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附录 3:Voice of Electronic Password-lock DesignAbstract: 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 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; FLASH1 IntroductionAs 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 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 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 display 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 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 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, it is possible errors, but through a number of training can make comparison and identification of voice greatly improved3 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 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, 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 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 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 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 features 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 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 circuit 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 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, 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. 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, 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 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 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. 3.5 FLASH expansion of external circuit 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 broadcast voice. SPR4096 in use, the use of SPR4096 ResWriter to read and write operation, used to store the speakers personality parameters reference template. 3.6 the lock and lift activationSCM SPCE061A complete identification and display, the drive to realize the implementation of the electromagnetic lock function, and to 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 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 receive 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 receive 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 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 electromagnetic coil currents too large burning coil. Current Monitor by MAXIM companys 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 characteristics. 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.4 system software designSPCE061A the development of online debugger PROBE To achieve. It uses a built-in online SPCE061 Circuit Simulation ICE (In-Circuit Emulator) and Sunpluss 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-down menu, shortcuts and quick access to the list can be ordered so that the users 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 debugger. 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 keys, the implementation of the corresponding procedures, to complete Password changes settings, contrast, shows, and other functions.5 ConclusionThe system uses a SPCE061A 16-bit microcontrollers embedded voice processing and control system, easy to use, easy to use, but the speech recognition 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 development and, ultimately, achieving efficiency, safety And reliable Voiceprint control of the voice of electronic locks.
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