CAN data logger

Abstract

The invention discloses a controller area network (CAN) data logger, which comprises a microprocessor control unit (MCU) module, a CAN data communication module, a real-time clock logging module and a universal serial bus (USB) interface module, wherein the CAN data communication module is in charge of receiving differential signal data on a CAN network, converting the signal data into common serial data, and sending the common serial data to the MCU module; after receiving the common serial data, the MCU module stores the common serial data in a buffer area, and once the buffer area stores set bytes, the buffer area performs a write operation to an external storage device through the USB interface module; the real-time clock logging module is in charge of logging the current clock; and all the modules are connected together through an inboard high-speed data bus, an interface adapter circuit and a special interface on a processor, and are integrated in one circuit board. The CAN data logger reasonably integrates all functions to reduce the redundancy of a system, improve the integration level and achieve an optimal system platform.

Description

technical field [0001] The invention belongs to the field of automobiles, and particularly describes a recording device for CAN bus data. Background technique [0002] It is the development trend of automobile electronic technology to control the automobile through the automobile bus. The vehicle general network is applied to the control system, information system, driving system and sensor execution system of the vehicle to complete the communication and action of various sensors, controllers and actuators of the vehicle, and realize the distributed control of the vehicle electronic control system . At present, the automotive CAN bus application layer specification and effective testing methods and test instruments for the automotive CAN bus network are still lacking. The domestic disclosure of the automotive bus CAN technology is very low. Currently, the CAN network analysis instruments on the market are all foreign products. , such as the CANoe tool of German Vector com...

AI Technical Summary

Problems solved by technology

At present, the automotive CAN bus application layer specification and effective testing methods and test instruments for the automotive CAN bus network are still lacking. The domestic disclosure of the automotive bus CAN technology is very low. Currently, the CAN network analysis instruments on the market are all foreign products. , such as the CANoe tool of German Vector company, the tool controls the simulation system and test system of the vehicle, but the cost of such test instruments is very high; the software and hardware system is huge; the usability operation for the undetermined body is too complicated; the function scalability and compatibility are relatively low. Poor; long development cycle for automotive bus nodes

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