CN104391255A - Switching power supply fault simulator - Google Patents
Switching power supply fault simulator Download PDFInfo
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- CN104391255A CN104391255A CN201410675106.1A CN201410675106A CN104391255A CN 104391255 A CN104391255 A CN 104391255A CN 201410675106 A CN201410675106 A CN 201410675106A CN 104391255 A CN104391255 A CN 104391255A
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Abstract
The invention relates to the field of switching power supply and discloses a switching power supply fault simulator. The simulator comprises a box, a switching panel arranged on the top of the box, a switching power supply circuit and a relay circuit both arranged at the bottom of the box, and a fan and a fault setting region both arranged at the side edges of the box, wherein a test hole for testing the voltage is formed in the switching panel; a plurality of fault points are arranged in the switching power supply circuit; the fault points are connected with the fault setting region by use of the relay circuit. The switching power supply fault simulator improves the waveform observation, fault analysis and fault resolution capabilities of a switching power supply system.
Description
Technical field
The present invention relates to disconnector field, particularly relate to a kind of Switching Power Supply failure simulation device.
Background technology
Switching Power Supply product is widely used in the fields such as industrial automatic control, military industry equipment, research equipment, LED illumination, industrial control equipment, and Switching Power Supply is generally the part occurred frequently of fault, fault diagnosis carried out quickly and easily to Switching Power Supply significant.
The fault diagnosis of current Switching Power Supply has manual method and automatic diagnosis method.
Manual method is the voltage signal utilizing multimeter or oscillograph etc. directly to measure Switching Power Supply interdependent node, by analysis node voltage waveform, judges what malfunction is Switching Power Supply be in.This method complex operation, efficiency is low; And containing high-pressure section in Switching Power Supply, if misoperation can produce injury to equipment under test and tester.
Automatic diagnosis method mainly utilizes test needle-bar, the equipment such as program control flying needle, to be contacted and obtains node voltage signal, then analyze these information, and then judge the malfunction of Switching Power Supply by test probe with respective nodes in circuit.Method of testing traditionally, all need when designer will test certain unit or parts to make special needle-bar, owing to needing accurate location between plank and needle-bar, need various test fixture and coupling arrangement, cause diagnostic system complexity, complex operation.This method is worn and torn due to test probe, problems such as loose contact and reduce the reliability of diagnosis.
In addition because above-mentioned manual method and automatic diagnosis method all need direct contact-making switch power supply circuit board, if Switching Power Supply does the insulation protection process such as embedding, its test node and the external world completely isolated, then cannot contact measurement.Especially to the circuit of some special applications, contact diagnostic method can bring larger interference to primary circuit, and even make fault diagnosis carry out, these all constrain the application of said method.
Therefore need to research and develop a kind of Switching Power Supply failure simulation device, trouble spot is drawn out to fault verification district by auxiliary circuit (relay switching circuit), can carry out opening or closing artificially, at any time when not contact-making switch power supply.When trouble spot is closed, Switching Power Supply knowledge figure and systematic analysis ability can be improved, improve the designed capacity of Switching Power Supply; When trouble spot is opened, improve waveform observation and fault analysis, fault resolution ability.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the invention is: a kind of Switching Power Supply failure simulation device is provided, improve Switching Power Supply knowledge figure and systematic analysis ability, improve the designed capacity of Switching Power Supply and improve waveform observation and fault analysis, fault resolution ability.
In order to solve the technical matters in background technology, the invention provides a kind of Switching Power Supply failure simulation device, comprise casing, be located at the switch panel at described casing top, the switching power circuit being located at described bottom half and relay circuit, be located at the fault verification district of described casing side, described switch panel is provided with the instrument connection for test voltage, be provided with several trouble spots in described switching power circuit, described trouble spot is connected with described fault verification district by relay circuit.
Particularly, described switch panel is provided with and exchanges input test hole, direct current output waveform instrument connection, switch transformed circuit instrument connection, control protection electric circuit instrument connection and auxiliary power circuit instrument connection.
Preferably, described switch panel is transparent, described switch panel is also provided with the power switch, the operation control knob of gauge tap electric power main circuit work and the pilot lamp of display working condition that control whole system energising and power-off.
Particularly, described switching power circuit comprises input/filter rectifier, switch transformed circuit, power conversion circuit, regulator rectifier circuit, trigger pulse amplifying circuit, output/control protection electric circuit and auxiliary power circuit.
Alternatively, described switching power circuit is provided with the trouble spot of analog power mainboard blowout, the trouble spot of the electrochemical capacitor electric leakage of power conversion circuit on analog power mainboard, the trouble spot that simulation high-frequency rectification pipe is breakdown, the trouble spot that simulation High frequency filter inductance is blown, the trouble spot that in simulation trigger pulse amplifying circuit, triode is breakdown, the trouble spot that in simulation trigger pulse amplifying circuit, amplifier tube punctures, the grid of the trouble spot that the voltage sampling resistor of simulating three end adjustable reference sources burns out and simulation auxiliary power circuit power tube, the trouble spot punctured between source electrode.
Preferably, described switch transformed circuit comprises half-bridge converter.
Alternatively, described body side is also provided with the fan for dispelling the heat.
The principle of Switching Power Supply failure simulation device of the present invention is provided with trouble spot in Switching Power Supply, and trouble spot is drawn out to fault verification district by auxiliary circuit (relay switching circuit), can be artificial, carry out opening or closing at any time.When trouble spot is closed, Switching Power Supply knowledge figure and systematic analysis ability can be improved, improve the designed capacity of Switching Power Supply; When trouble spot is opened, improve waveform observation and fault analysis, fault resolution ability.
Adopt technique scheme, Switching Power Supply failure simulation device of the present invention improves Switching Power Supply knowledge figure and systematic analysis ability, improves the designed capacity of Switching Power Supply and improves waveform observation and fault analysis, fault resolution ability.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the system schematic of the Switching Power Supply failure simulation device that the embodiment of the present invention provides;
Fig. 2 is that the trouble spot of the Switching Power Supply failure simulation device that the embodiment of the present invention provides arranges schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
The structural representation of the Switching Power Supply failure simulation device that embodiment: Fig. 1 provides for the embodiment of the present invention, can clearly be seen that from figure, the Switching Power Supply failure simulation device that the present embodiment provides comprises casing, be located at the switch panel at described casing top, be located at switching power circuit and the relay circuit of described bottom half, be located at the fault verification district of described casing side, described switch panel is provided with the instrument connection for test voltage, several trouble spots are provided with in described switching power circuit, described trouble spot is connected with described fault verification district by relay circuit.
Particularly, described switch panel is provided with and exchanges input test hole, direct current output waveform instrument connection, switch transformed circuit instrument connection, control protection electric circuit instrument connection and auxiliary power circuit instrument connection.
Preferably, described switch panel is transparent, described switch panel is also provided with the power switch, the operation control knob of gauge tap electric power main circuit work and the pilot lamp of display working condition that control whole system energising and power-off.
Particularly, power switch controls energising and the power-off of whole system, after power switch is connected, auxiliary power circuit working station indicator lights, filter rectifier, auxiliary power circuit are started working, and now can exchange the waveform of input test hole, auxiliary power circuit instrument connection with oscilloscope measurement.
Whether the main circuit work of operation control knob gauge tap power supply.After operation control knob is allocated to and opens; switch transformed circuit working station indicator lights; now switch transformed circuit, regulator rectifier circuit, control protection electric circuit are just started working, and now can export the waveform of instrument connection with oscilloscope measurement switch transformed circuit instrument connection, control protection electric circuit instrument connection and direct current.
When failure simulation device normally works (trouble spot closedown), three-phase regulator is regulated to make installation's power source reach 220V, the uncontrollable rectifier voltage that now in power conversion circuit, rectification exports is about 310V, simultaneously, auxiliary power circuit working station indicator lights, auxiliary power circuit part is started working, and can observe with oscillograph the waveform that rectification on transparent panel exports observation port, direct current exports observation port, control circuit observation port respectively.
Now regulating load resistance, observation voltage table, reometer monitoring numerical value, complete record Switching Power Supply performance parameter; And carry out normal work wave measurement, for follow-up troubleshooting and maintenance training are prepared.
Particularly, described switching power circuit comprises input/filter rectifier, switch transformed circuit, power conversion circuit, regulator rectifier circuit, trigger pulse amplifying circuit, output/control protection electric circuit and auxiliary power circuit.
Alternatively, described switching power circuit is provided with the trouble spot of analog power mainboard blowout, the trouble spot of the electrochemical capacitor electric leakage of power conversion circuit on analog power mainboard, the trouble spot that simulation high-frequency rectification pipe is breakdown, the trouble spot that simulation High frequency filter inductance is blown, the trouble spot that in simulation trigger pulse amplifying circuit, triode is breakdown, the trouble spot that in simulation trigger pulse amplifying circuit, amplifier tube punctures, the grid of the trouble spot that the voltage sampling resistor of simulating three end adjustable reference sources burns out and simulation auxiliary power circuit power tube, the trouble spot punctured between source electrode.
As shown in Figure 2, trouble spot 1 is positioned at filter rectifier, the blowout of analog power mainboard, and phenomenon of the failure is that auxiliary power circuit working station indicator can not be lighted, and power supply mainboard can not start;
Trouble spot 2 is positioned at the output terminal of filter rectifier, the electrochemical capacitor electric leakage of power conversion circuit on analog power mainboard, and phenomenon of the failure is rectifier output voltage value UDC≤+ 300V, and power supply mainboard still can normally work;
Trouble spot 3 is positioned at regulator rectifier circuit, the high-frequency rectification pipe of simulation+3.3V high-frequency rectification circuit is breakdown, phenomenon of the failure is for after startup power supply mainboard, radiator fan fine motion once, namely quits work, and power conversion circuit working station indicator can not be lighted, inversion exports no-output value, auxiliary power circuit working station indicator is normally lighted, and "+5V " exports normal, but "+3.3V " does not export;
Trouble spot 4 is positioned at regulator rectifier circuit, simulation+12V High frequency filter inductance is blown, phenomenon of the failure is for after startup power supply mainboard, namely radiator fan quits work behind micro-left and right of circling, power conversion circuit working station indicator can not be lighted, and inversion exports no-output value, and auxiliary power circuit working station indicator is normally lighted, "+5V " exports normal, but "+12V " does not export;
Trouble spot 5 is positioned at control protection electric circuit, triode in simulation trigger pulse amplifying circuit is breakdown, phenomenon of the failure is the collection of triode, waveform obviously diminishes between emitter-base bandgap grading, and serious interference, howling is sent during power supply main board work, all higher more than the 0.1V of magnitude of voltage of lower pressure rectifier output, and switch is allocated to stopping side " will to run control ", device still runs;
Trouble spot 6 is positioned at control protection electric circuit, amplifier tube in simulation trigger pulse amplifying circuit punctures, phenomenon of the failure is the collection of amplifier tube, waveform obviously diminishes between emitter-base bandgap grading, and serious interference, howling is sent during power supply main board work, all higher more than the 0.1V of magnitude of voltage of lower pressure rectifier output, and switch is allocated to stopping side " will to run control ", device still runs;
Trouble spot 7 is positioned at auxiliary power circuit, the voltage sampling resistor of simulating the Voltage Reference end in three end adjustable reference sources burns out, phenomenon of the failure is for after startup power supply mainboard, power conversion circuit working station indicator can not be lighted, inversion exports no-output value, though auxiliary power circuit working station indicator can be lighted, slightly dark, "+5V " output voltage values <+3.5V;
Trouble spot 8 is positioned at auxiliary power circuit, simulate between the grid of auxiliary power circuit power tube, source electrode and puncture, phenomenon of the failure is for after startup power supply mainboard, power conversion circuit working station indicator can not be lighted, inversion exports no-output value, auxiliary power circuit working station indicator can not be lighted, and between the grid of power tube, source, magnitude of voltage is 0.3MV.
Preferably, described switch transformed circuit comprises half-bridge converter.
Alternatively, described body side is also provided with the fan for dispelling the heat.
Switching Power Supply failure simulation device of the present invention improves Switching Power Supply knowledge figure and systematic analysis ability, improves the designed capacity of Switching Power Supply and improves waveform observation and fault analysis, fault resolution ability.
Above disclosedly be only several preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (7)
1. a Switching Power Supply failure simulation device, it is characterized in that, comprise casing, be located at the switch panel at described casing top, the switching power circuit being located at described bottom half and relay circuit, be located at the fault verification district of described casing side, described switch panel is provided with the instrument connection for test voltage, be provided with several trouble spots in described switching power circuit, described trouble spot is connected with described fault verification district by relay circuit.
2. Switching Power Supply failure simulation device as claimed in claim 1; it is characterized in that, described switch panel is provided with and exchanges input test hole, direct current output waveform instrument connection, switch transformed circuit instrument connection, control protection electric circuit instrument connection and auxiliary power circuit instrument connection.
3. Switching Power Supply failure simulation device as claimed in claim 2, it is characterized in that, described switch panel is transparent, described switch panel is also provided with the power switch, the operation control knob of gauge tap electric power main circuit work and the pilot lamp of display working condition that control whole system energising and power-off.
4. Switching Power Supply failure simulation device as claimed in claim 1; it is characterized in that, described switching power circuit comprises input/filter rectifier, switch transformed circuit, power conversion circuit, regulator rectifier circuit, trigger pulse amplifying circuit, output/control protection electric circuit and for providing the auxiliary power circuit of operating voltage for Switching Power Supply control and scheduling co-design circuit.
5. Switching Power Supply failure simulation device as claimed in claim 4, it is characterized in that, described switching power circuit is provided with the trouble spot of analog power mainboard blowout, the trouble spot of the electrochemical capacitor electric leakage of power conversion circuit on analog power mainboard, the trouble spot that simulation high-frequency rectification pipe is breakdown, the trouble spot that simulation High frequency filter inductance is blown, the trouble spot that in simulation trigger pulse amplifying circuit, triode is breakdown, the trouble spot that in simulation trigger pulse amplifying circuit, amplifier tube punctures, the grid of the trouble spot that the voltage sampling resistor of simulating three end adjustable reference sources burns out and simulation auxiliary power circuit power tube, the trouble spot punctured between source electrode.
6. Switching Power Supply failure simulation device as claimed in claim 4, it is characterized in that, described switch transformed circuit comprises half-bridge converter.
7. as the Switching Power Supply failure simulation device in claim 1-6 as described in any one, it is characterized in that, described body side is also provided with the fan for dispelling the heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675106.1A CN104391255A (en) | 2014-11-21 | 2014-11-21 | Switching power supply fault simulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410675106.1A CN104391255A (en) | 2014-11-21 | 2014-11-21 | Switching power supply fault simulator |
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| CN201410675106.1A Pending CN104391255A (en) | 2014-11-21 | 2014-11-21 | Switching power supply fault simulator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920314A (en) * | 2019-04-16 | 2019-06-21 | 广东交通职业技术学院 | A relay fault simulation circuit and relay teaching board |
| CN110806702A (en) * | 2019-11-08 | 2020-02-18 | 中核兰州铀浓缩有限公司 | TP board card of centrifugal uranium concentration system |
| CN112014725A (en) * | 2020-09-02 | 2020-12-01 | 韩熔 | Multi-node waveform pre-storage fault detection method for electronic circuit board |
| CN116500487A (en) * | 2023-06-25 | 2023-07-28 | 深圳市力生美半导体股份有限公司 | Fault detection system and method for switching power supply, terminal equipment and medium |
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| CN102750867A (en) * | 2012-07-10 | 2012-10-24 | 南京化工职业技术学院 | Practical training check device for computer switching power supply |
| CN202694666U (en) * | 2012-07-10 | 2013-01-23 | 南京化工职业技术学院 | Training assessment device for computer switch power supply |
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- 2014-11-21 CN CN201410675106.1A patent/CN104391255A/en active Pending
Patent Citations (5)
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| CN201032570Y (en) * | 2007-03-26 | 2008-03-05 | 海尔集团公司 | Household appliances computer plate component ordinary fault detection maintenance simulating device |
| CN101806857A (en) * | 2010-04-27 | 2010-08-18 | 中国人民解放军总装备部军械技术研究所 | Online fault diagnostic apparatus for circuit board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920314A (en) * | 2019-04-16 | 2019-06-21 | 广东交通职业技术学院 | A relay fault simulation circuit and relay teaching board |
| CN110806702A (en) * | 2019-11-08 | 2020-02-18 | 中核兰州铀浓缩有限公司 | TP board card of centrifugal uranium concentration system |
| CN110806702B (en) * | 2019-11-08 | 2021-07-20 | 中核兰州铀浓缩有限公司 | TP board card of centrifugal uranium concentration system |
| CN112014725A (en) * | 2020-09-02 | 2020-12-01 | 韩熔 | Multi-node waveform pre-storage fault detection method for electronic circuit board |
| CN112014725B (en) * | 2020-09-02 | 2023-03-10 | 韩熔 | Multi-node waveform pre-storage fault detection method for electronic circuit board |
| CN116500487A (en) * | 2023-06-25 | 2023-07-28 | 深圳市力生美半导体股份有限公司 | Fault detection system and method for switching power supply, terminal equipment and medium |
| CN116500487B (en) * | 2023-06-25 | 2023-09-19 | 深圳市力生美半导体股份有限公司 | Fault detection system and method for switching power supply, terminal equipment and medium |
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