Smart-Talk Database Schema for Innovative Sensor Modeling

The Smart-Talk database schema incorporates and supports standard open architecture and a set of basic services for in situ sensor integration of all kinds of sensors, sensor networks, and other sensor-like services. It aims to improve the interoperability of in situ sensors and sensor networks and to allow quick and cost-efficient reuse of data and services from currently incompatible sources for future asset tracking management applications.

Although the Smart-Talk database schema addresses interoperability in monitoring sensor networks in general, it focuses on telemetry data, RFID and hybrid tag reconciliation, and embedded data extraction during asset tracking monitoring scenarios.

Core Concepts and Components

The core of the Smart-Talk database schema design is a collection of modeled SOAP services for uniform access to heterogeneous repositories of industrial site-survey observation data. SOAP is a protocol for exchanging XML-based messages over computer networks and has been extended through the introduction of two SOAP syntax modifications known as STSML and STXML.

SOAP forms the foundation layer of the Web services stack. This database driven stack provides a basic messaging framework that additional abstract layers can be built on. The services follow a common XML messaging schema named Smart-Talk, which includes constructs for transmitting observation values and time series, as well as observation metadata including information about sites, variables, battery life of wireless components and networks.

Smart-Talk Sensor Model Language (STSML) is a standard model and XML schema with Smart-Talk features added for describing sensors systems and processes; providing information needed for  discovery of sensors, location of sensor observations, processing of low-level sensor observations, and listing sensor system operations that can be invoked by a client process.

Smart-Talk Transducer Markup Language (STXML) is a conceptual model of XML schema for describing transducers and supporting real-time streaming of data to and from database schemas and to and from sensor systems.

Coordination with Other Sensor Standards Efforts

There is an active coordination program embedded in the database schema that works with inputs from many other standards groups and has been active in the Sensor Standards Harmonization activity led by the National Institute of Standards and Technology (NIST). The overall goal is to integrate sensor and non-sensor data in a decision support database driven network.”

The Smart-Talk specification is currently making its way into a discussion paper   that will become available to future designers as soon as several ad-hoc team members conclude their design and test assignments.

The following may be of use to you for design thought starters:

(1) Confusing MAV Optic Flow Sensors In flight Using Mobiles
(2) RFID Sensors to Protect Water Supplies

Author: Tom Gruich

Tags:Business,Database,design,gps,software,technology

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