92 research outputs found
Real Time Wireless Air Pollution Monitoring system
Air pollution has
significant influence on the concentration of
constituents in the atmosphere leading to effects like global warming
and acid rains. To avoid such adverse imbalances in the nature, an
air pollution monitoring system is utmost important. This paper
attempts
to develop an effective solution for pollution monitoring
using wireless sensor networks (WSN) on a real time basis namely
real time wireless air pollution monitoring system. Commercially
available discrete gas sensors for sensing concentration of gases l
ike
CO
2
, NO
2,
CO and O
2
are calibrated using appropriate calibration
technologies. These pre
-
calibrated gas sensors are then integrated
with the wireless sensor motes for field deployment at the campus and
the Hyderabad city using multi hop data aggregatio
n algorithm. A
light weight middleware and a web interface to view the live pollution
data in the form of numbers and charts from the test beds was
developed and made available from anywhere on the internet. Other
parameters like temperature and humidity w
ere also sensed along
with gas concentrations to enable data analysis through data fusion
techniques. Experimentation carried out using the developed wireless
air pollution monitoring system under different physical conditions
show that the system collects
reliable source of real time fine
-
grain
pollution data
From Sensor to Observation Web with Environmental Enablers in the Future Internet
This paper outlines the grand challenges in global sustainability research and the objectives of the FP7 Future Internet PPP program within the Digital Agenda for Europe. Large user communities are generating significant amounts of valuable environmental observations at local and regional scales using the devices and services of the Future Internet. These communitiesâ environmental observations represent a wealth of information which is currently hardly used or used only in isolation and therefore in need of integration with other information sources. Indeed, this very integration will lead to a paradigm shift from a mere Sensor Web to an Observation Web with semantically enriched content emanating from sensors, environmental simulations and citizens. The paper also describes the research challenges to realize the Observation Web and the associated environmental enablers for the Future Internet. Such an environmental enabler could for instance be an electronic sensing device, a web-service application, or even a social networking group affording or facilitating the capability of the Future Internet applications to consume, produce, and use environmental observations in cross-domain applications. The term ?envirofied? Future Internet is coined to describe this overall target that forms a cornerstone of work in the Environmental Usage Area within the Future Internet PPP program. Relevant trends described in the paper are the usage of ubiquitous sensors (anywhere), the provision and generation of information by citizens, and the convergence of real and virtual realities to convey understanding of environmental observations. The paper addresses the technical challenges in the Environmental Usage Area and the need for designing multi-style service oriented architecture. Key topics are the mapping of requirements to capabilities, providing scalability and robustness with implementing context aware information retrieval. Another essential research topic is handling data fusion and model based computation, and the related propagation of information uncertainty. Approaches to security, standardization and harmonization, all essential for sustainable solutions, are summarized from the perspective of the Environmental Usage Area. The paper concludes with an overview of emerging, high impact applications in the environmental areas concerning land ecosystems (biodiversity), air quality (atmospheric conditions) and water ecosystems (marine asset management)
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