Category: Plasma & Laser
I converted the bcl-amp output to a differential signal (max485), at a long length it works much more stably and reliably. You should do the same (I understand that your frequency is linear and depends only on the height). A couple more questions, your sensor have temperature stabilization?
I was thinking about differential signals and if there is such a need I will introduce them, we will see after the tests. There was only one obstacle - I wanted to leave the size of the device exactly like most BCL type sensors so that it would fit perfectly in the place designated for it. I did not find a suitable connector convenient to use to accommodate so many cables. I thought about RJ45 but it gave rise to other problems.
Fortunately, such a converter is not a problem and it can be added even externally along with galvanic separation, which is missing here.
Of course the temperature stabilization is needed - now introduced very basic and weak, it requires refinement. This still requires a lot of time. I have to collect a lot of measurement data and refine the algorithm but I am prepared for it. The current implementation should be completely sufficient for tests. There are other sensors apart from temperature that are more difficult to control and that spoil the measurement during cutting (dielectric parameters of the gas surrounding the nozzle).
