CN106908751A - It is a kind of can straightened up in place multifunctional intellectual electric instrument - Google Patents

It is a kind of can straightened up in place multifunctional intellectual electric instrument Download PDF

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Publication number
CN106908751A
CN106908751A CN201710079299.8A CN201710079299A CN106908751A CN 106908751 A CN106908751 A CN 106908751A CN 201710079299 A CN201710079299 A CN 201710079299A CN 106908751 A CN106908751 A CN 106908751A
Authority
CN
China
Prior art keywords
input signal
special metering
transformer
voltage
straightened
Prior art date
Application number
CN201710079299.8A
Other languages
Chinese (zh)
Inventor
李小海
赵巨刚
Original Assignee
上海双宾电气有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海双宾电气有限公司 filed Critical 上海双宾电气有限公司
Priority to CN201710079299.8A priority Critical patent/CN106908751A/en
Publication of CN106908751A publication Critical patent/CN106908751A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the preceding groups
    • G01R35/04Testing or calibrating of apparatus covered by the preceding groups of instruments for measuring time integral of power or current

Abstract

The present invention disclose it is a kind of can straightened up in place multifunctional intellectual electric instrument, including display and key-press module, communication module, storage chip, input/output interface circuit, the special metering IC A, the special metering IC B, voltage x current input signal processing circuit A and voltage x current input signal processing circuit B, the CPU connects display and key-press module respectively, communication module, storage chip, input/output interface circuit, the special metering IC A and the special metering IC B, the present invention can the multifunctional intellectual electric instrument of straightened up in place can be after the curtage transformer that Pan Guichang installs external, carry out the examination and test of products before once Pan Guichang dispatches from the factory and the work of instrument calibration, the problems such as improving the degree of accuracy and the phase angle due to external transformer, the problem of the measuring accuracy reduction for being brought.

Description

It is a kind of can straightened up in place multifunctional intellectual electric instrument

Technical field

The present invention relates to a kind of electric instrument, specifically it is a kind of can straightened up in place multifunctional intellectual electric instrument.

Background technology

Existing intelligent electric instrument carries out calibration when calibration dispatch from the factory using standard signal source, and multi-functional intelligence The electric current input of energy electric instrument is general all in the range of 5A, and voltage sample also has the scope of a bit, when actually used, user The current transformer or voltage transformer of an external rated transformation ratio are also needed to, by actual current transformation to 5A scopes, actual electricity Buckling is changed to interior in the input range of instrument permission, due to the degree of accuracy of transformer for accessing and angular difference etc., will cause actual When actually used, the precision reduction of metering, it is impossible to meet actual application requirement.

The content of the invention

It is an object of the invention to provide a kind of simple structure, it is easy to use can straightened up in place multifunctional intellectual electric power Instrument, to solve the problems, such as to be proposed in above-mentioned background technology.

To achieve the above object, the present invention provides following technical scheme:

It is a kind of can straightened up in place multifunctional intellectual electric instrument, including display with key-press module, communication module, storage chip, Input/output interface circuit, the special metering IC A, the special metering IC B, voltage x current input signal processing circuit A and voltage Current input signal process circuit B, it is defeated with key-press module, communication module, storage chip, input that the CPU connects display respectively Outgoing interface circuit, the special metering IC A and the special metering IC B, the special metering IC A are also connected with voltage x current input signal Reason circuit A, the special metering IC B are also connected with voltage x current input signal processing circuit B, and input signal processing circuit A is also connected with Transformer A, transformer A are also connected with external voltage current input module, and input signal processing circuit B is also connected with transformer B, mutual inductance Device B is also connected with external voltage current input module.

As preferred scheme of the invention:The CPU is single-chip microcomputer.

Compared with prior art, the beneficial effects of the invention are as follows:The present invention can straightened up in place multifunctional intellectual electric power instrument Table can after the curtage transformer that Pan Guichang installs external, carry out the examination and test of products before once Pan Guichang dispatches from the factory and Instrument calibration work, improve due to external transformer the degree of accuracy and phase angle the problems such as, brought measuring accuracy reduction Problem.

Brief description of the drawings

Fig. 1 is system architecture diagram of the invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Refer to Fig. 1, it is a kind of can straightened up in place multifunctional intellectual electric instrument, including display and key-press module, communication At module, storage chip, input/output interface circuit, the special metering IC A, the special metering IC B, voltage x current input signal Reason circuit A and voltage x current input signal processing circuit B, the CPU connect display and key-press module, communication module, deposit respectively Storage chip, input/output interface circuit, the special metering IC A and the special metering IC B, the special metering IC A are also connected with voltage Current input signal process circuit A, the special metering IC B is also connected with voltage x current input signal processing circuit B, at input signal Reason circuit A is also connected with transformer A, and transformer A is also connected with external voltage current input module, and input signal processing circuit B also connects Transformer B is met, transformer B is also connected with external voltage current input module.

CPU is single-chip microcomputer.

Operation principle of the invention is:Theory diagram of the invention is as shown in figure 1, have two sets in the intelligent electric instrument The special metering IC, and according to the practical application of user, there is provided standard set electric current and voltage transformer are good in user installation After external circuitses, the current transformer or voltage transformer of user's offer are input to simultaneously using certain voltage or electric current, with On curtage transformer after correction, electric instrument is set and is in live calibration pattern, instrument will be according to special measuring core Data obtained by piece 2, correct the relevant parameter of special chip 1, complete calibration work, and correction is brought by external transformer Certainty of measurement reduction problem.

Claims (2)

1. it is a kind of can straightened up in place multifunctional intellectual electric instrument, including display with key-press module, communication module, storage core Piece, input/output interface circuit, the special metering IC A, the special metering IC B, voltage x current input signal processing circuit A and electricity Current voltage input signal processing circuit B, it is characterised in that the CPU connect respectively display with key-press module, communication module, deposit Storage chip, input/output interface circuit, the special metering IC A and the special metering IC B, the special metering IC A are also connected with voltage Current input signal process circuit A, the special metering IC B is also connected with voltage x current input signal processing circuit B, at input signal Reason circuit A is also connected with transformer A, and transformer A is also connected with external voltage current input module, and input signal processing circuit B also connects Transformer B is met, transformer B is also connected with external voltage current input module.
2. it is according to claim 1 it is a kind of can straightened up in place multifunctional intellectual electric instrument, it is characterised in that it is described CPU is single-chip microcomputer.
CN201710079299.8A 2017-02-14 2017-02-14 It is a kind of can straightened up in place multifunctional intellectual electric instrument CN106908751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710079299.8A CN106908751A (en) 2017-02-14 2017-02-14 It is a kind of can straightened up in place multifunctional intellectual electric instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710079299.8A CN106908751A (en) 2017-02-14 2017-02-14 It is a kind of can straightened up in place multifunctional intellectual electric instrument

Publications (1)

Publication Number Publication Date
CN106908751A true CN106908751A (en) 2017-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710079299.8A CN106908751A (en) 2017-02-14 2017-02-14 It is a kind of can straightened up in place multifunctional intellectual electric instrument

Country Status (1)

Country Link
CN (1) CN106908751A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202649318U (en) * 2012-04-18 2013-01-02 江阴东瑞电气有限公司 Multifunctional electric power meter with voltage phase sequence detection function
CN102981047A (en) * 2012-12-20 2013-03-20 贝克电气(江苏)有限公司 Multifunctional digital meter
CN202975314U (en) * 2012-12-07 2013-06-05 浙江涵普电力科技有限公司 Field calibration instrument of digital electric energy meter
CN106093841A (en) * 2016-08-25 2016-11-09 海盐星创电子有限公司 A kind of hand-held electric energy meter on-site calibrator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202649318U (en) * 2012-04-18 2013-01-02 江阴东瑞电气有限公司 Multifunctional electric power meter with voltage phase sequence detection function
CN202975314U (en) * 2012-12-07 2013-06-05 浙江涵普电力科技有限公司 Field calibration instrument of digital electric energy meter
CN102981047A (en) * 2012-12-20 2013-03-20 贝克电气(江苏)有限公司 Multifunctional digital meter
CN106093841A (en) * 2016-08-25 2016-11-09 海盐星创电子有限公司 A kind of hand-held electric energy meter on-site calibrator

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Application publication date: 20170630