|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
Tuesday, May 24, 2005
Samsung Builds Flash Based Disk Drive: "Samsung says it has developed a way to store up to 16GB of data using Flash memory, a development that could lead to extended battery life for notebook and tablet PCs. Flash memory has a power consumption that is five percent of today's hard disk drive, according to the company. These solid-state disk (SSD) Flash-based drives will also provide faster access to data, at about two-and-a-half times the speed of current notebook hard drives. In tests, Samsung was able to read data at 57 megabytes per second (MBps) and write at 32MBps." That's 2-3 GB/Min, comparable in my experience to desktop HD.
"Flash drives also offer the benefit of less noise and heat emissions. They are also less temperature- and humidity-sensitive, meaning Flash-based drives can be used in a wider array of applications and environments. The disk drive itself will look much like a regular 1.8-inch hard disk drive, meaning manufacturers will have to make minimal adjustments to PC designs in order to incorporate the new drives. .. SSD Flash drives based on the new technology are expected on the market by August of this year." They would be useful in off-grid locations, in developing countries or in sensor apps. I wonder if the price will remain at today's $30-50/GB or will be lower. 8:11:30 PM
Monday, May 16, 2005
Soros funds mesh nets:
"The Champaign-Urbana Community Wireless Network (CUWiN) has been awarded a $200,000 grant from the Open Society Institute, funded by the Soros Foundation, to develop wireless technology to be used around the globe, with a focus on developing nations. The result will be the most advanced community wireless technology in the world. " OJC Technologies
is doing the implementation under contract. CUWIN
has released an open source beta: "Imagine a free wireless networking system that any municipality, company, or group of neighbors could easily set up themselves. Over the past half-decade, the Champaign-Urbana Community Wireless Network (CUWiN) has been developing an open source, turnkey wireless networking solution that exceeds the functionality of many proprietary systems. CUWiN's vision is ubiquitous, extremely high-speed, low-cost networking for every community and constituency." More background:
"To set up a CUWiN network, you burn a CD with the 0.5.5 software later this week and use it to boot a computer with a supported wireless card. The system finds nearby nodes, creates tables, and establishes itself as part of the network. The software is free and open source. " 8:21:32 AM
Friday, May 06, 2005
Hackers attack IT conference:
Clever, nasty, and far too easy. "Hackers infiltrated an IT exhibition last week and attacked delegates' computers with a new type of wireless attack. Security experts attending the Wireless LAN Event in London last Wedesday found that anonymous hackers in the crowd had created a Web site that looked like a genuine log-in page for a Wi-Fi network, but which actually sent 45 random viruses to computers that accessed it.
Spencer Parker, a director of technical solutions at AirDefense .. said that the hackers walked around the exhibition carrying a Linux-based laptop running software that turned it into a wireless access point. Initially, they labelled the hotspot "Free_Internet_Access", then "BTOpenzone" and then "T-Mobile". .. . "It downloads 45 different randomly generated viruses, worms and keyloggers so antivirus software doesn't protect it. It doesn’t recognise the signatures." .. Parker, whose computer was infected by the attack, believes that the Web site was up for half an hour." 1:45:58 PM