Title: Trace displaying safety system
Application Number: 97104145 Application Date: 1997.04.25
Publication Number: 1197971 Publication Date: 1998.11.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G08B19/00
Applicant(s) Name: Huang Jinfu Address: 100026
Inventor(s) Name:
Attorney & Agent:
Abstract:
     Trace displaying safety system includes portable signal emitter, signal receiver, DC isolator, network and computer. The signal emitted by the emitter inside certain range is received by the signal receiver set in bed room, meeting room and other places and transmitted to computer through the DC isolator and network. The trace data may be displayed, stored and printed and this makes it possible to fine someone's trace at any time and look up the persons entering some place. The said system is suitable for display of trace and safety use in various units.
Time: 6