In-vehicle network simulation test device and simulation test system

Abstract

The utility model belongs to bus communication technology, concretely relates to a kind of vehicle-mounted network simulation test equipment and simulation test system, vehicle-mounted network simulation test equipment includes: bus interface unit, including CAN / CAN FD interface module, LIN interface module and Ethernet interface module;Gigabit Ethernet SFP+ interface module;Microcontroller module is connected with vehicle-mounted equipment by bus interface unit, and still be connected with a host computer by Gigabit Ethernet SFP+ interface module;The vehicle-mounted network simulation test equipment of the utility model is integrated by including the bus interface unit of multiple interface modules and Gigabit Ethernet SFP+ interface module, single equipment can be communicated with the vehicle-mounted equipment using different communication protocols, solve the technical problem that the equipment cost is high, the space occupied is big, PC connection cable is numerous in prior art because using multiple independent single bus test equipment.

Description

Technical Field

[0001] This utility model belongs to bus communication technology, specifically relating to an in-vehicle network simulation test device and simulation test system. Background Technology

[0002] With the development of automotive electronics technology, in-vehicle network structures are becoming increasingly complex, typically including multiple bus protocols such as CAN, CANFD, LIN, and automotive Ethernet. During research, development, testing, and production, engineers need to communicate simultaneously with ECUs on these different buses.

[0003] However, most current testing equipment is single-bus testing equipment. Multiple different types of single-bus testing equipment are needed to meet the communication requirements of automotive ECUs with different communication protocols, resulting in high testing costs and numerous connection cables.

[0004] Therefore, existing technologies have the technical problem that single-bus testing equipment cannot meet the communication requirements of automotive ECUs with different communication protocols. Utility Model Content

[0005] In order to solve the technical problems mentioned in the background art, this utility model provides an in-vehicle network simulation test device and a simulation test system.

[0006] This utility model provides an in-vehicle network simulation testing device, including:

[0007] The bus interface unit includes a CAN / CAN FD interface module, a LIN interface module, and an Ethernet interface module;

[0008] 10 Gigabit Ethernet SFP+ interface module;

[0009] The microcontroller module connects to the vehicle-mounted equipment via a bus interface unit and also connects to a host computer via a 10 Gigabit Ethernet SFP+ interface module.

[0010] Furthermore, it also includes: a Type-C interface module;

[0011] The microcontroller module is connected to the host computer via a Type-C interface module.

[0012] Furthermore, it also includes: a signal input / output interface module;

[0013] The microcontroller module is connected to the vehicle-mounted equipment via a signal input / output interface module.

[0014] Furthermore, it also includes: a gigabit Ethernet interface module;

[0015] The microcontroller module is connected to the host computer via a gigabit Ethernet interface module.

[0016] Furthermore, it also includes: a time synchronization interface module;

[0017] The microcontroller module is connected to the time synchronization device through the time synchronization interface module.

[0018] Furthermore, the Ethernet interface module includes: an in-vehicle Ethernet interface and a standard Ethernet interface.

[0019] Furthermore, this utility model also provides a simulation testing system, comprising:

[0020] Host computer, vehicle-mounted equipment, and vehicle network simulation testing equipment as described above;

[0021] The host computer is connected to the vehicle-mounted device through the vehicle network simulation test equipment to realize data transmission between the host computer and the vehicle-mounted device.

[0022] The beneficial effect of this utility model is that the vehicle network simulation test equipment of this utility model integrates a bus interface unit including multiple interface modules and a 10 Gigabit Ethernet SFP+ interface module, so that a single device can communicate with automotive ECUs using different communication protocols, thus solving the problems existing in the prior art. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 These are design block diagrams of in-vehicle network simulation test equipment involved in some embodiments;

[0025] Figure 2 This is a partial circuit diagram of the microcontroller module of the vehicle network simulation test equipment involved in some embodiments;

[0026] Figure 3 This is another part of the circuit diagram of the microcontroller module of the vehicle network simulation test equipment involved in some embodiments;

[0027] Figure 4 This is a third part of the circuit diagram of the microcontroller module of the vehicle network simulation test equipment involved in some embodiments;

[0028] Figure 5 These are schematic diagrams of the simulation test equipment system involved in some embodiments. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] Explanation of terms or English names:

[0031] SFP+ (Enhanced Small Form-factor Pluggable): Enhanced small form-factor pluggable module.

[0032] SMA (SubMiniature version A): A threaded coaxial connector.

[0033] With the development of automotive electronics technology, in-vehicle network structures are becoming increasingly complex, typically including multiple bus protocols such as CAN, CANFD, LIN, and automotive Ethernet. During R&D, testing, and production, engineers need to communicate simultaneously with ECUs on these different buses. The current approach uses multiple independent single-bus test devices, but this solution has several drawbacks: high equipment cost, large footprint, and numerous PC connection cables.

[0034] Therefore, existing technologies suffer from high equipment costs, large space requirements, and numerous PC connection cables due to the use of multiple independent single-bus test devices.

[0035] like Figure 1 As shown, at least one embodiment provides an in-vehicle network simulation test device, including: a bus interface unit, including a CAN / CAN FD interface module, a LIN interface module and an Ethernet interface module; a 10 Gigabit Ethernet SFP+ interface module; a microcontroller module, which is connected to the in-vehicle device through the bus interface unit, and is also connected to a host computer through the 10 Gigabit Ethernet SFP+ interface module.

[0036] Specifically, in this example, the vehicle-mounted equipment can refer to the vehicle's ECU.

[0037] Specifically, this vehicle network simulation test equipment integrates a bus interface unit with multiple interface modules and a 10 Gigabit Ethernet SFP+ interface module. A single device can communicate with automotive ECUs using different communication protocols. This solves the technical problems of high equipment cost, large space occupation, and numerous PC connection cables caused by the use of multiple independent single-bus test devices in the existing technology. In addition, the 10 Gigabit Ethernet SFP+ interface module provides extremely high uplink bandwidth, ensuring that there are no bottlenecks in data transmission between the device and the host computer when massive amounts of data are generated during simulation and testing, avoiding data frame loss and ensuring real-time performance.

[0038] Specifically, such as Figures 2 to 4The microcontroller module U1, for example but not limited to, uses an XCZU4EV-SFVC784-2 microcontroller. As the core scheduling unit, it coordinates the acquisition, simulation, and forwarding of data from various buses, ensuring the efficiency and stability of data processing in complex network environments. This integrated design significantly simplifies the test system setup process and improves the efficiency of research and development and testing.

[0039] Specifically, such as Figure 2 As shown, the microcontroller module pins IO_L7P_HDGC_AD5P_43, IO_L7N_HDGC_AD5N_43, IO_L8P_HDGC_AD4P_43, IO_L8N_HDGC_AD4N_43, IO_L9P_AD3P_43, IO_L9N_AD3N_43, IO_L10P_AD2P_43, and IO_L10N_AD2N_43 are connected to the CAN / CAN FD interface module for transmitting CAN1_TXD_3V3, CAN1_RXD_3V3, CAN2_TXD_3V3, CAN3_RXD_3V3, CAN3_TXD_3V3, CAN2_RXD_3V3, CAN4_TXD_3V3, and CAN4_RXD_3V3 signals.

[0040] Specifically, such as Figure 3 As shown, the microcontroller module's IO_L7P_HDGC_44 pin, IO_L7N_HDGC_44 pin, IO_L8P_HDGC_44 pin, and IO_L8N_HDGC_44 pin are connected to the LIN interface module for the transmission of LIN1_RXD_3V3, LIN1_TXD_3V3, LIN2_RXD_3V3, and LIN2_TXD_3V3 signals.

[0041] Specifically, such as Figure 4 As shown, the microcontroller module's PS_MIO64_502 pin to PS_MIO77_502 pin are connected to the Ethernet interface module for the transmission of Ethernet-related signals.

[0042] In some embodiments, the vehicle network simulation test equipment further includes: a Type-C interface module supporting the USB 3.0 protocol; the microcontroller module is connected to the host computer through the Type-C interface module.

[0043] Specifically, the Type-C interface module supports the USB 3.0 protocol, providing a high-speed data channel and power supply. In complex or constrained Ethernet environments, the Type-C interface module offers significant connectivity convenience and flexibility, allowing engineers to quickly connect devices and perform debugging.

[0044] Specifically, this embodiment features a redundant design with multiple connection methods (10 Gigabit Ethernet + USB) to the host computer. When one connection method fails or its performance is limited, it can be quickly switched to another, ensuring the continuity of simulation testing and the high availability of this vehicle-mounted network simulation testing equipment.

[0045] In some embodiments, the vehicle network simulation test equipment further includes: a signal input / output interface module; the microcontroller module is connected to the vehicle equipment through the signal input / output interface module.

[0046] Specifically, the signal input / output interface module allows this in-vehicle network simulation test equipment to directly interact with the physical pins of the vehicle ECU, for simulating sensor signals (such as analog inputs), reading switch states (digital inputs), or driving actuators (digital / analog outputs). This enables the in-vehicle network simulation test equipment to not only perform bus communication tests, but also to perform deeper functional verification of the vehicle ECU and hardware-in-the-loop simulation, greatly expanding its application scenarios.

[0047] In addition, by simultaneously capturing bus data and physical signals, they can be analyzed synchronously in the simulation test software on the host computer, helping engineers quickly locate whether the problem lies at the communication level or the electrical level, thereby achieving system integration testing at the vehicle level.

[0048] In some embodiments, the vehicle network simulation test equipment further includes: a gigabit Ethernet interface module; the microcontroller module is connected to the host computer through the gigabit Ethernet interface module.

[0049] Specifically, the Gigabit Ethernet interface module includes one RJ45 network cable interface; Gigabit Ethernet is a very mature and widely used standard in the industry, and its cost is lower than that of 10 Gigabit solutions. For routine testing scenarios that do not require extreme bandwidth (such as CAN / LIN bus monitoring and UDS diagnostics), the Gigabit Ethernet interface module provides an excellent balance between performance and cost, lowering the barrier to entry for users.

[0050] In some embodiments, the vehicle network simulation test equipment further includes: a time synchronization interface module; the microcontroller module is connected to the time synchronization device through the time synchronization interface module.

[0051] Specifically, the time synchronization device refers to a device that provides a synchronization signal; in this embodiment, it can refer to a host computer. The time synchronization interface module may, for example, but is not limited to, using an SMA interface.

[0052] In some embodiments, the Ethernet interface module includes: an in-vehicle Ethernet interface and a standard Ethernet interface.

[0053] Specifically, through the vehicle-mounted Ethernet interface and the standard Ethernet interface, this vehicle-mounted network simulation test equipment not only supports the special physical layer standards of the automotive field, but also ensures universality for interconnection with conventional IT equipment. Users can directly connect to the T1 interface of the vehicle ECU, or connect to standard network devices such as switches and routers via RJ45, achieving seamless integration of the test environment.

[0054] Specifically, the CAN / CAN FD interface module uses two DB9Male interfaces to provide four CAN (supporting CAN / CANFD) channels; the LIN interface module uses one DB9Male interface to provide two LIN channels; the Ethernet interface module includes two TE MATEnet automotive Ethernet interfaces and two RJ45 standard Ethernet interfaces; each TE MATEnet automotive Ethernet interface provides two automotive Ethernet channels supporting hardware BYPASS, and the two RJ45 standard Ethernet interfaces provide two 100Base-Tx / 1000Base-T channels; the signal input / output interface module uses a DB9Female interface to provide four digital signal input / output (DIDO) channels and three analog signal input / output (AIAO) channels.

[0055] like Figure 5 As shown, some embodiments also provide a simulation testing system, including: a host computer, an in-vehicle device, and an in-vehicle network simulation testing device as described above; the host computer is connected to the in-vehicle device through the in-vehicle network simulation testing device to realize data transmission between the host computer and the in-vehicle device.

[0056] Specifically, there can be multiple vehicle-mounted devices. The host computer is connected to each of the vehicle-mounted devices through the vehicle network simulation test equipment to realize data transmission between the host computer and each vehicle-mounted device.

[0057] Specifically, the structure and working principle of the vehicle network simulation test equipment are detailed in the previously described content, and will not be repeated here.

[0058] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A vehicle-mounted network simulation testing device, characterized in that, include: The bus interface unit includes a CAN / CAN FD interface module, a LIN interface module, and an Ethernet interface module; 10 Gigabit Ethernet SFP+ interface module; The microcontroller module connects to the vehicle-mounted equipment via a bus interface unit and also connects to a host computer via a 10 Gigabit Ethernet SFP+ interface module.

2. The vehicle-mounted network simulation testing equipment according to claim 1, characterized in that, Also includes: A Type-C interface module that supports the USB 3.0 protocol; The microcontroller module is connected to the host computer via a Type-C interface module.

3. The vehicle-mounted network simulation test equipment according to claim 1 or 2, characterized in that, Also includes: Signal input / output interface module; The microcontroller module is connected to the vehicle-mounted equipment via a signal input / output interface module.

4. The vehicle-mounted network simulation testing equipment according to claim 3, characterized in that, Also includes: Gigabit Ethernet interface module; The microcontroller module is connected to the host computer via a gigabit Ethernet interface module.

5. The vehicle-mounted network simulation test equipment according to claim 4, characterized in that, Also includes: Time synchronization interface module; The microcontroller module is connected to the time synchronization device through the time synchronization interface module.

6. The vehicle-mounted network simulation testing equipment according to claim 1, characterized in that, The Ethernet interface module includes: an in-vehicle Ethernet interface and a standard Ethernet interface.

7. A simulation testing system, characterized in that, include: upper computer, vehicle-mounted equipment and vehicle network simulation testing equipment; The host computer is connected to the vehicle-mounted device through the vehicle network simulation test equipment to realize data transmission between the host computer and the vehicle-mounted device.

8. The simulation testing system according to claim 7, characterized in that, The vehicle network simulation testing equipment includes: The bus interface unit includes a CAN / CAN FD interface module, a LIN interface module, and an Ethernet interface module; 10 Gigabit Ethernet SFP+ interface module; The microcontroller module connects to the vehicle-mounted equipment via a bus interface unit and also connects to a host computer via a 10 Gigabit Ethernet SFP+ interface module.

9. The simulation testing system according to claim 8, characterized in that, The vehicle network simulation testing equipment also includes: Type-C interface module; The microcontroller module is connected to the host computer via a Type-C interface module.

10. The simulation testing system according to claim 8 or 9, characterized in that, The vehicle network simulation testing equipment also includes: Signal input / output interface module; The microcontroller module is connected to the vehicle-mounted equipment via a signal input / output interface module.

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