Industrial three-phase isolation ampere meter

An ammeter and three-phase technology, which is applied in the field of industrial three-phase isolated ammeter, can solve the problems of strong interference and evil, and achieve the effect of reliable transmission without affecting the operation of equipment

Inactive Publication Date: 2015-06-03
HARBIN SANHE JIAMEI TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, because the working environment of the industrial site is relatively

Method used

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  • Industrial three-phase isolation ampere meter

Examples

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Example Embodiment

[0013] Examples:

[0014] See attached figure 1 As shown, the A-phase sampling resistor (1) is connected to the single-chip microcomputer (7) after amplifying the sampling signal through the A-phase differential amplifier (4), and the B-phase sampling resistor (2) is connected to the single-chip microcomputer after amplifying the sampling signal through the B-phase differential amplifier (6). (7) Connect, the C-phase sampling resistor (3) Amplifies the sampling signal through the C-phase sampling resistor (3) and connects with the single-chip microcomputer (7). After the collected data is converted through the single-chip (7) for analog-to-digital conversion, it passes through the LED digital display in real time (8) The current is displayed, and it is output to the interface circuit (10) through the photoelectric isolation module (9) at the same time for collection and use by other automatic control instruments.

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Abstract

The invention relates to an industrial three-phase isolation ampere meter. An A-phase sampling resistor (1) is connected with a single chip microcomputer (7) after a sampling signal is amplified by an A-phase differential amplifier (4); a B-phase sampling resistor (2) is connected with the single chip microcomputer (7) after a sampling signal is amplified by a B-phase differential amplifier (6); a C-phase sampling resistor (3) is connected with the single chip microcomputer (7) after a sampling signal is amplified by a C-phase differential amplifier (3); after acquired data is subjected to analog-digital conversion by the single chip microcomputer (7), current is displayed by an LED (Light Emitting Diode) digital display (8) in real time; meanwhile, the current is output to an interface circuit (10) by an optoelectronic isolation module (9) and is used for the collection of other auto control instruments.

Description

technical field [0001] The invention relates to an industrial three-phase isolated ammeter, which belongs to the field of automatic instruments. Background technique [0002] At present, because the working environment of the industrial site is relatively harsh and the interference is extremely strong, an anti-interference ammeter is needed. Contents of the invention [0003] The invention relates to an industrial three-phase isolation ammeter to realize the purpose of collecting current under the condition of anti-interference. [0004] To achieve the above-mentioned purpose, the present invention adopts following technical scheme: [0005] An industrial three-phase isolated ammeter comprising: [0006] A-phase sampling resistor (1), B-phase sampling resistor (2), C-phase sampling resistor (3), A-phase differential amplifier (4), C-phase differential amplifier (5), B-phase differential amplifier (6), microcontroller ( 7), LED digital display (8), photoelectric isolati...

Claims

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Application Information

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IPC IPC(8): G01R19/25
Inventor 高洁淡博
Owner HARBIN SANHE JIAMEI TECH DEV
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