【作者】 陶德慧；

【导师】 翟传润；

【作者基本信息】 上海交通大学 ， 导航、制导与控制， 2007， 硕士

【摘要】 本文是以磁浮列车上的悬浮间隙测量传感器为研究对象,在借鉴国外先进技术的基础上进行的自主研发。悬浮间隙传感器是一种组合式、多功能传感器。它用于测量磁浮列车的各种运行参数,包括:间隙、速度、加速度、温度,并将测量结果发送给运行控制单元。整个传感器由壳体、涡流线圈及信号处理板组成。本传感器利用电涡流测距原理进行间隙及速度的测量,传感器的涡流线圈和导轨之间的相对位置发生变化时会导致电涡流的强弱、分布随之变化,通过检测这种变化就可以获得传感器相对导轨的位置变化。加速度测量则采用专门的加速度传感器来实现,具有速度快、精度高、安装方便、性能可靠的优点。温度敏感元件选用了高精度的金属铂热敏电阻,它作为环形振荡电路的可调参数,简化了电路设计和调试,方便地实现了温度测量。在信号处理方面,本文采用了当前流行的现场可编程逻辑阵列(FPGA)芯片。采用Verilog HDL编程语言实现FPGA软件的设计调试和芯片的功能验证。更多还原

【Abstract】 The object of the research is the Suspension Sensor . On the basis of advanced foreign technology for reference, we developed the sensor independently, which makes significant practice for learning the advanced technology.Suspension Sensor is used for measuring the operating parameters, including gap, velocity, acceleration and temperature, and transmit the results to the control unit. The sensors are composed of body case, coil card and signal processing board. Gap and velocity are measured by utilizing electric eddy current effect. The alteration of the position between coil card and trail will result in the changes of the intensity and distribution of eddy current. The position will be decided by detecting the sort of changing. The measurement for acceleration is performed by the special accelerator that has the advantage of high speed, high precision, easily mounting and good reliability. We used the platinum thermal resistor as temperature sensitive element, which is used as a adjustable parameter for ring multivibrator. The method simplified the design and adjust of the circuit.As to the digital design, we used the prevailing device-Field Programmable Gate Array(FPGA). The software design and validation is performed by Verilog HDL, by which improved the developing efficiency.更多还原