Automobile ECU simulation test equipment and simulation test system

Abstract

The utility model belongs to bus communication technology, specifically relates to a kind of automobile ECU simulation test equipment and simulation test system, automobile ECU simulation test equipment includes: SENT protocol interface module;PSI5 protocol interface module;Bus interface module;Microcontroller module is connected with automobile ECU respectively by SENT protocol interface module, PSI5 protocol interface module and bus interface module, to realize the transmission of multi-protocol sensor data and bus data;The automobile ECU simulation test equipment of the utility model is integrated by SENT protocol interface module, PSI5 protocol interface module and bus interface module, can simultaneously support two kinds of high-precision and strong anti-interference ability automobile sensor mainstream interface protocol, realizes the transmission, simulation and monitoring of multi-protocol sensor data and bus data, solves the problems existing in prior art.

Description

Technical Field

[0001] This utility model belongs to bus communication technology, specifically relating to an automotive ECU simulation test device and simulation test system. Background Technology

[0002] In the field of automotive electronic control system research and testing, the reliability of communication between the ECU (Electronic Control Unit) and sensors is crucial. Currently, SENT (Single Edge Nibble Transmission) and PSI5 (Peripheral Sensor Interface 5) have become mainstream sensor interface protocols due to their high precision and strong anti-interference capabilities.

[0003] However, existing testing equipment has limited functionality. In scenarios where it is necessary to simultaneously simulate SENT and PSI5 sensors and connect to a CAN / CAN FD bus network, multiple testing devices need to be configured, which is not only costly but also inefficient.

[0004] Therefore, existing testing equipment has a technical problem of not being able to support multiple sensor interface protocols. Utility Model Content

[0005] In order to solve the technical problems mentioned in the background art, this utility model provides an automotive ECU simulation test equipment and simulation test system.

[0006] This utility model provides an automotive ECU simulation testing device, including: a SENT protocol interface module; a PSI5 protocol interface module; and a bus interface module;

[0007] The microcontroller module connects to the vehicle ECU via the SENT protocol interface module, the PSI5 protocol interface module, and the bus interface module to enable the transmission of multi-protocol sensor data and bus data.

[0008] Furthermore, the SENT protocol interface module includes: two SENT protocol interfaces; wherein

[0009] Each SENT protocol interface supports 10 SENT channels; and

[0010] Sensor data based on the SENT protocol is transmitted to the microcontroller module via the corresponding SENT channel in the corresponding SENT protocol interface.

[0011] Furthermore, the PSI5 protocol interface module includes: two PSI5 protocol interfaces; wherein

[0012] Each PSI5 protocol interface supports 8 PSI5 channels;

[0013] Sensor data based on the PSI5 protocol is transmitted to the microcontroller module via the corresponding PSI5 channel in the corresponding PSI5 protocol interface.

[0014] Furthermore, the bus interface module includes: a CAN / CAN FD interface;

[0015] The CAN / CAN FD interface supports two CAN / CAN FD channels.

[0016] Furthermore, it also includes: a signal input / output interface module;

[0017] The microcontroller module is connected to the vehicle ECU through the signal input / output interface module.

[0018] Furthermore, it also includes: an Ethernet interface module;

[0019] The microcontroller module is connected to a host computer via an Ethernet interface module.

[0020] Furthermore, it also includes: a time synchronization interface module;

[0021] The microcontroller module is connected to the time synchronization device through the time synchronization interface module.

[0022] Furthermore, this utility model also provides a simulation testing system, comprising:

[0023] Host computer, automotive ECU, and automotive ECU simulation testing equipment as described above;

[0024] The host computer is connected to the vehicle ECU through the vehicle ECU simulation test equipment to realize data transmission between the host computer and the vehicle ECU.

[0025] The beneficial effects of this invention are that the automotive ECU simulation test equipment of this invention, by integrating the SENT protocol interface module, the PSI5 protocol interface module and the bus interface module, can simultaneously support two mainstream automotive sensor interface protocols with high precision and strong anti-interference capabilities, realizing the transmission, simulation and monitoring of multi-protocol sensor data and bus data, and solving the problems existing in the prior art. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 These are design block diagrams of automotive ECU simulation testing equipment involved in some embodiments;

[0028] Figure 2 This is a partial circuit diagram of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0029] Figure 3 This is another part of the circuit diagram of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0030] Figure 4 This is a circuit diagram of the third part of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0031] Figure 5 This is a circuit diagram of the fourth part of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0032] Figure 6 This is the fifth part of the circuit diagram of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0033] Figure 7 This is the sixth part of the circuit diagram of the microcontroller module of the automotive ECU simulation test equipment involved in some embodiments;

[0034] Figure 8 This is a circuit diagram of the SENT interface for one of the SENT signals in the automotive ECU simulation test equipment involved in some embodiments;

[0035] Figure 9 This is a PSI5 interface circuit diagram of four PSI5 signals in an automotive ECU simulation test device involved in some embodiments;

[0036] Figure 10 This is a second design block diagram of the automotive ECU simulation test equipment involved in some embodiments;

[0037] Figure 11 These are schematic diagrams of the simulation test equipment system involved in some embodiments. Detailed Implementation

[0038] 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.

[0039] Explanation of terms or English names:

[0040] SENT (Single Edge Nibble Transmission): A protocol for transmitting single-edge nibble data.

[0041] PSI5 (Peripheral Sensor Interface 5): A serial interface protocol used for sensor data transmission in automotive electronics.

[0042] In the field of automotive electronic control system research and testing, the reliability of communication between the ECU (Electronic Control Unit) and sensors is crucial. Currently, SENT (Single Edge Nibble Transmission) and PSI5 (Peripheral Sensor Interface 5) have become mainstream sensor interface protocols due to their high precision and strong anti-interference capabilities.

[0043] However, existing testing equipment has limited functionality. In scenarios where it is necessary to simultaneously simulate SENT and PSI5 sensors and connect to a CAN / CAN FD bus network, multiple testing devices need to be configured, which is not only costly but also inefficient.

[0044] Therefore, existing testing equipment has a technical problem of not being able to support multiple sensor interface protocols.

[0045] like Figure 1 As shown, at least one embodiment provides an automotive ECU simulation test device, including: a SENT protocol interface module; a PSI5 protocol interface module; a bus interface module; and a microcontroller module, which are connected to the automotive ECU through the SENT protocol interface module, the PSI5 protocol interface module, and the bus interface module, respectively, to realize the transmission of multi-protocol sensor data and bus data.

[0046] Specifically, this automotive ECU simulation test equipment integrates the SENT protocol interface module, PSI5 protocol interface module, and bus interface module, enabling it to simultaneously support two mainstream automotive sensor interface protocols with high precision and strong anti-interference capabilities. This achieves the transmission, simulation, and monitoring of multi-protocol sensor data and bus data, solving the problems existing in the prior art. Furthermore, using this automotive ECU simulation test equipment for automotive ECU simulation testing not only reduces testing costs but also improves testing efficiency.

[0047] Specifically, such as Figures 2 to 7 The microcontroller module U1, for example but not limited to, uses a TC397XP-256F300S microcontroller, which serves as the core scheduling unit to coordinate the acquisition, simulation, and forwarding of data from various sensors and CAN / CAN FD bus data.

[0048] In some embodiments, the SENT protocol interface module includes: two SENT protocol interfaces; each SENT protocol interface supports 10 SENT channels; and sensor data based on the SENT protocol is transmitted to the microcontroller module via the corresponding SENT channel in the corresponding SENT protocol interface.

[0049] Specifically, the SENT protocol interface uses the DB37 interface.

[0050] Specifically, the SENT protocol interface module also includes a SENT interface circuit, such as... Figure 8 As shown, taking one SENT signal as an example, the SENT1 signal output by the sensor is processed by a protection circuit and a filtering circuit before being output as the SENT_NODE_1 signal to the microcontroller module. The protection circuit includes a TISP4240M3BJR surge protector and a TISP4240M3BJR overcurrent protector; the filtering circuit includes a first RC filter circuit composed of resistor R137 and capacitor C95 and a second RC filter circuit composed of resistor R138 and capacitor C97. The SENT interface circuits for the remaining SENT signals are similar to... Figure 8 Similar examples are shown below, and will not be elaborated upon here.

[0051] Specifically, such as Figures 3 to 6 The microcontroller module's P14_0, P14_1, P00_0, P00_3, P00_4, P00_5, P00_6, P00_7, P00_8, P00_9, P00_10, P02_2, P02_3, P02_9, P02_10, P02_11, P32_5, P32_6, and P32_7 pins are connected to the SENT protocol interface module for the transmission of 20 SENT signals.

[0052] In some embodiments, the PSI5 protocol interface module includes: two PSI5 protocol interfaces; wherein each PSI5 protocol interface supports eight PSI5 channels; sensor data based on the PSI5 protocol is transmitted to the microcontroller module via the corresponding PSI5 channel in the corresponding PSI5 protocol interface.

[0053] Specifically, the PSI5 protocol interface uses the DB15 interface.

[0054] Specifically, the PSI5 protocol interface module also includes a PSI5 interface circuit, such as... Figure 9 As shown, the PSI5 interface circuit includes an E52141A62CXX2 type PSI5 protocol transceiver U21, which enables the transmission of four PSI5 signals. This embodiment uses... Figure 9 Taking PSI5_SIF_1, PSI5_SIF_2, PSI5_SIF_3, and PSI5_SIF_4 as examples, the PSI5 interface circuits for the remaining PSI5 signals are... Figure 9 Similar examples are shown below, and will not be elaborated upon here.

[0055] In some embodiments, the bus interface module includes a CAN / CAN FD interface; the CAN / CAN FD interface supports two CAN / CAN FD channels.

[0056] Specifically, the CAN / CAN FD interface module includes one DB9 Male interface to provide two CAN (supporting CAN / CAN FD) channels.

[0057] Specifically, such as Figure 4 , Figure 6 As shown, the microcontroller module's P01_3 pin, P01_4 pin, P33_7 pin, and P33_8 pin are connected to the bus interface module for the transmission of two CAN / CAN FD signals.

[0058] In some embodiments, such as Figure 10 As shown, the automotive ECU simulation test equipment also includes: a signal input / output interface module; the microcontroller module is connected to the automotive ECU through the signal input / output interface module.

[0059] Specifically, the signal input / output interface module includes one DB9 Female interface to provide four digital signal input / output (DIDO) channels and three analog signal input / output (AIAO) channels.

[0060] Specifically, the signal input / output interface module allows this automotive ECU simulation test equipment to directly interact with the physical pins of the automotive ECU for simulating sensor signals (such as analog inputs), reading switch states (digital inputs), or driving actuators (digital / analog outputs). This enables the automotive ECU simulation test equipment to not only perform bus communication tests but also conduct deeper functional verification and hardware-in-the-loop simulation of automotive ECUs, greatly expanding its application scenarios.

[0061] Specifically, such as Figure 7 The microcontroller module's AN18 / P40_11 pin, AN19 / P40_12 pin, and AN28 / P40_113 pin are connected to the signal input / output module for the transmission of three analog signals.

[0062] Specifically, such as Figure 2 , Figure 3 , Figure 5 As shown, the microcontroller module's P15_4, P12_0, P12_1, and P10_0 pins are connected to the signal input / output module for the transmission of four digital signals.

[0063] In some embodiments, such as Figure 10As shown, the automotive ECU simulation test equipment also includes an Ethernet interface module; the microcontroller module is connected to a host computer via the Ethernet interface module.

[0064] Specifically, the Ethernet interface module includes one RJ45 network cable interface to provide one 1000Base-T channel.

[0065] In some embodiments, such as Figure 10 As shown, the automotive ECU simulation test equipment also includes a time synchronization interface module; the microcontroller module is connected to the time synchronization device through the time synchronization interface module.

[0066] 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.

[0067] like Figure 11 As shown, some embodiments also provide a simulation testing system, including: a host computer, an automotive ECU, and an automotive ECU simulation testing device as described above; the host computer is connected to the vehicle-mounted device through the automotive ECU simulation testing device to realize data transmission between the host computer and the vehicle-mounted device.

[0068] Specifically, there can be multiple vehicle ECUs. The host computer is connected to each of the vehicle ECUs through the vehicle ECU simulation and testing equipment to realize data transmission between the host computer and each vehicle ECU.

[0069] Specifically, the structure and working principle of the automotive ECU simulation test equipment are detailed in the previously described content and will not be repeated here.

[0070] 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 ECU simulation testing device, characterized in that, include: SENT protocol interface module; PSI5 protocol interface module; Bus interface module; The microcontroller module connects to the vehicle ECU via the SENT protocol interface module, the PSI5 protocol interface module, and the bus interface module to enable the transmission of multi-protocol sensor data and bus data.

2. The automotive ECU simulation testing equipment according to claim 1, characterized in that, The SENT protocol interface module includes: two SENT protocol interfaces; wherein Each SENT protocol interface supports 10 SENT channels; and Sensor data based on the SENT protocol is transmitted to the microcontroller module via the corresponding SENT channel in the corresponding SENT protocol interface.

3. The automotive ECU simulation testing equipment according to claim 1, characterized in that, The PSI5 protocol interface module includes: two PSI5 protocol interfaces; wherein Each PSI5 protocol interface supports 8 PSI5 channels; Sensor data based on the PSI5 protocol is transmitted to the microcontroller module via the corresponding PSI5 channel in the corresponding PSI5 protocol interface.

4. The automotive ECU simulation testing equipment according to claim 1, characterized in that, Also includes: The bus interface module includes: a CAN / CAN FD interface; The CAN / CAN FD interface supports two CAN / CAN FD channels.

5. The automotive ECU simulation testing equipment according to claim 1, characterized in that, Also includes: Signal input / output interface module; The microcontroller module is connected to the vehicle ECU through the signal input / output interface module.

6. The automotive ECU simulation testing equipment according to claim 1, characterized in that, Also includes: Ethernet interface module; The microcontroller module is connected to a host computer via an Ethernet interface module.

7. The automotive ECU simulation testing equipment according to claim 1, 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.

8. A simulation testing system, characterized in that, include: Host computer, automotive ECU and automotive ECU simulation testing equipment; The host computer is connected to the vehicle ECU through the vehicle ECU simulation test equipment to realize data transmission between the host computer and the vehicle ECU.

9. The simulation testing system according to claim 8, characterized in that, The automotive ECU simulation testing equipment includes: SENT protocol interface module; PSI5 protocol interface module; Bus interface module; The microcontroller module connects to the vehicle ECU via the SENT protocol interface module, the PSI5 protocol interface module, and the bus interface module to enable the transmission of multi-protocol sensor data and bus data.

10. The simulation testing system according to claim 9, characterized in that, The SENT protocol interface module includes: two SENT protocol interfaces; wherein Each SENT protocol interface supports 10 SENT channels; and Sensor data based on the SENT protocol is transmitted to the microcontroller module via the corresponding SENT channel in the corresponding SENT protocol interface; The PSI5 protocol interface module includes: two PSI5 protocol interfaces; wherein Each PSI5 protocol interface supports 8 PSI5 channels; Sensor data based on the PSI5 protocol is transmitted to the microcontroller module via the corresponding PSI5 channel in the corresponding PSI5 protocol interface.

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