基于STM32的坝体水平变形测量仪  

Measurement instrument of dam horizontal deformation based on STM32

作　　者：雷佳科[1] 周云飞[1] 熊欢[2] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074 [2]武汉光电国家实验室,湖北武汉430074

出　　处：《机电工程》2012年第12期1443-1447,共5页Journal of Mechanical & Electrical Engineering

摘　　要：为了准确、高效地测量坝体水平变形量,以实现坝体的安全监测,分析了铅垂线原理,设计了以减速直流电机为驱动元件,激光发射接收装置和高精度光栅尺为测量元件的坝体水平变形量测量装置。控制系统以STM32为处理器,并移植了嵌入式多任务操作系统μC/OS-Ⅱ和多任务图形用户接口μC/GUI,利用TFTLCD触摸屏开发出了人机交互界面,通过操控触摸屏实现了数据的自动测量和手动测量,通过远程上位机管理系统以及利用RS485通信网络发送相关指令完成了数据的测量及收集,通过现场连接USB设备实现了数据的转存。实验结果表明,该仪器能够实现大坝变形测量的自动化和网络化,其测量速度快,测量精度高达0.01 mm,且重复性好。Aiming at measuring the horizontal deformation of a dam accurately and efficiently to help monitoring dam safety, the plumb line principle was analyzed and a measuring instrument which adopted DC geared motor as the driving part and laser transmitters, phototransistors and a high-precision grating scale as the measuring elements was designed. STM32 was chosen as the microprocessor of the control system, multitasking operation systemμC/OS-I1 and multitasking graphical user interface μC/GUI were embedded into the STM32 platform, an interactive interface was designed based on them using TFTLCD touch screen. By means of manipulating the touch screen, the measurement could be accomplished automatically and manually. This manipulation of the touch screen could also be replaced either by measurement, and data collection was completed with the relative instruction from the remote PC management system based on the RS485 interface,or the transference and saving of the data by virtue of connecting the USB equipment at the site. The results indicate that the instrument is networked and can measure the dam deformation automatically and quickly with a good reproducibility.It can attain an accuracy of 0.01 ram.

关 键 词：坝体水平变形量 测量仪 高精度光栅尺 多任务 

分 类 号：TH761[机械工程—仪器科学与技术] TH39[机械工程—精密仪器及机械]