JPS63280170A - Electronic locking system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric locking system that opens and closes a lock using an electric signal.

[Conventional technology]

Conventionally, in this type of electric locking system, the electric signal that activates the lock opening/closing operation is a signal that electrically replaces the opening/closing operation using a mechanical key, or an electric signal read from a magnetic card or the like.

FIG. 6 is a diagram showing an example of the locking system mentioned above.

In this system, when a person who wants to open or close the lock inserts a mechanical key 11 into a keyhole 12 in a door knob 14 and turns it, an internal electric switch 13 is turned on. A lock (not shown) is generated by an electrical signal generated by
It has a structure that controls the opening and closing operations.

[Problem that the invention seeks to solve]

The conventional locking system described above has a drawback in that the key input portion is large and conspicuous because the key input portion has a shape that matches the external shape of a mechanical key, magnetic card, or the like.

[Means for solving problems]

In the optical locking system of the present invention, the key includes a light emitting unit that generates an optical signal modulated into a specific pattern, a light receiving section that transmits ijQ optical symbol signals, and a light receiving section that transmits the optical signal received by the light receiving section. A transmission unit decodes the optical signal transmitted by the transmission unit, and if it is determined that the signal has a specific pattern, the lock opening/closing mechanism is set to I;;l I!
The lock has a signal determination section that allows the J1!11 operation to be performed.

(Function) In this way, a light emitting means is provided on the key side, a light receiving section and a signal determination section are provided on the lock side, and a specific pattern of modulated light is emitted between the locks.
By using the key to activate the 1'l operation, the input part of the key on the lock side can be made smaller and can be easily concealed.

〔Example〕

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

FIG. 1 shows an embodiment of the electric locking system 414 of the present invention.
FIG. 2 is an external view of the light receiving unit 5 and the transmission unit 6 of the embodiment shown in FIG.

The key unit 1 includes a light emitting switch 2 and a signal light emitting LED.
3 on the outside, and a circuit (not shown) that generates a signal of a specific pattern is built in. When the light emitting switch 2 is pressed, this signal generating circuit is activated and the signal light emitting LED 3 is activated. emits modulated light. Lock unit 4 is a key unit! A light receiving unit 5 that receives the modulated light from the light emitting LED 3 of ~1, a transmission unit 6 that transmits the modulated light received by the light receiving unit 5, a lock operating motor 8, and an alarm 9.
Then, the optical signal transmitted by the transmission unit 6 is converted into an electrical signal, and this signal is judged. If it is the specific pattern, the lock movement motor 8 is driven, and it receives normal illumination light, etc. When it receives light that does not correspond to any of the above, it does not output anything, and when it receives light that does not correspond to any of the above, it activates the alarm 9.

Next, the operation of this embodiment will be explained.

When the owner of the key unit 1 presses the light emitting switch 2 with the signal emitting LED 3 facing the light receiving unit 5, the signal emitting LED 3 emits light modulated in a specific pattern. This light is received by the light receiving unit 5 and transmitted to the signal determining section 7 via the transmission unit 6. The signal determination unit 7 converts the transmitted light into an electrical signal, decodes this electrical signal, and makes a determination. If it is determined that the received light has a specific pattern, the lock operating motor 8 is driven to open and close the lock. Each operation of opening and closing the lock is performed alternately by pressing the light emitting switch 2. When the received light does not correspond to a specific pattern of modulated light or normal illumination light, the alarm 9 is activated and notifies the person concerned that suspicious light has been received.

In addition, in this embodiment, an example was explained in which the two operations of opening and closing the lock are performed alternately by one light-emitting switch 2, but the present invention can also be used with a locking mechanism that automatically locks the door simply by closing the door. Accordingly, the key unit 1 may be used as a dedicated key for opening a lock. Alternatively, two light emitting switches 2 and two light modulation patterns each may be provided on the key unit 1 and used for opening and closing.

FIGS. 3 and 4 are diagrams showing examples of the key unit 1. FIG. In the example shown in FIG. 3, the key unit 1 is of a key chain type, and in the example shown in FIG. 4, the key unit 1 is incorporated into a wristwatch.

FIG. 5 shows an example in which the light receiving unit 5 of the lock unit 4 is incorporated into an ornamental plant.

〔Effect of the invention〕

As explained above, the present invention has the advantage that by using an optical signal modulated into a specific pattern as a key, the input part of the key on the lock side can be made smaller and can be easily concealed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the electric locking system of the present invention, Fig. 2 is an external view of a light receiving unit 5 and a transmission unit 6, and Fig. 3 shows an example in which the key unit 1 is a key or holder type. 1 and 4 are diagrams showing an example in which the lock unit 1 is incorporated into the arm clock 1, FIG. 5 is a diagram showing an example in which the light receiving unit 5 of the lock unit 4 is incorporated in an ornamental plant, and FIG. The figure shows an example of a conventional electric locking system. 1...Key unit, 2...Light-emitting switch,
3... LED for signal emission, 4... Lock unit, 5...
...Light receiving unit, 6...Transmission unit, 7...
・Signal determination unit, 8...Lock operation motor, 9...
alarm. Patent Applicant: NEC Corporation

Claims (1)

[Claims] An electric locking system that opens and closes a lock using an electric signal, wherein the key includes a light emitting unit that generates an optical signal modulated in a specific pattern, a light receiving unit that receives the optical signal, and a light receiving unit that receives the optical signal; a transmission section that transmits the optical signal received by the light receiving section; and a transmission section that decodes the optical signal transmitted by the transmission section and, if it is determined that the signal has the specific pattern, causes the opening/closing mechanism of the lock to perform an opening/closing operation. An electric locking system characterized in that the lock has a signal determining section for making the signal determination.