JP2006280528A - Biological authentication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a biological authentication apparatus for carrying out biological authentication with biological information of the finger without touching the apparatus. <P>SOLUTION: The finger inserted to a cylindrical finger insertion part 8 is irradiated with a light source 6 to read the biological information by a biological sensor 1, and a processing part 7 carries out the biological authentication using the read biological information. In this case, at the finger insertion part 8, a plurality of blowers 3 are arranged so as to surround the inserted finger, and a plurality of ranging sensors 4 for ranging a distance to the finger are arranged corresponding to the blowers 3. The processing part 7 adjusts the strength of blowing of air from a corresponding blower 3 according to a distance from the finger, guides and positions the finger depending on the strength of blowing, so as to read the biological information of the finger by the biological sensor 1 at the position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to a biometric authentication device that performs biometric authentication using biometric information of a finger.

In a conventional biometric authentication device using a finger (for example, Patent Document 1), light from a light source on the upper part (nail side) of the finger is applied so that biometric information such as a fingerprint or a vein is not contacted (without touching a sensor). And there is something that was made to read.
Japanese Patent Application Laid-Open No. H10-228561 describes a method in which a fingerprint surface portion is held in a non-contact manner in addition to reading the fingerprint in a non-contact manner.

JP 2003-085538 A (3rd to 4th pages, FIG. 1)

However, since it is difficult to fix the position of the finger due to the non-contact feature, the position of the finger is fixed by touching the finger with a guide or the like. For this reason, there was a problem that people with neatness might feel disgust.
In Patent Document 1, only the surface portion of the fingerprint is held in a non-contact manner, but since the portions other than the surface portion of the fingerprint are held in contact with the subject holding portion, there are the same problems as described above.

 The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a biometric authentication apparatus that can perform biometric authentication using finger biometric information without touching the apparatus.

 In the biometric authentication apparatus according to the present invention, in the biometric authentication apparatus that performs biometric authentication by collating biometric information of a finger read by light irradiation on the finger, a cylindrical shape that is disposed at the light irradiation position and into which the finger is inserted A plurality of blower devices that are arranged so as to surround the finger inserted into the finger insertion portion, and to blow out air to the inserted finger, and paired with the blower device and inserted into the finger insertion portion A plurality of distance measuring sensors that are arranged so as to surround the finger and measure the distance between each inserted finger, and the air blown from the corresponding air blower according to the distance between the finger measured by the distance measuring sensor. And a processing unit for guiding the finger by the intensity of the air flow, and a biosensor for reading the biometric information of the finger at a position guided by the processing unit. Are the same distance Induces finger a position, and performs biometric authentication by the biometric information read by the biosensor in this position.

 As described above, the present invention relates to a biometric authentication device that performs biometric authentication by collating biometric information of a finger read by light irradiation on a finger, and is arranged at a light irradiation position and is a cylindrical shape into which a finger is inserted The finger insertion part, a plurality of blowers arranged to surround the finger inserted into the finger insertion part, and for blowing air to the inserted finger, paired with the blower and inserted into the finger insertion part A plurality of distance measuring sensors that are arranged so as to surround the finger and measure the distance between each inserted finger, and the air blown from the corresponding air blower according to the distance between the finger measured by the distance measuring sensor. And a processing unit for guiding the finger by the intensity of the air flow, and a biosensor for reading the biometric information of the finger at a position guided by the processing unit. The distance of the same Since the biometric authentication is performed using the biometric information read by the biometric sensor at this position, the biometric information of the finger is used while maintaining the cleanliness without touching the finger and the like. Biometric authentication can be performed.

Embodiment 1 FIG.
The present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a biometric authentication apparatus according to Embodiment 1 of the present invention.
In FIG. 1, a biometric sensor 1 reads biometric information such as a fingerprint or a vein of a finger irradiated with light. The finger detection sensor 2 detects that a finger has been inserted into the finger insertion unit 8 of the biometric authentication device. A plurality of blower devices 3 are arranged in the finger insertion part 8 into which a finger is inserted, and each blower device 3 has a blower hole for sending air into the biometric authentication device. A plurality of distance measuring sensors 4 are provided so as to correspond to the blower 3 and measure the distance between the fingers at the positions where they are arranged. In the ID input device 5, the operator inputs his / her personal ID at the time of biometric authentication (registration and verification). The light source 6 is disposed so as to irradiate the finger with light from the fingernail side. The processing unit 7 controls 1 to 6 and performs biometric authentication. The finger insertion portion 8 has a cylindrical shape, and a plurality of pairs of the blower 3 and the distance measuring sensor 4 are arranged on the circumference of the cylinder.

FIG. 2 is an explanatory view for explaining the arrangement of the distance measuring sensor and the blower of the biometric authentication device according to Embodiment 1 of the present invention.
In FIG. 2, a finger detection sensor is provided near the opening of the cylinder forming the finger insertion portion 8 into which the finger is inserted. A total of 17 pairs of 8 pairs along the circumference and one pair at the back of the cylinder are installed.

FIG. 3 is a flowchart showing an operation at the time of biometric information registration of the biometric authentication device according to the first embodiment of the present invention.
FIG. 4 is a flowchart showing an operation at the time of biometric information collation of the biometric authentication device according to the first embodiment of the present invention.

Next, the operation will be described.
In FIG. 2, when a finger is inserted into the finger insertion portion 8 from the opening of the tube, the finger detection sensor 2 is detected, the blower 3 starts to move, and air is directed from the blow hole toward the finger. Sent.
At this time, the distance measuring sensor 4 installed so as to be paired with the blower 3 detects the distance to the finger, and if the distance is short, the blower of the corresponding blower 3 is strengthened, and if the distance is long, the blower is weakened. . By positioning the finger so that the operator senses the intensity of the air blow to the finger and the air blow intensity on the entire finger becomes uniform, the position of the finger can be fixed without touching the device.

Next, the operation of the processing unit 7 when registering biometric information will be described in detail with reference to the flowchart of FIG.
When the operator inputs a personal ID (S1) and inserts a finger into the finger insertion unit 8 of the biometric authentication device (S2), the finger detection sensor 2 detects the inserted finger (S3), The ventilation of the blower 3 is started, the side distance sensor 4 that measures the distance from the finger at each position operates, and the light source 6 operates (S4). If the measured values of all the distance measuring sensors 4 in the apparatus are not the same (S5), the finger is not positioned at the center of the finger insertion portion 8 of the biometric authentication apparatus, and the average distance of 17 pairs of sensors is calculated. (S6), the air blowing strength of the blower 3 that is far from the finger is increased (S7), and the air blowing strength of the blower 3 that is close to the finger is weakened (S8).
In this way, the distance measurement and the adjustment of the air blowing intensity are repeated, and if the measured values of all the distance measuring sensors 4 become the same (S5), the biometric information such as the fingerprint of the finger, the vein, etc. is read and registered (S9). At the same time, the distance from all the distance measuring sensors 4 to the finger is registered as the length and thickness of the finger (S10), the air blowing, distance measuring, and the light source are stopped (S11), and the finger is extracted from the biometric authentication device. (S12), the process ends.

Next, the operation of the processing unit at the time of collation of biometric information will be described with reference to the flowchart of FIG.
When the operator inputs the personal ID (S21) and inserts the finger into the finger insertion unit 8 of the biometric authentication device (S22), the finger detection sensor 2 detects the inserted finger (S23), The air blower 3 starts air blowing, the distance measuring sensor 4 that measures the distance from the finger operates, and the light source 6 operates (S24). If the measured values of all the distance measuring sensors 4 in the apparatus are not the same as the measured values at the time of registration (S25), the blowing intensity of the blowing apparatus 3 that is far from the finger is increased (S26), and the distance from the finger is increased. The blowing intensity of the blower 3 that is close to the distance is weakened (S27).
In this way, the distance measurement and the adjustment of the blowing intensity are repeated, and if the measured values of all the distance measuring sensors 4 are the same as the measured values at the time of registration (S25), the biometric information is read and authenticated (S28), The blowing, ranging, and light source are stopped (S29), the finger is extracted from the biometric authentication device (S30), and the process is terminated.
Thus, the operator can use the biometric authentication device without touching the guide (finger insertion unit) or the reading device at the time of registration and verification.

According to Embodiment 1, when performing biometric authentication using a finger, the finger can be guided to a certain position without contacting the device.
Also, since the finger does not touch the device, cleanliness can be maintained.

It is a block diagram which shows the biometrics authentication apparatus by Embodiment 1 of this invention. It is explanatory drawing explaining arrangement | positioning of the ranging sensor and ventilation apparatus of the biometrics apparatus by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement at the time of biometric information registration of the biometrics apparatus by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement at the time of biometric information collation of the biometrics apparatus by Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Living body sensor 2 Finger detection sensor 3 Blower device 4 Ranging sensor 5 Personal ID input part 6 Light source 7 Processing part 8 Finger insertion part

Claims (2)

  In a biometric authentication apparatus that performs biometric authentication by collating biometric information of a finger read by light irradiation on a finger, a cylindrical finger insertion portion that is disposed at the light irradiation position and into which the finger is inserted, and this finger insertion portion A plurality of blowers that are arranged to surround the finger inserted in, and are arranged to surround the fingers inserted into the finger insertion portion while making a pair with the blower, and for blowing air to the inserted fingers. A plurality of distance measuring sensors that measure the distance between the inserted fingers, respectively, according to the distance between the fingers measured by the distance measuring sensor, adjust the strength of the air blow from the corresponding blower, A processing unit for guiding the finger by the intensity of the air flow, and a biometric sensor for reading the biometric information of the finger at a position guided by the processing unit, the processing unit has the same distance from each distance measuring sensor to the finger. Place the above finger in the position And guide, biometric authentication device characterized by performing biometric authentication by the biometric information read by the biosensor in this position.   The processing unit registers biometric information read by the biometric sensor in advance, performs biometric authentication by comparing the registered biometric information with biometric information read by the biometric sensor at the time of collation, The distance from each distance measuring sensor to the finger when the biometric information is read is registered together, and at the time of the verification, the finger is guided to a position that matches the distance from each registered distance measuring sensor to the finger. The biometric authentication device according to claim 1, wherein:

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