CN103630801A - Voltage withstanding test device with positive and negative polarity voltage output - Google Patents
Voltage withstanding test device with positive and negative polarity voltage output Download PDFInfo
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- CN103630801A CN103630801A CN201210312973.XA CN201210312973A CN103630801A CN 103630801 A CN103630801 A CN 103630801A CN 201210312973 A CN201210312973 A CN 201210312973A CN 103630801 A CN103630801 A CN 103630801A
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Abstract
The invention discloses a voltage withstanding test device with positive and negative polarity voltage output, and an electronic device can be tested via selectively outputting positive and negative polarity voltage. The voltage withstanding test device comprises a signal generation module, an output terminal and a switching module which is electrically connected between the signal generation module and the output terminal. The switching module comprises a first switch and a second switch. The signal generation module can generate a high-voltage signal to the switching module, and the output terminal is electrically connected with an object to be tested. Connection or disconnection is realized via the first switch and the second switch. The received high-voltage signal can be outputted as DC negative voltage, DC negative voltage or AC voltage by the switching module, and DC negative voltage, DC negative voltage or AC voltage are transmitted to the output terminal.
Description
Technical field
The invention relates to a kind of pressure resistant testing device, and especially, the pressure resistant testing device about the exportable straight polarity voltage of a kind of tool, direct current reverse voltage and alternating voltage with testing electronic devices.
Background technology
Today of science and technology prosperity, little of personal lifestyle great Zhi international community, electronic installation is all omnipresent.Because electronic installation is to be so widely used in various fields, therefore guarantee that its safe operation is considerable problem.No matter be electronic installation (such as electric heater, hair-dryer etc.) or electronic component (such as photo-coupler, capacitor, solar panels etc.), after producing or before selling, all must test to confirm whether it meets safety requirements by a series of safety.If electronic product is not used by above-mentioned safety test, may cause product damage because of paroxysmal spread of voltage, what is more, may jeopardize user's personal safety.
Above-mentioned safety test pack is containing proof voltage test and Insulation test.When proof voltage is tested, proving installation can be exported Hi-pot test voltage to electronic component to be measured or product, to test it, whether can meet the proof voltage condition of safety requirements.Then, the lower Insulation test voltage of proving installation output to electronic component to be measured or product to test its insulation values.
Electronic component or the product of part, for example ceramic capacitor or solar panels, after Hi-pot test, itself can produce residual voltage (remained voltage), and the Hi-pot test voltage swing of inputting when the voltage swing of residual voltage and Hi-pot test is the relation of equal proportion.Then the Insulation test carrying out is owing to being to carry out with less voltage, and the impact that therefore may be subject to residual voltage causes test error excessive.
Refer to Fig. 1, Fig. 1 is the schematic diagram that illustrates in prior art change in voltage when electronic installation carries out Hi-pot test and Insulation test.Voltage (V) and transverse axis when as shown in Figure 1, the longitudinal axis is for test are test duration (T).Curve L1 is that electronic installation carries out the voltage that Hi-pot test is inputted, and for example its ceiling voltage reaches 6600 volts, the residual voltage that curve L2 produces for electronic installation after Hi-pot test, and for example its highest residual voltage is about 1000 volts.Curve L3 is that electronic installation carries out the voltage that Insulation test is inputted, and for example its ceiling voltage is 500 volts.As seen from Figure 1, the voltage of inputting during Insulation test is less than residual voltage in partial periodicity, and in this partial periodicity, Insulation test will present insignificant negative current direction.In other words, the residual voltage that Hi-pot test produces will have a strong impact on the degree of accuracy of Insulation test.
Avoid the problem of above-mentioned residual voltage, can after residual voltage disappears, carry out again Insulation test, but this kind of method can increase the whole test duration.In addition, also can when Insulation test, to the voltage signal of determinand input opposite polarity, avoid residual voltage problem.Refer to Fig. 2, Fig. 2 illustrates the schematic diagram of inputting the change in voltage of opposed polarity voltage when electronic installation carries out Hi-pot test and Insulation test.As shown in Figure 2, when if positive voltage is inputted in Hi-pot test, Insulation test is inputted negative voltage, therefore because the residual voltage of curve L2 ' representative is contrary with the Insulation test polarity of voltage of curve L3 ' representative, can avoid insignificant negative current direction and affect the accuracy of Insulation test.In addition,, when safety is tested, if when the shunt capacitance of the determinands such as electronic component or product is excessive, cannot use ac voltage withstanding test and the test of necessary use DC break down voltage, therefore determinand only receives the safety test of direct-flow positive voltage under this situation.Yet determinand may have different test results when negative voltage is tested, therefore only with direct-flow positive voltage input, cannot really simulate negative voltage and alternating voltage state.
In prior art, be with circuit independently, to carry out respectively high pressure and the Insulation test of above-mentioned opposed polarity, yet independently circuit not only make whole device architecture complexity improve, and has also improved the cost of proving installation simultaneously.On the other hand, in prior art, also provide with scan mode and carry out both positive and negative polarity switching, this kind of mode will exchange input end and earth terminal originally when switching both positive and negative polarity test.For instance, when positive voltage is tested, the test lead of electronic installation receives from the positive voltage of proving installation and the earthing of casing; When negative voltage is tested, the shell of electronic installation receives from the positive voltage test lead of proving installation ground connection, and in other words, the test lead of electronic installation is negative voltage input for earth terminal.Yet this kind of negative voltage test pole may be subject to high-voltage electric shock because of the shell of operating personnel's false touch electronic installation, and then endangers its personal safety.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of pressure resistant testing device with positive-negative polarity Voltage-output, to solve the problem of prior art.
According to a specific embodiment, the pressure resistant testing device with positive-negative polarity Voltage-output of the present invention comprises signal generator module, output terminal and handover module, and wherein, handover module is electrically connected between signal generator module and output terminal.Signal generator module can be used to produce high-voltage signal to handover module, and output terminal can be electrically connected to determinand.Handover module comprises the first switch or second switch, and is sent to output terminal after received high-voltage signal can being output as to direct-flow positive voltage, negative DC voltage or alternating voltage according to the first switch and coordinating of second switch, so that determinand is tested.
In this specific embodiment, when the first switch conduction and second switch open circuit, handover module can be output as high-voltage signal negative DC voltage and be sent to output terminal; When the first switch open circuit and second switch conducting, handover module can be output as high-voltage signal direct-flow positive voltage and be sent to this output terminal; And when the first switch and second switch conducting simultaneously, handover module can be output as high-voltage signal alternating voltage and be sent to output terminal.
Can be by following detailed Description Of The Invention and appended graphic being further understood about the advantages and spirit of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that illustrates in prior art change in voltage when electronic installation carries out Hi-pot test and Insulation test.
Fig. 2 illustrates the schematic diagram of inputting the change in voltage of opposed polarity voltage when electronic installation carries out Hi-pot test and Insulation test.
Fig. 3 is the schematic diagram illustrating according to the pressure resistant testing device with positive-negative polarity Voltage-output of another specific embodiment of the present invention.
Fig. 4 is the schematic diagram illustrating according to the pressure resistant testing device with positive-negative polarity Voltage-output of another specific embodiment of the present invention.
Wherein, description of reference numerals is as follows:
L1, L2, L3, L1 ', L2 ', L3 ': curve;
1,2: the pressure resistant testing device with positive-negative polarity Voltage-output;
10,20: signal generator module; 12,22: handover module;
14,24: output terminal; 16,26: control module;
100,200: sine-wave producer; 102,202: power amplifier;
104,204: high-tension transformer; 120,220: the first switches;
122,222: second switch; 124,224: the first diodes;
126,226: the second diodes; 128,228: the three switches;
140,240: earth terminal; 160,260: control module;
162,262: the first converting units; 164,264: the second converting units;
180,280: divided circuit; 182,282: bleeder circuit.
Embodiment
Refer to Fig. 3, Fig. 3 is the schematic diagram illustrating according to the pressure resistant testing device with positive-negative polarity Voltage-output 1 of another specific embodiment of the present invention.As shown in Figure 1, the output terminal 14 that pressure resistant testing device 1 comprises signal generator module 10, is electrically connected at the handover module 12 of signal generator module 10 and is electrically connected at handover module 12.In addition, pressure resistant testing device 1 also can comprise the control module 16 that is electrically connected at signal generator module 10 and handover module 12, is used for 12 runnings of control signal generation module 10 and handover module.Output terminal 14 is in order to be electrically connected to the first end of a determinand, and the second end of determinand is electrically connected to the earth terminal 140 of pressure resistant testing device 1, and wherein, the first end of determinand is test lead.This determinand can be electronic component or the product that need carry out Hi-pot test and Insulation test, such as electric heater, hair-dryer, photo-coupler, capacitor or solar panels etc.
In this specific embodiment, handover module 12 comprises the first switch 120, second switch 122, the first diode 124 and the second diode 126.The positive pole of the first diode 124 is electrically connected at signal generator module 10, and the negative pole of the second diode 126 is electrically connected at the negative pole of the first diode 124 and the positive pole of the second diode 126 is electrically connected at output terminal 14.The first switch 120 is connected in parallel in the first diode 124, and second switch 122 is connected in parallel in the second diode 126.Handover module 12 also includes the 3rd switch 128 and is electrically connected at output terminal 14, the three switches 128 and is controlled by equally control module 16 and conducting or open circuit, and the 3rd switch 128 is connected with a RC filtering circuit with 10 of signal generator modules.
When the first switch 120 and second switch 122 conductings and the 3rd switch 128 open circuit, high-voltage signal is through the first switch 120 and second switch 122 and be sent to output terminal 14, and can provide the first end of the high-voltage signal of this interchange to determinand (test lead) to test by output terminal 14.As mentioned above, by controlling the first switch 120, second switch 122 and the 3rd switch 128, the high-voltage signal that signal generator module 10 can be produced directly exports the test lead of determinand to the form of direct-flow positive voltage, negative DC voltage and alternating voltage.
Referring again to Fig. 3, as shown in Figure 3, pressure resistant testing device 1 further comprises divided circuit 180 and bleeder circuit 182, wherein, divided circuit 180 can be electrically connected at second end (earth terminal 140) of above-mentioned determinand, and 282 of bleeder circuits can be electrically connected between the first end (output terminal 14) and the second end (earth terminal 140) of determinand.Divided circuit 180 is used for respectively detecting electric current and the voltage of determinand with bleeder circuit 182, and produces according to this simulating signal of feedback current and the simulating signal of feedback voltage.Divided circuit 180 and bleeder circuit 182 can be electrically connected respectively control module 16, so that the Imitation conveyance of above-mentioned feedback current and voltage to control module 16 is supplied to carry out measuring and calculation.
In this specific embodiment, control module 16 can further comprise control module 160, the first converting unit 162 and the second converting unit 164, wherein, the first converting unit 162 is electrically connected at control module 160 and is electrically connected at respectively control module 160 and divided circuit 180 and bleeder circuit 182 with 164 of signal generator module 10, the second converting units.Control module 160 can produce digital signal to the first converting unit 162 that output is controlled, then, the digital signal that the first converting unit 162 can be controlled this output is sent to signal generator module 10 after converting to and exporting the simulating signal of controlling, the 10 analogue signal generating high-voltage signals that can control according to this output of signal generator module.On the other hand, the feedback current that above-mentioned divided circuit 180 and bleeder circuit 182 produce and the simulating signal of voltage, after can converting respectively the digital signal of feedback current and voltage to via the second converting unit 164, be back to again control module 160, make control module 160 carry out measuring and calculation according to the digital signal of feedback current and voltage.In addition the control module 100 that, each switch of handover module 12 is controlled in module 10 is equally controlled.For example, if an operator wants with direct-flow positive voltage, determinand to be tested, can descend operational order to control module 100,100 of control modules are controlled the first switch 120 open circuits, second switch 122 and the 3rd switch 128 conductings according to operational order.What is more, control module 100 can mat steering logic program be controlled handover module 12, to reach the effect of automated variable voltage tester.
The control that signal generator module 10 can receive control module 16 produces high-voltage signal, described in it is described in detail as follows.In this specific embodiment, signal generator module 10 further comprises sine-wave producer 100, power amplifier 102 and high-tension transformer 104.Sine-wave producer 100 is electrically connected at the first converting unit 162 of control module 16, to receive from the first converting unit 162 simulating signal that output is controlled, and produces according to this sinusoidal wave.Power amplifier 102 is electrically connected at sine-wave producer 100, and the sine wave that it can produce according to sine-wave producer 100 produces and drives signal.High-tension transformer 104 is electrically connected at power amplifier 102 and handover module 12, to receive and to drive signal from power amplifier 102, and exports handover module 12 to after driving signal is converted to high-voltage signal.
Refer to Fig. 4, Fig. 4 is the schematic diagram illustrating according to the pressure resistant testing device with positive-negative polarity Voltage-output 2 of another specific embodiment of the present invention.As shown in Figure 4, this specific embodiment and above-mentioned specific embodiment do not exist together, and be that the positive pole of the first diode 224 of the handover module 22 of this specific embodiment is electrically connected at output terminal 24, and the negative pole of the second diode 226 are electrically connected at output terminal 24.In addition, the first switch 220 of handover module 22 is electrically connected between signal generator module 20 and the negative pole of the first diode 224, and 222 of second switches are electrically connected between signal generator module 20 and the positive pole of the second diode 226.Other unit of the pressure resistant testing device 2 of this specific embodiment is all identical substantially with the corresponding unit in the pressure resistant testing device 1 of above-mentioned specific embodiment, therefore repeat no more in this.
In this specific embodiment, when control module 26 is controlled the first switch 220 conductings, second switch 222 open circuits and the 3rd switch 228 conducting, the negative voltage signal that the high-voltage signal that signal generator module 20 produces is converted to direct current after the first diode 224 and RC filtering circuit is sent to output terminal 24.On the other hand, when control module 26 is controlled the first switch 220 open circuits, second switch 222 conductings and the 3rd switch 228 conducting, the positive voltage signal that high-voltage signal is converted to direct current after the second diode 226 and RC filtering circuit is sent to output terminal 24.In addition, when control module 26 is controlled the first switch 220, second switch 222 conductings and the 3rd switch 228 open circuit, the high-voltage signal of interchange is sent to output terminal 24 through the first switch 220, second switch 222, the first diode 224 and the second diode 226.Please note, in another specific embodiment, the first switch 220 also can be arranged between the first diode 224 and output terminal 24, and second switch 222 also can be arranged between the second diode 226 and output terminal 24, can export direct-flow positive voltage, negative DC voltage or alternating voltage to output terminal 24 by the control of a upper specific embodiment equally.
In sum, pressure resistant testing device of the present invention can be by handover module to the first end of determinand (test lead) input direct-current positive voltage, negative DC voltage or alternating voltage, therefore pressure resistant testing device can carry out directly carrying out Insulation test with the test voltage of opposite polarity after Hi-pot test to determinand, the residual voltage of avoiding producing after Hi-pot test affects the degree of accuracy of Insulation test.On the other hand, compared to prior art, with scan mode, carry out the method for both positive and negative polarity switching, because pressure resistant testing device of the present invention is maintained at electronegative potential by second end (earth terminal) of determinand, can not make the shell of determinand with high tension voltage because of the polarity of test signal for a change, can avoid operator because false touch high pressure shell gets shocked, safe test environment is further provided.In addition, pressure resistant testing device of the present invention is with single circuit but not independent circuits provides direct-flow positive voltage, negative DC voltage or alternating voltage, therefore simplify uncomplicatedly on device architecture, can reduce the cost of proving installation.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and not with the above-mentioned preferred embodiment being disclosed, category of the present invention is limited.On the contrary, its objective is that hope can contain in the category of the scope of the claims of being arranged in of various changes and tool equality institute of the present invention wish application.Therefore, the category of the scope of the claims that the present invention applies for should be done the broadest explanation according to above-mentioned explanation, to cause it to contain the arrangement of all possible change and tool equality.
Claims (9)
1. a pressure resistant testing device with positive-negative polarity Voltage-output, comprises:
One signal generator module, in order to produce a high-voltage signal;
One output terminal, in order to be electrically connected the first end of a determinand, and the second end of this determinand is electrically connected at an earth terminal; And
One handover module, is electrically connected between this signal generator module and this output terminal, and in order to receive this high-voltage signal to export a direct-flow positive voltage, a negative DC voltage or an alternating voltage, this handover module comprises one first switch and a second switch;
Wherein, when this first switch conduction and this second switch open circuit, this handover module is sent to this output terminal by this negative DC voltage, when this first switch open circuit and this second switch conducting, this handover module is sent to this output terminal by this direct-flow positive voltage, when this first switch and the conducting simultaneously of this second switch, this handover module is sent to this output terminal by this alternating voltage.
2. pressure resistant testing device as claimed in claim 1, wherein this handover module further comprises:
One first diode, the positive pole of this first diode is electrically connected at this signal generator module; And
One second diode, the negative pole of this second diode is electrically connected at the negative pole of this first diode, and the positive pole of this second diode is electrically connected at this output terminal;
Wherein, this first switch in parallel is connected in this first diode, and this second switch is connected in parallel in this second diode.
3. pressure resistant testing device as claimed in claim 1, wherein this handover module further comprises:
One first diode, the positive pole of this first diode is electrically connected at this output terminal; And
One second diode, the negative pole of this second diode is electrically connected at this output terminal;
Wherein, this first switch is electrically connected between this signal generator module and the negative pole of this first diode, and this second switch is electrically connected between this signal generator module and the positive pole of this second diode.
4. the pressure resistant testing device as described in claim 1,2 or 3, wherein this handover module further comprises:
One the 3rd switch, is electrically connected at this output terminal; And
One filtering circuit, is electrically connected between the 3rd switch and this signal generator module;
Wherein, when this first switch and the conducting simultaneously of this second switch, the 3rd switch open circuit.
5. pressure resistant testing device as claimed in claim 1, further comprises:
One control module, is electrically connected at this signal generator module and this handover module, and this control module is in order to control this handover module, and produces simulating signal that an output controls to drive this signal generator module, and the curtage that detects this determinand.
6. pressure resistant testing device as claimed in claim 5, wherein this signal generator module comprises:
One sine-wave producer, is electrically connected at this control module, and this sine-wave producer is analogue signal generating one sine wave of controlling according to this output;
One power amplifier, is electrically connected at this sine-wave producer, and this power amplifier is according to this sine wave, to produce one to drive signal; And
One high-tension transformer, is electrically connected at this power amplifier, and this high-tension transformer is that this driving signal is converted to this high-voltage signal.
7. pressure resistant testing device as claimed in claim 5, wherein this control module comprises:
One control module, the digital signal of controlling in order to produce an output;
One first converting unit, is electrically connected at this control module, and this first converting unit is converted in order to the digital signal that this output is controlled the simulating signal that this output is controlled; And
One second converting unit, is electrically connected at this control module, and this second converting unit is in order to be converted to the simulating signal of a feedback current digital signal of one feedback current and the digital signal that the simulating signal of a feedback voltage is converted to a feedback voltage;
Wherein, this control module is to carry out measuring and calculation according to the digital signal of the digital signal of this feedback current or this feedback voltage.
8. pressure resistant testing device as claimed in claim 7, further comprises:
Shunt circuit, is electrically connected at the second end of this determinand, this divided circuit in order to the electric current that detects this determinand to produce the simulating signal of this feedback current.
9. pressure resistant testing device as claimed in claim 7, further comprises:
One bleeder circuit, is electrically connected between the first end and the second end of this determinand, this bleeder circuit in order to the voltage that detects this determinand to produce the simulating signal of this feedback voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312973.XA CN103630801A (en) | 2012-08-29 | 2012-08-29 | Voltage withstanding test device with positive and negative polarity voltage output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312973.XA CN103630801A (en) | 2012-08-29 | 2012-08-29 | Voltage withstanding test device with positive and negative polarity voltage output |
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| CN103630801A true CN103630801A (en) | 2014-03-12 |
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| CN201210312973.XA Pending CN103630801A (en) | 2012-08-29 | 2012-08-29 | Voltage withstanding test device with positive and negative polarity voltage output |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105301392A (en) * | 2015-10-22 | 2016-02-03 | 上海华虹宏力半导体制造有限公司 | Method for expanding voltage measurement range of ATE tester |
| CN105954670A (en) * | 2016-05-26 | 2016-09-21 | 工业和信息化部电子第五研究所 | ESD failure early warning circuit of integrated circuit |
| CN108459245A (en) * | 2018-03-12 | 2018-08-28 | 北京四方继保自动化股份有限公司 | A kind of Intelligent insulating voltage-withstand test circuit |
| CN109696606A (en) * | 2018-12-11 | 2019-04-30 | 安徽灿邦电气有限公司 | A kind of header box integrated testing platform |
| CN112965012A (en) * | 2021-02-25 | 2021-06-15 | 广州亚美智造科技有限公司 | Power supply polarity reverse connection testing device, testing system and testing method |
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2012
- 2012-08-29 CN CN201210312973.XA patent/CN103630801A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301392A (en) * | 2015-10-22 | 2016-02-03 | 上海华虹宏力半导体制造有限公司 | Method for expanding voltage measurement range of ATE tester |
| CN105954670A (en) * | 2016-05-26 | 2016-09-21 | 工业和信息化部电子第五研究所 | ESD failure early warning circuit of integrated circuit |
| CN105954670B (en) * | 2016-05-26 | 2019-06-07 | 工业和信息化部电子第五研究所 | Integrated circuit ESD early warning failure circuit |
| US10598713B2 (en) | 2016-05-26 | 2020-03-24 | Fifth Electronics Research Institute Of Ministry Of Industry And Information Technology | ESD failure early warning circuit for integrated circuit |
| CN108459245A (en) * | 2018-03-12 | 2018-08-28 | 北京四方继保自动化股份有限公司 | A kind of Intelligent insulating voltage-withstand test circuit |
| CN109696606A (en) * | 2018-12-11 | 2019-04-30 | 安徽灿邦电气有限公司 | A kind of header box integrated testing platform |
| CN112965012A (en) * | 2021-02-25 | 2021-06-15 | 广州亚美智造科技有限公司 | Power supply polarity reverse connection testing device, testing system and testing method |
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