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An online health monitoring system (OHMS) was tailor-made and implemented for structural health monitoring (SHM) of train structures. A sensor network made up of miniature piezoelectric wafers was configured on the bogie frames of China's latest high-speed train model. Ultrasonic guided waves were generated through the sensor network, and a variety of signal features were retrieved and fused by the...
Real-time tele-monitoring technology is very useful for remotely monitoring patients' vital parameters and for ensuring mobility of both patient and doctor. In this paper a multi-purpose and multi-parametric tele-monitoring system is described. This system is based on the offline automatic extraction of knowledge from databases expressed as a set of IF…THEN rules that are used by a rule-based mobile...
In the product development life-cycle of hard-real-time embedded systems, software verification plays a very important role. During verification, a Hardware-In-Loop (HIL) testbed is used to test the key properties of the software, namely, schedulability, concurrency and timeliness, by exercising and monitoring the interfaces of the Design Under Test (DUT). Often, building a testbed to test these properties...
This paper presents validation experiments performed on a Phasor Measurement Unit (PMU) based fast oscillation detection application. The monitoring application focuses on the detection of sub-synchronous oscillations, utilizing real-time measurements from PMUs. The application was first tested through Hardware-In-the-Loop (HIL) simulation. Validation experiments were carried out with a different...
In this paper we present CAT Record - a real time computer forensics agent that records computer activity for subsequent forensic investigation on a Windows computer system as actions are taking place on a system. This approach is different from the traditional post-mortem approach of examining a hard disk since activities are being recorded as they are happening. The prototype agent included six...
This article provides an overview of a monitoring application, its testing and validation process. The application was developed for the detection of sub-synchronous oscillations in power systems, utilizing real-time measurements from phasor measurement units (PMUs). It uses two algorithms simultaneously to both detect the frequency at which the oscillatory event occurs and the level of energy in...
This paper is a case study of the design process and validation of a simple and effective solution to satisfy the North American Electric Reliability Corporation (NERC) PRC-005 protection system maintenance program (PSMP) requirements. The example solution is a protection system monitoring (PSM) application for an in-service system at a hydroelectric generating station. This PSM system uses simple...
Service Oriented Architectures (SOAs) are composed of distributed services that interact through standard interfaces, and evolve transparently to other services and users. Although such dynamicity makes SOA a promising architectural style, it prevents organizations from having complete knowledge of the SOA and of its (possibly untrusted) services. This constitutes an important restriction to the applicability...
Research efforts have been gradually invested in online automatic business system health-checking in order to improve enterprise business capability in real-time. The paper proposes a service-based framework to automatically check the health situation of business execution in online way. Based on enterprise organizational behavior analysis, paper establishes collaborative health-checking system by...
In IPv4 and IPv6 network, there are especially shortages of Application Performance Monitor system, which can help system owners to monitor and diagnostic system performance and provide warning message. In the paper, we have designed and implemented a SIP service monitoring scheme (SSMS) that includes a Service Detection System (SDS) and Real-time Alert System (RAS). The Service Detection System simulates...
The presentation concerns a practical approach for dealing with difficulties associated to real time testing in a natural environment of microelectronic devices. This activity has several redeeming characteristics that make it very interesting for reliability engineers that are concerned with the Single Event Effects (SEEs) affecting the functioning of their devices in a natural working environment...
Due to the proliferation of technologies and services related with wireless sensor network, various sensor network applications are being appeared on the stage and a lot of sensor network testing technologies are being studied. However, most of testing systems or testbeds have objective for test and evaluation of sensor network protocols. For testing sensors and evaluating signal processing algorithms,...
The micro-satellite cluster that integrates micro-satellite techniques, command and control techniques, sensor techniques and wireless communication techniques can cooperate with each other to complete high complex missions, and has become an important research area. This paper systematically describes micro-satellite cluster's characteristics, and then presents distributed testbed to shorten test...
The increasing trend toward complex software systems has highlighted the need to incorporate quality requirements earlier in the development process. Reliability is one of the important quality indicators of such systems. This paper proposes a reliability analysis approach to measure reliability in the early development of real-time reactive systems (RTRS). The goal is to provide decision support...
The real time monitoring and control of resistance spot welds is a problem of critical importance in automotive and many other manufacturing industries. However, till this date, there are no reliable, low-cost, non-destructive techniques for predicting the size and strength of the weld nuggets in real time. This paper investigates the usage of voltage, current, and force data for the above tasks....
Summary form only given. Tools that feature MSC do not have the ability to check model or implementation executions against the specified behavior. We present a method for observing the behavior of timed systems specified using Message Sequence Chart Graphs (MSC-Graphs) (a simplified version of ITU Z.120 notation). We believe that a log-analyzer and a run-time monitor based on MSC-Graphs are practical...
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