Firstly,this paper introduces realization of basic differential principle,ratio bias property,starting relay,open CT-circuit alarm relay,voltage restriction principle.

Evaluation of cell morphologic abnormalitiy warning system XT-1800i hematology analyzer;

Evaluation of morphologic abnormalities warnings of the system XE-2100 hematology analyzer;

General introduction to drowning warning system for a swimming pool;

Development of portable electromagnetic radiation detecting and alarming system for individual soldier;

Design and calculation of anti-toppling,automatic alarming and safety locking facilities for automotive cranes;

Development of Thickener Speed Measuring Alarm Device;

The software structure & the alarm programm design for PMC of machining center CNC system;

Design and implementation of fire alarm laying circuitry information system;

Incident response management system based on alert life-circle;

An algorithm of alert correlation based on address correlation graph in distributed intrusion detection system;

Analyzing intrusion alerts based on kernel neural-gas clustering;