外文翻译语音电子密码锁的设计

1、voice of electronic password-lock design1 overview as people's living standards improve and strengthen the sense of security, safety locks system becomes essential. many electronic intelligence lock (fingerprint identification, ic identify) at home and abroad have already appeared. but these cha

2、racteristics of the products for a particular fingerprints and effective card, only applicable requirements of box, ark to tilt toward secrecy from a parochial view, door to wait. and if the general reader fingerprint public use existing easy mechanical damage, ic card still exist easily lost, damag

3、ed, etc. plus its cost is higher, in the certain extent limits the products to the popularization and promotion. then appeared combination lock magnetic lock, electronic locks, laser lock, sonic lock etc locks, they are the traditional keys in the foundation, uses one or more group password, differe

4、nt sounds different magnetic field, different sound waves, different beam waves, different image (such as fingerprints, fundus retinal etc.) to control the lock open. this paper adopts the speech recognition technology and keyboard control input combination, in cygnalspce061a the single board comput

5、er to realize a speech electronic combination lock authentication system. 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

6、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. 2 speech electronic combination lock system function this system is mainly composed of sunplus spce0

7、61a 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

8、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

9、 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,

10、it is possible errors, but through a number of training can make comparison and identification of voice greatly improved.3 the 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

11、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

12、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

13、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 b

14、e 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-

15、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.4 working principle spce061a built-in 8-channel 1 o-bit a / d converter, which w

16、ill 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, t

17、he completion of 8 khz voice signals in the collection, encoding and storage to off-chip flash, simplifying the circuit design.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.

18、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 number of volume into the p-dac1 (write) (0 x7017) and p - dac2 (write) (0 x7016) unit. led displays in each led through 5 2

19、0ma 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 m

20、onitors 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. enter key part of a total of the

21、number keys, passwords, keys set, the key shown password, to confirm removal of keys and passwords, 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

22、keyboard, which can be rational use of hardware resources and programming flexibility. recognition keyboard 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 p

23、ressed (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

24、the low level into a high, this trip can be sure this column cross-point button is pressed. spceo61a flash memory chip of only 32 k, large number of players in the voice of resources needs of expanding memory. the design sunplus technology, inc., spr4096 as a memory expansion, combined with spce061a

25、 broadcast voice. spr4096 in use, the use of spr4096 reswriter to read and write operation, used to store the speaker's personality parameters reference template.scm spce061a complete identification and display, the drive to realize the implementation of the electromagnetic lock function, and to

26、 detect its drive current value, to receive alarm signals sent by sensors, such as sending data. scm receive the type code, and stored in flash in the password, if the correct password, the drive for the implementation of the electromagnetic lock, if your password is not correct, allowing operators

27、to re-enter your password, can enter up to three if the three are not correct, the mcu through intelligent communication lines to monitor the police. scm will unlock operation and each time the electromagnetic actuator drive current value as a status information sent to the smart monitor, will recei

28、ve the report from the sensor interface information is also sent to the intelligent monitoring, as smart analysis of the basis. in the transmitter, electronic locks through the pulse transformer t will modulation good boost after data signals sent out in the receiver, pulse transformer t will receiv

29、e the data signal demodulator buck evacuation to reduce the carrier signal transmission in the process of wear and tear. in order to reduce communication and mutual interference between the power supply, chokes l, the choice of coupling capacitance c to comprehensive considerations, shown in figure

30、4, a carrier frequency f0-400khz, in order to ensure that most of the energy transmission signal to the receiver duan, l for a 33.7 h, c1-0.047 f.current surveillance function is to prevent the destruction of communication lines and electromagnetic actuator, for some reason the flow of electromagnet

31、ic coil currents too large burning coil. current monitor by maxim company's current / voltage converter chip max471. the chip can be measured current i into pairs to the output voltage u, and is measured wai, high precision, and u output voltage proportional to the measured current i characteris

32、tics. current monitor output voltage service a / d converter, read through the single a / d converter results in the current line was informed of the situation, through the timely detection of abnormal, issued its report.spce061a the development of online debugger probe to achieve. it uses a built-i

33、n online spce061 circuit simulation ice (in-circuit emulator) and sunplus's online series line programming. probe can work in sunplus ide integrated development environmental software nsp (tm), with editing, compile, link, debug and simulation capabilities. use ide friendly interface, the drop-d

34、own menu, shortcuts and quick access to the list can be ordered so that the user's programming and commissioning work more convenient and efficient. in addition, ide software simulation can not connect the simulation board under the simulated conditions of the various functions to the hardware d

35、ebugger. when the system work, the main function of the call to complete a specific function of the human voice training, training for the future success of voice recognition, according to the order to identify the implementation of the keyboard control operation, according to the different function

36、 keys, the implementation of the corresponding procedures, to complete password changes settings, contrast, shows, and other functions.5 development prospect the system uses a spce061a 16-bit microcontrollers embedded voice processing and control system, easy to use, easy to use, but the speech reco

37、gnition capabilities have yet to be improved. electronic password lock technology development so far, has been widely used in higher property security areas as information technology and computer technology and the constant development, voice, electronic password lock technology will have greater de

38、velopment and, ultimately, achieving efficiency, safety and reliable voiceprint control of the voice of electronic locks.语音电子密码锁的设计1概述随着人们生活水平的提高和安全意识的加强，锁具系统的安全性变得至关重要，许多电子智能锁（指纹识别、ic卡辨认）已在国内外相继面世。但是这些产品的特点是针对特定的指纹和有效卡，只能适用于保密要求的箱、柜、门等。而且指纹识识别器若在公共场所使用存在容易机械损坏，ic卡还存在容易丢失、损坏等特点。加上其成本较高，一定程度上限制了这类产品的

39、普及和推广。于是出现了密码锁磁性锁、电子锁、激光锁、声控锁等等锁具，它们是在传统钥匙的基础上，利用一或多组密码，不同声音不同磁场，不同声波，不同光束光波，不同图像(如指纹、眼底视网膜等)等来控制锁的开启。本文采用语音识别技术和键盘控制输入相结合，在cygnalspce061a单片机上实现一种语音电子密码锁认证系统。本课题是采用语音识别技术加键盘控制输入，在凌阳spce061a单片机上实现的一种语音电子密码锁认证系统。语音识别并配合电子密码锁的普通锁具功能，实现双重安全保障作用。该密码锁安全、有效、可靠，而且具有语音识别、密码预置、保密性强误码提示等特点。 2语音电子密码锁的系统功能系统主要由凌

40、阳spce061a单片机、mic输入电路、语音输出电路、4×4键盘、6位七段led显示、输出控制及flash存储器组成。系统主要的功能是：在训练时，说话人的声音通过麦克风进入说话人语音信号采集前端电路，由语音信号处理电路对采集的语音信号进行特征化和语音处理，提取说话人的个性特征参数并进行存储，形成说话人特征参数数据库。在识别时，将待识别语音与说话人特征参数数据库进行匹配，完成语音识别以及键盘的控制，实现激活或解除锁具，最终完成开锁。系统是依靠硬件和软件地密切配合，由凌阳spce061a单片机的灵活控制实现的。语音输入由于受到外部环境的干扰，有可能出现错误，但通过多次的训练可以使语音对

41、比和识别有很大的提高。3系统硬件的设计系统采用具有内核的凌阳spce061a单片机，该芯片内有adc、dac、定时器计数器、ram、flash等器件，加上适当的外围电路与配套的凌阳公司的集成开发环境，可以很方便地完成硬件设计和软件编程，从而实现上述功能。语音电子密码锁系统的核心是说话人识别模块。spce061a是凌阳公司开发的一种性价比非常高的16位单片机，内嵌2k字的sram和32k字的flash，具有32位可编程的多功能io端口；包含有7通道1o位通用ad转换器、内置麦克风放大器、自动增益控制agc功能的单通道声音ad转换器，以及具有音频输出功能的双通道1o位da转换器；在26v36v工作

42、电压范围内，工作频率范围为032mhz49152mhz，较高的处理速度使其能够非常容易、快速地处理复杂的数字信号；中断系统支持1o个中断向量以及l4个可来自系统时钟、定时器计数器、时间基准发生器、外部中断、键唤醒、通用异步串行通信及软件中断的中断源，非常适合实时应用领域；unsptm的指令系统还提供具有较高运算速度的16位×16位的乘法运算指令和内积运算指令，为其应用增添了dsp功能，在复杂的数字信号处理方面既非常便利，又比专用的dsp芯片便宜得多。4工作原理spce061a内置8通道1o位模数转换器，其中7个通道用于将模拟信号(例如电压信号)转换为数字量信号，1个通道只用于语音输入

43、，即通过内置自动增益控制放大器的麦克风通道(micin)输入。因此，可以直接将语音信号送给此输入通道，完成8khz语音信号的采集、编码并存储到片外flash中，简化了电路设计。凌阳spce061a单片机具有音频输出功能的双通道1o位da转换器可 以完成用户训练、识别等各种操作的语音提示。spce061a提供的音频输出方式为双通道dac方式，在此方式下，dac1和dac2转换输出的模拟量电流信号分别通过aud1和aud2引脚输出，输入的字量分别写入pdac1(写)(0x7017)和pdac2(写)(0x7016)单元。led显示器中每个发光二极管要通过520ma电流才能达到正常亮度，而spceo61a的io口输出电流可达到5ma，不用驱动电路即可达到正常亮度。系统为了满足可靠性设计，采用晶体管构成驱动电路。整个显示过程中采用动态显示，即六位显示器逐一轮流显示，每位持续lms或10ms循环一遍，也可以适当进行更改，但刷新速度不要小于每秒三十帧，这样，由于视觉暂留现象，看到的便是六位七段led显示器同时显示。按键输入部分共有数字键、密码设定键、密码显示键、确认键和密码清除键等16个按键，用于密码输入和功能按键的实现。本设计采用具有键唤醒功能的io的低8位ioa