毕业设计外文翻译----语音电子密码锁的设计

毕业设计外文翻译

V oice of Electronic Password-lock Design

语音电子密码锁的设计

Voice of Electronic Password-lock Design

( / JUN E 200 6 )

Abstract:The design is the use of voice recognition technology and keyboard input, Sunplus SPCE061A SCM in achieving a voice electronic password lock authentication system.Voice recognition and electronic password lock function of the ordinary locks, and dual role of security. The password lock safe, effective, reliable, but also has voice recognition, password Preferences, confidentiality strong, tips and other features of error.

Key words:SPCE061A; voice recognition, electronic password lock; FLASH

1 Introduction

As people's living standards improve and strengthen the sense of security, safety locks system becomes essential, therefore a password lock, magnetic locks, electronic locks, laser lock, voice-activated lock locks, etc., they are On the basis of traditional keys, using one or more passwords, different voices, different magnetic field, different sound, different light beams of different images (such as fingerprints, retina retina, etc.) to control open the lock. In this paper, using speech recognition technology and keyboard to control the importation of the integration of SCM in Sunplus SPCE061A achieve a voice on the electronic certification system password lock.

2 voice electronic password-lock system

This system is mainly composed of Sunplus SPCE061A SCM, MIC input circuit, voice output circuit, 4 × 4 keyboard, six Qiduan LED display and output control and FLASH memory components. System is the main function: the training, the speaker's voice through a microphone into the speaker voice signal acquisition front-end circuit, by voice signal processing circuit on the acquisition of the characteristics of voice signals and voice processing, from the speaker's personality characteristics and parameters Store, a speaker parameters database. In recognition, will be voice recognition and speaker parameters database matching, voice recognition and complete control of the keyboard, and activate or release of locks, the final completion of the lock. System is relying on hardware and software to closely cooperate with the Sunplus SPCE061A SCM flexible control achieved.

Voice entry due to the interference of external environment, it is possible errors, but through a number of training can make comparison and identification of voice greatly improved

3 system hardware design

The system using a single kernel of Sunplus SPCE061A, the chip has ADC, DAC, timer / counter, RAM, FLASH, and other devices, coupled with appropriate external circuit and supporting Sunplus company's integrated development environment, Can easily complete the design of hardware and software programming, thus achieving the above-mentioned functions. Voice electronic code lock system is the core of speech recognition module.

SPCE061A is Sunplus has developed a very high price of the 16-bit microcontroller, embedded 2 K word of SRAM and 32 K word FLASH, with 32 programmable multi-purpose I / O ports include 7 Channel 1 O-General A / D converter, built-in microphone amplifier, AGC AGC function of the single voice of A / D converter, and the audio output of the dual-channel 1 O-bit D / A converter in the 2.6 V ~ - 3.6V operating range of frequency range of 0.32 MHz ~ - 49.152Mhz, high processing speed enable it to easily and quickly handle complex digital signal; suspension system to support 1 O interrupt vector And l4 from the system can be a clock, timer / counter, time benchmark generator, external interrupt, key wake-up call, Universal Asynchronous serial communication and software interruption interrupt source, Very suitable for real-time applications; u'nSPTM command system also provides high computing speed of 16 × 16-bit multiplication instructions and directives within the plot operation, the DSP for the application of additional features in a complex digital signal processing both Very convenient than the DSP chip for much cheaper.

3.1 voice input circuit

SPCE061A built-in 8-channel 1 O-bit A / D converter, which will be seven channels for analog signals (such as voltage signal) converted to digital signals, a channel used only for voice input, through the built-in automatic gain control amplifier The microphone channels (MIC-IN) input. Therefore, it can be directly given to the voice signal input channels, the completion of 8 kHz voice signals in the collection, encoding and storage to off-chip FLASH, simplifying the circuit design.