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Multifunctional power tester based on high-pass filter circuit

A high-pass filter circuit, multi-functional technology, applied in the direction of electric power measurement by current/voltage, parts and instruments of electrical measuring instruments, etc., can solve problems such as single function, and achieve the effect of avoiding misjudgment and high precision

Inactive Publication Date: 2016-04-20
CHENGDU HONGKAIRUI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect of the single function of the existing power tester, and provide a multifunctional power tester based on a high-pass filter circuit

Method used

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Embodiment

[0021] Such as figure 1 Shown, the multifunctional power tester based on the high-pass filter circuit of the present invention mainly consists of a single-chip microcomputer, a signal conversion module connected with the single-chip microcomputer, a phase detection circuit and a display, a voltage sampling and holding circuit connected with the signal conversion module respectively and A current sampling and holding circuit, a voltage sensor connected to the voltage sampling and holding circuit, a voltage comparison circuit connected to the voltage sensor, a high-pass filter circuit connected to the voltage comparison circuit, a current sensor connected to the current sampling and holding circuit, and a The current sensor is connected with a current comparison circuit; the phase detection circuit is also connected with the current comparison circuit and the high-pass filter circuit at the same time.

[0022] Wherein, single-chip microcomputer is as the processing center of the...

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Abstract

The invention discloses a multifunctional power tester based on a high-pass filter circuit. The multifunctional power tester is mainly composed of a single-chip microcomputer, a voltage transducer and a current transducer. The multifunctional power tester is further composed of a signal conversion module, a phase detection circuit and a display which are respectively connected with the single-chip microcomputer, a voltage sampling maintaining circuit and a current sampling maintaining circuit which are respectively connected with the signal conversion module, and a current comparison circuit and a voltage comparison circuit which are respectively connected with the phase detection circuit, wherein the voltage transducer is connected in series between voltage sampling maintaining circuit and the voltage comparison circuit, and the current transducer is connected in series between the current sampling maintaining circuit and the current comparison circuit. The multifunctional power tester is characterized in that the high-pass filter circuit is also connected in series between the voltage comparison circuit and the phase detection circuit. According to the invention, through arrangement of the high-pass filter circuit, the high-pass filter circuit can filter interference signals mingled in square wave signals and prevent the interference signals from affecting the test precision of the multifunctional power tester.

Description

technical field [0001] The invention relates to a power tester, in particular to a multifunctional power tester based on a high-pass filter circuit. Background technique [0002] At present, the power tester has been widely used in the online detection and maintenance of industrial equipment. However, the traditional power tester has a single function, which is limited to detecting the power of the equipment, but cannot detect the key operating parameters such as the operating voltage and current of the equipment, so it cannot fully reflect the operation of the equipment. Contents of the invention [0003] The purpose of the present invention is to overcome the single-function defect of the existing power tester, and provide a multi-functional power tester based on a high-pass filter circuit. [0004] The purpose of the present invention is achieved through the following technical solutions: a multifunctional power tester based on high-pass filter circuit, mainly consists...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R21/06G01R19/00G01R1/30
CPCG01R1/30G01R19/00G01R21/06
Inventor 韩群艳
Owner CHENGDU HONGKAIRUI TECH CO LTD
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