JP2006079323A - Alarm device using reel type security wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alarm device that can be easily installed in a place requiring security and can surely detect intrusion. <P>SOLUTION: The alarm device has inside an alarm device body 100 a reel 121 having a sensing cable 211 provided at an end with a connector 220 that is cut away depending on an external force, the sensing cable 211 having at least two wires and extensibly wound on the reel 211; a connection detection circuit 110 that outputs a fault signal upon detecting that an electrical connection between the two wires of the sensing cable has been broken as the result of separation of the connector; a vibration sensor 123 that outputs a fault signal when exerted with either the rotation of the reel due to the movement of the sensing cable or other kinetic force; a battery box circuit 140 that outputs a fault signal when a box provided in a casing to hold batteries is opened; and an alarm means for sounding an alarm when a fault signal is provided from either the connection detection circuit, the vibration sensor, the battery box circuit or a card detection circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an alarm device that detects an intrusion of a person or the like and issues an alarm, and particularly relates to an alarm device that can be easily installed and detects that a person or the like has touched a cable and issues an alarm.

In order to prevent intrusion into offices, houses, etc., various alarm devices including non-contact type devices using infrared rays, ultrasonic waves and the like are provided. Among them, the most basic method for detecting the intrusion of a person or the like is to detect that a person or the like has contacted.

  However, even if the contact of a person or the like is detected using the warning line, it is necessary to perform a construction in which the warning line is visited in advance at a predetermined location and connected to the device, and the installation itself is not simple.

  The present invention has been made in consideration of the above-described points, and an object of the present invention is to provide an alarm device that can be easily installed at a warning location and can reliably detect an intrusion.

In order to achieve the above object, in the present invention,
A main body housed in a housing, an alarm device comprising a reel, a buzzer, and a battery that are provided on the main body and wound around a detection cable that is pulled out from the main body and has a tip locked to an object. ,
In the body,
A reel having a detection cable having at least two wires provided with a connector that is cut off according to an external force at the tip;
A continuity detecting circuit that detects that the continuity between two wires in the detection cable is cut off and the connector is disconnected and outputs an abnormal signal;
A vibration sensor that outputs an abnormal signal when rotation of the reel due to movement of the detection cable or other movement force is given;
A battery box circuit that is provided in the housing and outputs an abnormal signal when a box for storing the battery is opened;
Alarm means for issuing an alarm when an abnormal signal is given from any of the continuity detection circuit, the vibration sensor, and the battery box circuit;
Alarm device,
Is to provide.

  In the present invention, as described above, the cable wound around the reel is pulled out to be used as a warning line, and an alarm is generated based on an electrical and mechanical abnormality occurring in the cable. Therefore, the alarm device can be easily installed. Can be provided. Moreover, since it is a reel type, the length can be freely set, the degree of freedom in installation is high, and it can be installed immediately when necessary.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

[Example 1]
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention. This schematic configuration will be described.

  In FIG. 1, reference numeral 100 denotes an alarm device main body. The main body 100 includes a reel 121, a protrusion 122 provided around the reel 121, a vibration sensor 123 with which the protrusion 122 comes into contact with the rotation of the reel 121, and a vibration sensor. A spring 124 supporting 123, an RFID circuit 130, a buzzer BZ and a battery B, other circuit elements (not shown), and the like are accommodated.

  The cable 211 wound around the reel 121 is provided with a connector 220 including a plug 212 and a receptacle 213 at the tip. This connector 220 is of a three-terminal type, of which two terminals are short-circuited by the receptacle 213 and the other two terminals are open even when the receptacle 213 is attached. The receptacle 213 needs to be provided with a hole for attaching an element for fixing to the object, for example, a hook or a fixture.

  The cable 211 needs to be as invisible as possible to the intruder, and is preferably thin and has an appearance that is confused with the background. In that sense, it is desirable that the cable covering is transparent, translucent, or has a specific color.

  On the other hand, the reel 121 accommodated in the alarm device main body 100 applies a pulling force to the cable 211. When the cable 211 is pulled out, the reel 121 rotates in accordance with the pulling force, and the protrusion provided around the reel 211 is a vibration sensor. Clash with 123. The vibration sensor 123 is supported by a spring 124. The vibration sensor 123 vibrates and generates an abnormal signal every time the protrusion of the reel 211 collides.

  Further, the alarm device main body 100 is provided with an RFID detection circuit 130. When the RFID card 230 comes close, a signal for canceling the alarm state is issued to deactivate the alarm device.

FIG. 2 shows the internal configuration of the alarm device shown in FIG. In this case, the content to be detected to issue an alarm is
(1) Conduction or short circuit of the cable 211 by the continuity detection circuit 110,
(2) Contact of a person or the like to the cable 211 by the vibration sensor 123, and an impact applied to the alarm device,
(3) The battery box circuit 140 is used to open the battery compartment in the housing, that is, the battery box.
On the other hand, as the one to release the alert state
(4) RFID card detection,
There is.

  The signals (1) to (3) are given to the alarm circuit 150 to actuate the buzzer BZ, and (4) acts to release them. Each of these operations will be described.

  (1) The continuity detection circuit 110 constantly monitors the continuity of the cable 211, and determines that it is normal if the two wires constituting the cable are in a connected state and abnormal when the connection is lost. The connection is lost, for example, when a person touches the cable 211 and the plug 212 and the receptacle 213 are disconnected, or when the cable 211 is disconnected.

  In addition, when there is a third line as indicated by a broken line, the third line and either the first or second line are not always connected, and when a connection state such as a short circuit is established It is abnormal. When the intruder cuts the cable 211 with, for example, a blade, the third line and another line are connected, and this is detected by the continuity detection circuit 110 as an abnormality.

  (2) The vibration sensor 123 forms an abnormal signal when there is vibration. The vibration sensor 123 detects vibration and generates an abnormal signal when the cable 211 is pulled out from the reel 121 or the connector 220 is disconnected, or when the alarm device main body 100 is shaken.

  (3) In the battery box circuit 140, when a lid of a battery box (not shown) provided in the housing is opened, the switch SW is activated to generate an abnormal signal.

  In response to the abnormal signal generated in the cases (1) to (3), the alarm circuit 150 operates the buzzer BZ to generate an alarm.

  On the other hand, in the case of (4), that is, when the RFID card 230 held by the administrator of the alarm device is brought close to the alarm device main body 100, the RFID circuit 130 detects the RFID card 230 and gives a release signal to the alarm circuit 150. As a result, the alarm is released. Therefore, even if the administrator touches the cable 211 and the vibration sensor 123 operates to send an abnormal signal to the alarm circuit 150, the alarm circuit 150 does not operate.

<Alarm set>
Since the apparatus of the present invention draws a cable from the reel, the length of the warning line can be adjusted within the range of the cable length wound around the reel. Therefore, it can be installed in any place where intrusion is expected. And if it pulls out a cable, it can be in a warning state immediately. In addition, an RFID card is required to stop the device, and an intruder cannot stop the alarm state.

<Adaptation to various intrusion modes>
Since the device according to the present invention detects contact with the detection cable, it can detect all of the entry over the veranda, entry into the passage, and entry through the window. And the intrusion of the person who destroys the circumference | surroundings of the location where the alarm device was installed is also detected as a vibration, and the detection capability with respect to various intrusion modes is high. Further, when the intruder removes the cable 211 from the alarm device main body 100, the vibration sensor 123 operates and an alarm is issued from the alarm circuit 150. The cable can also activate the alarm circuit whether it is cut or shorted.

<Modification>
In the above-described embodiment, the case of installing indoors has been described. However, the waterproof structure may be installed outdoors.

Explanatory drawing which shows schematic structure of one Example of this invention. FIG. 2 is an explanatory diagram showing an internal configuration of the embodiment shown in FIG.

Explanation of symbols

100 housing, 110 continuity detection circuit, 121 reel, 122 protrusion,
123 vibration sensor, 124 spring, 130 RFID circuit,
140 battery box circuit, 150 alarm circuit, 211 cable,
212 plug, 213 receptacle, 230 RFID card.
B battery, BZ buzzer, SW switch.

Claims (5)

A main body housed in a housing, an alarm device comprising a reel, a buzzer, and a battery that are provided on the main body and wound around a detection cable that is pulled out from the main body and has a tip locked to an object. ,
In the main body,
A reel having a detection cable having at least two wires provided with a connector that is cut off according to an external force at the tip;
A continuity detecting circuit that detects that the continuity between two wires in the detection cable is cut off and the connector is disconnected and outputs an abnormal signal;
A vibration sensor that outputs an abnormal signal when rotation of the reel due to movement of the detection cable or other movement force is given;
A battery box circuit that is provided in the housing and outputs an abnormal signal when a box for storing the battery is opened;
Alarm means for issuing an alarm when an abnormal signal is given from any of the continuity detection circuit, the vibration sensor, and the battery box circuit;
Alarm device equipped with. The alarm device according to claim 1,
A card detection circuit that outputs a release signal when a specific RFID card is in proximity,
An alarm device that does not generate an alarm output when the release signal is given. The alarm device according to claim 1,
The reel is provided with a projecting portion so as to come into contact with the vibration sensor around the reel, and a vibration is applied to the vibration sensor by the rotation of the reel. The alarm device according to claim 1,
The connector is
A first element as a terminal of the two wires;
An alarm device comprising: a fixing member for attaching to an object; and a second element having a connection member for connecting between the terminals of the first element. The alarm device according to claim 1,
The sensing cable has at least three wires;
The continuity detection circuit is an alarm device that generates an abnormal signal when any two wires in the detection cable that are normally open are short-circuited.

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