Manhole covers are prevalent in urban streets and alleys. necessitating the imperative attention to their daily maintenance and inspection. In order to meet the requirements of intelligent maintenance of manhole covers, this paper designs and implements an urban manhole cover monitoring system based on NB-IOT, which mainly uses single-chip microcomputer processing technology, sensor acquisition technology and wireless communication technology, and combines peripheral functional modules for design. The core control device of the system is STM32 single-chip microcomputer, which mainly collects water level height, combustible gas concentration and manhole cover pressure data in the well through the water level detection module, combustible gas concentration detection module and pressure detection module respectively, The GPS module collects the location data of the manhole cover, Additionally, location data of each manhole cover is collected by a GPS positioning module. The NB-IoT wireless communication module facilitates remote transmission of data while local data is periodically uploaded to the remote terminal, and the relevant data can be viewed on the mobile phone, which brings convenience to the manhole cover maintenance work and reduces the risk of accidents.
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Li et al. (2024) studied this question.
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