Improvement on Ultrasonic Level Detector For Solid and Liquid Applications

This report describes the design for a small scale of Ultrasonic Level Detector (ULD).
The main parts of the ULD are Ultrasonic Transmitter and Receiver, Level Processor,
Serial Communicator and Visual Basic 6.0 software. A microcontroller; PIC16F877 and
PIC16F84A are used for the data processing and serial communication. All the circuits
used for ULD and the source codes are included in this thesis. Some experiments are
carried out in order to verify the design. Further improvements are suggested for future
works.