Smart card water meter

Abstract

The invention relates to a smart card water meter, a functional water meter for metering water and a functional circuit for charge management. A valve capable of automatically closing under power-off state is arranged in a mechanical water meter; a code type smart card circuit is overlapped on the mechanical water meter; in a water supply process, the charging state of a mechanical switch of each water supply unit generated by the mechanical detection metering of the water meter is instantly and immediately powered on, and then a new round of water supply is performed after the charging is confirmed through the smart card interactive communication and data exchange; when the condition of the new round of water supply is not met, the charged water supply volume is supplied till completing, and then the power is not supplied, namely, the valve in the water meter is automatically closed; the management, control and charging all have the uniform metering reading numbers which conform to the purpose of legislation for the metering law; the ladder-like water price can be conveniently implemented; the closed loop payment exchange for the electronic currency and the entity currency can be realized; the mechanical / electronic double-metering, dual control and dual display of the current smart card water meter caused by a traditional non-electricity electric measurement technique and the current situation of large-scale serious violation against national metering law of the whole industry are thoroughly eliminated.

Description

technical field [0001] The present invention relates to a flow measurement device; more specifically, it relates to a smart card for charging management, the circuit in the device is only charged instantaneously during each round of water supply, and performs real-time protocol encrypted communication and charging management. Installed valves; smart card water meters that can automatically shut off the valves in the device without electricity when the water supply conditions are not met. Background technique [0002] At the present stage, the public smart card water meter is still in the primary stage of research and development trial and use though it is being popularized and applied on a large scale. First, smart card technology, as an information technology, is improving its security and practical application scope by leaps and bounds; second, the implementation of information management for decentralized physical terminal water supply points such as water supply networks...

AI Technical Summary

Problems solved by technology

Therefore, there are major structural defects: there are two kinds of measurement data and two kinds of measurement results of mechanical measurement and electronic measurement at the same time! Such measuring instruments are contrary to the legislative purpose of "unified measurement standards" of the Metrology Law, and are illegal measuring instruments! That is to say, the daily water supply, water use, and payment management are all electronic data, and the measurement, control, and display results are mechanical data, while electronic data is just an electronic pulse modification in the mechanical detection process; one water data can be displayed in two ways, possibly There are two different metering readings: the fee payment is based on the electronic pulse alteration of the mechanical metering reading, and the control of water supply is also an electronic pulse alteration; and if the electronic data is inconsistent with the mechanical reading in actual management, the water supply department It is stipulated that when there is inconsistency, the mechanical display data shall prevail, and the electronic data shall only be used as reference data! This kind of industrial and large-scale violation of the fundamental legislative purpose of "unified measurement standards" in the National Metrology Law cannot last for a long time and last forever! 2. The existing smart card water meter must be powered continuously for 24 hours. Even if it is only a very small power supply in the dormant state of the circuit, the electronic metering pulse must be powered. The management work will fail and fail! However, at present, even the highest quality batteries in the world have a certain failure rate of sudden death during their normal service life; If the current cannot be supplied, it will inevitably lead to the loss of control of the smart water meter! At present, large-capacity farad capacitors are installed on many smart water meter circuits. This is the de facto dual power supply, which reduces the occurrence of out-of-control situations, but does not fundamentally solve the problem. Instead, new water supply failures appear. , Electronic water meters often cause water supply interruptions due to power supply problems, and replacing batteries and dismantling water meters is labor-intensive and time-consuming for users and increases management costs. Battery replacement has become a highly professional daily work for electronic water meters, affecting water supply. Increase the management cost and workload of the water supply company

3. Since many water meters are closed at the user for a long time, the external credit seal of the water meter is easily damaged, especially the electronic water meter has a circuit inside. The external credit seal of the water meter is a big problem, and there are management blind spots

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