WO2023116052A1 - 阻抗匹配的适配器、阻抗匹配系统及方法 - Google Patents

阻抗匹配的适配器、阻抗匹配系统及方法 Download PDF

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Publication number
WO2023116052A1
WO2023116052A1 PCT/CN2022/117121 CN2022117121W WO2023116052A1 WO 2023116052 A1 WO2023116052 A1 WO 2023116052A1 CN 2022117121 W CN2022117121 W CN 2022117121W WO 2023116052 A1 WO2023116052 A1 WO 2023116052A1
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WIPO (PCT)
Prior art keywords
impedance matching
adapter
interface
internal circuit
module
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PCT/CN2022/117121
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English (en)
French (fr)
Inventor
刘矗
谢乐寅
莫莽
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上海同星智能科技有限公司
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Application filed by 上海同星智能科技有限公司 filed Critical 上海同星智能科技有限公司
Priority to CA3206560A priority Critical patent/CA3206560A1/en
Priority to KR1020237011069A priority patent/KR20230098147A/ko
Priority to MX2023010686A priority patent/MX2023010686A/es
Priority to JP2023551199A priority patent/JP2024507903A/ja
Priority to EP22909375.2A priority patent/EP4339791A1/en
Publication of WO2023116052A1 publication Critical patent/WO2023116052A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • 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
    • 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
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • 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
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • 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
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4086—Bus impedance matching, e.g. termination
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0278—Arrangements for impedance matching
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN

Definitions

  • the invention belongs to the technical field of adapters, and in particular relates to an impedance matching adapter, an impedance matching system and a method.
  • the general adapter does not have any terminal resistors, but the task of impedance matching is transferred to the engineer who uses the adapter.
  • the purpose of the present invention is to provide an impedance matching adapter, impedance matching system and method.
  • an impedance matching adapter including:
  • the internal circuit, and the CAN interface module and the impedance matching module are electrically connected to the internal circuit;
  • the CAN interface module is suitable for connecting to a target network
  • the impedance matching module is connected to the CAN interface module;
  • the internal circuit is suitable for controlling the impedance matching module to adjust the resistance value between the two interfaces of the CAN interface module.
  • the CAN interface module includes: at least one CAN_L interface and CAN_H interface;
  • the CAN_L interface is connected to the internal circuit
  • the CAN_H interface is connected to the internal circuit
  • An impedance matching module is connected between the CAN_L interface and the CAN_H interface;
  • the CAN_L interface is adapted to connect to the CAN_L of the target network
  • the CAN_H interface is suitable for connecting to the CAN_H of the target network.
  • the impedance matching module includes: a relay and a terminal resistor
  • One end of the terminating resistor is connected to the relay, and the other end is connected to the CAN_H interface;
  • Described relay connects internal circuit and CAN_L interface ;
  • the internal circuit is suitable for controlling the opening and closing of the relay to adjust the resistance value between the CAN_H interface and the CAN_L interface.
  • the resistance value of the terminal resistor is suitable to be 120 ohms.
  • the adapter further includes: a USB interface module electrically connected to the internal circuit;
  • the USB interface module is connected with the host computer to receive the control instructions of the host computer;
  • the internal circuit is suitable for controlling the opening and closing of the relay according to the control instruction, and the internal circuit is suitable for feeding back the state of the relay through the USB interface module.
  • the present invention also provides an impedance matching system, including:
  • the adapter is adapted to connect to the target network
  • the adapter is suitable for receiving control instructions sent by the host computer
  • the adapter is adapted to adjust the resistance value between the two interfaces connected to the target network according to the control instruction.
  • the present invention also provides an adapter impedance matching method, including:
  • the method for adjusting the impedance between the adapter and the target network connection includes:
  • the present invention electrically connects the CAN interface module and the impedance matching module with the internal circuit through the internal circuit; the CAN interface module is suitable for connecting the target network; the impedance matching module and the CAN interface module connection; the internal circuit is suitable for controlling the impedance matching module to adjust the resistance value between the two interfaces of the CAN interface module, so that the user can automatically build a hardware circuit through software to realize a bus adapter with configurable impedance, which is suitable for general
  • the use of bus adapters brings efficiency improvements.
  • Fig. 1 is the schematic diagram of the adapter of impedance matching of the present invention
  • Fig. 2 is a functional block diagram of the impedance matching adapter of the present invention.
  • the present embodiment provides an impedance matching adapter, including: an internal circuit, and a CAN interface module and an impedance matching module electrically connected to the internal circuit; the CAN interface module is suitable for connecting the target network; the impedance matching module is connected to the CAN interface module; the internal circuit is suitable for controlling the impedance matching module to adjust the resistance resistance between the two interfaces of the CAN interface module, so that the user can automatically build a hardware circuit through software, In order to realize a bus adapter with configurable impedance, the efficiency of the general bus adapter is improved.
  • the CAN interface module includes : at least one CAN interface, that is, at least one CAN_L interface and CAN_H interface; the CAN_L interface is connected to the internal circuit; the CAN_H The interface is connected to the internal circuit; an impedance matching module is connected between the CAN_L interface and the CAN_H interface ; the CAN_L interface is suitable for connecting to the CAN_L of the target network; the CAN_H interface is suitable for CAN_H for connecting to the target network.
  • the impedance matching module includes: a relay and a terminal resistor; one end of the terminal resistor is connected to the relay, and the other end is connected to the CAN_H interface; the relay is connected to the internal circuit and the CAN_L interface, and the control of the relay
  • the terminal is connected to the internal circuit, and the opening and closing of the relay is determined by the logic of the internal circuit; the internal circuit is suitable for controlling the opening and closing of the relay to adjust the resistance resistance between the CAN_H interface and the CAN_L interface; Resistor, and through the opening and closing of the relay, the terminal resistance is connected between the two interfaces or disconnected from the two interfaces.
  • the content that the user of the adapter needs to manually operate can be completely replaced by the internal circuit or the software program set in the host computer. , improve the use efficiency of the adapter, and solve the difficulty of dynamic matching of the adapter terminal resistance.
  • the resistance value of the terminal resistor is suitable to be 120 ohms, and the 120 ohms terminal resistor can easily match the required impedance.
  • the adapter further includes: a USB interface module electrically connected to the internal circuit; the USB interface module is connected to the host computer to receive control instructions from the host computer; the internal circuit is adapted to The control command controls the opening and closing of the relay, and the internal circuit is suitable for feeding back the status of the relay through the USB interface module; the software in the host computer can issue the opening and closing command of the relay through the USB interface module, and at the same time can read the status of the relay through the USB interface module .
  • the internal circuit is composed of a microcontroller capable of processing USB signals.
  • This microcontroller can also control its IO port to realize the opening and closing of the relay, and the software program can be pre-set in the microcontroller.
  • the opening and closing of the relay is directly controlled by the internal circuit itself.
  • Embodiment 2 also provides an impedance matching system, including: a host computer and an adapter; the adapter is suitable for connecting to the target network; the adapter is suitable for receiving control instructions sent by the host computer; The command adjusts the resistance value between the two interfaces connected to the target network.
  • the adapter is suitable for adopting the impedance-matched adapter in Embodiment 1.
  • Embodiment 3 also provides an adapter impedance matching method in Embodiment 1, including: adjusting the impedance between the adapter and the target network connection.
  • the method for adjusting the impedance between the adapter and the target network includes: according to the control command sent by the host computer, connect or disconnect the terminal resistance between the two interfaces of the CAN interface module to adjust the impedance between the interfaces. resistance resistance value.
  • the present invention electrically connects the CAN interface module and the impedance matching module through the internal circuit and the internal circuit; the CAN interface module is suitable for connecting to the target network; the impedance matching module is connected to the CAN interface module; The internal circuit is suitable for controlling the impedance matching module to adjust the resistance value between the two interfaces of the CAN interface module, so that the user can automatically build a hardware circuit through software to realize a bus adapter with configurable impedance. The use of has brought about the improvement of efficiency.
  • each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions.
  • the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented by a dedicated hardware-based system that performs the specified function or action , or may be implemented by a combination of dedicated hardware and computer instructions.
  • each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.
  • the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM , Read - OnlyMemory ), random access memory (RAM , RandomAccessMemory ), magnetic disk or optical disk, and other media that can store program codes.

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  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Dc Digital Transmission (AREA)
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  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

本发明属于适配器技术领域，具体涉及一种阻抗匹配的适配器、阻抗匹配系统及方法，其中阻抗匹配的适配器包括：内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；所述 CAN接口模块适于连接目标网络；所述阻抗匹配模块与所述 CAN接口模块连接；所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值，实现了用户可通过软件自动搭建硬件电路，以实现阻抗可配置的总线适配器，这对于通用的总线适配器的使用带来了效率的提升。

Description

阻抗匹配的适配器、阻抗匹配系统及方法 技术领域
本发明属于适配器技术领域，具体涉及一种阻抗匹配的适配器、阻抗匹配系统及方法。
 背景技术
现有的总线通信，例如 CAN总线、 FlexRay总线或是汽车以太网，要求总线阻抗匹配。以 CAN总线为例，需要总线两端各接一个120欧姆的终端电阻。而通用的总线适配器，其所接入的网络上的终端电阻数量并不确定，此时需要技术人员采取阻抗匹配操作，一般来说有如下2种可能：
【1】现有总线阻抗已经匹配，接入的总线适配器不允许增加任何终端电阻。
【2】现有总线阻抗不匹配，接入的总线适配器需要增加一个终端电阻。
为了兼容未知总线的阻抗，一般的适配器不带任何终端电阻，而是把阻抗匹配的任务转交给了使用适配器的工程师。
现有的技术方案，由于将阻抗匹配的任务转交给了使用适配器的工程师，这就需要相关工程师在测量现有网络的阻抗基础上，采取线束上增加电阻、或是接口处增加带电阻的转接器、或是 PCB板上增加跳线帽等方式实现电阻的接入，这给相关的工程师带来不便。
因此，基于上述技术问题需要设计一种新的阻抗匹配的适配器、阻抗匹配系统及方法。
 技术问题
本发明的目的是提供一种阻抗匹配的适配器、阻抗匹配系统及方法。
 技术解决方案
为了解决上述技术问题，本发明提供了一种阻抗匹配的适配器，包括：
内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；
所述 CAN接口模块适于连接目标网络；
所述阻抗匹配模块与所述 CAN接口模块连接；
所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值。
进一步，所述 CAN接口模块包括：至少有一路 CAN_ L接口和 CAN_ H接口；
所述 CAN_ L接口与所述内部电路连接；
所述 CAN_ H接口与所述内部电路连接；
所述 CAN_ L接口和 CAN_ H接口之间连接有阻抗匹配模块；
所述 CAN_ L接口适于连接目标网络的 CAN_ L；
所述 CAN_ H接口适于连接目标网络的 CAN_ H。
进一步，所述阻抗匹配模块包括：继电器和终端电阻；
所述终端电阻的一端连接继电器，另一端连接 CAN_ H接口；
所述继电器连接内部电路和 CAN_ L接口；
所述内部电路适于控制继电器开合，以调节 CAN_ H接口与 CAN_ L接口之间的电阻阻值。
进一步，所述终端电阻的阻值适于采用120欧姆。
进一步，所述适配器还包括：与所述内部电路电性连接的 USB接口模块；
所述 USB接口模块与上位机连接，以接收上位机的控制指令；
所述内部电路适于根据控制指令控制继电器开合，并且所述内部电路适于通过 USB接口模块反馈继电器状态。
第二方面，本发明还提供一种阻抗匹配系统，包括：
上位机和适配器；
所述适配器适于连接目标网络；
所述适配器适于接收所述上位机发送的控制指令；
所述适配器适于根据控制指令调节与目标网络连接的两接口之间的电阻阻值。
第三方面，本发明还提供一种适配器阻抗匹配方法，包括：
调节适配器与目标网络连之间的阻抗。
进一步，所述调节适配器与目标网络连之间的阻抗的方法包括：
根据上位机发送的控制指令，在 CAN接口模块两接口之间连接或断开终端电阻，以调节接口之间的电阻阻值。
有益效果
本发明的有益效果是，本发明通过内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；所述 CAN接口模块适于连接目标网络；所述阻抗匹配模块与所述 CAN接口模块连接；所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值，实现了用户可通过软件自动搭建硬件电路，以实现阻抗可配置的总线适配器，这对于通用的总线适配器的使用带来了效率的提升。
本发明的其他特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点在说明书以及附图中所特别指出的结构来实现和获得。
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
 附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式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，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明的阻抗匹配的适配器的示意图；
图2是本发明的阻抗匹配的适配器的原理框图。
 本发明的实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通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。
如图1和图2所示，本实施例提供了一种阻抗匹配的适配器，包括：内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；所述 CAN接口模块适于连接目标网络；所述阻抗匹配模块与所述 CAN接口模块连接；所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值，实现了用户可通过软件自动搭建硬件电路，以实现阻抗可配置的总线适配器，这对于通用的总线适配器的使用带来了效率的提升。
在本实施例中，所述 CAN接口模块包括：至少一路 CAN接口，即至少有一路 CAN_ L接口和 CAN_ H接口；所述 CAN_ L接口与所述内部电路连接；所述 CAN_ H接口与所述内部电路连接；所述 CAN_ L接口和 CAN_ H接口之间连接有阻抗匹配模块；所述 CAN_ L接口适于连接目标网络的 CAN_ L；所述 CAN_ H接口适于连接目标网络的 CAN_ H。
在本实施例中，所述阻抗匹配模块包括：继电器和终端电阻；所述终端电阻的一端连接继电器，另一端连接 CAN_ H接口；所述继电器连接内部电路和 CAN_ L接口，继电器的控制端连接内部电路，由内部电路的逻辑决定继电器的开合；所述内部电路适于控制继电器开合，以调节 CAN_ H接口与 CAN_ L接口之间的电阻阻值；在适配器接入终端电阻，并且通过继电器的开闭将终端电阻接入两个接口之间或从两个接口之间断开，适配器的使用人员原本需要手工操作的内容可以完全被内部电路或上位机中设置的软件程序取代，提高了适配器的使用效率，解决了适配器终端电阻动态匹配的困难。
在本实施例中，所述终端电阻的阻值适于采用120欧姆，120欧姆的终端电阻可以便捷的匹配所需的阻抗。
在本实施例中，所述适配器还包括：与所述内部电路电性连接的 USB接口模块；所述 USB接口模块与上位机连接，以接收上位机的控制指令；所述内部电路适于根据控制指令控制继电器开合，并且所述内部电路适于通过 USB接口模块反馈继电器状态；上位机内的软件可通过 USB接口模块下发继电器的开合指令，同时可通过 USB接口模块读取继电器状态。
在本实施例中，内部电路由可处理 USB信号的微控制器组成，此微控制器还可通过控制其 IO口，实现继电器的开合，并且可以预先将软件程序设置在微控制器中，由内部电路本身直接控制继电器开合。
实施例2
本实施例2还提供一种阻抗匹配系统，包括：上位机和适配器；所述适配器适于连接目标网络；所述适配器适于接收所述上位机发送的控制指令；所述适配器适于根据控制指令调节与目标网络连接的两接口之间的电阻阻值。
在本实施例中，所述适配器适于采用实施例1中的阻抗匹配的适配器。
实施例3
本实施例3还提供一种实施例1中适配器阻抗匹配方法，包括：调节适配器与目标网络连之间的阻抗。
在本实施例中，所述调节适配器与目标网络连之间的阻抗的方法包括：根据上位机发送的控制指令，在 CAN接口模块两接口之间连接或断开终端电阻，以调节接口之间的电阻阻值。
综上所述，本发明通过内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；所述 CAN接口模块适于连接目标网络；所述阻抗匹配模块与所述 CAN接口模块连接；所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值，实现了用户可通过软件自动搭建硬件电路，以实现阻抗可配置的总线适配器，这对于通用的总线适配器的使用带来了效率的提升。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，也可以通过其它的方式实现。以上所描述的装置实施例仅仅是示意性的，例如，附图中的流程图和框图显示了根据本发明的多个实施例的装置、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在有些作为替换的实现方式中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
另外，在本发明各个实施例中的各功能模块可以集成在一起形成一个独立的部分，也可以是各个模块单独存在，也可以两个或两个以上模块集成形成一个独立的部分。
所述功能如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括： U盘、移动硬盘、只读存储器（ ROM， Read- OnlyMemory）、随机存取存储器（ RAM， RandomAccessMemory）、磁碟或者光盘等各种可以存储程序代码的介质。
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (8)

  1. 一种阻抗匹配的适配器，其特征在于，包括：
    内部电路，以及与内部电路电性连接 CAN接口模块和阻抗匹配模块；
    所述 CAN接口模块适于连接目标网络；
    所述阻抗匹配模块与所述 CAN接口模块连接；
    所述内部电路适于控制阻抗匹配模块以调节 CAN接口模块两接口之间的电阻阻值。
  2. 如权利要求1所述的阻抗匹配的适配器，其特征在于，
    所述 CAN接口模块包括：至少有一路 CAN_ L接口和 CAN_ H接口；
    所述 CAN_ L接口与所述内部电路连接；
    所述 CAN_ H接口与所述内部电路连接；
    所述 CAN_ L接口和 CAN_ H接口之间连接有阻抗匹配模块；
    所述 CAN_ L接口适于连接目标网络的 CAN_ L；
    所述 CAN_ H接口适于连接目标网络的 CAN_ H。
  3. 如权利要求2所述的阻抗匹配的适配器，其特征在于，
    所述阻抗匹配模块包括：继电器和终端电阻；
    所述终端电阻的一端连接继电器，另一端连接 CAN_ H接口；
    所述继电器连接内部电路和 CAN_ L接口；
    所述内部电路适于控制继电器开合，以调节 CAN_ H接口与 CAN_ L接口之间的电阻阻值。
  4. 如权利要求3所述的阻抗匹配的适配器，其特征在于，
    所述终端电阻的阻值适于采用120欧姆。
  5. 如权利要求3所述的阻抗匹配的适配器，其特征在于，
    所述适配器还包括：与所述内部电路电性连接的 USB接口模块；
    所述 USB接口模块与上位机连接，以接收上位机的控制指令；
    所述内部电路适于根据控制指令控制继电器开合，并且所述内部电路适于通过 USB接口模块反馈继电器状态。
  6. 一种阻抗匹配系统，其特征在于，包括：
    上位机和适配器；
    所述适配器适于连接目标网络；
    所述适配器适于接收所述上位机发送的控制指令；
    所述适配器适于根据控制指令调节与目标网络连接的两接口之间的电阻阻值。
  7. 一种适配器阻抗匹配方法，其特征在于，包括：
    调节适配器与目标网络连之间的阻抗。
  8. 如权利要求7所述的适配器阻抗匹配方法，其特征在于，
    所述调节适配器与目标网络连之间的阻抗的方法包括：
    根据上位机发送的控制指令，在 CAN接口模块两接口之间连接或断开终端电阻，以调节接口之间的电阻阻值。
PCT/CN2022/117121 2021-12-20 2022-09-05 阻抗匹配的适配器、阻抗匹配系统及方法 WO2023116052A1 (zh)

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