JP6636272B2 - Reading system - Google Patents

Description

The present invention relates to read collection system.

2. Description of the Related Art In recent years, a technology for performing inventory management of products using an RF (Radio Frequency) tag has been known.
Generally, when an RF tag is used, information on the RF tag attached to a product is read without contact by an RF reader / writer.

  Here, Patent Literature 1 discloses a technique in which an RF reader is attached to a trash can together with an antenna and information is read from an RF tag attached to the article in order to improve the traceability of the discarded article.

JP 2006-248778 A

  However, the technique of Patent Document 1 merely attaches an RF reader to the inner wall of a trash can, and does not specifically disclose the shape, installation position, and installation mode of the antenna.

  For this reason, in the technique of Patent Literature 1, there is a risk of erroneous reading (for example, reading of an unintended RF tag due to a flight distance of a radio wave, or reading error of an RF tag due to an installation position). . That is, in the technique of Patent Document 1, there is a problem that the reading accuracy is poor when the waste discarded in the trash can is managed using the RF tag.

This problem is a fatal problem for the disposal of medical products from the viewpoint of prevention of infectious diseases and for hospitals that manage shortages of expensive medical products that are charged after use.
Therefore, for practical use, it is desired to improve the reading accuracy of an RF tag attached to waste (for example, medical products) discarded in a trash can.

Therefore, the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a reading system that improves the reading accuracy when the waste put into a trash can is managed using an RF tag. And

Reading system according to the present onset Akira,
A first radiator that emits a radio wave in opposition to one of the four side surfaces of the trash can including a waste input port, four side surfaces surrounding the input port, and a bottom surface connected to the four side surfaces; A first antenna having a surface;
An antenna including a second antenna having a second radiation surface that radiates radio waves facing a side surface orthogonal to the one side surface among the four side surfaces of the trash can;
A reader / writer that alternately emits radio waves to the first antenna and the second antenna,
The reader / writer,
A determining unit that determines whether information read from the read medium based on radio waves emitted by the first and second radiation surfaces is stored,
A notification unit that notifies that the waste to which the medium to be read has been used is used when the determination unit determines that the read medium is not stored.

Also, the determining unit, when the value of the received signal strength at the time of reading information from the the medium to be read is a predetermined value or more, the read information may determine whether the stored or.
Further, the notification unit may perform a notification prompting an order for the waste, in addition to the notification that the waste has been used.
Further, the waste may be a medical product.

  ADVANTAGE OF THE INVENTION According to this invention, the reading accuracy at the time of managing the waste put into a garbage bin using an RF tag can be improved.

It is a figure for explaining composition of an antenna concerning an embodiment of the present invention, (A) is a top view and (B) is a sectional view of the AA line. It is a figure which shows an example of arrangement | positioning relationship between a trash can and an antenna, (A) is a top view and (B) is a front view. It is a figure showing an example of reading by a flat antenna. FIG. 2 is a block diagram illustrating a configuration of a reading system. It is a figure which shows the RF tag affixed on the package of medical goods. FIG. 6 is a flowchart illustrating a flow of a reading process. It is a front view which shows another example of arrangement | positioning relationship between a trash can and an antenna. It is a perspective view which shows an example of arrangement | positioning relationship between a trash can and a blade-shaped antenna. It is a figure showing the example of reading by a blade antenna.

  Hereinafter, an antenna according to an embodiment of the present invention will be described with reference to FIGS. 1 (A) and 1 (B).

As shown in FIG. 1A, the antenna 20 is a flat plate antenna in which the propagation direction of a radio wave is circularly polarized. The term “flat” means that the appearance is a board shape and the thickness is sufficiently smaller than the wavelength of the frequency band to be used. It should be noted that this flat shape is merely an external feature and does not indicate the shape of the internal antenna pattern (in this embodiment, as an example, a spiral type), just in case.
The antenna 20 includes through-holes (22a to 22d) at four corners, a connector 25 for connecting to a coaxial cable 30 for feeding, and a conductor wire 21 whose antenna pattern shown by a broken line in FIG. The conductor wire 21 includes a power supply point 21a serving as a power supply start point and a terminating resistor 21b for impedance adjustment.

  FIG. 1B is a cross-sectional view taken along line AA. The antenna 20 has a three-layer structure including a conductor wire 21, a dielectric 23, and a conductor foil 22, and is casing by a plastic housing 24. The conductor wire 21 and the conductor foil 22 can be formed of a metal such as aluminum, copper, silver, and nickel. In this embodiment, as an example, the conductor wire 21 and the conductor foil 22 are formed of copper.

On the other hand, the dielectric 23 can be formed of foamed polyolefin, polyester, polyamide, aromatic polyamide, glass epoxy, air layer, or the like. In this embodiment, as an example, the dielectric 23 is formed of glass epoxy.
The conductor 31 is a power supply line wired between the connector 25 and the power supply point 21a. The conductor 31 is covered with an insulator, and the insulator comes into contact with the conductor foil 22. Therefore, the conductor foil 22 is grounded, and the terminating resistor 21b is connected to the conductor foil 22 and grounded as shown in the figure.

  The antenna 20 includes a radiation surface (principal surface) 26 for radiating radio waves, and an opposing surface 27 facing the radiation surface 26. The through holes (22a to 22d) at the four corners are holes penetrating the radiation surface 26 and the opposing surface 27, and are used when the antenna 20 is attached to a support 60 described later.

  The gain of the antenna 20 is determined by the width of the spiral conductor 21, the thickness of the dielectric 23, and the dielectric constant of the dielectric 23. The flight distance of the radio wave is controlled by optimizing this gain and adjusting the transmission power at the time of radio wave transmission. Thereby, the radio wave can be emitted only to the vicinity of the radiation surface 26 of the antenna 20, and the RF tag (read medium) near the antenna 20 can be read.

  Note that, because of the circular polarization, the information of the RF tag can be read as long as the read surface of the RF tag is not completely perpendicular to the radiation surface 26. That is, as long as the read surface and the radiation surface 26 face each other (there is no need to face completely parallel), information can be read regardless of the angle of the read surface. The term “facing” is not limited to the case where the surfaces face in parallel, but also includes the case where the surfaces face non-parallel. That is, the surfaces are opposed to each other unless the other surface is completely perpendicular to one surface.

  Here, the dimensions of the antenna 20 are arbitrary, but in this embodiment, a substantially square flat antenna having a width in the x direction of 16.5 cm, a depth in the y direction of 15.5 cm, and a thickness in the z direction of 0.85 cm is used. An example will be described. Hereinafter, a case in which the antenna 20 of this size is applied to the disposal management of waste (especially, medical products discarded after use) put into a trash can will be described with reference to FIG. In the following, the description will be made on the assumption that the antenna 20 is a general concept including a plurality of flat antennas, and the frequency of the radio wave is set to a UHF (Ultra High Frequency) band (particularly, 865 to 930 MHz).

  FIG. 2 shows an arrangement relationship between the trash can 50 and the antenna 20 (the first flat antenna 20a and the second flat antenna 20b). FIG. 2A is a plan view, and FIG. 2B is a front view.

  As shown in FIG. 2A, the trash can 50 is surrounded on two sides by a first flat antenna 20a and a second flat antenna 20b which are attached to a U-shaped support body 60 and whose positions are fixed. It is installed in the state where it was set. The structure of the first and second planar antennas 20a and 20b is the same as the structure of the antenna 20 of FIG. 1, and therefore, will be described using the same reference numerals as in FIG. For example, the description will be made using the reference numerals 26a and 26b for the radiation surfaces of the first and second planar antennas 20a and 20b. That is, the first planar antenna 20a has a radiation surface 26a (first radiation surface), and the second planar antenna 20b has a radiation surface 26b (second radiation surface).

  The trash box 50 includes a medical waste input port 51, four side surfaces 50a to 50d surrounding the input port 51, and a bottom surface 52 (see FIG. 2B) connected to the four side surfaces 50a to 50d. It is a square tube shape formed of a material other than metal. The dimensions of the trash can 50 are, for example, 40 cm in width in the x direction, 30 cm in depth in the y direction, and 55 cm in height in the z direction.

  The support 60 fixes the position of the antenna 20 so that the side surface (any one of the four side surfaces 50a to 50d) of the trash can 50 and the radiation surface 26 of the antenna 20 face in parallel with a gap. It is a fixing member. In this embodiment, as shown in the figure, the position of the first flat antenna 20a is fixed by the support 60 so that the radiation surface 26a faces one of the four sides 50a to 50d of the trash can 50. Is done. On the other hand, the position of the second planar antenna 20b is fixed by the support 60 so that the radiation surface 26b faces the side surface 50b orthogonal to the one side surface 50c.

  More specifically, the first flat antenna 20a is positioned by the support 60 such that the radiation surface 26a faces substantially the center of the side forming one side of the input port 51 among the four sides of the one side surface 50c. Is fixed. Similarly, the second plate-shaped antenna 20b supports the supporting member such that the radiation surface 26b faces substantially the center of the side forming the other side of the input port 51 among the four sides of the side surface 50b orthogonal to the one side surface 50c. The position is fixed by 60. As shown in FIG. 2A, the antenna 20 (the first and second flat antennas 20 a and 20 b) faces the substantially center of the side surface (two side surfaces 50 c and 50 b) of the trash can 50 because of radiation. This is to eliminate the unevenness of the radio wave.

  Each of the first flat antenna 20a and the second flat antenna 20b is attached to the support body 60 by a joining member B (for example, a binding band) inserted into each of the four corner through holes 22a to 22d. As a result, the position of the antenna is fixed, and the respective radiating surfaces 26a and 26b face the two side surfaces 50c and 50b of the four side surfaces. Radiate.

  As shown in FIG. 2B, both the first and second flat antennas 20a and 20b protrude upward from the input port 51 of the trash can 50 in a front view. This is to make it easier to read the RF tag at the moment when the waste is discarded, and to prevent erroneous reading of the RF tag of another waste accumulated below the trash box 50.

Further, the radiation surfaces 26a, 26b of the first and second planar antennas 20a, 20b both face substantially the center of two sides forming the input port 51. For this reason, in addition to the radio waves radiated from the respective radiation surfaces 26a and 26b being spread all over the input port 51 of the trash can 50, one of the radiation surfaces and the surface to be read of the RF tag are perpendicular. Also, the information of the RF tab can be read on the other radiation surface.
For example, as shown in FIG. 3, even if the radiation surface 26b of the second planar antenna 20b is perpendicular to the read surface of the RF tag 71, the radiation surface 26a of the first planar antenna 26a and the RF tag Since it faces the read surface of the RF tag 71, the information of the RF tag 71 can be read. The RF tag 71 is attached to a medical product package (outer box) 70. This medical product is a medical product to be managed by the RF tag 71 and is, for example, a high-priced medical product.

  Now, returning to FIG. 2, the first and second planar antennas 20a and 20b are connected to the reader / writer 10 by coaxial cables 30a and 30b, respectively. The reader / writer 10 controls the transmission timing of radio waves, and reads or processes the read information as it is (for example, after a predetermined process) and is connected to a higher-level PC (Personal PC) connected by a LAN (Local Area Network) cable 11. Computer).

  Here, the configuration of the reader / writer 10 will be described with reference to FIG. The reader / writer 10 forms a reading system 100 together with the antenna 20. That is, the reading system 100 includes the reader / writer 10 and the antenna 20 (in this embodiment, the first flat antenna 20a and the second flat antenna 20b).

The reader / writer 10 includes a control unit 12, a communication interface 13, a storage unit 14, and an operation unit 15.
The control unit 12 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The control unit 12 controls various functions of the reader / writer 10 by executing software processing according to a program stored in the ROM (for example, a program for executing a reading process described later).

The communication interface 13 includes an antenna port for connecting to the antenna 20 and a LAN port for connecting to a PC. As shown in the figure, in this embodiment, coaxial cables 30a and 30b connected to the first and second planar antennas 20a and 20b are connected to two-terminal antenna ports, respectively.
The storage unit 14 is configured by a non-volatile memory, and stores information read from the RF tag and the like.
The operation unit 15 includes a power switch of the reader / writer 10 and a reset button for initializing settings.

Now, the function of the control unit 12 will be described. The control unit 12 includes a determination unit 121 and a notification unit 122 as functions.
The determination unit 121 determines whether the information read from the RF tag based on the radio wave radiated from the radiation surface 26a of the first planar antenna 20a and the radiation surface 26b of the second planar antenna 20b is stored in the storage unit 14. Determine whether or not.
When the determination unit 121 determines that the medical product to which the RF tag has been attached has been used, the notification unit 122 notifies the host PC that it has been used.

Here, the RF tag 71 is attached to a medical product package (outer box) 70 as shown in FIG. When the package 70 is discarded in the trash box 50, the reading system 100 reads the RF tag 71 attached to the package 70. Hereinafter, the flow of the reading process will be described with reference to FIG. 6 while appropriately taking the case where the package 70 is discarded in the trash box 50 as an example.
The control unit 12 of the reader / writer 10 controls, for example, the transmission interval of radio waves to be 0.2 seconds and the transmission power to be 23 dBm. Further, the description will be given on the assumption that the RF tag 71 is a passive tag, that is, a tag having no built-in power supply (a tag that cannot communicate unless power is supplied from outside). This reading process is started when the user issues a radio wave transmission start instruction to the reader / writer 10. This instruction is made, for example, manually via the driver software of the reader / writer 10 installed in the PC or via the operation unit 15.

  First, the determination unit 121 determines whether information has been read from an RF tag (step S11). When determining that the information is not read (Step S11; No), the determination unit 121 waits until information is read from the RF tag (No loop of Step S11). That is, the process waits until the package 70 is discarded.

  Here, it is assumed that a hospital nurse removes a medical product from the package 70 and then discards the package 70 in the trash box 50. Then, the determining unit 121 determines that the information has been read from the RF tag (Step S11; Yes).

In this reading, (i) the radiation surface 26a of the first planar antenna 20a and the radiation surface 26b of the second planar antenna 20b radiate radio waves to the near field at intervals of 0.2 seconds, and (ii) the trash can. The RF tag 71 thrown away by 50 receives the radio wave, obtains an electromotive force by a built-in rectifier circuit, and transmits information to be stored to the antenna 20 (first and second flat antennas 20a and 20b). (Iii) At least one of the first planar antenna 20a and the second planar antenna 20b receives the transmitted information.
In addition, in the above (iii), when both antennas receive information and the same information is read twice, the determination unit 121 may acquire either one of the information.

  Now, returning to FIG. 6, after reading the information from the RF tag (Step S11; Yes), the determination unit 121 determines whether the read information overlaps (Step S12). Specifically, the determination unit 121 determines whether the read information has been stored in the storage unit 14. For example, if the read information is an ID for identifying a waste, the determination unit 121 may determine whether the ID has already been stored.

  Here, when the read information does not overlap (Step S12; No), the notification unit 122 notifies that the waste (in this embodiment, the discarded medical product) has been used (Step S13). Specifically, when the determination unit 121 determines that the medical product has not been stored, the notification unit 122 notifies the PC that the medical product packed in the package 70 to which the RF tag 71 is attached has been used. Then, the process returns to the reading process.

On the other hand, when the read information is duplicated (Step S12; Yes), the notification process is skipped and the process returns to the reading process. As described above, each time information is read from the RF tag while the antenna 20 (the first and second planar antennas 20a and 20b) emits a radio wave, depending on whether or not the read information has already been read. Then, the reading process of notifying / notifying the PC is repeatedly executed.
Since information that has already been read (that is, information that has been determined to be used) is excluded, even if information is read from another waste RF tag that has accumulated below the trash can 50, that waste is re-used. There is no notification that it has been used. For this reason, it is possible to accurately count only the once-discarded waste (in this embodiment, a once-used medical product) and notify the PC.

  As described above, according to the antenna 20 (the first flat antenna 20a and the second flat antenna 20b) in this embodiment, the radiation surfaces 26a and 26b are formed by the support 60 so that two of the four side surfaces 50a to 50d of the trash can 50 are provided. Radio waves are radiated while facing the side surfaces 50b and 50c. In other words, the antenna 20 according to this embodiment includes a first flat antenna 20a having a radiation surface 26a (first radiation surface) that radiates radio waves while facing one side surface 50c of the trash can 50, and one side surface. A second flat antenna 20b having a radiation surface 26b (second radiation surface) that emits radio waves facing a side surface 50b orthogonal to 50c.

  Since the flat antennas 20a and 20b are circularly polarized waves, the reading accuracy of the RF tag is structurally high, and the two radiating surfaces 26a and 26b (first and second radiating surfaces) cover two sides of the trash can. Since the radio waves are radiated in this way, the reading accuracy can be further improved. Therefore, the RF tag put into the trash can 50 can be reliably read as compared with the above-described Patent Document 1.

  Note that, in the above-described embodiment, the case where the first planar antenna 20a and the second planar antenna 20b are used has been described as an example, but the present invention is not limited to this. For example, reading of the RF tag may be performed using only one of the flat antennas. Since the information can be read as long as the read surface of the RF tag is not completely perpendicular to the radiation surface, the information can be read with sufficient accuracy while suppressing the cost.

  Further, the flow of the reading process is not limited to that shown in FIG. For example, when the value of the received signal strength (RSSI: Received Signal Strength Indicator) when reading information from the RF tag is equal to or more than a predetermined value (that is, when the RF tag is close to the antenna 20), the determination unit 121 It may be determined whether the read information has been stored. In this case, a step of determining whether or not the value of the received signal strength is equal to or greater than a predetermined value may be added between steps S11 and S12.

  Since the distance between the RF tag and the antenna 20 can be estimated from the received signal strength (RSSI), an RF tag which is not clearly inserted into the input port 51 of the trash can 50 is excluded. Thereby, the information of the RF tag can be read more accurately. At the time of estimation, the reader / writer 10 may previously store an estimation table (a table in which RSSI and distance are associated) in the storage unit 14 and estimate the distance based on the estimation table.

In addition to the notification that the medical product has been used, the notification unit 122 outputs a notification (for example, a pop-up message indicating that a missing item has occurred) to the PC to prompt ordering of the medical product. Good. This enables a nurse who looks at the PC, a person in charge of information processing at a hospital, and the like to perform disposal management of used medical waste, and also facilitates order processing for a missing item.
Of course, in addition to the notification that the medical product has been used, a process of automatically placing an order may be performed.

  Further, the present invention is not limited to the above embodiment, and various modifications and applications are possible.

(Modification 1)
In the above-described embodiment, an example has been described in which the fixing member is the support 60, but the present invention is not limited to this. For example, a U-shaped engaging member 80 shown in FIG. 7 may be used as a fixing member instead of the support 60. In short, the fixing member may have any shape and form as long as it fixes the position of the antenna 20 so that the side surface of the trash can 50 and the radiation surface 26 face each other.
The engaging member 80 in FIG. 7 is provided on the side surface of the trash can 50 and the opposing surface 27 of the antenna 20 (the opposing surface 27a of the first flat antenna 20a and the opposing surface 27b of the second flat antenna 20b). It is composed of related mechanical members. Hereinafter, a description will be given of the first planar antenna 20a as a representative.

The first flat antenna 20a has an engaged portion 81 in a space indicated by a broken line for engaging with the engaging member 80 at a predetermined position on the facing surface 27a. When the engaged portion 81 functions as a mounting portion, the engaged portion 81 is attached to (engaged with) the engaging member 80, and the first surface in a state where the radiation surface 26 a faces the side surface of the trash can 50. The position of the flat antenna 20a is fixed.
As described above, according to the engagement member 80 of the first modification, the support body 60 does not need to be installed, and the user's installation burden on the antenna 20 can be reduced.
Although both the support 60 and the engaging member 80 are fixed in position so that a gap is formed between the radiation surface 26 of the antenna 20 and the side surface of the trash can 50, the position may be fixed by contacting the side surface. Of course.

(Modification 2)
In the above-described embodiment, the description has been given on the assumption that the antenna 20 is a flat antenna, but the present invention is not limited to this. For example, a blade-shaped antenna may be used as shown in FIG.
The blade-shaped antenna 90 (90a to 90c) is an elongated rectangular antenna in which the propagation direction of a radio wave is linearly polarized. Although the internal structure is not described in detail, the antenna pattern is formed of a rectangular metal plate, and one end of the rectangle is a feeding point and the other end is a terminating resistor. Coaxial cables 31 (31a to 31c) are connected to the feeding points via connectors as shown in the figure.

Here, since the blade-shaped antenna 90 is linearly polarized, even when the radiation surface is opposed to the read surface of the RF tag, the facing read surface is perpendicular to the radiation surface. , The reading accuracy decreases.
For example, assume that the RF tag 73 is discarded in the direction of the arrow in FIG. The reading surface of the RF tag 73 and the radiation surface of the blade-shaped antenna 90a are opposed but perpendicular to each other, so that the reading accuracy is reduced. Further, since the radiation surface of the blade-shaped antenna 90c and the surface to be read of the RF tab 73 do not face each other and are vertical, the reading accuracy decreases.

  Therefore, as shown in FIG. 9, three blade-shaped antennas 90 (first to third blade-shaped antennas 90a to 90c) are installed at the positions shown in the figure so that the RF tag can be read in any direction. Like that. That is, among the four end points 51a to 51d of the input port 51, along the side in the width direction (x direction), the side in the height direction (z direction), and the side in the depth direction (y direction) from one end point 51d. Thus, the first to third blade-shaped antennas 90a to 90c are fixed by fixing members.

  Here, the weight of the blade-shaped antenna 90 is very light (for example, about 25 g). For this reason, as shown in the figure, it is possible to directly adhere to the side surface of the trash box 50 using a double-sided tape as the fixing member.

  As described above, according to the blade-shaped antenna 90 (90a to 90c) of the second modification, the blade-shaped antenna 90 can be easily attached as compared with the flat antenna 20, and the three blade-shaped antennas are installed at the positions shown in the drawing. By doing so, the RF tag can be reliably read.

Further, in the above-described embodiment, an example in which the RF tag is rectangular has been described, but the RF tag may have any shape (for example, a square, a circle, a rhombus, and the like).
Further, in the above-described embodiment, the case where the shape of the trash can 50 is a rectangular tube is described as an example, but the shape is not limited to this. The shape of the trash can may be any shape as long as it is made of a material other than metal. For example, a cylindrical type or a polygonal type (a triangular type, a pentagonal type, etc.) may be used.

  In the above-described embodiment, the reader / writer 10 includes the determination unit 121 and the notification unit 122, and the reader / writer 10 performs processing such as whether or not to perform overlapped reading. However, the present invention is not limited to this. For example, the reader / writer 10 may transfer the read information to the PC as it is, and perform the process of determining whether or not the overlapped reading is performed on the PC side.

  In the above-described embodiment, the reading system 100 has been described on the assumption that the reading system 100 includes the antenna 20 and the reader / writer 10, but the present invention is not limited to this. For example, the reader / writer 10 may be built in the antenna 20 to form a reader / writer integrated antenna and be driven by a built-in battery. According to this, since the cable does not need to be routed and the reader / writer 20 is not required, the installation is easy and the appearance can be maintained.

  Further, in the above-described embodiment, the case where the antenna pattern of the flat antenna 20 is a spiral type has been described as an example, but the present invention is not limited to this. Other antenna patterns (a flat plate type such as a patch antenna, a mesh type having an aperture, etc.) may be adopted as long as a radio wave is emitted to the near field.

DESCRIPTION OF SYMBOLS 10 ... Reader-writer, 11 ... LAN cable, 12 ... Control part, 13 ... Communication interface, 14 ... Storage part, 15 ... Operation part, 121 ... Determining part, 122 ... Notification part, 20 ... Antenna, 20a, 20b ... Antenna, 21: conductor wire, 21a: feeding point, 21b: termination resistance, 22: conductor foil, 22a to 22d: through hole 23: dielectric, 24: housing, 25: connector, 26: radiation surface, 27: facing Surface, 30, 30a, 30b, 31a to 31c: coaxial cable, 31: conducting wire, 50: trash can, 50a to 50d: side surface, 51: inlet, 51a to 51d: end point, 52: bottom surface, 60: support, 70 , 72: package, 71, 73: RF tag, 80: engaging member, 81: engaged member, 90a to 90c: blade antenna, B: joining member, 100: reading system

Claims (5)

A first radiator that emits a radio wave in opposition to one of the four side surfaces of the trash can including a waste input port, four side surfaces surrounding the input port, and a bottom surface connected to the four side surfaces; A first antenna having a surface;
An antenna including a second antenna having a second radiating surface that emits radio waves in opposition to a side surface orthogonal to the one side surface among the four side surfaces of the trash can;
A reader / writer that alternately emits radio waves to the first antenna and the second antenna,
The reader / writer,
A determining unit that determines whether information read from the read medium based on radio waves emitted by the first and second radiation surfaces is stored,
When the determination unit determines that the storage medium is not stored, a notification unit that notifies that the waste to which the read medium is attached is used,
Reading system. When the value of the received signal strength when reading information from the read medium is equal to or more than a predetermined value, the determination unit determines whether or not the read information is stored.
The reading system according to claim 1 . The notification unit, in addition to the notification that the waste has been used, performs a notification urging the order of the waste,
Reading system according to claim 1 or 2. The waste is a medical product;
Reading system according to any one of claims 1 to 3. The waste is a package of medical supplies;
Reading system according to any one of claims 1 to 3.

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