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In this paper an embedded system for the pollution control in automobiles is described. In particular, the focus is on the description of the control algorithm, which receives, as an input, a signal from a MEMS accelerometer and uses it to control the fuel injection rate, in order to reduce the toxic emissions from the exhaust gases. A DSP implementation and simulation results of the same are detailed
Embedded systems have specific real-time requirements that led to the development of dedicated communication protocols. Such systems must face increasing communication needs and the evolution of switched Ethernet architecture. But moving from existing dedicated field-busses architectures to new Ethernet based architectures is not always feasible, due to industrial constraints. In this paper, we compare...
The MatPLC is an international project to develop a program similar to a PLC (programmable logic controller) for POSIX operating systems. It is an open source application consisting of a core, generic modules, and tools for creating custom modules. Since many control and monitoring systems are distributed in nature, they require that the application be running on an embedded system capable of withstanding...
Embedded systems have specific real-time requirements that led to the development of dedicated communication protocols. Such systems often face increasing communication needs and the integration of switched Ethernet architecture. But moving from existing dedicated field-buses architectures to new Ethernet based architectures is not always easily feasible, due to industrial constraints. In this paper,...
Recent developments in signal processing, pattern recognition, neural networks and powerful (low-cost) embedded processors allow including speech processing for human-machine interaction in consumer equipment. In this paper we present a compact system for vowels and small vocabulary recognition, its orientation being consumer applications, where cost is of paramount importance. In this case, the speech...
Dynamic voltage scaling (DVS) is a technique used in modern microprocessors operated by battery to set voltage and frequency levels at proper values that meet performance requirements while minimizing energy consumption. Most of the present work on DVS management, however, is based on simplistic assumptions about the hardware characteristics that limit the real applicability of the proposed algorithms...
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