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EICAS (B737)
Vergleiche: EICAS/ECAM : ECAM A330 | EICAS B737
EICAS - Engine Indication and Crew Alerting System heisst zu Deutsch: Triebwerksanzeige und Besatzungs Warnsystem.
EICAS ist bei Boeing und anderen Flugzeugherstellern die Bezeichnung für ein System, welches bei Airbus als ECAM bezeichnet wird.
EICAS (bzw. ECAM) stellt den Piloten die Anzeige der wichtigsten Triebwerksparameter auf einem Farbbildschirm bereit, und informiert die Besatzung, wenn bestimmte Parameter der Triebwerksanlage nicht mehr der Norm entsprechen. Damit kann die Besatzung von der ermüdenden Tätigkeit der Triebwerkskontrolle entbunden werden, was es letztlich ermöglichte, auf einen Flugingenieur zu verzichten.
Mit EICAS und ECAM können sämtliche Systeme des Flugzeugs überprüft werden. Dazu kann der Pilot einzelne Systeme wie zum Beispiel das Hydrauliksystem oder das Treibstoffsystem auf dem Bildschirm anzeigen lassen.
Darüber hinaus bieten EICAS und ECAM auch Fehlermeldungen und Warnungen für alle Systeme des Flugzeugs, sowie Hilfen zum Umgang mit der Warnmeldung. Die passende Systemseite wird dabei automatisch eingeblendet.
EICAS oder ECAM wird in Verbindung mit dem elektronischen Fluginformationssystems EFIS eingebaut. Die Bildschirme sind redundant aufgebaut, das heisst, bei Ausfall eines Bildschirm können die Informationen auf andere Bildschirme umgeschaltet werden.
EICAS im Detail
The EICAS typically contains two large color displays, EICAS control panels, two or three EICAS DCUs and the lamp driver unit. Each LRU is described below.
- Pilot Primary EICAS Display ED-1
- Copilot Secondary ED-2
- ECP-4000 EICAS Control Panel
- Pilot DCU-4000 EICAS
- Copilot DCU-4000 EICAS
- Optional third DCU-4000 EICAS DCP
- LDU-4000 Lamp Driver Unit
- Pilot ERU-4000 EICAS Routing Unit
- Copilot ERU-4000
The primary EICAS (ED-1) displays the primary engine indication instruments and crew alerting messages. The primary display is a fixed format of engine, oil, fuel and gear data. The left side ED receives data bus inputs from the EICAS DCUs and EICAS control panel. The left side ED provides a data bus output to the IAPS data concentrators.
The secondary EICAS (ED-2) displays various data pages and serves as a backup to the primary display. The pages are selected using the ECP-4000. The right side ED receives data bus inputs from the EICAS DCUs and EICAS control panel. The right side ED provides a data bus output to the IAPS data concentrators.
A remote EICAS reversion switch allows the pilot or copilot to select either display. Selecting one display blanks the other tube and allows data pages to be selected on the remaining display using the ECP panel.
The ECP-4000 is used to select the EICAS data page displays. The panel pushbuttons select data pages. The ECP applies this information on the data buses to both EICAS displays and both MFDs.
The pilot DCU-4000 collects and formats aircraft data for display on the EICAS. The DCU performs the flight data acquisition functions for the flight data recorder. The crew alerting logic is processed in the DCU. The DCU receives high- and low-speed ARINC 429 buses, analog inputs and discrete inputs from the engines and other aircraft systems. The data inputs are concentrated and processed for transmission on ARINC 429 buses. The DCU outputs engine data to the displays; maintenance, diagnostic and aircraft data to the IAPS data concentrators; annunciator lamp data to the Lamp Driver Unit; aircraft system data to the flight data recorder and data link management unit.
The copilot DCU-4000 collects and formats aircraft data for display on the EICAS. The DCU performs the flight data acquisition functions for the flight data recorder. The crew alerting logic is processed in the DCU. The DCU receives high- and low-speed ARINC 429 buses, analog inputs and discrete inputs from the engines and other aircraft systems. The data inputs are concentrated and processed for transmission on ARINC 429 buses. The DCU outputs engine data to the displays; maintenance, diagnostic and aircraft data to the IAPS data concentrators; annunciator lamp data to the LDU; aircraft system data to the flight data recorder; and data link management unit.
The optional DCU-4000 performs the same functions as described.
The LDU-4000 is a dual-channel lamp driver unit capable of driving up to 120 annunciator lamps. Channels 1 and 2 receive digital buses from all the DCUs. The buses contain lamp activation words from the DCUs. Channels 1 and 2 are identical and the outputs from each side are tied together (OR logic). If one channel lamp sink fails, the other channel lamp sink will provide the annunciator function. The LDU monitors the lamp sinks to verify correct function and outputs the lamp sink states on a digital bus to the DCUs.
The ERU-4000 are junction boxes for the DCUs. The ERU splits each input signal to three output pins. The pilot ERU routes left side airplane data and the copilot ERU routes right side airplane data.
Electronic Flight Display