Title: Signal processing in the "Zhang Heng Seismograph" for remote sensing of impending earthquakes
Abstract:This paper explains principles of operation of an instrument for remote detection of impending earthquakes. The only prototype of this instrument was constructed in 132 AD by a Chinese mathematical ge...This paper explains principles of operation of an instrument for remote detection of impending earthquakes. The only prototype of this instrument was constructed in 132 AD by a Chinese mathematical genius named Zhang Heng. It is probably reason why this device is presently called Zhang Heng seismograph. But original Chinese name for it was houfeng didongy yi, meaning the instrument for inquiry into fluid and earth movement. The first and only historically well recorded prototype of this instrument operated successfully until death of Zhang Heng in 139 AD. It carried out an analog processing of signals that are emitted by impending earthquakes, and raised alarms before these earthquakes were to strike. This paper elaborates also how analog signal processing of this device could be converted into modern state-of-the-art digital processing and implement on present computer technology.Read More
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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Cited By Count: 1
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