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Design of an Intelligent Front-End Signal Conditioning Circuit for IR Sensors

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7 Author(s)
G. de Arcas ; Univ. Polytech. de Madrid, Madrid ; M. Ruiz ; J. M. Lopez ; R. Gutierrez
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This paper presents the design of an intelligent front-end signal conditioning system for IR sensors. The system has been developed as an interface between a PbSe IR sensor matrix and a TMS320C67x digital signal processor. The system architecture ensures its scalability so it can be used for sensors with different matrix sizes. It includes an integrator based signal conditioning circuit, a data acquisition converter block, and a FPGA based advanced control block that permits including high level image preprocessing routines such as faulty pixel detection and sensor calibration in the signal conditioning front-end. During the design phase virtual instrumentation technologies proved to be a very valuable tool for prototyping when choosing the best A/D converter type for the application. Development time was significantly reduced due to the use of this technology.

Published in:

IEEE Transactions on Nuclear Science  (Volume:55 ,  Issue: 1 )