chrispeng [ad_1]
The current manhole cover management is mostly manual inspection, and the maintenance, anti-theft, investigation and remediation work is not efficient. How to ensure that the manhole cover facilities can be maintained in a timely manner and early detection and investigation of various hidden dangers are an important subject of urban street management.
The smart street manhole cover management system relies on advancedRFIDEquipment, wireless sensor network, communication network and computer technology, establish an intelligent network all over the street manhole cover management, realize that the manhole cover can turn on the alarm in abnormal state, and ensure the safety of related public facilities to the greatest extent.
As the various functions of the city are becoming more and more perfect, the manhole covers are also embedded in the streets of the city like screws on huge machines. These manhole covers belong to multiple industry sectors such as municipal administration, communications, gas, heating, electric power, and traffic management. The ownership is complicated and the management is difficult. Among them, electric power and communication cable manhole covers account for a considerable part.
The theft, missing and damage of the manhole cover has two main impacts: 1) It brings safety hazards to pedestrians and vehicles and becomes a road killer; 2) Theft of underground electrical cables through the entrance of the manhole cover affects power supply and communication.
The theft of manhole covers and the theft of underground cables have become a prominent problem that currently affects our country’s municipal construction, electricity, and communications security. The current solutions are air defense, physical defense, and technical defense.
Air defense
The main difficulty of civil air defense is that the supervision area is too wide to prevent it in place 24 hours a day, and the efficiency is low, and the cost is high.
Physical defense
Physical defense has limitations, the cost is too high, and the prevention is limited.
Technical defense
The problem of technical prevention is that the cost is too high, and its anti-theft cost far exceeds the actual cost of the manhole cover itself and the cost of loss and theft. It is even more difficult to realize the monitoring of the manhole cover and cable prevention in a large area.
At present, it can be said that there is no enterprise unit or scientific research institute in China’s security industry that can truly technically solve the problems of well anti-theft and large-scale supervision. Even if the management of manhole covers in digital urban management proposed by many places can only achieve the district digital household registration and video monitoring of manhole covers, it is impossible to monitor the manhole covers in all areas in a large area for 24 hours.
The emergence and application of RFID technology and WSN technology have brought a lot of manageability to the management of urban manhole covers. The smart street manhole cover management solution uses the characteristics of RFID technology and WSN technology to realize the retrospective supervision of the manhole cover and maintain the safety of roads and wells. Once the manhole cover is lost, it immediately sends an alarm message to the background data processing center, and the background sends the alarm information through SMS Send it to the maintenance personnel, and the maintenance personnel only need to scan the electronic label to immediately identify the property right unit and reinstall the manhole cover in the shortest time.
Install a slave sensor node with an integrated tilt sensor on the manhole cover. After the manhole cover is moved, the sensor node will send out an alarm message. The alarm information is sent to the background data management center through the wireless sensor network formed by the sensor node, relay node and data center. After the data management center receives the alarm information, it sends it to the mobile phone of the relevant manager by means of SMS. The relevant manager verifies the information and conducts on-site processing. After the problem is solved, the information is sent back to the back-end data management center through the WSN network, and the back-end management center resolves the alarm information If the problem is not resolved, the relevant management personnel will contact the property right unit of the manhole cover to reinstall the manhole cover in the shortest time.
An anti-metal tag is installed on the edge of the well, and the detailed information of the well cover and the well can be stored in the tag. The on-site staff can scan the label through the handheld machine to know the property unit and detailed information of the well and the well cover, which is convenient for timely replacement of the well cover; Non-contact inventory; send the alarm cancellation message to the background data processing center through the handheld.
The workflow of the smart street manhole cover management system is as follows:
device installation
First install related equipment, including sensor nodes, relay nodes, data centers, anti-metal tags, etc.
1) The sensing node is fixed at the center of the bottom of the manhole cover with screws;
2) The relay node adopts pole-mounted installation, which is generally installed on street lamp poles or objects along the way;
3) The data center adopts pole-mounted installation, which is installed on a street light pole or the top of a building, or in the back-end management center;
4) The anti-metal tag is installed by sticking, close to the edge of the well, 10-20cm away from the bottom of the well cover.
Manhole cover alarm
The manhole cover is moved, the tilt sensor is triggered and an alarm signal is sent, and the alarm signal is uploaded to the background data processing center through the WSN network.
Background processing
The background data processing center receives the alarm information, analyzes the code and location of the signal, and sends the specific information to the alarm center and the mobile phones of relevant personnel.
Site survey
The on-site staff scans the well label through the handheld machine to inquire about the detailed information of the well and the manhole cover, writes the modified information into the label after maintenance, and feeds the situation back to the background data processing center through the WSN network.
Disarm the alarm
The back-end data management center receives the data and processes it, and then sends out a clearing alarm message.
[ad_2]
