摘要
为了方便了解乘客在乘坐地铁时所体验到的舒适感,设计了一款小巧、方便实时测量地铁内舒适度的测量仪.采用MATLAB计算地铁运行时的舒适度,通过在成都地铁某号线进行实地数据采集,获得了相应的测量数据,并设计了一款有源二阶低通滤波电路用来处理振动加速度信号,并采用Multisim仿真软件对电路进行频率特性分析.整个测量仪分为上位机和下位机2部分,上位机由MATLAB完成对测试数据的处理和计算,下位机则以STM32F103C8T6为核心完成数据的采集与传输,最后通过将测试值与实际值相比对分析可知,测量仪能够实时测量地铁运行的舒适度,并保证误差在一定范围内,符合预期要求.
To facilitate understanding of the comfort experienced by passengers when they take the subway,a compact measuring instrument for real-time comfort measurement in the subway was designed.MATLAB was used to calculate the comfort level during subway operation.On-site data collection was conducted on a certain line of Chengdu Metro to obtain relevant measurement data.An active second-order low-pass filter circuit was designed to process vibration acceleration signals,and Multisim simulation software was applied to analyze the frequency characteristics of the circuit.The entire measuring instrument consists of two parts:the upper computer and the lower computer.The upper computer uses MATLAB to process and calculate the test data,while the lower computer,with STM32F103C8T6 as its core,is responsible for data collection and transmission.Finally,by comparing the measured values with actual values,it is found that the measuring instrument can measure the comfort of subway operation in real-time,with errors within an acceptable range.The finding meets the expected requirements.
作者
罗凯
莫莉
皮杰斌
杨黄亮
栗世凯
LUO Kai;MO Li;PI Jiebin;YANG huangliang;LI Shikai(School of Mechanical Engineering,Chengdu University,Chengdu 610106,China)
出处
《成都大学学报(自然科学版)》
2025年第4期407-415,共9页
Journal of Chengdu University(Natural Science Edition)
基金
国家自然科学基金项目(42104174)。
关键词
地铁
舒适度
测量仪
subway
comfort level
measuring instrument
