JP4671734B2 - Crime prevention sensor and intercom device with crime prevention function provided with the same - Google Patents

Description

  The present invention relates to a security sensor and an intercom device with a security function including the same.

  Conventionally, as a dwelling unit intercom system, an intercom call is not only performed between an intercom main unit installed in a dwelling unit and a doorphone sub unit installed outside, but a security sensor is arranged on a window or door of the dwelling unit. Some of them have a security function that allows the intercom master to monitor the status of the security sensor. As a security sensor, a reed switch is placed on the window frame or door frame, while a magnet is placed on the window or door.When the window or door is closed, the reed switch is closed by the magnet, and the window or door is closed. In general, the reed switch opens when it is open.

This intercom master unit is set in a security mode when the security set switch is operated after the windows and doors are completely closed when going out. And in this state, when a window or door is opened by an intruder, an abnormal alarm signal is output from the security sensor. (See, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-013967

  Conventional security sensors output different signals depending on whether the windows or doors are closed or open, and detect intruders. It was necessary to close to. Therefore, for example, even when it is desired to ventilate the dwelling unit due to the presence of a pet, the window or door cannot be opened. Although measures such as opening a window with a lattice on which no security sensor is arranged can be considered, there is a risk that the lattice may be removed by an intruder and intruded into the dwelling unit.

  The present invention has been made to solve the above-described problem, and can detect an intruder by making it possible to detect that a window or door has moved from an initial state where the window or door is not closed. Security sensor, and intercom device with security function that can detect an intruder while ventilating a dwelling unit by using this and being able to set a warning in the security mode even in the initial state where the window or door is not closed The purpose is to provide.

The present invention is a security sensor that detects an abnormality by detecting that the distance between the two sensor parts has changed by two sensor parts separately arranged in the window frame and the window or the door frame and the door, A distance change detection unit capable of detecting that the distance between the two sensor units has changed from the initial state, where the window or door is not closed, and the two sensors by the distance change detection unit When it is detected that the distance between the parts has changed from the initial state, an abnormal alarm signal output means for outputting an abnormal alarm signal, and when a warning setting request is received, between the two sensor parts And confirming means for confirming whether or not the distance is within the detectable distance range of the distance change detecting means .

  Further, the present invention outputs a warning setting completion signal when the confirmation means confirms that the distance between the two sensor units is within the detectable distance range of the distance change detection means, and the confirmation means And a warning setting completion / incomplete output means for outputting a warning setting incomplete signal when it is confirmed that the distance between the two sensor units is not within the detectable distance range of the distance change detection means. It is characterized by.

  Further, the present invention is an intercom device with a security function connected to the security sensor described above, a warning setting means for receiving a warning setting input from the warning setting input means and outputting a warning setting request to the security sensor; And a signal input means for inputting the abnormal alarm signal and the warning setting completion / incomplete signal.

  This invention is a security sensor that detects an abnormality by detecting a change in the distance between the two sensor parts by two sensor parts separately arranged in the window frame and the window or the door frame and the door, A distance change detection unit capable of detecting that the distance between the two sensor units has changed from the initial state, where the window or door is not closed, and the two sensors by the distance change detection unit And an abnormal alarm signal output means for outputting an abnormal alarm signal when it is detected that the distance between the parts has changed from the initial state. Alternatively, the intruder can be detected by detecting that the door has moved.

  In addition, when a warning setting request is received, the window or door has a confirmation means for confirming whether or not the distance between the two sensor units is within the detectable distance range of the distance change detection means. It is possible to confirm in advance whether or not it is possible to detect the movement.

  When the confirmation means confirms that the distance between the two sensor units is within the detectable distance range of the distance change detection means, a warning setting completion signal is output, and the confirmation means outputs the 2 Since there is a warning setting completion / incomplete output means for outputting a warning setting incomplete signal when it is confirmed that the distance between the two sensor parts is not within the detectable distance range of the distance change detection means, It is possible to notify whether or not warning is set.

  An intercom apparatus with a crime prevention function connected to the security sensor described above, wherein the alarm setting means receives a warning setting input from the warning setting input means and outputs a warning setting request to the security sensor, and the abnormality occurrence It is equipped with a signal input means for inputting a warning signal and a warning setting completion / incomplete signal, so even in the initial state where the window or door is not closed, it can be set to a security mode, and an intruder is ventilating the inside of the dwelling unit. Can be detected. Furthermore, it can be notified whether or not the resident has been set to be alert, and can also be notified that an intruder has been detected.

  1 is a diagram showing an intercom system with a crime prevention function according to an embodiment of the present invention, and FIG. 2 is a diagram showing a schematic block diagram of the intercom system with a crime prevention function in FIG.

  In FIG. 1, reference numeral 40 denotes an interphone master unit disposed inside the dwelling unit, and reference numeral 50 denotes an intercom slave unit disposed outside. The interphone master unit 40 and the interphone slave unit 50 are connected to each other via a call line L1. Are connected so that you can make intercom calls. W is a window provided in the dwelling unit, and 1 is a security sensor arranged in the window W. The security sensor 1 includes a first sensor unit 2 and a second sensor unit 3, and the second sensor unit 3 is disposed on the window W side, and the first sensor unit 2 is separately disposed on the window frame WF side. The intercom base unit 40 is connected to the security sensor 1 via the signal line L2 and the power / signal line L3 so as to have a security function. In addition, you may make it arrange | position the security sensor 1 in the door provided in the dwelling unit, and in that case, the 2nd sensor part 3 and the 1st sensor part 2 are arrange | positioned separately on the door side and the door frame side. .

  In the interphone master unit 40 shown in FIG. 2, 41 is a security set switch as a warning setting input means, 42 is a control unit for controlling the whole interphone master unit, 43 is a first sensor unit 2 of the security sensor 1 and a signal line L2. Reference numeral 44 denotes a transmitter connected via the first sensor unit 2 of the security sensor 1 via a power / signal line L3.

  Also, 45 is a display unit, 46 is a call circuit having a microphone and a speaker, 47 is a call call line L1 connected to the call circuit 51 of the intercom 50, and is selectively connected to the call circuit 46 or the call detection circuit 48. The call switch L1 and the call detection circuit 48 are normally connected. 48 is a call detection circuit, and 49 is a transfer section.

  In the intercom 50 shown in FIG. 2, 52 is a call button, and 51 is a call circuit having a microphone and a speaker.

  When the call button 52 of the intercom handset 50 is pressed, the interphone master unit 40 detects the call operation by the call detection circuit 48 and outputs a call detection signal to the control unit 42, whereby the control unit 42 switches the call. A switching command is output to the switch 47. In response to this switching command, the changeover switch 47 switches and connects the call calling line L1 and the call circuit 46, whereby the call circuit 46 and the call circuit 51 cause the interphone master unit 40 and the interphone slave unit 50 to communicate with each other. Intercom calls can be made.

  In the security sensor 1 shown in FIG. 2, 2 is a first sensor unit, and 3 is a second sensor unit.

  In the first sensor unit 2, reference numeral 21 denotes a receiver connected to the transmitter 43 of the interphone master 40 via the signal line L 2, and reference numeral 22 denotes a receiver 44 of the interphone master 40 and the power / signal line L 3. And a transmission unit that supplies power to each unit of the first sensor unit 2. Reference numeral 23 denotes a control unit that controls the entire first sensor unit 2, reference numeral 24 denotes a coil, and reference numeral 25 denotes a voltage detection unit that detects a voltage across the coil 24. Reference numeral 26 denotes a normally open changeover switch for controlling power supply to both ends of the coil 24.

  In the second sensor unit 3, 32 is an internal battery that supplies power to each part of the second sensor unit 3, 33 is a control unit that controls the entire second sensor unit 3, 34 is a coil, and 35 is It is a voltage detector that detects the voltage across the coil 34. Reference numeral 36 denotes a normally open changeover switch for controlling power supply between both ends of the coil 34.

  The security sensor 1 has a distance change detection function capable of detecting that the distance between the two sensor units 2 and 3 has changed from the initial state, with the state where the window W is not closed as an initial state. The principle of detection is that power is always supplied to at least one coil at the time of warning setting, so that when the distance between the first sensor unit 2 and the second sensor unit 3 changes, at least the other coil has an electromotive force. Is generated, and the voltage across the coil changes.

  As for the operation of the distance change detection function, the second sensor unit 3 supplies power to the coil 34 from the internal battery 32 with the changeover switch 36 closed, and the first sensor unit 2 supplies the changeover switch. In a state in which 26 is opened, the voltage between both ends of the coil 24 is detected by the voltage detection unit 25, and the detected voltage is monitored by the control unit 23. The voltage between both ends of the coil 24 is normally no voltage, but when the window W is moved by an intruder and the distance between the first sensor unit 2 and the second sensor unit 3 changes, an electromotive force is generated in the coil 24. Therefore, a voltage is detected by the voltage detection unit 25. Therefore, the control unit 23 detects the change in the detection voltage and determines that there is an intruder. As described above, the security sensor 1 does not detect the closed state and the open state of the window W, unlike the conventional security sensor, so the window W is opened in the initial state at the time of warning setting. An intruder can also be detected as a state. In addition, the 1st sensor part 2 can detect the change of the voltage between both ends of the coil by the electromotive force which generate | occur | produced in the coil 24 also in the state which closed the changeover switch 26. FIG.

  Furthermore, the security sensor 1 changes the distance between the first sensor unit 2 and the second sensor unit 3 if the distance between the first sensor unit 2 and the second sensor unit 3 is too large in the initial state at the time of warning setting. Even if the coil 24 does not generate an electromotive force, whether or not the distance between the first sensor unit 2 and the second sensor unit 3 is within the detectable distance range in the initial state at the time of warning setting. Has a confirmation function (details will be described later).

  Next, the operation of this embodiment will be described. When the resident goes out, he / she sets the crime prevention mode vigilance. However, if the resident wants to ventilate the dwelling unit due to the presence of the pet, the crime prevention set switch 41 is turned on with the window W opened. The control unit 42 receives a warning setting input from the crime prevention set switch 41 and outputs a warning setting request, and the transmission unit 43 receives a warning setting request from the control unit 42 and receives the warning setting request from the security sensor 1. Output to 2.

  In the security sensor 1, the receiving unit 21 of the first sensor unit 2 inputs a warning setting request and outputs it to the control unit 23. When the control unit 23 receives the warning setting request, first, the control unit 23 operates a confirmation function for confirming whether or not the distance between the first sensor unit 2 and the second sensor unit 3 is within the detectable distance range.

  Here, this confirmation function will be described. As a detection principle, when the power supply to one coil is changed and the distance between the two sensor units 2 and 3 is within the detection distance range, This is based on the fact that an electromotive force is generated in the other coil.

  As an operation of the confirmation function, first, the control unit 23 performs switching control so that the changeover switch 26 is opened and closed at a predetermined period for a predetermined period, and supplies a predetermined pulse wave to the coil 24. Thereafter, the changeover switch 26 is returned to the opened initial state.

  At this time, the second sensor unit 3 is in an initial state in which the changeover switch 36 is opened. And when the distance between the 1st sensor part 2 and the 2nd sensor part 3 exists in a detectable distance range, since an electromotive force generate | occur | produces in the coil 34, the voltage detection part 35 detects a voltage. The control unit 33 monitors the voltage detected by the voltage detection unit 35. If a change in the detection voltage from no voltage to voltage is detected, the control unit 33 determines that the first sensor unit 2 is within a detectable distance range. Perform a response action to inform you.

  As the response operation, similarly to the operation of the first sensor unit 2, the changeover switch 36 is controlled to be opened and closed at a predetermined cycle for a predetermined period, and a predetermined pulse wave is supplied to the coil 34. After that, the changeover switch 36 is kept closed to prepare for warning setting. When the distance between the first sensor unit 2 and the second sensor unit 3 is not within the detectable distance range, no electromotive force is generated in the coil 34, so that no response operation to the first sensor unit 2 is performed.

  In the first sensor unit 2, an electromotive force is generated in the coil 24 when a response operation is performed by the second sensor unit 3. When the control unit 23 monitors the voltage detected by the voltage detection unit 25 and detects a change in the detection voltage from no voltage to voltage, the distance between the first sensor unit 2 and the second sensor unit 3 is within the detectable distance range. And a warning setting completion signal is output from the transmission unit 22. Further, if the detected voltage remains at no voltage, the control unit 23 determines that the distance between the first sensor unit 2 and the second sensor unit 3 is not within the detectable distance range, and the warning setting is not made from the transmission unit 22. Outputs a completion signal.

  In the security sensor 1 in the alert setting state, in the second sensor unit 3, since the changeover switch 36 is closed, the power from the internal battery 32 is supplied to the coil 34. In the first sensor unit 2, the changeover switch 26 is open, and the control unit 23 monitors the voltage across the coil 24 detected by the voltage detection unit 25. When the window W is moved by an intruder and the distance between the first sensor unit 2 and the second sensor unit 3 is changed, an electromotive force is generated in the coil 24, and the voltage detected by the voltage detection unit 25 is increased from no voltage. The voltage is changed, and the control unit 23 detects that there is an intruder and outputs an abnormal alarm signal from the transmission unit 22.

  In the intercom base unit 40, when the receiving unit 44 receives the abnormal alarm signal, the warning setting completion signal, and the warning setting incomplete signal, the reception unit 44 outputs the fact to the control unit 42, and the control unit 42 notifies the display unit 45 to that effect. Is displayed, and the display unit 45 displays that fact. Further, the control unit 42 outputs voice data indicating that to the call circuit 46, and the call circuit 46 generates a sound to that effect from an internal speaker. Further, the control unit 42 outputs a switching command for switching and connecting the call calling line L1 and the call circuit 46 to the changeover switch 47, whereby the call circuit 51 of the door phone slave unit 50 is the same as the call circuit 46. Sound is emitted from the internal speaker. In addition to this, in the abnormal alarm signal, the control unit 42 controls the transfer unit 49 to transfer the notification to the resident's mobile phone or management company. Since such operation | movement is performed, it can alert | report whether the inhabitant was detected safely, and can alert | report that an intruder was detected.

  If the warning setting is not completed, the resident releases the security setting by turning off the crime prevention set switch 41 and then narrows the distance between the first sensor unit 2 and the second sensor unit 3. Then, the crime prevention set switch 41 is operated again to perform the warning setting input.

  In releasing the security setting of the security mode, the control unit 42 receives a warning setting release input from the security set switch 41 and outputs a warning setting release request, and the transmission unit 43 releases the warning setting from the control unit 42. The request is received and output to the first sensor unit 2 of the security sensor 1.

  The security sensor 1 receives the warning setting release request from the receiving unit 21 of the first sensor unit 2 and outputs the warning setting release request to the control unit 23. When the control unit 23 receives the warning setting release request, the security sensor 1 has the same function as that described above. The first sensor unit 2 and the second sensor unit 3 are returned to the initial state.

  That is, the control unit 23 performs switching control so that the changeover switch 26 is opened and closed at a predetermined period for a predetermined period, and supplies a predetermined pulse wave to the coil 24. Thereafter, the changeover switch 26 is returned to the opened initial state. Then, in the second sensor unit 3, an electromotive force is generated in the coil 34, a change in the detection voltage by the voltage detection unit 35 is detected, and the control unit 33 returns the changeover switch 36 to the initial state.

  Subsequently, the second sensor unit 3 performs a response operation similar to the confirmation operation (the changeover switch 36 is returned to the opened initial state), and the first sensor unit 2 detecting the response cancels the warning setting. A completion signal is output to the intercom base unit 40, whereby the intercom base unit 40 displays that fact on the display unit 45, generates a sound from the speaker inside the communication circuit 46, and further, the communication circuit of the doorphone slave unit 50. Sounds from 51 speakers.

  The abnormal alarm signal, the alarm setting completion signal, the alarm setting incomplete signal, and the alarm setting release completion signal are in a signal form that can be distinguished and discriminated by the interphone master unit 40, for example, The control unit 23 is configured so that the high signal, the warning setting completion signal is a signal composed of two pulse waves, the warning setting incomplete signal is a signal composed of four pulse waves, and the warning setting cancellation completion signal is a signal of another form. Contact control of the transmission unit 22 is performed.

  In the above-described embodiment, the security sensor 1 detects the occurrence of electromotive force in the coils 24 and 34 during the operation of the distance change detection function and the confirmation function by the voltage change, but may detect it by the current change. In that case, a current detection unit may be provided in series with the coils 24 and 34.

  In the above embodiment, the crime prevention set switch 41 for inputting the warning setting is provided in the intercom base unit 40. However, it may be provided in the vicinity of the entrance of the dwelling unit or in the intercom handset 50. In that case, other members having the same function as the crime prevention set switch 41, for example, a key for exclusive use of the crime prevention set, or an external key locking sensor for inputting a warning setting in conjunction with the external key locking of the dwelling unit door of the dwelling unit entrance, Prevent operation by unspecified people other than residents.

  In the said Example, it is set as the transmission / reception part which integrated the receiving part 21 and the transmission part 22 in the 1st sensor part 2, and was set as the transmission / reception part which integrated the receiving part 44 and the transmission part 43 in the interphone main unit 40, These two transmission / reception Various signals (input / output) may be transmitted and received between the units. As a result, the security sensor 1 and the interphone base unit 40 can be connected by a pair of wires (power supply / signal line). Therefore, when the security sensor 1 and the interphone base unit 40 are used for renewal, This wiring can be used as it is, and there is no need to newly provide a wiring.

  In the security sensor 1 used in the present invention, the distance between the two sensor units 2 and 3 is changed by the two sensor units 2 and 3 separately disposed on the window frame WF and the window W or the door frame and the door. It is a security sensor 1 that detects this and issues an abnormality, and the distance between the two sensor units 2 and 3 has changed from the initial state, with the window W or the door not closed as an initial state. The distance change detection means (the internal battery 32, the coil 34, the coil 24, the voltage detection part 25, the control part 23) that can detect the distance between the two sensor parts 2 and 3 by the distance change detection means Since it is provided with an abnormal alarm signal output means (transmission unit 22) for outputting an abnormal alarm signal when it is detected that the state has changed from the state, the window or door is opened from the initial state where the window or door is not closed. Can detect that has moved As it can detect the intruder.

  In addition, when a warning setting request is received, confirmation means (control unit 23, switching) for confirming whether or not the distance between the two sensor parts 2 and 3 is within the detectable distance range of the distance change detection means. Switch 26, voltage detector 25, coil 24, coil 34, voltage detector 35, changeover switch 36, controller 33, internal battery 32), it is possible to detect whether the window or door has moved. Can be confirmed in advance.

  When the confirmation means confirms that the distance between the two sensor units 2 and 3 is within the detectable distance range of the distance change detection means, a warning setting completion signal is output, and the confirmation means Warning setting completion / uncompleted output means (transmission) that outputs a warning setting incomplete signal when it is confirmed that the distance between the two sensor units 2 and 3 is not within the detectable distance range of the distance change detecting means. Section 22), it is possible to notify whether or not the alert has been set safely.

  The intercom device with a crime prevention function 40 connected to the crime prevention sensor 1 receives a warning setting input from the crime prevention set switch 41 as a warning setting input means, and outputs a warning setting request to the crime prevention sensor 1 Warning setting means (control unit 42, transmission unit 43) and signal input means (receiving unit 44) for inputting the abnormal alarm signal and warning setting completion / incomplete signal, the window or the door is closed. Even in the initial state, the security mode can be set so that an intruder can be detected while ventilating the dwelling unit. Furthermore, it can be notified whether or not the resident has been set to be alert, and can also be notified that an intruder has been detected.

It is a figure which shows the intercom system with a crime prevention function which is one Example of this invention. It is a figure which shows the schematic block diagram of the intercom system with a crime prevention function of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Security sensor, 2 1st sensor part, 2nd sensor part, 21 receiving part, 22 transmission part, 23 control part, 24 coil, 25 voltage detection part, 26 changeover switch, 32 internal battery, 33 control part, 34 coil , 35 Voltage detection unit, 36 changeover switch, 40 intercom master unit, 41 security set switch, 42 control unit, 43 transmission unit, 44 reception unit, 45 display unit, 46 call circuit, 47 changeover switch, 48 call detection circuit, 49 Transfer section, 50 intercom handset, 51 call circuit, 52 call button, L1 call call line, L2 signal line, L3 power / signal line, W window, WF window frame

Claims (3)

A security sensor for detecting an abnormality by detecting a change in the distance between the two sensor units by two sensor units separately disposed on the window frame and the window or the door frame and the door,
A distance change detection unit capable of detecting that the distance between the two sensor units has changed from the initial state, where the window or door is not closed, and the two sensors by the distance change detection unit When it is detected that the distance between the parts has changed from the initial state, an abnormal alarm signal output means for outputting an abnormal alarm signal, and when a warning setting request is received, between the two sensor parts A security sensor , comprising: a confirmation unit configured to confirm whether the distance is within a detectable range of the distance change detection unit . When the confirmation means confirms that the distance between the two sensor units is within the detectable distance range of the distance change detection means, a warning setting completion signal is output, and the confirmation means outputs the two sensors. A warning setting completion / incomplete output means for outputting a warning setting incomplete signal when it is confirmed that the distance between the parts is not within the detectable distance range of the distance change detection means. Item 1. A security sensor according to item 1 . An intercom apparatus with a crime prevention function connected to the security sensor according to claim 1 or 2 , wherein a warning setting means for receiving a warning setting input from a warning setting input means and outputting a warning setting request to the security sensor; An intercom apparatus with a crime prevention function, comprising signal input means for inputting the abnormal alarm signal and the warning setting completion / incomplete signal.

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