UZAY

Interface Electronics

PIU

(Payload Interface Unit)

PIU is a reliable interface unit that can be adapted to different satellite platforms (e.g. micro satellite). Thanks to its smart unit, cost-effective material diversity, and modular unit structure, it can meet various digital and analog interface needs.

PIU provides the following features to the satellite flight segment:

  • Smart unit and peripheral components for payload software
  • TM-TC services and interfaces for imaging and scientific payloads
  • Controlling and monitoring of payloads via CAN, RS-422/RS-485, Spacewire and LVDS data buses.
  • Failure tolerant architecture based on redundancy and hardware protection
satellite management equipment img 1

GAYE Features

Key Features

  • MPF500T Based Polarfire FPGA
  • Powerful, High Reliable RISC-V Based Microprocessor
  • 4 MB SRAM/MRAM, 4 GB SDRAM, 32 GB NAND Flash

Hardware FDIR Features

  • Over Current Protected Secondary Power Switch
  • Auto Reset Functionality for Power Switch after Current Protection
  • Soft Start Feature
  • Internal Temperature Monitoring
  • Internal Current and Voltage Monitoring
  • Redundant Internal Databus

Budget

Supply 28V nominal (15V to 50V input voltage range)
Power: 30W (nominal)
Dimension: mm x mm x mm (Width x Length x Height)
Weight: kg

Interfaces

2 CAN
14 RS-422/RS-485
2 x Spacewire
Xbant: Dual Channel LVDS
Test: 1 JTAG

Heritage / Platforms

AYAP-1

Environments / Reliability

Thermal:-20 to +50 C
Vibration
Shock
EMI/EMC: MIL-STD-461
Lifetime: min. 1 year
SEU tolerant
Latchup Immune

TMIE

(Temperature Monitors Interface Equipment)

TMIE can measure the satellite temperatures and another analog signals with high reliable design.

TMIE provides the following functions:

  • Configurable with hot redundant and cold redundant version.
  • FPGA resources for the flight mission software
  • Discrete monitoring interfaces compatible with ECSS-E-ST-50-14C
  • Failure tolerant architecture based on redundancy and hardware protection
  • Max 366 thermistor measurement.
saye img 2

TMIE Features

Key Features

  • High Reliable radiation tolerant FPGA design
  • MIL-STD-1553 and CAN communication
  • Opening and closing with telecommand
  • Temperature measurement of 183 points
  • Work with PTC and NTC thermistor
  • Aeroglaze surface coating
  • -20°C to +50°C operational temperature

Budget

Supply: 100V (GEO) - 80V/120V (Input Voltage Range)
28V (LEO) - 15V - 50V (Input Voltage Range)
Power: 7.5W - 14W (nominal)
Size: 310 mm x 220 mm x 260 mm (W x L x H)
Data Bus : 2 x 2 MIL-STD-1553 (Redundant system), 2 x 2 CAN (*CAN communication has been added in AAP-1 satellite - Redundant system)
Weight: 8.3 kg
EMI/EMC: MIL-STD-461
Lifetime: 5 to 15 years
SEU tolerant
Latchup Immune

Heritage / Platforms

TURKSAT 6A, AYAP-1

REIU

(Reaction Wheel Interface Unit)

The Reaction Wheel Interface Unit is the equipment that provide communication between the reaction wheels and the Satellite Management Unit.

ttab img 2

REIU Features

Key Features

  • MIL-1553B communication standard for system communication.
  • FPGA used as the smart unit.
  • FPGA using provides high level features in terms of reiability, radiation tolerance and time certainty
  • Start command of equipment is HPC (High Power Command)
  • Redundant unit is available for hot/cold redundancy

Interfaces

4 x 12-bit DAC(0v-10v)
8 x TSM1
4 x LPC
4 x ASM
8 x BSM/BDM
2 x MIL-1553B
2 x HPC receiver

Budget

Supply: 100V
Weight : 3.6 kg
Power: 7W (max) - 6W (min)
Dimensions : 288 mm x 220 mm x 94.6mm (W x L x H)

Heritage / Platforms

TÜRKSAT 6A

Environments / Reliability

Thermal:-20 to +50 C
Vibration
Shock
EMI/EMC: MIL-STD-461
Lifetime: 5 to 15 years
SEU tolerant
Latchup Immune

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