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<p>ADAS (Advanced Driver Assistance System) is a key technology for autonomous driving, with increasing focus on ensuring driver safety and convenience. Currently, autonomous driving still requires driver intervention, emphasizing the importance of the HOD (Hands Off Detection) pad, which detects the steering wheel grip status. Communication issues between the vehicle ECU (Electronic Control Unit) and the HOD pad–equipped steering wheel can pose safety risks, making systematic analysis of manufacturer-specific communication protocols essential for pre-function inspections. However, differing protocols among manufacturers present technical challenges. This study proposes an HOD pad function inspection system that collects data from HOD pads installed on IEE and Joyson steering wheels and enables functional verification and monitoring via each manufacturer’s CAN FD communication interface. The proposed system verifies normal operation based on DTC (Diagnosis Trouble Codes), capacitance, and resistance values, while an automated gripper ensures measurement reliability. By facilitating ECU-based detection of HOD pad faults through manufacturer-specific protocol implementation, the inspection equipment contributes to enhancing safety in autonomous driving environments.</p>

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Development of a CAN FD Communication-Based HOD Pad Function Inspection System

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Wu Sung Choi,
  • Jae-Wan Park,
  • Jun-Hee Lee,
  • Myung-Hoon Sung,
  • Jae-Won Kim,
  • Yong-Gyu Jeong,
  • Baek-Soon Kwon,
  • Han Byeol Bae,
  • Joo Woo,
  • Jae Hoon Jeong,
  • Teak Young Seung

摘要

ADAS (Advanced Driver Assistance System) is a key technology for autonomous driving, with increasing focus on ensuring driver safety and convenience. Currently, autonomous driving still requires driver intervention, emphasizing the importance of the HOD (Hands Off Detection) pad, which detects the steering wheel grip status. Communication issues between the vehicle ECU (Electronic Control Unit) and the HOD pad–equipped steering wheel can pose safety risks, making systematic analysis of manufacturer-specific communication protocols essential for pre-function inspections. However, differing protocols among manufacturers present technical challenges. This study proposes an HOD pad function inspection system that collects data from HOD pads installed on IEE and Joyson steering wheels and enables functional verification and monitoring via each manufacturer’s CAN FD communication interface. The proposed system verifies normal operation based on DTC (Diagnosis Trouble Codes), capacitance, and resistance values, while an automated gripper ensures measurement reliability. By facilitating ECU-based detection of HOD pad faults through manufacturer-specific protocol implementation, the inspection equipment contributes to enhancing safety in autonomous driving environments.