Abstract: Disclosed are an online vacuum degree detection system and method based on single-fiber laser-induced breakdown spectroscopy. In the system, a laser device generates laser that excites the laser through fiber induced breakdown spectroscopy; a fiber coupler couples and injects the laser; a single fiber is connected to the fiber coupler to transmit the laser; one end of an LIBS probe is connected to the single fiber, and the other end of the LIBS probe extends into a vacuum arc-extinguishing chamber; the laser is induced by the LIBS probe to generate plasma, and the plasma is subjected to self-emission imaging and enters the fiber coupler via the LIBS probe; a dichroscope is arranged on the fiber coupler to separate the laser from the plasma; a processor is connected to a camera and a spectrometer.

Abstract: The disclosure discloses an optical path system for detecting a vacuum degree of a vacuum switch and a method thereof.

Abstract: The present disclosure discloses a discharge plasma disinfection device and method thereof. In the disinfection device, a gliding arc electrode pair generates the RNS-dominated reactive gas under the excitation of a gliding arc high-voltage power supply; and a dielectric barrier discharge electrode pair generates the ROS-dominated reactive gas under the excitation of a dielectric barrier discharge high-voltage power supply. These two reactive gases are introduced into a mixing chamber in a specific ratio and are subjected to an effective mixing reaction through an internal recycle system to obtain RNS/ROS mixed reactive gas in which reactive nitrogen species and reactive oxygen species coexist. The RNS/ROS mixed reactive gas may be directly configured to perform disinfection, and may also be configured to process an aqueous solution and then perform disinfection by the processed plasma-activated water.

Abstract: The present disclosure provides a method and apparatus for power equipment online monitoring, intended to solve technical difficulties in power equipment online monitoring. The technology of the present disclosure lies in focusing laser to a to-be-detected substance inside and/or at a surface of the power equipment, generating a plasma by laser induction at the to-be-tested substance, quantitatively analyzing constituents and content of the to-be-detected substance by measuring the spectrum of the plasma, so as to determine a series of phenomena such as aging during running process of power equipment, chemical reaction state, surface absorption, deposition of electrically discharging product, vacuum leakage, trace moisture measurement, solid solution, liquid solution, gas solution and the like, thereby achieving the objective of online monitoring the power equipment.

Abstract: The present invention discloses an identification and protection method of electric shock accidents, comprising the following steps: S100, building a multiport impedance network model of 3D human structure; S200, building a multiport distribution network model of human electric shock based on the impedance network model of the 3D human structure; S300, identifying the electric shock accident and taking actions for protection on the basis of the multiport distribution network model of human electric shock, and by use of wavelet and short-term energy methods. Based on the simulation results of the multiport distribution network model of human electric shock, the present invention could obtain the parametric features of zero sequence current from time/frequency domain, then identifies electric shock and start electric leakage protection by the combination of wavelet and short-term energy methods.