CN104914315A - Resistance tester - Google Patents
Resistance tester Download PDFInfo
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- CN104914315A CN104914315A CN201510289709.2A CN201510289709A CN104914315A CN 104914315 A CN104914315 A CN 104914315A CN 201510289709 A CN201510289709 A CN 201510289709A CN 104914315 A CN104914315 A CN 104914315A
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- button
- resistance
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- splicing ear
- led screen
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Abstract
The invention belongs to the technical field of intelligent control, and particularly relates to a resistance tester comprising a shell, a battery and a motor which is connected with the battery. The resistance tester is characterized in that the motor is connected with a remote measuring instrument and a single-chip microcomputer. The single-chip microcomputer is respectively connected with an LED screen and an ad conversion module via a line, and an ammeter, a voltmeter, a temperature sensor and a humidity sensor are respectively connected with the ad conversion module via the line. The top end of the shell is provided with connecting terminals, and the connecting terminals are connected with each other via connecting sheets. The surface of the shell is provided with the LED screen, and the bottom end of the LED screen is provided with a measuring button, a multiplying power selection button, a zero returning button and a short circuit test button. The battery is arranged at one end of the bottom part of the shell. According to the tester, a crank handle does not need to be hand-cranked in the resistance measuring process, and the motor is controlled to crank the remote measuring instrument via the single-chip microcomputer so that time and labor consumed in onsite resistance measurement are saved and thus the resistance tester is suitable for popularization and application.
Description
Technical field
The present invention relates to a kind of resistance meter, be specially one and automatically control earth resistance tester, belong to field of intelligent control technology.
Background technology
In the last few years; domestic many places transformer station is because of thunderbolt formation expansion accident; most defective relevant with ground network ground resistance; grounded screen plays a part working earthing and protective ground; when stake resistance is excessive, make when there is earth fault neutral point voltage offset increase may make sound mutually and neutral point voltage too high, exceed the level of insulating requirements and cause device damage.When being struck by lightning or lightning wave attacks; because electric current is very large; very high residual voltage can be produced; neighbouring equipment is made to be subjected to the threat of strikeing back; and reduce the lightning withstand level of the proterctive equipment of grounded screen (overhead transmission line and Substation Electric Equipment) energized conductor own, do not reach the requirement of design and damage equipment.Whether the stake resistance of earthed system is qualified is simultaneously directly connected to substation operation personnel, substation equipment maintenance and repair personnel personal safety; But because soil has corrosive attack to earthing device, along with the lengthening of working time, earthing device can be corroded, and affects the safe operation of transformer station; Therefore, be very important to the periodic monitoring of ground network ground resistance.
In prior art, earth resistance tester test resistance, first will carry out short-circuit test, after machine zero, swagger handle slowly, adjust index dial simultaneously, and galvanometer pointer right avertence makes index dial counter-clockwise direction rotate, pointer left avertence, index dial clockwise direction is rotated, that pointer resets, when pointer is close to baseline, megger speed should be accelerated and reach 120 turns per minute, and carefully adjust index dial, pointer is made to aim at baseline, short-circuit test is normal, concrete remote measurement process is identical with short-circuit test, the result distinguishing just remote measurement is no longer zero, but scale points to some occurrences, this shows, need in resistance test process constantly to shake crank, often to test a lot of point at the scene, the time and efforts of such meeting at substantial, a lot of inconvenience is brought to work on the spot.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of Electronic control remote measurement ground meter, adopts Electric Machine Control shake crank, thus solve existing tester and repeatedly need shake the problem that crank carries out resistance measurement.
For achieving the above object, the invention provides following technical scheme: a kind of resistance meter, the motor comprising shell, battery and be connected with described battery; It is characterized in that, described motor connects telegauge and single-chip microcomputer, described single-chip microcomputer is connected with LED screen and ad modular converter respectively by circuit, and reometer, voltage table, temperature sensor are connected with described ad modular converter by circuit respectively with humidity sensor;
Described housing top end is provided with splicing ear, and connected by brace between described splicing ear, described case surface is provided with described LED screen, and described LED screen bottom is provided with measurement button, multiplying power select button, zero button and short-circuit test button, described battery is arranged on one end of described outer casing bottom.
Further, described LED screen surface is provided with resistance value display screen, temperature display, humidity display screen and date display screen.
Further, described splicing ear has four, is respectively C1, P1, P2, C2, and P2 with C2 is connected by described brace.
Compared with prior art, the invention has the beneficial effects as follows:
1), click and measure button and just can instead of the process of hand shaken crank measuring resistance by drive motor, saved time and manpower that in-site measurement resistance expends;
2), directly in every data of touch-screen display measurement point, can avoid in environment noisy at the scene the problem recording data and easily make mistakes, the time of having saved improves the degree of accuracy of numerical value;
3), measured after, deletion to current test data and preservation work can be carried out, the interpretation of records datamation after being convenient to by button click.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is resistance meter structural representation of the present invention;
Fig. 2 is resistance meter module diagram of the present invention;
In figure: 1, shell; 2, splicing ear; 3, brace; 4, LED screen; 5, button is measured; 6, multiplying power select button; 7, make zero button; 8, short-circuit test button; 9, battery; 10, resistance value display screen; 11, temperature display; 12, humidity display screen; 13, date display screen; 14, single-chip microcomputer; 15, motor; 16, telegauge; 17, ad modular converter; 18, temperature sensor; 19, humidity sensor; 20, voltage table; 21, reometer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention; technical scheme in the embodiment of the present invention is clearly and completely described; obviously; described embodiment is only the present invention's part embodiment; instead of whole embodiments; based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-2, the invention provides a kind of technical scheme: resistance meter, comprise shell 1, LED screen 4 and single-chip microcomputer 14; Shell 1 top has four splicing ears 2 to be C1, P1, P2, C2 respectively, be brace 3 below splicing ear, the first half of shell 1 is LED screen 4, and it is measure button 5 respectively that the latter half is equipped with four buttons, multiplying power select button 6, zero button 7, short-circuit test button 8; Shell bottom is battery 9.
LED screen 4 can show every numerical value of test resistance, comprises resistance value, temperature, humidity, date etc.; ; LED screen 4 is connected with single-chip microcomputer 14, transmits data by input/output port, and single-chip microcomputer 14 is connected with motor 15, ad modular converter 17, and single-chip microcomputer 14 controls motor 15 and rotates, and driven by motor telegauge 16 rotates; Described ad modular converter 17 is connected with temperature sensor 18, humidity sensor 19, reometer 21 and voltage table 20, and motor 15 is powered by battery 9.
Concrete principle and use-pattern: the present invention is a kind of resistance meter.During use, first four terminals of connecting wires are received on measurement point, twisting multiplying power select button 6 selects resistance multiplying power, clicking zero button 7 makes screen display test value be zero, then short-circuit test button 8 is clicked, check whether resistance value shows null value, illustrate that short-circuit test is passed through as shown null value, at this time click measurement button 5 and just can pass through single-chip microcomputer 14 actuating motor 15, shake telegauge 16, ad modular converter 17 is by temperature sensor 18 simultaneously, humidity sensor 19, the analogue value measured of reometer 21 and voltage table 20 is converted to digital value, pass to single-chip microcomputer 14, these data are processed through single-chip microcomputer 14, obtain resistance value, temperature, the data such as humidity are also presented in LED screen 4, at the end of measurement, whether LED screen 4 can show preserves this test result.
Last it is noted that the foregoing is only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to previous embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a resistance meter, the motor (15) comprising shell (1), battery (9) and be connected with described battery (9); It is characterized in that, described motor (15) connects telegauge (16) and single-chip microcomputer (14), described single-chip microcomputer (14) is connected with LED screen (4) and ad modular converter (17) respectively by circuit, and reometer (21), voltage table (20), temperature sensor (18) are connected with described ad modular converter (17) by circuit respectively with humidity sensor (19);
Described shell (1) top is provided with splicing ear (2), and connected by brace (3) between described splicing ear (2), described shell (1) surface is provided with described LED screen (4).
2. a kind of resistance meter according to claim 1, is characterized in that: described LED screen (4) surface is provided with resistance value display screen (10), temperature display (11), humidity display screen (12) and date display screen (13).
3. a kind of resistance meter according to claim 1, is characterized in that: described splicing ear (2) has four, is respectively splicing ear C1, splicing ear P1, splicing ear P2, splicing ear C2.
4. a kind of resistance meter according to claim 3, is characterized in that: above-mentioned splicing ear P2 is connected by described brace (3) with splicing ear C2.
5. a kind of resistance meter according to claim 3, is characterized in that: described battery (9) is arranged on one end of described shell (1) bottom.
6. a kind of resistance meter according to claim 5, is characterized in that: described LED screen (4) bottom is provided with measures button (5), by rate select button (6), zero button (7) and short-circuit test button (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289709.2A CN104914315A (en) | 2015-06-01 | 2015-06-01 | Resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289709.2A CN104914315A (en) | 2015-06-01 | 2015-06-01 | Resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104914315A true CN104914315A (en) | 2015-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289709.2A Pending CN104914315A (en) | 2015-06-01 | 2015-06-01 | Resistance tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN104914315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405250A (en) * | 2016-08-31 | 2017-02-15 | 山东电力工程咨询院有限公司 | High-density earth resistivity measurement system suitable for complex terrain conditions and high-density earth resistivity measurement method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852886U (en) * | 2010-11-19 | 2011-06-01 | 西安光谷通信技术有限公司 | Multifunctional earth resistance tester |
| CN201965184U (en) * | 2010-12-28 | 2011-09-07 | 西安亚能电气有限责任公司 | Split type grounding downlead conduction resistance test instrument |
| 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 |
| CN203259595U (en) * | 2013-03-20 | 2013-10-30 | 南昌工程学院 | Full-automatic digital megohmmeter |
| CN203759126U (en) * | 2014-03-27 | 2014-08-06 | 国网山东夏津县供电公司 | Remote-control wireless visual insulation resistance tester |
| CN204719138U (en) * | 2015-06-01 | 2015-10-21 | 苏州市华安普电力工程有限公司 | A kind of resistance meter |
-
2015
- 2015-06-01 CN CN201510289709.2A patent/CN104914315A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852886U (en) * | 2010-11-19 | 2011-06-01 | 西安光谷通信技术有限公司 | Multifunctional earth resistance tester |
| CN201965184U (en) * | 2010-12-28 | 2011-09-07 | 西安亚能电气有限责任公司 | Split type grounding downlead conduction resistance test instrument |
| 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 |
| CN203259595U (en) * | 2013-03-20 | 2013-10-30 | 南昌工程学院 | Full-automatic digital megohmmeter |
| CN203759126U (en) * | 2014-03-27 | 2014-08-06 | 国网山东夏津县供电公司 | Remote-control wireless visual insulation resistance tester |
| CN204719138U (en) * | 2015-06-01 | 2015-10-21 | 苏州市华安普电力工程有限公司 | A kind of resistance meter |
Non-Patent Citations (1)
| Title |
|---|
| 颜儒芬: "简述接地电阻测试仪", 《全国电网中性点接地方式与接地技术研讨会论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405250A (en) * | 2016-08-31 | 2017-02-15 | 山东电力工程咨询院有限公司 | High-density earth resistivity measurement system suitable for complex terrain conditions and high-density earth resistivity measurement method thereof |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150916 |