Fluid Flow Measurement
System
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Fluid Flow Measurement System-Microcontroller and Assembly Language-Project Presentation, Slides of Microcontrollers
This is project presentation related to Microcontroller and Assembly Language course. It includes Fluid, Flow, Measurement, System, Microcontroller, Meter, Sensing, Devices, Constraints, Schematic
Typology: Slides
2011/2012
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Fluid Flow Measurement
System
Main Task
To design and build a flow measurement system using the 8051 microcontroller as a semester project.
To count the number of pulses received after using the IR transmitter/receiver through the 8051 microcontroller.
To make communication with the serial port possible.
Flow Meter
A flow meter is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a liquid or a gas.
The sensing mechanism is used to detect the rise and fall of the flow rates, and gives its output accordingly.
Constraints on the choice of
sensors
Extremely high price of the pressure and the electromagnetic sensors
The lack of availability of these sensors in the local market
The relatively long delivery time of such sensing devices
Our Sensor Board
Based on the principle of infrared transmission/ reception
A small disk/wheel is used to model the obstruction to fluid flow.
The number of pulses generated is directly proportional to the rate of fluid flow.
Problems Encountered
The sensing mechanism mentioned above suffered from the problem of noise.
The additive noise corrupted the counting operation, because a pulse is counted several times before the next transition.
Use of Schmitt Trigger
In this case a noisy input is less likely to cause multiple triggering.
We set the threshold values of our Schmitt trigger to be equal to + volts and +5 volts.
The IC used for the Schmitt trigger is 74LS14.
Results:
Achieved the objectives to a certain extent
Designed a basic layout structure of a flow meter, and were able to count the number of pulses analogous to the fluid flow effectively
Serial communication was successfully done
Recommendations for future
work
The availability of better sensing mechanism can help improve the project.
Viscous fluids other than water can be taken into account
The mechanical design of the basic model can be made.