JPH0791912B2 - Electric lock system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a system for unlocking an electric lock by discriminating a sound signal generated by a tone generator.

[Background technology]

Conventionally, the electric lock system shown in FIG. 5 has been used.

In this system, the secret switch 100 is integrated with the Duang Hung subunit 106 and embedded in the outer wall of the door, etc.When the door 109 is unlocked, the cover 101 of the secret switch 100 is opened and the start provided inside is started. Button 10
When you press 3, the numbers 0 to 9 are lit between the switches on both sides, so you can enter the predetermined 4-digit PIN from these 10 types by operating the key switch 105. , The input number is sent to an electric lock operation unit (not shown), and if it is determined that the number matches the pre-stored number, a drive signal is sent to the motor lock 108 and the door 1
The 09 lock is designed to be unlocked.

With such a device, when the 4-digit key switch is pressed to unlock it, the microcomputer automatically changes the arrangement of the numbers displayed between the switches on both sides. Even if you can see it or your finger is dirty, the PIN code cannot be read by others. Note that 102a and 102b are connectors.

However, in such a system, the secret switch 100 is exposed and arranged at a position close to the door lock, and is unique to the particular lock. For this reason, it is vulnerable to destruction and mischief, and there is a problem in that if a secret code is leaked from a child or other person to another person, it can be unlocked easily.

[Object of the Invention]

The electric lock system of the present invention is proposed in order to solve the above-mentioned problems, has no keyhole, and is highly safe because it does not expose the operation part such as a switch to the outside. It is an object of the present invention to provide an electric lock system that can be used for unlocking a lock.

[Disclosure of Invention]

The present invention proposed to achieve the above object is a tone generator that outputs a plurality of types of sound signals by a push button operation, and a sound-electricity conversion circuit that converts the output sound from this tone generator into an electrical code signal. And a code determination unit that compares the electric signal converted by the sound-electricity conversion circuit with a pre-stored secret code and outputs an unlocking signal when they match, and an electric lock that unlocks the electric lock by this matching signal. And a drive unit.

〔Example〕

 Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention constructed by incorporating it into an existing intercom system.

Reference numeral 1 denotes a tone generator formed in a portable size and provided with a plurality of push button switches 1a. These push button switches 1a ... Are provided with push button switches including "0" to "9" similar to touch-tone phones, and are configured to generate different kinds of sound signals.

The input of the personal identification number by the tone generator may be performed by operating the push button switch step by step according to the personal identification number or by using the shortening function. Further, the tone generator 1 may be configured to use a dial push output similar to a touch tone phone.

Reference numeral 2 is an intercom base unit, which is equipped with a handset 21 for a call, and has an open door indicator light 2a that lights and indicates an open / closed state of a door, an unlock indicator light 2b that lights when unlocking a lock, and an intercom subunit 3 It has a mode setting switch 2d for permitting or prohibiting the input of the sound signal of the tone generator 1 via the, and selecting an operation described later. Note that 2c is an automatic lock changeover switch, which automatically locks when the door is closed when it is "ON", and reverses unlocking and locking every time the unlocking switch 2e is operated when "OFF".

In the system having such a configuration, when the mode setting switch 2d is switched to "absent" and the call switch 3a of the Duang Hong slave device 3 is operated, the master device 2 automatically answers the call of the slave device 3, and the slave device 3 Allows input from. Then, when the push button switch 1a of the tone generator 1 is operated to input the personal identification number, the sound signal output at this time is converted into an electric signal by the intercom subunit 3 and input to the master unit 2, and the personal identification number is input. It is determined whether or not the numbers match. When it is determined that the personal identification number input from the tone generator 1 matches the pre-stored personal identification number, an unlock signal is output to drive the electric lock control device 4 to unlock the electric lock 6. Although locked, the electric lock 6 is not unlocked if they do not match.

FIG. 2 shows the internal circuit of the master unit. Base unit 2
Is provided with an automatic response circuit 21, and the automatic response circuit 21 is connected to and disconnected from the intercom communication circuit 20 by switching the mode setting switch 2d to the "present" or "absent" side. ing.

The intercom call circuit 20 inputs the call signal from the intercom subunit 3, and when the handset 21 is picked up, a call between the master unit 2 and the intercom subunit 3 becomes possible as in the normal case. Incidentally, 25 is a power supply unit.

Now, referring to FIGS. 1 and 2, the control operation in the case where the “absence” mode is selected will be described together with the system configuration. When the tone generator 1 is operated on the intercom subunit 3, A sound signal is input to the intercom communication circuit 20 of the base unit 2.

The sound signal input to the intercom communication circuit 20 is converted into an electrical code signal by the automatic response circuit 21, and the converted electrical signal is input to the code determination unit 22. In this embodiment, the automatic response circuit 21 constitutes a sound-electricity conversion circuit.

The code determination unit 22 determines whether or not the code signal sent at this time matches the secret code stored in advance in the secret code setting unit 23, and if they match, the electric lock drive unit.
The unlock signal is output to 24. When the electric lock driving unit 24 inputs an unlocking signal, a lock motor (not shown) is rotationally driven to unlock. When the lock is unlocked, the unlocking indicator light 2b lights up and the door 5
When is opened, the door opening indicator light 2a is further turned on.

As the lock, a solenoid lock may be used in addition to the motor lock.

In addition, when the mode setting switch 2d is switched to "present", the connection between the intercom communication circuit 20 and the automatic response circuit 21 is cut off, and when the call from the door 3 is made by the visitor, the handset
21 picks up and responds, confirms the visitor and unlock switch 2e
To unlock.

FIG. 3 shows the configuration of another embodiment.

In this embodiment, the sound output of the tone generator is directly input to the electric lock unit installed in the door to unlock the electric lock.

The same tone generator 1 as that used in the first embodiment is used, but the electric lock unit 7 provided in the door 8 is provided with a pickup 71 which is a sound-electricity conversion circuit. FIG. 4 is a configuration diagram of an internal circuit of the electric lock unit 7. Similar to the one shown in FIG. 2, a code determination unit 72, a personal identification number setting unit 73, an electric lock driving unit 74, and a power supply unit 75 are provided.
Unlike this embodiment, may be provided on the door frame side outside the electric lock unit 7. Further, it is not necessary to make a hole in the portion where the pickup 71 is provided (shown by 7a in FIG. 3), and the tone generator 1 can be operated by operating the tone generator 1 at a place near the pickup from the outside of the door. Good.

The electric lock driving unit 74 may drive the dead bolt 7b or fix the latch bolt 7c.

Furthermore, the tone generator 1 can be used with a built-in battery,
It suffices to connect the pin jacks or the like so that the device can be appropriately charged.

〔The invention's effect〕

According to the present invention, since the electric lock is unlocked by operating the tone generator, it is possible to ensure confidentiality as compared with the case where the numeric keypad is operated for unlocking. Further, if the personal identification number is stored in the tone generator in a shortened manner, the operation is simplified and it becomes possible to unlock a plurality of electric locks with one tone generator.

[Brief description of drawings]

FIG. 1 is a system diagram showing a first embodiment of the system of the present invention, FIG. 2 is a structural example diagram of an internal circuit of an intercom master unit,
FIG. 3 is a view showing another embodiment of the system of the present invention, and FIG.
FIG. 5 shows an example of the internal circuit configuration of the electric lock unit, and FIG. 5 shows an explanatory view of a conventional secret lock system. (Description of symbols) 1 ... tone generator 21,71 ... sound-to-electricity conversion circuit 22,72 ... sign determination unit 24,74 ... electric lock drive unit 2 ... intercom master unit 3 ... doorphone subunit 7 ...... Electric lock unit

Claims (3)

[Claims] 1. A tone generator that outputs a plurality of types of sound signals by pressing a push button, a sound-electricity conversion circuit that converts an output sound from the tone generator into an electric code signal, and a sound-electricity conversion circuit. It is provided with a code determination unit that compares the converted electric signal with a pre-stored secret code and outputs an unlocking signal when they match, and an electric lock driving unit that unlocks the electric lock by this matching signal. The characteristic electric lock system. 2. The door-to-phone slave unit in which the sound-electricity conversion circuit, the code determination unit, and the electric lock drive unit are built in the intercom master unit, and the output sound from the tone generator is connected to the intercom master unit. The electric lock system according to claim (1), which is configured to be input via the electronic lock system. 3. The sound-to-electricity conversion circuit, the code determination unit and the electric lock driving unit are built in an electric lock unit installed inside the door, and the output sound of the tone generator placed outside the door is the above-mentioned. The electric lock system according to claim (1), which is configured to be directly input to the sound-electricity conversion circuit.