Vehicle electronic control using one A/D converter for time-sync

Details Vehicle electronic control using one A/D converter for time-sync Vehicle electronic control using one A/D converter for time-sync

1998-06-26

1999-11-23

Wolfe, Willis R.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

341141, 701101, 701102, H03M 112, F02D 4500

Patent

active

059916869

ABSTRACT:
Various sensor signals of an engine are A/D-converted by an A/D converter of a sub-microcomputer by an A/D conversion request from a main microcomputer. The A/D conversion is executed a plurality of times within one packet for important parameters in the various sensor signals in the A/D conversion request timing per constant time with a longer time interval than a time required for the A/D conversion by an A/D conversion request timing asynchronous to the A/D conversion request. Thereby, normal ones among a plurality of A/D-converted values A/D-converted by the A/D conversion request of the main microcomputer even if the preceding A/D conversion request is issued asynchronously to the A/D conversion request of the main microcomputer.

REFERENCES:
patent: 4264898 (1981-04-01), Barman et al.
patent: 4945486 (1990-07-01), Nitschke et al.
patent: 5541601 (1996-07-01), Goto et al.
patent: 5812880 (1998-09-01), Goto et al.

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