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Wireless remote transmission electromagnetic flowmeter power supply system

A technology of electromagnetic flowmeter and power supply system, which is applied in the application of electromagnetic flowmeter to detect fluid flow, volume/mass flow generated by electromagnetic effect, and measure current/voltage, etc. Continuous detection and other problems to achieve the effect of reducing load, increasing output power, and reducing reactive power

Active Publication Date: 2020-12-15
CHANGJIANG WUHAN WATERWAY ENG CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For dredger electromagnetic flowmeters using AC excitation, the excitation power consumption is large and the general method cannot achieve continuous detection. It is relatively difficult to realize battery power supply. At present, there is no solution to the problem of power supply for dredger electromagnetic flowmeters using AC excitation. Technical solutions

Method used

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  • Wireless remote transmission electromagnetic flowmeter power supply system
  • Wireless remote transmission electromagnetic flowmeter power supply system
  • Wireless remote transmission electromagnetic flowmeter power supply system

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0054] Such as figure 1 As shown, a wireless remote electromagnetic flowmeter power supply system of the present invention includes a charging power supply, a cascaded storage battery pack, a first DC / DC power supply, a second DC / DC power supply, an excitation coil and a main controller, a wireless transmission module, impedance matching circuit, power frequency power amplifier circuit and storage battery power management module.

[0055] As for t...

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Abstract

The invention provides a wireless remote transmission electromagnetic flowmeter power supply system. The system is provided with an impedance matching circuit, a bidirectional silicon controlled rectifier switching capacitor is used, and a series capacitor is used for impedance matching to improve the power factor of a load sensor, so that the load of a power supply is reduced, reactive power generated by an excitation coil is reduced, and the output power of the excitation coil is improved. A power frequency power amplification circuit is arranged to convert the obtained direct current into power frequency alternating current, and it is guaranteed that the excitation current in the excitation coil is larger than 1 A current. The apparent power of an original alternating-current excitationelectromagnetic flowmeter is reduced from 500 VA to 13 VA through the impedance matching circuit and the power frequency power amplification circuit, and the use power consumption is greatly reduced,so that the alternating-current excitation system can realize battery power supply.

Description

technical field [0001] The invention relates to the technical field of flowmeter power supply during dredging medium transportation, in particular to a wireless remote transmission electromagnetic flowmeter power supply system. Background technique [0002] In recent years, domestic and foreign companies have successfully developed battery-powered electromagnetic flowmeters. However, without exception, the excitation methods are all square-wave excitation methods, and the method of sampling flow velocity at intervals is used to reduce power consumption. For the dredger electromagnetic flowmeter using AC excitation, the excitation power consumption is large and the general method cannot achieve continuous detection, and it is relatively difficult to achieve battery power supply. At present, there is no solution to the problem of power supply for the dredger electromagnetic flowmeter using AC excitation. Technical solutions. Therefore, in order to solve the above problems, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/60G01F1/58G01F15/00H03K19/0175H03K19/00H03K3/80H03F3/68H03F1/38G01R19/25G01R31/396G01R31/388G01R31/385H02J50/12H02J7/32
CPCG01F1/60G01F1/586G01F15/00H03K19/017545H03K19/01759H03K19/0016H03K3/80H03F3/68H03F1/38G01R19/2509G01R31/396G01R31/388G01R31/386H02J50/12H02J7/32
Inventor 王炜余海胜胡滨张雨张立杜君梅周运其周游张红漫刘丹亚
Owner CHANGJIANG WUHAN WATERWAY ENG CO
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