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Design Services

Schematics Development for Analog, Power and Digital Circuits with component count from as low as 50 to 3000.

Microthrusters- Modelled
10 Pin Solar Array

Embedded platform development involves creating software and firmware for embedded systems, specialized computer systems designed to perform specific functions, typically within larger systems. This development is distinguished by its use of specialized tools, such as integrated development environments (IDEs) and debuggers designed explicitly for hardware platforms like ARM Cortex and AVR. These tools are crucial as they help write, test, and optimize code that is highly dependent on hardware specifics. The complexity in embedded platform development often arises from the need to interface directly with hardware at a low-level driver. PASF can manage various hardware interfaces, such as serial ports, PWM, SPI, I2C buses, ADCs, and DAC, which require precise control and timing. Moreover, the code itself is complex, typically involving tight resource constraints and the need to optimize for performance and power efficiency. It must also handle asynchronous events and maintain robust operation under various system states, often leading to complex state machine designs and concurrency management with potential issues such as race conditions and deadlocks.

Configuring STM32H755 Device

Absolute Pressure Transducer (1.2 bar A)

The unit consists of a suitable transducer and signal conditioning electronics. This converts a pressure input into a proportional DC voltage output. The unit is energized by 28 Vdc (16-32 Vdc) supply. The sensor output is 0.25V – 5 Vdc corresponding to 0 – 1200 mbar Absolute input pressure range. It’s function is to sense the air pressure inside the cabin of an aircraft.
Transducer specification is as below:

  1. Temperature range: -55 °C to +80 °C
  2. Acceleration : -3.5 to 10 g
  3. Altitude : Up to 18 km above sea level
  4. Characteristics : Linearly varying output from 0.25 Vdc (at 0 mbar A) to 5Vdc (at 1200 mbar A)
  5. Sensor Supply : 28 Vdc (16-32 Vdc)
  6. Sensor Range : 0 to 1200mbar (Absolute)
  7. Sensor accuracy : ±1% of FSR ( 0 °C to +50 °C), ±1.5% of FSR( -25°C to 0 °C and +50°C to +80 °C)
  8. Proof Pressure : 2 bar (Absolute)
  9. Operating Temperature : -25 °C to +80 °C
  10. Max. Temperature : -55 °C to +80 °C
  11. Electrical : MIL-C-38999 class Y series III along with the mating connector and backshell.
  12. Weight : 150 grams.

A/1

Absolute Pressure Transducer (Altitude Sensor)

Absolute pressure transducer is connected to Pitot-static system of the helicopter for sensing the pressure at static port and converts this pressure into electrical signal. This signal of transducer shall be used by the recorder for continuous recording of the altitude data of the helicopter with reference to sea level (1013.25mbar).

Transducer specification is as below:

  1. Pressure range: 0 to 1 bar, absolute
  2. Altitude range: Sea level (0 ft) to 25000ft
  3. Input Power supply: 28±4 VDC for excitation
  4. Output: 0 (at 0 bar) to 5V DC (at 1bar)
  5. Accuracy: ±1 %
  6. Current Consumption: < 50mA
  7. Output Impedance: ≤ 50Ω
  8. Proof Pressure: 2 times rated pressure range (2bar)
  9. Burst Pressure: 3 times rated pressure range (3bar)
  10. Insulation Resistance: ≥100 MΩ at 50VDC
  11. Weight: ≤ 160gms
  12. Operating Temperature : – 40°C to +65°C
  13. Construction materials : Stainless Steel (Anti Corrosive)
  14. Electrical Receptacle : MIL-C-26482 series-1/ D38999 series III or equivalent MIL qualified connector.

A/2

Gauge Pressure Transducer (10 bar G)

The unit consists of a suitable transducer and signal conditioning electronics. This converts a pressure input into a proportional DC voltage output. The unit is energized by 28 Vdc (16-32 Vdc) supply. The sensor output is 0.25V – 5 Vdc corresponding to 0.4 – 10bar input pressure range. It’s function is to sense the pressure of the air media of ECS and provide a proportional electrical signal.

Transducer specification is as below:

  1. Temperature range: -55 °C to +80 °C
  2. Acceleration : -3.5 to 10 g
  3. Altitude : Up to 18 km above sea level
  4. Characteristics : Linearly varying output from 0.25V (at 0.4 bar G) to 5.0 Vdc (at 10 bar G)
  5. Sensor Supply : 28 Vdc (16-32 Vdc)
  6. Sensor Range : 0 to 10 bar (gauge)
  7. Sensor accuracy : ±2.5% of FSR
  8. Proof Pressure :20 bar (gauge)
  9. Operating Temperature : -40 °C to +80 ºC
  10. Max. Temperature : +80ºC
  11. Electrical : MIL-C-38999 class Y series III along with the mating connector and backshell.
  12. Weight : < 150 grams.

G/1

Gauge Pressure Transducer (600 mbar G)

The unit consists of a suitable transducer and signal conditioning electronics. This converts a pressure input into a proportional DC voltage output. The unit is energized by 28 Vdc (16-32 Vdc) supply. The sensor output is 0.25V – 5.25 Vdc corresponding to 0 – 600 mbar G input pressure range. It’s function is to sense the pressure of the air media at Avionics Inlet and provide a proportional electrical signal.
Transducer specification is as below:

  1. Temperature range: -55 °C to +80 °C
  2. Acceleration : -3.5 to 10 g
  3. Altitude : Up to 18 km above sea level
  4. Characteristics : Linearly varying output from 0.25V (at 0 mbar G) to 5.25 Vdc (at 600 mbar G)
  5. Sensor Supply : 28 Vdc (16-32 Vdc)
  6. Sensor Range : 0 to 600 mbar (gauge)
  7. Sensor accuracy : ±1% of FSR
  8. Proof Pressure :1.2 bar(gauge)
  9. Operating Temperature : -40 °C to +50 °C
  10. Max. Temperature : +80ºC
  11. Electrical : MIL-C-38999 class Y series III along with the mating connector and backshell.
  12. Weight : < 150 grams.

G/2

Gauge Pressure Transducer (0-200bar)

It’s Application is mainly to find the measurement of pressure inside backup Oxygen cylinder (BOS).

Transducer specification is as below:

  1. Pressure Range: 0-200Bar (Gauge)
  2. Proof Pressure: 300 Bar
  3. Full Scale Output: 2.0 V ± 0.1V
  4. Zero Pressure Output: 0 V ± 0.1V
  5. Insulation resistance: >100MΩ @50VDC
  6. Case Material: AISI 304L/APX-4 Stainless Steel
  7. Compensated Temperature Range: -40°C to + 80° C
  8. Non linearity + hysteresis: < 0.5 % F.S.O.
  9. Electrical Interface:
    • 4 Core, Colour coded Twisted, Shielded Teflon wires- 1.5m length.
    • Colour Code:
      • Red : (+ve) Input Supply 28V dC Yellow: (- ve) Input Supply
      • Green:(+ve) Output
      • White:(-ve) Output
    • Input Supply / Excitation: 16-32 V dC (Normal 28V DC)
    • Max. Input Current : < 10mA
  10. Mechanical Interface: M14x1.5 Male thread
  11. Weight: < 85 Grams with electronics and with Cable.

G/3

0-400Bar MEMS Pressure Transducer (Gauge)

It’s Application is mainly to find the measurement of Pressure inside Backup Oxygen Cylinder (BOS).

Transducer specification is as below:

  1. Pressure Range: 0-400Bar (Gauge calibrated)
  2. Proof Pressure: >800 Bar
  3. Full Scale Output: 4.5 V ± 0.1V
  4. Zero Pressure Output: 0.5V ± 0.1V
  5. Insulation resistance: >100MΩ @50VDC
  6. Case Material: AISI 304L/APX-4 Stainless Steel
  7. Compensated Temperature Range: -40◦ C to + 80◦ C
  8. Non linearity + hysteresis: < 0.5 % F.S.O.
  9. Electrical Interface:
    1. 4 Core, Colour coded Twisted, Shielded Teflon wires- 1.5m length.
    2. Colour Code:
      • Red : (+ve) Input Supply 28 Vdc
      • Yellow: (- ve) Input Supply
      • Green:(+ve) Output
      • White:(-ve) Output
    3. Input Supply / Excitation: 16-32 VdC (Normal 28 Vdc)
    4. Max. Input Current : < 10mA
  10. Mechanical Interface: M14x1.5 Male thread
  11. Weight: < 85 Grams with electronics and with Cable.

G/4

Differential Pressure Transducer (600 mbar D)

The unit consists of a suitable transducer and signal conditioning electronics. This converts a pressure input into a proportional DC voltage output. The unit is energized by 28 Vdc (16-32 Vdc) supply. The sensor output is 0.25V – 5.25 Vdc corresponding to 0 – 600 mbar D differential input pressure range. It’s function is to sense the Differential pressure across the condenser and provide a proportional electrical signal.

Transducer specification is as below:

  1. Temperature range: -55 °C to +80 °C
  2. Acceleration : -3.5 to 10 g
  3. Altitude : Up to 18 km above sea level
  4. Characteristics : Linearly varying output from 0.25V (at 0 mbar D) to 5.25 Vdc(at 600 mbar D)
  5. Sensor Supply : 28 Vdc (16-32 Vdc)
  6. Sensor Range : 0 to 600 mbar (differential)
  7. Sensor accuracy :±1% of FSR
  8. Proof Pressure :1.2 bar(differential)
  9. Max. pressure at HP : 1.6 bar(Absolute)
  10. Operating Temperature : -40 °C to +50 °C
  11. Max. Temperature : 60ºC
  12. Electrical : MIL-C-38999 class Y series III along with the mating connector and backshell.
  13. Weight : < 150 grams.

D/1

Differential Pressure Transducer (150 mbar D)

The unit consists of a suitable transducer and signal conditioning electronics. This converts a pressure input into a proportional DC voltage output. The unit is energized by 28 Vdc (16-32 Vdc) supply. The sensor output is 0.25V – 5.25 Vdc corresponding to 0 – 150 mbar differential input pressure range. It’s function is to sense the Differential pressure across the condenser and provide a proportional electrical signal.

Transducer specification is as below:

  1. Temperature range: -55 °C to +80 °C
  2. Acceleration : -3.5 to 10 g
  3. Altitude : Up to 18 km above sea level
  4. Characteristics : Linearly varying output from 0.25V (at 0 mbar D) to 5.25 Vdc (at 150 mbar D)
  5. Sensor Supply : 28 Vdc (16-32 Vdc)
  6. Sensor Range : 0 to 150 mbar (differential)
  7. Sensor accuracy :±1% of FSR
  8. Proof Pressure :0.3 bar(differential)
  9. Max. pressure at HP : 1.6 bar(Absolute)
  10. Operating Temperature : -40 °C to +50 °C
  11. Max. Temperature : +60ºC
  12. Electrical : MIL-C-38999 class Y series III along with the mating connector and backshell.
  13. Weight : < 150 grams.

D/2

Differential Pressure Transducer (Air Speed Pressure sensor)

Differential pressure transducer is connected to Pitot-Static system of the helicopter for sensing the pressure at the pitot and static port of the helicopter and converts this pressure into electrical signal. This signal of transducer shall be used by the recorder for continuous recording of the airspeed data of the helicopter.

Transducer specification is as below:

  1. Pressure range: 0 to 140mbar Differential
  2. Altitude range: Sea level (0 ft) to 25000ft
  3. Input Power supply: 28±4 VDC for excitation
  4. Output: 0 (at 0 bar) to 5V DC (at 140mbar)
  5. Accuracy: ±1 %
  6. Current Consumption : < 50mA
  7. Output Impedance: ≤ 50Ω
  8. Proof Pressure: 2 times rated pressure range (2bar)
  9. Burst Pressure: 3 times rated pressure range (3bar)
  10. Insulation Resistance: ≥100 MΩ at 50 VDC
  11. Weight: ≤ 175gms
  12. Operating Temperature : – 40 °C to +65 °C
  13. Construction materials: Stainless Steel (Anti Corrosive)
  14. Electrical Receptacle : MIL-C-26482 series-1/ D38999 series III or equivalent MIL qualified connector.

D/3

Simple 2 Layer Board to Complex PCB Assemblies as below:- Board Size 415mmx165mm- 4 Layer Board with 216 ICS and 3680 Passives.

PASF