Question: A Cal Poly Pomona Mechanical Engineering student mounts an accelerometer having a sensitivity of ( 2 . 8 mathrm { mV } /
A Cal Poly Pomona Mechanical Engineering student mounts an accelerometer having a sensitivity of mathrmmVmathrmg to one of Cal Poly's MiniBaja front end struts. He has built a data acquisition system DAS using an operational amplifier, a passive lowpass RC filter, and an mathrmAmathrmD converter having bits and a fullscale excitation of Volts. He is sampling the data at a rate of Hz On the memory of his DAS, the binary value of corresponds to the magnitude of the voltage measured by the accelerometer. Unfortunately, his filter attenuates the signal by dB If the OpAmp gain is set at determineaddress the following:
a Neatly and accurately sketch a blockflow diagram of the DAS showing all major elements as described above
b Compute the voltage at each stage in the DAS and clearly label the diagram of part a with these computed voltage values
c Roughly, how many gs does the value of at the data acquisition board correspond to
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