CN213024390U

CN213024390U - Six-in-one multi-serial-port mutual conversion module

Info

Publication number: CN213024390U
Application number: CN202021571786.XU
Authority: CN
Inventors: 周翠华; 李焕梅; 王晓哲; 吴艳玲
Original assignee: Hebei Hanguang Heavy Industry Ltd
Current assignee: Hebei Hanguang Heavy Industry Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-20
Anticipated expiration: 2030-07-31

Abstract

The invention discloses a six-in-one multi-serial port conversion module which is rich in interfaces, strong in performance and simple and convenient to operate. Comprises a main control part, an interface part and an operation part; the main control part is a CPLD chip. The interface part comprises 6 types of serial ports, namely a DB9 male serial port, a DB9 female serial port, a single-ended serial port, a 422 serial port, a 485 serial port and a USB interface; the interface part is connected to the CPLD chip. The operation part is a dial switch; each dial on the dial switch corresponds to one type of serial port; the dial switch is directly connected with the CPLD chip; when the dials corresponding to the two types of serial ports are pressed simultaneously, the dial switch transmits a signal corresponding to the simultaneous pressing of the dials corresponding to the two types of serial ports to the CPLD chip. A signal receiving circuit and a data conversion circuit are arranged in the CPLD chip; the signal receiving circuit receives signals which correspond to dial codes of the two types of serial ports and are pressed simultaneously and is connected with the two types of serial ports; the data conversion circuit performs pairwise mutual conversion on the two types of serial port data which are connected.

Description

Six-in-one multi-serial-port mutual conversion module

Technical Field

The utility model relates to a multiple serial ports equipment technical field, concretely relates to six-in-one multiple serial ports module of transferring each other.

Background

At present, the application of communication with other devices through serial ports takes a great proportion by taking a computer, an MCU and the like as cores, and particularly the field of industrial control. Direct interconnection communication between various serial devices is often impossible for reasons including: 1. the connector used is various in forms, including a DB9 female connector, a DB9 male connector, an RJ45, a 2.54 pin row, a 2EDG5.08 wiring terminal and the like; 2. the electrical types of serial port signals are divided into a single-end type and a differential type; 3. the serial port signal voltages are inconsistent and comprise +/-12V, +5V, +3.3V and the like. This brings great inconvenience to the study of college students, the research and development of company products, the product debugging of production departments, and the like.

The equipment on the current market has the problems of insufficient interface types, insufficient data transmission rate reaching the highest requirement, insufficient response timeliness, insufficient convenience in operation and the like.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a six-in-one multi-serial port module of each other is a rich, powerful and easy and simple to handle multi-serial port module of each other of interface.

In order to achieve the above purpose, the technical scheme of the utility model is that: the six-in-one multi-serial port mutual conversion module comprises a main control part, an interface part and an operation part;

the main control part is a CPLD chip.

The interface part comprises 6 types of serial ports, namely a DB9 male serial port, a DB9 female serial port, a single-ended serial port, a 422 serial port, a 485 serial port and a USB interface; the interface part is connected to the CPLD chip.

The operation part is a dial switch; each dial on the dial switch corresponds to one type of serial port; the dial switch is directly connected with the CPLD chip; when the dials corresponding to the two types of serial ports are pressed simultaneously, the dial switch transmits a signal corresponding to the simultaneous pressing of the dials corresponding to the two types of serial ports to the CPLD chip.

A signal receiving circuit and a data conversion circuit are arranged in the CPLD chip; the signal receiving circuit receives signals which correspond to dial codes of the two types of serial ports and are pressed simultaneously and is connected with the two types of serial ports; the data conversion circuit performs pairwise mutual conversion on the two types of serial port data which are connected.

Furthermore, the device also comprises a display part which is used for displaying the data transmission condition of each serial port of the interface part.

Further, the auxiliary plug of the male DB9 is also used to realize interconnected communication with the RJ 45.

Further, the dial switch comprises 1-6 switch codes, the corresponding numbers are respectively the 1 st-6 th switch codes, wherein the 1 st switch code corresponds to the USB interface; the 2 nd switch code corresponds to a DB9 female serial port; the 3 rd switch code corresponds to a DB9 male serial port; the 4 th switch code corresponds to a 422 serial port; the 5 th switch code corresponds to a 485 serial port; the 6 th switch code corresponds to the TTL serial port.

Has the advantages that:

the utility model discloses the effectual intercommunication that realizes the serial ports has simplified wiring and operation. The module is small and easy to carry. The power can be directly supplied through the USB interface or supplied through a separate power supply interface. Meanwhile, one module basically covers all serial port conversion types, and waste of purchasing a plurality of other modules is reduced to the maximum extent.

Drawings

Fig. 1 is a schematic diagram of the structure of the serial port conversion of the utility model 6.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

The utility model provides a six-in-one multi-serial port mutual conversion module, as shown in figure 1.

The module comprises a main control part, an interface part and an operation part.

The main control part is a CPLD chip;

the interface part comprises 6 types of serial ports, namely a DB9 male serial port, a DB9 female serial port, a single-ended serial port, a 422 serial port, a 485 serial port and a USB interface; the interface part is connected to the CPLD chip. The embodiment of the utility model provides an in, adopted the serial ports of 6 different grade types to draw forth the mode, compatible voltage signal such as 12V, +5V, +3.3V, single-ended, difference. The serial port signals are led out through a DB9 female connector, a DB9 male connector, a 2EDG5.08 wiring terminal and the like, wherein the auxiliary plug of the DB9 male connector can also realize interconnection communication or other extension communication with RJ 45. Meanwhile, the module is also integrated with a USB interface, which is greatly convenient for the interconnection communication with the computer.

The operation part is a dial switch; each dial on the dial switch corresponds to one type of serial port. The dial switch is directly connected with the CPLD chip; when the dials corresponding to the two types of serial ports are pressed simultaneously, the dial switch transmits a signal corresponding to the simultaneous pressing of the dials corresponding to the two types of serial ports to the CPLD chip.

The embodiment of the utility model provides an in, still include the display part, the display part is used for showing the data transmission condition of each serial ports of interface part. The module panel integrates the power indicator and the serial data receiving and transmitting indicator, and the existence of communication data can be checked through the states of the indicators, so that the module panel is further convenient to learn and debug.

In the embodiment of the utility model, the dial switch comprises 1-6 switch codes, the corresponding numbers are respectively the 1 st-6 th switch codes, wherein the 1 st switch code corresponds to the USB interface; the 2 nd switch code corresponds to a DB9 female serial port; the 3 rd switch code corresponds to a DB9 male serial port; the 4 th switch code corresponds to a 422 serial port; the 5 th switch code corresponds to a 485 serial port; the 6 th switch code corresponds to the TTL serial port.

In summary, the above is merely a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The six-in-one multi-serial port mutual conversion module is characterized by comprising a main control part, an interface part and an operation part;

the main control part is a CPLD chip;

the interface part comprises 6 types of serial ports, namely a DB9 male serial port, a DB9 female serial port, a single-ended serial port, a 422 serial port, a 485 serial port and a USB interface; the interface part is connected to the CPLD chip;

the operation part is a dial switch; each dial on the dial switch corresponds to one type of serial port; the dial switch is directly connected with the CPLD chip; when the dials corresponding to the two types of serial ports are pressed simultaneously, the dial switch transmits a signal that the dials corresponding to the two types of serial ports are pressed simultaneously to the CPLD chip;

2. The module according to claim 1, further comprising a display part for displaying data transmission status of each serial port of the interface part.

3. The module of claim 1 wherein the DB9 male auxiliary plug is also used to enable interconnect communications with an RJ 45.

4. The module according to any one of claims 1 to 3, wherein the dial switch comprises 1 to 6 switch codes, the corresponding numbers are respectively the 1 st to 6 th switch codes, wherein the 1 st switch code corresponds to the USB interface; the 2 nd switch code corresponds to a DB9 female serial port; the 3 rd switch code corresponds to a DB9 male serial port; the 4 th switch code corresponds to a 422 serial port; the 5 th switch code corresponds to a 485 serial port; the 6 th switch code corresponds to the TTL serial port.