There is a need in several manufacturing process to measure weight. For this
purpose you can buy multiple types of weight cells, but the analog signals of weight cells
is rarely useable with PLCs or PCs. In this thesis I present a device which digitalize the
analog signals of the weight cells.
In the 1. Chapter I write about the project in detail. Beside that I explain what the
purpose of the project is.
In the 2. Chapter I examine the existing products on this field. This chapter
contains the examination both of the digitalizing units and the weight cells.
The 3. Chapter contains the examination and selection of the A/D converters. I
write also about the principles of the measuring.
The subject of the 4. Chapter is the hardware design. Here belongs the schematic
and the printed circuit board diagram.
The description of the embedded software takes place in the 5. Chapter.
In the 6. Chapter I describe the operational principles of the computer
applications, and I also write down the manual of the PC applications here.
In the 7. Chapter I present the test results of the prototype, ant the 8. Chapter I
mention the possible developments.