Self-powered sensor unit for food packaging machine

The sensor unit (10) is configured to be mounted in the vicinity of an electric motor (20) in a food packaging machine. The sensor unit comprises at least one sensor device configured to generate sensor data representative of an environmental parameter of the food packaging machine, a wireless transmitter for transmitting the sensor data, and a power source for providing energy to the at least one sensor device and the wireless transmitter. The sensor unit (10) is self-powered by energy harvesting of the magnetic fields (B1, B2) generated by the electric motor (20) using at least one receiving coil in the power source, providing ease of installation and maintenance. 传感器单元(10)被配置为安装在食品包装机中的电动马达(20)的附近。传感器单元包括：被配置为生成表示食品包装机环境参数的传感器数据的至少一个传感器装置，用于传输传感器数据的无线发射器，以及用于向至少一个传感器装置和无线发射器提供能量的电源。传感器单元(10)通过使用电源中的至少一个接收线圈，通过对由电动马达(20)生成的磁场(B1,B2)进行能量收集而自供电，提供了安装和维护的便利。