Intelligent power manhole cover opened in Nanjing
Xinhua News Agency, Nanjing, November 14 (Reporter Liu Yuxuan) "how have the manhole covers here been changed? The car used to stop thumping and looked stronger. I heard it was equipped with sensors. " Mr. Sun, who lives in the Drum Tower in Nanjing, pointed to the words on the manhole cover. "the intelligent manhole cover system, I don't know how to use the intelligent method."
Smoke sensing, anti-theft, anti-fall, independent positioning. Recently, 50 sets of intelligent power manhole covers have been opened in Nanjing. According to reports, the new manhole covers, developed by the Nanjing Power supply Company of the State Grid, are equipped with electric Internet of things technology, which is used to monitor the status of underground lines and feed back the operation information of the equipment in real time.
The data show that there are more than 80,000 power manhole covers in Nanjing, and the urban cable rate is more than 85 percent. "the function of the traditional cast iron manhole cover is single, and the problems such as subsidence, displacement and damage occur frequently. After the problem, it is difficult to locate and check, which is time-consuming and laborious." Deng Peng, who has been engaged in cable maintenance for many years, told reporters that the manhole cover is jokingly called the "city belly button" because it is delicate and prone to illness.
How to protect the "urban belly button" and let the underground space be mastered? Deng Peng and his fellow workers opened an intelligent manhole cover to let the reporter find out. From the outside, it is roughly the same as the traditional manhole cover, the mystery is installed in a black box below.
Deng Peng said: it is a multi-purpose sensor that integrates many functions, such as communication and transmission, positioning, gas, water level, temperature and humidity, displacement monitoring, and so on. It can monitor the state of the manhole cover itself and the situation in the lower passage in real time. The test data are collected and transmitted to the monitoring center.
At the Cable Operation and Inspection Monitoring Center of Nanjing Power supply Company, a map of Nanjing City District is displayed on the big screen, and there are dozens of flashing aperture on the map. Staff told reporters that there are more than 50 such aperture, representing the city has been installed in the intelligent manhole cover. The manhole cover works normally, the aperture shows blue, the abnormal operation shows red, and the alarm is automatic.
Liu Xiao, an operation and maintenance officer at the cable operation and inspection monitoring center, said that once the manhole cover tilts, displaces, or encounters illegal unlocking, theft, downhole flooding, equipment spontaneous combustion, and so on, the intelligent manhole cover will locate and alarm in time, and the staff will go to overhaul for the first time.
Experts said that the extension of intelligent power manhole cover technology to rain pollution, gas and other municipal pipe network projects, there is not much technical obstacle. Next, we should focus on exploring inter-departmental coordination, regulatory information sharing, overall management of urban underground resources, so that intelligent manhole cover, intelligent pipe network construction into a smart city "inner project."