CN2401938Y

CN2401938Y - Computerized fingerprint identifier

Info

Publication number: CN2401938Y
Application number: CN 99258154
Authority: CN
Inventors: 张惠生
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-29
Filing date: 1999-12-29
Publication date: 2000-10-18
Anticipated expiration: 2009-12-29

Abstract

The utility model relates to a fingerprint identifier, which is a computerized fingerprint identifier detecting fingerprints of a human body by an image sensor. A computer identifies fingerprint images to confirm the identity of a person of which the fingerprints are detected. The utility model is suitable for identifying and checking the fingerprints to verify the identity on various occasions. The utility model replaces a password input unit, a card reader and a key switch, and is used for safety anti-theft devices, such as an electric lock, an automobile switch, etc. The utility model can work independently, and can also be used as a matching product for other devices.

Description

The computer Fingerprint Identification Unit

The utility model relates to a kind of fingerprint identification device, particularly relates to a kind of computer Fingerprint Identification Unit.

Generally adopt password, magnetic card, IC-card and various lockset to encrypt or safety precaution in multiple industries such as financial sectors at present, exist confidentiality poor, forget password easily, hold, carry shortcomings such as key damages easily, loses.Adopt the utility model computer Fingerprint Identification Unit can effectively overcome above-mentioned shortcoming, be applicable to multiple industry to fingerprint discern, evaluation, identity verification, replace password encryption, replace card reader, avoid memory cipher, hold and carry inconveniences such as key is easy to forget, damage, loss, can directly apply in the existing products such as electric lock, vehicle switch, also can be used as the auxiliary products of other equipment.This machine configuration communication interface circuit can carry out communication with computer and other equipment, can work alone by unit, can be used as the auxiliary products of other equipment again.

The purpose of this utility model provides a kind of privacy degrees height, safe and reliable, convenient and practical computer Fingerprint Identification Unit.

The purpose of this utility model implementation procedure:

The utility model computer Fingerprint Identification Unit mainly is made up of panel construction and circuit two parts, and panel construction part is by panel 1, and button 2, fingerprint detection 3, sounder 4, LCD 5, socket communication 6 are formed.Circuit part is made up of image sensor 7, light emitting diode 8, button 2, LCD 5, sounder 4, single chip circuit 9 and communication interface circuit 10.Its characteristics are that panel construction partly has panel 1, fingerprint detection 3 is arranged on the panel 1, imageing sensor 7 and light emitting diode 8 are equipped with in fingerprint detection 3 inside, there is button 2 in fingerprint detection 3 bottom, there is sounder 4 fingerprint detection 3 top, there is LCD 5 sounder 4 tops, and there is socket communication 6 LCD 5 tops.The image sensor 7 of circuit part, light emitting diode 8, button 2 all link with one-chip computer 9, and one-chip computer 9 links with LCD 5, sounder 4 and communication interface circuit 10.

Below in conjunction with accompanying drawing the course of work of the present utility model is further described:

Fig. 1 is the utility model panel synoptic diagram;

Fig. 2 is a block diagram of the present utility model;

Fig. 3 is the utility model communication interface circuit theory diagrams.

Narrate its course of work below:

Referring to accompanying drawing 1, Fig. 2, Fig. 3, the utility model computer Fingerprint Identification Unit mainly is made up of panel construction and circuit two parts, and panel construction part is by panel 1, and button 2, fingerprint detection 3, sounder 4, LCD 5, socket communication 6 are formed.Circuit part is made up of image sensor 7, light emitting diode 8, button 2, LCD 5, sounder 4, single chip circuit 9 and communication interface circuit 10.Its characteristics are that panel construction partly has panel 1, fingerprint detection 3 is arranged on the panel 1, imageing sensor 7 and light emitting diode 8 are equipped with in fingerprint detection 3 inside, there is button 2 in fingerprint detection 3 bottom, there is sounder 4 fingerprint detection 3 top, there is LCD 5 sounder 4 tops, and there is socket communication 6 LCD 5 tops.The image sensor 7 of circuit part, light emitting diode 8, button 2 all link with one-chip computer 9, and one-chip computer 9 links with LCD 5, sounder 4 and communication interface circuit 10.

The communication interface circuit as shown in Figure 3, differential receiver U1, differential drive U2 and socket communication 6 are arranged, under the control of one-chip computer 9, work, the RXD end that the output terminal of the input end of differential receiver U1 and differential drive U2 links to each other with socket communication 6, the output terminal of differential receiver U1 is connected to one-chip computer 9, the TXD end of one-chip computer 9 exports the input end of differential drive U 2 to, and the P2.5 end of one-chip computer 9 exports the 9th pin of socket communication 6 to.Communication interface circuit and RS-422A interface are incomplete same, its characteristics are that the communication interface circuit increases by one road output terminal, export the 9th pin of socket communication 6 to by the P2.5 end of one-chip computer 9, this output terminal is worked in the logic level mode, so the communication interface circuit possesses the function of unit work and on-line working.Unit when work, do not carry out communication, the P2.5 of one-chip computer 9 end is output as low level at ordinary times, fingerprint recognition by after be output as high level signal.This output terminal is not worked during on-line working, is set by button 2 to be open-circuit condition, and the communication interface circuit carries out communication work with RS-422A interface standard and support equipment.

Below the further narration course of work of the present utility model:

One-chip computer 9 control light emitting diodes 8 are intermittently luminous at ordinary times, detect the lighting source that has or not finger touch as image sensor 7, as finger touch fingerprint detection 3 o'clock, image sensor 7 has detected touch signal, one-chip computer 9 control light emitting diodes 8 continue luminous, supply with the operating illumination light source that image sensor 7 continues, one-chip computer 9 control chart image sensors 7 formally begin testing, read in fingerprint signal, fingerprint is converted to picture signal, flow to one-chip computer 9, one-chip computer 9 receives the back and sends Tip Sound to sounder 4, control light emitting diode 8 recovers interrupted luminous work, prepares next time and detects, and one-chip computer 9 will receive fingerprint image signal analysis, handle, extract corresponding fingerprint characteristic data, compare with the fingerprint characteristic data of putting on record, differentiate that identification result is by one-chip computer 9 outputs, to show, three kinds of modes of sound equipment and output signal realize.Fingerprint is identical, and LCD 5 shows " OK ", and sounder 4 sends melodious sound equipment, and one-chip computer 9 control communication interface circuit 10 send and pass through recognition data.Fingerprint difference, LCD 5 show that " NO ", sounder 4 send ear-piercing sound equipment, and one-chip computer 9 control communication interface circuit send and do not pass through recognition data.So far, finish single detection, identification work, use the course of work identical continuously.

Button 2 is as subsidiary function, is used for fingerprint and puts the people on record can not come to the input fingerprint personally the time, still can adopt the password encryption mode, perhaps adopts encrypting fingerprint at ordinary times, and special circumstances adopt password encryption.Another function of button 2 is the working method setting, sets unit working method or on-line working mode.During unit work, directly, be applicable to safety theftproof devices such as driving electric lock, vehicle switch by the defeated logic level signal of P2.5 end of one-chip computer 9.

The utility model is easy and simple to handle, safe and reliable, detection is rapid, is the stronger computer Fingerprint Identification Unit of a kind of practicality.

Claims

1. computer Fingerprint Identification Unit, the utility model mainly is made up of panel construction and circuit two parts, the panel construction part is by panel (1), button (2), fingerprint detection head (3), sounder (4), LCD (5), socket communication (6) is formed, circuit part is by image sensor (7), light emitting diode (8), button (2), LCD (5), sounder (4), single chip circuit (9) and communication interface circuit (10) are formed, it is characterized in that panel construction partly has panel (1), fingerprint detection head (3) is arranged on the panel (1), imageing sensor (7) and light emitting diode (8) are equipped with in fingerprint detection head (3) inside, there is button (2) in fingerprint detection head (3) bottom, there is sounder (4) fingerprint detection head (3) top, there is LCD (5) sounder (4) top, there is socket communication (6) LCD (5) top, the image sensor of circuit part (7), light emitting diode (8), button (2) all links with one-chip computer (9), one-chip computer (9) and LCD (5), sounder (4) and communication interface circuit (10) link.

2. according to claim 1 described computer Fingerprint Identification Unit, it is characterized in that the panel construction part is by panel (1), constituting of button (2), fingerprint detection head (3), sounder (4), LCD (5), socket communication (6), fingerprint detection head (3) is arranged on the panel (1), there is button (2) in fingerprint detection head (3) bottom, there is sounder (4) fingerprint detection head (3) top, and there is LCD (5) sounder (4) top, and there is socket communication (6) LCD (5) top.

3. according to claim 1 described computer Fingerprint Identification Unit, it is characterized in that circuit part constituting by image sensor (7), light emitting diode (8), button (2), LCD (5), sounder (4), single chip circuit (9) and communication interface circuit (10), image sensor (7), light emitting diode (8), button (2) link with one-chip computer (9), and one-chip computer (9) links with LCD (5), sounder (4) and communication interface circuit (10).

4. according to claim 1 described computer Fingerprint Identification Unit, it is characterized in that this communication interface circuit is by the P2.5 end of one-chip computer (9) and constituting of RS-422A communication interface circuit, the P2.5 end of one-chip computer (9) is worked in the logic level mode, is set at open-circuit condition when not working.

5. according to claim 4 described communication interface circuit, it is characterized in that the communication interface circuit by the combination of button (2) with one-chip computer (9), constitutes the set-up function of unit work and on-line working.