RU24230U1 - FINGERPRINT IDENTIFICATION DEVICE FOR PROTECTION FROM UNAUTHORIZED ACCESS - Google Patents

Description

finger to the scanner. If the entered code matches one of the registered ones, the recognition device analyzes the match with the corresponding fingerprint. The simultaneous coincidence of the code and the fingerprint determines the signal for unlocking the lock.

The disadvantage of the described device is the low level of secrecy due to the fact that the device uses a wired channel for transmitting the image of the fingerprint, and also because the scanner is located on the panel of the lock control device, which partially reveals the principle of operation of this device and increases the likelihood of unauthorized access to the object.

The objective of the invention is to increase the reliability and secrecy of the device through the use of wireless optical communication for transmitting fingerprint images, which reduces the likelihood of unauthorized access to the object.

The proposed device has significantly greater secrecy compared to prototypes, primarily due to the fact that the device solves the problem of anonymity when using known means of unlocking locks (key, magnetic cards, key rings) and at the same time is hidden (the appearance does not reveal the presence of an additional device that controls access to the object by fingerprints and mechanically locking the lock, opened with a regular key).

The problem is solved by creating a device with fingerprint identification for protection against unauthorized access, made in the form of a portable transmitting unit containing means for reading a fingerprint, made, for example, as a scanner, means for converting a digital image signal into an optical signal, and stationary a receiving unit comprising means for receiving and converting an optical signal into a digital one, means for processing a signal and identifying a fingerprint and mouth oystvo lock, the portable transmitting unit is optically coupled with the stationary receiving unit. Means for converting a digital image signal can be made in the form of series-connected

a synchronization unit, a modulator and a semiconductor laser, and the means for receiving and converting an optical signal into a digital one can be made in the form of an optoelectronic converter consisting of a photodetector device and a synchronization unit connected in series. The portable transmitter unit contains an autonomous power source and a start button. The rest is all mine

The invention is illustrated in the drawings:

FIG. 1 - General view of the device

FIG. 2 - Scheme of a portable transmitting unit.

Fig.Z. - Scheme of the stationary receiving unit.

The device with fingerprint identification for protection against unauthorized access is made in the form of a portable transmitting 1 and stationary receiving 2 blocks. The portable unit 1 contains a start button 3, an autonomous power supply 4, a scanner 5 and an electron-optical converter 6 (serially connected synchronization unit 7, a modulator 8 and a semiconductor laser 9). The stationary receiving unit 2 contains a power source 10, an optoelectronic converter 11 (series-connected photodetector 12 and a synchronization unit 13), an image processing and comparison device 14, a device for mechanically locking the lock 15.

The device operates as follows.

When a person approaches the protected object by the start button 3 on the portable transmitting unit 1, the power of the scanner 5 is turned on, which reads the image of the fingerprint. The electronic signal from the output of the scanner 5 is transmitted to the electron-optical converter 6. The infrared signal received at the output is transmitted through the air channel 16, first through the tube or through hole in the key 17, through the keyhole 18 and then through the internal space 19 of the protected object to the optical-electronic a transducer 11 receiving an optical signal and issuing a digital signal.

transmitted to the processing and comparison device 14. When the fingerprint of the registered user coincides with the image, the mechanical lock of the lock is removed 15. As the processing and comparison of images 14, for example, a specialized processor manufactured by SequGen (South Korea) can be used to solve similar problems for door locks working on the basis of fingerprint identification and which are an analogue of an individual recognition device (JP 2903047 B2 6272440 A, IPC 6, E 05 B 49/00, 1999), described go as a prototype. Mechanical lock 15, which is a regular pin that prevents the key from turning, can be applied to almost any type of lock.

The simplicity and secrecy of the lock locking device allows you to use the proposed device for almost any lock design. The image signal from the scanner 5, transmitted by the electron-optical converter 6 through the keyhole 18, cannot be intercepted by any foreign devices, since it does not pass through the open space. The length of the transmitted code sequence is about 15,000 bits (binary bits), which significantly increases the protection against repetition by other technical means that are not part of the proposed device. If the image signal was not previously transmitted to the receiving device, the lock is completely mechanically blocked.

Claims (3)

1. The device with fingerprint identification for protection against unauthorized access is made in the form of a portable transmitting unit containing means for reading a fingerprint, made, for example, in the form of a scanner, means for converting a digital image signal into an optical signal, and a stationary receiving unit, comprising means for receiving and converting an optical signal into a digital one, means for processing a signal and identifying a fingerprint and a lock lock device, wherein hydrochloric transmitting unit optically connected with the stationary unit via the receiving optical channel.  2. The device according to claim 1, in which the means for converting the digital image signal is made in the form of series-connected synchronization unit, modulator and semiconductor laser, and the means for receiving and converting the optical signal into digital is made in the form of an optoelectronic converter consisting of in series connected photodetector and synchronization unit. 3. The device according to claim 1, in which the portable transmitting unit contains an autonomous power source and a start button.