CANOPEN main control equipment based on PC104 bus and control method of CANOPEN main control equipment

Abstract

The invention provides CANOPEN main control equipment based on a PC104 bus and a control method for the CANOPEN main control equipment. The equipment comprises a PC104 single-board computer, a CANOPEN main station communication card and a power supply board, wherein the PC104 single board is connected with the CANOPEN main station communication card through the PC104 bus; the CANOPEN main station communication card comprises a CANOPEN protocol controller, a PC104 bus interface circuit formed by a logic door circuit, an address converter, a latch and a buffer; an input end of the PC104 bus interface circuit is connected with the PC104 bus; an output end of the PC104 bus interface is connected with the address converter, the latch, the buffer and the CANOPEN protocol controller respectively; the input end of the power supply board is connected with an external power supply; an output end of the power supply board is connected with the PC104 single board computer and the CANOPEN main station communication card. A universal CANOPEN main station communication card with the PC104 bus interface is expanded on the PC104 single-board computer, so that the CANOPEN protocol controller controls timing sequence to be fully completed through the logic door gate without participation of the programmable equipment, and thus, the equipment is convenient to update and maintain.

Description

technical field [0001] The invention relates to a network control device technology of a locomotive and vehicle based on the CANOPEN network technology, in particular to a CANOPEN main control device and a control method based on a PC104 bus. Background technique [0002] Due to the advantages of reliability, real-time, low cost, anti-interference, compatibility and other aspects, CAN-bus (CAN-BUS is CAN bus technology, the full name is "Controller Area Network-BUS", Can-Bus bus technology was first used in the communication of electronic systems of weapons such as aircraft and tanks. The use of this technology in civilian vehicles originated in Europe. In automobiles, this bus network is used for the transmission of various sensor data on the vehicle. transmission.) and its high-level protocol CANOPEN (is a high-level communication protocol based on the control area network "Control Area Network, that is, CAN", including communication sub-protocols and device sub-protocols ...

AI Technical Summary

Problems solved by technology

[0004] The existing CANOPEN master control equipment generally adopts a processor with its own CAN protocol controller or a processor that completes the timing conversion of an external CAN protocol controller by a programmable logic device; the processor with its own CAN protocol controller has insufficient processing capacity. It is difficult to exceed 100MIPS, and peripheral resources such as RAM and flash are limited; the processor that completes the timing conversion of the external CAN protocol controller by the programmable logic device updates the program of the programmable logic device to meet the read / write cycle of the CAN protocol controller Timing, two programs of the processor and the programmable logic device need to be updated, and the maintainability is not strong

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