JP2009191462A - Electronic lock system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic lock system which has a lock body set in an internal section which outsiders cannot make contact with, by using an oscillation sensor, and can avoid breakage thereof by tampering etc. <P>SOLUTION: The electronic lock system 1 is formed of: the lock body 2 which stores therein ID information and protrudes/withdraws a gate bar 2A therefrom/therein; and a key means 3 which stores therein the ID information, and can carry out radio transmission to the lock body 2. When the ID information is radio-transmitted from the key means 3, if the ID information of the key means 3 coincides with the ID information of the lock body 2, the lock body 2 protrudes/withdraws the gate bar 2A of the lock body 2, and carries out locking/unlocking operation. The lock body 2 is provided with the oscillation sensor 11 for detecting oscillation of the lock body 2, and upon reception of an oscillation signal from the sensor, provided that an oscillation frequency falls in a set range, the lock body supplies electric power to the key means 3 by electromagnetic induction, and the ID information is transmitted by radio from the key means 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic lock system using RFID (Radio Frequency IDentification).

  Conventionally, as with latches and padlocks, it has been known to lock doors such as furniture and desks, drawers, etc. using electronic locks (see, for example, Patent Document 1).

  As such a thing, what is shown, for example in FIG. 7 is known. That is, the lock body 101 is attached to the opening / closing part of the furniture or glass case as a retrofit, and when the switch 103 which is a part of the lock body is pressed by the key means 102, the lock body 101 is turned off by the control of the CPU 104. The state changes from the (standby state) to the ON state (operating state), and power is supplied from the antenna coil 105 provided in the lock body 101 to the key means 102 (passive tag) by electromagnetic induction.

Thus, when the lock body 101 is turned on by the operation of the key means 102, the ID information held by the key means 102 is transmitted to the lock body 101, and the ID information is the ID information registered in the lock body 101 in the CPU 104. It is determined whether or not there is any registered ID information, the motor 106 operates and the kanuki 107 operates in the locking direction. In addition, when the switch 103 is pressed by the key means 102 in the locked state, the kanuki 107 operates in the unlocking direction, contrary to the case described above. Note that a dry battery 108 is provided as a power source.
JP-A-6-193320 (FIG. 3)

  When a part of the lock body 101 (switch 103) is pressed with the key means 102 having ID information, the lock body 101 is turned on, receives the ID information transmission radio wave from the key means 102, and the cannula 107 is unlocked. Therefore, the lock body 101 and the key means 102 must be in contact with each other. Further, since the lock body 101 is configured to come into contact with the key means 102, it must be installed outside where anyone can touch, and there is a risk of being destroyed by mischief or the like.

  In order to avoid such a fear, it is conceivable that the lock body is provided in an interior that cannot be touched by others (for example, in a sliding door of a glass case such as a show window or a furniture drawer such as a chiffon). When the lock body is provided in the interior, a part of the lock body (switch) cannot be pressed with the key means, and a dry battery (or rechargeable battery) is used as the power source. It is also impossible to enter the state (operating state), and it is necessary to keep the power supply in the OFF state (power saving standby state) when not operating.

  Therefore, the inventor uses the vibration detecting means to apply the vibration only when necessary, thereby detecting the vibration and turning on the power of the lock body, thereby reducing the power consumption described above. The inventors have conceived that problems such as the above can be avoided and have arrived at the present invention.

  It is an object of the present invention to use a vibration detection means so that the lock body can be provided in an interior that cannot be touched by others, thereby avoiding destruction due to mischief or the like.

The invention of claim 1 includes a lock main body having ID information corresponding to a cannid that can appear, and key means that has ID information corresponding to the lock main body and enables wireless transmission to the lock main body.
The lock body receives antenna information for receiving wireless transmission from the key means, ID information from the key means, and whether the ID information on the key means side matches the ID information on the lock body side And an ID determination means for determining whether or not the ID determination means matches the ID information of the electronic lock system that causes the kanuki of the lock body to appear and perform a locking operation or an unlocking operation, The lock body has a power source that is a dry battery or a rechargeable battery, a vibration detection means that detects vibration when the lock body vibrates, and a detection signal from the vibration detection means to detect vibration of the lock body. A power supply determination means for transmitting a power supply signal to the antenna means, wherein the antenna means supplies power to the key means by electromagnetic induction when receiving the power supply signal, and the key The stage, characterized in that the ID information transmittable state.

  In this way, by providing the vibration detecting means, the key means can be set in a state where ID information can be transmitted by power supply by electromagnetic induction from the lock body side without directly touching the lock body with the key means. Can do. As a result, there is no restriction on the place where the lock body is attached. For example, it can be attached to furniture or a glass case, and it can be prevented from being touched by others. .

  In this case, as described in claim 2, the power feeding determination means determines whether or not the vibration frequency of the lock body is a frequency within a preset setting range based on a detection signal from the vibration detection means. A signal output for outputting a feeding signal to the antenna means within a predetermined time when receiving a signal from the frequency determining means and a signal from the frequency determining means and determining that the vibration has a frequency within the set range. Means.

  In this way, the operating state is activated only when it is determined that the vibration frequency of the lock body is within the set range, and in other cases, the power saving standby state is achieved. I can plan.

  Therefore, in the case of using RFID, it is advantageous when using a dry battery or a rechargeable battery as a power source that cannot be always in an operable state due to a problem of power consumption.

  The voltage of the power supply is lower than a set voltage prior to power supply by electromagnetic induction to the key means in response to a signal from the driving means for raising and lowering the kanuki and the signal output means. Voltage determining means for determining whether or not the voltage is received, and when the voltage of the power supply is equal to or lower than a set voltage in response to a signal from the voltage determining means, the driving means performs the unlocking operation and remains in the unlocked state It is desirable to provide drive control means for stopping. Here, the “set voltage” is a voltage that enables the unlocking operation by driving at least once, although the drive means cannot be driven repeatedly.

  In this way, it is avoided that the unlocking operation cannot be performed due to a decrease in the voltage of the power source (dry battery or rechargeable battery), and the locked state is not maintained.

  According to a fourth aspect of the present invention, the power supply determination unit includes a timer unit that counts an elapsed time after the signal output unit outputs a power supply signal to the antenna unit, and the signal output unit includes the antenna It is desirable that the power supply signal output be stopped when the antenna means does not receive the radio transmission from the key means within the predetermined time upon receiving signals from the means and the timer means.

  In this way, when the antenna means does not receive the radio transmission from the key means even when it is determined that the vibration frequency of the lock body is a frequency within the set range, the antenna means The output of the power supply signal to is stopped and the system returns to the standby state to save power.

  Since the present invention is configured as described above, there is no restriction on the mounting location of the lock body, and it can be mounted inside, for example, furniture or a glass case. In addition, since the lock body is inside that cannot be touched by others, destruction due to mischief or the like can be avoided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram showing an embodiment of an electronic lock system according to the present invention.

  As shown in FIG. 1, the electronic lock system 1 uses a well-known RFID, and includes a lock body 2 (tag reader) and key means 3 (passive tag). The lock body 2 has a kanuki 2 </ b> A that can appear and disappear from the casing, and has registered unique ID information. The key means 3 enables wireless transmission to the lock body 2 and has ID information corresponding to the registered ID information on the lock body side. When the lock body 2 receives ID information (ID information signal) from the key means 3 and the ID information on the key means 3 side and the ID information on the lock body 2 side match, the lock body 2A of the lock body 2 appears and disappears. Thus, the locking operation or the unlocking operation is executed.

  The lock body 2 has a vibration sensor 11 (vibration detecting means) that detects vibration when the lock body 2 vibrates and a detection signal from the vibration sensor-11, and the vibration frequency of the lock body 2 is preset. When the frequency is within the set range, the key unit 3 is activated by electromagnetic induction, and the key unit 3 is provided with a power supply determination unit 12 which makes the ID information transmittable state.

  The power feeding determination means 12 includes a frequency determination means 12A for determining whether the vibration frequency of the lock body 2 is within the set range based on a detection signal from the vibration sensor-11, and a signal from the frequency determination means 12A. And a signal output means 12B for outputting a feeding signal to the antenna coil 13 (antenna means) within a predetermined time when it is determined that the frequency is within the set range. When the antenna coil 13 receives the power feeding signal, the antenna coil 13 enters an operation state in which the key means 3 is activated by electromagnetic induction. The power feeding determination means 12 includes a timer means 12C that counts an elapsed time after the signal output means 12B outputs a power feeding signal to the antenna coil 13, and the signal output means 12B includes the antenna coil 13 and the timer means 12C. When the antenna coil 13 does not receive wireless transmission from the key means 3 within the predetermined time, the output of the power feeding signal is stopped to save power. The frequency determination unit 12A, the signal output unit 12B, and the timer unit 12C are configured as a part of the CPU 21. It should be noted that the signal from the vibration sensor 11 is set so that a necessary frequency can be detected by cutting an extra frequency as much as possible by the filter 16 so as not to cause a malfunction due to wind or the like.

  Further, a dry battery 14 (or a rechargeable battery) is provided as a power source, and a drive motor 15 is provided as a drive means for moving the cannula 2A in and out.

  The CPU 21 receives the detection signal from the signal output unit 12B and the drive control unit 21A that controls the drive motor 15 (drive unit) in addition to the frequency determination unit 12A, the signal output unit 12B, and the timer unit 12C. Prior to the power supply by electromagnetic induction to the key means 3, the voltage determination means 21B for determining whether or not the voltage of the dry battery 14 (power supply) is equal to or lower than the set voltage, and the ID information transmitted from the key means 3 ID determination means 21C for determining whether or not the registered ID information matches.

  The drive control means 21A receives signals from the voltage determination means 21B and the ID determination means 21C, and controls the drive motor 15 to lock only when the power supply voltage exceeds the set voltage and the ID information matches. The operation is performed or the unlocking operation is performed. When the voltage from the voltage determination unit 21B is received and the voltage of the dry battery 14 is equal to or lower than the set voltage, the driving motor 15 is driven to perform the unlocking operation. It is designed to stop in the unlocked state.

  As shown in FIGS. 2 and 3, the lock body 2 is attached to each sliding door 31 </ b> A of the glass case 31. When a user applies vibration to the lock body 2 from the outside with a finger or the like, the lock sensor 2 is attached to the vibration sensor 11. Is detected, and the ID information is confirmed by bringing the key means 3 within a certain period of time, the drive motor 15 is driven and controlled, and the locking operation of engaging the cannula 2A with the cannula stopper 32 of the case body 31B is performed. Or an unlocking operation for releasing the engagement of the cannula 2A. Needless to say, the lock body 2 can be attached to the bottom surface of the case body 31B as shown in FIG.

  Therefore, if comprised as mentioned above, when the vibration of the preset frequency range is provided with respect to the lock body 2, the vibration sensor 11 will detect it, and the lock body 2 will be in a standby state (OFF state). To the operating state (ON state). Except when the dry battery 14 is in a low voltage state lower than the set voltage, when the key means 3 is approached from the outside while the operation state is maintained for a certain time (for example, several seconds), the key means from the antenna coil 13 3 is supplied with electric power by electromagnetic induction. As a result, the key means 3 is activated and the ID information of the key means 3 is transmitted (returned) to the lock body 2, and if the ID information matches the ID information registered in the lock body 2, The drive motor 15 operates and the cannula 2A operates in the locking direction. When the vibration is detected and the key means 3 cannot be recognized within the predetermined time in the operating state, the process returns to the standby state.

  In addition, when vibration is once again applied from the outside in the locked state, the cannula 2A operates in the unlocking direction by operating the drive motor 15 in the direction opposite to that described above.

  And even if a vibration is detected and it will be in an operation state, if the dry battery 14 is a low voltage state, Kanuki 2A will maintain an unlocked state and will stop. Therefore, the battery 14 can be replaced.

  Specifically, as shown in FIG. 5, when starting by loading or replacement of the dry battery 14, first, a standby state is entered (step S1), and it is determined whether or not the lock body 2 vibrates (step S2). ). This determination is repeated until vibration is detected, and during that time, a standby state in which power is not supplied from the dry battery 14 to the antenna coil 13 is maintained.

  When vibration is detected, it is determined whether or not the vibration is a set frequency, that is, a frequency within a preset range (step S3). Is in an operating state in which the antenna coil 13 is supplied by electromagnetic induction (step S4). If it is not within the set range, the process returns to step S1 and enters a standby state.

  When the operating state is reached, it is subsequently determined whether or not the voltage is low (step S5). If the voltage is low, there is a possibility that the LED does not operate normally, so an LED (not shown) is turned on (step S6). ) If the cannula 2A is in the locked state, the unlocked state is set, and if it is in the unlocked state, it is stopped as it is (step S7). This stop state is maintained until the dry battery 14 is replaced, and returns to the standby state by replacing the dry battery 14 (step S8).

  On the other hand, if it is not in a low voltage state, it is considered that it operates normally. Therefore, it is subsequently determined whether or not the key means 3 has approached the lock body 2 (step S9), and the antenna coil 13 is in an operating state. If the key means 3 does not approach within a certain period of time (for example, several seconds), it is considered that the user has no intention to unlock, and thus returns to the standby state. On the other hand, when the key means 3 approaches within a certain time, the antenna coil 13 is in an operating state, so that electric power is supplied from the lock body 2 to the key means 3 through the antenna coil 13 by electromagnetic induction (step S10). Is activated and ID information is transmitted from the key means 3 toward the antenna coil 13 (step S11). That is, the key means 3 can be operated using the power supplied from the antenna coil 13 by electromagnetic induction as an energy source. With this power supply, the key means 3 is activated, and the ID information is transmitted to the antenna coil 13 side by a 13.5 MHz carrier wave.

  Next, it is determined whether or not the ID information held by the key means 3 is registered ID information held by the lock body 2 (step S12). If the ID information is already registered in the lock body 2, the motor 15 is turned on. The operation is performed (step S13), the cannula 2A is moved in and out (step S14), the locking operation or the unlocking operation is performed (step S15), and the process returns to the standby state. On the other hand, if it is determined in step S12 that the ID information is not already registered in the lock body 2, the operation immediately returns to the standby state without any operation.

  In the above-described embodiment, the lock body is provided on the sliding door of the glass case such as the show window. However, the present invention is not limited to this, and for example, as shown in FIG. It is also possible to provide the lock body 2 on 41A. In the case of this embodiment, a recess 41Ba is provided on the main body 41B side of the furniture 41 so that the cannulas 2A can be engaged and disengaged. However, as in the embodiment shown in FIGS. Needless to say, it may be provided.

It is a schematic structure figure showing one embodiment of an electronic lock system concerning the present invention. It is explanatory drawing of the example of application of the said electronic lock system. It is explanatory drawing of the example of application of the said electronic lock system. It is explanatory drawing of the example of application of the said electronic lock system. It is a follow chart figure which shows the flow of a process. It is explanatory drawing of the example of application of the said electronic lock system. It is a figure similar to FIG. 1 about a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic lock system 2 Lock | rock main body 2A Kannuki 3 Key means 11 Vibration sensor 12 Power supply determination means 12A Frequency determination means 12B Signal output means 12C Timer means 13 Antenna coil 14 Dry cell 15 Drive motor 21 CPU
21A Drive control means 21B Voltage determination means 21C ID determination means

Claims (4)

A lock main body having ID information corresponding to a cannid that can appear, and key means that has ID information corresponding to the lock main body and enables wireless transmission to the lock main body,
The lock body receives antenna information for receiving wireless transmission from the key means, ID information from the key means, and whether the ID information on the key means side matches the ID information on the lock body side ID determining means for determining
An electronic lock system that, when the ID information is matched by the ID determination means, causes the kanuki of the lock body to appear and disappears, and performs a locking operation or an unlocking operation,
The lock body is
A power source that is a dry battery or a rechargeable battery;
Vibration detecting means for detecting the vibration when the lock body vibrates;
A power feeding determining means for receiving a detection signal from the vibration detecting means and detecting a vibration of the lock body and transmitting a power feeding signal to the antenna means;
The electronic lock system according to claim 1, wherein when the power supply signal is received, the antenna means supplies power to the key means by electromagnetic induction so that the key means can transmit ID information. The power feeding determining means includes
Frequency determining means for determining whether the vibration frequency of the lock body is a frequency within a preset setting range based on a detection signal from the vibration detecting means;
And a signal output means for outputting a power feeding signal to the antenna means within a predetermined time when the signal from the frequency judging means is received and it is determined that the vibration has a frequency within the set range. The electronic lock system according to claim 1. A driving means for causing the kanuki to appear and disappear,
Voltage determination means for receiving a signal from the signal output means and determining whether the voltage of the power source is equal to or lower than a set voltage prior to power supply by electromagnetic induction to the key means;
Drive control means for receiving a signal from the voltage determination means and causing the drive means to perform an unlocking operation when the voltage of the power supply is equal to or lower than a set voltage, and stopping the unlocked state. The electronic lock system according to claim 2. The power feeding determining means includes timer means for counting an elapsed time after the signal output means outputs a power feeding signal to the antenna means,
The signal output means receives the signals from the antenna means and the timer means, and stops the output of the power feeding signal when the antenna means does not receive wireless transmission from the key means within the predetermined time. The electronic lock system according to claim 2, wherein the electronic lock system is provided.

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