AC type flowmeter and method of mapping flow rate data for the same
    1.
    发明申请
    AC type flowmeter and method of mapping flow rate data for the same 有权
    交流型流量计及其流量数据的映射方法

    公开(公告)号:US20050044950A1

    公开(公告)日:2005-03-03

    申请号:US10758780

    申请日:2004-01-15

    CPC分类号: G01F1/6986 G01F1/69 G01F1/696

    摘要: The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the resistive heater in relation to a temperature variation of the resistive heater by the AC power, and obtaining a phase lag of the first signal relative to the heat generation in the resistive heater, and an operation unit for calculating a flow rate based on the obtained phage lag. According to the present invention, the flowmeter of the present invention has a wide measurement range and high measurement accuracy with a simple structure.

    摘要翻译: 本发明涉及一种适用于微流量传感器的流量计。 本发明的流量计包括插入流体的电阻加热器,提供给电阻加热器的第一频率的交流电力,以周期性地加热电阻加热器;信号处理单元,用于检测来自电阻加热器的第一信号 通过AC电力对电阻加热器的温度变化,并获得相对于电阻加热器中的发热的第一信号的相位滞后,以及用于基于获得的噬菌粒滞后计算流量的运算单元。 根据本发明,本发明的流量计具有宽的测量范围和高的测量精度,结构简单。

    AC type flowmeter and method of mapping flow rate data for the same
    2.
    发明授权
    AC type flowmeter and method of mapping flow rate data for the same 有权
    交流型流量计及其流量数据的映射方法

    公开(公告)号:US07007549B2

    公开(公告)日:2006-03-07

    申请号:US10758780

    申请日:2004-01-15

    IPC分类号: G01F1/68

    CPC分类号: G01F1/6986 G01F1/69 G01F1/696

    摘要: The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the resistive heater in relation to a temperature variation of the resistive heater by the AC power, and obtaining a phase lag of the first signal relative to the heat generation in the resistive heater, and an operation unit for calculating a flow rate based on the obtained phage lag. According to the present invention, the flowmeter of the present invention has a wide measurement range and high measurement accuracy with a simple structure.

    摘要翻译: 本发明涉及一种适用于微流量传感器的流量计。 本发明的流量计包括插入流体的电阻加热器,提供给电阻加热器的第一频率的交流电力,以周期性地加热电阻加热器;信号处理单元,用于检测来自电阻加热器的第一信号 通过AC电力对电阻加热器的温度变化,并获得相对于电阻加热器中的发热的第一信号的相位滞后,以及用于基于获得的噬菌粒滞后计算流量的运算单元。 根据本发明,本发明的流量计具有宽的测量范围和高的测量精度,结构简单。