SYSTEM TO MONITOR CONDITION OF CRACKS AND JOINTS OF BUILDINGS AND STRUCTURES Russian patent published in 2012 - IPC E04G23/00 

FIELD: construction.

SUBSTANCE: system to monitor condition of cracks and joints of buildings and structures comprises a sensor - an indicator of a clock type, supports on the surface of a building structure at different crack edges. A receiving radio module and a registration device are introduced, and the sensor additionally comprises a slide wire and a movable current collector, an analog-to-digital converter, a microcontroller, a transmitting radio module, a chemical source of supplying voltage, an "alarm clock" module. The movable stem of the clock-type indicator is mechanically connected with the slide wire current collector, its output is connected to the analog-to-digital converter, which is connected to the microcontroller, which is connected to the transmitting radio module. The chemical source of supplying voltage is connected to the slide wire, to the analog-to-digital converter, to the microcontroller, to the transmitting radio module, to the "alarm clock" module. The output of the "alarm clock" module is connected to the microcontroller, the transmitting radio module is connected along a radio channel with the transmitting radio module, which is connected to a recording device. The system is equipped with additional sensors by number of monitored cracks and joints.

EFFECT: invention provides for the possibility of automation of measurements of crack and joint opening width, especially when they are arranged in hard-to-access areas, reduced material intensity.

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