Patent ID: 7990806

Claim:
A seismograph system comprising: a seismometer comprising a micro electro-mechanical system accelerometer and a micro electro-mechanical system gyroscope; a positioning unit; a transmitter; and a remote processing device, the seismometer, the positioning unit, and the transmitter being located at a detecting site, the micro electro-mechanical system accelerometer being configured for measuring an acceleration of the movement of the earth at the detecting site, the micro electro-mechanical system gyroscope being configured for measuring an angular velocity of the movement of the earth at the detecting site, the positioning unit being configured for providing a location at the detecting site, the transmitter being configured for transmitting information associated with the measured acceleration, the measured angular velocity, and the provided location to the remote processing device, the remote processing device being positioned at a remote site and configured for analyzing the measured acceleration, the measured angular velocity, and the provided location; wherein the micro electro-mechanical system gyroscope comprises a substrate and a silicon film formed on the substrate, the silicon film comprises a main base portion, a main cantilever portion, a pair of secondary base portions, a pair of secondary cantilever portions, and a pair of weight portions, the main base portion is rectangular and connected to the substrate, the main cantilever portion is rectangular and extends away from the middle of a long edge of the main base portion along a direction parallel to the width of the main base portion, the two secondary base portions, secondary cantilever portions, and weight portions are symmetric about an axis passing through the centers of the main base portion and the main cantilever portion, the secondary base portions are rectangular and connected to the substrate, the lengths of the secondary base portions are generally parallel to that of the main cantilever portion, the secondary cantilever portions are strips extending from ends of the corresponding secondary base portions adjacent to the main base portion along the length of the secondary base portions, and the two weight portions are suspended from the secondary base portions via the secondary cantilever portions.