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Digital airborne fuel oil measurement and control system

A technology of fuel measurement and control and oil quantity, which is applied in the general control system, control/regulation system, computer control, etc., and can solve the problem of insufficient peripheral interfaces of the DSP control system, complicated CPU peripheral interface circuits, and expensive measurement system chips, etc. problem, to achieve the effect of volume reduction, low cost, and cost reduction

Inactive Publication Date: 2019-06-07
四川泛华航空仪表电器有限公司
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AI Technical Summary

Problems solved by technology

With the development of advanced aircraft control technology and the needs of digital fuel system management, the airborne digital fuel measurement and control system has become an inevitable trend of development. At present, the airborne digital fuel measurement and control system mainly adopts the control architecture combining DSP and FPGA. The measurement system chip of the architecture is more expensive, and the system volume is relatively large; because the algorithm involved in fuel measurement is relatively simple, using DSP for data processing seems to be a waste of resources, and the CPU peripheral interface circuit is more complicated. At the same time, the peripheral of the DSP control system The interface is not rich enough, and the function expansion of the system is mainly realized by FPGA, so the number of gates of the FPGA chip selected in this way increases, which brings about the increase of system cost

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  • Digital airborne fuel oil measurement and control system
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Embodiment Construction

[0018] figure 1 A circuit principle block diagram of a digital on-board fuel oil measurement and control system of the present invention is shown. A digital airborne fuel oil measurement and control system of the present invention, a digital airborne fuel oil measurement and control system, includes a sensor signal processing circuit, a communication drive circuit, a photoelectric isolation circuit and a fuel quantity signal device, and is characterized in that it also includes a single-chip microcomputer STM32. The single-chip microcomputer STM32 described above is electrically connected to the sensor signal processing circuit used to process and calculate the fuel temperature, oil quantity and consumption, and the communication drive circuit used to communicate with the host computer. The described single-chip microcomputer STM32 is connected to control the digital input and output Programmable logic device CPLD, said programmable logic device CPLD connects and transmits the...

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Abstract

The invention discloses a digital airborne fuel oil measurement and control system which comprises a sensor signal processing circuit, a communication driving circuit, a photoelectric isolation circuit and an oil quantity signaling device. The system is characterized by also comprising a single-chip microcomputer STM32, the single-chip microcomputer STM32 is electrically connected with the sensorsignal processing circuit for processing and calculating the fuel oil temperature, oil quantity and oil consumption and the communication driving circuit communicated with a host computer, the single-chip microcomputer STM32 is connected with a CPLD (Complex Programmable Logic Device) for controlling the input / output digital quantities, and the CPLD is connected with the oil quantity signaling device, for transmitting zero and full adjusting signals and oil exhausting and full signals of the airborne fuel oil, via the photoelectric isolation circuit, and transmits a control valve signal of a fuel pump. Based on STM32 and CPLD combined control configuration, a digital bridge is used to measure the fuel oil, and thus, the size is small, development is simple, the cost is low, and a lot of peripheral interfaces are included.

Description

technical field [0001] The invention relates to a fuel oil measurement and control system, in particular to a digital airborne fuel oil measurement and control system for an aircraft. Background technique [0002] The fuel measurement and control system is a subsystem of the aircraft fuel system. Its function is to provide fuel reserve information and engine fuel consumption information. It is one of the basic function guarantee systems of the aircraft. Due to large fuel measurement errors and fluctuations caused by attitude changes during aircraft flight, the accuracy of fuel measurement is required to be high; especially the sensors, cables, and annunciators of the fuel measurement and control system are installed in the fuel tank and enter the fuel tank. Maintenance is very difficult, therefore, the requirements for maintenance-free are also very high. After more than half a century of development, although the measurement accuracy of the fuel measurement and control sys...

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Application Information

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IPC IPC(8): G05B19/05G05B19/042G01D21/02
Inventor 许扬邹波涛刘兆强李霞成天驹
Owner 四川泛华航空仪表电器有限公司
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