Digital manhole cover

The utility model relates to a digital manhole cover, including lid, manhole, top board, holding down plate, set up monitoring devices between top board and lid, mainly that monitoring devices adoptshall electromagnetic induction sensor, hall electromagnetic induction sensor comprises box, case lid,...

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Bibliographic Details
Main Authors LIU MANHONG, WU KAITUO, ZHENG ZHIDA, SUN JING
Format Patent
LanguageChinese
English
Published 28.08.2018
Subjects
ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
PACKAGES
PACKAGING ELEMENTS
PACKING
PERFORMING OPERATIONS
STORING
TRANSPORTING
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Summary:The utility model relates to a digital manhole cover, including lid, manhole, top board, holding down plate, set up monitoring devices between top board and lid, mainly that monitoring devices adoptshall electromagnetic induction sensor, hall electromagnetic induction sensor comprises box, case lid, displacement transformation mechanism, permanent magnet and hall element, installation signal processing device in the box of hall element one side, the signal processing device comprises proportional amplifier, when the top board is opened, its rotation axis drives the runner, round pin axle androtatory with the connecting plate of round pin hub connection one end, the connecting plate other end moves slider rectilinear movement in body cavity wall spout through fixed axial tension, make thedistance between permanent magnet and the hall element change, change hall element output voltage, obtain the intelligent monitoring signal through signal processing device and microprocessor, the detectivity height has, good
Bibliography:Application Number: CN201721667841U