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Bayesian Information for Sensors

Eves, Christophe, Wang, Xue, Walker, Stephen G. (2014) Bayesian Information for Sensors. Quality and Reliability Engineering International, 31 (8). pp. 1717-1724. ISSN 0748-8017. (doi:10.1002/qre.1704)

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An engineering company manufacturing high precision sensors had accumulated huge historical databases of information on a type of sensors which had been tested. The aim of the company was not to use this historical data to improve estimation of future individual sensor parameters, but rather to use it to reduce the number of measurements needed per sensor, guaranteeing a required level of accuracy. In the paper we show how this can be done, using Bayesian ideas, and introduce the novel theory for linear regression models which determines how the reduction in individual sensor measurements can be achieved. Specifically, for estimating parameters of closely related sensors, an estimate can be thought of as comprising a global component, i.e. the mean of all the sensors, and a local component, which is a shift from the mean. The historical data can, in a Bayesian framework, provide the global component and hence all that is needed from an individual sensor is the local component. In non-Bayesian estimation methods, both components are required and hence many measurements are needed. On the other hand, with Bayesian methods, only the local fit is needed and hence fewer measurements per sensor are required. We provide the supporting theory and demonstrate on a real-life application with real data.

Item Type: Article
DOI/Identification number: 10.1002/qre.1704
Uncontrolled keywords: Bayesian Model Fitting; Estimation Accuracy; Measurement Reduction; Resonator Density Sensor;
Subjects: Q Science > QA Mathematics (inc Computing science) > QA276 Mathematical statistics
T Technology > TA Engineering (General). Civil engineering (General) > TA166 Instrumentation
Divisions: Faculties > Sciences > School of Mathematics Statistics and Actuarial Science > Statistics
Depositing User: Xue Wang
Date Deposited: 27 Oct 2016 14:41 UTC
Last Modified: 29 May 2019 18:04 UTC
Resource URI: (The current URI for this page, for reference purposes)
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