GB2391672A - Vehicle obstacle warning system using polling of remote transponder tags - Google Patents

Vehicle obstacle warning system using polling of remote transponder tags Download PDF

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Publication number
GB2391672A
GB2391672A GB0217943A GB0217943A GB2391672A GB 2391672 A GB2391672 A GB 2391672A GB 0217943 A GB0217943 A GB 0217943A GB 0217943 A GB0217943 A GB 0217943A GB 2391672 A GB2391672 A GB 2391672A
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GB
United Kingdom
Prior art keywords
vehicle
unit
remote devices
vicinity
detection system
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Withdrawn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
GB0217943A
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GB0217943D0 (en
Inventor
James Griffiths
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 GB0217943A priority Critical patent/GB2391672A/en
Publication of GB0217943D0 publication Critical patent/GB0217943D0/en
Publication of GB2391672A publication Critical patent/GB2391672A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/758—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator powered by the interrogation signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/04—Systems determining presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9329—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles cooperating with reflectors or transponders

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

A detection system for a vehicle 10 such as a forklift truck comprises a unit for mounting to the vehicle 10 and a plurality of remote devices 11 arranged to be carried by personnel within the working environment of the vehicle. The unit in the vehicle 10 is arranged to sense for the presence of the remote devices 11 and to output a warning signal to the driver when any device 11 is detected within the vicinity of the vehicle 10. In this manner accidents between pedestrians and vehicles are avoided. Also, false alarms are avoided because the unit will only detect the devices and not other objects within the working environment of the vehicle. The remote devices may be passive resonant transponder tags. The presence of the tags may be achieved by polling of the transponders in the close vicinity of the vehicle. The polling may only be made when the vehicle is reversing and may only be made in a limited area.

Description

( Pedestrian Detection System for Vehicles This invention relates to a
system for vehicles which is able to detect the presence of a person within the vicinity of the vehicle.
Accidents between pedestrians and vehicles, such as 5 forklift trucks, are common in working environments where the two operate side-by-side. One reason for this is that the driver of the vehicle often has a restricted view and is thus unable to see whether a pedestrian is in the way. Another reason for this is that the driver of the vehicle often has to 10 concentrate on performing another task whilst manoeuvring the vehicle. Reversing systems are known for vehicles, which emit an audible or visual warning signal when the vehicle comes within a pre-determined distance of an object. In an alternative 15 embodiment, the system emits a pulsed warning signal, with the frequency of the warning signal varying according to the distance between the vehicle and the object.
Reversing systems of the above-mentioned type are unsuitable for use on vehicles which operate in confined 20 working environments, such as building sites, factories and warehouses, since other obstructions in the vicinity of the vehicle will cause warning signals to be regularly emitted, with the result that the driver is liable to ignore genuine warnings or to turn the system off altogether.
25 Another disadvantage of known reversing systems is that they have a limited angle of operation and thus may not detect persons until it is too late. Furthermore, the limited angle of operation makes the systems unsuitable for use in vehicles which have poor all-round visibility.
30 I have now devised a system for vehicles which is able to detect the presence of pedestrians within the vicinity of the vehicle and which alleviates the above-mentioned problems.
In accordance with this invention, as seen from a first aspect, there is provided a detection system for a vehicle 35 comprising a unit for mounting to the vehicle and a plurality of remote devices arranged to interact with the unit, the unit
( being arranged to sense for the presence of said remote devices within the vicinity of the vehicle and to output a warning signal when any device is detected.
It is envisaged that all personnel in a working 5 environment could be issued with a tag, badge, pass or other article which incorporates a remote device. In use, the unit in the vehicle will detect if a remote device comes within the vicinity of the vehicle and will alert the driver accordingly.
The unit will only detect the devices and thus false alarms are 40 avoided.
In one embodiment, the unit transmits a polling signal in the vicinity of the vehicle, the remote devices being arranged to transmit a signal back to the unit when the polling signal is received.
15 Preferably the polling signal induces an electrical current in the remote devices, which provides the power for the devices to operate when in the vicinity of the vehicle. In this manner, no power source is required for the remote device, since it is inductively powered by the polling signal from the 20 vehicle.
In an alternative embodiment, the unit transmits a polling signal in the vicinity of the vehicle, the remote devices being arranged to modify the polling signal transmitted by the unit, the unit being arranged to detect a modified 25 signal.
Systems of this type are commonly used to detect theft in libraries and shops. The remote devices thus preferably comprise a tuned circuit which resonates in response to the polling signal, the resonance being detected by the unit.
30 The system may be operative only when the vehicle is reversing for example and thus, the unit could be controlled by a control on the vehicle which selects its direction of travel. In accordance with this invention, as seen from a 35 second aspect, there is provided vehicle incorporating a unit of a detection system, the unit being arranged to interact with a plurality of remote devices of the system, the unit being
( arranged to sense for the presence of said remote devices within the vicinity of the vehicle and to output a warning signal when any device is detected.
An embodiment of this invention will now be described 5 by way of an example only and with reference to the accompanying drawing, the single figure of which is a schematic diagram of a system in accordance with this invention.
Referring to the drawing, there is shown a vehicle such as a folk-lift truck 10 and a plurality of remote devices 10 e.g.ll, which may be in the form of a badge, tag or label.
Alternatively, the device 11 may be permanently attached to an item of clothing, footwear or headgear.
The folk-lift truck 10 comprises a control unit 12, comprising a transmitter 13 and a receiver 14. The output of 15 the receiver 14 is connected to an audible warning device 1B.
The remote device 11 comprises an antenna 15 and a tuned circuit 16.
In use, the transmitter 13 on the folk-lift truck 10 transmits a lowpower electromagnetic signal, say within a 20 radius of about 20 metres of the folk-lift truck. When a remote device 11 enters into the area covered by the transmitted signal, the antenna 15 in the device 11 picks up the signal and cause the tuned circuit 16 to resonate. The electromagnetic signal induces sufficient power to activate the device without 25 the need for another power source.
The receiver 14 in the folk-lift truck lo detects the resonance of the tuned circuit and activates the warning device 18 in the folk-lift truck 10 to alert the driver that a person has been detected in the vicinity.
30 The unit 12 in the folk-lift truck 10 may only become operational when the vehicle is reversing and in order to achieve this, the unit could be connected to a direction control lever 17 of the folk-lift truck. Furthermore, the signal transmitted by the transmitter 13 of the folklift truck 35 could be directional, such that the unit 12 will only detect devices 11 within a certain area.
It will be appreciated that the unit 12 is able to
( reliably detect any persons carrying devices 11, so that the driver of the folk-lift truck can take appropriate action to avoid accidents. The unit 12 is unaffected by other obstacles within the vicinity of the folklift truck and thus false 5 alarms will not generated if the folk-lift truck is operating in a confined area. 3 It is envisaged that the devices 11 could be issued to employees following the successful completion of an induction or safety course provided by their employers. -
10 In an alternative embodiment, the devices 11 could comprise a transmitter which transmits a signal once a signal has been received from the transmitter 13 of the folk-lift truck lo.
A system in accordance with this invention is simple 15 and inexpensive, since it uses existing technologies of the type used in library and shop theft detection systems.

Claims (1)

  1. ( Claims
    1. A detection system for a vehicle comprising a unit for mounting to the vehicle and a plurality of remote devices arranged to interact with the unit, the unit being arranged to 5 sense for the presence of said remote devices within the vicinity of the vehicle and to output a warning signal when any device is detected.
    2. A detection system as claimed in claim 1, in which said remote devices are incorporated in tags, badges or passes.
    10 3. A detection system as claimed in claims 1 or 2, in which the unit transmits a polling signal in the vicinity of the vehicle, the remote devices being arranged to transmit a signal back to the unit when the polling signal is received.
    4. A detection system as claimed in claim 3, in which the 15 polling signal induces an electrical current in the remote devices, which provides the power for the devices to operate when in the vicinity of the vehicle.
    5. A detection system as claimed in claims 1 or 2, in which the unit transmits a polling signal in the vicinity of 20 the vehicle, the remote devices being arranged to modify the polling signal transmitted by the unit, the unit being arranged to detect a modified signal.
    6. A detection system as claimed in claim 5, in which the remote devices comprise a tuned circuit which resonates in 25 response to the polling signal, the resonance being detected by the unit.
    7. A detection system as claimed in any preceding claim, in which the system is operative only when the vehicle is
    travelling in a predetermined direction.
    8. A detection system as claimed in claim 7, in which the unit is controlled by a control on the vehicle which selects the direction of travel of the vehicle.
    5 9. A detection system substantially as herein described with reference to the accompanying drawing.
    10. A vehicle incorporating a unit of a detection system, the unit being arranged to interact with a plurality of remote devices of the system, the unit being arranged to sense for the 10 presence of said remote devices within the vicinity of the vehicle and to output a warning signal when any device is detected. 11. A detection system as claimed in claim 10, in which said remote devices are incorporated in tags, badges or passes.
    15 12. A vehicle as claimed in claims 10 or 11, in which the unit transmits a polling signal in the vicinity of the vehicle, the remote devices being arranged to transmit a signal back to the unit when the polling signal is received.
    13. A vehicle as claimed in claim 12, in which the polling 20 signal induces an electrical current in the remote devices, which provides the power for the devices to operate when in the vicinity of the vehicle.
    14. A vehicle as claimed in claims 10 or 11, in which the unit transmits a polling signal in the vicinity of the vehicle, 25 the remote devices being arranged to modify the polling signal transmitted by the unit, the unit being arranged to detect a modified signal.
    ( 15. A vehicle as claimed in claim 14, in which the remote devices comprise a tuned circuit which resonates in response to the polling signal, the resonance being detected by the unit. 5 16. A vehicle as claimed in any of claims 10 to 15, in which the system is operative only when the vehicle is travailing in a predetermined direction.
    17. A vehicle as claimed in claim 16, in which the unit is controlled by a control on the vehicle which selects the 10 direction of travel of the vehicle.
    18. A vehicle substantially as herein described with reference to the accompanying drawing.
GB0217943A 2002-08-01 2002-08-01 Vehicle obstacle warning system using polling of remote transponder tags Withdrawn GB2391672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0217943A GB2391672A (en) 2002-08-01 2002-08-01 Vehicle obstacle warning system using polling of remote transponder tags

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0217943A GB2391672A (en) 2002-08-01 2002-08-01 Vehicle obstacle warning system using polling of remote transponder tags

Publications (2)

Publication Number Publication Date
GB0217943D0 GB0217943D0 (en) 2002-09-11
GB2391672A true GB2391672A (en) 2004-02-11

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GB0217943A Withdrawn GB2391672A (en) 2002-08-01 2002-08-01 Vehicle obstacle warning system using polling of remote transponder tags

Country Status (1)

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GB (1) GB2391672A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084330A1 (en) * 2005-02-11 2006-08-17 Keyless Lifestyles Pty Ltd A personal access arrangement for a vehicle
DE102009030953A1 (en) 2009-06-29 2010-12-30 Still Gmbh System for warning dangers during operation of e.g. fork-lift truck, has portable radio frequency identification sending- and receiving- device releasing warning signal when warning device is provided in danger area of mobile machine
GB2473860A (en) * 2009-09-25 2011-03-30 Michael William Anthony Cartwright Accident mitigation system
BE1018815A4 (en) * 2009-07-07 2011-09-06 Vankerkom Pierre SENSORS-TRANSPONDER SAFE TRAFFIC.
GB2479386A (en) * 2010-04-08 2011-10-12 Ken Doran System for alerting a vehicle operator to the presence of a close-range obstacle
CN103508388A (en) * 2013-09-17 2014-01-15 南通博士未来信息科技有限公司 All-directional voice alarm device used for safe operation of in-plant forklift
GB2544378A (en) * 2015-09-24 2017-05-17 Innovative Safety Systems Ltd Reversing safety system
GB2550108A (en) * 2016-04-14 2017-11-15 Paul Mccormack T/A Pactac Radio locator system
DE102017125843A1 (en) * 2017-11-06 2019-05-09 Jungheinrich Aktiengesellschaft Method for collision protection of an operator with an industrial truck and collision protection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112408286B (en) * 2020-11-17 2022-03-01 苏州易信安工业技术有限公司 Anti-collision processing method, device and system based on user identity

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387916A (en) * 1992-07-31 1995-02-07 Westinghouse Electric Corporation Automotive navigation system and method
GB2342251A (en) * 1998-09-29 2000-04-05 Secr Defence Proximity measuring apparatus
WO2000079502A1 (en) * 1999-06-23 2000-12-28 Commonwealth Scientific And Industrial Research Organisation A collision avoidance system
DE10012195A1 (en) * 2000-03-13 2001-10-31 Werner Schloesser Contactless detection system e.g. for detecting two-wheeled vehicles at side of lorry has controller which activates signaling device if vehicle is detected
DE10041714A1 (en) * 2000-08-25 2002-05-16 Volkswagen Ag Road safety arrangement for preventing collisions between vehicles or accidents involving pedestrians, etc. by use of transceiver devices carried by persons or vehicles that transmit and receive identification signals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387916A (en) * 1992-07-31 1995-02-07 Westinghouse Electric Corporation Automotive navigation system and method
GB2342251A (en) * 1998-09-29 2000-04-05 Secr Defence Proximity measuring apparatus
WO2000079502A1 (en) * 1999-06-23 2000-12-28 Commonwealth Scientific And Industrial Research Organisation A collision avoidance system
DE10012195A1 (en) * 2000-03-13 2001-10-31 Werner Schloesser Contactless detection system e.g. for detecting two-wheeled vehicles at side of lorry has controller which activates signaling device if vehicle is detected
DE10041714A1 (en) * 2000-08-25 2002-05-16 Volkswagen Ag Road safety arrangement for preventing collisions between vehicles or accidents involving pedestrians, etc. by use of transceiver devices carried by persons or vehicles that transmit and receive identification signals

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084330A1 (en) * 2005-02-11 2006-08-17 Keyless Lifestyles Pty Ltd A personal access arrangement for a vehicle
DE102009030953A1 (en) 2009-06-29 2010-12-30 Still Gmbh System for warning dangers during operation of e.g. fork-lift truck, has portable radio frequency identification sending- and receiving- device releasing warning signal when warning device is provided in danger area of mobile machine
BE1018815A4 (en) * 2009-07-07 2011-09-06 Vankerkom Pierre SENSORS-TRANSPONDER SAFE TRAFFIC.
GB2473860A (en) * 2009-09-25 2011-03-30 Michael William Anthony Cartwright Accident mitigation system
GB2479386A (en) * 2010-04-08 2011-10-12 Ken Doran System for alerting a vehicle operator to the presence of a close-range obstacle
CN103508388A (en) * 2013-09-17 2014-01-15 南通博士未来信息科技有限公司 All-directional voice alarm device used for safe operation of in-plant forklift
GB2544378A (en) * 2015-09-24 2017-05-17 Innovative Safety Systems Ltd Reversing safety system
GB2544378B (en) * 2015-09-24 2018-03-21 Innovative Safety Systems Ltd Reversing safety system
GB2550108A (en) * 2016-04-14 2017-11-15 Paul Mccormack T/A Pactac Radio locator system
GB2550108B (en) * 2016-04-14 2019-11-06 Paul Mccormack T/A Pactac Radio locator system
DE102017125843A1 (en) * 2017-11-06 2019-05-09 Jungheinrich Aktiengesellschaft Method for collision protection of an operator with an industrial truck and collision protection system

Also Published As

Publication number Publication date
GB0217943D0 (en) 2002-09-11

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