ABSTRACT
Internet of things,the physical information of the real world by sensing devices is
sended to the data center for processing through a variety of network trasmisson, availb-
le to the user on the client.The diversity of the types of physical data,resulting in a dive-
rsity of sensing devices,enhances the data format heterogeneity by sensing devices coll-
ectted,so the difficulty of sensor data collection in the Internet of Things is increased.In
this paper, to the problem of heterogeneity of the sensor data in the Internet of things,
make the following research:
(1) In this paper, various types of physical devices to access and respond to operating
features of the abstraction, design abstract logical gateway, the service module and
command module is divided into two parts; service module is responsible for reading
and forwarding device XML configuration file, as well as to provide device status
information access and forwarding interface; The command module is responsible for
reading and forwarding the command parameters and access remote control commands
to solve the difficult unified network device management.(2)Give a mode of the XML
configuration file management devices accessing. When having an access network
equipment, on the one hand, greatly simplifies the service-si-
de reading information and control parameters of the fixed equipment;on the other ha-
nd,the configuration file management strategy of local database ensure the independen-
ce of data storage module and the reusabllity of the code.(3)After researching a variety
of heterogeneous data sources in IoT, proposes PDCS (the Perception Data Collection
System) to collect and transmit sensor data, in order to achieve a "perception", shielding
the heterogeneity of the data, to simplify program development.(4)Achieve an app of
Android operating system-based that allows users to anytime and anywhere to monitor
environmental data and remote control.(5) Expound how to use the PDCS for the access
control system of a RFID reader application in detail, and conclude experimental results
and analysis.
Key words: IOT, sensor, heterogeneous data, remote control, PDCS