JP2006316470A - Key taking-out prevention system and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key taking-out prevention system capable of preventing a key from being mistakenly taken out. <P>SOLUTION: The first transmitter 1 is provided in the vicinity of a storage place of the key 3, the second transmitter 2 is provided in the vicinity of a locking and unlocking section to be locked and unlocked by the key 3, and call signals are transmitted from the first and second transmitters 1 and 2 for every predetermined time. While the key 3 exists in an area enabling the call signals to receive, in the case the call signals are received, an ID signal is replied to them. The first transmitter 1 or the second transmitter 2 receiving the ID signal transmits an instrumentation starting signal to the key 3. When the key 3 receives the signal, an elapsed time from the time receiving the signal is measured, and if the elapsed time gets to the predetermined time, a warning is made. While the key 3 exists in the outside of the area enabling the call signals to receive, in the case the predetermined time is made to elapse, the warning is made. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a key removal prevention system, and more particularly to alarm processing.

  Today, in an office building or the like, a key of a room is stored in a predetermined place, and a person using it unlocks the room using the key, and locks when the use of the room ends, The key is stored again in a predetermined place. This is the use of a so-called shared key. In the management method using such a shared key, there is a problem that if the used key is put in a pocket or the like and the user accidentally comes home, the room cannot be used thereafter. In order to solve such a problem, it may be possible to record in a notebook about taking out and returning a key, but the procedure and management are complicated.

Patent Document 1 discloses an electronic key capable of confirming lock of a key.
Japanese Patent Laid-Open No. 11-93473

  In order to solve such a problem, it may be possible to provide a limited entrance / exit in an office building and check whether there is a key taken out there. However, not only is the procedure complicated, but there is a risk of traffic jams at the location during the time when people are concentrated. Of course, traffic congestion can be alleviated by providing more check devices, but check devices are required accordingly. The same applies when there are many doorways.

  An object of the present invention is to provide a key take-out prevention system that can prevent erroneous key take-out.

  1) A key take-out prevention system according to the present invention includes: A) a key with an IC tag that returns an ID signal when a call signal is received; and B) a time when the ID signal is received when the call signal is repeatedly transmitted and the ID signal is received. And a first transmission / reception means for transmitting the recorded time data to the key with the IC tag to which the ID signal is returned, provided within a predetermined range from the storage location of the key with the IC tag. C) Sending the call signal repeatedly, receiving the ID signal, recording the received time and sending the recorded time data to the IC-tagged key that has returned the ID signal And a second controller disposed apart from the first controller, and D) the key with the IC tag is d1) the time Receiving the data, measuring means for measuring the elapsed time, d2) warning means for giving a warning when the elapsed time reaches a predetermined time, and d3) receiving another call signal after starting the measurement. In some cases, the information processing apparatus includes update means for causing the measurement means to newly perform measurement processing.

  In this way, the first or second controller transmits a call signal, the key with the IC tag responds with an ID signal, and the first or second controller receives the ID. Time data is transmitted to the key with the IC tag in response to the signal, and the key with the IC tag receives the time data and obtains an elapsed time from the time specified by the received time data. A warning will be given when the time is up. Therefore, it is possible to give a warning without checking the inspector to pass through a device that checks whether the key has been taken out by mistake. In addition, when another call signal is received after the measurement is started, the measurement unit is caused to perform a new measurement process from the time specified by the new time data sent corresponding to the call signal. Therefore, the warning is not made by moving the key with the IC tag to an area where the call signal can be received.

  2) The key removal prevention system according to the present invention includes: A) a key with an IC tag that returns an ID signal when a call signal is received; and B) a time when the ID signal is received when the call signal is repeatedly transmitted and the ID signal is received. And a first transmission / reception means for transmitting a measurement start signal to the key with the IC tag to which the ID signal is returned, and is provided within a predetermined range from the storage location of the key with the IC tag. 1) a controller that repeatedly transmits the call signal, receives the ID signal, records the received time, and transmits a measurement start signal to the IC-tagged key that has returned the ID signal. And a second controller disposed apart from the first controller, and D) the key with the IC tag receives a d1) measurement start signal. And a measuring means for measuring an elapsed time since reception, d2) a warning means for giving a warning when the elapsed time reaches a predetermined time, and d3) after the measuring means starts measurement, When the measurement start signal is received, the measurement means has update means for measuring the measurement time after receiving the other measurement start signal.

  Therefore, it is possible to give a warning without checking the inspector to pass through a device that checks whether the key has been taken out by mistake. Further, when another call signal is received after the measurement is started, the measurement is performed with the measurement start signal sent in response to the call signal. Therefore, the warning is not made by moving the key with the IC tag to an area where the call signal can be received.

  3) A key removal prevention system according to the present invention includes: A) a1) a measuring means for measuring an elapsed time after receiving the call signal upon receipt of the call signal; and a2) the elapsed time is predetermined. A key with an IC tag having a warning means for giving a warning when the time is exceeded, and B) a first transmission / reception means for repeatedly transmitting the call signal within a predetermined range from the storage location of the key with the IC tag. A first controller provided; and C) a second transmitter / receiver that repeatedly transmits the call signal, the second controller disposed apart from the first controller, and When the key with the IC tag receives another call signal after the start of the measurement, the measuring means measures an elapsed time from that point.

  Therefore, it is possible to give a warning without checking the inspector to pass through a device that checks whether the key has been taken out by mistake. Further, when another call signal is received after the start of the measurement, the elapsed time is measured from that point. Therefore, the warning is not made by moving the key with the IC tag to an area where the call signal can be received.

  4) A key with an IC tag according to the present invention is a key with an IC tag that returns an ID signal when a call signal is received, and the first controller or the second control responds to the returned ID signal. A receiving means for receiving time data transmitted from a machine, a measuring means for measuring an elapsed time when the receiving means receives the time data, and a warning for giving a warning when the elapsed time reaches a predetermined time. And an updating means for updating the measurement process when the receiving means receives another time data after the start of the measurement.

  Therefore, a warning can be issued when a key with an IC tag exists for a predetermined time outside the transmittable range of the first or second controller. Therefore, it is possible to issue a warning without providing a device for checking whether the key has been taken out by mistake at the doorway.

  5) According to the key take-out prevention method of the present invention, a first controller is provided within a predetermined range from a key storage location, a second controller is provided apart from the first controller, and the first controller is provided. The controller and the second controller repeatedly transmit call data to the key, and the key no longer receives call data from the first controller or the second controller. Whether or not a predetermined time has passed is determined, and when the predetermined time has passed without receiving the call data, a warning is issued with the key.

  Therefore, it is possible to give a warning without separately providing a device for checking whether the key is accidentally taken out at the doorway.

  In the present specification, “key” is a concept including not only a key to which an IC tag is attached, but also a case where information recorded on the IC tag is used as a key, as in the embodiment. is there. The “wireless communication” includes not only the case of using radio waves but also the case where non-contact communication is possible, such as light or infrared communication. The “warning” includes not only a sound generated by a buzzer or the like, but also a thing appealing to human senses such as a vibrator or light, and a warning mail sent to a predetermined mobile phone or the like.

  “Repeatedly transmit” refers to a case where transmission is performed at predetermined time intervals, and includes a case where the interval fluctuates periodically.

  In addition, the interval between call signals transmitted from the first or second communication device needs to be at least shorter than the predetermined time in step S19. In this embodiment, every other minute is used, but the present invention is not limited to this.

  The “first transmitting / receiving unit” corresponds to the transmitting / receiving unit 31 in the embodiment. In the embodiment, the “first controller” corresponds to the first communication device 1, and the “second controller” corresponds to the second communication device 2. In the embodiment, the ID signal corresponds to ID identification data.

  The present invention can provide a key removal prevention system that can prevent erroneous key removal.

1. Description of Functional Block Diagram One embodiment of the present invention will be described with reference to the drawings. The key removal prevention system shown in FIG. 1 includes a first communication device 1, a second communication device 2, and a key 3. The key 3 is stored at a predetermined storage location, and the first communication device 1 is provided near the storage location. The first communication device 1 includes first transmission / reception means 1a. When the first transmission / reception means 1a transmits a call signal every predetermined time (for example, every minute) and receives the ID signal transmitted in response to the call signal, the first transmission / reception means 1a records the received time and also measures the measurement start signal. Send. The second communication device 2 is installed apart from the first communication device 1. The second communication device 2 has a second transmission / reception means 2a having the same function as the first transmission / reception means 1a.

  The key 3 includes a measuring unit 5, a warning unit 7, and an updating unit 9. When the measurement means 5 receives the measurement start signal, the measurement means 5 measures an elapsed time since the reception. The warning means 7 issues a warning when the elapsed time reaches a predetermined time. When the measurement unit 5 receives another measurement start signal after the measurement unit 5 starts measurement, the update unit 9 causes the measurement unit 5 to measure an elapsed time after receiving the other measurement start process. .

  As described above, the first communication device 1 is provided in the vicinity of the storage location of the key 3, and the second communication device is provided in the vicinity of the locking / unlocking portion that is separated from the first communication device 1 and is locked and unlocked by the key 3. The communication device 2 is provided, and a call signal is transmitted from the first communication device 1 and the second communication device 2 every predetermined time. While the key 3 exists in an area where these call signals can be received, when the call signal is received, an ID signal is returned. The first communication device 1 or the second communication device 2 that has received the ID signal transmits a measurement start signal to the key 3. When the key 3 receives such a signal, the key 3 measures an elapsed time from the time of receiving the signal, and warns when the elapsed time reaches a predetermined time. In addition, when another measurement start signal is received after the measurement is started, the elapsed time since the reception of the other measurement start signal is measured, so that the key 3 is in an area where the call signal can be received. While there is no warning, no warning is given. When the predetermined time elapses outside the area where the call signal can be received, the warning is given.

2. Hardware Configuration The hardware configuration of the first communication device 1 shown in FIG. 1 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a hardware configuration of the first communication device 1 when the first communication device 1 is configured using a CPU.

  The first communication device 1 includes a CPU 23, a ROM 27, a transmission / reception unit 31 and a bus line 29. The CPU 23 controls each unit via the bus line 29 according to a program stored in the ROM 27.

  The program stored in the ROM 27 is a program for the first communication device 1 to perform communication processing with the key 3 as will be described later.

  Since the hardware configuration of the second communication device 2 shown in FIG. 1 is the same as that of the first communication device 1, description thereof is omitted.

  The hardware configuration of the key 3 shown in FIG. 1 will be described with reference to FIG. The key 3 includes a CPU 123, a ROM 127, a flash memory 126, a buzzer 133 as a warning means, a transmission / reception unit 131, and a bus line 129 in addition to the functions of a general key. The CPU 123 controls each unit via the bus line 129 according to a program stored in the ROM 127. The flash memory 126 stores ID identification data of the key 3.

  As described later, the program stored in the ROM 127 determines whether or not the key 3 performs communication processing with the first communication device 1 or the second communication device 2 and should be warned. When it is determined that a warning is required, the program is for generating a warning sound from the buzzer 133.

3. Flowchart Next, processing in this system will be described with reference to FIG. In the following, first, the key 3 exists in the communicable range with the first communicator 1, then moves into the communicable range with the second communicator 2, and then the second communicator. A case will be described in which the position does not return to the communicable range with the first communication device 1 within a predetermined time after being positioned outside the communicable range with the second communicator.

  As shown in FIG. 4, the first communication device 1 and the second communication device 2 transmit a CALL signal (step S1). The key 3 determines whether or not to receive a CALL signal (step S11). Initially, since the key 3 exists in the communicable range with the first communication device 1, the key 3 receives the CALL signal from the first communication device 1. When such a signal is received, the key 3 transmits ID identification data (step S13). The first communication device 1 determines whether or not to receive ID identification data (step S3), and upon receiving such ID identification data, the first communication device 1 transmits the current time as time data. (Step S7). The key 3 determines whether or not to receive time data (step S15). When such data is received, a predetermined time has elapsed by obtaining a difference between the time specified by the time data and the current time. Whether or not (step S19). The predetermined time can be arbitrarily set (for example, 20 minutes longer than the interval of the call signal).

  The person who has taken out the key 3 moves from the installation location of the first communication device 1 to the vicinity of the installation location of the second communication device 2 within a predetermined time in step S19. The key 3 determines whether or not to receive a CALL signal (step S21). The second communication device 2 transmits a CALL signal (step S1). Therefore, when the key 3 enters the communicable range with the second communication device 2, it receives the CALL signal. The key 3 determines whether or not to receive a CALL signal (step S21). When the key 3 is received, ID identification data is transmitted (step S13).

  The second communication device 2 determines whether or not to receive the ID identification data (step S3), and when receiving the ID identification data, the second communication device 2 transmits the current time as time data. (Step S7). The key 3 determines whether or not to receive this time data (step S15), and when such data is received, similarly determines whether or not a predetermined time has elapsed (step S19).

  Here, it is assumed that the key 3 does not move to the vicinity of the place where the first communication device 1 is installed within the predetermined time in step S19 after it goes out of the communicable range of the second communication device 2. Therefore, the key 3 cannot receive the next CALL signal from the second communication device 2 or the first communication device 1 within the predetermined time of step S19. Therefore, when a predetermined time has elapsed, the process proceeds from step S19 to step S23, and a buzzer is sounded as a warning (step S23).

  As described above, when a signal is periodically sent from the first communication device 1 and the second communication device 2 and a signal is not received within a predetermined time from any one of them, the buzzer provided in the key 3 is leveled. Thus, it is possible to prevent the key 3 from being taken out without checking at a specific doorway. Therefore, even when there are many outlets, it is not necessary to install warning devices at all outlets.

  In the above embodiment, the time data is transmitted to the key 3, the time data is stored, and the elapsed time is obtained by calculating the difference from the current time. It can also be used as a signal. That is, when such time data is received, the key 3 may start the timer and calculate the elapsed time. Furthermore, instead of time data, a measurement start signal may be determined in advance, and measurement may be started when the signal is received.

  In the above embodiment, the ID identification data is transmitted from the key 3 in response to the call signal, and when this is received, the time data for starting measurement is transmitted from the first communication device 1 or the second communication device 2. did. However, when the key 3 receives the call signal, the measurement process may be performed assuming that the call signal is a measurement start command.

  Moreover, in the said embodiment, although the case where the key 3 has a part which performs physical locking and unlocking was demonstrated, you may make it lock and unlock based on the said ID identification data. .

  Further, the time transmitted to the key 3 may be stored and managed by the first communication device 1 or the second communication device 2.

  In this embodiment, a buzzer is used as a warning means, but a known technique can be used as a warning means.For example, in addition to such a warning by sound, vibration, light, etc. alone or in combination, You may make it warn.

  When the key 3 exists in the storage location, the check process shown in FIG. 4 is not necessary. Therefore, it is only necessary to provide switch means for turning on the power of the key 3 for the first time when it is taken out of the storage location, for example, detecting this when it is taken out to the key 3 and turning on the power.

  In the above embodiment, the CPU is used to realize the function shown in FIG. 1, and this is realized by software. However, some or all of them may be realized by hardware such as a logic circuit.

  Note that an operating system (OS) may be used separately from the program, and a part of the processing may be performed by the OS.

  The key removal prevention system of the present invention has an effect of preventing erroneous key removal and is useful as a system for managing a key for locking and unlocking a shared room.

It is a functional block diagram of the key take-out prevention system of the embodiment of the present invention. It is a figure which shows an example of the hardware constitutions which implement | achieved the 1st communication apparatus 1 shown in FIG. 1 using CPU. It is a figure which shows an example of the hardware constitution which implement | achieved the key 3 shown in FIG. 1 using CPU. It is the whole flowchart.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ...... 1st communication device 1a ... 1st transmission / reception means 2 ...... 2nd communication device 2a ... 2nd transmission / reception means 3 .... Key 5 .... Measurement Means 7... Warning means 9... Updating means 23.
27 ... Memory

Claims (5)

A) When receiving a call signal, a key with an IC tag that returns an ID signal;
B) First transmission / reception means for repeatedly transmitting the call signal and recording the received time when receiving the ID signal, and transmitting the recorded time data to the key with the IC tag that has returned the ID signal. A first controller provided within a predetermined range from the storage location of the key with the IC tag;
C) Second transmitting / receiving means for repeatedly transmitting the call signal and receiving the ID signal, recording the received time, and transmitting the recorded time data to the IC-tagged key that has returned the ID signal. A second controller disposed apart from the first controller;
A key removal prevention system comprising:
D) The key with the IC tag is
d1) a measuring means for measuring an elapsed time when the time data is received;
d2) warning means for giving a warning when the elapsed time reaches a predetermined time;
d3) When another call signal is received after the start of the measurement, the update means causes the measurement means to newly perform a measurement process.
Key removal prevention system characterized by that. A) When receiving a call signal, a key with an IC tag that returns an ID signal;
B) First transmission / reception means is provided for repeatedly transmitting the call signal and recording the reception time when receiving the ID signal, and transmitting a measurement start signal to the key with the IC tag that has returned the ID signal. A first controller provided within a predetermined range from the storage location of the key with the IC tag;
C) Second transmission means for transmitting the call signal repeatedly and recording the reception time when the ID signal is received and transmitting a measurement start signal to the key with the IC tag that has returned the ID signal is provided. A second controller disposed away from the first controller;
A key removal prevention system comprising:
D) The key with the IC tag is
d1) When receiving the measurement start signal, measuring means for measuring the elapsed time since reception;
d2) warning means for giving a warning when the elapsed time reaches a predetermined time;
d3) an update unit that, when receiving another measurement start signal after the measurement unit starts measurement, causes the measurement unit to measure a measurement time after receiving the other measurement start signal; Having
Key removal prevention system characterized by that. A) a1) measuring means for measuring an elapsed time after receiving the call signal upon receipt of the call signal; a2) warning means for giving a warning when the elapsed time exceeds a predetermined time. A key with an IC tag,
B) a first transmission / reception unit that repeatedly transmits the call signal, the first controller provided within a predetermined range from the storage location of the key with the IC tag;
C) a second controller having second transmission / reception means for repeatedly transmitting the call signal, the second controller being disposed apart from the first controller;
A key removal prevention system comprising:
The measuring means measures an elapsed time from the time when the key with the IC tag receives another calling signal after the measurement is started,
Key removal prevention system characterized by that. When the call signal is received, it is a key with an IC tag that returns an ID signal,
Receiving means for receiving time data transmitted from the first controller or the second controller in response to the returned ID signal;
A measuring means for measuring an elapsed time when the receiving means receives the time data;
Warning means for giving a warning when the elapsed time reaches a predetermined time;
After the start of measurement, when the reception means receives another time data, an update means for updating the measurement process;
Key with IC tag equipped with. A first controller is provided within a predetermined range from the key storage location, and a second controller is provided apart from the first controller.
From the first controller and the second controller, repeatedly transmits the call data to the key,
With the key, it is determined whether a predetermined time has elapsed when no call data has been received from the first controller or the second controller, and a predetermined time has elapsed with no call data being received. In such a case, a key take-out prevention method is characterized in that a warning is issued with the key.

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