Controller area network (CAN)-bus-based excavator electrical component control system and method

Abstract

The invention discloses a controller area network (CAN)-bus-based excavator electrical component control system, which comprises a master controller, a keyboard, a power allocation module controller, a cooling system controller and an engine controller, wherein the master controller, the keyboard, the power allocation module controller, the cooling system controller and the engine controller are connected by a CAN bus. The system makes a breakthrough in conventional signal transmission realized by hardwire connection between a control switch and a relay, and realizes control over excavator electrical components by bus communication among nodes in an overall CAN network by using a CAN bus technology, thereby simplifying overall wire harnesses and meeting the communication requirements of Euro III and Euro IV engines.

Description

technical field [0001] The invention relates to a control technology, in particular to a control system and method for electric parts of excavators based on CAN bus. Background technique [0002] CAN is the abbreviation of Controller Area Network (CAN). It was developed by German BOSCH company, which is famous for R&D and production of automotive electronic products, and eventually became an international standard (ISO11898). It is one of the most widely used field buses in the world. In North America and Western Europe, the CAN bus protocol has become the standard bus for automotive computer control systems and embedded industrial control LANs, and has a J1939 protocol designed for large trucks and heavy machinery vehicles with CAN as the underlying protocol. In recent years, its high reliability and good error detection ability have been paid more and more attention, and it is widely used in automotive computer control systems and industrial environments with harsh ambient...

AI Technical Summary

Problems solved by technology

The technical problems that still exist are: (1) At present, the data transmission and exchange in the electrical control of most excavators are mainly realized through hard-wired connections. In this way, with the increase of electrical components, the wiring harness of the whole machine will become increasingly cumbersome. It brings a lot of trouble to design, installation and maintenance, high failure rate and poor communication reliability; (2) In order to comply with the global trend of environmental protection and energy saving, more and more excavators are equipped with Euro III and Euro IV EFI engines. The amount of information to be transmitted has increased significantly, and most of these information are CAN messages based on the J1939 protocol, which has brought great communication obstacles to excavator electrical components that do not support CAN communication

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