Case study · Industrial gas detection
M-Controller
A scalable digital-and-analog control platform for centralized gas monitoring, alarm processing, relay control, and integration with building automation systems.

Overview
A flexible control center for distributed gas detection.
The M-Controller brings remote gas transmitters, analog sensors, alarms, and control outputs into one programmable system. Its architecture supports installations ranging from mechanical rooms and parking structures to refrigeration plants and industrial facilities.
The controller can display gas readings, evaluate alarm conditions, activate local or remote relays, operate horn and strobe outputs, and make system information available to external automation platforms.
Engineering contribution
Product architecture, embedded control, and long-term evolution.
This project represents work performed as part of my engineering responsibilities at QEL. My portfolio description focuses on publicly documented product capabilities and high-level engineering contributions rather than confidential design details.
System architecture
Integration of distributed sensors, controller logic, relay expansion, annunciation, and supervisory communications.
Embedded firmware
Real-time data acquisition, alarm evaluation, output control, configuration, diagnostics, and field behavior.
Communications
RS-485 sensor networking, Modbus and BACnet integration, configuration interfaces, and coordination with remote modules.
Product lifecycle
Enhancements, manufacturing support, field troubleshooting, compatibility, and continued platform development.
Applications
Designed for real-world safety systems.
Public product references
Technical figures on this page are based on public QEL product information. Product names, trademarks, documents, and commercial specifications belong to their respective owners.
View the public QEL controller page ↗