Refine Your Search

Search Results

Viewing 1 to 5 of 5
Technical Paper

The More Comprehensive Use of Embedded Technology for Quality Improvement of the National Public Transportation System

2015-09-22
2015-36-0357
The several problems and bottlenecks faced users public transport users in big cities are a common knowledge. Among them agencies responsible for public transport recognize the lack of centralized control, the under and over supply, the lack of information to users and the non-compliance of scheduled trips. In order to work identified problems improving cities like Recife and São Paulo are testing systems named as embedded technology that integrate the use of GPS, cameras, centralized monitoring among others, retarding a deeper coverage compared to systems previously used. The main objectives are the comfort and safety increase of users and the freight logistics improvement. This paper presents the technologies being tested in Brazil through successful models applied in countries as Spain and Colombia, as well as the scope of bids and proposals for improvement of public transport.
Technical Paper

Considerations on the Design and Implementation of ACP245 Protocol in the Telematic Control Unit

2010-10-06
2010-36-0339
This article discusses the design and implementation aspects of ACP 245, a telematic communication protocol, in the vehicle location equipment. The ACP 245 is an open protocol created by DENATRAN (National Traffic Department) to meet Resolution No 245 of CONTRAN (National Traffic Council), which made mandatory the use of antitheft equipment in new vehicles coming out of factory, domestic or imported. The Resolution No. 245 initiated a process of adaptation of products and services - within the operational context called SIMRAV (Integrated System for Monitoring and Automatic Vehicle Registry) - outlined by DENATRAN in partnership with automakers, vehicle location equipment manufacturers, SIM Cards manufacturers, monitoring services providers and mobile communication operators among others.
Technical Paper

Case Studies of the Fleet Operational Efficiency Gains through Onboard Intelligence and Managerial Processes

2010-10-06
2010-36-0332
One of the biggest challenges in managing any business is undoubtedly the reduction of operating costs. This paper presents the results obtained by deploying a management system for fleet operating efficiency based on the use of technological tools combined with managerial efforts, and training of drivers' behaviors. The use of sensing, onboard intelligence, communication networks and data processing allows the identification of inappropriate behavior of the vehicle/driver as well as the shortcomings of fleet operating pattern. In the model adopted, from the mass of collected data are generated weekly reports that are used to guide the fleet managers and correcting flawed features found in the behavior of drivers. The benefits of this process were observed in the form of fuel savings, reduced maintenance costs and accidents.
Technical Paper

Comparative Analysis of Automatic Steering Technologies and Intelligent Transportation System Applied to BRT

2010-10-06
2010-36-0310
In the recent years the urban transport system known as BRT (Bus Rapid Transit System) is gaining importance due to the growing demands from alternatives to rail systems. However, unlike rail systems, the performance of BRT depends on the driver's ability to perform accurate docking maneuvers on the bus stop platform and to travel in narrow bus lane quickly and safely. In this scenario, the automation of the bus through the technology of automated steering shows up as a viable alternative, with excellent prospect of operational performance improvement. This article shows how sensing technologies (including magnetic and optical), computational intelligence and electromechanical actuator can transform standard bus in automatically guided vehicle. In addition, it discusses the importance of integrating automated vehicle guidance system (AVGS) with Intelligent Transport System (ITS) to increase operational performance and safety of the BRT.
Technical Paper

Automatic Steering and Functional Safety – an Application of IEC 61508

2005-11-22
2005-01-4175
This paper describes the approach used, in accordance with IEC-61508 Standard, to define and allocate the safety requirements of a Magnetic Guidance System applied to urban buses. This paper covers the concept and design activities specific to the system safety lifecycle encompassing the Concept, Overall Scope Definition, Hazard and Risk Analysis, Overall Safety Requirements and Safety Requirements Allocation phases. Highlights of the adopted methodology include the application of the Controllability principle for determining the system risks, and the relevant role played by the FTA (Fault Tree Analysis) technique.
X