带ID号的数字化应变传感器子系统总线驱动控制器的研究与实现

发布时间：2018-04-18 01:28

本文选题：XY·CN总线 + LwIP　；参考：《西安电子科技大学》2015年硕士论文

【摘要】：在如今的飞机强度静力测试系统当中,仍然采用模拟信号远传的集中式测量方法,使用大量的应变片采集机体表面的形变量数据,在应变片数量较多且分布密集的情况下,需要大量的线缆连接应变片才能工作,有时候甚至需要上万根线缆,给测试现场的布局布线带来了极大的麻烦,而且还容易出现人为的连接错误。为了减少现场布局布线的复杂性,本论文提出了新的解决方案,由智能的终端节点使用应变片采集机体表面的形变量,总线驱动控制器使用两线制串行总线,一方面解决总线驱动控制器和终端节点的数据传输问题,另一方面解决终端节点的供电问题。本论文的研究内容是设计带有7路两线制接口的总线驱动控制器,总线驱动控制器能够将终端节点采集的形变量数据通过以太网传输到服务器,同时,增加了时间同步功能,给测量数据都增加了时间信息。本论文中使用的两线制总线为XY·CN总线,可以同时解决节点的供电和数据传输问题,而且在终端节点连接到XY·CN总线的两根线缆上时,不用区分极性,这样可以有效的减少人为的连接错误。XY·CN总线在传输数据时使用异步串行通信的数据格式。本系统使用的主控制器为基于ARM Cortex M4架构的TM4C1294NCPDT,利用TM4C1294NCPDT微控制器的以太网功能结合嵌入式以太网协议栈LwIP,把总线驱动控制器设计为TCP/IP客户端,将终端节点的数据以以太网数据包的形式上传到局域网的服务器。
[Abstract]:In today's aircraft strength static test system, the centralized measurement method of analog signal transmission is still used. A large number of strain gauges are used to collect the shape variable data of the body surface. In the case of a large number of strain gauges and dense distribution,It requires a large number of cable to connect strain gauges to work, sometimes even tens of thousands of cables, which brings great trouble to the layout and wiring of the test site, but also prone to human connection errors.In order to reduce the complexity of field layout and wiring, a new solution is proposed in this paper. The intelligent terminal node uses strain gauges to collect the shape variables of the body surface, and the bus driver controller uses a two-wire serial bus.On the one hand, it solves the data transmission problem of bus driving controller and terminal node, on the other hand, it solves the power supply problem of terminal node.The research content of this paper is to design a bus driver controller with 7 channels two-wire interface. The bus driver controller can transmit the data of shape variables collected by terminal nodes to the server via Ethernet. At the same time, the function of time synchronization is added.Time information is added to the measurements.The two-wire bus used in this paper is XY CN bus, which can solve the problem of power supply and data transmission of the node simultaneously, and when the terminal node is connected to the two cables of the XY CN bus, there is no need to distinguish polarity.This can effectively reduce the artificial connection error. XY CN bus in the transmission of data using asynchronous serial communication data format.The main controller used in this system is TM4C1294NCPDTbased on ARM Cortex M4 architecture. With the Ethernet function of TM4C1294NCPDT microcontroller and the embedded Ethernet protocol stack LwIP, the bus driver controller is designed as TCP/IP client.The terminal node data is uploaded to the LAN server in the form of Ethernet packets.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V216.8

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