WO1993011513A1 - Detection system - Google Patents

Detection system Download PDF

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Publication number
WO1993011513A1
WO1993011513A1 PCT/GB1992/002218 GB9202218W WO9311513A1 WO 1993011513 A1 WO1993011513 A1 WO 1993011513A1 GB 9202218 W GB9202218 W GB 9202218W WO 9311513 A1 WO9311513 A1 WO 9311513A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibre
sheet
detection system
protected
detector
Prior art date
Application number
PCT/GB1992/002218
Other languages
French (fr)
Inventor
Graham Darrel Walker
Original Assignee
Graham Darrel Walker
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 Graham Darrel Walker filed Critical Graham Darrel Walker
Publication of WO1993011513A1 publication Critical patent/WO1993011513A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room

Definitions

  • the present invention relates to a detection system suitable especially for the detection of unauthorised entry into a space at least partially enclosed by a substantially continuous protective sheet.
  • a sheet (which may be rigid or flexible) surrounds, at least partially, a space into which it is desired to prevent unauthorised entry.
  • Some typical instances in the vehicular field include curtain-sided lorries, soft-topped cars, caravans, roof-rack and trailer coverings etc.
  • Other examples outside this field include suitcases, briefcases, conservatories, marquees etc.
  • each of these devices has disadvantages: infra ⁇ red radiation can be masked by the contents of the space, unpredictable movements can activate or interfere with ultra ⁇ sonic detector devices and any metal content of a load can mask microwaves. Microwave detectors can also be triggered by spurious emissions from the surrounding environment. Not one of these devices can be satisfactorily used in the wide range of applications referred to above.
  • optical fibres for security purposes. Examples of the use of optical fibres in this field include published patent application no GB 2 186 683 (Pilkington Brothers Pic) in which two spaced optical fibres are buried in the ground to detect intruders from the deformation their weight will cause to at least one of the fibres.
  • Published European patent application no EP 0 049 979 describes a mesh ⁇ like intruder detection structure for use as a security fence in which deformation or breakage of the fibres is used to detect unauthorised entry. However, these applications do not assist in providing an alarm system for a substantially- continuous protective sheet material such as a vehicle curtain. It is also known to use current carrying wire in security fence applications to detect unauthorised entry. However, such wires can work harden and break, or can be short circuited to circumvent detection.
  • a detection system comprising a substantially continuous protective sheet for enclosing at least partially a space to be protected to which sheet is attached an optical fibre, the fibre having a light emitter at one end and a detector at the other end and means for detecting an interruption of the passage of light along the fibre.
  • the sheet may be flexible, such as a tarpaulin or vinyl type material, or rigid, such as a rigid glass fibre conservatory roof.
  • the “space” may be empty, or wholly or partially filled.
  • light means electromagnetic radiation in general, including visible and invisible (to the unaided eye) wavelengths.
  • the or each fibre may be attached to the sheet by being adhered to it (eg by adhesive tape or direct bonding), by being embedded in it (usually at the manufacturing stage), by being inserted into a pocket which is itself affixed to the sheet or by any other suitable means.
  • optical fibres eliminates the problems mentioned above that occur with wires. In particular it is noted that it is very much more difficult to "short-circuit" an optical fibre than an electrical wire.
  • the or each fibre attached to the sheet could be straight and arranged generally in parallel, or there could be an array of preferably U-configured fibres in parallel, or, if the corresponding fibre is not too long as a result, it could be arranged in a serpentine fashion so as to cover the surface of the sheet.
  • the fibre or fibres could be arranged to cross over itself or each other, so as to prevent cutting of the sheet in both orthogonal directions.
  • no two fibres, or adjacent parallel sections of the same fibres should be further than a predetermined distance apart. This predetermined distance will depend on the size of the containers, pallets or volume to be protected but will generally be in the region of 10-lOOcm. For applications where it is desired to prevent entry of a person into a space to be protected, it is considered that the predetermined distance should be about 30cm.
  • the sheet material could be formed in the shape of a bag, offering a secure form of containment for the contents.
  • the polymer optical fibre preferably has a minimum radius of curvature of 2cm. Further protection can be provided for the or each fibre in the form of an intermediate polymer sheath.
  • the sheath is braided so as further to reduce friction.
  • an adapter for connecting it on the one hand to a light source and at the other to a detector.
  • the light source would normally be a laser diode.
  • break detector circuitry as is conventional in alarms, so that a break in the passage of light through the fibre will trigger the alarm.
  • Figure 1 shows a sheet in accordance with the invention
  • Figure 2 shows an opto-electronic circuit used in conjunction with the sheet shown in Figure 1
  • Figure 3 shows a close-up of a fibre-and-pocket arrangement in the sheet illustrated in Figure 1
  • Figure 4 shows a second embodiment of the invention.
  • Figures 5-8 show various applications of the present invention. Description of the Preferred Embodiments
  • Figure 1 shows a detection system comprising a substantially continuous protective sheet 1 for enclosing at least partially a space to be protected to which sheet is attached an optical fibre 3, the fibre having a light emitter 5 at one end and a detector 6 at the other end and means 4 for detecting an interruption of the pa'ssage of light along the fibre 3.
  • the sheet 1 may be of a conventional material, such as plastics-coated canvas.
  • an elongate pocket 2 typically a few centimetres wide, arranged in a serpentine fashion so that no point on the sheet is more than, say, 30cm from the nearest part of the pocket.
  • the pocket contains an optical fibre 3 extending the full length of the pocket and protruding at both ends into corresponding adaptors (not shown).
  • the optical fibre is an ESKAEXTRA (trade mark) EH-4001 single core cable available from Fibre-Data Limited of Unit 8 Pool Industrial Estate, Druids Road, Redruth, Cornwall, TR15 3RM, United Kingdom.
  • the circuit 4 to which the fibre 3 is coupled comprises a light emitter 5 attached to one end of the fibre 3, a light detector 6 attached to the other end of fibre 3, and circuitry 4 to compare the input and output signals.
  • the emitter 5 and detector 6 are chosen to match the particular optical fibre 3 from known components, in this case available from Fibre-Data Limited (see above).
  • the emitter 5 is a high radiance, high speed LED sender unit.
  • the detector 6 is a Schmitt receiver unit with a direct TTL output.
  • the other components shown are: 7 - 150 Ohm resistor
  • the circuit 4 is powered by rails: positive (12v) 17 and negative (Ov) 18. Also shown are alarm rails 19 and 20.
  • the output from light detector 6 drives the transistors 13 and 15; these in turn switch the transistors 14 and 16, allowing the choice of either a positive or a negative trigger output for a separate alarm circuit.
  • the circuit 4 provides a constant supply to the emitter 5 through a current limiting resistor 10, the light is conducted by fibre 3 to the detector 6.
  • the detector 6, when operating with normal light reception, provides an output to transistors 13 and 15 holding both in the saturated state (full on).
  • Transistor 13 deprives transistor 14 of the required base current due to the voltage drop across resistor 8, holding it below cut off (full off).
  • Transistor 15 repeats this operation with transistor 16 using resistor 9. Under these conditions, the rail 20 is held at the detector (external alarm detector) potential, and the rail 19 is held at 0 Volts.
  • transistors 13 and 15 are deprived of their base current going to cut off. This in turn allows a rise in voltage at the collectors of both transistors 13 and 15 allowing transistors 14 and 16 to achieve saturation states. This allows rail 20 to latch to the 0 Volt rail 18 giving a negative trigger to any device connected to rail 20. Simultaneously transistor 16 reaches saturation state and connects rail 19 to the positive rail (12 Volts). This trigger can be given to any device connected to the circuit 4, in this case alarm 21. It is normal to use only one type of trigger for any one installation, either a positive or a negative.
  • the full system therefore includes the sheet 1 with the fibre or fibres 3, one or more light emitters 5 and corresponding light detector(s) 6 and circuitry 4 for triggering the alarm 21 when the light path is interrupted.
  • the fibre 3 is loose inside the pocket 2, that is to say, when the sheet deforms in the wind or as a result of handling the fibre is not subjected to any stress because it takes up the deformation by sliding in the pocket. A certain amount of slack at each end can be provided to this effect.
  • the circuitry 4 can be bonded to the sheet or, as each installation requires, can be bonded to an adjoining surface to prevent removal of the sheet; with sufficient slack to allow for normal movement.
  • an intermediate sheath is provided for additional protection of the fibre.
  • This sheath fits loosely around the fibre and is itself loose inside the pocket, thus allowing a double sliding action and further reducing the risk of the fibre breaking.
  • the sheath is made of a low-friction material such as a plastics material; to reduce the friction further the material may be braided. Harness sheathing, otherwise used for bundling wires, has been found suitable.
  • Figure 3 shows a close-up of the fibre 3 in the pocket 2.
  • the pocket 2 is a strip attached to the surface of the sheet 1, for instance by welding as shown schematically by the wavy line 22. It would also be possible to use suitable adhesives.
  • the material of the strip may be advantageously be the same as that of the sheet.
  • the pocket 2 could be embedded in the sheet 1, giving additional protection for the fibre 3.
  • the version shown in Fig 2 could also be used when adapting (retro-fitting) existing sheets or tarpaulins for the alarm system of the invention.
  • FIG. 4 shows a sheet 1 to which is adhered by a bonding glue/adhesive or bonding tape 23 a fibre optic cable 3.
  • This embodiment operates in substantially the same manner to that described above for the first embodiment.
  • the radius of curvature of the fibre 3 as it loops around is no less than 2cm.
  • Applications for the present invention are illustrated in Figures 5-8.
  • Figure 5 shows the present invention used to protect a curtain sided vehicle (the fibre 3 is shown by the dashed lines in this and the remaining Figures).
  • Figures 6-8 show the present invention used to protect a vinyl topped vehicle, a suitcase (in which case, the circuit 4 needs to be modified to run from a domestic battery) and the contents of a roofrack respectively.

Abstract

The present invention addresses the problem of the detection of unwanted entry into a space to be protected which is enclosed, at least partially, by a substantially continuous sheet. The invention provides a detection system comprising a substantially continuous protective sheet (1) for enclosing at least partially a space to be protected to which sheet is attached an optical fibre (3), the fibre has a light emitter (5) at one end and a detector (6) at the other end and means (4) for detecting an interruption of the passage of light along the fibre. The system finds particular applicability when used to protect curtain sided vehicles, soft-topped cars, caravans, roof racks, trailer coverings, suitcases, briefcases, conservatories, marquees, etc.

Description

DETECTION SYSTEM
Field of the Invention
The present invention relates to a detection system suitable especially for the detection of unauthorised entry into a space at least partially enclosed by a substantially continuous protective sheet.
Background to the Invention
In many instances a sheet (which may be rigid or flexible) surrounds, at least partially, a space into which it is desired to prevent unauthorised entry. Some typical instances in the vehicular field include curtain-sided lorries, soft-topped cars, caravans, roof-rack and trailer coverings etc. Other examples outside this field include suitcases, briefcases, conservatories, marquees etc.
Various preventative and deterrent devices have been developed in attempts to overcome the problem of unauthorised entry in these examples. For example, passive infra-red detectors, ultra-sonic detectors, microwave detectors etc
However, each of these devices has disadvantages: infra¬ red radiation can be masked by the contents of the space, unpredictable movements can activate or interfere with ultra¬ sonic detector devices and any metal content of a load can mask microwaves. Microwave detectors can also be triggered by spurious emissions from the surrounding environment. Not one of these devices can be satisfactorily used in the wide range of applications referred to above.
It is known to use optical fibres for security purposes. Examples of the use of optical fibres in this field include published patent application no GB 2 186 683 (Pilkington Brothers Pic) in which two spaced optical fibres are buried in the ground to detect intruders from the deformation their weight will cause to at least one of the fibres. Published European patent application no EP 0 049 979 describes a mesh¬ like intruder detection structure for use as a security fence in which deformation or breakage of the fibres is used to detect unauthorised entry. However, these applications do not assist in providing an alarm system for a substantially- continuous protective sheet material such as a vehicle curtain. It is also known to use current carrying wire in security fence applications to detect unauthorised entry. However, such wires can work harden and break, or can be short circuited to circumvent detection.
Summary of the Invention
According to the invention there is provided a detection system comprising a substantially continuous protective sheet for enclosing at least partially a space to be protected to which sheet is attached an optical fibre, the fibre having a light emitter at one end and a detector at the other end and means for detecting an interruption of the passage of light along the fibre.
The sheet may be flexible, such as a tarpaulin or vinyl type material, or rigid, such as a rigid glass fibre conservatory roof.
The "space" may be empty, or wholly or partially filled. In this specification "light" means electromagnetic radiation in general, including visible and invisible (to the unaided eye) wavelengths.
The or each fibre may be attached to the sheet by being adhered to it (eg by adhesive tape or direct bonding), by being embedded in it (usually at the manufacturing stage), by being inserted into a pocket which is itself affixed to the sheet or by any other suitable means.
The use of optical fibres eliminates the problems mentioned above that occur with wires. In particular it is noted that it is very much more difficult to "short-circuit" an optical fibre than an electrical wire.
The or each fibre attached to the sheet could be straight and arranged generally in parallel, or there could be an array of preferably U-configured fibres in parallel, or, if the corresponding fibre is not too long as a result, it could be arranged in a serpentine fashion so as to cover the surface of the sheet. Conceivably the fibre or fibres could be arranged to cross over itself or each other, so as to prevent cutting of the sheet in both orthogonal directions. Preferably no two fibres, or adjacent parallel sections of the same fibres, should be further than a predetermined distance apart. This predetermined distance will depend on the size of the containers, pallets or volume to be protected but will generally be in the region of 10-lOOcm. For applications where it is desired to prevent entry of a person into a space to be protected, it is considered that the predetermined distance should be about 30cm.
In a different application the sheet material could be formed in the shape of a bag, offering a secure form of containment for the contents.
Although glass fibres could be used for applications not demanding much flexibility it is of particular advantage to use optical fibres made of polymer material because of their additional flexibility. The polymer optical fibre preferably has a minimum radius of curvature of 2cm. Further protection can be provided for the or each fibre in the form of an intermediate polymer sheath.
Advantageously the sheath is braided so as further to reduce friction. At the ends of the or each fibre will be an adapter for connecting it on the one hand to a light source and at the other to a detector. The light source would normally be a laser diode. There will further be provided break detector circuitry as is conventional in alarms, so that a break in the passage of light through the fibre will trigger the alarm.
For a better understanding of the invention, an embodiment will now be described, by way of example, with reference to the accompanying drawings; in which:- Brief Description of the Drawings
Figure 1 shows a sheet in accordance with the invention, Figure 2 shows an opto-electronic circuit used in conjunction with the sheet shown in Figure 1, Figure 3 shows a close-up of a fibre-and-pocket arrangement in the sheet illustrated in Figure 1, and
Figure 4 shows a second embodiment of the invention. Figures 5-8 show various applications of the present invention. Description of the Preferred Embodiments
Figure 1 shows a detection system comprising a substantially continuous protective sheet 1 for enclosing at least partially a space to be protected to which sheet is attached an optical fibre 3, the fibre having a light emitter 5 at one end and a detector 6 at the other end and means 4 for detecting an interruption of the pa'ssage of light along the fibre 3.
The sheet 1 may be of a conventional material, such as plastics-coated canvas. On the surface of the sheet is arranged an elongate pocket 2 typically a few centimetres wide, arranged in a serpentine fashion so that no point on the sheet is more than, say, 30cm from the nearest part of the pocket. The pocket contains an optical fibre 3 extending the full length of the pocket and protruding at both ends into corresponding adaptors (not shown). In this case the optical fibre is an ESKAEXTRA (trade mark) EH-4001 single core cable available from Fibre-Data Limited of Unit 8 Pool Industrial Estate, Druids Road, Redruth, Cornwall, TR15 3RM, United Kingdom. The two ends of the pockets in the embodiment shown emerge on the same edge of the sheet, which makes fitting of emitter alarm circuitry more convenient. As shown in Figure 2 the circuit 4 to which the fibre 3 is coupled comprises a light emitter 5 attached to one end of the fibre 3, a light detector 6 attached to the other end of fibre 3, and circuitry 4 to compare the input and output signals. The emitter 5 and detector 6 are chosen to match the particular optical fibre 3 from known components, in this case available from Fibre-Data Limited (see above). The emitter 5 is a high radiance, high speed LED sender unit. The detector 6 is a Schmitt receiver unit with a direct TTL output. In the circuit 4 the other components shown are: 7 - 150 Ohm resistor
8 & 9 - 7400 Ohm resistor
10 - 590 Ohm resistor
11 & 12 - 20 Ohm resistor 13 & 14 - BC108 transistor 15 & 16 - BC639 transistor
The circuit 4 is powered by rails: positive (12v) 17 and negative (Ov) 18. Also shown are alarm rails 19 and 20.
The output from light detector 6 drives the transistors 13 and 15; these in turn switch the transistors 14 and 16, allowing the choice of either a positive or a negative trigger output for a separate alarm circuit.
The circuit 4 provides a constant supply to the emitter 5 through a current limiting resistor 10, the light is conducted by fibre 3 to the detector 6. The detector 6, when operating with normal light reception, provides an output to transistors 13 and 15 holding both in the saturated state (full on). Transistor 13 deprives transistor 14 of the required base current due to the voltage drop across resistor 8, holding it below cut off (full off). Transistor 15 repeats this operation with transistor 16 using resistor 9. Under these conditions, the rail 20 is held at the detector (external alarm detector) potential, and the rail 19 is held at 0 Volts.
When the output from detector 6 fails due to the loss of light caused by fibre 3 being cut, then transistors 13 and 15 are deprived of their base current going to cut off. This in turn allows a rise in voltage at the collectors of both transistors 13 and 15 allowing transistors 14 and 16 to achieve saturation states. This allows rail 20 to latch to the 0 Volt rail 18 giving a negative trigger to any device connected to rail 20. Simultaneously transistor 16 reaches saturation state and connects rail 19 to the positive rail (12 Volts). This trigger can be given to any device connected to the circuit 4, in this case alarm 21. It is normal to use only one type of trigger for any one installation, either a positive or a negative.
The full system therefore includes the sheet 1 with the fibre or fibres 3, one or more light emitters 5 and corresponding light detector(s) 6 and circuitry 4 for triggering the alarm 21 when the light path is interrupted.
The fibre 3 is loose inside the pocket 2, that is to say, when the sheet deforms in the wind or as a result of handling the fibre is not subjected to any stress because it takes up the deformation by sliding in the pocket. A certain amount of slack at each end can be provided to this effect. The circuitry 4 can be bonded to the sheet or, as each installation requires, can be bonded to an adjoining surface to prevent removal of the sheet; with sufficient slack to allow for normal movement.
In preferred embodiments an intermediate sheath is provided for additional protection of the fibre. This sheath fits loosely around the fibre and is itself loose inside the pocket, thus allowing a double sliding action and further reducing the risk of the fibre breaking.
Preferably the sheath is made of a low-friction material such as a plastics material; to reduce the friction further the material may be braided. Harness sheathing, otherwise used for bundling wires, has been found suitable. Figure 3 shows a close-up of the fibre 3 in the pocket 2. As can be seen, in its simplest form the pocket 2 is a strip attached to the surface of the sheet 1, for instance by welding as shown schematically by the wavy line 22. It would also be possible to use suitable adhesives. The material of the strip may be advantageously be the same as that of the sheet.
In an alternative form the pocket 2 could be embedded in the sheet 1, giving additional protection for the fibre 3. Clearly this would have to be done during manufacture of the sheet, whereas the version shown in Fig 2 could also be used when adapting (retro-fitting) existing sheets or tarpaulins for the alarm system of the invention.
The embodiment of the invention illustrated in Figure 4 shows a sheet 1 to which is adhered by a bonding glue/adhesive or bonding tape 23 a fibre optic cable 3. This embodiment operates in substantially the same manner to that described above for the first embodiment. The radius of curvature of the fibre 3 as it loops around is no less than 2cm. Applications for the present invention are illustrated in Figures 5-8. Figure 5 shows the present invention used to protect a curtain sided vehicle (the fibre 3 is shown by the dashed lines in this and the remaining Figures). Figures 6-8 show the present invention used to protect a vinyl topped vehicle, a suitcase (in which case, the circuit 4 needs to be modified to run from a domestic battery) and the contents of a roofrack respectively.

Claims

1. A detection system comprising a substantially continuous protective sheet for enclosing at least partially a space to be protected to which sheet is attached an optical fibre, the fibre having a light emitter at one end and a detector at the other end and means for detecting an interruption of the passage of light along the fibre.
2. A detection system according to Claim 1 in which the sheet comprises a flexible material.
3. A detection system according to Claim 1 or Claim 2 in which the or each fibre is adhered to the sheet, embedded in the sheet or inserted into a pocket which is itself affixed to the sheet.
4. A detection system according to any preceding Claim in which the or each fibre attached to the sheet is straight and arranged generally in parallel, or in which there are a plurarity of U-configured fibres in parallel, or in which the or each fibre is arranged in a serpentine fashion so as to cover the surface of the sheet.
5. A detection system according to any preceding Claim in which the or each fibre is arranged to cross over itself or each other.
6. A detection system according to any preceding Claim in which no two fibres, or adjacent parallel sections of the same fibre, are or is less than about 10cm or more than about 100cm apart.
7. A detection system according to any preceding Claim in which the or each fibre is made of a polymer material.
8. A detection system according to Claim 7 in which the polymer optical fibre has a minimum radius of curvature of 2cm.
9. A detection system according any preceding Claim in which the or each fibre is protected by an intermediate polymer sheath.
10. A detection system according to Claim 9 in which the sheath is braided.
PCT/GB1992/002218 1991-11-29 1992-11-30 Detection system WO1993011513A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919125447A GB9125447D0 (en) 1991-11-29 1991-11-29 Alarm system
GB9125447.4 1991-11-29

Publications (1)

Publication Number Publication Date
WO1993011513A1 true WO1993011513A1 (en) 1993-06-10

Family

ID=10705464

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/002218 WO1993011513A1 (en) 1991-11-29 1992-11-30 Detection system

Country Status (3)

Country Link
AU (1) AU2953392A (en)
GB (1) GB9125447D0 (en)
WO (1) WO1993011513A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025597A1 (en) * 2002-09-09 2004-03-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Composite security system, method for the production and use thereof
GB2404069A (en) * 2003-07-17 2005-01-19 Nissan Technical Ct Europ Ltd Obstacle detector in a storage compartment for a retractable folding vehicle roof
WO2005069794A2 (en) 2004-01-09 2005-08-04 Beinhocker Gilbert D Tamper-proof container
US7098444B2 (en) * 2004-01-09 2006-08-29 Beinhocker Gilbert D Tamper proof container
US7332728B2 (en) * 2004-11-05 2008-02-19 Tamperproof Container Licensing Corp. Tamper-proof container
US7394060B2 (en) 2004-05-03 2008-07-01 Tamperproof Container Licensing Corp. Tamper detection system having plurality of inflatable liner panels with optical couplers
US7482924B1 (en) 2004-11-05 2009-01-27 Tamper Proof Container Licensing Corp. Cargo container security system communications
WO2009080317A1 (en) * 2007-12-21 2009-07-02 Oltre S.R.L. Anti-theft device, particularly for pallets loaded with goods
US7608812B2 (en) 2004-11-05 2009-10-27 Tamperproof Container Licensing Corp. Tamper detection system
US7619226B2 (en) 2007-03-30 2009-11-17 Tamper Proof Container Licensing Corp. Integrated optical neutron detector
US7856157B2 (en) 2007-09-11 2010-12-21 Tamperproof Container Licensing Corp. Pipeline security system
US7924166B2 (en) 2009-05-18 2011-04-12 Tamperproof Container Licensing Corp. Nuclear leakage detection system using wire or optical fiber
US8971673B2 (en) 2012-01-25 2015-03-03 3D Fuse Sarl Sensor tape for security detection and method of fabrication
US9373234B1 (en) 2015-01-20 2016-06-21 3D Fuse Technology Inc. Security tape for intrusion/extrusion boundary detection
WO2017079743A1 (en) 2015-11-08 2017-05-11 Opticallock, Inc. Security system with anti-tampering sensors and cybersecurity
WO2018149458A1 (en) * 2017-02-20 2018-08-23 Alarmplane.De Gmbh Alarm element and alarm system
CN111572335A (en) * 2020-05-25 2020-08-25 山东交通学院 Truck fuel anti-theft device and method based on transmission line breakpoint

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DE3242377A1 (en) * 1981-11-16 1983-05-26 Honda Giken Kogyo K.K., Tokyo FLEXIBLE FASTENING ELEMENT FOR ANTI-THEFT SECURITY DEVICE
CH642186A5 (en) * 1980-12-22 1984-03-30 Jacot Des Combes & Cie Sa Device for monitoring an object or a site
GB2193825A (en) * 1986-07-31 1988-02-17 Charles Moss Construction material with embedded optical fiber
DE3720349A1 (en) * 1987-06-19 1988-12-29 Waskoenig & Walter Kg Besitzge Alarm device
US4847596A (en) * 1986-10-10 1989-07-11 Ispra Israel Product Research Company Ltd. Wallpaper comprising an optical fibre

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Publication number Priority date Publication date Assignee Title
CH642186A5 (en) * 1980-12-22 1984-03-30 Jacot Des Combes & Cie Sa Device for monitoring an object or a site
DE3242377A1 (en) * 1981-11-16 1983-05-26 Honda Giken Kogyo K.K., Tokyo FLEXIBLE FASTENING ELEMENT FOR ANTI-THEFT SECURITY DEVICE
GB2193825A (en) * 1986-07-31 1988-02-17 Charles Moss Construction material with embedded optical fiber
US4847596A (en) * 1986-10-10 1989-07-11 Ispra Israel Product Research Company Ltd. Wallpaper comprising an optical fibre
DE3720349A1 (en) * 1987-06-19 1988-12-29 Waskoenig & Walter Kg Besitzge Alarm device

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025597A1 (en) * 2002-09-09 2004-03-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Composite security system, method for the production and use thereof
GB2404069A (en) * 2003-07-17 2005-01-19 Nissan Technical Ct Europ Ltd Obstacle detector in a storage compartment for a retractable folding vehicle roof
WO2005069794A2 (en) 2004-01-09 2005-08-04 Beinhocker Gilbert D Tamper-proof container
WO2005069794A3 (en) * 2004-01-09 2006-02-09 Gilbert D Beinhocker Tamper-proof container
US7098444B2 (en) * 2004-01-09 2006-08-29 Beinhocker Gilbert D Tamper proof container
US7211783B2 (en) 2004-01-09 2007-05-01 Tamperproof Container Licensing Corp. Tamper-proof container
US7394060B2 (en) 2004-05-03 2008-07-01 Tamperproof Container Licensing Corp. Tamper detection system having plurality of inflatable liner panels with optical couplers
US7608812B2 (en) 2004-11-05 2009-10-27 Tamperproof Container Licensing Corp. Tamper detection system
US7482924B1 (en) 2004-11-05 2009-01-27 Tamper Proof Container Licensing Corp. Cargo container security system communications
US7332728B2 (en) * 2004-11-05 2008-02-19 Tamperproof Container Licensing Corp. Tamper-proof container
US7619226B2 (en) 2007-03-30 2009-11-17 Tamper Proof Container Licensing Corp. Integrated optical neutron detector
US7856157B2 (en) 2007-09-11 2010-12-21 Tamperproof Container Licensing Corp. Pipeline security system
WO2009080317A1 (en) * 2007-12-21 2009-07-02 Oltre S.R.L. Anti-theft device, particularly for pallets loaded with goods
US8207861B2 (en) 2009-05-18 2012-06-26 3D Fuse Sarl Nuclear leakage detection system using wire or optical fiber
US7924166B2 (en) 2009-05-18 2011-04-12 Tamperproof Container Licensing Corp. Nuclear leakage detection system using wire or optical fiber
US8971673B2 (en) 2012-01-25 2015-03-03 3D Fuse Sarl Sensor tape for security detection and method of fabrication
US9373234B1 (en) 2015-01-20 2016-06-21 3D Fuse Technology Inc. Security tape for intrusion/extrusion boundary detection
WO2017079743A1 (en) 2015-11-08 2017-05-11 Opticallock, Inc. Security system with anti-tampering sensors and cybersecurity
EP3371395A4 (en) * 2015-11-08 2019-07-03 Opticallock, Inc. Security system with anti-tampering sensors and cybersecurity
WO2018149458A1 (en) * 2017-02-20 2018-08-23 Alarmplane.De Gmbh Alarm element and alarm system
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GB9125447D0 (en) 1992-01-29

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