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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

Inactive Publication Date: 2010-11-24
NINGBO MINGTAI FLOW EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention mainly solves the problems of low precision and long time used in the existing pulse measurement method, and provides a high-precision and fast pulse measurement method

Method used

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  • High-precision and fast pulse metering device and method thereof
  • High-precision and fast pulse metering device and method thereof
  • High-precision and fast pulse metering device and method thereof

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Embodiment

[0025] In this embodiment, a high-precision and fast pulse metering device, such as figure 1 As shown, it includes a signal control unit 1 that generates start and end signals. The output of the signal control unit is provided with two lines, which are respectively connected to the timing and counting unit one 4 and the timing and counting unit two 5. The timing and counting unit one and A standard meter 2 is connected to record the time and the pulse number of the standard meter within this time, and the standard meter adopts an electromagnetic flowmeter. The timing and counting unit 2 is connected with the checked meter 3, which is a meter whose pulse coefficient or error needs to be detected. The output ends of the timing and counting unit 1 and the timing and counting unit 2 are respectively connected to a micro-processing unit 6 .

[0026] The pulse metering method using the above-mentioned high-precision fast pulse metering device, such as figure 2 as shown, figure ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/58
Inventor 张泰丰张祖明戴继烈宋宏良徐德芬
Owner NINGBO MINGTAI FLOW EQUIP CO LTD
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