Project Expansion: BMS Remote Site Expansion Module

Role: Lead Software Consultant (KnightTech)

KnightTech was commissioned by a Kent-based power systems supplier to design and implement the complete software architecture for a specialized BMS Expansion Module. The hardware was developed to augment the client's existing primary BMS, extending its monitoring capacity to support the high-density battery arrays (50+ cells) critical for fixed-site backup systems at remote radio relay stations.

Technical Implementation & Responsibilities

• Firmware & RTOS Engineering:

  • Authored the full firmware stack using the Keil C251 Compiler, specifically optimized for the 16-bit C251 architecture to handle high-precision data acquisition.

  • Utilized the Keil RTX251 Real-Time Operating System to manage concurrent tasks, including cell voltage sampling, temperature monitoring, and impedance calculations across 50+ individual cells.

• System Integration & Logic:

  • Engineered the communication protocols required to bridge the expansion module with the central site controller.

  • Designed the software to interface seamlessly with the primary system's VxWorks and Embedded Linux environment, ensuring high-speed data synchronization and fault reporting.

  • Developed robust C++ data structures to track long-term cell degradation and state-of-health (SoH) metrics.

• Remote Site Reliability:

  • Implemented specialized noise-filtering algorithms to maintain signal integrity in high-EMI (Electromagnetic Interference) environments typical of radio transmission sites.

  • Designed fail-safe logging routines within the Keil environment to ensure no telemetry data was lost during power fluctuations or localized network outages.

Key Technical Stack

• Processors: C251 (High-performance 8051 evolution).

• Development Suite: Keil C251 Toolchain.

• Operating Systems: Keil RTX251 (Module level), VxWorks / Embedded Linux (System level).

• Languages: C, C++.

• Application: Infrastructure Backup Power, Telecommunications, Battery Health Analytics.