JP2006153328A - Portable recording media, cleanroom clothing and cleanroom clothing check device - Google Patents

Abstract

[Purpose] It is suitable for the management of cleanroom clothing, and by automatically setting appropriate management items, the cleanroom clothing to be worn is automatically checked in conjunction with the cleanroom cleanliness class.
[Configuration] A usage history storage area (140) for storing a usage history of the cleanroom clothes (40) is formed in the data carrier (10). The usage history includes at least a wear history, preferably a washing history or a repair history. By reading the usage history stored in the usage history storage area (140), it is possible to automatically and quickly determine whether or not it conforms to the cleanliness class of the clean room (30). Thus, the actual wearing time of wearing the clean room garment (40) can be known, which is suitable for estimating the degree of contamination of the clean room garment (40).
[Selection] Figure 1

Description

The present invention relates to clothes for business use such as uniforms, clothes for clean rooms equipped with a portable recording medium that can be read and written such as RFID, and clothes for clean rooms for checking whether or not the cleanliness class of the clean room is met. This is a technology related to a check device.
Further, the garment manufacturer, cleaning company, user company, etc. can effectively manage the cleanliness class by dividing the recording area of the recording medium and using it properly according to its use. Technology.

  Strict quality conditions are imposed on cleanroom garments, and it is an issue to accurately grasp the state of fiber degradation during garment wear. Particularly in a clean room with a high degree of cleanliness, it is desired to improve the work quality by managing the wear history of clothes for clean rooms and wearing clothes with little deterioration in the clean room. In a clean room with a relatively low cleanliness, it is not a big problem to wear clothes that have been worn for some time.

  However, until now, there has been no effective method of properly managing the wear history of cleanroom clothing and selectively using it depending on the degree of cleanliness.

  Clean room clothes are clothes used according to the clean room cleanliness class (in this specification, “clean room clothes” includes dust-proof clothes, dust-free clothes, etc., and forms include overall, upper clothes, lower clothes In addition to separate-type and white-type clothing such as clothing, accessories such as hats and shoes are also determined. However, depending on the degree of use, that is, the number of days worn, the number of washing, etc. As a result, the standard for use in a clean room will not be met. However, there is no means for accurately judging the wear history of clothes, and clothes that have deteriorated due to visual confirmation of deterioration are discarded.

  The present invention has been made in view of the above, and is suitable for management of clothes for clean rooms, and by setting appropriate management items, it is automatically determined whether or not the clothes are suitable for a cleanliness class of a predetermined clean room. It is an object of the present invention to provide a portable recording medium, a clean room garment, and a clean room garment check device that can be performed in a simple manner.

In order to solve the above-mentioned problem, in the present invention according to claim 1, it is attached to the clothes for clean rooms,
A portable recording medium is provided in which a usage history storage area in which a usage history of the cleanroom clothes can be written is formed in a memory.
According to a second aspect of the present invention, there is provided the portable recording medium according to the first aspect, wherein the use history is used for determination of a cleanliness class of a clean room.
According to a third aspect of the present invention, there is provided the portable recording medium according to the first or second aspect, wherein the usage history stored in the usage history storage area includes a history of wearing cleanroom clothing. .
In the present invention according to claim 4, the use history stored in the use history storage area further includes at least one of a washing history and a repair history of cleanroom clothes. Provided is a portable recording medium.
In the present invention according to claim 5, the memory is set by dividing a plurality of accessible storage areas, and each storage area is set to be accessible according to the access authority of the operator. The portable recording medium according to any one of claims 1 to 4, wherein the portable recording medium is provided.
According to a sixth aspect of the present invention, there is provided a cleanroom garment comprising the portable recording medium according to any one of the first to fifth aspects.
In this invention of Claim 7, the communication means which reads the use log | history memorize | stored in the portable recording medium attached to the clothes for clean rooms,
A class criterion storage unit for storing a cleanliness criterion for determining the cleanliness class of the cleanroom based on the use history of the cleanroom clothes;
The usage history read by the communication means is compared with the cleanliness criterion stored in the class criterion storage unit, and the cleanroom garment having the usage history satisfies a predetermined cleanroom cleanliness criterion. A comparison / determination unit that determines whether or not
Provided is a clothing check apparatus for a clean room, comprising output means for outputting a result of comparison / determination by the comparison / determination unit.
In the present invention according to claim 8, the cleanliness criterion stored in the class criterion storage unit reads out use history information of the portable recording medium when cleaning cleanroom clothing, and actually uses the cleanroom clothing. 8. The cleanroom garment according to claim 7, wherein the quality is inspected, created or updated by comparing the inspection result and the use history, and fed back to the class criterion storage unit. Provide checking device.
The present invention according to claim 9 further includes an entrance / exit management function for reading out authentication information as to whether or not an entrance permission standard for a clean room that is stored in the portable recording medium is satisfied, and performing entrance / exit management of the clean room. A clean room garment check device according to claim 7 or 8, characterized by the above.
In the present invention according to claim 10, the output means is a warning generator that issues a warning when the result of comparison / determination by the comparison / determination unit does not satisfy a predetermined clean room cleanliness criterion, Or it is a display apparatus which displays the clean room of the cleanliness class which satisfy | fills predetermined cleanliness criteria as a result of the comparison / determination by the said comparison / determination part, It is any one of Claims 7-9 characterized by the above-mentioned. A clean room clothing check device is provided.

  According to the present invention, the use history storage area for storing the use history of the clothes for the clean room is formed on the portable recording medium. Therefore, by reading the use history stored in the use history storage area, it is possible to automatically and quickly determine whether or not the clean room cleanliness class is met. That is, according to the present invention, it is possible to provide a specific means for using the use history of the clean room garment for the determination of the clean room cleanliness class. In addition, it is preferable that the usage history stored in the usage history storage area includes, in particular, a wear history and the wear time is stored. This makes it possible to know the actual wearing time of wearing the clean room garment, which is suitable for estimating the degree of contamination of the clean room garment.

Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.
FIG. 1 is a schematic diagram of a data carrier (portable recording medium) 10 and a cleanroom clothing check device 18 according to this embodiment. In this figure, RFID is used as a data carrier. The check device 18 is a portion within a broken line, and comprises an RFID reader / writer 20 and a computer 25.

  As shown in FIG. 1, the data carrier 10 includes an antenna 11, a modem unit 12, a rectifier unit 13 that rectifies radio waves from the reader / writer 20, a memory 14, and a control unit 15 that controls the entire data carrier. Has been. The control unit 15 exchanges data with the reader / writer via the antenna 11 and the modem unit 12 and records the contents in the memory 14. In the memory 14, in addition to information unique to the data carrier 10, usage history information related to the cleanroom clothes 40 is written. The data carrier 10 may be anything as long as it has a readable / writable memory 14. For example, in the case of RFID, it may be either an active type having its own power supply or a passive type having no power. The data carrier 10 may be anything that can be attached to any part of the cleanroom garment 40 by sewing, bonding, or the like, but it needs to have a structure that can withstand washing. Further, the shape may be any shape such as a square or a circle (coin shape).

  The memory 14 is preferably usable by a plurality of operators, for example, a manufacturer of a clean room garment, a cleaner of the garment, a user of the garment, and the like, and is further classified according to the access authority of the operator. In addition, a structure having a plurality of storage areas is preferable. For example, as shown in FIG. 2, three storage areas of a clean room garment manufacturer area 141, a cleaning company area 142, and a user company area 143 are formed. The manufacturer area 141 stores various production information such as a manufacturer code, product model number, lot number, and shipping history. The cleaning company area 142 stores a cleaning company code, a management code, a customer code, a washing history, a repair history, and the like. The user company area 143 stores entrance / exit management information such as employee code and security code, and wear history information. Among these, the information regarding the washing history and the repair history stored in the cleaning company area 142 and the information regarding the wear history stored in the user company area 143 are used history information in the present embodiment, and are stored. The portion becomes the usage history storage area 140 defined in the claims.

  The access authority can be set, for example, in three stages: “：: read / write”, “◯: read”, and “×: inaccessible”. Referring to FIG. 3, the manufacturer indicates “◎: Read / write” for all information for the manufacturer area 141, and “◯: Read for all information for the cleaning company area 142. The user company area 143 has an access authority such as “O: Readable” and other information “X: Inaccessible”. Similarly, the cleaning company is given an access authority of “◎: Read / Write” in the cleaning company area 142, while “◯: Readable” or “×: Only the “inaccessible” permission is granted. The user company is given an access right “◎: Read / Write” only in the user company area, and all information belonging to the other areas is set with an access right “◯: Readable”.

  The “security code” set in the user company area 143 is used to determine the authenticity of the data carrier 10 to be checked when performing entry / exit management by the cleanroom clothing check device 18. Details will be described later.

  As the wear history stored in the user company area 143, for example, the number of wearing days, the wearing time, and the like can be set, but it is preferable to set not only the number of days but also the wearing time. As the wearing time data, for example, it is preferable that the continuous wearing time and the total wearing time are stored. The continuous wearing time is a time worn without being washed, and can be set to be automatically reset when the cleanroom garment 40 is washed. The total wearing time is the total wearing time from the start of wearing the new clean room garment 40 to the present. The total wearing time is not basically reset. Since the wear history can measure the number of days actually worn and the time, it is preferable to determine whether or not the wear history conforms to a cleanliness class of a predetermined clean room using the wear history as an index. In addition, by storing the wear history, it is possible to appropriately manage the timing of putting out the cleanroom clothes 40 for cleaning.

  As the use history stored in the use history storage area 140, it is appropriate to use the above-described wear history data. However, by setting at least one of the washing history and the repair history, these data can be set. By using together, more appropriate determination can be performed. As the washing history and the repair history, the number of times (total number of times), the date and time (the latest date and time when each history is stored), and the like can be set. By having these data, for example, even if the wearing time of the two clean room garments 40 is approximately the same, only one of them is equal to or more than a predetermined set value in at least one of the number of washings and the number of repairs. The one clean room garment 40 determines that the fiber fatigue is advanced as compared with the other clean room garment 40, and the matching cleanliness class is different even in the same wearing time. Can be made.

  The reader / writer 20 of the check device 18 reads information including the use history stored in the data carrier 10 attached to the clean room clothes 40 in a non-contact manner, and includes an antenna 21 and a modulation / demodulation unit 22 constituting communication means. And a system control unit 23 that controls data read / write, and is connected to a computer 25 via a communication interface 24.

  The computer 25 controls the operation of the reader / writer 20 and also stores a class criterion storage unit 26 that stores a cleanliness criterion for determining the cleanliness class of the cleanroom 20 based on the usage history of the cleanroom clothing 40. Then, the usage history read through the antenna 21 and the modem unit 22 as communication means is compared with the cleanliness criterion stored in the class criterion storage unit 26, and the cleanroom garment 40 having the usage history is compared. Includes a comparison / determination unit 27 that determines whether or not a cleanliness criterion according to a clean room is satisfied, and an output unit 28 that outputs a comparison / determination result by the comparison / determination unit.

  As a specific example of the output means 28, for example, a warning generation device that issues a warning when the comparison / determination unit 27 does not satisfy any cleanliness criteria for the clean room can be used. The type of warning of the warning generation device is not limited, and for example, there is a warning by a sound such as a buzzer sound. The output means 28 may be a display device that displays a clean room of a cleanliness class that satisfies a predetermined cleanliness criterion as a result of the comparison / determination by the comparison / determination unit 27. Specifically, a CRT monitor, a liquid crystal display, and the like are connected to the computer 25 and display the corresponding clean room.

  When the data carrier 10 attached to the clean room garment 40 approaches, the reader / writer 20 configured as described above reads the data in the memory 14 of the data carrier 10 and sends it to the computer 25. Based on the read usage history, the computer 25 determines whether or not the cleanroom garment 40 provided with the data carrier 10 satisfies the cleanliness class of the predetermined cleanroom 20. In the user company area 143 of the memory 14, information for identifying an individual such as an employee code and a security code is also stored. Therefore, the check device 18 first belongs to the person who is permitted to enter the clean room with the clothes 40 for the clean room provided with the data carrier 10 based on the personal information before the determination of the cleanliness class. Whether to enter or leave the room is also performed. The check device 18 also performs a process of writing the entry time into the clean room (the exit time when leaving the room) into the memory 14. As a result, the entry / exit time can be managed, and the entry / exit time can be written as the wearing time in the wearing history.

  As the check device 18, a reader / writer 20 that performs non-contact communication with the data carrier 10 is used, and any form may be used corresponding to the type of the data carrier 10, the communication distance, and the like. Yes, but it is convenient to keep it as a gate type as it also serves as entrance / exit management. Further, a plurality of check devices 18 can be provided corresponding to each clean room, or one check device 18 can be provided in each of the plurality of clean rooms. In the former case, since only one criteria for determining the clean room cleanliness class is required, a warning generating device that emits a buzzer sound or the like is sufficient as the output means 28 that reads the use history and outputs the comparison determination result. However, in the latter case, it is preferable to use a display device such as a CRT monitor that guides and displays a clean room that satisfies the conformance criteria.

  As shown in FIG. 4, the clean room 30 is classified into, for example, “class 100”, “class 1000”, and “class 10000” according to the cleanliness. Note that the three clean rooms 30A, 30B, and 30C shown in FIG. 1 are only shown schematically, and may actually be provided in the same building or in different buildings. There may be. Alternatively, the three clean rooms 30A, 30B, and 30C may be deployed in different companies or facilities that are completely unrelated.

  In the class determination criterion storage unit 26 of the check device 18 described above, for example, the following cleanness determination criterion table is set in accordance with each of the three clean rooms 30A, 30B, and 30C. For example, as illustrated in FIG. 5, “class 100” of the clean room 30A corresponds to the case where the determination result of the use history is “A”, and “class 1000” of the clean room 30B is the use history determination. Corresponding to the case where the result is determined to be “B”, “class 10000” of the clean room 30C is set to correspond to the case where the determination result of the use history is determined to be “C”. The usage history determination results “A”, “B”, and “C” are determined in consideration of at least one of a wear history, a laundry history, a repair history, and the like. For example, when only the wear history is used as a reference, the total number of wear days can be set as “A” within 10 weeks, “B” within 11-30 weeks, and “C” within 31-80 weeks. . In addition, in the case of 81 weeks or more, it can be set to stop use as “D”. Further, not only the total number of days but also the continuous wearing time after washing can be set as a reference, and the setting can be made in consideration of both the continuous wearing time and the total wearing day. For example, when the washing history is taken into account, for example, even if the number of wearing days is within 10 weeks, if the number of times of washing is equal to or greater than a predetermined number, it may be determined as “B”. This determination criterion can be appropriately set by a program set in the comparison / determination unit 27 of the check device 18.

Next, a method for determining the cleanliness class of the clean room by the data carrier 10 and the check device 18 according to the present embodiment will be described.
First, a person wearing a clean room garment 40 to which the data carrier 10 is attached passes, for example, a gate-type reader / writer 20. Then, the data carrier 10 is accessed via the reader / writer 20, and the employee code and security code are read from the user company area 143 of the memory 14 (S101 in FIG. 6), and the data is transferred to the computer 25. The computer 25 checks the security code, and determines whether or not the clean room entry qualification is satisfied (S102). Means for checking whether or not the entry / exit qualification is satisfied is arbitrary. For example, a means using a password may be used. However, the present invention can be implemented with a general-purpose data carrier and reader / writer using a security code and has high reliability. A suitable checking means will be described later. And when it determines with satisfy | filling entrance qualification, a wear log | history is read from the user company area 143 of the memory 14 (S103). Further, the washing history or the repair history is also read from the cleaning company area 142 as necessary.

  Next, the comparison / determination unit 27 in the computer 25 of the check device 18 compares the read usage history with the cleanliness criterion stored in the class determination criterion storage unit 26 in advance, and the usage history determines the cleanliness. It is determined whether or not the standard is satisfied (S104). For example, when the information obtained from the wear history corresponds to 15 weeks of wear, in the example of FIG. 5, “B” determination is made as the use history, and entry into the corresponding “rank 1000” clean room A display permitting permission is output (S105). In addition, when the check device 18 is a dedicated gate when entering a clean room that satisfies “rank 100”, even if the wearer himself has obtained the entry qualification for the clean room, If the usage history is determined to be “B”, since the entry permission criteria for the clean room are not satisfied, a warning may be issued by the warning generation device (S106).

  In addition, in the case where the total number of wearing days (hours) in the wear history satisfies the predetermined cleanliness class or when it does not satisfy the predetermined cleanliness class, for example, the cleanroom garment 40 is regularly transported to the cleaning contractor. Washed. At this time, the administrator of the user company can write in the user company area 143 of the data carrier 10 the location of contamination or damage. In the user company, the number of cleanroom garments 40 put out for cleaning and individual information of each cleanroom garment 40 can be surely grasped by reading the information of the data carrier 10, and the cleaning company also accepts it. Since the number of cleanroom clothes 40 can be reliably grasped from the data carrier 10, it is possible to optimize both inventory management at the user company and storage management at the time of cleaning. Then, as shown in FIG. 7, the cleaning company reads the wear history, contamination / damage information, etc. from the user company area 143 of the data carrier 10 by the reader / writer (R / W system), and performs washing and repairing according to them. Do work. After the work, update information on the number of washings and the number of repairs is written in the cleaning company area 142 of the data carrier 10.

  The clean room garment 40 that has been cleaned may be returned to the user company as it is, but when the wear history reaches a certain reference value, a part or all of the garment 40 is sent to the quality control department of the manufacturer. Also good. Further, as shown in FIG. 7, from the use history information stored in the data carrier 10, for example, when the wearing days have reached a predetermined specified value, in an uncleaned state or after a cleaning process In this state, it can be extracted and sent to the quality control department. In the quality control department, the inspection result is notified to the user company. In the user company, the usage history and the inspection result are compared, and the cleanliness criterion stored in the class criterion storage unit 26 of the computer 25 in the check device 18 is updated, or a new determination item is created and added. You can do it. The inspection result from the quality control department can also be fed back to the check device 18 via a communication line. In this case, the check device 18 receives the inspection result information and sets the cleanliness criterion. You can also add a program that automatically updates. In the above description, the cleanroom garment 40 is sent from the cleaning contractor to the quality control department, but if necessary, it is configured to send it directly from the user company to the quality control department for feedback of the inspection results. You can also.

  On the other hand, the check device 18 accesses the data carrier 10 as described above, reads the employee code and security code from the user company area 143 of the memory 14, and checks the security code. This is to prevent a third party from entering a clean room by detecting that the data carrier 10 is an illegally copied copy and is based on the ISO standardization standard. Since the data carrier can be easily rewritten by a general-purpose reader / writer, the check device 18 preferably has a security code check function. In the present embodiment, the following checking means is employed. This will be described with reference to FIGS.

  FIG. 8 is a conceptual diagram showing the data structure of the memory 14 of the data carrier 10. The memory 14 is a system area in which a unique ID that is a unique identifier uniquely added to the data carrier 50 is stored. 145, a first user area to be the manufacturer area 141, a second user area to be the cleaning company area 142, and a third user area to be the user company area 143. Each of the areas 141 to 143 includes a head flag, a data area for storing various data such as a history, and a check code. As the check code, BCC (horizontal / vertical parity), checksum, CRC, and the like are used, and all of them are generated including the Unique ID, so that it is possible to deal with some malicious data alteration. However, since this check code can be generated only from the information recorded on the data carrier, if the generation algorithm is known only with the check code, the data can be easily altered. Therefore, the data carrier 10 of the present embodiment forms a security area 146 in the external area of the above four areas of the memory 14, and stores a security code generated from the Unique ID in the security area 146.

  The security code is generated as shown in FIGS. First, a unique ID is extracted from the data carrier 10 using a reader / writer (S201 in FIG. 10). Next, the unique ID of the data carrier 10 is encrypted. This encryption uses a “one-way function” to make it difficult to analyze the encryption algorithm. A random number sequence pointer is generated by encrypting the Unique ID (S202 in FIG. 10). The random number sequence pointer accesses a predetermined random number sequence (first random number sequence and second random number sequence), acquires a part of the random number sequence, and generates a security code (first security code and second security code). (S203 in FIG. 10). Then, the second security code is written in the security area 146 of the memory 14 (S204 in FIG. 10).

  The first random number sequence and the second random number sequence are generated from a plurality of random number sequences that can be updated periodically, and a security code is generated from the random number sequence. At the time of update, the second random number sequence is copied to the first random number sequence, and the new random number sequence is written to the second random number sequence. The code written in the security area 146 of the memory 14 is always the latest. For this reason, even if a security code generation algorithm can be obtained, it is difficult to copy unless a random number sequence is obtained, and high security can be ensured. There are a plurality of random number sequences, and the random number sequences are rewritten from the oldest ones. Thereby, even when a random number sequence is obtained illegally by a third party, the random number sequence can be invalidated by rewriting.

The check device 18 determines the security code written on the data carrier 10 as follows, and determines whether the data carrier 10 is true or false. This will be described with reference to FIG.
First, the unique ID is read from the data carrier 10, and the check device 18 also generates a second security code anew using the second random number sequence that is the latest random number sequence as in FIGS. 9 and 10 (S301). ). Next, the newly generated second security code and the second security code already written in the data carrier 10 are compared, and if they match, access to the data carrier 10 is permitted (S302).

  On the other hand, if the second security codes do not match, the check device 18 generates a first security code again using the first random number sequence from the Unique ID of the data carrier 10 (S303). The generated first security code and the first security code already written in the data carrier 10 are compared (S304), and if they match, the second security code, which is a newer security code than the first security code. Is written to the data carrier 10 and access to the data carrier 10 is permitted (S305). If they do not match, access to the data carrier 10 is prohibited.

  In the above description, a plurality of random number sequences are prepared, but one may be used. In any case, by using the above-mentioned determination means, even if the data carrier that has been determined is illegally copied including the security code, the data carrier that has been determined by the check device 18 A unique ID is read, and a security code is generated again according to a predetermined algorithm and random number sequence. In the case where the security code of the authentic data carrier is simply stored in the check device 18 and the authenticity is determined based on the security code, it is impossible to cope with the case where the security code is also copied. Accordingly, the security code is generated again using the unique ID of the illegally copied data carrier, so that the security code obtained by the check device 18 is the security written in the illegally copied data carrier. It will definitely be different from the code. Therefore, according to the above means, the authenticity of the data carrier can be reliably determined, and unauthorized entry into the clean room can be prevented.

FIG. 1 is a schematic diagram showing a schematic configuration of a data carrier and a check device according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing a storage structure in the memory of the data carrier. FIG. 3 is a diagram for explaining the access authority to each area stored in the memory. FIG. 4 is a diagram for explaining a mechanism for checking cleanroom clothes using a data carrier and a check device. FIG. 5 is a diagram illustrating an example of the cleanliness criterion stored in the class criterion storage unit of the check device. FIG. 6 is a flowchart showing comparison / determination processing of the check device. FIG. 7 is a diagram showing an example of a transaction form of cleanroom clothes in the quality control departments of user companies, cleaning companies, and manufacturers. FIG. 8 is a conceptual diagram showing the data structure of the memory of the data carrier. FIG. 9 is a conceptual diagram for explaining security code generation means. FIG. 10 is a flowchart showing security code generation and writing processing. FIG. 11 is a flowchart showing a process for determining the security code written on the data carrier.

Explanation of symbols

10 Data carrier 14 Memory 141 Manufacturer area (first user area)
142 Cleaning company area (second user area)
143 User company area (third user area)
18 Clean room clothing check device (check device)
20 Reader / Writer 25 Computer 26 Class Determination Criteria Storage Unit 27 Comparison / Determination Unit 28 Output Means 30 Clean Room 40 Clean Room Clothes

Claims (10)

Attached to cleanroom clothing,
A portable recording medium, wherein a use history storage area in which a use history of the cleanroom clothes can be written is formed in a memory.   2. The portable recording medium according to claim 1, wherein the use history is used for determining a cleanliness class of a clean room.   3. The portable recording medium according to claim 1, wherein the usage history stored in the usage history storage area includes a history of wearing cleanroom clothes.   4. The portable recording medium according to claim 3, wherein the usage history stored in the usage history storage area further includes at least one of a washing history and a repair history of cleanroom clothes.   5. The memory according to claim 1, wherein an accessible storage area is divided into a plurality of storage areas, and each storage area is set to be accessible according to an access authority of a handler. The portable recording medium according to any one of the above.   6. A cleanroom garment comprising the portable recording medium according to claim 1 attached thereto. A communication means for reading a use history stored in a portable recording medium attached to a cleanroom garment;
A class criterion storage unit for storing a cleanliness criterion for determining the cleanliness class of the cleanroom based on the use history of the cleanroom clothes;
The usage history read by the communication means is compared with the cleanliness criterion stored in the class criterion storage unit, and the cleanroom garment having the usage history satisfies a predetermined cleanroom cleanliness criterion. A comparison / determination unit that determines whether or not
And an output means for outputting a result of comparison / determination by the comparison / determination unit.   The cleanliness criterion stored in the class criterion storage unit reads the use history information of the portable recording medium when cleaning cleanroom clothing, inspects the actual quality of the cleanroom clothing, and the inspection result The cleanroom clothing check apparatus according to claim 7, wherein the clothes check apparatus is created or updated in comparison with a use history, and is fed back and set in the class determination criterion storage unit.   9. An entry / exit management function for reading out authentication information stored in the portable recording medium as to whether or not an entry permission criterion for entering a clean room is satisfied and managing entry / exit of the clean room is further provided. The clean room clothing check device described.   The output means is a warning generation device that issues a warning when the result of comparison / determination by the comparison / determination unit does not satisfy a predetermined clean room cleanliness criterion, or the comparison by the comparison / determination unit The cleanroom garment check device according to any one of claims 7 to 9, which is a display device that displays a cleanroom of a cleanliness class that satisfies a predetermined cleanliness criterion as a result of the determination.

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