JP2003097114A - Electric lock device - Google Patents

Abstract

(57) [Summary] [Problem] To make it possible to easily set a key on an electric lock even when it is difficult to imitate the key and in a dark place. SOLUTION: When a push button switch of a key 6 is operated, a backlight LED 13 is turned on, whereby the front side of the key 6 is illuminated. When the key 6 is pressed against the electric lock 3, the identification code is displayed on the liquid crystal display 12 as a QR code. The QR code is imaged on the image sensor 23 of the electric lock 3, and when a code obtained by decoding the QR code formed on the image sensor 23 matches a code stored in advance, the electric lock 3 Performs an unlocking or locking operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock device for electrically locking and unlocking, and more particularly to an electric lock device in which an identification code for locking and unlocking is converted into an information code image and sent from a key side to an electric lock side.

[0002]

Conventionally, electric lock devices for electrically locking and unlocking doors and the like have been used in houses and the like. In this electric lock device, as means for sending a signal for locking / unlocking from the key side to the electric lock side, one that is magnetically coupled, one that is contact type IC card,
Alternatively, there is a non-contact type IC card.
However, the magnetic coupling method has a problem in that the identification code can be read relatively easily and easily imitated. Further, the contact type IC card has a problem that it is difficult to operate in a dark place because the card has to be inserted into a narrow insertion slot, and the non-contact type IC card has a problem.
The electric lock side has to be in a standby state at all times in order to detect an IC card set, which causes a problem of high power consumption.

The present invention has been made in view of the above circumstances, and an object thereof is to imitate, a key can be set in a state where the electric lock side is illuminated, and the electric lock is not always in a standby state. It is to provide an electric lock device capable of detecting a set of keys.

[0004]

According to a first aspect of the present invention, there is provided an electric lock device comprising a key and an electric lock for electrically locking / unlocking the key, wherein the key has a storage means for storing an identification code and a light emission. Display means, operating means, and control means for converting the identification code into an information code image based on the operation of the operating means and displaying the information code image on the display means. It is characterized in that it is configured to read the information code image and control the lock mechanism section.
According to this means, since the data is sent from the key to the electric lock by the information code image, it is difficult to imitate the information code image, and the security effect is increased.

According to the invention of claim 2, the electric lock,
Storage means for storing the identification code, optical reading means for reading the information code image displayed on the display of the key, and data for decoding the information code image read by the optical reading means and storing the data. It may be configured to include a comparison means for comparing with the identification code stored in the means, and a control means for controlling the locking mechanism section according to the comparison result by the comparison means.

According to a third aspect of the present invention, the key is provided with a sensor for detecting that the key is set at a predetermined position in relation to the electric lock, and when the operation means is operated, the display is displayed. The information code image is displayed on the display means when the means is caused to emit light and the detection operation of the sensor is performed. With this means, when the operating means is operated, the display means emits light, so that even when the surroundings are dark, it is possible to operate with the place where the key is set illuminated.

According to a fourth aspect of the present invention, the sensor has a pressing element, and the pressing element comes into contact with a protrusion provided on the member on the electric lock side to move to perform a detection operation. Can be

According to a fifth aspect of the present invention, the outer shell of the key is provided so as to project from the key body provided with the display means and in a direction substantially perpendicular to the display screen of the display means from the key body. It is characterized in that it has a flat grip portion provided with a flat battery as a power source. According to this, the display screen can be opposed to the electronic lock in a state where the grip portion is sandwiched between the fingers, and the operation is easy.

According to the sixth aspect of the invention, since a flat battery for backup is provided on the outer shell of the key, it is possible to eliminate the problem that the electronic lock cannot be unlocked because the power supply is lost.

According to a seventh aspect of the present invention, the electric lock includes a sensor for detecting that the key is set at a predetermined position in relation to the electric lock. Since it is connected, you do not have to leave it in a standby state at all times.

According to an eighth aspect of the present invention, a plurality of identification codes are stored in the key storage means, and information code images of these identification codes are sequentially displayed on the display means for a predetermined period of time.
The unlocking operation is carried out when at least one decoded data of the plurality of information code images displayed on the display means matches the identification code stored in the storage means of its own. According to this means, for example, only one key of the electric lock provided at the gate, the entrance, and the door is required.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings by applying it to an electric lock device for a front door of a house. FIG. 5 shows the front door 1, which is the door 1.
Is provided with a unitized electric lock 3 incorporated in a metal casing 2. Although not shown, the electric lock 3 is, as is well known, a lock mechanism unit 4 (FIG. 4) including a lock element and an electric power source including a motor or a solenoid for switching the lock element between a locked state and an unlocked state. See) is the main constituent. Further, the electric lock 3 is provided with a knob 5 for opening and closing the door 1. In the present invention, locking means locking the door 1 in a closed position so that it cannot be released, and unlocking means:
Say to unlock the lock.

FIG. 5 also shows a key 6 for unlocking the electric lock 2. The key 6 is for presenting an identification code to the electric lock 2 in a two-dimensional information code image, for example, a QR code image as shown in FIG. 8, to unlock and unlock, and the casing 7 constituting the outer shell thereof is Square key body 8
And a flat gripping portion 9 provided in a protruding state on one end side of the key body 8.

The key 6 is, as shown in the block diagram of FIG. 7, a control unit 10 serving as control means, a storage unit 11,
Display 12 made of liquid crystal as display means, display 12
LED 13 as a backlight light source, a push button switch 14 as an operating means, a contact sensor 15 for detecting that the key 6 is pressed against the electric lock 2, a communication interface 16, an operating battery 17, and a backup battery 18. And so on.

The control unit 10 is composed of a microcomputer and operates according to a program stored in a ROM (not shown). The storage unit 11 is composed of an erasable read-only memory such as an EEPROM and stores an identification code for unlocking. This identification code is input from, for example, a management computer (not shown) of an electronic lock vendor, and the identification code is input by connecting the communication interface 16 to the management computer.

In the ROM of the control unit 10, the identification code Q
A program for converting into R code is stored. Then, the control unit 10 displays the converted QR code image on the display unit 12. The display 12 is shown in FIG.
As shown in, the key 6 is provided in the key body 8 and is arranged so that the display screen on the front surface is orthogonal to the grip portion 9. The display screen of the display unit 12 can be viewed from the front opening of the key body 8, and the transparent glass 19 is attached to the front opening.

The push button switch 14 is a QR switch for the display 12.
The operation for starting the display of the code image is performed. The operation is arranged in the grip portion 9, and as shown in FIG.
Protruding from the outer surface of the. The contact sensor 15 detects that the front surface of the key body 8 is pressed against a predetermined portion of the electric lock 3, that is, the bottom surface of a rectangular shallow bottom recess 20 formed on the front surface of the casing 2 of the electric lock 3. It is for the purpose of being provided in the key body 8.

The contact sensor 15 is composed of a push button type switch, and as shown in FIG. 1, a pair of electrodes 15a and 15b,
A push button 15c serving as a pusher, a contact 15d mounted on the push button 15c, and a compression coil spring 15e for urging the push button 15c in a direction of separating the push button 15c from the electrodes 15a and 15b are provided. On the other hand, in a predetermined portion of the shallow bottom recess 20 of the electronic lock 3,
A protrusion 21 is provided so as to correspond to the push button 15c of the contact sensor 15. The front surface of the key body 8 has a shallow recess 20.
When pressed against the bottom surface of the, the push button 15c comes into contact with the protrusion 21 and is relatively pressed and moved in the process. This push button 1
Due to the relative movement of 5c, the contact 15d becomes a pair of electrodes 15
It enters between a and 15b to establish electrical connection between them (switch-on; detection operation).

The operating battery 17 and the spare battery 18 are
It is a flat type called a button type and is housed in the grip portion 9 together. The operation battery 17 is an operation power supply such as the control unit 10. When the operation power supply 17 runs out of charge, the lid 9a of the grip 9 is opened to replace the backup battery 18 with the operation battery 17. To replace.

FIG. 6 shows the electrical construction of the electric lock 3. As shown in FIG. 6, the electric lock 3 includes a control section 22, an image sensor 23 as an optical reading means, and a driver circuit 2.
4, a lock detection sensor 25, a lock display LED 26, an unlock display LED 27, a storage unit 28, a switching circuit 29, a switch circuit 30, a key sensor 31, a communication interface 32, an operation battery 33, a backup battery 34, etc. ing.

The control unit 22 is composed of a microcomputer and operates according to a program stored in a ROM (not shown). The image sensor 23 is the display 1 of the key 6.
It is for reading the QR code image displayed on the display 2, and is composed of an area sensor in which CCDs are vertically and horizontally arranged. As shown in FIG. 1, the image sensor 23 is disposed deeper than an opening 35 formed in the central portion of the shallow bottom recess 20, and an image is formed between the opening 35 and the image sensor 23. A lens 36 is provided.

A program for decoding the QR code is stored in the ROM of the control unit 22. The QR code read by the image sensor 23 is
The identification code decoded by the control unit 22 and stored in the storage unit 28 is compared. This identification code is the same as the identification code stored in the storage unit 11 of the key 6, and is input via a communication interface 32 from a management computer of an electronic lock vendor (not shown).

The driver circuit 24 is controlled by the control unit 22 to drive the electric power source of the lock mechanism unit 4. The lock detection sensor 25 detects that the lock mechanism 4 is in the locked state based on the position of the lock member (not shown) of the lock mechanism unit 4. The lock display LED 26 and the unlock display LED 27 are provided side by side on the outer surface of the casing 2, as shown in FIG. Then, the control unit 22 is configured to turn on the lock display LED 26 and the unlock display LED 27 according to the detection result of the lock detection sensor 25.

The operating battery 32 or the spare battery 33 is
It functions as a power supply for operation and is connected to the switching circuit 29. The switching circuit 29 always connects the operating battery 32 to the switching circuit 30. The control unit 22 detects the amount of electricity stored in the operating battery 32 and the spare battery 33 via the switching circuit 29 during its operation, and when the amount of electricity stored in the operating battery 32 becomes small, the controller 22 replaces the operating battery 32 with the spare battery. The battery 33 is connected to the switch circuit 30.
Then, when the amount of electricity stored in the spare battery 33 also decreases, the control unit 22 causes the locking display LED 26 to blink, for example, to notify this, and also prevents the locking mechanism unit 4 from performing the locking operation. As a result, it becomes possible to prevent the inability to unlock.

The switch circuit 30 is turned on based on the detection operation of the key sensor 31 to supply power to the control unit 22 and the like, and is turned off according to an off command signal from the control unit 22 to supply power to the control unit 22 and the like. Is being cut off. In the key sensor 31, the key body 8 has a shallow bottom recess 20.
It is for detecting that the QR code image displayed on the display 12 is set at a position where it is imaged on the image sensor 23.
The key sensor 31 is composed of a push button type switch similar to the contact sensor 15 and has a pair of electrodes 31a and 31b.
A push button 31c as a pusher, a contact 31d, and a compression coil spring 31e.

The push button 31c of the key switch 31 projects into the shallow recess 20. When the front surface of the key body 8 is pressed against the bottom surface of the shallow recess 20, the key body 8 pushes the push button 31c in the process. Press and move. By this movement of the push button 31c, the contact point 31d enters between the pair of electrodes 31a and 31b to bring them into conduction (switch-on; detection operation).

Next, the operation of the above configuration will be described with reference to the flowcharts of FIGS. When locking or unlocking the electric lock 3, first, the push button switch 14 of the key 6 is pressed.
Turn on. Then, the control unit 10 starts operating,
Begin executing the routine of FIG. When the execution of the routine of FIG. 3 is started, the control unit 10 first sets the LE for backlight.
D13 is turned on and the display 12 is set in a state in which the light from the LED 13 is transmitted (step S1). Then L
The light from the ED 13 passes through the display 12 and illuminates the front of the key body 8.

Next, the control unit 10 is in a state of judging whether or not the contact sensor 15 has performed the detection operation (step S).
2). When the key body 8 is pressed against the shallow recess 20 in this state, the contact sensor 15 of the key 6 performs a detection operation, so the control unit 10 reads the identification code from the storage unit 11 (step S3), and then reads it. The identification code is converted into QR code data (step S4), and the QR code image is displayed on the display 12 (step S5). The light emitted from the display device 12 displaying this QR code image enters the opening 35 of the electronic lock 3 from the transparent glass 19 of the key body 8, and then is formed on the image sensor 23 of the electronic lock 3 by the imaging lens 36. Is imaged. The control unit 10 of the key 6
When the control unit 10 displays the QR code image on the display 12 and a certain time has passed (“YES” in step S6), the control ends.

On the other hand, the key sensor 31 of the electronic lock 3 has a key body 8 when the key body 8 is pressed against the shallow recess 20.
The push button 31c is pressed by the ON operation (detection operation)
Then, based on this, the switch circuit 30 is turned on to supply power to the control unit 22 and the like. As a result, the control unit 22 starts operating and starts executing the routine of FIG.

When execution of the routine of FIG. 2 is started, the control section 22 first causes the image sensor 23 to expose (optically read) the QR code image (step A1), and then Q
The R code image is decoded (step A2). After that, the control unit 22 reads the identification code stored in the storage unit 28 (step A3), and compares the decoded data of the QR code with the identification code (step A4; comparing means).

After that, the control unit 22 judges whether the decoded data of the QR code and the identification code match (step A5), and if they do not match, it is not a normal key ("NO"). )) Is unlocked and the end is reached. If the two match, the control unit 22 determines that the key is a normal key in step A5 (“YES”), and then determines whether the lock mechanism unit 4 is currently in the locked state (step A6).

By the signal from the lock detection sensor 25,
When it is determined that the lock mechanism unit 4 is in the locked state (“YES” in step A6), the control unit 22 proceeds to step A7 to operate the driver circuit 24 to set the lock mechanism unit 4 in the unlocked state, Then, the lock display LED 26 is turned off and the unlock display LED 27 is turned on (step A8). When it is determined that the lock mechanism unit 4 is in the unlocked state (“NO” in step A6), the control unit 22 proceeds to step A9 to operate the driver circuit 24 to lock the lock mechanism unit 4. Then, the unlock display LED 27 is turned off and the lock display LED 26 is turned on (step A10).

Then, in step A8, the unlocking display LED
28 is turned on, or L is used for lock display in step A110.
After turning on the ED 27, the control unit 22 performs step A11.
Then, it is determined whether the key sensor 31 has completed the detection operation (the key 6 has been separated from the shallow recess 20), and the switch circuit 30 is turned off when the key sensor 31 has completed the detection operation. Then, the power supply to the control unit 22 and the like is cut off (step A12), and the process ends.

As described above, according to this embodiment, when the push button switch 14 of the key 6 is operated, the backlight LED 1
3 lights up, the light passes through the display 12 and the key body 8
Since it will illuminate the front of the door, the door 1
The shallow bottom concave portion 20 can be easily found, and the operation becomes easy.

Further, since it is determined whether or not the key for unlocking the electric lock 3 is a proper key by the QR code image,
The key 6 is less likely to be imitated and the security is superior to the configuration in which the identification code is transmitted from the key to the electric lock by magnetic coupling.

In this case, the display of the QR code image on the display 12 is performed on condition that the key body 8 is pressed against the shallow recess 12 and the contact sensor 15 performs the detection operation.
The QR code image is displayed only when the opening for viewing the QR code image is blocked, which makes it more difficult to imitate.

Further, since the flat grip portion 9 is orthogonal to the display screen of the display 12, the front surface of the key body 8 is shallow with the grip portion 9 sandwiched between the thumb and the index finger, for example. It becomes easy to perform the operation of pressing the bottom recess 20.

In the electric lock 3, the key body 8 has a shallow bottom recess 2
Since power is supplied to the control unit 22 and the like on condition that the operating battery 32 is set to 0, it is possible to reduce wasteful power consumption of the operating battery 32.

The present invention is not limited to the embodiments described above and shown in the drawings, and the following expansions and modifications are possible. The power supply for the electric lock 3 may be obtained from a commercial AC power supply. QR as the information code
It is not limited to a code, but may be another two-dimensional code,
Further, it may be a one-dimensional code such as a barcode.
The display means is not limited to liquid crystal, and may be EL or the like. In the case of the display means such as EL which emits light by itself, the illumination means for the backlight is unnecessary. The present invention can be applied not only to the electric lock device for a door for a house but also to the electric lock device for a door at a collective entrance of an apartment house and other electric lock devices for general doors.

A plurality of identification codes are stored in the storage unit 11 of the key 6, and the push button switch 14 is operated to cause the contact sensor 15 to operate.
When the detection operation is performed, the information code images of these identification codes are sequentially displayed on the display 12 for a predetermined time (the time when the electric lock can be read, for example, 0.2 seconds).
When at least one piece of decoded data obtained by decoding a plurality of information code images displayed on the display unit 12 matches the identification code stored in the storage unit 28, the unlocking operation is performed. It may be configured. According to this, it is possible to operate the electric locks provided at the gate, the entrance, and the doorway with one key. In this case, the information code images of a plurality of identification codes may be repeatedly displayed on the display unit 12 at predetermined time intervals. In addition, the lock is unlocked when, for example, the decoding code of the second information code image displayed and the identification code stored in the electric lock match, instead of one of the plurality of information code images displayed in sequence. It is safer to configure Further, for example, even if it is an electric lock of a self-reliant mouth, it may be checked whether it matches the information code of the entrance or the gate.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an electric lock and a key according to an embodiment of the present invention.

FIG. 2 is a flowchart of key operation contents.

FIG. 3 is a flowchart showing the operation contents of the electric lock.

FIG. 4 is a transverse plan view of the key.

FIG. 5 is a perspective view of an electric lock and a key.

FIG. 6 is a block diagram showing an electrical configuration of an electric lock.

FIG. 7 is a block diagram showing an electrical configuration of a key.

FIG. 8 is a diagram showing an example of a two-dimensional code.

[Explanation of symbols]

In the figure, 1 is a door, 2 is a casing, 3 is an electric lock, 4 is a lock mechanism portion, 6 is a key, 7 is a casing, 8 is a key body, 9
Is a grip section, 10 is a control section (control means), 11 is a storage section (storage means), 12 is a display (display means), 13 is a backlight LED, 14 is a push button switch (operation means),
Reference numeral 15 is a contact sensor (sensor), 17 is an operating battery (flat battery), 18 is a spare battery (flat battery), 20 is a shallow recess, 21 is a protrusion, 22 is a control unit (control means, comparison means). Means), 23 is an image sensor (optical reading means), 28
Is a storage unit (storage means), 31 is a key sensor (sensor),
Reference numeral 33 is a battery for operation (power supply for operation).

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E250 AA02 BB05 BB08 BB27 CC11                       CC16 DD06 FF08 FF18 FF22                       FF37 GG05 GG13                 5B072 BB09 CC21

Claims (8)

[Claims] 1. An electric lock device comprising a key and an electric lock for electrically locking and unlocking the key, wherein the key has a storage means for storing an identification code, a display means for emitting light, an operating means, and this operation. Control means for converting the identification code into an information code image based on the operation of the means and displaying the information code image on the display means, wherein the electric lock controls the lock mechanism section by reading the information code image displayed by the key. An electric lock device having the above-mentioned configuration. 2. The electric lock includes storage means for storing an identification code, optical reading means for reading an information code image displayed on the display of the key, and an information code image read by the optical reading means. Comparing means for comparing the data obtained by decoding the data with the identification code stored in the storage means,
The electric lock device according to claim 1, further comprising control means for controlling the lock mechanism portion according to a comparison result by the comparison means. 3. The key comprises a sensor for detecting that the key is set at a predetermined position in relation to the electric lock, and makes the display means emit light when the operating means is operated, 3. The electric lock device according to claim 1, wherein the information code image is displayed on the display means when the sensor performs a detection operation. 4. The sensor is configured to have a pusher, and the pusher comes into contact with a protrusion provided on the member on the electric lock side to move to perform a detection operation. The electric lock device according to claim 3. 5. An outer shell of the key is provided with a key body provided with the display means, and protruding from the key body in a direction substantially perpendicular to a display screen of the display means, and a flat battery as an operation power source. An electric lock device according to any one of claims 1 to 4, further comprising a flat grip portion provided with. 6. The electric lock device according to claim 5, wherein a spare flat battery is provided on the outer shell of the key. 7. The electric lock comprises a sensor for detecting that the key has been set at a predetermined position in relation to the electric lock, and when the sensor operates for detection, it is connected to an operating power source. The electric lock device according to any one of claims 1 to 6, which is characterized. 8. The key stores a plurality of identification codes in the storage means, sequentially displays information code images of these identification codes on the display means for a predetermined time, and an electric lock is displayed on the display means. 8. The electric lock according to claim 2, wherein the unlocking operation is performed when at least one decoded data of the plurality of information code images corresponding to the identification code stored in its own storage means. Locking device.