Article Details

Title · Authors · Abstract · Keywords · DOI · References

Research and Implementation of Firmware Upgrade System for Main Control Chip in Train Braking System

BIAN Cunjian, WANG Jian, WANG Qi

(CRRC Nanjing Puzhen Haitai Brake Equipment Co., Ltd., Nanjing 211800, China)

Section：Electronic Engineering · Vol. 2026, Issue 20 · Pages：17-21 · 2096-4706（2026）20-0017-05 · CLC number：TP311 · Document code：A · DOI：10.19850/j.cnki.2096-4706.2026.20.004

Abstract

To address the issue of cumbersome firmware upgrades in the testing and subsequent production maintenance of rail transit vehicles, this paper designs and develops a firmware upgrade system based on the UDS and CANTP protocols. This system enables the host computer to send the firmware to be upgraded to the communication board via the UDS protocol, and then the communication board forwards the data to the controller's main control chip, the S32K344, through the CANTP protocol, thereby completing the firmware upgrade. The solution is tested and effectively validated in a brake control device. The results show that the firmware upgrade system can reliably achieve online firmware upgrades of the controller, improving the convenience of software upgrades and increasing the efficiency of after-sales maintenance by approximately 20%.

Keywords

Bootloader; UDS; CANTP; firmware upgrade; S32K344

References

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About the authors

Bian Cunjian (November 1992-), male, Han ethnicity, from Nanjing, Jiangsu, engineer, master's student, research interests include embedded software development.