JP2011094390A - Key management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key management system capable of accurately managing keys without relying on the shapes and the arrangement of the keys. <P>SOLUTION: A conductor forming the key side coil 14 of a noncontact information medium 17 is wrapped around the through hole 13 of a key cover 12 holding a part of a key body 11, and a key communication coil 24 for communicating with the noncontact information medium 17 is provided to a ring 20 for binding up keys 10 by inserting into the through hole 13 of the key cover 12. Since the key communication coil 24 of the ring 20 can perform communication with the key side coil 14 of the key cover 12 bound up to the ring 20 in the close state, the keys can be accurately managed, without relying on the shapes and the arrangement of the keys, by merely attaching the ring 20 to which the keys 10 are bound up to a hanger 4 and storing the ring and the hanger in a key storage chamber 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a key management system that manages keys using a non-contact information medium that stores predetermined identification information and can communicate with an external device via a coil.

  Conventionally, an RFID (Radio Frequency Identification) system has been developed as one of radio communication systems. In the RFID system, a dedicated reading device transmits and receives electromagnetic waves of a predetermined frequency to an information medium that stores identification information and the like, thereby reading the identification information and the like of the information medium in a non-contact manner.

  In recent years, this RFID system has been applied to a key management system. As such a key management system, for example, a loop that attaches a cover having an information medium to the key body to be managed, emits electromagnetic waves to the information medium on the side wall of the key management cabinet, and communicates with the information medium There has been proposed a key management device for managing a key accommodated in a key storage based on identification information of an information medium attached with an antenna and read via a loop antenna (see Patent Document 1).

JP 2001-182388 A

  By the way, when a metal member is interposed between the information medium and the loop antenna, electromagnetic waves from the loop antenna are blocked, and communication processing cannot be accurately performed between the information medium and the loop antenna. The key is generally made of metal. For this reason, in the key management device described in Patent Document 1, the key must be accommodated in the key storage so that the key is not located between the information media and between the information media and the loop antenna. There is a problem that the arrangement of the keys in the storage and the shape of the keys to be stored must be restricted, which is not suitable for managing keys of various shapes.

  The present invention has been made in view of the above, and an object of the present invention is to provide a key management system capable of accurately managing a large number of keys regardless of the shape and arrangement of the keys.

  In order to solve the above-described problems and achieve the object, a key management system according to the present invention includes a memory that stores predetermined identification information and a coil for an antenna that transmits the identification information to an external device. In a key management system provided with a contact information medium and managing a key stored in a key storage, a through hole around which a lead wire that holds a part of the key and forms the coil is wound is held. A holding member provided and a ring for bundling a key held by the holding member by being inserted into a through hole of the holding member, the communication coil performing communication with the non-contact information medium; A ring having a ring-side connection means that is connected to the communication coil and electrically connected to the outside; a hanger from which the ring is removable; and a predetermined communication connection line; and the communication connection line A hanger comprising a hanger-side connection means connected to the ring-side connection means and electrically connected to the ring-side connection means; and a communication coil for a ring attached to the hanger by connecting to a communication connection line of the hanger And a reader for reading identification information from a non-contact information medium of a key bundled in the ring using the connected communication coil, and the identification information of the non-contact information medium read by the reader is also included. And managing the key.

  Further, in the key management system according to the present invention, when the ring is inserted into the through hole of the holding member and bundles the holding member, a lead wire forming a communication coil of the ring and a coil of the holding member are formed. The conducting wire is characterized in that it is wound so as to be positioned substantially on a concentric circle.

  In the key management system according to the present invention, the reader controls the communication process of the communication coil of the ring to read the identification information of the non-contact information medium of the key, and the control process of the control means Processing means for processing the identification information of the non-contact information medium of the key read by the means, output means for outputting the processing result by the processing means, and the key storage created based on the processing result by the processing means Storage means for storing key storage information in the cabinet.

  In the key management system according to the present invention, the holding member is a cover member that accommodates a part of the key.

  The key management system according to the present invention is characterized in that the holding member is a binding band capable of binding the key.

  In the key management system according to the present invention, in the binding band, a part of the conducting wire forming the coil is extended to the band portion, and the processing means communicates with the non-contact information medium of the binding band and the communication When it is impossible to communicate with the coil for use, it is determined that the key held in the binding band may be removed, and the output means outputs the determination result of the processing means. And

  In the key management system according to the present invention, the coil includes a plurality of subcoils whose winding directions overlap each other, and a part of the conducting wire forming at least one subcoil of the plurality of subcoils extends to a band portion. It is characterized by being.

  The key management system according to the present invention is characterized in that the ring side connection means of the ring and the hanger side connection means of the hanger are formed of a coil member.

  According to the present invention, the conductive wire forming the coil of the non-contact information medium is wound around the through hole of the holding member that holds a part of the key, and is held by being inserted into the through hole of the holding member. Since the ring for bundling the key held by the member is provided with a communication coil for communication with the non-contact information medium, the ring communication coil and the key coil bundled with this ring are close to each other. Can be communicated in this state, so a large number of keys can be accurately obtained regardless of the shape and arrangement of the keys by simply mounting the ring with the holding members holding the keys on the hanger and storing it in the key storage. Can manage.

FIG. 1 is a schematic diagram of a key management system according to the first embodiment. FIG. 2 is a diagram for explaining the configuration of the key management system shown in FIG. FIG. 3 is a front view of the key shown in FIG. FIG. 4 is a left side view of the key shown in FIG. FIG. 5 is a front view of the key shown in FIG. 6 is an exploded view of each member of the key shown in FIG. FIG. 7 is a plan view of the ring shown in FIG. FIG. 8 is a plan view for explaining a case where the key shown in FIG. 2 is bundled with the ring shown in FIG. FIG. 9 is a left side view of FIG. FIG. 10 is a diagram for explaining a case where the ring in which the keys shown in FIG. 2 are bundled is attached to the hanger shown in FIG. FIG. 11 is a flowchart showing a processing procedure of management processing of the key management system shown in FIG. FIG. 12 is a diagram showing an example of a menu screen displayed on the monitor shown in FIG. FIG. 13 is a diagram showing an example of a menu screen displayed on the monitor shown in FIG. FIG. 14 is a diagram for explaining the configuration of the key management system according to the second embodiment. 15 is a plan view of the binding band shown in FIG. FIG. 16 is a front view of the binding band shown in FIG. FIG. 17 is a plan view of the binding band shown in FIG. 18 is a plan view for explaining a case where the binding band shown in FIG. 15 is bundled with the ring shown in FIG. FIG. 19 is a left side view of FIG. FIG. 20 is a flowchart showing a processing procedure of management processing of the key management system shown in FIG. FIG. 21 is a diagram for explaining the configuration of the key management system according to the third embodiment. FIG. 22 is a plan view of the binding band shown in FIG. FIG. 23 is a front view of the binding band shown in FIG. FIG. 24 is a diagram for explaining a case where the ring in which the binding band shown in FIG. 21 is bundled is attached to the hanger shown in FIG. FIG. 25 is a flowchart showing a processing procedure of management processing of the key management system shown in FIG. 26 is a diagram showing an example of a menu screen displayed on the monitor shown in FIG. FIG. 27 is a plan view showing another example of a binding band used in the third embodiment. FIG. 28 is a front view of the binding band shown in FIG. FIG. 29 is a plan view showing another example of a binding band used in the third embodiment. FIG. 30 is a front view showing another example of a binding band used in the third embodiment. FIG. 31 is a diagram for explaining another configuration of the key management system according to the first embodiment. FIG. 32 is a front view showing another example of the key shown in FIG. FIG. 33 is a front view showing another example of the key shown in FIG.

  Hereinafter, a key management system according to an embodiment of the present invention will be described by taking a key management system that manages keys using an RFID system as an example. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same parts are denoted by the same reference numerals.

(Embodiment 1)
First, the first embodiment will be described. FIG. 1 is a schematic diagram of a key management system according to the first embodiment. As shown in FIG. 1, in the key management system according to the first embodiment, a plurality of rings 20 in which keys 10 are bundled are attached to each hanger 4 housed in each drawer 3 of the key storage 2. A large number of keys 10 are stored in the key storage 2. Each hanger 4 can be detached from each drawer 3 as indicated by an arrow Y1. As for each hanger 4, the ring 20 can be attached or detached like arrow Y2. The key 10 is provided with a non-contact information medium including a memory for storing predetermined identification information and an antenna coil for transmitting the identification information to an external device. The key storage 2 is provided with a reader 30 that reads the identification information of the non-contact information medium of each key 10. The reader 30 manages the keys 10 stored in the key storage 2 based on the read identification information of each non-contact information medium. The reader 30 outputs storage information of each key 10 from the speaker 34a to be connected, and also outputs storage information to the management device 50 to be connected. The management device 50 processes the storage information output from the reader 30 by the management device main body 51a according to the instruction information input via the keyboard 52a and the mouse 52b, and displays and outputs the storage information from the monitor 54a.

  Next, the configuration of the key management system shown in FIG. 1 will be described. FIG. 2 is a diagram for explaining the configuration of the key management system shown in FIG. As shown in FIG. 2, the key management system 1 according to the first embodiment includes each hanger 4 accommodated in the key storage 2, a reader 30, and a management device 50, and is bundled on each ring 20. The plurality of keys 10 stored in the hanger 4 in the state of being managed are managed.

  The hanger 4 includes a communication connection line 36 formed of a conductive wire and a power supply coil 39 that is connected to the communication connection line 36 and can be electrically connected to a coupling coil 23 of the ring 20 described later. The hanger 4 is connected to the reader 30 and the communication connection line 36 by connector connection with the cable 38 of the reader 30 and the connecting portion 37 shown in the C2 portion. The hanger 4 is accommodated in the hanger accommodating position of the drawer 3 and is electrically connected to the cable 38 by setting the connection part 37 of the hanger 4 to the connection part of the cable 38. Then, the hanger 4 is taken out from the drawer 3 and the connection portion 37 is disconnected from the cable 38 to release the connection with the cable 38.

  The ring 20 includes a key communication coil that performs communication with a non-contact information medium provided in the key 10. This key communication coil is connected to the communication connection line 36 provided on the hanger 4 at the C1 portion when the hanger 4 is mounted.

  The reader 30 is connected to the key communication coil of the ring 20 attached to the hanger 4 by the cable 38 being electrically connected to the communication connection line 36 of the hanger 4 at the connection portion 37. Then, the reader 30 reads the identification information from the non-contact information medium of the key 10 bundled in the ring 20 using the key communication coil of the connected ring 20, and based on the read identification information of the non-contact information medium. The keys in the key vault 2 are managed. The reader 30 includes a control unit 31, an input unit 32, a processing unit 33, an output unit 34, and a storage unit 35. The control unit 31 controls the communication processing of the coil for communication of the ring 20 to read the identification information of the non-contact information medium in the key 10 and also controls the processing by each component. The input unit 32 receives each instruction information related to key management in the key storage 2 from the outside. The processing unit 33 processes the identification information of the non-contact information medium of the key 10 read through the communication coil of the ring 20 by the control process by the control unit 31. The output unit 34 includes a speaker 34a, a monitor, and the like, and outputs a processing result by the processing unit 33. The storage unit 35 stores the storage information created based on the processing result of the processing unit 33, that is, the identification information of the non-contact information medium of each key 10 accommodated in the key storage 2, as well as the reader 30. Stores various programs required for the processing executed by.

  The management device 50 is communicably connected to the reader 30 and is configured using a control unit 51 that controls each component of the management device 50, a keyboard 52a, a mouse 52b, and the like. An input unit 52 to be obtained, an output unit 54 configured to use the monitor 54a, a printer, a speaker, and the like to output each piece of information including key information, and each piece of information including key information and processing executed by the management device 50 are required. A storage unit 55 that stores various programs and a communication processing unit 56 that communicates information according to a predetermined format with an external device via a communication network (not shown).

  Next, the key 10 will be described with reference to FIGS. 3 and 5 are front views of the key 10, FIG. 4 is a left side view of the key 10 shown in FIG. 3, and FIG. 6 is an exploded view of the key 10.

  As shown in FIGS. 3 to 6, the key 10 has a key cover 12 attached to each key body 11, and the key cover 12 holds the key body 11 by accommodating the upper part of the key body 11 inside. To do. As shown in FIGS. 4 and 6, the key cover 12 is formed by fitting the lower surface cover 12a and the upper surface cover 12b with the head portion of the key body 11 set in the recess 12c of the lower surface cover 12a. A part of the key body 11 is held in the key cover 12.

  As shown in FIG. 5, the key cover 12 includes a key side coil 14 that functions as an antenna and is formed by a conductive wire, an IC chip 15 that stores identification information, and a capacitor 16 that forms a resonance circuit with the key side coil 14. A non-contact information medium 17 is provided. The IC chip 15 includes a transmission / reception unit 15a that processes information transmitted to and received from the reader 30 via the key-side coil 14, a control unit 15b that controls each component of the IC chip 15, and predetermined identification information. And a memory 15c for storing. The capacitance of the capacitor 16 forming the resonance circuit and the inductance of the key-side coil 14 are set so that the frequency of the electromagnetic wave by the reader 30 matches the resonance frequency of the resonance circuit. 3, 4, 6, and 8 and subsequent figures, the non-contact information medium 17 is illustrated without the capacitor 16.

  As shown in FIG. 4, the key cover 12 is provided with a through hole 13 that penetrates the lower surface cover 12a and the upper surface cover 12b. As shown in FIG. 6, a cylindrical convex portion 12d is provided in the lower surface cover 12a to form the through hole 13, and a conducting wire is wound around the cylindrical convex portion 12d. Thus, the key side coil 14 is formed around the through hole 13. The inner diameter of the through hole 13 is 6 mm, for example, and the coil of the non-contact information medium 17 is formed by winding the conductive wire around the through hole 13, for example, 13 times. The thickness of the key cover 12 is, for example, 3 mm.

  Next, the ring 20 that bundles the keys 10 will be described. 7 is a plan view of the ring 20, FIG. 8 is a plan view for explaining a case where the key 10 is bundled with the ring 20, FIG. 9 is a left side view of FIG. 8, and FIG. It is a figure explaining the case where the ring 20 which bundled the key 10 is mounted | worn with the hanger 4. FIG.

  As shown in FIG. 7, the ring 20 has a configuration in which a conducting wire 22 is wound around a ring body 21 having a shape bent to the left and right after the upper portion of a substantially rectangular ring portion is not closed and is extended upward. When this conducting wire is wound around a part of the ring portion of the ring body 21, a key communication coil 24 that communicates with the non-contact information medium 17 is formed on the ring 20. For the sake of explanation, as shown in FIGS. 7 and 8, a portion of the ring body 21 where the key communication coil 24 is formed and which holds the key cover 12 of the key 10 is a holding portion 21a. The portions where the end portions of the ring portions extend upward are referred to as shaft portions 21b and 21c, and the portions from the shaft portions 21b and 21c to the end portions are bent to the end portions as insertion portions 21d and 21e.

  The ring 20 is inserted into the through hole 13 of the key 10 from the end of the ring main body 21, whereby the key cover 12 holding the key 10 is attached to the key communication coil 24 as shown in FIGS. 8 and 9. It is bundled and held by the formed holding portion 21a.

  A key side coil 14 is formed around the through hole 13 of the key cover 12, and a key communication coil 24 is formed on the holding portion 21 a of the ring body 21 of the ring 20. Therefore, as shown in FIGS. 8 and 9, when the ring 20 is inserted through the through hole 13 of the key cover 12 and the key 10 is bundled and held, the lead wire forming the key communication coil 24 of the ring 20. And the lead wire forming the key side coil 14 of the key 10 are wound so as to be positioned substantially concentrically. Furthermore, as shown in FIG. 9, the key communication coil 24 of the ring 20 is positioned substantially concentrically with the key side coil 14 inside the key side coil 14 of the key 10.

  As shown in FIGS. 7 and 8, the lead wire of the key communication coil 24 wound around the holding portion 21 a of the ring body 21 extends from both ends of the key communication coil 24. The two conducting wires 22 extend to one insertion portion 21d of the ring body 21 and are wound around the insertion portion 21d. As a result, a coupling coil 23 that is electrically connected to a power feeding coil 39 of the rehanger 4 described later is formed in the insertion portion 21d of the ring 20.

  The hanger 4 is provided with a plurality of sets of insertion ports, and the ring 20 has insertion portions 21d and 21e inserted into predetermined insertion ports 4a and 4b of the hanger 4 as shown in FIG. Is attached to the hanger 4. In order to attach the ring 20 in which the used key 10 is bundled to the hanger 4, the key user inserts the insertion portions 21d and 21e with the shaft portions 21b and 21c pressed against each other as indicated by an arrow Y4 in FIG. Can be brought close to the entrances of the insertion openings 4a and 4b of the hanger 4, and then the hands can be released from the shaft portions 21b and 21c. Since there is no force to press the shaft portions 21b and 21c, the insertion portions 21d and 21e are inserted into the insertion ports 4a and 4b of the hanger 4 by the reaction, and the ring 20 is attached to the hanger 4. When removing the ring 20 from the hanger 4, the key user only needs to take out the insertion portions 21 d and 21 e from the insertion openings 4 a and 4 b while picking the shaft portions 21 b and 21 c of the desired ring 20.

  And as shown in FIG. 10, the hanger 4 is the communication connection line 36 formed with the conducting wire, Comprising: The communication connection line 36 extended | stretched from the connection part 37 which can be connector-connected with an external cable is incorporated. Furthermore, a power supply coil 39 around which a conductive wire forming the communication connection line 36 is wound is formed around one of the insertion ports of the hanger 4. The power supply coil 39 is formed for each insertion port of each group, and the periphery of at least one insertion port of each group corresponding to the coupling coil 23 formed in one insertion part 21d of the ring 20. Formed.

  The power supply coil 39 is transformer-coupled to the coupling coil 23 of the ring 20 inserted into the insertion port 4a. That is, when an alternating current supplied from the cable 38 flows through the connection portion 37 to the power supply coil 39, a magnetic field is generated in the power supply coil 39, and the coupling coil of the ring 20 that couples this magnetic field with mutual inductance. 23 is converted into a current, and the current flows through the coupling coil 23. As a result, in the ring 20, a current flows from the coupling coil 23 to the key communication coil 24 through the conductive wire 22.

  As shown in FIGS. 8 to 10, when a current flows through the key communication coil 24 of the ring 20, the resonance circuit of the non-contact information medium 17 of each key 10 bundled in the ring 20 also resonates, An induced current flows through the key side coil 14. As a result, the IC chip 15 operates, and the identification information stored in the memory 15 c is transmitted to the key communication coil 24 of the ring 20 through the key side coil 14. The identification information of each key 10 transmitted to the key communication coil 24 is output to the power supply coil 39 via the coupling coil 23, and then connected to the cable 38 from the connection portion 37 to which the communication connection line 36 is connected. To the processing unit 33 of the reader 30 main body. The processing unit 33 manages each key 10 based on the identification information.

  As described above, in the key management system 1 according to the first embodiment, the key side coil 14 is formed around the through hole 13 of the key 10, and the key communication coil is formed on the holding portion 21 a of the ring body 21 of the ring 20. 24 is formed. When the ring 20 is inserted into the through hole 13 of the key 10 and bundled and held, the lead wire forming the key communication coil 24 of the ring 20 and the lead wire forming the key side coil 14 of the key 10. Are located on a concentric circle. Here, the inner diameter of the through hole 13 of the key 10 is 6 mm, for example, and is small enough to allow the ring body 21 of the ring 20 to be inserted. For this reason, when the ring 20 is inserted into the through hole 13, the key communication coil 24 of the ring 20 and the key side coil 14 of the key 10 bundled with the ring 20 are very close to each other.

  Therefore, a metal key body 11 having a thickness of about 3 mm between the key communication coil 24 of the ring 20 and the key side coil 14 of the non-contact information medium 17 provided in the key 10 bundled in the ring 20. There are no gaps. That is, in the first embodiment, a metal member cannot intervene between the key side coil 14 of the non-contact information medium 17 and the key communication coil 24 of the ring 20. As a result, in the first embodiment, the electromagnetic wave from the key communication coil 24 is not blocked by the metal member, and the communication process is accurately performed between the non-contact information medium 17 and the key communication coil 24 of the ring 20. It can be performed. For this reason, in the first embodiment, as long as a part of the key body 11 is accommodated in the key cover 12, the key shape can be obtained only by accommodating the key 10 in the ring 20 in the state where the key 10 is bundled. Regardless of this, a large number of keys can be managed in a freely arranged state.

  Furthermore, compared with the conventional case where a loop antenna is attached to the side wall of the key management cabinet to communicate with the non-contact information medium of each key, the key communication coil 24 of the ring 20 and the key 10 bundled with the ring 20 Since the key-side coil 14 is positioned very close to each other in a substantially concentric manner, the non-contact information medium 17 of the key 10 and the reader 30 can communicate very efficiently.

  Next, management processing of the key management system 1 shown in FIG. 2 will be described with reference to FIG. FIG. 11 is a flowchart showing a processing procedure of management processing of the key management system 1 shown in FIG. As shown in FIG. 11, in the key management system 1, after the reader 30 is turned on, the control unit 31 determines whether or not it is the reading timing of the key information of the key stored in the key storage 2 ( Step S2). For example, when the reader 30 is turned on, when instruction information for instructing reading of key information is input from the input unit 32, or when the reading process is regularly determined every predetermined time in advance, When a predetermined time has elapsed from the reading process, when it is determined that the hanger 4 is newly accommodated in the key storage 2 based on the connection state of each cable 38 with the connection portion 37, or the power of the reader 30 is turned on When the instruction information to be turned off is input, the control unit 31 determines that it is the key information reading timing.

  The control unit 31 repeats the determination process of step S2 until determining that it is the reading timing of the key information. If the control unit 31 determines that it is the reading timing of the key information (step S2: Yes), the control unit 31 sets the hanger 4 to be read processing target. A current is supplied through the cable 38 (step S4). As a result, a current is supplied to the communication connection line 36 of the hanger 4, and a current also flows through each power feeding coil 39. When the ring 20 is attached to the insertion ports 4a and 4b of the hanger 4, a current is supplied from the coupling coil 23 of the ring 20 that is transformer-coupled to the power supply coil 39 of the insertion port 4a to the key communication coil 24. Flows. As a result, communication is performed between the key communication coil 24 and the non-contact information medium 17 of each key 10 bundled in the ring 20, and the reader 30 communicates with the hanger 4 via the key communication coil 24. A reading process for reading the identification information of the non-contact information medium 17 of the key 10 of each attached ring 20 is performed (step S6). The control unit 31 receives the identification information of the non-contact information medium 17 provided in the key 10 of each ring 20 attached to the hanger 4 to be read, which is read by the reading process, as key information (step S8). The key information is output to the processing unit 33, and the reading process in the hanger 4 is terminated. In addition, the hanger 4 to be read is instructed by the instruction information from the input unit 32, and the hanger 4 newly accommodated in the key storage 2 or the hanger 4 that has been determined to have come in the reading order is to be read. Set as

  Subsequently, the control unit 31 determines whether or not the reading processes by all the reading process hangers have been completed (step S10), and determines that the reading processes by all the reading process hangers 4 have not been completed. If this is the case (step S10: No), a current is supplied to the next hanger 4 to be read (step S12), and the reading process by the next hanger 4 to be read is performed.

  On the other hand, when the control unit 31 determines that the reading process by all the reading process hangers 4 has ended (step S10: Yes), the storage information stored in the storage unit 35 is referred to (step S14). ). For example, the storage information includes, for each hanger, the identification information of the non-contact information medium 17 of the key 10 bundled with each ring 20 attached to the hanger 4 and the lock location of each key 10. It is.

  Then, the processing unit 33 compares the key information by all the hangers 4 that have performed the reading processing with the referenced storage information (step S16), and the identification information included in the key information and the identification information included in the storage information Among them, identification information that is inconsistent is acquired (step S18). When there is identification information that is not included in the storage information in the key information of all the hangers 4 that have performed the reading process, the processing unit 33 newly adds the key 10 corresponding to this identification information to the key information. It is determined that it is accommodated in the vault 2. In addition, when the identification information of the storage information includes identification information that is not included in the key information of all the hangers 4 that have performed the reading process, the processing unit 33 stores the key 10 corresponding to the identification information. It is determined that the key storage 2 is taken out. Based on this determination processing, the processing unit 33 acquires new storage information of the key 10 that is actually stored in the key storage 2 (step S20).

  Subsequently, the output unit 34 performs an output process for outputting new storage information acquired by the processing unit 33 (step S22). For example, as this output process, information on the key 10 newly stored in the key storage 2 and information on the key taken out from the key storage 2 are output from the speaker 34a by voice. Further, as output processing, the detailed information of the key 10 newly stored in the key storage 2 by displaying the menu screen M1 of FIG. 12 on the monitor 54a connected to the reader 30 via the management apparatus main body 51a and In addition to outputting the storage position, detailed information of the key 10 taken out from the key storage 2 may be output by displaying the menu screen M2 of FIG.

  Next, the control unit 31 updates the storage information stored in the storage unit 35 with new storage information acquired by the processing unit 33 (step S24). The control unit 31 determines whether or not to end the storage process in the key storage 2 (step S26). For example, the control unit 31 determines to end the storage process in the key storage 2 when instruction information for turning off the power of the reader 30 is input. When it is determined that the storage process is to be ended (step S26: Yes), the control unit 31 ends the key management process. If the control unit 31 determines that the storage process is not to be ended (step S26: No), the control unit 31 returns to step S2 and determines whether or not it is the reading timing of the key information of the key stored in the key storage 2. If it is determined that it is the reading timing (step S2: Yes), the key management is continued by performing the above-described series of processing operations.

  As described above, in the first embodiment, since the communication process can be accurately performed between the non-contact information medium 17 and the key communication coil 24 of the ring 20, a series of processing operations shown in FIG. 11 is performed. As a result, the key 10 stored in the key storage 2 can be accurately managed.

  Further, in the first embodiment, by combining with the entrance / exit management system, who has taken out which key 10 from the key storage 2 via the management device 50 connected to the network, or who has which key It may be managed whether 10 is returned to the key storage 2. Further, in this case, when a person who does not have the authority to use the key takes out the key from the key vault 2, an alarm is generated and the room where the key vault 2 is installed is locked, and the key 10 It may be prevented from being illegally taken outside.

(Embodiment 2)
Next, a second embodiment will be described. FIG. 14 is a diagram for explaining the configuration of the key management system according to the second embodiment. As shown in FIG. 14, in the key management system 201 according to the second embodiment, in addition to the key cover 12 described in the first embodiment, a binding band 210 provided with a non-contact information medium is described in the claims. It is used as a holding member. In the key management system 201, in addition to the key 10 held by the key cover 12, a binding band in which the key 11 a or the card key 11 b is bound is bundled with the ring 20, and each ring 20 is attached to the hanger 4, The key 10, the key 11a, and the card key 11b are stored in the key storage 2.

  The key management system 201 shown in FIG. 14 includes a reader 230 that reads the identification information of the non-contact information medium of the key 10 and the identification information of the non-contact information medium of the binding band 210 in place of the reader 30 shown in FIG. . Compared with the reader 30 shown in FIG. 2, the reader 230 replaces the processing unit 33 with the identification information of the non-contact information medium of the key 10 read via the communication coil of the ring 20 and the non-binding band 210. A processing unit 233 for processing the identification information of the contact information medium is provided. The storage unit 35 stores each key 10 created based on the identification information of the non-contact information medium of each binding band 210 accommodated in the key storage 2 and the identification information of the non-contact information medium of each key 10. 11a and card key 11b are stored.

  Next, the binding band 210 shown in FIG. 14 will be described in detail. 15 and 17 are plan views of the binding band shown in FIG. 14, and FIG. 16 is a front view of the binding band shown in FIG.

  As shown in FIGS. 15 to 17, the binding band 210 includes a band portion 211 that is passed through the hole of each key 11 a or the card key 11 b and a head portion 212, and is made of a flexible resin material or the like. For example, it is formed by integral molding. The head part 212 is provided with a band lock hole 218 through which the band part 211 is passed and locked.

  The binding band 210 has a non-contact information medium 217 in the head portion 212. As shown in FIG. 17, the non-contact information medium 217 includes a band side coil 214 that functions as an antenna and is formed of a conductive wire, an IC chip 15, and a capacitor 216 that forms a resonance circuit with the band side coil 214. . The capacitance of the capacitor 216 forming the resonance circuit and the inductance of the band-side coil 214 are set so that the frequency of the electromagnetic wave by the reader 230 matches the resonance frequency of the resonance circuit. In FIG. 15, FIG. 16, FIG. 18 and the subsequent figures, the non-contact information medium 217 is illustrated with the capacitor 216 omitted.

  The binding band 210 is provided with a ring through hole 213 through which the ring 20 is inserted in the head portion 212. As shown in FIGS. 15 to 17, a conductive wire forming the band side coil 214 is wound around the ring through hole 213.

  As shown in FIGS. 18 and 19, the binding band 210 passes the key 11 a or the card key 11 b to be stored through the band portion 211, and then locks the band 11 into the band lock hole 218 through the band portion 211. Alternatively, the card key 11b is held. When the band part 211 is locked through the band lock hole 218, the band part 211 cannot be taken out from the band lock hole 218. Therefore, each key 11a or card key to be held unless the band part 211 is cut. 11b cannot be removed from the binding band 210.

  Then, by inserting the ring main body 21 of the ring 20 into the ring through hole 213 of the binding band 210 that holds the key 11a or the card key 11b, as shown in FIG. 18 and FIG. Alternatively, the binding band 210 holding the card key 11b is bundled and held by a ring portion where the key communication coil 24 is formed.

  Even when the binding band 210 holding the key 11a or the card key 11b is bundled with the ring 20, the ring 20 is inserted into the ring through hole 213 and the binding band 210 is bundled as shown in FIGS. In this case, the lead wire forming the key communication coil 24 of the ring 20 and the lead wire forming the band side coil 214 of the binding band 210 are wound so as to be positioned substantially concentrically. . The key communication coil 24 of the ring 20 is positioned substantially concentrically with the band side coil 214 inside the band side coil 214 of the binding band 210.

  Therefore, when the ring 20 is inserted into the ring through hole 213, the key communication coil 24 of the ring 20 and the band side coil 214 of the binding band 210 bundled with the ring 20 are very close to each other. Become. Therefore, even when the binding band 210 is used, similarly to the first embodiment, the key communication coil 24 of the ring 20 and the band-side coil 214 of the non-contact information medium 217 provided in the binding band 210 bundled with the ring 20. Therefore, it is not possible for a metal member to intervene between the non-contact information medium 217 and the key communication coil 24 of the ring 20. The contact information medium 217 and the reader 30 can communicate very efficiently.

  In the second embodiment, even if the key cover 12 described in the first embodiment cannot be directly attached to the key body, it can be managed by using the binding band 210. Compared to 1, the degree of freedom of key management is further increased.

  Next, the management processing of the key management system 201 shown in FIG. 14 will be described with reference to FIG. FIG. 20 is a flowchart showing a processing procedure of management processing of the key management system 201 shown in FIG.

  As shown in FIG. 20, in the key management system 201, as in steps S <b> 2 to S <b> 4 shown in FIG. 11, the control unit 31 stores the key information of the key 10 stored in the key storage 2 and the binding band 210. It is determined whether or not it is the reading timing of the band information (step S202). The control unit 31 repeats the determination process of step S202 until determining that it is the reading timing of the key information and band information, and if it is determined that it is the reading timing of the key information and band information (step S202: Yes), the reading is performed. A current is supplied to the hanger 4 to be processed through the cable 38 (step S204). As a result, as in the first embodiment, current is supplied to each communication connection line 36 of the hanger 4, and current also flows to each power supply coil 39. When the ring 20 is attached to the insertion ports 4 a and 4 b of the hanger 4, a current flows from the power supply coil 39 of the insertion port 4 a to the key communication coil 24 via the coupling coil 23 of the ring 20. . Then, communication is performed between the non-contact information medium 217 of each binding band 210 and the non-contact information medium 17 of each key 10 bundled in the key communication coil 24 and the ring 20, so that the reader 230 has this A reading process for reading the identification information of the non-contact information medium 217 provided in the binding band 210 of each ring 20 attached to the hanger 4 and the identification information of the non-contact information medium 17 provided in the key 10 is performed (step S206).

  The control unit 31 receives the identification information of the non-contact information medium 17 included in the key 10 of each ring 20 attached to the hanger 4 to be read, which is read by the reading process, as key information and binds the rings 20 together. The identification information of the non-contact information medium 217 provided in the band 210 is received as band information (step S208), the received key information and band information are output to the processing unit 233, and the reading process in the hanger 4 is terminated.

  Subsequently, as in Steps S10 to S12 of FIG. 11, the control unit 31 determines whether or not the reading process by all the reading process hangers has been completed (Step S210), and all the reading process target objects are determined. If it is determined that the reading process by the hanger has not ended (step S210: No), a current is supplied to the next reading process target hanger 4 (step S212), and the reading process by the next reading process target hanger 4 is performed. Do.

  On the other hand, when the control unit 31 determines that all the reading processing hangers have been read (step S210: Yes), the storage information stored in the storage unit 35 is referred to (step S214). . This storage information includes, for example, for each hanger 4, identification information of the non-contact information medium 17 of the key 10 bundled with each ring 20 attached to the hanger 4 and identification information of the non-contact information medium 217 of the binding band 210. The key 10, 11a and the lock location of each card key 11b are associated with each other.

  Then, the processing unit 233 compares the key information and band information by all the hangers 4 that have performed the reading process with the referenced storage information (step S216), and stores the identification information included in the key information and band information and the storage Among the identification information included in the information, identification information that does not match is acquired (step S218). Then, if there is identification information that is not included in the stored information in the key information and the band information by all the hangers 4 that have performed the reading process, the processing unit 233 performs the key 10 or binding corresponding to the identification information. It is determined that the band 210 is newly accommodated in the key storage 2. In addition, when the identification information of the storage information includes identification information that is not included in the key information and band information by all the hangers 4 that have performed the reading process, the processing unit 233 responds to the identification information. It is determined that the key 10 or the binding band 210 has been taken out from the key storage 2. Based on this determination process, the processing unit 233 acquires new storage information of the keys 10 and 11a and the card keys 11b that are actually stored in the key storage 2 (step S220).

  Subsequently, the output unit 34 performs an output process of outputting new storage information acquired by the processing unit 233, similarly to step S22 illustrated in FIG. 11 (step S222). The control unit 31 updates the storage information stored in the storage unit 35 to the new storage information acquired by the processing unit 233 (step S224), and determines whether or not to end the storage process in the key storage 2 ( Step S226). When it is determined that the storage process is to be ended (step S226: Yes), the control unit 31 ends the key management process. If the control unit 31 determines not to end the storage process (step S226: No), the control unit 31 returns to step S202, performs the above-described series of processing operations, and continues key management.

  As described above, in the second embodiment, communication processing can be accurately performed between the non-contact information medium 17 of the key 10 and the non-contact information medium 217 of the binding band 210 and the key communication coil 24 of the ring 20. Therefore, by performing a series of processing operations shown in FIG. 20, each key 10, 11a and card key 11b stored in the key storage 2 can be accurately managed.

(Embodiment 3)
Next, Embodiment 3 will be described. In the third embodiment, a key management system that uses a binding band as a key holding member and can detect unauthorized removal of a key due to the cutting of the binding band will be described.

  FIG. 21 is a diagram for explaining the configuration of the key management system according to the third embodiment. As shown in FIG. 21, in the key management system 301 according to the third embodiment, a key 11 a or a card key 11 b is held using a binding band 310 and each key is stored in the key storage 2. Similar to the binding band 210, the binding band 310 has a non-contact information medium. Then, in the key management system 301 shown in FIG. 21, instead of the reader 30 shown in FIG. 2, the identification information of the non-contact information medium of the binding band 310 is read, and the illegality of the key 11a and the card key 11b from the binding band 310 is read. A reader 330 for detecting removal is provided. The reader 330 processes the identification information of the non-contact information medium of the binding band 310 read through the key communication coil of the ring 20 and includes a processing unit 333. The storage unit 35 stores storage information of each key 11 a and card key 11 b created based on the identification information of the non-contact information medium of each binding band 310 accommodated in the key storage 2. Further, for each ring 20, the storage unit 35 also stores a combination of identification information corresponding to the key 11a or the card key 11b bundled in the ring 20. This combination is created in advance by reading the identification information by the non-contact information medium of the binding band 310 bundled in each ring 20.

  Next, the binding band 310 shown in FIG. 21 will be described in detail. 22 is a plan view of the binding band 310 shown in FIG. 21, and FIG. 23 is a front view of the binding band shown in FIG.

  As shown in FIGS. 22 and 23, the binding band 310 has a non-contact information medium 317 in the head portion 312. The non-contact information medium 317 includes a band-side coil 314 that functions as an antenna and is formed by a conductive wire, an IC chip 15, and a capacitor (not shown) that forms a resonance circuit with the band-side coil 314. The band side coil 314 is formed by winding a conducting wire around the ring through hole 213 of the head portion 312.

  A part of the conducting wire forming the band side coil 314 is extended to the band portion 311, and an inductance of the band side coil 314 including the extension portion 314 e and a resonance circuit with the band side coil 314 are formed. The capacitance of the capacitor is set so that the frequency of the electromagnetic wave by the reader 330 matches the resonance frequency of the resonance circuit.

  That is, the band-side coil 314 exhibits the inductance as set when the normal shape including the extending portion 314e is maintained as shown in FIGS. Therefore, like the binding band 310b shown in FIG. 24, when the band portion 311 is not damaged, the resonance frequency of the non-contact information medium 317 of the binding band 310b matches the frequency of the electromagnetic wave by the reader 330, As indicated by the arrow Y35, communication processing can be normally performed between the key communication coil 24 and the non-contact information medium 317.

  On the other hand, when a part S1 of the band portion 311 is cut as in the binding band 310a of FIG. 24, the conductive wire constituting the extended portion 314e of the 314 extended to the band portion 311 is also cut. End up. In other words, a part of the conducting wire forming the band side coil 314 is disconnected. As a result, the non-contact information medium 317 of the binding band 310a cannot perform communication processing with the key communication coil 24 as indicated by the arrow Y36.

  Usually, when the band portion 311 of the binding band 310 is cut for a valid reason and the key 11a or the card key 11b is removed, the fact is registered in the key management system 301 by the key manager, and based on this. Key storage information is updated. On the other hand, when the key 11a or the card key 11b is removed from the binding band 310 for an illegal reason, the registration itself to the key management system 301 is not performed. Therefore, the key management system 301 uses the binding band 310 that cannot communicate with the reader 330 when the band unit 311 is disconnected, and stores the band information read from each binding band 310 and the storage unit 35. By comparing the stored information with the stored information, it is detected whether or not the key is illegally removed by cutting the band portion 311 from the binding band 310 newly stored in the key storage 2.

  Therefore, the management process in the key management system 301 will be described in detail. FIG. 25 is a flowchart showing a processing procedure of management processing of the key management system 301 shown in FIG. In FIG. 25, when the ring 20 is newly attached to the hanger 4 in the key storage 2 and accommodated in the key storage 2, or the ring 20 is removed from the hanger 4 taken out from the key storage 2. The management process of the key management system 301 when it is removed will be described.

  As shown in FIG. 25, in the key management system 301, as in step S <b> 202 shown in FIG. 20, the control unit 31 determines whether it is the reading timing of the band information of the binding band 310 stored in the key storage 2. The determination process of step S302 is repeated until it is determined (step S302) and it is determined that it is the reading timing of the band information. In step S <b> 302 in FIG. 21, the control unit 31 performs band information on the binding band 310 when the hanger 4 is returned to the drawer 3 after the hanger 4 is taken out from the drawer 3 of the key storage 2. It is determined that it is time to read.

  When it is determined that it is the reading timing of the band information (step S202: Yes), the control unit 31 supplies current to the hanger 4 to be read through the cable 38 as in step S204 illustrated in FIG. (Step S304). As a result, as in the first embodiment, current is supplied to each communication connection line 36 of the hanger 4, and current also flows to each power supply coil 39. When the ring 20 is attached to the insertion ports 4 a and 4 b of the hanger 4, a current flows from the power supply coil 39 of the insertion port 4 a to the key communication coil 24 through the coupling coil 23 of the ring 20. Then, communication is performed between the key communication coil 24 and the non-contact information medium 317 of each binding band 310 bundled on the ring 20, so that the reader 330 is connected to the hanger 4. A reading process for reading the identification information of the non-contact information medium 317 provided in the binding band 310 is performed (step S306). As described above, when there is a binding band 310 in which the band portion 311 is cut, communication with the binding band 310 cannot be performed, and the identification information of the binding band 310 cannot be read.

  The control unit 31 receives the identification information of the binding band 310 of each ring 20 attached to the hanger 4 to be read, which is read by the reading process, as band information (step S308), and the received band information is the processing unit 333. And the reading process in the hanger 4 is terminated.

  Subsequently, similarly to Step S210 to Step S212 in FIG. 20, the control unit 31 determines whether or not the reading process by all the reading process hangers has been completed (Step S310), and all the reading process target objects are determined. If it is determined that the reading process by the hanger has not ended (step S310: No), current is supplied to the hanger 4 that is the next reading process target (step S312), and the reading process by the hanger 4 that is the next reading process target is performed. Do.

  On the other hand, when the control unit 31 determines that the reading process by all the reading process hangers has been completed (step S310: Yes), the storage information stored in the storage unit 35 is referred to (step S314). . In this case, the processing unit 333 also refers to the combination of identification information associated with the key 11 a or the card key 11 b bundled with the ring 20 for each ring 20. The storage information includes, for example, the identification information of the non-contact information medium 317 of the binding band 310 bundled to each ring 20 attached to the hanger 4 and the lock of each key 11a and each card key 11b for each hanger 4. The location is associated with it.

  Then, the processing unit 333 compares the band information of all the hangers 4 that have performed the reading process with the stored information that has been referred to (step S316), and the identification information included in the band information and the identification information included in the storage information It is determined whether or not there is identification information that does not match (step S318). When the hanger 4 is taken out from the drawer 3 and the binding band 310 holding the key 11a or the card key 11b together with the ring 20 is taken out from the hanger 4, or the hanger 4 is taken out from the drawer 3 and this When the binding band 310 holding the key 11a and the like is attached to the hanger 4 together with the ring 20, and when the communication process with each binding band 310 is accurately performed, the binding band 310 is stored in the key storage 2. This is because the binding band 310 varies.

  When the processing unit 333 determines that there is identification information that does not match between the identification information included in the band information and the identification information included in the storage information (step S318: Yes), the information is stored in the key storage 2 This is a case where there is a change in the binding band 310 to be used. Therefore, next, it is determined whether or not the identification information of the binding band 310 fluctuates in units of the ring 20. In the case of fluctuation in units of the ring 20, it is considered that the key 11a or the card key 11b is detached from the key storage 2 together with the ring 20 without unauthorized removal of the key. On the other hand, when the identification information is fluctuating not in units of the ring 20 but in units of the non-contact information medium 317, some binding bands of the ring 20 are attached although the ring 20 is detached from the key storage 2. It is considered that the key 11a and the card key 11b are illegally removed from 310.

  For this reason, the processing unit 333 compares the combination of the identification information of the ring 20 and the key read from the storage unit 35 with the band information read by the reading process, and determines whether there is a combination of identification information that does not match. (Step S319).

  When the processing unit 333 determines that there is no combination of identification information that does not match (step S319: No), it is a case where the identification information varies in units of the ring 20 before and after the reading process. Therefore, since it is considered that the key 11a and the card key 11b are normally stored or taken out from the key storage 2 in the ring 20 unit, it is determined that there is no unauthorized removal of the key (step S320).

  Then, the processing unit 333 determines whether or not there is new band information including identification information that is not included in the storage information in the band information that is the read processing result (step S322). When the processing unit 333 determines that there is new band information including identification information that is not included in the storage information (step S322: Yes), that is, storage information is included in the band information by all the hangers 4 that have performed the reading process. If there is identification information that is not included in, it can be determined that the binding band 310 corresponding to this identification information is newly accommodated in the key vault 2. In this case, the output unit 34 outputs the information on the binding band 310 corresponding to the identification information not included in the storage information as information on the binding band newly stored in the key storage 2 (step S324). On the other hand, when the processing unit 333 determines that there is no new band information including identification information that is not included in the storage information (step S322: No), that is, reading processing is performed in the storage information identification information. If there is identification information that is not included in the band information of all the hangers 4, it can be determined that the binding band 310 corresponding to this identification information has been taken out from the key storage 2. In this case, the output unit 34 outputs the information on the binding band 310 corresponding to the identification information not included in the band information as the information on the binding band extracted from the key storage 2 (step S326).

  On the other hand, when the processing unit 333 determines that there is no discriminating identification information included in the identification information included in the band information and the identification information included in the storage information (step S318: No), the inside of the key storage 2 This is a case where there is no change in the binding band 310 stored in the box. This is a case where the binding band 310 in the key storage 2 has not changed despite the fact that the binding band 310 and the ring 20 are newly attached to the hanger 4. This is a case where the communication processing is not accurately performed between the binding band 310 and the reader 330 stored in (1). Therefore, in this case, there is a possibility that the band portion 311 of the binding band 310 newly stored in the key storage 2 is cut. Therefore, in this case, the processing unit 333 determines that the band unit 311 of each binding band 310 is cut and the key 11a and the card key 11b from the binding band 310 are illegally removed (step S330).

  When the processing unit 333 compares the combination of the ring 20 and key identification information read from the storage unit 35 with the band information read in the reading process, and determines that there is a combination of identification information that does not match. (Step S319: Yes), the identification information does not fluctuate in units of the ring 20 before and after the reading process, and the key 11a and the card key 11b are illegally obtained from some of the binding bands 310 bundled in the ring 20. Therefore, it is determined that the key 11a and the card key 11b from the binding band 310 have been illegally removed (step S330).

  Subsequently, the output unit 34 may determine that the key 11a or the card key 11b is illegally removed from the binding band 310 newly stored in the key storage 2 based on the determination result of the processing unit 333 in step S330. A warning output process for outputting a warning indicating the presence of the warning is performed (step S332). For example, as this warning output process, an alarm sound indicating unauthorized removal of the key 11a or the card key 11b from the binding band 310 is output from the speaker 34a. Further, as a warning output process, a warning for unauthorized removal of the key 11a or the card key 11b from the binding band 310 is displayed by displaying the warning menu screen M3 of FIG. 26 on the monitor 54a of the management device 50 connected to the reader 330. It may be displayed. Thereafter, the control unit 31 determines whether there is an instruction from the input unit 32 based on the instruction information input from the input unit 32 (step S334). For example, there may be a case where an instruction to further display and output details of unauthorized removal or an instruction to output unauthorized removal information from the management device 50 to an external management system via a network may be given. When the control unit 31 repeats the determination process of step S334 until an instruction from the input unit 32 is received and determines whether there is an instruction from the input unit 32 (step S334: Yes), the control unit 31 is based on the instructed content. After performing the processing, the process proceeds to step S336.

  And after each output process shown to step S324, step S326, or step S332 is complete | finished, the control part 31 updates the storage information which the memory | storage part 35 memorize | stores in the new storage information which the process part 333 acquired (step). S326), similarly to step S26 of FIG. 11, the control unit 31 determines whether or not to end the storage process in the key vault 2 (step S340). When it is determined that the storage process is to be ended (step S340: Yes), the control unit 31 ends the key management process. If the control unit 31 determines not to end the storage process (step S340: No), the control unit 31 returns to step S302, performs the above-described series of processing operations, and continues key management. Note that each processing procedure related to the unauthorized removal determination described in FIG. 25 is an example, and various processing procedures are conceivable depending on the normal storage state and the device configuration.

  As described above, in the third embodiment, the same effect as in the first embodiment is obtained, and the binding band 310 shown in FIGS. 22 and 23 is used as a holding member, so that the key 11a by cutting the binding band 310 is obtained. Even the unauthorized removal of the card key 11b can be detected.

  Note that the binding band used in Embodiment 3 only needs to have a configuration in which part of the conductive wire forming the coil of the non-contact information medium extends to the band portion. With reference to FIGS. 27 to 29, another example of the binding band used in the third embodiment will be described. 27 and 29 are plan views schematically showing the binding band used in Embodiment 3, and FIG. 28 is a front view of the binding band shown in FIG. A binding band 3101 shown in FIGS. 27 to 29 includes a plurality of subcoils 314a and 314b as coils constituting the non-contact information medium 317a. Both the subcoils 314a and 314b are formed by winding a conducting wire around the ring through hole 213 of the head portion 312a, and the respective winding directions are overlapped. Of the subcoils 314a and 314b, the IC chip 15 is connected to the subcoil 314a. And a part of conducting wire which forms the subcoil 314b is extended | stretched by the band part 311a. The subcoil 314b is formed so as to overlap directly below the subcoil 314a. Similarly to the subcoil 314a, the subcoil 314b is formed by winding a conducting wire around the ring through hole 213, and thus has substantially the same diameter as the subcoil 314a. In FIG. 27, for the sake of explanation, the diameter of the subcoil 314b is shown larger than the actual diameter.

  The total value of the inductance of the subcoil 314a to which the IC chip 15 is connected and the inductance of the subcoil 314b including the extending portion 3141e depends on the capacitance of the capacitor 316 that forms a resonance circuit with these subcoils 314a and 314b. The frequency of the electromagnetic wave by 330 and the resonance frequency of the resonance circuit are set to coincide. That is, the binding band 3101 exhibits the inductance as set when both of the two subcoils 314a and 314b have a normal shape including the extending portion 3141e, and the non-contact information medium 317a of the binding band 3101 is The communication with the reader 330 becomes possible. On the other hand, when a part of the band part 311a is cut, the conducting wire constituting the extending part 3141e extending to the band part 311a is also cut, and a part of the conducting wire forming the subcoil 314b is cut. It will be cut off. As a result, the total value of the inductance of the subcoil 314a to which the IC chip 15 is connected and the inductance of the subcoil 314b including the extending portion 3141e becomes lower than the inductance set for communication with the reader 330. The contact information medium 317a cannot perform communication processing with the reader 330.

  Therefore, in the third embodiment, even when the binding band 3101 that cannot be communicated by the cutting of the band unit 311a is used, the unauthorized removal of the key due to the cutting of the binding band is detected as in the case of using the binding band 310. can do.

  In addition, as the binding band used in the third embodiment, the binding bands 310 and 3101 incorporating the non-contact information medium have been described as an example. However, the binding band is not limited to this, and includes an extending portion 3141e as illustrated in FIG. It may be a binding band 410 in which a sheet 415 formed inside a non-contact information medium 417 having a band side coil 414 and an IC chip 15 is attached to the back surface of the band member. In this case, the sheet 415 is provided with a ring through hole 413 so as to correspond to the ring through hole 213 of the head portion 412 of the band member, and by winding a conducting wire around the ring through hole 413, A band side coil 414 is formed. And the extending | stretching part 314e is extended | stretched to the position corresponding to the one part area | region of the band part 411 of a band member.

  Moreover, in this Embodiment 1-3, it may replace with the hanger 4 and may perform a key management process using the hanger 41 shown in FIG. In the key management system 1 a shown in FIG. 31, the hanger 41 having the same number of communication connection lines 36 a as the number of rings 20 that can be attached is used so that the current supply can be controlled for each ring 20. As for each communication connection line 36a-36n, while conducting wire is each extended from the connection part 37a connected to the cable 38 in C21 part, it is similar to the communication connection line 36 shown in FIG. A feeding coil 39 is formed around one of the insertion openings. The power supply coil 39 is transformer-coupled to the coupling coil 23 of the ring 20. In the reader 30a, the control unit 31a can supply a current for each of the communication connection lines 36a to 36n, and therefore reads the identification information of the non-contact information medium 17 in the key 10 bundled in the ring 20 for each insertion port. The process can be controlled. For this reason, the processing unit 33a can obtain from the processing result of the reading processing as storage information what kind of key 10 is attached to which insertion port of which hanger 41 via the ring 20. .

  3 to 6 is about 3 mm in thickness, and when the key cover 12 is formed with a 13-turn key-side coil 14 with a coil diameter of 6 mm, the thickness of the key 10 is 10 mm. Even if the keys 10 are overlapped, the influence of mutual interference between the key coils 14 is small even when the keys 10 are overlapped, and communication processing with the readers 30, 230, 30a can be performed accurately. However, when the keys are overlapped with more than 10 sheets, the influence of mutual interference between the key side coils 14 cannot be ignored.

  Therefore, when it is normal to manage 10 keys or more in a stacked state, the structure having the key 510 having the non-contact information medium 517 shown in FIG. 32 or the non-contact information medium 617 having the structure shown in FIG. Key management may be performed with the key 610.

  The non-contact information medium 517 shown in FIG. 32 has the same configuration as that of the non-contact information medium described in Japanese Patent Application Laid-Open No. 2005-056118 by the applicant, and the key-side coil 514 is cut at least part of the conductor. When the non-contact information medium 517 is arranged in the vicinity of the plurality of non-contact information media 517, the resonance frequency of the resonance circuit formed by the key side coil 514 and the capacitor 516 is the reader 30, 30a, 230 matches the frequency of the electromagnetic wave emitted from 230. That is, when a plurality of keys 510 overlap so that the non-contact information media 517 overlap each other, communication processing with the readers 30, 30a, and 230 is performed.

  A non-contact information medium 617 shown in FIG. 33 has the same configuration as that of the non-contact information medium described in Japanese Patent Application Laid-Open No. 2006-067479 by the applicant of the present invention. The chip coil 619 having an inductance concentrated in the structure is provided. The chip coil 619 mainly forms the inductance of the resonance circuit formed by the key side coil 614 and the capacitor 616. For this reason, since the number of turns of the conducting wire of the key-side coil 614 can be reduced, even when a plurality of keys 610 are overlapped so that the key-side coils 614 overlap each other, there is almost no mutual interference between the non-contact information media 617 and correct communication is performed. Processing can be performed.

1, 201, 301, 1a Key management system 2 Key storage 3 Drawer 4, 4a Hanger 10 Key 12 Key cover 13 Through hole 14, 514, 614 Key side coil 15 IC chip 16, 216, 316, 516, 616 Capacitor 17 , 217, 317, 317a, 417, 517, 617 Non-contact information medium 20 Ring 21 Ring body 23 Coil for coupling 24 Coil for key communication 30, 30a, 230, 330 Reader 31, 31a, 51 Control unit 32, 52 Input unit 33, 33a, 233, 333 Processing unit 34, 54 Output unit 36 Communication connection line 35, 55 Storage unit 37 Connection unit 38 Cable 39 Power supply coil 56 Communication processing unit 210 Binding band 213 Ring through hole 214 Band side coil

Claims (8)

A key management system for managing a key accommodated in a key storage provided with a non-contact information medium including a memory for storing predetermined identification information and an antenna coil for transmitting the identification information to an external device In
A holding member that holds a part of the key and is provided with a through hole around which a conducting wire that forms the coil is wound;
A ring for bundling keys held by the holding member by being inserted into the through hole of the holding member, and a communication coil for communicating with the non-contact information medium, and connected to the communication coil And a ring having ring side connection means electrically connected to the outside,
A hanger from which the ring is detachable, comprising a predetermined communication connection line and a hanger side connection means for connecting to the communication connection line and electrically connecting to the ring side connection means When,
Identification information from a non-contact information medium of a key bundled in the ring by connecting to the communication coil of the ring attached to the hanger by connecting to the communication connection line of the hanger, and using the connected communication coil A reader to read
And managing the key based on identification information of the non-contact information medium read by the reader.   When the ring is inserted into the through hole of the holding member and bundles the holding member, the conducting wire forming the communication coil of the ring and the conducting wire forming the coil of the holding member are positioned substantially concentrically. The key management system according to claim 1, wherein the key management system is wound around. The reader is
Control means for controlling the communication processing of the communication coil of the ring to read the identification information of the non-contact information medium of the key;
Processing means for processing the identification information of the non-contact information medium of the key read by the control processing of the control means;
An output means for outputting a processing result by the processing means;
Storage means for storing key storage information in the key storage created based on the processing result by the processing means;
The key management system according to claim 1, further comprising:   The key management system according to claim 1, wherein the holding member is a cover member that accommodates a part of the key.   The key management system according to claim 1, wherein the holding member is a binding band capable of binding the key. In the binding band, a part of the conductive wire forming the coil is extended to the band part,
When the non-contact information medium of the binding band and the communication coil cannot communicate with each other, the processing means determines that the key held in the binding band may be removed,
The key management system according to claim 5, wherein the output unit outputs a determination result of the processing unit. The coil includes a plurality of subcoils that overlap each other in the winding direction,
The key management system according to claim 6, wherein a part of a conductive wire forming at least one subcoil among the plurality of subcoils is extended to a band portion.   The key management system according to claim 1, wherein the ring-side connection means of the ring and the hanger-side connection means of the hanger are formed of a coil member.

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