JPH01247671A - Electronic key - Google Patents

Abstract

PURPOSE:To aim at the prevention of breakdown operation and the abatement of trouble occurrence ratio by setting up a pattern recognizing magnetic sensor in the inner part of a door or the like in a state of nonexposure, and relatively judging a pattern signal by access of a key where plural numbers of magnetic substances are buried. CONSTITUTION:Twelve pieces of magnets 10, for example, are embedded in a circular block-form aluminum holder 9 in an optional pattern and a key 8 is formed. In addition, a sensor setup space 17 is formed in a spot nearer to an outdoor part in a door 1, and a sensor unit 18 charged with a sensor 21 is embedded in nonexposure form. Then, with access of the key 8 to the sensor 21, a pattern signal out of this sensor 21 is compared with the preset intrinsic pattern of the door 1 by a comparing means constituted of a central processing unit 30 and a random access memory 33 and, after conformity is judged, a door lock mechanism 4 is driven. Accordingly, and breakdown operation is prevented from occurring, and trouble occurrence ratio is thus abatable.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electronic key for opening and closing doors in, for example, homes, offices, hotels, and the like.

(B) Prior Art Conventionally, as the electronic key of the above-mentioned example, there is an electronic key having a configuration as shown in FIG. 6, for example.

That is, the door 54 has door knobs 51 and 52 on the outdoor side and the indoor side, and has a door lock mechanism 53 inside.
A card guide 56 having a card insertion hole 55 is provided above the doorknob 51 on the outdoor side of the door 54, and a magnetic card reader 57 is attached to the back surface of the card guide 56, and a magnetic card 58 is installed in the card insertion hole 55. , manually slide the magnetic card 58 from above to below along the insertion hole 55 , read the magnetic information stored in the magnetic stripe 59 of the magnetic card 58 with the card reader 57 , and read the magnetic information stored in the magnetic stripe 59 of the magnetic card 58 . When the read information from the door 54 matches the setting information specific to the door 54, the door latch 6 of the door lock mechanism 53 in the open door 54
This electronic key is configured to control the locking of the door latch 60 of the door locking mechanism 53 when the door 54 is in the open state.

However, in the conventional device shown in above), if the magnetic card 58 is bent due to the user's carelessness, there is a problem that not only does the card 58 become unusable, but also the magnetic card reader 57 that reads magnetic information has a problem. Due to the structure in which the head is exposed in the card insertion hole 55, it is impossible to prevent intentional or malicious damage or theft by others using water, wire, counterfeit cards, etc.
There were many problems with this.

(c) Problems to be solved by the invention This invention eliminates the possibility of damage to the key due to the user's carelessness.
Another object of the present invention is to provide an electronic key that can prevent intentional or malicious damage or theft by others, and can significantly reduce the failure rate.

2) Means for Solving Problems This invention provides a key in which a plurality of magnetic materials are embedded in a non-magnetic material holder along an arbitrary pattern, and a key that is placed inside the door or inside a building near the door in a non-exposed manner near the outside. a plurality of magnetic sensors for pattern recognition embedded in the sensor, a comparison means for comparing an arbitrary pattern signal from the magnetic sensor with a preset unique pattern signal of the door by the proximity of the key to the magnetic sensor; This is an electronic key equipped with a control means for controlling opening and closing of a door lock mechanism based on a key signal.

(E) Effect According to the present invention, when the above-mentioned key is brought close to the magnetic sensor embedded part, the magnetic sensor is activated by the magnetic material of an arbitrary pattern embedded in this key, and the arbitrary pattern signal from the sensor is transmitted to the above-mentioned arbitrary pattern. After being compared with the unique pattern signal by the comparing means, only when the arbitrary pattern signal and the unique pattern signal match, the above-mentioned control means controls the door lock mechanism to open.

In addition, the above-mentioned key is protected by a non-magnetic holder, and unlike a door, it is formed in a structure that does not have a keyway for inserting the key into the structure near the door, and the magnetic sensor is installed on the door panel or in the structure near the door. covered with something.

(f) Effects of the Invention Therefore, the above-mentioned non-magnetic holder C can reliably prevent damage to the key due to user's carelessness.

In addition, since the magnetic sensor has a non-exposed structure, it is possible to prevent malicious damage or theft by others, which has the effect of significantly reducing the failure rate.

(g) Examples An embodiment of the present invention will be described in detail below based on the drawings.

The drawing shows an electronic key, and in FIG. 1, door knobs 2.3 are provided on the outdoor side and the indoor side of the door 1, and a door lock mechanism is installed inside the door 1 at the positions where these door knobs 2, 3 are installed. 4, and this door lock mechanism 4
The door latch 5 is configured to be removable from a door striker (not shown) of the fixed-side building.

A circular 17th bracket 6 is formed on the 1-side of the door knob 2 on the outdoor side of the door 1 described above, and an inverted triangular 27th bracket 7 is formed inside and outside the top of the 17th bracket 6. are doing.

Further, a circular block-shaped key 8 corresponding to the 17th key 6 described above is provided.

The above-mentioned key 8 is constructed as shown in FIGS. 2 and 3.

That is, a large number of magnets 10, for example a total of 12 magnets 10, are placed inside a rigid circular block-shaped aluminum holder 9.
By embedding it along an arbitrary pattern, the key body 11
At the same time, this key body 11 is integrally covered with a bottomed cylindrical resin cover 12, and the above-mentioned cover 1 is also integrally covered.
2 is formed with a triangular third marker 13 for matching with the 27th marker 7 on the door 1 side.

On the other hand, the door 1 described above has door panels 15 and 16 as surface panels integrally formed on the exterior surface of the door main plate 14 on the outdoor side and the exterior surface of the indoor side, as shown in FIG.
A sensor installation space 17 is formed in a predetermined portion of the interior of the magnetic sensor 10 near the outdoors, and a magnetic sensor unit 18 is buried in this space 17 in a non-exposed manner.

The above-mentioned magnetic sensor unit 18 is a unit in which a plurality of magnetic sensors 21 for pattern recognition are mounted on the circuit board 20 of a non-magnetic sensor case 19, and the above-mentioned key 8 is connected to the door panel 15 through the door panel 15. Magnetic sensor "21...
・When placed oppositely, the sensing operation is performed by the magnetic force of the magnet 10.

Each of the magnetic sensors 21 described above is connected to the CPU 30 via the circuit board 20.

The CPLJ 30 described above drives and controls the door lock mechanism 4 according to a program stored in the ROM 22 based on arbitrary pattern signals input from each magnetic sensor 21, and the RAM 23 controls the unique pattern signal of the door 1 and the door opening/closing position. Stores necessary data such as door latch position data to be recognized.

Here, when the above-mentioned key 8 approaches the magnetic sensor 21..., the comparison means for comparing the arbitrary pattern signal from the magnetic sensor 21... with the preset unique pattern signal of the door 1 is activated by the above-mentioned CPU 30. and RAM23,
Further, the control means for opening and closing the door lock mechanism 4 based on the coincidence signal from the comparison means is constituted by the above-mentioned CPU 30.

The operation of the electronic key constructed in this way will be explained with reference to the flowchart shown in FIG.

In the first step 31, the user aligns the key 8 with the circular 17-key 6 on the outside of the door 1, and then in the second step 3
2, when the third marker 13 on the key 8 side is opposed to the 27-key 7 position, a total of three magnets 10 on the line 24 in FIG. Corresponds to the array position of...

Next, in a third step 33, the CPU 30 inputs and processes arbitrary pattern signals from the respective magnetic sensors 21 described above.

In this embodiment, the magnet 1 is attached to the magnetic sensor 21.
0 are close to each other, this magnetic sensor 21 outputs a "1" signal, so in the state shown in FIG.
, 0.1. IJ digital arbitrary pattern signal is sent to CPU3
It is input to 0.

Next, in the fourth step 34, the CPtJ 30 reads out the unique pattern signal of the door 1 stored in the RAM 23 in advance, and
This national pattern signal is compared with the above-mentioned arbitrary pattern signal.

Next, in a fifth step 35, the CPU 30 determines whether the arbitrary pattern signal and the unique turn signal match each other.
Only when the unique pattern signal of the door 1 matches the above-mentioned arbitrary pattern signal at 1°0.1.1J, the process moves to the next sixth step 36.

In this sixth step 36, the CPU 30 determines whether the current door latch position is retracted or protruded, based on the presence or absence of a flag in a predetermined area of the RAM 23, for example. In other words, it is determined whether the current door 1 is in an open state or a closed state.

When the CP tJ 30 determines in the above-mentioned sixth step 36 that the door latch position is retracted, in the next seventh step 37, the CPU 30 drives and controls the door lock mechanism 4 to lock the door latch in the retracted position. 5, and in the next eighth step 38, the door is locked, and the series of processes is completed.

On the other hand, when the CPU 30 determines in the above-mentioned sixth step 36 that the door latch position is in the protruding position, in the next ninth step 39, the CPU 30 drives and controls the door lock mechanism 4 to lock the door latch in the protruding position. 5 is retracted, and in the next tenth step 40, the door is unlocked, and the series of processes is completed.

By the way, as shown in FIGS. 2 and 3, the above-mentioned key 8 has a rigid structure with a holder 9 made of a non-magnetic material, for example, aluminum, so that the key 8 is prevented from being damaged due to the user's carelessness. This aluminum holder 9 has the effect of reliably preventing this.

In addition, the door 1 described above is formed in a structure that does not have a key groove like the conventional structure, and the magnetic sensors 21... are attached to the door panel 1.
5, and each magnetic sensor 21... is constructed in a non-exposed structure, making it possible to prevent intentional or malicious damage or theft by others, and reduce the failure rate. It has the effect of significantly reducing

Regarding the correspondence between the configuration of the present invention and the above-described embodiments, the magnetic material of the present invention corresponds to the magnet 10 of the embodiment, the non-magnetic material holder corresponds to the aluminum boulder 9, and the comparison means corresponds to the magnet 10 of the embodiment. , RAM 23, and CI) LJ 30, and the control means corresponds to the CPU 30, but the present invention is not limited to the configuration of the above-described embodiment.

For example, as the above-mentioned magnetic material, a magnetized piece may be used instead of the magnet 10, and as the non-magnetic material holder, another holder made of hard synthetic resin may be used instead of the aluminum holder 9. Instead of embedding the magnetic sensor 21 in the door 1, it may be embedded in a structure such as a wall around the door 1. Furthermore, in a hotel or the like, the unique pattern signal of the door 1 is transmitted for a predetermined time cycle, for example, Of course, it is also possible to have a structure in which updates are performed in a 24-hour cycle.

In addition, the number and pattern of the magnets 10 embedded in the aluminum holder 9 and the circuit Je of the magnetic sensor unit 18
t l Number of magnetic sensors to be installed in 20 + J21 ad3
It goes without saying that the design and pattern are not limited to only the configurations of the embodiments.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a clear view of an electronic key, FIG. 2 is an exploded perspective view of the key, FIG. 3 is a sectional view taken along the line l-111 in FIG. FIG. 4 is a system diagram of an electronic key, FIG. 5 is a flowchart, and FIG. 6 is an explanatory diagram of a conventional electronic key. 1... Door 4... Door lock mechanism 8
...Key-9...Aluminum holder 10.
...Magnet 21...Magnetic sensor 23...
RAM 30...CPU 1 Figure 1 1A Electric, +Kid theory B Monthly electronic key system diagram 22 \, oocn. figure

Claims (1)

[Claims] (1) A key in which multiple magnetic materials are buried in a non-magnetic material holder along an arbitrary pattern, and multiple magnetic sensors for pattern recognition that are buried in a non-exposed manner inside the door or inside a building near the door toward the outside. and a comparison means for comparing an arbitrary pattern signal from the magnetic sensor with a preset unique pattern signal of the door when the key approaches the magnetic sensor, and opening/closing the door lock mechanism based on the matching signal from the comparison means. and control means for controlling the electronic key.