TAILIEUCHUNG - Báo cáo " Multi-channel measurement based on DSP development "

A real-time and simultaneous processing system with 8 analog inputs is designed. The system is based on the development of Texas Instrument TMS320VC5510 DSK kit. The analog input signals are converted into digital ones by 8 bit ADC module using ADC0809. The ADC module interfaces to the DSP in parallel, through the DSP’s Memory Expansion Connector. The measurement with standard input signals fom FUNCTION GENERATOR LG1311 is also reported. | VNU Journal of Science Mathematics - Physics 26 2010 1-8 Multi-channel measurement based on DSP development Nguyen Tuan Anh Nguyen Xuan Thai1 Phung Quoc Bao2 Bach Gia Duong3 National Centre for Technological Progress 2Hanoi University of Sciences Vietnam National University 334 Nguyen Trai Thanh Xuan Hanoi Vietnam 3College of Technology Vietnam National University Hanoi 144 Xuan Thuy Cau Giay Hanoi Vietnam Received 9 February 2010 Abstract. A real-time and simultaneous processing system with 8 analog inputs is designed. The system is based on the development of Texas Instrument TMS320VC5510 DSK kit. The analog input signals are converted into digital ones by 8 bit ADC module using ADC0809. The ADC module interfaces to the DSP in parallel through the DSP s Memory Expansion Connector. The measurement with standard input signals fom FUNCTION GENERATOR LG1311 is also reported. 1. Introduction Bases on special architecture with parallel and pipe-line techniques the speed of signal processing of a DSP is manyfold faster than the speed of a specified CPU 1-3 . Because of this advantage DSP is widely used in measurement and automation where real-time processing is required. Recently Texas Instrument TMS320VC5510 DSK kit with DSP architecture is introduced in Vietnam 4 . Mostly the kit is used for audio and video studies in universities and or laboratories. These applications are normally concentrated on exploitation of the current resources supported by the DSP such as audio processing through Line In Connector. However such kind of applications is suitable to processing only one input signal 5 . Fig. 1. Inside architecture of TMS320VC5510 DSK. Corresponding author. E-mail nguyenmha@ fpt. vn 1 2 N. T. Anh et al. VNU Journal of Science Mathematics - Physics 26 2010 1-8 In practice many systems require a multi-channel signal processing. In these systems multiplexers de-multiplexers with synchronous signals and a phase lock loop are usually used. As a result these .

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