CN202093102U

CN202093102U - Lightning surge generator

Info

Publication number: CN202093102U
Application number: CN201120073500XU
Authority: CN
Inventors: 季军; 潘建根; 涂辛雅; 胡月霞
Original assignee: HANGZHOU EVERFINE INSTRUMENT CO Ltd
Current assignee: HANGZHOU EVERFINE INSTRUMENT CO Ltd
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2011-12-28
Anticipated expiration: 2021-03-18

Abstract

The utility model discloses a lightning surge generator, which comprises a control unit, a fast sampling circuit and a surge pulse formation unit. Generated surge pulses are directly exerted on a test terminal of tested equipment through the surge pulse formation unit or connected in coupling mode to the test terminal of the tested equipment through a coupling/ decoupling network. Meanwhile, the control unit controls the fast sampling circuit to synchronously collect voltage and current waveform data of the test terminal of the tested equipment. The lightning surge generator is capable of analyzing test data visually and speedily, achieves integration of testing and analyzing, is convenient to operate, and meanwhile greatly reduces equipment cost. Further, by means of intelligent design for the control unit, the lightning surge generator fast and accurately finds minimum breakdown voltage, automatically screens out products not meeting the standard, and greatly improves testing efficiency.

Description

A kind of lightning surge generator

[technical field]

The utility model belongs to electromagnetic compatibility (EMC) field tests, especially to being subjected to the research test of examination equipment (EUT) antisurge impact capacity.

[background technology]

Electronics and electrical equipment are in use, because the surge of generations such as facility switching, static discharge, fault, thunderbolt can cause certain infringement to electronic equipment, wherein be struck by lightning to the destructiveness of electronic equipment for maximum, so the anti-lightning surge ability of test electronic is a key factor of its properties of product of assessment.Standard GB/T 17626.5:2008 and international standard IEC 61000-4-5:2005 have made strict regulations to the test of test electronic antisurge impact capacity, and comprising to testing equipment, surge voltage, current waveform etc. has all been done to explicitly call for.

At present, the major equipment of the anti-lightning surge ability of testing research electronic equipment is the lightning surge generator, generally also need be equipped with expensive voltage, current probe and oscillograph to realize analysis demonstration to surge voltage, current waveform, this array mode has not only increased the cost of testing apparatus, and complicated operation, security is low.In addition, the conventional method of lightning surge generator test electronic antisurge ability is the surge that electronic equipment is applied different brackets, tried the antisurge grade of equipment with test, this method test speed is slow, and can not accurately seek the voltage breakdown of electronic equipment, also may cause great destruction because the surge that applies is excessive.In addition, in the antisurge aptitude tests to electronic equipment on production line, how filtering out against regulation product fast also is present urgent problem.

[utility model content]

At above-mentioned the problems of the prior art, the utility model aims to provide a kind of lightning surge generator, can realize that test analysis is integrated, and can seek out minimum break-down voltage fast and accurately, filter out against regulation product, directly perceived quick, cost performance is high.

A kind of lightning surge generator described in the utility model, comprise high-voltage power supply, surge pulse forming unit, coupling/decoupling network, it is characterized in that, also comprise control module, quick sampling circuit, the synchronous triggering port, described high-voltage power supply output terminal is connected with described surge pulse forming unit input end, the surge pulse forming unit is applied directly to the surge pulse that produces or is coupled to by coupling/decoupling network and tried on the equipment test end, and control module is controlled the voltage and current Wave data that quick sampling circuit synchronous acquisition is tried the equipment test end.

Be applied to surge voltage, the circuit waveform data of being tried the equipment test end by quick sampling circuit synchronous acquisition, feed back to after the control module analyzing and processing can be directly LCD display by the lightning surge generator show, so not only simplified testing apparatus, improved security, also directly perceived more, quick to the analysis of Wave data.

Above-mentioned a kind of lightning surge generator, control module is analyzed the peak value of surge voltage, electric current according to the Wave data of gathering, and with the peak value of surge voltage, electric current with tried the limit value that the equipment antisurge impacts and compared differentiation, according to discrimination result output identification or execution signal, described identification or execution signal can be a kind of acousto-optic enabling signals, character display signal, or switching value control signal.Describedly tried the limit value that the equipment antisurge impacts and be provided with by the user, comprise maximum value and lowest limit, described discrimination result is whether surge voltage, current peak exceed the upper limit or be lower than the result of lower limit.

Tried the difference of equipment antisurge ability according to difference, the user can be provided with maximum value and the lowest limit that allowed by examination equipment.When being subjected to examination equipment abnormal conditions in process of the test, to occur, as open circuit or short circuit, the surge voltage that records, current peak will be excessive or too small, to such an extent as to exceed the upper limit or be lower than lower limit, identification of control module output this moment or carry out closure/disconnection that signal comes the gauge tap amount (or the demonstration of the startup of acousto-optic, character etc.) does not meet product to identify.By this automatic identification mode, can filter out the product that does not meet the surge regulation rapidly, can satisfy the requirement of product on production line quick test.

Above-mentioned a kind of lightning surge generator, control module control high-voltage power supply is boosted successively with a fixed step size, and the size of step-length is provided with by the user.Control module control high-voltage power supply increases successively, thereby having controlled the surge pulse also increases successively, can accurately find out in this way and be tried the equipment voltage breakdown, the concrete analysis electronic equipment is subjected to the process of surge impact, and by intelligent control, when identify be subjected to examination equipment to reach minimum break-down voltage after, stop automatically the test, can avoid being subjected to examination equipment to be subjected to excessive surge impact and to cause great destruction.

Above-mentioned a kind of lightning surge generator, the controlled unit controls of coupling/decoupling network, the switching of control module control coupling/decoupling network coupling path, control module is according to the switching of the coupling path control quick sampling circuit sampling point after switching simultaneously.So both satisfied the requirement of different coupling path tests, and guaranteed that the waveform of sampling was corresponding with coupling path.

Above-mentioned a kind of lightning surge generator, control module is exported a synchronous triggering signal by the synchronous triggering port in surge pulse output.Simultaneously, control module also can be controlled the output of surge pulse by the synchronous triggering signal of synchronous triggering port input.Control module can be adjusted the edge and the level size of trigger pip according to testing requirements.By input, output synchronous triggering signal, can be implemented in other transient parameters of synchronous detection when being subjected to examination equipment to carry out surge test.

[description of drawings]

Accompanying drawing 1 is the structured flowchart of embodiment 1 of the present utility model;

Accompanying drawing 2 is the structured flowchart of embodiment 2 of the present utility model;

[embodiment]

Embodiment 1

Below by embodiment, the utility model will be further described.

As shown in Figure 1, a kind of lightning surge generator architecture block diagram comprises high-voltage power supply 2, surge pulse forming unit 3, control module 1, quick sampling circuit 5, synchronous triggering port 6, demonstration and button 7.High-voltage power supply 2 output terminals are connected with surge pulse forming unit 3 input ends, surge pulse forming unit 3 is exported the surge that produces by trying equipment test end 8, sample circuit 5 sampled points are located at surge pulse forming unit 3 and are tried between the equipment test end 8 simultaneously and rapidly.

In the present embodiment, high-voltage power supply 2 is a dc high-voltage source, control module 1 control high-voltage power supply 2 is with fixed step size output dc voltage successively, thereby surge pulse forming unit 3 is also exported the surge pulse successively according to a fixed step size, the surge pulse that produces is applied directly to and is subjected on the examination equipment 9 by trying equipment test end 8, and control module 1 control quick sampling circuit 5 is gathered the voltage and current Wave data that is tried equipment test end 8 simultaneously.Quick sampling circuit 5 feeds back to control module 1 with surge voltage, the circuit waveform data that collect, control module 1 is finished in real time to be sent to after the analyzing and processing of data and is shown and key circuit 7, show with key circuit 7 and the result that analyzes directly can be shown by the LCD display of lightning surge generator, can realize that like this test analysis is integrated, very directly perceived, quick to the analysis of Wave data.

Control module 1 is analyzed the peak value of surge voltage, electric current according to the Wave data of gathering, and the peak value of surge voltage, electric current and the limit value that impacted by examination equipment 9 antisurges compared differentiation, when being subjected to examination equipment abnormal conditions in test process, to occur, as open circuit or short circuit, the surge voltage that records, current peak will be excessive or too small, to such an extent as to exceed the upper limit or be lower than lower limit, control module will be exported an identification signal and came the closing/disconnect of gauge tap amount (or the demonstration of the startup of acousto-optic, character etc.) this moment, did not meet product to identify.By this automatic identification mode, can filter out against regulation product rapidly.In control module 1 control high-voltage power supply 2, the process of surge pulse forming unit 3 with fixed step size output test pulse successively, when identify be subjected to examination equipment 9 to reach voltage breakdown after, automatically stop test immediately, so not only can accurately find out and be tried the equipment minimum break-down voltage, analytical electron equipment is subjected to the process of surge impact, and can avoid being subjected to examination equipment to be subjected to excessive surge impact and to cause great destruction.

Measure when being subjected to examination equipment need carry out other transient parameters when carrying out surge test, control module 1 is exported a synchronous triggering signal by synchronous triggering port 6 in surge pulse output.Or control module 1 is by the output of the synchronous triggering signal control surge pulse of synchronous triggering port 6 inputs, and control module 1 can be adjusted the edge and the level size of trigger pip according to testing requirements.Finish the measurement of other transient parameters when can realize like this being subjected to examination equipment to carry out surge test.

Embodiment 2

As shown in Figure 2, a kind of lightning surge generator architecture block diagram, the lightning surge generator of present embodiment is similar to embodiment 1.Main test is connected with under the situation of electrical network by examination equipment, the lightning surge generator is except comprising the element described in the embodiment 1, also comprise coupling/decoupling network 4, be mainly used in the pulse that surge pulse forming unit 3 is produced and be coupled to tested device, form decoupling simultaneously and between the electrical network, in order to avoid surge impulse disturbances public electric wire net.

In the present embodiment, control module 1 control high-voltage power supply 2 is with fixed step size output dc voltage successively, thereby surge pulse forming unit 3 is also exported the surge pulse successively according to a fixed step size, the surge pulse that produces is coupled to by coupling/decoupling network 4 and is tried on the equipment test end 8, is outputed to the examination equipment 9 that is subjected to by trying equipment test end 8.Control module 1 control quick sampling circuit 5 is gathered the voltage and current Wave data that is tried equipment test end 8 simultaneously.Quick sampling circuit 5 feeds back to control module 1 with surge voltage, the circuit waveform data that collect, control module 1 is finished in real time to be sent to after the analyzing and processing of data and is shown and key circuit 7, show with key circuit 7 and the result that analyzes directly can be shown by the LCD display of lightning surge generator, can realize that like this test analysis is integrated, directly perceived, quick to the analysis of Wave data.

Coupling/decoupling network 4 controlled unit 1 controls in the present embodiment, in test process, the switching of control module 1 control coupling/decoupling network 4 coupling paths, to satisfy the surge test requirement that Line To Line, line wait each path over the ground, control module 1 is according to the switching of coupling path control quick sampling circuit 5 sampled points after switching simultaneously.So both satisfied the requirement of different coupling path tests, and guaranteed that the waveform of sampling was corresponding with coupling path.

It is identical with the foregoing description 1 with step in the present embodiment differentiation measuring method that do not meet product and function to be sought the method for minimum break-down voltage.Finish the measurement of other transient parameters when present embodiment can be realized being subjected to examination equipment to carry out surge test equally, its measuring method is identical with embodiment 1 with step.

The described a kind of lightning surge generator of the foregoing description, by built-in quick sampling circuit, can test intuitively, quickly and be subjected to examination equipment, analytical test result, and voltage, the current data of gathering and the limit value that tried the equipment antisurge are compared differentiation select against regulation product with Automatic sieve, improved the efficient of test, can fast, accurately seek out voltage breakdown by the mode of Based Intelligent Control output surge.Its convenient test, quick, security is good, cost performance is high.

What need at last to state is: in addition to the implementation; this enforcement is novel can also other embodiments; those skilled in the art can implement novelly to make amendment or be equal to replacement to this, all drops on the protection domain that this implements novel requirement but revise the back or be equal to the replacement technology.

Claims

1. lightning surge generator, comprise high-voltage power supply (2), surge pulse forming unit (3), coupling/decoupling network (4), it is characterized in that, also comprise control module (1), quick sampling circuit (5), synchronous triggering port (6), described high-voltage power supply (2) output terminal is connected with described surge pulse forming unit (3) input end, surge pulse forming unit (3) is applied directly to the surge pulse that produces or is coupled to by coupling/decoupling network (4) and tried on the equipment test end (8), and control module (1) is controlled quick sampling circuit (5) synchronous acquisition and tried pulse voltage and current waveform data on the equipment test end (8).

2. a kind of lightning surge generator as claimed in claim 1, it is characterized in that, described control module (1) is relatively to differentiate the limit value that impacted by examination equipment (9) antisurge that pulse voltage that quick sampling circuit (5) gathers, current waveform data and user set, and according to the control module of discrimination result output identification or execution signal.

3. a kind of lightning surge generator as claimed in claim 1 is characterized in that, the control module that described control module (1) boosts by a fixed step size successively for control high-voltage power supply (2).

4. a kind of lightning surge generator as claimed in claim 1 is characterized in that, described synchronous triggering port (6) is the synchronous triggering port (6) that is used to import, export synchronous triggering signal, and described synchronous triggering port (6) links to each other with control module (1).