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Mechanical water meter era
The mechanical water meter era has a history of production and use of hundreds of years. Even today, smart water meters have been widely promoted, the current usage still accounts for more than 85%.
However, many years of experience have also led people to begin to discover mechanical water meter defects, such as its high water quality requirements, shaft wear and long service life; in terms of measurement, characteristic correction is difficult, accuracy is not high and it is difficult to maintain for a long time Small flow characteristics are sensitive to temperature and cannot be corrected; pressure loss is large and power consumption of water supply is high; electrical signals need to be output through an “electromechanical conversion†device. So people began to explore the improvement of smart water meter technology, and there was a later era of smart water meters.
Intelligent water meter 1.0 era
In the standard CMA/WM004-2014 “Smart Water Meter Type and Function Specificationâ€, the smart water meter is defined as follows: The smart water meter is based on flow sensing and signal processing components, built-in embedded microcomputer systems and algorithms, and various types of input. The output interface and/or electronically controlled actuators are platforms, which have or partially have an electronic water meter or electronic device with functions such as flow parameter detection, data processing, data communication, data display or storage, controlled opening and closing of an electric control valve, and the like. Water meter. It can realize functions such as flow sensing, signal acquisition, signal conversion, data processing, data communication, data display, controlled opening and closing of electric control valves, and network access.
The main types of water meter products in this period are electronic remote water meters, pre-paid water meters, quantitative water meters, network valve water meters, automatic meter reading systems, pre-paid water sales systems (concentrators, card readers, etc.).
Because of the improvement in the performance of the mechanical water meter, the smart water meter technology has been adjusted in many ways, but the effect is not satisfactory. For example, the metering performance has not improved significantly; the flow sensor still uses traditional mechanical water meters; the problems of limited service life, sensitivity to water quality, and vulnerable moving parts have not been well resolved, but they can be regarded as the beginning of the evolution of mechanical water meters to smart water meters. , Soon, under the influence of user demand, the arrival of the smart water meter 2.0 era, and these unresolved issues have also been a very good improvement.
Embrace the "Internet + Smart Meter 2.0 Era"
At this stage, the water flow sensor began to use electronic flowmeter technology (ultrasonic water meter, electromagnetic water meter, jet water meter, etc.) to help improve the quality of metering performance, accuracy, measurement range, repeatability, service life, long-term reliability And other technical indicators have significantly improved.
Online status monitoring, online cycle verification, on-line self-checking, self-calibration, self-compensation, early warning and alarm functions are all available in the networked environment. It gradually integrates into the pipe network monitoring and control system and becomes an important part of it. It undertakes sensing and execution. Large-scale tasks (gradually advance to the pipeline network comprehensive parameter measurement and control system).
After entering the 2.0 era, smart water meters have greatly improved on all aspects of technology. This time has already begun to connect with the Internet to explore higher-level mining. Compared with before, the metering performance of smart meter terminals has been improved; wireless network access and data security have been solved; and the monitoring and control system of the pipeline network has been integrated to improve the functions of smart meter terminals. People also began to analyze and acquire data for deep mining and application. At the same time, they provided value-added services for smart water supply and smart water services through the Internet (mobile Internet) network platform (mobile payments, resident water statistics and inquiries, data analysis, news notifications, valves Control, water-saving management and other functions, continuous innovation and development, deep integration of Internet and smart meter technology and applications.
Intelligent water meter technical standards need to be improved
Although smart water meters have progressed smoothly in technology, many practical effects have been achieved. However, there are some shortcomings in terms of standards. There is no complete standard system support, which brings a lot of inconvenience and impact to product design, manufacturing, testing, inspection, use, bidding, and management, leading to the incompatibility of similar products in the industry. Unity, incompatibility, certain new products, new technologies, and new achievements are not standard, and test methods and devices are not matched.
At present, China's smart water meter product technology, management level, development trend, etc. obviously lags behind the smart meter industry, and also faces the risk of gradually widening the gap between foreign smart meter technology; China must establish its own intelligent water meter technology standard system to guide the industry as soon as possible. With orderly development and technological advancement, we will quickly keep pace with the development of advanced intelligent instrumentation industry at home and abroad.
Embracing the Internet + Smart Meters to Promote Water Meter Industry Transformation and Upgrade
[China Instrument Network Enterprise Wind vane] Recently, the 2015 Intelligent Water Vapor Measurement and Pipe Network Implementation Forum successfully closed. Ms. Wang Xinxin of Ningbo Water Meter Co., Ltd. made a report on “Holding the Internet Intelligent Water Meter 2.0†to promote the transformation and upgrading of the water meter industry†at the forum. The development of the water meter industry.