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An access device, multi-terminal technology, applied in instrumentation, error detection/correction, calculation, etc., can solve problems such as low test efficiency
Active Publication Date: 2019-12-10
ALLWINNER TECH CO LTD
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Abstract
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Problems solved by technology
[0003] Based on this, it is necessary to provide a multi-terminal access device for the low efficiency of traditional intelligent terminal testing
Method used
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specific Embodiment
[0051] In this embodiment, the multi-terminal access device includes a chassis, and a USB repeater, a USB switching module, a first network conversion module, a network switch and a second network conversion module are arranged in the chassis.
[0052] Specifically, in this embodiment, the USB repeaters are USB HUBs, the number of which is three, one USB repeater is connected to the computer through a USB data cable, and the other two are connected to the USB repeater.
[0053] In this embodiment, the USB switching module is a USB switching board, and the USB switching board includes a first control unit, a first interface unit, a switching unit, and a relay. In this embodiment, the first control unit is a single-chip microcomputer LPC1768. One interface unit is the PCA9555PW chip, the switching unit is the USB analog switch MAX4906, the I2C pins of the single-chip microcomputer LPC1768 are connected to eight PCA9555PW chips, the SDA and SCL pins of the PCA9555PW chip are conne...
Embodiment approach
[0059] In this embodiment, the chassis is provided with 16 groups of interfaces, corresponding to connecting 16 intelligent terminals. Each group of interfaces includes a USB port (USB interface), a UART port (UART serial port interface), a 5V power terminal (power interface), an IO expansion port, an OTG port (OTG interface) and a set of indicator lights. The USB port is used to distribute test cases and transmit adb commands to smart terminals, the UART port is used to print test information and results, the OTG port is used to test USB compatibility of smart terminals or store test data, and the 5V power terminal is used to power TV boxes, etc. The smart terminal that cannot be powered by USB is powered. The IO expansion port contains 3 3.3VIO pins, which can be connected to the on / off button of the smart terminal, OTG ID line, etc., for power on and off control, etc. The indicator light indicates the 5V of each group. Whether the power supply is normal, whether the serial ...
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Abstract
The invention relates to a multi-terminal access device. The multi-terminal access device comprises USB (universal serial bus) repeaters, USB switching modules, a first network conversion module, a network switch and a second network conversion module, wherein the USB switching modules are connected with the USB repeaters; the network switch is connected with the USB repeaters through the first network conversion module; the second network conversion module is connected with the network switch; one USB repeater is used for being connected with a computer; the first network conversion module is used for converting a USB signal into a network signal; the network switching module is used for being connected to USB interfaces and OTG (on-the-go) interfaces; and the second network conversion module is used for converting the network signal into a serial port signal and is connected with serial port interfaces. The USB signal is converted into the network signal and signal processing is conducted by the network switch, so the condition that too much occupation of a computer memory caused by USB converted UART (universal asynchronous receiver / transmitter) interfaces is avoided; and furthermore, the USB interfaces, the OTG interfaces, IO (input / output) extended ports and the serial port interfaces are provided for a test terminal, so the test modes are rich and the test efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of terminal testing, in particular to a multi-terminal access device. Background technique [0002] After the hardware device and software development of the smart terminal is completed, it is necessary to test the software and hardware product package to confirm whether it meets the requirements of the design specifications. To this end, connect the smart terminal to the computer, and test the smart terminal through the computer. The computer is generally connected to the smart terminal through USB (Universal Serial Bus, Universal Serial Bus) and UART serial ports, and the USB port is used to send test cases to Smart terminal, UART port is used to read test information. In order to improve the test efficiency, a computer needs to be connected to multiple terminals under test in order to distribute test cases for concurrent testing. Because the commonly used UART ports are converted from USB, when there ar...
Claims
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Application Information
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