As one of the important connecting components of wind turbines, the damage status of blade root bolts is closely related to the safety of wind turbines. However, traditional operation and maintenance methods cannot detect damaged bolts in a timely and accurate manner. Therefore, this paper designs an embedded-based ultrasonic monitoring system for blade root bolts of wind turbines. The monitoring system, with embedded chips and FPGA chips as its core, combines high-performance ultrasonic chips and ADC chips to achieve ultrasonic detection of blade root bolts. Through algorithms, damage characteristics in the signal are extracted and analyzed to automatically identify the current working state of the blade root bolt and determine whether there is damage. Experimental results show that the monitoring system can effectively acquire the slight time difference caused by the deformation of the bolt under stress, and calculate an ultrasonic stress coefficient of 0.585.

Lipeng Peng, Shuyi Yang, Yaowei Song. Design of an ultrasonic monitoring system for wind turbine blade root bolts based on embedded technology. Academic Journal of Engineering and Technology Science (2026), Vol. 9, Issue 3: 77-87. https://doi.org/10.25236/AJETS.2026.090311.

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