I think you can use the microchip Technology MCP73xx charge management controller.

System on CHIP or microchip technology has builtin function, try those , there is a possibility in the filed of  MEMS, however its fabrication is time consuming process, or if you can check RF MEMS in market for harvesting purposes 

Thank you for the answers, actually I am looking for a proposed circuit which I can edit it to validate and change its function.. not commercial circuit.

Try these application notes:

http://ww1.microchip.com/downloads/en/DeviceDoc/30009610F.pdf

There are lots of circuits and suggestions.

Regards

Paul

Thank you Dr. Paul,

I will take a look into the file.