外文翻譯語音電子密碼鎖的設計

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.語音電子密碼鎖的設計1概述隨著人們生活水平的提高和安全意識的加強，鎖具系統(tǒng)的安全性變得至關重要，許多電子智能鎖（指紋識別、ic卡辨認）已在國內(nèi)外相繼面世。但是這些產(chǎn)品的特點是針對特定的指紋和有效卡，只能適用于保密要求的箱、柜、門等。而且指紋識識別器若在公共場所使用存在容易機械損壞，ic卡還存在容易丟失、損壞等特點。加上其成本較高，一定程度上限制了這類產(chǎn)品的

39、普及和推廣。于是出現(xiàn)了密碼鎖磁性鎖、電子鎖、激光鎖、聲控鎖等等鎖具，它們是在傳統(tǒng)鑰匙的基礎上，利用一或多組密碼，不同聲音不同磁場，不同聲波，不同光束光波，不同圖像(如指紋、眼底視網(wǎng)膜等)等來控制鎖的開啟。本文采用語音識別技術(shù)和鍵盤控制輸入相結(jié)合，在cygnalspce061a單片機上實現(xiàn)一種語音電子密碼鎖認證系統(tǒng)。本課題是采用語音識別技術(shù)加鍵盤控制輸入，在凌陽spce061a單片機上實現(xiàn)的一種語音電子密碼鎖認證系統(tǒng)。語音識別并配合電子密碼鎖的普通鎖具功能，實現(xiàn)雙重安全保障作用。該密碼鎖安全、有效、可靠，而且具有語音識別、密碼預置、保密性強誤碼提示等特點。 2語音電子密碼鎖的系統(tǒng)功能系統(tǒng)主要由凌

40、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

41、比和識別有很大的提高。3系統(tǒng)硬件的設計系統(tǒng)采用具有內(nèi)核的凌陽spce061a單片機，該芯片內(nèi)有adc、dac、定時器計數(shù)器、ram、flash等器件，加上適當?shù)耐鈬娐放c配套的凌陽公司的集成開發(fā)環(huán)境，可以很方便地完成硬件設計和軟件編程，從而實現(xiàn)上述功能。語音電子密碼鎖系統(tǒng)的核心是說話人識別模塊。spce061a是凌陽公司開發(fā)的一種性價比非常高的16位單片機，內(nèi)嵌2k字的sram和32k字的flash，具有32位可編程的多功能io端口；包含有7通道1o位通用ad轉(zhuǎn)換器、內(nèi)置麥克風放大器、自動增益控制agc功能的單通道聲音ad轉(zhuǎn)換器，以及具有音頻輸出功能的雙通道1o位da轉(zhuǎn)換器；在26v36v工作

42、電壓范圍內(nèi)，工作頻率范圍為032mhz49152mhz，較高的處理速度使其能夠非常容易、快速地處理復雜的數(shù)字信號；中斷系統(tǒng)支持1o個中斷向量以及l(fā)4個可來自系統(tǒng)時鐘、定時器計數(shù)器、時間基準發(fā)生器、外部中斷、鍵喚醒、通用異步串行通信及軟件中斷的中斷源，非常適合實時應用領域；unsptm的指令系統(tǒng)還提供具有較高運算速度的16位×16位的乘法運算指令和內(nèi)積運算指令，為其應用增添了dsp功能，在復雜的數(shù)字信號處理方面既非常便利，又比專用的dsp芯片便宜得多。4工作原理spce061a內(nèi)置8通道1o位模數(shù)轉(zhuǎn)換器，其中7個通道用于將模擬信號(例如電壓信號)轉(zhuǎn)換為數(shù)字量信號，1個通道只用于語音輸入

43、，即通過內(nèi)置自動增益控制放大器的麥克風通道(micin)輸入。因此，可以直接將語音信號送給此輸入通道，完成8khz語音信號的采集、編碼并存儲到片外flash中，簡化了電路設計。凌陽spce061a單片機具有音頻輸出功能的雙通道1o位da轉(zhuǎn)換器可 以完成用戶訓練、識別等各種操作的語音提示。spce061a提供的音頻輸出方式為雙通道dac方式，在此方式下，dac1和dac2轉(zhuǎn)換輸出的模擬量電流信號分別通過aud1和aud2引腳輸出，輸入的字量分別寫入pdac1(寫)(0x7017)和pdac2(寫)(0x7016)單元。led顯示器中每個發(fā)光二極管要通過520ma電流才能達到正常亮度，而spceo61a的io口輸出電流可達到5ma，不用驅(qū)動電路即可達到正常亮度。系統(tǒng)為了滿足可靠性設計，采用晶體管構(gòu)成驅(qū)動電路。整個顯示過程中采用動態(tài)顯示，即六位顯示器逐一輪流顯示，每位持續(xù)lms或10ms循環(huán)一遍，也可以適當進行更改，但刷新速度不要小于每秒三十幀，這樣，由于視覺暫留現(xiàn)象，看到的便是六位七段led顯示器同時顯示。按鍵輸入部分共有數(shù)字鍵、密碼設定鍵、密碼顯示鍵、確認鍵和密碼清除鍵等16個按鍵，用于密碼輸入和功能按鍵的實現(xiàn)。本設計采用具有鍵喚醒功能的io的低8位ioa