Implement research on multi-channel sampling and level drifting for ultra sound phase array

Author

Chen, Po-Yuan ; Chen, Chih-Wei ; Chen, Fu-Kun ; Wu, Hsien-Tsai

Author_Institution

Dept. of Electron. Eng., Southern Taiwan Univ. of Technol., China

Volume

1

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

370

Abstract

The proposed ultra sound phase array system experimental testbed, including a self-developed multi-channel acquisition card, which samples and holds eight-channel analog signals using two ADCs simultaneously for phase array signal processing. The problem of the voltage level drifting occurring between four in-phase and quadrature receivers is addressed. A multi-channel acquisition card is solved and the validity of the system is verified on the basis of the data actually retrieved by this card.

Keywords

data acquisition; signal sampling; ultrasonic transducer arrays; eight-channel analog signals; in-phase receivers; level drifting; multi-channel acquisition card; multi-channel sampling; phase array signal processing; quadrature receivers; self-developed multi-channel acquisition card; ultra sound phase array; voltage level drifting; Acoustic signal processing; Acoustic testing; Array signal processing; Automatic testing; Phased arrays; Sampling methods; Signal processing; Signal sampling; System testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1181067

Filename

1181067