CN213403026U

CN213403026U - Optical fiber adapter of serial communication bus and optical fiber communication bus device thereof

Info

Publication number: CN213403026U
Application number: CN202022834704.2U
Authority: CN
Inventors: 张文斌
Original assignee: Beijing Great Power Technology Co ltd
Current assignee: Beijing Great Power Technology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-06-08
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to an optical fiber adapter of serial communication bus and an optical fiber communication bus device thereof, the optical fiber adapter of the serial communication bus comprises an optical splitter, a photoelectric receiving and sending unit, a receiving processing unit and a sending processing unit in sequence; the optical splitter comprises an optical fiber interface A, an optical fiber interface B and an optical fiber interface C, the optical fiber interfaces A and B are connected with an optical fiber bus, and the optical fiber interface C is used for connecting the optical splitter and the photoelectric transceiving unit; and the photoelectric transceiving unit converts the optical signal of the node into an electric signal and converts the electric signal into an optical signal. The utility model discloses the adapter adopts the optical fiber communication, realizes bus communication function, has communication speed height, distance characteristics such as far away, the interference killing feature is strong. The method plays an important role in the serial communication field bus.

Description

Optical fiber adapter of serial communication bus and optical fiber communication bus device thereof

Technical Field

The utility model relates to an information technology, automated control's information processing technology especially relate to a serial communication bus's optical fiber adapter and optical fiber communication bus device thereof.

Background

In special application environments such as factories, mines and traffic, severe problems such as complex electromagnetic environment, serious interference, more monitoring nodes, long transmission distance, large data volume and the like can be faced, and a system scheme designer and an implementer have insufficient knowledge on how to guarantee reliable communication by resisting interference, so that phenomena such as bus paralysis, data errors and the like which are unstable in communication can be caused, normal operation of the system is influenced, and safety problems can be caused in serious cases.

At present, with the development of industries such as digital factories and big data, more and more fields need data acquisition and control. The field bus of the traditional conductive cable is influenced by electromagnetic interference, distributed electrical parameters, more nodes and the like, and the reliable high-speed interaction of big data cannot be realized.

The transmission distance of the wireless network is limited, the real-time performance is poor due to the interference problem, the wireless network is limited within a certain range, and a base station or an access point must be set for building the wireless network, so that the system cost and the operation and maintenance cost are increased to a certain extent.

Therefore, a novel field bus communication device is needed to be designed, the field bus communication device is suitable for application environments such as industrial and mining, traffic and the like, can provide long-distance and high-speed information transmission, has very strong anti-electromagnetic interference capability, and has great significance for comprehensive popularization of future industry 4.0.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides an optical fiber adapter of a serial communication bus, which comprises an optical splitter, a photoelectric transceiver, a receiving processing unit and a sending processing unit; the optical branching device comprises an optical fiber interface A, an optical fiber interface B and an optical fiber interface C, wherein the optical fiber interfaces A and B are connected with an optical fiber bus, the optical fiber interface A is used for realizing the uplink optical signal communication between the node and the optical fiber bus, and the optical fiber interface B is used for realizing the optical signal communication between the node and the optical fiber interface A of the next node through the optical fiber bus; the optical fiber interface C is used for connecting the optical splitter and the photoelectric transceiving unit to realize uplink and downlink optical signal communication between the optical splitter and the photoelectric transceiving unit; the photoelectric transceiving unit converts the optical signal of the node into an electric signal, and the receiving and processing unit processes the obtained electric signal and sends the processed electric signal to the node equipment; the electrical signal of the node equipment is processed by the sending processing unit and sent to the photoelectric transceiving unit, the photoelectric transceiving unit converts the electrical signal into an optical signal, the optical signal is uploaded to the optical splitter through an optical fiber interface C, and then the optical signal is sent to the optical fiber bus through the optical signal interface A.

In one embodiment, the receiving processing unit has a serial communication signal receiving function pin for receiving the communication signal by the node device.

In one embodiment, the receiving processing unit has a signal sending function pin, and is used for the node device to send a communication signal.

In one embodiment, the serial communication function pins include serial communication function pins that comply with electrical requirements specified by the RXD, TXD, RS485, RS422, CAN, or USB electrical specifications.

In one embodiment, the optoelectronic transceiver unit is an optoelectronic transceiver unit of a single-fiber single-mode operation mode or a single-fiber multi-mode operation mode. The optoelectronic transceiver unit may be a single-fiber single-mode or a single-fiber multi-mode according to system requirements and cost considerations.

In one embodiment, the receiving processing unit is configured to filter and level-convert the electrical signal and send the filtered and level-converted electrical signal to the local node device.

In one embodiment, the sending processing unit is configured to send the electrical signal to the optical-electrical transceiving unit after filtering and level conversion processing.

In one embodiment, the optoelectronic transceiver unit, the receiving processing unit and the transmitting processing unit are connected with power supplies Vcc and GND.

The utility model discloses an optical fiber adapter of serial communication bus uses "photoelectricity receiving and dispatching unit" to change the signal of telecommunication into light signal or to change light signal into electricity to use "optical divider" and optical fiber bus butt joint. A receiving processing unit and a sending processing unit in an optical fiber adapter of the serial communication bus are responsible for level conversion and filtering before and after photoelectric and electro-optical conversion, so that the node equipment or the unit can use the node equipment or the unit to achieve high-speed and stable serial communication. The utility model discloses ingenious strong anti-interference, high-speed, remote etc. characteristics that utilize the optical fiber communication can constitute optic fibre serial communication bus.

Utilize the utility model discloses an optic fibre field bus communication device of serial communication bus's optic fibre adapter, but wide application is in the long-range on-line monitoring of field device under special environment such as industrial automation, mine, traffic facilities, utilizes characteristics such as strong interference killing feature, high speed, remote of optic fibre to constitute the on-the-spot serial communication bus of distributed network.

Utilize the utility model discloses a serial communication bus's optic fibre field bus communication device of optic fibre adapter realizes the serial bus communication with characteristics such as high speed, high reliability, low-cost of light communication, has effectively avoidd the unreliable communication that complicated electromagnetic environment, artificial design wiring unreasonable etc. arouse.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical fiber adapter for a serial communication bus according to the present invention.

Fig. 2 is a schematic diagram of an optical fiber communication bus device according to the present invention.

Detailed Description

In order to make the technical solutions in the present application better understood by those skilled in the art, the present invention will be further described with reference to the following embodiments, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, the optical fiber adapter 1 of the serial communication bus according to the present invention includes an optical splitter 101, a photoelectric transceiver 102, a receiving processing unit 103, and a transmitting processing unit 104.

The optical splitter 101 includes an optical fiber interface a, an optical fiber interface B, and an optical fiber interface C, where the optical fiber interfaces a and B are connected to an optical fiber bus, and the optical fiber interface C is connected to the photoelectric transceiving unit 102. The optical splitter 101 is used as a node of a bus to connect to an optical fiber bus. A plurality of optical splitters 101 are typically included on a fibre optic bus, each optical splitter 101 being in optical signal communication with the device of the node.

The transceiving channels of the optoelectronic transceiving unit 102 are connected to the receiving processing unit 103 and the transmitting processing unit 104, respectively. When the optical signal command of the downstream node is on the optical fiber bus, the optical signal command is converted into an electric signal by the unit. And sending the information to the node equipment to judge whether to execute the information. When the node equipment receives the executable instruction, the node equipment executes the instruction and uploads an execution result to the optical fiber bus through the unit.

The receiving processing unit 103 performs filtering or level conversion on the signal received by the photoelectric transceiving unit 102, and sends the signal to the node device for processing.

The sending processing unit 104 sends the execution result of the node device to the photoelectric transceiving unit 102 through filtering or level conversion, converts the execution result into an optical signal, and uploads the optical signal to the optical fiber bus through the optical splitter 101.

The photoelectric transceiver 102, the reception processor 103, and the transmission processor 104 are connected to power supplies Vcc and GND.

As shown in fig. 2, according to the present invention, the optical fiber communication bus apparatus includes a plurality of optical fiber adapters 1 of serial communication buses and a plurality of node devices 2, each node device with demand is equipped with an optical fiber adapter 1, and a node device control system 4 is connected with the optical fiber adapter 1 through RXD and TXD; the corresponding node is connected with the optical fiber bus 3 through the optical fiber interface A and the optical fiber interface B of the optical splitter 101 of the optical fiber adapter 1, the optical fiber interface A is used for realizing the optical signal communication between the node and the optical fiber bus 3, and the optical fiber interface B is used for realizing the optical signal communication between the node and the optical fiber interface A of the next node through the optical fiber bus 3.

It is to be understood that the invention disclosed is not limited to the particular methodology, protocols, and materials described, as these may vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention which will be limited only by the appended claims.

Those skilled in the art will also recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein. Such equivalents are intended to be encompassed by the following claims.

Claims

1. The optical fiber adapter of the serial communication bus is characterized by comprising an optical splitter, a photoelectric transceiving unit, a receiving processing unit and a sending processing unit in sequence;

the optical splitter comprises an optical fiber interface A, an optical fiber interface B and an optical fiber interface C, wherein the optical fiber interfaces A and B are connected with an optical fiber bus, the optical fiber interface A is used for realizing the optical signal communication between the node and the optical fiber bus, and the optical fiber interface B is used for realizing the optical signal communication between the node and the optical fiber interface A of the next node through the optical fiber bus; the optical fiber interface C is used for connecting the optical splitter and the photoelectric transceiving unit to realize uplink and downlink optical signal communication between the optical splitter and the photoelectric transceiving unit;

the photoelectric transceiving unit converts the optical signal of the node into an electric signal, and the receiving and processing unit processes the obtained electric signal and sends the processed electric signal to the node equipment; the electrical signal of the node equipment is processed by the sending processing unit and sent to the photoelectric transceiving unit, the photoelectric transceiving unit converts the electrical signal into an optical signal, the optical signal is uploaded to the optical splitter through an optical fiber interface C, and then the optical signal is sent to the optical fiber bus through the optical signal interface A.

2. The fiber optic adapter for a serial communication bus of claim 1, wherein said receiving processing unit has a serial communication signal receiving function pin for receiving a communication signal by the node device.

3. The fiber optic adapter for a serial communication bus of claim 1, wherein said receiving processing unit has a signal transmitting function pin for transmitting communication signals to the node device.

4. A fiber optic adapter for a serial communications bus according to claim 2 or 3, wherein the serial communications function pins include serial communications function pins that conform to electrical requirements specified by the RXD, TXD, RS485, RS422, CAN or USB electrical specifications.

5. The fiber optic adapter of claim 1, wherein the optoelectronic transceiver unit is a single-fiber single-mode or single-fiber multi-mode optical transceiver unit.

6. The fiber optic adapter of claim 1, wherein the receiving processing unit is configured to filter and level-convert the electrical signal and send the filtered and level-converted electrical signal to the node device.

7. The fiber adapter for serial communication bus of claim 1, wherein the sending processing unit is configured to send the electrical signal to the optoelectronic transceiver unit after filtering and level conversion.

8. The fiber adapter for serial communication bus according to claim 1, wherein the optoelectronic transceiver, the receiving processing unit, and the transmitting processing unit are connected to power supply Vcc and GND.

9. A fibre-optic communications bus device comprising a fibre-optic adapter according to any one of claims 1 to 8 for a serial communications bus.