Patent ID: 9672880
Date: 2017-06-06
CPC Classifications: G11C

Claim:
1. A radiation upset detector for use with a protected system, the radiation upset detector comprising: at least one radiation sensitive memory initialized with at least one respective known-signature word; and at least one radiation hardened logic circuitry communicatively coupled to exchange data with the at least one respective radiation sensitive memory in order to check the at least one known-signature word at at least a kHz rate to detect errors, wherein at least a portion of the at least one radiation hardened logic circuitry is radiation hardened to withstand radiation events, wherein responsive to detecting an error in the known-signature word in the respective at least one radiation sensitive memory, the at least one radiation hardened logic circuitry is further configured to send an action command, and wherein a memory size of the at least one radiation sensitive memory; a number of circuits in the at least one radiation hardened logic circuitry; a clock rate for the checking the at least one known-signature word; and at least one corruption threshold are selected based on system reliability requirements of the protected system including at least one of: an overall operational reliability requirement of the protected system; a probability of detection success; false alarm rates; and a required speed of detection.