Abstract
In this paper, vibration monitoring is considered as a tool for detecting hidden defects in electric motors. The results of the development help reduce the risk of emergency shutdowns, thereby increasing the overall service life of the equipment. The product is presented as an experimental vibration monitoring system, in which the IIS3DWB three-axis digital accelerometer serves as a key component. The proposed system includes a data acquisition module (based on the ESP32), a DSP module (digital signal processing), an interface component (Grafana), and a database (InfluxDB). A key feature of the methodology is the sensor attachment to the electric motor housing with the function of recording three vibration components, which are respectively determined in three mutually perpendicular planes. During the experimental studies, the accuracy and performance indicators of the monitoring system were established, including the relative error of RMS acceleration (< 6%), measurement repeatability, wireless data transmission latency (< 15 ms), system response time (< 50 ms), and packet loss during transmission (0%). The use of a broadband sensor made it possible to identify low- and high-frequency defects characteristic of the initial stages of bearing wear with minimal data loss and system response time.