초록 ▼

A display monitor for monitoring data flowing on the avionics data buses of an aircraft includes an interface card (53) for interfacing a PC (51) to avionics buses (31, 33, 35, 37, 39) and a set of discrete input/output lines (63). The interface card (53) includes a series of ARINC receiver/transmit

A display monitor for monitoring data flowing on the avionics data buses of an aircraft includes an interface card (53) for interfacing a PC (51) to avionics buses (31, 33, 35, 37, 39) and a set of discrete input/output lines (63). The interface card (53) includes a series of ARINC receiver/transmitters (65, 67, 69, 71), a programmed CPU (55), a primary memory (59) and a dual port I/O memory (61). The ARINC receiver/transmitters provide communication paths to the avionics data buses and the dual port I/O memory (61) provides a communication path to the PC data bus (75). The interface card CPU (55) continuously scans the ARINC receiver/transmitters looking for avionics data and, at greater intervals, the discrete input lines (63) and the dual port I/O memory (61) looking for commands. ARINC data is initially “dumped”into the card primary memory (59) and later transferred to the dual port shared memory (61) from whence it is transferred to a work buffer in the PC. As it occurs, new data is written over old data. The high/low state of the discrete lines are used to control the setting of flags in the dual port shared memory (61). The PC (51) continuously scans the dual port shared memory (61) and the PC keyboard (52). In response to either discrete flags or PC keyboard commands, the PC shifts data in the work buffer to more permanent storage and/or prints selected data stored in the work buffer. The PC keyboard is also used to create commands that switch the monitor from a strictly monitoring mode of operation to an autotest/monitoring mode of operation. When in the autotest/monitoring mode of operation, key push buses are decoupled from avionics equipment and the PC is used to create commands similar to those produced by the decoupled key push sources. The data resulting from the commands is handled in the same way similar data is handled in the strictly monitoring mode of operation.

대표청구항 ▼

A general purpose avionics display monitor comprising: (a) an interface means for interfacing a data processing system to a plurality of aircraft data buses for conveying data from the aircraft data buses to the data processing system, said interface means including: (i) a dual port shared memory; (

A general purpose avionics display monitor comprising: (a) an interface means for interfacing a data processing system to a plurality of aircraft data buses for conveying data from the aircraft data buses to the data processing system, said interface means including: (i) a dual port shared memory; (ii) a program memory; (iii) a plurality of data receivers suitable for connection to aircraft data buses for receiving data flowing on said aircraft data buses; (iv) a transfer data bus coupled to one port of said dual port shared memory, and said plurality of data receivers for transferring data therebetween; and (v) a CPU coupled to said transfer data bus, said CPU programmed to control the flow of data on said transfer data bus such that data received by said plurality of data receivers is first transferred to said program memory in a rapid manner and later transferred in a slower manner to said dual port shared memory; and (b) a data processing system coupled to the other port of said dual port shared memory for receiving data stored in said dual port shared memory and for displaying and storing said data, said data processing system including: (i) a user interface mechanism for receiving user commands; (ii) a mass storage for receiving data from said dual port shared memory and storing said data when a user causes a first predetermined command to be generated by said user interface mechanism; and (iii) a monitor for displaying data received from said dual port shared memory.