Method for transmitting patrol inspection data of proton exchange membrane fuel cell based on CAN bus

Abstract

The invention relates to a method for transmitting patrol inspection data of a proton exchange membrane fuel cell based on a CAN bus. The method comprises the following steps: filtering patrol inspection data acquired by a plurality of patrol inspection instruments according to user configuration so as to obtain the desired patrol inspection data of the cell; compressing the patrol inspection data of the cell and storing the compressed data to a buffer memory to realize data synchronization; and sending the synchronized data according to a set period. According to the invention, a CAN protocol gateway can reduce the volume of forwarding data on the premise of real-time monitoring of a fuel cell system through data compression, data filtering, data synchronization and regular forwarding, thereby avoiding out-of-control of a system caused by incapable timely response of a host computer during high concurrence of monitoring data of the patrol inspection instruments; and the method has the characteristics of stable performance and good reliability.

Description

technical field [0001] The invention relates to a transmission method of a CAN protocol gateway for data monitoring of a fuel cell power generation system, and specifically belongs to the technical field of proton exchange membrane fuel cell control. Background technique [0002] The proton exchange membrane fuel cell system is a complex electrochemical device with multiple inputs and multiple outputs. Fuel cells are generally composed of hundreds of single cells connected in series. The voltage of the single cells directly reflects the working state of the battery stack, and the working conditions such as the pressure of the reaction gas, humidity, and the internal temperature of the battery stack directly affect the performance and life of the battery stack. In order to ensure the reliable operation of the system, these physical quantities need to be detected in real time and uploaded to the host computer in time. The host computer provides the required raw materials and s...

AI Technical Summary

Problems solved by technology

Due to the large number of single cells in the proton exchange membrane fuel cell, sometimes multiple inspection instruments are required to work at the same time. Each inspection instrument directly communicates with the host computer through the CAN bus, which will cause a large amount of concurrent monitoring data.

If the upper computer may not be able to obtain the battery inspection data based on CAN communication in time due to the large amount of monitoring data or the communication times out, then real-time monitoring is meaningless

[0004] The CAN isolation bridge repeaters and hubs currently on the market forward the data intact, and do not effectively integrate the inspection data collected by the inspection instrument according to the characteristics of the proton exchange membrane fuel cell system to reduce the forwarded data. quantity

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