CN203405560U - A switching power supply testing apparatus - Google Patents
A switching power supply testing apparatus Download PDFInfo
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- CN203405560U CN203405560U CN201320445584.4U CN201320445584U CN203405560U CN 203405560 U CN203405560 U CN 203405560U CN 201320445584 U CN201320445584 U CN 201320445584U CN 203405560 U CN203405560 U CN 203405560U
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Abstract
The utility model discloses a switching power supply testing apparatus comprising a switching power supply to be tested and a current detecting unit. The current detecting unit tests the alternating current of the switching power supply to be tested. The switching power supply testing apparatus also comprises a control switch group and a single chip microcomputer control unit connected with the control switch group. The single chip microcomputer control unit comprises an AC sampling port and a DC sampling port. The AC sampling port is connected with the current detecting unit. The DC sampling port is connected with the control switch group. The switching power supply to be tested comprises four ports. The switching power supply testing apparatus adds a short-circuit protection test which is automatically controlled by a single chip microcomputer to be completed in a testing process.
Description
Technical field
The utility model relates to a kind of power supply testing device, particularly a kind of Switching Power Supply proving installation.
Background technology
Switching Power Supply test mode of the prior art adopts traditional approach, needs oscillograph, electronic load, fixture etc.; Test process is higher to personnel's technical requirement, and testing procedure is tired many, tests each process and must manually instrument be transferred to corresponding state and test, and this test result very important person is for judging test result.
As Chinese patent " a kind of LED Switching Power Supply test macro ", kind LED Switching Power Supply test macro is disclosed, include civil power, the stabilized voltage supply being connected with civil power, stabilized voltage supply and voltage regulator join, voltage regulator and voltage control system join, voltage control system is connected with tested LED Switching Power Supply, voltage control system is also connected with man machine operation interface, tested LED Switching Power Supply is passed through AC, DC electric parameter tester is connected with man machine operation interface, tested LED Switching Power Supply is connected with man machine operation interface by variable electronic load, tested LED Switching Power Supply is connected with Research on Automatic Measuring System of Temperature with temperature sensor, Research on Automatic Measuring System of Temperature is connected with man machine operation interface, tested LED Switching Power Supply is connected with man machine operation interface by mode controller.In above-mentioned patented technology, adopt the test mode of LED Switching Power Supply, monolithic processor controlled automaticity is not high.
For above-mentioned defect, the utility model creator provides a kind of more perfect scheme.
Summary of the invention
The purpose of this utility model is to provide a kind of Switching Power Supply proving installation, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the utility model provides a kind of Switching Power Supply proving installation, it comprises a measured switch power supply, a current detecting unit, described current detecting unit is tested the alternating current of described measured switch power supply, also comprises a gauge tap group and a coupled Single-chip Controlling unit;
Described Single-chip Controlling unit comprises an AC sampling port and a direct current sample port, and described AC sampling port is connected with described current detecting unit, and described direct current sample port is connected with described gauge tap group;
Described measured switch power supply comprises four ports, and wherein, AC220V input voltage is connected to L, two of N exchange port, test alternating voltage; DC24V output voltage is connected to V+, two DC port of V-, test DC voltage; Described current detecting unit is connected with described interchange port, the alternating current of described measured switch power supply is tested, current acquisition unit by the current signal transfer gathering to described AC sampling port; Described gauge tap group is connected with described DC port, and DC voltage is transferred in described Single-chip Controlling unit;
Described Single-chip Controlling unit comprises an output port group, and in order to export described DC voltage testing result, the output port arranging on it is corresponding one by one with the gauge tap of described gauge tap group.
Further, described Switching Power Supply proving installation comprises a power module, and described power module one end is connected with described Single-chip Controlling unit, and the other end is connected with described measured switch power supply; It provides an AD12V voltage for described Single-chip Controlling unit.
Further, on the alternating-current measurement circuit of described power module and measured switch power supply, be also provided with a protective resistance, it is subject to described Single-chip Controlling unit controls.
Further, described gauge tap group comprises many group gauge tap, controls the size of sampled voltage, wherein, comprises a short circuiting switch K5, and it makes described measured switch power supply in short-circuit condition.
Further, described Single-chip Controlling is also provided with a control panel on unit, comprises a control knob group on it, comprises startup, stops, single step, pressure regulation disengage button, also comprise all gear shift bit switches, in order to switch the connection of described gauge tap group and output port group.
Further, described Single-chip Controlling unit also comprises a liquid crystal display, in order to the state that shows that proving installation is current, and report test process, show miscue; Also comprise a pilot lamp, it is one group of LED, and it can output alarm signal.
The beneficial effects of the utility model are compared with the prior art: the utility model increases short-circuit protection test on content measurement, and test process all transfers to Automatic control of single chip microcomputer to complete, and after each test completes, by single-chip microcomputer oneself, carries out result judgement; Single-chip microcomputer working power and test circuit power supply are separated, avoid test circuit fault effects to single-chip microcomputer normal operation, improve reliable rows and antijamming capability.In the utility model, adopt gauge tap group and output port group, realize the corresponding output one by one of test result and test voltage, guarantee monolithic processor controlled diversity and continuation, test result is more accurate.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the utility model Switching Power Supply proving installation.
Embodiment
Below in conjunction with accompanying drawing, detailed technology feature of the present utility model is further described, to more clearly understand the utility model.
Refer to shown in Fig. 1; it is the functional block diagram of the utility model Switching Power Supply proving installation; this proving installation comprises a measured switch power supply 1, a current detecting unit 2, a protective resistance 3; alternating current or the voltage of the described measured switch power supply 1 of described current detecting unit 2 test; above-mentioned three connects successively; also comprise a gauge tap group 4 and a coupled Single-chip Controlling unit 5, described gauge tap group 4 is in order to test DC voltage or the electric current of described measured switch power supply 1.
In the utility model, described Single-chip Controlling unit 5 is tested measured switch power supply 1 voluntarily, and result is exported; Described Single-chip Controlling unit 5 comprises an AC sampling port 51, and it is connected with described current detecting unit 2, in order to complete the sampling of single-chip microcomputer to the alternating current of power switch 1 to be measured; Described Single-chip Controlling unit 5 also comprises a direct current sample port 52, and it is connected with described gauge tap group 4, in order to complete the sampling to direct supply in power switch 1 to be measured; In described Single-chip Controlling unit 5, be also provided with an output port group 7, a pilot lamp, a liquid crystal display and a control knob group.
In the present embodiment, described measured switch power supply 1 comprises four ports, and wherein, AC220V input voltage is connected to L, two of N exchange port, test alternating voltage; DC24V output voltage is connected to V+, two DC port of V-, test DC voltage; Described current detecting unit 2 is connected with described interchange port, the alternating current of described measured switch power supply 1 is tested, described current acquisition unit 2 by the current signal transfer gathering to described AC sampling port 51; Described gauge tap group 4 is connected with described DC port, is provided with many group gauge tap in it, controls the size of sampled voltage, and DC voltage is transferred in described Single-chip Controlling unit 5, to carry out the test of many group DC voltage.
In the utility model, described gauge tap group 4 comprises an open switch K1, and it controls described sampled voltage is open-circuit voltage, and whether the open-circuit voltage that detects measured switch power supply 1 is normal; One first loaded switches K2, it is controlled described sampled voltage and is loaded as 60% of ratings; One second loaded switches K3, it is controlled described sampled voltage and is loaded as 80% of ratings; Whether above-mentioned the first loaded switches K2 and the second loaded switches K3 be normal in order to detect the rear voltage of loading and ripple; Whether also comprise one the 3rd loaded switches K4, it is controlled described sampled voltage and is loaded as ratings voltage, normal in order to detect the power of measured switch power supply 1; Also comprise a short circuiting switch K5, it makes described measured switch power supply 1 in short-circuit condition, in order to monitor measured switch power supply, whether has short-circuit protection function.Switch in above-mentioned switches set switches successively, realizes the control of direct current.
Accordingly, on described Single-chip Controlling unit 5, be provided with an output port group 7, the port arranging on it is corresponding one by one with the switch of described gauge tap group 4, when the open switch K1 in described switches set starts, described Single-chip Controlling unit 5 is processed the data that gather and result is exported by corresponding with it K1 port; This output port is provided with K1, the K2 corresponding with described gauge tap group 7, K3, K4 and K5 output port.
In the utility model, adopt gauge tap group and output port group, realize the corresponding output one by one of test result and test voltage, guarantee monolithic processor controlled diversity and continuation, test result is more accurate.
In the utility model, also comprise a power module 6 independently, described power module 6 one end are connected with described Single-chip Controlling unit 5, and the other end is connected with described measured switch power supply 1; In the present embodiment, described power supply is AC 220V, and it is converted into AD12V voltage through a current conversion module and 5 power supplies to described Single-chip Controlling unit.
On the alternating-current measurement circuit of described power module 6 and measured switch power supply, be also provided with a protective resistance 3, described protective resistance 5 is by described Single-chip Controlling unit controls, when carrying out short-circuit protection test, to control described protective resistance 5 and be connected in circuit, it starts short-circuit protection effect; When carrying out loaded switches test, disconnect described protective resistance 5.Described protective resistance 5 is subject to Single-chip Controlling, easy switching; Load the safe operation that protective resistance guarantees system test equipment.In the present embodiment, single-chip microcomputer working power TLE4275 and test circuit power supply LM7805 separate, and avoid test circuit fault effects to single-chip microcomputer normal operation, improve reliable rows and antijamming capability.
On described Single-chip Controlling unit 5, be also provided with a control panel, on it, comprise a control knob group, comprise startup, stop, single step, pressure regulation disengage button, also comprise all gear shift bit switches, in order to switch the connection of described gauge tap group 4 and output port group 7; Described liquid crystal display, in order to the state that shows that proving installation is current, and report test process, show miscue, realize visualized operation, operate simpler; Described pilot lamp, is one group of LED, and after having tested, described pilot lamp output signal, if in test process, occurs bad signal, produces alerting signal.
The utility model increases short-circuit protection test on content measurement, and test process all transfers to Automatic control of single chip microcomputer to complete, and after each test completes, by single-chip microcomputer oneself, carries out result judgement; Single-chip microcomputer working power and test circuit power supply are separated, avoid test circuit fault effects to single-chip microcomputer normal operation, improve reliable rows and antijamming capability.
For referencial use with preferred embodiment above, technical characterictic of the present utility model and effect have been carried out to brief description, the utility model is not limited to above-mentioned embodiment, and within not departing from the scope of the utility model aim, those skilled in the art can do various changes and modification.
Claims (6)
1. a Switching Power Supply proving installation, it is characterized in that, it comprises a measured switch power supply, a current detecting unit, and described current detecting unit is tested the alternating current of described measured switch power supply, also comprises a gauge tap group and a coupled Single-chip Controlling unit; Described Single-chip Controlling unit comprises an AC sampling port and a direct current sample port, and described AC sampling port is connected with described current detecting unit, and described direct current sample port is connected with described gauge tap group; Described measured switch power supply comprises four ports, and wherein, AC220V input voltage is connected to L, two of N exchange port, test alternating voltage; DC24V output voltage is connected to V+, two DC port of V-, test DC voltage; Described current detecting unit is connected with described interchange port, the alternating current of described measured switch power supply is tested, a current acquisition unit by the current signal transfer gathering to described AC sampling port; Described gauge tap group is connected with described DC port, and DC voltage is transferred in described Single-chip Controlling unit; Described Single-chip Controlling unit comprises an output port group, and in order to export described DC voltage testing result, the output port arranging on it is corresponding one by one with the gauge tap of described gauge tap group.
2. Switching Power Supply proving installation according to claim 1, is characterized in that, described Switching Power Supply proving installation comprises a power module, and described power module one end is connected with described Single-chip Controlling unit, and the other end is connected with described measured switch power supply; It provides an AD12V voltage for described Single-chip Controlling unit.
3. Switching Power Supply proving installation according to claim 2, is characterized in that, on the alternating-current measurement circuit of described power module and measured switch power supply, is also provided with a protective resistance, and it is subject to described Single-chip Controlling unit controls.
4. Switching Power Supply proving installation according to claim 1, is characterized in that, described gauge tap group comprises many group gauge tap, controls the size of sampled voltage, wherein, comprises a short circuiting switch K5, and it makes described measured switch power supply in short-circuit condition.
5. Switching Power Supply proving installation according to claim 2, it is characterized in that, described Single-chip Controlling is also provided with a control panel on unit, on it, comprise a control knob group, comprise startup, stop, single step, pressure regulation disengage button, also comprise all gear shift bit switches, in order to switch the connection of described gauge tap group and output port group.
6. Switching Power Supply proving installation according to claim 5, is characterized in that, described Single-chip Controlling unit also comprises a liquid crystal display, in order to the state that shows that proving installation is current, and report test process, show miscue; Also comprise a pilot lamp, it is one group of LED, and it can output alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445584.4U CN203405560U (en) | 2013-07-23 | 2013-07-23 | A switching power supply testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445584.4U CN203405560U (en) | 2013-07-23 | 2013-07-23 | A switching power supply testing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203405560U true CN203405560U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320445584.4U Expired - Fee Related CN203405560U (en) | 2013-07-23 | 2013-07-23 | A switching power supply testing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974332A (en) * | 2016-04-26 | 2016-09-28 | 中煤科工集团重庆研究院有限公司 | Intrinsically safe power source performance dynamic test system |
-
2013
- 2013-07-23 CN CN201320445584.4U patent/CN203405560U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974332A (en) * | 2016-04-26 | 2016-09-28 | 中煤科工集团重庆研究院有限公司 | Intrinsically safe power source performance dynamic test system |
| CN105974332B (en) * | 2016-04-26 | 2019-02-15 | 中煤科工集团重庆研究院有限公司 | Intrinsic safety electric source performance dynamic test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20140723 |
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| EXPY | Termination of patent right or utility model |