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Traffic Sign Detection and Vehicle Monitoring
Published in P. C. Thomas, Vishal John Mathai, Geevarghese Titus, Emerging Technologies for Sustainability, 2020
Abel Simon, Aiswarya Mary Babu, S. Ananthakrishnan
The US Congress passed the Clean Air Act in 1970 and established the Environmental Protection Agency (EPA). This started a series of graduated emission standards and requirements for maintenance of vehicles for extended periods of time. To meet these standards, manufacturers turned to electronically controlled fuel feed and ignition systems. Sensors measured engine performance and adjusted the systems to provide minimum pollution. These sensors were also accessed to provide early diagnostic assistance. OBD II is a standard used for onboard-diagnostics used on a wide range of cars. OBD II provides access to numerous engine control unit (ECU) data and provides valuable information sources when troubleshooting problems inside a vehicle. In this project, it is used for informing the vehicle owner regarding the faults detected by the OBD-II port and the valuable information from OBD-II.
Classifying pavement surface anomalies utilizing smartphones technology, vehicles and on-board diagnostic devices
Published in Maurizio Crispino, Pavement and Asset Management, 2019
C. Kyriakou, S.E. Christodoulou, L. Dimitriou
In current years, smartphone technology has gained significant attention within the infrastructure, transportation, and automotive industries. Smartphones can be utilized in the collection of vehicle sensor data, since they come with a range of built-in sensors such as accelerometer, gyroscope and GPS sensors. Further, OBD Bluetooth devices coupled with specialized smartphone applications can enable the real-time monitoring of, among others, GPS latitude and longitude, forward and lateral acceleration, vehicle roll and vehicle pitch. The goal for roadway anomaly detection by use of smartphone technology, OBD devices and vehicles is set in parallel with the suggestion that such technology can be applied in GIS-based pavement management systems (PMS). An adequate number of vehicles collecting this crowd-sourced data can then be used in order to generate a georeferenced event at points where vehicles encounter pavement surfaces anomalies on a roadway network. Even though multiple vehicles may probably provide conflicting data concerning pavement surface conditions, the joint knowledge provided by participatory sensing provides an accurate model of the pavement surface in relation to how an average user experiences the roadway condition.
Electric Implementation of Fault Diagnosis in Hybrid Vehicles Based on Reference Frame Theory
Published in Hamid A. Toliyat, Subhasis Nandi, Seungdeog Choi, Homayoun Meshgin-Kelk, Electric Machines, 2017
It is very important for any vehicle to monitor its vital equipment continuously. Therefore, nowadays almost all vehicles are equipped with an onboard diagnostic (OBD) system [1]. This system has been used for warnings and monitoring critical failures in the vehicle, such as ignition, battery, oil and gasoline level, engine, and brakes. If a problem or malfunction is detected, the OBD system sets off a malfunction indicator light (MIL), readily visible to the vehicle operator on the dashboard, to inform the driver that a problem existed. When illuminated, it displays a universally recognizable symbol or a similar phrase for each failure. OBD is a valuable tool that assists in the service and repair of vehicles by providing a simple, quick, and effective way to pinpoint problems by retrieving vital automobile diagnostics from the OBD systems [2].
Transient fuel consumption prediction for heavy-duty trucks using on-road measurements
Published in International Journal of Sustainable Transportation, 2023
Chong Peng, Yiyi Wang, Ting Xu, Yixin Chen
One of those programs is located in the Naxi District of Sichuan Province, where approximately 400 diesel commercial trucks are equipped with OBD devices that transmit daily operation data to an online system using the Controller Area Network-bus (CAN-bus) software via cloud service. The OBD devices track vehicle operation including specific engine parameters, emissions controls, and emission-related parameters. OBD data have been used in research to study driver behavior (Hermawan & Husni, 2020) and can be used independently or synchronized with other sources, such as Global Positioning System (GPS) navigation, accelerometers, driver cameras, and satellite imagery.
Aftermarket vehicle hybridization: Potential market penetration and environmental benefits of a hybrid-solar kit
Published in International Journal of Sustainable Transportation, 2018
Stefano de Luca, Roberta Di Pace
The vehicle is equipped with a vehicle management unit (VMU) and an on-board diagnostics protocol gate (OBD). The OBD makes it possible to access data such as pedal position, vehicle speed, engine speed, manifold pressure and other variables. The VMU receives the data from the OBD gate, from the battery, and it drives in-wheel motors by suitably acting on the electric mode. Everything is supported by control logics which are compatible with the typical driving styles of conventional car users. Indeed, real-time knowledge of “driver intention” is embedded to allow for effective and safe control of the wheel motors (Rizzo et al., 2013).