摘要
介绍了煤矿瓦斯抽采监测常用流量计的各种优缺点,基于时差法超声波流量检测原理,采用40 k Hz超声波换能器和CX20106A集成红外信号接收芯片对超声波信号进行处理,并利用高速ARM芯片计算超声波飞行时间,设计了矿用管道式超声波气体流量计,相对误差小于4.0%、流速下限低至0.2 m/s,且无压损,是解决煤矿瓦斯抽采监测的理想仪器,具有良好的现场表现和环境适应性。
The various advantages and disadvantages of the flow meter utilized for the CMM monitoring was introduced,based on the transit-time ultrasonic flow detection principle,40 k Hz ultrasonic transducer and CX20106 A integrated infrared receiver chip were used to process ultrasonic signal and the high-speed ARM chip was used to compute ultrasonic flight time.Pipeline ultrasonic gas flowmeter for coal mine was designed,it achieves the relative error of measurement less than 4.0%.Velocity limit is as low as 0.2 m/s.and there is no pressure loss.It is the ideal instrument to solve the coal mine gas drainage monitoring with the characteristics of good field performance and environmental adaptability.
出处
《仪表技术与传感器》
CSCD
北大核心
2017年第3期54-57,共4页
Instrument Technique and Sensor
