- Datalift is a tool suite that assists with the publication of datasets on the semantic web through automating processes like vocabulary selection, data conversion, and interlinking datasets.
- It provides reference datasets for the French ecosystem and guidelines for URI design.
- The platform uses modular internal RDF storage with a REST API and rich user interface built on technologies like Java, JQuery, and Velocity templates.
- Datalift is working with organizations across various domains in France to publish their datasets as linked open data.
Datalift is a project that aims to catalyze the publication and interconnection of data on the web. It provides tools and services to help with various steps in the data publication process including:
- Dataset publication and conversion tools to automate publishing raw data as RDF
- Infrastructure for storing and querying published RDF data
- Linkage tools to interconnect published datasets by finding equivalence links between resources
- Applications that visualize and make use of published and interlinked data
The goal is to make it easier for organizations to publish their data on the web in a way that is machine-readable and interoperable through the use of semantic web standards and vocabularies. This will help realize the promises of
2015.11.27 工研院 "物聯網發展趨勢、關鍵技術與應用實務" 課程簡報
Internet of things on energy monitor.
using open hardware and open source project to implement IoT in simple way.
- Datalift is a tool suite that assists with the publication of datasets on the semantic web through automating processes like vocabulary selection, data conversion, and interlinking datasets.
- It provides reference datasets for the French ecosystem and guidelines for URI design.
- The platform uses modular internal RDF storage with a REST API and rich user interface built on technologies like Java, JQuery, and Velocity templates.
- Datalift is working with organizations across various domains in France to publish their datasets as linked open data.
Datalift is a project that aims to catalyze the publication and interconnection of data on the web. It provides tools and services to help with various steps in the data publication process including:
- Dataset publication and conversion tools to automate publishing raw data as RDF
- Infrastructure for storing and querying published RDF data
- Linkage tools to interconnect published datasets by finding equivalence links between resources
- Applications that visualize and make use of published and interlinked data
The goal is to make it easier for organizations to publish their data on the web in a way that is machine-readable and interoperable through the use of semantic web standards and vocabularies. This will help realize the promises of
2015.11.27 工研院 "物聯網發展趨勢、關鍵技術與應用實務" 課程簡報
Internet of things on energy monitor.
using open hardware and open source project to implement IoT in simple way.
In the last year, we've gone from millions of pieces of data to billions of pieces of data. I will speak on a solution for scaling up and about the challenges presented. Also covered will be the future of data at Qihoo 360 with MongoDB.
3. OSI Model CAN
Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
CANopen/MilCAN/DeviceNet…
NA
NA
NA
NA
LLC/MAC
ISO11898
Mapping
4. • Controller Area Network
• Half-Duplex Differential Bus
• Broadcast(Multicast) Message
• Message-Based communication protocol
• Non-Return–to-Zero (NRZ) transmission method
• Low cost and Simple implementation
• Good error detection capabilities
• Excellent two-wire fault tolerance capabilities
– Either of the two wires in the bus is broken.
– Either of the two wires are shorted to power, to
ground, or together.
8. • ISO 11898 Controller Area Network
– 1 Data Link and PHY
– 2 High-speed medium access unit
– 3 Low-speed, fault-tolerant, medium-dependent
interface
– 4 Time-triggered communication
– 5 High-speed medium access unit with low-power
mode
– 6 High-speed medium access unit with selective wake-
up functionality
• ISO 11992 p2p
• ISO 16845 Conformance test Plan
• SAE J2411
9. • 2.0A
– Same as 1.2 spec.
– Only Support Standard Data Frame (11-bit ID)
• 2.0B(passive)
– Support Standard(11-bit ID)
– Ignore Extended Data Frame(29-bit ID)
• 2.0B(active)
– Support Standard(11-bit ID) and Extended
Data Frame(29-bit ID)
10. Bit Rate Bit Time Bus Length
1 Mbps 1 µs 25 m
800 kbps 1.25 µs 50 m
500 kbps 2 µs 100 m
250 kbps 4 µs 250 m
125 kbps 8 µs 500 m
62.5 kbps 16 µs 1000 m
20 kbps 50 µs 2500 m
10 kbps 100 µs 5000 m
24. 1 - Reserved
2 CAN_L
CAN_L bus line
(dominant low)
3 CAN_GND CAN Ground
4 - Reserved
5 (CAN_SHLD)
Optional CAN
shield
6 (GND)
Optional CAN
ground
7 CAN_H
CAN_H bus line
(dominant high)
8 -
Reserved (error
line)
9 CAN_V+ Optional power
25. Pin Function DeviceNet Color
1 Drain Bare
2 V+ Red
3 V- Black
4 CAN_H White
5 CAN_L Blue
26. 1: CAN_H = CAN_H bus line (dominant high)
2: CAN_L = CAN_L bus line (dominant low)
3: CAN_GND = Ground/0 V/V-4: Reserved
5: Reserved
6: (CAN_SHLD) = Optional CAN Shield
7: CAN_GND = Ground/0 V/V-
8 (CAN_V+) = Optional CAN external positive supply
27. Pin Function
Recommended
cable color
1 Power negative Black
2 CAN_H White
3 Optional Signal GND Yellow
4 Optional Initiate Gray
5 Power positive Red
6 CAN_L Blue
28. 1: CAN_GND = Ground/0 V/V-
2: CAN_L = CAN_L bus line (dominant low)
3: (CAN_SHLD) = Optional CAN Shield
4: CAN_H = CAN_H bus line (dominant high)
5: (CAN_V+) = Optional CAN external positive supply
53. • BOSCH, “CAN Specification version 2.0”, 1991
• Marco Di Natale, “Understanding and using the Controller Area
Network”, October 30, 2008
• Microchip, “AN713 – Controller Area Network(CAN) Basics”, Sep. 2005
• Microchip, "CAN Workshop 202”
• Freescale, “Analog Bus Communication and Products”
• Wikipedia – CAN bus