CN212278375U

CN212278375U - Novel special host computer of module communication is kept apart to multiple serial ports

Info

Publication number: CN212278375U
Application number: CN202021161422.4U
Authority: CN
Inventors: 汪顺龙
Original assignee: Hangzhou Xindongtian Intelligent Technology Co ltd
Current assignee: Hangzhou Xindongtian Intelligent Technology Co ltd
Priority date: 2020-06-20
Filing date: 2020-06-20
Publication date: 2021-01-01
Anticipated expiration: 2030-06-20

Abstract

The utility model relates to a novel special host computer of module communication is kept apart to multiple serial ports, including the host computer body, this internal serial ports that is provided with of host computer keeps apart module, communication module, programmable logic device, power, the serial ports is kept apart the module and is included a plurality of isolation serial ports, it is provided with the division board to keep apart between the serial ports, the division board passes through the electric current line number and forms magnetism isolation function, keep apart module, communication module, programmable logic device, power electrical property and link to each other, communication module includes opto-coupler isolation device, accomplish serial signals conversion between opto-coupler isolation device and the isolation serial ports of isolation module, the power provides operating voltage for programmable logic device. The utility model discloses can shield various interference signal in scene and harmful signal, guarantee simultaneously that output signal does not attenuate, provide the high accuracy signal.

Description

Novel special host computer of module communication is kept apart to multiple serial ports

Technical Field

The utility model relates to an keep apart the communication technology field, especially relate to a novel special host computer of module communication is kept apart to multiple serial ports.

Background

RS232, an earlier-identified serial communication interface standard, is widely used for communication connection between a master controller and various devices in computers, various peripheral devices and industrial control, and is a standard interface of data terminal devices. However, the existing RS232 serial communication technology has some disadvantages: the standard adopts a common-ground transmission mode, common-mode interference is easy to generate, the communication isolation effect of the multi-serial-port module is not good, and the structure is relatively complex.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of background art existence, the utility model relates to a novel special host computer of module communication is kept apart to multiple serial ports according to above-mentioned problem, has designed a host computer that can solve above-mentioned problem, adopts the isolation function of magnetic isolation technique assurance isolator: the input/output and the power supply are fully isolated, various field interference signals and harmful signals can be shielded, meanwhile, the output signals are not attenuated, and high-precision signals are provided.

The utility model relates to a novel special host computer of module communication is kept apart to multiple serial ports, including the host computer body, this internal serial ports that is provided with of host computer keeps apart module, communication module, programmable logic device, power, the serial ports is kept apart the module and is included a plurality of isolation serial ports, it is provided with the division board to keep apart between the serial ports, the division board passes through the electric current line number and forms magnetism isolation function, keep apart module, communication module, programmable logic device, power electrical property and link to each other, communication module includes opto-coupler isolation device, accomplish serial signals conversion between opto-coupler isolation device and the isolation serial ports of isolation module, the power provides operating voltage for programmable logic device.

By adopting the scheme, the optical coupling isolation device provides an isolation function for circuit communication, so that the transceiver circuit is in an isolation state, the transceiver electrical connection is effectively blocked, and the common-mode interference is reduced.

Further, the isolated serial port comprises an RS232 signal input port, an RS232 signal output port, and a 232 communication interface.

By adopting the scheme, the interference between the interfaces is reduced through the isolation plate.

Further, the optical coupling isolation device comprises a transmitting optical coupling group and a receiving optical coupling group.

By adopting the scheme, the optical coupling isolation device receives and transmits separately, and interference is prevented.

Further, the optical coupling isolation device is an eight-way optical coupler.

By adopting the scheme, 8-path ports can be connected by one group of isolators.

Further, the communication interface of the programmable logic device is in signal connection with the 232 communication interface, and the programmable logic device transmits information to the designated controller through the 232 communication interface.

By adopting the scheme, the signal receiving can be appointed, and the operation is convenient.

Furthermore, the power supply adopts a DC/DC isolation device to provide an isolation electric ground for isolating the serial port signal.

By adopting the scheme, the power supply provides working voltage for each module.

Furthermore, a level conversion chip is adopted between the optical coupling isolation device and the isolation serial port of the isolation module to complete isolation serial port signal conversion.

By adopting the scheme, signals sent by the peripheral equipment in the receiving process are converted into TTL levels through the RS232-TTL level conversion chip, received to the programmable logic device through corresponding optocouplers in the receiving optocoupler group (consisting of 8 optical couplers), processed and sent to the TTL-RS232 level conversion chip to convert the TTL levels into RS232 levels, and received to the serial port bus of the computer or the industrial personal computer.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic diagram of a serial port isolation module according to an embodiment of the present invention.

Fig. 2 is a schematic view of an electrical connection structure according to an embodiment of the present invention.

Reference numeral, 1, a main body; 2. a serial port isolation module; 21. isolating the serial port; 211. an RS232 signal input port; 212. an RS232 signal output port; 213. 232 a communication interface; 22. a separator plate; 3. a communication module; 31. an opto-isolator device; 311. a transmitting optical coupling group; 312. receiving an optical coupling group; 4. a programmable logic device; 5. a power source; 6. and a level conversion chip.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described and discussed below with reference to the accompanying drawings of the present invention, and it is obvious that only some examples, not all examples, of the present invention are described herein, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

For the convenience of understanding the embodiments of the present invention, the following detailed description will be given by way of example with reference to the accompanying drawings, and the embodiments are not limited to the embodiments of the present invention.

The embodiment 1 of the utility model refers to fig. 1, fig. 2 and shows, including host computer body 1, host computer body 1 is provided with serial ports isolation module 2 on the surface, serial ports isolation module 2 includes a plurality of isolation serial ports 21 and is located every division board 22 of keeping apart between the serial ports 21, it includes RS232 signal input port 211, RS232 signal output port 212 and 232 communication interface 213 to keep apart serial ports 21. The host body 1 is internally provided with a communication module 3, a programmable logic device 4 and a level conversion chip 6, the communication module 3 comprises an optical coupling isolation device 31, and the optical coupling isolation device 31 comprises a transmitting optical coupling group 311 and a receiving optical coupling group 312. The programmable logic device 4 is a CPLD. The power supply 5 adopts a DC/DC isolation device to provide isolation electric ground for isolating serial port 21 signals. The isolation module, the communication module 3, the programmable logic device 4 and the power supply 5 are electrically connected.

The multi-path isolation enters through the RS232 signal input port 211, is converted into TTL level through the level conversion chip 6, is led to the programmable logic device 4 after coming out, is sent out through the transmitting optocoupler set 311, is converted into RS232 level through the level conversion chip 6, is transmitted to the RS232 signal output port 212 and is transmitted to the corresponding serial port.

In the receiving process, an external signal is converted into a TTL level through the RS232 signal output port 212 and the level conversion chip 6, the TTL level is transmitted to the receiving optocoupler group 312, a corresponding optocoupler in the receiving optocoupler group 312 (composed of 8 optical couplers) receives the programmable logic device 4, the optocoupler is processed and then transmitted to the level conversion chip 6, and the optocoupler is converted into an RS232 level and then received into a serial port bus of a computer or an industrial personal computer. The optical coupling circuit, the isolation serial port 21 and the isolation power supply 5 provide an isolation function, so that the receiving and transmitting circuit is in an isolation state, the receiving and transmitting electrical connection is effectively blocked, and the common-mode interference is reduced.

The utility model discloses output makes the security and the interference immunity ability of return circuit signal improve greatly after keeping apart the interference processing, improves system reliability. The compatibility is strong, small in size and convenient to install.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a novel special host computer of module communication is kept apart to multiple serial ports, includes the host computer body, its characterized in that: this internal serial ports isolation module, communication module, programmable logic device, power of being provided with of host computer, serial ports isolation module includes a plurality of isolation serial ports, be provided with the division board between the isolation serial ports, the division board passes through the electric current line number and forms magnetism isolation function, isolation module, communication module, programmable logic device, power electrical property link to each other, communication module includes opto-coupler isolation device, accomplish serial ports signal conversion between opto-coupler isolation device and the isolation serial ports of isolation module, the power provides operating voltage for programmable logic device.

2. The novel multi-serial port isolation module communication special host computer of claim 1, characterized in that: the isolation serial port comprises an RS232 signal input port, an RS232 signal output port and a 232 communication interface.

3. The novel multi-serial port isolation module communication special host computer of claim 2, characterized in that: the optical coupling isolation device comprises a transmitting optical coupling group and a receiving optical coupling group.

4. The novel multi-serial port isolation module communication special host computer of claim 3, characterized in that: the optical coupling isolation device is an eight-path optical coupler.

5. The novel multi-serial port isolation module communication special host computer of claim 4, characterized in that: the communication interface of the programmable logic device is in signal connection with the 232 communication interface, and the programmable logic device transmits information to the designated controller through the 232 communication interface.

6. The novel multi-serial port isolation module communication special host computer of claim 5, characterized in that: the power supply adopts a DC/DC isolation device to provide isolation electric ground for isolating serial port signals.

7. The novel multi-serial port isolation module communication special host computer of claim 6, characterized in that: and a level conversion chip is adopted between the optical coupling isolation device and the isolation serial port of the isolation module to complete the signal conversion of the isolation serial port.