摘要
介绍了用于低流速测量的热阻式流速仪的硬件和软件的设计.通过实验验证了仪器具有较高灵敏度和精度的特点.当流体流速在15～30 cm/s时,分辨率可达0.1 cm/s.适合于河工模型试验中对流速的测量.
The design feature of the circuit and the software of hot resistance mode flowing velocity instrument were introduced. It can be used in measuring low velocity of water flow. By means of test, it is proved that the instrument makes features of high sensitity and high precision.When velocity of water flow is from 15 to 30 cm/s,resolving power of the instrument is 0.1 cm/s. The instrument can meet the demands of measuring velocity of river engineering mode.
出处
《仪表技术与传感器》
CSCD
北大核心
2005年第11期20-21,26,共3页
Instrument Technique and Sensor
关键词
单片机
热电阻
流速
恒流
MCU
Hot Resistance
Velocity of Flow
Constant Current
