# mt - Name Real Time Computing Systems EE 4770 Midterm...

This preview shows pages 1–4. Sign up to view the full content.

Name Real Time Computing Systems EE 4770 Midterm Examination 17 March 1999, 8:40-9:30 CST (Real Time Computing Systems Midterm Examination) Alias Problem 1 (50 pts) Problem 2 (50 pts) Exam Total (100 pts) Good Luck!

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 1: The partially designed circuit below is to be used to convert temperature x [ - 20 C , 40 C] to a ﬂoating-point number H ( x )= x/ K to be written into variable temp . The circuit uses an RTD, its model function is H t1 ( x )= R 0 (1+ α 1 x ), where R 0 = 100 Ω and α 1 =0 . 00398 / C. The RTD is connected to a - 7V source as shown. The ADC response is H ADC(10V , 16b) . + - v 1 v 2 R 2 R 3 -7 V ADC B I RTD ( a ) Complete the design (choose values for v 2 , R 2 and R 3 ), so that the ADC input is in [0 . 5V , 9 . 5V] over the range of temperatures to be measured. (20 pts)(For reduced credit [ < 20 pts] make full use of the ADC dynamic range.) 2
( b ) Write the interface routine. (20 pts) double v1 = -7.0; /* Volts */ double v2 = /* No need to copy in values from previous page. */ double R2 =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 11/28/2011 for the course EE 4770 taught by Professor Staff during the Fall '99 term at LSU.

### Page1 / 5

mt - Name Real Time Computing Systems EE 4770 Midterm...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online