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   SmartSeis SE Underground Seismic Imaging System


O
SmartSeis™ SE  pertence a uma nova geração de sismógrafos, baseada na última tecnologia de computação disponível e foi projetado para facilitar o mapeamento do subsolo.
O equipamento pode ser configurado para operar com 12 ou 24 canais.
O SmartSeis™ pode ser utilizado para um grande número de aplicações, entre elas: profundidade até à rocha básica, levantamento da possibilidade de cisalhamento, localização de lençóis freáticos, investigação do estado de fundações, estudos de desmoronamento de taludes, localização de dejetos poluidores, localização de falhas geológicas, estratigrafia, detecção de cascalho, exploração mineral, hidrologia, delimitação de aterros, mapeamento de camadas carboníferas, determinação da velocidade de ondas de cisalhamento e análise de ondas superficiais

    

O SmartSeis™ SE é muito fácil de ser usado pois utiliza técnicas avançadas que permitem a  aquisição automática de dados de alta qualidade. A capacidade interna de processamento permite a obtenção de respostas preliminares ainda no campo. O SmartSeis™ SE é equipado com um circuito que mede, continuamente, o sinal sísmico e ajusta o ganho do amplificador para o nível ideal. Na maioria dos casos, basta usar uma marreta como fonte de sinal e somar os impactos seqüenciais para aumentar a profundidade efetiva de penetração.
O visor de cristal líquido de 640x480 pixels permite visualizar a chegada dos primeiros sinais, mesmo sob a luz direta do sol. Os vários filtros digitais e selecionáveis do SmartSeis atuam em tempo real para eliminar as interferências produzidas por linhas de transmissão, vento e ondas superficiais, estendendo, de forma significativa, a profundidade alcançada e a capacidade refletiva. 
A plotadora embutida no equipamento pode fornecer uma cópia do registro em papel.Os dados são registrados junto com os parâmetros de aquisição, a geometria da linha e até a data e a hora da obtenção, para correlação posterior com as anotações de campo.
 

  SmartSeisTM SE Exploration Seismograph - Características

 

·     Instrumento compacto, à prova d’água, com visor de cristal líquido visível à luz do sol, impressora interna e software para análise integrada, compatível com pc.

·     Seleção automática de ganho para obtenção, sempre, de dados de ótima qualidade.

·       Possibilidade de realçar o sinal, permitindo o uso de fontes fracas, como uma marreta, em locais onde o nível de ruído é alto.

·      O software contém menus que facilitam a instalação inicial e a operação.

·     No modo de monitor interno de ruído, é possível ver se a qualidade dos dados é boa, antes de prosseguir com o levantamento.

·     Filtros agem automaticamente sobre os dados adquiridos e mostrados no visor, permitindo reduzir o ruído de fontes indesejáveis.

·     Leve, de baixo consumo e portátil.

·     12 ou 24 canais

Processamento de dados em tempo real para obtenção de resultados no campo (veja abaixo)



 

  Download prospecto SmartSeis SE
 

Usando o smartseis, é fácil ver o que está no subsolo:

1.   A chegada dos primeiros sinais pode ser mostrada, automaticamente, no visor do sismógrafo e o equipamento permite  ainda mudar a seleção feita pelo computador.

2.   São calculadas curvas de tempo de propagação do disparo para garantir que a cobertura do subsolo seja suficiente.

3.   O sismógrafo designa as camadas preliminares, que podem ser alteradas pelo operador

O sismógrafo gera,  automaticamente,  uma seção da velocidade numa versão do SIPT, que é um programa de interpretação de refração da  Rimrock Geophysics, bastante conhecido e utilizado. A seção é impressa pela plotadora térmica de alta resolução  embutida no smartseis. A Geometrics também fornece uma versão completa do software de interpretação de refração SIPT, semelhante à usada nos PCs das firmas. A versão completa permite visualizações múltiplas, geometrias especiais e a plotagem a cores das seções.

 

     Specifications - SmartSeisTM SE Exploration Seismograph

 

Number of Channels:  12 or 24

Energy Sources:  Hammer, weight drop, or explosives

Record Length:  up to 24,000 samples.

Sample Interval:  Selectable among 31, 62, 125, 250,500 1000 and 2000 microseconds

Display:  High resolution 640x480 LCD, PC compatible. Visible in bright sunlight.

Noise Monitor:  Waterfall style moving trace, also shows channel continuity and geophone performance

A/D Conversion:  18-bit A/D, 32 bit result

Pretrigger Memory:   allows viewing of data before trigger.

Gain Control:  Automatic, set by continuously measuring two stage instantaneous floating point amplifier. True amplitude is preserved and can be used for ground motion studies.

Data Display:  Wiggle trace, shaded or variable are, trace clipping, automatic gain control, fixed gain and post  acquisition filtering included.

Plotter:  Built-in four inch (11 cm) wide thermal printer.

Interfaces:  RS-232, video, keyboard and printer.

Pretrigger Delay:   Allows viewing of data before trigger for troubleshooting and monitoring .0 to 9999 ms in 1 ms increments

Data Storage:  sufficient for several days recording. Includes both floppy and hard disk storage.

Filters and Noise Reduction Technology:

  • 32-bit stacking: Reduces contributions from random noise.

  • Memory Freeze: Allows selective stacking of weak channels.

  • Low cut filtering: Reduces the effects of traffic noise.

  • High cut filtering: Removes wind noise. Filters can be run in real-time after data is collected, making costly repeated shots unnecessary.

    • Low Cut:  25, 35, 50, 70, 100, 140, 200, 280, and 400 Hz

    • High cut: 250, 500, and 1000 Hz.

    • Power Line Notch: 50, 60, 150, and 180 Hz.

    • Anti-alias: Automatic

    • Custom Filter Frequencies Available

In-field Processing:  

  • Automatic first arrival picking with manual override.

  • On-screen travel time plots.

  • Automatic layer assignment with manual override.

  • Automatic calculation of depths below shots and geophones. Program ray traces the data and indicates where data quality might be poor. Prints table of all data, depth calculations and a quality control plot showing questionable data. Report ready cross section with rock velocities printed last. Analysis and interpretation software from Rimrock Geophysics.

 

Environmental:  Operates from -5C to 40C, boots from 5C to 40C.

Mating Connectors:   NK-27-21C, 12 channels per connector. 

    

  Prospecto Sismógrafo - SmartSeis SE  
 


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         sismógrafos                                             SmartSeis SE                        
 

 

 

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