Target gas metering prepayment gas meter and target gas metering method thereof

Abstract

The invention provides a target gas metering prepaid gas meter and its target gas metering method. The prepaid gas meter includes a housing, a prepayment management circuit and an intake pipe, and the prepayment management circuit includes a microprocessor circuit and a target gas detection sensor. The module and the measurement signal sampling circuit, the microprocessor circuit is connected to the measurement signal sampling circuit, the target gas detection sensor module is connected to the microprocessor circuit, and the target gas detection sensor module is arranged in the gas circuit. The method is: the microprocessor circuit judges whether the target gas concentration threshold is reached according to the target gas concentration signal, if so, reads the metering signal, otherwise, stops reading and returns to continue judging; Perform conversion and display the measured value of the target gas volume. The gas meter has accurate measurement and is easy to transform; the method is simple and practical and easy to realize.

Description

Technical field [0001] The invention involves a gas meter. Specifically, it involves a target gas measurement prepaid gas meter and its target gas metering method. Background technique [0002] As a gas metering equipment, the gas meter is widely used in production and life; the existing gas meter can be divided into mechanical membrane gas meters and electronic membrane gas meters.Measurement does not detect and judge the target gas flowing through the gas meter. Therefore, during the use process, there will be some disadvantages: for example, in order to accelerate the construction and popularization of biogas projects, China has adopted the policy of using biogas to obtain subsidies.However, in the process of subsidies, individual users have adopted the phenomenon of using a blossom blower to impersonate biogas and deceive financial subsidies. This phenomenon not only violates the original intention of national policies, but also harms the interests of biogas users. In additio...

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Problems solved by technology

[0002] As a kind of gas metering equipment, gas meters are widely used in production and life; existing gas meters can be divided into mechanical membrane gas meters and electronic membrane gas meters, which generally only measure the total volume of gas flowing through the gas meter. Metering does not detect and judge the target gas flowing through the gas meter. Therefore, there will be some disadvantages in the process of use: for example, in order to speed up the construction and popularization of biogas projects, my country has adopted the policy of using biogas to obtain subsidies. However, during the subsidy process, some users used blowers to pretend to be biogas to obtain financial subsidies. This phenomenon not only violated the original intention of the national policy, but also harmed the interests of biogas users; In order to seek improper benefits, there has been a phenomenon of using low-quality gas to shoddy and harm uninformed users

[0003] In view of the above situation, since the existing gas meter does not have the function of detecting the target gas flowing into the gas meter, it is impossible to discriminate the true and false target gas and scientifically measure the gas flowing into the gas meter

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