CN113329272B

CN113329272B - Interface board

Info

Publication number: CN113329272B
Application number: CN202110585173.4A
Authority: CN
Inventors: 郑剑君
Original assignee: Shenzhen Konka Electronic Technology Co Ltd
Current assignee: Shenzhen Konka Electronic Technology Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2023-03-21
Anticipated expiration: 2041-05-27
Also published as: CN113329272A

Abstract

The invention discloses an interface board, which comprises a signal input module, a signal conversion module and a signal output module; the signal input module is electrically connected with the signal conversion module and is used for transmitting the input first WI FI signal to the signal conversion module; the signal conversion module is electrically connected with the signal output module and is used for converting the first WIF I signal into a second WIF I signal and at least two paths of USB signals and outputting the second WIF I signal and a plurality of paths of USB signals to the signal output module; the signal output module is used for respectively transmitting the second WIFI signal and the plurality of paths of USB signals to external equipment; the invention effectively reduces the occupation of the USB interface on the mainboard and expands the number of the USB interfaces by converting one WI FI signal into a plurality of USB signals.

Description

Interface board

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an interface board.

Background

The number of the USB interfaces set in the motherboard of the current electric equipment is limited, and only a single USB interface is usually set. In practical application, along with the increase of external devices with USB interfaces, the corresponding demand for the number of the USB interfaces of the mainboard is also increased, and when the electric equipment needs to be connected with the external devices with a plurality of USB interfaces, the mainboard with a single USB interface has the problem of insufficient USB interfaces.

Thus, the prior art has yet to be improved and enhanced.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide an interface board, which effectively reduces the occupation of USB interfaces on a motherboard and expands the number of USB interfaces by converting a WIFI interface on the motherboard into multiple USB interfaces.

In order to achieve the purpose, the invention adopts the following technical scheme:

an interface board comprises a signal input module, a signal conversion module and a signal output module;

the signal input module is electrically connected with the signal conversion module and is used for transmitting the input first WIFI signal to the signal conversion module;

the signal conversion module is electrically connected with the signal output module and is used for converting the first WIFI signal into a second WIFI signal and at least two paths of USB signals and outputting the second WIFI signal and the multiple paths of USB signals to the signal output module;

and the signal output module is used for respectively transmitting the second WIFI signal and the plurality of paths of USB signals to external equipment.

In the interface board, the signal output module comprises a WIFI signal output unit and a plurality of USB signal output units corresponding to the number of the USB signals;

the WIFI signal output unit is electrically connected with the signal conversion module and used for transmitting the second WIFI signal to external equipment;

each USB signal output unit is connected with the signal conversion module and is used for transmitting the corresponding path of USB signal to external equipment.

In the interface board, the WIFI signal output unit comprises a WIFI output interface, a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor; the one end of first resistance is connected signal conversion module, the other end of first resistance is connected the 4 th foot of WIFI output interface, the one end of second resistance is connected signal conversion module, the other end of second resistance is connected the 5 th foot of WIFI output interface, the one end of third resistance is connected the 7 th foot of WIFI output interface, the other end ground connection of third resistance, the one end of first electric capacity with the one end of second electric capacity is all connected the 3 rd foot of WIFI output interface.

In the interface board, each of the USB signal output units includes a USB interface, a fourth resistor and a fifth resistor; one end of the fourth resistor is connected with a pin 3 of the USB interface, the other end of the fourth resistor is connected with the signal conversion module, one end of the fifth resistor is connected with a pin 2 of the USB interface, and the other end of the fifth resistor is connected with the signal conversion module.

In the interface board, the signal conversion module includes a conversion chip, a sixth resistor, a seventh resistor, a third capacitor, a fourth capacitor, a fifth capacitor, an oscillator, a sixth capacitor, a seventh capacitor, an inductor, an eighth resistor, a ninth resistor, a tenth resistor, an eighth capacitor, an eleventh resistor, and a twelfth resistor;

one end of the sixth resistor is connected with the signal input module, the other end of the sixth resistor is connected with the 25 th pin of the conversion chip, one end of the seventh resistor is connected with the signal input module, the other end of the seventh resistor is connected with the 24 th pin of the conversion chip, one end of the third capacitor, one end of the eighth resistor and one end of the oscillator are all connected with the 4 th pin of the conversion chip, one end of the fourth capacitor, the other end of the eighth resistor and the other end of the oscillator are all connected with the 5 th pin of the conversion chip, the other end of the third capacitor and the other end of the fourth capacitor are all grounded, one end of the fifth capacitor is connected with the 17 th pin and the 16 th pin of the conversion chip, one end of the sixth capacitor and one end of the inductor are all connected with the 15 th pin of the conversion chip, and the other end of the fifth capacitor and the other end of the sixth capacitor are all grounded; one end of the seventh capacitor is connected with the 14 th pin of the conversion chip, the other end of the seventh capacitor is grounded, one end of the eighth resistor is connected with the 2 nd pin of the conversion chip, and the other end of the eighth resistor is grounded; one end of the ninth resistor, one end of the eighth capacitor and one end of the tenth resistor are all connected with one end of the eleventh resistor, the other end of the ninth resistor and the other end of the eighth capacitor are all grounded, the other end of the tenth resistor is connected with the 21 st pin of the conversion chip, and the other end of the eleventh resistor is connected with the power supply.

In the interface board, the signal input module includes a WIFI input interface, a 6 th pin of the WIFI input interface is connected with one end of the sixth resistor, and a 7 th pin of the WIFI input interface is connected with one end of the seventh resistor.

The interface board also comprises an anti-interference module; the anti-interference module is connected with the signal conversion module and used for transmitting an input first WIFI signal to the signal conversion module and transmitting the second WIFI signal, the first USB signal, the second USB signal and the third USB signal output by the signal conversion module to external equipment.

In the interface board, the anti-interference module comprises a first FFC interface and a plurality of second FFC interfaces, and the number of the second FFC interfaces corresponds to the number of paths of the second WIFI signal and the USB signal;

the first FFC interface is connected with the signal conversion module and used for transmitting the input first WIFI signal to the signal conversion module;

each second FFC interface is connected with the signal conversion module; each second FFC interface is configured to transmit the corresponding one of the second WIFI signals or the USB signal to an external device, respectively.

Compared with the prior art, the interface board provided by the invention comprises a signal input module, a signal conversion module and a signal output module; the signal input module is electrically connected with the signal conversion module and is used for transmitting the input first WIFI signal to the signal conversion module; the signal conversion module is electrically connected with the signal output module and is used for converting the first WIFI signal into a second WIFI signal and at least two paths of USB signals and outputting the second WIFI signal and the multiple paths of USB signals to the signal output module; and the signal output module is used for transmitting the second WIFI signal and the multiple paths of USB signals to external equipment. According to the invention, the signal input module is arranged to directly receive the first WIFI signal output by the mainboard, so that the interface board can directly carry out signal transmission with the WIFI interface of the mainboard, and the USB interface of the mainboard does not need to be occupied, thereby reducing the occupation of the USB interface of the mainboard; and then, one path of WIFI signal is converted into a plurality of paths of USB signals through the signal conversion module, and the signals are respectively output through the signal output module, so that the interface board can carry out signal transmission with a plurality of external devices using USB interfaces, and the number of the USB interfaces of the mainboard can be effectively expanded.

Drawings

Fig. 1 is a block diagram of an interface board according to the present invention;

fig. 2 is a block diagram of a signal output module and an anti-interference module in an interface board according to the present invention;

fig. 3 and fig. 4 are circuit diagrams of WIFI signal output units in the interface board provided by the present invention;

fig. 5 is a circuit diagram of a USB signal output unit in an interface board according to the present invention;

fig. 6, fig. 7 and fig. 8 are circuit diagrams of the USB signal output unit of the first embodiment in the interface board provided by the present invention;

fig. 9-13 are circuit diagrams of signal conversion modules in the interface board provided by the present invention;

fig. 14 is a circuit diagram of a signal input module in an interface board according to the present invention.

Detailed Description

The invention provides an interface board, which effectively reduces the occupation of USB interfaces on a mainboard and expands the number of the USB interfaces by converting one path of WIFI signals on the mainboard into a plurality of paths of USB signals.

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, according to an interface board provided by the present invention, the interface board 10 is connected to a main board 20 of an electric device, and the interface board 10 includes a signal input module 100, a signal conversion module 200, and a signal output module 300; the signal input module 100 is electrically connected to the signal conversion module 200, and the signal conversion module 200 is electrically connected to the signal output module 300; the signal input module 100 is configured to transmit an input first WIFI signal to the signal conversion module 200; the signal conversion module 200 is configured to convert the first WIFI signal into a second WIFI signal and at least two USB signals, and output the second WIFI signal and multiple USB signals to the signal output module 300; the signal output module 300 is configured to transmit the second WIFI signal and the multiple USB signals to an external device, respectively, and then establish a communication connection with the external device.

In this embodiment, the signal input module 100 is configured to directly receive the first WIFI signal output by the motherboard 20, so that the interface board 10 can directly perform signal transmission with the WIFI interface on the motherboard 20, and therefore the USB interface of the motherboard 20 does not need to be occupied, thereby reducing the occupation of the USB interface on the motherboard 20; then, one WIFI signal is converted into multiple USB signals by the signal conversion module 200, and the multiple USB signals are output by the signal output module 300, so that the interface board 10 can perform signal transmission with multiple external devices using USB interfaces, so as to effectively expand the number of USB interfaces of the motherboard 20.

Further, referring to fig. 2, the signal output module 300 includes a WIFI signal output unit 310 and a plurality of USB signal output units 320 corresponding to the number of the USB signals, specifically, one USB signal output unit 320 corresponds to one path of the USB signal; the WIFI signal output units 310 are electrically connected to the signal conversion module 200, and each USB signal output unit 320 is electrically connected to the signal conversion module 200; wherein the WIFI signal output unit 310 is configured to transmit the second WIFI signal to an external device; each of the USB signal output units 320 is configured to transmit a corresponding one of the USB signals to an external device, so as to effectively establish a communication connection with the external device.

Specifically, the signal output module 300 receives the second WIFI signal and at least two USB signals output by the signal conversion module 200, and outputs the second WIFI signal and the at least two USB signals to the external device, so as to establish a communication connection with the external device, and by setting the USB signal output unit 320, the interface board 10 can perform signal transmission with a plurality of external devices using USB interfaces, so as to effectively expand the number of USB interfaces of the motherboard 20.

Further, referring to fig. 3 and fig. 4, the WIFI signal output unit 310 includes a WIFI output interface CN0, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, and a second capacitor C2; one end of the first resistor R1 is connected to the signal conversion module 200, the other end of the first resistor R1 is connected to the 4 th pin of the WIFI output interface CN0, one end of the second resistor R2 is connected to the signal conversion module 200, the other end of the second resistor R2 is connected to the 5 th pin of the WIFI output interface CN0, one end of the third resistor R3 is connected to the 7 th pin of the WIFI output interface CN0, the other end of the third resistor R3 is grounded, and one end of the first capacitor C1 and one end of the second capacitor C2 are both connected to the 3 rd pin of the WIFI output interface CN 0.

Specifically, the signal input module 100 transmits the first WIFI signal output by the motherboard 20 to the signal conversion module 200, the signal conversion module 200 converts the first WIFI signal into the second WIFI signal (in this embodiment, USB _ DP1 and USB _ DM 1), the second WIFI signal passes through the first resistor R1 and the second resistor R2 to the 4 th pin and the 5 th pin of the WIFI output interface CN0, and then the WIFI output interface CN0 outputs the second WIFI signal. If the WIFI output interface CN0 is connected to an external device at this time, the WIFI output interface CN0 outputs a second WIFI signal to the external device, so that a communication connection is established with the external device through the WIFI output interface CN0, and output of the WIFI signal on the motherboard 20 is effectively achieved.

Further, referring to fig. 5, each of the USB signal output units 320 includes a USB interface 321, a fourth resistor R4, and a fifth resistor R5; one end of the fourth resistor R4 is connected to the 3 rd pin of the USB interface 321, the other end of the fourth resistor R4 is connected to the signal conversion module 200, one end of the fifth resistor R5 is connected to the 2 nd pin of the USB interface 321, and the other end of the fifth resistor R5 is connected to the signal conversion module 200; the 2 nd pin and the 3 rd pin of the USB interface receive the USB signal output by the signal conversion module 200, and then the received USB signal is output by the USB interface. And if the USB interface is connected with external equipment at the moment, transmitting the USB signal to the external equipment through the USB interface so as to realize communication with the external equipment.

The USB interface 321 in this embodiment is a universal USB socket CN1, and certainly, a 4-core socket CN2 may also be selected, so as to select a required USB interface for communication in different application scenarios, thereby meeting different application requirements and further expanding application scenarios of the interface board.

Supposing that the interface board of the invention is used for expanding the number of USB interfaces of a mainboard of a television, when the interface board needs to be used for connecting with built-in equipment, the interface board is fixed at a proper position of a television middle shell, and at the moment, the USB interface of a USB signal output unit 320 in the interface board communicates with the built-in equipment by using a 4-core seat CN 2; the built-in device can be a Dongle (Software Dongle, which is an encryption mode of computer Software and is commonly called a hardware encryption lock and is hardware inserted into a parallel port or a USB port of a computer) small board, or other built-in devices in a television. When the interface board needs to be used for connecting with an external device (such as a USB disk), the interface board is fixed at a position close to the television shell, and the USB interface of the USB signal output unit 320 in the interface board uses the universal USB socket CN1. When the interface board needs to be used for connecting with the built-in equipment and the external equipment at the same time, the interface board is fixed at a proper position of a television middle shell, and the USB interface of the USB signal output unit 320 in the interface board selects the universal USB socket CN1 or 4 socket CN2 as required, so that the interface board can select different USB interfaces according to specific application occasions, is convenient to use, and expands the application range.

In specific implementation, please refer to fig. 6, fig. 7 and fig. 8, in this embodiment, three USB signal output units 320 are provided as an example for description: then in the first embodiment of the present invention, the USB interfaces of the universal USB sockets in the three signal output units 320 are respectively denoted as CN11, CN12 and CN13, and the USB interfaces of the 4-core socket are respectively denoted as CN21, CN22 and CN23; correspondingly, the signal conversion module 200 converts the first WIFI signal into one path of second WIFI signal and three paths of USB signals, and outputs the two paths of second WIFI signals and three paths of USB signals to the signal output module 300, where the three paths of USB signals are respectively a first USB signal (USB _ DM2 and USB _ DP2 in this embodiment), a second USB signal (USB _ DM3 and USB _ DP3 in this embodiment), and a third USB signal (USB _ DM4 and USB _ DP4 in this embodiment); the first USB signal is transmitted to the external device by the universal USB socket CN11 or the 4-core socket CN21 in the signal output unit 320, the second USB signal is transmitted to the external device by the CN12 or the CN22, and the third USB signal is transmitted to the external device by the CN13 or the CN23, so that three USB signals are respectively output by the three USB signal output units 320, which is equivalent to that three USB interfaces are newly added on the motherboard 20 to output three USB signals output by the signal conversion module 200 through the three USB interfaces, because the interface board 10 can receive the first WIFI signal output by the WIFI output interface CN0 of the motherboard 20, which is equivalent to that the interface board 10 does not need to occupy the USB interfaces of the motherboard 20 in the using process, and the number of USB interfaces is also increased, thereby achieving the purpose of expanding the number of USB interfaces in the motherboard 20.

Further, referring to fig. 9 to 12, the signal conversion module 200 includes a conversion chip U1, a sixth resistor R6, a seventh resistor R7, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, an oscillator Y1, a sixth capacitor C6, a seventh capacitor C7, an inductor L1, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eighth capacitor C8, an eleventh resistor R11, and a twelfth resistor R12; one end of the sixth resistor R6 is connected to the signal input module 100, the other end of the sixth resistor R6 is connected to the 25 th pin of the conversion chip U1, one end of the seventh resistor R7 is connected to the signal input module 100, the other end of the seventh resistor R7 is connected to the 24 th pin of the conversion chip U1, one end of the third capacitor C3, one end of the eighth resistor R8 and one end of the oscillator Y1 are all connected to the 4 th pin of the conversion chip U1, one end of the fourth capacitor C4, the other end of the eighth resistor R8 and the other end of the oscillator Y1 are all connected to the 5 th pin of the conversion chip U1, the other end of the third capacitor C3 and the other end of the fourth capacitor C4 are all grounded, one end of the fifth capacitor C5 is connected to the 17 th pin and the 16 th pin of the conversion chip U1, one end of the sixth capacitor C6 and one end of the inductor L1 are all connected to the 15 th pin of the conversion chip U1, and the other end of the fifth capacitor C5 and the sixth capacitor C6 are all grounded; one end of the seventh capacitor C7 is connected to the 14 th pin of the conversion chip U1, the other end of the seventh capacitor C7 is grounded, one end of the eighth resistor R8 is connected to the 2 nd pin of the conversion chip U1, and the other end of the eighth resistor R8 is grounded; one end of the ninth resistor R9, one end of the eighth capacitor C8 and one end of the tenth resistor R10 are all connected to one end of the eleventh resistor R11, the other end of the ninth resistor R9 and the other end of the eighth capacitor C8 are all grounded, the other end of the tenth resistor R10 is connected to the 21 st pin of the conversion chip U1, and the other end of the eleventh resistor R11 is electrically connected.

Specifically, the signal input module 100 transmits the first WIFI signal (in this embodiment, USBUP _ DP _ H, USBUP _ DM _ H) to the conversion chip U1, then the conversion chip U1 converts the first WIFI signal into one path of the second WIFI signal and three paths of USB signals, that is, the first USB signal, the second USB signal, and the third USB signal, outputs the second WIFI signal to the WIFI signal output interface CN0, and transmits the three paths of USB signals to the three USB signal output units 320, so that one path of the WIFI signal on the motherboard is converted into the second WIFI signal and the multiple paths of USB signals, thereby increasing the multiple paths of signal communication, reducing the occupation of USB interfaces on the motherboard, and facilitating the expansion of the number of USB interfaces.

Further, referring to fig. 13, the signal conversion module 200 further includes a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, and a fourteenth capacitor C14; one end of the ninth capacitor C9 is connected to the 26 th pin of the conversion chip U1 and an electrical connection terminal (VCC in this embodiment), and the other end of the ninth capacitor C9 is grounded; one end of the tenth capacitor C10 is connected to the 1 st pin of the conversion chip U1 and the power supply, and the other end of the tenth capacitor C10 is connected to ground; one end of the eleventh capacitor C11 is connected to the 8 th pin of the conversion chip U1 and the power supply, and the other end of the eleventh capacitor C11 is connected to ground; one end of the twelfth capacitor C12 is connected with the 13 th pin of the conversion chip U1 and the power supply, and the other end of the twelfth capacitor C12 is connected with the ground; one end of the thirteenth capacitor C13 is connected to the 3 rd pin of the conversion chip U1 and the power supply, and the other end of the thirteenth capacitor C13 is connected to ground; one end of the fourteenth capacitor C14 is connected to the 22 nd pin of the conversion chip U1 and the power supply, and the other end of the fourteenth capacitor C14 is connected to ground. In this embodiment, the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11, the twelfth capacitor C12, the thirteenth capacitor C13, and the fourteenth capacitor C14 are filter capacitors at the periphery of the conversion chip U1, and noise and ac components in the power supply are filtered by the filter capacitors, so as to provide smooth and stable electric energy for the conversion chip U1, thereby enabling the conversion chip U1 to normally and stably operate.

Further, referring to fig. 14, the signal input module 100 includes a WIFI input interface CN3, a pin 6 of the WIFI input interface CN3 is connected to one end of the sixth resistor R6, and a pin 7 of the WIFI input interface CN3 is connected to one end of the seventh resistor R7; specifically, the WIFI input interface CN3 transmits a first WIFI signal output by the motherboard to the conversion chip U1, so that the subsequent conversion chip U1 performs signal conversion; in this embodiment, establish communication connection with the mainboard through setting up the WIFI input interface, be equivalent to having occupied the WIFI interface of mainboard, just so avoided occupying the USB interface of mainboard, can practice thrift the USB interface of mainboard from this to solve the not enough problem of USB interface.

Further, please continue to refer to fig. 1, the interface board 10 further includes an anti-interference module 400; the anti-interference module 400 is connected to the signal conversion module 200, and is configured to transmit the input first WIFI signal to the signal conversion module 200, and transmit the second WIFI signal and the multiple USB signals output by the signal conversion module 200 to an external device, so as to complete communication with the external device.

Specifically, the anti-jamming module 400 transmits a first WIFI signal output by the motherboard 10 to the conversion chip U1, the conversion chip U1 converts the first WIFI signal into the second WIFI signal and multiple USB signals, and transmits the second WIFI signal and multiple USB signals to an external device through the anti-jamming module 400; in this embodiment, the anti-interference module 400 is configured to establish a communication connection with the interface board 10, and the first WIFI signal is transmitted to the conversion chip U1 through the anti-interference module 400, so as to effectively reduce electromagnetic interference to the motherboard 20 caused by other peripheral electronic products during operation; meanwhile, the anti-interference module 400 is arranged to be in communication connection with the conversion chip U1, the second WIFI signal and the plurality of paths of USB signals are output to the external equipment after EMI is filtered by the anti-interference module 400, and the problem of electromagnetic interference caused by the mainboard 20 to other peripheral electronic products during working is effectively solved.

Further, referring to fig. 2, fig. 6, fig. 7, fig. 8 and fig. 14, the interference rejection module 400 includes a first FFC interface 410 and a plurality of second FFC interfaces 420, where the number of the second FFC interfaces 420 corresponds to the number of the second WIFI signals and the USB signals; the first FFC interface 410 is connected to the conversion chip U1 and the motherboard 20, each of the second FFC interfaces 420 is connected to the conversion chip U1, the first FFC interface is configured to transmit the input first WIFI signal to the conversion chip U1, and each of the second FFC interfaces is configured to transmit the corresponding second WIFI signal or the USB signal to an external device, so as to implement communication with the external device.

Specifically, the first FFC interface 410 transmits a first WIFI signal output by the motherboard 10 to the conversion chip U1, the conversion chip U1 converts the first WIFI signal into the second WIFI signal and multiple USB signals, and outputs the second WIFI signal and the multiple USB signals to the corresponding second FFC interfaces 420 respectively, and the second FFC interfaces 420 transmit the corresponding second WIFI signal or the corresponding USB signal to external devices, which is equivalent to that one FFC interface of the multiple second FFC interfaces transmits one second WIFI signal, and other second FFC interfaces correspondingly transmit one USB signal; in this embodiment, by providing the first FFC interface 410, the interface board 10 can establish a communication connection with the motherboard 20 by using an FFC shielding wire, so as to effectively improve electromagnetic interference caused by other peripheral electronic products when working on the motherboard 20; meanwhile, by providing a plurality of second FFC interfaces 420, the interface board 10 can establish communication connection with an external device by using an FFC shielded wire, thereby effectively avoiding the problem of electromagnetic interference.

In specific implementation, if three USB signals are set as an example, four second FFC interfaces may be correspondingly set to be respectively denoted as F1, F2, F3, and F4, where the second FFC interface F1 may be correspondingly used to transmit a second WIFI signal, the second FFC interface F2 correspondingly transmits a first USB signal, the second FFC interface F3 correspondingly transmits a second USB signal, and the second FFC interface F4 correspondingly transmits a third USB signal; of course, in other embodiments, other numbers of FFC interfaces may be optionally provided, and the present invention is not limited to this.

In the invention, by arranging the FFC interface, the interface board can be compatible with the USB interface and also can be compatible with the FFC interface, so that whether the FFC interface is used for transmitting signals can be selected according to whether the product has electromagnetic compatibility requirements or not in practical application, the problem of insufficient mainboard interfaces can be solved, the problem of electromagnetic interference can also be solved, and the application range of the interface board is further effectively improved.

In summary, the interface board provided by the present invention includes a signal input module, a signal conversion module, and a signal output module; the signal input module is electrically connected with the signal conversion module and is used for transmitting the input first WIFI signal to the signal conversion module; the signal conversion module is electrically connected with the signal output module and is used for converting the first WIFI signal into a second WIFI signal and at least two paths of USB signals and outputting the second WIFI signal and the multiple paths of USB signals to the signal output module; the signal output module is used for transmitting the second WIFI signal and the multiple paths of USB signals to external equipment respectively, and the signal output module effectively reduces occupation of USB interfaces on the mainboard and expands the number of the USB interfaces by converting one path of WIFI signal into multiple paths of USB signals.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. An interface board is characterized by comprising a signal input module, a signal conversion module and a signal output module;

the signal output module is used for respectively transmitting the second WIFI signal and the plurality of paths of USB signals to external equipment; the signal input module is arranged to directly receive a first WIFI signal output by the mainboard, so that the interface board directly carries out signal transmission with a WIFI interface on the mainboard, and the occupation of a USB interface on the mainboard is reduced; the signal conversion module converts one path of WIFI signal into multiple paths of USB signals, and the signals are respectively output through the signal output module, so that the interface board and a plurality of external devices using USB interfaces carry out signal transmission, and the number of the USB interfaces of the mainboard is expanded.

2. The interface board according to claim 1, wherein the signal output module includes a WIFI signal output unit and a plurality of USB signal output units corresponding to the number of USB signals;

3. The interface board of claim 2, wherein the WIFI signal output unit comprises a WIFI output interface, a first resistor, a second resistor, a third resistor, a first capacitor and a second capacitor; the one end of first resistance is connected signal conversion module, the other end of first resistance is connected the 4 th foot of WIFI output interface, the one end of second resistance is connected signal conversion module, the other end of second resistance is connected the 5 th foot of WIFI output interface, the one end of third resistance is connected the 7 th foot of WIFI output interface, the other end ground connection of third resistance, the one end of first electric capacity with the one end of second electric capacity is all connected the 3 rd foot of WIFI output interface.

4. The interface board according to claim 2, wherein each of the USB signal output units includes a USB interface, a fourth resistor, and a fifth resistor; one end of the fourth resistor is connected with a pin 3 of the USB interface, the other end of the fourth resistor is connected with the signal conversion module, one end of the fifth resistor is connected with a pin 2 of the USB interface, and the other end of the fifth resistor is connected with the signal conversion module.

5. The interface board of claim 1, wherein the signal conversion module comprises a conversion chip, a sixth resistor, a seventh resistor, a third capacitor, a fourth capacitor, a fifth capacitor, an oscillator, a sixth capacitor, a seventh capacitor, an inductor, an eighth resistor, a ninth resistor, a tenth resistor, an eighth capacitor, an eleventh resistor, and a twelfth resistor; one end of the sixth resistor is connected with the signal input module, the other end of the sixth resistor is connected with the 25 th pin of the conversion chip, one end of the seventh resistor is connected with the signal input module, the other end of the seventh resistor is connected with the 24 th pin of the conversion chip, one end of the third capacitor, one end of the eighth resistor and one end of the oscillator are all connected with the 4 th pin of the conversion chip, one end of the fourth capacitor, the other end of the eighth resistor and the other end of the oscillator are all connected with the 5 th pin of the conversion chip, the other end of the third capacitor and the other end of the fourth capacitor are all grounded, one end of the fifth capacitor is connected with the 17 th pin and the 16 th pin of the conversion chip, one end of the sixth capacitor and one end of the inductor are all connected with the 15 th pin of the conversion chip, and the other end of the fifth capacitor and the other end of the sixth capacitor are all grounded; one end of the seventh capacitor is connected with the 14 th pin of the conversion chip, the other end of the seventh capacitor is grounded, one end of the eighth resistor is connected with the 2 nd pin of the conversion chip, and the other end of the eighth resistor is grounded; one end of the ninth resistor, one end of the eighth capacitor and one end of the tenth resistor are all connected with one end of the eleventh resistor, the other end of the ninth resistor and the other end of the eighth capacitor are all grounded, the other end of the tenth resistor is connected with the 21 st pin of the conversion chip, and the other end of the eleventh resistor is connected with the power supply.

6. The interface board of claim 5, wherein the signal input module includes a WIFI input interface, a pin 6 of the WIFI input interface is connected to one end of the sixth resistor, and a pin 7 of the WIFI input interface is connected to one end of the seventh resistor.

7. The interface board of claim 1, wherein the interface board further comprises an anti-jamming module; the anti-interference module is connected with the signal conversion module and used for transmitting the input first WIFI signal to the signal conversion module and transmitting the second WIFI signal and the multiple paths of USB signals output by the signal conversion module to external equipment.

8. The interface board of claim 7, wherein the interference rejection module includes a first FFC interface and a plurality of second FFC interfaces, and the number of the second FFC interfaces corresponds to the number of paths of the second WIFI signal and the USB signal;

each second FFC interface is connected with the signal conversion module; each second FFC interface is configured to transmit the corresponding one of the second WIFI signals or the USB signal to an external device.