Vehicle test data acquisition device based on double buses

Abstract

The utility model relates to a vehicle test data acquisition device based on double buses. The vehicle test data acquisition device comprises a communication base, a CAN (Controller Area Network)-RS422 communication protocol conversion module, a 1553B-RS422 communication protocol conversion module, a Beidou GPS (Global Positioning System) positioning module, a WiFi (Wireless Fidelity) communication module and a communication control module, the circuit board is provided with a CAN socket, a 1553B socket and a power socket, the CAN socket is connected with a CAN bus, the 1553B socket is connected with a 1553B bus, the other end of the CAN socket is connected with a CAN-RS422 communication protocol conversion module, and the 1553B socket is connected with a 1553B-RS422 communication protocol conversion module. According to the utility model, the versatility is strong, the Beidou GPS positioning module is adopted, a hardware basis is provided for vehicle test data having spatial characteristic information, and the pluggable modular design is convenient for subsequent module maintenance and data export.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile testing, and in particular relates to a vehicle testing data acquisition device based on a dual bus. Background Art

[0002] With the advancement of vehicle development technology, the amount of data transmitted between various units within a vehicle is increasing, and in-vehicle bus technology is being widely used. In addition to powertrain and chassis control, special vehicles are also equipped with subsystems such as navigation and communications. To meet the real-time and reliability requirements of data communication, in-vehicle buses such as CAN and 1553B are widely used. Due to the advanced nature and complexity of special vehicles, the various subsystems of the vehicle are developed by different units with varying development schedules and levels of technological maturity. To ensure coordination between subsystems, the design requires repeated revisions during the development and testing process, resulting in frequent changes to the in-vehicle bus communication protocol version, and incomplete vehicle data temporal and spatial information. The data recording box used to store in-vehicle communication protocols and vehicle data is difficult to frequently disassemble and modify due to its specialized integrated reinforced design and installation. This makes each communication protocol modification and data export and analysis extremely time-consuming and labor-intensive.

[0003] In order to speed up the development progress, improve the quality of vehicle development, and meet the requirements of complete recording of vehicle test data information, a test equipment is needed. During the development and testing of special vehicles, it can easily modify and replace the vehicle bus communication protocol, integrate multiple bus data of the vehicle, add time and space tags, and form structured data with time and space characteristics for storage. The data can be easily exported and analyzed after the test. Summary of the Invention

[0004] In order to solve the problem that the existing data recording box is inconvenient to use in the test link, the utility model proposes a vehicle test data acquisition device based on a dual bus, which is equipped with a CAN-RS422 communication protocol conversion module and a 1553B-RS422 communication protocol conversion module. It has strong versatility and adopts a Beidou GPS positioning module to provide a hardware foundation for the spatial feature information of vehicle test data. The pluggable modular design facilitates the maintenance of subsequent modules and data export.

[0005] In order to achieve the above object, the utility model proposes a vehicle test data acquisition device based on dual bus, including a communication base, a CAN-RS422 communication protocol conversion module, a 1553B-RS422 communication protocol conversion module, a Beidou GPS positioning module, a WiFi communication module and a communication control module;

[0006] The communication base includes a housing and a circuit board, wherein the circuit board is arranged in the housing, and the circuit board is provided with a CAN socket, a 1553B socket and a power socket, wherein the CAN socket is connected to a CAN bus, the 1553B socket is connected to a 1553B bus, and the power socket is connected to a power supply;

[0007] The other end of the CAN socket is connected to the CAN-RS422 communication protocol conversion module, and the 1553B socket is connected to the 1553B-RS422 communication protocol conversion module;

[0008] The CAN-RS422 communication protocol conversion module and the 1553B-RS422 communication protocol conversion module are communicatively connected with the communication control module;

[0009] The WiFi communication module and the Beidou GPS positioning module are communicatively connected with the communication control module.

[0010] Furthermore, the CAN-RS422 communication protocol conversion module and the 1553B-RS422 communication protocol conversion module are both provided with RS422 data lines, and the CAN-RS422 communication protocol conversion module and the 1553B-RS422 communication protocol conversion module are respectively connected to the communication control module via the RS422 data lines.

[0011] Furthermore, the WiFi communication module and the Beidou GPS positioning module are both provided with an RS422 communication module, and the WiFi communication module and the Beidou GPS positioning module are respectively connected to the communication control module through the RS422 communication module.

[0012] The CAN-RS422 communication protocol conversion module, 1553B-RS422 communication protocol conversion module, WiFi communication module, Beidou GPS positioning module, and communication control module all use the RS422 communication protocol to complete inter-module communication. They can send and receive communication data of the agreed RS422 communication protocol, hide the design technology of the vehicle bus protocol from the data export and analysis process, and improve the confidentiality of the communication protocol.

[0013] Furthermore, the communication control module includes an MCU chip and a storage module, and the MCU chip and the storage module are communicatively connected.

[0014] The communication control module adopts a modular design of communication control and storage. It can send and receive communication data of the agreed RS422 communication protocol, and can attach the module's internal clock timing information and the spatial coordinate information of the Beidou GPS positioning module, providing a hardware foundation for the formation of structured data packets for storage of time, space and vehicle data.

[0015] Furthermore, the circuit board is provided with a plurality of 96-core sockets, which are divided into five groups corresponding to the CAN-RS422 communication protocol conversion module, the 1553B-RS422 communication protocol conversion module, the Beidou GPS positioning module, the WiFi communication module and the communication control module.

[0016] And the communication pins of the CAN-RS422 communication protocol conversion module, 1553B-RS422 communication protocol conversion module, Beidou GPS positioning module, WiFi communication module and communication control module are electrically connected to the 96-core socket;

[0017] The other end of the 96-core socket is connected to the RS422 communication module and the RS422 data cable.

[0018] The pluggable modular design facilitates subsequent module replacement and data export and analysis.

[0019] Furthermore, the shell is a square structure with a hollow interior made of heat dissipation material, and the shell is provided with a CAN socket, a 1553B socket and a power socket corresponding to the CAN socket, the 1553B socket and the power socket.

[0020] Through the above technical solution, the beneficial effects of the utility model are:

[0021] The utility model adopts a universal data communication base, which includes a shell and a circuit board. The circuit board is used to integrate a CAN-RS422 communication protocol conversion module and a 1553B-RS422 communication protocol conversion module, a Beidou GPS positioning module, a WiFi communication module and a communication control module. By selecting a CAN-RS422 communication protocol conversion module or a 1553B-RS422 communication protocol conversion module, it can be applied to a variety of special vehicles using CAN and 1553B buses, thereby achieving the versatility of the test equipment. Each module can be easily plugged in and out of the communication base, making it easy to quickly replace different versions of the vehicle bus communication protocol. The vehicle bus communication protocol is converted into the agreed RS422 communication protocol for communication, and the design technology of the vehicle bus protocol is hidden from the data export and analysis process, thereby improving the confidentiality of the communication protocol. The Beidou GPS positioning module is used to obtain spatial coordinates and merge them with vehicle data, providing a hardware foundation for the stored vehicle test data to have spatial feature information. The modular design of WiFi communication is adopted to realize wireless transmission and reception of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the circuit diagrams of a dual-bus based vehicle test data acquisition device of the utility model;

[0023] Figure 2This is the second circuit diagram of a vehicle test data acquisition device based on dual bus in the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the shell structure of a vehicle test data acquisition device based on dual buses.

[0025] Figure numbers: 1 is the CAN-RS422 communication protocol conversion module, 2 is the 1553B-RS422 communication protocol conversion module, 3 is the Beidou GPS positioning module, 4 is the WiFi communication module, 5 is the communication control module, 6 is the shell, 7 is the RS422 data cable, 8 is the 96-core socket, and 9 is the RS422 communication module. DETAILED DESCRIPTION

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

[0027] Example 1

[0028] like Figures 1-3 As shown, a dual-bus based vehicle test data acquisition device includes a communication base, a CAN-RS422 communication protocol conversion module 1, a 1553B-RS422 communication protocol conversion module 2, a Beidou GPS positioning module 3, a WiFi communication module 4 and a communication control module 5;

[0029] like Figure 2 As shown, the communication base includes a housing 6 and a circuit board. The circuit board is arranged in the housing 6. The circuit board is provided with a CAN socket, a 1553B socket and a power socket. The CAN socket is connected to the CAN bus, the 1553B socket is connected to the 1553B bus, and the power socket is connected to the power supply.

[0030] The other end of the CAN socket is connected to the CAN-RS422 communication protocol conversion module 1, and the 1553B socket is connected to the 1553B-RS422 communication protocol conversion module 2;

[0031] The CAN-RS422 communication protocol conversion module 1 and the 1553B-RS422 communication protocol conversion module 2 are communicatively connected with the communication control module 5;

[0032] The WiFi communication module 4 and the Beidou GPS positioning module 3 are communicatively connected with the communication control module 5 .

[0033] The housing 6 is a square structure with a hollow interior made of heat dissipation material. The housing 6 is provided with a CAN socket, a 1553B socket and a power socket corresponding to the CAN socket, the 1553B socket and the power socket.

[0034] The CAN-RS422 communication protocol conversion module 1 and the 1553B-RS422 communication protocol conversion module 2 are both provided with RS422 data lines 7, and the CAN-RS422 communication protocol conversion module 1 and the 1553B-RS422 communication protocol conversion module 2 are connected with the communication control module 5 through the RS422 data lines 7 respectively.

[0035] The WiFi communication module 4 and the Beidou GPS positioning module 3 are both provided with RS422 communication modules 9, and the WiFi communication module 4 and the Beidou GPS positioning module 3 are connected with the communication control module 5 through the RS422 communication modules 9 respectively.

[0036] The communication control module 5 comprises an MCU chip and a storage module, and the MCU chip and the storage module are in communication connection.

[0037] A plurality of 96-core sockets are arranged on the circuit board, and the plurality of 96-core sockets are divided into five groups corresponding to the CAN-RS422 communication protocol conversion module 1, the 1553B-RS422 communication protocol conversion module 2, the Beidou GPS positioning module 3, the WiFi communication module 4 and the communication control module 5.

[0038] And the communication pins of the CAN-RS422 communication protocol conversion module 1, the 1553B-RS422 communication protocol conversion module 2, the Beidou GPS positioning module 3, the WiFi communication module 4 and the communication control module 5 are electrically connected with the 96-core sockets.

[0039] The other end of the 96-core socket is connected with the RS422 communication module 9 and the RS422 data line 7.

[0040] The five groups of 96-core socket holes are connected through RS422, so as to realize data transmission between the modules inserted in the five groups of 96-core socket holes. The five groups of 96-core socket holes are all externally connected with the output power lines of the power supply, so as to provide power supply for the modules inserted in the five groups of 96-core socket holes.

[0041] The CAN-RS422 communication protocol conversion module 1 has a communication protocol conversion function, and is inserted in the communication base through the 96-core plug arranged behind the module during operation. The CAN-RS422 communication protocol conversion module 1 is connected with the vehicle CAN bus, receives CAN bus data, converts the CAN bus communication protocol data into the agreed RS422 communication protocol data, and realizes data interaction with the communication control module 5 through the RS422 data line 7.

[0042] Similarly, the 1553B-to-RS422 communication protocol conversion module 2 has a communication protocol conversion function. During operation, the module is plugged into the communication base using the 96-pin plug on the back. The 1553B-to-RS422 communication protocol conversion module 2 connects to the 1553B bus, receives 1553B bus data, converts the 1553B bus communication protocol data into the agreed RS422 communication protocol data, and exchanges data with the communication control and storage module 5 using the RS422 data line 7.

[0043] The Beidou GPS positioning module 3 has a spatial positioning function. It is inserted into the communication base using the 96-pin plug on the back of the module and communicates with the communication control and storage module 5 through the RS422 communication module 9 according to the agreed RS422 communication protocol.

[0044] WiFi communication module 4 features wireless WiFi communication capabilities and is plugged into the communication base via a 96-pin plug on the back of the module. Under safe conditions, WiFi communication module 4 communicates with communication control and storage module 5 via RS422 communication module 9 according to the agreed RS422 communication protocol, enabling wireless data transmission and reception.

[0045] Therefore, by fusing the data from the CAN bus and the 1553B bus, adding the internal clock timing information of the communication control module and the spatial coordinate information of the Beidou GPS positioning module, a structured vehicle data packet with spatiotemporal characteristics can be formed for storage and then imported into the cloud platform for analysis.

[0046] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A vehicle test data acquisition device based on dual bus, characterized in that: It includes a communication base, a CAN-RS422 communication protocol conversion module (1), a 1553B-RS422 communication protocol conversion module (2), a Beidou GPS positioning module (3), a WiFi communication module (4) and a communication control module (5); The communication base comprises a housing (6) and a circuit board, wherein the circuit board is arranged in the housing (6), and the circuit board is provided with a CAN socket, a 1553B socket and a power socket, wherein the CAN socket is connected to a CAN bus, the 1553B socket is connected to a 1553B bus, and the power socket is connected to a power source; The other end of the CAN socket is connected to the CAN-RS422 communication protocol conversion module (1), and the 1553B socket is connected to the 1553B-RS422 communication protocol conversion module (2); The CAN-RS422 communication protocol conversion module (1) and the 1553B-RS422 communication protocol conversion module (2) are communicatively connected to the communication control module (5); The WiFi communication module (4) and the Beidou GPS positioning module (3) are communicatively connected with the communication control module (5).

2. A dual-bus based vehicle test data acquisition device according to claim 1, characterized in that: The CAN-RS422 communication protocol conversion module (1) and the 1553B-RS422 communication protocol conversion module (2) are both provided with an RS422 data line (7), and the CAN-RS422 communication protocol conversion module (1) and the 1553B-RS422 communication protocol conversion module (2) are respectively connected to the communication control module (5) via the RS422 data line (7).

3. A dual-bus based vehicle test data acquisition device according to claim 2, characterized in that: The WiFi communication module (4) and the Beidou GPS positioning module (3) are both provided with an RS422 communication module (9), and the WiFi communication module (4) and the Beidou GPS positioning module (3) are respectively connected to the communication control module (5) via the RS422 communication module (9).

4. A dual-bus based vehicle test data acquisition device according to claim 3, characterized in that: The communication control module (5) comprises an MCU chip and a storage module, and the MCU chip and the storage module are communicatively connected.

5. The dual-bus based vehicle test data acquisition device according to claim 4, characterized in that: The circuit board is provided with a plurality of 96-core sockets, and the plurality of 96-core sockets are divided into five groups corresponding to the CAN-RS422 communication protocol conversion module (1), the 1553B-RS422 communication protocol conversion module (2), the Beidou GPS positioning module (3), the WiFi communication module (4) and the communication control module (5). The communication pins of the CAN-RS422 communication protocol conversion module (1), the 1553B-RS422 communication protocol conversion module (2), the Beidou GPS positioning module (3), the WiFi communication module (4) and the communication control module (5) are electrically connected to the 96-core socket; The other end of the 96-core socket is connected to the RS422 communication module (9) and the RS422 data cable (7).

6. The dual-bus based vehicle test data acquisition device according to claim 4, characterized in that: The housing (6) is a square structure with a hollow interior made of heat dissipation material. The housing (6) is provided with a CAN socket, a 1553B socket and a power socket corresponding to the CAN socket, the 1553B socket and the power socket.

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