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Seismic

Seismic Solutions from Texas Instruments.

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-Data Conversion -PGA -MUX Amplification + Conversion Clock RS232/RS485 AC/DC Supply Battery Charger Sensor Power Core & I/O Power Processor Reference Low Power Wireless

Design Considerations

Oil exploration, earthquake detection, and acoustic monitoring of drilling operations are all applications that use seismic sensing capabilities. Hydrophones and geophones are commonly used to measure seismic disturbances of the earth. Such applications require signal conditioning of the input of a geophone, hydrophone, or other acoustic sensor, which demands effective amplification, filtering, and digitization of the target acoustic signal.

These signals are typically low to very-low frequency, varying from large to very small signals and at times are in the presence of large input common mode voltages. Because of these conditions and the need to often extract very low-level information from the measured signal, a very wide dynamic range data acquisition system is needed. Very low-noise front-end amplifiers are required to measure and amplify the outputs from the hydrophone or geophone and to match the input range of the analog-to-digital converter (ADC).

In addition to the low-noise requirements of the input amplifier, the ADC also requires very high dynamic range and very high linearity. Given that these systems are often used to measure the data from the hydrophone or geophone over very long periods, stability of the measurement system is critical. Many systems are battery operated and so low power is a high priority in these systems. An ideal seismic sensing system has the characteristics of good signal-to-noise ratio, low power consumption (to allow for remote operation), programmable signal filtering (to accommodate several applications), variable sampling, and cost-effectiveness.

Application Notes

Most useful technical documents for Seismic Help

     

Selection and Solution Guides

Most useful technical documents for Seismic Help

Selection Guides

Solution Guides

Tools and Software

Name Part # Company Software/Tool Type
Code Composer Studio Integrated Development Environment (IDE) - v4.x CCSTUDIO Texas Instruments Code Composer Studio(TM) IDE
MSP430 USB Stick Development Tool EZ430-F2013 Texas Instruments Development Boards/EVMs
MSP430F5438 Experimenter Board MSP-EXP430F5438 Texas Instruments Development Boards/EVMs

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