|Wireless remote data
Technologies and sample systems that gather sensor data across distances, usually via radio links. This includes general telemetry and SCADA (supervisory control and data acquisition), especially for gathering data about wildlife, natural resources, and distributed energy systems.
Ken Novak's Weblog
Friday, July 30, 2004
High Noon for High Range Wireless
: The WiFi Shootout in the Nevada desert, at DefCon this weekend (July 30-31, 2004). Sounds like geek fun, and it'll be interesting to see what they cook up. 10:40:45 AM
Thursday, July 29, 2004
GFS Tactical Radio Comms: Application of Groove to emergency group voice comms, at the Strong Angel 2 exercise: "Groove 3.0 feature called Groove Folder Sync (GFS). With Groove 3.0 installed, GFS allows one to share a Windows file system folder with another Groove user without using a shared space as the container. One of the requirements at Strong Angel was to demonstrate how tactical radio communications could be extended to other continents. ..
As police, fire, and other first responder communications came in across the radios, [their voices] would be trapped and converted into MP3. The files were then dropped into a GFS folder which immediately synchronized GFS folders in Baghdad, Washington, and other parts of the globe.
I constructed a .NET app that would monitor folder events and then play these MP3's as they came in. It mimicked a police scanner. A civil affairs soldier sitting in Baghdad could then hear the actual tactical communications as they came in from our exercise in Hawaii." 9:20:46 AM
Tuesday, July 27, 2004
From woks to wifi:
"Make 2.4GHz parabolic mesh dishes from cheap but sturdy Chinese cookware scoops & a USB WiFi adaptor ! The largest (300mm diam)shows 15-18dB gain (enough for a LOS range extension to 3-5km), costs ~US$5" 11:55:32 PM
Sunday, July 25, 2004
WIFI and Route Security
: In Strong Angel 2, they tested use of WiFi to aircraft, and among cars in a convoy. The aircraft test had problems, but the car-to-car test worked over 1.5 miles, with streaming video and voice, all p2p with no servers. Interesting app for NGO and military supply convoys. 8:23:38 AM
Thursday, July 22, 2004
LocustWorld Mesh Access Points: "The MeshBox is a box about the size of a small video recorder. It has a number of ports for connecting other devices and one or more on-board WiFi radios. It is a multi-purpose device, but its core function is creating wide area wireless broadband. This means that each MeshBox communicates with other MeshBoxes nearby and the internet signal is passed from one box to the next, over the air, until it reaches the final destination. ..
There are no plans to commercialize the core LocustWorld MeshAP device, this will always be available to download from the website as an open product. "
It's a linux application. The standard box has Prism2 wireless, 32mb CF boot media, 128mb ram, 500mhz CPU. Small form-factor and battery-powered boxes available. Example hardware models: standard, outdoor (each about $400). 11:08:10 PM