A Smart Manhole Cover Lock System Based on NB-IoT Technology

Abstract

The invention relates to the technical field of intelligent manhole cover lock system, and discloses an intelligent manhole cover lock system based on narrowband Internet of Things technology, including a perception layer, a network layer and an application layer; the perception layer obtains manhole cover tilt and unlocking data through a network module upload. The intelligent manhole cover lock system based on narrowband Internet of Things technology can replace the traditional mechanical lock through the mechanical structure of the design, and the unlocking authority can be set, that is, only the special unlocking device is authorized to open the lock, and the unlocking information is recorded and realized. Manhole cover status monitoring and other functions can also realize the tilt monitoring of the manhole cover lock. After more than half a year of field testing, each smart manhole cover lock terminal can timely feedback alarm information, and can realize manhole cover tilt, low power and equipment disconnection alarms , and the timely upload of unlock and lock information can effectively help managers monitor and manage manhole covers.

Description

technical field [0001] The invention belongs to the technical field of intelligent manhole cover lock systems, and in particular relates to an intelligent manhole cover lock system based on narrowband Internet of Things technology. Background technique [0002] With the rapid development of the national economy, my country's urban modernization process is also advancing rapidly, thus promoting the construction of urban infrastructure, such as underground drainage and sewage pipes, underground cables and wires, the placement of underground natural gas pipelines, etc., in order to To facilitate later maintenance and management, the staff set up many inspection wells. The setting of a large number of inspection wells eventually led to a large number of manhole covers in each city. At present, the number of inspection wells in each city has reached hundreds of thousands or even millions. , The emergence of so many inspection wells means that we cannot monitor and manage each inspe...

AI Technical Summary

Problems solved by technology

However, manual inspection cannot monitor the condition of manhole covers in real time, nor can it find all problematic manhole covers in time. Sometimes it takes a long time to find problems with manhole covers, and often the hazards occur during this time period, and the implementation of special inspections will cause a lot of manpower, Waste of material and financial resources

[0004] At present, there are several types of manhole cover anti-theft locks: one is the iron chain connection method, the other is the hinge connection method, the third is the anti-rotation method of the stopper, the fourth is the bolt plugging method, the fifth is the lock key method, and the sixth is the fork joint. Linkage method; Among them, the first and second methods cannot integrate the well cover and the well circle lock, and it is easy to open, and the iron chain and hinge can be broken with a steel drill; the third method only needs to be rotated in the opposite direction to open and Take away the manhole cover; the fourth kind uses bolts and nuts to block the iron hook hole, but only need to insert the two ends of a bow-shaped iron wire into the two grooves under the bolt head to open and take away the manhole cover; Although the fifth and sixth types can lock the manhole cover and the well ring as one, they have high requirements for fitting space and fitting accuracy, and new manhole covers need to be cast to match them, and the existing manhole covers cannot be rebuilt and used. The problem of "anti-rust and dead" can't be opened by oneself after about half a year of installation, and can't go down to work

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