ic card intelligent mass flow gas meter and its management system

Abstract

The invention discloses an IC card intelligent mass flow gas meter and its management system, belonging to a gas metering device. The gas meter includes a microcomputer controller, a microelectromechanical metering unit, a valve control circuit and a communication module. The electromechanical metering unit is sequentially connected to the microcomputer controller through the signal acquisition unit and the signal processing unit; the microcomputer controller is connected to the electromechanical valve through the valve control circuit; the microcomputer controller is also connected to the communication module; the present invention adopts mass flow metering The principle, no mechanical transmission parts, avoids the measurement problems caused by mechanical aging, and ensures the measurement accuracy; and achieves the temperature correction function by mass flow measurement, without external correction devices for temperature and pressure compensation, the entire meter is small in size, and the measurement accuracy is high. High, strong reliability.

Description

technical field [0001] The invention relates to a gas metering device, more specifically, the invention mainly relates to an IC card intelligent mass flow gas meter and its management system. Background technique [0002] With the rapid development of clean and efficient energy such as natural gas, more and more urban residents use natural gas, and gas measuring instruments are necessary equipment for the measurement and settlement of natural gas consumption. At present, domestic gas metering base meters are mainly mechanical gas meters, which adopt the principle of volumetric metering and measure the volume flow rate of gas through a flexible diaphragm metering chamber. The flexible diaphragm is easily affected by moisture and dust in natural gas. The mechanical gas meter based on the principle of mechanical propulsion will inevitably experience mechanical aging during long-term use, which will lead to poor measurement accuracy and poor reliability. High and limited lifesp...

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide an IC card intelligent mass flow gas meter and its management system in view of the above deficiencies, in order to solve the problem of large errors in the metering base meter of the volumetric metering principle in the prior art, and the addition of temperature and volume correction The device increases the production cost, and the basic meter of ultrasonic principle measurement is not suitable for technical problems such as mixed gas source

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