judging the disinfection effect considering the incident angle, obtain the incident angle information in advance, as in the case of the distance. Then, information on the determination threshold corresponding to the acquired incident angle and distance is acquired, and compared with the amount of UV irradiation read from the measurement sheet.

[Third embodiment]
If the inspection apparatus is equipped with a range sensor such as LIDAR, three-dimensional data of the inspection target space can be acquired on the spot. By using this three-dimensional data, it is possible to obtain the relative positional relationship between the ultraviolet light source and the inspected portion. By using the positional relationship information, the illumination effect can be inspected more appropriately. A case of inspecting the disinfection effect using three-dimensional spatial data will be described below. Since the configuration other than the inspection device is the same as that of the first embodiment, only the inspection device will be described here.

[Constitution]
FIG. 14 is a functional block diagram of the inspection device.

The inspection apparatus 100 of the present embodiment has a three-dimensional data acquisition unit 140F, a three-dimensional model generation unit 140G, a three-dimensional model output unit 140H, a position information acquisition unit 140I, and a positional relationship identification unit 140J. It is different from the inspection apparatus of the embodiment.

The 3D data acquisition unit 140F performs processing for acquiring 3D data of the space to be inspected. In the present embodiment, a range sensor provided in inspection apparatus 100 is used to obtain spatial three-dimensional data. That is, a range sensor is used to scan a space and acquire its three-dimensional data (three-dimensional point cloud data).

The 3D model generation unit 140G performs processing for generating a 3D model of the inspection target space based on the acquired 3D data. Specifically, a patch (mesh) is generated from a 3D point cloud to generate a 3D model. Since this type of processing is a well-known technique, detailed description thereof will be omitted.

The 3D model output unit 140H performs processing for outputting the generated 3D model (3D model of the processing target space).

FIG. 15 is a diagram showing an example of the output of the 3D model.

As shown in the figure, the generated three-dimensional model Md is displayed on the display 128. The displayed three-dimensional model Md is enlarged and reduced, and viewpoints are switched, etc., according to instructions from the user. For example, it is enlarged and reduced by pinch-in and pinch-out operations on the display. Also, the starting point is switched by a swipe operation. Operation detection is performed via the touch panel 130 .

The position information acquisition unit 140I performs processing for acquiring information on the installation positions of the ultraviolet irradiation device 10 and the inspection card 20 and information on the irradiation direction of the ultraviolet rays. The user designates the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20 on the three-dimensional model displayed on the display 128, and the information on the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20 is displayed. Enter Specifically, as shown in FIG. 15, by touching the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20 on the display, the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20 are displayed. Enter the information for The position information acquisition unit 140I acquires information on the touched position via the touch panel 130 and acquires information on the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20 . Dots P1 and P2 are displayed at the positions touched as the installation position of the ultraviolet irradiation device 10 and the installation position of the inspection card 20, clearly indicating the input position. In the example shown in FIG. 15, dots P1 indicate the installation position of the ultraviolet irradiation device 10, and dots P2 indicate the installation position (inspection target location) of the inspection card 20. As shown in FIG. The dots P1 indicating the installation position of the ultraviolet irradiation device 10 and the dots P2 indicating the installation position of the inspection card 20 are displayed in different colors.

Also, the user inputs the irradiation direction of the ultraviolet rays on the three-dimensional model displayed on the display 128 . This operation is performed, for example, by touching the position of the ultraviolet irradiation device 10 on the display with a finger and then sliding the finger along the irradiation direction of the ultraviolet rays. The position information acquisition unit 140I detects the sliding direction of the finger via the touch panel 130 and acquires information on the irradiation direction of the ultraviolet rays.

The positional relationship specifying unit 140J performs a process of specifying the relative positional relationship between the ultraviolet irradiation device 10 and the inspection card 20 based on the installation position information. That is, a process of identifying the relative positional relationship between the ultraviolet irradiation device 10 as the ultraviolet light source and the installation position of the inspection card 20 indicating the location to be inspected is performed. In this embodiment, the coordinates of the installation position of the ultraviolet irradiation device 10 and the coordinates of the installation position of the inspection card 20 are specified in the coordinate space set in the three-dimensional model Md, and the relative positional relationship between the two is determined. Identify.

The determination unit 140C determines the disinfection effect based on the information on the specified positional relationship, the information on the irradiation direction of the ultraviolet rays, and the information on the amount of ultraviolet irradiation read from the inspection card 20. Specifically, based on the information on the specified positional relationship and the information on the irradiation direction of the ultraviolet rays, the information on the relevant judgment threshold is acquired, and the acquired judgment threshold and the amount of ultraviolet irradiation are compared to determine the disinfection effect. judge. If the amount of UV irradiation is equal to or greater than the determination threshold value, it is determined as OK, and if it is less than the determination threshold value, it is determined as NG.

The determination threshold is determined for each block by dividing the space into a plurality of blocks based on the installation position of the ultraviolet irradiation device 10 . For each block, a determination threshold is set according to the irradiation direction of the ultraviolet rays. The determining unit 140C identifies the corresponding block based on the identified positional relationship information, and acquires information about the determination threshold set for the identified block. That is, the block to which the inspection target location belongs is specified, and the information of the determination threshold set for the specified block is acquired.

[Inspection methods]
FIG. 16 is a flow chart showing the inspection procedure.

First, the space to be inspected is three-dimensionally scanned (step S21). In this embodiment, this processing is performed using a range sensor provided in the inspection apparatus 100. FIG.

Next, a three-dimensional model of the inspection target space is generated (step S22). In this embodiment, this processing is performed by the inspection apparatus 100 . The inspection apparatus 100 generates a three-dimensional model of the inspection space from the three-dimensional data of the inspection space obtained by scanning the inspection space.

Next, the positional information of the ultraviolet irradiation device 10 and the location to be inspected, and the information of the irradiation direction of the ultraviolet rays are input to the inspection device 100 (step S23). The inspection apparatus 100 displays a three-dimensional model of the space to be inspected on the display 128, and receives the input of the position of the ultraviolet irradiation device 10 and the inspection target portion, and the input of the irradiation direction of the ultraviolet rays. The user touches the installation position of the ultraviolet irradiation device 10 and the position of the inspection target location on the three-dimensional model displayed on the display 128 to input the position information of the ultraviolet irradiation device 10 and the inspection target location. Also, the user inputs the irradiation direction of the ultraviolet rays by sliding the finger along the irradiation direction of the ultraviolet rays on the three-dimensional model displayed on the display 128 .

Next, the inspection card 20 is installed at the location to be inspected (step S24). The installation position is the position input to the inspection apparatus 100 as the location to be inspected. Next, the inspection card 20 is exposed for a specified time (step S25). Next, the inspection card 20 exposed for the specified time is photographed (step S26). Photographing is performed using a camera 120 provided in the inspection apparatus 100 . When the photographing of the inspection card 20 is completed, the inspection apparatus 100 performs a disinfection effect determination process (step S27).

FIG. 17 is a flow chart showing the procedure of the disinfection effect determination process performed by the inspection device.

First, an image of the inspection card 20 is acquired (step S27-1). Next, the input positional information of the ultraviolet irradiation device 10 and the inspected portion and the information of the irradiation direction of the ultraviolet rays are obtained (step S27-2). Next, based on the acquired positional information, the positional relationship between the ultraviolet irradiation device 10 and the inspected portion is identified (step S27-3). Next, the obtained image is analyzed to specify the color (color development value) of the measurement sheet 24 (step S27-4). Next, based on the specified color, the amount of UV irradiation is specified (step S27-5). Next, the disinfection effect is determined based on the information on the specified positional relationship and the information on the amount of UV irradiation (step S27-6). Specifically, first, based on the specified information on the positional relationship and information on the irradiation direction of the ultraviolet rays, information on the corresponding determination threshold is acquired. Next, the acquired determination threshold and the amount of UV irradiation are compared. As a result of the comparison, if the amount of UV irradiation is equal to or greater than the determination threshold value, it is determined as OK. On the other hand, when the ultraviolet irradiation amount is less than the determination threshold, it is determined as NG.

After completion of the determination process, the inspection device 100 outputs the determination result of the disinfection effect (step S28). That is, the judgment result is displayed on the display 128 .

FIG. 18 is a diagram showing an example of display of determination results.

As shown in the figure, the display 128 displays the determination result of the disinfection effect and the three-dimensional model Md of the space to be inspected. The determination result is displayed in the determination result display area R12 set in the display area of the display 128. FIG. On the other hand, the three-dimensional model Md is displayed in the three-dimensional model display area R11 set in the display area of the display 128. FIG.

In the determination result display area R12, the captured image Im and information If indicating the determination result are displayed as the determination result. As for the information If indicating the judgment result, when the judgment result is OK, the characters "Disinfection OK" are displayed as shown in the figure. On the other hand, if the judgment result is NG, the characters "Disinfection NG" are displayed.

On the three-dimensional model Md displayed in the three-dimensional model display area R11, a dot P1 indicating the installation position of the ultraviolet irradiation device 10 and a dot P2 indicating the inspection target location (installation position of the inspection card 20) are superimposed. displayed. The dot P1 indicating the installation position of the ultraviolet irradiation device 10 and the dot P2 indicating the inspection target portion are displayed in different colors.

Also, the three-dimensional model Md displayed in the three-dimensional model display area R11 is enlarged and reduced, and the viewpoint is switched, etc., according to instructions from the user.

As described above, according to the inspection apparatus of the present embodiment, it is possible to easily specify the positional relationship between the ultraviolet light source and the location to be inspected, and inspect the disinfection effect. In addition, since the inspection is performed in consideration of the positional relationship between the ultraviolet light source and the inspected portion, the disinfection effect at each position can be determined more appropriately.

[Modification]
[Inspection of multiple locations]
Multiple locations can be inspected at once. When inspecting a plurality of locations at once, in the step of inputting the position information of the ultraviolet irradiation device 10 and the location to be inspected, and the information on the irradiation direction of the ultraviolet rays to the inspection device 100 (step S23), all inspection targets Enter the location information of the place. In this case, for example, all inspection target locations on the three-dimensional model displayed on the display 128 are touched.

In addition, in the step of installing inspection cards 20 at inspection target locations (step S24), inspection cards 20 are installed at all inspection target locations.

Further, in the step of photographing the inspection card 20 after exposure (step S26), all the inspection cards 20 installed at each inspection target location are photographed. At this time, the inspection card 20 is photographed in association with the information of the inspection target portion. For example, a location to be inspected is specified on the 3D model displayed on the display 128 (by touching the dot displayed at the location specified as the location to be inspected), and the inspection card 20 placed at that location is photographed. .

In the step of determining the disinfection effect (step S27), the disinfection effect is determined for each inspection target location based on the image of the inspection card 20 captured in association with each inspection target location.

FIG. 19 is a diagram showing an example of display of determination results when inspecting multiple locations at once.

As shown in the figure, a three-dimensional model Md is displayed, and the determination results of each inspection target location are individually displayed on the three-dimensional model. Specifically, an inspection target location is indicated by a dot P2, and the determination result at each inspection target location is individually displayed in a balloon SB extending from each dot P2.

FIG. 20 is a diagram showing another example of display of determination results when inspecting multiple locations at once.

As shown in the figure, in this example, the three-dimensional model Md of the inspection target space is displayed in the three-dimensional model display area R11. Further, the detailed information of the designated inspection target portion is displayed in the detailed information display area R13.

In the three-dimensional model display area R11, the three-dimensional model Md of the inspection target space, dots P2 indicating inspection target locations, and the determination results of each inspection target location are displayed. The determination result is displayed in a balloon.

In the detailed information display area R13, as detailed information, an image (captured image) Im of the inspection card 20 installed at the specified inspection target location, and information If indicating the determination result thereof are displayed.

The location to be inspected is specified by touching the dot P2 of the location to be inspected for which detailed display is desired on the three-dimensional model Md displayed in the three-dimensional model display area R11. Each time the dot P2 is touched, the detailed information of the touched inspection target portion is displayed in the detailed information display area R13.

In this example, the three-dimensional model Md and the detailed information are displayed on the same screen, but the detailed information can be displayed by switching screens. For example, as shown in FIG. 19, a three-dimensional model may be displayed on the full screen, and when a dot of an inspection target location is touched, the screen may be switched to display detailed information on the touched inspection target location. good.

[Processing procedure]
In the above-described embodiment, the procedure of setting the inspection card 20, exposing, and photographing after inputting the positional information and the like into the inspection apparatus 100 is adopted. can be changed. For example, it is also possible to employ a procedure in which the inspection card 20 is installed, exposed, photographed, then the space to be inspected is scanned, and the positional information and the like are input.

[Acquisition of spatial 3D data]
In the above embodiment, the range sensor provided in the inspection apparatus 100 is used to acquire the three-dimensional data of the inspection target space, but the method of acquiring the three-dimensional data of the inspection target space is It is not limited to this. A configuration in which three-dimensional data measured by a device other than the inspection device 100 is acquired may be employed. Alternatively, the data of the three-dimensional model of the inspection target space may be obtained directly.

[Augmented reality display, etc.]
In the above-described embodiment, when outputting the inspection result, the three-dimensional model Md of the inspection target space is displayed on the display 128, and information such as the inspection target location and the inspection result is displayed superimposed on the three-dimensional model Md. However, a so-called Augmented Reality (AR) technique may be adopted to output the inspection results. For example, a configuration may be adopted in which information such as an inspection target location and inspection results is displayed superimposed on an image obtained from a camera (a so-called live view image).

[Fourth embodiment]
As described above, the inspection card 20 can determine the amount of UV irradiation at the installation location from the color development of the measurement sheet 24 . By installing a plurality of inspection cards 20 in the space to be inspected and determining the amount of ultraviolet irradiation at the installation position of each inspection card 20, the irradiation distribution of ultraviolet rays in the space to be inspected (irradiation amount on the surface irradiated with ultraviolet rays distribution) can be estimated. A method for determining the irradiation distribution of ultraviolet rays using a plurality of inspection cards 20 will be described below.

[Constitution]
FIG. 21 is a functional block diagram of the inspection apparatus.

The inspection apparatus 100 of the present embodiment differs from the inspection apparatus of the third embodiment in that it further has the functions of an irradiation distribution estimation section 140K and a map generation section 140L.

The irradiation distribution estimation unit 140K performs a process of estimating the ultraviolet irradiation distribution (distribution of the ultraviolet irradiation amount on the surface irradiated with ultraviolet rays) based on information on the ultraviolet irradiation amount measured at each inspection target location. A well-known method is adopted for estimating the distribution. Moreover, when the specification of the ultraviolet irradiation device 10 is known, a method of referring to the information of the specification of the ultraviolet irradiation device 10 and estimating it can also be adopted. For example, when information such as the illuminance distribution of the ultraviolet irradiation device 10 is known, the information such as the illuminance distribution can be used to estimate the irradiation distribution of ultraviolet rays.

The map generation unit 140L performs a process of generating a map showing the ultraviolet irradiation distribution based on the information on the estimated ultraviolet irradiation distribution. A map showing the irradiation distribution of ultraviolet rays is a map that visualizes the distribution of the irradiation amount of ultraviolet rays on a surface irradiated with ultraviolet rays by using colors or color densities. FIG. 22 is a diagram showing an example of a map. This figure shows an example of displaying a map Mp superimposed on the three-dimensional model Md of the space to be inspected. As shown in the figure, the map Mp visualizes the distribution of the amount of ultraviolet irradiation on the surface irradiated with ultraviolet rays. In the example shown in the figure, the distribution is visualized by color shading.

[Inspection methods]
FIG. 23 is a flow chart showing the inspection procedure.

First, the space to be inspected is three-dimensionally scanned (step S31). Next, a three-dimensional model of the space to be inspected is generated (step S32). Next, the positional information of the ultraviolet irradiation device 10 and the location to be inspected, and the information of the irradiation direction of the ultraviolet rays are input to the inspection device 100 (step S33). A plurality of locations to be inspected are set. Enter the position information of all set inspection target locations. Next, the inspection card 20 is installed at each inspection target location (step S34). Next, each inspection card 20 is exposed for a specified time (step S35). After exposure, the inspection card 20 is photographed for each location to be inspected (step S36). That is, the inspection card 20 installed at each inspection target location is individually photographed in association with the position information of the inspection target location. When the photographing of all inspection cards 20 is completed, the inspection device 100 performs a disinfection effect determination process (step S37). After that, a process of generating a map showing the irradiation distribution of ultraviolet rays is performed (step S38).

FIG. 24 is a flowchart showing the procedure of map generation processing.

First, information on the amount of UV irradiation at each inspection target location is acquired (step S38-1). The amount of UV irradiation at each inspection target location is obtained individually by the image analysis unit 140B. Therefore, the information is acquired from the image analysis unit 140B.

Next, the UV irradiation distribution is estimated based on the acquired UV dose information at each inspection target location (step S38-2). That is, in the space to be inspected, the distribution of the irradiation amount of ultraviolet rays on the surface irradiated with ultraviolet rays is estimated.

Next, a map showing the estimated UV irradiation distribution is generated (step S38-3). That is, a map that visualizes the irradiation distribution of ultraviolet rays is generated.

The inspection device 100 outputs the generated map to the display 128 together with the determination result of the disinfection effect (step S39).

FIG. 25 is a diagram showing an example of a display of a map showing the irradiation distribution of ultraviolet rays and a determination result.

As shown in the figure, a map Mp is displayed superimposed on the three-dimensional model Md of the inspection target space. In addition, inspection target locations are indicated by dots P2, and determination results for each inspection target location are individually displayed in balloons SB extending from dots P2.

As described above, according to the inspection apparatus of the present embodiment, in addition to the determination result of the disinfection effect at each inspection target location, the estimated UV irradiation distribution is displayed on the map, so that the disinfection effect can be evaluated. Easy to grasp. This makes it possible to easily adjust the arrangement of the ultraviolet irradiation devices, for example, adjust the position, the number, and the direction of irradiation, making it possible to easily achieve the desired disinfection effect. Become.

[Modification]
In the above-described embodiment, the map is generated and the disinfection effect is determined. However, the map may be generated only.

In addition, it is preferable that the output of the results can be switched according to the user's instruction, such as displaying only the map or displaying only the determination result of the disinfection effect. Furthermore, it is more preferable to enable detailed display of the determination result of the disinfection effect of each inspection target location (see FIG. 20).

[Other embodiments]
[Examination card]
FIG. 26 is a diagram showing another example of an inspection card.

As shown in the figure, the inspection card 20 of this example does not have a coloring chart on the exterior case 22 . Thus, the coloring chart does not necessarily have to be provided integrally with the inspection card 20 . However, in order to carry out calibration, photography is done together with the coloring chart. For example, as shown in FIG. 26, a sheet (photographing sheet) 50 on which the coloring chart 30 is printed is prepared, and the inspection card 20 is placed on the sheet 50 and photographed. As a result, the inspection card 20 and the coloring chart 30 can be captured within the same angle of view.

Also, in the above embodiment, the shape of the inspection card 20 is a so-called card shape, but the shape of the inspection card 20 is not limited to this. Various shapes can be employed, including three-dimensional shapes.

Furthermore, it is also possible to use the measurement sheet alone. However, even in this case, the photographing is performed together with the coloring chart.

[Measurement sheet]
The measurement sheet 24 can also be configured to be sensitive only to ultraviolet rays in a specific wavelength range. For example, by providing a band-pass filter, it is possible to have a configuration that is sensitive only to ultraviolet light in a specific wavelength range.

[Record History]
The inspection apparatus 100 is preferably configured to record inspection results and read out past inspection results as necessary. The inspection result includes information on the amount of ultraviolet irradiation and the determination result of the disinfection effect, and is recorded in the auxiliary storage device 116 together with information such as the date and time of the inspection, the location of the inspection, and the person in charge of the inspection. This makes it possible, for example, to display past inspection results in a graph, estimate the deterioration state of the ultraviolet light source from the past search results, notify replacement of the ultraviolet light source, and the like. The inspection apparatus 100 preferably has a function of performing these processes. For example, a function to obtain past inspection result information and display it in a graph in a predetermined format, a function to obtain past inspection result information and estimate the deterioration state of the ultraviolet light source, and a function to obtain past inspection result information It is preferable to have a function of acquiring information, determining whether or not the ultraviolet light source needs to be replaced, and notifying the user. The deterioration state of the ultraviolet light source is estimated, for example, from time-series changes in the amount of ultraviolet irradiation measured at a fixed point. Likewise, whether or not the ultraviolet light source needs to be replaced is determined from the time-series change in the amount of ultraviolet irradiation measured at a fixed point. For example, it is determined that replacement is necessary when the amount of UV irradiation below the threshold is continuously measured a predetermined number of times.

[Inspection device]
In the above-described embodiment, an example in which the inspection apparatus is composed of a tablet computer with a camera has been described, but the hardware configuration of the inspection apparatus is not limited to this. In addition, it can also be configured by a smart phone, a personal computer, or the like.

Also, the inspection device does not necessarily have to be equipped with a camera. If the inspection device does not have a camera, an image captured by an external camera is acquired.

In addition, the inspection device does not necessarily have to consist of a single computer. For example, it can consist of a client computer and a server computer.

In addition, the functions of the inspection device are realized by various processors. Various processors are general-purpose processors that run programs and function as various processing units, such as CPUs and/or GPUs (Graphic Processing Units) and FPGAs (Field Programmable Gate Arrays). Programmable Logic Device (PLD), which is a programmable processor, ASIC (Application Specific Integrated Circuit), etc. A dedicated electric circuit, which is a processor with a circuit configuration specially designed to execute specific processing, etc. included. A program is synonymous with software.

A single processing unit may be composed of one of these various processors, or may be composed of two or more processors of the same type or different types. For example, one processing unit may be composed of a plurality of FPGAs or a combination of a CPU and an FPGA. Also, a plurality of processing units may be configured by one processor. As an example of configuring a plurality of processing units with a single processor, firstly, a single processor is configured with a combination of one or more CPUs and software, as typified by computers used for clients and servers. , in which the processor functions as a plurality of processing units. Second, as typified by System on Chip (SoC), etc., there is a form of using a processor that realizes the function of the entire system including multiple processing units with a single IC (Integrated Circuit) chip. be. In this way, the various processing units are configured using one or more of the above various processors as a hardware structure.

1 Inspection system 2 Room 2A Ceiling surface 10 Ultraviolet irradiation device 20 Inspection card 22 Exterior case 22A Plate 22B Plate 24 Measurement sheet 26 Window 28 Adhesive sheet 28A Release paper 28a Color sample 28b Color sample 28e Color sample 30 Color development chart 50 Sheet 100 Inspection device 110 CPU
112 RAMs
114 ROMs
116 auxiliary storage device 118 sensor group 120 camera 122 speaker 124 microphone 126 communication interface 128 display 130 touch panel 140A image acquisition unit 140B image analysis unit 140C determination unit 140D determination result output unit 140E distance information acquisition unit 140F three-dimensional data acquisition unit 140G three-dimensional Model generation unit 140H Three-dimensional model output unit 140I Position information acquisition unit 140J Positional relationship identification unit 140K Irradiation distribution estimation unit 140L Map generation unit 142 Lookup table If Information indicating determination results Im Image Md of photographed inspection card Three-dimensional model Mp Map showing UV irradiation distribution P1 Dot P2 Dot R1 Image display area R2 Judgment result display area R11 3D model display area R12 Judgment result display area R13 Detailed information display area SB Balloons S1 to S5 Inspection procedure V1 Direction of UV irradiation V2 Direction of inspection target location θ with respect to ultraviolet irradiation device Incident angle S4-1 to S4-4 Disinfection effect determination processing procedures S11 to S16 Inspection procedures S15-1 to S15-5 Disinfection effect determination processing procedures S21 to S28 Inspection procedures S27-1 to S27-6 Disinfection effect determination processing procedures S31 to S39 Inspection procedures S38-1 to S38-3 Map generation processing procedures

Claims (14)

1. with a processor
   The processor
   A sheet that changes color depending on the amount of ultraviolet irradiation, and is exposed for a specified time in a space where ultraviolet rays are irradiated from a fixed ultraviolet light source, together with a chart showing the relationship between the amount of ultraviolet irradiation and color. a process of acquiring a photographed image;
   A process of analyzing the acquired image and determining the amount of ultraviolet irradiation at the installation location of the sheet;
   A process of determining the disinfection effect at the installation location of the sheet based on the obtained ultraviolet irradiation amount;
   I do,
   inspection equipment.
2. The processor
   further performing a process of acquiring information on the relative positional relationship between the ultraviolet light source and the sheet;
   Determining the disinfection effect based on the obtained positional relationship information and the obtained ultraviolet irradiation amount;
   The inspection device according to claim 1.
3. The processor
   a process of obtaining a three-dimensional model of the space;
   a process of acquiring information on the position of the ultraviolet light source and the position of the sheet on the three-dimensional model;
   and
   calculating the relative positional relationship between the ultraviolet light source and the sheet based on information on the position of the ultraviolet light source and the position of the sheet on the three-dimensional model, and acquiring information on the positional relationship; do,
   The inspection device according to claim 2.
4. The processor
   further performing processing for displaying the three-dimensional model on a display;
   Receiving designation of the position of the ultraviolet light source and the position of the sheet on the three-dimensional model displayed on the display, and acquiring information on the position of the ultraviolet light source and the position of the sheet on the three-dimensional model. ,
   The inspection device according to claim 3.
5. The processor
   A process of estimating the irradiation distribution of ultraviolet rays in the space based on the information of the ultraviolet irradiation amount at the plurality of points in the space, which is obtained by installing the sheet at the plurality of points in the space;
   a process of generating a map indicating the estimated irradiation distribution;
   a process of superimposing the generated map on the three-dimensional model and displaying it on a display;
   do more
   The inspection device according to claim 3 or 4.
6. The information on the positional relationship includes information on the distance between the ultraviolet light source and the sheet, and information on the angle formed by the installation direction of the sheet with respect to the ultraviolet light source and the irradiation direction of the ultraviolet light.
   The inspection device according to any one of claims 2 to 5.
7. The processor
   Comparing the obtained ultraviolet irradiation amount with a threshold value to determine the disinfection effect;
   The inspection device according to any one of claims 1 to 6.
8. a sheet whose color changes according to the amount of UV irradiation;
   A chart showing the relationship between the amount of UV irradiation and the color;
   a photographic device;
   a display;
   an inspection apparatus according to any one of claims 1 to 7;
   inspection system with
9. The chart is integrally provided with a holding member that holds the sheet,
   An inspection system according to claim 8 .
10. The sheet has a band-pass filter, and changes color depending on the amount of ultraviolet radiation in a specific wavelength range.
    Inspection system according to claim 8 or 9.
11. placing a sheet whose color changes according to the amount of ultraviolet irradiation in a space irradiated with ultraviolet rays from a UV light source at a fixed position;
    a step of photographing the sheet exposed for a specified time in the space together with a chart showing the relationship between the amount of UV irradiation and the color;
    a step of analyzing the photographed image and determining the amount of ultraviolet irradiation at the installation location of the sheet;
    a step of determining the disinfection effect at the location where the sheet is installed based on the obtained ultraviolet irradiation amount;
    including,
    Inspection methods.
12. A sheet that changes color depending on the amount of ultraviolet irradiation, and is exposed for a specified time in a space where ultraviolet rays are irradiated from a fixed ultraviolet light source, together with a chart showing the relationship between the amount of ultraviolet irradiation and color. A function to acquire the photographed image,
    A function of analyzing the acquired image and determining the amount of ultraviolet irradiation at the installation location of the sheet;
    A function of determining the disinfection effect at the installation location of the sheet based on the obtained ultraviolet irradiation amount;
    An inspection program that realizes on a computer.
13. A recording medium that is non-temporary and computer-readable, in which the program according to claim 12 is recorded.
14. with a processor
    The processor
    A plurality of sheets that change color according to the amount of ultraviolet irradiation, and are exposed for a specified time at a plurality of locations in a space where ultraviolet rays are irradiated from a fixed ultraviolet light source. A process of acquiring a plurality of images taken together with a chart showing the relationship of
    A process of analyzing each of the acquired images and determining the amount of ultraviolet irradiation at the installation location of each of the sheets;
    a process of obtaining a three-dimensional model of the space;
    a process of acquiring position information of each of the sheets on the three-dimensional model;
    a process of estimating the irradiation distribution of ultraviolet rays in the space based on information on the position of each sheet on the three-dimensional model and information on the amount of ultraviolet irradiation at the position of each sheet;
    a process of generating a map indicating the estimated irradiation distribution;
    a process of superimposing the generated map on the three-dimensional model and displaying it on a display;
    I do,
    inspection equipment.

Images