CN220671948U - Multimode serial port conversion device and system - Google Patents

Abstract

The application provides a multimode serial port conversion device and a multimode serial port conversion system, wherein the multimode serial port conversion device comprises a USB interface module, a low dropout regulator (LDO) module, an RS232 driving chip module, an RS485 driving chip module and a multimode serial port conversion device, wherein the USB interface module is used for transmitting USB signals and providing voltages for the LDO module, the RS232 driving chip module and the RS485 driving chip module respectively; the LDO module is used for converting the target voltage into the working voltage corresponding to the USB-to-serial port chip module; the USB-to-serial port chip module, the RS485 driving chip module and the RS232 driving chip module are respectively used for converting the USB signals and transmitting the converted signals to the interface module corresponding to the converted signals. According to the embodiment of the application, RS232, RS485 and JTAG are integrated, so that the conversion between the USB signal and the multi-mode serial port is realized, the efficiency and flexibility of equipment development and debugging are improved, and the cost is reduced.

Description

Multimode serial port conversion device and system

Technical Field

The present disclosure relates to serial port conversion technologies, and in particular, to a multi-mode serial port conversion device and system.

Background

When an electronic product is developed and debugged, a serial port is generally used as an interface for communicating with an upper computer. The most commonly used communication interface on the host computer is Universal Serial Bus (USB), so the USB-to-serial interface is the most commonly used device for development and debugging of electronic devices.

However, the level and communication protocol of different types of serial ports are different, so that the serial ports of different types cannot be commonly used. When different serial ports exist on the product, the corresponding type of serial port equipment is needed to be connected with the upper computer, so that a device for converting multiple USB (universal serial bus) into serial ports is needed to be equipped when one product is developed, and the device has lower flexibility when in use.

Disclosure of Invention

Based on the above, aiming at the technical problems, the multi-mode serial port conversion device and system with high use flexibility and supporting the use of multi-type serial ports are provided.

In a first aspect, the present application provides a multi-mode serial port conversion apparatus. The multimode serial port conversion device comprises: the device comprises a USB interface module, an LDO module, an RS232 driving chip module, a USB-to-serial port chip module, an RS485 driving chip module, an RS232 interface module, a JTAG interface module and an RS485 interface module; wherein,

the USB interface module is respectively connected with the LDO module, the RS232 driving chip module and the RS485 driving chip module and is used for transmitting USB signals and providing working voltages corresponding to the LDO module, the RS232 driving chip module and the RS485 driving chip module for the LDO module, the RS232 driving chip module and the RS485 driving chip module; the USB interface module is also used for being connected with a computer and providing target voltage for the multi-mode serial port conversion device;

the LDO module is connected with the USB-to-serial port chip module and is used for converting the target voltage into working voltage corresponding to the USB-to-serial port chip module;

the USB-to-serial port chip module is also respectively connected with the USB interface module and the JTAG interface module and is used for converting the USB signals into JTAG signals and transmitting the JTAG signals to the JTAG interface module;

the RS485 driving chip module is also respectively connected with the USB interface module and the RS485 interface module and is used for converting the USB signal into a first RS485 signal and transmitting the first RS485 signal to the RS485 interface module;

the RS232 driving chip module is also respectively connected with the USB interface module and the RS232 interface module and is used for converting the USB signal into a first RS232 signal and transmitting the first RS232 signal to the RS232 interface module.

In one embodiment provided in the present application, the USB-to-serial chip module is further connected to the RS485 driver chip module and the RS232 driver chip module, respectively;

the USB-to-serial port chip module is further used for converting the USB signal into a UART signal and transmitting the UART signal to the RS485 driving chip module, and the RS485 driving chip module is further used for converting the UART signal into a second RS485 signal and transmitting the second RS485 signal to the RS485 interface module;

the USB-to-serial port chip module is further used for converting the USB signal into a UART signal and transmitting the UART signal to the RS232 driving chip module, and the RS232 driving chip module is further used for converting the UART signal into a second RS232 signal and transmitting the second RS232 signal to the RS232 interface module.

In one embodiment provided herein, the USB interface module includes: a USB2.0 interface and a first antistatic device.

In one embodiment provided herein, the LDO module includes an LDO chip, a filter capacitor, and magnetic beads.

In one embodiment provided herein, the RS232 interface module includes: and the RS232 connector and the second antistatic device.

In one embodiment provided herein, the RS485 interface module includes: and the RS485 connector and the third antistatic device.

In one embodiment provided herein, the JTAG interface module includes: JTAG connector and fourth antistatic device.

In an embodiment provided in the present application, the type of the USB-to-serial chip included in the USB-to-serial chip module is FT2233HL.

In one embodiment provided in the present application, the RS485 driver chip module includes an RS485 driver chip of a type MAX3485EESA.

In a second aspect, the present application provides a multi-mode serial port conversion system, which is characterized in that the system includes: the device comprises a USB interface module, an LDO module, an RS232 driving chip module, a USB-to-serial port chip module, an RS485 driving chip module, an RS232 interface module, a JTAG interface module, an RS485 interface module, a computer, a first terminal, a second terminal and a third terminal; wherein,

the USB interface module is respectively connected with the LDO module, the RS232 driving chip module and the RS485 driving chip module and is used for transmitting USB signals and providing working voltages corresponding to the LDO module, the RS232 driving chip module and the RS485 driving chip module for the LDO module, the RS232 driving chip module and the RS485 driving chip module; the USB interface module is also used for being connected with the computer to provide target voltage for the multi-mode serial port conversion device;

the LDO module is connected with the USB-to-serial port chip module and is used for converting the target voltage into working voltage corresponding to the USB-to-serial port chip module;

the RS232 interface module is connected with the first terminal, the JTAG interface module is connected with the second terminal, and the RS485 interface module is connected with the third terminal;

the RS232 driving chip module is also respectively connected with the USB interface module and the RS232 interface module and is used for converting the USB signal into a first RS232 signal and transmitting the first RS232 signal to the first terminal through the RS232 interface module;

the USB-to-serial port chip module is also respectively connected with the USB interface module and the JTAG interface module and is used for converting the USB signal into a JTAG signal and transmitting the JTAG signal to the second terminal through the JTAG interface module;

the RS485 driving chip module is also respectively connected with the USB interface module and the RS485 interface module and is used for converting the USB signal into a first RS485 signal, and the first RS485 signal is transmitted to the third terminal through the RS485 interface module.

A multi-mode serial port conversion apparatus, comprising: the device comprises a USB interface module, an LDO module, an RS232 driving chip module, a USB-to-serial port chip module, an RS485 driving chip module, an RS232 interface module, a JTAG interface module and an RS485 interface module; the USB interface module is respectively connected with the LDO module, the RS232 driving chip module and the RS485 driving chip module and is used for transmitting USB signals and providing working voltages corresponding to the LDO module, the RS232 driving chip module and the RS485 driving chip module for the LDO module, the RS232 driving chip module and the RS485 driving chip module; the USB interface module is also used for being connected with a computer and providing target voltage for the multi-mode serial port conversion device; the LDO module is connected with the USB-to-serial port chip module and is used for converting the target voltage into working voltage corresponding to the USB-to-serial port chip module; the USB-to-serial port chip module is also respectively connected with the USB interface module and the JTAG interface module and is used for converting the USB signals into JTAG signals and transmitting the JTAG signals to the JTAG interface module; the RS485 driving chip module is also respectively connected with the USB interface module and the RS485 interface module and is used for converting the USB signal into a first RS485 signal and transmitting the first RS485 signal to the RS485 interface module; the RS232 driving chip module is also respectively connected with the USB interface module and the RS232 interface module and is used for converting the USB signal into a first RS232 signal and transmitting the first RS232 signal to the RS232 interface module. According to the embodiment of the application, serial port communication modules of 3 modes of RS232, RS485 and JTAG are integrated together, so that conversion between USB signals and multi-mode serial ports is realized, debugging equipment and wiring harnesses are saved, the efficiency and flexibility of equipment development and debugging are improved, and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a block diagram of a multi-mode serial port conversion device in one embodiment;

fig. 2 is a block diagram of a multi-mode serial port conversion system according to another embodiment.

Reference numerals:

a USB interface module 110; LDO module 120; RS232 driver chip module 130; a USB-to-serial chip module 140; the RS485 driver chip module 150; an RS232 interface module 160; JTAG interface module 170; RS485 interface module 180.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other ways than those herein described and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not limited to the specific embodiments disclosed below.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

When the electronic product is developed and debugged, a serial port is used as an interface for communicating with a computer. The most common communication interface on a computer is USB, so USB-to-serial interface is the most common device used in development and debugging of electronic devices. However, the level and communication protocol of different types of serial ports are different, so that the serial ports of different types cannot be commonly used. When different serial ports exist on the product, the serial port equipment of a corresponding type is needed to be connected with a computer, so that a device for converting various USB (universal serial bus) into serial ports needs to be equipped when one product is developed, and the device is not flexible in use.

In view of the foregoing, it is necessary to provide a multimode serial port conversion device with high flexibility in use and supporting multiple types of serial port use.

As shown in fig. 1, the present application provides a multi-mode serial port conversion device, including: USB interface module 110, LDO module 120, RS232 driver chip module 130, USB to serial port chip module 140, RS485 driver chip module 150, RS232 interface module 160, JTAG interface module 170, and RS485 interface module 180; wherein,

the USB interface module 110 is respectively connected to the LDO module 120, the RS232 driving chip module 130 and the RS485 driving chip module 150, and is configured to transmit USB signals, and further configured to provide the working voltages corresponding to the LDO module 120, the RS232 driving chip module 130 and the RS485 driving chip module 150; the USB interface module 110 is further configured to connect to a computer, and provide a target voltage to the multi-mode serial port conversion device;

the LDO module 120 is connected to the USB-to-serial chip module 140, and is configured to convert the target voltage into a working voltage corresponding to the USB-to-serial chip module 140;

the USB-to-serial port chip module 140 is further connected to the USB interface module 110 and the JTAG interface module 170, respectively, and is configured to convert the USB signal into a JTAG signal, and transmit the JTAG signal to the JTAG interface module 170;

the RS485 driver chip module 150 is further connected to the USB interface module 110 and the RS485 interface module 180, and is configured to convert the USB signal into a first RS485 signal, and transmit the first RS485 signal to the RS485 interface module 180;

the RS232 driver chip module 130 is further connected to the USB interface module 110 and the RS232 interface module 160, respectively, and is configured to convert the USB signal into a first RS232 signal, and transmit the first RS232 signal to the RS232 interface module 160.

Specifically, the computer is connected to the USB interface module 110, and provides a target voltage to the multi-mode serial port conversion device, where the target voltage may be 5.0V.

According to the multi-mode serial port conversion device, serial port communication modules of RS232, RS485 and JTAG in 3 modes are integrated together, conversion of USB signals and multi-mode serial ports is achieved, the conversion of USB signals into RS232 signals, RS485 signals and JTAG signals can be achieved, meanwhile, the conversion of the RS232 signals, the RS485 signals and the JTAG signals into the USB signals can be achieved, debugging equipment and wiring harnesses are saved, equipment development and debugging efficiency and flexibility are improved, and cost is reduced.

As shown in fig. 1, in one embodiment provided in the present application, the USB-to-serial chip module 140 is further connected to the RS485 driver chip module 150 and the RS232 driver chip module 130, respectively;

the USB-to-serial port chip module 140 is further configured to convert the USB signal into a UART signal, and transmit the UART signal to the RS485 driver chip module 150, and the RS485 driver chip module 150 is further configured to convert the UART signal into a second RS485 signal, and transmit the second RS485 signal to the RS485 interface module 180;

the USB-to-serial chip module 140 is further configured to convert the USB signal into a UART signal, and transmit the UART signal to the RS232 driver chip module 130, and the RS232 driver chip module 130 is further configured to convert the UART signal into a second RS232 signal, and transmit the second RS232 signal to the RS232 interface module 160.

Based on this, the RS485 driver chip module 150 may convert the USB signal into the first RS485 signal or convert the UART signal into the second RS485 signal; the RS232 driver chip module 130 may convert the USB signal into a first RS232 signal or convert the UART signal into a second RS232 signal. The multi-mode serial port conversion device can be flexibly applied to a plurality of scenes and meets the use requirements.

In one embodiment provided herein, the USB interface module 110 includes: a USB2.0 interface and a first antistatic device.

In one embodiment provided herein, the LDO module 120 includes an LDO chip, a filter capacitor, and magnetic beads.

The LDO module 120 is used to convert the 5.0V operating voltage into 3.3V voltage to power the USB-to-serial chip module 140.

In one embodiment provided herein, the RS232 interface module 160 includes: and the RS232 connector and the second antistatic device.

In one embodiment provided herein, the RS485 interface module 180 includes: and the RS485 connector and the third antistatic device.

In one embodiment provided herein, the JTAG interface module 170 includes: JTAG connector and fourth antistatic device.

In one embodiment provided in the present application, the USB-to-serial chip module 140 includes a type of USB-to-serial chip of FT2233HL.

In one embodiment provided in the present application, the RS485 driver chip module 150 includes an RS485 driver chip of the type MAX3485EESA.

In one embodiment provided in the present application, the RS232 driver chip module 130 includes an RS232 driver chip of the type MAX232EXE.

The RS232 driving chip can be used for converting 0-3.3V voltage of UART signals into-15V to +15V voltage of RS232 signals so as to ensure that the RS232 signals of the device and RS232 signals of terminal equipment are normally communicated; the RS232 driving chip can be used for converting 0-3.3V voltage of UART signals into-7V to +12V voltage of RS485 signals so as to ensure that the RS485 signals of the device and RS232 signals of terminal equipment are normally communicated.

It should be noted that, the chip types used in the magnetic field generating device include, but are not limited to, the chip types described above, and the applicable chip types may be selected according to actual requirements, so long as the corresponding functions can be implemented.

As shown in fig. 2, the present application provides a multi-mode serial port conversion system, including: the USB interface module 110, the LDO module 120, the RS232 driving chip module 130, the USB-to-serial port chip module 140, the RS485 driving chip module 150, the RS232 interface module 160, the JTAG interface module 170, the RS485 interface module 180, the computer, the first terminal, the second terminal and the third terminal;

the USB interface module 110 is respectively connected to the LDO module 120, the RS232 driving chip module 130 and the RS485 driving chip module 150, and is configured to transmit USB signals, and further configured to provide the working voltages corresponding to the LDO module 120, the RS232 driving chip module 130 and the RS485 driving chip module 150; the USB interface module 110 is further configured to connect to the computer, and provide a target voltage to the multi-mode serial port conversion device;

the LDO module 120 is connected to the USB-to-serial chip module 140, and is configured to convert the target voltage into a working voltage corresponding to the USB-to-serial chip module 140;

the RS232 interface module 160 is connected to the first terminal, the JTAG interface module 170 is connected to the second terminal, and the RS485 interface module 180 is connected to the third terminal;

the RS232 driver chip module 130 is further connected to the USB interface module 110 and the RS232 interface module 160, and is configured to convert the USB signal into a first RS232 signal, and transmit the first RS232 signal to the first terminal through the RS232 interface module 160;

the USB-to-serial chip module 140 is further connected to the USB interface module 110 and the JTAG interface module 170, respectively, and is configured to convert the USB signal into a JTAG signal, and transmit the JTAG signal to the second terminal through the JTAG interface module 170;

the RS485 driver chip module 150 is further connected to the USB interface module 110 and the RS485 interface module 180, and is configured to convert the USB signal into a first RS485 signal, and transmit the first RS485 signal to the third terminal through the RS485 interface module 180.

According to the multi-mode serial port conversion system, serial port communication modules of RS232, RS485 and JTAG in 3 modes are integrated together, conversion of USB signals and multi-mode serial ports is achieved, the conversion of USB signals into RS232 signals, RS485 signals and JTAG signals can be achieved, meanwhile, the conversion of the RS232 signals, the RS485 signals and the JTAG signals into the USB signals can be achieved, the signal transmission among a plurality of terminal devices can be achieved, debugging equipment and wiring harnesses are saved, equipment development and debugging efficiency and flexibility are improved, and cost is reduced.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A multi-mode serial port conversion device, characterized in that the multi-mode serial port conversion device comprises: the device comprises a USB interface module, an LDO module, an RS232 driving chip module, a USB-to-serial port chip module, an RS485 driving chip module, an RS232 interface module, a JTAG interface module and an RS485 interface module; wherein,

the USB interface module is respectively connected with the LDO module, the RS232 driving chip module and the RS485 driving chip module and is used for transmitting USB signals and providing working voltages corresponding to the LDO module, the RS232 driving chip module and the RS485 driving chip module for the LDO module, the RS232 driving chip module and the RS485 driving chip module; the USB interface module is also used for being connected with a computer and providing target voltage for the multi-mode serial port conversion device;

the LDO module is connected with the USB-to-serial port chip module and is used for converting the target voltage into working voltage corresponding to the USB-to-serial port chip module;

the USB-to-serial port chip module is also respectively connected with the USB interface module and the JTAG interface module and is used for converting the USB signals into JTAG signals and transmitting the JTAG signals to the JTAG interface module;

the RS485 driving chip module is also respectively connected with the USB interface module and the RS485 interface module and is used for converting the USB signal into a first RS485 signal and transmitting the first RS485 signal to the RS485 interface module;

the RS232 driving chip module is also respectively connected with the USB interface module and the RS232 interface module and is used for converting the USB signal into a first RS232 signal and transmitting the first RS232 signal to the RS232 interface module.

2. The multi-mode serial port conversion device of claim 1, wherein the USB-to-serial port chip module is further connected to the RS485 driver chip module and the RS232 driver chip module, respectively;

the USB-to-serial port chip module is further used for converting the USB signal into a UART signal and transmitting the UART signal to the RS485 driving chip module, and the RS485 driving chip module is further used for converting the UART signal into a second RS485 signal and transmitting the second RS485 signal to the RS485 interface module;

the USB-to-serial port chip module is further used for converting the USB signal into a UART signal and transmitting the UART signal to the RS232 driving chip module, and the RS232 driving chip module is further used for converting the UART signal into a second RS232 signal and transmitting the second RS232 signal to the RS232 interface module.

3. The multi-mode serial port conversion device of claim 1, wherein the USB interface module comprises: a USB2.0 interface and a first antistatic device.

4. The multi-mode serial port conversion device of claim 1, wherein the LDO module comprises an LDO chip, a filter capacitor, and magnetic beads.

5. The multi-mode serial port conversion device of claim 1, wherein the RS232 interface module comprises: and the RS232 connector and the second antistatic device.

6. The multi-mode serial port conversion device of claim 1, wherein the RS485 interface module comprises: and the RS485 connector and the third antistatic device.

7. The multi-mode serial port conversion apparatus of claim 1, wherein the JTAG interface module comprises: JTAG connector and fourth antistatic device.

8. The multi-mode serial port conversion device of claim 1, wherein the USB-to-serial port chip module comprises a USB-to-serial port chip of FT2233HL type.

9. The multi-mode serial port conversion device of claim 1, wherein the RS485 driver chip module comprises an RS485 driver chip of the type MAX3485EESA.

10. A multi-mode serial port conversion system, the system comprising: the device comprises a USB interface module, an LDO module, an RS232 driving chip module, a USB-to-serial port chip module, an RS485 driving chip module, an RS232 interface module, a JTAG interface module, an RS485 interface module, a computer, a first terminal, a second terminal and a third terminal; wherein,

the USB interface module is respectively connected with the LDO module, the RS232 driving chip module and the RS485 driving chip module and is used for transmitting USB signals and providing working voltages corresponding to the LDO module, the RS232 driving chip module and the RS485 driving chip module for the LDO module, the RS232 driving chip module and the RS485 driving chip module; the USB interface module is also used for being connected with the computer to provide target voltage for the multi-mode serial port conversion device;

the LDO module is connected with the USB-to-serial port chip module and is used for converting the target voltage into working voltage corresponding to the USB-to-serial port chip module;

the RS232 interface module is connected with the first terminal, the JTAG interface module is connected with the second terminal, and the RS485 interface module is connected with the third terminal;

the RS232 driving chip module is also respectively connected with the USB interface module and the RS232 interface module and is used for converting the USB signal into a first RS232 signal and transmitting the first RS232 signal to the first terminal through the RS232 interface module;

the USB-to-serial port chip module is also respectively connected with the USB interface module and the JTAG interface module and is used for converting the USB signal into a JTAG signal and transmitting the JTAG signal to the second terminal through the JTAG interface module;

the RS485 driving chip module is also respectively connected with the USB interface module and the RS485 interface module and is used for converting the USB signal into a first RS485 signal, and the first RS485 signal is transmitted to the third terminal through the RS485 interface module.