Scanning the Earth May 30th, 2011 Kei Uehara, Tomo Furutani, Pieter Franken Murai Lab, Keio Research Center at SFC Safecast.org Japan
Measuring Radiation• Overview of Safecast.org• Measurement Equipment• Mobile Radiation Measurement• What have we found• Scanning the Earth Project
Safecast Factsheet• Safecast was created 1 week after the 3/11 Japan earthquake.• Core team of 5 people, almost 50 regular volunteers worldwide.• Team concentrations in Tokyo, Portland and Los Angeles.• Raised $37K in 30 days with Kickstarter, exceeding funding goal.• Currently: 5 mobile "bGeigie" car-based units & 25 handheld sensors deployed.• Another 50 devices will be active by the end of June 2011.• Short term goal is to have 1000 sensors deployed in Japan in 1 year.• 140,000 measurements done by GPS mapping• To date 1,135 data submissions to website by crowd sourcing• Website trafﬁc has exceeded over 270,000 visitors since launch.• All data collected and published by Safecast is open and available under CC0 dedication.
Open Global Sensing SAFECAST 05/02/11Section 2.SAFECAST ADVISORY TEAM Joi Ito is a Japanese activist, entrepreneur, and venture capitalist. Ito has received recognition for his role as an entrepreneur focused on Internet and technology companies and has founded, among other companies, PSINet Japan, Digital Garage and Infoseek Japan. He is currently Chairman of Creative Commons and General Partner of Neoteny Labs, an investor and adviser to Twitter, board member of Mozilla Foundation, WITNESS, Global Voices, Digital Garage, CCC, Tucows, Technorati, SocialText, and others. Joi was named to be the director of the MIT Media Lab. Jun Murai is a Japanese computer scientist, known as “the father of Japan’s Internet”. A professor at Keio University, Murai is the founder of JUNET and president of WIDE Project. Murai graduated from Keio University in 1979 and received a Ph.D. from the same school in 1984. He is currently the Dean of the Faculty of Environment and Information Studies at Keio University. Ray Ozzie is an independent software entrepreneur, most recently having served as Chief Software Architect of Microsoft. Prior to Microsoft he was best known for his work in the area of social productivity as the creator of both Lotus Notes and Groove. Earlier in his career Ozzie developed Symphony for Lotus. He worked on Lotus 1-2-3, worked on VisiCalc and TK!Solver at Software Arts, and did distributed OS work at Data General. Honored as a distinguished alumnus by University of Illinois, Ozzie has been recognized by numerous organizations including the IEEE and World Economic Forum. He has been inducted as a member of both the National Academy of Engineering and the American Academy of Arts & Sciences. Dan Sythe has designed radiation detection instruments and systems for 33 years. He was consultant and instrumentation provider for Three Mile Island Public Health Fund and their Scientiﬁc Advisory Board, which evaluated the TMI Accident, and worked with NRDC, Dr. John Gofman and others to respond to Chernobyl affected communities. He founded Solar Electronics International (1978), and was Senior Electronic Design Engineer at Astec BSR (USA) LTD (1980s). He is currently President and Founder of Iospectra - International Medcom and Founder and Executive Director of nonproﬁt Whalesong Project, focused 11TH AVENUE SUITE 200 PORTLAND, OR 97209 334 NW on ocean health issues. w: 503.610.8052 e: email@example.com SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Open Global Sensing SAFECAST 05/02/11Section 1.SAFECAST PHASE 1Current visualization of data — planned and launched in 72 hours. Safecast will be enhancing this site with moredata, visualization and analysis. As part of our commitment to global use of data, our team has been translating all 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209materials into English, Japanese and German. Future plans include further real-time translations of all materials (blog w: 503.610.8052 e: firstname.lastname@example.org, Tweets) into several languages. SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Open Global Sensing SAFECAST 05/02/11Section 1.SAFECAST DEVICESIN CURRENT DEPLOYMENTInspector Alert CRM100 bGeigie NETRAD iGeigiecommercially manufactured commercially manufactured original design mobile/car original design stationary original design conceptdevice built by International device build by International set up. Uses 2 web connected web connected concept device that works withMedcom, sensitive to Alpha, Medcom, sensitive to Beta Inspector Alert devices and is device. Uses the same iPhones. Limited production,Beta and Gamma radiation. and Gamma radiation. sensitive to Alpha, Beta and 2” pancake sensor as various sensors and Gamma radiation. the Inspector Alert and is sensitivities. sensitive to Alpha, Beta and Gamma radiation. Developed in conjunction with Tokyo Hackerspace. 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209 w: 503.610.8052 e: email@example.com SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Open Global Sensing SAFECAST 05/02/11Section 4.PHASE 2: SENSOR PROTOTYPEIn preparation for a larger sensor network in partnership with Keio University, our team has considered the technical and design aspects of externalmonitors. These renderings are early prototypes. Final designs may vary. LED & Mode Button USB OTG for charging & connection as USB device Internal Li-Ion battery pack 3.5mm headphone jack for acoustic interface USB host port to provide power as a charger 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209 w: 503.610.8052 e: firstname.lastname@example.org SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Open Global Sensing SAFECAST 05/02/11Section 4.PHASE 2: ARCHITECTUREThis diagram demonstrates the early thought of how our project could scale, starting with the sensors deployed in Phase 1. While the details could change as theproject grows, the diagram outlines basic architecture that will acheive the goal of building a reliable, public-facing sensor network. 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209 w: 503.610.8052 e: email@example.com SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Open Global Sensing SAFECAST 05/02/11Section 1.SAFECAST MOBILE DATA MAPPING 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209The members of Safecast realized that there were areas in Japan where little or no data was being reported. The w: 503.610.8052 e: firstname.lastname@example.orgGeigie (bentoGeigie) was developed to capture data while a Safecast volunteer team drives along Japanese highways. SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
Rapid Prototyping• Volunteer Truck Driver - April 16th• Keio Research Team - April 20th• bGeigie / Tokyo Hacker Space - April 23rd• bGeigie Mini - Battery Powered, SD Card - May 11th
bGeigie - GPS Radiation Logger• GPS Logger• Arduino board for GM interface• USB memory with Linux, Mac and PC Java applet• Medcom Geiger Counter a/b/g• Waterproof and shockproof• Can be mounted on any car window
Open Global Sensing SAFECAST 05/02/11Section 1.SAFECAST KICKSTARTER FUNDRAISINGThe Safecast team turned to micro-funding site Kickstarter to raise funds that would purchase up to 600 GeigerCounter devices to be deployed in Japan. At the time of publication, over $34,000 has been raised, which will 334 NW 11TH AVENUE SUITE 200 PORTLAND, OR 97209purchase a little over 100 Geiger counters. Additional funds will go to purchasing more devices and distributing w: 503.610.8052 e: email@example.com to trained individuals to capture data. SAFECAST!|!334 NW 11TH AVENUE, SUITE 200 PORTLAND, OREGON 97209 |
What have we found?• Alpha, Beta, Gamma• •Hotspots Local Hotspots - Schools and Homes • Urban Hotspots • Chiba and Nasu Hotspots• Contamination is on the ﬂoor, not in the air • What is it? • How does it behave? • How to remove it?
Contamination Properties• everything is covered with a thin radio-active coating, primarily Cs134 and Cs137• the coating doesnt dissolve easily in water or rain (as it has not washed off till now)• it doesnt easily stick to car tires (we measured no increase after one day drive to Koriyama) • it is high in alpha and beta besides gamma• Contamination is on top, sky facing. Not under covered areas or sides.• it sticks to wood, concrete and iron on the surface and is most radioactive on these surfaces• it penetrates soil only on the surface (1-3cm deep) - as it is in the soil you measure lower as the alpha component get shielded. Removal of the top soil reduces radiation by 80% or more.• the coating was not deposited by rain - it is only on surfaces that are in open air. E.g. the top of a concrete wall is coated, but the sides have nothing (if it was rain it would have stuck on the sides) or spaces under garden tables are not active, while you would expect rain to have dripped through). It looks like the areas are ﬂashed rather than rained/snowed on. • When scrubbing with a brush and water on a wooden table we could remove 50%, by using sand paper we got it down to 80% (or more as it measured same as back ground radiation)• Measured the same concrete area 4 weeks ago and this week - in both cases measured around 350 CPM with the Inspector 2" pancake. Despite a month of rain, no signiﬁcant change in levels.
Scanning The Earth Project• Scan and disclose air radiation dose data both by mobile and ﬁxed-observation bGeigies covering almost 100% of the ground surface (transportation network) in Japan• Establish integrated monitoring system on transportation network via ICT network• Collect relative data set by calibrating
More information• Safecast.org (map and blogs)• Safecast.jp (latest news from Japan)• @safecastdotorg• @safecastJapan• ScanningTheEarth -- http:// web.sfc.keio.ac.jp/~maunz/wiki/index.php? ScanningTheEarth
And ... iGeigie!• Build your own iGeigie at Tokyo Hacker Space• http://www.tokyohackerspace.org/• www.iGeigie.com