2671results about How to "Achieve isolation" patented technology

The invention belongs to the technical field of electronics, and relates to a street lamp illumination LED driving power supply. The street lamp illumination LED driving power supply consists of a rectification filter circuit, a pre-stage fly-back DC-DC constant voltage source circuit, a post-stage DC-DC constant current source circuit and an intelligent PWM dimming control circuit, wherein the pre-stage fly-back DC-DC constant voltage source circuit consists of a power factor correction (PFC) and PWM control chip NCP1653, a light-coupled isolation detection circuit and an isolation switchingtransformer, and realizes input power factor correction and AC input-to-DC constant voltage output function together with the rectification filter circuit; and the pre-stage DC-DC constant current source circuit is a multi-path constant current output circuit, and each path of constant current output circuit is a Buck-type DC-DC converter with the same structure and realizes conversion from constant voltage to constant current. The intelligent PWM dimming control circuit controls the working state of each path of constant current output circuit through multi-path different control signals to realize intelligent dimming. Compared with the conventional common LED street lamp illumination driving power supply, the street lamp illumination LED driving power supply can save a large amount of peripheral circuits, has the advantages of low cost, small volume, intelligent controllable dimming and the like, and is suitable for batch production.

The invention relates to a container-based malicious code detection sandbox system and detection method. The method is characterized by comprising the following steps that malicious code detection forsuspicious programs is initiated; a container management system selects container mirror images to configure containers; the container management system starts the containers and triggers starting orexecutive operations of the suspicious programs in the containers; the system calls a Hook kernel module to intercept system call of the containers and sends system call information to a malicious behavior analysis engine; the malicious behavior analysis engine performs modeling and analysis on the suspicious programs through the system call information of the containers to generate an analysis report, judges whether the programs contain malicious codes or not, updates a malicious code sample database and notifies a host system; and the host system determines whether running of the containersis stopped or not according to an analysis result of the malicious behavior analysis engine, and clears running data.