JPH0448916B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic lock device for electronically locking and unlocking a door.

Conventionally, devices that electronically lock and unlock doors use magnetic cards or keys, and it has been said that it is difficult to change the PIN that allows entry when entering the door using a key. There are drawbacks, such as the risk of card damage or loss with card-type devices. Another drawback of conventional electronic lock devices is that it is not possible to determine whether the door is locked or unlocked from a distance from the door. It is therefore an object of the present invention to provide an electronic lock device free of such drawbacks.

This invention will be explained below.

The present invention relates to an electronic door lock device, and includes data input means provided on the outside of the door for inputting an instruction to unlock the door, and the data input means for displaying the locked/unlocked state of the door. a display means provided on the door, a data setting means provided on the inside of the door for setting password data for unlocking the door, and a lock provided on the door for locking the door; a voice synthesis output means for outputting a voice to guide the user according to the locked/unlocked state; and a voice synthesis output means for calculating and comparing the password data with the data input by the data input means using a predetermined calculation formula. , control calculation means for unlocking the lock when a match is made and controlling the display means and the voice synthesis output means.

FIGS. 1A to 1C show the external appearance of a door to which the present invention is applied. A keyboard 1 as shown in detail in FIG. 2 is disposed in the center of the side door 6, and a door 8 is provided with a knob 7 for use by passersby to open and close the door 8. Further, a control box 2 for controlling locking and unlocking of the door 8 is attached to the upper plate 9 at the top of the door 8.
A lock 10 driven by a solenoid or the like is provided in the part of the side door 6 corresponding to the knob 7, and the lock 10 and the control box 2 are electrically connected via a flat cable 4 and a connector base 3. has been done. Furthermore, as shown in FIG. 1C, a digital switch 5 for setting a code for password data is provided on the indoor side of the side core 6, and a lid 16 of the side door 6 is provided above the digital switch 5. There is. Note that the keyboard 1 has the following functions as shown in FIG.
A speaker 112 for outputting sound by a control circuit, and a numerical value "0" to be operated by a person entering the room.
A key 12 consisting of a numeric key “9” and an “ENTER” key for giving a command to open the door 8;
It consists of light emitting diodes 13 (green), 14 (yellow), and 15 (red) for electrically indicating the locked/unlocked state of the door. The control box 2 also has a pilot lamp 43, a power switch 44, and a handle 45, as shown in FIG. .

On the other hand, the control system of this invention has a configuration as shown in FIG.
0, ROM21 that stores audio data,
It includes a ROM 22 for storing operating programs and a RAM 23 for writing and reading data during operation. These devices 20 to 23 are connected to each other via a bus 30 and to an external device via an interface 31. That is, the light emitting diodes 13 to 15 in the keyboard 1 are each connected to the driver 1.
31 to 151 and driving transistors 132 to
It is connected to the power supply +V _C via 152, and data from the key 12 is input to the interface 31 via the encoder 121. Further, the setting value of the digital switch 5 is directly input to the interface 31, and the detection output of the lock/unlock detection switch (for example, a micro switch) 32 for detecting the locking and unlocking of the door 8 and the open/close state of the door 8 are inputted directly to the interface 31. A detection signal from a door opening/closing switch (for example, a micro switch) 33 for detecting this is also directly input to the interface 31. Furthermore, the interface 31 is a driver 34
1 and 351 to drive relays 34 and 35, and these relays 34 and 3
The relay 34 is configured to output audio from the speaker 111 to the room, and the relay 35 is configured to output audio data from the bus 30 via the audio synthesis circuit 36 and the amplifier 37 to the contact point 5.
The sound is output from the outdoor speaker 112. And the interface 31 is the lock 1
A locking/unlocking signal for 0 is given, and the lock 10 is locked/unlocked by a solenoid or the like driven via a relay 40. That is, the lock 10 is normally locked when the contacts of the relay 40 are off, but when the relay 40 is driven via the driver 41 and its contacts are on, the solenoid is activated from the electrically connected power source 42. Power is supplied to the lock 10, etc., and the lock 10 is unlocked.

The operation of such a configuration will be explained with reference to the flowchart of FIG.

First, in steady state, CPU20, ROM22
Through the operation of the RAM 23, only the light emitting diode 14 is turned on via the bus 30 and the interface 31, and this yellow display allows those entering the room to confirm from the outside that the locking device of the door 8 is working. It's becoming like that. At this time, the relay 40 is driven via the driver 41, but since its contact is off, the lock 10
is locked. Therefore, the door 8 cannot be opened in this state. Note that the digital switch 5 attached to the side door 6 in the room is preset with a number for password data (for example, "820314").

Here, in checking the opening/closing of the door 8 (step S2), if the door 8 is open, this is detected by the door opening/closing switch 33,
The CPU 20 drives the relays 34 and 35 via drivers 341 and 351, and the voice synthesis circuit 36
and the indoor/outdoor speaker 111 via the amplifier 37.
112 outputs a voice saying "Please close the door" and turns on the transistor 152 via the driver 151, thereby lighting up the red light emitting diode 15 (step
S3, S15). If the door 8 is closed, it is locked (step S4), and then the lock-unlock detection switch 32 detects whether it is locked (step S5), and if it is not locked, the same as above is done. At the same time, the voice synthesis circuit 36 outputs an alarm sound such as "Peep, Peep", and the red light emitting diode 15 is turned on to alert the person entering the room to the door 8.
is not locked (step
S5, S16).

When the lock/unlock detection switch 32 detects that the door 8 is locked, the person entering the room next operates the keyboard 1 (step S6). Then, there is a numerical key input that is known only to those who are allowed to enter the room (step S7), and the numerical data input with the numerical keys is input until the "ENTER" key of key 12 is pressed.
It is stored in the RAM 23 (step S17). Then, when the "ENTER" key of the key 12 is pressed, the digital switch 5 reads the preset password data number, and the CPU 20 performs calculations on the entered numerical data to create the password data number. (Step S8~)
S10). Comparing and determining the input numerical data of the numerical key with the password data number set in the digital switch 5 is performed, for example, as follows. That is, a predetermined numerical calculation program is stored in the ROM 22 in advance, and the predetermined numerical calculation is performed on the password data number set by the digital switch 5, and the obtained result is used as the password data. Then, the password data is compared with numerical data input by the person wishing to enter the room using the keys 12 of the keyboard 1, and if the two match, entry is permitted. In other words, those who are permitted to enter the room are informed of the password data number set on the digital switch 5 and the calculation details, and when entering the room, the result of the calculation is performed on the password data number. All you have to do is enter. Note that it is sufficient to select a very simple calculation. for example,
For example, "1" is added to each digit of the password data number set by the digital switch 5, or "9's complement" of the password data number is taken. That is, for example, digital switch 5 to 4
When the digit is set to "1234", an operation that adds "1" will be computed as "2345", and a "9's complement" operation will be computed as "8765".
Those who are permitted to enter the room will have to enter those numbers. In this way, the CPU 20 compares the password data with the numerical data entered by the numerical keys, and if the two do not match, clears the key input value, drives the relay 35 via the driver 351, and drives the voice synthesis circuit 36. After that, the speaker 112 outputs a voice saying "The number is incorrect" and informs the person wishing to enter the room who operated the keyboard 1 that the number is incorrect (step S11,
S18). At the same time, by turning on the transistor 152 via the driver 151,
The red light emitting diode 15 is turned on. If the password data and numerical data match, the key input value is cleared (step S12), and the lock 10 is unlocked by driving the relay 40 via the driver 41 (steps S12, S13). , thereby allowing the door 8 to be opened. At this time, the key operator can drive the relays 34 and 35 via the drivers 341 and 351, and provide the voice data "Please enter" to the speakers 111 and 112 via the voice synthesis circuit 36. to notify the user that they can enter the room by opening the door (step S14). At the same time,
By turning on the transistor 132 via the driver 131, the green light emitting diode 13 is turned on so that it can be visually determined that the room can be entered.

When a person who wishes to enter the room opens the door 8 and enters the room, the door 8 is automatically closed by a spring or the like, and after a certain period of time, it is automatically locked and returned to its original state (step S19). From the inside of this door 8, the door can be opened and closed freely by turning the knob 7, and when entering from the outside again, it is only possible to enter the room by performing the same operation as described above. It becomes a state.

As described above, according to the electronic lock device of the present invention, there is a sound output from the speaker and a lighting output from the light emitting diode depending on the state of the lock and door, so that the state can be made clear to the surrounding people. It is easy to operate, and the room can only be entered by entering password data that is the result of a predetermined arithmetic expression, so it is possible to reliably prevent unauthorized entry by outsiders. In addition, since the memory can be rewritten freely, even if the calculation formula for calculating the PIN data based on the digital switch number is leaked to an external party, the PIN data can be arbitrarily and easily obtained by rewriting the calculation program. The advantage is that it can be changed. Furthermore, since the setting value of the digital switch can be freely changed, unauthorized entry by outsiders can be more effectively prevented by changing the number periodically, for example, every day, every week, or every month.
Furthermore, since the room can be entered by inputting from an external keyboard, there is no need to worry about losing or damaging conventional keys or cards, making it extremely convenient.

Incidentally, in the above embodiment, a case has been described in which a relay is used in the drive system, but an electronic switching means may be used, and a lamp may be used instead of a light emitting diode.

[Brief explanation of the drawing]

FIG. 1A is an exterior view of the door to which this invention is applied, FIG. 1B is a side view thereof, and FIG. Figure 3 is an external view of the control box, Figure 4 is a block configuration diagram showing the control system of this invention,
FIG. 5 is a flowchart showing an example of the operation of the present invention. 1...keyboard, 2...control box, 5...
...Digital switch, 7...Knob, 8...Door, 12...Key, 13-15...Light emitting diode, 20...CPU, 21, 22...ROM, 23
...RAM, 30...Bus, 31...Interface.

Claims (1)

[Claims] 1: a data input means provided on the outside of the door for inputting an instruction to unlock the door; a display means provided on the data input means for displaying the locked/unlocked state of the door; a data setting means provided on the inside of the door for setting password data for unlocking; a lock provided on the door for locking the door; A voice synthesis output means for outputting a voice to provide guidance; and a predetermined calculation formula to calculate and compare the password data with the data input by the data input means, and when they match, the lock is unlocked. What is claimed is: 1. An electronic locking device for a door, characterized in that it is equipped with control calculation means for locking the door and controlling the display means and the voice synthesis output means.