JPS63289183A - Antitheft door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) This invention relates to a security door that can be opened only by a certain person by registering a fingerprint.

(Prior Art) Conventionally, there is a system in which a person holds a card and the lock is unlocked by having a reader read the card. However, in this case, there is a possibility that the card may be misused if it is lost, and there is also the inconvenience of having to take out the card and have it read by the reader every time you try to open the door.

(Problem to be solved by the invention) This invention does not require a person to have a card or key to open the door, and therefore there is no risk that the card or key will be misused due to loss of the card or key. There is no need to unlock the door or have the reader read the card; the door can be opened with the same action as opening an unlocked door, and can only be opened by authorized persons. The purpose is to provide security doors that cannot be used.

[Structure of the invention]

(Means for Solving the Problems) This invention provides a photoelectric conversion element embedded in a handle, and a lock only when a fingerprint of a finger touching the handle read by the photoelectric conversion element matches a registered fingerprint. and a means for canceling the.

(Function) In this invention, a photoelectric conversion element embedded in the handle reads the fingerprint of a finger touching the handle. Therefore, there is no need for a person to have a card or key to open the door, there is no risk that the card or key will be misused if lost, and there is no need to open the key or have the card read by a reader when opening the door. No action is required. In particular, since it reads the fingerprint of a finger touching the handle, it can be opened with the same action as opening an unlocked door, an effect that can only be achieved by embedding a photoelectric conversion element in the handle.

Further, in this invention, the lock is unlocked only when the fingerprint of the finger touching the handle read by the photoelectric conversion element matches the registered fingerprint. I can only open it.

(Example) Examples of the present invention will be described in detail below. 1st
Figure 1 is a block diagram showing the functional configuration of the security door of the present invention. A fingerprint reading means 3 which reads the image to obtain a fingerprint signal, and a read fingerprint data signal obtained by the fingerprint reading means 3 and a registered fingerprint data signal obtained by the registered fingerprint data generating means 4 registered in advance. a determining means 5 for comparing the signals and determining whether they match or do not match; and a determining means 5 provided on the door 1 and
M locks 8 with a coincidence signal obtained from M, and a tM unlocking stage 7 having means 6 for locking.

When the security door configured in this way is confirmed to be the person by touching the handle 2, the lock 8 is released and the door 1 is opened.
You can open it.

FIG. 2 is a sectional view showing the specific structure of the security door of the present invention. Incidentally, a cross section of the first handle 2 taken along line A-A is shown in FIG. Inside the door 1 is a ROM 9 in which the user's fingerprint data is registered.
A minicomputer 10 that performs data processing such as judgment and determination.
An electromagnetic locking device 11 operated by an electric circuit and an electric signal is installed inside. A fingerprint reading device 12 is provided inside the handle 2 to detect fingerprint data of a finger. The electromagnetic lock device 11 operates when a lock release signal is input, and slides from a locked position where the lock 8 fits into a recess 14 provided on the wall 13 side to an unlocked position where the lock 8 enters into the door 1. It is supposed to be done.

Figure 3 is a diagram schematically showing the AA cross section of Figure 2.
When a finger 15 touches the handle, the fingerprint 16 of that finger 15 lights up the LED.
illuminated by an illumination device 17 and a lens 18
The image is formed on an image receiving device 19 by a two-dimensional CCD via
It is configured to be converted into an electrical signal for obtaining data of the fingerprint 16. In this example, windows 20 made of a transparent material are provided at four locations around the handle 2, and a fingerprint reading section is provided in accordance with the agreement, so that it can be detected no matter where it is touched. .

The operation of the security door of the present invention begins with reading the fingerprints of 10 fingers of the person who can open the door 1 using a separately prepared two-dimensional CCD and writing the data into the ROM 9. The two-dimensional COD for registration may be configured to use one provided on the handle 2. Furthermore, the two-dimensional CCD is not limited to this, but MO
Other photoelectric conversion elements such as an 8I image device may also be used. Further, the ROM is not limited to this, and other memory elements such as a RAM may be used.

In the minicomputer 10, the fingerprint data of the fingerprint 16 of the finger touching the handle 2 read by the photoelectric conversion element 19 and the registered fingerprint data, that is, the data of the fingerprint of the person who can open the handle, are written in the ROM 9. It is determined whether or not the data matches the data. Based on this determination by the minicomputer 10, the electromagnetic lock 11 is operated.

The electric circuit, which includes an algorithm to determine whether the fingerprint of a finger touching the handle matches a registered fingerprint, is built into a semiconductor chip and installed inside the door. It is only necessary to supply power to the door, which has the effect of making it extremely easy to install the door.

All 10 fingers were registered in the ROM, but
The present invention is not limited to this, but for example, among the fingerprints of a person who can open a door, only the fingerprints of the middle fingers of both hands were written in the ROM to create a tenth edition. Even with this arrangement, unless the registered person consciously avoided touching the handle with his or her middle finger when opening the door, the door could be opened by unconsciously grasping the handle. On the other hand, we experimented by registering fingerprints other than the middle finger, but in this case we were unable to open the handle unless we consciously touched the handle with the registered finger. If only the middle finger fingerprint is used as in this example, 1
This method has the advantage that it requires less memory than the case where the fingerprint of 0 fingers is used, and the determination can be made at high speed.

In the above embodiment, the middle fingers of both hands were registered, but if only the fingerprint of the middle finger of one hand was written into the ROM, one person would have to consciously decide which hand should touch the handle. Compared to the case of using both hands, memory can be further reduced and judgments can be made faster.

In addition, the fingerprint reading device installed inside the handle 2 has one lens 18 and one two-dimensional C
CD19 was incorporated and a part of the outer periphery of the handle was made transparent.

The ROM registers the fingerprints of the middle fingers of both hands as in the previous embodiment, and in this case, the person must consciously touch the transparent part of the outer periphery of the handle with the middle finger, but the structure of the handle is This embodiment has the advantage of being simpler than the embodiment shown in FIG.

〔Effect of the invention〕

According to this invention, there is no risk that keys or cards that open the door will be misused if they are lost, and a specific person can open the door with the same action as opening an unlocked door. This has the effect of providing a security door that cannot be opened by a specific person.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the functions of the present invention, Fig. 2 is a cross-sectional view of a security door according to an embodiment of the invention, and Fig. 3 is a diagram illustrating a configuration in which the entire outer periphery of the handle can be read. A-A of
FIG. 4 is a cross-sectional view of a handle of a security door of the present invention showing a cross section, and FIG. 4 is a cross-sectional view of a handle showing another embodiment of the present invention. 1...Door, 2...Handle, 8.
...Lock, 9...ROM, 10...
・Mini computer, 11...electromagnetic lock, 1
2... Fingerprint reader, 17... LED, 1
8... Lens, 19... Two-dimensional CC
D. Agent Patent Attorney Noriyuki Chika Yudo Mitsuyuki Matsuyama

Claims (2)

[Claims] (1) A handle provided on the door, a fingerprint reading means provided on the handle to obtain a fingerprint signal by reading the image of the fingerprint of a finger touching the handle, and a read fingerprint data signal obtained by the fingerprint reading means. and a device for comparing a registered fingerprint data signal registered in advance to determine whether or not they match, and a lock provided on the door and having a device for unlocking with a matching signal obtained by the determining device. A security door characterized by comprising means. (2) A security door according to claim 1, characterized in that the door is built into an electric device that constitutes the determining means.