USB sharing device based on virtual control

[0034] Please refer to figure 1 and figure 2 , the present invention is a kind of USB sharing device based on virtual control, and it comprises:

[0035] Several USB input interfaces 1 are used to connect with the client to realize data transmission;

[0036] The selection module 2 is connected to several USB input interfaces 1 and USB output interfaces 4, and is used to realize the connection between any USB input interface 1 and USB output interface 4;

[0037] The control module 3, connected to the selection module 2, is used to receive the USB data request transmitted by the client through the USB input interface 1, and control the selection module 2 to realize the connection of the corresponding selection module 2, and connect the corresponding USB input interface 1 and USB output port 4;

[0038] The USB output interface 4 is used to connect with the driving device to realize the transmission of client data.

[0039] refer to figure 2 , the control module 3 includes

[0047]The difference between this embodiment and the first embodiment is that a short-circuit detection unit 9 and a display alarm unit 10 are added; the remaining parts are the same as those of the first embodiment, and will not be repeated here.

[0048] combine Figure 3-Figure 5 , the USB input interface 1 and the USB output interface 4 are both connected with the input end of the short-circuit detection unit 9, and the output end of the short-circuit detection unit 9 is connected with the display alarm unit 10; image 3 The connection relationship between the USB output interface 4 and the short circuit detection unit 9 is not shown, and the connection relationship is the same as the connection relationship between the USB output interface 4 and the short circuit detection unit 9 .

[0049] see Figure 4 and Figure 5 , the short-circuit detection unit 9 includes at least three optocouplers, and the three optocouplers are connected in series in the same direction and are c