2017年1月6日 · The VSS tree provides for addressing of individual signals as well as groups of signals according to the hierarchy of the tree. Considering a simple `get` API that takes the name of the signal as an argument and returns a JSON string: string get("<signalname>") the value of an individual signal can be retrieved with:

2022年3月29日 · W3C liability, trademark and permissive document license rules apply. This specification defines a WebSocket based API for a Vehicle Information Service (VIS) to enable client applications to get, set, subscribe and unsubscribe to vehicle signals and data attributes.

The overall goal of the Vehicle Signal Specification (VSS) is to create a common understanding of vehicle signals in order to reach a “common language” independent of the protocol or serialisation format.

VSS Tree Model. The diagram below shows a generated tree of the VSS. Here you can see a mapping for the current catalog of signals related to vehicles. Click a Branch Node to expand or collapse the tree. (Slower animation while pressing the altKey (“option” key for Mac OS-X).)

The VSS data model is a hierarchical tree structure built with modules that can be flexibly combined, as illustrated below. This standardized data model, specification, and tooling helps you simplify tens of thousands of vehicle signals into a common understanding that is protocol and technology-agnostic.

The tree manager abstracts the details of the tree, e. g. its format, which through the VSS tool support can be e. g. JSON, CSV, or c-native (c.f. VSS). It provides a method for searching the tree, to verify that a given path has a match in the tree, or to find all paths matching a path including wild cards.

2024年2月21日 · The Vehicle Information Service Specification (VISS) is a service for accessing vehicle information, signals from sensors on control units within a vehicle's network. It exposes this information using a hierarchical tree like taxonomy defined in COVESA Vehicle Signal Specification (VSS). The service provides this information in JSON format.

The statestorage database is used as a buffer between the two asynchronous systems north- and southbound of it. It contains a single entry for each signal of the VSS tree that is used to represent the signals of this vehicle.

VSS supports only a single tree, that means that all signals must belong to the same root. In the VSS standard catalog the root branch is called Vehicle, so all signals must be part of the Vehicle tree. Tree nodes are addressed, left-to-right, from the root of the tree toward the node itself.

The Vehicle Information Service Specification (VISS) is a service for accessing vehicle information, signals from sensors on control units within a vehicle's network. It exposes this information using a hierarchical tree like taxonomy defined in COVESA Vehicle Signal Specification (VSS).