Aircraft skin valve monitoring device and method

Abstract

The invention relates to an aircraft skin valve monitoring device. The device comprises a collector (21), a processor (22) and a memory (23) which are connected in sequence. The collector (21) is further connected with an outlet valve angular displacement sensor (24) and an inlet valve angular displacement sensor (25). The processor (22) comprises an information acquisition module used for acquiring time information of an outlet valve full-open position, an outlet valve full-closed position, an outlet valve semi-open loop state, an inlet valve full-open position and an inlet valve full-closedposition, a characteristic value calculation module used for calculating the actuation duration of an inlet valve and the actuation duration of an outlet valve to obtain characteristic values, and a trend monitoring module used for monitoring the characteristic values in real time and giving an alarm when the characteristic values exceed a preset range. Compared with the prior art, the invention has the advantages that the prediction before a valve fault is effectively achieved through a trend monitoring method, the accuracy is high, the operation risk of an airplane is reduced, the efficiencyof maintenance work is improved, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to an airborne system and method, in particular to an aircraft skin valve monitoring device and method. Background technique [0002] The electronic cabin ventilation system mainly provides cooling for the computer equipment in the electronic cabin. As an important part of the electronic cabin ventilation system, the aircraft electronic cabin ventilation system has three working modes, which are open-loop mode, closed-loop mode and intermediate mode. According to the ambient temperature and aircraft The electronic compartment ventilation system works in different forms depending on the shape of the open space. [0003] In the open-loop mode, both the skin air inlet valve and the outlet valve are fully opened, and the external air is sucked in by the blower fan through the skin air inlet valve, and after cooling for various electronic and electrical equipment in the electronic cabin and cockpit, it is then drawn out by the exhaust ...

AI Technical Summary

Problems solved by technology

[0011] The opening or closing time of the anti-icing valve of the monitoring system needs to be corrected based on the bleed air pressure, which increases the complexity of the monitoring system, and the accuracy of the correction results depends on the correct setting of the correction parameters, which increases the reliability of the monitoring system. factor

In summary, the monitoring system has the defects of high complexity and low reliability

[0012] And when the valve of the electronic cabin ventilation system not only has an open-loop form and a closed-loop form, but also has a semi-open-loop form, the above monitoring system only takes into account the open-loop form and the closed-loop form. Open-loop morphology produces false positives

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