RTPS
DDS and its Relation to Unmanned Vehicle Interoperability
DDS is increasingly beiong adopted as the middleware and data-model of choice for vehicle integration and interoperability. Testament to that are the recent directives from the UK MOD (Def Stan 23-03) that standardize on DDS for the Land Data Model and the messaging integration, as well as the US OSD Unmanned Control Segment (UCS) architecture that also directs the use of DDS for Unmanned Vehicle integration.
Real-time distributed vision-based network system for logistics applications
The communication network providing real-time image sharing between the planning office and the warehouse for supply chain management is presented in this paper. Middleware plays a major role in developing distributed system efficiently for communication between image capturing devices (Vision Node) and image processing node as well as the distributed nodes. The image distribution over the network in real-time manner is useful to numerous logistic applications, such as quality control of pick-and-pack service, planning of cargo and pallet loading, and vehicles tracking.
The use of real-time publish-subscribe middleware in networked vehicle systems Multivehicle Systems
Seaware is a publish-subscribe middleware used in multi-vehicle networked systems composed of autonomous and semi-autonomous vehicles and systems. Seaware provides a high level interface to network communications and may be deployed with a combination of heterogeneous components within a dynamic network.
RTPS middleware for Real-Time Distributed Industrial Vision Systems
Designing and constructing Real-Time Distributed Industrial Vision Systems (RT-DIVS) from scratch is very complicated task. RT-DIVS has Conflicting requirements such as reasonable development cost, ease of use, reusable code and high performance. The success key in building such systems is to recognize the need for middleware software. Middleware plays a major role in developing distributed systems efficiently.
DDS Interoperability Demo: RTI, Prismtech, TwinOaks
Three vendors: RTI, PrismTech, and TwinOaks Computing performed a live interoperability demo between their respective products.
The demo showcased 7 scenarios:
- Basic interoperability
- QoS Matching
- Quality of Service: DURABILITY
- Time Based Filters
- Quality of Service: RELIABILITY
- Intermittent Connectivity
- Multiple Topics, Keys & Content Filters
And demonstrated interoperability for:
Leveraging DDS-RTPS Wire Interoperability Protocol: Towards a canonical tool-set for run-time interaction with the Global Data Space
This presentation exposes recent research in DDS Global-Data Space tools that leverage standard display models such as Microsoft Excel’s; it also explores the different categories of DDS run-time tools drawing requirements and specific examples from COTS tools commonly used to interact with data.
Achieving DDS Interoperability
Twin Oaks Computing, Real-Time Innovations, and PrismTech participated in a multi-vendor DDS interoperability demonstration during the March 2009 OMG Technical Meeting in Arlington, VA, USA. In this presentation, we will describe the events leading up to the demonstration and discuss how we were able to achieve success. We will cover challenges faced, lessons learned, and touch on related future work.
DDS RTPS Vendor Ids
This table lists the currently assigned DDS-RTPS list of vendor IDs The DDS-RTPS Wire Interoperability Protocol pecifies a field within the message header that must be filed with a 16-bit number that uniquely identifies the implementor of the protocol This is the so-called RTPS vendor ID.
If you are an implementor of RTPS and need a vendor ID please send an email to: dds AT omg DOT org.
Analysis of the Advanced Message Queuing Protocol (AMQP) and Comparison with the Real-Time Publish Subscribe Protocol (DDS-RTPS Interoperability Protocol)
Analysis of the Advanced Message Queuing Protocol (AMQP) and Comparison with the Real-Time Publish Subscribe Protocol (DDS-RTPS Interoperability Protocol), Presentation given by Gerardo Pardo-Castellote (RTI) and Angelo Corsaro (SELEX SI), at the 2007 Real-Time and Embedded Systems Workshop
UK MOD Generic Vehicle Architecture (GVA) Mandates the use of DDS for Vehicle Land Platforms
Defence Standard (Def Stan) 23-03 was been produced on behalf of the Ministry of Defence (MOD) by UK Defence Standardization (DStan). It has been developed through the collaborative efforts of the MOD and industry, and builds on the extant Vehicle Systems Integration (VSI) and previous work including the Vehicle Technology Integration Demonstrator (VTID)
The purpose of this Def Stan 23-09 is to enable the MOD to realise the benefits of an open architecture approach to Land platform design and integration, especially in regard to platform infrastructure and the associated Human Machine Interface (HMI) in order to improve operational effectiveness across all Defence Lines of Development (DLOD), reduce integration risks and reduce the cost of ownership across the fleet. This is achieved by mandating and applying the appropriate interface standards.
Specifically this Def Stan specifies the mandatory standards to be used in the design and implementation of Land platform electronic and power infrastructures, mechanical interfaces, HMI and Health & Usage Monitoring System (HUMS), together with requirements for Interface Control Documents (ICDs) and Verification and Validation (V&V).
Def Stan 23-09, section 13, mandates the use of the DDS API and the DDS Interoperability wire protocol (DDS-RTPS / DDSI) for the Interface Definition and Integration.
The following paragraphs, extracted from a letter from QinetiQ, the UK system integrator that lead the VSI Group that authored the Def Stan document explains the reasons behind the selection of DDS.
A recent activity for this group has been to address the interface between application software and the architecture, for which we surveyed suitable technologies against UK MOD requirements. The OMG DDS family of standards were easily the most appropriate for military land vehicle application due their openness, the OMGs heritage, the commitment by the vendors to address full interoperability, and technical features of DDS. Most important of the technical features considered were the opportunity to simplify application development through adoption of the data centric nature of DDS and the low coupling achieved by using a publish and subscribe communication model.
In order to fully benefit from the use of DDS and to encourage adoption by its contractors, UK MOD has funded the construction of the UK MOD Land Data Model. This data model will encompass data type definitions, quality of service patterns and vehicle type profiles, it will allow the defence community to generate a set of products that interact over DDS based data network in a number of platforms. The Data Model has been endorsed by the VSI Group and a recommendation to the MOD for standardisation through the GVA Office has enabled the data model to undergo its initial deployment in two procurement activities.
The GVA Guide is available in parallel with this Def Stan to add background to the Def Stan and explain best practice to both MOD and Industry stakeholders. It should be read in conjunction with the Def Stan and is available from GPOC.
