CN101126781A - USB apparatus power consumption test device - Google Patents
USB apparatus power consumption test device Download PDFInfo
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- CN101126781A CN101126781A CNA2006100622077A CN200610062207A CN101126781A CN 101126781 A CN101126781 A CN 101126781A CN A2006100622077 A CNA2006100622077 A CN A2006100622077A CN 200610062207 A CN200610062207 A CN 200610062207A CN 101126781 A CN101126781 A CN 101126781A
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Abstract
The utility model relates to a power dissipation testing apparatus for USB devices, comprising a first connector and a second connector, wherein the first connector and the second connector are used for connecting with a signal transmitting device and a signal receiving device respectively. The first connector and the second connector comprise at least two signal transmission pins, a voltage pin and a grounding pin respectively, wherein the signal transmission pins of the first connector are electrically connected with the signal transmission pins of the second connector respectively and correspondingly and the grounding pins of the first connector and the second connector are connected with the ground. In addition, the utility model also comprises a voltage port which is electrically connected with the voltage pin of the second connector, while the voltage pin of the first connector is free and the voltage port is used to connect with a visual direct current power supply. By utilizing the power dissipation testing apparatus for USB devices, the precision of power dissipation testing is effectively improved and the power dissipation of USB devices in various modes is tested accurately.
Description
Technical field
The present invention relates to a kind of proving installation, particularly a kind of test all-purpose universal serial bus (Universal Serial Bus, USB) proving installation of equipment power dissipation of being used for.
Background technology
USB is a kind of new interface technology that is applied in computer realm.As far back as nineteen ninety-five, just have computing machine to have USB interface, but owing to lack the support of software and hardware device, these USB interface of computer are all left unused and are not used.After 1998, along with Microsoft's built-in support module to USB interface in windows 98, add day by day increasing of USB device, USB interface has just progressively been come into the practical stage.
In recent years, along with popularizing of the PC of a large amount of support USB, the standard interface that USB progressively becomes PC had been trend of the times.At main frame (host) end, the computing machine of up-to-date release almost 100% is supported USB; And at peripheral hardware (device) end, the equipment of use USB interface also grows with each passing day, for example digital camera, scanner, joystick, tape and floppy drive, vision facilities, printer, keyboard, mouse or the like.
The powering mode of USB device is divided into two kinds: self-powered pattern and bus-powered pattern.The self-powered pattern is to be the USB device power supply by power supply adaptor independently, and bus-powered pattern is that the USB interface by computer provides+the 5V direct current for USB device.To USB power consumption regulation, the maximum rated current of single USB interface is 500uA under suspending mode according to INTEL Corp., and configuration mode (standby mode) is not 100Ma down, and configuration mode (mode of operation) is 500mA down, and maximum load power is 2.5 watts.
Along with the development of various USB device in recent years, the for example appearance of USB device such as USB hot water cup, USB portable hard drive, USB charger for mobile phone, the driving power of USB device strengthens gradually, traditional power that USB interface provided can not satisfy the request for utilization of various high-power USB equipment, causes USB device job insecurity or computer to discern.
Just need accurately to measure the power consumption of USB device this moment, with judge described USB device whether can be under bus-powered pattern operate as normal, and then whether decision is adjusted described USB device power or is provided independent current source for it.
Traditional USB device power consumption test method is the electric current when measuring USB device work by oscillograph and probe, and then obtains its power consumption.Yet this method must use oscillograph and probe to carry out data sampling, and the precision of probe is about 10mA, and precision is lower, influences the precision of test result; Simultaneously, above-mentioned method of testing is to sample on the voltage transmission line, because the voltage signal on the voltage transmission line can be subjected to the influence of transmission signals on the signal transmssion line, thereby influences the precision of test result.
Summary of the invention
In view of above content, be necessary to provide a kind of USB device power consumption test precision that improves, accurately to record USB device produces power consumption under various patterns USB device power consumption test device.
A kind of USB device power consumption test device, it comprises one first connector and one second connector, described first and second connector is used for respectively being connected with a sender unit and a signal receiving device, described first and second connector includes binary signal transmission pin at least, one voltage pin and a grounding pin, the corresponding respectively signal transmission pin with described second connector of the signal transmission pin of described first connector electrically connects, the equal ground connection of the grounding pin of described first and second connector, described USB device power consumption test device also comprises a voltage port, the voltage pin of described first connector is vacant, the voltage pin of described second connector and described voltage port electrically connect, and described voltage port is used for being connected with a visual direct supply.
Compare prior art, it is USB device power supply to be measured that described USB device power consumption test device utilizes visual direct supply, and directly obtains test data, can effectively improve the precision of power consumption test, accurately to record the power consumption that USB device produces under various patterns.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and the specific embodiments.
Fig. 1 is the circuit theory diagrams of the better embodiment of USB device power consumption test device of the present invention.
Embodiment
See also Fig. 1, the better embodiment of USB device power consumption test device 10 of the present invention comprises one first connector 12, one second connector 14 and a voltage port V+, described first and second connector 12 and 14 is USB connector, described first and second connector 12 and 14 includes two signals transmission pin D+ and D-, an one voltage pin VCC and a grounding pin GND, corresponding respectively signal transmission pin D+ and the D-with described second connector 14 of the signal transmission pin D+ of described first connector 12 and D-electrically connects, the voltage pin VCC of described first connector 12 is vacant, the voltage pin VCC of described second connector 14 and described voltage port V+ electrically connect, described first and second connector 12 and 14 the equal ground connection of grounding pin GND.
Described first and second connector 12 and 14 signal transmission pin are not limited to a pair of, also can be two or three pairs of etc.
Described first connector 12 is connected with the USB interface of a computer; Described second connector 14 is connected with the USB interface of a USB device; The voltage output end of a described voltage port V+ and a visual direct supply electrically connects.
Described first connector 12 also can be connected with the sender unit that notebook computer or server etc. has a USB interface; Described second connector 14 also can be connected with the signal receiving device that keyboard or mouse etc. has a USB interface.
When carrying out power consumption test, adjusting visual direct supply makes its output voltage be+5V, adjusting described USB device is under the different modes such as mode of operation or standby mode it respectively, and the output current numerical value that described visual direct supply shows under the record different mode, by this, can obtain the power consumption number of USB device under different mode.
In like manner, adjust direct supply make its be output as+4.75V or+5.25V, can record USB device on the voltage/power consumption that produces under the lower critical condition.
Because visual direct supply precision is higher, its precision can reach 0.1mA, and described first and second connector 12 is not connected with 14 voltage pin VCC simultaneously, has reduced on the signal transmssion line transmission signals to the influence of voltage signal.
Therefore, use described USB device power consumption test device 10 can effectively improve measuring accuracy, accurately record the power consumption of USB device under various patterns.
Claims (1)
1. USB device power consumption test device, it comprises one first connector and one second connector, described first and second connector is used for respectively being connected with a sender unit and a signal receiving device, described first and second connector includes binary signal transmission pin at least, one voltage pin and a grounding pin, the corresponding respectively signal transmission pin with described second connector of the signal transmission pin of described first connector electrically connects, the equal ground connection of the grounding pin of described first and second connector, it is characterized in that: described USB device power consumption test device also comprises a voltage port, the voltage pin of described first connector is vacant, the voltage pin of described second connector and described voltage port electrically connect, and described voltage port is used for being connected with a visual direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100622077A CN101126781B (en) | 2006-08-18 | 2006-08-18 | USB apparatus power consumption test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100622077A CN101126781B (en) | 2006-08-18 | 2006-08-18 | USB apparatus power consumption test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101126781A true CN101126781A (en) | 2008-02-20 |
| CN101126781B CN101126781B (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100622077A Expired - Fee Related CN101126781B (en) | 2006-08-18 | 2006-08-18 | USB apparatus power consumption test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101126781B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872760A (en) * | 2017-02-28 | 2017-06-20 | 上海传英信息技术有限公司 | USB current measuring devices and measuring method |
| WO2017190474A1 (en) * | 2016-05-06 | 2017-11-09 | 中兴通讯股份有限公司 | Power supply method and apparatus |
| CN109116090A (en) * | 2017-06-23 | 2019-01-01 | 致伸科技股份有限公司 | Current/voltage measurement system and its method |
| CN111257631A (en) * | 2020-01-16 | 2020-06-09 | 支付宝(杭州)信息技术有限公司 | Terminal equipment power consumption measuring system and method |
-
2006
- 2006-08-18 CN CN2006100622077A patent/CN101126781B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190474A1 (en) * | 2016-05-06 | 2017-11-09 | 中兴通讯股份有限公司 | Power supply method and apparatus |
| CN106872760A (en) * | 2017-02-28 | 2017-06-20 | 上海传英信息技术有限公司 | USB current measuring devices and measuring method |
| CN109116090A (en) * | 2017-06-23 | 2019-01-01 | 致伸科技股份有限公司 | Current/voltage measurement system and its method |
| CN111257631A (en) * | 2020-01-16 | 2020-06-09 | 支付宝(杭州)信息技术有限公司 | Terminal equipment power consumption measuring system and method |
| CN111257631B (en) * | 2020-01-16 | 2022-05-06 | 支付宝(杭州)信息技术有限公司 | Terminal equipment power consumption measuring system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101126781B (en) | 2010-11-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20130818 |