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Image and voice signal acquisition technology research

Author: WangHuaQiao
Tutor: MaTieHua；YouWenBin
School: University of North
Course: Electronic information technology and instruments
Keywords: Embedded Systems Image Voice of the collection AD conversion Driven Development Windows CE
CLC: TP274.2
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 0
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Abstract


The embedded system applications with image and voice signal acquisition technology, facilitates the acquisition and control , signal processing and transmission functions transferred to the external module COMS image acquisition unit being . This approach not only greatly simplifies the development platform and the communication between the image acquisition device commands , reducing the development effort , but also on a larger system functions expansion. This paper aims to explore ARM-based embedded development platform in the image voice signal acquisition and feasibility of the application program , combined with the collection of environmental parameters , making this project with technical advances and features innovative features. Characteristics for voice capture images , the subject offered to ZC0301P USB control chip as the core of the image acquisition unit and the formation of the overall design of embedded systems . Combined with environmental parameters acquisition function , on the basis of the program involved the collection system control, data acquisition , processing, transmission , and storage and other issues in detail. But also on ARM-based embedded systems and Windows CE platform development technology process has been discussed in some detail . In terms of hardware , system analyzes the characteristics of the ARM architecture , and proposed development platform selection basis . In terms of software , for Windows CE operating system introduced based on the operating characteristics of the Windows CE operating system application development process , completed applications for the operating system migration issues , collecting application development , image acquisition device driver debugging work. Voice and image acquisition, development platform for research use AD converter for recording environmental parameters object commence recording possibilities , and AD device drivers to write, debug , and application interface design . The subject achieved QVGA resolution frame rate of 5 ~ 25fps video , real-time display and storage and playback , combined with high-speed AD converter to achieve a 4-channel 1MHz, 8bit resolution of the external environment parameter collection . More work to complete the verification of the system based on ARM and Windows CE embedded platforms on the feasibility of the application of this topic , the entire image acquisition system can be realized in addition to the voice signal acquisition, real-time display, transfer, storage and other basic functions, but also synchronized multi-channel external environment parameters of the acquisition .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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