Prepayment meter based on block chain

Abstract

The invention discloses a prepayment meter based on a block chain, which belongs to the field of meters. According to the invention, a filter trigger is arranged in a water inlet pipe to provide two filter anti-blocking defensive lines for a water meter body, water in the water inlet pipe sequentially passes through a self-closing filter element and a standby filter element, and water impurities are firstly adsorbed and accumulated on the surface of the self-closing filter element; along with continuous increase of impurities, the water flow pressure borne by the self-closing filter element isgradually increased to a certain value, a ring head is disengaged from a fixing ring, the self-closing filter element and the standby filter element jointly move in the water flow direction under theaction of water flow until the self-closing filter element and the standby filter element stop under limitation of a non-elastic connecting rope, and at the moment, the opening end of the self-closing filter element is automatically closed; filtered impurities are wrapped and are not prone to being mixed into water flow again, the standby filter element plays a role in filtering water; and meanwhile, a tension sensor bears the tension effect of the non-elastic connecting rope, the blockage condition is transmitted to the water meter body, and workers are reminded to clean the water meter bodyin time.

Description

technical field [0001] The present invention relates to the field of meters, and more specifically, to a block chain-based prepaid meter. Background technique [0002] Blockchain is a term in the field of information technology. In essence, it is a shared database, and the data or information stored in it has the characteristics of "unforgeable", "retaining traces throughout the process", "traceable", "open and transparent", and "collective maintenance". [0003] Public resources used by households or other occasions include water, electricity, and gas, and their billing depends on household meters such as water meters, electricity meters, and gas meters set by end users. In the existing technology, meter prepayment uses contact IC card and radio frequency card, and the user needs to go to the relevant business hall to pay the fee and transfer the amount to the card, and then the user goes to the meter and touches or approaches the card to the prepaid meter. Finish recharg...

AI Technical Summary

Problems solved by technology

[0004] Prepaid water meters are one of the prepaid meters. Prepaid water meters are suitable for the management system under the principle of "pay first, then use water". Water meters have completely changed the way of meter reading and water consumption settlement, but water quality problems will have a certain impact on the use of prepaid water meters. Even though the existing technology has considered installing filters in the water meter pipes, it cannot be found that the water meter pipes are blocked in time problem, resulting in serious inaccuracy of prepaid water meter measurement

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