Multi-MCU data interaction intelligent acquisition device and method

Abstract

The invention provides a multi-MCU data interaction intelligent acquisition device and method. The device comprises a main MCU processing module, a slave MCU acquisition module and a bottom layer module, wherein the main MCU processing module is used for sending broadcast packets and conducting data interaction with the slave MCU acquisition module and an upper computer; the slave MCU acquisition module is used for acquiring data of intelligent equipment and feeding back a data packet to the main MCU processing module after caching the data; the bottom layer module comprises various kinds of intelligent acquisition equipment. According to the multi-MCU data interaction intelligent acquisition device, the acquisition module is responsible for collecting, primarily processing and packing the data of a sensor, the processing module is responsible for integrating the data of the acquisition module and further processing the data, and finally the face-to-face interaction function is achieved through the modules and the upper computer together. An IIC bus time-sharing transmission mode is used among the modules for interaction, serial ports and network interface resources of the collected data are not occupied, the situations that self-spinning waiting is caused by access of critical resources and the real-time performance of a system is affected are avoided, and the correctness of the data can be ensured.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to a device and method for multi-MCU data interactive intelligent collection. Background technique [0002] Today, with the rapid development of the Internet of Things industry, more and more sensors and intelligent devices are used in computer rooms, agriculture and other fields; how to collect the parameters and status of these devices in a timely manner has become an important issue. For the collection of intelligent equipment, the form of serial port and network is mostly used, and the data transmission is carried out by modbus protocol or TCP / IP protocol. Therefore, collecting data will occupy a lot of interface resources of an MCU. If the core chip with a single network port resource is used for the network interaction of the underlying sensor, the network port of the sensor will no longer be able to communicate with the upper computer, and the PC will not be able ...

AI Technical Summary

Problems solved by technology

When multiple MCUs access the shared memory area, although the slave MCU will notify the master CPU with an interrupt when there is data, when there are multiple slave CPUs, critical resources cannot be read and written at the same time, and the process needs to involve spin locks or atomic locks The blocking waiting mechanism affects the real-time performance of data collection

Although there is no MCU intervention in the memory DMA transfer, the main CPU cannot monitor the DMA transfer status, which interferes with the stability of the data

The method of transmitting data through the serial port is simple to connect, but the interface occupies too much and is inefficient, so it is not suitable for the acquisition system of large data volume

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