Method and device for detecting hardware errors in microprocessors

摘要

Apparatus and method for detecting a hardware failure in a microprocessor comprising comparing a first result of a first application executing on a first microprocessor (106) with a second result of a second application resident on the first microprocessor (106) or a first microprocessor (106) second microprocessor (110) by means of a microcontroller (102) providing different comparison strategies, wherein the hardware error is detected depending on the result of the comparison, wherein the microcontroller (102) receives a first message (104) from the first microprocessor (106) Microcontroller (102) receives a second message (108) from the first microprocessor (106) when the second application is run on the first microprocessor (106) or from the second microprocessor (110) when the second application is on the second microprocessor (110 ), wherein the first message (104) contains information about a first comparison strategy and Information about a first result of a first calculation of a function by the first application, wherein the second message (108) contains information about a second comparison strategy and information about a second result of a second calculation of the function by the second application, wherein the information about the comparing first comparison strategy with the information about the second comparison strategy, wherein if the information about the comparison strategy matches, the information about the first result is compared with the information about the second result.