CN103018644A - Automatic SPD (surge protective device) lightning stroke current testing system - Google Patents
Automatic SPD (surge protective device) lightning stroke current testing system Download PDFInfo
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- CN103018644A CN103018644A CN2012105938616A CN201210593861A CN103018644A CN 103018644 A CN103018644 A CN 103018644A CN 2012105938616 A CN2012105938616 A CN 2012105938616A CN 201210593861 A CN201210593861 A CN 201210593861A CN 103018644 A CN103018644 A CN 103018644A
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Abstract
The invention discloses an automatic SPD (surge protective device) lightning stroke current testing system which is characterized by comprising a control panel and a test board. An industrial personal computer and a PLC (programmable logic controller) which is communicated with the industrial personal computer are mounted in a body of the control panel; the test board comprises a test board body, a transmission and an impulse current device, the transmission is mounted on the test board body, the impulse current device is mounted on the lower portion of the test board body, the transmission comprises a track, a driving mechanism and a conveyor belt connected with the driving mechanism, a workpiece to-be-tested area, a testing area and a workpiece fetching area are arranged on the surface of the test board body, and the track penetrates through the workpiece to-be-tested area, the testing area and the workpiece fetching area; and electromagnetic valves are arranged on the lower portion of the test board body, testing stations and testing mechanisms are arranged in the testing area, the testing stations are positioned above the track, and displacement sensors are arranged at the testing stations and are electrically connected with the PLC. Compared with the traditional testing system comprising a plurality of independent detecting devices, the automatic SPD lightning stroke current testing system has the advantages that the efficiency is improved by 150 times at least, one or two testing persons can complete testing operation, and accordingly the labor cost is greatly lowered.
Description
Technical field
What the present invention relates to is a kind of electric current thunderbolt automatization test system, is specifically related to a kind of automatization test system for the surge protector testing current.
Background technology
Thunder and lightning is International Electrotechnical Commission (IEC) definition " the greatly harm of information age ".Surge protector (hereinafter to be referred as SPD) is to use a kind of important shocking preventing technology extensive, that cost performance is the highest in electrical system and the electronic information, is the important means that protection Electrical and Electronic information equipment exempts from the thunderbolt damage.
In the production run of SPD traditional sense, its every lightning impulse current detects 8/20 μ s, 10/350 μ s, 1.2/50 μ s waveform and static parameter (pressure sensitive voltage Uv and leakage current Is) commonly used and measures and need to carry out respectively by independent equipment.There is following shortcoming in its test process:
(1) needs many different checkout equipments to carry out respectively the performance test of different parameters, have the shortcomings such as complex operation and testing efficiency are low; The parts such as every equipment of its test usefulness needs that all control is set, measures, discharges and recharges, ground connection, polarity conversion, floor area is large and equipment manufacturing cost is high.
(2) need different staff's operations because the function of checkout equipment is different, whole handling, the data acquisition of equipment and connect very inconvenient.
Need staff's man-handling of materials to next equipment operating after (3) thunder and lightning waveforms are completed, such SPD need to carry out multiple conversions between distinct device, and not only complex operation and testing efficiency are very low.
(4) when running into defective products, a certain detection operation just no longer transmits in process of production, the overall performance of reflection product that so just can not be authentic and valid, that is: the inspection do not measure the performance parameter of this SPD in this operation defective, whether other performance parameter is qualified, increased the difficulty of reprocessing, and repaired and need all to retest again after complete.
(5) when the checkout equipment of operation sheet platform independent, be generally artificial calculating reading out data, some equipment shows that data time is shorter, need at short notice correct reading out data of tester, easily cause error of omission, incorrect posting data, the people is for causing defective products, if the long-time mode that adopts artificial calculating reading out data easily can cause a large amount of wastes to enterprise.
It is high that the controlling of single device needs operating personnel to have high professional qualities, and technical ability is skilled, superb, need to be in addition oneself understanding and the judgement of the qualified data of product, particularly when critical data; There is certain measuring error in equipment itself simultaneously, the error stack that exists during with operating personnel's recognition data can produce considerable influence to the SPD qualification rate, can not judge effectively whether the performance of SPD meets the requirements, error rate is high, can not guarantee the performance of SPD product.
Summary of the invention
The object of the invention is to the problems referred to above of in the performance test process, existing for SPD, a kind of SPD electric current thunderbolt automatization test system is provided, this test macro is mainly used in realizing the performance test of two kinds of different batches SPD, and is simple to operate, testing efficiency is high, labour intensity is low.
Technical scheme of the present invention is:
A kind of SPD electric current thunderbolt automatization test system comprises control desk and test board, the PLC that industrial computer is installed in the control desk stage body and communicates with industrial computer; Test board comprises the test stage body, is installed in the dash current device of testing the gearing on the stage body and being installed in test board stage body bottom, gearing comprises track, driving mechanism and the travelling belt that is connected with driving mechanism, workpiece district to be measured, test section and pickup district are installed on the test board stage body surface, and track runs through workpiece district to be measured, test section and pickup district; The bottom of test board stage body is provided with solenoid valve, is provided with test station and mechanism for testing in the test section, and test station is positioned at the track top, and the test station place is provided with displacement transducer, and displacement transducer is electrically connected with PLC.
Preferably, driving mechanism comprises buncher, is arranged on the driving wheel of test stage body workpiece district to be measured inlet end and is arranged on the engaged wheel of testing stage body pickup district endpiece, buncher is connected with driving wheel by Timing Belt, driving wheel is connected with engaged wheel by the travelling belt that is used for the placement test piece, and travelling belt is positioned at track.
Preferably, workpiece is provided with the cylinder gate in the district to be measured, is equipped with on the cylinder gate to stop cylinder, stops that cylinder is electrically connected with PLC by solenoid valve, stops on the piston rod of cylinder separator is installed.
Preferably, the test section comprises the first test section and the second test section, be provided with test station, mechanism for testing and lifting in the first test section and the second test section and stop cylinder, test station is positioned at the top of track, and lifting stops that cylinder is electrically connected with PLC by solenoid valve.
Preferably, the mechanism for testing of the first test section is two groups of tested cylinder that are electrically connected with PLC by solenoid valve, and two groups of tested cylinder lay respectively at the both sides of test station, and is installed in test board stage body surface by fixing cushion block; The lifting of the first test section stops that cylinder is fixed on test board stage body bottom surface by fixed block.
Preferably, two groups of tested cylinder are parallel on the solenoid valve, and the electrode tip folder all is installed on the piston rod of every group of tested cylinder, clamp on the electrode tip folder test electrode head is installed, and the test electrode head is electrically connected with PLC by the dash current device; Tested cylinder is electrically connected with PLC by solenoid valve.
Preferably, the mechanism for testing of the second test section comprises fixed block and the electrode tip holder that is installed on the fixed block, fixed block is installed in test board stage body surface by fixed mechanism, and the test electrode head is installed on the electrode tip holder, and the test electrode head is electrically connected with PLC by the dash current device; The lifting of the second test section stops that cylinder is positioned at test board stage body bottom surface.
Preferably, the dash current device comprises impulse current generator and shunt, impulse current generator is connected with rectifier charging device and dash current adjusting component for impulse, rectifier charging device and impulse current generator are electrically connected with PLC respectively, and shunt and dash current adjusting component for impulse are connected with product to be tested by the test electrode head in the test section respectively; Shunt is connected with PLC by the measuring system that is arranged in the control desk; Be connected with voltage divider between PLC and the dash current adjusting component for impulse.
Preferably, the pickup district is provided with pick-off unit and pushing device, and pick-off unit is arranged on the test section endpiece, and pushing device is arranged on the travelling belt output terminal; Pick-off unit comprises column, is installed in the base on column top, slide block mechanism and active cylinder, slide block mechanism is installed on the base, active cylinder is installed on the slide block of slide block mechanism, be provided with mechanical arm on the piston rod of active cylinder, pick-off unit comprises that also the lifting that is installed in the travelling belt below stops cylinder; Pushing device comprises and is fixed on the lip-deep corniform upright column of test board stage body and is installed in push piece cylinder on the corniform upright column, and pushing device comprises that also the lifting that is installed in the travelling belt below stops cylinder.
Preferably, control desk stage body surface is provided with the display that is connected with industrial computer, and industrial computer also is connected with keyboard, mouse and oscillograph; Data acquisition and control module and relay also are installed in the control desk stage body, and data acquisition and control module is electrically connected with PLC, and solenoid valve is connected with PLC by relay; Data acquisition and control module comprises analog input acquisition module, simulation output control module and digital quantity I/O control module.
Preferably, the bottom of control desk and test board all is equipped with four wheels that can turn to.
Beneficial effect of the present invention is: (1) floor area of the present invention is little, long service life, lightning impulse current is detected five kinds of formal testings such as 8/20 μ s, 10/350 μ s, 1.2/50 μ s and static parameter (pressure sensitive voltage Uv and leakage current Is) commonly used to be integrated in one, can finish lightning impulse current 8/20 μ s, 10/350 μ s and 1.2/50 μ s waveform testing, possess simultaneously static parameter (pressure sensitive voltage Uv and leakage current Is) measurement function; And can export 100V/s tests the SPD product.(2) the present invention adopts industrial computer as host computer, and PLC moves by the PLC control cylinder as slave computer, and is freely switched between different wave by qigong control electrode head, realizes the continual continuous detecting of same SPD, until all waveform testing is complete; And can finish the automatic clamping product, automatically carry out lightning impulse test, autoscan information, automatically read waveform, automatic data processing, automatically preserve form etc.(3) the present invention finishes test process automatically by industrial computer and PLC control, test accurately, test duration is short, and 36 seconds times spent just can be finished the integrated testability of five kinds of waveforms of separate unit SPD, and all test datas all are recorded in the industrial computer and with different color differentiating certified products and defective products; Equipment can be pointed out when running into the detection defective products, simultaneously by the action of PLC control cylinder, by active cylinder control mechanical arm defective products is placed to individual region; When product detects when qualified, industrial computer also can be identified automatically, and the streamline by equipment self flow to next perform region, has improved testing efficiency, complete reflection True Data.(4) test with the checkout equipment of traditional many platform independent and compare, efficient improves more than 150 doubly, and one, two tester can finish test job, and cost of labor reduces greatly.(5) the present invention also can carry out the scanning of bar code or two-dimension code, also configurable two-dimension code spray printing and scanning system.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the planar structure principle schematic of Fig. 1 mode.
Fig. 3 is the schematic block diagram of control system among the present invention.
Fig. 4 is the schematic block diagram of dash current device among the present invention.
Embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of SPD electric current thunderbolt automatization test system, this system comprises control desk and test board, the PLC that industrial computer is installed in the control desk stage body and communicates with industrial computer; Test board comprises test stage body 1, is installed in the dash current device of testing the gearing on the stage body 1 and being installed in test board stage body bottom, gearing comprises track 2, driving mechanism and the travelling belt 3 that is connected with driving mechanism, workpiece district to be measured, test section and pickup district are installed on the test board stage body surface, and track 2 runs through workpiece district to be measured, test section and pickup district; The bottom of test board stage body is provided with solenoid valve, is provided with test station and mechanism for testing in the test section, and test station is positioned at track 2 tops of gearing, and the test station place is provided with displacement transducer, and displacement transducer is electrically connected with PLC.
In order to realize that travelling belt normally moves, above-mentioned driving mechanism comprises buncher 4, is arranged on the driving wheel of test stage body workpiece district to be measured inlet end and is arranged on the engaged wheel of testing stage body pickup district endpiece, buncher 4 is connected with driving wheel by Timing Belt, and driving wheel is connected with engaged wheel by travelling belt 3; Travelling belt 3 is positioned at track 2, is used for placing test piece, realizes the transportation of test piece.
When detecting, for test block separately and to be measured, workpiece is provided with cylinder gate 5 in the district to be measured, is equipped with on the cylinder gate 5 to stop cylinder 6 for fear of test block and test specimen to be measured, stop that cylinder 6 is electrically connected with PLC by solenoid valve, stop on the piston rod of cylinder 6 separator is installed.
In order to realize the performance test of product, above-mentioned test section comprises the first test section and the second test section, be provided with test station, mechanism for testing and lifting in the first test section and the second test section and stop cylinder, test station is positioned at the top of track 2, and lifting stops that cylinder is electrically connected with PLC by solenoid valve.Wherein, the first test section can be used for the performance test of the first product, and the second test section can be used for the performance test of the second product.
In order to realize the performance test of the first product, the mechanism for testing of the first test section is two groups of tested cylinder that are electrically connected with PLC by solenoid valve, and two groups of tested cylinder lay respectively at the both sides of test station, and is installed in test board stage body surface by fixing cushion block; The lifting of the first test section stops that cylinder 8 is fixed on test board stage body bottom surface by fixed block
Above-mentioned two groups of tested cylinder 7 are parallel on the solenoid valve, and the electrode tip folder all is installed on the piston rod of every group of tested cylinder, clamp on the electrode tip folder test electrode head is installed, and the test electrode head is electrically connected with PLC by the dash current device; Tested cylinder 7 is electrically connected with PLC by solenoid valve.
In order to realize the performance test of the second product, the mechanism for testing of the second test section comprises fixed block and the electrode tip holder that is installed on the fixed block, fixed block is installed in test board stage body surface by fixed mechanism, the test electrode head is installed on the electrode tip holder, and the test electrode head is electrically connected with PLC by the dash current device; The lifting of the second test section stops that cylinder 9 is positioned at test board stage body bottom surface.
In order to realize the performance test of product to be tested, above-mentioned dash current device comprises impulse current generator and shunt, impulse current generator is connected with rectifier charging device and dash current adjusting component for impulse, rectifier charging device and impulse current generator are electrically connected with PLC respectively, and shunt and dash current adjusting component for impulse are connected with product to be tested by the test electrode head in the test section respectively; Shunt is connected with PLC by the measuring system that is arranged in the control desk; Be connected with voltage divider between PLC and the dash current adjusting component for impulse.
For the ease of separating two kinds of SPD that profile is different, above-mentioned pickup district is provided with pick-off unit and pushing device, and pick-off unit is arranged on the test section endpiece, is used for gripping the first substandard product, pushing device is arranged on travelling belt 3 output terminals, is used for pushing the second substandard product; Pick-off unit comprises column, is installed in the base on column top, slide block mechanism and active cylinder 10, slide block mechanism is installed on the base, active cylinder 10 is installed on the slide block of slide block mechanism, be provided with mechanical arm on the piston rod of active cylinder 10, pick-off unit comprises that also the lifting that is installed in travelling belt 4 belows stops cylinder 11; Pushing device comprises and is fixed on the lip-deep corniform upright column of test board stage body and is installed in push piece cylinder 12 on the corniform upright column, and pushing device comprises that also the lifting that is installed in travelling belt 3 belows stops cylinder 13.
The SPD of test passes will be transported to the finished product district with travelling belt 3.
Control desk stage body surface is provided with the display that is connected with industrial computer, and industrial computer also is connected with keyboard, mouse and oscillograph; Data acquisition and control module and relay also are installed in the control desk stage body, and data acquisition and control module is electrically connected with PLC, and solenoid valve is connected with PLC by relay; Data acquisition and control module comprises analog input acquisition module, simulation output control module and digital quantity I/O control module.
For the ease of mobile console and test board, the bottom of above-mentioned control desk and test board all is equipped with four wheels that can turn to.
Principle of work: during work, the unlike signal that industrial computer detects by PLC collecting test district intrinsic displacement sensor and check point, the product batches that the automatic identification of PLC will be tested, and judge and use the first test section or the second test section to test, it is current that workpiece district to be measured stops that the cylinder activation power supply stops workpiece to continue, simultaneously, it is out of service that travelling belt obtains signal, the test section tested cylinder begins test, the work of PLC control dash current device is carried out rectification charging by rectifier charging device, automatically stops after reaching the charging setting value, after impulse current generator and the adjustment of dash current adjusting component for impulse, begin automatic discharging shock-testing product by electrode tip, calculate data by industrial computer simultaneously, and data transmission is extremely arrived PLC, judge whether product is qualified, if defective, workpiece walks to the pickup district, when the displacement transducer of corresponding product kind detects signal, with workpiece holding or be pushed to defective rest area, certified products will be let pass to the finished product district in succession by travelling belt by cylinder action.
The relevant technologies content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Need to prove, those skilled in the art can also make such or such easy variation pattern under the instruction of this instructions, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should be within protection scope of the present invention.
Claims (10)
1. a SPD electric current thunderbolt automatization test system is characterized in that: comprise control desk and test board, the PLC that industrial computer is installed in the control desk stage body and communicates with industrial computer; Test board comprises the test stage body, is installed in the dash current device of testing the gearing on the stage body and being installed in test board stage body bottom, gearing comprises track, driving mechanism and the travelling belt that is connected with driving mechanism, workpiece district to be measured, test section and pickup district are installed on the test board stage body surface, and track runs through workpiece district to be measured, test section and pickup district; The bottom of test board stage body is provided with solenoid valve, is provided with test station and mechanism for testing in the test section, and test station is positioned at the track top, and the test station place is provided with displacement transducer, and displacement transducer is electrically connected with PLC.
2. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described driving mechanism comprises buncher, is arranged on the driving wheel of test stage body workpiece district to be measured inlet end and is arranged on the engaged wheel of testing stage body pickup district endpiece, buncher is connected with driving wheel by Timing Belt, driving wheel is connected with engaged wheel by the travelling belt that is used for the placement test piece, and travelling belt is positioned at track.
3. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described workpiece is provided with the cylinder gate in the district to be measured, be equipped with on the cylinder gate and stop cylinder, stop that cylinder is electrically connected with PLC by solenoid valve, stop on the piston rod of cylinder separator is installed.
4. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described test section comprises the first test section and the second test section, be provided with test station, mechanism for testing and lifting in the first test section and the second test section and stop cylinder, test station is positioned at the top of track, and lifting stops that cylinder is electrically connected with PLC by solenoid valve.
5. a kind of SPD electric current thunderbolt automatization test system according to claim 4, it is characterized in that: the mechanism for testing of described the first test section is two groups of tested cylinder that are electrically connected with PLC by solenoid valve, two groups of tested cylinder lay respectively at the both sides of test station, and are installed in test board stage body surface by fixing cushion block; The lifting of the first test section stops that cylinder is fixed on test board stage body bottom surface by fixed block.
6. a kind of SPD electric current thunderbolt automatization test system according to claim 5, it is characterized in that: described two groups of tested cylinder are parallel on the solenoid valve, the electrode tip folder all is installed on the piston rod of every group of tested cylinder, clamp on the electrode tip folder test electrode head is installed, the test electrode head is electrically connected with PLC by the dash current device; Tested cylinder is electrically connected with PLC by solenoid valve.
7. a kind of SPD electric current thunderbolt automatization test system according to claim 4, it is characterized in that: the mechanism for testing of described the second test section comprises fixed block and the electrode tip holder that is installed on the fixed block, fixed block is installed in test board stage body surface by fixed mechanism, the test electrode head is installed on the electrode tip holder, and the test electrode head is electrically connected with PLC by the dash current device; The lifting of the second test section stops that cylinder is positioned at test board stage body bottom surface.
8. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described dash current device comprises impulse current generator and shunt, impulse current generator is connected with rectifier charging device and dash current adjusting component for impulse, rectifier charging device and impulse current generator are electrically connected with PLC respectively, and shunt and dash current adjusting component for impulse are connected with product to be tested by the test electrode head in the test section respectively; Shunt is connected with PLC by the measuring system that is arranged in the control desk; Be connected with voltage divider between PLC and the dash current adjusting component for impulse.
9. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described pickup district is provided with pick-off unit and pushing device, and pick-off unit is arranged on the test section endpiece, and pushing device is arranged on the travelling belt output terminal; Pick-off unit comprises column, is installed in the base on column top, slide block mechanism and active cylinder, slide block mechanism is installed on the base, active cylinder is installed on the slide block of slide block mechanism, be provided with mechanical arm on the piston rod of active cylinder, pick-off unit comprises that also the lifting that is installed in the travelling belt below stops cylinder; Pushing device comprises and is fixed on the lip-deep corniform upright column of test board stage body and is installed in push piece cylinder on the corniform upright column, and pushing device comprises that also the lifting that is installed in the travelling belt below stops cylinder.
10. a kind of SPD electric current thunderbolt automatization test system according to claim 1, it is characterized in that: described control desk stage body surface is provided with the display that is connected with industrial computer, and industrial computer also is connected with keyboard, mouse and oscillograph; Data acquisition and control module and relay also are installed in the control desk stage body, and data acquisition and control module is electrically connected with PLC, and solenoid valve is connected with PLC by relay; Data acquisition and control module comprises analog input acquisition module, simulation output control module and digital quantity I/O control module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593861.6A CN103018644B (en) | 2012-12-29 | 2012-12-29 | Automatic SPD (surge protective device) lightning stroke current testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593861.6A CN103018644B (en) | 2012-12-29 | 2012-12-29 | Automatic SPD (surge protective device) lightning stroke current testing system |
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| CN103018644A true CN103018644A (en) | 2013-04-03 |
| CN103018644B CN103018644B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210593861.6A Expired - Fee Related CN103018644B (en) | 2012-12-29 | 2012-12-29 | Automatic SPD (surge protective device) lightning stroke current testing system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103457486A (en) * | 2013-09-09 | 2013-12-18 | 青岛纳川电气科技有限公司 | Voltage-regulating current-regulating direct-current power supply with lightning-stroke-prevention and surging-prevention functions |
| CN105527513A (en) * | 2015-11-30 | 2016-04-27 | 合保电气（芜湖）有限公司 | Electrical performance detector for lightning arrester |
| CN105548737A (en) * | 2015-11-30 | 2016-05-04 | 合保电气（芜湖）有限公司 | Aging test device of arrester |
| CN104020322B (en) * | 2014-06-12 | 2017-02-15 | 山东大学 | Manual lightning stroke simulating test fixture made of fiber reinforced composite material, and method |
| CN107421571A (en) * | 2017-08-03 | 2017-12-01 | 合肥念萍电子商务有限公司 | Test bench for electronic appliance |
| CN107621583A (en) * | 2017-09-18 | 2018-01-23 | 苏州立源信智能科技有限公司 | A kind of Automated electronic product tester |
| CN108776240A (en) * | 2018-06-22 | 2018-11-09 | 湖北泰和电气有限公司 | A kind of detector of lightning arrester |
| CN109164301A (en) * | 2018-10-26 | 2019-01-08 | 惠州市新泓威科技有限公司 | Automatic resistance value detection device and detection method of electronic cigarette atomizer |
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| CN103457486A (en) * | 2013-09-09 | 2013-12-18 | 青岛纳川电气科技有限公司 | Voltage-regulating current-regulating direct-current power supply with lightning-stroke-prevention and surging-prevention functions |
| CN104020322B (en) * | 2014-06-12 | 2017-02-15 | 山东大学 | Manual lightning stroke simulating test fixture made of fiber reinforced composite material, and method |
| CN105527513A (en) * | 2015-11-30 | 2016-04-27 | 合保电气（芜湖）有限公司 | Electrical performance detector for lightning arrester |
| CN105548737A (en) * | 2015-11-30 | 2016-05-04 | 合保电气（芜湖）有限公司 | Aging test device of arrester |
| CN107421571A (en) * | 2017-08-03 | 2017-12-01 | 合肥念萍电子商务有限公司 | Test bench for electronic appliance |
| CN107621583A (en) * | 2017-09-18 | 2018-01-23 | 苏州立源信智能科技有限公司 | A kind of Automated electronic product tester |
| CN108776240A (en) * | 2018-06-22 | 2018-11-09 | 湖北泰和电气有限公司 | A kind of detector of lightning arrester |
| CN109164301A (en) * | 2018-10-26 | 2019-01-08 | 惠州市新泓威科技有限公司 | Automatic resistance value detection device and detection method of electronic cigarette atomizer |
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| CN103018644B (en) | 2014-12-17 |
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