JP5324933B2 - Chemical substance management system - Google Patents

Description

  The present invention relates to a chemical substance management system that requires strict management of the amount handled.

  For example, various chemical substances (including pharmaceuticals) are used in universities, corporate laboratories, medical settings, factories, etc., but in order to prevent unauthorized use, the chemical substances need to be managed strictly. Has been. As a system for performing such management, the system described in Patent Document 1 is known. In this management system, the weight of a chemical substance is measured for each container by an electronic balance and stored in a computer connected to the electronic balance. In the management system, paying attention to individual differences in the weight of the container including the packaging material, the chemical substance placed on the electronic balance is automatically determined by measuring the weight of the container strictly. However, the weight of some chemical substances, including the containers of chemical substances, may rarely match. In this case, use a computer connected to an electronic balance to handle from multiple candidate chemical substances. Selected manually.

JP2001-344348

  By the way, when handling chemical substances, the operator usually wears gloves to protect his hands from chemical substances. Also, chemicals and other dirt are often attached to the outer surface of gloves and containers. For this reason, the above-described management system (1) may not be able to accurately determine due to dirt attached to the outer surface of the container. (2) It is inconvenient because it is necessary to remove gloves when operating the computer. There was a problem.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chemical substance management system capable of strictly managing the amount handled by a simple operation.

  In order to achieve the above object, a chemical substance management system according to the present invention includes a first RFID tag attached to a container containing a chemical substance and storing a chemical substance identifier for identifying the chemical substance, and the weight of the chemical substance. Weight measuring means for measuring each container, first reading means for reading a chemical substance identifier from a first RFID tag attached to the container being measured by the weight measuring means, and the weight of the container measured by the weight measuring means And a registering means for registering in the first storage means in association with the chemical substance identifier associated with the container read by the first reading means.

  According to the present invention, when the weight of a chemical substance is measured, the chemical substance identifier is read from the RFID tag attached to the container containing the chemical substance, so that the work of specifying the chemical substance and measuring the weight can be easily performed. be able to.

  By the way, in this type of management system, not only the weight of the chemical substance but also the management of the handler is important as described above. Therefore, in the present application, in the above system, the second RFID tag that is carried by the handler and stores the handler identifier that identifies the handler, and the second RFID tag that reads the handler identifier from the second RFID tag of the handler. The registration means obtains a handler identifier using the second reading means prior to registration of the chemical substance identifier and weight, and the handler identifier for the chemical substance identifier and weight. Are registered in the first storage means in association with each other. According to the present invention, the operation for specifying the handler can be performed in a non-contact manner, which is highly convenient.

  Further, in the present application, the second reading means includes first and second antennas, and the registration means reads the chemical substance identifier before use of the chemical substance when the operator identifier is read by the first antenna. , When the weight and the handler identifier are registered in the first storage means and the handler identifier is read by the second antenna, the chemical substance identifier, the weight and the handler identifier are set to the first after use of the chemical substance. What is characterized by registering in a memory | storage means is proposed. According to the present invention, the operation of specifying the chemical substance before or after use can also be performed in a non-contact manner, which is highly convenient.

  On the other hand, the following methods are proposed as methods for specific operations of the handlers. That is, in the present application, in the above system, the input means that can be input by the handler's foot, the second storage means that stores information of a plurality of handlers including the handler identifier, and the second storage means are stored. The operator is specified by displaying part or all of the plurality of operator information and selecting one operator information from the displayed plurality of operator information based on the input from the input means. Specifying means, and the registration means specifies a handler using the specifying means prior to registration of the chemical substance identifier and weight, and the identification of the specified handler with respect to the chemical substance identifier and weight. It proposes what is characterized by associating a handler identifier and registering it in the first storage means. According to the present invention, it is possible to perform an operator's specific work without using a hand, so that the convenience is high.

  By the way, in the said invention, as mentioned above, the selection operation of handler information is performed with the input means operated with a foot | leg. Therefore, when there is a lot of handler information to be displayed, the selection work may be complicated. Therefore, it is preferable that the specifying unit sets a priority order for the handler identifier, and displays a part or all of the plurality of handler information arranged in order from the highest priority order.

  Priorities include: (1) a handler who has registered before using the chemical substance but has not registered it after use, (2) a handler who has taken out the key from the key vault within a predetermined time period, and (3) It is preferable to set a handler with a large number of registrations within a predetermined period as a higher rank.

  Further, in the present application, the registration means is provided when there is data in the first storage means that is registered before use but has no registration after use for the chemical substance identifier related to the container read by the first reading means. Is used after use, and when the data is not in the first storage means, the use situation is set as before use, and the chemical substance identifier and the weight are registered in the first storage means together with the use situation. We propose what According to the present invention, since the operator does not need to input an operation status before or after using the chemical substance, convenience is further improved.

  As described above, according to the present invention, when the weight of a chemical substance is measured, the chemical substance identifier is read from the RFID tag attached to the container that contains the chemical substance. Work can be done easily.

Schematic diagram of chemical substance management system Functional block diagram of registration computer Functional block diagram of the database server The figure which shows an example of user information The figure which shows an example of the key vault opening / closing history Figure showing an example of key usage history Diagram showing an example of chemical substance information Figure showing an example of chemical substance usage history Functional block diagram of key vault Flow chart explaining operation of key storage Flow chart explaining operation of registration computer The figure explaining an example of the screen at the time of selection of a use situation The figure explaining an example of the screen at the time of handling person's specification Functional block diagram of a registration computer according to the second embodiment The flowchart explaining operation | movement of the computer for registration which concerns on 2nd Embodiment. Functional block diagram of a registration computer according to the third embodiment The flowchart explaining operation | movement of the computer for registration which concerns on 3rd Embodiment.

(First embodiment)
A chemical substance management system according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a chemical substance management system.

  As shown in FIG. 1, the chemical substance management system includes a chemical substance weight registration computer 100, a database server 200 for storing various data, a data management computer 300, a chemical substance storage 400, And a key storage 500 for storing the keys of the storage 400. The registration computer 100, the database server 200, the management computer 300, and the key storage 500 are connected to each other via a LAN 600 so as to communicate with each other.

  An RFID tag 11 is attached to the container 10 containing the chemical substance. The unique identifier of the RFID tag 11 is used as a chemical substance ID. The storage 400 for storing the container 10 is locked to the door, and the key 20 is required for unlocking. An RFID tag 21 is attached to the key 20. The unique identifier of the RFID tag 21 is used as a key ID.

  The registration computer 100 reads the chemical substance ID in a non-contact manner from the electronic balance 150 that measures the weight of the chemical substance together with the container 10 and the RFID tag 11 attached to the chemical substance container 10 being measured by the electronic balance 150. A reader / writer 160 is connected to a foot switch 170 which is an input means for performing input by the operator's foot. The antenna 161 of the reader / writer 160 is installed on the side of the electronic balance 150 and can communicate with the RFID tag 11 attached to the container 10 on the electronic balance 150. The foot switch 170 includes one or a plurality of switch elements, and enables a selection operation or the like in an application operating on the registration computer 100. In this embodiment, a foot switch capable of only binary input such as on / off is used as an input means for inputting by the operator's foot, but continuous multi-values are input using a variable resistor or the like. A possible foot pedal, a trackball capable of inputting rotation information in the up / down / left / right directions, or the like may be used, and a plurality of these input means may be combined.

  The registration computer 100 will be described in detail with reference to FIG. FIG. 2 is a functional block diagram of the registration computer. As illustrated in FIG. 2, the registration computer 100 includes a balance control unit 111 that receives measurement values from the electronic balance 150, a reader / writer control unit 112 that controls the reader / writer 160, and the weight of the chemical substance in the database server 200. A registration processing unit 113 for registration, a display unit 114 for displaying various types of information, and a display control unit 115 for displaying display contents related to the registration processing by the registration processing unit 113 on the display unit 114 are provided. In the present embodiment, the registration processing unit 113 and the display control unit 115 are implemented as one application (registration application 116). The registration application 116 is activated by an instruction from the operator or an instruction from the balance control unit 111. The operation of the registration computer 100 will be described later.

  Next, the database server 200 will be described with reference to FIG. FIG. 3 is a functional block diagram of the database server. The database server 200 includes a database 210 for accumulating data, a user management unit 221 for processing information on a handler, a key management unit 222 for processing information on the key 20, and a chemical substance management unit for processing information on chemical substances. 223 and a user interface 231 for facilitating access to the information processed by the management units 221, 222, and 223 with respect to the management computer 300.

  The database 210 stores user information 211, key storage opening / closing history 212, key usage history 213, chemical substance information 214, and chemical substance usage history 215. As illustrated in FIG. 4, the user information 211 stores attribute information such as the user ID and name of the handler. As illustrated in FIG. 5, the key vault open / close history 212 stores the date and time when the key vault 500 is opened, the date and time when the key vault 500 is closed, and the user ID of the operator who opened and closed the key vault. As illustrated in FIG. 6, the key usage history 213 includes the key ID, the date and time when the key 20 was taken out or accommodated, the “situation” that distinguishes either the retrieval or accommodation, and the key 20 was removed or accommodated. The user ID of the handler is stored. As illustrated in FIG. 7, the chemical substance information 214 stores chemical substance IDs and attribute information such as names and expiration dates. As illustrated in FIG. 8, the chemical substance use history 215 includes the chemical substance ID, the date and time of weight measurement before use of the chemical substance, the date and time of weight measurement after use, and the measured weight before use of the chemical substance. The measured weight after use and the user ID of the person handling the chemical substance are stored.

  The user management unit 221 mainly controls access to the user information 211, processing for requests for addition / deletion / modification / viewing of data from the management computer 300, and from the registration computer 100 and the key storage 500. Answer processing for inquiries. The key management unit 222 mainly controls access to the key vault opening / closing history 212 and the key use history 213, processing for data browsing requests from the management computer 300, registration processing from the key vault 500, and the like. I do. The chemical substance management unit 223 mainly controls access to the chemical substance information 214 and the chemical substance use history 215, processing for a data browsing request from the management computer 300, registration processing from the registration computer 100, and the like. I do.

  The management computer 300 accesses the database server 200 to browse various data stored in the database server 200 and maintain master information. As described above, the user interface 231 for the management computer 300 is mounted on the database server 200, and the management computer 300 can access data in the database server 200 via the user interface 231. Yes.

  Next, the key storage 500 will be described with reference to FIG. FIG. 9 is a functional block diagram of the key storage. As shown in FIG. 9, the key storage 500 includes an electronic lock 501 that unlocks and locks a door (not shown), a door opening / closing sensor 502 that detects the opening / closing state of the door, and a control and database of the electronic lock 501. A key storage control unit 503 that performs registration processing in the server 200, a tag reading control unit 504 that reads a key ID from the RFID tag 21 attached to the key 20 in the key storage 500, and for reading the RFID tag 21 Antenna 505, an IC card reading control unit 506 for reading a user ID from a non-contact IC card (not shown) carried by the operator, and an antenna 507 for reading the non-contact IC card. Note that a non-contact IC card (not shown) carried by a handler has a plate-like member embedded with an RFID tag, and uses a unique identifier of the RFID tag as a user ID. The operation of the key storage control unit 503 will be described later.

  A usage form of the chemical substance management system according to the present embodiment will be described. The administrator inputs user information 211 and chemical substance information 214 in advance using the management computer 300. A handler who uses a chemical substance opens the key storage 500 using an IC card storing his / her user ID, and takes out the key 20 of the storage 400 containing the desired chemical substance. The handler uses the key 20 to open the storage 400 and take out the chemical substance. Next, the operator registers the weight of the chemical substance before use using the registration computer 100. When the use of the chemical substance is finished, the handler registers the weight of the chemical substance after use using the registration computer 100. Next, the operator opens the storage 400 using the key 20 and returns the chemical substance to the storage 400. Finally, the handler opens the key storage 500 using the IC card and returns the key 20. The key 20 may be returned to the key storage 500 before use of the chemical substance and taken out from the key storage 500 again after use.

  Next, the operation of the chemical substance management system according to the present embodiment will be described in accordance with the above usage form. First, the operation of the key storage 500 will be described with reference to the flowchart of FIG.

  When the user ID is read from the IC card by the IC card reading control unit 506 (step S1), the key storage control unit 503 of the key storage unit 500 inquires of the database server 200 whether or not the user ID is registered. (Step S2). If the user ID is unregistered as a result of the inquiry, it is assumed that the operator does not have the authority to use the chemical substance, and the process ends (step S3). If the user ID has been registered as a result of the inquiry, the key storage control unit 503 controls the unlocking of the electronic lock 501 and adds data to the key storage opening / closing history 212 (steps S4 and S5). When the key storage control unit 503 detects removal or storage of the key 20 from the key storage 500 while the door is open, the key storage control unit 503 adds data to the key usage history 213 for the key 20 (steps S6 and S7). The removal of the key 20 is detected when the RFID tag 21 attached to the key 20 becomes unreadable from readable. The storage of the key 20 is detected when the RFID tag 21 can be newly read. When the key storage control unit 503 detects the door closing by the door opening / closing sensor 502 (step S8), the key storage control unit 503 controls the electronic lock 501 and adds data to the key storage opening / closing history 212. (Steps S9 and S10).

  Next, processing when the handler registers the weight in the database server 200 before or after using the chemical substance will be described with reference to FIG. When the handler places the container 10 containing the chemical substance on the electronic balance 150, the electronic balance 150 transmits the measured weight of the container 10 to the registration computer 100, and the registration processing unit 113 of the registration computer 100 is the balance control unit 111. The measured weight is received via (step S21). Next, the registration processing unit 113 causes the operator to select whether the registration processing is before or after use of the chemical substance (step S22). An example of the screen content of the display unit 114 during this selection process is shown in FIG. As shown in FIG. 12, buttons for selecting “before use”, “after use”, and “cancel” are displayed on the display unit 114, and any one of the buttons is selected by selecting the foot switch 170. Next, the registration processing unit 113 performs a handler identification process (step S23). In the specifying process, a list of handlers is displayed as illustrated in FIG. One of the handlers is selected by selecting the foot switch 170.

  Here, the list of handlers is data stored in the user information 211 of the database server 200. The present invention is characterized by the display order of the list. That is, in the present invention, priority is set for each data stored in the user information 211, and the display order is controlled according to the priority. For example, (a) an operator who has registered before use but has not yet registered after use, and (b) an operator who has used the key vault 500 within a predetermined period. (C) A handler who frequently performs registration before or after use within a predetermined period, (d) any combination of the above (a) to (c), and the like. Thereby, since the list is displayed on the display unit 114 in descending order of the possibility of being an actual handler, the average number of operations of the foot switch 170 can be reduced. Therefore, convenience is improved. Further, when the priority is lower than a predetermined value, the display of the data of the operator is restricted, and the item of “other users” is displayed on the list of the display unit 114, and the corresponding operator is displayed. It is preferable to display these data as a separate list.

  Next, the registration processing unit 113 reads the chemical substance ID from the RFID tag 11 of the container 10 placed on the electronic balance 150 using the reader / writer control unit 112 (step S24). Finally, the registration processing unit 113 registers the measured weight in the database server 200 (Step S25). More specifically, when “before use” is selected in step S22, the registration processing unit 113 registers the chemical substance ID, the date and time before use, the weight before use, and the user ID. Here, the current date and time or the processing date and time of step S21 is set as the date and time before use, and the measured weight acquired in step S21 is set as the weight before use. On the other hand, when “before use” is selected in the step S22, the data after the use is obtained for the data in which the chemical substance ID and the user ID match and the columns for the date and time after use and the weight after use are empty. Add date and time and weight after use. Here, the current date and time or the processing date and time of step S21 is set as the date and time after use, and the measured weight acquired in step S21 is set as the weight after use.

As described above, in the chemical substance management system according to the present embodiment, the operator can operate the registration computer 100 with the foot switch 170 when measuring the weight of the chemical substance, so that convenience is improved. In the present embodiment, since the list of handlers is displayed on the display unit 114 in descending order of the probability of being an actual handler in the handling process of the handler, the average operation amount of the foot switch 170 can be reduced. . This further improves convenience.

(Second Embodiment)
A chemical substance management system according to a second embodiment of the present invention will be described with reference to the drawings. The chemical substance management system according to the present embodiment is different from the first embodiment in the use status selection process and the handler identification process in the registration computer 100. Since other configurations and operations are the same as those in the first embodiment, only the differences will be described here.

  As shown in FIG. 14, the registration computer 100 according to the present embodiment includes a balance control unit 111 that receives measurement values from the electronic balance 150, a reader / writer control unit 112 that controls the reader / writer 160, a chemical substance A registration processing unit 113 for registering the weight in the database server 200, a display unit 114 for displaying various information, a display control unit 115 for displaying display contents related to the registration processing by the registration processing unit 113 on the display unit 114, An IC card reading control unit 121 that reads a user ID from a non-contact IC card (not shown) carried by a handler, and two antennas 122 and 123 for reading the non-contact IC card are provided. Unlike the first embodiment, there is no foot switch or the like as an input means for performing input by the operator's foot. The IC card is the same as that used in the key storage 500.

  One of the two antennas 122 and 123 is used for pre-use registration, and the other antenna 123 is used for pre-use registration. Thereby, it can be specified whether it is pre-use registration or post-use registration by specifying the antenna from which the user ID was read from the IC card.

  Next, processing when the handler registers the weight in the database server 200 before or after using the chemical substance will be described with reference to FIG. When the handler places the container 10 containing the chemical substance on the electronic balance 150, the electronic balance 150 transmits the measured weight of the container 10 to the registration computer 100, and the registration processing unit 113 of the registration computer 100 is the balance control unit 111. The measured weight is received via (step S31). Next, when the IC card reading control unit 121 reads the user ID from the IC card (step S32), the registration processing unit 113 inquires of the database server 200 whether or not the user ID is registered (step S33). . If the user ID is not registered as a result of the inquiry, it is assumed that the operator does not have the authority to use the chemical substance, and the process is terminated (step S34). If the user ID is registered as a result of the inquiry, the registration processing unit 113 reads the chemical substance ID from the RFID tag 11 of the container 10 placed on the electronic balance 150 using the reader / writer control unit 112 (step S35). Finally, the registration processing unit 113 registers the measured weight in the database server 200 (Steps S36 to S38). More specifically, when the user ID is read by the pre-use registration antenna 122 in step S32, the registration processing unit 113 sets the chemical substance ID, the pre-use date / time, the pre-use weight, and the user ID. Is registered (steps S36 and S37). Here, the current date and time or the processing date and time of step S31 is set as the date and time before use, and the measured weight acquired in step S31 is set as the weight before use. On the other hand, if the user ID is read by the post-use registration antenna 123 in step S32, the chemical substance ID and the user ID match, and the post-use date and post-use weight columns are empty. The date and time after use and the weight after use are added to certain data (steps S36 and S38). Here, the current date and time or the processing date and time of step S31 is set as the date and time after use, and the measured weight acquired in step S31 is set as the weight after use.

  As described above, in the chemical substance management system according to the present embodiment, when measuring the weight of a chemical substance, the handler simply holds the IC card over one of the two antennas 122 and 123 of the registration computer 100. Convenience is improved because it is possible to specify the usage status and the operator.

(Third embodiment)
A chemical substance management system according to a third embodiment of the present invention will be described with reference to the drawings. The chemical substance management system according to the present embodiment is different from the second embodiment in the use state specifying process in the registration computer 100. Since other configurations and operations are the same as those of the second embodiment, only the differences will be described here.

  As shown in FIG. 16, the registration computer 100 according to the present embodiment includes a balance control unit 111 that receives measurement values from the electronic balance 150, a reader / writer control unit 112 that controls the reader / writer 160, a chemical substance A registration processing unit 113 for registering the weight in the database server 200, a display unit 114 for displaying various information, a display control unit 115 for displaying display contents related to the registration processing by the registration processing unit 113 on the display unit 114, An IC card reading control unit 121 that reads a user ID from a non-contact IC card (not shown) carried by a handler and an antenna 125 for reading the non-contact IC card are provided. Unlike the first embodiment, there is no foot switch or the like as an input means for performing input by the operator's foot. The IC card is the same as that used in the key storage 500.

  In the second embodiment, two antennas 122 and 123 are provided, and whether the registration before use or after use is specified by specifying the antenna from which the user ID is read from the IC card. On the other hand, in the present embodiment, the usage status is specified with reference to the database server 200. Hereinafter, processing when the handler registers the weight in the database server 200 before or after using the chemical substance will be described with reference to FIG.

  When the handler places the container 10 containing the chemical substance on the electronic balance 150, the electronic balance 150 transmits the measured weight of the container 10 to the registration computer 100, and the registration processing unit 113 of the registration computer 100 is the balance control unit 111. The measured weight is received via (step S41). Next, the registration processing unit 113 reads the chemical substance ID from the RFID tag 11 of the container 10 placed on the electronic balance 150 using the reader / writer control unit 112 (step S42). Next, the registration processing unit 113 specifies the usage status. Specifically, the measured weight before use is registered in the chemical substance usage history 215 of the database server 200 using the chemical substance ID acquired in step S42 as a key, but the measured weight after use is registered. An inquiry is made as to whether or not there is any data (step S43). If the data exists, the usage status is determined to be “after use” (steps S44 and S45), and if the data does not exist, the usage status is determined to be “before use” (step S44, S45). Steps S44 and S46).

  Next, when the IC card reading control unit 121 reads the user ID from the IC card (step S47), the registration processing unit 113 inquires of the database server 200 whether the user ID is registered (step S48). . If the user ID is not registered as a result of the inquiry, it is assumed that the operator does not have the authority to use the chemical substance, and the process is terminated (step S49). If the user ID has already been registered as a result of the inquiry, the registration processing unit 113 performs registration processing on the database server (step S50). More specifically, when the usage status is determined to be before use by the usage status specifying process, the registration processing unit 113 registers the chemical substance ID, the date and time before use, the weight before use, and the user ID. To do. Here, the date and time before use is set to the current date and time or the processing date and time of step S41, and the weight before use is set to the measured weight acquired in step S41. On the other hand, when it is determined that the usage status is after use by the usage status specifying process, the chemical substance ID and the user ID match, and the post-use date / time and post-use weight columns are empty. In addition, add the date and time after use and the weight after use. Here, the current date and time or the processing date and time of step S41 is set as the date and time after use, and the measured weight acquired in step S41 is set as the weight after use.

  As described above, in the chemical substance management system according to the present embodiment, the usage status specifying process is automatically performed, and the operator can specify the operator only by holding the IC card over the antenna 125 of the registration computer 100. Can improve convenience.

In this embodiment, an operator is specified using an IC card. However, the operator may be selected by a foot switch or the like as in the first embodiment.

  Although the embodiment of the present invention has been described in detail above, the present invention is not limited to this. For example, as a means for selecting a use situation and specifying a handler, the foot switch 170 is used in the first embodiment and the IC card is used in the second and third embodiments. You may combine.

  Further, in the above embodiment, when the container 10 is placed on the electronic balance 150, the measured weight is transmitted to the registration computer 100, and the registration processing unit 113 and the like are activated upon reception of the measured weight. You may make it start by the instruction | indication from a handler.

  Further, in the above embodiment, the three functions of registration processing, data management processing, and data accumulation are implemented in the registration computer 100, the management computer 300, and the database server 200, respectively. The implementation form of this function is not required. For example, all the functions may be implemented in one computer, or one function may be distributed and implemented in a plurality of computers.

  DESCRIPTION OF SYMBOLS 10 ... Container, 11 ... RFID tag, 20 ... Key, 21 ... RFID tag, 100 ... Registration computer, 150 ... Electronic balance, 160 ... Reader / writer, 170 ... Foot switch, 200 ... Database server, 300 ... Management computer, 400 ... Chemical substance storage, 500 ... Key storage.

Claims (8)

A first RFID tag attached to a container containing a chemical substance and storing a chemical substance identifier for identifying the chemical substance;
A weight measuring means for measuring the weight of the chemical substance in each container;
First reading means for reading the chemical substance identifier from the first RFID tag attached to the container being measured by the weight measuring means;
A second RFID tag that is carried by a handler and stores a handler identifier that identifies the handler;
Second reading means for reading the handler identifier from the second RFID tag of the handler;
After obtaining the handler identifier using the second reading means, the handler identifier obtained by the second reading means, the weight of the container measured by the weight measuring means, and the container read by the first reading means Registration means for associating the chemical substance identifier with the first storage means ,
The second reading means includes first and second antennas;
When the operator identifier is read by the first antenna, the registration means registers the chemical substance identifier, the weight and the operator identifier in the first storage means before using the chemical substance, and the second antenna uses the second antenna. A chemical substance management system characterized in that, when a handler identifier is read, the chemical substance identifier, weight and handler identifier are registered in the first storage means after use of the chemical substance. A first RFID tag attached to a container containing a chemical substance and storing a chemical substance identifier for identifying the chemical substance;
A weight measuring means for measuring the weight of the chemical substance in each container;
First reading means for reading the chemical substance identifier from the first RFID tag attached to the container being measured by the weight measuring means;
Input means that can be input by the feet of the handler,
Second storage means for storing information of a plurality of handlers including a handler identifier;
A part or all of the plurality of handler information stored in the second storage means is displayed and one handler information is selected from the displayed plurality of handler information based on the input from the input means. A specific means for identifying the handler by
After specifying the handler using the specifying means, the handler identifier of the specified handler, the weight of the container measured by the weight measuring means, and the chemical substance identifier related to the container read by the first reading means, A chemical substance management system comprising: registration means for associating and registering the information in the first storage means. A use state selection means for selecting whether the chemical substance is used before or after use based on an input from the input means;
The said registration means registers the said chemical substance identifier, a weight, and a handler identifier with the usage condition selected by the said usage condition selection means in a 1st memory | storage means. The chemical substance management system of Claim 2 characterized by the above-mentioned. . 4. The chemical substance management according to claim 3 , wherein the specifying means sets a priority order for the handler identifier, and displays a part or all of the plurality of handler information arranged in order of the priority order. system. The specifying means extracts from the first storage means a handler identifier that has been registered before use but has not been registered after use, and sets the priority of the handler identifier higher than other handler identifiers. The chemical substance management system according to claim 4 . A second RFID tag that is carried by a handler and stores a handler identifier that identifies the handler;
And a key vault containing keys for chemical vaults,
The key storage has a restricting means for restricting the key removal by the handler, a second reading means for reading the handler identifier from the second RFID tag of the handler, and a handler identifier by the second reading means. Control means for controlling the control means so as to release the control of key retrieval when read, and storing a handler identifier in a third storage means,
5. The chemical substance management system according to claim 4 , wherein the specifying unit sets the priority of the handler identifier stored in the third storage unit within a predetermined period higher than other handler identifiers. The specifying unit calculates the number of registrations of either one or both of the registration before use and the registration after use stored in the first storage unit within a predetermined period, and sets the priority order in descending order of the number of registrations. The chemical substance management system according to claim 4, wherein: The registration means uses the usage status when there is data in the first storage means that is registered before use but not registered after use for the chemical substance identifier related to the container read by the first reading means. 2. After, when the data is not in the first storage means, the use status is set as before use, and the chemical substance identifier and the weight are registered in the first storage means together with the use status. Or the chemical substance management system of 2.

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