JP3209446U - Alarm device, wire theft prevention device and wire theft prevention system - Google Patents

Abstract

There is provided an alarm device that detects a disconnection of a wire and issues an alarm, and can issue an alarm with a simple structure. An alarm device includes a first power supply means 11A for supplying a first current Ia to a conducting wire, a sound generation means 12 for generating an alarm, and a second power supply means for supplying a second current Ib to the sound generation means. 11B and switch means 14 that is turned ON / OFF in response to the first current or the second current, and the first power supply means is connected to the ground via a conductor, and the conductor is disconnected. The second power supply means is connected to the switch means via the sound generation means, and the sound generation means is configured to supply current to the switch means when the first power supply means supplies current to the switch means. A current is supplied from the second power supply means to be in an energized state, and the sound generation means produces sound. [Selection] Figure 1

Description

  The present invention relates to an alarm device that detects a disconnection of a conductor and issues an alarm. The present invention also relates to an electric wire theft prevention device and an electric wire theft prevention system using an alarm device that detects an electric wire (conductor) disconnection and issues an alarm in order to prevent the electric wire theft at a construction site.

  Devices (such as sirens) that emit alarm sounds to detect anomalies related to theft and to recognize illegal activities to the surroundings and to alert thieves (including threats) are known. In Patent Document 1, at least two horns that output a horn sound, a horn switch that is turned on / off in response to the operation of the horn button, and a relay box that are disposed in response to the horn switch being turned on. Disconnection provided in a vehicle having a horn device including a plug-in relay that turns on a contact circuit and supplies driving power to the two horns, and a wire harness that electrically connects the plug-in relay and the two horns. A detection device, a constant current circuit for supplying a constant current for disconnection detection to each of the two horns via the wire harness, and an output voltage of the constant current circuit being monitored to disconnect the wire harness When the disconnection of the wire harness is detected, the contact circuit is turned on independently of the horn switch. A disconnection detection unit comprising a disconnection detection circuit for supplying drive power to the wire harness, and the disconnection detection unit is disposed in the relay box together with the plug-in relay. doing.

JP2015-134543A

  However, in the technique disclosed in Patent Document 1, the structure is complicated, and thus the cost may increase. In addition, Patent Document 1 does not include a description of a technique related to an electric wire theft prevention device that detects a disconnection of an electric wire (conductive wire) and issues an alarm in order to prevent the electric wire (conductive wire) from being stolen at a construction site.

  An object of the present invention is to provide an alarm device that detects a disconnection of a conductor and issues an alarm, and can issue an alarm with a simple structure. The present invention also provides an electric wire theft prevention device or an electric wire theft prevention system using an alarm device that detects an electric wire disconnection and issues an alarm in order to prevent the electric wire (conductor) from being stolen at a construction site. It may be intended.

  In order to solve the above-mentioned problem, one embodiment of the present invention is an alarm device that detects a disconnection of a conductor and issues an alarm, and includes a first power supply unit that supplies a first current to the conductor, Sound generation means for issuing an alarm; second power supply means for supplying a second current to the sound generation means; and switch means that is turned on / off in response to the first current or the second current. And the first power supply means is connected to the ground via the conductor, and supplies current to the switch means when the conductor is disconnected, and the second power supply means is the sounding means. The sound generation means is energized by being supplied with current from the second power supply means when the first power supply means supplies current to the switch means. The sound generation means is characterized by To provide a warning device. Another embodiment of the present invention is characterized in that the conducting wire is an electric wire at a construction site, and the sound generation means emits an alarm sound for theft prevention by sounding when the electric wire is cut. The wire antitheft device using the alarm device described above may be used. In addition, the sound generation unit further includes a communication unit that inputs / outputs information to / from the outside, and the sound generation unit generates a sound based on the information received by the communication unit. It may be a device or the above-described wire theft prevention device. Also, a plurality of the alarm devices or wire theft prevention devices are provided, the one communication unit is connected to the other communication unit so as to be able to transmit and receive each other, and the one sounding unit is received by the one communication unit It may be an electric wire theft prevention system characterized by sounding on the basis of pronunciation information from another communication unit.

  According to the alarm device, the wire theft prevention device, and the wire theft prevention system according to the present invention, the switch means that is turned on / off in response to the first current or the second current has a simple structure, and It is possible to issue an alarm by detecting disconnection of a conducting wire or an electric wire at low cost. Moreover, according to the alarm device, the wire antitheft device, and the wire antitheft system according to the present invention, when the electric wire at the construction site is cut, it can sound and emit an antitheft alarm sound.

It is explanatory drawing explaining an example of the alarm device which concerns on embodiment of this invention. It is explanatory drawing explaining an example of the electric wire antitheft device using the alarm device which concerns on embodiment of this invention.

  The present invention will be described using an example of an alarm device and an electric wire theft prevention device according to an embodiment. Note that the present invention is not limited to an alarm device or a wire theft prevention device described later, and uses a switch means that is turned on / off in response to the first current or the second current to disconnect the conductor or the wire. Any device can be used as long as it detects and issues an alarm. The alarm sound to be emitted is not particularly limited. The alarm sound may be, for example, a sound, a tone color, a buzzer, a horn, etc. for recognizing illegal activities to the surroundings and warning (including intimidation) to the thief. The alarm sound may be a voice of a person recorded in advance, for example.

  Hereinafter, the present invention will be described.

  The configuration of the alarm device according to the embodiment of the present invention will be described with reference to FIG. Here, FIG. 1 is an explanatory view illustrating an example of the alarm device 10 according to the embodiment of the present invention.

  The alarm device shown in FIG. 1 is an example, and the present invention is not limited to the alarm device shown in FIG.

  As shown in FIG. 1, the alarm device 100 according to the present invention is a device that detects an open wire 13 and issues an alarm. The alarm device 100 according to the present invention includes a first power supply unit 11A that supplies a first current Ia to the conducting wire 13, a sound generation unit 12 that emits an alarm, and a second current Ib that supplies a second current Ib to the sound generation unit 12. Power supply means 11B and switch means 14 that is turned on / off in response to the first current 11A or the second current 11B.

  The first power supply means 11A is means for supplying current to the switch means 14. The first power supply means 11A is connected to the ground GND via the conducting wire 13 and supplies a current to the switch means 14 when the conducting wire 13 is disconnected. It should be noted that a known technique can be used as a method of supplying current by the first power supply unit 11A. Moreover, as long as the conducting wire 13 is a wire member which carries an electric current, any thing can be used.

  The second power supply unit 11B is a unit that supplies a current to the sounding unit 12 and operates the sounding unit 12. The second power supply means 11B is connected to the switch means 14 via the sound generation means 12, and further connected to the ground GND. A known technique can be used as a method for supplying current by the second power supply means 11B.

  The sound generation means 12 is a means for emitting a sound or a voice as an alarm. When the first power supply unit 11A supplies current to the switch unit 14, the sound generation unit 12 is supplied with current from the second power supply unit 11B and becomes energized and emits an alarm sound. The sound generation means 12 may further include a communication unit that inputs and outputs information with the outside. Thereby, the sound production | generation means 12 can emit an alarm sound based on the information which the communication part received. Here, the alarm sound is not particularly limited. The alarm sound may be a buzzer, a horn, or a prerecorded human voice. A known technique can be used as a method for the sound generation means 12 to issue an alarm.

  The switch unit 14 is a unit that performs an ON / OFF operation in response to energization of the first current 11A or the second current 11B. The sound generation means 12 can use a transistor (for example, an NPN type). As shown in FIG. 1, the switch means 14 is supplied with current by the first power supply means 11A when the conducting wire 13 is cut in this embodiment. At this time, the sounding means 12 is supplied with a current from the second power supply means 11B, becomes energized, and emits an alarm sound. Thereby, the alarm device 10 according to the present invention can detect a disconnection of the conducting wire 13 with a simple structure and can issue an alarm.

  The structure of the electric wire antitheft device according to the embodiment of the present invention will be described with reference to FIG. Here, FIG. 2 is explanatory drawing explaining an example of the electric wire antitheft device 100 using the alarm device 10 (FIG. 1) which concerns on embodiment of this invention.

  The wire theft prevention device shown in FIG. 2 is an example, and the present invention is not limited to the wire theft prevention device shown in FIG.

  As shown in FIG. 2, the wire theft prevention device 100 according to the present invention includes an alarm device 10 that detects the disconnection of the wire 13 </ b> A (conductive wire) and issues an alarm in order to prevent the wire 13 </ b> A at the construction site from being stolen. Device. The wire theft prevention device 100 uses the sound generation means 12 (FIG. 1) to sound and emit an anti-theft alarm sound when the wire 13A (the lead wire 13 in FIG. 1) is cut. Moreover, the present invention may be an electric wire theft prevention system including a plurality of alarm devices 10 or electric wire theft prevention devices 100. In the electric wire theft prevention system according to the present invention, one communication unit is connected to another communication unit so as to be able to transmit and receive each other. Thereby, the wire theft prevention system according to the present invention can emit an alarm sound using one sounding means based on the sounding information from the other communication part received by one communication part.

  At the construction site where buildings are built sequentially from the lower floor, the upper floor is constructed with a roof exterior, while the lower floor is constructed with interiors. At this time, even if the intrusion prevention is insufficient, the electric wires are wired. In order to protect the electric wire 13A from theft, the electric wire theft prevention device 100 according to the present invention ties the electric wire 13A in a loop shape to constitute a crime prevention system. Specifically, as shown in FIGS. 1 and 2, the wire theft prevention device 100 according to the present invention has a wire from the first power supply 11 </ b> A via a resistor R <b> 1 when the monitored wire 13 </ b> A is connected. Since a current flows through 13A and the base potential of the transistor (switch means 14) is short-circuited to the ground GND, the transistor becomes non-conductive and the sounding means 12 (such as a buzzer) does not operate. In the wire theft prevention device 100, when the wire 13A is cut, the first power supply 11A supplies the base current to the transistor (switch means 14) via the resistor R1, and the transistor (switch means 14) is in a conductive state. Therefore, the sound generation means 12 rings and notifies / warns that the electric wire 13A has been disconnected. As a result, the wire theft prevention device 100 according to the present invention sounds an alarm when the wire is cut during theft, and can reduce theft damage.

  The first current 11A and / or the second current 11B may be battery-powered. Thereby, the wire antitheft device 100 according to the present invention can be easily carried, can be downsized, and can be easily installed. Moreover, the wire antitheft device 100 according to the present invention can constitute an antitheft system as an independent system even when the breaker of the main power source at the construction site is dropped. Furthermore, the wire theft prevention device 100 according to the present invention can be attached to a location that is not visible to the criminal by downsizing, and can be easily removed and reattached as the site progresses.

  As described above, the alarm device and the wire antitheft device according to the present invention have a simple structure and low cost using the switch means that is turned on / off in response to the first current or the second current. It is possible to issue a warning by detecting the disconnection of the conductor. In addition, the alarm device and the wire antitheft device according to the present invention can sound and emit an antitheft alarm sound when the electric wire at the construction site is cut.

  As mentioned above, although embodiment which concerns on this invention was described, this invention is not limited to said embodiment. That is, the present invention can be variously modified, changed, or arbitrarily modified based on the contents described in the claims for utility model registration.

DESCRIPTION OF SYMBOLS 100: Electric wire antitheft device 10: Alarm device 11A: 1st power supply means 11B: 2nd power supply means 12: Sound generation means (alarm sound speaker, theft horn, etc.)
13: Conductor 13A: Electric wire 14: Switch means (transistor, etc.)
Ia: First current Ib: Second current GND: Ground R1: Resistance

Claims (4)

An alarm device for detecting a disconnection of a conductor and issuing an alarm,
First power supply means for supplying a first current to the conducting wire;
Pronunciation means for issuing the alarm;
Second power supply means for supplying a second current to the sound generation means;
Switch means that is turned ON / OFF in response to the first current or the second current,
The first power supply means is connected to the ground via the conductor, and supplies current to the switch means when the conductor is disconnected,
The second power supply means is connected to the switch means via the sound generation means,
When the first power supply means supplies a current to the switch means, the sounding means is supplied with current from the second power supply means and is energized.
An alarm device characterized by that. The conducting wire is a construction site electric wire,
The sound generation means, when the electric wire is cut, sounds and emits an anti-theft alarm sound,
A wire theft prevention device using the alarm device according to claim 1. The sound generation means further includes a communication unit for inputting / outputting information to / from the outside,
The sound generation means generates a sound based on the information received by the communication unit,
The alarm device according to claim 1 or the electric wire theft prevention device according to claim 2. A plurality of alarm devices or wire theft prevention devices according to claim 3,
The one communication unit is connected to the other communication unit so as to be able to transmit and receive each other,
The one sounding means generates sound based on the sounding information from the other communication unit received by the one communication unit,
An electric wire theft prevention system characterized by this.