测速仪校准装置的改造设计  

Modification design of calibration apparatus for velocimeters

作　　者：冯天宇 FENG Tianyu(Liaoning Provincial Institute of Measurement,Liaoning 110004,China)

机构地区：[1]辽宁省计量科学研究院,辽宁沈阳110004

出　　处：《工业计量》2025年第1期39-41,共3页Industrial Metrology

基　　金：2022年辽宁省自然科学基金联合基金(2022-NLTS-12-05);辽宁省检验检测认证中心第三批青年人才创新创业项目(SC202331)。

摘　　要：测速仪校准装置是辽宁省计量科学研究院自主研发的用于测量机动车测速仪和非接触测速仪的标准装置,该装置只能通过设置电机的脉冲频率来输出标准速度,在上位机上没有速度实时显示功能,无法获取该装置的当前速度值,在电机速度不准的情况下,会造成测量误差。针对以上问题,文章提出了一种改造方案,通过采集伺服电机反馈的脉冲信号,在PLC中计算出标准速度值,并在上位机实时显示。增加了参数设置功能,可设置校准点个数,每个校准点可分别设置速度值和电机的加减速时间,实现了记录数据和查看数据的功能。该改造方案提升了测速仪校准装置的测量精度,提高了工作效率。In this study,we address challenges associated with the velocimeter calibration apparatus developed by the Liaoning Provincial Institute of Measurement.This apparatus,designed for measuring both vehicle velocimeters and non-contact speed detectors,lacked real-time speed display on the host computer and relied solely on adjusting the motor's pulse frequency for standard speed output.This limitation resulted in measurement errors when the motor speed was inaccurate.To overcome these issues,we propose a modification solution.By capturing pulse signals from the servo motor feedback,the PLC calculates standard speed,enabling real-time display on the host computer.Additionally,our modification intro-duces parameter settings,allowing users to define calibration points with customizable speed values and motor acceleration/deceleration times.This enhancement facilitates data recording and viewing capabilities,significantly improving the measurement accuracy of the velocimeter calibration apparatus and enhancing work efficiency.

关 键 词：改造 测速仪 校准装置 上位机 

分 类 号：TH824[机械工程—仪器科学与技术]