Covert analog signal into digital signal, Electrical Engineering

Assignment Help:

Covert Analog Signal into Digital Signal

A strain gauge is used in Wheatstone Bridge configuration. The output from the Wheatstone Bridge varies from zero to a maximum strain output of 12V, that is it is in the positive quadrant.

You are required to convert this 0 -12 V analog signal into a 12 bit digital signal (Analog to Digital Conversion, ADC). The maximum  frequency of the analog signal is 20 KHz (this governs the Nyquist sampling rate).

1. The relationship between the analog value of the digital signal and the input analog signal is such that it obeys the square law. The functional relationship is exhibited by the digital step having a greater sensitivity at the low voltage levels than at the higher voltage level (the analog equivalent of the digital step is smaller at the lower voltage levels than at the higher voltage levels).

2. The resultant digital signal is also converted to the Gray code in that only one bit is to change for each quantisation level change.

3. The output of the ADC or the Gray code equivalent is used to illuminate three lights using combinational logic to give

Green > 1/2 Vmax (stays on while the voltage is exceeded)

Amber > 3/4 Vmax (stays on while the voltage is exceeded)

Red     >7/8 Vmax (stays on while the voltage is exceeded)

4. The Digital signal is converted back to an analog signal but each digital bit step increase has the same analog magnitude change, the digital signal is considered a linear function of voltage.

Each component (bullet point above) of the total design is to be simulated using:

NI circuit design suite (Student edition or Academic edition)

National Instruments

 


Related Discussions:- Covert analog signal into digital signal

Determine the motor speed at a specific line current, Q. A dc series motor ...

Q. A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15  and its series-field resistance is 0.1 . As

Derive the solution of the characteristic equation, For a vehicle suspensio...

For a vehicle suspension, a basic two-degree-of-freedom "quarter-car" model would be slightly more complicated than the spring-mass-damper system I chose to study in Figure 1. The

Which are the three basic configurations of fet amplifier, Q. Which are the...

Q. Which are the three basic configurations of FET amplifiers? The three basic configurations of FET amplifiers are · Common source(CS)- It is most frequently used as it pro

Evaluate the quiescent point of the circuit, Question: a). For the circ...

Question: a). For the circuit shown in figure state which operation is performed and draw the output waveform if measured between points A and B. The input signal is given in f

Mesh analysis, i am battling with mesh, node anaalysis, superposition, node...

i am battling with mesh, node anaalysis, superposition, node thevenin and norton equivalents

Connection of shunt capacitors at distribution transformer, Connection of ...

Connection of Shunt Capacitors at  Distribution Transformer Provision of capacitors at load point is found to be hard in practice because of the additional investments needed.

Discuss the essentials of an oscillator, Q. Discuss the essentials of an os...

Q. Discuss the essentials of an oscillator? The essential components of an oscillator are (i) Tank Circuit: It consists of inductance coil(L) connected in parallel with ca

What are the constructional features of dc machines, Q. What are the Constr...

Q. What are the Constructional Features of DC Machines? Adc generator ormotormay have asmany as four fieldwindings, depending on the type and size of the machine and the kind o

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd