High-precision and fast pulse metering device and method thereof

A technology of fast pulse and metering method, which is applied in the direction of detecting fluid flow and volume/mass flow generated by electromagnetic effect with electromagnetic flowmeter, which can solve the problems of low precision and long time, and achieve the goal of improving work efficiency and saving energy Effect
CN101893464AInactive Publication Date: 2010-11-24NINGBO MINGTAI FLOW EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO MINGTAI FLOW EQUIP CO LTD
Publication Date
2010-11-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-precision and fast pulse metering device and a high-precision and fast pulse metering method. The method solves the problems of low precision and long time in the conventional pulse metering method. The pulse metering device comprises a standard meter and a measured meter, wherein the standard meter is connected with a first pulse timing and counting unit, and the measured meter is connected with a second pulse timing and counting unit; and input ends of the first pulse timing and counting unit and the second pulse timing and counting unit are connected to a signal control unit, and output ends of the first pulse timing and counting unit and the second pulse timing and counting unit are connected to a micro processing unit. The pulse of the standard meter is compared with the pulse of the measured meter, the number of the pulses and the correct time of the standard meter and the measured meter are measured in an interval respectively, the number of the pulses of the measured meter is corrected, and a measured flow meter which outputs a pulse signal is metered quickly and accurately, so that the working efficiency is improved and the energy is also saved.
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Description

technical field

[0001] The invention relates to a pulse metering device, in particular to a pulse metering device with high precision and fast measuring speed and a measuring method thereof. Background technique

[0002] In flow measurement, many flowmeters to be inspected are output with pulse position measurement signals, which brings great convenience to the automatic data collection of flow standard equipment. The photoelectric signal collects the pulse number of the meter under test for a period of time, and measures the standard flow rate (such as standard measuring device, electronic scale, standard meter, nozzle, volumetric tube, etc.) at the same time. pulse factor or error. Among them, type A calculation is often used to calibrate the pulse coefficient of flowmeters such as turbines and vortex streets, while type B calculation is often used to verify the error of flow equipment with known pulse coefficient.

[0003] To measure two pulse signals in the same time ...

Claims

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