EARTHQUAKE DETECTING DEVICE

摘要

An earthquake detecting device, comprising a housing, an impulse sensor with an inert mass, a power source, a tone signal block, sensibility adjustment screw, characterized in that the device further comprises a series-connected prime amplifier with a sensibility adjuster, analog-digital converter, a number of storeys regulator, a frequency filter with a vibration analyzer, a light signal block, a manual signalling breaker, a volume regulator in the tone signal block, the control inputs of which are connected via a common busbar to the power source, and the inert mass of the impulse sensor is made in the form of a cylinder axially-arranged inside a cylindrical spiral spring, the cylinder is rigidly fixed from the upper side to a vertical side of an elastic Gamma-shaped element, the horizontal part of which is rigidly connected to one end of the spiral spring, while the other end of which is rigidly connected to the housing via an another elastic element, the length of the vertical part of said elastic Gamma-shaped element exceeds the height of the inert mass cylinder by 3 to 5 times, and the length of its horizontal part exceeds by at least 2.5 times the radius of the inert mass cylinder, a permanent magnet is rigidly fixed on the cylinder bottom adapted to magnetic interaction with an induction coil core, which is rigidly connected strictly vertical to the housing, wherein central axes passing through the centers of the inert mass cylinder and the induction coil core coincide.