LIDAR based control system development for microwave moisture measurement system

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Dudás Levente
Department of Broadband Infocommunications and Electromagnetic Theory

This document is about Gergely Szabo's Master of Science thesis which introduces a LIDAR based control system development for a microwave moisture measurement system. During the final work, only open-source softwares can be used such as the Linux Mint operating system, the KiCad for electronic circuits designing or the LaTeX for document preparation. This thesis is supported by the Budapest University of Technology and Economics (BME), Department of Broadband Infocommunications and Electromagnetic Theory's Microwave Remote Sensing Laboratory, in association with Dunakontroll Kft. The measurement system gives back the amount of water in percentage of a truck's baled paper load that the waste paper suppliers often water before. A heavier paper shipment means more money for the suppliers, thus they often cheat on that way.

First part of the thesis is about Light Detection and Ranging sensor operation theory which is followed by the developement of a LIDAR based vehicle tracking. After the operation theory, the final work contains some methods about how to monitor the positions of a truck's load. It is important to know the contour lines of a vehicle because the LIDAR sensor controls the moisture measuring antennas. If the system knows the width, the length and the height of a load, it gives back more punctual and reliable moisture values.

The second part of the thesis introduces a circuit design which suits the LIDAR sensor data to the moisture measurement system. This chapter includes wiring diagrams, printed circuit board drawing and production, then continues with the surface-mount device soldering and finally with the testing. The circuit also contains a GPS receiver, a logarithmic detector, a temperature and a humidity sensor.


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