Integrating a BCL-AMP capacitive sensor to LinuxCNC

I am a technical technician for Laser machines and we have tested some samples of sensors
Schematic of the sensor
 

 

I could not load the photos on the site.
The measurement of friends is completely correct and finally if you can convert the frequency to analog voltage it will probably be easier to control
The main problem in using this sensor is not reading the output, but keeping the distance constant.
 

Hello Masi,
Have you already created a cicruit or device to convert the frequency signal to 0-10V or 4-20mA converter? This would make it a lot easier to control the height.

Why would you not read the frequency directly,
as that would be faster and more accurate?

This is what I am doing (reading the frequency directly) and it works very well.

Hello everyone!
shasse You Are The Best ! Good Job !

   

I am currently designing an advanced capacitive sensor.
I'm developing it for my own needs (for my controllers), but I've received numerous inquiries from people using Linux CNC about whether it could be applied there.

Unfortunately, I have no experience with LinuxCNC, but I don't think there should be any problem in using it for this purpose.
I'm at a stage where I can still make changes and improvements if needed.Initial tests have been outstanding, with a response time of less than 2ms.
The 0-10V output signal can be proportional to the calibrated capacitance or directly related to the measured distance (e.g., 0-10mm or 0-5mm).

   
Can be use like standard THC for PLASMA  
If anyone here is knowledgeable about this and would like to use it with LinuxCNC, I'd be happy to collaborate (Beta Tester).

The condition for collaboration is an open thread on a forum with honest opinions, including updates on progress (or failures and setbacks).
I am open to criticism.

  youtube.com/shorts/YGHq2CSY5f4

I'd be willing to test this out and provide some data. I currently use the BCL-AMP setup with QTPlasmac and while it works, it could definitely be faster in its tracking. The sensor outputs the nonlinear signal which is also noisy. After filtering (hardware and software), it works, however I feel as though it is not sensitive enough now due to being averaged and filtered so much that any abrupt changes in height will cause the nozzle to touch.

A cleaner, linear response signal could be the ticket, as I have fiddled with the PID parameters quite a bit as well as my Z axis velocities and accelerations and it is still not really where I'd like it to be.

Let me know how I can be of help.

Uthayne is your man. He is very knowledgeable in this area.

Uthayne wrote:

Let me know how I can be of help.

 

Hello, thank you for your willingness to help.
As I mentioned, I’m not proficient in LinuxCNC, but I have great respect for it.I’d like you to let me know what you need, and I’ll do my best to adapt the product to your requirements and send it to you for testing. I think we should start a new thread to avoid cluttering the current one.I’m very committed to keeping the topic open and accessible to everyone without any secrets.Criticism, in particular, has always been, is, and will continue to be motivating for me.

ps. to introduce myself I present my child:
My Proma-Elektronika company

A cleaner, linear response signal could be the ticket, as I have fiddled with the PID parameters quite a bit as well as my Z axis velocities and accelerations and it is still not really where I'd like it to be.

Have you considered linearizing the output (with lincurve) before feeding the linearized distance to the
PID loop?