Low-power-consumption CAN bus communication network based on dynamic management and control method thereof

Abstract

The invention relates to a low-power-consumption CAN bus communication network based on dynamic management. The low-power-consumption CAN bus communication network comprises a master control CAN node, a CAN bus line, a control signal decoding module and a plurality of controlled CAN nodes. On the basis of analyzing communication task requirements, the master control CAN node dynamically manages working modes of the controlled CAN nodes according to a control signal decoding strategy, so that the controlled CAN nodes are in a high-speed working mode only when communication tasks exist, otherwise, the controlled CAN nodes are in a low-power-consumption mode, and the overall power consumption of a bus network is reduced. The method is applied to the field of field communication buses, a one-to-many/point-to-point master-slave working mode dynamic control strategy based on task demand analysis is designed for CAN nodes, the overall power consumption of the bus is effectively reduced, and the low power consumption performance of a bus application environment is improved.

Description

technical field [0001] The invention relates to a CAN bus communication network, belonging to the field of network communication and field bus. It specifically relates to a dynamic management-based low-power CAN bus communication network and a control method thereof. Background technique [0002] CAN bus communication network is the abbreviation of controller area network, which was developed by German BOSCH company, which is famous for R&D and production of automotive electronic products, and finally became an international standard (ISO 11898), which is one of the most widely used field buses in the world . CAN bus communication network has been widely used in industrial automation, ships, aviation, medical equipment, industrial equipment, etc. due to its high performance and reliability. The CAN controller works in a variety of ways, and each node in the network can compete to send data to the bus in a bit-by-bit arbitration mode with a lossless structure according to t...

AI Technical Summary

Problems solved by technology

The CAN controller works in a variety of ways, and each node in the network can compete to send data to the bus in a bit-by-bit arbitration mode with a lossless structure according to the bus access priority, and each distributed node in the CAN bus communication network is simultaneously on standby at high speed. mode, although the reliability of the bus network is increased, but in the case of a large number of nodes, the overall power consumption of the bus network is relatively large, which is not conducive to controlling the overall power consumption of the product or system where the bus is located

Images