感應器

(由傳感器跳轉過嚟)

基礎概念

${\displaystyle R_{l}=\beta T}$ ${\displaystyle R_{l}}$  係種液體嘅電阻，${\displaystyle T}$  係溫度，${\displaystyle \beta }$  係靠之前實驗搵到嘅一個常數
${\displaystyle I={\frac {V}{R_{l}+R_{0}}}}$ （根據歐姆定律；Ohm's law）；
${\displaystyle R_{0}}$  係股電流通過嘅其他部份嘅電阻（股電流唔淨衹會經過啲液體；假設呢個數值已知），${\displaystyle V}$  係通過個感應器嘅電壓（呢個數值可以輕易量度），${\displaystyle I}$  就係個感應器出嗰股電流。

量度誤差

• 佢對要量度嘅物理量敏感度有返咁上下。
• 佢對佢喺應用上會撞到嘅第啲物理量敏感度低（唔會因為呢啲物理量有變化）。
• 佢唔會影響要量度嘅物理量嘅數值。

文獻

• M. Kretschmar and S. Welsby (2005), Capacitive and Inductive Displacement Sensors, in Sensor Technology Handbook, J. Wilson editor, Newnes: Burlington, MA.
• C. A. Grimes, E. C. Dickey, and M. V. Pishko (2006), Encyclopedia of Sensors (10-Volume Set), American Scientific Publishers. ISBN 1-58883-056-X
• Blaauw, F.J., Schenk, H.M., Jeronimus, B.F., van der Krieke, L., de Jonge, P., Aiello, M., Emerencia, A.C. (2016). Let’s get Physiqual – An intuitive and generic method to combine sensor technology with ecological momentary assessments. Journal of Biomedical Informatics, vol. 63, page 141-149.

攷

1. Bennett, S. (1993). A History of Control Engineering 1930–1955. London: Peter Peregrinus Ltd. on behalf of the Institution of Electrical Engineers. ISBN 978-0-86341-280-6The source states "controls" rather than "sensors", so its applicability is assumed. Many units are derived from the basic measurements to which it refers, such as a liquid's level measured by a differential pressure sensor.
2. Ganesh Kumar (September 2010). Modern General Knowledge. Upkar Prakashan. p. 194.
3. Jihong Yan (2015). Machinery Prognostics and Prognosis Oriented Maintenance Management. Wiley & Sons Singapore Pte. Ltd. p. 107.
4. Dincer, Can; Bruch, Richard; Costa‐Rama, Estefanía; Fernández‐Abedul, Maria Teresa; Merkoçi, Arben; Manz, Andreas; Urban, Gerald Anton; Güder, Firat (2019-05-15). "Disposable Sensors in Diagnostics, Food, and Environmental Monitoring". Advanced Materials: 1806739.