A humidity sensor produces a 0 to 1 volt output, representing 0 to 100% RH. Its imprecision is 2%. The signal if input to a binary ADC that has an input range of 0 to 1 V. How many bits are required to make the quantization less than or equal to the imprecision. When the RH = 25%, what is the digital output?
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A humidity sensor produces a 0 to 1 volt output, representing 0 to 100% RH. Its...
You have a sensor that has a maximum output of 25 Volt, and you want to feed this signal intoa data acquisition (DAQ) board with a maximum input in the range 0, +101 Volt. Design a circuit that matches the sensor to your DAQ board with the following design criteria: a) You need to attenuate the input signal by a factor of 2.5 b) The sensor cannot provide any current; therefore you need to make sure not to cause a...
Problem 1: Signal conditioning and ADC Given the measurement of voltage sensor in the first 20 ms that involving a several noises causes a drift in measurement. The measurement signal fluctuates with time as a sine wave [sin(wt), ω in rad/s, t in ms] which can be approximately divided into four sections as in the following table Section I Section II on III 9St<13.2 Section IV Time (ms)OSt<5.5 Signal (volt) V-0.5+0.1 5.5 St<9 13.2 Sts20.5 V-0.6+0.1 V-0.55+0.1 V-0.65+0.1 sin(3.41x 103t)...
10- (15 pts) The data-sheet of a force sensor indicates that: at F O N the sensor output is 1 V F 100 N the sonsor output is 4 v Assume that the sensor is linear in this range of forces. a. Find the sensor sensitivity b. Design the signal conditioning circuit (SCC) such that at F-O N the SSC output i OV and at F = 100 N the SSCoutput is S. Calculate all circuit param the SCC. eters...
3. With the aid of a diagram, briefly explain th ing principle of a Successive a) Approximation Analog-to-Digital Converter (ADC) b) An ADC has to be designed to convert voltages in the range from -5 V to +5 V, with a resolution below (better than) 1 mV. What is the minimum number of bits required to meet this design specification? An ADC has to be designed to convert input voltage signals with frequency c) components less than or equal o...
Oil estion 2 (9%) The voltage output from a J-type thermocouple referenced 0°C is to be used to measure temperatures from 50 to 70°C. The output voltages vary linearly over this range from 2.585 to 3.649 mV 1. If the thermocouple voltage is input to a 12-bit A/D converter having a +5V range, estimate the percent quantization error in the digital value; 2. If the analog signal can be first passed through an amplifier circuit, compute the amplifier gain required...
1. An A/D converter will convert voltages over a 0 to 10 V range. How many bits must it be to achieve a 1 mV resolution over the entire range? 2. You have an A/D converter that will convert over a range of 0 to 5 V. You input an analog signal to it that has a range of 1 to 3.5 V. What must be the number of bits of the converter to achieve a resolution of 1% of...
When designing an Analog to Digital System all of the range values for the system must be defined from input to output. This input will be used to drive a 3. PWM output signal to operate an LED. Assume the PWM is calibrated to read minimum to maximum based on the binary input range given. Potentiometer - 10 KS2 (0 degrees to 180 degrees) VDC for Potentiometer 12 V Analog Converter Module 10 bit, Vref 8 V PWM Module-8 bit,...
A temperature sensor based WSN node provides an output of 10 mV to 210 mV over its operating range. Develop a signal conditioning circuit so that the output becomes 0 V to 3.3 V for the operating range. The circuit should offer very high input impedance.
Block diagram of a real time signal processing system is shown in Figure 1. Assuming that the system operates in audio frequency band (0 to 20 KHz) and uses bipolar, analog to digital converter (ADC) with peak to peak input voltage range= 10 Volt is used, estimate: i. The quantization step size; (2 Marks) ii. The minimum stop band attenuation in dB, Amin, for the anti-aliasing filter; (4 Marks) iii. Sketch the frequency response of the antialiasing filter; iv. The...
A vibration sensor is used to measure the vibrations caused by a car engine. It is mounted into a Wheatstone bridge as shown in Figure 3. The vibration sensor has a reference resistance of 100 12 and has a resistance versus amplitude sensitivity of 0.1 2/(P-P amplitude). (P-P stands for peak to peak). The designer chose to use R4 as the vibration sensor and used 100 12 resistors for R1, R2 and R3. The input voltage (Vi) was chosen to...