United States Department of Transportation
i
Connected commercial vehicles — retrofit safety device kit project : data acquisition system (DAS) documentation.
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2014-03-01
[PDF-1.14 MB]
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Abstract:Connected vehicle wireless data communications can enable safety applications that may reduce injuries and fatalities. Cooperative vehicle-to-vehicle (V2V) safety applications will be effective only if a high fraction of vehicles are equipped. Deployment of V2V technology will be enhanced if it is available not only for manufacturing in new vehicles but also for retrofit to existing vehicles. The objective of the Connected Commercial Vehicles—Retrofit Safety Device (CCV-RSD) Kit Project was to develop complete hardware and software that can be used in various brands and models of heavy trucks. The RSD kits provide the functionality needed for cooperative V2V and vehicle-to-infrastructure (V2I) safety applications to support the Model Deployment and other USDOT connected vehicle projects. This project included testing and documentation needed for installation, operation, enhancement, and maintenance of the units. These retrofit kits were built so they could be installed in existing class 6, 7, or 8 trucks. The RSD kits achieved a V2V and V2I functionality similar to that of the Connected Commercial Vehicles—Integrated Truck vehicles, where onboard equipment was integrated with newly manufactured truck tractors.
An essential element of the developmental testing of these safety devices is the ability to record and examine the operation of the truck, its driver, and the safety system. This capability was provided by a Data Acquisition System (DAS) installed on each of the test vehicles. The DAS communicated with the RSD, the vehicle’s internal data bus, a set of accelerometers, and video cameras. It recorded all of the Basic Safety Messages (BSMs) transmitted by the RSD and the BSMs that the RSD received from other units. This document describes the design of the DAS, its specifications, and instructions for operating it.
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