Abstract
Recently, in the field of geological exploration, electromagnetic instruments have been tremendous growth, but they also have some typical shortcomings, such as big size, large power consumption, complex operation and so on. Therefore, base on the current development of electronic technology, this paper has discussed hardware and software design of the electromagnetic data acquisition system, which makes use of 24-bit Σ-Δ analog to digital converter AD7763, field programmable gate array, ARM9 processor S3C2440 and embedded Linux operating system. The system has high accuracy, small size and low power consumption, can be applied to a number of occasions.
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