CN106680611A - ESD grounding tester used for electronic manufacture workshops - Google Patents
ESD grounding tester used for electronic manufacture workshops Download PDFInfo
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- CN106680611A CN106680611A CN201510760754.1A CN201510760754A CN106680611A CN 106680611 A CN106680611 A CN 106680611A CN 201510760754 A CN201510760754 A CN 201510760754A CN 106680611 A CN106680611 A CN 106680611A
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- resistance
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- grounding
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Abstract
The invention discloses an ESD grounding tester used for electronic manufacture workshops. The ESD grounding tester includes a resistance meter used for measuring resistance between current to-be-measured points and a grounding wire and outputting alarm signals to a PLC controller when detecting that the resistance between a specific to-be-measured point and the grounding wire is greater than a preset threshold value; a DC counter used for displaying serial numbers of the to-be-measured points; a DC alarm indicator lamp used for output alarm; a fuser used for realizing power-off protection of a switch power source; the switch power source used for supplying power for other parts; a PLC controller connected with the resistance meter, the DC counter, the alarm lamp and the fuser separately. The PLC controller performs circular resistance detection on the to-be-measured points at a preset time interval. After the PLC controller receives the alarm signals sent by the resistance meter, the ESD grounding tester stops resistance detection and starts the alarm lamp for alarming. The PLC controller resets the DC counter after detecting the grounding point with problems. According to the invention, testing positions can be set flexibly, circular testing can be realized and timely alarm output is achieved.
Description
Technical field
The present invention relates to automobile manufacturing field, more particularly to a kind of ESD grounding test instruments for electronic manufacture workshop.
Background technology
Electrostatic is a kind of objective natural phenomena, and the mode of generation is various, such as contact, friction, appliance chamber sensing.It is quiet
The characteristics of electric the characteristics of is long-time accumulation, high voltage, low battery, small current and short action time.Electrostatic is in multiple necks
Cause serious harm in domain.Triboelectrification and static electricity on human body are two big harm in electronics industry, often result in electronic apparatus product
Product fluctuation of service, or even damage.ESD be 20th century mid-term since formed with study electrostatic generation, harm and it is quiet
The subject of electricity protection etc., is accustomed to that ESD will be referred to as the equipment of electrostatic defending in the world.
In electronic equipment/product manufacturing workshop, substantial amounts of electronic equipment/electronic production equipment due to centralized arrangement, ESD
Protection becomes more important.Existing ESD protections adopts mode derived from direct dead earth, but this mode to exist very
Many drawbacks, such as：Situations such as generation ground wire is damaged, ESD cannot derive the equipment damage for causing.And, it is not provided with
The derived equipment of ESD ground connection is due to the potential safety hazard of the ESD produced by long time integration.Therefore, it is badly in need of a kind of energy flexibly
Test position is set, detection is circulated, the ESD grounding test instruments that in time output is reported to the police.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind and can flexibly arrange test position for electronic manufacture workshop, carries out
Cycle detection, the ESD grounding test instruments that in time output is reported to the police, including：PLC, ohmmeter, DC electronic countings
Device, DC alarm lamps, fuse and Switching Power Supply；
Ohmmeter, for measuring the resistance between current measured point and ground wire, when detect certain measured point and ground wire it
Between resistance value more than predetermined threshold value output alarm signal to PLC；
DC counters, for showing the numbering of measured point；
DC alarm lamps, report to the police for exporting；
Fuse, for Switching Power Supply power-off protection is realized；
Switching Power Supply, for powering to other each parts；
PLC, connects respectively ohmmeter, DC counters, DC alarm lamps and fuse；
PLC is circulated resistance detection according to preset duration to each measured point, and PLC receives ohmmeter
Then ESD grounding test instruments stop resistance detection and start DC alarm lamps the alarm signal for sending；PLC is in inspection
Measure DC counters are resetted after problem with grounding point, restart the tested dot cycle resistance detection of a new round.
Wherein, PLC be relay output type, such as Mitsubishi FX1N-40MR.
Wherein, preset duration is 2 seconds, 3 seconds, 4 seconds or 5 seconds, and preferably resistance monitor detects resistance in 2 seconds
Less than threshold values, judge that ESD is qualified, otherwise ESD imperfect earths, there is potential safety hazard.
Wherein, resistance value predetermined threshold value is 1 ohm.
The present invention can flexibly arrange according to demand test position (PLC is arranged on demand), can be in electronic manufacture workshop
Equipment/measured point carry out real-time circulation detection, instant playback equipment/measured point ESD ground connection situations, show by equipment/
The grounding resistance of measured point.The output at once if grounding resistance too high (more than 1 ohm) is detected is reported to the police, it is to avoid ESD
Potential safety hazard.
Description of the drawings
Below in conjunction with the accompanying drawings the present invention is further detailed explanation with specific embodiment：
Fig. 1 the structural representation of present invention one.
Fig. 2 is schematic structural view of the invention two
Specific embodiment
One kind can flexibly arrange test position for electronic manufacture workshop, be circulated detection, the ESD that in time output is reported to the police
Grounding test instrument, including：PLC, ohmmeter, DC electronic counters, DC alarm lamps, fuse and open
Powered-down source；
Ohmmeter, for measuring the resistance between current measured point and ground wire, when detect certain measured point and ground wire it
Between resistance value more than predetermined threshold value output alarm signal to PLC；
DC counters, for showing the numbering of measured point；DC alarm lamps, report to the police for exporting；
Fuse, for Switching Power Supply power-off protection is realized；
Switching Power Supply, for powering to other each parts；
PLC, connects respectively ohmmeter, DC counters, DC alarm lamps and fuse；
PLC is circulated resistance detection according to preset duration to each measured point, and PLC receives ohmmeter
Then ESD grounding test instruments stop resistance detection and start the warning of DC alarm lamps the alarm signal for sending；PLC
DC counters are resetted after problem with grounding point is detected, restarts the tested dot cycle resistance detection of a new round.
Wherein, PLC is Mitsubishi FX1N-40MR, and preset duration is 2 seconds, 3 seconds, 4 seconds or 5 seconds, is preferably existed
Resistance monitor detects resistance less than threshold values in 2 seconds, judges that ESD is qualified, otherwise ESD imperfect earths.
Working condition of the present invention：
As described in Figure 2, the ground wire PE of power supply, another termination are accessed in ohmmeter test lead one end of ESD grounding test instruments
Enter the common point COM3～COM5 of PLC institute test zone Y4～Y15 outputs, the test point of ESD grounding test instruments is (i.e.
PLC output points are connected with equipment shell).When PLC surveys region output, this output point Y and common point COM connects
Logical, ohmmeter does resistance and contrasts and shows and currently survey resistance.
Electricity on ESD grounding test instruments, PLC is resetted to DC counter reset signal Y1, PLC inspection
Measuring resistance table it is no ground it is bad after start to export count signal Y0 and give DC counters, DC counters show 1, and (1 represents the
One equipment), PLC output detection signal detection Y4 regions, as resistance that Y4 is tested does not surpass in preset duration
Given threshold is crossed, then exports detection signal detection Y5 regions (detection next device), synchronism output count signal Y2
To counter, counter shows 2 (2 represent second equipment), if measuring Y5 regions resistance more than given threshold, electricity
Table output alarm signal X0 is to PLC for resistance, and PLC exports enabling signal Y2 to alarm lamp, alarm lamp report
It is alert.In personnel inspection ground wire, after excluding earth fault, ESD grounding test instruments rerun test.
PLC export to last equipment Y15 ohmmeter survey resistance none more than resistance threshold i.e. without X0
Signal input, PLC will export reset signal Y1 by DC counter resets, detect that (DC is counted in Y4 regions again
Number device shows 1, i.e. First equipment), it is circulated test.
The present invention has been described in detail above by specific embodiment and embodiment, but these are not constituted to this
The restriction of invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Enter, these also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of ESD grounding test instruments for electronic manufacture workshop, it is characterised in that include：PLC, electricity
Resistance table, DC electronic counters, DC alarm lamps, fuse and Switching Power Supply；
Ohmmeter, for measuring the resistance between current measured point and ground wire, when detect certain measured point and ground wire it
Between resistance value more than predetermined threshold value output alarm signal to PLC；
DC counters, for showing the numbering of measured point；
DC alarm lamps, report to the police for exporting；
Fuse, for Switching Power Supply power-off protection is realized；
Switching Power Supply, for powering to other each parts；
PLC, connects respectively ohmmeter, DC counters, DC alarm lamps and fuse；
PLC is circulated resistance detection according to preset duration to each measured point, and PLC receives ohmmeter
Then ESD grounding test instruments stop resistance detection and start the warning of DC alarm lamps the alarm signal for sending；PLC
DC counters are resetted after problem with grounding point is detected, restarts the tested dot cycle resistance detection of a new round.
2. ESD grounding test instruments as claimed in claim 1, it is characterised in that：PLC is relay output type.
3. ESD grounding test instruments as claimed in claim 1, it is characterised in that：Preset duration be 2 seconds, 3 seconds, 4
Second or 5 seconds.
4. ESD grounding test instruments as claimed in claim 1, it is characterised in that：Resistance value predetermined threshold value is 1 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760754.1A CN106680611A (en) | 2015-11-10 | 2015-11-10 | ESD grounding tester used for electronic manufacture workshops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760754.1A CN106680611A (en) | 2015-11-10 | 2015-11-10 | ESD grounding tester used for electronic manufacture workshops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680611A true CN106680611A (en) | 2017-05-17 |
Family
ID=58864407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510760754.1A Pending CN106680611A (en) | 2015-11-10 | 2015-11-10 | ESD grounding tester used for electronic manufacture workshops |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239644A (en) * | 2019-10-17 | 2020-06-05 | 武汉海尔热水器有限公司 | Grounding detection system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521623Y (en) * | 2001-12-06 | 2002-11-20 | 崔恩贵 | Multifunctional electrostatic conduction earthing resistance detecting instrument |
| CN2603400Y (en) * | 2003-01-28 | 2004-02-11 | 天津津安安全技术有限公司 | Automatic remote controller for electrostatic grounding |
| CN101435837A (en) * | 2008-12-15 | 2009-05-20 | 株洲天桥起重机股份有限公司 | Method and apparatus for detecting insulating resistance and releasing static electricity |
| CN102081119A (en) * | 2009-11-29 | 2011-06-01 | 新兴重工湖北三六一一机械有限公司 | Electrostatic grounding protection device for detecting grounding resistances |
| CN104678244A (en) * | 2015-01-27 | 2015-06-03 | 中国石油化工股份有限公司 | Anti-static ground connection alarming device |
| CN104678195A (en) * | 2013-11-26 | 2015-06-03 | 上海普锐马电子有限公司 | Electrostatic discharge detecting circuit |
-
2015
- 2015-11-10 CN CN201510760754.1A patent/CN106680611A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521623Y (en) * | 2001-12-06 | 2002-11-20 | 崔恩贵 | Multifunctional electrostatic conduction earthing resistance detecting instrument |
| CN2603400Y (en) * | 2003-01-28 | 2004-02-11 | 天津津安安全技术有限公司 | Automatic remote controller for electrostatic grounding |
| CN101435837A (en) * | 2008-12-15 | 2009-05-20 | 株洲天桥起重机股份有限公司 | Method and apparatus for detecting insulating resistance and releasing static electricity |
| CN102081119A (en) * | 2009-11-29 | 2011-06-01 | 新兴重工湖北三六一一机械有限公司 | Electrostatic grounding protection device for detecting grounding resistances |
| CN104678195A (en) * | 2013-11-26 | 2015-06-03 | 上海普锐马电子有限公司 | Electrostatic discharge detecting circuit |
| CN104678244A (en) * | 2015-01-27 | 2015-06-03 | 中国石油化工股份有限公司 | Anti-static ground connection alarming device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239644A (en) * | 2019-10-17 | 2020-06-05 | 武汉海尔热水器有限公司 | Grounding detection system and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |