Title :
Dynamic of non-uniform A/D conversion
Author_Institution :
Fac. of Electr. Eng., Ljubljana Univ., Slovenia
Abstract :
Numerical value of measured quantity in technical system has uncertainty value-band depending on the dynamic behaviour of measured object and measurement instrumentation with the comparison references and logical structures. The estimation of difference between two levels is possible with at least two sampling pulses and the dynamic error is proportional to that difference with addition of some constant. The finite impulse response of sampling device, which is not infinitely short, caused finite information capacity of the measurement channel. With the adaptive property of proposal method that every, previous approximation step to signal becomes the center of observation with the exponential increasing resolution in new step is possible to short the time of conversion. The conversion time can be shortened to one third in comparison with the best parallel-serial A/D conversions.
Keywords :
"Pulse measurements","Sampling methods","Quantization","Signal sampling","Current measurement","Shape measurement","Pulse shaping methods","Frequency measurement","Signal resolution","Interference"
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.776107