17-03-2014, 06:47 PM
Abstract
With a widely deployed RFID middleware system
either in companies or manufactories, large volumes of
collected data can be integrated into enterprise
information management system. By combing the
technique of Web services, RFID information flow can
be exchanged between different information platforms
under the universal XML format. However the
performance of data transmission causes great
concern of researchers. Several methods and strategies
have been proposed to improve it. In this paper, we
design a Context-Store and apply it to the exchange
process of SOAP messages between mobile terminal
and server. Experiments show our approach has
reduced the average response time compared with the
previous methods. Moreover, in the manufactory, with
the improved Web Services-based RFID middleware
system, the production efficiency greatly increases.
1. Introduction
Radio Frequency Identification (RFID) is a kind of
Auto-Recognition technology that allows RFID reader
to read data from RFID tags via radio signals from a
distance and without line of sight. With significant
technology advantages over bar code identification
systems, RFID has been gradually adopted and
deployed in a wide range of applications, such as
access control, item tracking, highway tolls, production
line auto-management, supply chain management and
so on. A typical RFID system consists of tags
(transponders), readers, antennas embedded both in
tags and readers.
RFID middleware is system software that collects a
large volume of raw data from heterogeneous RFID
devices, filters them and summarizes them into
meaningful information, delivers this information to
applications and makes them interoperate with legacy
systems [1]. Therefore the basic functions of RFID
middleware are supporting the independency of the
multi-protocol of heterogeneous readers and playing
the role of a broker for data exchange.
A typical RFID middleware has such abstract
framework as shown in figure 1. The Hardware
Interface directly communicates with RFID readers
and other terminal devices. The middle layer is
responsible for data management and data
transmission， such as filtering data, analyzing data
and handle data. The Application Interface provides
friendly access interface for up layer applications
including various enterprise and its partners. For
instance, we can invoke Web services in this Interface
to accomplish broader applications.
With a widely deployed RFID middleware system
either in companies or manufactories, large volumes of
collected data can be integrated into enterprise
information management system. By combing the
technique of Web services, RFID information flow can
be exchanged between different information platforms
under the universal XML format. However the
performance of data transmission causes great
concern of researchers. Several methods and strategies
have been proposed to improve it. In this paper, we
design a Context-Store and apply it to the exchange
process of SOAP messages between mobile terminal
and server. Experiments show our approach has
reduced the average response time compared with the
previous methods. Moreover, in the manufactory, with
the improved Web Services-based RFID middleware
system, the production efficiency greatly increases.
1. Introduction
Radio Frequency Identification (RFID) is a kind of
Auto-Recognition technology that allows RFID reader
to read data from RFID tags via radio signals from a
distance and without line of sight. With significant
technology advantages over bar code identification
systems, RFID has been gradually adopted and
deployed in a wide range of applications, such as
access control, item tracking, highway tolls, production
line auto-management, supply chain management and
so on. A typical RFID system consists of tags
(transponders), readers, antennas embedded both in
tags and readers.
RFID middleware is system software that collects a
large volume of raw data from heterogeneous RFID
devices, filters them and summarizes them into
meaningful information, delivers this information to
applications and makes them interoperate with legacy
systems [1]. Therefore the basic functions of RFID
middleware are supporting the independency of the
multi-protocol of heterogeneous readers and playing
the role of a broker for data exchange.
A typical RFID middleware has such abstract
framework as shown in figure 1. The Hardware
Interface directly communicates with RFID readers
and other terminal devices. The middle layer is
responsible for data management and data
transmission， such as filtering data, analyzing data
and handle data. The Application Interface provides
friendly access interface for up layer applications
including various enterprise and its partners. For
instance, we can invoke Web services in this Interface
to accomplish broader applications.