CN215679343U - Test circuit board and device of USB interface - Google Patents
Test circuit board and device of USB interface Download PDFInfo
- Publication number
- CN215679343U CN215679343U CN202121338777.0U CN202121338777U CN215679343U CN 215679343 U CN215679343 U CN 215679343U CN 202121338777 U CN202121338777 U CN 202121338777U CN 215679343 U CN215679343 U CN 215679343U
- Authority
- CN
- China
- Prior art keywords
- test
- usb interface
- circuit board
- pin
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a test circuit board of a USB interface, which is used for realizing the connection of the USB interface of a terminal to be tested with test equipment and a test power supply; the test circuit board is provided with a first switch device and a second switch device. The utility model also provides a testing device of the USB interface. According to the test circuit board and the test device for the USB interface, the first switch device and the second switch device can realize switching of the communication state and the charging state of the USB interface, so that the communication function and the charging function of the USB interface can be conveniently tested, and the test efficiency is improved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of testing, in particular to a test circuit board and a test device for a USB interface.
[ background of the utility model ]
At present, the communication and charging functions of a USB (Universal Serial Bus) interface are standard functions of terminals such as a tablet computer and a mobile phone. In the production process of the terminal, the communication and charging functions of the USB interface need to be tested, the current USB data lines are all changed from a single port to a single port, although the USB data lines can be charged during communication, the charging speed during communication is limited, certain test stations in a factory cannot meet the test requirement of quick full charge, the charging test and the communication test of the USB interface cannot be switched, and the test efficiency is low.
In view of the above, it is desirable to provide a novel test circuit board and device for USB interface to overcome the above-mentioned drawbacks.
[ Utility model ] content
The utility model aims to provide a test circuit board and a test device for a USB interface.
In order to achieve the above object, in a first aspect, the present invention provides a test circuit board for a USB interface, where the test circuit board is used to implement connection between a USB interface of a terminal to be tested and a test device and a test power supply; the test circuit board is provided with a first switch device and a second switch device; the USB interface is provided with a data pin and a power supply pin, and the data pin comprises a data positive pin and a data negative pin; when the USB interface is used for communication test, the first switch device is used for realizing the communication between the data pin and the test equipment, and the second switch device is used for realizing the communication between the power supply pin and the test equipment; when the USB interface is used for charging test, the first switch device is used for realizing short circuit of the data positive pin and the data negative pin, the second switch device is used for realizing communication between the power supply pin and the test power supply, and the test power supply outputs test voltage to the power supply pin.
In a preferred embodiment, the first switching device includes a first relay, a first normally open end of the first relay is connected to a positive data pin of the USB interface, and a first common end of the first relay is connected to a negative data pin of the USB interface.
In a preferred embodiment, a first knob is disposed on the test circuit board, and the first knob is used for triggering the first relay.
In a preferred embodiment, the second switching device includes a second relay, a second normally-closed end of the second relay is connected to the test equipment, and a second common end of the second relay is connected to a power supply pin of the USB interface.
In a preferred embodiment, a second knob is provided on the test circuit board, and the second knob is used for triggering the second relay.
In a preferred embodiment, the test equipment is used for controlling whether the test power supply outputs a test voltage.
In a preferred embodiment, the test power supply outputs a test voltage of 5V.
In a second aspect, the present invention further provides a testing apparatus for a USB interface, including the testing circuit board for a USB interface according to any one of the above embodiments.
In a preferred embodiment, the testing circuit further comprises a power supply, and the power supply is used for supplying power to the first switching device and the second switching device on the testing circuit board.
In a preferred embodiment, the test circuit board further comprises a data line, and the data line is used for realizing connection between the test circuit board and a terminal to be tested and connection between the test circuit board and test equipment.
Compared with the prior art, the test circuit board and the device for the USB interface provided by the utility model have the advantages that the first switch device and the second switch device are arranged on the test circuit board, when the USB interface is subjected to communication test, the first switch device and the second switch device can enable a data positive pin, a data negative pin and a power supply pin of the USB interface to be communicated with the test equipment, so that the communication function test of the USB interface 101 is realized; when the USB interface is used for testing the charging function, the first switch device and the second switch device can enable the data positive pin and the data negative pin of the USB interface to be in short circuit, the power pin is disconnected with the testing equipment, the power pin is communicated with the testing power supply, and then the charging function of the USB interface is tested. That is, the first switch device and the second switch device can realize the switching of the communication state and the charging state of the USB interface, so that the communication function and the charging function of the USB interface can be conveniently tested, and the testing efficiency is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic block diagram of a USB interface function test performed by a test circuit board of a USB interface according to the present invention;
FIG. 2 is a schematic structural diagram of a test circuit board of the USB interface according to the present invention;
FIG. 3 is a schematic circuit diagram of the USB interface in a communication state;
fig. 4 is a schematic circuit diagram of the USB interface in a charging state.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a test circuit board 100 for a USB interface, the test circuit board 100 for a USB interface is used to implement connection between a USB interface 101 of a terminal to be tested and a test device 102 and a test power supply 103, and a first switch device 10 and a second switch device 20 are disposed on the test circuit board 100.
Specifically, the terminal to be tested may be, but is not limited to, a mobile phone, a tablet computer, and the like, the terminal to be tested is provided with a USB interface 101, the USB interface 101 can implement communication and charging functions of the terminal to be tested, the USB interface 101 includes a data pin and a power pin DC, and the data pin includes a data positive pin D + and a data negative pin D-. The testing device 102 may be, but is not limited to, a computer, and the testing device 102 can communicate with a terminal to be tested through the USB interface 101. The testing power supply 103 may be, but is not limited to, a numerical control power supply, the testing power supply 103 may charge the terminal to be tested through the USB interface 101, and it can be understood that, when the communication and charging functions of the USB interface 101 are tested, the USB interface 101 of the terminal to be tested may be connected to the testing device 102 through the testing circuit board 100 and the data line; the test equipment 102 is also capable of controlling whether the test power supply 103 outputs a test voltage.
When the USB interface 101 performs a communication test, the first switching device 10 is used to connect the data pin to the testing device 102, and the second switching device 20 is used to connect the power pin DC to the testing device 102. At this time, the test device 102 controls the test power supply 103 to have no output, the data pin (i.e., the data positive pin D +, the data negative pin D-) and the power supply pin DC of the USB interface 101 are both connected to the test device 102, and the test device 102 and the terminal to be tested are in a communication state, thereby implementing the communication function test on the USB interface 101.
When the USB interface 101 performs a charging test, the first switch device 10 is used to realize a short circuit between the data positive pin D + and the data negative pin D-of the USB interface 101, the second switch device 20 is used to realize a connection between the power supply pin DC and the test power supply 103, and the test power supply 103 outputs a test voltage to the power supply pin DC. At this time, the data positive pin D + and the data negative pin D-of the USB interface 101 are short-circuited, the power pin DC is disconnected from the testing device 102, the power pin DC is connected to the testing power supply 103, the testing device 102 controls the testing power supply 103 to output a testing voltage to the power pin DC of the USB interface 101, and the testing power supply 103 and the terminal to be tested are in a charging state, so as to implement a charging function test on the USB interface 101. The test voltage output by the test power supply 103 may be 5V.
Therefore, according to the test circuit board 100 of the USB interface provided by the present invention, the first switch device 10 and the second switch device 20 are disposed on the test circuit board, when the USB interface 101 performs a communication test, the first switch device 10 and the second switch device 20 can enable the data positive pin D +, the data negative pin D-and the power pin DC of the USB interface 101 to be connected to the test equipment 102, so as to implement a communication function test on the USB interface 101; when the USB interface 101 performs the charging function test, the first switch device 10 and the second switch device 20 can short-circuit the data positive pin D + and the data negative pin D-of the USB interface 101, disconnect the power supply pin DC from the test device 102, connect the test power supply 103 to the power supply pin DC, and further implement the charging function test on the USB interface 101. That is, the first switch device 10 and the second switch device 20 can switch the communication state and the charging state of the USB interface 101, so as to facilitate the testing of the communication function and the charging function of the USB interface 101, and improve the testing efficiency.
Referring to fig. 2, 3 and 4, in the present embodiment, the first switching device 10 is a first relay K1, and the first relay K1 includes a first common terminal O1, a first normally open terminal a1 and a first normally closed terminal B1. The second switching device 20 is a second relay K2, and the second relay K2 includes a second common terminal O2, a second normally open terminal a2, and a second normally closed terminal B2. Specifically, the test circuit board 100 is provided with a first knob 11, the first knob 11 is used for triggering the first relay K1, the test circuit board 100 is further provided with a second knob 12, and the second knob 12 is used for triggering the second relay K2, for example, the first knob 11 and the second knob 12 may be screwed to a low-level end, so as to correspondingly trigger the first relay K1 and the second relay K2.
Further, the first normally open end a1 of the first relay K1 is connected to the data positive pin D + of the USB interface 101, the first normally closed end B1 of the first relay K1 is floating, and the first common end O1 of the first relay K1 is connected to the data negative pin D-of the USB interface 101. The second normally open end a2 of the second relay K2 is floating, the second normally closed end B2 of the second relay K2 is connected to the testing equipment 102, and the second common end O2 of the second relay K2 is connected to the power pin DC of the USB interface 101.
Fig. 3 is a schematic circuit diagram of the USB interface 101 in a communication state. In fig. 3, the first common port O1 of the first relay K1 is connected to the first normally closed port B1, the second common port O2 of the second relay K2 is connected to the second normally closed port B2, that is, the first relay K1 and the second relay K2 are not triggered, at this time, the data positive pin D +, the data negative pin D-, and the power supply pin DC of the USB interface 101 are all connected to the testing device 102, and the testing device 102 controls the testing power supply 103 to have no output, so that the testing device 102 and the terminal to be tested are in a communication state, thereby implementing the communication function test on the USB interface 101.
Fig. 4 is a schematic circuit diagram of the USB interface 101 in a charging state. In fig. 4, the first common end O1 of the first relay K1 is connected to the first normally open end a1, the second common end O2 of the second relay K2 is connected to the second normally open end a2, that is, both the first relay K1 and the second relay K2 are triggered, at this time, the data positive pin D + and the data negative pin D-of the USB interface 101 are shorted, the power pin DC is disconnected from the test device 102, the test device 102 controls the test power supply 103 to output a test voltage to the power pin DC of the USB interface 101, and the test power supply 103 and the terminal to be tested are in a charging state, so as to implement a charging function test on the USB interface 101.
The utility model also provides a testing device of the USB interface, which comprises the testing circuit board 100 of the USB interface. Specifically, the testing device of the USB interface may further include a power supply and a data line, where the power supply is used to supply power to the first switch device 10 and the second switch device 20 on the testing circuit board 100, the power supply may be a battery cell, and the power supply is accommodated in the jig box; the data line may implement connection between the test circuit board 100 and a terminal to be tested, and between the test circuit board 100 and the test equipment, and as can be understood, the data line is a USB data line. It should be noted that all embodiments of the test circuit board 100 for USB interface provided by the present invention are applicable to the test apparatus for USB interface provided by the present invention, and all can achieve the same or similar beneficial effects.
In summary, according to the test circuit board 100 and the device for the USB interface provided by the present invention, the test circuit board is provided with the first switch device 10 and the second switch device 20, when the USB interface 101 performs a communication test, the first switch device 10 and the second switch device 20 can enable the data positive pin D +, the data negative pin D-and the power supply pin DC of the USB interface 101 to be connected to the test equipment 102, so as to perform a communication function test on the USB interface 101; when the USB interface 101 performs the charging function test, the first switch device 10 and the second switch device 20 can short-circuit the data positive pin D + and the data negative pin D-of the USB interface 101, disconnect the power supply pin DC from the test device 102, connect the test power supply 103 to the power supply pin DC, and further implement the charging function test on the USB interface 101. That is, the first switch device 10 and the second switch device 20 can switch the communication state and the charging state of the USB interface 101, so as to facilitate the testing of the communication function and the charging function of the USB interface 101, and improve the testing efficiency.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The test circuit board of the USB interface is characterized in that the test circuit board is used for realizing the connection of the USB interface of a terminal to be tested with test equipment and a test power supply; the test circuit board is provided with a first switch device and a second switch device; the USB interface is provided with a data pin and a power supply pin, and the data pin comprises a data positive pin and a data negative pin;
when the USB interface is used for communication test, the first switch device is used for realizing the communication between the data pin and the test equipment, and the second switch device is used for realizing the communication between the power supply pin and the test equipment;
when the USB interface is used for charging test, the first switch device is used for realizing short circuit of the data positive pin and the data negative pin, the second switch device is used for realizing communication between the power supply pin and the test power supply, and the test power supply outputs test voltage to the power supply pin.
2. The test circuit board of the USB interface according to claim 1, wherein the first switching device comprises a first relay, a first normally-open end of the first relay is connected to a positive data pin of the USB interface, and a first common end of the first relay is connected to a negative data pin of the USB interface.
3. The test circuit board of the USB interface according to claim 2, wherein a first knob is disposed on the test circuit board, and the first knob is used to trigger the first relay.
4. The test circuit board of the USB interface according to claim 1, wherein the second switching device comprises a second relay, a second normally-closed terminal of the second relay is connected to the test equipment, and a second common terminal of the second relay is connected to a power pin of the USB interface.
5. The test circuit board of the USB interface of claim 4, wherein a second knob is disposed on the test circuit board, and the second knob is used for triggering the second relay.
6. The test circuit board of a USB interface of claim 1, wherein the test device is configured to control whether the test power supply outputs a test voltage.
7. The test circuit board of the USB interface according to claim 1, wherein the test power supply outputs a test voltage of 5V.
8. A test apparatus for a USB interface, comprising the test circuit board for a USB interface according to any one of claims 1 to 7.
9. The apparatus for testing a USB interface of claim 8, further comprising a power supply for supplying power to the first and second switching devices on the test circuit board.
10. The apparatus for testing a USB interface as claimed in claim 8, further comprising a data line for connecting the test circuit board to the terminal to be tested and the test circuit board to the test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338777.0U CN215679343U (en) | 2021-06-16 | 2021-06-16 | Test circuit board and device of USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338777.0U CN215679343U (en) | 2021-06-16 | 2021-06-16 | Test circuit board and device of USB interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215679343U true CN215679343U (en) | 2022-01-28 |
Family
ID=79975466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121338777.0U Active CN215679343U (en) | 2021-06-16 | 2021-06-16 | Test circuit board and device of USB interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215679343U (en) |
-
2021
- 2021-06-16 CN CN202121338777.0U patent/CN215679343U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3101754B1 (en) | Charging mode switching circuit and method | |
| CN105576727B (en) | Method, device and system for quick charging | |
| CN110176792B (en) | Multi-port quick-charging mobile power supply circuit and control method thereof | |
| KR20150048086A (en) | Charger, charging terminal, charging system and charging control method | |
| CN108595299B (en) | Test system of terminal equipment | |
| CN108556669A (en) | A kind of onboard charger and its control device | |
| CN206517085U (en) | Intelligent discharge circuit | |
| CN104184116A (en) | Protection circuit and electronic device provided with protection circuit | |
| CN215679343U (en) | Test circuit board and device of USB interface | |
| CN106451693B (en) | Treasured charges and OTG data line | |
| CN104753132A (en) | Power supply system and charging and discharging method thereof | |
| CN216904676U (en) | Power supply switching circuit and electronic equipment | |
| EP3291404A1 (en) | Method and device for implementing connection control | |
| CN107706977B (en) | Charging current detection method and charging device | |
| CN206442131U (en) | Charger baby and OTG data wires | |
| CN210161933U (en) | Direct current-to-direct current integrated charger | |
| CN113541237A (en) | Charger and charging method thereof | |
| CN111463853A (en) | Power supply circuit and robot apparatus | |
| CN104935842A (en) | Standby circuit, control method and television system of standby circuit | |
| CN206922442U (en) | Portable power source and charge-discharge system | |
| CN206117252U (en) | Compatible cell -phone intercom power management system | |
| CN212012172U (en) | Power supply circuit and robot apparatus | |
| CN214960126U (en) | Detection circuit and device | |
| CN204304543U (en) | A kind of power protecting circuit and terminal | |
| CN220188626U (en) | Test equipment and test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |