摘要
研究了超声波测量地铁隧道通风排烟风机排气量的测量方法。系统结构分为两部分:发射端与接收端,发射端采用一只超声波传感器发射连续的超声波信号,接收端采用两只超声波接收器接收信号。该系统以LPC2131为核心处理器,结合改进的哥拉布斯准则对采集到的信号进行数字滤波处理、以提高测量精度。
In this paper, Research on ultrasonic measurement of subway tunnel ventilation exhaust fan exhaust measurement method. The system structure is divided into two part： transmitter and receiver. Transmittter uses an ultrasonic sensor transmitter transmitting a continuous ultrasonic signal and receiver uses two ultrasonic receiver receive signals. The system use LPC2131 as the core processor,with the improved Grubbs processing the collected signal by filter,to improve the measurement accuracy.
出处
《电子设计工程》
2011年第24期136-139,共4页
Electronic Design Engineering
关键词
超声波
排气量
风速
哥拉布斯
ultrasonic
displacement
wind speed
Grubbs
