Rekaan Dan Pembangunan Penderia Kadar Aliran
This project is being done to design and develop a system that can measure the flow rate of water inside a PVC pipe, 40mm in diameter. As a module the system was design and developed using a bilge pump design. For the microcontroller unit the system used a PIC16F877 chip. A propeller has been...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2006
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| Online Access: | http://eprints.usm.my/58838/1/Rekaan%20Dan%20Pembangunan%20Penderia%20Kadar%20Aliran_Mohd%20Hamadi%20Shahid.pdf |
| Summary: | This project is being done to design and develop a system that can measure the
flow rate of water inside a PVC pipe, 40mm in diameter. As a module the system was
design and developed using a bilge pump design. For the microcontroller unit the
system used a PIC16F877 chip. A propeller has been design as the tactile sensor for the
system. The propeller will turn as water flows into the pipe. A microcontroller is used to
count the revolutions of the propeller which is linear to the water flow rate in the pipe.
For the purpose of counting the revolutions of the propeller an encoder circuit had been
design. The circuit consists of an infra-red receiver and transmitter that is separated by a
spinning slot. The encoder circuit will transmit series of low and high voltages which
act as the input of the microcontroller. The microcontroller will then count the low
voltage and divide it over the time it receive the signals. In the encoder circuit there are
also a comparator and an amplifier circuit. These circuits’ purposes are to reduce the
ripple and noise effect while increasing the voltage gain of the receiver signal. This is
essential because the infra-red voltage signals are small and undetectable for the
microcontroller. Lastly the output of the flow rate will be display in a LCD. The output
will be in meter over second (m/s) example 0.24 m/s. |
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