Monday, November 10, 2008

Mobile Sensors

Mobile Sensor Cam

We were asked by a colleague in Environmental Science about using a mobile phone to relay pictures back of one of there remote sites every half hour for hopefully about a month. We have created not only bespoke mobile application that allows any suitable mobile camera phone to be used for functionality but is programmable for a variety of operating parameters time of operation, frequency etc. The resultant images can be viewed as a series of time lapse photographs at the project site

 Mobile sensor cam project in ealy test phase using additional solar panel
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Mobile sensor cam project in ealy test phase using additional solar panel

River Flow Monitoring

River flow monitoring system
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River flow monitoring system

Our influence on the changing natural environment poses many challenges for future generations. One obvious environmental change relates to the increasing regularity of flooding. Monitoring river and stream velocity enables the accurate modelling of flood planes, river bank erosion, and mans influence over the natural environment. The remote monitoring unit developed for this project gives the environmental science community a ‘real time’ cost effective data collection system, freeing up large amounts of time spent out in the field gathering data and eliminating the potential for human error during the recording process. The system incorporates a sensor placed in the river that users Doppler shift to esimate the flow rate of the river. A unit on the bank relays the sensor reading plus a GPS time stamp to a central server using a GPRS connection to the celluar network. With cellular coverage now extended to even the most remote rural of areas systems this project highlights that mass monitoring of stream and river networks is now a practical solution.


Bus ETA

 Application showing ETA of bus at selected stop
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Application showing ETA of bus at selected stop

Whilst it is readily accepted that mobile phones enable users to obtain information quickly and easily in any location, there are a great many ways in which this information can be accessed and provided. Although mobile phone manufacturers are embracing standardization of mobile phone operating systems, as yet there is no clear market leader, which coupled with extremely variable phone feature sets, make porting applications to different platforms a challenging experience. Further to this, is the fact that even within technologically advanced societies large sections of the population are technologically naïve. Thus, the development of information systems that can be accessed by large numbers of the general public from mobile phones, can be problematic, and all too often such systems provide only a single mode access solution, which limits both their acceptance and usefulness. In this project we developed a mobile information system which has been designed so that it can accommodate both the variation in mobile phone features and the technical sophistication of individual users and can be easily deployed for a wide variety of services. The system was demonstrated through an example service which demonstrated information related to the Estimated Time of Arrival (ETA) of vehicles in a metro-bus public transport system. The solution illustrates that information can be provided in different forms, to suit individual users preferences, from the same mobile information system, without significant increases in the underlying infrastructure.

WayCon – your specialist for professional displacement transducers

 

WayCon is a manufacturer of accurat measurement systems and professional sensors for industry and research. We are your contact for all applications in areas of position and distance measurement techniques, level measurements and angel measurements.

 

 

Configure your sensor individually?... then we recommend you contact us for special advise, before you start your application. In particular we can advise on which technology to use for cost effectiveness and desired accuracy.

 

This is why you will not find a catalog with prefabricated stock products, but a product overview with detailed datasheets where you can configure your product individually. We build the equipment to your specification and, if required, even on the same day.

 

Saturday, October 25, 2008

TinyNode

Introducing TinyNode

Shockfish SA has developed the TinyNode platform with real industrial application in mind. Our mission is to bridge results from academic research with industrial needs in the area of wireless sensor networks.

 

The design philosophy of TinyNode is to provide a platform for both academic projects and industrial applications. The TinyNode 584 and TinyNode 184 core module are versatile lowest-power sensor nodes and come with an array of extension hardware offering a wide set of connectivity, storage, energy and interfacing options.





TinyNode 584

The TinyNode 584 is an ultra-low power OEM module that provides a simple and reliable way to add wireless communication to sensors, actuators and controllers.

 

TinyNode 584 is optimized to run TinyOS and packaged as a complete wireless subsystem with 19 configurable I/O pins offering up to 6 analog inputs, up to 2 analog outputs as well as serial interface.





Key Features


Ultra Low Power design
TI MSP430 microcontroller
Fast wake-up from sleep (<6us)
Semtech radio transceiver XE1205
European 868MHz ISM band operation
Adjustable datarates up to 153kbit/s
Range up to 2km
Compact 30 x 40mm
On-board temperature sensor
On-board 512kB flash chip
30 pin board-to-board connector
Analog, digital and serial interfaces
On-board or external antenna options
Out-of-the-box TinyOS support

TinyNode 18


The TinyNode 184 is a state of the art ultra-low power OEM module that

provides a simple and reliable way to add wireless communication to sensors,

actuators, and controllers.

Indeed the 184 serie is the first wireless sensor consuming only 3mA in receive mode

 

TinyNode 184 is optimized to run TinyOS and packaged as a complete wireless subsystem with 19 configurable I/O pins offering up to 6 analog inputs, up to 2 analog outputs as well as serial interface.

 

 





Key features


Ultra Low Power 2.1 V design: > 10 years battery life on 2/3AA Lithium batteries (using 2uA sleep modes)
16MHz Texas Instruments MSP430 microcontroller (MSP430F2417)
868 / 915MHz Semtech SX1211 ultra-low power wireless transceiver (3mA in receive mode, 25mA in transmit mode at +10dBm)
512kB ST m25p40 external flash
On-board 8-pin expansion connector with power supply, 2 ADC channels, interrupt and UART pins
On-board battery connector
Small: 30x40 mm
RF Receiver sensitivity down to -107 dBm
Transmit output power programmable up to +10 dBm, on-board SAW filter Bit rates up to 200kbit/s, NRZ coding
On-board chip antenna, footprint for SMA/MMBX connector
Fast wakeup from sleep (<1µs)
Pin compatible to TinyNode584