Laser-induced Breakdown Spectroscopy Sensor System for Internet of Things

A miniature laser-induced breakdown spectroscopy (LIBS) sensor system for internet of things (IOT) is reported. This system is composed of a micro circuit subsystem and an optical fiber laser subsystem. Power supply, control, refrigeration, optical grating spectrometer, radio frequency identification (RFID), and ZigBee module are integrated into the micro circuit subsystem. All optical components are included in the optical fiber laser subsystem. The LIBS signals of certain tissues, such as nail, hair, etc, of the users stimulated by the infrared pulse laser can be collected, processed and transmitted by this IOT sensor system. This LIBS information can supply some healthy conditions and then be diagnosed by the remote medical experts.