18-09-2014, 11:07 AM
WISENET
[attachment=68091]
Introduction:
The technological drive for smaller devices using less power with greater
functionality has created new potential applications in the sensor and data acquisition
sectors. Low-power microcontrollers with RF transceivers and various digital and analog
sensors allow a wireless, battery-operated network of sensor modules (“motes”) to
acquire a wide range of data. The TinyOS is a real-time operating system to address the
priorities of such a sensor network using low power, hard real-time constraints, and
robust communications
The first goal of WISENET is to create a new hardware platform to
take advantage of newer microcontrollers with greater functionality and more features.
This involves selecting the hardware, designing the motes, and porting TinyOS. Once the
platform is completed and TinyOS was ported to it, the next stage is to use this platform
to create a small-scale system of wireless networked sensors
Data Analysis:
This subsystem is software-only (relative to WISENET). It relied on existing
Internet and web (HTTP) infrastructure to provide communications between the Client and Server
components. The focus of this subsystem was to selectively present the collected environmental data
to the end user in a graphical manner.
Data Acquisition:
The purpose of this subsystem is to collect and store environmental data for later
processing by the Data Analysis subsystem. This is a mix of both PC & embedded system software, as
well as embedded system hardware. It is composed of both the Server and Sensor Mote Network
components.
Hardware Design:
The selection of components for the sensor motes is a critical process in
the development of WISENET. Great functionality and low power are two of the highest
priorities in evaluating the fitness of both the microcontroller and the sensor candidates.
WISENET is introduced to the new state-of-the-art Chipcon CC1010 microcontroller
with integrated RF transceiver. After a little research it was decided the CC1010 would
make the perfect microcontroller.
Future Work:
There are a number of future extensions for this WISENET. A few are:
We can expand the sensor mote network by adding more motes. This
would allow the development and testing of advanced network-layer functions, such as
multi-hop routing.
By creating a new PCB design that integrates the CC1010EM design with
the sensors and power hardware on a single-board another interesting feature can be
developed or adopt a standard expandable plug-in sensor interface in both hardware and
software
In researching alternative energy sources to extend mote battery life.
Possibilities include solar cells and rechargeable batteries
Conclusions:
Wireless sensor networks are getting smaller and faster, increasing their
potential applications in commercial, industrial, and residential environments.
WISENET, as implemented, represents one commercial application. However, the limit
of applications depends only upon the sensors used and the interpretation of the data
obtained. As the technology improves and new low-power digital sensors become more
readily available, motes will increase functionality without increasing power
consumption and will expand the wireless sensing market
[attachment=68091]
Introduction:
The technological drive for smaller devices using less power with greater
functionality has created new potential applications in the sensor and data acquisition
sectors. Low-power microcontrollers with RF transceivers and various digital and analog
sensors allow a wireless, battery-operated network of sensor modules (“motes”) to
acquire a wide range of data. The TinyOS is a real-time operating system to address the
priorities of such a sensor network using low power, hard real-time constraints, and
robust communications
The first goal of WISENET is to create a new hardware platform to
take advantage of newer microcontrollers with greater functionality and more features.
This involves selecting the hardware, designing the motes, and porting TinyOS. Once the
platform is completed and TinyOS was ported to it, the next stage is to use this platform
to create a small-scale system of wireless networked sensors
Data Analysis:
This subsystem is software-only (relative to WISENET). It relied on existing
Internet and web (HTTP) infrastructure to provide communications between the Client and Server
components. The focus of this subsystem was to selectively present the collected environmental data
to the end user in a graphical manner.
Data Acquisition:
The purpose of this subsystem is to collect and store environmental data for later
processing by the Data Analysis subsystem. This is a mix of both PC & embedded system software, as
well as embedded system hardware. It is composed of both the Server and Sensor Mote Network
components.
Hardware Design:
The selection of components for the sensor motes is a critical process in
the development of WISENET. Great functionality and low power are two of the highest
priorities in evaluating the fitness of both the microcontroller and the sensor candidates.
WISENET is introduced to the new state-of-the-art Chipcon CC1010 microcontroller
with integrated RF transceiver. After a little research it was decided the CC1010 would
make the perfect microcontroller.
Future Work:
There are a number of future extensions for this WISENET. A few are:
We can expand the sensor mote network by adding more motes. This
would allow the development and testing of advanced network-layer functions, such as
multi-hop routing.
By creating a new PCB design that integrates the CC1010EM design with
the sensors and power hardware on a single-board another interesting feature can be
developed or adopt a standard expandable plug-in sensor interface in both hardware and
software
In researching alternative energy sources to extend mote battery life.
Possibilities include solar cells and rechargeable batteries
Conclusions:
Wireless sensor networks are getting smaller and faster, increasing their
potential applications in commercial, industrial, and residential environments.
WISENET, as implemented, represents one commercial application. However, the limit
of applications depends only upon the sensors used and the interpretation of the data
obtained. As the technology improves and new low-power digital sensors become more
readily available, motes will increase functionality without increasing power
consumption and will expand the wireless sensing market