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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.2//EN"><!--Converted with LaTeX2HTML 96.1 (Feb 5, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><HTML><HEAD><TITLE>2.3 Data Acquisition </TITLE><META NAME="description" CONTENT="2.3 Data Acquisition "><META NAME="keywords" CONTENT="sensors"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><LINK REL=STYLESHEET HREF="sensors.css" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/sensors.css"></HEAD><BODY BGCOLOR="#FFFFFF" TEXT="#000000" LANG="EN"> <A NAME="tex2html128" HREF="node6.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node6.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="next_motif.gif" tppabs="http://ccrma.stanford.edu/Images//next_motif.gif"></A> <A NAME="tex2html126" HREF="node2.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node2.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="up_motif.gif" tppabs="http://ccrma.stanford.edu/Images//up_motif.gif"></A> <A NAME="tex2html122" HREF="node4.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node4.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif" tppabs="http://ccrma.stanford.edu/Images//previous_motif.gif"></A> <BR><B> Next:</B> <A NAME="tex2html129" HREF="node6.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node6.html">3 Sensors </A><B>Up:</B> <A NAME="tex2html127" HREF="node2.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node2.html">2 General Overview </A><B> Previous:</B> <A NAME="tex2html123" HREF="node4.html" tppabs="http://ccrma.stanford.edu/CCRMA/Courses/252/sensors/node4.html">2.2 Signal Conditioning </A><BR> <P><H2><A NAME="SECTION00023000000000000000">2.3 Data Acquisition </A></H2><P>The analog and continuous time signals measured by the sensor and modified by the signal conditioning circuitry must converted into the form a computer can understand. This is what is referred to here as data acquisition. It should be clearly understood that this step is only necessary when interfacing human gestures
to a digital computer. If, for example, one wanted to use the direction of eye gaze to control a wheelchair, no data acquisition would be needed. The continuous analog voltages could be directly used to control the analog steering mechanism.<P>Section 5, however, deals specifically with the sampling and quantization techniques for using the information from the user to control a digital computer. The effects of such a process on the waveform received from the
signal conditioning circuitry must be clearly understood in order to design the best possible computer controller for the given application.<P><BR> <HR><P><ADDRESS><I>Tim Stilson <BR>Thu Oct 17 16:32:33 PDT 1996</I></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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