Buffer circuit-based high-precision wireless voice recognition access control system

Abstract

The invention discloses a buffer circuit-based high-precision wireless voice recognition access control system, which mainly consists of a central processing unit, a second wireless transmission module, an A / D (analog to digital) switching circuit, an access control driving circuit, an alarm module, a display module, a memory, a first wireless transmission module, a frequency stabilization circuit, a sound sensor, an access control, a signal processing circuit, a PC (personal computer) and the like, wherein the A / D switching circuit, the access control driving circuit, the alarm module, the display module, the memory and the first wireless transmission module are respectively connected with the central processing unit; the frequency stabilization circuit is connected with the A / D switching circuit; the sound sensor is connected with the frequency stabilization circuit; the access control is connected with the access control driving circuit; the signal processing circuit is connected with the second wireless transmission module; the PC is connected with the signal processing circuit. According to the buffer circuit-based high-precision wireless voice recognition access control system disclosed by the invention, data transmission is performed by adopting a wireless manner to realize access control and the information exchange of the PC, therefore the construction difficulty is reduced, and an administrator is helped to transform an access control network in the future; the buffer circuit-based high-precision wireless voice recognition access control system disclosed by the invention is provided with a buffer circuit; the buffer circuit can be used for smoothly inputting a signal into the central processing unit, so that the phenomenon that signal processing and recognition of the central processing unit is influenced by signal fluctuation is avoided, and the recognition precision of the buffer circuit-based high-precision wireless voice recognition access control system disclosed by the invention is improved.

Description

technical field [0001] The invention relates to an access control system, in particular to a buffer circuit-based high-precision wireless voice recognition access control system. Background technique [0002] The access control system is a new type of modern public security management system. It integrates microcomputer automatic identification technology and modern security management measures. It involves many new technologies such as electronics, machinery, optics, computer technology, communication technology and biotechnology. It is an important department to achieve security at the entrance and exit. Effective protection of prevention management. Most of the existing access control systems use wired transmission, and the communication between each controller and PC is generally carried out through RS-232, RS-485 or CAN bus. The physical connection between devices is complicated, and network reconstruction and construction are difficult. Adding new wiring is even more ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing access control system is a wired transmission mode, the physical connection between the devices is complicated, and the network reconstruction is difficult, and to provide a high-precision wireless voice recognition access control system based on a buffer circuit

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