A prototype 1024 electrode embedded computer based Epiretinal Prosthesis System

2016 ◽  
Author(s):  
N. Sharmili ◽  
V. Bhujanga Rao ◽  
P. Seetharamaiah ◽  
N. Swapna
Keyword(s):  
Embedded Computer ◽  
Computer Based ◽  
Epiretinal Prosthesis

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.

scholarly journals USO DE LINGUAGEM C++ EM COMPUTADOR EMBARCADO DE ALTA CAPACIDADE PARA EFICIENTIZAÇÃO ENERGÉTICA EM TRATORES

2018 ◽  
Vol 17 (2) ◽  
pp. 340
Author(s):  
DEIVITY DO CARMO SANTOS ◽  
EVANDRO CHARTUNI MANTOVANI ◽  
ALÍPIO MONTEIRO BARBOSA ◽  
WALTER LUIZ DE CASTRO MEWES
Keyword(s):  
High Performance ◽  
High Capacity ◽  
Operational Conditions ◽  
Embedded Computer ◽  
Agricultural Mechanization ◽  
C Programming ◽  
Computer Based ◽  
Electronic Instrumentation ◽  
Capacity Acquisition ◽  
Energetic Performance

 Resumo: A utilização de tratores e implementos agrícolas é amplamente difundida em todos os tipos de cultura, atendendo às necessidades das diferentes escalas de produção das propriedades rurais. Um dos principais desafios inerentes ao uso desse tipo de equipamento é a dificuldade de aperfeiçoar seu emprego, estabelecendo-se condições de operação, que propiciem o equilíbrio entre a alta capacidade de trabalho que a mecanização agrícola proporciona, o consumo adequado de energia e a sustentabilidade da área de produção. Este trabalho descreve as etapas de implementação de um sistema de aquisição de dados e visa avaliar o desempenho energético de um conjunto trator-implemento, utilizando um computador de placa única baseado na arquitetura ARM e sensores diversos. Algoritmos foram escritos em linguagem de programação C++ a fim de obter os sinais provenientes de cada um dos sensores e trata-los conforme sua natureza e grandeza física a ser mensurada. Após a etapa de programação, os sensores foram individualmente testados e calibrados em bancada e, posteriormente, o sistema como um todo foi testado no conjunto trator-implemento. O sistema mostrou-se uma ferramenta válida para auxiliar na tomada de decisão em operações de campo envolvendo máquinas agrícolas.Palavras-chave: mecanização agrícola, instrumentação eletrônica, sistemas embarcados. HIGH CAPACITY EMBEDDED COMPUTER WITH C++ FOR EVALUATING TRACTOR PERFORMANCE AT FIELD  Abstract: Agricultural machinery and implements have been widely used in all crops, supporting the needs of several productive scales. One of the main challenges to the use of such equipment is the difficulty of optimizing its usage, establishing operational conditions that allow the balance between the high performance provided by agricultural mechanization and the sustainability of the planting area. This paper describes the steps in implementing a high capacity acquisition system that allows evaluating the energetic performance of a set of tractor-implement using a single-board computer based on ARM architecture and sensors. The C++ programming language was chosen to implement the algorithms that read the signals provided by sensors and treat them according to the measured physical quantity. Thereafter, the sensors were individually tested in the laboratory and also at field with all sensors connected to the embedded computer. The system proved to be a valid tool to aid in decision making in operations with agricultural machinery.Keywords: agricultural mechanization, electronic instrumentation, embedded systems.

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