Project: September 2019 – October 2019 (2 months)
Description
The fan controllers are networked via RS-485 bus in a hierarchical, multi-level topology. A specific 9-bit protocol (with one wake-up bit) is used. A gateway unit connects the system to the control system via an RS-232 interface. Some systems have been in operation for more than 20 years. Replacement devices for the gateway units are no longer available. The aim of the project was to re-implement the used serial protocols on an evaluation board with a current (ARM-based) microcontroller.
Summary
| Project | Gateway Unit for Filter Fan Unit Systems |
| Duration | September 2019 – October 2019 (2 months) |
| Customer | confidential due to nondisclosure agreement |
| Industry Sector | Clean Room Technology |
| Role / Responsibility | Software Design, Implementation, Function Tests, Documentation, Order Processing |
| Software / Tools / Methods | Keil uVision 5 (ARM-MDK), Enterprise Architect (Sparx), Git (Distributed Version Control System) |
| Hardware Environment | STM32F072 (ARM Cortex-M0), Rigol Oscilloscope, Multimeter |