If I can get all the requirements I can look for existing solutions. (piezo sensors are mostly used for this purpose)
If not I can design a new board specifically for your needs and we can add on more features to it.
I can generate BOM, Schematic and Gerber files for manufacturing.
If you are not aiming mass production, I can assemble the components by my own which will avoid you spending a lot of money of the board assembly.
Just for your information, I am a hardware engineer, I have a full time job as a Hardware designer for the automotive industry (in Germany).. so I am not looking to make money (i am already making it :D) I am more looking to help the community and gain more experience outside the automotive field !
Please let me know if you are interested.