Instrument Control Unit (ICU)

Instrument thermal control & Payload data processor in single sub-system

KEY FEATURES
Radiation-tolerant components and TID monitoring.
Integrated FPGA co-processing capabilities.
Autonomous thermal management.
Dedicated power distribution and monitoring circuits.
Fault detection, isolation, and recovery (FDIR) capabilities.
Redundant communication interfaces ensuring reliable data transfer.

FUNCTIONS
Real-time data acquisition and processing from sensors, including temperature and radiation sensors.
Autonomous heater control loops based on configurable temperature set points and profiles.
Robust power management and latch-up protection.
Secure firmware updates, remote image management, and rollback mechanisms.
High-precision timing synchronization through onboard RTC.
Housekeeping data collection, logging, and telemetry reporting.
FPGA-based custom computational offloading and acceleration.

INTERFACES & DATA COMMUNICATION
SpaceWire Interfaces: Main and redundant backup interfaces for reliable communication with the OMA subsystem. Main and Redundant communication with the PLHU platform. Main and redundant interfaces for auxiliary camera.
CAN Bus Interfaces: Telemetry and telecommand communication with the PLHU subsystem. Additional redundant CAN interfaces for mission expansion and fault tolerance.
RS422 Interfaces: Multiple RS422 communication channels provided for robust data transfer, subsystem interfacing, and debugging purposes.
Ethernet Interface: Ethernet port dedicated to debugging, software developments, and system diagnostics.
Sensor Interfaces: Integrated radiation-tolerant ADC channels for temperature sensor readings and radiation monitoring.
Heater Control Interfaces: PWM-controlled heater channels with built-in short-circuit and fault detection mechanisms.
Power Interfaces: Dedicated regulated 12V DC power line for the OMA subsystem. Monitored and controlled power rails with independent latch-up protection.