Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 29 for “"vehicle data"”.
-
Real-Time Estimation of Traffic Stream Density using Connected Vehicle Data
… density on signalized approaches using connected vehicle (CV) data. First, the dissertation introduces a novel variable estimation interval that allows for higher estimation precision, as the updating time interval always contains a fixed number of CVs. After that, the dissertation develops …
-
System Architecture for Weather, Road Condition, and Vehicle Data Telemetry via Low Bandwidth Radio Network
… real-time winter weather, road condition, and vehicle-related data gathered by mobile, vehicle-based systems can be used to more effectively maintain roads, reduce operating costs through more efficient road maintenance, and improve responsiveness and accuracy of safety systems such as road …
-
Adaptive Brake By Wire: From Human Factors to Adaptive Implementation
… possible to customize the pedal feelings and the vehicle deceleration needed depending on several factors (i.e. surrounding braking scenario, driver characteristics, race vs day-by-day driving condition). Since braking maneuvers are typically critical and involve the driver, the design and …
-
A mixed-integer linear programming (MILP) model for dynamic coordinated signal optimization along a traffic corridor
… demonstrating measurable improvements in speed, Vehicle Hours Traveled, and vehicle stops. Future work includes scaling to larger networks, incorporating pedestrian phases, and integrating connected vehicle data.
-
Systems for the interconnection of Android applications and automobiles via the OpenXC framework
… set of applications that use information from a vehicle to provide a better user experience. We introduce two Android applications that make use of the open-source OpenXC library to gauge driver awareness and to provide a user interface via steering wheel controls. The first of these applications …
-
Advances in grasping and vehicle contact identification : analysis, design and testing of robust methods for underwater robot manipulation
… arm mounted to a free flying underwater vehicle. Part I minimizes system sensitivity to misalignment by developing a gripper and a suite of handles that passively self align when grasped. After presenting a gripper guaranteed to passively align cylinders we present several other self …
-
Driver behavior classification and lateral control for automobile safety systems
… road safety, and avoid potential collision. The data acquisition equipment that can be used to measure the state and parameter information of the vehicle may not be available for a standard passenger car due to economical and technical limitations. This work focuses on developing three …
-
Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… navigation for REMUS Autonomous Underwater Vehicles (AUVs). Although the concept of navigation with one acoustic beacon is not new, the objective was to develop a computer algorithm that could eventually be integrated into the REMUS architecture. This approach uses a least squares fit …
-
Validation of ADVISOR as a Simulation Tool for a Series Hybrid Electric Vehicle Using the Virginia Tech FutureCar Lumina
… produce more fuel efficient and lower emissions vehicles. These goals are reflected by the Partnership for a New Generation of Vehicles (PNGV), a government, industry, and educational partnership in the United States. The major goal of this partnership is to have production vehicles by 2010 to …
-
Minimizing redundant communication in vehicle networks for city mapping
… as well as the ability to send this sensor data over the network to a remote server. This presents the opportunity for a variety of applications that make use of real-time vehicle sensor data. Combined with advances in real-time object detection, this enables real-time updates from vehicle …
-
Framework for better Routing Assistance for Road Users exposed to Flooding in a Connected Vehicle Environment
… safety measures are limited to road closures, vehicles affected by the flooding have an origin, destination, or path segment that is closed or soon-to-be flooded during the trip's duration. This thesis introduces a framework to provide routing assistance and trip cancellation recommendations to …
-
PROACTIVE DETECTION OF ALCOHOL IMPAIRMENT: LEVERAGING ARTIFICIAL INTELLIGENCE FOR ENHANCED TRAFFIC SAFETY
… identifying impairment, especially out-of-the-vehicle detection methods. To address this gap, this thesis introduces a novel approach that uses machine learning (ML) and deep learning (DL) techniques to classify people as intoxicated or sober using image data from outside the cars. The study …
-
Analysis and detection of driver fatigue caused by sleep deprivation
… the state of driver alertness based on driver-vehicle data. Although sleep and fatigue are major causes of impaired driving, neither effective regulations nor acceptable countermeasures are available yet. The first part of this thesis analyzes driver-vehicle systems with discrete …
-
Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… navigation for REMUS Autonomous Underwater Vehicles (AUVs). Although the concept of navigation with one acoustic beacon is not new, the objective was to develop a computer algorithm that could eventually be integrated into the REMUS architecture. This approach uses a least squares fit …
-
Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… navigation for REMUS Autonomous Underwater Vehicles (AUVs). Although the concept of navigation with one acoustic beacon is not new, the objective was to develop a computer algorithm that could eventually be integrated into the REMUS architecture. This approach uses a least squares fit …
-
Sensor Fusion and Obstacle Avoidance for an Unmanned Ground Vehicle
… the scene. The small size of some of these vehicles restricts the size, weight and power consumption of the sensor payload and onboard computational processing that can accommodated by UAS.</p> <p>This thesis analyzes the development and implementation of terrain mapping, path planning and …
-
Review of South African live load models for traffic loading on bridge and culvert structures using weigh-in-motion (WIM) data
… uses the axle weights and axle spacings of heavy vehicles recorded by weigh-in-motion (WIM) sensors to calculate the load effects on single lane, simply supported structures spanning up to 30m. The main objective was to compare the load effects caused by the recorded vehicles with those calculated …
-
Systems Integration, Modeling, and Validation of a Fuel Cell Hybrid Electric Vehicle
… and validation of a fuel cell hybrid electric vehicle based a conversion of a five-passenger production sedan. Over 60 engineering students working together as the Hybrid Electric Vehicle Team of Virginia Tech (HEVT), integrated a proton exchange membrane fuel cell system into a series hybrid …
-
A microsimulation analysis of highway intersections near highway-railroad grade crossings
… focused on three specific areas. First, average vehicle delay was examined, and this delay was compared for seven specific train speed distributions, including existing conditions. Furthermore, each distribution was associated with train detectors that were placed at the distance the fastest …
-
Commercial Electric Vehicle Cabin Heating System Modelling and Optimization
… validated in Simcenter Amesim using experimental vehicle data from an industry partner. Model parameters were calibrated through optimization studies to achieve close agreement between the simulated and experimental compressor power consumption and overall HP performance. Subsequently, the …
Page 1 of 2