Nasa Rover Perseverance: With a 200 MHz CPU to Mars

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from Claus Ludewig
For the current NASA mission on Mars, the Rover Perseverance uses an on-board computer with a CPU with only 200 MHz. However, the computer has to work under extreme conditions.

On February 18, 2021, the NASA rover Perseverance landed on Mars.

 The  mission is to collect rocks and then bring them to earth later. © www.de24.news

 The  researchers want to find out whether living things can be found on the red planet. © www.de24.news

 The  rover’s on-board computer uses the RAD750 processor from BAE Systems from Great Britain. Here, the CPU technology corresponds to the two billion US dollar mission of the PowerPC 750 architecture. © www.de24.news

 The  CPU clocks between 110 and 200 MHz, which is ten times faster than the predecessor Rover Spirit and Opportunity. © www.de24.news

 The  hardware of the Rover Perseverance is almost identical to the on-board computer of the Rover Curiosity launched in 2011.

A special housing makes the Rover Perseverance’s on-board computer so special

© www.de24.news

 The  built-in technology is not very spectacular, but the on-board computer has to work reliably in the temperature range between -55 and 125 degrees Celsius. In addition, the entire computing unit must be insensitive to radiation and charged ions. © www.de24.news

 The  technology can withstand radiation doses of up to 10,000 Gy; even a value of 6 Gy is fatal for a person. © www.de24.news

 The  RAD750’s special insulation cost approximately $ 200,000. In addition, the Rover Perseverance has installed a second RAD750 so that you can simply switch back and forth between the two identical processing units in the event of problems.


© www.de24.news

 The  on-board computer also has 356 megabytes of RAM and two gigabytes of flash memory. © www.de24.news

 The  computer’s temperature is kept constant with a Warm Electronics Box. Conventional processors in notebooks and smartphones would not be able to cope with the amount of radiation. As the operating system, NASA relies on the real-time operating system VxWorks, which has been performing reliably in the Mars rover Curiosity for a good 10 years.

13:49
Tops and Flops 2020: © www.de24.news

 The  hardware highlights and disappointments of the last year

Also worth reading: [PLUS] 10 Intel generations in the IPC comparison: from Core i7-965XE to Core i9-10900K

Collection for the Mars rover Perseverance and the on-board computer used:

  • © www.de24.news

     The  current generation of the Perseverance rover uses a CPU with a clock rate of 200 MHz.

  • © www.de24.news

     The  rover’s on-board computer uses the RAD750 processor from BAE Systems from Great Britain.

  • However, the US $ 200,000 computer is in a special housing so that the on-board computer can withstand up to 10,000 Gy radiation. For a human being, 6 Gy are fatal.

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Source: Heise Online



[PLUS]  10 Intel generations in the IPC comparison: from Core i7-965XE to Core i9-10900K



[PLUS] 10 Intel generations in the IPC comparison: from Core i7-965XE to Core i9-10900K



PCGH Plus: Whether a higher clock rate or more cores: Each new generation of processors includes improved IPC performance. We tested the effects of 12 years of processor development in ten games. © www.de24.news

 The  article comes from PC Games Hardware 03/2021.
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