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System and method for measuring fluid flow velocity with a heater for generating a thermal marker in response to a time-varying level of power
System and method for measuring fluid flow velocity with a heater for generating a thermal marker in response to a time-varying level of power
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机译:用于响应于功率的时变水平而利用加热器来测量流体流速的系统和方法,该加热器用于生成热标记
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摘要
The invention relates to a system (102) for measuring a velocity of a fluid (104) flowing through a flow channel (106). The system comprises a heating element (108) configured for generating a thermal marker in the fluid (104) in response to a predetermined time-varying level of power provided to the heating element (108). The system (102) furthermore comprises a sensor arrangement (110) for generating a measurement signal (112) indicative for the velocity of the fluid (104) flowing through the channel (106). Herein, the sensor arrangement (110) is configured for measuring a time series of the primary temperature (114) of the fluid (104) at a predetermined primary location. The primary location and the heating element (108) are situated on an axis having at least a component parallel to the longitudinal axis (119) of the flow channel (106). The measurement signal (112) is based on the maximum value (120) of the time series of time series of the primary temperature (114) in response to the thermal marker.
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