With the further acceleration of urbanization, the construction of municipal public facilities has developed rapidly. There are a large number of municipal equipment and assets to be managed in municipal, power, communication and other departments. Through the use of RFID technology and sensor technology and other Internet of things technology, the digital management of well covers is implemented to achieve effective supervision of social resources and ensure the personal safety of the people. With the further acceleration of urbanization, the construction of municipal public facilities has developed rapidly. There are a large number of municipal equipment and assets to be managed in municipal, power, communication and other departments. Among them, the well cover has become a non negligible item.

Because of the lack of effective real-time monitoring and management means, a large number of manhole covers provide opportunities for lawbreakers. Illegal activities such as moving and stealing manhole covers occur from time to time, which not only affect the normal operation of relevant equipment, but also cause huge direct or indirect economic losses. Moreover, the lost manhole covers will also cause great harm to vehicles and pedestrians on the road and social stability . negative impact on safety.

The Ministry of housing and urban rural development put forward the notice on Further Strengthening the safety management of urban inspection well covers a few years ago, which requires the departments of urban water supply, drainage, gas, heat, real estate (property), electricity, telecommunications, radio and television to implement the digital management of well covers, realize the effective supervision of social resources, and ensure the personal safety of the people. Although the management requirements of municipal well covers are very clear, a large number of outdoor municipal well covers are still basically managed by manual patrol, unable to obtain the equipment information in real time and effectively, and unable to achieve real-time monitoring and rapid and efficient management in the face of abnormal conditions.

'Based on the above-mentioned problems and challenges in the management of municipal well covers, the intelligent management system of well covers is proposed. Unified IOT adopts the technology related to the Internet of things based on RFID, sensor technology, geographic information technology, computer network technology and other wireless communication technologies, so as to realize the wisdom, networking and spatial visualization of urban well covers and event management New municipal well cover management mode, improve municipal well cover management process, establish a set of scientific and perfect supervision and evaluation system, realize the sharing of existing relevant resources, and improve the efficiency and level of urban comprehensive management.

Working principle of unified IOT intelligent well cover system

'the intelligent management system of well cover is based on the needs of relevant departments of municipal management for the management of municipal well cover, to achieve the goal of positioning information management of well cover area. The whole system consists of three parts: perception layer, network layer and application layer. After the establishment of the sensing layer network platform, the electronic labels embedded with various sensors are installed on the municipal well cover. When the attitude, position or state of the electronic labels change abnormally, the electronic labels on them are immediately sensed by the sensors and send alarm information to the nearby intelligent gateway of basic service network, i.e. the base station.

'The alarm information is uploaded to the monitoring center through the intelligent gateway. Through the system management platform, managers can see the state change and alarm information of the management object in front of the computer screen at the first time, which greatly shortens the response time for taking action measures, thus providing a low-cost, real-time and efficient monitoring and management means for these municipal well covers. The base station receives the well cover signal through RFID technology, and transmits the information to the information center of street lamp management center through Ethernet or CDMA communication mode. It combines the front-end sensing device code, number and location information with GIS map, quickly judges the position and status of the monitored object and gives an alarm. The alarm will inform the municipal department management center and relevant personnel of the handheld terminal, and Timely mobilize the relevant staff to solve the problems and eliminate the potential safety hazards.

'the system can also realize the information input / export function, alarm display function, alarm linkage function, card card linkage function and information query and statistics function. Through the built-in module, the quantity statistics management of well covers in the area can be carried out to facilitate the inventory and clearing work. The well cover intelligent management system fixes the active RFID tag on the pole of the street lamp pole, transmits the well cover information on the RFID tag to the surrounding RFID base station through the radio frequency identification transmission technology, after receiving the information, the RFID base station transmits it to the municipal management center platform through the Ethernet or CDMA network, and the administrator manages the relevant daily, alarm and other information in a timely manner.

Composition and application scenario of unified IOT intelligent well cover

The intelligent management system of well cover monitors the well cover by fixing the base station on the light pole and setting the alarm angle of the inclination detection module. When the well cover is illegally moved or opened, the base station uses RFID technology to receive the signal information and transmits the information to the general control / sub control center of the relevant management department through the Ethernet or CDMA network, and encodes, numbers and positions of the front-end sensing devices Combining information with GIS map, quickly judge the location and status and give an alarm. The alarm will inform the alarm center of the management department and relevant personnel to hold the terminal, timely and quickly mobilize the staff of the municipal department, and implement linkage scheduling. The well cover is equipped with an electronic tag integrated with tilt and vibration induction. When the well cover is in normal state, the electronic tag is in sleep state. When the well cover is abnormally opened, the electronic tag will immediately send an alarm signal. For the well cover installed with electronic label, in the process of theft, the system can realize real-time positioning and tracking, which is convenient for managers to retrieve the well cover and assist the police to catch the theft suspect.