JPH03100285A - Electronic locking device - Google Patents

Abstract

PURPOSE:To secure the security function and reduce the manufacturing cost by comparing a lock releasing signal memorized into a lock body and a lock releasing signal memorized into a lock body through a calculating means and carrying out locking and lock releasing operations when the both signals accord. CONSTITUTION:A lock body 1 which is equipped with a calculating means 3, memory means 4 which memorizes the lock releasing information, and an I/O means which reads out and writes-in the lock releasing information is provided. Further, a lock body 2 which is equipped with a memory means 11 for memorizing the lock releasing information, comparing means 12 for comparing the lock releasing information, control means 13 for controlling a released lock on the basis of the result of the comparison, and an I/O means for reading out the lock releasing information from a lock body 1 is provided. The lock body 1 is installed onto the lock body 2, and the lock releasing information memorized in the memory means 4 of the lock body 1 is read out through the both I/O means through the calculating means 3. Then, the information is compared with the lock releasing information memorized in the memory means 11 of the lock body 2, and when both of the information accords, locking or lock releasing is carried out by the control means 13.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an electronic locking device used for residential doors, automobile doors, and other various parts that require locking.
In particular, the present invention relates to an electronic lock device having an absolute security function 1 which is originally required for a lock.

(Prior Art) As a conventional lock device, the one shown in FIGS. 5 and 6, for example, is known. This locking device is 19100
The unevenness 102 of a predetermined shape is formed on one or both sides of the key plate 101 by machining such as cutting, and the key plate 101 of this key 100 is inserted into a cylinder of a lock (not shown) to form the unevenness 102 of the key plate 101. When the cylinder of the lock meets -, the rotor of the cylinder rotates to perform locking or unlocking.

However, the conventional locking device described above has a structure in which locking or unlocking is performed by a combination of the unevenness 102 of the key plate 101 and the lock cylinder, thus preventing illegal unlocking by a third party. Even if the unevenness 102 and the like of the key plate 101 are made complicated for the purpose of this, there is a problem that there is a limit to the general use because there is a limit due to the accuracy of machining.

In addition, in the above-mentioned conventional lock device, key brake)-1
Since the unlocking information is displayed directly from the unevenness 102 of 01, the unlocking information of [100] can be recognized very easily, so if you lose the key 100, etc.
There was also a problem in that the unlocking information of o could be easily imitated by a third party.

In place of such conventional locking devices, in recent years, materials with different physical properties such as key magnetic permeability and dielectric constant are placed in predetermined positions of the key 100, making it impossible to identify the key from the outside. Various electronic lock devices with highly complex unlocking information have been proposed and are currently in use.

(Part 1 that LQ Ming tries to solve) However, in the above-mentioned conventional electronic lock device, materials with different physical properties such as magnetic permeability and dielectric constant are placed at predetermined positions on the key plate of the chick. Therefore, it is necessary to detect substances with different physical properties placed on the key plate of the key on the cylinder side of the lock, which has the problem of complicating the detection mechanism of the lock cylinder and increasing cost. .

This invention was devised in view of the current situation, and its purpose is to enable on-site production at a relatively low cost, and to allow a third party to analyze key unlocking information. By making it difficult, we can meet the original requirements of locks.
The aim is to provide an electronic lock device that can provide an "absolute security function."

[Means to solve the problem]

In order to achieve the above object, an electronic lock device according to the present invention includes a calculation means, a storage means storing predetermined unlocking information,
a lock body having an I/O means for reading or writing unlocking information of the storage means from the outside via the calculation means; a storage means storing predetermined unlocking information;
a comparison means for comparing unlocking information in the storage means with unlocking information in the storage means of the lock body; a control means for controlling locking/unlocking based on the comparison result of the comparison means; A lock main body having an I/O means for reading data.

In the present invention, for example, a microchip (CPt) semiconductor chip is used as the calculation means.

Further, as the above-mentioned storage means, for example, FROM or EF
Memory such as ROM is used.

Further, the I/O means described above is configured, for example, by a lock body and an electric contact exposed outside the lock body, but the present invention is not limited to this, and optical information It may also be an optical electronic lock device consisting of a light-emitting element and a light-receiving element that exchange information.

[Effect]

Therefore, in the electronic lock 9 according to the present invention, the lock body is attached to the lock body when locking or unlocking, and the data is stored in the memory of the lock body and in the T-stage through both I/O means. At this time, the unlocking information that has been encrypted and stored in the memory can only be read by CPU calculation, and this read unlocking information is stored in the storage means of the lock body. It is compared by the comparison means with the unlocking information stored in the storage device, and only when they match, the control means can lock or unlock the lock.

〔Example〕

Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

As shown in FIGS. 1 to 3, the lock body 1 is formed of metal, engineering plastic, or the like into a predetermined key shape. The grip part 2 of the lock body 1 includes a CPU 3 consisting of a semiconductor chip as a calculation means, and a memory consisting of FROM, EFROM, etc. as a storage means that stores predetermined unlocking information after encrypting it as necessary. 4 is built-in.

In addition, the key plate 5 of the lock body l has an I on the side.
7. An electrical contact consisting of a gold electrode or the like as a /O means. ．． 72
... is formed, and this quasi-air contact point 7. ,7.・
... is the lead wire 6+, 6g" buried in the lock body 1.
are connected to the CPU 3 and the memory 4 via .

On the other hand, as shown in FIG. 1, the lock body 8 has electrical contacts 9, . 9. -... is 1w1
It is formed to be exposed to the outside at a position corresponding to the "J air contact point 7° 72..." of the main body 1.

Further, inside the lock body 8, a power supply section 10 is provided which supplies electric power to the lock body 1 when the lock body 1 is attached to the lock body 8.

Further, inside the lock body 8, there is a memory 11 consisting of a PROM, an EFROM, etc. as a storage means that stores predetermined unlocking information, and the unlocking information stored in this memory 11 and the electrical contact 7. ．． 7. ... and 9, . A determination circuit 12 is provided as a comparison means for comparing the unlocking information on the lock body l side read through the lock main body l side.

Further, in the lock body 8, as a result of comparison by a determination circuit 12, if the unlock information of the lock body 1 and the lock body 8 match each other, a signal is sent to a drive circuit (not shown) to perform a lock/unlock operation. A control circuit 13 is provided as a control means for driving a motor, solenoid, etc. to control locking or unlocking operations.

FIG. 4 shows a lock body 1 and a writing device 14 for writing arbitrary unlocking information into the memory 4 of this lock body 1.

This writing device 14 has electrical contacts 1st, 15*, etc. made of gold electrodes as I/O means for writing predetermined unlocking information into the memory 4 of the lock body 1.
The electrical contacts 71, 7□, . . . are exposed at positions corresponding to the electrical contacts 71, 7□.

Also, inside the writing device W114,! ! A power supply unit 16 is provided that supplies power to the lock body 1 when the body 1 is attached to the writing device 14. Furthermore, L writing device! 11
4, electrical contacts 71, 7□ are connected to the memory 4 in the lock body l.
. . . and an R/W control circuit 17 that relays writing or reading of unlocking information via 15+ and 15g-, and a desired unlocking information stored in the memory 4 of the lock body 1 via this R/W control circuit 17. A control circuit 18 for writing or recalling information is provided.

Further, the writing device 14 includes a keyboard, a liquid crystal display panel, etc., and is connected to an input section 19 for inputting desired unlocking information.

In the above configuration, the electronic lock device according to this embodiment performs a locking or unlocking operation as follows.

That is, to perform a locking or unlocking operation, the lock body l is attached to the lock body 8, and the electrical contacts 7, . 72... and the electrical contact 9 of the lock body 8. ．． 9. -... and touch each other.

Then, the electrical contacts 7, . 7.
...and 9. ．． CP in the lock body l via 92...
Supply power to U3, activate this CPU3, and
The unlocking information encoded and recorded in the memory 4 by the operation of U3 is read out.

This read unlocking information of the lock body 1 is determined by the judgment circuit 1.
2 is compared with the unlocking information stored in the memory 11 on the lock body 8 side, and if the two match, the determination circuit 12
A coincidence signal is output from the control circuit 13 to the control circuit 13.

Thereby, the control circuit 13 sends a signal to a drive circuit (not shown) to drive a motor, a solenoid, etc., and performs a locking or unlocking operation of the lock body 8.

In addition, the locking operation or unlocking operation by the lock body l depends on the lock body l.
into the cylinder (not shown) of the lock body 8, and
Alternatively, the lock body 8 can be configured to determine this by simply inserting the lock body 1.

In addition, when newly storing unlocking information in the memory 4 of the lock body 1 or rewriting it, the lock body 1 is attached to the writing device 14 as shown in FIG. The unlocking information of place 9 is input from the keyboard (not shown) to the control circuit 1.
8. Through the R/W control circuit 17, the memory 4 of the lock body l
to store desired unlocking information.

As described above, since the electronic lock device according to this embodiment is configured with a built-in CPU 3 that performs predetermined calculations in the TA main body l, the data is encrypted etc. and stored in the memory 4 by the calculations of the CPU 3. Unlocking information can be read for the first time. For this reason, unlike the conventional electronic lock 8M, it is impossible for a third party to read the unlocking information in the memory 4 from outside, and the [absolute security function] originally required for a single lock device is not achieved. It can be guaranteed.

In addition, since the lock body 1 only needs to have a built-in CPU 3 and memory 4 which are formed into semiconductor chips, mass production is possible and manufacturing is possible at low cost. Furthermore, the unlocking information can be easily rewritten in the memory 4 inside the lock body l as needed, so there is no drawback that it cannot be changed like a hatchet by a conventional mechanic, and it is highly versatile. Are better.

(Effects of the Invention) Since the present invention is configured as described above, mass production is possible at a relatively low cost, and furthermore, it is possible to prevent the key unlocking information from being imitated by a third party. Since it can be removed from the lock, it is possible to reliably and easily obtain the "absolute security function" that is the originally required function of a lock.
It has many amazing effects.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an electronic lock device according to an embodiment of the present invention, FIG. 2 is a front view of the lock body, FIG. 3 is a plan view of the lock body, and FIG. 4 is a writing device. The block diagram shown in FIGS. 5 and 6 are a front view and a plan view of a conventional key. (Explanation of symbols) l...Lock body 3...CPU4...Memory 7I...Electric contact 8...Bag body
9. ...Electric contact 11...Memory
12... Judgment circuit 13... Control circuit

Claims (1)

[Claims] a key body having a calculation means, a storage means storing predetermined unlocking information, and an I/O means for reading or writing the unlocking information in the storage means from the outside via the calculation means; a storage means that stores predetermined unlocking information; a comparison means that compares the unlocking information of the storage means with the unlocking information of the storage means of the key body; and locking/unlocking is controlled based on the comparison result of the comparison means. An electronic lock device comprising a lock body having a control means and an I/O means for reading unlocking information from the key body.