基于虚拟仪器的电梯导轨多参数测量系统

提出了一种基于虚拟仪器平台的电梯导轨多参数测量系统，系统中采用基于位置敏感探测器(PSD)的激光准直测量技术，实现了对导轨弯曲、失调、接口处台阶等参数的测量：采用双电感传感器差动测量法实现了对两列导轨间距变化的测量；采用数字量接近传感器实现了对导轨接头及支架的位置的准确测量，在软件设计中．应用COM技术将LabVIEW与MATLAB相结合构成功能强大的虚拟仪器开发平台，实现了整个测量系统的集成化和自动化．现场试验证明，该测量系统可以高效、准确地完成对电梯导轨的多参数测量任务．导轨表面形状误差的测量标准偏差在70m的测量范围内为0．3mm。

Virtual Instrument Based Multi-Parameter Measuring System for Elevator Rails

A virtual instrument based multi-parameter measuring system for elevator rails is proposed. In this system, a laser collimating measurement technique based on position sensitive detector (PSD) is used to mea-(sure) the elevator rail errors, such as bowing, misalignment and step at the rail joint; a differential measurement method using two inductive transducers is used to determine the distance variance between two guide rails; di-(gital) proximity switches are used to test the position of rail joints and brackets.In the process of software designing, a powerful development environment is established by combining LabVIEW and MATLAB with COM technique, which makes the system integrated and automatic. The in situ experiments prove that the measuring system can realize the multi-parameter test efficiently and accurately. The standard deviation of rail surface displacement measurement is 0.3 mm for an elevator travelling up to 70 m.