基于FPGA和LoRa的燃烧室振动信号无线测试装置设计  

Design of Wireless Testing Device for Combustion Chamber Vibration Signal Based on FPGA and LoRa

作　　者：王峥岩 洪应平[1] 张会新[1] WANG Zhengyan;HONG Yingping;ZHANG Huixin(North University of China,State Key Laboratory of Electronic Testing Technology,Key Laboratory of Micro/nano Devices and Systems,Ministry of Education)

机构地区：[1]中北大学,电子测试技术国家重点实验室,微纳器件与系统教育部重点实验室

出　　处：《仪表技术与传感器》2024年第3期50-56,共7页Instrument Technique and Sensor

摘　　要：燃烧不稳定性问题可引起大幅的机械振动,严重影响发动机正常工作。为满足新型试验需求,针对传统燃烧室测试装置灵活性不足、可靠性差等问题,设计了一种基于FPGA和LoRa的燃烧室振动信号无线测试装置,以FPGA作为主控单元,将前端高速AD采集的振动传感器数据存入Flash,通过LoRa技术并结合以太网的高速运行,在PC端进行远程操控和数据处理。试验表明:该装置可以实现至少500 m开阔距离内待测燃烧室振动信号的可靠测试,工作稳定,实时性强。Combustion instability can cause large mechanical vibrations,which seriously affects the normal operation of the engine.In order to meet the new test needs,the problems of insufficient flexibility and poor reliability of traditional combustion chamber test devices were addressed.A wireless test device for combustion chamber vibration signal based on FPGA and LoRa was designed,with FPGA as the main control unit,the vibration sensor data collected by the front-end high-speed AD was stored in Flash,and the remote control and data processing were carried out on the PC side through LoRa technology and combined with the high-speed operation of Ethernet.The test shows that the device can reliably test the vibration signal of the combustion chamber to be tested within an open distance of at least 500 m,with stable operation and strong real-time performance.

关 键 词：燃烧稳定性 测试装置 LoRa FPGA 振动信号 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]