Patent ID: 7474989

Claim:
An electronic assembly comprising: functional circuit embodied on a substrate; sacrificial sensor capable of exhibiting an incremental change upon exposure to an environmental stress factor; detector capable of generating a detection signal according to an incremental change exhibited by the sacrificial sensor; environmental sensor capable of detecting the state of an environmental stress factor; conditioning circuit capable of generating an environmental stress signal according to the state of the environmental sensor; prediction unit capable of generating a prediction signal according to the detection signal and the environmental stress signal; and wherein the prediction unit comprises: processor capable of executing an instruction sequence; memory capable of storing one or more instruction sequences and is further capable of storing information; external interface that enables the processor to communicate with an external apparatus; failure prediction table stored in the memory; and one or more instruction sequences stored in the memory including: accumulator module that, when executed by the processor, minimally causes the processor to create in the memory an accumulated stress value according to the environmental stress signal; correlation module that, when executed by the processor, minimally causes the processor to update a failure prediction in the failure prediction table according to the accumulated stress value and also according to the detection signal; prediction module that, when executed by the processor, minimally causes the processor to store in the memory a failure prediction message generated according to a prediction stored in the failure prediction table and selected according to the accumulated stress signal; and communications module that, when executed by the processor, minimally causes the processor to direct the failure prediction message from the memory to the external interface.