语音电子密码锁的设计外文翻译资料

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1、 1 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 system.Voice recognition and electronic password lock function of the ordinary locks, and

2、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 impro

3、ve 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 fiel

4、d, 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 electron

5、ic 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 traini

6、ng, 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 processing, from the speakers personality characteristics and parameters Store, a speaker p

7、arameters 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

8、 Sunplus SPCE061A SCM flexible control achieved. 2 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 Sunplu

9、s 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 the design of hardware and software programming, thus achieving the above-mentioned fun

10、ctions. 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 con

11、verter, 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 handl

12、e 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 fo

13、r 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 features in a complex digital signal processing both Very convenient than the DSP chip for m

14、uch 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 c

15、hannels (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, 3 encoding and storage to off-chip FLASH, simplifying the circuit design. 3.2 audio output circuit Sunplus SPCE061A MCU with audio output of dual-c

16、hannel 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 conversion of analog current output signal passed AUD1 and AUD2-pin output, enter the

17、 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

18、 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

19、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. 3.4 Matrix keyboard scan circuit Enter key part of a total of the number keys, passwords, keys set, the key shown password, to confirm removal of keys and passwords,

20、 and other key 16 keys, enter your password and for the realization of function keys. This design uses a wake-up function keys of the IO low eight IOA0 - IOA7 to 4 4 as the control input of the keyboard, which can be rational use of hardware resources and programming flexibility. Recognition keyboar

21、d keys are pressed whether the method is: Let all out lines are low, check the traffic on whether there is a high-level, if there is a statement that a key is pressed, if not, then no keys are pressed (Actual programming keys should be taken into account the impact of jitter, usually always use the software delay processing methods Consumers buffeting). Identify specific keys used scanning method: home-by-zero level out and check the level of the carriageway of the changes, if a line from the low level into a high, this trip can be sure this column cross-point Button is pressed.