In recent days, the "NB-IoT Industry Alliance Summit Forum" held in Ningbo recently, Ningbo Yao Ling, technical director of Water Meter Co., Ltd. answered these questions at the conference.
Wisdom water supply business needs the support of Internet of Things technology
Wisdom Water is a new form of business that integrates modern information technology with water process control and internal management system deeply. Through excavation and utilization of water resources, improve management efficiency and efficiency, so as to scientifically manage urban water supply, water use, drainage, sewage treatment, reclaimed water utilization and so on.
China's water meter industry in the 13th Five-Year Development Plan proposed that we should continue to do a good job in water measurement services, accelerate the pace of product restructuring and transformation and upgrading of enterprises to better serve the water supply system requirements of the new system to promote the Internet + water supply business new System application work.
At the conference, Mr. Yao Ling said that the essence of Wisdom Water is "the integration of the two cultures". The integration of the two cultures means the profound integration of industrialization and informationization. The realization of smart water supply business can not be separated from the strong support of IoT technology. The Internet of Things is divided into three levels: the perception layer, the transport layer and the utilization layer. In the perception layer, the smart water supply service needs a sensor gateway, a sensor ad hoc network, Network sensor group, etc., in the network layer, the collected data transmission, the need for wireless cellular networks, steel / fiber optic networks, cloud computing platforms. In the application layer, the data used to the specific use, for example, automatic meter reading, automatic scheduling, water quality monitoring.
The smart water supply business needs to focus on three technologies: smart terminal technologies (meters, sensors, actuators, etc.), data transmission technologies (wireless network access to data) and solution technologies (data mining, mathematical modeling, control strategies, Database, etc.).
Network access technology is the key point of IoT applications
Mr. Yao Ling said that the smart water supply business needs the strong support of the Internet of Things technology and how the data collected by the sensor gateway is transmitted to the information management center is the key point of the Internet of Things application. He also pointed out that there is an urgent need to solve the problems of low power consumption and low cost of intelligent water meters and terminals, data security and reliability, and requires no ad-hoc network, data bidirectional transmission, and access technologies of network access parties.
The current smart meter data transmission and network access technology status quo is mainly the following four technologies:
1, bus network (M-BUS, RS-485) + GPRS access network
2, wireless ad hoc network (local area, wide area network) + GPRS access network
3, terminal meter + GPRS access to the Internet
4, wireless ad hoc network + city fiber or copper access network
The above four technologies are required in the process of networking cabling, reliability is not strong, the workload is large; the need for terminal enterprise networking; power consumption, cost and other issues.
Mr. Yao Ling said that the basic requirements of intelligent water meters for wireless communications are low power consumption of communications and long-term work; low price of modules and tariffs and low price of water meter products, which can be widely promoted; two-way communication, reliable work, data security, Poor job.
With the advent of smart water meters, more and more smart water meters will be used. The trend is battery-powered actuators that increase in sensors; the number of communications will increase dramatically; and smart terminals will gradually have self-test, since School, alarm and other functions; terminal manufacturers do not have their own network.
NB-IOT brings hope to the smart water supply business
NB-IOT own technical advantages to the smart meter brings hope:
1, low cost network access
2, low data transceiver power consumption
3, a wide range of signal coverage
4, do not need their own network, without routine maintenance and technical upgrades
5, when enough sensor nodes, the communication charges are relatively low
Mr. Yao Ling said at the conference that in order to promote the widespread application of NB-IOT technology in the smart water supply business, Ningbo Metrology Co., Ltd. and the water meter industry continue to contribute their own strength to convene meetings of water meter industry conferences and technical working groups and invited Huawei company experts to do NB -IOT special report and technical Q & A to promote NB-IOT technology; Ningbo Metrology Co., Ltd. and Huawei Technologies have established strategic cooperative relations to jointly promote smart meter wireless network access technology; and actively promote the production of smart meters by Huawei companies, telecommunications operators, water supply enterprises and water meters Enterprises to participate in the NB-IOT application pilot work; in the water meter industry to build "NB-IOT wireless communication technology promotion team" to develop the relevant standards and technical solutions, do a good job before the large-scale pilot case work to promote NB The Application of IOT Technology in Smart Water Supply Business.
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