【正文】 電子密碼鎖認證系統(tǒng) 本系統(tǒng)主要由凌陽 SPCE061A 單片機 MIC 輸入電路語音輸出電路 4 4 鍵盤 6位七段 LED顯示輸出控制及 FLASH存儲器組成系統(tǒng)主要的功能是在訓練時說話人的聲音通過麥克風進入說話人語音信號采集前端電路由語音信號處理電路對采集的語音信號進行特征化和語音處理提取說話人的個性特征參數(shù)并進行存儲形成說話人特征參數(shù)數(shù)據(jù)庫在識別時將待識別語音與說話人特征參數(shù)數(shù)據(jù)庫進行匹配完成語音識 別以及鍵盤的控制實現(xiàn)激活或解除鎖具最終完成開鎖系統(tǒng)是依靠硬件和軟件地密切配合由凌陽 SPCE061A 單片機的靈活控制實現(xiàn)的語音輸入由于受到外部環(huán)境的干擾有可能出現(xiàn)錯誤但通過多次的訓練可以使語音對比和識別有很大的提高 AbstractThe design is the use of voice recognition technology and keyboard input Sunplus SPCE061A SCM in achieving a voice electronic password lock authentication systemVoice 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 peoples living standards improve and strengthen the sense of security safety locks system bees essential therefore a password lock magic locks electronic locks laser lock voiceactivated lock locks etc they are On the basis of traditional keys using one or more passwords different voices different magic 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 passwordlock system This system is mainly posed of Sunplus SPCE061A SCM MIC input circuit voice output circuit 4 4 keyboard six Qiduan LED display and output control and FLASH memory ponents System is the main function the training the speakers voice through a microphone into the speaker voice signal acquisition frontend circuit by voice signal processing circuit on the acquisition of the characteristics of voice signals and voice processing from the speakers personality characteristics and parameters Store a speaker parameters database In recognition will be voice recognition and speaker parameters database matching voice recognition and plete control of the keyboard and activate or release of locks the final pletion 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 parison 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 panys integrated development environment Can easily plete the design of hardware and software programming thus achieving the abovementioned functions Voice electronic code lock system is the core of speech recognition module SPCE061A is Sunplus has developed a very high price of the 16bit microcontroller embedded 2 K word of SRAM and 32 K word FLASH with 32 programmable multipurpose I O ports include 7 Channel 1 OGeneral A D converter builtin microphone amplifier AGC AGC function of the single voice of A D converter and the audio output of the dualchannel 1 Obit D A converter in the 26 V 36V operating range of frequency range of 032 MHz 49152Mhz high processing speed enable it to easily and quickly handle plex 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 wakeup call Universal Asynchronous serial munication and software interruption interrupt source Very suitable for realtime applications unSPTM mand system also provides high puting speed of 16 16 bit multiplication instructions and directives within the plot operation the DSP for the application of additional features in a plex digital signal processing both Very convenient than the DSP chip for much cheaper 31 voice input circuit SPCE061A builtin 8channel 1 Obit 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 builtin automatic gain control amplifier The microphone channels MICIN input Therefore it can be directly given to the voice signal input channels the pletion of 8 kHz voice signals in the collection encoding and storage to offchip FLASH simplifying the circuit design 32 audio output circuit Sunplus SPCE061A MCU with audio output of dualchannel 1 Obit D A converters can plete user training identification of various operations such as the voice prompts SPCE061A provide audio lose A way for the dualchannel DAC in this manner DAC1 and DAC2 conversion of analog current output signal passed AUD1 and AUD2pin output enter the number of volume into the PDAC1 write 0 x7017 and P DAC2 write 0 x7016 unit 33 six Qiduan display of digital circuits LED displays in each LED through 5 20mA current to achieve the normal brightness and the IO I SPCEO61A output current up to 5 mA do not have to drive circuit to reach normal brightness In order to meet the reliability of systems design driven by a transistor circuit The whole process showed that the use of dynamic that is six monitors each cycle each sustained lms or 10 ms cycle again can also be appropriate to make changes but the refresh rate not less than 30 per second so that temporary stay because of the visual phenomenon Is six Qiduan see the LED display at the same time show 34 Matrix keyboard scan cir