DISPLACEMENT SENSOR Russian patent published in 2019 - IPC G01L1/10 

FIELD: electricity.

SUBSTANCE: invention relates to electrical measurements of non-electrical values, particularly displacement, and can be used in monitoring systems of technical state of buildings and structures. Movement sensor comprises housing with measuring element in form of string with constant tension, movable element receiving movement and with the help of tie-rods, connected to the first tip, made in the form of hollow cylinder with holes in the cylinder end faces, in which the string is installed with the possibility of moving along the sliding fit, extracting constant-length string section inside the cylinder, on the cylinder generatrix in its middle part the first string tension converter is placed into the electric signal, under the first and the second string working sections located outside the cylinder of the first tip, the second and the third converters of the measured value are placed into the electric signal, wherein the second transducer is fixed on the displacement sensor housing, encapsulation of the sensor housing is performed due to the bellows. Movement sensor is equipped with a second movable tip in the form of a hollow cylinder with a ratchet-type ratchet fixed on it, the pawl and pressure spring of which are fixed on the displacement sensor body, wherein the third transducer is fixed in the cavity of the second movable tip, which has coaxial with the main movable tip holes, in one of which there is a sliding fit, selecting the second working section of the string.

EFFECT: technical result is possibility of simultaneous monitoring of both current values of movements, and their maximum values for the entire monitoring period from the moment of installation of movement sensor on object even in case, when secondary equipment is switched off or damaged, and evaluation of safe and reliable operation of building structures, in accordance with measured maximum values of parameters of stress-strain state of structures (displacements).

1 cl, 6 dwg