CN105938185A - Multifunctional instrument debugging circuit - Google Patents

Multifunctional instrument debugging circuit Download PDF

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Publication number
CN105938185A
CN105938185A CN201510999289.7A CN201510999289A CN105938185A CN 105938185 A CN105938185 A CN 105938185A CN 201510999289 A CN201510999289 A CN 201510999289A CN 105938185 A CN105938185 A CN 105938185A
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CN
China
Prior art keywords
standard source
under test
error
debugging circuit
instrument
Prior art date
Application number
CN201510999289.7A
Other languages
Chinese (zh)
Inventor
杨立军
Original Assignee
天津市品通电力科技有限公司
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 天津市品通电力科技有限公司 filed Critical 天津市品通电力科技有限公司
Priority to CN201510999289.7A priority Critical patent/CN105938185A/en
Publication of CN105938185A publication Critical patent/CN105938185A/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
    • G01R35/005Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references

Abstract

Provided in the invention is a multifunctional instrument debugging circuit comprising a standard source, a PC machine, and an error measuring instrument. The standard source is connected with the error measuring instrument and a plurality of to-be-measured instruments. The PC machine is connected with the standard source and the plurality of to-be-measured instruments connected with the error measuring instrument; and the error measuring instrument is connected with the PC machine. The PC machine sends a command to the standard source to output a standard voltage and a standard current and sends broadcast instrument calibrating commands to the to-be-measured instruments; the to-be-measured instruments calculate correction coefficients and carry out processing by themselves; and the error measuring instrument carries out error measurement, the data are sent to the PC machine and the PC machine determines whether the instrument verification is qualified or not. According to the debugging circuit, multiple instruments can be debugged simultaneously. The debugging circuit has advantages of fast debugging and high accuracy.

Description

A kind of multifunction instrument debugging circuit

Technical field

The invention belongs to instrument debugging field, especially relate to a kind of multifunction instrument debugging circuit.

Background technology

The debugging of electric instrument is a complicated synthetic operation, generally comprise voltage, electric current, frequency, The calibration of power equally accurate.Current scheduling and planning method, as in figure 2 it is shown, use separate unit calibrating indicating instrument, Its process is: PC sends commands to standard source, standard source outputting standard voltage, current signal to instrument, Then read the measured value of instrument and the electric energy error of standard source, after PC correction coefficient, be then forwarded to instrument Table.This mode calibration is only capable of surveying one every time, there is the technical problems such as debugging time length, efficiency is low.

Summary of the invention

In view of this, it is contemplated that propose a kind of debugging efficiency much higher function instrument debugging circuit, with Realize to instrument quick, accurately debug.

For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:

A kind of multifunction instrument debugging circuit, including standard source, PC and error meter, described standard Source is connected with error meter and several meters under test respectively, and standard source is that meters under test inputs standard electric Current voltage, described PC is connected with described standard source and several meters under test respectively, and PC is to standard Source sends order makes its outputting standard voltage x current send calibration life to meters under test, PC to meters under test Order, several meters under test described are connected with described error meter respectively, and error meter is by be measured The electrical energy impulse signals of instrument output and the standard electric energy impulse signal contrast of standard source output, carry out error Measuring, described error meter is connected with PC, and error measuring value is exported to PC by error meter.

Further, described error meter includes optical coupling isolator, master chip, LCD display and RS485 Interface, the input of described optical coupling isolator accesses the standard electrical energy impulse signals of standard source output and to be measured The electrical energy impulse signals of instrument output, the outfan of described optical coupling isolator and the input of described master chip Being connected, the outfan of described master chip is connected with described LCD display and RS485 interface respectively, described RS485 interface outputting communication signal.Master chip is by measuring pulse and the calibration pulse of meters under test input Contrast, calculate electric energy error, then carry out communication and upload and show on the spot with LCD.

Further, described master chip model is: dsPIC33F128GP306.

Further, by RS485 bus transfer data between described PC and meters under test.

Further, by RS485 bus transfer data between described PC and error meter.

Further, by RS232 bus transfer data between described PC and standard source.

Relative to prior art, multifunction instrument of the present invention debugging circuit has the advantage that PC Machine says the word to standard source outputting standard voltage x current, then sends out broadcast calibration order to meters under test, by Meters under test calculates correction coefficient voluntarily and processes, and is then carried out error measure, data by error meter Calibrating indicating instrument is the most qualified to transfer to PC to judge, this debugging circuit can debug multiple instrument simultaneously;Tool There is advantages such as debugging quickly, accurate.

Accompanying drawing explanation

The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.? In accompanying drawing:

Fig. 1 is the schematic diagram of the present invention;

Fig. 2 is the schematic diagram of electric instrument debugging in prior art;

Fig. 3 is the schematic diagram of error meter in the present invention.

Detailed description of the invention

It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment Levy and can be mutually combined.

Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

As it is shown in figure 1, a kind of multifunction instrument debugging circuit, including standard source, PC and error measure Instrument, described standard source is connected with error meter and several meters under test respectively, and standard source is instrument to be measured Table input normal voltage electric current, described PC is connected with described standard source and several meters under test respectively, PC sends order to standard source makes its outputting standard voltage x current give instrument to be measured to meters under test, PC Table sends calibration order, and several meters under test described are connected with described error meter respectively, and error is surveyed Measure electrical energy impulse signals and the standard electrical energy impulse signals of standard source output that instrument is exported by meters under test Contrast, carries out error measure, and described error meter is connected with PC, and error is surveyed by error meter Value exports to PC.By RS485 bus transfer data between described PC and meters under test.Institute State between PC and error meter by RS485 bus transfer data.Described PC and standard source it Between by RS232 bus transfer data.

As it is shown on figure 3, described error meter include optical coupling isolator, master chip, LCD display and RS485 interface, the input of described optical coupling isolator accesses the standard electrical energy impulse signals of standard source output With the electrical energy impulse signals of meters under test output, the outfan of described optical coupling isolator and described master chip Input is connected, and the outfan of described master chip is connected with described LCD display and RS485 interface respectively, Described RS485 interface outputting communication signal, described master chip model is: dsPIC33F128GP306.Main Chip contrasts with calibration pulse by measuring the pulse of meters under test input, calculates electric energy error, Then carry out communication to upload and show on the spot with LCD.

The work process of this example: PC occurs order to standard source, standard source outputting standard voltage, mark Quasi-electric current is to multiple meters under test, and then PC sends broadcast calibration order to multiple meters under test, by Instrument calculates correction coefficient voluntarily and processes, and then output electrical energy pulse is to error meter, error measure Electrical energy impulse signals that instrument is exported by meters under test and the standard electrical energy impulse signals pair of standard source output Ratio, carries out error measure, and error measuring value sends to PC, and PC judges whether calibrating indicating instrument closes Lattice, complete the debugging of calibrating indicating instrument.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in Within protection scope of the present invention.

Claims (6)

1. a multifunction instrument debugging circuit, it is characterised in that: include standard source, PC and error Measuring instrument, described standard source is connected with error meter and several meters under test respectively, described PC Being connected with described standard source and several meters under test respectively, several meters under test described are respectively with described Error meter is connected, and described error meter is connected with PC.
A kind of multifunction instrument debugging circuit the most according to claim 1, it is characterised in that: institute State error meter and include optical coupling isolator, master chip, LCD display and RS485 interface, described light The standard electrical energy impulse signals of the input access standard source output of coupling isolator and meters under test export Electrical energy impulse signals, the outfan of described optical coupling isolator is connected with the input of described master chip, described The outfan of master chip is connected with described LCD display and RS485 interface respectively, described RS485 interface Outputting communication signal.
A kind of multifunction instrument debugging circuit the most according to claim 2, it is characterised in that: institute Stating master chip model is: dsPIC33F128GP306.
A kind of multifunction instrument debugging circuit the most according to claim 1 and 2, it is characterised in that: By RS485 bus transfer data between described PC and meters under test.
A kind of multifunction instrument debugging circuit the most according to claim 1 and 2, it is characterised in that: By RS485 bus transfer data between described PC and error meter.
A kind of multifunction instrument debugging circuit the most according to claim 1 and 2, it is characterised in that: By RS232 bus transfer data between described PC and standard source.
CN201510999289.7A 2015-12-27 2015-12-27 Multifunctional instrument debugging circuit CN105938185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510999289.7A CN105938185A (en) 2015-12-27 2015-12-27 Multifunctional instrument debugging circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510999289.7A CN105938185A (en) 2015-12-27 2015-12-27 Multifunctional instrument debugging circuit

Publications (1)

Publication Number Publication Date
CN105938185A true CN105938185A (en) 2016-09-14

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CN201510999289.7A CN105938185A (en) 2015-12-27 2015-12-27 Multifunctional instrument debugging circuit

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2323379Y (en) * 1998-03-26 1999-06-09 北京市无线电技术研究所 Extension standard electric energy meter on-line testing device
CN101149425A (en) * 2007-10-29 2008-03-26 哈尔滨电工仪表研究所 Electronic electric energy meter debugging, checkout automated system
CN101900799A (en) * 2009-09-30 2010-12-01 广东电网公司电力科学研究院 Digital electric energy meter checking device based on analog source tracing method
CN102680932A (en) * 2012-05-10 2012-09-19 江苏省电力公司电力科学研究院 Precision test device and method of electric energy quality monitor
CN202903993U (en) * 2012-10-26 2013-04-24 郑州瑞能电气有限公司 Portable on-site calibrator for electric energy collection terminal
CN203673061U (en) * 2013-12-31 2014-06-25 国家电网公司 Onsite detecting system for electric energy meter
CN104330765A (en) * 2014-11-12 2015-02-04 成都天兴电气有限公司 Satellite navigation system based electric-energy-meter field calibration device
CN204855771U (en) * 2015-06-29 2015-12-09 国家电网公司 Electric energy quality on -line monitoring device's test system
CN205301562U (en) * 2015-12-27 2016-06-08 天津市品通电力科技有限公司 Multi -functional instrument debugging circuit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2323379Y (en) * 1998-03-26 1999-06-09 北京市无线电技术研究所 Extension standard electric energy meter on-line testing device
CN101149425A (en) * 2007-10-29 2008-03-26 哈尔滨电工仪表研究所 Electronic electric energy meter debugging, checkout automated system
CN101900799A (en) * 2009-09-30 2010-12-01 广东电网公司电力科学研究院 Digital electric energy meter checking device based on analog source tracing method
CN102680932A (en) * 2012-05-10 2012-09-19 江苏省电力公司电力科学研究院 Precision test device and method of electric energy quality monitor
CN202903993U (en) * 2012-10-26 2013-04-24 郑州瑞能电气有限公司 Portable on-site calibrator for electric energy collection terminal
CN203673061U (en) * 2013-12-31 2014-06-25 国家电网公司 Onsite detecting system for electric energy meter
CN104330765A (en) * 2014-11-12 2015-02-04 成都天兴电气有限公司 Satellite navigation system based electric-energy-meter field calibration device
CN204855771U (en) * 2015-06-29 2015-12-09 国家电网公司 Electric energy quality on -line monitoring device's test system
CN205301562U (en) * 2015-12-27 2016-06-08 天津市品通电力科技有限公司 Multi -functional instrument debugging circuit

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Application publication date: 20160914