CN219676578U

CN219676578U - Converter for converting USB Type-C with indicator lamp into four-way RS232

Info

Publication number: CN219676578U
Application number: CN202320493976.1U
Authority: CN
Inventors: 王建晖; 黄文岐; 张立
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-09-12
Anticipated expiration: 2033-03-14

Abstract

The utility model provides a converter for converting an USB Type-C with indicator lamps into four-way RS232, which comprises an USB Type-C interface, a minimum system module, an integrated circuit chip MAX3232ESE, a voltage reduction module, an RS232 interface, 4 channels of 8 signal indicator lamps and 4 optional transmission channels, wherein the minimum system module is used for converting the USB Type-C interface into the four-way RS 232; the Type-c interface is connected with a computer; the Type-c interface is respectively connected with a minimum system module, a voltage reduction module and 4-channel 8 signal indicating lamps; the minimum system module is connected with the 4-channel 8 signal indicating lamps; the 4-channel 8 signal indicating lamps are connected with 4 selectable transmission channels; the minimum system module is connected with the MAX3232ESE of the integrated circuit chip; the 4 selectable transmission paths are connected with an RS232 interface; the RS232 interface is connected with the minimum system module; and the RS232 interface is connected with RS232 equipment. The utility model has the advantages of high communication efficiency, simple structure, convenient use, stable performance, status indication and the like.

Description

Converter for converting USB Type-C with indicator lamp into four-way RS232

Technical Field

The utility model relates to a converter, in particular to a converter for converting USB Type-C with an indicator lamp into four-way RS 232.

Background

Along with the rapid development of computers, computers play an important role in industrial production, mainly use computers to carry out data communication with industrial equipment through USB interfaces, however, the reliability and high efficiency requirements on interfaces are very high when computers and equipment are connected in the industry, USB is used as an external bus standard, USB can be divided into USB Type-A, USB Type-B and USB Type-C types, USB is used as transmission data and is additionally provided with a power supply function to ensure data transmission, the USB interfaces are usually used for standardizing the connection and communication of the computers and the external equipment in the industry, the USB interfaces can be connected with various peripheral devices, because equipment interfaces such as instruments and meters in the industry and control terminals are basically used for RS232, and a converter on a social interface is mostly an USB Type-A to RS232 interface and is mostly a channel, in order to make up for the defects of the existing converter, the USB Type-C Type is the latest interface technology, the USB Type-C is the most intuitive and occupies smaller space of a circuit board, faster transmission speed and stronger power transmission, in addition, the Type-C interface supports the double-side interfaces to be inserted into the interface, the interface is not used for switching the traditional Type-A to be a channel, or the traditional Type-C chip is replaced by a main chip, and the special interface is a channel of the Type-4, and the error is greatly designed to be replaced by a main channel, and the error chip is 32, and the error is greatly lost because the device is replaced by a main channel, and has the error-32.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to provide a converter for converting USB Type-C with indicator light into four-way RS232, comprising:

USB Type-c interface, minimum system module, integrated circuit chip MAX3232ESE, voltage reducing module, RS232 interface, 4 channel 8 signal indicator lamps, 4 channel selectable transmitting channels;

the Type-c interface is connected with a computer; the Type-c interface is respectively connected with a minimum system module, a voltage reduction module and 4-channel 8 signal indicating lamps; the minimum system module is connected with the 4-channel 8 signal indicating lamps; the 4-channel 8 signal indicating lamps are connected with 4 selectable transmission channels; the minimum system module is connected with the MAX3232ESE of the integrated circuit chip; the 4 selectable transmission paths are connected with an RS232 interface; the RS232 interface is connected with the minimum system module; and the RS232 interface is connected with RS232 equipment.

Further, the main chip of the minimum system module is a FT4232HL chip.

Further, the minimum system module is a high-speed USB to 4-path serial port module, the fastest speed supports 12Mbps, and 4-path serial ports work independently.

Further, the integrated circuit chip MAX3232ESE is used for level conversion of RS232 and COM.

Further, the step-down module is used for converting 5V into 3.3V to supply power for the minimum system module.

Compared with the prior art, the utility model has the advantages that:

(1) The latest USB Type-C Type latest interface technology is selected, so that faster transmission speed, stronger power transmission, more reliable data transmission and smaller volume can be realized, the characteristics of the front side and the back side do not need to be considered when the Type-C is accessed, and the trend of the PC terminal equipment is that the USB Type-C is used in a large number, so that the PC terminal equipment is more convenient to use.

(2) The FT4232HL is a USB-UART bridge chip with powerful functions, simplicity and good use, the FT4232HL main chip design converter can achieve reliable connection between the USB Type-C port and the RS232 port, data reading speed is high, time delay is avoided, overall power consumption is low, compatibility is good, meanwhile, 4 paths of RS232 interface data are provided, any paths of data cannot influence each other, 4 paths of data work independently, a plurality of RS232 ports can be controlled by one computer port, and the advantages of multi-borrow interface control can be achieved by one interface expansion.

(3) The utility model has the advantages of high communication efficiency, simple structure, convenient use and stable performance and has the status indication.

Drawings

The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.

Fig. 1 is a diagram showing a structure of a converter from USB Type-C to 4-way RS232 with indicator lights according to the present utility model.

Fig. 2 is a general flow chart of the communication control of the converter according to the embodiment of the utility model.

FIG. 3 is a diagram illustrating an embodiment of a USB Type-C16P interface connection.

Fig. 4 is a four-way communication wiring diagram of the FT4232HL main chip according to an embodiment of the present utility model.

FIG. 5 is a diagram of an embodiment of a MAX323ESE module according to the present utility model.

FIG. 6 is a wiring diagram of a voltage step-down module according to an embodiment of the utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The utility model provides a converter for converting an indicator lamp USB Type-C into 4 paths of RS232, wherein the converter system is shown in figure 1 and comprises:

the system comprises an USB Type-c interface, a minimum system module taking FT4232HL as a main chip, an integrated circuit chip MAX3232ESE, a voltage reduction module, an RS232 interface, 4 channels of 8 signal indicating lamps and 4 optional transmission channels;

The Type-C interface is used for connecting a computer, the FT4232H module is a high-speed USB-to-4-channel serial port module, 12Mbps is supported at the highest speed, and the 4-channel serial ports work independently. The four COM ports can be identified by only occupying one computer USB interface, namely 4-path serial port channels are expanded, and the level conversion of RS232 and COM is mainly completed by an integrated circuit chip MAX3232ESE, and the RS232 interface is used for connecting RS232 equipment, and a relatively common DB9 connector is selected. The power supply of the whole system is from +5V of the USB Type-C interface, and the FT4232H requires +3.3V voltage power supply, so that the voltage reduction module converts 5V into 3.3V to supply power to the FT4232HL chip.

As shown in FIG. 2, the signals are converted into 4 paths of serial port signals after being processed through USB Type-C to FT4232H chips, and then the signals output by the main chip are converted into 232 levels which can be received by equipment through a MAX232EXE protocol conversion chip, and RS232 is a DB9 connected with industrial equipment, wherein the industrial equipment is provided with a data transmitting and receiving signal indicating lamp. The power supply of the whole system is from +5V of the USB interface, and the FT4232H requires +3.3V voltage power supply.

As shown in FIG. 3, the interface is an USB Type-C16P interface, the USB Type-C is an USB interface appearance standard, has smaller volume than the Type-A and the Type-B, can be applied to a PC and an external device, and has the most intuitive advantage of thoroughly getting rid of the trouble of a plug wire, designing a forward and reverse pluggable interface, and avoiding damage to components caused by misplug or error. More importantly, the Type-C interface has strong compatibility and strong power supply capability, so that the Type-C interface becomes a standardized interface capable of connecting a PC, a smart phone, a storage device and expanding all electronic devices, unification of data transmission and power supply is realized, the USB Type-C16P has 2 pairs of USB D+/D-,1 pair of SBU,2 CCs and 4 VBUS and 4 lines.

As shown in FIG. 4, the main chip is FT4232HL, the FF4232H chip is produced by FIDI (Future Technology Devices International) company and is specially used for a level conversion chip from USB to RS232/RS485, the data transceiving and protocol conversion work is completed independently by the chip, and the FT4232H provides standard 4-way transmission TX and reception RX pin output and input lines, so that the connection mode with the peripheral equipment is very flexible and convenient, and the chip is cured in the whole interface protocol without additional programming.

As shown in fig. 5, the output stage of the MAX3232ESE proprietary low-dropout transmitter of the integrated circuit chip can realize real RS-232 performance when the power is supplied by a 3.0V to 5.5V power supply by using a dual charge pump, and the device only needs four external small-size charge pump capacitors of 0.1 uF. max3232 ensures a data rate of 120kbps while maintaining the RS-232 output level. max3232 has a two-way receiver and two-way driver, providing a 1uA off mode, effectively reducing efficiency and delaying battery life of the portable product. In the off mode, the receiver remains active, the external device is monitored, only 1uA supply current is consumed, and the pins, packaging and functions of MAX3232 are compatible with industry standards MAX242 and MAX232, respectively. Max3232 maintains the minimum transmitter output voltage of plus or minus 5.0V required by the RS-232 standard even when operating at high data rates.

As shown in FIG. 6, the main chip of the buck module is AMS1117, AMS1117-3.3 is a forward low-voltage-drop voltage stabilizer with an output voltage of 3.3V, the buck module is suitable for a high-efficiency linear voltage stabilizer, and an overheat protection and current limiting circuit is integrated in the AMS1117, so that the buck module is the best choice for power supply and a portable computer.

While embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The converter is characterized by comprising an USB Type-C interface, a minimum system module, an integrated circuit chip MAX3232ESE, a voltage reduction module, an RS232 interface, 4 channels of 8 signal indication lamps and 4 optional transmission channels;

2. The converter with indicator light according to claim 1, wherein the main chip of the minimum system module is a FT4232HL chip.

3. The converter with indicator light according to claim 1, wherein the minimum system module is a high-speed USB-to-4 serial port module, the fastest speed supports 12Mbps, and the 4 serial ports work independently.

4. The converter of claim 1, wherein the integrated circuit chip MAX3232ESE is used for level conversion of RS232 and COM.

5. The converter of claim 1, wherein the buck module is configured to convert 5V to 3.3V for powering a minimum system module.