I am trying to build an IoT solution for connecting industrial machinery(250 global divisions, with each division having about a dozen machines). I plan to capture and collect critical data regarding machine run time, down time, temperature etc. to be able to do analysis and use machine learning to provide maintenance information for this machines. I have worked on a small version of IoT solution, and I am quite familiar with Raspberry Pi, Azure IoTHub etc, but how do I start here? I have read many blogs that talks about using Blockchain to connect machinery to IoT, but could not find anything as to "how" exactly that can be done.
What I am looking for here is not the exact solution, but some information/references to start with. Any help would be appreciated.