| 摘要 |
This invention relates generally to earthquake detectors, and specifically to the use of a plurality of vertically and/or horizontally fixed-position acoustic elements, such as tubular bells or chimes radially disposed in spaced-apart relationship around their own striker pendulum to emit sounds audible to a human in the event of an earthquake. In one embodiment of the present invention there is disclosed a combination vertically- and horizontally-oriented earthquake detection system comprising: a frame structure, one or more vertical acoustic units, and one or more horizontal acoustic units. The acoustic units employ a plurality of acoustic elements radially disposed (either in horizontally or vertically) about a pendulum striker device. Other embodiments include a vertically-oriented earthquake detection system employing only vertical acoustic units, and a horizontally-oriented system employing only horizontal acoustic units. The system moves with the earthquake movements to cause interplay between the striker and the acoustic elements. |
