Flow velocity pressure-sensing quantitative measuring instrument

Abstract

The invention discloses a flow velocity pressure-sensing quantitative measuring instrument. Currently, a product in the industry still cannot predict the direction and intensity of a flow accurately and quantitatively, so the invention proposes a flow velocity pressure-sensing quantitative measuring model based on a three-dimensional field. Aiming at a condition that the flow is affected by the viscidity and vortex in the three-dimensional field, the measuring instrument firstly builds a pressure model in the three-dimensional field, and then achieves the measurement of flow velocity with the help of overlapping of homodromous region vector formed by the interaction of multiple points in a cylindrical field constraint space. The measuring instrument comprises a flow velocity pressure-sensing quantitative monitoring system, a wireless transmission system, the cylindrical field constraint space, a power supply, and hand-held mobile terminal equipment. Aiming at supply voltage fluctuation caused by the changes of parameters of a testing environment, the charging and discharging characteristics of the power supply and the precision of a power management module, the measuring instrument eliminates the fluctuation through employing a proportion measurement circuit with an additional sampling resistor, thereby improving the measurement precision of flow velocity vectors. The measuring instrument achieves the display of flow velocity on the hand-held mobile terminal equipment through the wireless communication technology.

Description

technical field [0001] The invention relates to a low-power consumption, portable, and miniaturized wireless flow velocity pressure-sensitivity quantitative measuring instrument based on a single-chip microcomputer, which can be widely used in meteorology, civil aviation, highway, construction, energy and other industries. Background technique [0002] The impact of fluid on our lives is ubiquitous, and flow velocity is an important parameter of fluid, so how to make the measurement of flow velocity more convenient has become an urgent need. At present, common flow rate measurement systems include mechanical, velocity, ultrasonic, differential pressure and other methods. Among them, the mechanical type measures the flow velocity through the force of the fluid on the rotor; the differential pressure type uses the relationship between the pressure difference generated by the fluid flowing through the flow resistance and the flow rate to calculate the flow rate; the velocity ty...

AI Technical Summary

Problems solved by technology

Avoid problems such as voltage instability and flow rate measurement accuracy caused by factors such as power supply charging and discharging characteristics, unstable measurement environment, and the accuracy of the power management module

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