In this paper, an interface circuit based on aircraft consumption sensor is proposed. Sinusoidal AC excitation signal with a peak value of 10V± 20% to the ground and a frequency of 4000HZ±10HZ is applied to the consumption sensor, and the excitation signal is monitored. At the same time, the envelope signal with a maximum amplitude of 1.2-1.3V output by the consumption sensor is collected. The envelope number is demodulated by diode detection circuit, proportional amplifier circuit and hysteresis comparator circuit, so as to realize the monitoring of aircraft engine fuel consumption. The pilot can manage aircraft fuel according to the consumption. The method has been verified by practical engineering.
Ensuring the safety state of a product is a crucial consideration during system design, especially during transient periods such as power-up when the logic loading process occurs. Poor design in such cases can often lead to false outputs from the product, causing unintended operation of external loads and posing risks. To guarantee that the product meets the safety requirements during power-up transients, this article proposes an improved hardware configuration design during FPGA loading. The effectiveness of the improved design is verified through implementation and validation, and several key points to be noted in subsequent designs are summarized.
On the aircraft, the utilities management computer completes the information interaction with the utilities systems and the avionics system, which plays a vital role in ensuring the safe flight of the aircraft. This paper mainly discusses the voice alarm mechanism of utilities systems based on utilities management computer. For the voice alarm that occurs during the flight, the fault inspection and mechanism analysis are carried out. For the reported bus access timeout fault, the fault location is completed, and a solution is proposed. It will provide important support for the development and guarantee the computer to ensure the safe flight of the aircraft and the utilities management.
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