智能检测装备的高速通讯鲁棒性研究

发布时间：2018-06-12 08:07

本文选题：智能检测装备 + 高速CAN总线通讯　；参考：《浙江大学》2013年硕士论文

【摘要】：论文以智能检测装备中的高速CAN总线通讯鲁棒性为研究对象,分析了相关领域的国内外研究现状,结合工程实际应用,详细分析了高速CAN总线通讯在恶劣工作环境中收到的干扰信号以及影响,重点提出若干有效抗干扰措施,改进了高速CAN总线通讯模型的软硬件设计并在实际工程中进行了初步验证。为了满足智能检测装备高速通讯的要求,提出通讯系统性能综合评价指标。针对智能检测装备高速CAN通讯的干扰问题,结合小波多分辨分析以及阈值滤波的高速CAN通讯总线信号消噪方法,利用小波多分辨分析时频局部化分析的特点,对智能检测装备中受到干扰的CAN通讯信号进行分解、降噪和重构,根据其原理建立相应的小波分解、阈值降噪和小波重构模块对信号进行降噪处理。结果表明小波多分辨分析的消噪方法是有效的,既保证了原始信号又消除了干扰,同时便于在设备状态检测中对干扰的分析、预测和控制,有利于提高智能检测装备高速通讯的鲁棒性。结合工程实际应用设计了CAN总线应用层协议,利用总线开发工具CANoe对应用层协议进行性能验证仿真,分析不同总线设置参数对总线负载的影响,确定智能检测装备中CAN总线网络的软硬件设计参数,结果表明高速CAN总线通讯设计方案的合理性。
[Abstract]:This paper takes the high speed can bus communication robustness of intelligent detection equipment as the research object, analyzes the domestic and foreign research status in related fields, and combines the practical application of engineering. The interference signal and influence of high-speed can bus communication in bad working environment are analyzed in detail, and some effective anti-jamming measures are put forward. The hardware and software design of high speed can bus communication model is improved and verified in practical engineering. In order to meet the requirement of high speed communication of intelligent detection equipment, a comprehensive evaluation index of communication system performance is put forward. Combined with wavelet multi-resolution analysis and threshold filtering method for high-speed can bus signal de-noising, using the characteristics of wavelet multi-resolution analysis time-frequency localization analysis, the interference can communication signal in intelligent detection equipment is decomposed. The corresponding wavelet decomposition, threshold denoising and wavelet reconstruction module are established according to the principle of noise reduction and reconstruction. The results show that the wavelet multiresolution method is effective, which not only guarantees the original signal but also eliminates the interference, and is convenient to analyze, predict and control the interference in the state detection of equipment. It is beneficial to improve the robustness of high speed communication of intelligent detection equipment. Combined with practical engineering application, can bus application layer protocol is designed, and the performance verification simulation of application layer protocol is carried out by using CANoe, a bus development tool. The influence of different bus setting parameters on bus load is analyzed, and the hardware and software design parameters of can bus network in intelligent detection equipment are determined. The results show that the design scheme of high-speed can bus communication is reasonable.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP336;TN911.7;TP274.5

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