JPH0812694B2 - Fingerprint identification device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention identifies individuals (hereinafter referred to as ID).
The present invention relates to an improvement of a fingerprint discriminating apparatus that discriminates the coincidence of fingerprints when performing the above.

[Prior Art] A traffic control device for opening and closing a door is often provided at the entrance / exit of a specific area requiring special monitoring, such as a computing center, a financial institution, or a nuclear facility. .

In addition to well-known number input means such as an ID card and a numeric keypad, fingerprint collation has recently been used to determine whether the traffic is appropriate. As an apparatus for automatically performing this collation, for example, weekly jewelry (August 1984) Issue 24, 31) There is a fingerprint judgment device of company I announced in the magazine.

This fingerprint judging device judges whether or not the fingerprint of one finger matches the one registered in advance, and the recognition accuracy was relatively high.

[Problems to be Solved by the Invention] In the fingerprint discriminator as described above, the fingerprint discriminator is a specific one.
Since the configuration is such that the fingers of a book are discriminated, there is a problem that even a person who is a registered passerby cannot pass when a specific finger is injured.

On the other hand, Japanese Patent Laid-Open No. 53-73936 discloses a technique in which the left and right forefingers are sequentially selected and scanned, and collated with a file.

However, the detection accuracy of the fingerprint identification device changes depending on the installation conditions, seasons, conditions of the human body, etc., and even if the left and right forefingers are matched with the fingerprint pattern stored in the file with the same accuracy, they do not always match. There are times when you don't.

In such a case, the detected person may stand in the cold outdoors, the hot outdoors, etc. for a long time, leading to deterioration of service.

Therefore, the present invention has been made to solve such a problem, and even a detected person who injured a specific finger can determine the matching of fingerprints with any other finger of the detected person, and
It is an object to provide a fingerprint discrimination device that can discriminate quickly.

[Means for Solving Problems] A fingerprint discrimination device according to the present invention includes an input unit for inputting a card of a person to be detected, a period for discriminating a fingerprint, and a period of time to detect the person to be detected.
A setting unit for setting an ID code, a finger selecting unit for specifying a fingerprint to be collated from fingerprints of the subject's finger registered in advance based on the output of the input unit and the setting unit, and the subject A fingerprint detecting and judging means for detecting a fingerprint of one finger inserted by the operator, judging whether the detected fingerprint matches the fingerprint of the finger specified by the finger selecting means, and outputting the result. If the fingerprint detection determination means does not determine that the fingerprint of the first finger identified by the finger selection means and the fingerprint of the finger inserted by the detection subject are not determined, the ID code of the detection subject and the The period for discriminating the fingerprint of the second finger is set in the setting unit, and the second period specified by the finger selecting unit is set.
The fingerprint detection determining means determines whether the fingerprint of the second finger and the fingerprint of the second finger of the subject are coincident with each other only during the set period.

[Operation] In the present invention, the fingerprint detection and the matching determination are performed for a predetermined time with respect to a specific finger designated by the finger selection means,
If the fingerprint detection determination means does not determine that the fingerprint of a particular finger matches, the finger detection means changes the finger detected and determined by the finger selection means, and a new finger is sequentially selected and selected. The fingerprint of the finger is detected, and when a match is detected based on the detection result, it is determined that the person is the same person.

[Embodiment] An embodiment in which the fingerprint identification device of the present invention is provided at the entrance of a traffic control area will be described below with reference to the drawings.

FIG. 1 is a block diagram of an entire circuit for explaining an embodiment of a fingerprint discrimination device of the present invention.

In the figure, reference numeral 1 is a fingerprint detection determination means for detecting a plurality of fingerprints of a finger of a passerby who enters and exits a traffic control area and determines whether any of them matches. 2 is a card reader for reading the number of a card given in advance to a person to be detected, who is a passerby, and 3 is a finger whose fingerprint is detected after the second person (second in this embodiment) of the person to be detected. The setting unit 4 for setting and outputting the ID code for the first detection is based on the match between the card number read by the card reader 2 and the ID code output by the setting unit 3 The finger selection command unit 5 that outputs a startup pulse for changing from the finger to the second finger receives the startup pulse output from the finger selection command unit 4 as a startup command, and based on the card number read by the card reader 2. This is a finger selection unit that sends a selection signal to the fingerprint detection determination means 1.

The fingerprint detection / judgment means 1 includes a fingerprint reader 11 for reading a fingerprint of a passerby as a video signal, and a feature pattern extraction device 12 for extracting and digitizing a feature pattern from a video signal of the fingerprint read by the fingerprint reader 11. , The characteristic pattern memory 13 that outputs the corresponding characteristic pattern data specified by the selection signal transmitted by the finger selection unit 5, and the characteristic pattern data and the characteristic pattern extraction device 12 that are output by the characteristic pattern memory 13. A match detector 14 that compares the digitized feature pattern output as a result and determines a match, and a fingerprint permission display 15 that displays the fingerprint approval or disapproval to the detected person based on the determination result of the match detector 14. Based on the determination result of the coincidence detector 14, the electric lock / unlock command is sent to the door (not shown) of the passage control area.

The setting unit 3 includes a perpetual calendar clock 31 for setting a predetermined time range of a predetermined month and day, and a start time setting switch.
32, end time setting switch 33, coincidence detectors 34, 35
And, the RS flip-flop 36 set and reset by these coincidence detectors, the ID code setting switch 37 for setting an ID code for identifying a new finger for detecting a fingerprint, and the RS flip-flop. And a gate 38 that is controlled to open and close by a valve 36, and is provided in a monitoring center that monitors the entire traffic control area. The start and end times and the ID code are set by the person to be detected through a dialogue with a monitoring center provided with the setting unit 3 through a communication means (not shown).

The finger selection command unit 4 is stored in a coincidence detector 41 that detects a coincidence between the card number read by the card reader 2 and the ID code set by the setting unit 3 and a place where the person to be detected cannot normally operate. The finger change request switch 42, which is inserted when the finger is installed and changed, the finger change request switch 42 and the coincidence detector
An OR circuit 43 which outputs a start pulse for changing to the second finger by taking the logical sum condition of the outputs of 41 and the OR circuit
It is composed of a knot circuit 44 that inverts the start pulse output at 43 and outputs an inverted start pulse.

The finger selection unit 5 sends a first decoder 51 that sends out an address signal in the characteristic pattern memory 13 of the finger for which the fingerprint detection determination means 1 should first detect the fingerprint based on the result of reading the card number of the card reader 2. Next to the first decoder 51, the second decoder 52 for sending out the address signal in the finger characteristic pattern memory 13 for detecting the fingerprint, and the fingerprint detection judging means 1 based on the reading result of the card number of the card reader 2 The third or third that sends a designation signal that specifies each of the five fingers (thumb, index finger, middle finger, ring finger, and little finger) whose fingerprints should be detected first, and any of the five fingers whose fingerprints should be detected next. 4 decoders 53 and 54, and a first gate 551 that controls ON / OFF of the address signal of the first decoder 51 based on the inversion start pulse output from the knot circuit 44 of the finger selection command unit 4. Fingerprint detection judgment is performed by adding the respective signals of the first and second gates 551 and 552 to the second gate 552 that controls ON / OFF of the address signal of the second decoder 52 based on the activation pulse of the finger selection command unit 4. An adder 57 which sends a selection signal to the characteristic pattern memory 13 of the means 1.
And the first to fifth OR circuits 561 to 565 which take the logical sum condition of the designation signals for specifying the respective five fingers of the third and fourth gates 553 and 554, and the first to fifth OR circuits 561. .. to 565, and a finger selection display 58 that displays the type of finger selected.

Next, the operation of the fingerprint discrimination device according to the present embodiment will be described.

First, a passer-by inserts a card into the card reader 2, the card number is read by the card reader 2, and the first decoder
At 51, the address signal of the first finger, which is previously specified from the card number, for example, the index finger is output. On the other hand, the card number of the card reader 2 is also input to the third decoder 53, and a designation signal for identifying each of the five fingers of the third decoder 53 is supplied with a third gate 553 and first to fifth OR circuits 561.
It is input to the finger selection display device 58 through the to-565, and the finger selection display device 58 displays the finger to be inserted / pressed by the passerby on the fingerprint reader 11 of the fingerprint detection / judging means 1.

Further, the passerby inserts / presses his / her finger into the fingerprint reader 11 of the fingerprint detection / judgment means 1 following the operation of the card reader 2,
The fingerprint is read, and the coincidence detector 14 compares the digitized characteristic pattern of the finger and the characteristic pattern data output from the characteristic pattern memory 13 based on the selection signal output from the adder 57. If it is determined that they match, an electric lock / unlock signal is sent to the door and the permission display is displayed on the fingerprint permission display 15.The passerby confirms the fingerprint permission on this permission display. , You can open the door and pass.

Next, when no match is detected by the match detector 14, a period in which the passerby who is the detected person distinguishes the fingerprint with the middle finger which is the second finger through the communication means to the monitoring center ( Requests that the setting unit 3 set the start time and end time) and the ID code. In the monitoring center, the start time is set by the start time setting switch 32 of the setting section 3, the end time is set by the end time setting switch 33, and the ID code is set by the ID code setting switch 37. Coincidence detector 34
Detects a match between the calendar clock 31 and the start time, and outputs a set signal to the RS flip-flop 36 when a match is detected. The RS flip-flop 36 is
When the set signal is received, the gate 38 is controlled to open. When the gate is opened, the ID code set by the ID code setting switch 37 is transmitted to the finger selection command section 4. Further, the coincidence detector 35 detects the coincidence of the end time with the perpetual calendar clock 31, and when the coincidence is detected, outputs a reset signal to the RS flip-flop 36. Upon receiving the reset signal, the RS flip-flop 36 receives the gate signal.
38 is controlled to be closed, and the transmission of the ID code to the finger selection command section 4 is stopped. The finger selection command unit 4 judges whether the ID code matches the card number read by the card reader 2, and if this match is detected, the second and fourth gates 552 and 554 of the finger selection unit 5 are detected. Send a start signal to. The second gate 552 is turned on by this activation signal, and the second decoder 552 is based on the card number read by the card reader 2.
Second feature pattern memory for the middle finger to be detected at 52
While the address signal in 13 is input to the characteristic pattern 13 via the adder 57, a display indicating that the middle finger has been selected is made on the finger selection display 58, and according to this display, the passerby is the forefinger and, Similarly, with respect to the middle finger, the fingerprint detection determining means 1 determines that the fingerprints match, and when the matching is determined, the passerby can pass.

Here, following the operation of the card reader 2, a finger is inserted / pressed into the fingerprint reader 11 to read the fingerprint,
The coincidence detector 14 determines the feature pattern data output from the feature pattern memory 13 based on the read digitized feature pattern of the finger and the selection signal output from the adder 57. The fingerprint of one finger inserted by the person to be detected is detected, and it is judged whether the detected fingerprint matches the fingerprint of the finger specified by the finger selection means below, and the result is output. It constitutes means 1.

If the fingerprint detection determination unit 1 does not determine that the fingerprints of a specific finger match, the finger selection command unit 4 and the finger selection unit 5 select the finger to be detected and determined by the fingerprint detection determination unit 1. A finger selecting means for specifying the position.

As described above, the fingerprint discriminating apparatus of the present embodiment includes the input unit 2 for inputting the card of the person to be detected, the setting unit 3 for setting the period for discriminating the fingerprint and the ID code of the person to be detected, and the input unit. Based on the output of the setting unit and the output of the setting unit, the finger selection means 4 and 5 for specifying a fingerprint to be collated from among the fingerprints of the finger of the detected person registered in advance, and the fingerprint of one finger inserted by the detected person. And the detected fingerprint and the finger selection means 4,5.
And a fingerprint detecting and judging means 1 for judging the coincidence with the fingerprint of the finger specified by and outputting the result.
If the fingerprint detection determination means 1 does not determine that the fingerprint of the first finger identified by 4,5 and the fingerprint of the finger inserted by the subject are not determined, the ID code of the subject and the second
The period for distinguishing the fingerprint of the second finger is set in the setting unit 3,
The fingerprint detection determination unit 1 determines whether the fingerprint of the second finger identified by the finger selection unit and the fingerprint of the second finger of the detection subject match only for the set period. .

Therefore, the fingerprint identification device of the present embodiment has the following installation conditions:
Depending on the season and conditions of the human body, the accuracy is set so that the detection accuracy does not change, and multiple fingers are compared with the fingerprint pattern stored in the file. It can be recognized by changing the finger, and the result can be obtained quickly. As a matter of course, there is an effect that even a detected person who injured a specific finger can determine whether the fingerprints match with another finger of the detected person.

It should be noted that the following configuration may be adopted instead of the configuration of the embodiment.

The fingerprint detecting / judging means 1 of the present embodiment is configured to sequentially detect two types of fingers (index finger, middle finger) with the single fingerprint reader 11, but it is always possible to use a plurality of types (two to five types) of fingers.
It is also possible to adopt a configuration in which each fingerprint is detected at the same time, and if any of the detected fingerprints matches, it is determined that the person is the same person who registered the fingerprint. In the case of a match, the monitoring center may instruct which one is valid, and the same person may be determined according to the instruction. That is, the fingerprint detection determination means 1 in the case of implementing the present invention sequentially detects the fingerprints of a plurality of fingers of the subject, one by one, and detects the detected fingerprint and the fingerprint of the subject registered in advance. It suffices that the matching be sequentially determined one by one.

The card reader 2 of this embodiment may be constituted by a ten-key pad or any other device capable of inputting a personal ID code.

The finger selection display 58 of the present embodiment is configured to be a display capable of visually recognizing which of the five fingers is read, an auditory (voice) display, and a tactile (finger sensation for the blind) display. You can also

The card reader 2 of the present embodiment uses an ID obtained by inputting with an ID card, but in addition to this, which of the five fingers is placed first and next is placed on the fingerprint reader 11.
The content of the ID may be used.

The electric lock / unlock command to the door of the entrance / exit may be output as an opening / closing command when the door is an automatic door.

The fingerprint detection determination means 1 can also be configured to sequentially determine three or more types of fingers.

At the monitoring center, set the time and
It can also be configured so that the ID code can be set.

[Effects of the Invention] As described above, the fingerprint identification device of the present invention includes the fingerprint detection determination means and the finger selection means, and if the fingerprint detection determination means does not determine a match, the fingerprint selection device identifies the fingerprint. Since the fingerprint detection and matching are sequentially performed on the other fingers that have been touched at predetermined time intervals, if the fingerprint detection determination means does not determine a match, the fingerprint selection is performed on the finger specified by the finger selection means. For the detected person who can detect and match and has a problem in fingerprint identification, if a fingerprint match is not detected, select a new finger separately with the finger selection means,
A fingerprint is detected for the selected finger, and when a match is detected based on this detection result, it can be determined that the person is the same person, and the newly set finger can be used to pass, and the same can be applied to the passage control. The judgment of the person can be flexibly and smoothly operated, and since it can be newly set later, an arbitrary judgment can be made on the monitoring side.

Further, in the present invention, the accuracy is set so that the detection accuracy does not change depending on the installation condition, the season, the condition of the human body, etc., and a plurality of fingers are matched with the fingerprint pattern stored in the file, and the two match. If you don't, you can recognize each finger by changing your finger every predetermined time.
The result can be obtained quickly. The service will not be deteriorated due to installation conditions, seasons, conditions of the human body, and the like. As a matter of course, there is an effect that even a person to be injured with a particular finger can determine the matching of fingerprints with any other finger.

[Brief description of drawings]

FIG. 1 is a block diagram of an entire circuit for explaining an embodiment of a fingerprint discrimination device of the present invention. In the figure, 1: fingerprint detection judgment means, 2: card reader 3: setting section, 4: finger selection command section 5: finger selection section, 11: fingerprint reader 12: feature pattern extraction device 12: feature pattern memory 14: match detection Device, 15: Fingerprint authorization display device. In the drawings, the same reference numerals and symbols indicate the same or corresponding parts.

Claims (2)

[Claims] 1. An input means for inputting a card of a person to be detected, a setting section for setting a period for distinguishing a fingerprint and an ID code of the person to be detected, and based on outputs of the input means and the setting section, Finger selection means for identifying a fingerprint to be collated from among the fingerprints of the subject's finger registered in advance, and the fingerprint of one finger inserted by the subject is detected, and the detected fingerprint and the finger selection Judge the fingerprint of the finger identified by the method,
The fingerprint detection determination means for outputting the result is provided, and the fingerprint detection determination means determines that the fingerprint of the first finger identified by the finger selection means and the fingerprint of the finger inserted by the subject are matched. If not, the ID code of the detected person and the period for discriminating the fingerprint of the second finger are set in the setting section, and the fingerprint of the second finger specified by the finger selecting means and the fingerprint of the detected person. A fingerprint discriminating apparatus, characterized in that the fingerprint detection discriminating means discriminates whether the fingerprint of a second finger coincides with the fingerprint. 2. The detection subject makes a setting request to the setting unit via the monitoring center during the period for discriminating the ID code of the detection subject and the second finger. The fingerprint identification device described.