JP2013213377A - Key management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record an image of a person who puts in/out a key and information specifying the key being put in/out.SOLUTION: A key management device has a body to and from which a key 30 is attachable and detachable. The body has an opening/closing door. A door detection circuit 66 detects whether the door is placed in an openable state or not. A camera 17 photographs and records an image in front of the body. A proximity switch 40 switches the ON/OFF state of the key 30 in response to the attaching/detaching of the key 30. A key detection circuit 62 recognizes the ON/OFF state of the key 30 in response to the switching of a key switch 40. When the door is placed in the openable state, the key detection circuit 62 outputs the data of the key 30 and an imaging device records the photographed image.

Description

  The present invention relates to a key management apparatus that records and manages key insertion / removal using video.

  Conventionally, there is known a key management device that detects the presence or absence of an unreturned key simply by providing a pair of light emitting units and light receiving units at both ends of a row for keys stored in a row (Patent Literature). 1). In this apparatus, when the key is not in a predetermined position, the light shielding member protrudes at a position where there is no key on the optical path. With this configuration, when light from the light emitting unit is blocked and light does not reach the light receiving unit, it is detected that any key in the row has not been returned to a predetermined position.

JP 2008-308879 A

  However, this device cannot identify a non-existent key among the keys arranged in a line, and cannot identify the person who puts in and out the key.

  Therefore, an object of the present invention is to provide a key management apparatus that can record an image of a person who has taken out and put in a key and information for specifying the taken out and put in a single video.

  The key management device according to the present invention is a main body with a detachable key, a door that opens and closes the main body, a door detection circuit that detects whether or not the door is openable, and an image in front of the main body. An image pickup apparatus for recording, a key switch for switching the ON / OFF state of the key according to the attachment / detachment of the key, and a key detection circuit for recognizing the ON / OFF state of the key according to the switching of the key switch. When the door is openable, the key detection circuit outputs the data of the key, and the imaging device records the captured video.

  Further, it is preferable that the imaging apparatus records the image in front of the main body and the information on the ON / OFF state of the key received from the key detection circuit in a state of being displayed on one screen.

  Furthermore, it is preferable that the information on the ON / OFF state of the key is information corresponding to a maximum of seven keys.

  Further, it is possible to record an image from a predetermined time before the door detection circuit detects that the door is in a releasable state to a predetermined time after the door detection circuit detects that the door is in an unreleasable state. preferable.

  According to the present invention, it is possible to record an image of a person who has put in and out a key and information for specifying the inserted and removed key in one video.

1 is an external view of a key management device to which an embodiment of the present invention is applied. It is a schematic diagram showing the internal structure of FIG. FIG. 2 is a block diagram illustrating an electrical configuration of FIG. 1. It is a flow showing the operation procedure of the key management apparatus in embodiment of this invention. It is a figure which shows the recording image by the key management apparatus in this embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Referring to FIG. 1, the key management device 10 includes a fixing unit 12, a door 11, and a main body 13. The door 11 and the main body 13 are provided so as to be freely opened and closed by a hinge 15. The fixing unit 12 includes a dial 14 having four password locks 16, a camera 17 that is an imaging device for photographing an operator, a power lamp 18 that notifies power on / off, and a recording lamp that reports recording of the camera 17. 20.

  The door 11 and the main body 13 are locked and fixed by a password lock 16. That is, when the password lock 16 is set to the unlock number, the dial 14 can be rotated, and when the dial 14 is rotated and the lock mechanism is released, the door 11 can be rotated around the hinge 15. When the dial 14 is rotated, recording is performed in the camera 17 and the recording lamp 20 starts blinking. The camera 17 always shoots while the power is on, but the recorded video is recorded at a predetermined time described in detail below.

  The door 11 has a display unit 22 and notifies the presence / absence of a detachable key in the key management device 10. That is, when the first key is present, the first key lamp 24 is turned on, and when there is not, the key lamp 24 is turned off. The number of key lamps 24 corresponding to the key number stored in the key management apparatus 10 is provided. In this embodiment, since 18 keys are stored, 18 key lamps 24 in the display unit 22 are provided, and the key lamp 24 is repeatedly turned on and off every time each key is inserted and removed.

  With reference to FIG. 2, the mechanical configuration inside the key management apparatus 10 will be described. FIG. 2 shows a state in which the door 11 is rotated around the hinge 15 and opened. The door 11 is provided with a protruding piece 26 having an opening 27 through which a lock member (not shown) is inserted.

  When the door 11 is closed and locked as shown in FIG. 1, the protruding piece 26 is in a state of being fitted in a long hole 28 provided in the main body 13. A lock member is inserted through the opening 27 of the projecting piece 26 fitted. When the lock member is inserted through the opening 27, the door 11 and the main body 13 are fixed.

  When the four password locks 16 are set to the unlock number, the dial 14 can be rotated. When the dial 14 is rotated in the unlocking direction, the lock member is released from the opening 27. Thereby, the door 11 can be opened from the main body 13, and is fully opened as shown in FIG. At the same time, the lighting of the LED 38 is started, and the recording of the video taken by the camera 17 is executed.

  Inside the main body 13, nine keys 30 are stored in the upper horizontal row and nine keys 30 are stored in the lower horizontal row. As shown in the key number table 36, each key has a unique key number. In the present embodiment, the upper left end is 1 and the right end is 9 in ascending order, the lower left end is 10 and the right end is 18 in ascending order. In FIG. 2, all the keys 30 except the key 17 are stored in predetermined positions. At this time, all of the key lamps 24 of the display unit 22 (see FIG. 1) are lit except for No. 17.

  The key 30 is attached to the reflection plate 32. The reflection plate 32 has an engagement hole 34 for engaging with a hook (not shown) provided in the main body 13, and the reflection plate 32 and the key 30 are hung inside the main body 13 by the hook. Further, at No. 17 where the key 30 is removed, the proximity switch (key switch) 40 is exposed. As will be described in detail later, the proximity switch 40 is provided to detect the presence or absence of the key 30.

  The proximity switch 40 will be described with reference to FIG. The three proximity switches in the lower right of FIG. 3 correspond to the states of key number 16, key number 17, and key number 18 shown in the key number table 36 in FIG. The key 30 and the reflecting plate 32 are viewed from the thickness direction. The proximity switch 40 includes a light emitting diode (not shown) and a light receiving diode (not shown).

  When the reflector 32 is in the ON state facing the proximity switch 40, that is, when the key 30 is in the key number 16 and key number 18 existing at a predetermined position, the light emitted from the light emitting diode is reflected. Reflected by the plate 32 and incident on the light receiving diode, an electric signal is generated.

  When the reflecting plate 32 is in the OFF state where it is not opposed by the proximity switch 40, that is, in the state of the key number 17 where the key 30 does not exist at a predetermined position, the light emitted from the light emitting diode is reflected by the reflecting plate 32. Not incident on the light receiving diode and no electrical signal is generated.

  The generated electrical signal (data) is transmitted to the key detection circuit 62. That is, when the key 30 is present, the switch is turned on and an electrical signal is transmitted, and when it is not present, the switch is turned off and no electrical signal is transmitted. Thus, the key detection circuit 62 detects the presence / absence of each key 30.

  Specifically, an electrical signal generated when light enters the light receiving diode is output to the key detection circuit 62 at the positions of the key numbers 16 and 18, and the key detection circuit 62 recognizes the presence of the key 30. Is done. At this time, the key lamp 24 corresponding to the key number 16 and the key number 18 on the display unit 22 in FIG.

  On the other hand, since no electrical signal is generated by the light not incident on the light receiving diode at the position of the key number 17, the electrical signal is not output to the key detection circuit 62, and the key 30 does not exist in the key detection circuit 62. Be recognized. At this time, the key lamp 24 corresponding to the key number 17 on the display unit 22 is turned off.

  Here, in order to accurately recognize that the reflecting plate 32 is removed and the proximity switch 40 is exposed, a light absorbing plate 44 is provided inside the door 11 as shown in FIG. This is because when the door 11 is closed, the reflected light is incident on the inner surface of the door 11 to prevent the reflection plate 32 from being erroneously recognized.

  The electrical configuration of the key management device 10 will be described with reference to FIGS. The electric circuit shown in FIG. 3 is built in the main body 13. The door 11 (see FIG. 2) is in a closed state. In step S01, the numbers of the four password locks 16 are set as unlock numbers. At this time, the dial 14 can rotate.

  In step S02, when the dial 14 is rotated in the unlocking direction and the lock member is removed from the opening 27 (see FIG. 2), the door 11 can be released. At this time, the door detection circuit 66 recognizes that the door 11 can be released. In addition, it is electrically recognized that the door 11 became releasable by using a conductive lock member as an electrical contact in the door detection circuit 66.

  When the door detection circuit 66 detects that the door 11 is in a releasable state, a lighting start signal and a recording start signal are transmitted to the light source 38 which is an LED. Thereby, in step S03, the lighting of the light source 38 and the recording of the video from several seconds before are started. That is, when the door 11 is opened, the light source 38 is turned on, and the person who opened the door 11, which is an image in front of the main body 13, is illuminated brightly. Thus, by providing the light source 38, the person who opened the door 11 is clearly recorded even in a dark place.

  Here, the video shot by the camera 17 is always stored in a temporary memory (not shown) while the power is turned on, but the video recorded on a recording medium (not shown) for recording management is used. Limited to images of a predetermined time. Strictly speaking, recording is started when the door detection circuit 66 detects that the door 11 is in a releasable state. However, the recorded video is a video from a predetermined time before detecting that the door is in a releasable state, for example, from 5 seconds before. The video 5 seconds before is taken out of the temporary memory.

  In step S04, the key 30 is taken in and out. At this time, as described above, the proximity switch 40 detects whether or not each key 30 is in a predetermined location. When the key 30 is removed, the light that has entered the proximity switch 40 is no longer incident, and the removal of the key 30 is recognized. When the key 30 is returned to the predetermined position, it is recognized that the key 30 has been returned to the predetermined position by the incidence of light that has not been incident on the proximity switch 40 until now.

  The presence or absence of incident light, that is, the presence or absence of the key 30 is transmitted to the key detection circuit 62 as an electrical signal. The number of the inserted / removed key 30 is identified by an electric signal input port in the key detection circuit 62. The key number recognized by the key detection circuit 62 is transmitted to the recorder 64 and recorded as a number on a recording medium (not shown) as will be described in detail below.

  In step S05, the door 11 is closed and the dial 14 is rotated in the locking direction. At this time, it is recognized that the door 11 cannot be released by inserting a lock member, which is an electrical contact in the door detection circuit 66, into the opening 27 (see FIG. 2). When the door detection circuit 66 detects that the door 11 is in an unreleasable state, a lighting end signal and a recording end signal are transmitted to the LED 38 and the recorder 64. Thereby, in step S06, the LED 38 is turned off, and the recorder 64 ends the recording after several seconds. Strictly speaking, the recording is performed after a predetermined time, for example, 5 seconds after the door detection circuit 66 detects that the door is in a releasable state.

  In step S07, when the lock 16 is set to the unlocked number, the dial 14 cannot be rotated and the door 11 is locked. In step S08, when locking is confirmed, the process ends.

  With reference to FIG. 5, the imaging | photography screen recorded in the recorder 64 is demonstrated. As described above, recording is performed between steps S03 and S06 in FIG. The captured video is recorded in a recording medium (not shown) provided in the recording medium storage unit 42 in FIG. In the image 80 recorded on the recording medium, the person 82 who opened the door 11 at the center of the screen, the date and time 84 between them at the upper left, and the number of the key 30 put in and out at the lower left are recorded.

  The storage number 86 at the lower left of the screen displays the number of the key 30 stored while the door 11 is opened. Similarly, the take-out number 88 shown immediately below the storage number 86 is the number of the key 30 taken out while the door 11 is opened. When the door 11 is opened, nothing is displayed in the storage number 86 and the removal number 88, and the number of the key 30 that has been taken in and out from when the door 11 is opened until it is closed is displayed.

  In the present embodiment, seven numbers corresponding to a maximum of seven keys are displayed in each of the storage number 86 and the removal number 88. For example, the storage number 86 in FIG. 5 indicates that the keys 30 with the key numbers 2 and 18 are in the ON state, that is, stored. The extraction number 88 indicates that the keys 30 with the key numbers 9 and 10 are in the OFF state, that is, have been extracted.

  The insertion / removal of the key 30 is recognized in response to the ON / OFF switching of the proximity switch 40 described above. Note that when the key 30 is not inserted or removed while the door 11 is opened and closed, no key number is displayed in the storage number 86 and the removal number 88, and the person 82 and the date and time 84 are recorded.

  As described above, it is possible to record an image of a person who has taken out and put in a key and information for specifying the taken in and out key in one video.

  In addition, the key 30 and the reflecting plate 32 in this embodiment do not need to be directly attached, and may be attached via a ring-shaped key holder or the like. That is, not only one key 30 but a plurality of keys 30 may be attached to one key number.

  The data transmitted from the proximity switch 40 to the key detection circuit 62 may be transmitted not only with the ON / OFF state of the proximity switch 40 but also with key number information. In this case, in the key detection circuit 62, the ports do not need to be divided for each proximity switch 40.

11 Door 13 Body 17 Camera (imaging device)
30 keys 40 proximity switch (key switch)
62 Key detection circuit 66 Door detection circuit

Claims (4)

A body with a detachable key;
A door for opening and closing the main body;
A door detection circuit for detecting whether or not the door is openable;
An imaging device that captures and records an image in front of the main body;
A key switch for switching the ON / OFF state of the key according to the attachment / detachment of the key;
A key detection circuit for recognizing the ON / OFF state of the key according to the switching of the key switch,
The key management device, wherein when the door is openable, the key detection circuit outputs data of the key, and the imaging device records a captured video.   The image pickup apparatus records the image in front of the main body and information on the ON / OFF state of the key received from the key detection circuit in a state of being displayed on one screen. The imaging device described.   The imaging apparatus according to claim 2, wherein the information on the ON / OFF state of the key is information corresponding to a maximum of seven keys. From the predetermined time before detecting that the door is in a releasable state in the door detection circuit,
The key management apparatus according to claim 1, wherein a video up to a predetermined time after the door detection circuit detects that the door is in an unreleasable state is recorded.

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