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Method of manufacturing an anemometer used for determining a fluid flow
US9851372B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9851372-B2 |
| Application number | US-201514883164-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 14, 2015 |
| Priority date | Nov 14, 2011 |
| Publication date | Dec 26, 2017 |
| Grant date | Dec 26, 2017 |
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Abstract
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An anemometer and method for analyzing fluid flow is described. In one embodiment, a transistor sensor is heated by applying power to cause its base-emitter junction to rise from an ambient first temperature to a second temperature. The power is removed, and the Vbe is measured at intervals as the junction cools. The Vbe equates to a temperature of the junction. The temperature exponentially decreases, and the time constant of the decay corresponds to the fluid flow velocity. A best fit curve analysis is performed on the temperature decay curve, and the time constant of the exponential decay is derived by a data processor. A transfer function correlates the time constant to the fluid flow velocity. The transistor is thermally coupled to a metal rod heat sink extending from the package, and the characteristics of the rod are controlled to adjust the performance of the anemometer.
First claim
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What is claimed is: 1. A method of manufacturing an anemometer used for determining a fluid flow comprising: providing a temperature sensor having electrical characteristics that vary with temperature, the temperature sensor being thermally coupled to a metal base; and providing a metal rod having one end configured for attachment to the base, the entire rod having a mass, wherein providing the rod comprises: calculating the mass of the rod needed to achieve a desired reaction…
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- What does patent US9851372B2 cover?
- An anemometer and method for analyzing fluid flow is described. In one embodiment, a transistor sensor is heated by applying power to cause its base-emitter junction to rise from an ambient first temperature to a second temperature. The power is removed, and the Vbe is measured at intervals as the junction cools. The Vbe equates to a temperature of the junction. The temperature exponentially de…
- Who is the assignee on this patent?
- Linear Tech Corp
- What technology area does this patent fall under?
- Primary CPC classification G01P5/10. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 26 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).