Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-02-17
1999-05-04
Tong, Nina
Communications: electrical
Condition responsive indicating system
Specific condition
3405736, 3406916, 379 38, G08B 2300
Patent
active
059008172
ABSTRACT:
A monitoring system for indicating to a supervisory individual, such as an adult, when a monitored individual, such as a child, has moved beyond a safe predefined maximum distance limit. The monitoring system includes a first electronic module suitably fixed to the monitored individual and arranged to exchange signals that are useful to determine the relative distance and direction the first electronic module is from a suitable second electronic module. The second electronic module, which is in the possession of the supervisory individual, is arranged to exchange signal information with the first electronic module and indicate to the supervisory individual information including when the distance between, and the direction of, the monitored individual. Should the distance between the monitored and supervisory individuals increase beyond the maximum distance limit, an alarm situation may be annunciated by an audio annunciator (or other suitable annunciation device). The second electronic module includes a direction display and distance display, that may be employed by the supervisory individual to locate the monitored individual.
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