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A DIGITAL ACCELEROGRAPH WITH AN OPTICAL SEISMOMETER

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
14499
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
14499
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
OPTRA, Inc
461 Boston Street Topsfield, MA 01983-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: A DIGITAL ACCELEROGRAPH WITH AN OPTICAL SEISMOMETER
Agency: DOE
Contract: N/A
Award Amount: $49,990.00
 

Abstract:

THE OBJECTIVE OF THIS PROJECT IS TO DEVELOP A NEW TYPE OF OPTICAL SEISMOMETER TO BE INCORPORATED INTO A RELIABLE, LOW-COST, DIGITAL ACCELEROGRAPH. THE OPTICAL SEISMOMETER USES NEWLY DEVELOPED NONCONTACT DISPLACEMENT-SENSING TECHNOLOGY TO MONITOR THE RELATIVE MOTIONS OF A SEISMIC MASS. THE NEW SENSOR WHICH USES LOW-COST, MASS-PRODUCED OPTICAL COMPONENTS, HAS A SENSITIVITY EQUIVALENT TO THAT OF EXISTING STATE-OF-THE-ART CAPACITIVE SEISMOMETERS WITHOUT THE REQUIREMENT FOR FORCE FEEDBACK. THE INTERFEROMETRIC DISPLACEMENT SENSOR HAS LINEARITY AND RESOLUTION OF LESS THAN 1 NM WITH A RANGE GREATER THAN 5 CM FOR A DYNAMIC RANGEEXCEEDING 150 DB. THE REMOTE OPTICAL DISPLACEMENT MEASUREMENT ALLOWS GREATER THERMAL ISOLATION THAN WITH EXISTING SENSORS. THE SENSOR DIRECTLY PRODUCES A 32-BIT OUTPUT WORD PROPORTIONAL TO DISPLACEMENT. THE NEW SEISMOMETER BEING DEVELOPED IN PHASE I IS COMPACT, ROBUST, AND INEXPENSIVE AND HAS LOW POWER CONSUMPTION. PLANS FOR PHASE II ARE TO INCORPORATE THE NEW SEISMOMETERS INTO A DIGITAL ACCELEROGRAPH SYSTEM. THE INHERENT HIGH RESOLUTION DIGITAL OUTPUT OF THE DISPLACEMENT EASES THE DATA CONVERSIONREQUIREMENTS. A FEW INEXPENSIVE DIGITAL LOGIC AND MEMORY INTEGRATED CIRCUITS ARE TO BE CONFIGURED TO PROVIDE ALL THE REQUIREMENTS FOR SEISMIC MONITORING. THE DEVELOPMENT PROJECT WILL PRODUCE AN ACCELEROGRAPH THAT HAS SIGNIFICANT ADVANTAGES OVER EXISTING EQUIPMENT IN COST, DYNAMIC RANGE, AND EASE OF USE.

Principal Investigator:

Andrew Lintz
Principal Investigator
0

Business Contact:


5089212100
Small Business Information at Submission:

Optra Inc
66 Cherry Hill Drive Beverly, MA 01915

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No