CN105487955B - The test method of measurement jig and C type USB ports - Google Patents
The test method of measurement jig and C type USB ports Download PDFInfo
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- CN105487955B CN105487955B CN201510824611.2A CN201510824611A CN105487955B CN 105487955 B CN105487955 B CN 105487955B CN 201510824611 A CN201510824611 A CN 201510824611A CN 105487955 B CN105487955 B CN 105487955B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/267—Reconfiguring circuits for testing, e.g. LSSD, partitioning
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Abstract
The present invention provides a kind of test method of measurement jig and C type USB ports, to test the port of electronic device, port is configured to be electrically connected a C type USB plugs, the plug switches universal input/output signal, the plug is set to be in the first input/output state or the second input/output state, port includes first connecting portion and second connecting portion, and the plug configuration is electrically connected to be inserted into the front of port and reverse side.Measurement jig includes selection key signal and test module.Selection key signal is electrically connected the plug, and configures to switch universal input/output signal.Test module is correspondingly electrically connected first connecting portion or second connecting portion and transmits test signal according to the first input/output state or the second input/output state of the plug.The present invention, which can realize, need to only plug once, just reach the function for the positive anti-plug for testing plug insertion port at the same time.
Description
Technical field
The present invention is on a kind of measurement jig and test method, and in particular to a kind of measurement jig and C types
Universal Serial Bus (Universal Serial Bus Type C；USB Type C) port test method.
Background technology
With development scientific and technological now, various electronic products for example desktop computer, laptop, tablet PC,
External connected hand disk or USB flash disk etc., the life having become with people are closely bound up.
Application various electronic products while, substantial amounts of data file also thus produce, and numerous electronic products it
Between transmit data file mode in, Universal Serial Bus (Universal Serial Bus Type C；USB Type C)
Using especially extensively, therefore, the continuous improvement of Universal Serial Bus in design, is the important directions that industry develops.
The change of new Type C connectors and existing Type-A/B, Mini-A/B, Micro-A/B connector maximums of USB
It is that connector and interface are no longer directional, supports all pluggable function of positive and negative, user will no longer be required to differentiate positive and negative,
Easily interface is inserted into.
However, at present production line test Type C-terminals mouth whether 2.0 device of compatibility USB 3.0 or USB connector when,
Need positive and negative plug twice, the inconvenience be easy to causeing on test jobs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of measurement jig and C type USB port
Test method, it can be in the case where keeping C types USB plug insertion port, to C type Universal Serial Bus
Plug front and the connection of reverse side are tested.
According to an embodiment of the present invention, a kind of measurement jig, to test the port of electronic device, port configuration
To be electrically connected C types Universal Serial Bus (Universal Serial Bus Type C；USB Type C) plug, the C classes
Type USB plug utilizes switching regulator integrated circuit (Switch Integrated Circuit；Switch IC) cut
Universal input/output signal is changed, the C types USB plug is in the first input/output state or the second input
Output state, port include opposite first connecting portion and second connecting portion, correspond to the first input/output state and second respectively
Input/output state, to be electrically connected front and the reverse side that C type USB plugs are configured for insertion into port；Test is controlled
Tool includes selection key signal and test module；Selection key signal is electrically connected C type USB plugs, and configures to cut
Change universal input/output signal；Test module is according to the first input/output state of C type USB plugs or
Two input/output states, are correspondingly electrically connected first connecting portion or second connecting portion and transmit test signal.
In one or more embodiments of the invention, above-mentioned test module includes test cell and power-off unit；Test
Unit is configured with testing to first connecting portion or one of transmission test signal of second connecting portion；Power-off unit configures
To disconnect another electric connection with test module of first connecting portion or second connecting portion in testing.
In one or more embodiments of the invention, above-mentioned test module also includes control unit；This control unit with
Selection key signal is electrically connected, and is configured so that after test, control signal is provided to selection key signal, universal to switch
Input/output signal.
Another embodiment according to the present invention, a kind of test method of C types USB port, its middle port
To be electrically connected C type USB plugs, C types USB plug utilizes switching regulator integrated circuit for configuration
(Switch Integrated Circuit；Switch IC) switch universal input/output signal, make the general string of C types
Row bus plug is in the first input/output state or the second input/output state, and port includes opposite first connecting portion and the
Two connecting portions, correspond to the first input/output state and the second input/output state respectively, total to be electrically connected C type general serials
Line plug configuration is to be inserted into the front of port and reverse side；The test method is comprised the steps of (it will be understood that in present embodiment
Mentioned in the step of, in addition to its bright order person is especially chatted, can according to be actually needed adjust its tandem, or even can at the same time or
Part performs at the same time)：
(1) universal input/output signal is switched；And
(2) according to the first input/output state or the second input/output state, this is correspondingly electrically connected with test module
First connecting portion or the second connecting portion simultaneously transmit test signal.
In one or more of the invention embodiments, above-mentioned electric connection first connecting portion or second connecting portion are simultaneously transmitted
The step of test signal, includes：
(2.1) in testing to first connecting portion or one of transmission test signal of second connecting portion；And
(2.2) another of disconnection first connecting portion or second connecting portion connect with the electrical of test module in testing
Connect.
In one or more of the invention embodiments, the step of above-mentioned switching universal input/output signal, includes：
(1.1) after test, control signal is provided to selection key signal, to switch universal input/output signal.
The above embodiment of the present invention at least has the following advantages compared with known prior art：Lead to keeping C types
In the case of being inserted into port with serial bus plug, test module can first heel end mouth first connecting portion and second connecting portion electricity
Property connection, tested with the electric connection to C types USB plug and electronic device, therefore, user need not
During test, for C types USB plug to be tested front and the connection of reverse side, and the general string of C types
Row bus plug is extracted from port and again insertable into therefore, C types USB plug is electrically connected with electronic device
Test simply can be carried out easily and efficiently, it is possible to achieve need to only be plugged once, just be reached the test general string of C types at the same time
The function of the positive anti-plug of row bus plug insertion port.
Brief description of the drawings
Fig. 1 shows the functional block diagram of the measurement jig according to an embodiment of the present invention.
100：Measurement jig
110：Selection key signal
120：Test module
121：Test cell
122：Power-off unit
123：Control unit
200：Electronic device
210：Port
211：First connecting portion
212：Second connecting portion
300：C type USB plugs
Embodiment
A plurality of embodiments of the present invention will be disclosed with schema below, it is as clearly stated, thin in many practices
Section will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.
That is in some embodiments of the present invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema,
Some known usual structures will be represented in a manner of simply illustrating in the drawings with component.
Unless otherwise defined, all vocabulary (including technical and scientific term) used herein have its common meaning
Contain, its meaning system can be familiar with this field person and be understood.Further, above-mentioned vocabulary is in universal common dictionary
Definition, the consistent meaning in field related to the present invention should be read as in the content of this specification.Unless there are especially clear and definite
Definition, these vocabulary will not be interpreted Utopian or overly formal meaning.
Fig. 1 is refer to, it represents the functional block diagram of the measurement jig 100 according to an embodiment of the present invention.Such as Fig. 1 institutes
Show, to test the port 210 of electronic device 200, port 210 configures general to be electrically connected C types a kind of measurement jig 100
Universal serial bus (Universal Serial Bus Type C；USB Type C) plug 300, C type USB plugs
300 utilize switching regulator integrated circuit (Switch Integrated Circuit；Switch IC) come switch it is universal input/it is defeated
Go out (General Purpose Input/Output；GPIO) signal, makes C types USB plug 300 be in first
Input/output state or the second input/output state, port 210 include opposite first connecting portion 211 and second connecting portion 212,
First connecting portion 211 and second connecting portion 212 corresponding first input/output state and the second input/output state respectively, with electrical
Connection C types USB plug 300 is configured for insertion into front and reverse side (not shown front and the reverse side) of port 210.
Measurement jig 100 includes selection key signal 110 and test module 120.Selection key signal 110 is electrically connected C type general serials
Bus plug 300, and configure to switch universal input/output signal.Test module 120 is according to C type Universal Serial Bus
The first input/output state or the second input/output state of plug 300, are correspondingly electrically connected first connecting portion 211 or the second
Connecting portion 212 simultaneously transmits test signal.
In actual application, C types USB plug 300 can be USB3.0Type C or USB 3.1Type
C, and the front that C types USB plug 300 is configured for insertion into port 210 is of the same size with reverse side, i.e. C classes
Type USB plug 300 can be inserted into the port 210 of electronic device 200 with front or back, and the first of port 210 connects
Socket part 211 and second connecting portion 212, correspond to front and the reverse side of C types USB plug 300, so that C types respectively
USB plug 300 can be electrically connected with electronic device 200.
In testing, C types USB plug 300 is inserted into the port 210 of electronic device 200, so that electronics fills
200 are put to be electrically connected with C types USB plug 300.As described above, port 210 includes opposite first connecting portion
211 with second connecting portion 212.At this time, test module 120 is first defeated according at C types USB plug 300
Enter output state and the second input/output state, be correspondingly electrically connected the first connecting portion 211 or second connecting portion of port 210
212 and transmit test signal.In actual application, C types USB plug 300 utilizes switching regulator integrated circuit
(Switch Integrated Circuit；Switch IC) switch universal input/output signal, and universal input/
State of the signal definition C types USB plug 300 in the first input/output state or the second input and output is exported,
For example, the first input/output state of C types USB plug 300 can be set respectively with the second input/output state
It is set to height (High；) or low (Low HI；LO), when C types USB plug 300 is switched to the first input and output shape
State, that is, when being in the state of high (HI), test module 120 is electrically connected with first connecting portion 211, and carries out signal transmission
Various tests, after test, C types USB plug 300 is switched to the second input/output state, that is, is in
The state of low (LO), at this time, the electric connection of test module 120 and first connecting portion 211 disconnect, and test module 120 and the
Two connecting portions 212 are electrically connected, and carry out the various tests of signal transmission.
Consequently, it is possible to during test, in the feelings for keeping C types USB plug 300 to be inserted into port 210
Under condition, test module 120 can first heel end mouth 210 first connecting portion 211 and second connecting portion 212 be electrically connected, with to C classes
Type USB plug 300 and the electric connection of electronic device 200 are tested.That is, user need not survey
During examination, to test the above-mentioned front of C types USB plug 300 and the connection of reverse side, and C types is general
Serial bus plug 300 is extracted from port 210 and again insertable into therefore, C types USB plug 300 is filled with electronics
Putting the test of 200 electric connections simply can easily and efficiently carry out, it is possible to achieve need to only plug once, just reach at the same time
Test the function that C types USB plug 300 is inserted into the positive anti-plug of port 210.
In actual application, electronic device 200 can be desktop computer, laptop, tablet PC, circumscribed
Hard disk or Portable disk etc., but the present invention is not limited thereto.
More specifically, as shown in Figure 1, test module 120 includes test cell 121 and power-off unit 122.Test cell
121 configurations are powered off with testing to first connecting portion 211 or one of transmission test signal of second connecting portion 212
Unit 122 is then configured to disconnect another and test module of first connecting portion 211 or second connecting portion 212 in testing
120 electric connection.
To improve the testing efficiency that C types USB plug 300 is electrically connected with electronic device 200, mould is tested
Block 120 also includes control unit 123.Control unit 123 is electrically connected with selection key signal 110, and is configured to terminate in test
Afterwards, control signal is provided to selection key signal 110, to switch the universal input of C types USB plug 300/defeated
Go out signal.
Specifically, when C types USB plug 300 is switched to the first input/output state, i.e., in height
(HI) during state, test module 120 is electrically connected with first connecting portion 211, and carries out the various tests of signal transmission, when
After test, test module 120 will provide control signal to selection key signal 110, or assign instruction (Command), make
C types USB plug 300 is switched to the second input/output state by selection key signal 110, i.e., in low (LO)
State, at this time, test module 120 and the electric connection of first connecting portion 211 disconnect, and test module 120 and second connecting portion
212 are electrically connected, and carry out the various tests of signal transmission.Consequently, it is possible to C types USB plug 300 and electricity
The test that sub-device 200 is electrically connected will have more efficiency.
On the other hand, another technical solution of the invention is the test method of C type USB ports, this test
Method comprises the steps of (it will be understood that mentioned step in the present embodiment, in addition to its bright order person is especially chatted,
Its tandem can be adjusted according to being actually needed, or even can simultaneously or partially performed at the same time)：
(1) the universal input/output signal of C types USB plug 300 is switched；And
(2) according to the first input/output state or the second input/output state, correspondingly it is electrically connected with test module 120
First connecting portion 211 or second connecting portion 212 simultaneously transmit test signal.
Specifically, above-mentioned electric connection first connecting portion 211 or second connecting portion 212 and the step of transmit test signal
(2) include：
(2.1) in testing to first connecting portion 211 or one of transmission test signal of second connecting portion 212；With
And
(2.2) another and test module 120 of first connecting portion 211 or second connecting portion 212 are disconnected in testing
Electric connection.
Furthermore to improve the testing efficiency that C types USB plug 300 is electrically connected with electronic device 200, on
State the step of switching universal input/output signal and further include sub-step：
(1.1) after test, control signal is provided to selection key signal 110, is believed with switching universal input/output
Number.
In conclusion technical scheme has clear advantage and beneficial effect compared with prior art.Pass through
Above-mentioned technical proposal, can reach suitable technological progress, and with the extensive utility value in industry, it at least has following excellent
Point：In the case where keeping C types USB plug insertion port, test module can first heel end mouth the first connection
Portion and second connecting portion are electrically connected, and are tested with the electric connection to C types USB plug and electronic device,
Therefore, user need not during test, for C types USB plug to be tested front and the connection of reverse side,
And C types USB plug from port extract and again insertable into, therefore, C types USB plug with electricity
The test that sub-device is electrically connected simply can be carried out easily and efficiently, it is possible to achieve need to only be plugged once, just be reached at the same time
To the function of the positive anti-plug of test C types USB plug insertion port.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any to be familiar with this technology
Personnel, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention
When subject to appended claims institute defender.
Claims (6)
1. a kind of measurement jig, it is characterised in that to test the Single port of an electronic device, which configures to be electrically connected
One C type USB plugs, it is logical which switches one using a switching regulator integrated circuit
With type input/output signal, the C types USB plug is set to be in one first input/output state or one second input
Output state, the port include opposite a first connecting portion and a second connecting portion, correspond to first input and output respectively
State and second input/output state, the port is configured for insertion into be electrically connected the C type USB plugs
One front and a reverse side, the measurement jig include：
One selection key signal, is electrically connected the C type USB plugs, and configures to switch the universal input/defeated
Go out signal；And
One test module, it is defeated according to first input/output state of the C type USB plugs or second input
Do well, be correspondingly electrically connected the first connecting portion or the second connecting portion and transmit a test signal.
2. measurement jig as claimed in claim 1, it is characterised in that wherein the test module includes：
One test cell, configure with a test to the first connecting portion or one of transmission of second connecting portion survey
Trial signal；And
One power-off unit, configures to break another and the survey of the first connecting portion or the second connecting portion in the test
The electric connection of die trial block.
3. measurement jig as claimed in claim 2, it is characterised in that wherein the test module also includes：
One control unit, is electrically connected with the selection key signal, and control unit configuration is with after the test, to the signal
Selection key provides a control signal, to switch the universal input/output signal.
4. a kind of test method of C types USB port, it is characterised in that wherein Single port is configured to be electrically connected
One C type USB plugs, it is general which switches one using switching regulator integrated circuit
Type input/output signal, make the C types USB plug be in one first input/output state or one second input it is defeated
Do well, which includes opposite a first connecting portion and a second connecting portion, corresponds to the first input and output shape respectively
State and second input/output state, the one of the port is configured for insertion into be electrically connected the C type USB plugs
Front and a reverse side, the test method comprise the steps of：
Switch the universal input/output signal；And
According to first input/output state or second input/output state, with a test module be correspondingly electrically connected this
One connecting portion or the second connecting portion simultaneously transmit a test signal.
5. the test method of C types USB port as claimed in claim 4, it is characterised in that wherein electrically connect
Connect the first connecting portion or the second connecting portion and included the step of transmitting the test signal：
To the first connecting portion or one of transmission of second connecting portion test signal in a test；And
Another electric connection with the test module of the first connecting portion or the second connecting portion is broken in the test.
6. the test method of C types USB port as claimed in claim 5, it is characterised in that wherein switching should
The step of universal input/output signal, includes：
After the test, a control signal is provided to a selection key signal, to switch the universal input/output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824611.2A CN105487955B (en) | 2015-11-24 | 2015-11-24 | The test method of measurement jig and C type USB ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824611.2A CN105487955B (en) | 2015-11-24 | 2015-11-24 | The test method of measurement jig and C type USB ports |
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| Publication Number | Publication Date |
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| CN105487955A CN105487955A (en) | 2016-04-13 |
| CN105487955B true CN105487955B (en) | 2018-05-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201814544A (en) * | 2016-10-13 | 2018-04-16 | 智微科技股份有限公司 | Test fixture and test system applicable to electronic device having Universal Serial Bus Type-C receptacle, and method for performing testing on electronic device with aid of test fixture |
| TWI650564B (en) * | 2017-04-11 | 2019-02-11 | 飛宏科技股份有限公司 | Test device and method for universal serial bus C-type adapter |
| CN106841708B (en) * | 2017-04-11 | 2023-09-12 | 工业和信息化部电信研究院 | Test method, test fixture and system for quick charger |
| CN107543994A (en) * | 2017-08-31 | 2018-01-05 | 华勤通讯技术有限公司 | The test system of Type C interface |
| CN107608847B (en) * | 2017-09-07 | 2020-11-20 | 联想(北京)有限公司 | Electronic device, control method and control device thereof |
| CN112100104B (en) * | 2020-08-05 | 2022-07-19 | 深圳市广和通无线股份有限公司 | Universal serial bus device, system and communication equipment |
| CN113671416B (en) * | 2021-08-23 | 2024-04-02 | 常州同惠电子股份有限公司 | Scanning method for scanning on-off of TypeC wire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972729A (en) * | 2014-03-27 | 2014-08-06 | 覃金辉 | Double-surface-pluggable USB (universal serial bus) plug and manufacturing method thereof |
| CN104657313A (en) * | 2013-11-21 | 2015-05-27 | 创惟科技股份有限公司 | Detecting system and method for universal serial bus device |
| CN105045738A (en) * | 2014-03-24 | 2015-11-11 | 诺基亚技术有限公司 | Method and device for connecting USB type-c devices |
| CN105068958A (en) * | 2015-08-13 | 2015-11-18 | 小米科技有限责任公司 | Switching control method and device |
| CN105068898A (en) * | 2015-06-24 | 2015-11-18 | 福州瑞芯微电子股份有限公司 | USB type-C high-speed debug method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178405B (en) * | 2011-12-21 | 2015-09-02 | 神讯电脑(昆山)有限公司 | Can the jockey of detecting connection status, electrical connection module and electronic installation |
-
2015
- 2015-11-24 CN CN201510824611.2A patent/CN105487955B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104657313A (en) * | 2013-11-21 | 2015-05-27 | 创惟科技股份有限公司 | Detecting system and method for universal serial bus device |
| CN105045738A (en) * | 2014-03-24 | 2015-11-11 | 诺基亚技术有限公司 | Method and device for connecting USB type-c devices |
| CN103972729A (en) * | 2014-03-27 | 2014-08-06 | 覃金辉 | Double-surface-pluggable USB (universal serial bus) plug and manufacturing method thereof |
| CN105068898A (en) * | 2015-06-24 | 2015-11-18 | 福州瑞芯微电子股份有限公司 | USB type-C high-speed debug method and device |
| CN105068958A (en) * | 2015-08-13 | 2015-11-18 | 小米科技有限责任公司 | Switching control method and device |
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| CN105487955A (en) | 2016-04-13 |
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Effective date of registration: 20191211 Address after: Floor 1, building 3, No. 988, Xinxing Second Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Weivo Semiconductor Co., Ltd. Address before: 201114 Shanghai City Caohejing export processing zone of Minhang District Pu Xing Road No. 789 Co-patentee before: Yingda Co., Ltd. Patentee before: Yingda Technology Co., Ltd. |
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