1、 毕业设计 （ 论文 ） 外文翻译 学生姓名： 院（系）： 机 电 信 息 学 院 专业班级： 电气工程及其自动化 0804 指导教师： 完成日期： 2011 年 12 月 15 日 Voice of Electronic Password-lock Design Abstract: The design is the use of voice recognition technology and keyboard input, Sunplus SPCE061A SCM in achieving a voice electronic password lock authentication s
2、ystem.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 reco
3、gnition, electronic password lock； FLASH 1 Introduction As peoples 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
4、 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
5、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 displa
6、y and output control and FLASH memory components. System is the main function: the training, the speakers 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 pr
7、ocessing, 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 complete control of the keyboard, and activate or release of locks, the final complet
8、ion 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 voi
9、ce 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 companys integrated development environment, Can easily complete
10、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,
11、 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 ran
12、ge 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 Asynchr
13、onous serial communication and software interruption interrupt source, Very suitable for real-time applications； unSPTM 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 featu
14、res 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
15、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 circ
16、uit design. 3.2 audio output circuit Sunplus SPCE061A MCU with audio output of dual-channel 1 O-bit D / A converters can complete user training, identification of various operations, such as the voice prompts. SPCE061A provide audio lose A way for the dual-channel DAC, in this manner, DAC1 and DAC2
17、conversion of analog current output signal passed AUD1 and AUD2-pin output, enter the number of volume into the P-DAC1 (write) (0 x7017) and P - DAC2 (write) (0 x7016) unit. 3.3 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,
