(Solved):
1. A full bridge strain gauge circuit is shown in Figure 1 for the load cell of Figure 2. The lo ...
1. A full bridge strain gauge circuit is shown in Figure 1 for the load cell of Figure 2. The load cell will experience a strain from 0 to 2,500 microns. Given that all the gauges are identical with nominal resistance of 120? and gauge factor of 2 . a. Determine the bridge output voltage range for the given strain range. b. Draw a block diagram for the measurement system c. Design a signal conditioning circuit that will produce 0?2.50V over the range. 2. Compare and contrast the performance of the following ADCs in terms of cost, resolution and speed: a. Flash b. Sigma-Delta c. Pipeline d. Successive approximation
3. Signal form a piezoelectric vibration sensor is to be store in memory for later analysis. The maximum frequency component in the signal is 7kHz. Would a sample frequency of 12kHz pose any challenge to the quality of the stored data? Give a reason for your answer. 4. Calculate the required bit size of an ADC that will provide a resolution of 0.01% of span. 5. Select suitable values for the resistors in the circuit shown in Figure 3 to provide an output of 5.00V when the load current is at 20A given that Rsense ? is 0.01?. Figure 3 6. Draw a detailed block diagram to represent a 3-channel RTD temperature data logger. 7. As it relates to ADCs give a basic definition for the terms: Quantization, Sample Rate, Aliasing and Quantization Error. 8. The diagram of figure 4 consist of a filter and an op-amp amplifier. Deternine the filter cut-off frequency and the gain of the amplifier. Figure 4