JP2006285863A - Locking monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking monitoring device for monitoring a locking state in a non-contact manner, allowing centralized control without requiring a battery power source in a sensor part, wired supply of power, or signal wiring to the side of a window, with low construction cost. <P>SOLUTION: A sensor part 4 comprises a magnet 1 attached to a window frame or glass window, a reed switch 2 attached to the glass window or window frame and driven by magnetic force of the magnet 1, and a passive and RF type ID tad 3 for returning a code including a switch signal of the reed switch as response signal information. A monitoring part 5 is placed in an indoor position communicable with the ID tag 3, and determines the locking state, based on the presence of a response signal from the ID tag 3 and the content of information sent therefrom as the response signal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  An object of the present invention is to provide a door tightness monitoring device that monitors the tightness of windows and doors.

  Conventionally, a door switch such as a window is often used to detect a closed door, and a security sensor using a combination of a reed switch and a magnet is often used. In this case, the magnet is attached to a fitting such as a window or door that is opened and closed, and the fitting is closed. In order to take out the operation signal of the reed switch, it is necessary to energize the reed switch and to wire the signal line.

  On the other hand, a window glass breakage detection device using an ID (IC) tag is provided as a sensor for detecting breakage of a window glass (for example, Patent Document 1).

In this destruction detection device, an ID tag is attached to the window glass side, a monitoring device as a tag reader is arranged on the indoor side of the window rail, and communication is performed between the ID tag and the monitoring device, and communication from the ID tag is interrupted. When the window glass is broken, it is detected that the window glass is broken.
Japanese Patent Laying-Open No. 2005-4316 (paragraph numbers 0016, 0017)

  By the way, when a thief enters through a window locked with a crescent lock, it makes a loud noise when the entire glass window is broken, so it is normal to cut out or break a part of the window glass near the crescent lock. .

  On the other hand, the destruction detection device disclosed in Patent Document 1 is required for detection operation that the ID tag comes out of the communication area with the monitoring device. Window glass using tempered glass is a premise, so it is not suitable for ordinary households that do not use tempered glass.

  In addition, it is necessary to attach a monitoring device to each window. Therefore, it is necessary to wire a power supply line to each monitoring device, and when centralized management is performed at one place, it is necessary to provide a management device in addition to the monitoring device. There was a problem that the cost was high as a result.

 The present invention has been made in view of the above-mentioned points. The object of the present invention is to monitor a door-tight state in a non-contact manner by a sensor unit using a passive and RF-type ID tag. Provides a close-up monitoring device that does not require a battery power supply or supply power by wire, does not require a signal line to the window side, can be easily managed centrally, and is low in construction cost There is.

  In order to achieve the above-mentioned object, the invention of claim 1 responds with a contact means that opens and closes according to a door-tight state of a fitting that can be freely opened and closed of a building opening, and a code including an opening / closing signal of the contact means. A sensor unit consisting of a passive and RF ID tag that returns as signal information, an activation signal that supplies power with an unmodulated carrier wave to the ID tag, and an information acquisition signal after transmitting the activation signal A monitoring unit that acquires information from the ID tag by a response signal, and the monitoring unit is disposed at an indoor position where the ID tag can communicate with the presence / absence of a response signal from the ID tag and the ID tag The door lock state is determined based on the information content sent as a response signal from.

  According to the first aspect of the present invention, it is possible to determine the door-tight state by the monitoring unit based on the content of the response signal signal of the ID tag consisting of the code including the contact means opening / closing signal, thereby forgetting to close the door or illegal intrusion. It can be detected, and when there is no response signal from the ID tag, it can detect the abnormality of the sensor part, and as a result, it is possible to monitor the state of the door tightly and enhance the crime prevention effect, and the ID tag Since the power supply can be supplied from the monitoring unit in a non-contact manner, there is no need for troublesome power supply replacement and power supply wiring, and the ID tag information can be acquired in a non-contact manner. This eliminates the need for signal lines from the sensor unit, makes it easy to centrally monitor multiple locations with a single monitoring unit, and provides a door tightening monitoring device with low construction costs. Door can be.

  In the invention of claim 2, in the invention of claim 1, the joinery is a glass window, and one of the reed switch and the ID tag constituting the contact means and the magnet for driving the reed switch is used as the glass window. The other side is attached to the window frame side, and the monitoring unit judges the open / closed state of the glass window based on the information content of the response signal from the ID tag as the judgment of the door-tight state.

  According to invention of Claim 2, it can detect in the opening-and-closing state of a glass window, and can detect forgetting a door tight or invasion from a glass window reliably.

  In the invention of claim 3, the reed switch and the ID tag are attached to the window glass of the glass window, the magnet is attached to the window frame, and the monitoring unit receives a response signal from the ID tag. It is characterized by judging that the window glass or the sensor part is abnormal.

  According to the invention of claim 3, when the window glass is broken and the ID tag is broken or unable to respond, the failure of the ID tag of the sensor unit or the reed switch is monitored together with the closed state of the glass window. Can be detected at the part.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the reed switch constituting the contact means or the reed switch is magnetically attached to a crescent body of a crescent lock that locks the joinery in a state where the joinery is closed. One of the magnets to be driven is attached, and the other is attached to a portion where the crescent lock of the crescent lock is provided, and the monitoring unit determines whether the door is locked or not by locking the crescent lock according to the information content of the response signal from the ID tag. The unlocking state is judged.

  According to the invention of claim 4, the discovery of forgetting to lock the crescent lock or the discovery of an intruder who breaks the window glass for unlocking can be made and security measures can be improved.

  According to the present invention, the monitoring section can determine the state of the door closing based on the information content of the response signal signal of the ID tag including the code including the opening / closing signal of the contact means, thereby detecting forgetting the door closing or illegal intrusion. In addition, when the response signal from the ID tag disappears, it is possible to detect an abnormality of the sensor unit, and as a result, it is possible to monitor the state of the door tightly and improve the crime prevention effect, and the power supply to the ID tag is Since it can be supplied in a non-contact manner from the monitoring unit, there is no need for complicated power supply such as replacement of battery power and wiring for the power supply, and in addition, the ID tag information can be acquired in a non-contact manner from the sensor unit. No signal line is required, and it is easy to centrally monitor multiple locations with a single monitoring unit. As a result, it is possible to provide a close-up monitoring device with low construction costs. There is a cormorant effect.

  Embodiments of the present invention will be described below.

(Embodiment)
As shown in FIG. 1, the door tightness monitoring apparatus according to the present embodiment includes a magnet 1, a reed switch 2, a sensor unit 4 including an ID tag 3, and a monitoring unit 5 having a tag reader function for the ID tag 3. Is done.

  Here, the ID tag 3 used for the sensor unit 4 is connected between a tag control IC 30 that performs signal processing, the antenna coil 1 connected to the antenna terminal of the tag control IC 30, and the coil connection terminals C 1 and C 2 of the tag control IC 30. The power supply unit of the tag control IC 30 is constituted by the charged electric charge, and the antenna coil 31 and the capacitor 32 constituting a resonance circuit. The tag control IC 30 includes four ID setting terminals in1 to in4, and returns four bits (16 types of 0000 to 1111) of ID information determined by input logical values of the four ID setting terminals in1 to in4 as response signals. The reed switch 2 is connected to one of the four ID setting terminals in1 to in4, the switch SW1 to SW3 is connected to the remaining three in1 to in3, and the three switches SW1 to SW3 are connected. By fixing the state, the tag control IC 30 fixes the upper 3 bits, and the lowest 1 bit returns a type of ID information determined by the on / off state of the reed switch 2 as a response signal. The information specifying the ID tag 3 is 3 bits, and the state of the reed switch 2 is indicated by the lower 1 bit.

  The ID tag 3 configured as described above is housed in a housing together with the reed switch 2 and the switches SW1 to SW3 and can be handled as one component as will be described later.

  The monitoring unit 5 includes an ID transmission / reception unit 50, a signal processing unit 51, an alarm / display unit 52, and a power supply unit 53. The ID transmission / reception unit 50 is connected to the ID tag 3 of the sensor unit 1. It comprises modulation / demodulation means and oscillating means for communication, and transmits a start signal and a data acquisition signal to ID 3 at regular intervals with a frequency corresponding to the resonance frequency of ID tag 3 under the control of signal processing unit 51. An application signal is received from the ID tag 3 in response to the data acquisition signal, and information sent as the application signal is passed to the signal processing unit 51.

  The signal processing unit 51 has a function of determining the state of the sensor unit 1 based on the presence / absence of a response signal from the ID tag 3 and the content of ID information of the response signal, and an alarm / display unit based on the determination content 52 is provided with a control function for instructing the display operation and warning operation to 52 and a warning switch SW for setting / resetting the warning state of the apparatus. It is assumed that the alarm switch SW is provided with a switch concealed outside in addition to a switch that can be operated indoors.

  Next, a specific example using the door lock monitoring device of the present invention will be described.

Example 1
This example is an example used to monitor the door tightness of a door as a fitting attached to the entrance of a building so that it can be opened and closed. For example, in the case of an outward opening, as shown in FIG. The magnet 1 of the sensor unit 4 is attached to the upper frame of the door frame 11 that faces the magnet 1 when the door 10 is closed. A reed switch 2 in the housing 12 is turned on by the magnetic force of the magnet 1 when the door 10 is closed. In other words, the fourth bit of the ID tag 3 has a logical value of “0” when the door 10 is opened to a position where the reed switch 2 cannot be turned on by the magnetic force of the magnet 1, and conversely when the door 10 is closed. When the reed switch 2 is turned on by the magnetic force of the magnet 1, the logical value becomes “1”, and the open / closed state of the door 10 is indicated by this logical value.

  On the other hand, if the monitoring unit 5 that monitors the state of the sensor unit 4 is arranged at an appropriate position where communication with the ID tag 3 of the sensor unit 4 is possible, the installation of the door lock monitoring device is completed.

  Next, the operation of the door tightness monitoring device in this example will be described.

  First, the monitoring unit 5 transmits an activation signal and a data acquisition signal from the ID transmission / reception unit 50 to the ID tag 3 at regular intervals even if the alert state is set or reset.

  Therefore, when the ID tag 3 of the sensor unit 4 receives an unmodulated start signal sent by a carrier wave corresponding to the resonance frequency, the capacitor 32 is charged with the electric power, and the tag control IC 30 operates with this charged charge as a power source. When the data acquisition signal is received and demodulated, the state of the ID setting terminals in1 to in4 is taken in and the 4-bit ID information is returned to the monitoring unit 5 as a modulated wave.

  Since the communication is performed between the monitoring unit 5 and the ID tag 3 in this way, the signal processing unit 51 monitors the open / closed state of the door 10 with the logical value of the fourth bit of the ID information. The instruction based on the alarm / display unit 52 is always sent. If the alert state is reset, an instruction to display the current open / close state of the door 10 is sent to the alarm / display unit 52 to display the open / close state of the door 10. Thereby, the resident can know the open / closed state of the door 10.

  On the other hand, when the warning state is set, when the signal processing unit 51 determines that the door 10 is opened, the signal processing unit 51 instructs the alarm / display unit 52 to issue an alarm, and issues the alarm together with the display. For example, it is possible to cope with a case where a locked door lock is illegally unlocked and an intruder opens the door 10.

  When setting the warning state indoors when going out, it takes a certain time from the setting operation to take into account the time from opening the door 10 after the warning switch SW is set, the resident to go outside and closing the door 10 again. Delayed to enter the alert state. Further, when returning home, the warning state can be reset by operating a warning switch concealed outdoors to the reset side, so that no warning is issued even if the door 10 is opened from the outside.

  Although FIG. 2 shows the case where the door is opened outward, it is needless to say that the door can also be handled.

Example 2
Example 1 dealt with the door 10, but this example corresponds to the glass window. As shown in FIG. 3, the magnet 1 of the sensor unit 4 is attached to the window frame 13 side, and the ID tag 3 And the housing | casing 12 which equipped the reed switch 2 is attached to the window glass 15 of the window body 14. FIG. The mounting position of the housing 12 is a position where the reed switch 2 in the housing 12 is turned on by the magnetic force of the magnet 1 when the window body 14 is closed.

  Thus, in this example as well, in the same way as in the case of the door 10 of Example 1, the monitoring of the opening / closing of the window body 14 is monitored by the monitoring unit 5 so that the door tightness of the window body 14 can be monitored.

  Further, when the window glass 15 of the closed window body 14 is broken and the casing 12 attached to the window glass 15 falls on the floor, the communication between the ID tag 3 and the monitoring unit 5 is maintained. Since the reed switch 2 is not turned on by the magnet 1 in the state, the signal processing unit 51 determines that the window 14 has been opened, and issues an alarm from the alarm / display unit 52 in the alarm set state. When communication between the ID tag 3 and the monitoring unit 5 can no longer be maintained, the signal processing unit 51 determines that the sensor unit 4 is abnormal and issues an alarm notification to the alarm / display unit 52 to display the alarm / display unit. An alarm is issued from the display unit 52.

  Even when the window glass 15 is broken in this way, it is possible to prevent illegal intrusion by issuing an alarm.

Example 3
In Example 2 above, an alarm is issued when the window 14 is opened or the window glass 15 is broken. Generally, however, an empty nest breaks a part of the window glass to unlock the crescent lock, and then Often, the windows are opened to enter the room. Therefore, in this example, the lock / unlock of the crescent lock is detected and the door lock is monitored.

  In this example, the magnet 1 is attached to the crescent body 16a of the crescent lock 16 attached to one window body 14 of the two sliding window bodies 14 and 14, and the vertical direction of the other window body 14 to which the crescent receiver 15b is attached. When the casing 12 with the ID tag 3 and the reed switch 2 is attached to the crosspiece, and the crescent body 16a is locked to the crescent receiver 15b to be locked, the reed switch 2 is turned on by the magnetic force of the magnet 1, and the crescent When the state 15 is unlocked, the drive by the magnetic force of the magnet 1 is released, and it returns to the off state.

  Thus, the signal processing unit 51 of the monitoring unit 5 monitors the locking / unlocking of the crescent lock 16 by the logical value of the fourth bit of the ID information sent as a response signal of the ID tag 3, and in a warning reset state, The resident is informed of forgetting to lock the crescent lock 16 on the alarm / display section 52, and in the alarm set state, when the crescent lock 16 is unlocked, an alarm is issued from the alarm / display section 52. Inform that there is a person trying to invade.

  Of course, the attachment position of the magnet 1 and the attachment position of the reed switch 2 and the ID tag 3 in each example may be changed.

  Further, in each example, the door tightness monitoring device monitored by the monitoring unit 5 for one sensor unit 4 is shown, but a plurality of windows and doors are provided in the same room, and the sensor unit 4 is attached to these windows and doors. In this case, each sensor unit 4 is identified by changing the upper 3 bits of the ID information of each ID tag 3, or each sensor unit 4 can be identified by changing the resonance frequency. Thus, the state monitoring of the plurality of sensor units 4 may be performed by one monitoring unit 5.

  Note that the window body to be locked by the crescent lock includes a flip-up type window in addition to the two sliding windows, and it is needless to say that this example can be applied to the crescent lock corresponding to these windows.

(A) is the block diagram of one Embodiment, (b) is the structure of the monitoring part used for one Embodiment. It is an attachment state explanatory view of the sensor part of example 1 of one embodiment. Example 1 is shown. It is an attachment state explanatory view of the sensor part of example 2 of one embodiment. It is an attachment state explanatory view of the sensor part of example 3 of one embodiment.

Explanation of symbols

1 Magnet 2 Reed Switch 3 ID Tag 30 Tag Control IC
31 antenna coil 32 capacitor 4 sensor unit 5 monitoring unit 50 ID transmission / reception unit 51 signal processing unit 52 alarm / display unit 12 housing in1 to in4 ID setting terminals SW1 to SW3 switch

Claims (4)

Sensor comprising a contact means that opens and closes according to the door-tight state of a fitting that can be freely opened and closed in a building opening, and a passive and RF type ID tag that returns a code including an opening / closing signal of the contact means as response signal information And
An activation signal that supplies power with an unmodulated carrier wave to the ID tag and a monitoring unit that transmits an information acquisition signal after transmission of the activation signal and acquires information from the ID tag by a response signal;
The monitoring unit is arranged at an indoor position where communication with the ID tag is possible, and judges whether the door is closed based on presence / absence of a response signal from the ID tag and information content sent as a response signal from the ID tag A door lock monitoring device characterized by: The joinery is a glass window, and one of the reed switch and the ID tag constituting the contact means and the magnet for driving the reed switch is attached to the glass window, the other is attached to the window frame side, and the monitoring unit is 2. The door tightness monitoring device according to claim 1, wherein as the judgment of the door tightness state, the open / closed state of the glass window is judged based on information content of a response signal from the ID tag. The reed switch and the ID tag are attached to the window glass of the glass window, the magnet is attached to the window frame, and the monitoring unit is abnormal in the window glass and sensor unit when a response signal from the ID tag is not received. The door tightness monitoring device according to claim 2, characterized in that: Attach one of the reed switch and ID tag constituting the contact means to the crescent main body of the crescent lock that locks the joinery in a state in which the joinery is closed, or the magnet that drives the reed switch with magnetic force, The crescent lock is attached to a portion provided with a crescent receptacle, and the monitoring unit determines the locked / unlocked state of the crescent lock based on the information content of the response signal from the ID tag as the door lock state determination. The door tightness monitoring device according to claim 1.

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