Systems modeling and requirements specification using ECSAM: a method for embedded computer-based systems analysis

2004 ◽  
Author(s):  
J.Z. Lavi ◽  
J. Kudish
Keyword(s):  
Systems Analysis ◽  
Requirements Specification ◽  
Systems Modeling ◽  
Embedded Computer ◽  
Computer Based

Design of a Prototype for Vision Prosthesis

2018 ◽  
Vol 7 (2) ◽  
pp. 1-13
Author(s):  
V. Bhujanga Rao ◽  
P. Seetharamaiah ◽  
Nukapeyi Sharmili
Keyword(s):  
Visual Information ◽  
Ganglion Cells ◽  
Electrode Array ◽  
Laboratory Model ◽  
Electric Pulses ◽  
Embedded Computer ◽  
Field Of Vision ◽  
Led Array ◽  
Electrical Pulses ◽  
Computer Based

This article describes how the field of vision prostheses is currently being developed around the world to restore useful vision for people suffering from retinal degenerative diseases. The vision prosthesis system (VPS) maps visual images to electrical pulses and stimulates the surviving healthy parts in the retina of the eye, i.e. ganglion cells, using electric pulses applied through an electrode array. The retinal neurons send visual information to the brain. This article presents the design of a prototype vision prosthesis system which converts images/video into biphasic electric stimulation pulses for the excitation of electrodes simulated by an LED array. The proposed prototype laboratory model has been developed for the design of flexible high-resolution 1024-electrode VPS, using an embedded computer-based efficient control algorithm for better visual prediction. The prototype design for the VPS is verified visually through a video display on an LCD/LED array. The experimental results of VPS are enumerated for the test objects, such as, palm, human face and large font characters. The results were found to be satisfactory.

Design of a Prototype for Vision Prosthesis

2021 ◽  
pp. 492-505
Author(s):  
V. Bhujanga Rao ◽  
P. Seetharamaiah ◽  
Nukapeyi Sharmili
Keyword(s):  
Visual Information ◽  
Ganglion Cells ◽  
Electrode Array ◽  
Laboratory Model ◽  
Electric Pulses ◽  
Embedded Computer ◽  
Field Of Vision ◽  
Led Array ◽  
Electrical Pulses ◽  
Computer Based

This article describes how the field of vision prostheses is currently being developed around the world to restore useful vision for people suffering from retinal degenerative diseases. The vision prosthesis system (VPS) maps visual images to electrical pulses and stimulates the surviving healthy parts in the retina of the eye, i.e. ganglion cells, using electric pulses applied through an electrode array. The retinal neurons send visual information to the brain. This article presents the design of a prototype vision prosthesis system which converts images/video into biphasic electric stimulation pulses for the excitation of electrodes simulated by an LED array. The proposed prototype laboratory model has been developed for the design of flexible high-resolution 1024-electrode VPS, using an embedded computer-based efficient control algorithm for better visual prediction. The prototype design for the VPS is verified visually through a video display on an LCD/LED array. The experimental results of VPS are enumerated for the test objects, such as, palm, human face and large font characters. The results were found to be satisfactory.

Research and Design Embedded Security Computer Based on TMR for Train-Ground Communication System

2012 ◽  
Vol 178-181 ◽  
pp. 2673-2679
Author(s):  
Xiao Qing Zeng ◽  
Jing Zhu ◽  
Tian Sheng Xiong ◽  
Tuo Shen ◽  
Le Xiang Wei
Keyword(s):  
Computer System ◽  
Communication System ◽  
Electromagnetic Compatibility ◽  
Safety Standards ◽  
Infrared Communication ◽  
Security Technologies ◽  
Embedded Computer ◽  
Computer Based ◽  
Modular Redundancy ◽  
Embedded Security

Train-Ground communication system is mainly used to complete the communication between the train and the ground, the data which is produced by security computer system is vital to safe operation. The paper focus on the reliability and security technologies of embedded computer system and evaluates the reliability of TMR (Triple Modular Redundancy), which is based on the existing research of security computer and aimed on the equipment of CBTC Train-Ground communication system. The technology of CBTC Train-Ground communication is studied and the structure of the TMR for Train-Ground communication system is designed in the paper. Furthermore, the fault - safety circuits，electromagnetic compatibility technology and rail traffic-related safety standards are analyzed. Finally, the Train-Ground infrared communication security transponder system based TMR is applied to Shanghai People's Square Line 8 subway train’s double-door control system.

The use of operational research and systems analysis in decision making in Unilever

1977 ◽  
Vol 287 (1346) ◽  
pp. 487-492
Keyword(s):  
Systems Analysis ◽  
Operational Research ◽  
Financial Models ◽  
Scientific Interest ◽  
Long Term Effects ◽  
Telecommunications Network ◽  
Computer Based ◽  
Balance Of Interest ◽  
Wild Life

An organization as big as Unilever (1975 sales were £7000 million) needs to consider the balance of interest between shareholders, employees, customers, government and the environment. Many routine decisions are computerized and no longer of scientific interest. The talk will be concerned with some more complex problems. Decision trees are being used on investment and withdrawal problems. Systems analysis helps us to study the long-term effects of effluents on wild life in rivers. We have the world’s largest private telecommunications network so that managers can have access to current information and we have computer based financial models to enable us to explore the effects of decisions on cash and profit flows.

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