JPS63236880A - Door lock unlocking apparatus - 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] [Industrial Application Field] This invention is intended to check who has access to a restricted area 1, such as a hotel room or an important room in a company. This invention relates to an improvement in a door unlocking device that identifies a unique code (hereinafter referred to as ID code) assigned to a room and unlocks the door of the room.

[Conventional example] In recent years, in order to prevent crime and reduce labor costs, hotel room doors have been equipped with card readers that can unlock the door with a card that records the ID code of each room user. Equipped with a door lock release system. Also,
This card-reading door unlocking system is also used to unlock the doors of important rooms in the company, such as laboratories, to maintain confidentiality.

[Problems to be Solved by the Invention] However, the above card reading type door unlocking system requires the user to insert the ID card one by one into a card reading device provided on the door side. Namely.

When entering the room, if you have a lot of luggage, 1
For example, it is very inconvenient to place the luggage on the floor and then take the card out of the pocket and have it read by the reading device. Furthermore, it is troublesome for people who frequently go in and out of the room because they have to use an ID card. Furthermore, not only does the user have to carry an ID card with him at all times, but he also has the problem that if he forgets his ID card, he will not be able to open the door.

This invention was made in view of the above-mentioned problems, focusing on the fact that hands and door knobs are conductors, and that the knobs are operated when opening a door. To provide a door unlocking device capable of unlocking a door.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a door unlocking device that unlocks a door locking mechanism using a code unique to the user, which uses a transmitting device carried by the user and a corresponding one. a receiving device that receives the code signal output from the transmitting device; the transmitting device includes an encoder unit that outputs the code; a modulator that modulates the code signal at a predetermined frequency; and a receiver that modulates the code signal at a predetermined frequency. a transmitter that transmits the signal to a conductor such as a knob, and the receiving device includes a receiver that receives the modulated signal transmitted through the conductor, and a receiver that demodulates the received modulated signal to detect the code signal. a separate IDII section that identifies whether the code signal obtained by the decoder is a code unique to the user; and a separate IDII section that identifies whether the code signal obtained by the decoder is a code unique to the user; The door lock release device outputs a release signal for unlocking the door in certain cases.

[Example] Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 and 2, 1 is a transmitting device that modulates an ID code and transmits it to a conductor (for example, a hand 3 or a door knob 4). The transmitting device 1 includes an encoder section 1a that outputs an ID code signal.

A modulator 1b that modulates the ID signal, an oscillator IG that outputs a frequency necessary for this modulation, and a transmission output device 1d that transmits the modulated signal to the conductors 3 and 4 are provided.

Note that this transmitter W1 is attached to the wrist in the form of a wristwatch or the like, contacts the skin, and transmits the signal through the skin. The modulated signal transmitted via the conductors 3 and 4 is received by the receiving device 2. This receiving device 12 includes a receiver 2a that receives the modulated signal, a demodulator 112b that demodulates the ID signal from the received modulated signal, and an ID corresponding to the ID signal.
A decoder unit 2c that detects the code, and an I that identifies whether the detected ID code is the code of the user concerned.
D identification unit 2d and a door lock that outputs a release signal for unlocking the door using the identification signal output from the ID identification unit 2d when the code of the received interlock signal is the code of the user concerned. A release device 12e is provided.

The lock mechanism 5 attached to the door receives this release signal.
will be unlocked.

Note that the receiving device 2 is placed near the door that is opened and closed, and is electrically connected to the knob 4. Hence the transmitter!
! The modulated signal from the receiver 1 is transmitted to the receiver 2 when a part of the body, such as a hand, comes into contact with the door knob.

Next, the operation of the door lock release device having the above configuration will be explained.

First, if the transmitting device 1 is a wristwatch type, a person who enters or exits a room in a predetermined access area must hold the transmitting device 1 by hand 63.
Attach directly to etc. In this case, the transmitter! ! 1 outputs a modulated signal of an ID code registered in the receiving device 2. This transmitter! 1 attached to the wrist 3 or the like grips the door knob 4 in an attempt to enter or exit a locked room, a modulated ID signal from the transmitter 1 is transmitted via the hand 3 and the knob 4 to the receiver fi2. transmitted to. Then, the receiver! ! 2 is a door unlocking device 2e when the code of the input ID signal is a registered code.
outputs a release signal. Due to this.

The door locking mechanism is unlocked by this signal, and by rotating the knob 4, the door becomes openable and closable, allowing the user to freely enter and exit the room.

Note that the knob 4, which is a conductor, is insulated from the door. This prevents the signal from being transmitted from the transmitting device 1 to the receiving device 12 through other paths, and the transmitting device! This is to prevent the door lock from being unlocked even if the person installing the door lock 1 touches any part of the door other than the knob 4.

[Effects of the Invention] As explained above, according to the present invention, when entering or exiting a room, the door can be unlocked and opened/closed by simply touching the knob, so you can always carry your ID card, which is often forgotten. There is no need to carry it around, and there is an effect of being freed from the troublesome operations such as inserting the ID card into a reading device.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of a door lock release device showing an embodiment of the present invention, and FIG. 2 is a diagram for explaining the operation of the door lock release device. In the figure, 1 is a transmitting device, 1a is an encoder section, 1b is a modulator, 1c is an oscillator, 1d is a transmission output device, 2 is a receiving device, 2
a is a receiver, 2b is a demodulator, 2c is a decoder section, 2d is an ID1It separate section, 2e is a door unlocking device, 3 is a conductor, and 4 is a knob (conductor). 5 is a locking mechanism.

Claims (1)

[Claims] A door unlocking device that unlocks a door locking mechanism using a user-specific code, comprising: a transmitter carried by the user; a receiver that receives the code signal output from the transmitter; The transmitting device includes an encoder section that outputs the code, a modulator that modulates the code signal at a predetermined frequency, and a transmitter that transmits the modulated signal to a conductor such as the door knob, The receiving device includes a receiver that receives the modulated signal transmitted through the conductor, a decoder section that demodulates the received modulated signal and detects the code signal, and a code signal obtained by the decoder section. An ID identification unit that identifies whether or not the code is unique to the user; and an ID identification unit that sends a release signal to unlock the door when the code signal input by the identification unit is the code of the user. A door lock release device comprising: a door lock release device that outputs an output.