SENSOR FOR TAUT WIRE FENCES

• US 20130247661A1
• Filed: 05/20/2013
• Published: 09/26/2013
• Est. Priority Date: 08/19/2010
• Status: Active Grant

• Current Assignee: Magal Security Systems Ltd.
• Original Assignee: Magal Security Systems Ltd.
• Inventors: Ben-Hamozeg, Yehonatan, Saar, Avraham, Shaham, Avi
• Granted Patent: US 9,135,795 B2
• Time in Patent Office: Days
• US Class Current: 73/493
• CPC Class Codes: E04H 17/127 Stretcher-type wire fencing; Tensioning devices for wire fencing
• CPC Class Codes: G08B 13/02 Mechanical actuation
• CPC Class Codes: G08B 13/122 for a perimeter fence features peculiar to electrified fences A01K3/00

Abstract

A sensor for an intrusion detection fence of a taut wires type and a method implemented in its operation, wherein the sensor is a multi-axes accelerometer that is installed on the sensors'"'"' pole of the fence while inclined relative to the fence taut wire unto which it is connected, and the sensor is connected to fence taut wire via a movement converting means such that from an instant of loading the taut wire as happens when an intrusion attempt through it occurs, the movement converting means converts the movement of the taut wire unto a rotational movement of the sensor that is amenable to be sensed in at least two axes.

Claims

1. An intrusion detection fence of a taut wires type that comprises—

a couple of anchoring poles that are positioned at a distance one from another; and

—

wires that are stretched taut between said two anchoring poles; and

—

at least one sensors'"'"' pole that is located between said anchoring poles; and

—

at least one sensor that is installed on said sensors'"'"' pole and that is linked with at least one of said taut wires for sensing phenomena that accompanies an attempted intrusion through said fence; and

—

wherein said intrusion detection fence is characterized by that—

said sensor is a multi-axes accelerometer that is installed on said sensors'"'"' pole and connected to said taut wire via a movement converting means such that from an instant of loading said taut wire as happens when an intrusion attempt through it occurs, converts a movement of said taut wire unto a movement of said sensor that is amenable to be sensed by at least two of its axes.

2. The intrusion detection fence in accordance with claim 1,

wherein said intrusion detection fence is characterized by that—

said sensor is a tri-axes accelerometer that is installed on said sensors'"'"' pole wherein it is inclined relative to said taut wire unto which it is connected; and

—

wherein said movement converting means converts a movement of said taut wire unto a rotational movement of said sensor that is amenable to be sensed in all of its three axes.

3. The intrusion detection fence in accordance with claim 2, wherein said sensor is inclined in a spatial position relative to said taut wire unto which it is connected, and this in each and every one of its three axes.

4. The intrusion detection fence in accordance with claim 2, wherein said movement converting means comprises—

a component that is formed as a twisting stripe with two ends and with a central segment; and

—

connecting means for connecting said twisting stripe component to said taut wire; and

—

anchoring means for anchoring said sensor on said second end of said twisting stripe component; and

—

a springy axis means whose one end is installed on said central segment of said twisting stripe, and its other end is linked to said sensors'"'"' pole; and

—

wherein said rotational movement of said sensor, as it occurs from an instant of movement of said taut wire, is taking place around said springy axis means.

5. The intrusion detection fence in accordance with claim 4, wherein said springy axis means comprises—

an elastomeric component that instills springy action to said means, from said instant of movement of said taut wire.

10. The intrusion detection fence in accordance with claim 1, wherein—

said intrusion detection fence is characterized by that—

that said multi-axes accelerometer that is installed on said sensors'"'"' pole substantially parallel to said taut wire unto which it is connected and at a distance from it; and

wherein said movement converting means converts a movement of said taut wire unto a movement of said sensor that is amenable to be sensed in at least two of its three axes.

11. The intrusion detection fence in accordance with claim 10, wherein said movement converting means comprises—

spiral spring component formed with one end that is suited to connecting with said sensors'"'"' pole, and with second end that is protruding and is orthogonal in its direction to the length-wise axis of said spring, and with an intermediate transition region from the direction of said length-wise axis to said second end; and

linking means for linking said spiral spring in the cited intermediate transition region to said taut wire; and

means for anchoring said sensor to said end of the spiral spring; and

—

wherein said movement of said sensor, as it occurs from an instant of movement of said taut wire, is taking place around said spiral spring while said spiral spring instills springy action to said movement of said taut wire.

6. A sensing assembly with a tri-axes accelerometer type sensor, to be used as a sensor in an intrusion detection fence of the taut wires type that comprises—

base means for installing said assembly on a sensor'"'"'s pole of said fence in a manner so that said tri-axes accelerometer would be installed wherein it is inclined relative to the taut wire to which it is allocated; and

—

movement converting means that from an instant that said taut wire is loaded as it happens on occurrence of an intrusion attempt through it, will convert the movement of said wire unto a rotational movement of the tri-axes accelerometer that is amenable to be sensed in all its three axes.

7. The sensing assembly with a tri-axes accelerometer type sensor in accordance with claim 6, wherein said tri-axes accelerometer is installed in a spatial position wherein it is inclined relative to said taut wire unto which it is allocated in all of its three axes.

8. The sensing assembly with a tri-axes accelerometer type sensor in accordance with claim 6, wherein said movement converting means comprises—

a component that is formed as a twisting stripe with two ends and with a central segment; and

—

connecting means for connecting said twisting stripe component to said taut wire; and

—

anchoring means for anchoring said sensor on said second end of said twisting stripe component; and

—

a springy axis means whose one end is installed on said central segment of said twisting stripe, and its other end is linked to said sensors'"'"' pole; and

—

wherein said rotational movement of said sensor, as it occurs from an instant of movement of said taut wire, is taking place around said springy axis means.

9. The sensing assembly with a tri-axes accelerometer type sensor in accordance with claim 8, wherein said springy axis means comprises—

an elastomeric component that instills springy action to said means, from the instant of movement of said taut wire.

12. A sensing assembly with a multi-axes accelerometer type sensor, to be used as a sensor in an intrusion detection fence of the taut wires type that comprises—

base means for installing said assembly on a sensor'"'"'s pole of said fence; and

—

movement converting means that from an instant said taut wire is loaded as it happens on occurrence of an intrusion attempt through it, will convert the movement of said wire unto a movement of said multi-axes accelerometer that is amenable to be sensed in at least two of its axes.

13. The sensing assembly with a tri-axes accelerometer type sensor in accordance with claim 12 wherein said multi-axes accelerometer is installed in a position wherein it is substantially parallel relative to said taut wire unto which it is allocated in one of its axes and at a distance from it.

14. The sensing assembly with a tri-axes accelerometer type sensor in accordance with claim 12, wherein said movement converting means comprises—

spiral spring component formed with one end that is suited to connecting with said sensors'"'"' pole, wherein its second end is protruding and is orthogonal in its direction to the length-wise axis of said spring, and with an intermediate transition region from the direction of said length-wise axis to said second end; and

linking means for linking said spiral spring in the cited transition region to said taut wire; and

means for anchoring said sensor to said end of said spiral spring; and

wherein said movement of said sensor, as it occurs from an instant of movement of said taut wire, is taking place around said spiral spring while said spiral spring instills springy action to said movement of said taut wire.

15. A method for sensing intrusion attempts through a taut wires type of intrusion detection fence that comprises the steps of—

connecting a multi-axes accelerometer to a taut wire of a taut wires intrusion detection fence; and

—

converting movement of said taut wire as it occurs when an intrusion attempt is taking place through it unto a movement of said multi-axes accelerometer type sensor that is amenable to be sensed in its axes.

16. The method for sensing attempts of intrusion through a taut wires type of intrusion detection fence in accordance with claim 15, wherein the method comprises an additional step of—

positioning said multi-axes accelerometer wherein it'"'"'s inclined relative to said taut wire unto which it is connected.