JPH0714048U - Electronic lock device - Google Patents

Abstract

(57) [Abstract] [Purpose] Electronic device that cannot be used by others [Construction] A fingerprint image input circuit is provided on the key 1, and the user of the key can be identified and analyzed by analyzing the fingerprint data registered in advance. A structure that sends an unlocking permission signal to the unlocking device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic lock device, and particularly to a device in which a fingerprint image input circuit is provided in a key.

[0002]

[Prior art]

 Recently, an electronic key has been adopted in which the information of the owner of the key is provided as a circuit in the key, and when this key is set in the lock, the information is analyzed by the lock judgment circuit and the lock is released or unlocked.

[0003]

[Problems to be solved by the device]

 In the conventional electronic key described above, the lock is unlocked even if a third party other than the specific user of this key uses this key.

The present invention provides an electronic lock device that selects a user by previously registering the fingerprint of the user in the determination circuit.

[0005]

[Means for Solving the Problems]

 According to the invention, the key has a fingerprint image input circuit and a contact for supplying power to this circuit and sending information of this circuit to the lock circuit. It is an electronic lock device that is configured by a circuit that sends power to the device, analyzes the key information, and sends a signal of unlockability to the unlock device.

[Action]

 When the user holds this key and sets it in the lock, the contact between the key and the lock is joined, and the power is supplied from the lock to the image input circuit of the key, and the fingerprint image input circuit of the key determines the fingerprint of the user. Then, it is compared with the user information registered in advance and judged, and a signal indicating whether or not the lock can be released is sent to the unlocking device. If the fingerprint data of the user is already registered in the judgment circuit, the lock will be unlocked.

[0006]

【Example】

 In FIGS. 1 and 2, a key 1 is composed of an insertion portion 3 having a bent notch 2 and a knob portion 4. The knob portion 4 is provided with a window 5 and a fingerprint image input circuit 6 inside the window 5. There is. There is a slight gap between the window 5 and the circuit 6, and a light 7 for irradiating the window 5 with a light beam is provided on the side portion between the gaps. The window 5 is a transparent plate, the image input circuit 6 is a CCD element, and the light 7 is an LCD. These circuits and elements are electrically connected to the contacts 8 and the plug 3 of the key. Reference numeral 9 is a U-shaped concave portion which is inclined so that the thumb can be just inserted therein, and the tip of the thumb is inserted into the window 5.

FIG. 3 is a block diagram of the main circuit configuration of this device. The fingerprint image input circuit is provided on the key 1. The lock (not shown) has a digital controller connected to this fingerprint image input circuit, a judgment circuit connected to this digital controller, and a data memory circuit connected to this judgment circuit. The signal coming from the circuit is digitized and sent to the judgment circuit. The judgment circuit compares the user's fingerprint data with the data in the data memory that has been stored in advance, and if OK, the unlock signal is sent. Release the latch of the feed lock to the unlocking device and turn the key to open the lock. If the insertion part 3 does not have a notch, if unlocking is OK, the key is inserted into the lock and unlocked automatically.

In addition to the above embodiments, it is possible to incorporate a determination circuit in the key 1.

The signal of the fingerprint image is converted into a digital signal and transmitted to the lock by infrared rays from the key. For this purpose, an infrared light emitting element and a light receiving element are provided on the key 1 and the lock so as to communicate with each other, and signals are transmitted and received.

[0010]

[Effect of device]

 According to this invention, the user can be identified by the key, and only the person related to the key can reliably unlock the lock, which is a safe electronic key. If the fingerprint identification circuit is an electronic circuit, it has the advantage that it can be easily carried without changing its size, and it cannot be used by others even if it is lost.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a key of the device of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a block diagram of a main circuit of the present invention.

Claims (1)

[Scope of utility model registration request] 1. A key has a fingerprint image input circuit and a contact for supplying power to this circuit and sending information of this circuit to a lock circuit. When the key is set on the lock, the key is attached to the key. An electronic lock device that consists of a circuit that sends power to analyze the key information and sends a signal to the lock unlock device to determine whether or not it can be unlocked.