CN205301562U - Multi -functional instrument debugging circuit - Google Patents
Multi -functional instrument debugging circuit Download PDFInfo
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- CN205301562U CN205301562U CN201521110076.6U CN201521110076U CN205301562U CN 205301562 U CN205301562 U CN 205301562U CN 201521110076 U CN201521110076 U CN 201521110076U CN 205301562 U CN205301562 U CN 205301562U
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- instrument
- standard source
- error
- under test
- debugging circuit
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Abstract
The utility model provides a multi -functional instrument debugging circuit, including standard source, PC and error measuring apparatu, the standard source awaits measuring the instrument with error measuring apparatu and a plurality of respectively and links to each other, the PC respectively with standard source and a plurality of await measuring the instrument and link to each other, a plurality of await measuring the instrument respectively with the error measuring apparatu links to each other, the error measuring apparatu links to each other with the PC. The order is sent out for standard source output standard voltage electric current to the PC, then gives the instrument that awaits measuring and send out the table order of a broadcasting school, by awaiting measuring the instrument from the column count correction coefficient and handle, then carries out the error by the error measuring apparatu and measures, and data are transferred to the PC and are judged whether qualified the instrument calibration is, and a plurality of instrument can be debugged simultaneously to this debugging circuit, have advantages such as the debugging is quick, accuracy.
Description
Technical field
This utility model belongs to instrument debugging field, especially relates to a kind of multifunction instrument debugging circuit.
Background technology
The debugging of electric instrument is a complicated synthetic operation, generally comprises the calibration of voltage, electric current, frequency, power equally accurate. Current scheduling and planning method, as in figure 2 it is shown, adopt separate unit calibrating indicating instrument, its process is: PC sends commands to standard source, standard source outputting standard voltage, current signal are to instrument, and then the electric energy error of the measured value of reading instrument and standard source, is then forwarded to instrument after PC correction coefficient. This mode calibration is only capable of surveying one every time, there is the technical problems such as debugging time length, efficiency are low.
Summary of the invention
In view of this, this utility model be directed to a kind of debugging efficiency high multifunction instrument debugging circuit, with realize to instrument quick, accurately debug.
For reaching above-mentioned purpose, the technical solution of the utility model is 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, standard source is meters under test 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 to meters under test, PC sends calibration order to meters under test, several meters under test described are connected with described error meter respectively, electrical energy impulse signals that error meter is exported by meters under test and the standard electric energy impulse signal contrast of standard source output, carry out error measure, described error meter is connected with PC, 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 the electrical energy impulse signals of meters under test output, the outfan of described optical coupling isolator is connected with the input of described master chip, the outfan of described master chip is connected with described LCD display and RS485 interface respectively, described RS485 interface outputting communication signal.Master chip contrasts by measuring pulse and the calibration pulse of meters under test input, calculates electric energy error, then carries out communication and uploads 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 described in the utility model debugging circuit has the advantage that PC says the word to standard source outputting standard voltage x current, then broadcast calibration order is sent out to meters under test, calculated correction coefficient by meters under test voluntarily and process, then error measure is carried out by error meter, data transfer to PC to judge whether calibrating indicating instrument qualified, this debugging circuit can debug multiple instrument simultaneously; Have and debug the advantages such as quick, accurate.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model. In the accompanying drawings:
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the schematic diagram of electric instrument debugging in prior art;
Fig. 3 is the schematic diagram of error meter in this utility model.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1, 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, standard source is meters under test 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 to meters under test, PC sends calibration order to meters under test, several meters under test described are connected with described error meter respectively, electrical energy impulse signals that error meter is exported by meters under test and the standard electric energy impulse signal contrast of standard source output, carry out error measure, described error meter is connected with PC, error measuring value is exported to PC by error meter. by RS485 bus transfer data between described PC and meters under test. by RS485 bus transfer data between described PC and error meter. by RS232 bus transfer data between described PC and standard source.
As shown in Figure 3, 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 the electrical energy impulse signals of meters under test output, the outfan of described optical coupling isolator is connected with the input of described master chip, 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. Master chip contrasts by measuring pulse and the calibration pulse of meters under test input, calculates electric energy error, then carries out communication and uploads and show on the spot with LCD.
The work process of this example: PC occurs order to standard source, standard source outputting standard voltage, normalized current are to multiple meters under test, then PC sends broadcast calibration order to multiple meters under test, calculated correction coefficient by instrument voluntarily and process, then output electrical energy pulse is to error meter, electrical energy impulse signals that error meter is exported by meters under test and the standard electric energy impulse signal contrast of standard source output, carry out error measure, send error measuring value to PC, PC judges that whether calibrating indicating instrument is qualified, completes the debugging of calibrating indicating instrument.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (6)
1. a multifunction instrument debugging circuit, it is characterized in that: include standard source, PC and error meter, described standard source is connected with error meter and several meters under test respectively, described PC is connected with described standard source and several meters under test respectively, several meters under test described are connected with described error meter respectively, and described error meter is connected with PC.
2. a kind of multifunction instrument debugging circuit according to claim 1, it is characterized in that: 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 the electrical energy impulse signals of meters under test output, the outfan of described optical coupling isolator is connected with the input of described master chip, the outfan of described master chip is connected with described LCD display and RS485 interface respectively, described RS485 interface outputting communication signal.
3. a kind of multifunction instrument debugging circuit according to claim 2, it is characterised in that: described master chip model is: dsPIC33F128GP306.
4. a kind of multifunction instrument debugging circuit according to claim 1 and 2, it is characterised in that: by RS485 bus transfer data between described PC and meters under test.
5. a kind of multifunction instrument debugging circuit according to claim 1 and 2, it is characterised in that: by RS485 bus transfer data between described PC and error meter.
6. a kind of multifunction instrument debugging circuit according to claim 1 and 2, it is characterised in that: by RS232 bus transfer data between described PC and standard source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110076.6U CN205301562U (en) | 2015-12-27 | 2015-12-27 | Multi -functional instrument debugging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110076.6U CN205301562U (en) | 2015-12-27 | 2015-12-27 | Multi -functional instrument debugging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301562U true CN205301562U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521110076.6U Expired - Fee Related CN205301562U (en) | 2015-12-27 | 2015-12-27 | Multi -functional instrument debugging circuit |
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| Country | Link |
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| CN (1) | CN205301562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938185A (en) * | 2015-12-27 | 2016-09-14 | 天津市品通电力科技有限公司 | Multifunctional instrument debugging circuit |
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2015
- 2015-12-27 CN CN201521110076.6U patent/CN205301562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938185A (en) * | 2015-12-27 | 2016-09-14 | 天津市品通电力科技有限公司 | Multifunctional instrument debugging circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20191227 |