Difference between revisions of "Hardened electronics"
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| − | [[Electronics]] in transit to, and on the surface of [[Mars]] are constantly bombarded by [[radiation]]. '''Hardened electronics''' are designed to resist the effects of this radiation. | + | [[Electronics]] in transit to, and on the surface of [[Mars]] are constantly bombarded by [[radiation]]. '''Hardened electronics''' are designed to resist the effects of this radiation to some degree, extending the [[wear lifespan]] to several months or even a couple years. |
==Physical Hardening== | ==Physical Hardening== | ||
| − | Physical [[radiation shielding|shielding]], such as [[heavy metals]] or a [[Faraday Cage]] can block many types of radiation before it affects the electronics | + | Physical [[radiation shielding|shielding]], such as [[heavy metals]] or a [[Faraday Cage]] can block many types of radiation before it affects the electronics. Depending on the shield strength, the incoming radiation is reduced to a lower value. |
==Design Hardening== | ==Design Hardening== | ||
| − | Electronics can be designed to resist radiation, to a certain degree. | + | Electronics can be designed to resist radiation, to a certain degree. The size of semiconductor structures, for example, has an effect. Fine structures are more prone to radiation damage than chunky structures. |
==Hardened Programming== | ==Hardened Programming== | ||
| − | [[Fail-safe|Redundancy]], sanity checks, and dead man switches can ensure reliability and notify operators of errors. | + | [[Fail-safe|Redundancy]], sanity checks, and dead man switches can ensure reliability and notify operators of errors. The system is able to continue working even if parts are damaged. The faulty parts are automatically recognized and switched off. |
==External Links== | ==External Links== | ||
Revision as of 11:43, 22 December 2008
Electronics in transit to, and on the surface of Mars are constantly bombarded by radiation. Hardened electronics are designed to resist the effects of this radiation to some degree, extending the wear lifespan to several months or even a couple years.
Physical Hardening
Physical shielding, such as heavy metals or a Faraday Cage can block many types of radiation before it affects the electronics. Depending on the shield strength, the incoming radiation is reduced to a lower value.
Design Hardening
Electronics can be designed to resist radiation, to a certain degree. The size of semiconductor structures, for example, has an effect. Fine structures are more prone to radiation damage than chunky structures.
Hardened Programming
Redundancy, sanity checks, and dead man switches can ensure reliability and notify operators of errors. The system is able to continue working even if parts are damaged. The faulty parts are automatically recognized and switched off.
External Links
Expecting the Unexpected - Radiation Hardened Software (NASA)
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