JPH0842207A - Code number type electric lock - Google Patents

Abstract

PURPOSE:To make it difficult for other people to read a code number and hence enhance a theft preventative capacity by storing an operation mode, which selects the code number from input numerals having more digits than the code number and refers thereto, in an electronic circuit of an electric lock. CONSTITUTION:A code number having specified digits is stored in an electric circuit 30 of a code number type electric lock. In addition, a code number reference method can be selectively set so that input numerals may be referred to the code number in three different operation modes. Input numerals consist of a definite number of arbitrary digital figures which are divided before and after the code number. An operation mode selects any digital figures out of the three types of the digital figures can be set with a dip switch. When digital figures specified digits are input in ten keys 10a, the electric circuit 30 selects only the digitals of the code number as a reference number according to the predetermined operation mode and refers to the code number. When it is identical to the code number, an unlock signal is transmitted from the electric circuit 30 so that an electric lock 20 may put a dead bolt 20a into an unlocked state. Then, a door can be opened by turning a lock knob reversely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collates a preset personal identification number with an input collated number, and performs a unlocking operation when the personal identification number and the collated number match. Formula electronic lock.

[0002]

2. Description of the Related Art Conventionally, a personal identification number type electronic lock has been used for entrance doors, locker doors, etc., and the user only has to enter the personal identification number from a numeric keypad if the personal identification number is set in advance. You can unlock it with. Also, if a number different from the personal identification number is entered, it will not be unlocked.
As a result, the user only has to remember the personal identification number, so there is no need to carry a key or the like, and there is an advantage that inconveniences such as loss or theft of the key can be avoided.

[0003]

However, in this type of electronic lock, since the ten-key pad or the like is used to facilitate the input operation of the number, the secret code is known to others when the unlocking operation is performed. There is a problem that the anti-theft property is poor.

[0004] It is an object of the present invention to provide a personal identification number type electronic lock in which the personal identification number is extremely difficult to be seen even when being seen by another person when unlocking, and the antitheft property is improved.

[0005]

The personal identification number type electronic lock of the present invention, which has been made to solve the above-mentioned problems, collates a preset personal identification number with an input collated number to obtain the personal identification number. In the personal identification number type electronic lock that unlocks when the collated number and the collated number match, an arbitrary one-digit number that is sequentially input is stored in association with the input order, and the stored one-digit number is stored. The one-digit number of the input order matching the preset selection condition is selected by the number of digits of the personal identification number, and the selected one-digit number set is collated with the personal identification number as the collated number. Characterize.

[0006]

The personal identification number is generally composed of a combination of a plurality of digits in order to make the probability that the collated number randomly input coincides with the personal identification number extremely low.
The number of digits is about 4 so that the user can easily remember the personal identification number. However, it is easy to remember a 4-digit number even if the input operation is seen once, which deteriorates the anti-theft property of the conventional personal identification number type electronic lock.

On the other hand, in the personal identification number type electronic lock of the present invention, arbitrary one-digit numbers that are sequentially input are stored in correspondence with the input order, and are preset from the stored one-digit numbers. One digit of the input order matching the selected condition is selected by the number of digits of the personal identification number, and the set of the selected one digit is collated with the personal identification number as a collated number.

Therefore, when performing the unlocking operation, one digit is sequentially input so that the number of digits is larger than that of the personal identification number,
At this time, if the number of the personal identification number is input at the input order that matches the selection condition, the collated number matches the personal identification number, so that it can be unlocked. Also, the only number that the user needs to remember is the number of digits in the personal identification number, and since the number of digits to be entered can be increased, it is difficult to remember the number even when looking at the input operation. Is extremely difficult to find.

[0009]

FIG. 4 is a perspective view showing an attached state of a personal identification number type electronic lock according to an embodiment of the present invention. The personal identification number type electronic lock of this embodiment is for fittings, and the operation unit 10 is attached to the front side of the door A, and the electric lock 20 and the electronic circuit unit 30 are arranged inside the door A.

The operation unit 10 is provided with a ten-key pad 10a, a lock knob 10b and a lid 10c, and the ten-key pad 10a is normally covered by a lid 10c which slides up and down. The lock knob 10b is mechanically connected to the electric lock 20, and when the electric lock 20 is in the unlocked state, the dead bolt 20a of the electric lock 20 is manually rotated by turning the lock knob 10b.
Can be taken in and out.

Further, when the electric lock 20 is locked, when the locking knob 10b is turned to project the dead bolt 20a, the dead bolt 20a is locked to be locked. At this time, the locked state is detected by the electronic circuit unit 30,
The electronic circuit unit 30 starts the control operation in the locked state described later. Then, when unlocking, if the collated number in the number input from the ten-key pad 10a and the personal identification number match, the electronic circuit unit 30 outputs an unlocking signal to the electric lock 20, and the electric lock 2
0 is to unlock the dead bolt 20a by this unlock signal. Thereby, the locking knob 10b can be turned in the opposite direction to pull in the dead bolt 20a, and the door A can be opened.

In this embodiment, the collation method between the input number and the personal identification number can be selectively set from three operation modes. For example, as shown in FIG. 2 (a), in the first mode, a set of one-digit numbers corresponding to the number of digits of the personal identification number is selected as the collation number from the beginning of the input one-digit number, and this collation number Check with the PIN. Also,
As shown in Fig. 2 (b), in the second mode, a set of one-digit numbers consecutive from the last one-digit number of the input one-digit number in ascending order is selected as the collation number, and this collation number is selected. And PIN code. Furthermore, as shown in FIG. 2 (c),
In the third mode, among the input one-digit numbers, a set of one-digit numbers corresponding to the number of the personal identification number from the designated digit is selected as the collation number, and the collation number and the personal identification number are collated.

FIG. 1 is a block diagram of a personal identification number type electronic lock according to an embodiment, in which an electronic circuit section 30 is a CPU for controlling the whole.
1. ROM2 storing a control program, RAM storing data such as a preset personal identification number and input number
3. The DIP switch 4 for setting the operation mode and the number of digits of the personal identification number. The DIP switch 4 is arranged on the back side of the door A.

The CPU 1 controls the entire operation using the working area of the RAM 3 based on the control program stored in the ROM 2. Then, the personal identification number set by the user is stored in the RAM 3, and when a numeric input operation is performed from the ten-key 10a in the locked state, the set of numeric input is performed by a method according to the operation mode set by the DIP switch 4. The collated number is selected from, the collated number and the personal identification number are collated, and when they coincide, an unlock signal is output and the electric lock 20 is unlocked.

The numeric keypad 10a is provided with an asterisk button with a US-shaped mark in addition to the numeric buttons corresponding to the one-digit numbers "0 to 9". When unlocking operation, first, the asterisk button is pressed. Press, enter the number with the number buttons, and press the asterisk button to confirm the number input. Also, the entered numbers are stored in RAM3.
The data is stored in the storage area set in advance in correspondence with the input order.

FIG. 3 is a flow chart showing the main part of the control program in the embodiment. This flowchart is a subroutine that is activated when the locked state is reached. The control when setting the personal identification number is the same as that of the conventional personal identification number type electronic lock, and is controlled by another subroutine when in the unlocked state. In the following description, it is assumed that the personal identification number has already been set and stored in the RAM 3.

First, in the locked state, it is monitored in step S1 whether or not the asterisk button is pressed. When the asterisk button is pressed, the numeric keypad 1 is pressed in step S2.
The presence or absence of operation of 0a is monitored, and if there is an operation, step S3
In step S4, it is determined which one of the number buttons "0-9". If any, the number corresponding to the number button operated in step S4 is stored in the RAM 3.

Next, in step S5, the presence or absence of the operation of the numeric keypad 10a is monitored, and if there is an operation, it is determined in step S6 whether or not the asterisk button is pressed. If it is not the asterisk button, the process proceeds to step S3. If it is the asterisk button, the process proceeds to step S7.

In step S7, it is determined whether or not the number of digits stored in the RAM 3, that is, the number of digits of the input number is equal to or larger than the number of digits set in the personal identification number. If it is less than the number of digits set, the process returns to step S1. If the number of digits is greater than or equal to the set digit, step S
Proceed to 8.

In step S8, the setting state of the DIP switch 4 is read to determine which operation mode is currently set. If the operation mode is the first mode, the process proceeds to step S9 and the second mode is selected. If so, the process proceeds to step S10, and if it is the third mode, the process proceeds to step S11.

In step S9, a set of numbers corresponding to the number of digits of the personal identification number from the beginning of the input numbers is selected as a collation number, and this collation number and the personal identification number are compared. Further, in step S10, a set of numbers corresponding to the number of digits of the personal identification number is selected as a collated number from the last number of the input numbers,
This collated number is compared with the personal identification number. Further, in step S11, a set of numbers having the number of digits of the personal identification number is selected from the designated digits of the input numbers as the collation number, and the collation number and the personal identification number are compared.

When the comparison is completed in step S9, step S10 or step S11, the process proceeds to step S12,
In step S12, it is determined whether the collated number and the personal identification number match. If they do not match, the process returns to step S1, and if they match, the electric lock 2 is set in step S13.
An unlocking signal is output to 0 to unlock the electric lock 20, and the control operation in this locked state ends.

By the above operation, when the first mode is set, the personal identification number can be unlocked by inputting a multi-digit number with an arbitrary number of digits added before the personal identification number. Further, when the second mode is set, it is possible to unlock by inputting a plural-digit number in which an arbitrary number of arbitrary digits is added after the personal identification number. Furthermore, when the third mode is set, an arbitrary number of preset designated digits is added before the personal identification number, and an arbitrary number of arbitrary digits is added after the personal identification number. It can be unlocked by entering a multi-digit number.

As described above, in any case, the user can memorize only the personal identification number and enter any other arbitrary number in combination with the personal identification number to unlock with a large number of digits. . Therefore, even if the unlocking operation is seen by another person, it becomes extremely difficult to remember the operated number at one time, and the anti-theft property is improved.

In the above embodiment, the first mode, the second mode and the third mode can be switched and set, but it goes without saying that only one of the preset modes may be set. .

Although the number of digits of the personal identification number can be set, it goes without saying that the number of digits may be fixed.

[0027]

As described above, according to the personal identification number type electronic lock of the present invention, the preset personal identification number and the entered collation number are collated to match the personal identification number with the collation number. In the personal identification number type electronic lock that performs the unlocking operation in the case of being stored, the sequentially input arbitrary one-digit numbers are stored in association with the input order, and the stored plural one-digit numbers are set as preset selection conditions. Since the single digit number of the matching input order is selected by the number of digits of the personal identification number and the selected single digit number set is collated with the personal identification number as the collated number,
When performing the unlocking operation, you can sequentially unlock by entering a single-digit number so that the number of digits is larger than that of the personal identification number, and you can increase the number of digits of the entered number. Even if it is seen by another person, it becomes extremely difficult to find out the personal identification number, and the anti-theft property is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a personal identification number type electronic lock according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation mode according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a main part of a control program in the embodiment of the present invention.

FIG. 4 is a perspective view showing an attached state of the personal identification number type electronic lock according to the embodiment of the present invention.

[Explanation of symbols]

1 ... CPU, 2 ... ROM, 3 ... RAM, 4 ... DIP switch, 10 ... Operation part, 20 ... Electric lock, 30 ... Electronic circuit part.

Claims (5)

[Claims] 1. A personal identification number type electronic lock that collates a preset personal identification number and an input collated number and unlocks when the personal identification number and the collated number match. Any one-digit number to be stored is stored in association with the input order, and one-digit number of the input order matching the preset selection condition is selected from the stored plurality of one-digit numbers by the number of digits of the personal identification number. A personal identification number type electronic lock characterized in that the selected one-digit number set is collated with the personal identification number as the collation number. 2. The personal identification number type electronic lock according to claim 1, wherein the selection condition can be set by selecting from a plurality of selection conditions. 3. The selection condition is such that a set of one-digit numbers consecutive from the end of the one-digit numbers stored in association with the input rank from the end to the ascending rank is consecutive from the lower digit of the collated number in digit order. The personal identification number type electronic lock according to claim 1, wherein the personal identification number type electronic lock is specified as a number. 4. The selection condition is that a set of one-digit numbers consecutive from the beginning to the descending order among the one-digit numbers stored in association with the input order is consecutive in digit order from the upper digit of the collated number. The personal identification number type electronic lock according to claim 1, wherein the personal identification number type electronic lock is specified as a number. 5. The selection condition is that a set of one-digit numbers consecutive from an intermediate rank to a descending rank among the one-digit numerals stored in association with the input rank is consecutively arranged in order from the upper digit of the collated number. The personal identification number type electronic lock according to claim 1, wherein the personal identification number type electronic lock is designated as a number to be used.