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. (WO2009125391) EARTHQUAKE DETECTION AND ALARMING APPARATUS

Pub. No.:    WO/2009/125391    International Application No.:    PCT/IL2009/000370
Publication Date: Fri Oct 16 01:59:59 CEST 2009 International Filing Date: Mon Apr 06 01:59:59 CEST 2009
IPC: G01V 1/00
Applicants: NASSER, Habib Jeries
Inventors: NASSER, Habib Jeries
GITELIS, Meir
Title: EARTHQUAKE DETECTION AND ALARMING APPARATUS
Abstract:
In one aspect, the present invention is directed to an earthquake detection and alarming apparatus, comprising: a transparent object (46) having a concave surface on the top thereof; a rollable object (34) placed on the concave surface; an apiary of light projectors (30) placed above the concave surface; an apiary of light receivers (38) correspondingly to the apiary of light projectors, the apiary of light receivers being placed below the concave surface; and circuitry for determining: (a) vibrating frequency and amplitude of the rollable object with reference to the concave surface from sensing of the receivers (38); and (b) deducing therefrom the arrival of primary waves.