CN102466767A - Dual-jaw ground resistance tester - Google Patents
Dual-jaw ground resistance tester Download PDFInfo
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- CN102466767A CN102466767A CN201010551246XA CN201010551246A CN102466767A CN 102466767 A CN102466767 A CN 102466767A CN 201010551246X A CN201010551246X A CN 201010551246XA CN 201010551246 A CN201010551246 A CN 201010551246A CN 102466767 A CN102466767 A CN 102466767A
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- jaw
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- chip microcomputer
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- ground resistance
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Abstract
The invention belongs to the field of resistance testing devices and particularly relates to a dual-jaw ground resistance tester. In a method for testing ground resistance by knocking an auxiliary electrode in the prior art, the auxiliary electrode needs to be knocked, and a grounding body needs to be isolated from equipment. In order to overcome the defects in the prior art, a technical scheme adopted in the invention is as follows: the dual-jaw earth resistance tester comprises a single-chip microcomputer, an A/D (Analog/Digital) conversion module, a power supply module, a flash memory module, a display module and a communication port and is characterized in that the single-chip microcomputer is respectively connected with the A/D conversion module, the power supply module, the flash memory module, the display module and the communication port, and the A/D conversion module is respectively connected with a current clamp, a voltage clamp and a H\S\E\EH interface. The dual-jaw ground resistance tester disclosed by the invention meets the requirements of ground resistance tests under various conditions, and has the advantages of simplicity for operation, convenience in use, large range, wide measuring range and good shock resistance.
Description
Technical field
The invention belongs to resistance test device field, relate in particular to a kind of pair of jaw earth resistance tester.
Background technology
For the ground connection of testing various device and building thing is built the stake resistance of device, and measure soil resistivity and earthed system Leakage Current under the various conditions, generally use tradition to beat the method for auxiliary earth polar survey stake resistance.Can the achieve a butt joint test of earth resistance of the method, still, classic method need be beaten auxiliary earth polar, and must grounding body and equipment be isolated.Therefore said method has certain requirement and can't realize on-line measurement measuring condition.
Summary of the invention
In order to overcome defective of the prior art, but the purpose of this invention is to provide a kind of two jaw earth resistance testers of playing auxiliary pile on-line measurement, having the intelligent test function of need not.
To achieve these goals, the technical scheme taked of the present invention is:
A kind of pair of jaw earth resistance tester; Comprise: single-chip microcomputer, A/D modular converter, power module, flash memory module, display module and PORT COM; It is characterized in that: said single-chip microcomputer is connected with A/D modular converter, power module, flash memory module, display module and PORT COM respectively, said A/D modular converter connect respectively current clamp, voltage clamp and S interface.
The model of above-mentioned single-chip microcomputer is: 894196.
A kind of test implementation method of utilizing above-mentioned two jaw earth resistance testers may further comprise the steps:
1) beginning,
2) single-chip microcomputer initialization,
3) key scan,
4) two, three, the four-wire method grounding resistance measurement, if, operating measurement program then, if otherwise get into next step,
5) ac voltage measurement, if, operating measurement program then, if otherwise get into next step,
6) soil resistivity is measured, if operating measurement program then is if otherwise returned for the 4th step.
With respect to prior art, advantage of the present invention is:
(1) adopts split-core type meter formula measuring method, need not to beat auxiliary pile, adapt to the needs of earth resistance under the various conditions.
(2) but on-line measurement need not grounding body and equipment are isolated.
(3) advanced technology has the intelligent test function.
(4) can under the condition of not breaking off earthed system, test the Leakage Current real effective.
(5) have self-calibration function, avoid the resistance of contact resistance and line, the influence that test result is caused.
(6) accuracy problem that precision is high, error is little, solved small resistance measurement.
(7) measurement function conversion adopts electronic switch to switch to improve system reliability.
(8) carry out communication with upper PC, the realization measurement data is uploaded, and is convenient to preserve and prints.
(9) big, the wide-range of simple to operate, easy to use, scope, have backlight illuminating system.
(10) plastic cement sheath, shock resistance is good.
Description of drawings
Fig. 1 circuit theory wiring diagram,
Fig. 2 program flow diagram,
Fig. 3 is a circuit connection diagram of the present invention.
Embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is further specified.
Referring to Fig. 1; A kind of pair of jaw earth resistance tester; Comprise: single-chip microcomputer, A/D modular converter, power module, flash memory module, display module and PORT COM; It is characterized in that: said single-chip microcomputer is connected with A/D modular converter, power module, flash memory module, display module and PORT COM respectively, said A/D modular converter connect respectively current clamp, voltage clamp and S interface.
The model of said single-chip microcomputer is: 894196.
Referring to Fig. 2, utilize the test implementation method of claim 1 or 2 described pairs of jaw earth resistance testers, it is characterized in that: may further comprise the steps:
1) beginning,
2) single-chip microcomputer initialization,
3) key scan,
4) two, three, the four-wire method grounding resistance measurement, if, operating measurement program then, if otherwise get into next step,
5) ac voltage measurement, if, operating measurement program then, if otherwise get into next step,
6) soil resistivity is measured, if operating measurement program then is if otherwise returned for the 4th step.
Claims (3)
1. two jaw earth resistance tester; Comprise: single-chip microcomputer, A/D modular converter, power module, flash memory module, display module and PORT COM; It is characterized in that: said single-chip microcomputer is connected with A/D modular converter, power module, flash memory module, display module and PORT COM respectively, said A/D modular converter connect respectively current clamp, voltage clamp and S interface.
2. according to said pair of jaw earth resistance tester of claim 1, it is characterized in that: the model of said single-chip microcomputer is: 894196.
3. test implementation method of utilizing claim 1 or 2 described pairs of jaw earth resistance testers is characterized in that: may further comprise the steps:
1) beginning,
2) single-chip microcomputer initialization,
3) key scan,
4) two, three, the four-wire method grounding resistance measurement, if, operating measurement program then, if otherwise get into next step,
5) ac voltage measurement, if, operating measurement program then, if otherwise get into next step,
6) soil resistivity is measured, if operating measurement program then is if otherwise returned for the 4th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010551246XA CN102466767A (en) | 2010-11-19 | 2010-11-19 | Dual-jaw ground resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010551246XA CN102466767A (en) | 2010-11-19 | 2010-11-19 | Dual-jaw ground resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102466767A true CN102466767A (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010551246XA Pending CN102466767A (en) | 2010-11-19 | 2010-11-19 | Dual-jaw ground resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102466767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866301A (en) * | 2012-09-18 | 2013-01-09 | 深圳远征技术有限公司 | Grounding resistance analyzing device and grounding resistance analyzing method |
-
2010
- 2010-11-19 CN CN201010551246XA patent/CN102466767A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866301A (en) * | 2012-09-18 | 2013-01-09 | 深圳远征技术有限公司 | Grounding resistance analyzing device and grounding resistance analyzing method |
| CN102866301B (en) * | 2012-09-18 | 2016-12-07 | 深圳远征技术有限公司 | A kind of earth resistance analytical equipment and the analysis method of earth resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |