JP2022123487A - Sterilization and virus inactivation system - Google Patents

Abstract

To provide a constitution recognizable a sterilized or virus-inactivated range even when sterilizing or virus-inactivating an object by invisible light irradiated from a portable terminal.SOLUTION: On a desk surface 11 of a desk 10 that sterilizes or inactivates virus, a plurality of information codes C1 to C6 recorded with sterilization information to a surface to be irradiated by invisible light of a wavelength capable of sterilizing or inactivating viruses from a portable terminal 20 are attached in a dispersed manner. In the portable terminal 20, an imaging unit 24 is disposed so that the imaging range matches an irradiation range of the irradiation unit 23 capable of irradiating the invisible light. The imaging range when the information code is imaged by the imaging section 24 is specified as the irradiation range of the invisible light, and information about the specified irradiation range is stored in a storage unit 22.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a sterilization/virus inactivation system that irradiates an object to be sterilized or virus inactivated with invisible light having a wavelength capable of sterilization or virus inactivation.

Currently, at sites where hygiene management is particularly required due to changes in social conditions due to the corona virus, it is required to constantly sterilize various things and inactivate viruses. As a means for sterilization and virus inactivation, a device for irradiating invisible light having a wavelength capable of sterilization or virus inactivation can be employed. As a device that emits invisible light having a wavelength capable of sterilizing or inactivating viruses, for example, a sterilization device disclosed in Patent Document 1 below is known. This sterilization device is intended to sterilize medical instruments and nursing care products used in medical and nursing care sites, and an ultraviolet LED light source is arranged in a box that can accommodate the sterilization target. The object to be sterilized is sterilized by the emitted ultraviolet rays. For example, there is also known a device that sterilizes the entire space by irradiating it with ultraviolet light on the premise that it is in an unmanned environment.

JP 2018-175506 A

By the way, as described above, in a sterilization device equipped with a case for ultraviolet sterilization of stored items and a sterilization device that irradiates the entire space with ultraviolet rays in an unmanned environment, sterilization or virus inactivation (hereinafter also simply referred to as sterilization etc.) is performed. There is a problem that possible objects tend to be limited. Therefore, by using a portable terminal that emits light that can be used for sterilization, the user can irradiate a range desired by the user with the light, so that the object can be easily sterilized. , sterilization or virus inactivation.

However, since the light that can be used for sterilization or virus inactivation is invisible light such as ultraviolet rays, the irradiation range cannot be visually recognized. There is

The present invention has been made to solve the above-mentioned problems, and its object is to sterilize or inactivate an object with invisible light emitted from a mobile terminal. To provide a configuration capable of recognizing an inactivated range.

In order to achieve the above object, the invention described in claim 1 of the scope of claims includes:
A sterilization/virus inactivation system (1) that irradiates an object (10) to be sterilized or virus inactivated with invisible light having a wavelength capable of sterilization or virus inactivation from a mobile terminal (20),
A plurality of information codes (C1 to C6) recording predetermined information on the surface (11) to be irradiated with the invisible light are dispersedly attached to the object,
The mobile terminal is
an irradiation unit (23) capable of irradiating the invisible light;
an imaging unit (24) arranged such that at least a part of the imaging range coincides with the irradiation range of the irradiation unit;
an irradiation range identification unit (21) for identifying the imaging range when the information code is imaged by the imaging unit as an irradiation range irradiated with the invisible light;
a storage unit (22) storing information about the irradiation range specified by the irradiation range specifying unit;
characterized by comprising
It should be noted that the symbols in parentheses above indicate the corresponding relationship with specific means described in the embodiments to be described later.

In the first aspect of the invention, the object to be sterilized or virus-inactivated includes a plurality of surfaces on which predetermined information is recorded on a surface to be irradiated with invisible light having a wavelength capable of sterilization or virus-inactivation from the portable terminal. information code is distributed. In the mobile terminal, the imaging unit is arranged so that at least a part of the imaging range matches the irradiation range of the irradiation unit capable of irradiating the invisible light, and the imaging range when the information code is imaged by the imaging unit is the invisible light. The irradiation range of light is specified by the irradiation range specifying unit, and information about the specified irradiation range is stored in the storage unit.

As a result, even when the target object is sterilized (sterilized or virus inactivated) by invisible light emitted from the mobile terminal, information on the irradiation range is specified based on the imaged information code and stored in the storage unit. , the sterilized range of the object can be recognized.

In the second aspect of the present invention, a server is provided that acquires from the mobile terminal information about the irradiation range specified by the irradiation range specifying unit and manages the information. As a result, it is possible not only to manage the sterilized object on the server using a mobile terminal, but also to check whether the object has already been sterilized or not by taking an image of the information code attached to the object. You can inquire.

In the third aspect of the present invention, the captured images in which the information code is captured by the imaging unit are connected by the image connecting unit based on the information code, and this connected image is displayed on the display unit as the irradiation range irradiated with the invisible light. be. As a result, the connected image becomes an image showing the sterilized range of the object, so that the sterilized range of the object can be visualized by looking at the connected image displayed on the display unit. can be recognized.

In the invention of claim 4, since the information code is generated so as to reflect when the invisible light is irradiated, the information code cannot be visually recognized by humans. can be held.

In the invention of claim 5, the portable terminal includes a distance measuring unit capable of measuring a distance from the portable terminal for each irradiation area obtained by dividing the surface to be irradiated with the invisible light into a plurality of areas, and the distance measuring unit. and an effectiveness calculation unit that calculates so that the effectiveness of sterilization and virus inactivation in units of irradiation areas increases as the distance measured by the unit decreases. As a result, it is possible not only to recognize the effectiveness of sterilization and virus inactivation, which is the so-called sterilization strength, etc., for each irradiation area, but also to easily identify areas with low effectiveness on the surface of the object to be sterilized. can grasp.

In the sixth aspect of the present invention, at least part of the plurality of information codes are generated so as to be arranged at regular intervals on a predetermined pasted material to be pasted on the object. As a result, since the distance between each information code on the predetermined paste can be grasped, the distance to each imaged information code can be measured based on the distance between each information code, so the measurement accuracy of the distance measuring unit That is, it is possible to increase the accuracy of calculation of the degree of effect by the degree-of-effect calculation unit.

In the seventh aspect of the present invention, there is provided a notification section that performs predetermined notification according to the relationship between the distance measured by the distance measurement section and the predetermined distance range. As a result, when the distance to the irradiation area is too far to produce an effective degree of effectiveness, the mobile terminal can be notified to move closer to the object, and when the distance to the irradiation area is unnecessarily close. can be notified to keep the mobile terminal away from the object. By having the worker carry out work using the portable terminal in response to this notification, it is possible to increase the effectiveness of sterilization and virus inactivation according to the predetermined distance range.

In the invention according to claim 8, in the portable terminal, the acute angle formed by the irradiation area and the irradiation direction of the invisible light is calculated by the angle calculation unit, and further considering the angle calculated in this way, the angle is calculated for each irradiation area. The effect level is calculated by the effect level calculation unit. Even if the distance to the irradiation area is the same, the closer the acute angle formed by the irradiation area and the irradiation direction of the invisible light is to 90°, the higher the effectiveness of sterilization and virus inactivation. By considering the calculated angle, it is possible to increase the accuracy of calculation of the degree of effectiveness by the degree-of-effectiveness calculation unit.

In the ninth aspect of the present invention, the degree of effectiveness is calculated by the degree of effectiveness calculation unit, further considering the irradiation time of the invisible light. The longer the irradiation time of invisible light irradiation, the higher the effectiveness of sterilization and virus inactivation. Therefore, by considering the irradiation time as described above, the effectiveness calculation unit can increase the accuracy of calculating the effectiveness. be able to.

In the tenth aspect of the present invention, the degree of effectiveness calculation section further calculates the degree of effectiveness for each irradiation region in consideration of the material of the object. For example, even with the same irradiation dose, a material with relatively high hygroscopicity may be less effective in sterilization and virus inactivation than a material with relatively low hygroscopicity. Therefore, by considering the material of the object, it is possible to increase the accuracy of calculation of the degree of effect by the degree-of-effect calculation unit.

According to the invention of claim 11, in the portable terminal, the acute angle formed by the irradiation region and the irradiation direction of the invisible light is calculated by the angle calculation unit, and when the angle calculated in this way is less than the predetermined angle, the angle calculation unit The notification unit prompts the mobile terminal to move so that the angle calculated by the unit becomes equal to or greater than the predetermined angle. When the worker performs work using the mobile terminal in response to this notification, the target is effectively irradiated with invisible light, so the effectiveness of sterilization and virus inactivation can be enhanced. .

In the invention of claim 12, when the reading unit of the mobile terminal reads the predetermined information from the information code imaged by the imaging unit, the predetermined information read by the reading unit is stored in the storage unit. It is stored in association with the irradiation range specified from the imaging range in which the code is imaged. Accordingly, by imaging the information code attached to the object, the object can be detected based on whether or not the predetermined information read from the information code is associated with the irradiation range and stored in the storage unit. It is possible to check whether work such as sterilization has been performed on the object.

In the thirteenth aspect of the invention, the predetermined information includes information about other information codes attached to the same object. Then, in the portable terminal, the direction of movement of the portable terminal to read the next information code is instructed by the movement direction instruction unit based on the predetermined information read from the information code by the reading unit. As a result, by moving the portable terminal as instructed by the movement direction instruction unit, each information code attached to the same object can be easily read, so that operations such as sterilization can be performed smoothly.

In the fourteenth aspect of the present invention, the invisible light is light with a wavelength of 250 nm or less. Light with a wavelength of 250 nm or less destroys the genetic information of viruses, but it is known that the effect of destroying human genes is small because it has poor permeability to the human epidermis. In other words, routine viral inactivation and disinfection of, for example, coronaviruses can be expected without protective clothing.

1 is an explanatory diagram showing an outline of a sterilization/virus inactivation system according to a first embodiment; FIG. 2 is a block diagram schematically illustrating the electrical configuration and the like of the mobile terminal of FIG. 1; FIG. 4 is a flowchart illustrating the flow of management processing such as sterilization performed in the mobile terminal in the first embodiment; 9 is a flowchart illustrating the flow of management processing such as sterilization performed in the mobile terminal in the second embodiment. FIG. 5A is an explanatory diagram for explaining the display state of the first display area and the second display area when the information code is read first, and FIG. FIG. 10 is an explanatory diagram for explaining the display state of the first display area and the second display area in the state of the completed range; FIG. 11 is an explanatory diagram illustrating a state in which a map indicating the degree of effectiveness is superimposed on the sterilized range and displayed on the screen in the second display area; FIG. 20 is an explanatory diagram illustrating a state in which some information codes are arranged on a sheet at predetermined intervals in the first modified example of the fourth embodiment; In the 2nd modification of 4th Embodiment, it is explanatory drawing explaining the state which replaced some information codes with many small information codes, and has arrange|positioned them. FIG. 16 is a flowchart illustrating the flow of management processing such as sterilization performed in the mobile terminal in the fifth embodiment; FIG. FIG. 20 is an explanatory diagram illustrating a state in which a pointing direction is displayed on the screen in the first display area of the display unit in the fifth embodiment;

[First embodiment]
A first embodiment embodying a sterilization/virus inactivation system of the present invention will be described below with reference to the drawings.
The sterilization/virus deactivation system 1 according to the present embodiment uses invisible light ( It is configured as a system for performing work such as sterilization on an object by irradiating it with invisible light.

In this embodiment, as shown in FIG. 1, a desk surface 11 of a desk 10 is used as an object on which work such as sterilization is performed. The desk surface 11 is formed as a rectangular plane, and information codes C1 to C6 for sterilization, etc., are attached to a total of six locations near the centers of the outer edges on the four corners and two long sides. Each of the information codes C1 to C6 is, for example, a QR code (registered trademark) of a specified size and a specified cell size, and is attached to the desk surface 11 in addition to information indicating the information code for sterilization etc. The total number of information codes (hereinafter also referred to as the total number of codes) and unique information for distinguishing from other information codes for sterilization are generated so as to be recorded as sterilization information. Therefore, "6" is recorded as the total number of codes in each of the information codes C1 to C6 attached to the desk surface 11. FIG. The sterilization information may correspond to an example of "predetermined information".

The portable terminal 20 is configured as a portable information processing device capable of radiating the invisible light in addition to the function of optically reading QR codes such as the information codes C1 to C6, bar codes, and the like. As shown in FIG. 2, the portable terminal 20 includes a control unit 21 including a CPU, a storage unit 22 including a semiconductor memory such as ROM and RAM, an irradiation unit 23 capable of emitting invisible light, and a camera. a display unit 25 whose display content is controlled by the control unit 21; an operation unit 26 that outputs an operation signal to the control unit 21 according to key operation, etc.; A portion 27 and the like are provided.

The irradiation unit 23 emits invisible light (ultraviolet rays, deep ultraviolet rays, etc.) having a wavelength capable of sterilization or virus inactivation (sterilization, etc.) to the outside through a reading port (not shown) provided on the back side of the housing. configured to irradiate. In this embodiment, light with a wavelength of 250 nm or less is employed as the invisible light. This is because light with a wavelength of 250 nm or less destroys the genetic information of viruses, but the effect of destroying human genes is small because it has poor permeability to the human epidermis.

The image capturing unit 24 captures an image of the desk surface 11, each of the information codes C1 to C6, etc. through the reading port. are placed. More specifically, the imaging unit 24 is set at a recommended distance between the target object and the mobile terminal 20 during work such as sterilization so that the imaging range matches the irradiation range of the invisible light applied to the target object. is placed inside the housing. Since the imaging unit 24 and the irradiation unit 23 are arranged in the same housing, even if at least one of the imaging unit 24 and the irradiation unit 23 is displaced due to an assembly error or the like, the imaging range can be matched with the irradiation range by calibration or the like. can be easily performed.

In the portable terminal 20 configured as described above, the image of the information code imaged by the imaging unit 24 is subjected to known decoding processing by reading processing performed by the control unit 21, so that the information code is read. The recorded information is read. When the information codes C1 to C6 are imaged by the imaging unit 24, the sterilization information such as the total number of codes is read by decoding the captured image. The control unit 21 and the imaging unit 24 that perform the process of reading the sterilization information from the information codes C1 to C6 imaged in this way can correspond to an example of the "reading unit".

Then, in the mobile terminal 20, when the object is sterilized by the invisible light emitted from the irradiation unit 23, the information code attached to the object is used by the sterilization management process performed by the control unit 21. Then, the sterilized range of the object is recognized.

The sterilization management process performed by the controller 21 when the desk surface 11 of the desk 10 is sterilized with the invisible light will be described in detail below with reference to the flowchart shown in FIG.
When management processing such as sterilization is started by the control unit 21 in response to a predetermined operation on the operation unit 26 by the operator, irradiation/imaging processing shown in step S101 of FIG. 3 is performed. In this process, the irradiation unit 23 irradiates the invisible light through the reading port, and the imaging unit 24 captures an image of the irradiation range of the invisible light. Subsequently, in the decoding process shown in step S103, the captured image is processed for decoding (decoding) the information code. If the determination processing of S105 results in No, the processing from step S101 is repeated.

When the worker directs the reading port of the portable terminal 20 toward the desk surface 11 , sterilization or the like is performed in the irradiation range of the invisible light emitted through the reading port on the desk surface 11 . In order to sterilize the entire surface of the desk surface 11, the operator moves the reading port of the mobile terminal 20 along the desk surface 11, and any one of the information codes C1 to C6 attached to the desk surface 11 is imaged. If the decoding is successful (Yes in S105), the decoded sterilization information, read date and time information, and the like are stored in the storage unit 22 in the storage processing shown in step S107. In this storage process, the imaged image successfully decoded, that is, the imaging range when the information code is imaged is specified as the irradiation range irradiated with the invisible light, and information on the irradiation range is stored as information for sterilization, etc. can be stored in the storage unit 22 in association with . Note that the control unit 21 that performs the process of specifying the imaging range when the information code is imaged as described above as the irradiation range irradiated with the invisible light may correspond to an example of the “irradiation range specifying unit”.

Subsequently, in the determination processing shown in step S109, it is determined whether or not reading of all the information codes attached to the desk surface 11 has been completed. Here, based on the information stored in the storage unit 22, the number of read information codes is less than the total number of codes. It is determined, and the processing from step S101 is repeated.

Then, when the worker completes reading all the information codes C1 to C6 (Yes in S109), the operator turns the reading port of the portable terminal 20 in order from the information code C1 to the information code C6. Work completion notification processing shown in S111 is performed. In this process, the completion of the work such as sterilization on the desk surface 11 is displayed on the screen of the display unit 25 to notify the operator, and the management process such as sterilization is completed.

After such work, when another worker performs work such as sterilization on the desk surface 11 using the portable terminal 20, the sterilization information read from the imaged information code C1 is stored in the storage unit 22. It can be confirmed that work such as sterilization is being performed on the desk surface 11 by checking that the desk surface 11 is there.

As described above, in the sterilization/virus inactivation system 1 according to the present embodiment, the desk surface 11 (target object) of the desk 10 to be sterilized or virus inactivated is sterilized or virus inactivated from the mobile terminal 20. A plurality of information codes C1 to C6 recording information for sterilization are distributed and attached to the surface to be irradiated with invisible light having a wavelength that can be sterilized. In the mobile terminal 20, the imaging unit 24 is arranged so that the imaging range matches the irradiation range of the irradiation unit 23 capable of irradiating the invisible light. The irradiation range of light is specified, and information about the specified irradiation range is stored in the storage unit 22 .

As a result, even when the target object is sterilized (sterilized or virus inactivated) by invisible light emitted from the mobile terminal 20, the irradiation range is specified based on the imaged information code and stored in the storage unit 22. The sterilized range of the object can be recognized based on the information about.

In particular, when the sterilization information (predetermined information) is read from the information codes C1 to C6 imaged by the imaging unit 24, the read sterilization information is stored in the storage unit 22 in the imaging range in which the information code is imaged. is stored in association with the irradiation range specified from . Accordingly, by capturing an image of the information code attached to the object, it is possible to determine whether or not the predetermined information read from the information code is stored in the storage unit 22 in association with the irradiation range. It is possible to confirm whether work such as sterilization has been performed on the object. For example, when the information code C1 is imaged, the sterilization information read from the information code C1 is stored in the storage unit 22, and if the date and time when the sterilization information was stored is within a predetermined period, the desk It can be confirmed that work such as sterilization has been performed on the surface 11 . In addition, the date and time when work such as sterilization was performed can also be confirmed.

It should be noted that the information stored in the storage unit 22 in the storage process of step S107 is transmitted via a predetermined network N together with the terminal information for specifying the mobile terminal 20, the worker ID for specifying the worker, and the like. may be sent to the server 2 as In this case, the server 2 functions as a management server that manages work history such as sterilization using the mobile terminal 20, and more specifically, acquires and manages information about the specified irradiation range from the mobile terminal 20. can function as As a result, not only can the server 2 use the mobile terminal 20 to manage the work history and the like related to the object that has been sterilized, etc. , the server 2 can be inquired whether the object has already been sterilized or the like. In such a configuration, even if work such as sterilization is finished in the middle, the server 2 manages the work history and the like during the work. can be contacted.

[Second embodiment]
Next, a sterilization/virus inactivation system according to a second embodiment of the present invention will be described with reference to the drawings.
The second embodiment is mainly different from the first embodiment in that the range in which sterilization or the like is completed is displayed on the screen so that the operator can sequentially visually recognize the range. Therefore, the same reference numerals are assigned to substantially the same components as in the first embodiment, and the description thereof will be omitted.

In the present embodiment, in the sterilization management process performed by the control unit 21, the captured images in which the information code is captured by the imaging unit 24 are linked based on the information code, and the linked image is irradiated with the invisible light. is displayed on the display unit 25 as an irradiation range. As a result, the connected image can be an image showing the sterilized range of the object, so that the operator can see the connected image displayed on the display unit 25, and the object can be Among them, the sterilized range can be visually recognized.

Hereinafter, in the present embodiment, the sterilization management process performed by the control unit 21 when the desk surface 11 of the desk 10 shown in FIG. describe.
When management processing such as sterilization is started by the control unit 21 in response to a predetermined operation on the operation unit 26 by the operator, the irradiation/imaging processing shown in step S201 of FIG. 4 is performed, as in the first embodiment. Then, the irradiation unit 23 irradiates the invisible light through the reading port, and the image pickup unit 24 picks up an image of the irradiation range of the invisible light.

Subsequently, the sterilization-in-progress range display process shown in step S203 is performed, and the current captured image captured by the imaging unit 24 is the range in which sterilization or the like is being performed (hereinafter, simply referred to as the sterilization-in-progress range). ) is displayed on the upper area of the display screen of the display unit 25 (hereinafter also referred to as the first display area 25a).

Next, in the decoding process shown in step S205, similarly to the first embodiment, the imaged image is processed for decoding the information code, and the sterilization information is recorded. Until the decoding of the information code is successful, the judgment processing in step S207 returns No, and the processing from step S201 is repeated. That is, the image indicating the sterilizing area displayed in the first display area 25a changes depending on the direction in which the reading port is directed.

Then, when the operator moves the reading port of the portable terminal 20 along the desk surface 11, any one of the information codes C1 to C6 attached to the desk surface 11 is imaged and successfully decoded ( Yes in S207), the sterilized image generation process shown in step S209 is performed. This processing is for generating a sterilized image indicating the range in which sterilization, etc., has been completed (hereinafter also simply referred to as the sterilized range), and stores the captured image that was successfully decoded and the previously generated image in the storage unit 22 . A new sterilized image is generated by linking the existing sterilized image with the information code as a reference. Note that when decoding is successful first and no sterilized image is stored in the storage unit 22, the successfully decoded captured image is processed as it is as the sterilized image.

Since the sterilized image stored in the storage unit 22 is generated by concatenating captured images that have been successfully decoded, even if the decoding of a new information code is successful, another decoded information code is added to the captured image. is included, the captured image and the previously generated sterilized image can be linked based on the information code. More specifically, the coordinates of each information code (for example, the coordinates of the four corners) are obtained from the captured image, and each captured image is converted to a predetermined reference plane based on the coordinates of each information code, and then connected. , to generate the sterilized image. Note that the control unit 21 that performs the sterilized image generation process can correspond to an example of an "image linking unit".

Subsequently, when the sterilized image generated as described above is stored in the storage unit 22 in the storage process shown in step S211, the sterilized range display process shown in step S213 is performed. In this process, the sterilized image generated as described above is displayed on the display screen of the display unit 25 in an area located below the first display area 25a (hereinafter also referred to as the second display area 25b). displayed on the screen as As a result, the operator can visually recognize the sterilized range of the object at the present time by looking at the display state of the second display area 25b on the display unit 25 . In addition, for example, in the state immediately after the information code C1 is successfully decoded first among the information codes C1 to C6, as illustrated in FIG. The image shown matches the image showing the sterilized range displayed on the screen in the second display area 25b.

After the sterilized image is displayed in the second display area 25b as described above, if the predetermined end operation for ending the management process such as sterilization is not performed on the operation unit 26 by the operator, (No in S215), the process from step S201 is repeated.

Then, for example, by performing an operation in which the reading port of the mobile terminal 20 is directed from the information code C1 to the information code C6 in order, the successfully decoded captured image and the previously generated sterilized image match the information code. The processing linked to the reference is repeated, and the sterilized image displayed in the second display area 25b changes so that the sterilized range of the desk surface 11 gradually expands.

After that, as illustrated in FIG. 5B, the entire desk surface 11 is displayed on the screen as the sterilized range in the second display area 25b. It can be confirmed that the sterilization etc. has been completed. Therefore, when the operator sees the display and performs the end operation (Yes in S215), the management process such as sterilization ends.

As described above, in the sterilization/virus inactivation system 1 according to the present embodiment, the imaged images in which the information code is imaged by the imaging unit 24 are connected based on the information code, and this connected image is the invisible light. is displayed in the second display area 25b of the display unit 25 as the irradiated irradiation range. As a result, the connected image becomes an image indicating the range of the object that has been sterilized. The equalized range can be visually recognized.

Note that the information stored in the storage unit 22 in the storage process of step S211 includes terminal information for specifying the mobile terminal 20 and worker ID for specifying the worker, as in the first embodiment. etc., may be transmitted to the server 2 via a predetermined network N. As a result, in the present embodiment as well, not only can the server 2 manage work histories and the like regarding objects that have been sterilized using the mobile terminal 20, but also information attached to the objects using another mobile terminal 20 can be managed. By imaging the code, it is possible to inquire of the server 2 whether the object has already been sterilized or the like. In addition, even if the work such as sterilization is finished in the middle, the server 2 manages the history of the work in the middle, so it is possible to inquire of the server 2 whether or not the work such as sterilization is in the middle. can.

It should be noted that the characteristic configuration of the present embodiment, in which the range in which sterilization or the like is completed is displayed on the screen, can also be applied to other embodiments.

[Third embodiment]
Next, a sterilization/virus inactivation system according to a third embodiment of the present invention will be described.
The third embodiment is mainly different from the first embodiment in that each information code attached to the object is generated invisibly. Therefore, the same reference numerals are assigned to substantially the same components as in the first embodiment, and the description thereof will be omitted.

In this embodiment, each information code attached to the object is ink that transmits visible light and reflects the invisible light. produced by ultraviolet light-emitting ink or the like that emits light when irradiated with The information code may be generated only by using the above-mentioned ultraviolet light-emitting ink or the like in at least one of the dark-colored cells and the bright-colored cells, depending on the position where the information code is attached.

Since the information code is generated in this way, humans cannot visually recognize the information code attached to the object. Therefore, even if a large number of information codes are attached to the object, it is possible to maintain the design of the object. For example, even if the present sterilization/virus inactivation system 1 is adopted in public facilities or the like, it is possible to prevent the facilities from deteriorating in value due to impairing the design.

The characteristic configuration of this embodiment, in which each information code attached to an object is generated invisibly, can also be applied to other embodiments.

[Fourth embodiment]
Next, a sterilization/virus inactivation system according to a fourth embodiment of the present invention will be described with reference to the drawings.
The fourth embodiment is mainly different from the second embodiment in that the effectiveness of sterilization/virus inactivation is specified. Therefore, the same reference numerals are assigned to substantially the same components as in the second embodiment, and description thereof will be omitted.

In this embodiment, the surface of the object to be irradiated with the invisible light (the surface to be sterilized etc.) is divided into a plurality of irradiation areas, and the degree of effectiveness of sterilization and virus inactivation (hereinafter simply referred to as , the degree of effectiveness) is calculated, and information about the calculated degree of effectiveness is displayed on the display unit 25 on the screen. As a result, the effectiveness of sterilization and virus inactivation, which is the so-called sterilization strength, can be recognized for each irradiation area.

In the effect level calculation process performed by the control unit 21 of the present embodiment to calculate the effect level, the smaller the distance from the irradiation area to the mobile terminal 20 (hereinafter, also referred to as the irradiation distance), the smaller the irradiation area. is calculated for each irradiation area so that the degree of effectiveness of is high. Further, in the effect level calculation process, the effect level is calculated such that the longer the irradiation time of the invisible light is, the higher the effect level is. Note that the control unit 21 that performs the distance measurement process for measuring the irradiation distance corresponds to an example of a "distance measurement unit", and the control unit 21 that performs the effect degree calculation process is an "effect degree calculation unit". It can correspond to an example.

Therefore, in the distance measurement process performed by the control unit 21 of the present embodiment, the imaged image in units of frame rate imaged by the imaging unit 24 is used as the irradiation area, and the irradiation distance is calculated from the imaged image. Since each information code attached to the object has a specified size, the irradiation distance can be calculated based on the size of the area occupied by the information code in the captured image. By calculating the irradiation distance in this way, in the effect degree calculation process, when the reading port is moved slowly with respect to the object, the irradiation time is shorter than when the reading port is moved quickly. is longer, the effect is calculated to be higher.

In the management process for sterilization, etc., the information regarding the degree of effectiveness obtained by the degree-of-effectiveness calculation processing described above can be displayed on the second display area 25b of the display unit 25 along with the sterilized range. For example, as illustrated in FIG. 6, in the second display area 25b, a map (for example, a grayscale color map) whose color becomes darker as the degree of effectiveness increases is aligned with the sterilized range. can be superimposed on the screen. As a result, it is possible not only to visually recognize the effectiveness of sterilization and virus inactivation, which is the so-called sterilization strength, but also to easily grasp the areas where the effectiveness is low on the surface of the object to be sterilized. can. For this reason, in the sterilization management process, for example, when the degree of effectiveness on all surfaces of the object to be sterilized exceeds a predetermined threshold, the sterilization management process is terminated. can be Note that the map may be generated based on a screen covered with a color (for example, purple) that easily reminds of a virus, so that the color becomes lighter as the degree of effectiveness increases. When the map is generated in this way, it is possible to make the worker or the like visually recognize that the virus is reduced as the color becomes lighter.

Note that the distance measurement process performed by the control unit 21 is not limited to calculating the irradiation distance based on the size of the area occupied by the information code in the captured image. Assuming that the distance is constant, the irradiation distance may be calculated based on the distance between the information codes in the captured image. In such a configuration, for example, at least a part of each information code is placed on a predetermined pasting material (for example, a sheet on which a plurality of information codes are printed) to be pasted on the object at regular intervals. Can be generated to be placed. For example, as illustrated in FIG. 7 as a first modification of the present embodiment, when adding information codes C7 and C8 to the information codes C1 to C6 described above and pasting them on the desk surface 11, the information codes C6 to C8 They can be arranged at regular intervals on one sheet 12 . As a result, since the distance between each information code on the predetermined pasting material can be grasped, the irradiation distance can be measured based on the distance between each information code. It is possible to increase the accuracy of calculation of the degree of effectiveness by the degree of effectiveness calculation processing.

In order to improve the calculation accuracy of the irradiation distance, a large number of the same information codes in which the same information is recorded may be arranged on the sheet. For example, as illustrated in FIG. 8 as a second modification of the present embodiment, a large number of information codes C9 smaller than the other information codes C1 to C5 are arranged using the sheet 13 instead of the information code C6. You may do so. It is sufficient to read at least one of the information codes C9, and if the information code is large, it may not be possible to read it if the portable terminal 20 is brought too close, and a wide imaging range is required to read two information codes. This is because Also, when the reflectance of an object increases, it becomes difficult to read a large information code when the distance to the object is short, and when the distance to the object is long, the degree of effectiveness is reduced. . When a large number of small information codes are captured, the number of elements for calculating the irradiation distance increases, so the calculation accuracy can be improved. For example, since each information code is arranged at regular intervals, the size of the imaging range can be calculated only by obtaining the number of characteristic patterns (FP pattern in the case of QR code) of the information code to be imaged. can. Therefore, at least some of the information codes C1 to C5 may be generated by arranging a large number of information codes in which the same information is recorded on the sheet, similarly to the information code C9 described above. In a configuration in which a large number of information codes each recording the same information are arranged on a sheet, other easily identifiable patterns such as dot patterns may be arranged at predetermined intervals along each information code.

Further, in the present embodiment, a predetermined notification may be given to the operator according to the relationship between the distance measured by the distance measurement process and the predetermined distance range. Specifically, for example, when the distance to the irradiation area is too far to produce an effective degree of effectiveness, a screen display or the like is performed on the display unit 25 so as to bring the portable terminal 20 closer to the object to notify. can be done. Further, when the distance to the irradiation area is unnecessarily close, the display unit 25 can display a screen to move the portable terminal 20 away from the object. By having the worker perform the work using the portable terminal 20 in response to this notification, it is possible to increase the effectiveness of sterilization and virus inactivation according to the predetermined distance range. Note that the display unit 25 can correspond to an example of a "notification unit" that performs predetermined notification as described above. Further, the configuration of performing a predetermined notification according to the relationship between the distance measured by the distance measurement process and the predetermined distance range can also be applied to embodiments in which the degree of effectiveness is not calculated.

Further, in the effect level calculation process, an angle calculation process is performed to calculate an acute angle formed by the irradiation region and the irradiation direction of the invisible light, and the effect level is calculated by further considering the calculation result of this angle calculation process. You may The acute angle formed by the irradiation region and the irradiation direction of the invisible light can be obtained, for example, according to the shape of the information code occupying the captured image. Even if the distance to the irradiation area is the same, as the acute angle formed by the irradiation area and the irradiation direction of the invisible light approaches 90°, the effectiveness of sterilization and virus inactivation increases. By considering the calculated angle, it is possible to increase the accuracy of calculation of the degree of effectiveness by the degree of effectiveness calculation processing. Note that the control unit 21 that performs the angle calculation process can correspond to an example of an "angle calculation unit".

When the acute angle calculated by the angle calculation process is less than the predetermined angle, the display unit 25 prompts the user to move the mobile terminal 20 so that the angle calculated by the angle calculation process becomes equal to or greater than the predetermined angle. It may be notified by displaying on the screen or the like. When the worker performs work using the mobile terminal 20 in response to this notification, the target is effectively irradiated with invisible light, so that the effectiveness of sterilization and virus inactivation can be enhanced. can. Note that the display unit 25 can correspond to an example of a “notification unit” that performs notification as described above. Further, the configuration of issuing a notification prompting the user to move the mobile terminal 20 so that the angle calculated by the angle calculation process is greater than or equal to the predetermined angle can be applied to embodiments in which the degree of effectiveness is not calculated.

Further, in the effect level calculation process, the effect level may be calculated for each irradiation area in consideration of the material of the object. For example, even with the same irradiation dose, a material with relatively high hygroscopicity may be less effective in sterilization and virus inactivation than a material with relatively low hygroscopicity. For this reason, if the material has a low degree of effectiveness, the coefficient used for calculating the degree of effectiveness is set to be smaller than 1. Conversely, if the material has a high degree of effectiveness, such as an antibacterial material, the effect It can be corrected by increasing the coefficient used to calculate the degree. When the information about this coefficient is included in the sterilization information or when it is acquired in advance by the mobile terminal 20, the material of the target object is taken into consideration to increase the accuracy of calculation of the degree of effectiveness by the degree of effectiveness calculation process. be able to.

As a specific example of the material of the object, the degree of effectiveness may be calculated in consideration of the reflectance of the irradiation surface irradiated with the invisible light. For example, even with the same irradiation dose, a material with a relatively high reflectance may be less effective in sterilization and virus inactivation than a material with a relatively low reflectance. When the information on this reflectance is included in the sterilization information or is acquired in advance by the mobile terminal 20, the reflectance of the irradiated surface is taken into consideration, and the accuracy of calculation of the effect by the effect calculation process can increase The reflectance may be obtained by the portable terminal 20 itself by providing a sensor or the like capable of measuring the reflection intensity of the invisible light reflected by the object, or the operator may operate the operation unit 26. You can also manually enter the

It should be noted that the characteristic configuration of the present embodiment and modifications, such as clearly indicating the degree of effectiveness of sterilization and virus inactivation, can also be applied to other embodiments.

[Fifth embodiment]
Next, a sterilization/virus inactivation system according to a fifth embodiment of the present invention will be described with reference to the drawings.
The fifth embodiment is mainly different from the second embodiment in that the direction in which the mobile terminal 20 is to be moved is instructed during work such as sterilization. Therefore, the same reference numerals are assigned to substantially the same components as in the second embodiment, and description thereof will be omitted.

In this embodiment, in order to smoothly carry out work such as sterilization, when any information code attached to the object is read, the direction in which the portable terminal 20 is moved to read the next information code is displayed. It is instructed by being displayed on the unit 25 .

For this reason, each information code attached to the same object has information about other information codes, specifically, information about the relative position of the information code to be read next (hereinafter also referred to as relative position information). generated to be included in the usage information.

Then, in the sterilization management process performed by the control unit 21, as in the flowchart shown in FIG. 9, when the information code in which the sterilization information is recorded is successfully decoded (Yes in S207 of FIG. A pointing direction calculation process shown in FIG. In this process, the portable terminal 20 is moved to read the next information code based on the relative position information included in the read sterilization information and the position in the captured image occupied by the successfully decoded information code. A direction (hereinafter also simply referred to as a pointing direction) is calculated.

Subsequently, the movement direction instruction processing shown in step S219 is performed, and the calculated instruction direction is displayed on the screen of the display unit 25 as the direction in which the mobile terminal 20 should be moved to read the next information code. be. Specifically, for example, as illustrated in FIG. 10, an arrow F indicating the direction of indication is displayed on the screen in the first display area 25a to indicate the direction. Note that the control unit 21 and the display unit 25 that perform the pointing direction calculation process and the movement direction instruction process described above can correspond to an example of a "moving direction instruction part."

As described above, in the management process for sterilization or the like in the present embodiment, the instruction direction is instructed by the screen display by the movement direction instruction process. As a result, the worker can easily read each information code attached to the same object by moving the portable terminal 20 as instructed by the movement direction instruction processing, and can smoothly perform operations such as sterilization. can be done.

Note that the relative position information described above is not limited to being included in the sterilization information of the information code, and may be generated by the mobile terminal 20 itself. Specifically, for example, the operator separates the mobile terminal 20 from the object to some extent and captures all the information codes attached to the object in one image. The above relative position information can be generated for each information code based on each range occupied by .

It should be noted that the characteristic configuration of this embodiment, in which the direction in which to move the mobile terminal 20 is instructed during work such as sterilization, can also be applied to other embodiments.

The present invention is not limited to the above-described embodiments and the like, and may be embodied as follows, for example.
(1) The object to be sterilized or the like is not limited to the desk surface 11 of the desk 10, but may be a surface of an object requiring sterilization/virus inactivation such as a partition plate or a chair. The surface of the object requiring this sterilization/virus inactivation may be flat, or at least a portion thereof may be curved or uneven.

(2) The information code attached to the object such as the desk surface 11 is not limited to being generated as a QR code having an error correction function, but is generated as a two-dimensional code such as a data matrix code or maxi code. Alternatively, it may be generated as a one-dimensional code such as a bar code.

(3) The irradiation distance from the irradiation area to the mobile terminal 20 is not limited to being measured according to the size, interval, etc. of the information code occupying the captured image. For example, a sensor capable of measuring the distance to the irradiation area may be measured according to the detection result of the sensor on the premise that the mobile terminal 20 is equipped with the .

DESCRIPTION OF SYMBOLS 1... Sterilization and virus inactivation system 2... Server 10... Desk (object)
11 ... Desk surface (object)
21 ... control section (irradiation range specifying section, image connecting section, distance measuring section, effect degree calculating section, angle calculating section)
22... Storage unit 23... Irradiation unit 24... Imaging unit (specification unit, acquisition unit, number acquisition unit)
25 ... Display unit (notification unit)
25a... First display area 25b... Second display area C1 to C6... Information code

Claims (14)

A sterilization/virus inactivation system that irradiates an object to be sterilized or virus inactivated with invisible light having a wavelength capable of sterilization or virus inactivation from a mobile terminal,
A plurality of information codes recording predetermined information on the surface to be irradiated with the invisible light are dispersedly attached to the object,
The mobile terminal is
an irradiating unit capable of irradiating the invisible light;
an imaging unit arranged so that at least a part of the imaging range matches the irradiation range of the irradiation unit;
an irradiation range identifying unit that identifies the imaging range when the information code is imaged by the imaging unit as an irradiation range irradiated with the invisible light;
a storage unit that stores information about the irradiation range specified by the irradiation range specifying unit;
A sterilization/virus inactivation system comprising: 2. The sterilization/virus inactivation system according to claim 1, further comprising a server that acquires and manages information about the irradiation range specified by the irradiation range specifying unit from the portable terminal. The irradiation range specifying unit
an image linking unit that links captured images in which the information code is captured by the imaging unit based on the information code;
a display unit displaying the connected image connected by the image connecting unit as an irradiation range irradiated with the invisible light;
The sterilization/virus inactivation system according to claim 1 or 2, characterized by comprising: The sterilization/virus deactivation system according to any one of claims 1 to 3, wherein the information code is generated so as to be reflected when the invisible light is irradiated. The mobile terminal is
a distance measuring unit capable of measuring a distance from the mobile terminal for each irradiation area obtained by dividing the surface to be irradiated with the invisible light into a plurality of areas;
an effectiveness calculation unit that calculates so that the effectiveness of sterilization and virus inactivation in units of the irradiation area increases as the distance measured by the distance measurement unit decreases;
The sterilization/virus inactivation system according to any one of claims 1 to 4, characterized by comprising: 6. The sterilization according to claim 5, wherein at least some of the plurality of information codes are generated so as to be arranged at prescribed intervals on a predetermined pasting material to be pasted onto the object. • Virus inactivation system. 7. The sterilization/virus inactivation system according to claim 5 or 6, further comprising a notification unit that performs predetermined notification according to the relationship between the distance measured by the distance measurement unit and a predetermined distance range. . The mobile terminal is
An angle calculation unit that calculates an acute angle formed by the irradiation region and the irradiation direction of the invisible light,
8. The degree-of-effect calculation unit according to any one of claims 5 to 7, wherein the degree-of-effect calculation unit calculates the degree of effect for each irradiation area, further considering the angle calculated by the angle calculation unit. sterilization and virus inactivation system. The sterilization/virus according to any one of claims 5 to 8, wherein the effectiveness calculation unit further calculates the effectiveness in consideration of the irradiation time of the invisible light. Inactivation system. 10. The sterilization / according to any one of claims 5 to 9, wherein the effect degree calculation unit further calculates the effect degree in units of the irradiation area in consideration of the material of the object. Virus inactivation system. The mobile terminal is
an angle calculation unit that calculates an acute angle formed by the irradiation region and the irradiation direction of the invisible light;
a notification unit that, when the angle calculated by the angle calculation unit becomes less than a predetermined angle, prompts the user to move the mobile terminal so that the angle calculated by the angle calculation unit becomes equal to or greater than the predetermined angle;
The sterilization/virus inactivation system according to any one of claims 1 to 10, comprising: The mobile terminal is
A reading unit that reads the predetermined information from the information code imaged by the imaging unit,
2. The storage unit stores the predetermined information read by the reading unit in association with the irradiation range specified from the imaging range in which the information code is imaged. 12. The sterilization/virus inactivation system according to any one of -11. The predetermined information includes information about other information codes attached to the same object,
The mobile terminal is
A movement direction instruction unit for instructing a direction in which the portable terminal is moved to read the next information code based on the predetermined information read from the information code by the reading unit. Item 13. The sterilization/virus inactivation system according to item 12. The sterilization/virus inactivation system according to any one of claims 1 to 13, wherein the invisible light is light with a wavelength of 250 nm or less.

Images