Radiation Tolerant Analog I/O Module KM6782.1

Transcription

1 Radiation Tolerant Analog I/O Module KM MAIN FEATURES Power Consumption: 2W Voltage channels: 16 diff. signals Temperature Channels: 22 x AD590 & 6 PT1000 Onboard Calibration Dimensions: 160x100 mm 2 (Europe Card Size) Mass: 0.26 kg ITAR USML XV (e). APPLICATIONS Part of the payload supply system for small and medium satellites (data handling module) Instrument control computer (ICU) General purpose Analog I/O module for space. DESCRIPTION OHB System AG s radiation tolerant Analog I/O Module has been developed as a part of Payload Supply System (PSS) modular architectures for small and medium satellites. The Analog I/O Module consists of: Measurement of analog differential signals external and internal Excitation of the PT1000 and AD590 temperature sensors Measurement of analog differential HK signals of the PSS power modules and the appropriate signal conditioning Performance of self-calibration routines. Two 16-Bit ADCs are used on the analog module for redundancy. The measured analog data is available on two SPI busses on the connected CPU modules. The Analog I/O Module has been successfully operated as a part of the PSS of the TET-1 Satellite mission, launched in Top side of the Analog I/O Module RADIATION HARDENING PARAMETER MIN TYP MAX UNIT COMMENTS TID 5 Krad SEL 58,7 MeV-cm 2 /mg SEE 30 MeV- cm2/mg More information about radiation hardening features and radiation test conditions is available upon request. AVAILABLE OPTIONS PRODUCT PART COMPONENT FUNCTIONAL TEMP. NUMBER TEMP. RANGE RANGE Analog I/O Module EM KM6782.1A -25 C +85 C -20 C- +60 C Analog I/O Module FM KM6782.1B -55 C 125 C -20 C- +60 C ARQUIMEA DEUTSCHLAND GmbH 1

2 MAIN PARAMETERS Nº PARAMETER VALUE UNIT COMMENTS 1 Analog Differential Inputs 0 to 6 V Can be adjusted to other values 2 AD590 Temperature Inputs -20 to +50 C 3 PT1000 Temperature Inputs 0 to 120 C 4 HK-Voltage/Current Inputs 0 to 6 V 5 HK-Temperature Inputs -20 to +50 C 4 SPI Bus 1(speed)[nominal] 0.1 MHz 5 SPI Bus 2(speed)[redundant] 0.1 MHz 8 Calibration AD590 9 Calibration PT Calibration differential voltage C C V Can be adjusted to other temperature values Can be adjusted to other temperature values Channel switching and analog bus control (nominal) Channel switching and analog bus control (redundant) BLOCK DIAGRAM Analog I/O Module architecture Payload Supply System (PSS) architecture ARQUIMEA DEUTSCHLAND GmbH 2

3 APPLICATION NOTES OHB SYSTEM AG s Radiation Tolerant analog I/O Module has been successfully used in the on-orbitverification satellite TET-1. The TET-1 mission is a German program funded by the German Space Agency (DLR). The goal of the small satellite TET (120 kg mass and 880x670x580 mm 3 ) is support to the German industry and research institutes with the On-Orbit-Verification (OOV) of new innovative satellite technologies. In total, eleven payloads were accommodated on the satellite. TET-1 was launched in summer OHB SYSTEM AG was the prime contractor for the phase C/D. The TET-2 mission is already planned. Measurement and excitation of the PT1000 temperature sensors of the payloads and the appropriate signal conditioning. Measurement and excitation of the AD590 temperature sensors of the payloads and the appropriate signal conditioning. Measurement of analog differential HK signals of the PSS power modules and the appropriate signal conditioning. Multiplexing of the analog measurement signals, analog to digital conversion, and digital data transmission to the CPU upon request. Performance of self-calibration routines. The TET satellite consists of three basic elements: satellite bus, payloads, and payload supply system (PSS). The PSS separates the bus from the different payloads. The PSS is an advanced data and power system for small low earth orbit satellites. The Analog I/O module is part of the PSS architecture. The analog I/O module has the following functions: Measurement of analog differential signals of the payloads and the appropriate signal conditioning. The Analog I/O Module contains two 12-Bit ADconverter with SPI bus control for each converter for redundant use. The Analog I/O Module contains two multiplexers to interface to the HK-values of the DC/DC modules KM6788 and the power distribution modules KM6790 either on the primary and the secondary power side. The Analog I/O module contains also two times 5 HKtemperature inputs for housekeeping on the KM67xx family modules. Sensors used are the AD590 type. ARQUIMEA DEUTSCHLAND GmbH 3

4 ELECTRICAL CHARACTERISTICS PARAMETER Remarks MIN TYP MAX UNIT SPI Bus 1 nominal: * MHz Data SPI Clk SPI CS SPI SPI Bus 2 redundant: * MHz Data SPI Clk SPI CS SPI INPUTS *2) Analog Differential 0 to V Temperature AD590 0 to C HK Voltage/Current 0 to 7 priminary 0 6 V HK Voltage/Current 0 to 7 secondary 0 6 V HK Temperature AD590 0 to 4 primary C HK Temperature AD590 0 to 4 secondary C PT to C Calibration functions Analog Differential 50%value 3 V Analog Differential 0%value 0 V Temperature AD590 0 to 18 : 50 C 50 C Temperature AD590 0 to 18 : 0 C 0 C PT to 5 : 97 C 97 C PT to 5 : 0 C 0 C POWER SUPPLY Module Supply V Module Supply V TEMPERATURE RANGE Engineering Model * C Flight model * C *1) SPI Bus compatible with the CPU Module KM6792 and the other modules of the family KM67xx. *2) Standard levels; levels can be adapted to user defined values. *3) With industrial components and thermal performance test (OHB test procedure, available upon request) *4) Environmental tests according to ECSS: Shock/Vibration, Thermal Vacuum, EMC (procedures available upon request) RADIATION TEST PERFORMANCE The radiation performance is defined via a radiation analysis which is based on available test data of the radiation sensitive parts. The result on component basis is listed in the Declared Components List. ARQUIMEA DEUTSCHLAND GmbH 4

5 QUALITY STANDARDS OHB System AG develops its activities under the premises of quality and sustainability, offering efficient, liable and innovative technologies and solutions to its customers. OHB System AG is certified for development, production and distribution of systems for science, space transportation and industrial applications (ISO 9001:2008 DEKRA certificate No /5). In order to meet the highest quality and reliability, OHB System AG designs and develops its aerospace product line according to space standards. ABOUT OHB SYSTEM AG OHB SYSTEM AG is a medium-sized space company located in Munich and is system prime for complex scientific instruments, small satellites and space missions. We play a leading role in national and international space projects We create superior systems in optics, electronics, robotics and mechanics We transfer space technology into industrial applications. OHB System AG's technology solutions aim high and reach their mark. When it comes to space activities even several hundred thousands of kilometers. Developments originally made for space applications find their way back to earth and into applications in the railway sector which is also a focal point of OHB System AG's activities. OHB SYSTEM AG listed on the Prime Standard (ISIN: DE ). CONTACT (information and sales) ARQUIMEA DEUTSCHLAND GmbH Im Technologiepark 1 Raum 310, Frankfurt (Oder) DE Tel.: +49 (0) deutschland@arquimea.de ARQUIMEA DEUTSCHLAND GmbH 5

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