Engineering Commons^™

Development Of A Real-Time Single-Lead Single-Beat Frequency-Independent Myocardial Infarction Detector, Harold Martin

FIU Electronic Theses and Dissertations

The central aim of this research is the development and deployment of a novel multilayer machine learning design with unique application for the diagnosis of myocardial infarctions (MIs) from individual heartbeats of single-lead electrocardiograms (EKGs) irrespective of their sampling frequencies over a given range. To the best of our knowledge, this design is the first to attempt inter-patient myocardial infarction detection from individual heartbeats of single-lead (lead II) electrocardiograms that achieves high accuracy and near real-time diagnosis. The processing time of 300 milliseconds to a diagnosis is just at the time range in between extremely fast heartbeats of around 300 …

Research On Dynamic Real-Time Infrared Complicated Scene Generation Technology, Zhifeng Lu, Gao Wen, Zehua Hong, Lai Peng

Journal of System Simulation

Abstract: The dynamic IR scene real-time generation technique is one of the key techniques in IR imaging HWIL simulation. On the basis of the external rendering, the dynamic IR complex scene real-time generation technique was proposed to break through the bottleneck of mutual restriction between imaging fidelity and real-time generation to ensure the real-time performance of the HWIL simulation systems. This technique has no minus effects on imaging fidelity, and moreover, it meets the real-time performance requirements of the HWIL simulation systems. This technique can be applied to the varied IR imaging simulation systems. This research plays an important role …

Real-Time Rendering Of Large-Scale River In Inland River Ship Simulator, Xiaoming Zhai, Yin Yong, Helong Shen

Journal of System Simulation

Abstract: To improve the reality of river visual in inland river ship simulator, a method of rendering large scale river which could be applied for inland river ship simulator was proposed. The river flowing field was built though the conception of stream function, and the algorithm of Poisson disk sampling was used to control the distribution of river flowing field. This could balance the relationship between efficiency and effect of river surface. The parallelism and programmability of GPU was adopt to render river surface. The results show the river flowing field generated by algorithm of stream function can reflect …

Arm-Based Real-Time Video Stabilization Enhancement Algorithm, Xiaoquan Chen, Zhang Lei, Huang Hua

Journal of System Simulation

Abstract: Considering the performance characteristic of ARM processor, an ARM-based real-time video stabilization enhancement algorithm was proposed that identified shakiness of video and implements motion smoothing in the space of geometric transformations. The algorithm identified the shakiness of video with the amplitudes’ change of translation and rotation. Then the optimal path could be obtained by linear interpolation on translational vector and rotational angle. Stable frames were generated by implementing motion compensation of translation and rotation transformations respectively. Because the algorithm used linear interpolation in the space of rigid transformations, it was much faster than the previous algorithms. Moreover, it …

Design And Implementation Of Hardware-In-The-Loop Simulation Dynamic Routing Protocol, Xiaohu Liu, Yuchen Zhang, Qingpo Fang, Leigang Sun

Journal of System Simulation

Abstract: Against the problem of dynamic routing in network Hardware-In-The-Loop Simulation, on the basis of analysis of network HITL simulation principle, a dynamic routing protocol implementation scheme based on OMNeT++ was proposed. A method of routing message transform and a algorithm of time slice synchronize was proposed, overcoming the problem of routing message transform and system real-time. At the same time, using virtual IP technology for multi-host configuration, and OSPF dynamic routing protocol, the Hardware-In-the-Loop Simulation Dynamic Routing Protocol based on OMNeT++ was realized. The dynamic routing protocol with multi scenarios was verified and tested.

Software Design And Implementation For Visualization System Automatic Optimization With Incorporation Of Feedback And Prediction, Xiaodong Wang, Fengju Kang, Gu Hao

Journal of System Simulation

Abstract: To develop high-fidelity and real-time visualization system, the problem of automatic optimization software of visualization system was brought forward. By analyzing the whole development process of visualization system, the attraction method of 3D models significance degree in final rendering image based on bounding box was designed. Combining with the prediction of efficiency of the rendering pipeline, the algorithm with incorporation of feedback and prediction for level of detail (LOD) selection was designed, and the interface and framework of the automatic optimization software were established, which implemented it with C++ programing language. The automatic optimization software implemented above was …

Research On Network Emulation Method Based On Shared Library Integration, Mingqing Zhang, Leigang Sun, Hongshan Kong, Xianqing Qi

Journal of System Simulation

Abstract: For the high-risk, high-cost to test equipments in real network and the poor accuracy of software simulation, network emulation method was introduced; the integration between real application and simulation system is the key technology. According to the mapping principle between real device and virtual network, a network emulation model framework was proposed; the OMNeT++ simulator on the source code lever was designed; the network emulation method based on shared library integration was proposed; the problems of thread error, time distortion and symbolic space in the process of integration were discussed, and corresponding solutions were given; the correctness …

Meta Modeling Methodology For Cnc System, Suhua Xiao

Journal of System Simulation

Abstract: Methodology development of CNC system takes the field as a carrier centric model, which applies UML / OCL in GME for CNC system meta-modeling. For the field characteristic analysis for CNC, a CNC field oriented CNCVFC meta-modeling methodology was proposed, which combined the view, feature, component three-dimensional relationship. According to field characterization CNC members and interactions, multi-view approach captures features CNC field was adopted, which mapped to the appropriate view plane to establish the appropriate view of the container field meta-model, CNC elaborated meta-modeling process, including structural meta-modeling, function meta-modeling and non-functional meta-modeling of three areas. A …

Human Facial Emotion Recognition System In A Real-Time, Mobile Setting, Claire Williamson

Honors Theses

The purpose of this project was to implement a human facial emotion recognition system in a real-time, mobile setting. There are many aspects of daily life that can be improved with a system like this, like security, technology and safety.

There were three main design requirements for this project. The first was to get an accuracy rate of 70%, which must remain consistent for people with various distinguishing facial features. The second goal was to have one execution of the system take no longer than half of a second to keep it as close to real time as possible. Lastly, …

Gcps Adaptive Scheduling Model Based On Cooperative Executor, Zhang Jing, Chen Yao, Sun Jun, Hongbo Fan

Journal of System Simulation

Abstract: Aiming at the problem that the uncertainty of grid cyber physical systems leads to chain failure, an adaptive GCPS dispatching model based on co-actuator is established. First, the constraint conditions of the system are analyzed. A model constraints of GCPS system is presented to describe the constraint conditions of the power system, and it is proved that it meets the consistency of the measure and representing methods. Second, the optimal value of approximation error is solved by PILOT, and the framework of CA-SADM is described. Finally, the performance index, output power accuracy and the influence of fault on the …

Low-Cost Hardware-In-The-Loop Flight Simulation System, Chuanyan Tian, Junzhao Hu, Jikui Liu, Qianlong Yang

Journal of System Simulation

Abstract: Hardware-in-the-loop simulation is an effective way and experimental method to evaluate and verify the performance of the aircraft system. To satisfy the requirements of real-time, scalability, high reliability simulation of a certain aircraft control system, a new design of low-cost hardware-in-the-loop real-time scene simulation system consisted of IPC, DSP, three-axis turntable, steering engine and visual simulation computer was put forward. Real-time simulation system software composed by flight control simulation module, aircraft movement simulation module and scene simulation module was implemented, and it resolved the difficulties in real-time, data synchronization, multiple node communication of simulation system. Comparison with …

Real-Time Collision Detection Of Coastline In Navigation Simulator, Qianfeng Jing, Helong Shen, Yin Yong, Xiuwen Liu

Journal of System Simulation

Abstract: In order to develop real-time collision detection module of coastline in navigation simulator, a mesh preprocessing method for coastline data is applied. The principle of meshing is established and the coastline data is meshed based on the clipping algorithm. The mesh data is stored into an appropriate data structure. The collision detection algorithm and test program are developed based on Microsoft Foundation Classes (MFC). The ship contour points and the mesh expansion method are applied to avoid error in special cases which could also improve the accuracy of collision detection. The results show that the method reduces much time …