Overview Sensor Network User Requirements

Copyright © 2007-2009 SANY Consortium Page 42 of 233

4.6. User Requirements

4.6.1 Overview

This section summarizes the use cases of the application processes originally defined by the SANY application subprojects addressing different application domains: - Air Pollution Risks - Management of plant pollution - Sophisticated data control to detect suspicious data - Conduct impact study - Merging data of different types - Odour measurements by field inspection and impact surveillance by real-time modelling - Marine Risks - Oil Spill Trajectory Forecast Scenario - Bathing Microbial Risk and Beach Management Scenario - Short Term Ship Collision Risk Management Scenario - Long Term Ship Collision Risk Management Scenario - Geo Hazards - Monitoring of the area around a tunnel construction - Sensor Network Management - Settlement Monitoring - Landslide Monitoring - Risk Zone Mapping - Rainfall Influence on Landslides An analysis of the use cases has led to a set of requirements that have been grouped into functional blocks as described in the following sub-sections. The specific sensor network requirements are described in the SANY deliverable “Sensor Scenarios and Requirements” Watson and Kunz, 2007 with references to the pertinent application processes and the use cases. The requirements within the blocks are summarised below. Here, the term “SANY system” stands for the entirety of a sensor service network including its architecture and its hardware and software components. Note: The SensorSA only covers a subset of these requirements. The coverage and the tracing of the requirements is documented in Schimak and Watson eds., 2008. SANY D2.3.4 Specification of the Sensor Service Architecture V3 Doc.V3.1 Copyright © 2007-2009 SANY Consortium Page 43 of 233

4.6.2 Sensor Network

- Plug measure type of operation is required. As a requirement it is understood as the degree of capability to add a new sensor node to a sensor and sensor service network without a manual re-configuration of the sensor network or sensor node. - Dependability is required to provide data access and management services, in order to cope with the dynamic availability of possibly redundant sensor data sources, especially in the case of mobile sensors. - Sensor Network management. Of particular interest here is the localisation of sensor nodes, e.g. for the planning and management of their deployment or the configuration of the measurement frequency in order to optimise network and battery load. - Deployment of mobile ad hoc sensor clusters. Especially in the case of biological and chemical hazards, the responsible administration authority needs to measure air pollution or water quality in order to quickly assess the risk situation. However, in the affected area appropriate sensors are often absent. - Self-validation of sensor nodes with regard to residual battery life and measurement capability need for re-calibration or maintenance is important for the assessment of node deployment and data quality. - Battery life optimisation through selective data transmission is a necessary management capability to access the battery information via an interface to sensor nodes with self-diagnosis. It shall support the capability to automatically select alternative transmission routes for data transmission andor the frequency of data transmissions, if the residual battery level of a sensor is too low.

4.6.3 Data and Information