GB1399508A - Ultrasonic tracking and locating systems - Google Patents

Ultrasonic tracking and locating systems

Info

Publication number
GB1399508A
GB1399508A GB3690872A GB3690872A GB1399508A GB 1399508 A GB1399508 A GB 1399508A GB 3690872 A GB3690872 A GB 3690872A GB 3690872 A GB3690872 A GB 3690872A GB 1399508 A GB1399508 A GB 1399508A
Authority
GB
United Kingdom
Prior art keywords
building
transceiver
person
signal
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3690872A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Recognition Devices Inc
Original Assignee
Recognition Devices Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Recognition Devices Inc filed Critical Recognition Devices Inc
Priority to GB3690872A priority Critical patent/GB1399508A/en
Publication of GB1399508A publication Critical patent/GB1399508A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B3/1083—Pager locating systems
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Abstract

1399508 Ultrasonic locating system RECOGNITION DEVICES Inc 8 Aug 1972 36908/72 Heading G4H [Also in Division H4] An ultrasonic locating system comprises means 11, 12 for generating a digital signal identifying a person to be located, fixed transceivers 14 responsive to the signal for generating a corresponding ultrasonic signal, portable pocket transceivers 21 which decode the ultrasonic signal from the nearest transceiver 14 to transmit thereto a recognition pulse if the transceiver 21 is being carried by the person being sought, and a display device 29, 30 responsive to a signal from that transceiver 14 receiving the recognition pulse to indicate the location of the person sought. Transceivers 14, 21 incorporate piezoelectric transducers 17, 18, 22 (the recognition pulse being ultrasonic), and a mercury switch 32 disconnects transceiver 21 from its power source 31 if it is not held vertical. The system may be located in one building (with a transceiver 14 in each room) or may be used to monitor rooms in remote buildings (Figs. 4-7, not shown). The system may continuously scan the building(s) and may be used to connect an outside caller with the telephone extension nearest the person being called. The indicating means 29, 30 may be a CRT display (Figs. 8, 9, not shown), or an indicator panel equipped with lights or light emitting diodes. Means 11, 12 and 29, 30 may be connected to the transceivers 14 by telephone lines 13 or, in one building, the existing wiring may be used; for remote buildings an RF system may be used (Figs. 5, 6). Remote buildings being monitored may incorporate an encoder (Figs. 4, 5) which receives the recognition pulse and transmits a signal to display 29, 30 identifying the building and the location therein of the person sought; alternatively each remote building may have its own display device which is photographed by a TV camera (Figs. 6, 7) which transmits the information for this building to the central display 29, 30.
GB3690872A 1972-08-08 1972-08-08 Ultrasonic tracking and locating systems Expired GB1399508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3690872A GB1399508A (en) 1972-08-08 1972-08-08 Ultrasonic tracking and locating systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3690872A GB1399508A (en) 1972-08-08 1972-08-08 Ultrasonic tracking and locating systems

Publications (1)

Publication Number Publication Date
GB1399508A true GB1399508A (en) 1975-07-02

Family

ID=10392141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3690872A Expired GB1399508A (en) 1972-08-08 1972-08-08 Ultrasonic tracking and locating systems

Country Status (1)

Country Link
GB (1) GB1399508A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002284A1 (en) * 1981-12-30 1983-07-07 MANSSON, Lars, Ake A method of fractioning peat
WO1983004462A1 (en) * 1982-06-09 1983-12-22 Western Electric Company, Inc. A cordless key telephone system employing infrared transmission
GB2190525A (en) * 1986-05-15 1987-11-18 Banyaszati Fejlesztesi Intezet Automatic identification of living creatures and objects
GB2193359A (en) * 1986-07-31 1988-02-03 Multitone Electronics Plc Area communication systems
GB2207787A (en) * 1987-08-06 1989-02-08 James Terence Barker Retrieval of lost road vehicles and other articles
GB2222503A (en) * 1988-09-06 1990-03-07 Callscan Limited Locating apparatus
GB2223380A (en) * 1988-07-27 1990-04-04 Shorrock Ltd Personnel location system
US5062151A (en) * 1983-01-13 1991-10-29 Fisher Berkeley Corporation Communication system
EP0467431A1 (en) * 1990-07-17 1992-01-22 Ericsson Radio Systems B.V. Personal paging system
GB2254755A (en) * 1991-04-11 1992-10-14 Gen Electric Co Plc Active device for pabx control
GB2283389A (en) * 1993-10-12 1995-05-03 Mitel Corp Telephone subscriber presence detector
US5426425A (en) * 1992-10-07 1995-06-20 Wescom, Inc. Intelligent locator system with multiple bits represented in each pulse
USRE35035E (en) * 1980-10-06 1995-09-12 Fisher Berkeley Corporation Locating system and method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35035E (en) * 1980-10-06 1995-09-12 Fisher Berkeley Corporation Locating system and method
WO1983002284A1 (en) * 1981-12-30 1983-07-07 MANSSON, Lars, Ake A method of fractioning peat
WO1983004462A1 (en) * 1982-06-09 1983-12-22 Western Electric Company, Inc. A cordless key telephone system employing infrared transmission
US5062151A (en) * 1983-01-13 1991-10-29 Fisher Berkeley Corporation Communication system
GB2190525A (en) * 1986-05-15 1987-11-18 Banyaszati Fejlesztesi Intezet Automatic identification of living creatures and objects
GB2193359B (en) * 1986-07-31 1990-07-11 Multitone Electronics Plc Area communications systems
GB2193359A (en) * 1986-07-31 1988-02-03 Multitone Electronics Plc Area communication systems
GB2207787A (en) * 1987-08-06 1989-02-08 James Terence Barker Retrieval of lost road vehicles and other articles
GB2207787B (en) * 1987-08-06 1991-10-30 James Terence Barker Retrieval of lost road vehicles and other articles
GB2223380A (en) * 1988-07-27 1990-04-04 Shorrock Ltd Personnel location system
GB2222503A (en) * 1988-09-06 1990-03-07 Callscan Limited Locating apparatus
EP0467431A1 (en) * 1990-07-17 1992-01-22 Ericsson Radio Systems B.V. Personal paging system
GB2254755A (en) * 1991-04-11 1992-10-14 Gen Electric Co Plc Active device for pabx control
US5426425A (en) * 1992-10-07 1995-06-20 Wescom, Inc. Intelligent locator system with multiple bits represented in each pulse
US7061396B1 (en) 1992-10-07 2006-06-13 Dwyer Precision Products, Inc. Intelligent locator system
GB2283389A (en) * 1993-10-12 1995-05-03 Mitel Corp Telephone subscriber presence detector
US5596633A (en) * 1993-10-12 1997-01-21 Mitel Corporation Charger/detector for cordless telephones
GB2283389B (en) * 1993-10-12 1998-08-12 Mitel Corp Charger/detector for cordless telephones

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee