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with primary mission to measure the earth’s atmosphere with the help of a mass spectrometer. | with primary mission to measure the earth’s atmosphere with the help of a mass spectrometer. | ||
− | = | + | = On-Board Computer (OBC) = |
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− | + | The On-Board Computer (OBC) transfers information between the subsystems, | |
− | + | mainly from the radio to mission payload and back. | |
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− | + | In the [https://www.epflspacecraftteam.com/chess-1 CHESS mission], | |
− | + | it communicates: | |
− | + | * with the EPS through [[OBC/CAN|OBC/CAN]] | |
− | + | * with the ADCS through a serial link | |
− | + | * with the radios through a SPI link | |
− | + | * with the mass spectrometer through a SPI link | |
− | + | * with the GPS board through a SPI link | |
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− | + | The data processing is distributed between a microprocessor and a FPGA logic. | |
+ | Additionally, a [[OBC/PIC PIC microcontroller]] bridges the FPGA to the [[OBC/CAN|OBC/CAN bus]]. | ||
− | = | + | = Attitude Determination and Control System (ADCS) = |
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Latest revision as of 12:01, 18 September 2020
CHESS mission
The CHESS mission wants to fly 2 Cubesats with primary mission to measure the earth’s atmosphere with the help of a mass spectrometer.
On-Board Computer (OBC)
The On-Board Computer (OBC) transfers information between the subsystems, mainly from the radio to mission payload and back.
In the CHESS mission, it communicates:
- with the EPS through OBC/CAN
- with the ADCS through a serial link
- with the radios through a SPI link
- with the mass spectrometer through a SPI link
- with the GPS board through a SPI link
The data processing is distributed between a microprocessor and a FPGA logic. Additionally, a OBC/PIC PIC microcontroller bridges the FPGA to the OBC/CAN bus.