GB2217084A - Personal security device - Google Patents

Personal security device Download PDF

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Publication number
GB2217084A
GB2217084A GB8905121A GB8905121A GB2217084A GB 2217084 A GB2217084 A GB 2217084A GB 8905121 A GB8905121 A GB 8905121A GB 8905121 A GB8905121 A GB 8905121A GB 2217084 A GB2217084 A GB 2217084A
Authority
GB
United Kingdom
Prior art keywords
parts
warning
communication
personal security
shall
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.)
Withdrawn
Application number
GB8905121A
Other versions
GB8905121D0 (en
Inventor
Mark Sillett
Michael Huggins
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8905121A priority Critical patent/GB2217084A/en
Publication of GB8905121D0 publication Critical patent/GB8905121D0/en
Publication of GB2217084A publication Critical patent/GB2217084A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1427—Mechanical actuation by lifting or attempted removal of hand-portable articles with transmitter-receiver for distance detection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The two part personal security device comprises a transmitter and receiver, the former being attached to an object or person to be protected, the latter being carried by a person, or set close to the object to be protected. When the two parts of the device are separated by more than a predetermined amount the receiver emits an audio warning tone. The receiver also emits a warning tone when the batteries are below the minimum required capacity.

Description

PERSONAL SECURITY DEVICE This invention relates to an electronic alarm device.
These days owners are frequently separted from there property hence the need for an alarm device to alert of such events.
1 - Parents from children.
2 - Owners from pets.
3 - Businessmen from briefcases.
4 - Ladies from handbags.
5 - Etc By either forgetfulness or theft.
This device consists of a receiver and transmitter. If the two items are separated from each other by more than the specified distance the receiver emits an audio warning tone.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows the block diagram of the transmitter circuitry; Figure 2 shows the block diagram of the receiver circuitry.
Refering to figure 1 the transmitter circuitry consists of; two clock ciruits, the first clock (1) giving a square waveform, for example running at about 1OHHz, the second clock (4) giving a short pulse every second or so, for example 20 ms every second.
A voltage pump circuit (5) to provide larger voltages than the battery voltage, for example with a battery voltage of 9 volts the circuit will give 48 volts, driven by the clock circuit (1).
A sine wave oscillator, for example of frequency 25KHz, (3) providing the drive for the transmitting ultrasonic transducer (6).
A power switch (2) operated by the second clock circuit (4) to provide short bursts of power for the oscillator (3).
Refering to figure 2 the receiver circuitry consists of; A receiving ultrasonic transducer (1) feeding the amplifier circuit (2), with a gain of for example 50,000, which in turn feeds the detector circuit (3).
A low battery level detector (5) feeding the detector (3).
The detector (3) drives an audio transducer (4) when either, the receiver cannot detect a signal, or the battery voltage is below the desired level, for example 4.5volts.

Claims (6)

1 The device consists of two independent parts in communication one with the other.
When the communication between the two parts is broken one of the parts emits a warning.
2 The device as claimed in claim 1 the two parts communicating by means of ultrasonic sound waves.
3 The device as claimed in claim 1 the two parts communication by means of radio waves.
4 The device as claimed in claim 1 the warning shall be by means of an audible tone.
5 The device as claimed in claim 1 the warning shall be by means of a visual signal.
6 A personal security device substantially as described herein with reference to the figures 1 and 2 of the accompanying drawings.
6 The device as claimed in claim 1 the warning shall be by means of electromagnetic waves.
7 A personal security device substantially as described herein with reference to the figures 1 and 2 of the accompanying drawings.
Amendments to the claims have been filed as follows 1 The device consists of two independent parts in communication one with the other.
When the communication between the two parts is broken one of the parts emits a warning.
2 The device as claimed in claim 1 the two parts communicating by means of ultrasonic sound waves, at nominally 25KHz.
3 The device as claimed in claim l the warning shall be by means of an audiable tone.
4 The device as claimed in claim 1 the warning shall be by means of a visual signal.
5 The device as claimed in claim l the warning shall be by means of electromagnetic waves.
GB8905121A 1989-03-07 1989-03-07 Personal security device Withdrawn GB2217084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8905121A GB2217084A (en) 1989-03-07 1989-03-07 Personal security device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8905121A GB2217084A (en) 1989-03-07 1989-03-07 Personal security device

Publications (2)

Publication Number Publication Date
GB8905121D0 GB8905121D0 (en) 1989-04-19
GB2217084A true GB2217084A (en) 1989-10-18

Family

ID=10652840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8905121A Withdrawn GB2217084A (en) 1989-03-07 1989-03-07 Personal security device

Country Status (1)

Country Link
GB (1) GB2217084A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236000A (en) * 1989-09-01 1991-03-20 Ronald George Connor Theft or loss alarm system
GB2243476A (en) * 1990-04-26 1991-10-30 David Leonid Kramarenko Anti-theft device for water craft
GB2275804A (en) * 1993-03-06 1994-09-07 Manjit Singh Bains Child alarm/monitor
GB2350714A (en) * 1999-06-01 2000-12-06 Ronald Anderson Garden Personal items alarm
GB2392537A (en) * 2002-08-27 2004-03-03 William Barrington Lawes Distance monitoring alarm

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520196A (en) * 1976-05-27 1978-08-02 Holzer W Alarm and theft prevention apparatus
US4260982A (en) * 1979-10-25 1981-04-07 Debenedictis Angelo P Pulse code modulation responsive alarm system
GB2071956A (en) * 1980-01-08 1981-09-23 Optomech Electronic Co Electronic alarm device
GB2112600A (en) * 1981-09-02 1983-07-20 Kunwar Chander Jeet Singh Out of proximity alarm system
EP0093463A1 (en) * 1982-04-29 1983-11-09 Michael Givaty System, method and apparatus for protecting objects, individuals and entities
WO1984003975A1 (en) * 1983-03-29 1984-10-11 Tello Hb Reminder alarm system
GB2182183A (en) * 1985-10-26 1987-05-07 Robert Peter Andow Child vicinity radio alarm system
GB2198865A (en) * 1986-12-10 1988-06-22 Transalarm Ltd Theft alarm system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520196A (en) * 1976-05-27 1978-08-02 Holzer W Alarm and theft prevention apparatus
US4260982A (en) * 1979-10-25 1981-04-07 Debenedictis Angelo P Pulse code modulation responsive alarm system
GB2071956A (en) * 1980-01-08 1981-09-23 Optomech Electronic Co Electronic alarm device
GB2112600A (en) * 1981-09-02 1983-07-20 Kunwar Chander Jeet Singh Out of proximity alarm system
EP0093463A1 (en) * 1982-04-29 1983-11-09 Michael Givaty System, method and apparatus for protecting objects, individuals and entities
WO1984003975A1 (en) * 1983-03-29 1984-10-11 Tello Hb Reminder alarm system
GB2182183A (en) * 1985-10-26 1987-05-07 Robert Peter Andow Child vicinity radio alarm system
GB2198865A (en) * 1986-12-10 1988-06-22 Transalarm Ltd Theft alarm system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236000A (en) * 1989-09-01 1991-03-20 Ronald George Connor Theft or loss alarm system
GB2243476A (en) * 1990-04-26 1991-10-30 David Leonid Kramarenko Anti-theft device for water craft
GB2275804A (en) * 1993-03-06 1994-09-07 Manjit Singh Bains Child alarm/monitor
GB2350714A (en) * 1999-06-01 2000-12-06 Ronald Anderson Garden Personal items alarm
GB2392537A (en) * 2002-08-27 2004-03-03 William Barrington Lawes Distance monitoring alarm
GB2392537B (en) * 2002-08-27 2007-03-28 William Barrington Lawes Monitoring system

Also Published As

Publication number Publication date
GB8905121D0 (en) 1989-04-19

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)