Distributed built-in test equipment system for digital avionics

Details Distributed built-in test equipment system for digital avionics Distributed built-in test equipment system for digital avionics

1991-04-26

1993-02-02

Lall, Parshotam S.

Boots, shoes, and leggings

364580, 371 18, G06F 1100

Patent

active

051843129

ABSTRACT:
A distributed BITE system for a digital avionic system. The avionic system comprises a plurality of LRUs and digital communication devices through which the LRUs can transmit and receive data in a predefined format comprising multiple bit communication words. The avionic system further includes an interface unit (12) and at least one distributed computer system (14, 16, 18). The interface unit includes a control/display unit (20) that comprises a display screen (22) and input device such as a keyboard (24, 26). The digital communication devices may include a first bus (40) through which the interface unit can transmit communication words to the distributed computer system, and a second bus (42, 44, 46) through which the distributed computer system can transmit communication words to the interface unit. The BITE system comprises a distributed BITE program (72, 74, 76) in the distributed computer system, and a passthrough program (78) in the interface unit. The distributed BITE program has an interactive structure wherein the program receives input data including commands provided by an operator and provides output data including fault data for use by the operator. The distributed computer system is adapted to receive its input data over the first bus in the predefined format, and to transmit its output data onto the second bus in the same format. The passthrough program comprises receiving input data from the control/display unit, formatting the input data in the predefined format, and causing the input data to be transmitted to the distributed computer system over the first bus. The passthrough program also comprises receiving output data from the second bus and causing the output data to be transmitted to the control/display unit for display on the display screen thereof.

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