USB-CAN bus adapter based on microcontroller

Abstract

The USB-CAN bus adapter comprises a USB port for connecting to a PC, a CAN bus port for connecting to the CAN bus and a MCU for connecting the USB port and the CAN bus port through a USB bus controller and a CAN bus controller in order to implement the data transmission between the PC and CAN bus.

Description

technical field [0001] The invention relates to an interface device between a computer and peripheral equipment. In particular a microcontroller based USB-CAN bus adapter. Background technique [0002] CAN (Controller Area Network) bus, as a multi-host local network field bus, has been widely used in the field of decentralized control of factories due to its flexibility and convenience in networking, high efficiency and reliability of communication, and low cost. . Modern factory automatic control requires both "decentralized control" and effective "centralized management" to ensure the safety and efficiency of production, and the field bus connecting various devices and the workstation (usually an industrial The communication between PCs) becomes a critical throat. In the past, the communication between the monitoring station and the field bus mostly used two methods: [0003] 1. Design a dedicated communication card and field bus for communication; [0004] 2. Interfa...

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Problems solved by technology

[0005] Designing a dedicated CAN bus communication card requires understanding complex bus protocol standards such as PCI or EISA. The difficulty of the design can be imagined. If the RS-232C standard interface with the highest baud rate of Interface with the CAN bus with a data rate of 1Mb/s will undoubtedly cause a communication "bottleneck

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