Problems of synchronous and noise immune transmission of information in intelligent mechatronic systems

Abstract

This paper considers the problem of synchronous and noise free information exchange in the low-end and mid-end mechatronic systems such as multi-axis 3D FDM printers. Problems which prevents the usage of common industrial technologies and protocols such as ModBus, CAN etc. are stated. Approach based on the usage of known standard interfaces present in general-purpose microcontrollers for their successful application in mechatronic systems is proposed. As an example, a method based on modification of existing STM32F303 MCU's I2C interface by introducing additional noise immunity with corrective codes, as well as creating mechanisms for multicasting and arbitration is proposed. In addition, the mechanism for providing optical isolation with drivers P82B96 is considered.