Ultrasonic personnel location identification system
HJ Nastrom - US Patent 4,955,000, 1990 - Google Patents
BACKGROUND OF THE INVENTION 1. Field of the Invention. The present invention is an
electronic system for identifying the location of personnel within a multiple room complex. In …
electronic system for identifying the location of personnel within a multiple room complex. In …
Personnel location system
JE Ward - US Patent 3,439,320, 1969 - Google Patents
ABSTRACT OF THE DISCLOSURE Each of a plurality of persons whose location is to be
ascertained carries a transmitter that produces an ultra Sonic sound signal having a unique …
ascertained carries a transmitter that produces an ultra Sonic sound signal having a unique …
Personnel locator
WF Simon, WC Torrey, CW Hull - US Patent 4,225,953, 1980 - Google Patents
BACKGROUND OF THE INVENTION The present invention pertains to the? eld of person
nel locating systems. Systems of this general type have been proposed in the prior art for …
nel locating systems. Systems of this general type have been proposed in the prior art for …
Ultrasonic tracking and locating system
S Holm, R Holm, S Rostad - US Patent 7,352,652, 2008 - Google Patents
The invention relates to a method and a system for monitoring and position determination of
objects and/or living beings within an area such as, eg a room in a building or a road tunnel …
objects and/or living beings within an area such as, eg a room in a building or a road tunnel …
Ultrasonic locating system
S Holm - US Patent 7,362,656, 2008 - Google Patents
The invention relates to a method and a system for moni toring and position determination of
objects and/or living beings within an area, such as, eg a room in a building or a road tunnel …
objects and/or living beings within an area, such as, eg a room in a building or a road tunnel …
Ultrasonic tracking and locating system
RW Lester - US Patent 3,696,384, 1972 - Google Patents
An ultrasonic tracking and locating system in which an identification code number is
programmed on a console keyboard to activate an encoder which transmits a plurality of …
programmed on a console keyboard to activate an encoder which transmits a plurality of …
Personnel locator system
BL Guest, LC Laney, DK Fredrickson - US Patent 4,990,892, 1991 - Google Patents
[57] ABSTRACT A personnel locator system for monitoring the locations of classes of
personnel. Members of classes of personnel carry portable, infrared transmitters which …
personnel. Members of classes of personnel carry portable, infrared transmitters which …
Ultrasonic positioning and tracking system
N Amorai-Moriya, M Itzkovitch - US Patent 6,141,293, 2000 - Google Patents
57 ABSTRACT A method of tracking an object within a Surveillance area having a
predetermined linear extent. One or more ultra Sound transducers are fixed to the object. A …
predetermined linear extent. One or more ultra Sound transducers are fixed to the object. A …
Locating system and method
RT Shipley - US Patent App. 08/144,746, 1995 - Google Patents
Personnel locating system for use in a facility having a [63] Continuation of Ser. No. 856,646,
Apr. 25, 1986, plurality of rooms having doorways therein comprised abandoned, which is a …
Apr. 25, 1986, plurality of rooms having doorways therein comprised abandoned, which is a …
IR/RF locator
JW Crimmins, JL Saulnier - US Patent 5,917,425, 1999 - Google Patents
An infrared (IR) article or person locator system is described Wherein a plurality of stationary
units are distributed in Zones throughout an enclosure. The article or person carries a …
units are distributed in Zones throughout an enclosure. The article or person carries a …