High-accuracy multichannel alternating voltage and current detection device

An AC voltage and current detection technology, applied in current detection equipment and voltage fields, to simplify circuit construction and improve detection accuracy.

Inactive Publication Date: 2013-04-03
TOEC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Problems solved by the present invention: 1. The accur

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Embodiment Construction

[0016] In order to understand the present invention more clearly, describe the present invention in detail in conjunction with accompanying drawing and embodiment:

[0017] Such as figure 1 As shown, the host detection circuit of the high-precision multi-channel AC voltage and current detection equipment includes a liquid crystal display module and a data acquisition and detection module, and the data acquisition and detection module includes a single-chip microcomputer, a Hall voltage sensor, a Hall current sensor and an AD conversion integrated circuit

[0018] The single chip microcomputer adopts C8051F020;

[0019] Hall voltage sensor adopts HNV-025A;

[0020] Hall current sensor adopts HNC-50LA

[0021] The AD conversion integrated circuit adopts AD536A;

[0022] The A / D ports of the single-chip microcomputer are respectively connected with the output pins of a plurality of AD conversion integrated circuits AD536A; the input pins of the AD conversion integrated cir...

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Abstract

The invention relates to a high-accuracy multichannel alternating voltage and current detection device. A main engine detection circuit comprises a liquid crystal display module and a data collection detecting module. The data collection detecting module comprises a single chip microcomputer (SCM), a Hall voltage sensor, a Hall current sensor and an analog-digital (AD) switch integrated circuit, wherein an alternating current which is to be detected is input to the primary side of the Hall current sensor, an induced alternating current is output from the secondary side of the Hall current sensor and converted to a direct current signal with a current of 0-0.5 mA through the AD switch integrated circuit AD536A, then the direct current signal is sent to an SCM analog input port by resistance partial voltage and calculated and processed by an SCM procedure, a data processing result is transmitted to the liquid crystal display module through an SCM data interface and displayed on a liquid crystal display screen, and furthermore the data processing result is sent to an external control device through a serial port 232. An alternating current true virtual value is converted into the direct voltage signal by using the Hall components and the AD536A, and therefore detection precision is improved and circuit building work is simplified.

Description

technical field [0001] The invention relates to voltage and current detection equipment, in particular a high-precision multi-channel AC voltage and current detection equipment. technical background [0002] Now, with the development of electronic technology, various instruments and equipment have higher requirements for precision, and the stability of power supply has also increased, especially for equipment that requires AC power supply. And this invention is specially designed for the equipment that needs AC power supply. Problems solved by the invention: 1. The accuracy of the detected AC voltage and current is improved. 2. Realize multi-channel detection and display on the LCD screen. Contents of the invention [0003] The purpose of the present invention is to provide a high-precision multi-channel AC voltage and current detection equipment design scheme according to the needs of the prior art, in order to solve the problems of simultaneous detection of multiple AC...

Claims

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Application Information

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IPC IPC(8): G01R19/25
Inventor 邹建国刘秀兰邱惠昌郝彬杨新辉王保文
Owner TOEC TECH
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