Intelligent pressure sensor system for intelligent engine distributed control

A pressure sensor, distributed control technology, applied to engine components, machines/engines, instruments, etc.

Inactive Publication Date: 2020-03-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In terms of bus implementation, the mature CAN bus has been studied more in China, but due to its working principle, the communication rate has reached the limit, and the high failure rate is also unacceptable for modern aerodynamic control

Method used

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  • Intelligent pressure sensor system for intelligent engine distributed control
  • Intelligent pressure sensor system for intelligent engine distributed control
  • Intelligent pressure sensor system for intelligent engine distributed control

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Embodiment Construction

[0054] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0055] figure 1 It is the overall structure of the aero-engine intelligent pressure sensor. Combined with the distributed control system of the aero-engine, multiple functional units such as the signal processing unit of the intelligent pressure sensor, the intelligent calculation unit of the intelligent pressure sensor, the TTP / C communication unit of the intelligent pressure sensor and other circuits of the intelligent pressure sensor are designed respectively. In the hardware part, a second-order active filter is designed to filter and amplify the collected sensor signals. The AD7793 chip of ADI Company is used to collect the dual temperature sensor channels. The TTP / C bus controller adopts the AS8202NF chip provided by TTTech Company. The hardware part is mainly designed for the peripheral circuit of the TTP protocol controller, includi...

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Abstract

The invention discloses an intelligent pressure sensor system for distributed control of an intelligent engine. A pressure analog signal measured by a piezoresistive pressure sensor and a temperatureanalog signal measured based on thermal resistance are shaped and filtered through a signal processing unit; AD acquisition of pressure and temperature analog signals is realized through a ZYNQ-basedintelligent computing unit, and hardware resources are provided for dimensional transformation of the temperature and pressure signals, temperature-based pressure signal correction and fault diagnosisof a pressure sensor; tTP bus communication of the digital signals of the pressure sensors is realized through the communication unit, so that other nodes in the distributed control system can acquire the pressure digital signals from the TTP bus. The intelligent pressure sensor based on ZYNQ design is light in weight and convenient to maintain, hardware adopts a dual-redundancy scheme to meet reliability, communication adopts an FPGA to guarantee communication real-time performance, the transmission bandwidth is high, the fault-tolerant capability is high, the bus utilization rate is high, and the requirements of an aero-engine distributed control system are met.

Description

technical field [0001] The invention relates to an intelligent pressure sensor system for intelligent engine distributed control, which belongs to the field of aero engine control. Background technique [0002] Existing aero-engines cannot cope with the ever-changing environmental conditions of aero-engines, resulting in high costs for design, use, and maintenance. An intelligent engine is an engine that can re-plan, optimize, control and manage its own performance, reliability, mission, health and other conditions according to the external environment and its own state through an intelligent control system throughout its lifespan. At present, the main key technologies of aviation intelligent engines include: active control technology, distributed control technology, integrated low-observation inlet and nozzle technology, etc. [0003] Among them, the distributed control technology of aero-engine is very different from the traditional centralized control technology of aero-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L23/22F02C9/00F01D21/00
CPCF01D21/003F02C9/00G01L23/221
Inventor 潘慕绚刘杨琳黄金泉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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