Electronic metering temperature and pressure compensation method for gas meter
A technology of electronic metering and pressure compensation, applied in the field of valuation and accounting, can solve the problems of inaccurate measurement of gas volume, and achieve the effect of reducing the influence of abnormal temperature and reducing the loss.
Active Publication Date: 2018-05-25
GOLDCARD HIGH TECH
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Problems solved by technology
[0003] In order to solve the technical problem in the prior art that the gas meter is used in environments with different temperatures and pressures and the gas volume is not accurate enough, the invention provides an electronic temperature and pressure compensation method for the gas meter to ensure accurate gas metering
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Embodiment 1
[0012] An electronic metering temperature and pressure compensation method for a gas meter, comprising: a controller of the gas meter, a counting register connected with the controller, a temperature sensor and a pressure sensor. The counting register stores the temperature and pulse number comparison table suitable for the temperature sensor. The comparison table of the temperature sensor temperature and the number of pulses in this embodiment is temperature: -40°C to 150°C, and the corresponding number of pulses is 181 to 3220. The temperature range is divided into nineteen calculation segments in units of 10°C. The number of pulses corresponding to the temperature value at the beginning and end of each calculation segment is the threshold pulse number. When the temperature collection time is up, the controller controls the temperature sensor to start temperature collection. The controller regularly reads the counting register to store data. After the temperature sensor i...
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The invention provides an electronic metering temperature and pressure compensation method for a gas meter, and relates to the technical field of pricing accounting. A counter register stores a temperature and pulse number comparison table, which is segmented in units of 10 DEG C. The number of pulses corresponding to each end-to-end temperature value is a threshold pulse number; the number of collection pulses returned by a temperature sensor and the threshold pulse number of each calculation segment are compared, a calculated temperature score is obtained, and the calculated temperature score and the temperature value corresponding to the number of small threshold pulses are added to obtain a temperature value; and by comparison with the standard temperature, pressure, and gas volume, the gas usage volume under operating conditions is obtained. According to the method, the technical problem that gas meters are used in different environments of temperature and pressure in the prior art, and the metered gas volume is not accurate enough is solved. The electronic metering temperature and pressure compensation method for the gas meter has the advantages that the gas quantity of the standard conditions is calculated by using the gas quantity of the operating conditions through the relationship between the temperature and the pressure, thereby more accurately reflecting the volumeof the actually used gas, and reducing the loss of gas sales by gas companies.
Description
technical field [0001] The invention relates to the technical field of pricing and accounting, in particular to a calculation method for temperature and pressure compensation of electronic metering of gas meters. Background technique [0002] my country has a vast territory and a large latitude span, and the temperature and pressure vary greatly between different regions. Gas with the same quality has different temperature, pressure and volume. There is a large difference in gas metering. Ordinary gas meters are volumetric flow meters, and the gas volume is basically independent of temperature and pressure changes. In this way, the measured gas volume is not the actual gas volume used under non-standard conditions, and the measurement accuracy for different temperatures is not high. Chinese patent application publication number CN106225862A, the application publication date is December 14, 2016, and the invention patent application titled "gas flow simple compensation met...
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IPC IPC(8): G01F15/04
CPCG01F15/04
Inventor 王郑凯张礼丁渊明
Owner GOLDCARD HIGH TECH