This paper proposes a continuous, non-invasive blood pressure monitoring system concept, which uses a safety microprocessor to connect sensors for building a body sensor network. The changes in Pulse Transit Time (PTT...
ISBN:
(纸本)9781467347358
This paper proposes a continuous, non-invasive blood pressure monitoring system concept, which uses a safety microprocessor to connect sensors for building a body sensor network. The changes in Pulse Transit Time (PTT) can be detected with the sensor network. The microprocessor gathers the PTT and other vital signs of the patient to derive changes in blood pressure. Through the new Bluetooth protocol for safety systems, the current blood pressure value can be sent to a variety of terminals present in the wireless network, such as mobile phone, PC and medical monitoring systems. The 1oo2 architecture of the used microprocessor can provide high safety to a rating of safety integrity level 3 (SIL3), thus the whole network can meet the safety required in medical care systems.
The paper describes a method for keyterm extraction from messages of microblogs. The described approach utilizes the information obtained by the analysis of structure and content of Wikipedia. The algorithm is based o...
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The paper describes a method for keyterm extraction from messages of microblogs. The described approach utilizes the information obtained by the analysis of structure and content of Wikipedia. The algorithm is based on computation of “keyphraseness” measure for each term, i.e. an estimation of probability that it can be selected as a key in the text. The experimental study of the proposed technique demonstrated satisfactory results which significantly outpaces analogues. As a demonstration of possible application of the algorithm, the prototype of context-sensitive advertising system has been implemented. This system is able to obtain the descriptions of the goods relevant to the found keyterms from Amazon online store. Several suggestions are also made on how to utilize the information obtained by the analysis of Twitter messages in different auxiliary services.
In order to measure the effectiveness of safety protection systems there are several design parameters. Diagnostic coverage factor is one of the most important parameter which influences all architectures. In this sho...
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The performance of superregenerative receivers is strongly influenced by the quench signal and it is a well-known fact that specific quench shapes may optimize certain parameters. Using a frequency-domain approach, in...
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The performance of superregenerative receivers is strongly influenced by the quench signal and it is a well-known fact that specific quench shapes may optimize certain parameters. Using a frequency-domain approach, in this paper we investigate the effects that the discretization of the quench signal has on relevant parameters such as the envelope, the frequency response of the receiver or the instantaneous frequency of the supperregenerative oscillator. The effects of different amounts of quench filtering are also investigated. One of the main consequences of quench discretization is the presence of secondary lobes in the frequency response, located at multiples of the sampling frequency.
In order to use electronic systems comprising of software and hardware components in safety related and high safety related applications, it is necessary to meet the Marginal risk numbers required by standards and leg...
In order to use electronic systems comprising of software and hardware components in safety related and high safety related applications, it is necessary to meet the Marginal risk numbers required by standards and legislative provisions. Existing processes and mathematical models are used to verify the risk numbers. On the hardware side, various accepted mathematical models, processes, and methods exist to provide the required proof. To this day, however, there are no closed models or mathematical procedures known that allow for a dependable prediction of software reliability. This work presents a method that makes a prognosis on the residual critical error number in software. Conventional models lack this ability and right now, there are no methods that forecast critical errors. The new method will show that an estimate of the residual error number of critical errors in software systems is possible by using a combination of prediction models, a ratio of critical errors, and the total error number. Subsequently, the critical expected value-function at any point in time can be derived from the new solution method, provided the detection rate has been calculated using an appropriate estimation method. Also, the presented method makes it possible to make an estimate on the critical failure rate. The approach is modelled on a real process and therefore describes two essential processes - detection and correction process.
Due to the complexity of microprocessor, an efficient testing is a crucial point and serious challenge in safety systems. A new instruction opcode for ALU based Built-In-Test (BIT) is proposed in this paper. With this...
Due to the complexity of microprocessor, an efficient testing is a crucial point and serious challenge in safety systems. A new instruction opcode for ALU based Built-In-Test (BIT) is proposed in this paper. With this novel method stuck-at-fault in Multiplexer (MUX) for Arithmetic Logic Unit (ALU) can be determined. A model that consists of the command and faulty states is developed. According to the designed state model, an algorithm and pseudo program that tests the stuck-at-fault in MUX is implemented and described in this paper.
This paper is concerned with the design procedures of an automated testing tool, developed in Matlab®/Simulink® environment, that performs software verification during runtime on a PLC (Programmable Logic Co...
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This paper describes a stereo-imaging system for variable distances. The setup includes a mechanical mount system-holder, a control unit for the correct positioning of the cameras, the cameras itself and the object to...
This paper describes a stereo-imaging system for variable distances. The setup includes a mechanical mount system-holder, a control unit for the correct positioning of the cameras, the cameras itself and the object to capture. The goal of this setup was to achieve a true sense of scale and depth of the filmed material on dynamically variable distances to the object. This demands certain requirements which are usually not necessary for many applications of stereoscopic filming. In the last step, the resulting material is prepared for viewing.
Automatic generation and simulation of test programs is known to be the main means for verifying microprocessors. The problem is that test program generators for new designs are often developed from scratch with littl...
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Verification of Linux kernel modules and especially device drivers is a critically important task. However, due to the special nature of the kernel operation, it is very challenging to perform runtime analysis of part...
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