Title :
General Purpose Digitizer
Author :
Youle, G. ; Bennett, A.S.
Author_Institution :
Bedford Institute of Oceanography
fDate :
Sept. 28 1987-Oct. 1 1987
Abstract :
The GPD data acquisition subsystem is a high resolution, multichannel, microprocessor controlled analog to digital conversion module. The first application is to a CTD (Conductivity, Temperature, Depth instrument), using conventional sensors. The GPD allows a great simplification of the analog circuitry. For example, functions such as phase sensitive detection can now be performed digitally. The combination of multiple sampling and digital signal processing, while not improving accuracy, can produce results which have a higher overall resolution than that which would be obtained by a more conventional acquisition system.
Keywords :
Bridge circuits; Digital filters; Filtering; Frequency; Low pass filters; Noise level; Noise reduction; Temperature sensors; Thermal conductivity; Thermal resistance;
Conference_Titel :
OCEANS '87
Conference_Location :
Halifax, NS, Canada
DOI :
10.1109/OCEANS.1987.1160911