Electronic system for data acquisition and control of a automotive brake test bench

Trabalho de Conclusão de Curso (graduação)—Universidade de Brasília, Faculdade UnB Gama (FGA), 2018.With the evolution of the automotive industry, vehicles come out of the factory each time with more power and faster top speeds. Along with this enhancement in performance the concern in effectiviness of brake systems should also increase. There are already consolidated standards rules for brake system testing, this project is focused with respect to SAE J2522 regulation that addresses on brakes tests on passenger vehicles. This paper aims to study the major factors regarding brake tests and electronic instrumentation in order to develop an electronic instrument system for automation of a testbench used to perform brake tests. The major output of the project is to design an electronic system able to measure all the relevant physical data and to control the needed actuators

The benefits of low operating voltage devices to the energy efficiency of parallel systems

Programmable circuits such as general-purpose processors or FPGAs have their end-user energy efficiency strongly dependent on the program that they execute. Ultimately, it is the programmer's ability to code and, in the case of general purpose processors, the compiler's ability to translate source code into a sequence of native instructions that make the circuit deliver the expected performance to the end user. This way, the benefits of energy-efficient circuits build upon energy-efficient devices could be obfuscated by poorly written software. Clearly, having well-written software running on conventional circuits is no better in terms of energy efficiency than having poorly written software running on energy-efficient circuits. Therefore, to get the most out of the energy-saving capabilities of programmable circuits that support low voltage operating modes, it is necessary to address software issues that might work against the benefits of operating in such modes