JP4608508B2 - Key management device - Google Patents

Description

  The present invention relates to a key management device that manages keys such as doors.

  Conventionally, a key management device has been employed when efficiently managing the keys of equipment in the installation area of equipment.

  When realizing this key management device, as shown in FIG. 5, generally, all of the doors and other open / close objects 801,... An electric lock 802 and a sensor 803 capable of detecting the open / close state are installed on the open / close objects 801. A plurality of electric lock control units 804,... For monitoring the electric lock 802 and the sensor 803, and a control unit 805 for monitoring the control and state of these electric lock control units 804,. And the key management device 806 is constructed.

  Thereby, it is comprised so that the lock | rock unlocking operation of the said electric lock 802 equivalent to rental and return of a key, and an operation | movement history can be managed.

On the other hand, when it is not possible to replace the electric lock 802 due to the shape and position of the locking part of the opening / closing object 801 such as a door, cost problems, restrictions on equipment equipment being operated, etc., as shown in FIG. Are stored in the key lock function unit 813 of the key storage unit 812, and the control and status of the key storage unit 812 are monitored. The key management device 815 is configured by providing the unit 814, and a method of managing the lending / returning of the key 811 and the operation history is adopted. As this type of key management device 815, the lending / returning of the key 811 and The open / close state of the open / close object 801 such as a door is not used for operation history management (see, for example, Patent Document 1).
JP-A-6-229149

  However, in the conventional key management device 815 that accommodates the key 811 of the opening / closing object 801 such as the door in the key storage unit 812, the opening / closing state of the door or the like for the rental or return of the key 811 and the management of the operation history Is not used, the following problems occur, and the key 811 is not sufficiently managed.

  (A) It is impossible to detect an abnormality (opening of a door or the like) in which a door or the like that does not lend the key 811 is opened by an unauthorized method.

  (B) An abnormality (forgetting locking) that the key 811 is returned without locking the door or the like cannot be detected.

  These problems are that, in the above-described key management device 806 in which the electric lock 802 is installed on all the doors and the like, the electric lock 802 and the sensor 803 that can detect the open / close state are generally installed, and the electric lock 802 is locked. It does not occur because the unlocked state and the door open / closed state can be detected at the same time.

  Therefore, if there are restrictions as described above, various disadvantages at the time of introduction (examination of mounting method of electric lock, new creation of mounting brackets, increased cost due to increased mounting work time, stopping operating equipment in operation) The key management device 806 in which the electric lock 802 is installed on all the doors and the like described above are introduced, and the key 811 is managed sufficiently, or the key 811 is managed. The key management device 815 in which the key 811 such as the conventional door described above is accommodated in the key storage unit 812 must be selected.

  The present invention has been made in view of such conventional problems, and an object thereof is to provide a key management device that can be easily introduced and can monitor an abnormality from the relationship between a key and an opening / closing object. To do.

In order to solve the above-mentioned problem, the key management device according to claim 1 of the present invention stores a key for locking and unlocking doors, drawers, sliding doors, doors and other opening / closing objects so that the key can be lent. The key storage unit having a function of grasping the lending return state of the door, the sensor for detecting the opening / closing state of the opening / closing object, the opening / closing state monitoring unit for monitoring the opening / closing state signal from the sensor, and the key storage unit A controller for monitoring consistency of the opening / closing state of the opening / closing object detected by the lending / returning state of the key and the opening / closing state monitoring unit, wherein the control unit When a change in the open / close state is detected, a key lending return state for locking / unlocking the open / close object is compared with an open / closed state of the open / close object corresponding to the key, and the key is not rented. Although in the saved returned state is released by using the key If the閉物determines that becomes an open state, the opening and closing thereof is provided with an unauthorized opening abnormality detecting means for detecting the unauthorized opening abnormalities drilled illegally.

  That is, a sensor for detecting an open / close state is attached to an open / close object such as a door, a drawer, a sliding door, or a door, and an open / close state monitoring unit that monitors this sensor is installed, for example, around the open / close object.

  The key for locking and unlocking the opening / closing object is stored in a key storage unit having a function of grasping the rental return state of the key so that the key can be lent.

  Then, the lending return state of the key grasped by the key storage unit is associated with the opening / closing state of the opening / closing object detected by the opening / closing state monitoring unit, and the consistency is monitored by the control unit. Detected.

  That is, the control unit compares the lending / returning state of the key with the opening / closing state of the opening / closing object corresponding to the key.

  At this time, when the opening / closing object that is locked and unlocked by the rented key is in the open state, it is considered that the opening / closing object is unlocked and opened by the lent key. On the other hand, when an opening / closing object that is locked / unlocked with a key that has not been rented is in an open state, it can be determined that the opening / closing object has been illegally unlocked and opened by, for example, opening it. In this case, the control unit detects the abnormal opening abnormality.

Furthermore, in the key management device according to claim 2 , the control unit compares the lending return state of the key with the opening / closing state of the opening / closing object corresponding to the key, and the key is returned when the key is returned. When the opening / closing object to be locked / unlocked is in an open state, a lock forgetting abnormality detecting means for detecting an abnormality due to forgetting to lock is provided.

  That is, the control unit compares the lending / returning state of the key with the opening / closing state of the opening / closing object corresponding to the key.

  At this time, when the opening / closing object locked / unlocked by the key is closed when the key is returned, it is determined that the key has been returned after the opening / closing object is locked. Can do. On the other hand, when the key is returned and the opening / closing object locked / unlocked by the key is in the open state, it can be determined that the key has been returned without locking the opening / closing object. In this case, the control unit detects that the lock is forgotten.

In addition, in the key management device according to claim 3, when the control unit detects an abnormality by comparing the lending return state of the key with the opening / closing state of the opening / closing object corresponding to the key, Abnormal state recording means for recording the fact in the storage unit is provided.

  That is, the control unit compares the lending / returning state of the key with the opening / closing state of the opening / closing object corresponding to the key.

  At this time, when an abnormality is detected, that effect is recorded in the storage unit as history information. For this reason, whether or not an abnormality has occurred is confirmed by referring to the record in the storage unit.

Further, in the key management device according to claim 4 , when the control unit detects an abnormality by comparing the lending return state of the key with the opening / closing state of the opening / closing object corresponding to the key, the fact is notified. An abnormal state display means for displaying on the display unit is provided.

  That is, the control unit compares the lending / returning state of the key with the opening / closing state of the opening / closing object corresponding to the key. At this time, when an abnormality is detected, a message to that effect is displayed.

  For this reason, occurrence of an abnormality is confirmed by monitoring this display unit.

Furthermore, in the key management device according to claim 5 , the key storage unit only detects the rental return state of the key.

  That is, since the key storage unit only detects the lending / returning state of the key, a lock mechanism or the like for binding the key becomes unnecessary.

In the key management device according to claim 6 , a wireless transmission unit is connected to the output of the sensor, a wireless reception unit is connected to an input of the open / close state monitoring unit, and an open / closed state signal from the sensor is The open / close state of the opening / closing object is detected by transmitting the radio wave from the transmission unit to the wireless reception unit.

  That is, since there is no wiring from the sensor to the open / close state monitoring unit, installation work is facilitated.

In the key management device according to claim 7 , an infrared transmitter is connected to the output of the sensor, an infrared receiver is connected to an input of the open / close state monitor, and an open / close state signal from the sensor is transmitted to the infrared The open / close state of the opening / closing object is detected by transmitting the infrared ray from the transmission unit to the infrared reception unit.

Similarly to the key management device according to the sixth aspect , since there is no wiring from the sensor to the open / close state monitoring unit, installation work is facilitated.

  As described above, in the key management device of the present invention, the sensor is provided on an opening / closing object such as a door, a drawer, a sliding door, or a door, and an open / close state monitoring unit that monitors the sensor and the key that stores the key. An abnormal state can be detected from the lending return state and the open / closed state simply by installing a storage unit.

  Therefore, it is possible to monitor the abnormality from the relationship between the key and the opening / closing object while facilitating the introduction of the key management device.

  And the subject mentioned above can be solved by detecting the abnormality by associating the opening / closing information of the opening / closing object such as the door and the rental return information of the key by the control unit.

  In other words, (i) of the above-described problem will be described. When the opening / closing object such as a door is changed to an open state, the rental return information of the key is checked, and if the key is in a return state, The control unit can detect that a door or the like that has not been rented a key is opened abnormally (opening the door or the like).

  Also, (B) of the above-mentioned problem will be described. When the key is returned, the door opening / closing information is checked, and if the door is open, the key is locked without locking the door. The controller can detect that the abnormality has been returned (forgetting to lock).

  Abnormalities detected by the above-mentioned operation are displayed on the control unit and notified to the key manager or the key user, which can occur on a daily basis by opening the door or the like, which is an illegal act. Forgetting to lock, which is a simple mistake, can be dealt with more quickly than a conventional key management device that accommodates a key such as a door in a key storage unit, thereby improving the security that is the essence of key management.

  Further, by recording the detected abnormality as history information, it is possible to perform a follow-up investigation of the abnormality detected in the past.

  As an effect that can be expected in addition to detecting an abnormality, the control unit can display the open / closed state of the door, etc., so that the usage status of the lent key (for example, if the door is open, the user of the key is currently working) Or if the door is closed after a certain period of time has passed since the key was lent, it can be guessed).

  In addition, by recording opening / closing information such as doors as history information, it is possible to infer past key usage conditions by associating it with key rental return information.

  Furthermore, when compared with the configuration of a conventional key management device in which electric locks are installed on all the doors, etc., mounting to the doors etc. can be done simply by providing a sensor that can detect the open / closed state and an open / closed state monitoring unit. Since a lock is not required, the lock can be installed without any restrictions such as the shape and position of a locking part such as a door, cost problems, and equipment being in operation, and the above-described problems can be solved. As a result, the function of the key management device that accommodates the key of the conventional door, which was originally a simple key management method, in the key storage unit is improved, and all doors that are ideal key management methods, etc. It is possible to approach a key management device provided with an electric lock.

  In addition, if only the detection of the lending / returning state of the key is performed, a lock mechanism or the like for restraining the key becomes unnecessary, and the cost can be further reduced.

  In addition, a wireless transmission unit is connected to the output of the sensor, a wireless reception unit is connected to an input of the open / close state monitoring unit, and an open / close state signal from the sensor is transmitted by radio waves from the wireless transmission unit If the open / closed state of the opening / closing object is detected by transmitting to the open / closed state, there is no wiring from the sensor to the open / closed state monitoring unit, so that the installation work becomes easy and the cost of the installation work can be reduced. .

  Although the wireless communication has been described above, the same effect can be obtained if infrared communication is performed after the wireless transmission unit is an infrared transmission unit and the wireless reception unit is an infrared reception unit.

  (First embodiment)

  A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a key management device 1 according to the present embodiment. The key management device 1 is, for example, an open / close object such as a door, a drawer, a sliding door, or a door in an installation area of equipment.・ It is a device that collectively manages keys 3 for locking and unlocking.

  The key management device 1 includes a key storage unit 11 that stores a plurality of keys 3,..., An open / close state monitoring unit 12 that monitors an open / close state of the opening / closing object 2 that is opened and closed by the key 3, and the key The storage unit 11 and the control unit 13 that monitors the open / close state monitoring unit 12 are configured.

  The key storage unit 11 includes a key lock function unit 21 that holds only the corresponding key 3, and each key lock function unit 21,... An unlocked state in which the key 3 can be removed can be formed. Each of the key lock function units 21... Is configured to detect whether or not the corresponding key 3 is inserted, and detects whether or not the corresponding key 3 is lent out. It is configured to output.

  The key lock function units 21 are connected to a control function unit 31. The control function unit 31 is configured to be able to control the key lock function unit 21 to the locked state and the unlocked state by outputting a control signal to each of the key lock function units 21,. Yes. Further, the holding state of the keys 3,... In each of the key lock function units 21,... Can be detected by signals output from the respective key lock function units 21,. And the lending return status of the keys 3,... Corresponding to the respective key lock function units 21,.

  The control function unit 31 is connected to the control unit 13 via the communication function unit 41 and the Ethernet (registered trademark) 42. For example, the control function unit 31 is connected to the control unit 13 based on an ID input to the control unit 13. The key lock function unit 21 corresponding to the key 3 that can be lent according to the control signal is unlocked, or the key storage unit 11 receives the keys 3,. The lending return state is configured so that it can be transmitted to the control unit 13. Accordingly, the control unit 13 is configured to detect the lending return state of each of the keys 3,... And to specify the key 3 when the key 3 is returned.

  The open / close state monitoring unit 12 is connected to sensors 51,... Attached to the open / close objects 2,... Locked and unlocked by the keys 3,. ,... Are configured to detect the open / closed state of the attached open / close objects 2. Each of the sensors 51,... Is connected to a monitoring function unit 52. The monitoring function unit 52 receives the open / close state signal from each of the sensors 51,. It is constituted so that it can grasp whether each opening-and-closing thing 2, ... with which * was attached is in an open state or a closed state.

  A communication function unit 61 is connected to the monitoring function unit 52, and the communication function unit 61 is connected to the control unit 13 via the Ethernet (registered trademark) 42. Accordingly, the control unit 13 is configured to be able to detect the open / closed state of the open / close objects 2,... When the open / close objects 2,. 2 can be specified.

  The control unit 13 includes a communication function unit 71 connected to the Ethernet (registered trademark) 42, and is configured to be able to communicate with the key storage unit 11 and the open / close state monitoring unit 12. A control function unit 72 is connected to the communication function unit 71, and the control function unit 72 includes a lending return state of each of the keys 3, acquired from the key storage unit 11, and the open / closed state. It is comprised so that the consistency with the opening / closing state of each said opening-and-closing thing 2, ... acquired from the monitoring part 12 may be monitored.

  A display function unit 81 including a display unit such as a monitor is connected to the control function unit 72 so that a display corresponding to the output from the control function unit 72 can be displayed on the display unit such as a monitor. It is configured.

  The control function unit 72 is connected to a storage unit 91 composed of storage means such as a hard disk, and the storage unit 91 has a rental return status of each key 3,. Opening / closing states of the opening / closing objects 2,... Are sequentially stored and databased, loan return information 93 in which the lending return states of the respective keys 3,. Open / close information 94 is constructed in which the open / close states of the objects 2,.

  Next, operations of the key storage unit 11, the control unit 13, and the open / close state monitoring unit 12 of the key management apparatus 1 will be described.

  First, the control function unit 72 of the control unit 13 transmits a key number indicating one or more available keys 3 to the key storage unit 11 by the communication function unit 71. Then, the key of each key lock function unit 21,... Is transmitted by the control function unit 31 of the key storage unit 11 via the communication function unit 71 and the communication function unit 41 of the key storage unit 11. The presence or absence of 3,... Is periodically monitored.

  Here, the key number of one or more available keys 3,... Transmitted by the control function unit 72 of the control unit 13 is the manager of the keys 3,. Needless to say, it is determined by the user's authentication.

  On the other hand, the communication function unit 41 of the key storage unit 11 receives an available key number from the control unit 13. Then, the control function unit 31 of the key storage unit 11 stores all the key lock function units 21,... Corresponding to the received key numbers of the available keys 3,.・ It can be taken out or the key 3, ... can be returned and stored. Further, the presence or absence of the keys 3,... Of all the key lock function units 21,... Is monitored, and if there is a change in the presence or absence, the communication function unit 41 causes the control unit 13 to The state of the key 3 is transmitted.

  When the communication function unit 71 of the control unit 13 receives the state of the key 3 from the key storage unit 11, the control function unit 72 of the control unit 13 displays the received state of the key 3 as loan return information. 93, the lending return information 93 and the opening / closing information 94 are associated with each other, the state of each of the opening / closing objects 2,... Is detected, and the detected result is recorded in the history information 92. At this time, the display function unit 81 of the control unit 13 displays the opened / closed state of the opening / closing object 2 and the rental return state of the key 3 as a result of the detection, and the manager of the key 3 or the key 3 Notify the user.

  The opening / closing state monitoring unit 12 monitors the opening / closing states of all the opening / closing objects 2,... Through the sensors 51,. The open / close state of the opening / closing object 2 is transmitted to the control unit 13 by the communication function unit 61.

  At this time, the communication function unit 71 of the control unit 13 receives the opening / closing state of the opening / closing object 2 transmitted from the opening / closing state monitoring unit 12, and the control function unit 72 opens / closes the received opening / closing object 2 The state is recorded in the opening / closing information 94, the opening / closing information 94 and the loan return information 93 are associated with each other, the state of the opening / closing object 2 is detected, and the detection result is recorded in the history information 92. At this time, the display function unit 81 of the control unit 13 displays the opening / closing state of the opening / closing object 2 and the lending / returning state of the key 3 as a result of detection, and the manager of the key 3 or the use of the key 3 The person in charge.

  As a result of detection, as a method of notifying the manager of the key 3 or the user of the key 3 of the opening / closing state of the opening / closing objects 2,. There is a method of transmitting to the communication terminal of the manager of the key 3 or the user of the key 3 via a wide area network or the like.

  The operation of the present embodiment having the above configuration will be described with reference to a flowchart as shown in FIG.

  That is, when the key management device 1 starts monitoring an abnormality, the communication function unit 71 of the control unit 13 opens and closes the open / close state of the open / close objects 2,. The state of each key 3,... Transmitted from the key storage unit 11 is sequentially received (S1).

  When the opening / closing state of each opening / closing object 2 is received from the opening / closing state monitoring unit 12 (S2), the control function unit 72 of the control unit 13 displays the opening / closing state of the opening / closing object 2 as the opening / closing information 94. (S3), the lending return state of the key 3 corresponding to the opening / closing object 2 is read from the lending return information 93 (S4), and the read lending return state and the opening / closing state are associated with each other. Monitor.

  The case where the opening / closing object 2 is opened will be described. When the control function unit 72 of the control unit 13 receives from the opening / closing state monitoring unit 12 that the opening / closing object 2 has been opened (S2). ) In addition, the fact that the opening / closing object 2 is in the open state is recorded in the opening / closing information 94 (S3), and the lending return state of the key 3 for locking and unlocking the opening / closing object 2 is read from the lending return information 93. (S4).

  Then, in the return state in which the key 3 is inserted into the key lock function unit 21, it is determined whether or not the opening / closing object 2 that is locked and unlocked by the key 3 is in an open state (S5).

  At this time, when the key 3 is in a lent state and the opening / closing object 2 corresponding to the key 3 is in an open state, it is considered that the opening / closing object 2 is unlocked and opened by the lent key 3 to be in a normally open state. For this reason, after recording that the normally open state is detected in the history information 92 (S6), the display unit of the display function unit 81 displays that the opening / closing object 2 is opened (S7). ), The fact that the key 3 for unlocking the opening / closing object 2 is being lent is displayed (S8), and the process proceeds to step S1.

  In step S5, when the key 3 is returned and the opening / closing object 2 corresponding to the key 3 is in the opened state, the opening / closing object 2 that is locked and unlocked by the non-rented key 3 is in the opened state. Therefore, it can be determined that the opening / closing object 2 has been illegally unlocked and opened by prying open. In this case, the control unit function unit 72 determines that the unauthorized opening abnormality is detected, records that the unauthorized opening abnormality state is detected in the history information 92 (S9), and indicates that the unauthorized opening abnormality state is detected. The information is displayed on the display unit of the display function unit 81 and notified to the manager of the key 3 or the user of the key 3 (S10).

  Then, the display unit of the display function unit 81 displays that the opening / closing object 2 is opened (S7) and that the key 3 for unlocking the opening / closing object 2 is not lent out. Display (S8), and proceed to step S1.

  On the other hand, when the state of the key 3 is received from the key storage unit 11, the control function unit 72 of the control unit 13 receives the fact that the key 3 has been returned from the key storage unit 11. When this is done (S11), the fact that the key 3 is in the return state is recorded in the lending return information 93 (S12), and the opening / closing state of the opening / closing object 2 locked and unlocked with the key 3 is recorded in the opening / closing information 94. (S13).

  Then, in the return state in which the key 3 is inserted into the key lock function unit 21, it is determined whether or not the opening / closing object 2 locked and unlocked by the key 3 is in an open state (S14).

  At this time, when the key 3 is returned and the opening / closing object 2 locked and unlocked by the key 3 is closed, the key is returned after the opening / closing object 2 is locked. It can be judged as a return state. For this reason, after recording that the normal return state has been detected in the history information 92 (S15), the display unit of the display function unit 81 displays that the opening / closing object 2 is closed (S7). ), The fact that the key 3 for unlocking the opening / closing object 2 has been returned is displayed (S8), and the process proceeds to step S1.

  In step S14, when the key 3 is returned and the opening / closing object 2 that is locked and unlocked by the key 3 is in the open state, the key 3 is not locked without locking the opening / closing object 2. It can be determined that it has been returned. In this case, the control unit function unit 72 determines that the lock forgetting abnormality is detected, records the fact that the lock forgetting abnormal state is detected in the history information 92 (S16), and indicates that the lock forgetting abnormal state is detected. The information is displayed on the display unit of the display function unit 81 and notified to the manager of the key 3 or the user of the key 3 (S17).

  Then, the display unit of the display function unit 81 displays that the opening / closing object 2 is opened (S7) and displays that the key 3 for unlocking the opening / closing object 2 has been returned. (S8), the process proceeds to step S1.

  As described above, in the key management device 1 according to the present embodiment, the sensors 51,... Are provided in the opening / closing objects 2,... Such as doors, drawers, sliding doors, doors, etc. It is possible to detect an abnormal state from the lending return state and the open / closed state only by installing the open / closed state monitoring unit 12 for monitoring the open / closed state and the key storage unit 11 for storing the keys 3. Can do.

  Therefore, it is possible to monitor the abnormality from the relationship between each key 3 and each corresponding opening / closing object 2,... While facilitating the introduction of the key management device 1.

  Then, the control unit 13 detects the abnormality by associating the opening and closing information 94 of the doors 2 and the like with the rental return information 93 of the keys 3 and so on, thereby solving the conventional problem. can do.

  That is, the problem (A) given in the conventional example will be described. At the timing when the opening / closing object 2 such as a door changes to the open state, the rental return information 93 of the key 3 is examined, and the key 3 is in the return state. If it is, the control unit 13 can detect that the opening / closing object 2 such as a door that does not lend the key 3 is an abnormality (opening the door or the like) opened by an unauthorized method.

  Further, the problem (b) given in the conventional example will be described. At the timing when the key 3 is returned, the opening / closing information 94 of the opening / closing object 2 such as a door is examined, and the opening / closing object 2 is in an open state. In this case, the controller 13 can detect that the key 3 has been returned without locking the opening / closing object 2 (forgetting to lock).

  The abnormality detected by the above-described operation is displayed on the display function unit 81 of the control unit 13 and notified to the manager of the key 3 or the user of the key 3 to open or close a door or the like that is an illegal act. It is possible to deal with the opening of the object 2 and forgetting to lock, which is a simple mistake that occurs on a daily basis, more quickly than the key management device that accommodates the conventional key in the key storage unit.・ Security that is the essence of management is improved.

  Further, by recording the detected abnormality as the history information 92, it is possible to perform a follow-up investigation of the abnormality detected in the past.

  As an effect that can be expected in addition to the detection of an abnormality, the open / close state of the door / opening / closing object 2 can be displayed on the display function unit 81 of the control unit 13. If 2 is open, the user of the key 3 is currently working, or if a certain period of time has passed since the key 3 was lent, but the door or other open / closed object 2 is closed, the user has not arrived at the site. Etc.).

  Further, by recording the opening / closing information 94 of the opening / closing object 2 such as a door as the history information 92, it is possible to estimate the past usage status of the key 3 by associating it with the rental return information 93 of the key 3.

  Furthermore, when compared with the configuration of the conventional key management device in which electric locks are installed on the doors and other opening / closing objects 2, the door 51 and the like are attached to the door / opening / closing object 2 with the sensor 51 capable of detecting the opening / closing state. Since only an open / close state monitoring unit 12 is provided, an electric lock is not required, so that it is installed without restrictions such as the shape and position of the locking part of the door 2 or other opening / closing object 2, cost problems, and equipment being in operation. And the above-mentioned problems can be solved. As a result, the function of the key management device 1 in which the key 3 of the conventional opening / closing object 2 that was originally a simple key 3 management method is accommodated in the key storage unit 11 is improved. It becomes possible to approach a key management device in which electric locks are installed on all the opening / closing objects 2 such as doors.

In addition, if only the lending return state of the key 3 is detected, a lock mechanism or the like for restraining the key 3 becomes unnecessary, and the cost can be further reduced.

  (Second Embodiment)

  That is, FIG. 3 is a block diagram showing the key management apparatus 101 according to the second embodiment. The same or equivalent parts as in the first embodiment are not described, and different parts are attached. Only explained.

  In the key management apparatus 101 of the present embodiment, the control associated with the lending return operation of the key 3 of the first embodiment is deleted.

  The difference in configuration from the key management device 1 according to the first embodiment will be described. In the key storage unit 11, the key lock function unit 21,. The control function unit 31 is abolished, and key detection function units 111,... For detecting the storage state of the corresponding key 3 are added.

  This is an operation that always allows the key storage unit 11 to be taken out or stored without authenticating the manager of the key 3 or the user of the key 3. A key management apparatus 101 is configured. Note that the Ethernet (registered trademark) 42 is used for communication between the units 11, 12, and 13 as in the first embodiment.

  Next, operations of the key storage unit 11, the control unit 13, and the open / close state monitoring unit 12 of the key management apparatus 101 will be described.

  First, in the present embodiment, unlike the first embodiment described above, control from the control unit 13 to the key storage unit 11 is not performed. The control function unit 72 of the control unit 13 passes through the communication function unit 71 and the communication function unit 41 of the key storage unit 11, and each key detection function unit 111 of the key storage unit 11. Thus, the presence or absence of each key 3,... Is periodically monitored.

  At this time, the keys 3,... Of the key storage unit 11 are always in a state where they can be taken out or returned and stored. For this reason, the key detection function unit 111 of the key storage unit 11 sends the key 3 to the control unit 13 by the communication function unit 41 when there is a change in the presence or absence of the keys 3. Send the status of.

  That is, the communication function unit 71 of the control unit 13 receives from the key storage unit 11 that there has been a change in the rental return state of the key 3. Then, the control function unit 72 of the control unit 13 records the received lending return state of the key 3 in the lending return information 93 and associates the lending return information 93 with the opening / closing information 94 to open / close objects such as doors. 2 is detected, and the detection result is recorded in the history information 92. At this time, the display function unit 81 of the control unit 13 displays the opened / closed state of the opening / closing object 2 and the rental return state of the key 3 as a result of the detection, and the manager of the key 3 or the key 3 Notify the user.

  The opening / closing state monitoring unit 12 monitors the opening / closing states of all the opening / closing objects 2,... Through the sensors 51,. The open / close state of the opening / closing object 2 is transmitted to the control unit 13 by the communication function unit 61.

  At this time, the communication function unit 71 of the control unit 13 receives the opening / closing state of the opening / closing object 2 transmitted from the opening / closing state monitoring unit 12, and the control function unit 72 opens / closes the received opening / closing object 2 The state is recorded in the opening / closing information 94, the opening / closing information 94 and the loan return information 93 are associated with each other, the state of the opening / closing object 2 is detected, and the detection result is recorded in the history information 92. At this time, the display function unit 81 of the control unit 13 displays the opening / closing state of the opening / closing object 2 and the lending / returning state of the key 3 as a result of detection, and the manager of the key 3 or the use of the key 3 The person in charge.

  As a result of detection, as a method of notifying the manager of the key 3 or the user of the key 3 of the opening / closing state of the opening / closing objects 2,. There is a method of transmitting to the communication terminal of the manager of the key 3 or the user of the key 3 via a wide area network or the like.

  In the present embodiment according to the above configuration, the key storage unit 11 only detects the lending return state of the keys 3,..., And thus a lock mechanism for restraining the keys 3,. Etc. become unnecessary.

For this reason, in this embodiment, in addition to the effects of the first embodiment described above, the cost of the entire apparatus can be reduced.

  (Third embodiment)

  That is, FIG. 4 is a block diagram showing the key management apparatus 201 according to the third embodiment. The description of the same or equivalent parts as those in the first embodiment is omitted, and different parts are attached. Only explained.

  The difference in configuration between the key management device 201 of the present embodiment and the key management device 1 of the first embodiment will be described. A wireless transmission unit is included in the output of the sensor 51 of the first embodiment. 82 and a wireless reception unit 83 connected to the monitoring function 52 of the open / close state monitoring unit 12.

  This is to detect the open / closed state of the opening / closing object 2 by transmitting the open / closed state signal from the sensor 51 to the wireless receiving unit 83 by radio waves from the wireless transmitting unit 82. Since there is no wiring from the sensor 51 to the open / close state monitoring unit 12, a key management device 201 is provided that facilitates installation work.

  Note that the Ethernet (registered trademark) 42 is used for communication between the units 11, 12, and 13 as in the first embodiment.

  Next, operations of the wireless transmission unit 82, the wireless reception unit 83, and the open / close state monitoring unit 12 of the key management device 201 will be described.

  First, in the present embodiment, unlike the above-described first embodiment, the open / close state signal from the sensor 51 is not directly transmitted to the open / close monitoring unit 12, but the wireless transmission unit 82 and the wireless reception unit The signal is transmitted to the open / close monitoring unit 12 via 83.

  The wireless transmission unit 82 monitors an open / closed state signal of the sensor 51 connected thereto, and when a change occurs in the open / closed state, the open / closed state of the opening / closing object 2 is changed to a radio wave from the wireless transmission unit 82. Is transmitted to the wireless receiver 83.

  The open / close state monitoring unit 12 monitors the open / close states of all the open / close objects 2,... Through the wireless reception unit 83 by the monitoring function unit 52. The open / close state of the object 2 is transmitted to the control unit 13 by the communication function unit 61.

  In the present embodiment having the above-described configuration, since there is no wiring from the sensor 51 to the open / close state monitoring unit 12, installation work is facilitated.

  For this reason, in this embodiment, in addition to the effects of the first embodiment described above, the cost of installation work can be reduced.

  In this embodiment, wireless communication is described. However, when infrared communication is performed, infrared communication can be performed after the wireless transmission unit 82 is an infrared transmission unit and the wireless reception unit 83 is an infrared reception unit. Needless to say.

It is a block diagram which shows the 1st Embodiment of this invention. It is a flowchart which shows the operation | movement of the embodiment. It is a block diagram which shows the 2nd Embodiment of this invention. It is a block diagram which shows the 3rd Embodiment of this invention. It is a block diagram which shows the conventional key management apparatus. It is a block diagram which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key management apparatus 2 Opening and closing thing 3 Key 11 Key storage part 12 Opening and closing state monitoring part 13 Control part 21 Key lock function part 31 Control function part 41 Communication function part 42 Ethernet (trademark)
DESCRIPTION OF SYMBOLS 51 Sensor 52 Monitoring function part 61 Communication function part 71 Communication function part 72 Control function part 81 Display function part 82 Wireless transmission part 83 Wireless reception part 91 Storage part 92 History information 93 Lending return information 94 Opening / closing information 101 Key management apparatus 111 Key detection Functional part

Claims (7)

A key storage unit having a function of storing a key for locking and unlocking doors, drawers, sliding doors, doors, and the like so that the key can be rented and grasping the rental return state of the key;
A sensor for detecting an open / closed state of the opening / closing object, and an open / closed state monitoring unit for monitoring an open / closed state signal from the sensor;
A controller that monitors the consistency of the opening / closing state of the opening / closing object detected by the lending return state of the key and the opening / closing state monitoring unit grasped by the key storage unit;
A key management device comprising:
When the control unit detects a change in the opening / closing state of the opening / closing object, the control unit compares the lending / returning state of the key for locking / unlocking the opening / closing object with the opening / closing state of the opening / closing object corresponding to the key. If the key is not rented and is in a stored return state, but it is determined that the opening / closing object opened using the key has been opened, the opening / closing object is illegally opened. A key management device comprising an unauthorized opening abnormality detection means for detecting an abnormality.   When the control unit detects a change in the lending / returning state of the key, the state in which the key is returned by comparing the lending / returning state of the key with the opening / closing state of the opening / closing object corresponding to the key 2. A key management according to claim 1, further comprising: a lock forgetting abnormality detecting means for detecting an abnormality caused by forgetting to lock when an openable / closable object to be unlocked by the key is in an open state. apparatus.   The control unit includes an abnormal state recording unit that records an abnormality in the storage unit when an abnormality is detected by comparing the lending return state of the key and the open / closed state of the opening / closing object corresponding to the key. The key management apparatus according to claim 1 or 2, characterized in that   The control unit includes an abnormal state display means for displaying an abnormality on the display unit when an abnormality is detected by comparing the lending return state of the key with the open / close state of the opening / closing object corresponding to the key. The key management device according to claim 1, 2 or 3.   The key management device according to claim 1, wherein the key storage unit only detects a rental return state of the key.   A wireless transmission unit is connected to the output of the sensor, a wireless reception unit is connected to an input of the open / close state monitoring unit, and an open / closed state signal from the sensor is transmitted to the wireless reception unit by radio waves from the wireless transmission unit. The key management apparatus according to claim 1, wherein an open / closed state of the opening / closing object is detected.   An infrared transmitter is connected to the output of the sensor, an infrared receiver is connected to the input of the open / close state monitor, and an open / close state signal from the sensor is transmitted to the infrared receiver by infrared rays from the infrared transmitter. The key management apparatus according to claim 1, wherein an open / closed state of the opening / closing object is detected.

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