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    • 7. 发明授权
    • Ultrasonic gas measuring device
    • 超声波气体测量装置
    • US5313820A
    • 1994-05-24
    • US24785
    • 1993-03-01
    • Alonzo C. Aylsworth
    • Alonzo C. Aylsworth
    • G01N29/00G01N29/024G01N29/22G01N29/32G01N29/34G01N29/36G01N31/00
    • G01N29/22G01N29/024G01N29/222G01N29/326G01N29/34G01N29/36G01N29/4463G01N2291/012G01N2291/021G01N2291/02809G01N2291/02836G01N2291/02845
    • An ultrasonic gas measuring device including a housing, end walls for the housing, the end walls having a gas inlet and a gas outlet provided therethrough, ultrasonic detecting means provided within the housing means, the ultrasonic means having a transmitter, operatively mounted on one end wall, and a receiver, operatively mounted on the other end wall, arranged at spaced locations within the housing, the housing incorporating gas processing means for dividing the gas flow at least at some instance during its flow through the housing, electronic circuitry functioning to detect and generate a signal in cooperation with the ultrasonic detecting means representative of the concentration of gas passing through the housing, the electronic means also generating a reference signal corresponding to the electronic signal delivered to the ultrasonic means, a phase shift provided within the electronic circuitry and effecting a shift of one of said signals to furnish an aligned phased relationship between the two signals whereby the concentration of the gas passing through the housing as detected by the ultrasonic means can be electronically computed and precisely determined by the said electronic means.
    • 一种超声波气体测量装置,包括壳体,用于壳体的端壁,端壁具有气体入口和设置在其中的气体出口,设置在壳体内的超声波检测装置,超声波装置具有可操作地安装在一端的发射器 壁和接收器,可操作地安装在另一端壁上,布置在壳体内的间隔位置处,壳体结合有气体处理装置,用于至少在其流过壳体的某些情况下将气流分割,电子电路用于检测 并且与超声波检测装置协调地产生表示通过壳体的气体浓度的信号,电子装置还产生对应于传送到超声波装置的电子信号的参考信号,设置在电子电路内的相移和 实现所述信号之一的移位以提供对准的分阶段关系 p之间,由此可以电子地计算并通过所述电子装置精确地确定由超声波装置检测到的通过壳体的气体的浓度。