MATEC Web Conf.
Volume 228, 20182018 3rd International Conference on Circuits and Systems (CAS 2018)
|Number of page(s)||4|
|Section||Circuits, Control and Mechatronic Engineering|
|Published online||14 November 2018|
Design, Detection and Management of Mechanical Security Code Manhole Cover
Chongqing Institute of Metrology and Quality Inspection, Chongqing, 401123
2 Chongqing Municipal Facilities Administration, Chongqing, 400015
3 Chongqing Zhongtian Electromechanical Technology Co., Ltd, Chongqing, 400039
In this paper, the researches and the application of manhole over as well as the existing problems have been described. The mechanical security code manhole cover with the built-in locking mechanism has been designed. The locking mechanism can withstand the muddy water immersion test, the password design test, the low temperature alternating cycle test, the failure load test and the vibration test. The manhole cover is equipped with an electric key and a mechanical key. The electric key automatically opens the code lock by receiving the password. The mechanical key demands to manually adjust the dial to open the code lock. The key and the password are respectively managed by different people.
Key words: Password manhole cover / Locking mechanism / Electric key / Mechanical key
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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