Title :
Error detection in fault secure controllers using state encoding
Author :
Voskamp, Eckart ; Rosenstiel, Wolfgang
Author_Institution :
Robert Bosch GmbH, Stuttgart, Germany
Abstract :
In applications where safety is of utmost importance, defective functions must frequently be detected very early in order to restore the system to a safe operating condition. At the same time the availability may not be restricted by measures implemented to detect errors. The efficiency of error detection state encodings for a control unit is investigated based on the example of the Motorola microprocessor core M68HC11. The terms “dependent encoding” and “independent encoding” are introduced. The designed circuits are compared with regard to error detection of stuck-at errors and chip area. The degree of error detection is shown with the help of a fault simulation
Keywords :
computer testing; encoding; error detection; error detection codes; fault diagnosis; fault tolerant computing; integrated circuit testing; logic testing; microcontrollers; M68HC11; Motorola microprocessor core; chip area; error detection; fault secure controllers; fault simulation; safe operating condition; state encoding; stuck-at errors; Circuit faults; Circuit simulation; Electrical fault detection; Encoding; Error correction; Error correction codes; Fault detection; Hardware; Safety; Time measurement;
Conference_Titel :
European Design and Test Conference, 1996. ED&TC 96. Proceedings
Conference_Location :
Paris
Print_ISBN :
0-8186-7424-5
DOI :
10.1109/EDTC.1996.494149
