【摘 要】
：
On the flaws of an existing tape extensometer,this article discusses a PDA measuring system for tunnels convergence deformation based on a tape extensometer.It utilizes the wireless PDA and photoelect
【机 构】
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Lab.of Tunnel and Underground Eng.,China Railway Southwest Research Institute,Chengdu,China
【出 处】
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The 2nd International Conference on Structural Health Monito
论文部分内容阅读
On the flaws of an existing tape extensometer,this article discusses a PDA measuring system for tunnels convergence deformation based on a tape extensometer.It utilizes the wireless PDA and photoelectric control,through recording data and controlling the instrument accurately by using a PDA,to realize a quick measuring work with blind reading and no recording.
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