Earth motion alarming instrument

• Main Authors: SU ZIYI, LI YULIN, SU LI
• Format: Patent
• Language: Chinese; English
• Published: 14.08.2013
• Subjects: ALARM SYSTEMS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

The utility model relates to an earth motion alarming instrument, comprising a power supply and an alarm circuit unit. The earth motion alarming instrument is characterized in that a mercury ball movable switch is arranged between and connected with the power supply and the alarm circuit unit, the mercury ball movable switch is composed of a spherical cap-shaped concave object with an upward cross section and a mercury ball arranged on the concave object, the spherical cap-shaped concave object is made from an insulating material, equally spaced metal wire rings are embedded in the concave object, orthographic projections of the metal wire rings are concentric circles with centers of the circles coincident with the central point of the concave object, the metal wire rings are divided into two alternating groups, one group of the metal wire rings is used as a switch positive pole, the other group of the metal wire rings is used as a switch negative pole, and the spherical cap-shaped concave object is disposed