Towards improved characterization of high-risk releases using heterogeneous indoor sensor systems

Date Published
02/2011
Publication Type
Journal Article
Authors
DOI
10.1016/j.buildenv.2010.08.006
Abstract

The sudden release of toxic contaminants that reach indoor spaces can be hazardous to building occupants. For an acutely toxic contaminant, the speed of the emergency response strongly influences the consequences to occupants. The design of a real time sensor system is made challenging both by the urgency and complex nature of the event, and by the imperfect sensors and models available to describe it. In this research, we use Bayesian modeling to combine information from multiple types of sensors to improve the characterization of a release. We discuss conceptual and algorithmic considerations for selecting and fusing information from disparate sensors. To explore system performance, we use both real tracer gas data from experiments in a three story building, along with synthetic data, including information from door position sensors. The added information from door position sensors is found to be useful for many scenarios, but not always. We discuss the physical conditions and design factors that affect these results, such as the influence of the door positions on contaminant transport. We highlight potential benefits of multisensor data fusion, challenges in realizing those benefits, and opportunities for further improvement.

Journal
Building and Environment
Volume
16
Year of Publication
2011
Issue
2
Pagination
438-447
Refereed Designation
Refereed
Keywords
Organizations
Research Areas
Download citation