CN219642237U

CN219642237U - Combined small-sized modularized serial port card

Info

Publication number: CN219642237U
Application number: CN202320403957.5U
Authority: CN
Inventors: 罗威; 向会耀; 李林; 张国勇
Original assignee: Suzhou Apqi Internet Of Things Technology Co ltd
Current assignee: Suzhou Apqi Internet Of Things Technology Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-09-05
Anticipated expiration: 2033-03-07

Abstract

The utility model relates to a combined small-sized modularized serial port card, which comprises a carrier plate, wherein a conversion chip is arranged on the carrier plate, and a plurality of conversion modules are arranged on one side opposite to the conversion chip; the conversion module is connected with the carrier plate through a first serial port and a second serial port, the first serial port is electrically connected with the conversion chip, the second serial port is electrically connected with a fourth serial port arranged on the carrier plate, and the fourth serial port is an output end. The product independently makes the 5 most common serial port forms of RS232/RS422/RS485/RS422 with isolation/RS 485 with isolation into independent modules, and realizes that a plurality of serial port expansion cards can be made in the same PCB volume by utilizing the carrier of the carrier plate, thereby having great advantages in cost, assembly efficiency and volume.

Description

Combined small-sized modularized serial port card

Technical Field

The utility model relates to the technical field of serial port communication, in particular to a combined small-sized modularized serial port card.

Background

In the current industrial application, the serial port is basically a necessary interface as a communication port, and is also a communication interface used in a large amount, and an industrial control computer is at least provided with 2 serial ports or 10 serial ports, but the serial ports also have various protocols, such as three most commonly used interfaces of RS232/RS422/RS485, and the interfaces like RS422/RS485 are different from each other with isolation and without isolation, and the interfaces of RS232/RS422/RS485 adopt a DB9 connector as a standard interface, but the definitions corresponding to different communication protocols are different. The mode of expanding serial ports is not flexible enough, RS232/RS422/RS485 is used as three most common serial port communication interfaces, flexible switching cannot be achieved on the same industrial personal computer, if one expansion card needs to support both RS232 and RS422, the expansion card needs to be added or replaced, the use cost is increased, and inconvenience is caused by frequent replacement, so that the utility model develops a combined type miniature modular serial port card to solve the problems in the prior art.

Disclosure of Invention

The utility model aims at: a combined small modular serial port card is provided to solve the problem that a single expansion card in the prior art does not support multiple signal conversion.

The technical scheme of the utility model is as follows: the combined small-sized modularized serial port card comprises a carrier plate, wherein a conversion chip is arranged on the carrier plate, and a plurality of conversion modules are arranged on one side opposite to the conversion chip;

the conversion module is connected with the carrier plate through a first serial port and a second serial port, the first serial port is electrically connected with the conversion chip, the second serial port is electrically connected with a fourth serial port arranged on the carrier plate, and the fourth serial port is an output end.

Preferably, a third serial port connected with the bus signal is further arranged at the end part of the carrier plate, the third serial port is arranged at one side opposite to the fourth serial port, and the third serial port is further electrically connected with the conversion chip.

Preferably, the fourth serial port is a hole type connector, and the three second serial ports are respectively connected with different pinholes of the fourth serial port.

Preferably, three conversion modules are provided, and three corresponding first serial ports and three corresponding second serial ports are also provided.

Preferably, the conversion module converts the TTL signal converted by the conversion chip into one or two of RS232 or RS422 or RS485 or RS422 band isolation signals or RS485 band isolation signals.

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

(1) The product independently makes the 5 most common serial port forms of RS232/RS422/RS485/RS422 with isolation/RS 485 with isolation into independent modules, and realizes that a plurality of serial port expansion cards can be made in the same PCB volume by utilizing the carrier of the carrier plate, thereby having great advantages in cost, assembly efficiency and volume;

(2) The conversion module can be replaced with more demands, increased or reduced and convenient to use.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples:

FIG. 1 is a schematic diagram of a front view of a carrier plate according to the present utility model;

FIG. 2 is a schematic diagram of a rear view of the carrier plate according to the present utility model;

FIG. 3 is a schematic diagram of a front view of a conversion module according to the present utility model;

FIG. 4 is a schematic diagram of a rear view of a conversion module according to the present utility model;

FIG. 5 is a schematic diagram of a modular serial card of the present utility model in FIG. 1;

fig. 6 is a schematic structural diagram 2 of a modular serial port card according to the present utility model.

Wherein: the device comprises a carrier plate 1, a fourth serial port 11, a third serial port 12, a conversion chip 2, a conversion module 3, a first serial port 31 and a second serial port 32.

Detailed Description

The following describes the present utility model in further detail with reference to specific examples:

as shown in fig. 1-6, a combined small-sized modularized serial port card comprises a carrier plate 1, wherein a conversion chip 2 is arranged on the carrier plate 1, and a plurality of conversion modules 3 are arranged on one side opposite to the conversion chip 2; the conversion module 3 is connected with the carrier plate 1 through the first serial port 31 and the second serial port 32, and the conversion module 3 converts TTL signals converted by the conversion chip 2 into one or two of RS232 or RS422 or RS485 or RS422 band isolation signals or RS485 band isolation signals. The first serial port 31 is electrically connected with the conversion chip 2, the second serial port 32 is electrically connected with the fourth serial port 11 arranged on the carrier plate 1, and the fourth serial port 11 is an output end.

The end part of the carrier plate 1 is also provided with a third serial port 12 connected with a bus signal, the third serial port 12 is arranged on one side opposite to the fourth serial port 11, and the third serial port 12 is also electrically connected with the conversion chip 2. The fourth serial port 11 is a hole type connector, and the three second serial ports 32 are respectively connected with different pinholes of the fourth serial port 11.

One, two or more conversion modules 3 may be set according to the need, and the corresponding first serial ports 31 and second serial ports 32 are also set according to the number of the conversion modules 3, or at least the number of the first serial ports 31 or the second serial ports 32 is greater than or equal to the number of the conversion modules 3. In this embodiment, taking three conversion modules 3 as examples, the first serial port 31 and the second serial port 32 are also respectively set to three; the third serial port 12 may be an MXM golden finger terminal, or may be a pinhole socket, etc., and the carrier board 1 is connected to a motherboard on an industrial personal computer or other host through the third serial port 12, to connect the LPC signal to the carrier board 1; then the LPC signal is converted into six paths of TTL signals through a conversion chip 2 on the loading board 1; six TTL signals are distributed to the first serial port 31 in an average mode, and two TTL signals are distributed to each serial port; after that, through the conversion of the conversion module 3, the TTL signals of each first serial port 31 are converted into five signals of RS232/RS422/RS485/RS422 with isolation/RS 485 with isolation, and each conversion module 3 carries out the conversion of the TTL signals of two paths; finally, the output is sent to the fourth serial port 11 through the second serial port 32 and is output to the outside. For example, as shown in fig. 5, 3 RS422/RS485 conversion modules 3 are assembled, so that six paths of RS422/485 signals are finally led out; as shown in FIG. 6, an RS422/RS485 conversion module 3 is assembled, so that only two paths of RS422/485 signals are led out; of course, random combination can be performed in the 5 signal modules with isolation of RS232/RS422/RS485/RS422 and RS485, and tens of different modules can be combined.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same according to the content of the present utility model, and are not intended to limit the scope of the present utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments and that the present utility model may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present utility model be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The combined small-sized modularized serial port card is characterized by comprising a carrier plate, wherein a conversion chip is arranged on the carrier plate, and a plurality of conversion modules are arranged on one side opposite to the conversion chip;

2. A modular combined serial port card according to claim 1, wherein: the end part of the carrier plate is also provided with a third serial port connected with the bus signal, the third serial port is arranged on one side opposite to the fourth serial port, and the third serial port is also electrically connected with the conversion chip.

3. A modular combined serial port card according to claim 2, wherein: the fourth serial port is a hole type connector, and the three second serial ports are respectively connected with different pinholes of the fourth serial port.

4. A modular combined serial port card according to claim 3, wherein: the conversion modules are provided with three conversion modules, and the corresponding first serial ports and second serial ports are also provided with three conversion modules.

5. A modular combined serial port card according to claim 3, wherein: the conversion module converts TTL signals converted by the conversion chip into one or two of RS232 or RS422 or RS485 or RS422 band isolation signals or RS485 band isolation signals.