Bus-based input/output (IO) acquisition and control extending device

Abstract

The invention discloses a bus-based input / output (IO) acquisition and control extending device. The device comprises an advanced reduced instruction-set computer machine (ARM) control module, a power conversion module, a controller area network (CAN) bus communication module, a switching value input module, an analog quantity input module, a pulse width modulation (PWM) output module, an analog quantity output module and other parts, wherein the modules are connected with the ARM control module. The device can be connected with various analog quantity sensors, switching value sensors and external control equipment through the interfaces of the modules and connected with a system master controller through a CAN bus, converts sensor information into a bus-based signal and transmits the bus-based signal to the master controller by a CANOPEN communication protocol, receives the control command of the master controller and controls all output ports. The extending device can extend the interface number of the master controller and solve the problem of distance limitation generated when the sensors or the external control equipment is connected with the master controller. The bus-based IO acquisition and control extending device can be applied to various distributed control systems and is particularly suitable for the integration of engineering machinery control systems.

Description

technical field [0001] The present invention relates to the technical field of information processing, in particular to a bus-type IO acquisition and control expansion device, which is designed and realized by using embedded technology and field bus technology to expand the number of acquisition ports and control ports of the main controller, and is suitable for The control system of construction machinery vehicle with complex structure is also suitable for control system and monitoring system with distributed structure. Background technique [0002] Construction machinery vehicle is a very important type of working equipment in the current production and construction. It often has a relatively complex structure and many moving parts. With the continuous improvement of production requirements, the control flexibility and mobility of these equipment have also been raised. higher and higher requirements. The conventional distributed control method is usually that the entire e...

AI Technical Summary

Problems solved by technology

However, in conventional bus-type IO nodes, due to the design concept of modular functions, input functions and output functions are often designed independently, and digital modules and analog modules are often designed separately

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