JP2005182114A - Security device and security system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a security device that can be installed without degrading appearances and even in a humid room. <P>SOLUTION: In the security device 1, a light source 11 emits an optical signal S<SB>P</SB>into an optical fiber 12 attached with adhesive 19 to a sheet glass 18 fitted in a door or window of a building, a light receiving element 13 converts the optical signal S<SB>P</SB>transmitted through the optical fiber 18 to an electrical signal S<SB>E</SB>, and a control part 14 detects breakages or cracks in the sheet glass 18 in dependence on a change in the electrical signal S<SB>E</SB>to raise an alarm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In particular, the present invention relates to a crime prevention device that detects an abnormality that has occurred in a glass plate attached to a window or door of a building, and a crime prevention system using the crime prevention device.

  Conventional security sensors have a plate glass with a conductive member formed on the surface, placed in the opening of the building, connected to the power supply unit to the conductive member, energized, and connected to the detection unit to the conductive member to break the conductive member An unauthorized intrusion into a building is detected by detecting a change in resistance value due to (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-187344 (Claims 1, [0009], [0017] to [0025], FIGS. 1 and 2)

  By the way, in the above-mentioned conventional security sensor, since it is necessary to affix a conductive member on the substantially whole surface of plate glass, an external appearance is impaired. In addition, since a conductive member is used, it cannot be provided on a window or door of a room with high humidity such as a bath. In addition, when this type of security sensor is provided in each window or door, if the number of windows or doors is large or the size of the plate glass attached to the windows or doors is large, a large cost is required. In addition, when the number of security sensors is large, there is a configuration of a control device that controls the detection signal supplied from each security sensor and notifies the security room or security company of which window or door is abnormal. It becomes complicated.

  In order to solve the above-described problem, the security device of the present invention is provided with an optical fiber in glass attached to a door or window of a building, and the glass breaks based on a change in an optical signal transmitted through the optical fiber. Detects and cracks and issues an alarm.

  Moreover, the crime prevention device of the present invention is provided with an optical fiber on glass attached to a door or window of a building, a light source for inputting an optical signal into the optical fiber, and an optical signal emitted from the optical fiber converted into an electrical signal. And a control unit that detects a crack or a crack of the glass based on a change in the electrical signal and issues an alarm.

Moreover, the crime prevention device of the present invention provides an optical fiber in glass attached to a door or window of a building, makes a pulsed light incident on the optical fiber, and measures an OTDR waveform of backscattered light emitted from the optical fiber. Accordingly, an OTDR that evaluates an abnormality occurrence position in the optical fiber and outputs position data relating to the abnormality occurrence position, and a control unit that detects a glass break and a crack based on the position data and issues an alarm are provided.
The optical fiber described above is provided over a plurality of glasses respectively attached to a plurality of doors and windows.

  The crime prevention system according to the present invention includes any one of the crime prevention devices described above and external alarm means for issuing an alarm to the outside based on an alarm signal from the crime prevention device.

  The crime prevention device of the present invention is provided with a transparent optical fiber in glass attached to a door or window of a building, and detects cracks and cracks in the glass based on a change in an optical signal transmitted through the optical fiber, Raise an alarm. Therefore, the appearance is not impaired like a conventional security sensor made of a conductive member. Further, since electricity is not conducted to the optical fiber itself, it can be provided also in a window or door of a humid room such as a bath.

Moreover, the crime prevention device of the present invention is provided with an optical fiber on glass attached to a door or window of a building, a pulsed light is incident on the optical fiber from the OTDR, and an OTDR waveform of the backscattered light emitted from the optical fiber is obtained. By measuring, an abnormality occurrence position in the optical fiber is evaluated, and position data relating to the abnormality occurrence position is output. A control part detects a crack and a crack of glass based on position data, and issues a warning. Therefore, it is possible to notify which window or door has an abnormality with a simple configuration.
Moreover, in this invention, the optical fiber is provided over the several said glass each attached to the some door and window. Therefore, even if the number of windows and doors is large or the size of the plate glass attached to the windows and doors is large, crime prevention can be performed with a low cost.

  Further, the crime prevention system of the present invention includes any one of the crime prevention devices described above and external alarm means for issuing an alarm to the outside based on an alarm signal from the crime prevention device. Can be emitted.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing the configuration of a security system according to Embodiment 1 of the present invention.
The crime prevention system of this example is schematically configured by a crime prevention device 1, a network 2, a security company client 3, a base station 4, a portable terminal 5, and a guard car terminal 6. The security device 1, the security company client 3, and the base station 4 are connected via the network 2.

The security device 1 includes a light source 11, an optical fiber 12, a light receiving element 13, a control unit 14, an alarm unit 15, a communication unit 16, and a release button 17. The light source 11 is, for example, a semiconductor laser or a light emitting diode for emitting light signals S _P output monochromatic light or white light having a predetermined wavelength continuously. The optical fiber 12 is, for example, a strand having a fiber diameter of 250 μm, made of plastic such as quartz or PMMA (polymethyl methacrylate (polymethyl methacrylate, acrylic resin)), and the optical signal S _P supplied from the light source 11. Is transmitted. The number of propagation modes of the optical fiber 12 may be either single mode or multimode. As shown in FIG. 1, the optical fiber 12 is affixed to the housing side of a plate glass 18 attached to a door or window with an adhesive 19, a transparent tape (not shown), a transparent film (not shown), or the like. When the optical fiber 12 is affixed to the plate glass 18, the optical fiber 12 is bent and affixed to almost the entire surface of the plate glass 18 so that the radiation loss is minimized. This optical fiber sticking method is similarly used in other embodiments described later.

Light-receiving element 13 is a photodiode, phototransistor, photoconductive cells or made from the solar battery or the like, an optical signal S _P emitted from the output end of the optical fiber 12 into an electric signal S _E output. The control unit 14 includes a central processing unit (CPU), a digital signal processor (DSP), a sequencer, and the like, and a reference voltage value (threshold value) in which the voltage value V _D of the electric signal S _E supplied from the light receiving element 13 is set in advance. compared to V _TH, when the voltage value V _D lower than the reference voltage value V _TH, it is determined that the thief invasion like some abnormality occurs, the first alarm signal indicating the abnormality to the alarm unit 15 S _A1 And a second alarm signal S _A2 indicating the occurrence of an abnormality is supplied to the communication unit 16. Further, the control unit 14 stops the supply of the first alarm signal S _A1 to the alarm unit 15 based on the release signal S _C supplied from the release button 17.

For example, the alarm unit 15 includes an acoustic alarm device, a light emitting diode (LED), a display lamp such as a light bulb. Based on the first alarm signal S _A1 , the acoustic alarm device notifies the occurrence of abnormality by an alarm or sound. On the other hand, the indicator lamp notifies the occurrence of abnormality by continuous lighting or blinking lighting based on the first alarm signal S _A1 . The alarm unit 15 is not only installed at a predetermined location in the house or office in order to notify the customer or the related person inside the building of the occurrence of the abnormality, but also notifies the neighbor of the occurrence of the abnormality in the house or office. You may install in the outer wall etc. of the said house or office in order to alert | report. Here, the customer means a person who has signed a security security contract with a security company. The communication unit 16 includes a modem, a terminal adapter, a router, and the like. The communication unit 16 transmits the second alarm signal S _A2 to the security company client 3 through the network 2 using a predetermined protocol, and also through the network 2 and the base station 4. It transmits to the portable terminal 5 which a customer or its related person possesses. Release button 17 is a button for canceling the alarm by the alarm unit 15, by being pressed by the customer or the party, generates a release signal S _C, to the control unit 14. The release button 17 needs to be provided at a position where an intruder such as a thief cannot easily find it. Further, in order to cancel the alarm by the alarm unit 15, a plurality of digits of the code number may be input instead of the cancel button 17, or a plurality of buttons may be operated. The main body of the security device 1 in which the light source 11, the light receiving element 13, the control unit 14, the alarm unit 15, the communication unit 16, and the release button 17 described above are housed in one housing is a predetermined in a customer's house or office. It is installed at the location.

  The network 2 includes, for example, a local area network (LAN), a wide area network (WAN), the Internet, a mobile communication network, a fixed communication network, and the like. In the network 2, the security device 1, the security company client 3, and the base station 4 are wired or wirelessly connected by, for example, a twisted pair cable, a coaxial cable, an optical fiber cable, or the like.

  For example, one or a plurality of security company clients 3 are installed at the head office or sales office of the security company. The security company client 3 includes an information processing apparatus such as a computer having a control unit, a storage unit, an operation unit, a display unit, a communication unit, and the like. The control unit includes a CPU and the like, and executes a security monitoring process, a warning notification process, and the like based on a security monitoring program and a warning notification program stored in the storage unit, and controls each part of the security company client 3. That is, for example, when a security monitoring program is read from the storage unit, it is read by the control unit and controls the operation of the control unit. When the security monitoring program is activated, the control unit executes a security monitoring process under the control of the security monitoring program.

The security monitoring process constantly monitors whether or not the second alarm signal S _A2 is transmitted from the security device 1 installed in the home or office of each customer who has signed a security security contract with the security company. When the alarm signal S _A2 is transmitted, the name or name of the customer is notified to the security staff stationed at the head office or sales office of the security company. In the alarm notification process, a third alarm signal S _A3 indicating that an abnormality has occurred in the customer's home or office of the security company is transmitted to the security car terminal 6 via the network 2 and the base station 4 using a predetermined protocol. It is processing.

The storage unit includes a RAM, a ROM, a semiconductor memory such as a flash memory, an FD drive to which an FD (floppy (registered trademark) disk) is mounted, an HD drive to which an HD (hard disk) is mounted, and an MO (optical magnetic field). ) MO disc drive to which a disc is mounted, or a CD (compact disc) -ROM, CD-R (Recordable), CD-RW (ReWritable), DVD-ROM, DVD-R, DVD-RW, etc. It consists of a CD / DVD drive. The storage unit stores various data in addition to various programs executed by the control unit. The operation unit includes a keyboard and a mouse. The display unit includes a CRT display, a liquid crystal display, a plasma display, or the like. The communication unit receives the second alarm signal S _A2 transmitted from the security device 1 via the network 2 with a predetermined protocol, and also transmits the third alarm signal S _A2 with a predetermined protocol via the network 2 and the base station 4. Is transmitted to the guard car terminal 6.

The base station 4 is installed outdoors or indoors at predetermined intervals, for example. The base station 4 receives the second alarm signal S _A2 transmitted from the security device 1 via the network 2 and the third alarm signal S _A3 transmitted from the security company client 3 via the network 2 to receive the antenna. 7 is converted into radio waves and transmitted to the mobile terminal 5 or the guard car terminal 6. In addition, the base station 4 receives radio waves transmitted from the mobile terminal 5 or the guard car terminal 6 with the antenna 7 and converts them into communication signals, and transmits them to the guard company client 3 and the like via the network 2.

The mobile terminal 5 is, for example, a mobile phone or a simple mobile phone (PHS: Personal Handy-phone System). The portable terminal 5 includes a control unit, a storage unit, a display unit, an operation unit, a transmission / reception unit, a transmission / reception unit, a notification unit, and the like. A control part consists of CPU etc., performs abnormality alerting processing etc. based on various programs memorized by storage part, and controls each part of this portable terminal 5. The abnormality notification process controls the notification unit based on the second alarm signal S _A2 transmitted from the crime prevention apparatus 1 via the network 2 and the base station 4, and indicates that an abnormality has occurred in the house or office. 5 is a process of informing the owner of the item. Further, the control unit uses the control signal supplied from the transmission / reception unit for processing inside the control unit, processes the audio signal supplied from the transmission / reception unit, supplies the processed signal to the transmission / reception unit, and is supplied from the transmission / reception unit The audio signal is processed and supplied to the transmission / reception unit.

  The storage unit includes a RAM, a ROM, or a semiconductor memory such as a flash memory. The storage unit stores various data in addition to various programs executed by the control unit. The display unit includes a liquid crystal display, an organic EL display, a plasma display, or the like. The operation unit includes a power button for turning on / off the power of the mobile terminal 5, a numeric keypad used to input a telephone number of the other party, a call button for setting the mobile terminal 5 in a call state when an incoming call is received Etc. The transmission / reception unit receives a radiotelephone signal transmitted from the base station 4 via the antenna 7, demodulates the audio signal, communication data, or control signal and supplies the demodulated signal to the control unit, and the audio supplied from the control unit Signals, communication data, or control signals are modulated into radio telephone signals and transmitted to the base station 4.

  The transmission / reception unit includes a speaker and a microphone, and emits sound from the speaker based on an audio signal supplied from the control unit, and supplies an audio signal converted from the sound by the microphone to the control unit. It is used for telephone conversations. The notification unit includes a light emitting diode that blinks in a predetermined cycle and a predetermined color, a sounder that generates a single sound, a vibrator that vibrates the casing of the mobile terminal 5, and the like. The owner of the portable terminal 5 is notified that an abnormality has occurred in the house or office.

The guard car terminal 6 belongs to a sales office of a guard company whose area is a customer's house or office, and is mounted on a guard car that periodically patrols the area. The guard car terminal 6 is configured by a computer having a control unit, a storage unit, a display unit, an operation unit, a communication unit, a notification unit, and the like. A control part consists of CPU etc., performs an abnormality alerting process, a car navigation process, etc. based on the various programs memorize | stored in the memory | storage part, and controls each part of this guard car terminal 6. FIG. The abnormality notification process controls the notification unit based on the third alarm signal S _A3 transmitted from the security company client 3 via the network 2 and the base station 4, and a customer's house or office existing in the holding area. This is a process of notifying a security guard boarding a security car equipped with the security car terminal 6 that an abnormality has occurred. The car navigation process is a process of guiding the location of the customer's house or office existing in the holding area. This car navigation process is a well-known technique and will not be described in particular.

  The storage unit includes a semiconductor memory such as a RAM, a ROM, or a flash memory, an FD drive to which an FD is mounted, an HD drive to which an HD is mounted, an MO disk drive to which an MO disk is mounted, a CD-ROM, a CD-R CD-RW, DVD-ROM, DVD-R, DVD-RW, etc. The storage unit stores various data in addition to various programs executed by the control unit. The display unit includes a liquid crystal display, an organic EL display, a plasma display, or the like.

  The operation unit includes a pointing device such as a keyboard, a touch pad, or a pen device. The communication unit receives a radio telephone signal transmitted from the base station 4 via the antenna 7, demodulates communication data or a control signal, supplies the demodulated communication data or control signal to the control unit, and supplies communication data or control signal supplied from the control unit. Is modulated into a radio telephone signal and transmitted to the base station 4. The notification unit consists of a light emitting diode that flashes in a predetermined cycle and a predetermined color, a sounder that generates a single sound, etc., and is abnormal in a customer's house or office in the holding area under the control of the control unit. Is notified to the guards boarding the guard car on which the guard car terminal 6 is mounted.

Next, the operation of the security system configured as described above will be described with reference to the flowchart shown in FIG. In the installed state shown in FIG. 1, when the power supply is introduced into the body of the security device 1, a light source 11, for example, one for emitting light signals S _P output monochromatic light having a predetermined wavelength in a continuous, control unit 14, various units Perform initial settings for. This initial setting is, for example, clearing various registers secured in a working RAM constituting a storage unit (not shown). And the control part 14 progresses to step SP1 shown in FIG. In step SP1, after setting the reference voltage value (threshold value) V _TH , the control unit 14 proceeds to step SP2. In this reference voltage value setting process, first, since the control unit 14 does not cause any abnormality such as a crack or a crack in the glass plate 18, the optical fiber 12 affixed to the glass plate 18 also has an abnormality such as a break or a crack. The voltage value V _D of the electric signal S _E supplied from the light receiving element 13 in a state where no occurrence occurs is set as the normal voltage value V _N (see FIG. 3). Next, the control unit 14 has a reference voltage value (threshold value) in order to accurately detect a state in which an abnormality such as a disconnection or a crack has occurred in the optical fiber 12 because a certain abnormality such as a crack or a crack has occurred in the glass plate 18. Set V _TH (see Figure 3). Incidentally, the variation with time or the like, may decrease the light intensity of the optical signal S _P is emitted from the light source 11, the transmission efficiency of the optical fiber 12 may be deteriorated, the control unit 14, in consideration of the fact that The reference voltage value (threshold value) V _TH is set at the beginning of the installation of the security device 1 and the reference voltage value setting process described above is executed regularly or irregularly.

In step SP2, the control unit 14 compares the voltage value V _D of the electric signal S _E supplied from the light receiving element 13 with the reference voltage value (threshold value) V _TH described above, and the voltage value V _D is the reference voltage value V _TH. Determine if it is lower. When the determination result is “NO”, the control unit 14 repeats the determination. Since no abnormality such as a crack or a crack has occurred in the glass plate 18, the voltage value V _D of the electric signal S _E is a normal voltage value in a state in which no abnormality such as a disconnection or a crack has occurred in the optical fiber 12. Since V _N is equal to or higher than the reference voltage value V _TH as shown in FIG. 3, the control unit 14 repeats the process of step SP2.

Then, for example, in order for a thief or the like to enter the house, at the time t ₀ , the center portion of the plate glass 18 is beaten with a hammer or a bar to generate a crack 21 in the plate glass 18 as shown in FIG. As a result, it is assumed that the disconnection 22 is also generated in the optical fiber 12 attached in the vicinity of the substantially central portion of the plate glass 18. As a result, emitted from the light source 11 ever, the majority of the optical signal S _P to the middle optical fiber 12 has been transmitted is not transmitted, only very little light signal S _P from the output end of the optical fiber 12 is emitted Is done. Accordingly, since the light receiving element 13 converts the very small optical signal _SP into the electric signal S _E , the voltage value V _D of the electric signal S _E at the time t ₀ is the reference voltage as shown in FIG. _Lower than the value V _TH . Thereby, the determination result of step SP2 is “YES”, and the control unit 14 proceeds to step SP3.

In step SP3, the control unit 14 starts timing of a hard timer or a program timer provided therein and supplies the first alarm signal S _A1 indicating the occurrence of abnormality to the alarm unit 15, and then proceeds to step SP4. . In the alarm unit 15, based on the first alarm signal S _A1 , the acoustic alarm device notifies the occurrence of abnormality by an alarm, for example, while the indicator lamp notifies the occurrence of abnormality by, for example, continuous lighting. Therefore, the customer, the person concerned, or the neighbor in the building can recognize the occurrence of an abnormality such as a thief intrusion.

At step SP4, if the control unit 14, sets the elapsed time T _P obtained from the hard timer or program timer was started counting in the process of step SP3 is preset time T _S (e.g., 1 minute) shorter than not Determine whether. If this determination is “YES”, the control unit 14 proceeds to step SP5. In step SP5, the control unit 14 determines whether or not the release signal S _C is supplied from the release button 17. If this determination is “NO”, the control unit 14 returns to step SP4.

On the other hand, if the determination result in step SP5 is “YES”, that is, if the release signal S _C is supplied from the release button 17, the control unit 14 proceeds to step SP6. In step SP6, the control unit 14 stops supplying the first alarm signal S _A1 to the alarm unit 15, and then returns to step SP2. Thereby, in the alarm unit 15, the acoustic alarm device stops the alarm and the indicator lamp is also turned off based on the supply stop of the first alarm signal S _A1 . The reason why the processes of steps SP4 to SP6 described above are performed is as follows. That is, the customer or the related person is inside the building, and the alarm is notified not due to the intrusion of a thief or the like, for example, because the customer or the like accidentally caused the crack 21 in the plate glass 18. This is to allow the customer etc. to release the alarm on their own in consideration of the case of

On the other hand, if the determination result in step SP4 is “NO”, that is, the elapsed time T _P is equal to or longer than a preset time T _S (for example, 1 minute), and the release button 17 is not operated. If the release signal S _C is not supplied, the control unit 14 proceeds to step SP7. In step SP7, after supplying the second alarm signal S _A2 indicating the occurrence of abnormality to the communication unit 16, the control unit 14 ends the series of processes. As a result, the communication unit 16 transmits the second alarm signal S _A2 to the security company client 3 via the network 2 using a predetermined protocol, and is owned by the customer or the related person via the network 2 and the base station 4. It transmits to the portable terminal 5.

Therefore, in the mobile terminal 5 that has received the second alarm signal S _A2 , the control unit controls the notification unit based on the second alarm signal S _A2, and the owner of the mobile terminal 5 indicates that an abnormality has occurred in the house. To inform. On the other hand, in the security company client 3 that has received the second alarm signal S _A2 , the control unit executes a security monitoring process and an alarm notification process. That is, the control unit of the security company client 3 is stationed at the headquarters or sales office of the security company, together with the name of the customer who is the resident of the house that has transmitted the second alarm signal S _A2 , that the abnormality has occurred in the house. Notify the guards who are present. The control unit of the security company client 3 sends a third alarm signal S _A3 indicating that an abnormality has occurred in the customer's house to the security vehicle terminal 6 via the network 2 and the base station 4 according to a predetermined protocol. Transmit to the terminal 6.

Thereby, in the guard car terminal 6 which received 3rd warning signal _SA3 , a control part performs abnormality alerting | reporting process. That is, the control unit of the guard car terminal 6 controls the notifying unit based on the third alarm signal S _A3 and informs the guard car on which the guard car terminal 6 is mounted that an abnormality has occurred in the customer's house. Inform the guards on board. Therefore, when the guard instructs the execution of the car navigation process to rush to the house, the control unit of the guard car terminal 6 guides to the customer's house.

As described above, according to the configuration of this example, the optical fiber 12 that is extremely fine (fiber diameter: 250 μm) is pasted with the adhesive 19 or the like on almost the entire surface of the flat glass 18 attached to the door or window on the house side. together, thief or the like beating sheet glass 18 21 like cracking the glass sheet 18 is generated by disconnection 22, etc. is generated in the optical fiber 12 with it, the transmission of the transmitted optical signal S _P in the optical fiber 12 When loss occurs, this is detected and an external alarm is issued. Therefore, the appearance is not impaired like a conventional security sensor made of a conductive member. Moreover, since electricity does not conduct to the optical fiber 12 itself, it can be provided also in a window or door of a room with high humidity such as a bath.

Embodiment 2. FIG.
In Embodiment 1 described above, an example in which one optical fiber 12 is attached to one sheet glass 18 with an adhesive 19 is shown, but the present invention is not limited to this. For example, as shown in FIG. 5, the present invention can also be applied to a case where _one optical fiber 23 is attached to a plurality of glass sheets 24 _{1 to} 24 ₆ with adhesives 25 _{1 to} 25 ₆ . In this case, the optical fiber 23 may be attached to any part of each of the glass plates 24 _{1 to} 24 ₆ . Further, the optical signal S _P emitted from the light source 11 shown in FIG. 1 is incident from the input end 23a of the optical fiber 23, and the optical signal S _P emitted from the output end 23b of the optical fiber 23 is received as shown in FIG. The device 13 is configured to receive light. Thus, according to the second embodiment, one optical fiber 23 can be attached to a plurality of plate glasses 24 _{1 to} 24 ₆ with adhesives 25 _{1 to} 25 ₆ . Therefore, even if the number of windows and doors is large or the size of the plate glass attached to the windows and doors is large, crime prevention can be performed with a low cost.

Embodiment 3 FIG.
FIG. 6 is a block diagram showing the configuration of the security device 31 according to the third embodiment of the present invention. In FIG. 6, parts corresponding to those in FIG. In the crime prevention device 31 shown in FIG. 6, optical fibers 32 _{1 and} 32 ₂ , a control unit 33 and an alarm unit 34 are newly provided in place of the optical fiber 12, the control unit 14 and the alarm unit 15 shown in FIG. Yes. Optical switches 35 ₁ and 35 ₂ are newly provided. The security device 31 is provided in place of the security device 1 in the security system shown in FIG. 1, and the communication unit 16 is connected to the network 2 shown in FIG.

The security device 31 is applied to a building such as a two-story single-family house, an apartment house, or a building. 6, with six flat glass 36 _{11-36 16} there is a door or window attached to the first floor of the building, the glass sheet 36 _{21-36 26} 6 images on the second floor portion of the building is attached door An example with a window is shown. As shown in FIG. 6, the optical fiber 32 ₁ has an adhesive, a transparent tape, and a transparent tape on the indoor side of six plate glasses 36 _{11 to} 36 ₁₆ attached to doors and windows provided on the first floor of the building. Affixed with a film (both not shown) or the like. Similarly, as shown in FIG. 6, the optical fiber 32 ₂ is adhesive or transparent on the indoor side of six plate glasses 36 _{21 to} 36 ₂₆ attached to doors and windows provided on the second floor of the building. It is affixed with a tape, a transparent film (both not shown) or the like. The input end of the optical fiber 32 ₁ is connected to the first output end of the optical switch 35 ₁ , and the output end thereof is connected to the first input end of the optical switch 35 ₂ . Similarly, the input end of the optical fiber 32 ₂ is connected to the second output end of the optical switch 35 ₁ , and the output end is connected to the second input end of the optical switch 35 ₂ . The optical fibers 32 ₁ and 32 ₂ have the same structure and function as the optical fiber 12 described in the first embodiment.

The control unit 33 includes a CPU, a DSP, a sequencer, and the like, and supplies a switching signal S _SC to the optical switches 35 ₁ and 35 ₂ . The switching signal S _SC is, for example, “H” level V _H in the first period, “L” level V _{L in} the second period, and alternately with the first period and the second period as one cycle. It is a repeated signal. The first period and the second period is equal Basically, if the transmission time of the optical signal S _P in the optical fiber 32 ₁ and 32 ₂ of the optical fiber 32 ₁ and 32 ₂ the length, etc. cause different Depending on the difference, the first period and the second period may be different.

Further, in the first period, the control unit 33 presets the voltage value V _D1 of the electrical signal S _E corresponding to the optical signal S _P transmitted through the optical fiber 32 ₁ supplied from the light receiving element 13. Compared to the reference voltage value (threshold value) V _TH1 , if the voltage value V _D1 is lower than the reference voltage value V _TH1 , it is judged that some abnormality such as a thief intrusion has occurred on the first floor of the building, and the alarm unit A first alarm signal S _A11 indicating the occurrence of an abnormality in the first floor portion of the building is supplied to 34, and a second alarm signal S _A21 indicating the occurrence of an abnormality in the first floor portion of the building is supplied to the communication unit 16. On the other hand, in the second period, the control unit 33, and sets the voltage value V _D2 of the electric signal S _E corresponding to the optical signal S _P which has been transmitted through the optical fiber 32 ₂ supplied from the light receiving element 13 in advance Compared with the reference voltage value (threshold value) V _TH2 , if the voltage value V _D2 is lower than the reference voltage value V _TH2 , it is judged that some abnormality such as a thief intrusion has occurred on the second floor of the building, and the alarm unit The first alarm signal S _A12 indicating the occurrence of an abnormality in the second floor portion of the building is supplied to 34, and the second alarm signal S _A22 indicating the occurrence of an abnormality in the second floor portion of the building is supplied to the communication unit 16. Further, the control unit 33 stops the supply of the first alarm signal S _A11 or S _A12 to the alarm unit 34 based on the release signal S _C supplied from the release button 17.

The alarm unit 34 includes, for example, an acoustic alarm device, an indicator lamp such as an LED or a light bulb. Based on the first alarm signals S _A11 and S _A12 , the acoustic alarm device, for example, alarms of different timbres, for example, “abnormality has occurred in the first floor part” or “abnormality has occurred in the second floor part” The occurrence of an abnormality is notified by a voice message such as “I am doing”. On the other hand, based on the first alarm signals S _A11 and S _A12 , the indicator lamp notifies the occurrence of an abnormality through continuous lighting or flashing lighting, or continuous lighting of different emission colors or flashing lighting of different periods. The alarm unit 34 is not only installed at a predetermined location in the house or office in order to notify the customer in the building or the related person of the occurrence of the abnormality, but also notifies the neighbor of the occurrence of the abnormality in the house or office. You may install in the outer wall etc. of the said house or office in order to alert | report.

The optical switch 35 _1, a first period, i.e., between the switching signal S _SC is "H" level V _H, the optical signal S _P entered from the input terminal is emitted from the first output optical fiber enters the 32 _first input terminal, a second period, i.e., between the switching signal S _SC is "L" level V _L, and emits a light signal S _P entered from the input terminal from the second output terminal To the input end of the optical fiber 32 ₂ . On the other hand, the optical switch 35 ₂ emits light emitted from the output end of the optical fiber 32 ₁ and incident from the first input end during the first period, that is, when the switching signal S _SC is at the “H” level V _H. incident signal S _P to the light receiving element 13 is emitted from the output end, the second period, i.e., between the switching signal S _SC is "L" level V _L, the emitted from the output end of the optical fiber 32 ₂ an optical signal S _P which is incident from the second input terminal is emitted from the output end is incident on the light receiving element 13. The main body of the crime prevention device 31 in which the components other than the optical fibers 32 ₁ and 32 ₂ described above are housed in one housing is installed at a predetermined location in the customer's house or office.

Next, operation | movement of the crime prevention apparatus 31 of the said structure is demonstrated with reference to the flowchart shown in FIG. In the installed state shown in FIG. 6, when the power supply is introduced into the body of the security device 31, light source 11, for example, one for emitting light signals S _P output monochromatic light having a predetermined wavelength in a continuous, control unit 33, various units Perform initial settings for. This initial setting is, for example, clearing various registers secured in a working RAM constituting a storage unit (not shown). And the control part 33 progresses to step SP11 shown in FIG. In step SP11, after setting the reference voltage values (threshold values) V _TH1 and V _TH2 , the control unit 33 proceeds to step SP12.

In this reference voltage value setting process, first, the control unit 33 outputs the switching signal S _SC while fixing it to the “H” level V _H. Thus, the optical switch 35 _1, the optical signal S _P entered from the input terminal is emitted from the first output incident on the input end of the optical fiber 32 _1, the optical switch 35 _2, the optical fiber 32 ₁ is emitted from the output end and emitted from the output end of the incident optical signal S _P from the first input terminal enters the light receiving element 13. Next, since the control unit 33 does not cause any abnormality such as cracks or cracks in all the plate glasses 36 _{11 to} 36 ₁₆ , the optical fiber 32 ₁ affixed to these plate glasses 36 _{11 to} 36 ₁₆ is also disconnected. The voltage value V _D of the electric signal S _E supplied from the light receiving element 13 in a state where no abnormality such as a crack or the like has occurred is defined as a normal voltage value V _N1 . Next, the control unit 33 accurately detects a state in which an abnormality such as a disconnection or a crack has occurred in the optical fiber 32 ₁ because any abnormality such as a crack or a crack has occurred in any of the glass plates 36 _{11 to} 36 _{16. Is} set to a reference voltage value (threshold value) V _TH1 .

Next, the control unit 33 switches the switching signal S _SC to the “L” level V _L and outputs it. Accordingly, the optical switch 35 _1, the optical signal S _P entered from the input terminal and output from the second output end is incident on the input end of the optical fiber 32 _2, the optical switch 35 _2, the optical fiber 32 ₂ It is emitted from the output end and emitted from the output end of the optical signal S _P which is incident from the second input end incident on the light receiving element 13. Next, the control unit 33, because all of the glass sheet 36 _{21-36 26} to breakage and cracks no abnormality even does not occur, breakage in the optical fibers 32 ₂ affixed to these glass sheets 36 _{21-36 26} The voltage value V _D of the electric signal S _E supplied from the light receiving element 13 in a state where no abnormality such as cracks or cracks has occurred is defined as a normal voltage value V _N2 . Next, the control unit 33 accurately detects a state in which an abnormality such as a break or a crack has occurred in the optical fiber 32 ₂ because any abnormality such as a crack or a crack has occurred in any of the plate glasses 36 _{21 to} 36 _{26. Is} set to a reference voltage value (threshold value) V _TH2 . Incidentally, the variation with time or the like, or the light intensity is lowered in the optical signal S _P emitted from the light source 11, the transmission efficiency of the optical fiber 32 ₁ or 32 ₂ is reduced in some cases, the control unit 33, that the In consideration of the above, the reference voltage values (threshold values) V _TH1 and V _TH2 are set at the beginning of the installation of the security device 31, and the reference voltage value setting process described above is executed regularly or irregularly.

In step SP 12, the control unit 33 is a first time period "H" level V _H, after starting the output of the second time period is at "L" level V _L switching signal S _SC, to step SP13 move on. Thus, the optical switch 35 ₁ in the first period, the optical signal S _P entered from the input terminal is emitted from the first output incident on the input end of the optical fiber 32 _1, the second time period in the optical signal S _P entered from the input terminal is emitted from the second output terminal switches to be incident on the input end of the optical fiber 32 _2. On the other hand, the optical switch 35 ₂ is in the first period, and emits the optical signal S _P which has entered from the first input terminal is emitted from the optical fiber 32 ₁ in the output from the output end is incident on the light receiving element 13 in the second period, switched as to emit an optical signal S _P which is incident from the second input terminal is emitted from the output end of the optical fiber 32 ₂ from the output end is incident on the light receiving element 13.

In step SP13, the control unit 33 determines whether or not the switching signal _SSC is at the “H” level V _H. If this determination is “YES”, the control unit 33 proceeds to step SP14. In step SP14, the control unit 33 compares the voltage value V _D of the electric signal S _E supplied from the light receiving element 13 with the reference voltage value (threshold value) V _TH1, and the voltage value V _D is the reference voltage value V _TH1. Determine if it is lower. If this determination is “NO”, the control unit 33 returns to step SP13. Since no abnormality such as cracks or cracks has occurred in all the plate glasses 36 _{11 to} 36 ₁₆ , the voltage value of the electric signal S _E is in a state where no abnormality such as disconnection or cracks has occurred in the optical fiber 32 _1. Since V _D is the normal voltage value V _N1 and is equal to or higher than the reference voltage value V _TH1 , the control unit 33 returns to step SP13.

Then, for example, to thieves or the like from entering the first floor of the building, at a certain time, a portion of the one of the glass sheets 36 _{11-36 16} and beaten by a hammer or a bar or the like, Ya cracks on the plate glass by generating cracks, and breakage and cracks to an optical fiber 32 ₁ affixed to that portion vicinity of the plate glass occurs. As a result, emitted from the light source 11 ever, no longer transmitted most of the optical signal S _P which has been transmitted through the optical fiber 32 ₁ medium through the optical switch 35 _1, negligible from the optical fiber 32 ₁ in the output only an optical signal S _P is emitted. Therefore, since the light receiving element 13 converts the very small optical signal _SP into the electric signal S _E , the voltage value V _D of the electric signal S _E at this time is lower than the reference voltage value V _TH1 . Thereby, the determination result in step SP14 is “YES”, and the control unit 33 proceeds to step SP15.

In step SP15, the control unit 33 starts timing of a hard timer or a program timer provided therein and supplies the first alarm signal S _A11 indicating the occurrence of an abnormality to the alarm unit 34, and then proceeds to step SP16. . In the alarm unit 34, based on the first alarm signal S _A11 , the acoustic alarm device, for example, a timbre alarm corresponding to the occurrence of an abnormality in the first floor part or “an abnormality has occurred in the first floor part”, etc. While the occurrence of the abnormality is notified by the voice message, the indicator lamp notifies the occurrence of the abnormality by continuously lighting the emission color corresponding to the occurrence of the abnormality on the first floor portion, for example. Therefore, the customer or the related person inside the building, or a neighbor can recognize the occurrence of an abnormality such as a thief intrusion in the first floor portion of the building.

In step SP16, the control unit 33, or shorter than the set elapsed time T _P obtained from the hard timer or program timer was started counting in the process of step SP15 is preset time T _S (e.g., 1 minute) or not Determine whether. If this determination is “YES”, the control unit 33 proceeds to step SP17. In step SP17, the control unit 33 determines whether or not a release signal S _C is supplied from the release button 17. If this determination is “NO”, the control unit 33 returns to step SP16.

On the other hand, if the determination result in step SP17 is “YES”, that is, if the release signal S _C is supplied from the release button 17, the control unit 33 proceeds to step SP18. In step SP18, the control unit 33 stops supplying the first alarm signal S _A11 to the alarm unit 34, and then returns to step SP13. Thereby, in the alarm part 34, based on the supply stop of 1st alarm signal _SA11 , while an acoustic alarm device stops the output of an alarm or an audio | voice message, an indicator lamp also turns off. The reason for performing the processes of steps SP16 to SP18 is the same as the reason for performing the processes of steps SP14 to SP16 in the first embodiment.

On the other hand, when the determination result in step SP16 is “NO”, that is, the elapsed time T _P is equal to or longer than a preset time T _S (for example, 1 minute), and the release button 17 is not operated. If the release signal S _C is not supplied, the control unit 33 proceeds to step SP19. In step SP19, the control unit 33 supplies the communication unit 16 with the second alarm signal S _A21 indicating the occurrence of an abnormality in the first floor portion of the building, and then ends the series of processes. As a result, the communication unit 16 transmits the second alarm signal S _A21 to the security company client 3 via the network 2 using a predetermined protocol, and is owned by the customer or the related person via the network 2 and the base station 4. It transmits to the portable terminal 5. In addition, about the process in the portable terminal 5, the security company client 3, and the guard car terminal 6 after this, except the owner etc. of the portable terminal 5 can recognize abnormality generation in the 1st floor part of the said building. Since this is the same as in the first embodiment, the description thereof is omitted.

On the other hand, if the determination result in step SP13 is “NO”, that is, if the switching signal S _SC is not the “H” level V _H but the “L” level V _L , the control unit 33 proceeds to step SP20. move on. The processing of steps SP20 to SP25 is substantially the same as the processing of steps SP14 to SP19 described above, except that the occurrence of an abnormality such as a thief intrusion in the second floor portion of the building is monitored.

As described above, according to the configuration of this example, the optical fibers 32 ₁ and 32 ₂ are respectively attached to the six glass plates 36 _{11 to} 36 attached to the doors and windows provided on the first floor portion and the second floor portion of the building. while attached to ₁₆ and 36 ₂₁ to 36 _26, its inside an optical switch 35 ₁ and 35 ₂ are periodically switched by the switching signal S _SC incident alternately optical signal S _P to the optical fiber 32 ₁ and 32 ₂ The change of the voltage value V _D of the electric signal S _E obtained by converting the optical signal S _P transmitted in (1) is monitored. Therefore, according to the configuration of this example, the effect obtained by the first and second embodiments can be obtained. Further, according to the configuration of this example, except that the optical fibers 32 ₁ and 32 ₂ are provided, the output of the optical switches 35 ₁ and 35 ₂ and the switching signal S _SC is added to the configuration of the security system shown in FIG. It is possible to detect whether an abnormality has occurred in the first floor part of the building or an abnormality has occurred in the second floor part by simply adding the control unit 33 having a port and a program for executing the processing shown in FIG. it can.

Embodiment 4 FIG.
FIG. 8 is a block diagram showing a configuration of a crime prevention system according to the fourth embodiment of the present invention. In FIG. 8, parts corresponding to those in FIG. In the crime prevention system shown in FIG. 8, a crime prevention device 41 is newly provided instead of the crime prevention device 1 shown in FIG. This crime prevention device 41 is replaced with an optical time domain reflectometer (OTDR) 42 and an optical fiber 43 in place of the light source 11, optical fiber 12, light receiving element 13, control unit 14 and alarm unit 15 constituting the crime prevention device 1 shown in FIG. A control unit 44, a storage unit 45, and an alarm unit 46 are newly provided.

The OTDR 42 enters pulsed light into the optical fiber 43, detects the power of backscattered light generated at a scattering point such as a disconnection or a crack existing in the optical fiber 43, and a waveform (OTDR) of the power of the backscattered light with respect to time. The optical fiber 43 is evaluated by measuring the waveform. The time difference between the transmission time of the pulsed light and the reception time of the backscattered light is a delay time until the light component of the pulsed light transmitted through the optical fiber 43 is backscattered and returned. Corresponds to the position of the optical fiber 43. Therefore, the OTDR 42 measures the OTDR waveform of the power of the backscattered light and evaluates the presence / absence of the abnormality in the OTDR waveform and the delay time at which the abnormality has occurred, thereby determining the presence / absence of the abnormality and the abnormality occurrence position in the optical fiber 43. Evaluation is performed, and position data D _E related to the position where the abnormality has occurred is supplied to the control unit 44. For details of the configuration, function, and operation of the OTDR 42, refer to, for example, Japanese Patent Laid-Open No. 2003-294576.

As shown in FIG. 8, the optical fiber 43 has adhesives 48 _{1 to} 48 on the indoor side of a plurality of plate glasses 47 _{1 to} 47 ₆ attached to a door or window of a building such as a house or office of a customer. ₆ is attached. The control unit 44 includes a CPU, a DSP, a sequencer, and the like. When the position data D _E is supplied from the OTDR 42, the control unit 44 determines that some abnormality such as the intrusion of a thief has occurred in the building, and the input end of the optical fiber 43 stored in the storage unit 45 in advance. The location where an abnormality has occurred is specified with reference to a table relating to the position of the distance from the plate and the positions of the glass plates 47 _{1 to} 47 ₆ . Then, the control unit 44 supplies the first alarm signal S _A1x indicating the occurrence of the abnormality at the specified abnormality occurrence location to the alarm unit 34 and the second indicating the occurrence of the abnormality at the specified abnormality occurrence location to the communication unit 16. Supply alarm signal S _A2x . Further, the control unit 44 stops the supply of the first alarm signal S _A1x or S _A1x to the alarm unit 46 based on the release signal S _C supplied from the release button 17.

The storage unit 45 is a semiconductor memory such as a RAM, a ROM, or a flash memory, an FD drive to which an FD is mounted, an HD drive to which an HD is mounted, an MO disk drive to which an MO disk is mounted, a CD-ROM, a CD-ROM R, a CD-RW, a DVD-ROM, a DVD-R, a DVD-RW, etc. The storage unit 45 stores the above table and is used by the control unit 44 for work. The alarm unit 46 includes, for example, an acoustic alarm device, an indicator lamp such as an LED or a light bulb. Based on the first alarm signal S _A1x , the acoustic alarm device corresponds to, for example, an alarm of a certain tone color or, for example, the value x (see FIG. 10) of the first digit of the first alarm signal S _A1x . When the value of the subscript in the first digit is “2”, the occurrence of the abnormality is notified by a voice message specifying the abnormality occurrence location such as “An abnormality has occurred in the living room”. On the other hand, based on the first alarm signal S _A1x , the indicator lamp notifies the occurrence of abnormality by continuous lighting or blinking lighting. The alarm unit 46 is not only installed at a predetermined location in the house or office in order to notify the customer or the related person inside the building of the occurrence of the abnormality, but also notifies the neighbor of the occurrence of the abnormality in the house or office. You may install in the outer wall etc. of the said house or office in order to alert | report.

Next, the operation of the security system configured as described above will be described with reference to the flowchart shown in FIG. In the installation state shown in FIG. 8, when power is turned on to the main body of the crime prevention device 41, the control unit 44 performs initial setting of each part of the device. This initial setting is, for example, clearing various registers secured in the working RAM constituting the storage unit 45. And the control part 44 progresses to step SP31 shown in FIG. In step SP31, the control unit 44 creates, for example, the table shown in FIG. 10 according to the operation by the installer of the security device, and then proceeds to step SP32. The installer actually measures the distance from the input end of the optical fiber 43 to each of the glass plates 47 _{1 to} 47 ₆ , operates an operation unit (not shown), and has a door or window to which each of the glass plates 47 _{1 to} 47 ₆ is attached. When the type of the room and the distance of the optical fiber 43 in each of the glass plates 47 _{1 to} 47 ₆ are input, the control unit 44 executes this table creation process, and the input type of the room and each of the glass plates 47 _{1 to} 47 _6. A table composed of the distances of the optical fibers 43 is created and stored in a predetermined storage area of the storage unit 45.

FIG. 10 shows an example of a table configuration. In this example, the glass plates 47 _{1 to} 47 ₆ have the same shape and a width of 1 m. In the entrance, the glass sheet 47 ₁ is attached to the front door. The glass sheet 47 ₁ is closer to the input end of the optical fiber 43 (hereinafter referred to as the first end; the same applies to the other glass sheets 47 _{2 to} 47 ₆ ) at a distance of 3 m from the input end of the optical fiber 43. The side far from the input end of the optical fiber 43 (hereinafter referred to as the second end; the same applies to the other glass plates 47 _{2 to} 47 ₆ ) is at a distance of 4 m from the input end of the optical fiber 43. . Similarly, a glass sheet 47 ₂ is attached to one of the windows in the living room. The glass sheet 47 ₂ has a first end at a distance of 7 m from the input end of the optical fiber 43 and a second end at a distance of 8 m from the input end of the optical fiber 43.

One bedroom windows, plate glass 47 ₃ is mounted. The glass sheet 47 ₃ has a first end at a distance of 10 m from the input end of the optical fiber 43 and a second end at a distance of 11 m from the input end of the optical fiber 43. One of kitchen window, plate glass 47 ₄ are attached. The glass sheet 47 ₄ has a first end at a distance of 13 m from the input end of the optical fiber 43 and a second end at a distance of 14 m from the input end of the optical fiber 43. One of the bath of the window, the glass sheet 47 ₅ is attached. Plate glass 47 ₅ has its first end situated 16m from the input end of the optical fiber 43, the second end is at a distance from the input end of 17m of optical fiber 43. One of the toilet window, plate glass 47 ₆ is attached. The glass sheet 47 ₆ has a first end at a distance of 18 m from the input end of the optical fiber 43 and a second end at a distance of 19 m from the input end of the optical fiber 43.

In step SP32, the control unit 44 determines whether or not the position data D _E is supplied from the OTDR 42. When the determination result is “NO”, the control unit 44 repeats the same determination. Since no abnormalities such as cracks and cracks have occurred in all of the glass plates 47 _{1 to} 47 ₆ , the OTDR waveform in FIG. As shown, the backscattered light power gradually decreases according to the distance of the optical fiber 43, so the OTDR 42 does not detect any abnormality and does not supply the position data D _E to the control unit 44. Therefore, the control unit 44 repeats the process of step SP32.

Then, for example, to thieves or the like from entering to the housing, a portion of the in which the glass sheet 47 ₄ is attached to one of the kitchen window was beaten by a hammer or a bar or the like, to generate a crack in the glass sheet 47 ₄ it allows the disconnection to the optical fiber 43 affixed to (distance d ₀ (about 13.5 m) apart portions. from the input end of the optical fiber 43) that portion near the plate glass 47 ₄ occurs. As a result, backscattered light is generated due to the disconnection, so the OTDR 42 measures the OTDR waveform of the power of the backscattered light (see the solid line b in FIG. 11), and the presence / absence of abnormality in the OTDR waveform occurs. By evaluating the delay time, the presence / absence of an abnormality in the optical fiber 43 and the abnormality occurrence position are evaluated, and position data D _E regarding the abnormality occurrence position (distance d ₀ (about 13.5 m)) is supplied to the control unit 44. . Thereby, the determination result in step SP32 is “YES”, and the control unit 44 proceeds to step SP33.

In step SP33, the control unit 44 starts timing of a hard timer or a program timer provided therein, determines that some abnormality such as a thief intrusion has occurred in the building, and stores it in the storage unit 45 in advance. The location where an abnormality has occurred is specified with reference to the table (see FIG. 10). In this case, since the position data D _E relates to the distance d ₀ (about 13.5 m), the control unit 44 specifies that the abnormality occurrence location is the kitchen. Then, the control unit 44 _supplies the first alarm signal S _A1x (in this case, the first alarm signal S _A14 ) indicating the occurrence of the abnormality at the specified abnormality occurrence location (in this case, the kitchen) to the alarm unit 34. Thereafter, the process proceeds to step SP34. Based on the first alarm signal S _A1x (in this case, the first alarm signal S _A14 ), the alarm unit 46, for example, _generates an alarm of a certain tone or, for example, the first alarm signal S _A1x (now In the case of the first alarm signal S _A14 ), the first digit subscript value “x” (in this case, “4”) corresponds to an abnormality such as “An error has occurred in the kitchen”. The occurrence of abnormality is notified by a voice message specifying the location. On the other hand, the indicator lamp notifies the occurrence of an abnormality by continuous lighting or blinking lighting based on the first alarm signal S _A1x (in this case, the first alarm signal S _A14 ). Therefore, the customer, the person concerned, or a neighbor in the building can recognize the occurrence of an abnormality such as a thief intrusion in the kitchen.

In step SP34, the control unit 44, or shorter than the set elapsed time T _P obtained from the hard timer or program timer was started counting in the process of step SP33 is preset time T _S (e.g., 1 minute) or not Determine whether. If this determination is “YES”, the control unit 44 proceeds to step SP35. In step SP35, the control unit 44 determines whether or not the release signal S _C is supplied from the release button 17. If this determination is “NO”, the control unit 44 returns to step SP34.

On the other hand, if the determination result in step SP35 is “YES”, that is, if the release signal S _C is supplied from the release button 17, the control unit 44 proceeds to step SP36. In step SP36, the control unit 44 stops supplying the first alarm signal S _A1x (in this case, the first alarm signal S _A14 ) to the alarm unit 46, and then returns to step SP32. As a result, the alarm unit 46 stops the output of the alarm or voice message based on the supply stop of the first alarm signal S _A1x (in this case, the first alarm signal S _A14 ), while the indicator lamp Also goes off. The reason for performing the processes in steps SP34 to SP36 is the same as in the case of the first embodiment.

On the other hand, if the determination result in step SP34 is “NO”, that is, the elapsed time T _P is equal to or longer than a preset set time T _S (for example, 1 minute), and the release button 17 is not operated. If the release signal S _C is not supplied, the control unit 44 proceeds to step SP37. In step SP37, the control unit 44 supplies the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ) indicating the occurrence of abnormality to the communication unit 16, and then ends the series of processes. Accordingly, the communication unit 16 transmits the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ) to the security company client 3 via the network 2 using a predetermined protocol, and the network 2 and the base station 4 to the portable terminal 5 possessed by the customer or the related person.

Therefore, in the portable terminal 5 that has received the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ), the control unit performs the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ). Based on the above, the notification unit is controlled to notify the owner of the portable terminal 5 that an abnormality has occurred in a specific part of the house (in this case, the kitchen). On the other hand, in the security company client 3 that has received the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ), the control unit executes a security monitoring process and an alarm notification process. That is, the control unit of the security company client 3 sends the second alarm signal S _A2x (in this case, the second alarm signal S _A24 ) together with the name of the customer who is the resident of the house who has transmitted the second alarm signal S _A2x ( _currently the second alarm signal S _A24 ) In this case, the security staff stationed at the headquarters or sales office of the security company is notified that an abnormality has occurred in the kitchen). In addition, the control unit of the security company client 3 uses a third alarm signal S _A3x (in this case, indicating that an abnormality has occurred in the specific location (in this case, the kitchen) of the customer's house in the security vehicle terminal 6. The third alarm signal S _A34 ) is transmitted to the guard car terminal 6 via the network 2 and the base station 4 using a predetermined protocol.

Thereby, in the guard car terminal 6 that has received the third alarm signal S _A3x (in this case, the third alarm signal S _A34 ), the control unit executes the abnormality notification process. That is, the control unit of the guard car terminal 6 controls the notification unit based on the third alarm signal S _A3x (in this case, the third alarm signal S _A34 ), and the specific part of the customer's house (in this case) , The kitchen) is informed to the security guards who are on board the security car on which the security car terminal 6 is mounted. Therefore, when the guard instructs the execution of the car navigation process to rush to the house, the control unit of the guard car terminal 6 guides to the customer's house.

Thus, according to the embodiment, together with the affixed with adhesive 48 _{1-48 6} on a plurality of glass sheets 47 _{1-47 6} one optical fiber 43, provided OTDR42, the optical fiber 43 Pulse light is incident to measure the OTDR waveform, and position data D _E related to the position where the optical fiber 43 is abnormal is supplied to the control unit 44. Based on the position data D _E , the control unit 44 specifies an abnormality occurrence position and issues an alarm to the outside. Therefore, the effects obtained in the first and second embodiments can be obtained, but other specific security measures can be taken. For example, when there is a protective wall or the like that isolates each room, the protective wall can be operated to minimize economic damage or to ensure the safety of the inside person.

Embodiment 5 FIG.
In each of the above-described embodiments, an example in which an optical fiber is attached to a plate glass that is not considered to be opened and closed with an adhesive or the like has been described, but the present invention is not limited to this. In the present invention, for example, as shown in FIG. 12, curled portions 51a, 51b, 51c,... Are formed in each portion of the optical fiber 51, and portions other than the curled portions 51a, 51b, 51c,. You may affix on the glass plates 53 ₁ and 53 ₂ attached to the window frame with adhesives 54 ₁ and 54 ₂ . In this case, since the fiber diameter of the optical fiber 51 is very fine, for example, 250 μm, the optical fiber 51 is broken even if the pasted portion of the optical fiber 51 or the curled portions 51a, 51b, 51c,. There is little risk of cracks. Thus, according to the fifth embodiment, the present invention can be applied to windows and doors that are generally opened and closed.

The embodiment has been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiment, and there are design changes and the like without departing from the scope of the invention. Are also included in the present invention.
For example, in each of the above-described embodiments, an example in which the optical fiber is attached to the indoor side of the plate glass has been shown, but the present invention is not limited to this, and the optical fiber may be attached to the outdoor side. This is because when an intruder such as a thief tries to peel off the optical fiber attached to the glass plate, the optical fiber is bent, cracked, or disconnected, and radiation loss and transmission loss increase. Because.
In the first to third embodiments described above, an example in which continuous light is incident on an optical fiber has been described. However, the present invention is not limited to this, and pulsed light may be incident. In this case, a pulse generator for generating an electrical pulse signal and an optical modulator for generating pulsed light by modulating the light emitted from the light source 11 with the generated pulse signal are required.
Further, in the above-described third embodiment, the example in which the optical fibers 32 ₁ and 32 ₂ are provided in the first floor portion and the second floor portion of one building is shown, but the present invention is not limited to this, and a plurality of optical fibers are provided. It may be provided for each building in the building.
Further, in each of the above-described embodiments, an example in which an optical fiber is pasted on a plate glass already attached to a door or window has been shown. However, the present invention is not limited to this, and a plate glass in which an optical fiber is embedded in advance is used. You may comprise so that it may attach to a window.

In each of the above-described embodiments, the security company client 3 and the guard car terminal 6 are configured so that the former is installed in the head office or a sales office and the latter is installed in the guard car. However, the present invention is not limited to this, and both may have the same function. If comprised in this way, the security vehicle terminal 6 can be accessed directly from the crime prevention apparatus 1, and the situation can be dealt with more promptly.
In each of the above-described embodiments, the mobile terminal 5 is an example of a mobile phone or PHS. However, the present invention is not limited to this, and a notebook type, palm type, or pocket type that can be connected to a mobile phone or PHS. Or a personal computer such as a personal digital assistant (PDA).
In each of the above-described embodiments, an example is shown in which a contract is made with a security company and a security guard visits a customer's house or office when an abnormality occurs in the customer's house or office. If only the security device 1 is provided as a system and the customer or the person concerned is out of the house or office knows by the notification by the mobile terminal 5 that he / she is in the vicinity of the customer's house or office At least one relative or acquaintance, an employee at a nearby sales office (hereinafter referred to as a relative, etc.), or a police station, etc., should be contacted by another telephone, such as a public telephone, and asked to visit a residence or office It may be configured. In this case, if the relative has a computer, a security officer resident in the above-mentioned sales office can be obtained by installing a program having substantially the same function as the security company client 3 on the computer. And can play a role similar to that of a guard on board a guard car. The computer possessed by the relative is not limited to the desktop type, but is a portable terminal carried by a customer or a related party, that is, a notebook type, palm type, pocket type computer or the like that can be connected to a mobile phone or PHS. Alternatively, a PDA or the like may be used. However, the security company client 3 may also be this type of mobile terminal. Similarly, if the at least one relative or the like has a vehicle, and the vehicle can be equipped with a terminal having the same function as the guard vehicle terminal 6, the security for boarding the above-mentioned guard in the relative or the like. Can play a role similar to that of a member. In this case, since a contract with a security company is unnecessary, the situation can be dealt with more inexpensively.

Moreover, in each above-mentioned embodiment, although the example which uses this invention for crime prevention was shown, it is not limited to this. For example, when the optical fiber is made of plastic such as PMMA, the transmission loss of the optical signal is increased because the optical fiber is melted by heat at a relatively low temperature generated by a fire, and the present invention increases the optical signal transmission loss. It can also be applied to fire detection.
In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

It is a block diagram which shows the structure of the crime prevention system which is Embodiment 1 of this invention. It is a flowchart for demonstrating an example of operation | movement of the control part of a crime prevention apparatus. Is a diagram illustrating an example of a change of the voltage value V _D of the electric signal S _E. It is a key map for explaining an example of operation of a security system. It is a conceptual diagram for demonstrating the crime prevention system which is Embodiment 2 of this invention. It is a block diagram which shows the structure of the crime prevention apparatus which is Embodiment 3 of this invention. It is a flowchart for demonstrating an example of operation | movement of the control part of a crime prevention apparatus. It is a block diagram which shows the structure of the crime prevention system which is Embodiment 4 of this invention. It is a flowchart for demonstrating an example of operation | movement of the control part of a crime prevention apparatus. It is a figure which shows an example of a structure of a table. It is a figure which shows an example of an OTDR waveform. It is a conceptual diagram for demonstrating the crime prevention system which is Embodiment 5 of this invention.

Explanation of symbols

1,31,41 Security device, 2 network, 3 security company client (external alarm means), 4 base station, 5 mobile terminal (external alarm means), 6 guard car terminal (external alarm means), 7 antenna, 11 light source, 12, 23, 32 ₁ , 32 ₂ , 43, 51 Optical fiber, 13 Light receiving element, 14, 33, 44 Control unit, 15, 34, 46 Alarm unit, 16 Communication unit, 17 Release button, 18, 24 _{1 to} 24 _6, 36 ₁₁ to 36 _16, 36 ₂₁ to 36 _26, 47 ₁ to 47 _6, 53 _1, 53 ₂ glass sheets, 19 and 25 _to 253 _6, 48 ₁ to 48 _6, 54 _1, 54 ₂ adhesive, 21 Crack, 22 disconnection, 23a input end, 23b output end, 33 control unit, 35 ₁ , 35 ₂ optical switch, 42 OTDR, 45 storage unit, 51a, 51b, 51c curl unit, 52 aluminum sash.

Claims (7)

  A crime prevention device characterized by detecting a crack or a crack of the glass based on a change in an optical signal transmitted through an optical fiber provided in glass attached to a door or window of a building and issuing an alarm. Optical fiber in glass attached to the doors and windows of the building,
A light source for entering an optical signal into the optical fiber;
A light receiving element that converts an optical signal emitted from the optical fiber into an electrical signal;
A security device, comprising: a control unit that detects a break or a crack of the glass based on a change in the electrical signal and issues an alarm. The optical fiber is provided for each floor of the building or for each ridge of the plurality of buildings,
A first optical switch that switches and enters the optical signal emitted from the light source into a plurality of the optical fibers;
A second optical switch that switches the plurality of optical signals output from the plurality of optical fibers and enters the light receiving element;
The control unit alternately switches the first and second optical switches, and based on the change of the plurality of electrical signals corresponding to the plurality of optical fibers, the corresponding optical fiber of the glass provided with the corresponding optical fiber The crime prevention device according to claim 1 or 2, wherein a crack or a crack is detected and an alarm is issued for the corresponding floor or ridge. Optical fiber in glass attached to the doors and windows of the building,
Pulse light is incident on the optical fiber, an OTDR waveform of backscattered light emitted from the optical fiber is measured to evaluate an abnormality occurrence position in the optical fiber, and position data relating to the abnormality occurrence position is output. OTDR,
A security device, comprising: a control unit that detects a crack or a crack of the glass based on the position data and issues an alarm.   The crime prevention device according to any one of claims 1 to 4, wherein the optical fiber is provided across a plurality of the glasses respectively attached to a plurality of doors and windows.   The crime prevention device according to any one of claims 1 to 5, wherein the optical fiber is embedded in the glass. A crime prevention device according to any one of claims 1 to 6;
An crime prevention system comprising: external alarm means for issuing an alarm to the outside based on an alarm signal from the crime prevention device.

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