JP5885089B2 - Crime prevention system, crime prevention method - Google Patents

Description

  The present invention relates to a crime prevention system and a crime prevention method.

  Awareness of crime prevention has been increasing year by year, and in recent years there has been an increasing interest in home security that protects homes from empty nests. In particular, it is important not only to prevent intrusion into the home, but also to avoid the risk of encountering the intruder when returning home, etc. as a relief of living alone.

  As a method of realizing such home security, the technology of a crime prevention system that installs human detection sensors in several spaces and detects intruders such as empty nests so that they can be seen outside the door of the front door Is known (Patent Document 1).

JP 2005-004633 A

  However, although the technique disclosed in Patent Literature 1 can achieve the purpose of detecting an intruder and making it visible on the outside of the door, a plurality of human detection sensors, touch sensors, A home network was required and the system was large.

  The present invention has been devised to solve such problems of the prior art, and its main purpose is to return home as a safe living alone with a very simple configuration without separately providing a special sensor. The purpose is to provide a crime prevention system capable of avoiding the risk of encountering the intruder at times.

This onset Ming, receives the entrance door station including an imaging unit and a microphone, by wireless communication using the DECT system between said entrance door station, the voice picked up by the pickup image and the microphone was obtained by the imaging unit A security system including the indoor parent device , wherein the indoor parent device periodically transmits a control signal in accordance with the DECT method to the entrance child device. a radio wave intensity measuring unit that measures a field intensity of the control signal according to the DECT system from the base unit, a status display portion that is visibly configured from outside the door, to the chamber based on the radio wave intensity measuring portion of the measuring results when it is determined that an intruder is present, the apparatus controller for controlling to display the effect that intruder into the room is in the state display unit, Ru comprising a.

  According to the present invention, with the above-described configuration, it is possible to avoid the risk of encountering an intruder when returning home as a safer way of living alone, without providing a special sensor separately. Can provide a secure crime prevention system.

The schematic diagram which shows the outline | summary of the crime prevention system in 1st Embodiment The block diagram which shows the structural example of the crime prevention system in 1st Embodiment. The sequence diagram which shows the operation | movement outline | summary of the crime prevention system in 1st Embodiment Sequence diagram showing the status display operation of the security system in the first embodiment The figure which shows the example of a fluctuation | variation of the electromagnetic wave intensity between the camera apparatus and monitor apparatus in 1st Embodiment Sequence diagram showing the threatening operation of the crime prevention system in the first embodiment Sequence diagram showing the operation of the security system in the second embodiment The figure which shows the example of a fluctuation | variation of the electromagnetic wave intensity between the camera apparatus and monitor apparatus in 2nd Embodiment The sequence diagram which shows operation | movement of the crime prevention system in 3rd Embodiment The figure which shows the example of a fluctuation | variation of the electromagnetic wave intensity between the camera apparatus and monitor apparatus in 3rd Embodiment The flowchart which shows operation | movement of the camera apparatus in 4th Embodiment. The flowchart which shows operation | movement of the camera apparatus in 5th Embodiment. The flowchart which shows operation | movement of the monitor apparatus in 6th Embodiment. Sequence diagram showing the operation of the security system in the seventh embodiment The sequence diagram which shows the status display operation by the remote control of the crime prevention system in 8th Embodiment The sequence diagram which shows the threatening operation | movement by the remote control of the crime prevention system in 8th Embodiment

  The present invention made to solve the above-mentioned problems is a security system including an entrance cordless handset and an indoor base phone that performs wireless communication with the entrance cordless handset, wherein the entrance cordless handset and the room Radio wave strength measuring means for measuring the radio wave intensity between the base unit and the entrance cordless handset is provided indoors based on a state display unit configured to be visible from the outside and a measurement result of the radio wave strength measuring means. And a cordless handset control unit that controls to display on the state display unit that there is an intruder in the room when it is determined that there is an intruder in the room.

  Accordingly, it is possible to provide a crime prevention system capable of avoiding the risk of encountering the intruder when returning home as a safe living alone, without providing a special sensor separately.

  Further, according to the present invention, the indoor base unit is configured such that a base unit storage unit that stores a threatening message, a voice output unit that issues the threatening message, and an intruder into the room based on a measurement result of the radio wave intensity measuring unit. And a parent device control unit that controls to output a threatening message read from the parent device storage unit from the voice output unit when it is determined to be present.

  As a result, an intimidation message is issued to prompt the evacuation when there is an intruder, so the intruder can be prevented from entering in advance, and the resident will encounter the intruder when returning home. Risk can be avoided.

  Further, according to the present invention, the entrance slave unit further includes a slave unit operation input unit for inputting a predetermined operation by an operator, and the master unit control unit of the indoor master unit includes a threatening message by the slave unit operation input unit. When an output request operation is input, a threat message read from the parent device storage unit is controlled to be output from the voice output unit.

  As a result, if there is an intruder, a threatening message is issued to prompt the user to move out by operating the buttons, so the intruder can be removed, and the resident encounters the intruder when returning home. The risk of doing so can be avoided.

  Further, according to the present invention, the slave unit control unit of the entrance slave unit determines that there is an intruder in the room based on the measurement result of the radio wave intensity measuring unit, and then enters the room even if a predetermined time elapses. When it is not determined that there is an intruder, the fact that the intruder has moved out of the room is updated and displayed on the status display unit.

  As a result, in addition to the presence or absence of an intruder, it is displayed whether there is an intruder or whether there is an intruder but currently there is, so whether there is an intruder before the resident enters the room when returning home, etc. Therefore, it is possible to know more detailed indoor conditions and to grasp and avoid the risk of encountering the intruder in advance.

  Further, the present invention is a crime prevention method of a crime prevention system including an entrance slave unit and an indoor master unit that performs wireless communication between the entrance slave unit, wherein the entrance slave unit and the indoor master unit A radio field strength measuring step for measuring the radio field strength between the two, a state display step for displaying the signal strength from the outside, and a room when there is an intruder in the room based on the measurement result of the radio field strength measuring step. A security method for a crime prevention system comprising: an entrance cordless handset control step for controlling to display that there is an intruder in the status display step.

  Accordingly, it is possible to provide a crime prevention system capable of avoiding the risk of encountering the intruder when returning home as a safe living alone, without providing a special sensor separately.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic diagram illustrating an outline of a crime prevention system 1000 according to the first embodiment. The security system 1000 includes a camera device 100 and a monitor device 200. The camera device 100 and the monitor device 200 communicate with each other via a wireless line.

  The camera apparatus 100 is disposed outside (outdoors) the entrance door 10 near the entrance door 10 of the house, and is installed by being hooked on the top of the entrance door 10. The camera device 100 images an outdoor space (for example, the vicinity of the visitor 20 and the outdoor entrance door 10).

  The monitor device 200 is installed closer to the living space (indoor) than the entrance door 10 and displays an image received from the camera device 100 at a predetermined timing. The display by the monitor device 200 is confirmed by the resident 30. The monitor device 200 may be fixed at a predetermined position indoors (for example, an indoor wall) or may be appropriately held by the indoor occupant 30 to be movable. FIG. 1 illustrates a case where the monitor device 200 is placed on an indoor table when the resident 30 goes out.

  FIG. 2 is a block diagram illustrating a configuration example of the crime prevention system 1000 according to the first embodiment.

<Configuration of camera device>
The camera device 100 includes a state display unit 101, a button operation input unit 102, an imaging unit 103, a wireless communication unit 104, a radio wave intensity measurement unit 105, a storage unit 106, a control unit 107, a battery 108, and a power supply unit 109.

  The status display unit 101 is a display unit such as an LED, and displays status information such as the presence or absence of an intruder. The status information includes information on whether or not a watch mode, which will be described later, is being set / released, whether an intruder is present, whether there is an intruder at present. The status information is displayed by distinguishing between green, red, or lighting / extinguishing / flashing of the LEDs.

  The display performed by the status display unit 101 is for enabling observation and confirmation from outside when the resident 30 who has gone out returns home.

  The button operation input unit 102 is an input unit that inputs that a button (not shown) provided in the camera device 100 is operated. When the resident 30 who has returned home confirms the display indicating that there is an intruder by the status display unit 101, a button operation such as a button provided for informing the intruder of a message prompting the user to leave is input.

  The imaging unit 103 images a predetermined space outdoors. The image (captured image) captured by the imaging unit 103 includes, for example, a moving image and a still image, and the captured image includes a visitor 20, a passerby, a suspicious person, an object other than a person, and the like.

  The wireless communication unit 104 communicates with the monitor device 200 via a wireless line. The wireless communication unit 104 may operate intermittently. The communication system by the wireless communication unit 104 includes, for example, DECT (Digital Enhanced Cordless Communication), wireless LAN (Lacal Area Network), and Zigbee (registered trademark).

  The wireless communication unit 104 transmits the captured image to the monitor device 200. Thereby, the indoor resident 30 can visually recognize the visitor 20 existing in the vicinity of the entrance door 10. In addition, the wireless communication unit 104 collects the voice of the visitor 20 using a microphone (not shown) of the camera apparatus 100 and transmits voice information including the voice of the visitor 20 to the monitor apparatus 200. In addition, the wireless communication unit 104 receives voice information including the voice of the resident 30 from the monitor device 200. Thereby, the outdoor visitor 20 and the indoor resident 30 can talk.

  When the wireless communication unit 104 communicates according to the DECT method, the DECT is prepared for the power saving mode, so that it can be intermittently started quickly in the intermittent operation. Intermittent activation indicates transition to an operating state in intermittent operation.

  The radio wave intensity measuring unit 105 measures the radio wave intensity of a signal received from the monitor device 200. The radio field intensity is measured by, for example, obtaining a received power RSSI signal (hereinafter simply referred to as “RSSI signal”) from the received signal. An RSSI (Received Signal Strength Indicator) signal is a signal for measuring the strength of a signal received by a wireless communication device such as a cordless telephone system, and is used here as an index indicating the strength of the received radio wave.

  The storage unit 106 is configured by a flash memory or the like, and stores, for example, device information such as an identification number of the camera device 100, threshold information regarding radio wave intensity, state information, a captured image before transmission to the monitor device 200, and the like.

  The control unit 107 includes a ROM (Read Only Memory), a RAM (Random Access Memory), a CPU (Central Processing Unit), and the like. For example, various functions of the control unit 107 are realized by the CPU executing a program held in the ROM.

  The control unit 107 controls the entire camera device 100 and executes various controls, calculations, and determinations. The control unit 107 performs arithmetic processing for controlling each unit of the camera device 100. The control unit 107 may operate intermittently. In the intermittent operation, for example, ULP (Ultra Low Power) technology is used.

  The battery 108 supplies power to the power supply unit 109. The power supply unit 109 receives power from the battery 108 and supplies power for operating the camera device 100 to each unit. The power supply unit 109 may supply power for intermittent operation to the control unit 107 and the wireless communication unit 104.

<Configuration of monitor device>
The monitor device 200 includes a wireless communication unit 201, a control unit 202, a display unit 203, a storage unit 204, an audio output unit 205, and a button operation input unit 206.

  The wireless communication unit 201 communicates with the camera device 100 via a wireless line. Communication methods by the wireless communication unit 201 include, for example, DECT, wireless LAN, and Zigbee (registered trademark).

  The wireless communication unit 201 receives a captured image from the camera device 100. Thereby, the indoor resident 30 can visually recognize the visitor 20 existing in the vicinity of the entrance door 10. In addition, the wireless communication unit 201 receives audio information including the audio of the visitor 20 from the camera device 100. In addition, the wireless communication unit 201 collects the sound of the resident 30 using a microphone (not shown) of the monitor device 200 and transmits sound information including the sound of the resident 30 to the camera device 100. Thereby, the outdoor visitor 20 and the indoor resident 30 can talk.

  The control unit 202 includes a ROM, a RAM, a CPU, and the like. For example, the CPU 202 implements various functions of the control unit 202 by executing programs stored in the ROM.

  The control unit 202 controls the entire monitor device 200 and executes various controls, calculations, and determinations. The control unit 202 performs arithmetic processing for controlling each unit of the monitor device 200.

  The display unit 203 includes, for example, an LCD (Liquid Crystal Display) and displays various images. The image includes, for example, a moving image and a still image, and includes a captured image from the camera device 100 and an image for operating the monitor device 200.

  The storage unit 204 is configured by a flash memory or the like, and includes various images, sounds, and other management information. The image includes, for example, a moving image and a still image, and includes a captured image from the camera device 100 and an image for operating the monitor device 200. The voice includes, for example, a voice of a standard message issued from the monitor device 200 and a threatening voice.

  The other management information includes, for example, setting information (such as a watch mode described later) of the monitor device 200 and password information for preventing the setting information from being changed without permission.

  The voice output unit 205 emits a voice of a standard message, a threatening voice, a voice of the visitor 20 received from the camera device 100, and the like through a speaker (not shown) of the monitor device 200.

  The button operation input unit 206 is an input unit that inputs various keys (not shown), various buttons, or touch panel operations provided in the monitor device 200. Various operations by the resident 30 are accepted.

<Normal mode and lookout mode>
FIG. 3 is a sequence diagram showing an outline of the operation of the security system 1000 according to the first embodiment. The normal mode, the transition from the normal mode to the watch mode, and the end of the watch mode in the security system 1000 will be described according to this sequence.

<Normal mode>
In FIG. 3, the camera device 100 and the monitor device 200 perform periodic reception so as to be able to receive signals transmitted from each other as necessary (the camera device 100 operated by a battery is intermittent in order to reduce power consumption). The reception operation may be performed automatically). Such a state is referred to as a “normal mode” in order to distinguish a “watching mode” described later.

  In the normal mode, when the resident 30 receives a visitor 20 and checks who the visitor 20 is, the following processing is performed between the camera device 100 and the monitor device 200. That is, when the resident 30 presses the imaging button, the button operation input unit 206 of the monitor device 200 inputs the pressing of the imaging button (step 101).

  The control unit 202 receives an input result of the button operation input unit 206 and transmits an imaging request signal to the camera device 100 via the wireless communication unit 201 (step 102). The imaging request signal is a command for causing the camera device 100 to perform imaging and transmitting imaging data. The command format may be determined independently.

  The wireless communication unit 104 that performs periodic reception intermittently in the camera device 100 receives the imaging request signal transmitted from the monitor device 200. Upon receiving the imaging request signal from the wireless communication unit 104, the control unit 107 controls the imaging unit 103 to execute imaging processing (step 103).

  The control unit 202 transmits imaging data captured by the imaging unit 103 to the monitor device 200 via the wireless communication unit 104 (step 104). The imaging data may be a continuous image or a moving image, or may be temporarily stored in the storage unit 106 and transmitted.

  The wireless communication unit 201 that performs periodic reception in the monitor device 200 receives the imaging data signal transmitted from the camera device 100. Upon receiving the imaging data signal from the wireless communication unit 201, the control unit 202 controls the display unit 203 to display the imaging data on the monitor (step 105).

  As described above, in the normal mode, when the visitor 20 receives a visit, the visitor 20 is displayed on the monitor device 200 when the resident 30 presses the imaging button. Can be easily confirmed.

<Transition from normal mode to lookout mode>
Now, the greatest feature in the present embodiment is that the security system 1000 is provided with a “watching mode” that exhibits a unique power when the resident 30 goes out.

  When the watch button is pressed when the resident 30 goes out in the normal mode, the button operation input unit 206 of the monitor device 200 inputs the press of the watch button (step 106).

  The control unit 202 receives the input result of the button operation input unit 206 and transmits a watch mode start signal to the camera device 100 via the wireless communication unit 201 (step 107). The watch mode start signal is a command for causing the camera device 100 to operate in the watch mode. The command format may be determined independently.

  The wireless communication unit 104 that performs periodic reception intermittently in the camera device 100 receives the watch mode start signal transmitted from the monitor device 200. The control unit 107 receives the watch mode start signal from the wireless communication unit 104 and controls the radio wave intensity measurement unit 105 to start measuring the radio wave intensity of the periodic signal transmitted from the monitor device 200 (step 108).

  Further, the control unit 107 controls the state display unit 101 so that the LED on the camera device 100 is lit in green in order to display that the watch mode is being executed (step 109). Thereafter, the camera device 100 that is executing the look-out mode performs various look-out operations that will be described later.

  On the other hand, the control unit 202 of the monitor device 200 that has transmitted the watch mode start signal in step 107 transmits a periodic signal to the camera device 100 via the wireless communication unit 201 (step 110). The periodic signal is a signal for which the camera device 100 is to measure the radio field intensity. The periodic signal is, for example, a control data signal that is constantly (periodically) transmitted from the monitor device 200 to the camera device 100 using a control slot (at least one of 12 slots) according to the DECT method. Thereafter, the monitor device 200 in execution of the watch mode performs various watch operations described later.

<End of lookout mode>
In the watch mode, when the resident 30 returns home from the outside and releases the watch mode, the resident 30 presses the watch button again (a long press of the watch button or another button may be provided). The button operation input unit 206 of the monitor device 200 inputs pressing of the lookout button (step 111).

  The control unit 202 receives the input result of the button operation input unit 206 and transmits a watch mode end signal to the camera device 100 via the wireless communication unit 201 (step 112). The watch mode end signal is a command for causing the camera device 100 to end the watch mode operation. The command format may be determined independently.

  The wireless communication unit 104 that performs periodic reception intermittently in the camera device 100 receives the watch mode end signal transmitted from the monitor device 200. Upon receiving the watch mode end signal from the wireless communication unit 104, the control unit 107 controls the radio wave intensity measuring unit 105 to stop the radio wave intensity measurement (step 113).

  In addition, the control unit 107 controls the state display unit 101 to turn off the LED on the camera device 100 in order to end the display during execution of the watch mode (step 114). Thereafter, the camera apparatus 100 returns to the operation in the normal mode.

  On the other hand, the control unit 202 of the monitor device 200 that has transmitted the watch mode end signal in step 112 stops transmission of the periodic signal to the camera device 100 (step 115). Thereafter, the monitor device 200 returns to the operation in the normal mode.

  In the above description, the periodic signal transmission in step 110 is performed by inputting the press of the lookout button in step 106. However, in the case of a control data signal transmitted from the monitor device 200 to the camera device 100 according to the DECT method, the watch mode is set. Regardless of whether or not, it may be transmitted constantly (periodically).

<Operations during watch mode execution (status display, threatening)>
FIG. 4 is a sequence diagram showing a state display operation of the security system 1000 according to the first embodiment. FIG. 5 is a diagram illustrating a variation example of the radio field intensity between the camera device 100 and the monitor device 200 in the first embodiment. FIG. 5A shows an RSSI signal measured by the radio wave intensity measurement unit 105 during normal times (a state where no person is present in the space between the camera device 100 and the monitor device 200), and FIG. It shows the RSSI signal measured by the radio wave intensity measuring unit 105 at the time of confirmation (a state where a person enters the space between the camera device 100 and the monitor device 200). In the graph, the horizontal axis represents the passage of time [seconds], and the vertical axis represents the signal intensity [dBm].

  Hereinafter, the operation during execution of the watch mode will be described with reference to the sequence diagram of FIG. 4 with reference to FIG.

  During execution of the watch mode shown in FIG. 4, the control unit 107 of the camera device 100 controls the radio wave intensity measuring unit 105 to measure the radio wave intensity of the periodic signal every time periodic reception is performed intermittently by the wireless communication unit 104. To do. The radio wave intensity during normal times is almost stable over time as shown in FIG. 5A, whereas when there is an intrusion (for example, an intruder crosses between the camera device 100 and the monitor device 200) The radio wave intensity is characteristically reduced over time as shown in FIG. 5B.

  When the control unit 107 detects that the radio field intensity measured by the radio field intensity measurement unit 105 has a variation (step 201), it is a variation indicating a characteristic decrease due to intrusion as to whether the variation is within the normal variation range. It is determined whether it exists (step 202).

  The determination is made by, for example, storing the data of the radio wave intensity shown in FIG. 5B in the storage unit 106 as a teacher signal and digitizing the difference between the RSSI signal measured every regular reception and the teacher signal. This is done by obtaining the absolute value of the signal, adding it multiple times, and obtaining the average value.

  When the control unit 107 determines in step 202 that the variation in the radio field intensity measured by the radio field intensity measurement unit 105 is a variation indicating a characteristic decrease due to the intrusion, the control unit 107 transmits the intrusion detection signal via the wireless communication unit 104 to the monitor device 200. (Step 203).

  When receiving the intrusion detection signal via the wireless communication unit 201, the control unit 202 of the monitor device 200 determines that there is an intruder, and a threatening message (for example, “ "What are you doing! Please go out" etc.) is selected and read out and output from the audio output unit 205 (step 204).

  Here, when the intrusion detection signal is received again, the control unit 202 determines that the intruder has not yet left, and performs control so that the intruder is output at a volume higher than that of the intimidation message issued earlier. Alternatively, when selecting voice data of a threatening message stored in the storage unit 204 for urging to move away, a threatening message with a higher threatening effect (for example, “Is it still there! Go out early! Or the like ”may be selected and read out, and output from the audio output unit 205 may be controlled. The intruder has at least once heard a threatening message and is more effective in eviction.

  In this way, by issuing a threatening message for prompting the user to leave the voice output unit 205, the intruder can be prevented from entering the house, and the risk that the resident 30 may encounter the intruder when returning home is avoided. can do.

  Further, the control unit 202 transmits a status display signal indicating that the intruder is in the camera via the wireless communication unit 201 in order to display the presence of the intruder (presently in the room) on the status display unit 101 of the camera device 100. It transmits to the apparatus 100 (step 205).

  When the control unit 107 of the camera apparatus 100 receives a status display signal indicating that the intruder is in the process of being intruded via the wireless communication unit 104, the control unit 107 causes the status display unit 101 to display red blinking indicating the presence of an intruder (step 206).

  In the above description, the control unit 107 of the camera device 100 has been described to display red blinking by the status display unit 101 after receiving the status display signal. However, the radio field strength measured by the radio field strength measurement unit 105 in step 202 is described. The display may be performed when it is determined that the fluctuation is a fluctuation indicating a characteristic decrease due to intrusion.

  After determining that there is an intruder in step 204, the control unit 202 of the monitor device 200 starts a new operation from the camera device 100 even if a predetermined time (for example, a time when it can be determined that there is no intruder, such as one hour) has elapsed. If the intruder detection signal is not received, it is determined that the intruder has left, and a status display signal indicating that there has been an intruder but is not present is sent to the camera device 100 via the wireless communication unit 201. (Step 207).

  When the control unit 107 of the camera apparatus 100 receives the status display signal indicating that there is an intrusion via the wireless communication unit 104, the control unit 107 performs a red lighting display indicating that there is an intruder by the status display unit 101 (Step S107). 208).

  Thus, by distinguishing the display of the status display unit 101 by flashing red / lighting in red, the resident 30 can know a more detailed situation when returning home, and the risk of encountering the intruder. It is possible to grasp and avoid in advance.

<Operation while running in watch mode (intimidation by threatening button)>
In the crime prevention system 1000, when the red flashing / red lighting display is displayed on the status display unit 101 of the camera device 100, the camera device 100 is provided before the resident 30 who returns home enters the room (illustration). No) By pressing a threatening button, a threatening message can be issued to prompt the intruder to leave. Hereinafter, it demonstrates using drawing.

  FIG. 6 is a sequence diagram showing a threatening operation of the security system 1000 according to the first embodiment. When the resident 30 presses the threatening button in the lookout mode, the button operation input unit 102 of the camera device 100 inputs the pressing of the threatening button (step 301).

  The control unit 107 receives an input result of the button operation input unit 102 and transmits a threatening request signal to the monitor device 200 via the wireless communication unit 104 (step 302). The threatening request signal is a command for issuing a threatening message for prompting the monitor device 200 to leave. The command format may be determined independently.

  The wireless communication unit 201 performing periodic reception in the monitor device 200 receives the threat request signal transmitted from the camera device 100. Upon reception of the threat request signal from the wireless communication unit 201, the control unit 202 selects and reads out the threat data message for prompting eviction stored in the storage unit 204, and outputs it from the voice output unit 205. (Step 303).

  Here, the control unit 202 controls the voice output unit 205 so that the voice output unit 205 outputs a sound volume larger than the threat message described in step 204 of FIG. The intruder has at least once heard a threatening message and is more effective in eviction.

  In addition, when the control unit 202 selects voice data of a threatening message stored in the storage unit 204 for prompting the withdrawal, a threatening message with a higher threatening effect (for example, “If you do not go out, call the police. And the like are selected and read out, and control is performed so as to output from the audio output unit 205. Similarly, an intruder has heard a threatening message at least once to further increase the effect of encouraging eviction.

  As described above, according to the crime prevention system 1000, since the presence / absence of an intruder is displayed on the state display unit 101 of the camera device 100, the presence / absence of an intruder before the resident 30 enters the room when returning home or the like. The risk of encountering the intruder can be understood and avoided in advance.

  In addition, according to the security system 1000, in addition to the presence / absence of an intruder, the status display unit 101 of the camera device 100 displays whether there is an intruder or whether there is an intruder but currently no intruder. It is possible to know in detail whether the intruder is in the room before entering the room at the time of returning home or the like, and to grasp and avoid the risk of encountering the intruder in advance.

  Further, according to the crime prevention system 1000, when there is an intruder, a threatening message for prompting the user to move out is issued from the monitor device 200. Therefore, the intruder can be prevented from entering, and the resident 30 can return home. You can avoid the risk of encountering the intruder at times.

  Further, according to the security system 1000, when an intruder is present, a threatening message for prompting the user to move out is issued from the monitor device 200 by operating a button on the camera device 100. Therefore, the intruder can be removed. It is possible to avoid the risk that the resident 30 encounters the intruder when returning home.

  Further, according to the security system 1000, when an intruder is present, a threatening message having a higher threatening effect than a threatening message issued once is issued from the monitor device 200 by operating a button of the camera device 100. The intruder can be moved away, and the risk that the resident 30 encounters the intruder when returning home can be avoided.

  Moreover, since it is not necessary to install a special sensor for detecting the presence or absence of an intruder, the security system 1000 can be realized with a very simple configuration.

(Second Embodiment)
In the first embodiment, an example in which an intrusion is detected based on whether or not the variation in the radio field intensity measured by the radio field intensity measuring unit 105 of the camera device 100 is a variation indicating a characteristic decrease due to the intrusion has been described. In the second embodiment, the operation of the security system 1000 when the presence / absence of intrusion, which cannot be said to be a change due to intrusion, is uncertain will be described.

<Operation during execution of watch mode (when intrusion is uncertain)>
FIG. 7 is a sequence diagram illustrating an operation of the security system 1000 according to the second embodiment. FIG. 8 is a diagram illustrating a variation example of the radio field intensity between the camera device 100 and the monitor device 200 according to the second embodiment. FIG. 8 shows an RSSI signal measured by the radio wave intensity measuring unit 105 when the presence or absence of intrusion is uncertain. The case where the presence / absence of intrusion is indefinite is, for example, a state in which a person is not in the space between the camera apparatus 100 and the monitor apparatus 200, but a person is not present. In the graph, the horizontal axis represents the passage of time [seconds], and the vertical axis represents the signal intensity [dBm].

  In the following, referring to FIG. 8 (FIG. 5 if necessary), the operation during execution of the watch mode will be described according to the sequence diagram of FIG. In the description, the description of the same contents as those in FIGS. 3 and 4 is omitted or simplified.

  During execution of the watch mode shown in FIG. 7, the control unit 107 of the camera apparatus 100 controls the radio wave intensity measuring unit 105 to measure the radio wave intensity of the periodic signal every time periodic reception is performed intermittently by the wireless communication unit 104. To do. The radio wave intensity during normal times is almost stable over time as shown in FIG. 5A, whereas when there is an intrusion (for example, an intruder crosses between the camera device 100 and the monitor device 200) The radio wave intensity is characteristically reduced over time as shown in FIG. 5B.

  However, as shown in FIG. 8, when the reflected wave is blocked instead of directly blocking the wave by an intruder crossing between the camera device 100 and the monitor device 200, the radio wave intensity is reduced. It does not show characteristic fluctuations over time, and is fluctuations with fluctuations. Even in such a case, the security system 1000 performs the security operation described below.

  When the control unit 107 detects that the radio field intensity measured by the radio field intensity measurement unit 105 is varied (step 401), the control unit 107 determines whether the variation is within the range of variation during normal times or a variation indicating a characteristic decrease due to intrusion. Or whether the fluctuation is accompanied by fluctuations (step 402).

  The determination as to whether the fluctuation is within the range of fluctuation during normal times or a fluctuation indicating a characteristic decrease due to intrusion is as described in the description of step 202 in FIG. 4, for example. Here, if the control unit 107 cannot determine that the fluctuation of the radio wave intensity measured by the radio wave intensity measurement unit 105 is within the range of fluctuation during normal times or a fluctuation indicating a characteristic decrease due to intrusion, It is determined whether or not the fluctuation pattern is fluctuation with fluctuation.

  Whether or not the variation pattern is a variation with fluctuation is determined by whether or not the variation in the range of the predetermined variation range continues for a predetermined time. This is because when the reflected wave is cut off, the fluctuation width is smaller and the fluctuation duration is longer than when the direct wave is cut off as shown in the graph of FIG. However, in order to reduce the power consumption of the CPU of the control unit 107, if it cannot be determined that the fluctuation is within the fluctuation range during normal times or a characteristic decrease due to intrusion, the fluctuation pattern is The fluctuation may be accompanied by fluctuations.

  If the control unit 107 determines in step 202 that the fluctuation of the radio wave intensity measured by the radio wave intensity measurement unit 105 is a fluctuation indicating a characteristic decrease due to intrusion or a fluctuation accompanied by fluctuation, the control unit 107 transmits the fluctuation via the wireless communication unit 104. The intrusion detection signal including the cause is transmitted to the monitor device 200 (step 403).

  The intrusion detection signal including the factor indicates whether the control unit 107 determines that the fluctuation in the radio wave intensity is a fluctuation indicating a characteristic decrease due to the intrusion or the fluctuation is accompanied by fluctuation. A flag is added to the intrusion detection signal.

  When the control unit 202 of the monitor device 200 receives the intrusion detection signal via the wireless communication unit 201, it can be determined that there is an intruder by referring to the flag included in the intrusion detection signal, or indefinite. Is determined (step 404). Then, voice data of a threatening message (for example, “What are you doing! Please go out”) stored in the storage unit 204 is selected and read out from the voice output unit 205. Output (step 405).

  Regardless of whether or not it can be determined that there is an intruder in this way, by issuing a threatening message for prompting the user to leave the voice output unit 205, the security system 1000 can always be controlled safely, It is possible to prevent the intruder from entering the home and avoid the risk that the resident 30 encounters the intruder when returning home.

  On the other hand, regardless of whether or not it can be determined that an intruder is present, if the presence display of the intruder (presently in the room) is displayed on the status display unit 101 of the camera apparatus 100, the security system 1000 may display erroneously ( It shows that there is an intruder but it is not actually). When this happens, the resident 30 ignores the status display when he / she goes home and the risk of encountering the intruder cannot be avoided.

  Therefore, when it cannot be determined that there is an intruder, the control unit 202 of the monitor device 200 determines the timing for displaying the presence of the intruder on the state display unit 101 of the camera device 100 (step 406). For example, it waits until the intrusion detection signal received in step 403 is received a predetermined number of times.

  Thereafter, as described with reference to FIG. 4, the control unit 202 displays a status display signal indicating that an intruder is present in order to display the presence of an intruder (that the user is currently in the room) on the status display unit 101 of the camera device 100. It transmits to the camera apparatus 100 via the wireless communication part 201 (step 407).

  When the control unit 107 of the camera apparatus 100 receives a status display signal indicating that an intruder is being entered via the wireless communication unit 104, the status display unit 101 displays a blinking red color indicating the presence of an intruder (step 408).

  As described above, when it is not possible to determine that there is an intruder, the timing for displaying the presence of the intruder on the state display unit 101 of the camera device 100 is determined, so that an increase in erroneous display can be suppressed.

  As described above, according to the security system 1000, even if it cannot be determined that there is an intruder, a threatening message for prompting the exit is issued, so that it can always be controlled to the safe side, and in that case By increasing the timing for displaying the presence of an intruder, an increase in erroneous display can be suppressed. For this reason, the reliability of the crime prevention system 1000 can be further improved.

(Third embodiment)
In the first embodiment, an example is shown in which an intrusion is detected based on whether or not the fluctuation of the radio field intensity measured by the radio field intensity measuring unit 105 of the camera device 100 is a fluctuation indicating a characteristic decrease due to the intrusion. In the embodiment, the operation example of the crime prevention system 1000 when the presence / absence of intrusion is uncertain, in which the fluctuation of the radio wave intensity cannot be said to be a fluctuation due to the intrusion, has been shown. In the third embodiment, an operation of the security system 1000 when the fluctuation of the radio wave intensity is a fluctuation due to opening and closing of the door will be described.

<Operations in the watch mode (when opening and closing the door)>
FIG. 9 is a sequence diagram showing the operation of the crime prevention system 1000 according to the third embodiment. FIG. 10 is a diagram illustrating a variation example of the radio field intensity between the camera device 100 and the monitor device 200 according to the third embodiment. FIG. 10 shows an RSSI signal measured by the radio wave intensity measuring unit 105 when the door is changed from the closed state to the opened state. In the graph, the horizontal axis represents the passage of time [seconds], and the vertical axis represents the signal intensity [dBm].

  In the following, referring to FIG. 10 (FIG. 5 if necessary), the operation during execution of the watch mode will be described according to the sequence diagram of FIG. In the description, the description of the same contents as those in FIGS. 3 and 4 is omitted or simplified.

  During execution of the watch mode shown in FIG. 9, the control unit 107 of the camera device 100 controls the radio wave intensity measuring unit 105 to measure the radio wave intensity of the periodic signal every time periodic reception is performed intermittently by the wireless communication unit 104. To do. The radio wave intensity during normal times is almost stable over time as shown in FIG. 5A, but is characteristic over time as shown in FIG. 10 when the door changes from a closed state to an open state. To decrease. That is, since the camera device 100 is assumed to be hooked and installed on the entrance door 10, the camera device 100 also moves with the opening operation of the door, and the distance between the camera device 100 and the monitor device 200 is increased. Therefore, the radio wave intensity is reduced so as not to be compared with the direct wave cut-off illustrated in the first embodiment.

  When the control unit 107 detects that the radio field intensity measured by the radio field intensity measurement unit 105 has a variation (step 501), whether the variation is within the range of variation during normal times or is a variation indicating a decrease due to intrusion. Then, it is determined whether the fluctuation is accompanied by fluctuation or the fluctuation is caused by the opening operation of the door (step 502).

  The determination in the case of factors other than the variation associated with the door opening operation is as described in the description of step 202 in FIG. 4 and step 402 in FIG.

  The determination as to whether or not the variation pattern is a variation associated with the opening operation of the door is based on whether or not the signal strength of the RSSI signal measured by the radio field strength measurement unit 105 every time it is received exceeds a predetermined threshold over time. To do. This is because a variation threshold that is clearly different from the variation width when the direct wave or the reflected wave is blocked can be set.

  In the above determination, the absolute value of the digital difference signal obtained by storing the radio field intensity data of FIG. 10 in the storage unit 106 as a teacher signal and digitizing the difference between the RSSI signal measured every periodic reception and the teacher signal. May be obtained by adding these multiple times and obtaining the average value. This is because it is possible to make a determination at the same time by the same mechanism as the determination of whether or not the fluctuation is a decrease due to intrusion.

  When the control unit 107 determines in step 502 that the variation in the radio field intensity measured by the radio field intensity measurement unit 105 is a variation associated with the opening operation of the door, the control unit 107 controls the imaging unit 103 to image a predetermined space outdoors ( Step 503). This is because the captured image including the intruder at the moment when the door is opened is automatically recorded.

  The control unit 107 transmits an intrusion detection signal including the factor (variation associated with the door opening operation) to the monitor device 200 via the wireless communication unit 104 (step 504).

  Whether the intrusion detection signal including the factor is determined by the control unit 107 as a variation indicating a characteristic decrease due to the intrusion, or whether the variation in the radio wave intensity is a variation associated with the opening operation of the door Are added to the intrusion detection signal.

  When receiving the intrusion detection signal via the wireless communication unit 201, the control unit 202 of the monitor device 200 refers to a flag included in the intrusion detection signal and determines the detection factor (step 505). If the factor is associated with the opening operation of the door, the intruder can be prevented from entering in advance. Therefore, a threatening message (for example, “Who is! The voice data is selected and read out and output from the voice output unit 205 (step 506).

  It is desirable that the threatening message for preventing the intrusion should be loud so that it can be heard by the intruder at the moment when the door is opened. The selection of the voice data can be easily performed, for example, by associating a detection factor with a threatening message corresponding to the detection factor in the storage unit 204.

  When the control unit 107 determines in step 502 that the variation in the radio field intensity measured by the radio field intensity measurement unit 105 is a variation associated with the opening operation of the door, the control unit 107 controls the imaging unit 103 to image a predetermined space outdoors ( Step 503). This is because the captured image including the intruder at the moment when the door is opened is automatically recorded.

  The control unit 107 of the camera apparatus 100 that has transmitted the intrusion detection signal to the monitor apparatus 200 in step 504 further transmits the captured image captured in step 503 to the monitor apparatus 200 (step 507).

  When the control unit 202 of the monitor device 200 receives the captured image via the wireless communication unit 201, the control unit 202 stores the current captured image in the storage unit 204 to automatically record the captured image including the intruder at the moment of opening the door. It is stored together with time information (step 508).

  Thus, according to the crime prevention system 1000, it is possible to issue a threatening message for preventing intrusion so that it can be heard by an intruder at the moment of opening the door. For this reason, it is possible to prevent the intruder from entering the home, and to avoid the risk that the resident 30 encounters the intruder when returning home.

  Also, according to the security system 1000, it is possible to automatically record a captured image including an intruder at the moment when the door is opened. Therefore, in addition to preventing the intruder from entering the home, the captured image can be provided to the police regarding the intruder.

  In addition, since it is possible to capture an image when the intruder has just opened the door, there is no waste of constantly capturing images regardless of the door opening. For this reason, the power consumption of the camera apparatus 100 can also be suppressed significantly.

  Moreover, since it is not necessary to install a special sensor for detecting the opening operation of the door, the crime prevention system 1000 can be realized with a very simple configuration.

  In the following, as described in step 207 of FIG. 4, the control unit 202 transmits a status display signal indicating that there is an intruder but is not present to the camera device via the wireless communication unit 201. 100, and the control unit 107 of the camera apparatus 100 may cause the status display unit 101 to display red light indicating that there is an intruder.

  If an intrusion can be prevented by an intimidating message to prevent intrusion, it is enough to indicate that there was an intruder, and unfortunately, if it has been intruded, it will be described in the first embodiment etc. This is because the crime prevention processing of the crime prevention system 1000 performed.

(Fourth embodiment)
In the fourth embodiment, a modified example of the operation of transition from the normal mode to the watch mode of the security system 1000 described in the first embodiment will be described.

  FIG. 11 is a flowchart illustrating the operation of the camera device 100 according to the fourth embodiment. In the following, the transition operation from the normal mode to the watch mode of the camera apparatus 100 will be described with reference to the flowchart of FIG. In the description, the description will be omitted or simplified with reference to FIG.

<Transition from normal mode to lookout mode>
In step 107 of FIG. 3, the control unit 107 of the camera device 100 that has received the watch mode start signal transmitted from the monitor device 200 controls the status display unit 101 to prepare the watch mode as shown in FIG. In order to display that, the LED on the camera device 100 blinks in green (step 601).

  The control unit 107 performs counting by a timer (not shown) (step 602). This is to count the time since the resident 30 went out to press the watch button.

  The control unit 107 determines whether or not the timer counted in step 602 has reached a predetermined set time (for example, 3 minutes) (step 603). If the predetermined set time has not been reached, the process returns to step 602.

  Here, the predetermined set time is an expected time from when the watch button is pressed to when the user leaves the room. The predetermined set time may be arbitrarily set by the resident 30 by operating a button on the camera device 100 or the monitor device 200. When setting is made in the monitor device 200, information on the set time is also transmitted to the camera device 100.

  When the count of the timer performed in step 602 reaches a predetermined set time, the control unit 107 controls the radio wave intensity measuring unit 105 to start measuring the radio wave intensity of the periodic signal transmitted from the monitor device 200 (step 604). ), The status display unit 101 is controlled, and the LED on the camera device 100 is lit in green to indicate that the watch mode is being executed (step 605).

  Thereafter, the camera device 100 performs various types of watching operations during the execution of the watching mode of FIG.

  As described above, according to the crime prevention system 1000, the presence / absence of an intruder after the resident 30 leaves the room (after a predetermined set time has elapsed) is displayed on the status display unit 101 of the camera device 100. Therefore, the resident 30 can more accurately confirm the presence or absence of an intruder before entering the room when returning home, and can grasp and avoid the risk of encountering the intruder in advance.

  Moreover, since it is not necessary to install a special sensor for detecting that the resident 30 has left the room, the security system 1000 can be realized with a very simple configuration.

  In addition, since the resident 30 can arbitrarily set a predetermined set time, the usability of the crime prevention system 1000 is very good.

(Fifth embodiment)
In the fifth embodiment, as in the fourth embodiment, another modified example of the operation of shifting from the normal mode to the watch mode of the security system 1000 described in the first embodiment will be described.

  FIG. 12 is a flowchart illustrating the operation of the camera device 100 according to the fifth embodiment. Hereinafter, the transition operation from the normal mode to the watch mode of the camera apparatus 100 will be described with reference to the flowchart of FIG. In the description, the description will be omitted or simplified with reference to FIG.

<Another example of transition from normal mode to watch mode>
In step 107 of FIG. 3, the control unit 107 of the camera device 100 that has received the watch mode start signal transmitted from the monitor device 200 controls the radio wave intensity measurement unit 105 to transmit from the monitor device 200 as shown in FIG. 12. The measurement of the radio field intensity of the periodic signal to be started is started (step 701), and the status display unit 101 is controlled to blink the LED on the camera device 100 in order to indicate that the watch mode is being prepared (step S701). Step 702).

  The control unit 107 determines whether or not the fluctuation of the radio field intensity measured by the radio field intensity measurement unit 105 is stable (becomes within the normal fluctuation range) (step 703). The determination is made, for example, based on whether or not the fluctuation continues within a normal fluctuation range for a predetermined time. If the fluctuation is not stable, the process returns to step 703.

  The reason why it is determined whether or not the fluctuation of the radio wave intensity is stable is to cope with a case where the resident 30 does not know the time until the resident 30 depresses the lookout button and actually leaves the room. .

  When the control unit 107 determines that the fluctuation of the radio field intensity performed in step 703 is stable, the control unit 107 controls the status display unit 101 to display that the watch mode is being executed. Is lit in green (step 704).

  Thereafter, the camera device 100 performs various types of watching operations during the execution of the watching mode of FIG.

  As described above, according to the crime prevention system 1000, since the presence / absence of an intruder after the resident 30 actually leaves the room is displayed on the state display unit 101 of the camera device 100, the resident 30 returns home. It is possible to more accurately confirm the presence or absence of an intruder before entering the room at times, and to grasp and avoid the risk of encountering the intruder in advance.

Moreover, since it is not necessary to install a special sensor for detecting that the resident 30 has left the room, the security system 1000 can be realized with a very simple configuration.
Also, according to the security system 1000, even if the resident 30 cannot leave the room within the predetermined set time described in the fourth embodiment, the presence or absence of an intruder after actually leaving the room is confirmed. Since it can be confirmed, the usability of the security system 1000 is further improved by combining both.

(Sixth embodiment)
In the sixth embodiment, a modified example of the operation at the end of the watch mode of the security system 1000 described in the first embodiment will be described.

  FIG. 13 is a flowchart showing the operation of the monitor device 200 according to the sixth embodiment. Hereinafter, the operation at the end of the watch mode of the monitor device 200 will be described with reference to the flowchart of FIG. In the description, the description will be omitted or simplified with reference to FIG.

<End of lookout mode>
In step 111 during execution of the watch mode in FIG. 3, an operator of the monitor device 200 (here, not only the resident 30 but also an intruder is assumed to be an operator) presses the monitor button of the monitor device 200. Then, as shown in FIG. 13, the control unit 202 of the monitor device 200 determines the input result of pressing the watch button input by the button operation input unit 206 in order to determine whether or not the watch mode release operation is performed (step 801). . If the watch button is not pressed, it is determined that there is no watch mode release operation, and the process returns to step 801.

  When the control unit 202 determines that the watch button has been pressed, the control unit 202 requests the operator to input a password on the assumption that the watch mode is canceled, and the value input by the operator is stored in the storage unit 204 in advance. It is determined whether or not it matches the stored password (step 802). If they do not match, the process returns to step 801. That is, when the operator is not the resident 30 but an intruder, the watch mode is not terminated arbitrarily.

  When it is determined that the value input by the operator matches the password stored in advance in the storage unit 204, the control unit 107 performs the operation from step 112 in FIG. Transition to normal mode.

  As described above, according to the crime prevention system 1000, it is possible to prevent an intruder from canceling the watch mode without permission. For this reason, the presence / absence of an intruder remains displayed on the status display unit 101 of the camera device 100, and the resident 30 can check the presence / absence of an intruder before entering the room when returning home. Can be identified and avoided in advance.

(Seventh embodiment)
In the seventh embodiment, a modified example of the state display operation of the security system 1000 described in the first embodiment will be described.

  FIG. 14 is a sequence diagram illustrating an operation of the security system 1000 according to the seventh embodiment. Hereinafter, the state display operation in the camera apparatus 100 will be mainly described with reference to the sequence diagram of FIG. In the description, reference is made to FIG. 3 and FIG. 4 as necessary, and the description of the overlapping parts is omitted or simplified.

<Hiding status display>
In FIG. 14, when the resident 30 goes out and presses the watch button, the button operation input unit 206 of the monitor device 200 inputs the press of the watch button (step 901).

  The control unit 202 receives the input result of the button operation input unit 206 and transmits a watch mode start signal to the camera device 100 via the wireless communication unit 201 (step 902).

  Upon reception of the watch mode start signal, the control unit 107 of the camera device 100 starts measuring the radio field intensity of the periodic signal transmitted from the monitor device 200 and displays that the watch mode is being executed ( Information indicating that the LED on the camera device 100 is lit green is stored in the storage unit 106 as state information (step 903).

  Here, the difference from the operation of the status display described in FIG. 3 is that the control unit 107 does not display the fact that the watch mode is being executed by controlling the status display unit 101 (LED is lit in green). The switching to this operation may be specified by, for example, a button operation of the camera device 100 or the monitor device 200 by the resident 30 and stored as setting information regarding the state display. When specified in the monitor device 200, the setting information regarding the status display is also transmitted to the camera device 100.

  When the control unit 107 that has shifted to the watch mode determines that the change in the radio field intensity measured by the radio field intensity measurement unit 105 is a change due to intrusion, the control unit 107 transmits an intrusion detection signal to the monitor device 200 (step 904).

  When receiving the intrusion detection signal, the control unit 202 of the monitor device 200 transmits a state display signal indicating that the intrusion is in progress to the camera device 100 (step 905).

  Although the threat message output and the like described in FIG. 4 are performed in the same manner, the description of the portion not related to the status display is omitted here.

  When the control unit 107 of the camera device 100 receives the status display signal indicating that the intruder is in progress via the wireless communication unit 104, the control unit 107 displays information indicating the presence of the intruder (the LED on the camera device 100 blinks red). Information is updated and stored in the storage unit 106 (step 906).

  Here, the difference from the operation of the status display described in FIG. 4 is that the control unit 107 controls the status display unit 101 so as not to display the presence of an intruder (the LED blinks red).

  When the resident 30 returns home and presses a confirmation button (not shown) provided in the camera device 100, the button operation input unit 102 of the camera device 100 inputs the pressing of the confirmation button (step 907).

  The control unit 107 receives the input result of the button operation input unit 102, reads the state information stored in the storage unit 106, controls the state display unit 101, and displays the state information on the LEDs on the camera device 100. To do. In FIG. 14, since the storage unit 106 stores information indicating the presence of an intruder as the latest state information, the LED blinks in red (step 908).

  As described above, according to the crime prevention system 1000, when the confirmation button of the camera device 100 is pressed, the presence / absence of an intruder is displayed on the status display unit 101 of the camera device 100. By pressing the confirmation button before entering the room when returning home, the presence or absence of the intruder can be confirmed, and the risk of encountering the intruder can be grasped and avoided in advance.

  Moreover, since the display by the status display unit 101 is not performed until the confirmation button is pressed, it is possible to prevent the resident 30 from being easily informed that the occupant is out of the office. Can improve the safety.

  Further, since the resident 30 can designate switching to the main operation by a button operation or the like, the usability of the crime prevention system 1000 is very good.

(Eighth embodiment)
In the eighth embodiment, another modification of the modification of the state display operation of the security system 1000 described in the seventh embodiment will be described.

  FIG. 15 is a sequence diagram illustrating a state display operation by the remote controller of the crime prevention system 1000 according to the eighth embodiment. FIG. 16 is a sequence diagram showing a threatening operation by the remote control of the security system 1000 according to the eighth embodiment. 15 and 16 are largely different from those in FIG. 14 in that there is a remote controller that communicates with the monitor device 200. Hereinafter, the operation of the relationship between the monitor device 200 and the remote controller will be mainly described with reference to the sequence diagrams of FIGS. 15 and 16. In the description, the description will be omitted or simplified with reference to FIG.

<Watch mode setting operation and display by remote control>
In FIG. 15, when the resident 30 goes out, the resident 30 performs an operation equivalent to pressing the look button from the remote control to the monitor device 200 (hereinafter referred to as watch operation) (step 1001), and presses the watch button from the remote control to the monitor device 200. Is transmitted (step 1002).

  When the control unit 202 of the monitor device 200 receives the watch button press signal, the camera device via the wireless communication unit 201 is exactly the same as when the monitor button 200 is input by the button operation input unit 206. A watch mode start signal is transmitted to 100 (step 1003).

  Further, the control unit 202 transmits a status display signal indicating that the watch mode is being executed (the lamp on the remote control is lit in green) to the remote control (step 1004), and the remote control that has received this signal. Lights the lamp on the remote control in green (step 1005).

  Further, the control unit 202 stores information indicating that the look-out mode is being executed (the lamp on the remote control is lit in green) in the storage unit 204 as state information (step 1006).

  Thereafter, the operation from Step 1007 to Step 1010 is exactly the same as the operation from Step 903 to Step 906 described with reference to FIG. 14, and thus the description thereof will be omitted and the description will be continued from the next Step 1011.

  In step 1009, the control unit 202 of the monitor device 200 that has transmitted the status display signal indicating that the camera device 100 is intrusion stores information indicating that the device is intrusion (the lamp on the remote controller blinks red) as the status information. (Step 1011).

<Operation confirmation and display by remote control>
When the resident 30 returns home and performs an operation equivalent to pressing the confirmation button from the remote control to the camera device 100 (hereinafter referred to as a confirmation operation) (step 1012), a signal for pressing the confirmation button is transmitted from the remote control to the monitor device 200. (Step 1013).

  When receiving the confirmation button pressing signal, the control unit 202 of the monitor device 200 transmits a confirmation button pressing signal to the camera device 100 via the wireless communication unit 201 (step 1014).

  In addition, the control unit 202 reads the status information stored in the storage unit 204 and transmits a status display signal to the remote controller. In FIG. 15, a message indicating that the intrusion is being stored as the latest state information in the storage unit 204 is transmitted (the lamp on the remote control is flashed in red) (step 1015). The upper lamp blinks red (step 1016).

  The control unit 107 of the camera device 100 receives the confirmation button press signal in step 1014, reads the state information stored in the storage unit 106, controls the state display unit 101, and stores the state information on the camera device 100. Is displayed on the LED. In FIG. 15, since the storage unit 106 stores the fact that the intruder is present as the latest state information, the LED blinks in red (step 1017).

<Intimidation with remote control>
In FIG. 16, when the resident 30 comes home from the outside and recognizes the presence of an intruder by the LED on the camera device 100 or the red flashing display on the remote controller, it is equivalent to pressing a threatening button on the camera device 100 from the remote controller. When an operation (hereinafter referred to as threatening operation) is performed (step 1101), a threatening button pressing signal is transmitted from the remote control to the monitor device 200 (step 1102).

  When the control unit 202 of the monitor device 200 receives the signal of pressing the threatening button, the control unit 202 selects and reads the voice data of the threatening message stored in the storage unit 204 for prompting the withdrawal, and outputs the voice data from the voice output unit 205 ( Step 1103).

  As described above, according to the crime prevention system 1000, when a confirmation operation is performed from the remote controller, the presence / absence of an intruder is displayed on the status display unit 101 of the camera device 100. By entering the remote control before entering the room, the presence or absence of an intruder can be confirmed, and the risk of encountering the intruder can be known and avoided in advance.

  Moreover, since the display by the status display unit 101 is not performed until the remote control is operated, it is possible to prevent the resident 30 from being easily informed that the resident 30 is out, and in using the security system 1000. Safety can be increased.

  Further, when an intruder is present, a remote control operation is performed to issue a threatening message for urging the user to leave the monitor device 200. Therefore, the intruder can be removed, and the resident 30 can return to the home when he / she goes home. The risk of encountering an intruder can be avoided.

  In addition, since the resident 30 can set the watch mode with the remote controller, the usability of the security system 1000 is very good.

  In the eighth embodiment, the lamp display is also performed on the remote controller. However, the display on the remote controller is arbitrary. This is because the same effect can be obtained even when the remote control has no display unit. Moreover, although the example which memorize | stores a status display also in the monitor apparatus 200 was shown, you may memorize | store a status display only in the camera apparatus 100. FIG. This is because the camera device 100 and the monitor device 200 can transmit and receive information to and from each other. Further, although the remote controller has shown an example in which it communicates with the monitor device 200, it may communicate with the camera device 100. This is because the communication environment is better when communicating with the camera device 100 installed outdoors when going home from outside.

  INDUSTRIAL APPLICABILITY The present invention is useful for a crime prevention system, a crime prevention system, and the like that can avoid the risk of encountering an intruder when returning home as a safe living alone with a very simple configuration.

DESCRIPTION OF SYMBOLS 1000 Crime prevention system 10 Entrance door 20 Visitor 30 Resident 100 Camera apparatus 101 Status display part 102 Button operation input part 103 Imaging part 104 Wireless communication part 105 Radio wave intensity measurement part 106 Storage part 107 Control part 108 Battery 109 Power supply part 200 Monitor apparatus 201 wireless communication unit 202 control unit 203 display unit 204 storage unit 205 voice output unit 206 button operation input unit

Claims (5)

An entrance slave unit including an imaging unit and a microphone, and an indoor master unit that receives a captured image obtained by the imaging unit and sound collected by the microphone by wireless communication using the DECT method between the entrance slave unit and the entrance slave unit. A security system including
The indoor parent device periodically transmits a control signal according to the DECT method to the entrance child device,
The entrance cordless handset is a radio field strength measuring unit that measures the radio field strength of a control signal according to the DECT method from the indoor base unit by the wireless communication ,
And state display unit which is configured to be visible from outside the door,
When it is determined that there is an intruder into the room based on the measurement result of the radio wave intensity measurement unit , a slave unit control unit that controls to display on the state display unit that there is an intruder into the room; equipped with a,
Security system. The indoor base unit is
A base unit storage unit for storing threatening messages;
An audio output unit for issuing the threat message;
If it is determined that the intruder into the room on the basis of the radio wave intensity measuring portion of the measuring result is present, the master unit control section for controlling to output a threat message read out from said base unit storage unit from the audio output unit The crime prevention system according to claim 1 , further comprising: The entrance cordless handset is
Handset operation input unit for inputting a predetermined operation by the operator, further comprising a
Base unit controller of the indoor base unit, if the child machine operation input unit inputs an operation threatening message output request, the threat message read out from said base unit storage unit to output from the audio output unit control, security system according to claim 2. Before Noriko machine control unit, when the after determining the intruder into the room there is based on the radio wave intensity measuring portion of the measuring results, even after a lapse of a predetermined time does not determine that an intruder into the room there is controls to the effect that the intruder into the room is vacated updates displayed on the status display unit, security system according to claim 1. An entrance slave unit including an imaging unit and a microphone, and an indoor master unit that receives a captured image obtained by the imaging unit and sound collected by the microphone by wireless communication using the DECT method between the entrance slave unit and the entrance slave unit. A crime prevention method of a crime prevention system including
The indoor parent device periodically transmits a control signal according to the DECT method to the entrance child device,
The entrance door station, the radio wave intensity of the control signal according to the DECT system from the indoor base unit measured by wireless communication, if it is determined that the intruder into the room there is, based on the radio wave strength of the measurement result In addition, it is controlled to display that there is an intruder into the room on the state display unit configured to be visible from the outside .
Crime prevention method of the crime prevention system.

Images