CN102820773A

CN102820773A - Power supply device for test

Info

Publication number: CN102820773A
Application number: CN 201110155729
Authority: CN
Inventors: 张万宏; 曹朝杰
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2012-12-12

Abstract

Disclosed is a power supply device for test. The device is used for supplying power to an assembly to be tested. The device comprises a universal serial bus (USB) connector, a voltage conversion module, an output control module and an output port, wherein the USB connected to a mainframe which is used for test and obtains power from the mainframe, the voltage conversion module is used for converting the electrical energy obtained by the USB connector to some unequal voltage which is required by test, the output port supplies the power to the assembly to be tested, and the output control module is connected to the mainframe and the output port and is used for selecting whether the output port is controlled automatically to supply the power to the assembly to be tested or to stop to supply the power to the assembly to be tested under the control of the mainframe.

Description

Power supply device for test

Technical field

The present invention relates to a kind of supply unit, relate in particular to a kind of supply unit that is used for the testing host attachment component.

Background technology

In the production of electronic installations such as computer, except needs carry out quality test to mainboard, some attachment components such as solid state hard disc that are connected with mainboard also need carry out quality test.Generally speaking; The power parameter of these attachment components is different from mainboard; The power supply that can not directly use mainboard is as testing power supply, but need special-purpose testing power supply be set for it, or supplies it to use as test voltage again after using the voltage adjustment of transformer with motherboard power supply.Obviously, above-mentioned way all can increase testing cost, and the work of installation special test power supply or transformer also can reduce testing efficiency.

Summary of the invention

In view of this, be necessary to provide a kind of cost lower, and can increase the supply unit that is used for the testing host attachment component of testing efficiency.

A kind of power supply device for test; In order to testing component is supplied power; It comprises USB connector, voltage transformation module, output control module and output port, and said USB connector is connected to the main frame of test usefulness, to obtain power supply from main frame; The electric energy that voltage transformation module obtains USB connector converts the required some voltages that do not wait of test to; To pass through output port to assembly power supply to be measured, said output control module is connected to main frame and output port, in order to automatic control output end mouth under the control that is chosen in main frame assembly power supply to be measured is perhaps stopped output port to assembly power supply to be measured.

Compared with prior art; Power supply device for test of the present invention directly obtains power supply from existing Test Host; And with the satisfied a plurality of different voltages that have testing requirement now of this power source conversion one-tenth; Cooperate main frame to control said a plurality of voltages automatically through output control module again, realize behind the EOT stopping power supply automatically, not only need not special-purpose testing power supply or the transformer of use in addition testing component through output port output; And it is higher to cooperate Test Host to improve the automaticity efficient of testing, and uses more convenient.

Description of drawings

The theory diagram of the power supply device for test that Fig. 1 provides for embodiment of the present invention;

The main element symbol description

Power supply device for test	100
		USB connector	10
Voltage transformation module	30
		Boost module	31
The step-down module	33
		Output control module	50
Communication interface	51
		Single-chip microcomputer	53
Relay	55
		Relay module	551
Hand switch	57
		Output port	70
Main frame	90
		USB interface	91

Following embodiment will combine above-mentioned accompanying drawing to further specify the present invention.

Embodiment

To combine accompanying drawing below, the present invention will be done further detailed description.

See also Fig. 1, the power supply device for test 100 of preferred embodiments of the present invention has some USB connector 10, voltage transformation module 30, output control module 50 and output port 70.Said USB connector 10 is connected to the USB interface 91 of an existing main frame 90 with this power supply device for test 100, to obtain power supply from main frame 90.Said voltage transformation module 30 will become a plurality of different voltages with different from the power source conversion that main frame 90 inserts; And export output port 70 to through the relays 55 in the output control module 50; Can pass through 70 pairs of assembly power supplies to be measured of output port, to satisfy the need for electricity of different testing components.Said output control module 50 can be connected to main frame 90, with conducting and disconnection through the program control relay 55 established in the main frame 90, and can each output port 70 out-put supply of corresponding control.In embodiment of the present invention, be that example describes so that 5V, 12V, 3.3V and 1.8V voltage to testing component to be provided through this power supply device for test 100.

The setting that is in parallel of said some USB connectors 10 is in order to insert a 5V power supply from main frame 90.This USB connector 10 is connected to voltage transformation module 30 and relay 55; With through this relay 55 outputs one 5V power supply to one of them output port 70, perhaps convert the output port 70 that exports other behind 12V, 3.3V or the 1.8V again through this relay 55 to through voltage transformation module 30.In embodiment of the present invention; The number of said USB connector 10 is four; Each USB connector 10 is connected to a USB interface 91 of main frame 90 respectively; Can obtain the power supply (each USB interface 91 only can provide 5V, 500mA power supply usually) of 5V, 2A from main frame 90 through these four USB connectors 10, to satisfy the bigger demand of the required electric current of indivedual testing components.

Voltage transformation module 30 1 ends are connected to USB connector 10; The other end is connected to relay 55; In order to becoming 12V, 3.3V and four gears of 1.8V from the 5V voltage transitions that main frame 90 inserts, relay 55 and the output port 70 through conducting is delivered to testing component again.This voltage transformation module 30 comprises boost module 31 and step-down module 33, and boost module 31 is in order to arrive 12V with the 5V boost in voltage that inserts, and step-down module 33 is in order to be low to moderate 3.3V and 1.8V with the 5V voltage drop.

Output control module 50 comprises communication interface 51, single-chip microcomputer 53 and the relay 55 that connects successively; Said relay 55 is connected between output port 70 and the voltage transformation module 30, is sent to output port 70 and to assembly power supply to be measured in order to the voltage of control voltage transformation module 30 output.Said communication interface 51 make the program of setting in the single-chip microcomputer 53 operation main frames 90, thereby the conducting of control relay 55 is come control output end mouth 70 output voltages in order to single-chip microcomputer 53 is connected to main frame 90.In embodiment of the present invention, said communication interface 51 is a serial ports.Said single-chip microcomputer 53 connects through I/O mouth on it and relay 55, with the conducting of control relay 55 inside.Relay 55 can be controlled the relay of the output voltage of all output ports 70 for together the time; Also can comprise the relay module 551 that each output port of some correspondences 70 is provided with, and control whether output voltage of each output port 70 through the conducting of single-chip microcomputer 53 each relay module 551 of control.

Output port 70 is connected to relay 55, and its number is corresponding with these power supply device for test 100 available different magnitudes of voltage.Only when relay 55 conductings, the voltage after voltage transformation module 30 conversions just can export testing component to through output port 70 to said output port 70.Therefore, in embodiment of the present invention, this output port 70 is four, and respectively in order to output 5V, 12V, 3.3V and 1.8V voltage, testing component obtains correspondent voltage through being connected to corresponding output port 70.In addition, said relay 55 is opened or conducting under the control of single-chip microcomputer 53 automatically, and the automatic output voltage of corresponding implementation perhaps stops output voltage to the testing component that is connected to output port 70 to the testing component that is connected to output port 70.

Said main frame 90 is data processing equipments such as an existing computer, and it also comprises draw-in groove 93 except comprising above-mentioned USB interface 91.Said USB interface 91 is connected to the USB connector 10 of power supply device for test 100 and power supply to said power supply device for test 100 is provided.Said draw-in groove 93 is connected to communication interface 51, in order to control the voltage of these power supply device for test 100 outputs of output control module 50 controls automatically through main frame 90.In embodiment of the present invention, this main frame 90 is preferably the Test Host of test testing component, establishes the test program that a pair of testing component is tested in it; When the tester does not open test program; Output control module 50 will stop output port 70 output voltages, and only when the tester has started test program and tests, said main frame 90 just passes through the conducting of single-chip microcomputer 53 control relays 55; Thereby control each output port 70 output voltage, with test that testing component is supplied power.After the end to be tested, main frame 90 breaks off relays 55 with automatic control single chip computer 53, stopping 70 pairs of assembly power supplies to be measured of each output port, thereby realizes the automation of test.

When using 100 pairs of this power supply device for test assembly power supply to be measured, may further comprise the steps:

At first, USB connector 10 is connected to the USB interface 91 of main frame 90, to obtain the 5V power supply from main frame.At this moment; The 5V power unit that obtains is delivered directly to relay 55; Part is transported to relay 55 after boosting to 12V through boost module 31; After part then is depressured to 3.3V and 1.8V respectively through step-down module 33, be transported to relay 55, supply power to testing component with each output port 70 of conducting realization through relay 55.

Then, testing component is connected to corresponding output port 70, makes the voltage conforms testing component required voltage of these output port 70 predetermined outputs.

At last, communication interface 51 is connected to the draw-in groove (figure do not show) of main frame 90,, realizes each output port 70 output voltage with the conducting that triggers single-chip microcomputers 53 control relays 55 through main frame 90 so that single-chip microcomputer 53 is connected to main frame 90.In embodiment of the present invention, during the test program in the tester moves main frame 90, set, single-chip microcomputer 53 makes each output port 70 output voltage to the testing component that is connected to this port control relay 55 conductings; Behind the EOT, said single-chip microcomputer 53 stops control relay 55 disconnections the power supply of 70 pairs of testing components of each output port.Be appreciated that; When said relay 55 comprises the relay module 551 of the corresponding output port of some difference 70 settings; Said main frame 90 can trigger single-chip microcomputer 53 according to the testing component required voltage and only control corresponding relay module 551 conductings; Make testing component prevent that effectively misoperation is connected to high voltage and damages testing component from obtaining corresponding voltage with these relay module 551 corresponding output ports 70.

Be appreciated that said output control module 50 also comprises the hand switch 57 that is connected to relay 55, in order to the conducting and the disconnection of manual triggers relay 55, with 70 pairs of assembly power supplies to be measured of corresponding control output end mouth.If said relay 55 is that then said hand switch 57 can correspondence be set to four by four independent relay module 551 that are provided with, with the corresponding relay module 551 of difference start.

Power supply device for test 100 of the present invention; It directly obtains power supply from the main frame 90 of existing test; And this power source conversion become to satisfy a plurality of different voltages of existing testing requirement, again through output control module 50 cooperate main frames 90 automatically the said a plurality of voltages of control realize stopping automatically power supply behind the EOT through output port 70 outputs to testing component; Not only need not to use in addition special-purpose testing power supply and transformer; And can cooperate Test Host 90 to increase the automated procedures of test, efficient is higher, uses more convenient.

In addition, those skilled in the art can do other variation in spirit of the present invention, and still, all variations of doing according to spirit of the present invention all should be included within the present invention's scope required for protection.

Claims

1. power supply device for test; In order to testing component is supplied power; It comprises USB connector and output port; Said USB connector is connected to the main frame of test usefulness, and to obtain power supply from main frame, output port exports testing component in order to the voltage that power supply device for test is provided; It is characterized in that: said power supply device for test also comprises voltage transformation module and output control module; The electric energy that voltage transformation module obtains USB connector converts the required some different voltages of test to, and said output control module is connected to main frame and output port, in order to automatic control output end mouth under the control that is chosen in main frame assembly power supply to be measured is perhaps stopped output port to assembly power supply to be measured.

2. power supply device for test as claimed in claim 1 is characterized in that: the number of said output port and this power supply device for test are supplied to the quantity of different voltages of testing component suitable, in order to export different voltages respectively.

3. power supply device for test as claimed in claim 1 is characterized in that: said voltage transformation module comprises boost module and step-down module, and this boost module and step-down module all become preset test voltage in order to the voltage transitions that USB connector is inserted.

4. power supply device for test as claimed in claim 1 is characterized in that: said USB connector is at least two, and the USB interface that is connected to main frame that this USB connector is in parallel and is provided with is to obtain bigger electric current.

5. power supply device for test as claimed in claim 1 is characterized in that: said output control module comprises communication interface, and said output control module is set up communicating by letter of this output control module and main frame through communication interface.

6. power supply device for test as claimed in claim 4; It is characterized in that: said output control module also comprises single-chip microcomputer and the relay that is connected to single-chip microcomputer; Said relay is connected between voltage transformation module and the output port; Said single-chip microcomputer is connected to main frame through communication interface, with under the control of main frame through the conducting of control relay, each output port of corresponding control is to the power supply and the outage of testing component.

7. power supply device for test as claimed in claim 6; It is characterized in that: said output control module also comprises the hand switch that is connected to relay; In order to select conducting, realize that manual control output end mouth perhaps stops output port to assembly power supply to be measured to assembly power supply to be measured through the manual control relay of hand switch.

8. power supply device for test as claimed in claim 6; It is characterized in that: said relay comprises some relay module that are connected to single-chip microcomputer; Each relay module is electrically connected between an output port and the voltage transformation module; The conducting of said each relay module of Single-chip Controlling, with this power supply device for test of corresponding control through with the corresponding voltage of the corresponding output port of the relay of this conducting output.

9. power supply device for test as claimed in claim 6; It is characterized in that: said main frame for the test testing component Test Host, in establish test program, when the tester starts said test program; This main frame triggers the conducting of Single-chip Controlling relay, makes output port to assembly power supply to be measured; During EOT, single-chip microcomputer breaks off relay, and output port is stopped assembly power supply to be measured.