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A kind of analog unplugging device and method for automatically maintaining USB connection

An automatic maintenance, USB interface technology, applied in instruments, electrical digital data processing and other directions, can solve problems such as equipment functions can not be used

Active Publication Date: 2021-05-14
FUJIAN SHIDA COMP EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a device and method for automatically maintaining a USB connection simulation, which can simulate the USB plugging operation, thereby completely solving the device function caused by some USB devices due to compatibility problems such as suspended animation. Can't use the problem

Method used

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  • A kind of analog unplugging device and method for automatically maintaining USB connection
  • A kind of analog unplugging device and method for automatically maintaining USB connection
  • A kind of analog unplugging device and method for automatically maintaining USB connection

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Embodiment 1

[0058] Please refer to figure 1 as well as figure 2 , Embodiment 1 of the present invention is:

[0059] An analog unplugging device 1 for automatically maintaining a USB connection, comprising a plugging circuit and a control unit, the plugging circuit is electrically connected to the control unit; the plugging circuit includes a USB switch chip 3 and a MOS tube 4, and the control unit is an RS232 circuit A level conversion chip 2 for level conversion into TTL level.

[0060] Wherein, the input terminal of the USB switch chip 3, the input terminal of the level conversion chip 2 and the source of the MOS transistor 4 are respectively electrically connected to different ports of the main control unit 5, and the first output terminal of the USB switch chip 3 is connected to the USB The positive voltage data terminal on the interface 6 is connected, the second output terminal of the USB switch chip 3 is connected with the negative voltage data terminal on the USB interface 6, ...

Embodiment 2

[0065] Please refer to image 3 as well as Figure 4 , the second embodiment of the present invention is:

[0066] A method for automatically maintaining a USB connection, comprising steps:

[0067] The main control unit judges whether the preset detection time is reached, if yes, enters step S0, otherwise continues to judge until the preset detection time is reached.

[0068] S0, the main control unit judges whether the terminal device is allowed to be plugged and unplugged, and if so, proceeds to step S1, otherwise judges again according to the preset judgment time.

[0069] S1. The main control unit acquires the current state information of the USB device, and judges whether the current state information is consistent with the normal state information. If not, it sends a plug-and-plug command to the analog plug-and-plug device, and the plug-and-plug command includes a control level signal;

[0070] S20, the level conversion chip converts the control level signal composed...

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PUM

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Abstract

The invention discloses an analog unplugging device for automatically maintaining a USB connection, comprising a plugging circuit and a control unit, the plugging circuit is electrically connected to the control unit; the control unit is connected to the main control unit through a control line, and one end of the plugging circuit is connected to the The main control unit is electrically connected, and the other end is connected to the USB interface; the control unit receives the control level signal of the main control unit, and controls the on-off of the plug-in circuit according to the state conversion of the control level signal; A simulation plug-and-plug device is connected between the main control unit and the USB interface to simulate the USB plug-and-plug operation between the terminal device and the USB device, thereby completely solving the problem that the device function cannot be used caused by the compatibility problem of some USB devices; automatic simulation The USB plug-and-plug operation does not need to replace a new module, thereby avoiding waste of cost; and does not require customer service personnel to manually restart, thereby improving customer experience.

Description

technical field [0001] The invention relates to the field of self-service terminals, in particular to an analog plugging and unplugging device and method for automatically maintaining USB connections. Background technique [0002] With the strengthening of global integration and the acceleration of my country's information construction, the demand for production and service efficiency in various industries continues to increase. Self-service terminals have begun to expand rapidly from the banking industry to other fields, and their application scope has expanded to telecommunications, electric power, medical care, Aviation, retail, government affairs, insurance and many other industries and fields. Usually self-service terminals will integrate many USB interface functional modules, such as printing function, card reading function, fingerprint and camera, etc. Occasionally, these functional modules appear suspended animation and cannot be used. You need to re-plug the USB int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42G06F13/40
CPCG06F13/4081G06F13/4282G06F2213/0042
Inventor 王智鹏郑颖锋侯煜明吕进之邱智勇
Owner FUJIAN SHIDA COMP EQUIP