CN210955059U

CN210955059U - Conversion module based on flexible application of industrial mainboard serial port

Info

Publication number: CN210955059U
Application number: CN201922131755.6U
Authority: CN
Inventors: 袁勤良
Original assignee: Shenzhen City Yako Automation Technology Co ltd
Current assignee: Shenzhen City Yako Automation Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-07
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a conversion module based on industry mainboard serial ports is nimble to be used, it includes at least bottom plate and board year 2 × 5 row's needle, level conversion chip, RS232 conversion chip and standard DB9 interface that just connect gradually on the bottom plate the utility model discloses a winding displacement links to each other serial ports conversion module and the last RS232 row's needle interface of mainboard to increase RS485 or RS422 and take the optical coupling to keep apart, RS485 and RS 422's quantity according to different customers' demand under the condition that does not change mainboard circuit, the quick diversified demand that satisfies the customer, and when having increased these ports, do not change the structure of complete machine, simple to operate, low cost.

Description

Conversion module based on flexible application of industrial mainboard serial port

Technical Field

The utility model relates to a mainboard serial ports signal transmission field specifically is a conversion module based on nimble application of industry mainboard serial ports.

Background

At present, the serial port number and the serial port working mode of an industrial mainboard on the market are determined when the mainboard is designed, and generally, when the mainboard is designed, only two standard DB9 serial port heads are exposed on an interface coastline of a rear panel, other serial ports are built on the motherboard in the form of 2x5 pin headers, which are often limited due to cost considerations and the area of the layout on the motherboard, other serial ports are only made into RS232 mode, so that the user can not select a plurality of different types of serial port working modes, therefore, when a user needs to use a plurality of interfaces with other modes, the user can only add a serial port module outside the whole machine, the method not only needs the externalization of the module and damages the integrity of the machine body, but also increases the use cost, and most of the additional serial port modules are purchased in the market, so that selective troubles and use risks are easily caused to customers.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a conversion module based on nimble application of industry mainboard serial ports, it places the serial ports electric connection on the mainboard in with the conversion module of a plurality of convertible types through the winding displacement, R485 with the customer pluralism, RS422 and take the optical coupling to keep apart RS485, RS422 port quantity demand is under the mainboard condition of not changing, realize nimble configuration, and pass through the screw fixation on the DB9 connector with the conversion module on the quick-witted case, need not to change quick-witted case, organism integrality has been guaranteed, the project time has been practiced thrift, the project cost has been saved.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a conversion module based on industry mainboard serial ports is nimble to be used includes at least bottom plate and board and is in 2 × 5 row needles, level conversion chip, RS232 conversion chip and standard DB9 interface that just connect gradually on the bottom plate.

Preferably, the RS232 conversion chip is an RS232 to RS485 chip and/or an RS232 to RS485 chip.

Preferably, the RS232 conversion chip is an RS232 to RS485 photoelectric isolation chip and/or an RS232 to RS485 photoelectric isolation chip.

Preferably, an optical coupler is further mounted on the base plate, and the optical coupler is connected in series between the level conversion chip and the RS232 conversion chip.

Preferably, a power isolation chip is further mounted on the bottom plate, and the power isolation chip is connected with the optical coupler.

Preferably, the level conversion chip adopts a MAX3232ESE chip.

Preferably, the optical coupler adopts a 6N137F optical coupler.

Preferably, the power isolation chip adopts a B0505LS-1W chip.

The beneficial effects of the utility model reside in that: this design is through the winding displacement with a plurality of convertible type conversion modules with place the serial ports electric connection on the mainboard in to pass through the screw fixation on the DB9 connector with the conversion module on quick-witted case, guaranteed the integrality of organism, reduced the cost of using, guaranteed the use quality of product, increased usable serial ports quantity, still can use the serial ports of different mode in a flexible way.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a conversion module based on flexible application of an industrial motherboard serial port according to embodiment 1;

fig. 2 is a schematic structural diagram of a conversion module based on flexible application of an industrial motherboard serial port according to embodiment 2.

Description of reference numerals:

the device comprises 1-2 × 5 pin headers, 2-level conversion chips, 3-optical couplers, 4-power isolation chips, 5-first RS232 conversion chips, 6-second RS232 conversion chips and 7-standard DB9 connectors.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, a conversion module based on flexible application of industrial motherboard serial ports at least comprises a bottom plate and 2 × 5

pin headers

1 and 2 × 5 pin headers 1 which are mounted on the bottom plate and connected in sequence, the 2 pin headers 1 are connected with a motherboard serial port to be converted through a flat cable, RS232 interface signals to be converted of the motherboard are connected to a level conversion chip 2, the level conversion chip 2 converts RS232 signal levels on the 2 × 5 pin headers 1 into TTL levels, the two RS232 conversion chips 5 are RS232 to RS485 chips and/or RS232 to RS422 chips respectively, an input end of the RS232 conversion chip 5 is directly connected with the level conversion chip 2 through a resistor, and an output end of the RS232 conversion chip is connected with a standard DB9 interface 7.

Further, the level shift chip 2 employs a MAX3232ESE chip.

Example 2

As shown in fig. 2, a conversion module based on flexible application of industrial motherboard serial ports at least comprises a bottom plate and 2 × 5

row pins

1 and 2 × 5 row pins 1 which are mounted on the bottom plate, wherein the 2 × row pins 1 and the 2 × row pins 1 are connected with a motherboard serial port which needs to be converted through a flat cable, RS232 interface signals which need to be converted by a motherboard are connected to a level conversion chip 2, the level conversion chip 2 converts RS232 signal levels on the 2 × 5 row pins 1 into TTL levels, an optocoupler 3 isolates the TTL signals, a power isolation chip 4 is connected with the optocoupler 3, two RS232 conversion chips 6 respectively convert RS232 into RS485 photoelectric isolation chips and/or RS232 into RS422 photoelectric isolation chips, the input end of each RS232 conversion chip is directly connected with the level conversion chip 2 through a resistor, and the output end of each RS232 conversion chip is connected with a standard DB 9.

Further, the level shift chip 2 employs a MAX3232ESE chip.

Further, the optical coupler 3 adopts a 6N137F optical coupler.

Further, the power isolation chip 4 adopts a B0505LS-1W chip.

The utility model discloses a winding displacement links to each other RS232 row needle interface on with serial ports conversion module and the mainboard to increase RS485 or RS422 and take the quantity that the optical coupling was kept apart, RS485 and RS422 according to different customers' demand under the condition that does not change mainboard circuit, the quick diversified demand that satisfies the customer, and when having increased these ports, do not change the structure of complete machine, simple to operate, low cost.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a conversion module based on flexible application of industry mainboard serial ports which characterized in that includes at least bottom plate and board and is in 2 × 5 row's of pins, level conversion chip, RS232 conversion chip and the standard DB9 interface that connects gradually on the bottom plate.

2. The conversion module based on flexible application of serial ports of industrial motherboards as claimed in claim 1, wherein said RS232 conversion chip is RS232 to RS485 chip and/or RS232 to RS485 chip.

3. The conversion module based on flexible application of serial ports of industrial motherboards as claimed in claim 1, wherein said RS232 conversion chip is RS232 to RS485 photoelectric isolation chip and/or RS232 to RS485 photoelectric isolation chip.

4. The conversion module based on flexible application of industrial motherboard serial ports as claimed in claim 3, wherein said backplane further carries an optical coupler, and said optical coupler is connected in series between said level conversion chip and said RS232 conversion chip.

5. The conversion module based on flexible application of industrial motherboard serial ports as claimed in claim 4, characterized in that a power isolation chip is further mounted on the bottom board, and the power isolation chip is connected with the optical coupler.

6. The conversion module based on flexible application of industrial motherboard serial ports as claimed in any one of claims 1 to 5, characterized in that said level conversion chip is MAX3232ESE chip.

7. The conversion module based on flexible application of industrial motherboard serial ports as claimed in any one of claims 3 to 5, characterized in that said optical coupler is 6N137F optical coupler.

8. The conversion module based on flexible application of serial ports of industrial motherboard of claim 5, wherein said power isolation chip is B0505LS-1W chip.