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Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor

An electromagnetic sensor and isolation circuit technology, applied in the direction of voltage/current isolation, etc., can solve problems such as low efficiency and large error in measurement isolation methods, and achieve the effects of precise isolation transmission, increased isolation transmission frequency, and high operating frequency

Active Publication Date: 2020-06-09
南京瑞控电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an isolation circuit based on an electromagnetic sensor to realize linear pulse power, so as to solve the problems of large error and low efficiency in the existing measurement isolation method

Method used

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  • Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor
  • Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor
  • Isolation circuit for realizing linear pulse electric quantity based on electromagnetic sensor

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The present invention provides such figure 1 The electromagnetic sensor shown in the figure realizes the isolation circuit of linear pulse power, including input side working voltage V1, first resistor R, input signal vi, D / A converter, electromagnetic sensor BL, isolated output side working voltage vcc and shaper ZX, One side of the electromagnetic sensor BL inputs two circuits, wherein the left end of the upper circuit is connected to the input side o...

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Abstract

The invention discloses an isolation circuit for realizing linear pulse electric quantity based on an electromagnetic sensor. The isolation circuit comprises a D / A converter, an electromagnetic sensorBL for isolating and converting an input pulse waveform into a differential signal, a shaper ZX, a first resistor R1 and a second resistor R2, wherein one end of the input side of the electromagneticsensor BL is connected with an input side working voltage V1 through the first resistor R1, the other end of the input side of the electromagnetic sensor BL is connected with the output of a D / A converter, and the input end of the D / A converter is connected with an input signal vi; one end of the output side of the electromagnetic sensor BL is connected with the input end of the shaper ZX, and the other end is connected with the 1 / 2Vcc position. A voltage stabilizing diode is connected between the 1 / 2Vcc position and the ground, and the second resistor R2 is connected between the 1 / 2Vcc position and the isolation output side working voltage vcc. The error of linear pulse electric quantity signal measurement isolation is reduced, accurate isolation transmission is realized and the efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of isolated transmission of microelectric DC signals, and in particular relates to an isolation circuit based on an electromagnetic sensor to realize linear pulse power. Background technique [0002] The current measurement isolation methods are electromagnetic transformer amplitude modulation carrier isolation and optocoupler isolation. The electromagnetic transformer amplitude modulation carrier isolation has been basically eliminated for many years. Now the optocoupler isolation is widely used. These two methods are in line with the linear accuracy requirements. High places are difficult to achieve. [0003] 1. Magnetic transformer AM carrier isolation [0004] A Magnetic transformer amplitude modulation carrier has low isolation and transmission efficiency in actual use, and the circuit is relatively complex. The magnetic field is easily affected by temperature, and the output value of the measured line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/20
CPCG01R15/20
Inventor 鲁声豪鲁家银
Owner 南京瑞控电气有限公司
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