Multi-channel CAN vehicle information acquisition system based on 4G communication mode
阅读说明：本技术 基于4g通信方式的多路can车辆信息采集系统 (Multi-channel CAN vehicle information acquisition system based on 4G communication mode ) 是由 李岩 于 2019-10-12 设计创作，主要内容包括：一种基于4G通信方式的多路CAN车辆信息采集系统,包括若干路CAN总线模块,与车辆总线系统连接,用于采集获取整车状态的信息数据；微处理器模块,与若干路CAN总线模块连接,用于接收CAN总线模块获取的整车状态的信息参数；信号发送模块,与微处理器模块连接,用于将微处理器模块接收的整车状态的信息参数传输出去；数据存储服务器,与信号发送模块连接,用于接收信号发送模块发出的信号发送模块。本发明具备与车辆通讯的基本功能,能完成对整车CAN总线数据的完整采集,并将采集的数据通过4G网络上传至数据存储服务器,具有数据同步性、处理能力强的优势。(A multi-path CAN vehicle information acquisition system based on a 4G communication mode comprises a plurality of paths of CAN bus modules, a plurality of CAN bus modules and a controller, wherein the plurality of paths of CAN bus modules are connected with a vehicle bus system and used for acquiring information data of the state of a whole vehicle; the microprocessor module is connected with the plurality of CAN bus modules and is used for receiving the information parameters of the state of the whole vehicle, which are acquired by the CAN bus modules; the signal sending module is connected with the microprocessor module and is used for transmitting the information parameters of the vehicle state received by the microprocessor module; and the data storage server is connected with the signal sending module and is used for receiving the signal sending module sent by the signal sending module. The CAN bus data acquisition system has the basic function of communicating with vehicles, CAN complete the complete acquisition of the CAN bus data of the whole vehicle, uploads the acquired data to the data storage server through the 4G network, and has the advantages of high data synchronism and high processing capacity.)
1. The utility model provides a multichannel CAN vehicle information acquisition system based on 4G communication mode which characterized in that: the method comprises the following steps:
the eight-path CAN bus module (1) is connected with a vehicle bus system and is used for acquiring information data of the state of the whole vehicle;
the microprocessor module (2) is connected with the eight-path CAN bus module (1) and is used for receiving information parameters of the state of the whole vehicle, which are acquired by the eight-path CAN bus module (1);
the signal sending module (3) is connected with the microprocessor module (2) and is used for transmitting the information parameters of the whole vehicle state received by the microprocessor module (2);
the data storage server (4) is connected with the signal sending module (3) and is used for receiving the signal sent by the signal sending module (3);
the eight-path CAN bus module (1) is connected with a vehicle bus system through the connector module (5);
one end of the LIN bus module (6) is connected with the connector module (5), and the other end of the LIN bus module (6) is connected with the microprocessor module (2);
the CAN-FD bus module (7), one end of the CAN-FD bus module (7) is connected with the connector module (5), and the other end is connected with the microprocessor module (2);
the MCU module (8), the MCU module (8) is connected with the microprocessor module (2), used for controlling the dormancy and awakening of the microprocessor module (2);
the key input module (9) and the indicator light module (10), wherein the key input module (9) and the indicator light module (10) are connected with the microprocessor module (2) through the MCU module (8);
the power supply module (11), power supply module (11) are connected with eight ways CAN bus module (1), microprocessor module (2), signal transmission module (3), connector module (5), LIN bus module (6), CAN-FD bus module (7), MCU module (8), key input module (9) and pilot lamp module (10), and supply power to it.
2. The multi-channel CAN vehicle information acquisition system based on the 4G communication mode according to claim 1, characterized in that: the signal transmission module (3) comprises a 4G communication chip or a WIFI communication chip, and the signal transmission module (3) comprises a cloud server.
Technical Field
The invention relates to the technical field of information acquisition systems, in particular to a multi-channel CAN vehicle information acquisition system based on a 4G communication mode.
Background
The unmanned automobile is an intelligent automobile which senses road environment through a vehicle-mounted sensing system, automatically plans a driving route and controls the automobile to reach a preset target. The vehicle-mounted sensor is used for sensing the surrounding environment of the vehicle, and controlling the steering and the speed of the vehicle according to the road, the vehicle position and the obstacle information obtained by sensing, so that the vehicle can safely and reliably run on the road. The system integrates a plurality of technologies such as automatic control, a system structure, artificial intelligence, visual calculation and the like, is a product of high development of computer science, mode recognition and intelligent control technology, is an important mark for measuring national scientific research strength and industrial level, and has wide application prospect in the fields of national defense and national economy.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a multi-path CAN vehicle information acquisition system based on a 4G communication mode, aiming at improving the synchronism and the transmission rate of vehicle information transmission.
A multi-channel CAN vehicle information acquisition system based on a 4G communication mode comprises:
the eight-path CAN bus module is connected with the vehicle bus system and used for acquiring information data of the state of the whole vehicle;
the microprocessor module is connected with the eight-path CAN bus module and is used for receiving the information parameters of the state of the whole vehicle, which are acquired by the eight-path CAN bus module;
the signal sending module is connected with the microprocessor module and is used for transmitting the information parameters of the vehicle state received by the microprocessor module; the signal transmission module comprises a 4G communication chip or a WIFI communication chip and comprises a cloud server.
And the data storage server is connected with the signal sending module and is used for receiving the signal sent by the signal sending module.
And the eight-path CAN bus module is connected with a vehicle bus system through the connector module.
And one end of the LIN bus module is connected with the connector module, and the other end of the LIN bus module is connected with the microprocessor module.
And one end of the CAN-FD bus module is connected with the connector module, and the other end of the CAN-FD bus module is connected with the microprocessor module.
And the MCU module is connected with the microprocessor module and is used for controlling the dormancy and awakening of the microprocessor module.
The key input module and the indicating lamp module are connected with the microprocessor module through the MCU module.
And the power supply module is connected with the eight-path CAN bus module, the microprocessor module, the signal transmitting module, the connector module, the LIN bus module, the CAN-FD bus module, the MCU module, the key input module and the indicator light module and supplies power to the eight-path CAN bus module, the microprocessor module, the signal transmitting module, the connector module, the LIN bus module, the CAN-FD bus module, the MCU module, the key input.
The invention has the beneficial effects that:
1. the vehicle information acquisition system of the system expands data transmission channels by parallel transmission of a plurality of paths of CAN buses, CAN-FD buses and LIN buses; meanwhile, the synchronism of data transmission is greatly improved by utilizing the low time delay of CAN bus transmission.
2. Compared with other communication technologies, the 4G technology has better transmission synchronism and transmission rate performance, and can greatly improve the performance of the whole system.
3. The vehicle information acquisition system of the system disclosed by the invention has a basic function of communicating with a vehicle, CAN complete the complete acquisition of the CAN bus data of the whole vehicle, and uploads the acquired data to the data storage server through the 4G network, and has the advantages of high data synchronism and high processing capability.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a circuit diagram of a CAN bus module of the present invention.
FIG. 3 is a circuit diagram of a microprocessor module according to the present invention.
Fig. 4 is a circuit diagram of a LIN bus module of the present invention.
Fig. 5 is a circuit diagram of a CAN-FD bus module of the present invention.
Fig. 6 is a circuit diagram of the MCU module of the present invention.
Fig. 7 is a circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, a multi-channel CAN vehicle information collection system based on 4G communication mode includes:
the eight-path CAN bus module 1 is connected with a vehicle bus system and used for acquiring information data of the state of the whole vehicle;
the microprocessor module 2 is connected with the eight-path CAN bus module 1 and is used for receiving the information parameters of the state of the whole vehicle, which are acquired by the eight-path CAN bus module 1;
the signal sending module 3 is connected with the microprocessor module 2 and is used for transmitting the information parameters of the state of the whole vehicle received by the microprocessor module 2; the signal sending module 3 comprises a 4G communication chip or a WIFI communication chip, and the signal sending module 3 comprises a cloud server.
And the data storage server 4 is connected with the signal sending module 3 and is used for receiving the signal sent by the signal sending module 3.
The
And one end of the LIN bus module 6 is connected with the
And the CAN-FD bus module 7, one end of the CAN-FD bus module 7 is connected with the
And the
The key input module 9 and the
And the power module 11 is connected with the eight-path CAN bus module 1, the microprocessor module 2, the signal transmitting module 3, the
Referring to fig. 2, in the embodiment of the present invention, the eight-way CAN bus module 1 includes a SJA1000 chip which is connected to the SPI interface in the microprocessor module 2, wherein the SJA1000 chip is a stand-alone controller for mobile objects and regional network control in general industrial environment, which is a substitute for the CAN controller basican of the PHILIPS semiconductor PCA82C200 and which is added with a new operating mode PeliCAN supporting CAN2.0b protocol having many new characteristics. In the embodiment of the invention, the CAN bus module is butted with the vehicle CAN bus through the connector module to acquire vehicle bus data.
Referring to fig. 3, after the vehicle information data collected by the eight-way CAN bus module 1 is transmitted to the microprocessor module 2, in the embodiment of the present invention, the microprocessor module 2 includes an i.mx6d chip of a ciscarl, and an application processor of the i.mx6 chip combines an extensible platform with a wide integration and a high energy efficiency processing function. The i.MX6D core processor is constructed by ARMCortex-A9, with a main frequency of 1GHz and a dual-core 32-bit bus width. The working temperature range of the automobile grade chip is-40C- +125 ℃. The external resources such as the internal bus plug-in 1GBDDR3 internal memory, the 32GBEMMC storage space, the 32GB TF card interface, the plug-in RTC real-time clock and the like are used for data acquisition and processing of the eight paths of CAN bus modules, and the synchronism and the transmission rate of data acquisition CAN be greatly improved.
In order to improve the synchronism and the transmission rate of data, the invention is further provided with an LIN bus module 6 and a CAN-FD bus module 7, specifically as shown in figures 4 and 5, the LIN bus module 6 uses serial port resources inside an i.MX6D chip of the microprocessor module 2, an external LIN bus driver is externally hung, and the UART transmission mode of an LIN bus and the eight-path CAN bus module 1 are used for parallel transmission, so that the synchronism and the transmission rate of data acquisition are greatly improved; further, the CAN-FD bus module 7 in the embodiment of the present invention has many advantages over the conventional CAN2.0, including faster data rate and data byte message expansion.
In addition, referring to fig. 6, in the embodiment of the present invention, the
Referring to fig. 7, in the embodiment of the present invention, the signal sending module 3 adopts a 4G communication mode, the 4G communication mode adopts an integrated 4G module, and the wireless WIFI internet function is realized through an external expansion network card, supporting LTE-TDD/FDD, WCDMA, TD-SCDMA, GSM/GPRS/EDGE, and GNSS transmission protocols.