Well lid and well lid electronic lock state monitoring device and method

The invention provides a manhole cover and manhole cover electronic lock state monitoring device and method, and relates to the technical field of manhole cover state monitoring, and the manhole cover and manhole cover electronic lock state monitoring device comprises a manhole cover lock, an electr...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FU HUAIZHEN, JIANG ZHILI, YANG ZHENWEI, HAN WENLU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES THEREFOR EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HANDCUFFS HYDRAULIC ENGINEERING KEYS LOCKS SAFES SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES WINDOW OR DOOR FITTINGS
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