Rozica Moga

Embedded platform for Web-based monitoring and control of a smart home

This paper presents the architecture of a low cost embedded platform for Web-based monitoring and control of a smart home. The platform consists of a distributed sensing and control network, devices for access control and a residential gateway with touch-screen display offering an easy to use interface to the user as well as providing remote, Web based access. The key issues related to the design of the proposed platform were addressed: the problem of security, the robustness of the distributed control network to faults and a low cost hardware implementation.

A hierarchical implementation of medical data transmission

The paper presents different ways of transmitting biomedical signals, depending on the transmissionpsilas range. Thus, the new wireless technologies, combined with the data transmission within a local area network (LAN) or the internet, will contribute to a better health-care system developing.

EMG Signals Case Study: A Time and Frequency Domain Analysis

The paper aims to analyze the time and frequency domains of EMG signals coming from healthy patients and from patients with muscular disorders (muscular myopathy and neuropathy). The study of these signals can reveal some features in time domain or in frequency domain, that can serve as a basis for diagnosis.

Hand prosthesis simulation developped in the virtual instrumentation technique

The present study proposes an artificial upper limb prosthesis simulation that combines elements of electric engineering (sensors, data acquisition / transfer, servo-motors) and virtual instruments programming technique (LabVIEW). Since we are in the process of working on a prototype of the prosthesis, the paper presents a model that enables the movement of a single phalanx, operated by a LabVIEW program. This program controls the servo-motor rotation, by using the data acquired by the Arduino board.

Modeling and control of the temperature for cytostatic solutions used in surgical procedures

The paper presents an original approach for the cytostatic solution temperature modeling and control. In order to determine a mathematical model with high level of validity for the heating process, an original experimental identification procedure is applied, based on fractional-order operators. The main advantages of the resulted model are highlighted in the paper in a comparative manner with some models obtained through classical procedures. The controller tuning is made both considering a simple feedback structure and considering an Internal Model Control strategy. Also, both classical and fractional-order forms of the controller are determined. As a research conclusion, the control structure and the controller which generate the best performance are selected in order to be implemented in an innovative Hyperthermic Intraperitoneal Chemotheraphy equipment.

Sensing and Control Strategies in Tracking Solar Systems

The paper addresses the sensing and control strategies for dual axis tracking solar concentrators appropriate for solar power systems used for cooling and heating. The constructive structures are introduced together with the remote monitoring architectures appropriate for characterizing the operation of such solar systems. Fundamental positioning structures and tracking principles are analyzed and the common sensing and control strategies are reviewed. Finally, an analysis of performance and nonidealities of a sensing structure is made, indicating solutions for optimal performance.

Structured Light Based Imaging Architecture for Guided Fracture Reduction

This paper introduces a structured light based imaging architecture able to serve for the development of an affordable guided fracture reduction system. The 3D models of the bones in the healthy limb are used for the preoperative alignment of the proximal and distal segments of the fractured bone using algorithm for automated registration. A structured light setup performs the reconstruction of 3D information needed for the intraoperative guidance in order to support the fracture reduction in accord with the preoperative alignment.

Application of Virtual Instrumentation for Transmitting and Processing ECG Signals

The paper aims to emphasize the possibilities offered by Virtual Instrumentation (LabVIEW) in the field of biomedical engineering. Thus, it proposes a low cost and flexible wireless transmission (between two equipments) and ECG signals processing architecture. Since during acquisition the signal may be corrupted by noise, in the first stage of the application the signal is filtered by implementing a designed mean averaged filter, followed by a Butterworth filter. The second stage of the application is represented by the infrared transmission of the signal between two infrared “in range” compatible devices. Finally, for an accurate R-peak detection, the Pan-Tomkins algorithm was implemented.

LOW COST MONITORING ARCHITECTURE FOR VIBRATION BASED SYSTEMS HEALTH MANAGEMENT

Abstract A low cost solution is proposed for measuring the vibrations induced by rotating parts. Attaching very sensitive acceleration sensors allows measuring these vibrations. The signal acquired from the sensors will present a periodic behaviour which is correlated to the rotational speed of the axle. Beside the indication of the RPM of the axle, more detailed information can be extracted using signal processing techniques in order to determine the signatures associated with specific faults.