JP4840619B2 - Wireless wire lock lock - Google Patents

Description

  The present invention relates to a wire lock used as an antitheft device for construction sites, warehouses, bicycles, motorcycles, vending machines, and the like.

  Wire lock locks for theft prevention include known examples of wire locks disclosed in Japanese Patent Application Laid-Open No. 2001-65219, Utility Model Registration No. 3024157, and bicycle locks disclosed in Japanese Utility Model Publication No. 63-201174. It has a basic form with locking members that can be fitted to each other at both ends of the rope body, and the rope body is rolled up, passed through the wheel and wrapped around the vehicle body to make the wheel unrotatable, preventing theft It comes to plan.

  The above wire has been devised in terms of material and shape such as steel wire and metal chain so that it is not easily cut, but in recent years theft has the function of detecting the wire cut with an electric signal and sounding an alarm to threaten the criminal A preventer (Japanese Patent Laid-Open No. 2001-342771, etc.) has been devised.

  Such a wire lock lock has a function of threatening a criminal with a theft deterrent effect by increasing mechanical strength, an alarm sound, and the like, and since its structure is simple, its application range is wide. However, if the object to be locked is a large-scale construction site or a warehouse entrance, there are multiple locking cylinders in a wide area, so the intimidating alarm sound requires a large volume, and an alarm device is installed away from the locked part. Installation is also required.

  Furthermore, a communication function is required for notifying the management office away from the locked location of the occurrence of an abnormality, and for reporting the theft occurrence to the manager responsible for the absence at the site at night or on closed days.

  The problem to be solved by the present invention is to provide a wire lock lock that can be used as a security system for remote monitoring wirelessly, enabling an alarm device to be installed at a location away from the locked location, and managing office at a remote location. It is possible to report to a place or send an e-mail.

In the present invention, the above-described problems are solved by the following means. A wire lock used in a security system for wireless remote monitoring, using a coaxial cable or shielded cable as a wire , or a coaxial cable or shielded cable passed through a chain, and one end of the coaxial cable or shielded cable. Alternatively, a coaxial connector is connected to both ends to facilitate attachment / detachment with the main body, and a voltage is applied between the central conductor and the shield conductor at one end while the coaxial cable or shield cable is connected to the main body, and the other end is connected to the other end. An electronic circuit to which a load resistance is connected and which compares the voltage generated in the load resistance with a predetermined voltage in the main body, and a result of detecting the disconnection and short circuit of the coaxial cable or the shielded cable by the output signal of the electronic circuit wirelessly Wireless communication function for notification, and notification operation The wire lock lock that features that a wireless communication function that can enable or disable wirelessly from outside of the wire lock lock.

A plate-like locking mechanism is provided so that the coaxial connector attached to the coaxial cable or shielded cable is fitted with the coaxial receptacle of the main body so that the coaxial connector is sandwiched between the main body and the fitting is not released. Sometimes.

  According to the present invention, the state of a plurality of wire lock locks can be monitored at a location away from the lock location, and the status can be confirmed by e-mail or the like even when the manager is absent from the site. In addition, an alarm device can be installed at a location away from the locked portion, so that an alarm sound can be transmitted over a wide area. By combining the wire lock lock of the present invention with a management device, alarm device, relay device, etc., it is possible to construct a security system that is easy to install and capable of managing a wide range of lock locations.

  Details of the present invention will be described below with specific examples. FIG. 1 shows the appearance of the wire lock lock of the present invention. In FIG. 1, 1 is a coaxial cable or shielded cable that becomes a wire, 2 is a main body, 3 is a coaxial connector, and 4 is a coaxial receptacle.

  FIG. 7 shows a basic system using the wire lock lock of the present invention. The coaxial connector 3 and the coaxial receptacle 4 are fitted to the object to be locked through a wire (coaxial cable or shielded cable 1), and locking is completed by transmitting a locking signal from the management device 14 via radio. In unlocking, after the release signal is transmitted from the management device 14, the coaxial connector 3 and the coaxial receptacle 4 are unfitted.

  When the coaxial cable or the shielded cable 1 is cut in the locked state, the detection circuit built in the main body operates to report the abnormality to the management device 14 and the alarm device 15 wirelessly. The management device 14 is connected to the telecommunication line and automatically transmits an e-mail notifying the abnormality to a preset mail address. The alarm device 15 emits a loud alarm sound.

  Since these devices communicate with each other wirelessly, the installation location is not limited as long as the radio wave is within reach. Although not shown in the figure, it is also possible to expand the wireless reach using a relay device. There may be a plurality of these devices within the reach of radio waves. The use of radio makes it easy to change the installation location because there is no need for wiring.

  As an example of installation, the wire lock lock of the present invention is installed at a plurality of gates at a construction site, and the management device 14 is installed at an office. An alarm device 15 is also installed at the site. The person in charge at the site sets the electronic mail from the management device 14 to be received by the mobile phone. The last person leaving the site locks the gate with a wire lock, and then leaves the management apparatus 14 by transmitting a control signal for locking. In the unlikely event that the gate wire is cut, the person in charge of the site will be notified of the abnormality by e-mail, and an alarm device installed at the site will intimidate and report at a loud volume.

  FIG. 2 shows a block diagram of the wire lock tablet of the present invention. The operation principle of abnormality detection will be described with reference to this figure. The voltage of the power supply circuit 9 is input to the voltage detection circuit 5 via the coaxial cable 1 connected to the outside of the main body. When the voltage detection circuit 5 compares the reference voltage 11 with the voltage from the coaxial cable 1 and the CPU 6 determines that the result is abnormal, the wireless transceiver 7 performs communication. The wireless transceiver 7 also communicates control signals such as locking and unlocking with the management device.

  The detailed operation of the voltage detection circuit 5 will be described with reference to FIG. The power supply voltage supplied via the coaxial cable or the shielded cable 1 is divided by the resistors R1 (16) and R2 (17) and connected to the positive input of the voltage comparator 18. The reference voltage 11 is input to the negative input of the voltage comparator 18.

  As an example, if the reference voltage is 1/2 of the power supply voltage V and the resistance ratio of the resistor R1 (16) and the resistor R2 (17) is 1: 2, the voltage comparator 18 of the voltage comparator 18 is connected when the coaxial cable 1 is normally connected. Since the positive input is V × R2 / (R1 + R2) = V × 2/3 and the negative input is V × 1/2, 2/3> 1/2, and the output of the voltage comparator 18 becomes Hi. When the coaxial cable 1 is cut or the outer conductor and the inner conductor are short-circuited, the positive input voltage of the voltage comparator 18 becomes 0 volts, so that 0 <1/2 and the output of the voltage comparator 18 becomes Lo. Therefore, the state of the coaxial cable 1 can be monitored by the output level of the voltage comparator 18.

  In the above operating principle, the wire need not be a coaxial cable or a shielded cable, but may be a single-core electric wire. However, in the case of a single-core electric wire, it is relatively easy to peel off the sheath to expose the core wire and to bypass the flow of electricity using another electric wire, so the level of crime prevention decreases. The present invention pays attention to this point and uses a two-core cable such as a coaxial cable or a shielded cable as the wire.

  In these cables, since the offset wire which is an outer conductor covers the core wire in addition to the covering, it is not easy to expose the core wire. Even when a metal object such as a knife or a needle shorts the outer conductor and the core wire in the process of exposing the core wire, the output of the voltage comparator 18 becomes Lo and can be detected as an abnormality, so that it is possible to report an unauthorized unlocking. High nature.

  Since the coaxial cable or shielded cable can be easily cut with a tool such as a nipper, it may be unlocked in a short time. Therefore, as shown in FIG. Strength can be increased and the time required for unauthorized unlocking can be lengthened. Also, it can be expected to prevent unauthorized unlocking by showing that it is not easy to cut.

  By adding the lock mechanism 12 as shown in FIG. 4, it is possible to reinforce the strength of the fitting portion between the coaxial connector 3 and the coaxial receptacle 4 and to prevent the battery cover screw 13 from falling off. After fitting the coaxial connector 3 and the coaxial receptacle 4, the lock mechanism 12 is rotated as shown in the drawing so as to cover the fitting portion and the battery cover screw 13. Since the groove of the locking mechanism 12 is made smaller than the diameter of the flange of the coaxial connector 3 (portion indicated by hatching in the drawing), the flange of the coaxial connector 3 is attached to the locking mechanism 12 as shown in FIG. So that it cannot be easily removed from the coaxial receptacle 4. Since the battery cover screw 13 is also pressed from the front by the lock mechanism 12, it can be prevented from falling off.

  Since the wire lock lock is also used outdoors, the main body 2, the coaxial connector 3, and the coaxial receptacle 4 are waterproof.

  Appearance of wireless wire lock lock   Body block diagram   Voltage detection circuit   Lock mechanism schematic   Lock mechanism detail drawing   Chain reinforcement   Security system schematic

DESCRIPTION OF SYMBOLS 1 Coaxial cable or shielded cable 2 Main body 3 Coaxial connector 4 Coaxial receptacle 5 Voltage detection circuit 6 CPU
7 Radio transceiver 8 Antenna 9 Power supply circuit 10 Battery 11 Reference voltage 12 Lock mechanism 13 Battery cover screw 14 Management device 15 Alarm device 16 Resistance R1
17 Resistance R2
18 Voltage comparator 19 Chain 20 Communication network

Claims (2)

A wire lock used in a security system for wireless remote monitoring, using a coaxial cable or shielded cable as a wire , or a coaxial cable or shielded cable passed through a chain, and one end of the coaxial cable or shielded cable. Alternatively, a coaxial connector is connected to both ends to facilitate attachment / detachment with the main body, and a voltage is applied between the central conductor and the shield conductor at one end while the coaxial cable or shield cable is connected to the main body, and the other end is connected to the other end. An electronic circuit to which a load resistance is connected and which compares the voltage generated in the load resistance with a predetermined voltage in the main body, and a result of detecting the disconnection and short circuit of the coaxial cable or the shielded cable by the output signal of the electronic circuit wirelessly Wireless communication function for notification, and notification operation Wire lock lock that features that a wireless communication function that can be set to enable or disable wirelessly from outside of the wire lock lock. A plate-like locking mechanism is provided to prevent the coaxial connector attached to the coaxial cable or shielded cable from being inserted by being sandwiched between the coaxial connector and the coaxial receptacle of the main body. The wire lock lock according to claim 1.

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