CN105785303A - Grounding ohmmeter calibrating device - Google Patents
Grounding ohmmeter calibrating device Download PDFInfo
- Publication number
- CN105785303A CN105785303A CN201610243677.7A CN201610243677A CN105785303A CN 105785303 A CN105785303 A CN 105785303A CN 201610243677 A CN201610243677 A CN 201610243677A CN 105785303 A CN105785303 A CN 105785303A
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- China
- Prior art keywords
- resistance
- module
- ohm
- standard
- measuring resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
Abstract
A grounding ohmmeter calibrating device mainly comprises two main parts including a control module and a standard resistor array, wherein the control module comprises a CPU controller respectively connected with a keyboard, a turn button module and a liquid crystal screen module. The CPU controller is connected with selection relays serially connected in standard resistor loops through a relay driving module and the standard resistor array connected together, and the CPU controller is formed by an ARM9 high-speed MCU chip. The CUP controller is externally connected with the liquid crystal screen module formed by a 640*480 true color display screen, and accesses to a computer through an industrial standard RS232 external communication interface. The standard resistor array comprises a plurality of standard resistors with different resistance, and the standard resistors are respectively and serially connected with respective selection relays to form standard resistor loops. At least two resistors connected behind the standard resistor loops are serially connected with respective selection relays to form auxiliary resistor loops. The grounding ohmmeter calibrating device is reasonable and compact in structure, and convenient for use. The grounding ohmmeter calibrating device supports standard resistance adjustment through buttons, and also supports control and adjustment through communication. Work efficiency can be substantially increased.
Description
Technical field
The present invention relates to a kind of grounding electric resistance meter detecting device, belong to power measure meters Calibration Technology field.
Background technology
The calibrating of current earth resistance meter both domestic and external generally uses traditional grounding electric resistance meter detecting device, and these assay devices are exactly substantially one group of standard resistance box with rotator, during use, it is necessary to manually each knob is carried out manual rotation dial-up；Undertaken the reading of each knob being added again during reading obtaining final standard electric resistance, then also need manually to carry out error analysis calculation and just can obtain the error of tested earth resistance meter, use very loaded down with trivial details, extremely inefficient.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, and provide a kind of rational in infrastructure compact, use easy to operate, both supported to carry out standard resistance adjustment by button, also support to be controlled regulating by communication；Support liquid crystal display screen shows, supports standard electric resistance direct-reading, also supports to be read out by communication, can significantly improve the grounding electric resistance meter detecting device of work efficiency.
It is an object of the invention to complete by following technical solution, a kind of grounding electric resistance meter detecting device, it is mainly controlled module by one and a measuring resistance array two large divisions forms, described control module includes a cpu controller being connected to keyboard and Knob module, liquid crystal screen module, and this cpu controller is connected with the selective relay being serially connected in measuring resistance array in each measuring resistance loop by the relay driving module being connected.
As preferably: described cpu controller is made up of ARM9 high speed MCU chip, the external liquid crystal screen module being made up of the true colour display screen display screen of 640*480 of this cpu controller, adopt the external communication interface of industrial standard RS232 to access computer；
Described measuring resistance array includes being concatenated respective selective relay respectively by the measuring resistance of multiple different resistances and forms measuring resistance loop, is separately connected to after described measuring resistance loop and is at least each concatenated, by two auxiliary resistances, the auxiliary resistance loop that respective selective relay forms.
As preferably: when the resistance of described measuring resistance Rn is arranged on below 1 ohm, take integer gear, be followed successively by 0.0001 ohm, 0.007 ohm, 0.2 ohm；And 0.201 ohm of survey can not be arranged；
When the resistance of described measuring resistance Rn is arranged on more than 1 ohm, take any number in units of ohm, including 1,2,3,4,5 and 6 ohm.
The present invention has rational in infrastructure compact, uses easy to operate, has both supported to carry out standard resistance adjustment by button, also supports to be controlled regulating by communication；Support liquid crystal display screen shows, supports standard electric resistance direct-reading, also supports to be read out by communication, can significantly improve the features such as work efficiency.
Accompanying drawing explanation
Fig. 1 is the control module composition frame chart of the present invention.
Fig. 2 is measuring resistance array schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail: Fig. 1, shown in 2, a kind of grounding electric resistance meter detecting device of the present invention, it is mainly controlled module by one and a measuring resistance array two large divisions forms, described control module includes a cpu controller 3 being connected to keyboard and Knob module 1, liquid crystal screen module 2, and this cpu controller 3 is connected with the selective relay being serially connected in measuring resistance array in each measuring resistance loop by the relay driving module 4 being connected.
Cpu controller 3 of the present invention is made up of ARM9 high speed MCU chip, the external liquid crystal screen module 2 being made up of the true colour display screen display screen of 640*480 of this cpu controller 3, adopts the external communication interface 5 of industrial standard RS232 to access computer；Described control module is provided working power by power-supply system 6.
Described measuring resistance array includes being concatenated respective selective relay RL1, RL2 ... RLn respectively by multiple different the measuring resistance R1 of resistance, R2 ... Rn and forms measuring resistance loop, is separately connected to after described measuring resistance loop and is at least concatenated, by two auxiliary resistances Rp, Rc, the auxiliary resistance loop that respective selective relay RLpc1, RLpc2 form respectively.
When the resistance of measuring resistance Rn of the present invention is arranged on below 1 ohm, take integer gear, be followed successively by 0.0001 ohm, 0.007 ohm, 0.2 ohm；And 0.201 ohm of survey can not be arranged；
When the resistance of described measuring resistance Rn is arranged on more than 1 ohm, take any number in units of ohm, including 1,2,3,4,5 and 6 ohm.
Embodiment: grounding electric resistance meter detecting device of the present invention is by controlling module and measuring resistance array two large divisions forms；
Control module and adopt ARM9 high speed MCU chip controls, the true colour display screen display screen of external 640*480, and adopt the external communication interface of industrial standard RS232 can access computer, use earth resistance meter inspection administration software；The machine has keyboard, logic interfacing.
Described measuring resistance array is made up of some measuring resistances and relay assembly.In order to ensure precision, when Re resistance is arranged on 1 below Ω, only take integer gear, such as 0.0001 Ω, 0.007 Ω, 0.200 Ω.And 0.201 Ω surveys and can not arrange.When Re resistance is arranged on 1 more than Ω, then any number in units of Ω can be set, such as 1,2,3,4,5 and 6 Ω.
The performance indications of the present invention:
1) resolution: 0.001 Ω (0.001 Ω≤Re≤0.01 Ω)
0.01 Ω (0.01 Ω≤Re≤0.1 Ω)
0.1 Ω (0.1 Ω≤Re≤1 Ω)
1 Ω (1 Ω≤Re)
2) amount limit: 0.001 Ω～2k Ω
3) power: 0.2W
4) precision: 0.2%
5) working power: 220V ± 15%
The software section of the present invention is a kind of earth resistance meter verification management system, and user operation therein is mainly managed module, instrument management module, assay module and a few part of inquiry print module by model and forms.Wherein test module supports the error of indication in " JJG366-2004 earth resistance meter " vertification regulation to examine and determine completely, position impact is tested, auxiliary earth Resistance Influence is tested, ground voltage affects the pilot projects such as test.During test, tester can select semiautomatic-mode or manual mode to test as required.
Semiautomatic-mode: during test, software passes through Communication Control grounding electric resistance meter detecting device, realize automatically controlling and reading the standard electric resistance output of assay device, tester only need to carry out corresponding assist control can complete the detection to earth resistance meter, and is automatically performed the links such as follow-up Error Calculation, the revision of the convention, generation test report, archives data.
Manual mode: during test, tester needs manually grounding electric resistance meter detecting device to be controlled and reading, and need to by reading typing verification management system, then, system is automatically performed the links such as follow-up Error Calculation, the revision of the convention, generation test report, archives data.
Manual mode differs primarily in that with automatic mode: manual mode needs the output that tester's active mating earth-resistance meter assay device carries out standard electric resistance to regulate, and also by final standard electric resistance typing verification management system, and need to be automatically performed by software through communication when these are operated in semiautomatic-mode.
Increase manual mode, even if purpose is in that to be exported by the standard electric resistance of Communication Control assay device, but by tester's compounding practice, after typing standard electric resistance, software system is the same can be automatically performed the links such as follow-up Error Calculation, the revision of the convention, generation test report, archives data, also can reduce substantial amounts of workload, improve testing efficiency.
Model management module is mainly used in the model of earth resistance meter is managed, and tester can increase, delete, edit the type information of earth resistance meter in this module.In model storehouse each records the model of corresponding a kind of earth resistance meter.
Instrument management module is mainly used in the information of earth resistance meter is managed, and tester can increase, delete, edit the information of earth resistance meter in this module.The corresponding concrete earth resistance meter of each record in instrument storehouse.
Test module is one of nucleus module of native system, has been used for the test to tested earth resistance meter.This module mainly comprises conventional project, error of indication calibrating, position impact test, auxiliary earth Resistance Influence is tested, ground voltage affects five part of detecting compositions such as test.
The error of indication is examined and determine: for carrying out the elementary error test of earth resistance meter.During test, tester only need to insert measured value, and software can calculate error automatically, and carries out revision of the convention process, and marks out by underproof for revision of the convention result data redness.
Position impact test: for carrying out the position impact test of earth resistance meter.During test, tester only need to insert measured value, and software can calculate error automatically, and carries out revision of the convention process, and marks out by underproof for revision of the convention result data redness.
Auxiliary earth Resistance Influence is tested: for carrying out the auxiliary earth Resistance Influence test of earth resistance meter.During test, tester only need to insert measured value, and software can calculate error automatically, and carries out revision of the convention process, and marks out by underproof for revision of the convention result data redness.
Ground voltage impact test: for carrying out the ground voltage impact test of earth resistance meter.During test, tester only need to insert measured value, and software can calculate error automatically, and carries out revision of the convention process, and marks out by underproof for revision of the convention result data redness.
Conventional project: the project information relevant to test or tested device for filling in such as ambient temperature, ambient humidity, visual examination etc..Project information is increased, deletes management by software support tester.
Inquiry and print module are mainly used in the historical data of detection is retrieved, and generate corresponding protocol or examining report.
Intelligence inquiry is supported at data retrieval interface, all data messages of each corresponding (comprising) earth resistance meter single test of record.
The report generation of software adopts the mode based on doc template, tester can the data content of designed, designed report form template and format layout according to demand, generate the Final Report of What You See Is What You Get.
Claims (3)
1. a grounding electric resistance meter detecting device, it is mainly controlled module by one and a measuring resistance array two large divisions forms, it is characterized in that described control module includes a cpu controller being connected to keyboard and Knob module, liquid crystal screen module, this cpu controller is connected with the selective relay being serially connected in measuring resistance array in each measuring resistance loop by the relay driving module being connected.
2. grounding electric resistance meter detecting device according to claim 1, it is characterized in that described cpu controller is made up of ARM9 high speed MCU chip, the external liquid crystal screen module being made up of the true colour display screen display screen of 640*480 of this cpu controller, adopts the external communication interface of industrial standard RS232 to access computer；
Described measuring resistance array includes being concatenated respective selective relay respectively by the measuring resistance of multiple different resistances and forms measuring resistance loop, is separately connected to after described measuring resistance loop and is at least each concatenated, by two auxiliary resistances, the auxiliary resistance loop that respective selective relay forms.
3. grounding electric resistance meter detecting device according to claim 1 and 2, it is characterised in that when the resistance of described measuring resistance Rn is arranged on below 1 ohm, takes integer gear, is followed successively by 0.0001 ohm, 0.007 ohm, 0.2 ohm；And 0.201 ohm of survey can not be arranged；
When the resistance of described measuring resistance Rn is arranged on more than 1 ohm, take any number in units of ohm, including 1,2,3,4,5 and 6 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243677.7A CN105785303A (en) | 2016-04-19 | 2016-04-19 | Grounding ohmmeter calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243677.7A CN105785303A (en) | 2016-04-19 | 2016-04-19 | Grounding ohmmeter calibrating device |
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| CN105785303A true CN105785303A (en) | 2016-07-20 |
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| CN201610243677.7A Pending CN105785303A (en) | 2016-04-19 | 2016-04-19 | Grounding ohmmeter calibrating device |
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| CN (1) | CN105785303A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443547A (en) * | 2016-10-20 | 2017-02-22 | 国家电网公司 | Intelligent insulated earth resistance meter calibrating device |
| CN108710096A (en) * | 2018-08-22 | 2018-10-26 | 深圳德晋科技有限公司 | Earth-continuity tester calibrating installation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921853Y (en) * | 2006-07-03 | 2007-07-11 | 内蒙古自治区电力科学研究院 | Improved grounding electric resistance meter detecting device |
| CN201477160U (en) * | 2009-08-24 | 2010-05-19 | 华北电力科学研究院有限责任公司 | Automatic resistance box checking system |
| CN201886142U (en) * | 2010-12-14 | 2011-06-29 | 江西东华计量测试研究所 | Intelligent calibrating device for earth resistance meter |
| CN201974517U (en) * | 2011-01-27 | 2011-09-14 | 上海共联通信信息发展有限公司 | Metering detection device for earth resistance testers |
| CN102298132A (en) * | 2011-05-26 | 2011-12-28 | 福建省计量科学研究院 | Calibrating device of grounding conduction resistance tester |
| CN202582589U (en) * | 2012-05-09 | 2012-12-05 | 绍兴联英汽车电子有限公司 | Instrument rechecking table |
| CN205809274U (en) * | 2016-04-19 | 2016-12-14 | 国家电网公司 | Grounding electric resistance meter detecting device |
-
2016
- 2016-04-19 CN CN201610243677.7A patent/CN105785303A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921853Y (en) * | 2006-07-03 | 2007-07-11 | 内蒙古自治区电力科学研究院 | Improved grounding electric resistance meter detecting device |
| CN201477160U (en) * | 2009-08-24 | 2010-05-19 | 华北电力科学研究院有限责任公司 | Automatic resistance box checking system |
| CN201886142U (en) * | 2010-12-14 | 2011-06-29 | 江西东华计量测试研究所 | Intelligent calibrating device for earth resistance meter |
| CN201974517U (en) * | 2011-01-27 | 2011-09-14 | 上海共联通信信息发展有限公司 | Metering detection device for earth resistance testers |
| CN102298132A (en) * | 2011-05-26 | 2011-12-28 | 福建省计量科学研究院 | Calibrating device of grounding conduction resistance tester |
| CN202582589U (en) * | 2012-05-09 | 2012-12-05 | 绍兴联英汽车电子有限公司 | Instrument rechecking table |
| CN205809274U (en) * | 2016-04-19 | 2016-12-14 | 国家电网公司 | Grounding electric resistance meter detecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443547A (en) * | 2016-10-20 | 2017-02-22 | 国家电网公司 | Intelligent insulated earth resistance meter calibrating device |
| CN108710096A (en) * | 2018-08-22 | 2018-10-26 | 深圳德晋科技有限公司 | Earth-continuity tester calibrating installation |
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Application publication date: 20160720 |