By the introduction of cross-correlation technology and ultrasonic transducer, the ultrasonic flow measurement system can be developed, and the un-contact flow measurement of two-phase flow can be realized, therefore the research of the ultrasonic cross-correlation flowmeter is a subject that has great significance 以互相关技术为基础,采用超声波换能器构成超声流量测量系统,可以实现两相流的非接触测量,因而超声相关流量计的研究是一项有重大意义的课题。
Based on the principle of the ultrasonic cross-correlation flowmeter, the key factor of the development of cross-correlation flowmeter, namely the design of cross-correlator, is analyzed in the paper . digital signal processing is introduced to design the flowmeter, the cross-correlation operation of random noise signal is dealt with inside the frequency field, and the digital cross-correlator is designed 本文从超声相关流量计的工作原理出发,分析了超声相关流量计研制的关键因素,即相关器的设计,并将数字信号处理技术引入了超声相关流量计的设计,在频域内对流动随机噪声信号进行相关处理,构造了数字相关器。
Based on the principle of the ultrasonic cross-correlation flowmeter, the key factor of the development of cross-correlation flowmeter, namely the design of cross-correlator, is analyzed in the paper . digital signal processing is introduced to design the flowmeter, the cross-correlation operation of random noise signal is dealt with inside the frequency field, and the digital cross-correlator is designed 本文从超声相关流量计的工作原理出发,分析了超声相关流量计研制的关键因素,即相关器的设计,并将数字信号处理技术引入了超声相关流量计的设计,在频域内对流动随机噪声信号进行相关处理,构造了数字相关器。