WO2022160093A1 - 一种usb2.0光电传输系统 - Google Patents

一种usb2.0光电传输系统 Download PDF

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Publication number
WO2022160093A1
WO2022160093A1 PCT/CN2021/073775 CN2021073775W WO2022160093A1 WO 2022160093 A1 WO2022160093 A1 WO 2022160093A1 CN 2021073775 W CN2021073775 W CN 2021073775W WO 2022160093 A1 WO2022160093 A1 WO 2022160093A1
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WIPO (PCT)
Prior art keywords
pin
connector
signal direction
circuit
photodetector
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PCT/CN2021/073775
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English (en)
French (fr)
Inventor
黄君彬
付全飞
杨勇
陈纪辉
龙玲
Original Assignee
深圳市埃尔法光电科技有限公司
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Application filed by 深圳市埃尔法光电科技有限公司 filed Critical 深圳市埃尔法光电科技有限公司
Priority to EP21820442.8A priority Critical patent/EP4287642A1/en
Priority to PCT/CN2021/073775 priority patent/WO2022160093A1/zh
Priority to JP2021574344A priority patent/JP7355859B2/ja
Priority to KR1020217042042A priority patent/KR102660250B1/ko
Priority to US17/549,841 priority patent/US11704268B2/en
Publication of WO2022160093A1 publication Critical patent/WO2022160093A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4274—Electrical aspects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]

Definitions

  • the invention belongs to the technical field of photoelectric transmission, and in particular relates to a USB2.0 photoelectric transmission system.
  • Duplex a term for communication transmission, means that the channel allows two directions of transmission in communication. Simplex means that only Party A is allowed to send information to Party B, and Party B cannot send information to Party A. If it is allowed to transmit in two directions at the same time, it is called full-duplex; the so-called half-duplex means that only one action occurs in a period of time. For a simple example, on a narrow road, only one vehicle can pass at the same time. When there are two cars facing each other, in this case, only one car can pass first, and then the other car can drive after the end. This example vividly illustrates the principle of half-duplex. USB2.0 is a kind of half-duplex. Duplex protocol.
  • USB2.0 electrical signal is packaged and uploaded into the USB3.0 signal with a chip, and because in the USB protocol, the USB3.0 is connected to the laser and the photodetector in a simplex circuit, so the USB3.0 Photoelectric transmission can be used to indirectly realize the photoelectric transmission of USB2.0.
  • USB3.0 Photoelectric transmission can be used to indirectly realize the photoelectric transmission of USB2.0.
  • USB2.0 devices For example, if the two devices are only USB2.0 devices, then because the devices do not have a USB3.0 PIN at all , so it cannot be used at all; second, this method must also be divided into directions at the module end (the HOST and Device ends), not the USB2.0 signal transmission that is interchangeable and plugged in a real sense.
  • the invention provides a USB2.0 optoelectronic transmission system, which can realize the USB2.0 optoelectronic transmission in a true sense, which can be interchanged and inserted at will and regardless of direction.
  • the present invention provides a USB2.0 photoelectric transmission system, comprising a first USB2.0 connector, a second USB2.0 connector, a first signal direction judging circuit, a second signal direction judging circuit, a first laser, and a second laser , a first photodetector and a second photodetector, the first end and the second end of the first signal direction discrimination circuit are respectively connected to the D+ pin and the D- pin of the first USB2.0 connector, The third end and the fourth end of the first signal direction discriminating circuit are respectively connected to the first laser and the second photodetector, and the first end and the second end of the second signal direction discriminating circuit are respectively connected The D+ pin and D- pin of the second USB2.0 connector, the third end and the fourth end of the second signal direction discrimination circuit are respectively connected to the second laser and the first photodetector , the first laser and the first photodetector and the second laser and the second photodetector are connected by optical fibers, the first signal direction discriminating circuit and the second signal direction discriminating circuit
  • the second laser is connected to the D+ pin or D- pin of the second USB2.0 connector, and when it is recognized that an electrical signal flows into the first photodetector or the second photodetector
  • the first photodetector is connected to the D+ pin or D- pin of the second USB2.0 connector, or the second photodetector is connected to the D+ pin or the D+ pin of the first USB2.0 connector. D-pin is connected.
  • both the first signal direction judging circuit and the second signal direction judging circuit are electrically connected to the power terminals of the first USB2.0 connector and the second USB2.0 connector, and the first USB2.
  • a signal direction judging circuit and the second signal direction judging circuit are both electrically connected to the ground terminals of the first USB2.0 connector and the second USB2.0 connector.
  • the first signal direction judging circuit is also used to connect the second photodetector and all the electrical signals when it is recognized that the D+ pin or D- pin of the first USB2.0 connector has an electrical signal flowing in.
  • the circuit channel between the D+ pin or D- pin of the first USB2.0 connector is closed, and the second signal direction discrimination circuit is also used to identify the D+ pin of the second USB2.0 connector.
  • the circuit channel between the first photodetector and the D+ pin or D- pin of the second USB2.0 connector is closed, and the first signal
  • the direction discriminating circuit is also used to connect the connection between the first laser and the D+ pin or D- pin of the first USB2.
  • the circuit channel is closed, and the second signal direction judging circuit is also used to lead the second laser and the DD+ of the second USB2.
  • the circuit path between pin or D-pin is closed.
  • first signal direction judging circuit and the second signal direction judging circuit include FPGA chips.
  • first signal direction judging circuit and the second signal direction judging circuit include an MCU microcontroller.
  • first signal direction judging circuit and the second signal direction judging circuit are integrated chips.
  • the embodiment of the present invention has the beneficial effect that the first signal direction judging circuit and the second signal direction judging circuit of the present invention detect that the D+ pin or the D- pin has an electrical signal flowing into the first signal direction
  • the laser is connected to the D+ pin or D- pin of the first USB2.0 connector, or the second laser is connected to the D+ pin or D- pin of the second USB2.0 connector, so that the electrical signal is transmitted to the first USB2.0 connector.
  • the first signal direction discrimination circuit and the second signal direction discrimination circuit can also identify the first photodetector or the second photodetector When there is an electrical signal flowing into the device, connect the first photodetector to the D+ pin or D- pin of the second USB2.0 connector or connect the second photodetector to the D+ pin of the first USB2.0 connector or The D- pin is connected, so that the electrical signal is transmitted from the first photodetector or the second photodetector to the D+/D- terminal, so as to complete the conversion of light to electricity, thus realizing the real meaning of free interchange and mutual insertion, no USB2.0 photoelectric transmission in different directions.
  • FIG. 1 is a schematic circuit diagram of a USB2.0 photoelectric transmission system provided by an embodiment of the present invention.
  • a USB2.0 photoelectric transmission system of the present invention includes a first USB2.0 connector 11 , a second USB2.0 connector 12 , a first signal direction discrimination circuit 41 , and a second signal direction discrimination circuit 42 , the first laser 21, the second laser 22, the first photodetector 31 and the second photodetector 32, the first end and the second end of the first signal direction discrimination circuit 41 are respectively connected to the first USB2.0 connector 11
  • the D+ pin and D- pin, the third end and the fourth end of the first signal direction discriminating circuit 41 are respectively connected to the first laser 21 and the second photodetector 32, and the first end of the second signal direction discriminating circuit 42 and the second end are respectively connected to the D+ pin and D- pin of the second USB2.0 connector 12, the third end and the fourth end of the second signal direction discrimination circuit 42 are respectively connected to the second laser 22 and the first photodetector 31, the first laser 21 and the first photodetector 31 and the second laser 22 and the second photodetector 32 are connected
  • the first signal direction discriminating circuit 41 and the second signal direction discriminating circuit 42 of the present invention connect the first laser 21 and the first USB2. 0
  • the D+ pin or D- pin of the connector 11 is connected or the second laser 22 and the D+ pin or D- pin of the second USB2.0 connector 12 are connected, so that the electrical signal is transmitted to the first laser 21 or The second laser 22, thereby exciting the first laser 21 or the second laser 22 to convert electricity to light;
  • the first signal direction discrimination circuit 41 and the second signal direction discrimination circuit 42 can also identify the first photodetector 31 or When the second photodetector 32 has an electrical signal flowing in, the first photodetector 31 is connected to the D+ pin or D- pin of the second USB2.0 connector 12 or the second photodetector 32 is connected to the first USB2.0.
  • the D+ pin or D- pin of the connector 11 is connected, so that the electrical signal is transmitted from the first photodetector 31 or the second photodetector 32 to the D+/D- terminal, thereby completing the conversion of light to electricity, thereby realizing In the true sense, the USB2.0 photoelectric transmission can be freely interchanged and inserted, regardless of the direction.
  • the first signal direction identification circuit 41 and the second signal direction identification circuit 42 are both electrically connected to the power terminals of the first USB2.0 connector 11 and the second USB2.0 connector 12, and the first signal direction identification Both the circuit 41 and the second signal direction determination circuit 42 are electrically connected to the ground terminals of the first USB2.0 connector 11 and the second USB2.0 connector 12 .
  • the first signal direction discriminating circuit 41 is further configured to connect the second photodetector to the second photodetector when it is recognized that there is an electrical signal flowing into the D+ pin or D- pin of the first USB2.0 connector 11
  • the circuit channel between 32 and the D+ pin or D- pin of the first USB2.0 connector 11 is closed, and the second signal direction discrimination circuit 42 is also used to identify the D+ pin of the second USB2.0 connector 12.
  • the circuit channel between the first photodetector 31 and the D+ pin or D- pin of the second USB2.0 connector 12 is closed, and the first signal direction discrimination circuit 41 It is also used to close the circuit channel between the first laser 21 and the D+ pin or D- pin of the first USB2.
  • the signal direction discrimination circuit 42 is also used to connect the circuit between the second laser 22 and the DD+ pin or D- pin of the second USB2. Channel closed.
  • the first signal direction identification circuit 41 and the second signal direction identification circuit 42 in this embodiment include FPGA chips.
  • the first signal direction identification circuit 41 and the second signal direction identification circuit 42 Including an MCU microcontroller, the first signal direction judging circuit 41 and the second signal direction judging circuit 42 may also be integrated chips, which are not limited in this embodiment.
  • the first signal direction discriminating circuit 41 and the second signal direction discriminating circuit 42 of the present invention connect the first laser 21 and the first USB2.0
  • the D+ pin or D- pin of the connector 11 is connected or the second laser 22 and the D+ pin or D- pin of the second USB2.0 connector 12 are connected, so that the electrical signal is transmitted to the first laser 21 or the first Two lasers 22, thereby exciting the first laser 21 or the second laser 22 to perform electrical-to-optical conversion;
  • the first signal direction discriminating circuit 41 and the second signal direction discriminating circuit 42 can also identify the first photodetector 31 or the second When the two photodetectors 32 have electrical signals flowing in, the first photodetector 31 is connected to the D+ pin or D- pin of the second USB2.0 connector 12 or the second photodetector 32 is connected to the first USB2.0
  • the D+ pin or D- pin of the connector 11 is connected, so that the electrical signal is transmitted from the first photodetector 31 or the second photodetector 32 to the D+/D- terminal, thereby

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

本发明涉及一种USB2.0光电传输系统，包括第一USB2.0连接器、第二USB2.0连接器、第一信号方向判别电路、第二信号方向判别电路、第一激光器、第二激光器、第一光电探测器以及第二光电探测器，第一信号方向判别电路的第一端和第二端分别连接第一USB2.0连接器的D+引脚和D-引脚，第一信号方向判别电路的第三端和第四端分别连接第一激光器和第二光电探测器，第二信号方向判别电路的第一端和第二端分别连接第二USB2.0连接器的D+引脚和D-引脚，第二信号方向判别电路的第三端和第四端分别连接第二激光器和第一光电探测器，第一激光器和第一光电探测器以及第二激光器和第二光电探测器之间通过光纤连接。本发明可实现真正意义上的USB2.0光电传输。

Description

一种USB2.0光电传输系统 技术领域
本发明属于光电传输技术领域，尤其涉及一种USB2.0光电传输系统。
 背景技术
双工，是通讯传输的一个术语，指在通信上此通道允许两个方向传输。而单工就是只允许甲方向乙方传送信息，而乙方不能向甲方传送信息。如果是允许同时两个方向传输，称为全双工；所谓半双工则是指一个时间段内只有一个动作发生，举个简单例子，一条窄窄的马路，同时只能有一辆车通过，当目前有两辆车对开，这种情况下就只能一辆先过，等到头后另一辆再开，这个例子就形象的说明了半双工的原理，USB2.0就是一种半双工协议。
由于光电转换发射元器件与接收元器件的构造不同，一个是激光，一个光电探测器，导致了对于连接激光，或者连接光电探测器的电路电通道，必须定义清楚进来的是发射端，还是接受端，因此无法实现真正的USB2.0光电传输。相关技术中，用芯片将USB2.0电信号打包上载到USB3.0的信号里面，而因为在USB协议中，USB3.0在电路上是单工连接到激光和光电探测器，因此USB3.0可以用光电传输，间接实现了USB2.0的光电传输。然而上述方案也有很多：第一，由于不是真正意义上单纯的USB2.0传输，因此在很多应用上无法使用，比如如果两个设备只是USB2.0设备，那么因为设备根本没有USB3.0的PIN，因此根本无法使用；第二，这种方式还必须在模组端分方向（分HOST和Device端），不是真正意义上随意互换互插的USB2.0信号传输。
 技术问题
本发明提供一种USB2.0光电传输系统，可实现真正意义上随意互换互插、不分方向的USB2.0光电传输。
 技术解决方案
本发明提供一种USB2.0光电传输系统，包括第一USB2.0连接器、第二USB2.0连接器、第一信号方向判别电路、第二信号方向判别电路、第一激光器、第二激光器、第一光电探测器以及第二光电探测器，所述第一信号方向判别电路的第一端和第二端分别连接所述第一USB2.0连接器的D+引脚和D-引脚，所述第一信号方向判别电路的第三端和第四端分别连接所述第一激光器和所述第二光电探测器，所述第二信号方向判别电路的第一端和第二端分别连接所述第二USB2.0连接器的D+引脚和D-引脚，所述第二信号方向判别电路的第三端和第四端分别连接所述第二激光器和所述第一光电探测器，所述第一激光器和所述第一光电探测器以及所述第二激光器和所述第二光电探测器之间通过光纤连接，所述第一信号方向判别电路和所述第二信号方向判别电路用于在识别到D+引脚或D-引脚有电信号流入时将所述第一激光器和所述第一USB2.0连接器的D+引脚或D-引脚连通或将所述第二激光器和所述第二USB2.0连接器的D+引脚或D-引脚连通，以及在识别到所述第一光电探测器或所述第二光电探测器端有电信号流入时将所述第一光电探测器和所述第二USB2.0连接器的D+引脚或D-引脚连通或将所述第二光电探测器和所述第一USB2.0连接器的D+引脚或D-引脚连通。
进一步地，所述第一信号方向判别电路和所述第二信号方向判别电路均与所述第一USB2.0连接器和所述第二USB2.0连接器的电源端子电连接，所述第一信号方向判别电路和所述第二信号方向判别电路均与所述第一USB2.0连接器和所述第二USB2.0连接器的接地端子电连接。
进一步地，所述第一信号方向判别电路还用于在识别到所述第一USB2.0连接器的D+引脚或D-引脚有电信号流入时将所述第二光电探测器和所述第一USB2.0连接器的D+引脚或D-引脚之间的电路通道关闭，所述第二信号方向判别电路还用于在识别到所述第二USB2.0连接器的D+引脚或D-引脚有电信号流入时将所述第一光电探测器和所述第二USB2.0连接器的D+引脚或D-引脚之间的电路通道关闭，所述第一信号方向判别电路还用于在识别到所述第二光电探测器端有电信号流入时将所述第一激光器和所述第一USB2.0连接器的D+引脚或D-引脚之间的电路通道关闭，所述第二信号方向判别电路还用于在识别到所述第一光电探测器端有电信号流入时将所述第二激光器和所述第二USB2.0连接器的DD+引脚或D-引脚之间的电路通道关闭。
进一步地，所述第一信号方向判别电路和所述第二信号方向判别电路包括FPGA芯片。
进一步地，所述第一信号方向判别电路和所述第二信号方向判别电路包括MCU微控制器。
进一步地，所述第一信号方向判别电路和所述第二信号方向判别电路为集成芯片。
 有益效果
本发明实施例与现有技术相比，有益效果在于，本发明的第一信号方向判别电路和第二信号方向判别电路在识别到D+引脚或D-引脚有电信号流入时将第一激光器和第一USB2.0连接器的D+引脚或D-引脚连通或将第二激光器和第二USB2.0连接器的D+引脚或D-引脚连通，让电信号传输到第一激光器或第二激光器，从而激发第一激光器或第二激光器进行电到光的转换；第一信号方向判别电路和第二信号方向判别电路还可以在识别到第一光电探测器或第二光电探测器有电信号流入时将第一光电探测器和第二USB2.0连接器的D+引脚或D-引脚连通或将第二光电探测器和第一USB2.0连接器的D+引脚或D-引脚连通，让电信号从第一光电探测器或第二光电探测器传输到D+/D-端，从而完成光到电的转换，从而实现了真正意义上随意互换互插、不分方向的USB2.0光电传输。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的USB2.0光电传输系统的电路示意图。
主要元件说明：
11、第一USB2.0连接器；12、第二USB2.0连接器；21、第一激光器；22、第二激光器；31、第一光电探测器；32、第二光电探测器；41、第一信号方向判别电路；42、第二信号方向判别电路；50、光纤。
 本发明的实施方式
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，本发明一种USB2.0光电传输系统，包括第一USB2.0连接器11、第二USB2.0连接器12、第一信号方向判别电路41、第二信号方向判别电路42、第一激光器21、第二激光器22、第一光电探测器31以及第二光电探测器32，第一信号方向判别电路41的第一端和第二端分别连接第一USB2.0连接器11的D+引脚和D-引脚，第一信号方向判别电路41的第三端和第四端分别连接第一激光器21和第二光电探测器32，第二信号方向判别电路42的第一端和第二端分别连接第二USB2.0连接器12的D+引脚和D-引脚，第二信号方向判别电路42的第三端和第四端分别连接第二激光器22和第一光电探测器31，第一激光器21和第一光电探测器31以及第二激光器22和第二光电探测器32之间通过光纤50连接，第一信号方向判别电路41和第二信号方向判别电路42用于在识别到D+引脚或D-引脚有电信号流入时将第一激光器21和第一USB2.0连接器11的D+引脚或D-引脚连通或将第二激光器22和第二USB2.0连接器12的D+引脚或D-引脚连通，以及在识别到第一光电探测器31或第二光电探测器32端有电信号流入时将第一光电探测器31和第二USB2.0连接器12的D+引脚或D-引脚连通或将第二光电探测器32和第一USB2.0连接器11的D+引脚或D-引脚连通。
相较于相关技术，本发明的第一信号方向判别电路41和第二信号方向判别电路42在识别到D+引脚或D-引脚有电信号流入时将第一激光器21和第一USB2.0连接器11的D+引脚或D-引脚连通或将第二激光器22和第二USB2.0连接器12的D+引脚或D-引脚连通，让电信号传输到第一激光器21或第二激光器22，从而激发第一激光器21或第二激光器22进行电到光的转换；第一信号方向判别电路41和第二信号方向判别电路42还可以在识别到第一光电探测器31或第二光电探测器32有电信号流入时将第一光电探测器31和第二USB2.0连接器12的D+引脚或D-引脚连通或将第二光电探测器32和第一USB2.0连接器11的D+引脚或D-引脚连通，让电信号从第一光电探测器31或第二光电探测器32传输到D+/D-端，从而完成光到电的转换，从而实现了真正意义上随意互换互插、不分方向的USB2.0光电传输。
上述实施例中，第一信号方向判别电路41和第二信号方向判别电路42均与第一USB2.0连接器11和第二USB2.0连接器12的电源端子电连接，第一信号方向判别电路41和第二信号方向判别电路42均与第一USB2.0连接器11和第二USB2.0连接器12的接地端子电连接。
优选地，为了防止信号叠加串扰，第一信号方向判别电路41还用于在识别到第一USB2.0连接器11的D+引脚或D-引脚有电信号流入时将第二光电探测器32和第一USB2.0连接器11的D+引脚或D-引脚之间的电路通道关闭，第二信号方向判别电路42还用于在识别到第二USB2.0连接器12的D+引脚或D-引脚有电信号流入时将第一光电探测器31和第二USB2.0连接器12的D+引脚或D-引脚之间的电路通道关闭，第一信号方向判别电路41还用于在识别到第二光电探测器32端有电信号流入时将第一激光器21和第一USB2.0连接器11的D+引脚或D-引脚之间的电路通道关闭，第二信号方向判别电路42还用于在识别到第一光电探测器31端有电信号流入时将第二激光器22和第二USB2.0连接器12的DD+引脚或D-引脚之间的电路通道关闭。
可选的，本实施例的第一信号方向判别电路41和第二信号方向判别电路42包括FPGA芯片，在其他可能的实施方式中，第一信号方向判别电路41和第二信号方向判别电路42包括MCU微控制器，第一信号方向判别电路41和第二信号方向判别电路42也可以为集成芯片，本实施例对此不做限制。
综上所述，本发明的第一信号方向判别电路41和第二信号方向判别电路42在识别到D+引脚或D-引脚有电信号流入时将第一激光器21和第一USB2.0连接器11的D+引脚或D-引脚连通或将第二激光器22和第二USB2.0连接器12的D+引脚或D-引脚连通，让电信号传输到第一激光器21或第二激光器22，从而激发第一激光器21或第二激光器22进行电到光的转换；第一信号方向判别电路41和第二信号方向判别电路42还可以在识别到第一光电探测器31或第二光电探测器32有电信号流入时将第一光电探测器31和第二USB2.0连接器12的D+引脚或D-引脚连通或将第二光电探测器32和第一USB2.0连接器11的D+引脚或D-引脚连通，让电信号从第一光电探测器31或第二光电探测器32传输到D+/D-端，从而完成光到电的转换，从而实现了真正意义上随意互换互插、不分方向的USB2.0光电传输。
以上为对本发明所提供的技术方案的描述，对于本领域的技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本发明的限制。

Claims (6)

  1. 一种USB2.0光电传输系统，其特征在于，包括第一USB2.0连接器(11)、第二USB2.0连接器(12)、第一信号方向判别电路(41)、第二信号方向判别电路(42)、第一激光器(21)、第二激光器(22)、第一光电探测器(31)以及第二光电探测器(32)，所述第一信号方向判别电路(41)的第一端和第二端分别连接所述第一USB2.0连接器(11)的D+引脚和D-引脚，所述第一信号方向判别电路(41)的第三端和第四端分别连接所述第一激光器(21)和所述第二光电探测器(32)，所述第二信号方向判别电路(42)的第一端和第二端分别连接所述第二USB2.0连接器(12)的D+引脚和D-引脚，所述第二信号方向判别电路(42)的第三端和第四端分别连接所述第二激光器(22)和所述第一光电探测器(31)，所述第一激光器(21)和所述第一光电探测器(31)以及所述第二激光器(22)和所述第二光电探测器(32)之间通过光纤(50)连接，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)用于在识别到D+引脚或D-引脚有电信号流入时将所述第一激光器(21)和所述第一USB2.0连接器(11)的D+引脚或D-引脚连通或将所述第二激光器(22)和所述第二USB2.0连接器(12)的D+引脚或D-引脚连通，以及在识别到所述第一光电探测器(31)或所述第二光电探测器(32)端有电信号流入时将所述第一光电探测器(31)和所述第二USB2.0连接器(12)的D+引脚或D-引脚连通或将所述第二光电探测器(32)和所述第一USB2.0连接器(11)的D+引脚或D-引脚连通。
  2. 根据权利要求1所述的USB2.0光电传输系统，其特征在于，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)均与所述第一USB2.0连接器(11)和所述第二USB2.0连接器(12)的电源端子电连接，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)均与所述第一USB2.0连接器(11)和所述第二USB2.0连接器(12)的接地端子电连接。
  3. 根据权利要求1所述的USB2.0光电传输系统，其特征在于，所述第一信号方向判别电路(41)还用于在识别到所述第一USB2.0连接器(11)的D+引脚或D-引脚有电信号流入时将所述第二光电探测器(32)和所述第一USB2.0连接器(11)的D+引脚或D-引脚之间的电路通道关闭，所述第二信号方向判别电路(42)还用于在识别到所述第二USB2.0连接器(12)的D+引脚或D-引脚有电信号流入时将所述第一光电探测器(31)和所述第二USB2.0连接器(12)的D+引脚或D-引脚之间的电路通道关闭，所述第一信号方向判别电路(41)还用于在识别到所述第二光电探测器(32)端有电信号流入时将所述第一激光器(21)和所述第一USB2.0连接器(11)的D+引脚或D-引脚之间的电路通道关闭，所述第二信号方向判别电路(42)还用于在识别到所述第一光电探测器(31)端有电信号流入时将所述第二激光器(22)和所述第二USB2.0连接器(12)的DD+引脚或D-引脚之间的电路通道关闭。
  4. 根据权利要求1至3所述的USB2.0光电传输系统，其特征在于，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)包括FPGA芯片。
  5. 根据权利要求1至3所述的USB2.0光电传输系统，其特征在于，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)包括MCU微控制器。
  6. 根据权利要求1至3所述的USB2.0光电传输系统，其特征在于，所述第一信号方向判别电路(41)和所述第二信号方向判别电路(42)为集成芯片。
PCT/CN2021/073775 2021-01-26 2021-01-26 一种usb2.0光电传输系统 WO2022160093A1 (zh)

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