CN101545936A - Power supply testing device for USB connection socket - Google Patents
Power supply testing device for USB connection socket Download PDFInfo
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- CN101545936A CN101545936A CN200810088546A CN200810088546A CN101545936A CN 101545936 A CN101545936 A CN 101545936A CN 200810088546 A CN200810088546 A CN 200810088546A CN 200810088546 A CN200810088546 A CN 200810088546A CN 101545936 A CN101545936 A CN 101545936A
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- socket
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- power supply
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Abstract
The invention discloses a power supply testing device for a USB connection socket, which comprises a current detecting unit, a voltage detecting unit and a current control unit. The power supply testing device is electrically connected between a USB connection socket to be tested and a load device to detect the output current and the output voltage of the USB connection socket to be tested through the current detecting unit and the voltage detecting unit and to control the size of the output current through the current control unit, and provides a hardware test environment for testing the power supply capacity of the USB connection socket.
Description
Technical field
The present invention relates to the power supply testing device that a kind of USB connects socket, particularly relate to and be used for USB is connected the power power supply testing device of test jobs of socket.
Background technology
Along with the high speed development of computer technology, universal serial bus (Universal Serial Bus; Hereinafter to be referred as USB) become more a kind of connection socket of present application, most portable electron device such as mobile phone, MP3, digital camera, digital code cameras etc. all connect socket by USB and are connected with computer etc., its advantage is: USB connects the message transmission rate height of socket, and support hot plug, be convenient to carry out fast the operation of data-switching, need restart and detect hardware and can discern and needn't connect socket as tradition, and can have a lot of USB on computer and connect socket and carry out access operation for this computer and external electronic installation, very convenient.
Just, extensively used USB because of connecting socket, it is perfect that the exploitation of USB technology also is tending towards, the for example present connection socket of universal USB2.0 standard, USB more in the past connects socket and promoted tens times more than on data rate, but the relative power demands that connects socket that makes increases, for example, with regard to the more USB formula electronic installation of power consumptions such as portable hard drive, after this USB formula electronic installation is plugged computer, can't satisfy this USB formula electronic installation because the USB of computer connects the electric power that socket provided, thereby the bad phenomenon that this USB formula electronic installation can't operate as normal takes place.
Therefore, for connecting socket, the USB that guarantees computer can provide enough electric power to satisfy the electricity needs of USB formula electronic installation, best mode is before computer dispatches from the factory its USB to be connected socket to carry out the strictness test to guarantee power supply capacity, when for example making the connection socket of the USB2.0 standard of this computer insert load, the USB that tests this computer connects whether the electric current that socket exports is 500 milliamperes, output voltage whether compliant requires or the like test event, but the USB that does not have the testing tool that these a little test events are provided to carry out computer at present connects the power supply test jobs of socket, if only test not only time and effort consuming, the relative production capacity that also can reduce industry by manual type.
In sum, how finding a kind of power supply testing tool that is applied to above-mentioned connection socket, avoid above-mentioned many disadvantages with this, is problem anxious to be solved at present really.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, fundamental purpose of the present invention provides the power supply testing device that a kind of USB connects socket, can be easily USB be connected the socket test of powering, and connects the power efficient of test job of socket to promote USB.
Another purpose of the present invention provides the power supply testing device that a kind of USB connects socket, and it is simple in structure.
A further object of the present invention provides the power supply testing device that a kind of USB connects socket, and it is with low cost, is beneficial to the lifting industrial benefit.
For reaching above-mentioned and other purpose, the invention provides the power supply testing device that a kind of USB connects socket, be used for testing and have electronic installation to be measured that a USB connects socket and connect the power supply situation of the load device of socket having the 2nd USB, wherein, the one USB connects socket and has first power contact and first earthing contact, and the 2nd USB connection socket has the second source contact and second earthing contact, this power supply testing device comprises: input connects socket and output connects socket, is used for respectively electrically connecing putting that a USB connects socket and the 2nd USB connects socket; The current sense unit, the one end is to connect socket by this input to be electrically connected to this first power contact, and the other end of this current sense unit is to connect socket by this output to be electrically connected to this second source contact, be used for detecting a USB and connect the size of current that socket exports the 2nd USB connection socket to, to show this current value; The detecting voltage unit, the one end is electrically connected at the end that this current sense unit is connected with this second source contact, and the other end of this detecting voltage unit links to each other with first earthing contact and second earthing contact, be used for detecting the output voltage size that a USB connects socket, for showing this magnitude of voltage; And current control unit, in parallel with this detecting voltage unit, be used for regulating the output current size that a USB connects socket.
In an embodiment, this input connects socket and output connection socket all has power contact and earthing contact separately, wherein, power contact and earthing contact that this input connects socket supply to electrically connect respectively first power contact and first earthing contact that a USB connects socket, and this output connects the power contact of socket and earthing contact and connects the second source contact and second earthing contact of socket for the 2nd USB that electrically connects this load device respectively, has the USB connection socket that is used for connecting this electronic installation to be measured between socket and output connection socket and is connected the data transmission link that socket is used for transmitting data with the 2nd USB of this load device and should input connect; This current sense unit has a reometer at least, is used for detecting and shows that this USB connects socket and exports the current value that the 2nd USB connects socket to.This detecting voltage unit has a voltage table at least, is used for detecting and showing the output voltage size of USB connection socket; And this current control unit is made up of the adjustable resistance and the switch element of serial connection, wherein, this adjustable resistance is to be used for regulating the output current size that a USB connects socket, and this switch element then is used for opening or closing this adjustable resistance connects socket to a USB output current regulating function; The adjustable resistance of this current control unit has correspondence and flows through the scale gear of its size of current for adjusting in addition, and this current control unit is serially connected with a protective resistance; And it is the connection socket of USB2.0 standard that this first and second USB connects socket, and this standard current value is 500 milliamperes, and this standard voltage value then is 5 volts.
Than prior art, USB provided by the present invention connects the power supply testing device of socket, the USB that is electrically connected at electronic installation to be measured connects between socket and the load device, by the current sense unit, the output voltage that this USB connects socket is detected in the detecting voltage unit, output current etc., whether meet test request for differentiating, simultaneously also provide a current control unit to regulate the size of this output current, make USB connect socket with situation that load device is connected under, a kind of convenience and power supply performance testing tool with low cost are provided, and effectively promote the efficient of test job.
Description of drawings
Fig. 1 is the application synoptic diagram that USB of the present invention connects the power supply testing device of socket;
Fig. 2 is the basic framework synoptic diagram that USB of the present invention connects the power supply testing device of socket;
The main element symbol description:
1 electronic installation to be measured
The one USB of 10 electronic installations to be measured connects socket
100 first power contacts
101 first earthing contacts
2 load devices
The 2nd USB of 20 load devices connects socket
200 second source contacts
201 second earthing contacts
3 USB connect the power supply testing device of socket
30 current sense unit
31 detecting voltage unit
32 current control units
320 adjustable resistances
321 switch elements
33 protective resistances
The 34a input connects socket
34b output connects socket
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention also can be implemented or be used by other different instantiations, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 1, be to show that USB of the present invention connects the application synoptic diagram of the power supply testing device 3 of socket, as shown in the figure, power supply testing device 3 of the present invention is to be used for test jobs is carried out in the power supply that USB connection socket 10 on the electronic installation 1 to be measured is provided, this electronic installation 1 to be measured can for example be a computer, notebook computer etc., the one USB connects socket 10 power supply property accesses one load device 2, meaning i.e. this load device 2 also should have the 2nd USB connection socket 20 that is connected socket 10 corresponding specification with a USB, being electrically connected to aforesaid electronic installation to be measured 1 for this load device 2 (is computer, notebook computer) etc., to carry out the data transmission operation, and, in present embodiment, this load device 2 can for example be common mobile phone, MP3, the 2nd USB whether digital camera or portable hard drive etc., the electric power that connects socket 10 and provided with a USB who judges this electronic installation 1 to be measured by power supply testing device of the present invention can satisfy this load device 2 connects the power consumption requirements of socket 20.
As shown in the figure, the power supply testing device 3 that USB of the present invention connects socket is electrically connected between this USB connection socket 10 to be measured and the load device 2, therefore, in present embodiment, this power supply testing device 3 has input connection socket and the output connection socket (34a and 34b) that the 2nd USB that is connected socket 10 and this load device 2 with a USB of this electronic installation 1 to be measured connects socket 20 corresponding specification, so that the USB connection socket that this electronic installation 1 to be measured and this load device 2 pass through separately electrically connects with this power supply testing device 3 respectively, certainly, this input connects socket and output connects the data transmission link that socket (34a and 34b) has data transmission, so that this electronic installation 1 to be measured that is connected with this power supply testing device 3 and this load device 2 can carry out the data transmission operation mutually.
See also Fig. 2, show that USB of the present invention connects the basic framework block schematic diagram of the power supply testing device 3 of socket, as shown in the figure, power supply testing device 3 of the present invention comprises: this input connects socket 34a, output connects socket 34b, current sense unit 30, detecting voltage unit 31 and current control unit 32.
As previously mentioned, this input connection socket and output connection socket 34a and 34b are used for electrically connecing the 2nd USB connection socket 20 that a USB who puts this electronic installation to be measured connects socket 10 and load device respectively.In present embodiment, this input connects socket and output connects socket 34a and 34b all has power contact and earthing contact separately, wherein, power contact and earthing contact that this input connects socket 34a supply to electrically connect respectively first power contact and first earthing contact (100 and 101) that a USB connects socket 10, and this output connects the second source contact and second earthing contact (200 and 201) of the power contact of socket 34b and the 2nd USB connection socket 20 that earthing contact can electrically connect this load device respectively, certainly also other connected mode can be arranged, non-ly exceed with present embodiment.
One end of this current sense unit 30 is to connect first power contact 100 that socket 34a is electrically connected to the USB connection socket 10 of this electronic installation 1 to be measured by this input, and the other end of this current sense unit 30 is to connect the second source contact 200 that socket 34b is electrically connected at this load device 2 by this output, a USB who is used for detecting this electronic installation to be measured connects the size of current that the 2nd USB that socket 10 exports this load device to connects socket 20, and show whether current value reaches a standard current value for differentiating, what this must propose explanation be, this first power contact 100 and second source contact 200 are the plug contacts that standard USB connects socket, so do not give unnecessary details for literary composition at this.In present embodiment, this current sense unit 30 has a for example reometer at least, common reometer generally is series in the circuit, be used for measuring flow through this circuit electric current and shown that and institute's electric current of surveying is the output current of the USB connection socket 10 of this electronic installation 1 to be measured in present embodiment.
These detecting voltage unit 31 1 ends are electrically connected at an end of this current sense unit 30 and first and second USB of the other end and this is connected first earthing contact and second earthing contact (101 that socket (10,20) is possessed, 201) link to each other, a USB who is used for detecting this electronic installation 1 to be measured connects the output voltage size of socket 10, and whether display voltage reaches a standard voltage value for differentiating.In present embodiment, this detecting voltage unit 31 is a voltage table, as shown in the figure, this detecting voltage unit 31 is to be equivalent to be connected in first power contact and second source contact (100 and 200) and first earthing contact and second earthing contact (the 101 and 201) two ends that a USB connects socket 10 and the 2nd USB connection socket 20 with parallel way, surveying a USB and connect socket 10 output voltages, also is the input voltage of this load device 2.
In present embodiment, it is USB 2.0 standards that a USB connects socket 10, so this standard current value is 500 milliamperes, and this standard voltage value then is 5 volts of the magnitudes of voltage of USB 2.0 standards.
These current control unit 32 cross-over connections are connected with a USB between first earthing contact and second earthing contact (101 and 201) of socket 10 and the 2nd USB connection socket 20 in this current sense unit 30, are used for regulating the output current size that a USB connects socket 10.In present embodiment, this current control unit 32 is made up of the adjustable resistance 320 and the switch element 321 of mutual serial connection, wherein, this adjustable resistance 320 is output current sizes that the USB that is used for regulating this electronic installation 1 to be measured connects socket 10, and this switch element 321 then is used for opening (turn on) or closes the output current regulating function of the USB connection socket 10 of 320 pairs of this electronic installations 1 to be measured of (turn off) this adjustable resistance.In present embodiment, as shown in the figure, this current control unit 32 is to be parallel to this load device 2, that is is parallel to this detecting voltage unit 31; This adjustable resistance 320 has correspondence and flows through the scale gear of its size of current for adjusting, for example " 10 Ω, 100MA " etc., be convenient to quantize test, certainly, under load device 2 changeless situations, if load device 2 changes to some extent, its scale value also needs to be changed thereupon; Secondly, this current control unit 32 is serially connected with a protective resistance 33 again, is used for avoiding when this adjustable resistance 320 is adjusted to too small resistance, may cause the adverse consequences of USB connection socket 10 short circuits of this electronic installation 1 to be measured.
Have again, this switch element 321 can for example be general switching device or on-off circuit etc., select whether to insert this current control unit 32 for the tester, if do not insert, output current, voltage condition when a USB that then also can test this electronic installation 1 to be measured connects socket 10 and only is connected to load.
Than prior art, USB of the present invention connects the power supply testing device of socket, the USB that power supply property is connected in electronic installation to be measured connects between socket and the load device, by a current sense unit, the USB that this electronic installation to be measured is detected in the detecting voltage unit connects the socket output voltage of this moment, output current etc., whether meet test request for differentiating, also provide a current control unit to regulate the size of this output current simultaneously, can connect the mode that provides a kind of power supply performance to test under the situation of socket access load device at USB, and then promote the efficient of test job.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention should be foundation with the scope of claims.
Claims (9)
1, a kind of USB connects the power supply testing device of socket, have electronic installation to be measured that a USB connects socket with Come test and connect the power supply situation of the load device of socket having the 2nd USB, wherein, the one USB connects socket and has first power contact and first earthing contact, and the 2nd USB connection socket has the second source contact and second earthing contact, it is characterized in that this power supply testing device comprises:
Input connects socket and output connects socket, is used for respectively electrically connecing putting that a USB connects socket and the 2nd USB connects socket;
The current sense unit, the one end connects socket by this input and is electrically connected to this first power contact, and the other end of this current sense unit is electrically connected to this second source contact by this output connection socket, be used for detecting a USB and connect the size of current that socket exports the 2nd USB connection socket to, to show this current value;
The detecting voltage unit, the one end is electrically connected at the end that this current sense unit is connected with this second source contact, and the other end of this detecting voltage unit links to each other with first earthing contact and second earthing contact, be used for detecting the output voltage size that a USB connects socket, to show this magnitude of voltage; And
Current control unit, in parallel with this detecting voltage unit, be used for regulating the output current size that a USB connects socket.
2, power supply testing device according to claim 1, it is characterized in that, this input connects socket and output connection socket all has power contact and earthing contact separately, wherein, power contact and earthing contact that this input connects socket supply to electrically connect respectively first power contact and first earthing contact that a USB connects socket, and this output connects the power contact of socket and earthing contact connects socket for the 2nd USB that electrically connects this load device respectively the second source contact and second earthing contact.
3, power supply testing device according to claim 1, it is characterized in that this input connects socket and output and connects and have a USB who is used for connecting this electronic installation to be measured between socket and connect socket is connected the transmission data of socket with the 2nd USB of this load device data transmission link.
4, power supply testing device according to claim 1 is characterized in that, this current sense unit has a reometer at least, is used for detecting and shows that a USB connects socket and exports the current value that the 2nd USB connects socket to.
5, power supply testing device according to claim 1 is characterized in that, the detecting voltage unit has a voltage table at least, is used for detecting and showing the output voltage size of USB connection socket.
6, power supply testing device according to claim 1, it is characterized in that, this current control unit is made up of the adjustable resistance and the switch element of serial connection, wherein, this adjustable resistance is used for regulating the output current size that a USB connects socket, and this switch element then is used for opening or closing this adjustable resistance connects socket to a USB output current regulating function.
7, power supply testing device according to claim 6 is characterized in that, the adjustable resistance of this current control unit has correspondence and flows through the scale gear of its size of current for adjusting.
8, according to claim 6 or 7 described power supply testing devices, it is characterized in that this current control unit is serially connected with a protective resistance.
9, power supply testing device according to claim 1 is characterized in that, it is the connection socket of USB 2.0 standards that this first and second USB connects socket, and this standard current value is 500 milliamperes, and this standard voltage value then is 5 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810088546A CN101545936A (en) | 2008-03-27 | 2008-03-27 | Power supply testing device for USB connection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810088546A CN101545936A (en) | 2008-03-27 | 2008-03-27 | Power supply testing device for USB connection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101545936A true CN101545936A (en) | 2009-09-30 |
Family
ID=41193183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810088546A Pending CN101545936A (en) | 2008-03-27 | 2008-03-27 | Power supply testing device for USB connection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101545936A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540132A (en) * | 2010-12-13 | 2012-07-04 | 北京市电力公司 | Electric energy meter interface testing method and tester |
| CN103970246A (en) * | 2013-02-06 | 2014-08-06 | 联发科技（新加坡）私人有限公司 | Power source management device and power source management method |
| CN104407217A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
| CN105974176A (en) * | 2016-05-03 | 2016-09-28 | 深圳市格劳瑞电子有限公司 | USB Type-C volt ammeter and detection method thereof |
-
2008
- 2008-03-27 CN CN200810088546A patent/CN101545936A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540132A (en) * | 2010-12-13 | 2012-07-04 | 北京市电力公司 | Electric energy meter interface testing method and tester |
| CN103970246A (en) * | 2013-02-06 | 2014-08-06 | 联发科技（新加坡）私人有限公司 | Power source management device and power source management method |
| CN103970246B (en) * | 2013-02-06 | 2016-12-28 | 联发科技（新加坡）私人有限公司 | Electric power controller and method for managing power supply |
| CN104407217A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
| CN104407217B (en) * | 2014-11-05 | 2017-02-15 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
| CN105974176A (en) * | 2016-05-03 | 2016-09-28 | 深圳市格劳瑞电子有限公司 | USB Type-C volt ammeter and detection method thereof |
| CN105974176B (en) * | 2016-05-03 | 2019-03-01 | 深圳市格劳瑞电子有限公司 | A kind of USB Type-C volometer and its detection method |
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Open date: 20090930 |