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METHOD OF MONITORING ACCESS COVERS OF UNDERGROUND INFRASTRUCTURE PARTICULARLY OF CAST IRON OR CAST IRON-CONCRETE COVERS AND A COVER MADE ACCORDING TO SAID METHOD
METHOD OF MONITORING ACCESS COVERS OF UNDERGROUND INFRASTRUCTURE PARTICULARLY OF CAST IRON OR CAST IRON-CONCRETE COVERS AND A COVER MADE ACCORDING TO SAID METHOD
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机译:尤其是铸铁或铸铁混凝土地下地下基础设施的覆盖面监测方法和根据所述方法制成的覆盖面
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摘要
An access cover to underground city infrastructure, particularly a cast iron or a cast iron-concrete cover provided with a cover detection sensor connected with a radio frequency signal transmitting antenna through a transmitter, characterised in that an antenna module (1) provided with a housing made of a material neutral to electromagnetic fields, preferably made of plastic, is installed in the through channel (4) with variable cross-section, and removably fixed at the bottom to a sensor module (2) located underneath the bottom of the cover (3), provided with a battery powered, low current electronic system containing a radio transmitter and an acceleration sensor or a gyroscope and an appropriate controller which detects changes to the position of cover (3) in space and in time, whereby the surface area of the sensor module (2) is greater than the surface area of the through channel (4). The object of the invention also includes a method of cover monitoring.
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