A short distance single bus communication adapter plate and communication system

Abstract

The application discloses a short-distance single bus communication adapter plate, which is provided with an upper interface for connecting a communication host device or a previous adapter plate, at least one lower interface for connecting a communication slave device, and at least one cascade interface for connecting a next adapter plate. The application also provides a short-distance single bus communication system, which comprises a communication host device and one or more communication slave devices, and the communication host device and the communication slave devices are electrically connected through the short-distance single bus communication adapter plate. The application can solve the problem of complicated field wiring, improve the engineering implementation efficiency and the overall reliability of the communication system.

Description

Technical Field

[0001] This invention belongs to the field of communication connection technology, and specifically relates to a short-range single-bus communication adapter board and communication system. Background Technology

[0002] In industrial, automotive, and power sectors, single-bus communication solutions (such as LIN communication) are commonly used in space-constrained, short-range communication scenarios, especially for slave devices without an MCU design. In existing solutions, the master unit typically connects multiple slave units via multiple single-bus connections. The connection between the master and slave units requires a common line (such as a power line) in addition to the communication bus. This wiring method results in dense wiring harnesses in confined spaces, easily leading to complex wiring, on-site chaos, and increased risk of incorrect connections. It severely restricts engineering implementation efficiency and reduces system reliability. Summary of the Invention

[0003] The purpose of this invention is to provide a short-range single-bus communication adapter board and communication system that can solve the problem of cumbersome on-site wiring, improve engineering implementation efficiency and the overall reliability of the communication system.

[0004] To achieve the above objectives, the solution of the present invention is:

[0005] A short-range single-bus communication adapter board, wherein the adapter board is provided with the following interfaces.

[0006] An upper interface is provided for connecting to a communication host device or an upstream adapter board;

[0007] At least one downstream interface for connecting to a communication slave device; and,

[0008] At least one cascading interface for connecting to the next adapter board.

[0009] In this configuration, the common pins of all interfaces are interconnected in the circuit; the communication pins of the upper interface and each lower interface are interconnected; and the communication pins of each level of interconnected interface are isolated from the communication pins of the upper interface and all lower interfaces.

[0010] The upper interface includes a communication port, a power line port, and a ground port; the lower interface includes a communication port, a power line port, and a ground port; and the cascaded interface includes a power line port and a ground port.

[0011] A short-range single-bus communication system, comprising,

[0012] A communication host device; and,

[0013] One or more communication slave devices;

[0014] The communication host device and each communication slave device are electrically connected through the short-range single-bus communication adapter board as described above.

[0015] The communication system includes at least one adapter board. The cascading interface of each adapter board is connected to the upper interface of its next adjacent adapter board, thus forming a series structure. The first adapter board is connected to the communication host device through its upper interface, and the lower interface of each adapter board is connected to the corresponding communication slave device.

[0016] The communication host device and the communication slave device communicate via a single bus, and the communication host device has at least one single bus access capability; the number of adapter boards is consistent with the number of communication slave devices grouped on the bus.

[0017] The communication system includes three types of wiring harnesses. The first type has a 3-pin terminal at one end, connecting to the upper interface of the first adapter board, and three open wires at the other end, which connect to the communication host device via wiring. The second type has 3-pin-3-pin terminals, connecting the communication slave device to the corresponding lower interface of the adapter board. The third type has 3-pin-3-pin terminals, with three terminals at one end of the three wires connecting to the upper interface of a non-first adapter board, and three terminals at the other end of the three wires (power line and ground line) and one open wire (communication line) connecting to the cascading interface of the previous adapter board and the communication host device. Each of the three types of wiring harnesses can be pre-fabricated with one or more length specifications depending on the application scenario.

[0018] By adopting the above solution, this invention enables rapid wiring and networking during engineering implementation through the plug-in and plug-in cooperation of the adapter board and the matching wire harness. This effectively avoids complex and messy wiring, greatly improves the efficiency of engineering implementation and the neatness of wiring, and reduces the risk of incorrect connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the adapter plate structure in this invention;

[0020] Figure 2 This is a schematic diagram of the communication system structure in this invention;

[0021] Figure 3 This is a schematic diagram of the first type of wire harness used in the communication system of this invention;

[0022] Figure 4 This is a schematic diagram of the second type of wire harness used in the communication system of this invention;

[0023] Figure 5 This is a schematic diagram of the third type of wire harness used in the communication system of this invention. Detailed Implementation

[0024] The technical solution and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] This invention provides a short-range single-bus communication adapter board, which is provided with three types of wiring terminals using the same onboard terminals, in conjunction with... Figure 1 As shown, it includes an upper interface 1, at least one lower interface 2 and at least one cascade interface 3, wherein the upper interface 1 is used to connect to the communication host device or the cascade interface 3 of the upper adapter board, each lower interface 2 is used to connect to a different communication slave device, and the cascade interface 3 is used to connect to the lower adapter board or is unused.

[0026] In a preferred embodiment of the present invention, when designing the circuit of the adapter board, the common pins of all terminals are interconnected in the circuit, and the communication pins of the upper interface and all lower interfaces on the adapter board are interconnected. However, the communication pins of the upper interface and all cascaded interfaces, and the communication pins of all lower interfaces and all cascaded interfaces, must be isolated from each other.

[0027] The present invention also provides a short-range single-bus communication system, comprising a communication host device and one or more communication slave devices; the adapter board serves as an intermediate component, enabling rapid electrical connection between the communication host device and the communication slave device through a plug-in method. Specifically, the cascading interface of each adapter board is connected to the upper interface of its next adjacent adapter board, thereby forming a series structure. The first adapter board is connected to the communication host device through its upper interface, and each adapter board is connected to the corresponding communication slave device through its lower interface.

[0028] In communication scenarios, the communication master device and the communication slave device communicate via a single bus. The connection line includes one communication line and at least one common line, such as... Figure 2 The communication line is blue, and the common line includes a red power line and a black ground line. The communication host device has at least one single-bus access capability. The number of adapter boards matches the number of communication slave devices grouped on the bus; for example, when four communication slave devices are grouped into pairs and connected to a specific bus of the communication host device, two adapter boards are required. Figure 2 As shown, communication slave device 1_1 and communication slave device 1_2 are a group, which are respectively connected to the two downstream interfaces of the first adapter board; communication slave device 2_1 and communication slave device 2_2 are a group, which are respectively connected to the two downstream interfaces of the last adapter board.

[0029] To achieve a complete quick wiring solution, the communication slave device is also equipped with the same onboard plug-in terminals as the adapter board; the communication system also includes a connecting harness that matches each plug-in terminal, with one or both ends of the harness having wire end terminals that are compatible with the onboard terminals, and the harness can be prefabricated to different length specifications according to the application scenario.

[0030] In a preferred embodiment of the present invention, three different wire harness types can be provided. The first wire harness type is used to achieve the interface connection between the communication host device and the first adapter board, in conjunction with... Figure 3 As shown, one end has a 3-pin terminal, which connects to the communication port (BUS), power port (DC+), and ground port (GND) of the first adapter board via plugging. The other end has three open wires, which connect to the power port (DC+), ground port (GND), and communication port of the communication host device via wiring. Figure 2 The first type of wiring harness is used to connect the adapter board's lower interface to the communication slave device (BUS1). Figure 4 As shown, one end of the connector has a 3-pin terminal, which is connected to the communication port (BUS), power port (DC+), and ground port (GND) of the adapter board by plugging in. The other end also has a 3-pin terminal, which is connected to the communication port (BUS), power port (DC+), and ground port (GND) of the corresponding communication slave device by plugging in. The length of the connecting cable can be set according to the distance between the adapter board and the corresponding communication slave device. Figure 5 The third type of wiring harness shown is used to connect the upper interface of a non-first adapter board to the cascade interface of the previous adapter board and the communication port of the communication host device. One end has a 3-pin terminal, which connects to the communication port (BUS), power port (DC+), and ground port (GND) of the upper interface of the non-first adapter board via plugging. The other end has only two 3-pin terminals (power line and ground line), which connect to the power port (DC+) and ground port (GND) of the cascade interface of the previous adapter board via plugging. There is also an open wiring harness (communication line) that connects to a communication port of the communication host device (e.g., Figure 2 (For the BUS2 connector), considering practical considerations, the two common lines in this type of connector are shorter, while the communication line is longer.

[0031] When using the aforementioned adapter board for field wiring, except for the connection of the communication host device to the lower terminal (including the connection to the upper interface of the first adapter board and the communication ports of the other adapter boards), the connections between other devices are completed by plugging in standardized prefabricated wire harnesses, without the need for on-site wire stripping, soldering, or checking the wire sequence one by one.

[0032] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A short-range single-bus communication adapter board, characterized in that: The adapter board is provided with the following interfaces. An upper interface is provided for connecting to a communication host device or an upstream adapter board; At least one downstream interface for connecting to a communication slave device; and, At least one cascading interface for connecting to the next adapter board.

2. The short-range single-bus communication adapter board as described in claim 1, characterized in that: All common pins of the interfaces are interconnected in the circuit; the communication pins of the upper interface and each lower interface are interconnected; the communication pins of each cascade interface are isolated from the communication pins of the upper interface and all lower interfaces.

3. The short-range single-bus communication adapter board as described in claim 1, characterized in that: The upper interface includes a communication port, a power line port, and a ground port; the lower interface includes a communication port, a power line port, and a ground port; and the cascaded interface includes a power line port and a ground port.

4. A short-range single-bus communication system, characterized in that: include, A communication host device; and, One or more communication slave devices; The communication host device and each communication slave device are electrically connected through the short-range single-bus communication adapter board as described in claim 1.

5. The short-range single-bus communication system as described in claim 4, characterized in that: The communication system is equipped with at least one adapter board. The cascading interface of each adapter board is connected to the upper interface of its next adjacent adapter board, thereby forming a series structure. The first adapter board is connected to the communication host device through the upper interface. The lower interface of each adapter board is connected to the corresponding communication slave device.

6. The short-range single-bus communication system as described in claim 4, characterized in that: The communication host device and the communication slave device communicate via a single bus, and the communication host device has at least one single bus access capability; the number of adapter boards is consistent with the number of communication slave devices grouped on the bus.

7. The short-range single-bus communication system as described in claim 4, characterized in that: The communication system includes three types of wiring harnesses. The first type of wiring harness has a 3-pin terminal on one end, which is plugged into the upper interface of the first adapter board, and the other end has three open wires, which are connected to the communication host device via wiring. The second type of wiring harness has 3-pin-3-pin terminals, which are connected to the communication slave device and the corresponding lower interface of the adapter board respectively. The third type of wiring harness has 3-pin-3-pin terminals, in which three terminals on one end of the three wires are connected to the upper interface of a non-first adapter board, and the other end has two 3-pin terminals of the wires and one open wire, which are connected to the cascade interface of the previous adapter board and the communication host device respectively.

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