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Device and method for realizing automatic power failure of USB (Universal Serial Bus) device

A kind of equipment and automatic technology, applied in the field of communication, can solve the problems of easily damaged equipment interface, difficult to guarantee the test frequency, etc., to achieve the effect of meeting the mass production test, improving the efficiency of production test and the effectiveness of test

Active Publication Date: 2012-11-28
FEITIAN TECHNOLOGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The repetitive test of power-on and power-off of communication equipment can fully expose the stability of the product design and discover hidden dangers in the product design, such as the impact of the power-on impact of the power supply on the product, the reliability of power-on reset, and the system’s normal operation. Under working conditions, whether it can return to normal after power-on and power-off, etc., and usually this part of the test is done manually, the repeatability of work, the continuity of time, the frequency of testing is difficult to guarantee, manual plugging and unplugging is easy to damage the device interface, etc. Both are the weaknesses of manual testing, and there are obvious limitations and deficiencies in traditional testing methods and means

Method used

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  • Device and method for realizing automatic power failure of USB (Universal Serial Bus) device
  • Device and method for realizing automatic power failure of USB (Universal Serial Bus) device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a method for realizing the automatic power-off of a USB device comprises the following steps:

[0044] Step 101: the device waits to receive instructions from the host computer;

[0045] Step 102: After receiving the instruction, the device first judges whether the address has been set, if yes, execute step 103, otherwise execute step 110;

[0046] Specifically, in this embodiment, after receiving the instruction, the device judges whether the current device address is consistent with the target device address, if yes, it means that the address has been set; or after receiving the instruction, the device judges whether there is an address change flag, if there is an address change flag, it means The address is already set; otherwise, the address is not set.

[0047] Step 103: Determine whether the instruction satisfies the filter condition, if yes, execute step 104, otherwise return to execute step 101;

[0048] In this embodiment, the judg...

Embodiment 2

[0132] Such as figure 2 Shown a kind of USB device automatic power-off device 6, comprise USB HUB chip 2, main control chip 3, equipment port control circuit 4 and indicator light circuit 5, wherein, described device 6 is connected with PC through the port of USB HUB chip 2 1 connected, connected to the USB device 7 through the port of the device port control circuit 4, the main control chip 3 and the device port control circuit 4 are connected to the USB HUB chip 2, and the device port control circuit 4 and the indicator light circuit 5 are connected to the main control chip 3 .

[0133] The device is provided with a working voltage of 5V by a power supply, and the working voltage of 5V is converted into a voltage of 3.3V to supply power for the USB HUB chip 2 .

[0134] The USB HUB chip 2 is used to expand the USB channel, and provides an interface through which the PC 1 is connected to the USB device 7 through the device port control circuit 4, and is used to provide a da...

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PUM

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Abstract

The invention discloses a device and a method for realizing the automatic power failure of a USB (Universal Serial Bus) device, belonging to the technical field of communication. The device provided by the invention is connected with the USB device and a host machine, the address of the device is set to be identical to that of the USB device, and a power failure instruction issued by the host machine is received, so that the power failure of the USB device is controlled automatically. According to the method provided by the invention, the instruction meeting the filter conditions, which is issued by the host machine, is received, so that the automatic power failure of a target device is controlled; and the filter conditions can be set flexibly in advance. According to the method and the device, which can accurately control the power failure of the USB device, provided by the invention, the production test efficiency and the test efficiency can be improved, and the simultaneous large-batch production test of the device can be met.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an automatic power-off device and method for a USB device. Background technique [0002] The repetitive test of power-on and power-off of communication equipment can fully reveal the stability of the product design and discover hidden dangers in the product design, such as the impact of the power-on impact of the power supply on the product, the reliability of power-on reset, and the system’s normal operation. Under working conditions, whether it can return to normal after power-on and power-off, etc., and usually this part of the test is done manually, the repeatability of work, the continuity of time, the frequency of testing is difficult to guarantee, manual plugging and unplugging is easy to damage the device interface, etc. All are the weaknesses of manual testing, and there are obvious limitations and deficiencies in traditional testing methods and means. Contents ...

Claims

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Application Information

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IPC IPC(8): H04L12/26
Inventor 陆舟于华章
Owner FEITIAN TECHNOLOGIES