Abstract

This work presents an implementation of a digital PID (Proportional+ Integral+Differential) controller in a PC machine running RTAI. PID controllers are well known and have a wide range of applications in the control of analog systems such as servomotors. In order to achieve the desired performance the system output (axis position) is feed-back to the PID controller which generates… (more…)

Abstract

This paper presents an assessment of the performance of a real time controller using an IP network to link the controller, the sensor and the actuator. This control system is part of a anthropomorphic robot manipulator with two arms and a pan-and-tilt stereo vision head, totalizing 19 joints. (more…)

Mytron has used embedded Linux to add Internet/intranet capabilities and other improvements to its system for shop floor scheduling, management, and reporting. Mytron's Dynamic Process Analysis (DPA) system now enables company personnel to remotely access the latest production information and make effective management decisions based on real time data. (more…)

Abstract

The Units Intensive Cares (UIC) of the Hospitals in Peru, they need of a centralized system that it integrates in a net, the different marks of Lung Ventilator to supervise from oneself place the process of ventilation mechanics, to be a process of high risk; they also need of a graphic monitor of local supervision for the Lung Ventilator that lack this system. (more…)

Abstract

The primary means of communication between RTLinux tasks and Linux tasks are realtime FIFOs. They were limited by the fact that there was a static number of them and their names were limited to /dev/rtf0 through /dev/rtfXX. Starting with RTLinux/Pro 1.2, we have added a means for creating real-time FIFOs with arbitrary names and locations that can be created and operated on just as… (more…)

Prosig Ltd. used embedded Linux, virtual private network (VPN), and other open source software technologies to add remote access and other improvements to its vibration monitoring system. It completed the project using mostly in-house staff, in under a year. (more…)

Abstract

RTLab is a software project which provides a cross-variant (RTAI and RTLinux) conceptual framework for biomedical experiment interface. The intent is to provide abstract services on top of RTAI/RTLinux and COMEDI for the rapid development of a certain class of control and measurement applications typical in the biomedical field. (more…)

Abstract

In systems intended for handling continuous media (both video and audio), standard Linux does not provide suitable scheduling of the system resources regarding the complexity of the tasks. Where such a system consist of mixed applications, conventional computing is executed at the same time with hard real-time tasks, single scheduling policy is not able to satisfy the demands of the… (more…)

Advanced Developments in Electronics and Software (ADES) used embedded Linux and open source networking software to reduce the cost of its multi-camera computer vision and control system by 25 percent, while still meeting customer expectations. ADES also uses embedded Linux and open source software to miniaturize the automation components and manufacturing systems that it designs and implements in… (more…)

Abstract

This paper presents the design for the real-time core of a generic real-time signal acquisition, processing and generation system. The design is generic in the sense that it can be used in a wide variation of application domains, from the PLC logic of MatPLC, over medical signal processing in the RT-Lab project, to the robot motion control of the Orocos project. (more…)

Abstract

RTLinux has been focused on developing a POSIX compliant RTOS layer that operates below Linux – within this development communication between RT-threads and kernel as well as user-space have been quite limited, in part due to the inherent restrictions of a RTOS and in part due to the restrictions imposed by POSIX, or rather the combination of these two sets of restrictions. (more…)

Malte Products AB has used embedded Linux, Bluetooth, and cellular data services to develop a wireless system for remote surveillance and control of gas station fuel information, including price signs and tank inventory. The system can communication with an in-store store computer or a handheld computer (PDA) using Bluetooth. (more…)

Abstract

RealBOX is a PC104 form factor computer based on a 486DX2 processor with 8MB RAM and 8MB Disk-On-Chip Millenium. MiniRTL operating system boots from Disk-On-Chip and expands itself to RAM when the power is applied to the box. Our initial aim and the motivation behind our work was to have an embedded system with the following critical requirements which were fullfiled:

• … (more…)

Abstract

This paper describes the process space (user mode) real-time facility on RTLinuxPro. The Process Space Development Domain (PSDD) is available on PowerPC and X86, supports SMP, and has extensive support for developing simulations including a secondary frame or slot scheduler. (more…)

Biotrace Ltd has applied embedded Linux and Open Source Software (OSS) in a Continuous Flow Luminometer for remote monitoring and control of biological activity in cooling water towers. At present, a technician has to visit each site, take a sample, measure it, and introduce a biocide to the water if the biological activity is too high. (more…)