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Thing Description
The Thing Description (TD) (or W3C WoT Thing Description (TD)) is a royalty-free, open information model with a JSON based representation format for the Internet of Things (IoT). A TD provides a unified way to describe the capabilities of an IoT device or service with its offered data model and functions, protocol usage, and further metadata. Using Thing Descriptions help reduce the complexity of integrating IoT devices and their capabilities into IoT applications. The TD originated from the Web of Things (WoT) initiative of the international standards organization of the W3C which has the intention to increase the interoperability in the IoT. Since April 2020, the Thing Description is a W3C recommendation (W3C WoT Thing Description 1.0). In January 2023, the W3C published a candidate recommendation for Thing Description 1.1. Principles The major principle of the Thing Description is to provide a human-readable and machine-interpretable interface description of an IoT device/ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Of Things
Web of Things (WoT) describes a set of standards by the World Wide Web Consortium (W3C) for the interoperability of different Internet of things (IoT) platforms and application domains. Building blocks The WoT building blocks provide a way to implement systems that conform with the WoT architecture. Each of these blocks is described below in this section. Thing Description (TD) The key component of the WoT building blocks is the WoT Thing Description. A Thing Description describes a virtual or a physical device (Thing). It defines an information model of a Thing based on semantic vocabulary and a serialization based on JSON. TD can be considered as the main entry point for a Thing, like an index.html page for a website. TDs foster interoperability by providing both human and machine-readable (and understandable) metadata about a Thing, such as a title, ID, descriptions, etc. A Thing Description also describes all available actions, events, and properties of a Thing, as well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CBOR
Concise Binary Object Representation (CBOR) is a binary data serialization format loosely based on JSON authored by C. Bormann. Like JSON it allows the transmission of data objects that contain name–value pairs, but in a more concise manner. This increases processing and transfer speeds at the cost of human readability. It is defined in IETF . Amongst other uses, it is the recommended data serialization layer for the CoAP Internet of Things protocol suite and the data format on which COSE messages are based. It is also used in the Client-to-Authenticator Protocol (CTAP) within the scope of the FIDO2 project. CBOR was inspired by MessagePack, which was developed and promoted by Sadayuki Furuhashi. CBOR extended MessagePack, particularly by allowing to distinguish text strings from byte strings, which was implemented in 2013 in MessagePack. Specification of the CBOR encoding CBOR encoded data is seen as a stream of data items. Each data item consists of a header byte con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenAPI Specification
The OpenAPI Specification, previously known as the Swagger Specification, is a specification for a machine-readable interface definition language for describing, producing, consuming and visualizing RESTful web services. Previously part of the Swagger framework, it became a separate project in 2016, overseen by the OpenAPI Initiative, an open-source collaboration project of the Linux Foundation. Swagger and some other tools can generate code, documentation and test cases from interface files. History Swagger development began in early 2010 by Tony Tam, who was working at online dictionary company Wordnik. In March 2015, SmartBear Software acquired the open-source Swagger API specification from Reverb Technologies, Wordnik's parent company. In November 2015, SmartBear announced that it was creating a new organization called the OpenAPI Initiative under the sponsorship of the Linux Foundation. Other founding member companies included 3scale, Apigee, Capital One, Google, IBM, I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java (programming Language)
Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let programmers ''write once, run anywhere'' ( WORA), meaning that compiled Java code can run on all platforms that support Java without the need to recompile. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar to C and C++, but has fewer low-level facilities than either of them. The Java runtime provides dynamic capabilities (such as reflection and runtime code modification) that are typically not available in traditional compiled languages. , Java was one of the most popular programming languages in use according to GitHub, particularly for client–server web applications, with a reported 9 million developers. Java was originally developed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Node-RED
Node-RED is a flow-based programming, flow-based development tool for visual programming language, visual programming developed originally by IBM for wiring together hardware devices, Application programming interface, APIs and online services as part of the Internet of Things. Node-RED provides a web browser-based flow editor, which can be used to create JavaScript functions. Elements of applications can be saved or shared for re-use. The runtime is built on Node.js. The flows created in Node-RED are stored using JSON. Since version 0.14, MQTT nodes can make properly configured Transport Layer Security, TLS connections. In 2016, IBM contributed Node-RED as an open-source software, open source OpenJS Foundation project. Node-RED projects See also *Dataflow programming *Visual programming language *Yahoo! Pipes References External links * {{IBM FOSS Internet of things JSON Visual programming languages IBM software ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python (programming Language)
Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically-typed and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC programming language and first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000 and introduced new features such as list comprehensions, cycle-detecting garbage collection, reference counting, and Unicode support. Python 3.0, released in 2008, was a major revision that is not completely backward-compatible with earlier versions. Python 2 was discontinued with version 2.7.18 in 2020. Python consistently ranks as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Node
In general, a node is a localized swelling (a "knot") or a point of intersection (a vertex). Node may refer to: In mathematics *Vertex (graph theory), a vertex in a mathematical graph *Vertex (geometry), a point where two or more curves, lines, or edges meet. *Node (autonomous system), behaviour for an ordinary differential equation near a critical point *Singular point of an algebraic variety, a type of singular point of a curve In science and engineering Astronomy *Orbital node, the points where an orbit crosses a plane of reference ** Lunar node, where the orbits of the sun and moon intersect ** Longitude of the ascending node, how orbital nodes are parameterized Biology *Lymph node, an immune system organ used to store white blood cells *Node of Ranvier, periodic gaps in the insulating myelin sheaths of myelinated axons *Sinoatrial node and atrioventricular node, specialized tissues in the heart responsible for initiating and coordinating the heartbeat *Primitive knot or p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HTTP GET
The Hypertext Transfer Protocol (HTTP) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can easily access, for example by a mouse click or by tapping the screen in a web browser. Development of HTTP was initiated by Tim Berners-Lee at CERN in 1989 and summarized in a simple document describing the behavior of a client and a server using the first HTTP protocol version that was named 0.9. That first version of HTTP protocol soon evolved into a more elaborated version that was the first draft toward a far future version 1.0. Development of early HTTP Requests for Comments (RFCs) started a few years later and it was a coordinated effort by the Internet Engineering Task Force (IETF) and the World Wide Web Consortium (W3C), with work later moving to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basic Access Authentication
In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a user name and password when making a request. In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic , where credentials is the Base64 encoding of ID and password joined by a single colon :. It was originally implemented by Ari Luotonen at CERN in 1993 and defined in the HTTP 1.0 specification in 1996. It is specified in from 2015, which obsoletes from 1999. Features HTTP Basic authentication (BA) implementation is the simplest technique for enforcing access controls to web resources because it does not require cookies, session identifiers, or login pages; rather, HTTP Basic authentication uses standard fields in the HTTP header. Security The BA mechanism does not provide confidentiality protection for the transmitted credentials. They are merely encoded with Base64 in transit and not encrypted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philips Hue
Philips Hue is a line of color-changing LED lamps and white bulbs which can be controlled wirelessly. The Philips Hue line of bulbs was the first smart bulb of its kind on the market. The lamps are currently created and manufactured by Signify N.V., formerly the Philips Lighting division of Royal Philips N.V. Products Operation The Hue Bridge is the central controller of the lighting system which allows the bulbs to "communicate" with Apple HomeKit and the app. In 2016, Philips released a new square shaped v2 bridge with increased memory and processor speed which replaced the round v1 bridge. The first-generation bridge received a final software update in April 2020 and disabled support from the Philips web servers. Functionality like grouping lights into rooms and scheduling scenes that depended on Philips servers to pack the instructions into a form the bridge executed could no longer be created. Early adopters were forced to buy a V2 bridge in order to use their light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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