JP5885000B1 - Doorphone system and control method of doorphone system - Google Patents

Abstract

To provide a control method for a door phone system capable of continuing remote monitoring even when a wireless device moves out of a wireless reachable range of an entrance cordless handset. A door phone system 100 includes a plurality of door phone devices including a door phone parent device disposed in a room and an entrance child device that transfers a signal received from a wireless device that moves together with a moving body to the door phone parent device. The door phone system of the first door phone device in the plurality of door phone devices is connected to the door phone device of the second door phone device in the plurality of door phone devices. Transmits and receives information about the wireless device. [Selection] Figure 13

Description

  The present invention relates to a door phone system and a method for controlling the door phone system.

  A surveillance camera is installed outside the room to check the condition of a specific person outside the room (hereinafter referred to as “remote monitoring”), such as watching the child playing outdoors or the elderly walking in the garden from the inside. It has been done conventionally. However, it is troublesome and expensive to install a communication cable between the outdoor monitoring camera and the indoor device that presents the camera video. On the other hand, since the outer wall of the building has a high radio wave shielding property, it is difficult to connect the surveillance camera and the indoor device by wireless communication.

  Therefore, it has been proposed to add a remote monitoring function to a door phone system having an entrance cordless handset installed at the entrance and an door phone master set installed indoors (see, for example, Patent Document 1). .

  An entrance cordless handset is usually installed outside the exterior wall of the entrance. In the technique described in Patent Document 1 (hereinafter referred to as “prior art”), a surveillance camera is arranged outdoors, and a wireless communication unit that receives information transmitted from the surveillance camera by wireless communication is provided in the entrance unit. . The entrance slave unit transmits the information received from the monitoring camera to the door phone master unit by wired communication, in the same manner as the information acquired by the normal door phone function.

  According to such a conventional technique, it is possible to perform remote monitoring more easily.

JP 2003-289534 A

  However, in the conventional technology, although the monitoring camera that performs wireless communication with the entrance slave unit can be monitored remotely when the surveillance camera is within the wireless reachable range of the entrance slave unit, the monitoring is not performed when the surveillance camera is outside the wireless reachable range. could not.

  That is, a wireless device that performs wireless communication with an entrance cordless handset (which refers to a device that performs wireless communication with an entrance cordless handset including a surveillance camera and a device that can be carried by a child or an elderly person) If you move out of range, you can't watch.

  For this reason, provision of a means by which remote monitoring can be continued even if the wireless device moves out of the wireless reachable range of the entrance cordless handset has been demanded.

  An object of the present invention is to provide a door phone system and a control method for the door phone system that can continue to be monitored remotely even when the wireless device moves out of the wireless reachable range of the entrance cordless handset.

  The door phone system of the present disclosure includes a plurality of door phone devices including a door phone parent device disposed in a room and an entrance child device that transfers a signal received from a wireless device that moves together with a moving body to the door phone parent device. The door phone system of the first door phone device in the plurality of door phone devices is wirelessly connected to the door phone device of the second door phone device in the plurality of door phone devices. It is a door phone system that transmits and receives information about a device.

  The doorphone system control method according to the present disclosure includes a plurality of doorphones including a doorphone master unit disposed in a room and an entrance slave unit that transfers a signal received from a wireless device that moves together with a moving body to the doorphone master unit. A door phone system control method comprising a plurality of door phone devices, wherein the first door phone device of the plurality of door phone devices is an entrance child device of the second door phone device of the plurality of door phone devices. Transmitting first information as information relating to the wireless device, receiving second information as information relating to the wireless device from an entrance unit of a second door phone device among the plurality of doorphone devices, , A control method for a door phone system.

  ADVANTAGE OF THE INVENTION According to this indication, even if a radio | wireless apparatus moves out of the radio | wireless reachable range of an entrance cordless handset, the door phone system which can continue remote watching, and the control method of a door phone system can be provided.

The figure which shows an example of the outline | summary of the door phone system which concerns on this Embodiment 1. The block diagram which shows an example of a structure of each apparatus of the door phone system which concerns on this Embodiment 1. FIG. The figure which shows an example of the object information table in this Embodiment 1. Flowchart showing an example of operation of the radio apparatus according to the first embodiment The flowchart which shows an example of operation | movement of the door phone main unit which concerns on this Embodiment 1. Sequence diagram showing an example of the operation of the door phone system in the arbitrary confirmation mode of the first embodiment Timing chart showing an example of signal transmission / reception timing between devices in the arbitrary confirmation mode of the first embodiment Sequence diagram showing an example of the operation of the door phone system in the outflow monitoring mode of the first embodiment Timing chart showing an example of signal transmission / reception timing between devices in the outflow monitoring mode of the first embodiment Sequence diagram showing an example of the operation of the door phone system in the distance display / stagnation monitoring / speed monitoring mode of the first embodiment Timing chart showing an example of signal transmission / reception timing between devices in the distance display / stagnation monitoring / speed monitoring mode of the first embodiment The figure which shows an example of the outline | summary of the door phone system which concerns on this Embodiment 2. The block diagram which shows an example of a structure of the entrance cordless handset of the door phone system which concerns on this Embodiment 2. The sequence diagram which shows an example of operation | movement of the door phone system at the time of watching operation of this Embodiment 2. Timing chart showing an example of signal transmission / reception timing between front door devices when the front door devices of the second embodiment are asynchronous with each other The flowchart which shows the operation | movement of the entrance child machine at the time of watching operation of this Embodiment 2. The figure which shows an example of the outline | summary of the door phone system which concerns on this Embodiment 3. Sequence diagram showing an example of the operation of the door phone system for constantly watching according to the third embodiment The sequence diagram which shows the modification of an example of operation | movement of the door phone system which always watches over this Embodiment 3.

The present invention, which has been made to solve the above-described problems, includes a doorphone parent device disposed indoors, and an entrance child device that transfers a signal received from a wireless device that moves together with a moving body to the doorphone parent device. A door phone system including a plurality of door phone devices, wherein an entrance cordless handset of the first door phone device among the plurality of door phone devices cannot receive a signal from the wireless device. It is a door phone system characterized in that information on the wireless device is transmitted to and received from an entrance cordless handset of the second door phone device.

  As a result, the door phone of the door phone device can obtain information about the wireless device from the door phone of the other door phone device, so remote monitoring continues even if the wireless device moves outside the wireless reachable range of the door phone device. It becomes possible.

Also, this allows the door phone of the door phone device to obtain information about the wireless device from the door phone of another door phone device when the wireless device moves out of the wireless reachable range of the door phone device. Remote monitoring can be continued.

  In addition, the present invention further provides a signal from the wireless device when the front door device of the second door phone device receives the first information as information on the wireless device from the front door device of the first door phone device. And transmitting the second information as the information related to the wireless device to the entrance unit of the first door phone device.

  As a result, the door unit of the other door phone device (second door phone device) receives a signal from the wireless device, and transmits information about the wireless device to the door phone device of the door phone device (first door phone device). As long as the signal from the wireless device can be received in the door unit of the other door phone device (second door phone device), remote monitoring can be continued even if the wireless device moves out of the wireless reachable range of the door device.

  In addition, the present invention further provides the entrance device of the third door phone device among the plurality of door phone devices when the entrance device of the second door phone device cannot receive a signal from the wireless device. The third information is transmitted as information about the wireless device.

  As a result, when the front door unit of the other door phone device (second door phone device) cannot receive a signal from the wireless device, the information about the wireless device from the front door device of the other door phone device (third door phone device). Therefore, even when the front cordless handset of another door phone device (second door phone device) cannot receive a signal from the wireless device, remote monitoring can be continued.

  In addition, according to the present invention, when the front door unit of the second door phone device receives fourth information as information on the wireless device from the front door device of the third door phone device, the first door phone Fifth information is transmitted as information related to the wireless device to the entrance cordless handset of the device.

  As a result, when the front door unit of the other door phone device (second door phone device) cannot receive a signal from the wireless device, the information about the wireless device from the front door device of the other door phone device (third door phone device). And any other door phone device (second, third, fourth,... Door phone device) for transmitting information related to the wireless device to the door station of the door phone device (first door phone device). As long as the signal from the wireless device can be received by the entrance slave unit of (), remote monitoring can be continued even if the wireless device moves outside the wireless reachable range of the entrance slave unit.

  Further, according to the present invention, information on the wireless device includes information on a signal received from the wireless device, information on requesting information on the signal, request source / request destination information on the request, and response on the request. And at least one of the registration information of the wireless device.

  As a result, the door phone of the door phone device receives information on the signal received from the wireless device with the door phone of the other door phone device, information requesting information, request request source / request destination information, and request. Since at least one of response information and registration information is sent and received, remote monitoring can be continued with reference to various information related to the wireless device even if the wireless device moves out of the wireless reachable range of the entrance unit. It becomes.

In addition, the present invention is composed of a plurality of doorphone devices having a doorphone master unit disposed in a room and an entrance cordless handset that transfers a signal received from a wireless device that moves together with a moving body to the doorphone master unit. The door phone system of the first door phone device in the plurality of door phone devices is connected to the door phone device of the second door phone device in the plurality of door phone devices. and receive information about, the doorphone master station of the first intercom apparatus includes a display unit for displaying various information, and a display control unit that controls to display the location information of the wireless device on the display unit And the display control unit includes the information related to the wireless device received from the entrance device of the second door phone device by the entrance device of the first door phone device, and the complex including the second door phone device. Based of the respective positional information of the intercom device, the, and displays the location information of the wireless device on the display unit.

  As a result, the door phone master unit of the door phone device can obtain information about the wireless device from the door unit of the other door phone device and display its position information, so the wireless device moves out of the wireless reachable range of the door unit. Even so, remote monitoring can be continued while confirming the position.

  Further, according to the present invention, the entrance unit of the second door phone device includes an imaging unit that captures an image of the periphery of the entrance unit. When the first information is received, the imaging unit performs imaging by the imaging unit. The transmitted image is included in the second information and transmitted.

  As a result, the door phone device can obtain a peripheral image of the front door device taken by the front door device of another door phone device, so even if the wireless device moves out of the wireless reachable range of the front door device, the peripheral image is displayed. Remote monitoring can be continued while referring to it.

  In addition, the present invention is composed of a plurality of doorphone devices having a doorphone master unit disposed in a room and an entrance cordless handset that transfers a signal received from a wireless device that moves together with a moving body to the doorphone master unit. The door phone system of the first door phone device in the plurality of door phone devices is connected to the door phone device of the second door phone device in the plurality of door phone devices. Transmitting first information as information relating to, and receiving second information as information relating to the wireless device from an entrance cordless handset of the second door phone device among the plurality of door phone devices. This is a control method for a door phone system.

  Accordingly, it is possible to provide a control method for a door phone system that can continue remote monitoring even when the wireless device moves out of the wireless reachable range of the entrance cordless handset.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  In the first embodiment, the basic configuration and operation of the door phone system according to the present embodiment will be described. In the second and third embodiments, the door phone system according to the present embodiment will be described. The configuration and operation to be applied will be described.

(First embodiment)
<Outline of doorphone system>
First, the outline | summary of the door phone system which concerns on this Embodiment is demonstrated.

  FIG. 1 is a diagram showing an example of an outline of a door phone system according to the present embodiment.

  As shown in FIG. 1, the door phone system 100 includes one or a plurality of wireless devices 300 disposed outside a building 200 that is a house, an entrance slave device 400 disposed at the entrance of the building 200, and the building 200. Door phone base unit 500 disposed in the room. The target area for remote monitoring in the present embodiment is an area having a radius of several hundred meters with the building 200 as the center.

  Wireless communication 101 is possible between each wireless device 300 and the entrance slave device 400. Wired communication 102 is possible between the entrance slave device 400 and the door phone master device 500. In addition to the normal door phone function, the entrance slave device 400 has a function of periodically transmitting a standby signal to the outside, and a function of transferring information between each wireless device 300 and the door phone parent device 500. .

The first and second wireless devices 300 ₁ and 330 ₂ are carried by a child 210 and an elderly person 220, respectively, who are watching targets. That is, each wireless device 300 is moved together with the watching target outdoors.

  Each wireless device 300 receives the above-described standby signal periodically transmitted from the entrance slave device 400, and measures the received signal strength (RSSI: Received Signal Strength Indicator) of the standby signal at the position of the wireless device 300. And each radio | wireless apparatus 300 transmits a predetermined | prescribed notification signal to the entrance cordless handset 400 based on the measured received signal strength. The notification signal transmitted to the entrance child device 400 is transferred from the entrance child device 400 to the door phone parent device 500.

  When receiving the notification signal, door phone master device 500 executes a watching process for notifying indoor user 230 of the state of the watching target.

  The received signal strength of the radio signal is inversely proportional to the distance from the transmission position to the reception position. Therefore, when the transmission power of the standby signal is known, the received signal strength in the wireless device 300 indicates an approximate distance from the entrance device 400 to the wireless device 300.

  The distance from the entrance cordless handset 400 to the wireless device 300 is the distance from the entrance cordless handset 400 to the watching target. Therefore, the door phone system 100 can perform the watching process regarding the position of the watching target and the state of the change.

  The remote watching operation modes executed by the door phone system 100 include an arbitrary confirmation mode, an outflow monitoring mode, a distance display mode, a stagnation monitoring mode, and a take-out monitoring mode.

  The arbitrary confirmation mode is a mode for the user 230 to confirm from the room whether or not the watching target is located in a predetermined area within the target area at an arbitrary timing. The predetermined area is, for example, an area slightly inside the above-mentioned residential site.

  The outflow monitoring mode is a mode for notifying the user 230 of the fact that the watching target has flowed out of the predetermined area.

  The distance display mode is a mode for sequentially displaying the approximate distance from the entrance child machine to be watched indoors.

  The stagnation monitoring mode is a mode for notifying the user 230 of the fact that the distance from the entrance child device to be watched does not change for a predetermined time or more. The time when the distance does not change for a predetermined time or more is, for example, when the elderly person 220 who is the object of watching falls in a bad condition.

  The take-out monitoring mode is a mode for notifying the user 230 of the fact that the distance from the entrance child device to be watched continuously changes for a predetermined time or longer. The time when the distance continuously changes for a predetermined time or longer is when, for example, a bicycle placed on the side of the entrance, which is a watching target, is taken out by someone.

  The same operation mode may be set for all the radio apparatuses 300, or different operation modes may be set for each radio apparatus 300. The setting of the operation mode for each device may be performed by an operation on an operation interface provided in each device, or may be performed by a control signal from the doorphone parent device 500.

<Configuration of each device>
Next, the configuration of each device of the door phone system 100 will be described.

  FIG. 2 is a block diagram illustrating an example of the configuration of each device of the door phone system 100.

  2, the wireless device 300 includes an identification information storage unit 310, a device communication unit 320, an RSSI measurement unit 330, a notification generation unit 340, and an alarm output unit 350.

  The identification information storage unit 310 stores the identification information of the wireless device 300 in which the identification information storage unit 310 is provided. The identification information may be set by the user via an operation interface (not shown) such as a key switch provided in the wireless device 300, or may be set in advance when the wireless device 300 is shipped from the factory. It may be a thing.

  The device communication unit 320 includes a wireless communication circuit and an antenna, and performs bidirectional wireless communication with the entrance slave device 400. In the present embodiment, as a communication method of such wireless communication, even when the wireless device 300 is located behind the building, it is a communication method with high radio wave diffractive properties that can reliably perform wireless connection, A communication method capable of realizing a communication distance of about several hundred meters is adopted. As such a communication method, for example, specific low-power wireless communication conforming to ARIB STD-T108, which is a standard of 920 MHz band, 1900 MHz band wireless communication of DECT (Digital Enhanced Cordless communications), and the like can be cited.

  In addition, the apparatus communication part 320 transmits the input notification signal to the entrance cordless handset 400, when the notification signal mentioned later is input from the notification production | generation part 340. FIG. When the device communication unit 320 receives a standby signal from the entrance slave device 400, the device communication unit 320 outputs the received standby signal to the RSSI measurement unit 330. When the device communication unit 320 receives the RSSI request signal from the entrance slave device 400, the device communication unit 320 outputs the received RSSI request signal to the notification generation unit 340. When the device communication unit 320 receives an alarm instruction signal from the front door slave 400, the device communication unit 320 outputs the received alarm instruction signal to the alarm output unit 350.

  Here, as described above, the standby signal is a signal that the front door device 400 periodically transmits to the outside of the room. The RSSI request signal is a signal generated by the intercom base unit 500 and is a signal that requests the wireless device 300 to return a measured value of the received signal strength. The alarm instruction signal is a signal generated by the door phone parent device 500 and is a signal that instructs the wireless device 300 to output an alarm.

  The RSSI measurement unit 330 includes an RSSI circuit, measures the received signal strength of the signal every time a standby signal is input, and outputs the measured value to the notification generation unit 340.

  The notification generation unit 340 records the input received signal strength value. Then, the notification generation unit 340 receives the RSSI notification signal or the outflow notification signal (hereinafter, collectively referred to as “notification signal”) according to the set operation mode and the recorded received signal strength value. Transmit to handset 400. At this time, the notification generation unit 340 reads the identification information of the wireless device 300 from the identification information storage unit 310 and includes it in the notification signal to be transmitted.

  Here, the RSSI notification signal is a signal indicating the value of the measured received signal strength. The outflow notification signal is a signal indicating that the wireless device 300 has flowed out of the predetermined area. The outflow signal may include a value of the received signal strength so that the outflow position can be grasped on the entrance handset 400 side or the door phone base unit 500 side.

  The notification generation unit 340 generates a call signal for calling a user in the room when the call button provided in the wireless device 300 is pressed, and transmits the call signal to the entrance slave device 400 via the device communication unit 320. May be. The notification generation unit 340 desirably includes the identification information of the wireless device 300 in the call signal.

  The alarm output unit 350 includes a loudspeaker, a light emitting element, or a vibration element. When an alarm instruction signal is input, the alarm output unit 350 performs an alarm operation including at least one of sound, light, and vibration.

  Note that the alarm output unit 350 receives a response signal indicating that the call signal has reached the doorphone parent device 500 when a response signal from the doorphone parent device 500 to the call signal is received by the device communication unit 320. Light or vibration may be output. In addition, the alarm operation performed by the alarm output unit 350 may not only alert the object to be watched over but also threaten or repel a suspicious person.

  The entrance child device 400 includes an outdoor communication unit 410, an indoor communication unit 420, and an information relay unit 430.

  The outdoor communication unit 410 includes a wireless communication circuit and an antenna, and performs the above-described bidirectional wireless communication with the wireless device 300. When the outdoor communication unit 410 receives a signal from the wireless device 300, the outdoor communication unit 410 outputs the received signal to the information relay unit 430. When the signal is input from the information relay unit 430, the outdoor communication unit 410 receives the input signal. Transmit to the wireless device 300. Moreover, the outdoor side communication part 410 transmits the standby signal of predetermined transmission power regularly with a predetermined period toward the outdoor.

  The indoor side communication unit 420 includes a wired communication circuit and a communication cable connection unit, and performs bidirectional wired communication with the doorphone parent device 500. When the signal is input from the information relay unit 430, the indoor side communication unit 420 transmits the input signal to the doorphone parent device 500 and receives the signal from the doorphone parent device 500. Is output to the information relay unit 430.

  The information relay unit 430 relays signals between the outdoor side communication unit 410 and the indoor side communication unit 420. This relayed signal includes the above-mentioned RSSI request signal, alarm instruction signal, RSSI notification signal, and outflow notification signal.

  Although not shown in the figure, the front door device 400 has functions of a conventional front door device such as a doorbell button, a loudspeaker that outputs sound sent from the door phone main device 500, and a camera for photographing a visitor. It further has a configuration to be realized. Further, the entrance slave device 400 may further include a wireless communication unit that performs wireless communication with the door phone master device 500 and an information terminal (not shown) such as a mobile phone used by the user. Such wireless communication is, for example, wireless communication complying with the DECT standard described above.

  The intercom base unit 500 includes a target information storage unit 510, a base unit communication unit 520, a watch processing unit 530, and an instruction request generation unit 540.

  The target information storage unit 510 stores a target information table. The target information table is a table in which watching target information indicating a watching target carrying the wireless device 300 is described in association with identification information of the wireless device 300.

  FIG. 3 is a diagram illustrating an example of the target information table.

  As illustrated in FIG. 3, the target information table 610 describes a name 612 and an image 613 in association with the identification information 611 of the wireless device 300.

  The name 612 is a name representing the watching target. The image 613 is an image showing the appearance of the watching target, for example, an image obtained by shooting the watching target. That is, the name 612 and the image 613 are watching target information. When different operation modes are set for each watching target, the target information table 610 may also describe information indicating the operation mode.

  The contents of the target information table 610 are set by the user via a user interface (not shown) including a display with a touch panel, a key switch, and a loudspeaker, for example. Alternatively, the contents of the target information table 610 are set, for example, by receiving captured image data from an information terminal described later. The contents of the target information table 610 may be set in advance at the time of factory shipment.

  Thus, by associating and setting the ID (identification information 611) of the wireless device 300 as a sensor and the photograph (image 613) of the installation location, it is possible to easily grasp which sensor has reacted. It becomes possible to do. For this reason, for example, one wireless device 300 can be used by switching to various uses, such as attaching and using what a child has to a bicycle.

  2 includes a wired communication circuit and a communication cable connection unit, and performs the above-described bidirectional wired communication with the front door device 400. Then, when receiving the above notification signal from the front door slave unit 400, the base unit communication unit 520 watches the received signal and outputs it to the processing unit 530. When the above-mentioned RSSI request signal or alarm instruction signal (hereinafter collectively referred to as “instruction request signal”) is input from the instruction request generation unit 540, the base unit communication unit 520 uses the input signal as the entrance terminal. 400.

The watch processing unit 530 performs watch processing according to the set operation mode when the above notification signal is input from the parent device communication unit 520. For example, the outflow monitoring mode, the child 210 ₁ flows out from a predetermined area. In this case, the watching processing unit 530 performs an alarm operation including at least one output of sound and light from the above-described loudspeaker, light emitting lamp, and the like provided in the doorphone parent device 500. The watch unit 530, associated with the wireless device 300 _first identification information child 210 ₁ is carried, the name and picture of the child 210 _1, is displayed on the display.

  The watch processing unit 530 displays the above-described response signal and outputs the response signal to the base unit communication unit 520 when the call signal is received by the base unit communication unit 520. You may transmit to the entrance cordless handset 400 via.

  For example, the instruction request generation unit 540 receives a state confirmation operation and an alerting operation from the user via the above-described user interface. Here, the state confirmation operation is a predetermined operation for the user to confirm the state to be watched over. The alerting operation is a predetermined operation for the user to alert the object to be watched, such as returning home. The instruction request generation unit 540 generates an RSSI request signal and outputs the RSSI request signal to the parent device communication unit 520 when the state confirmation operation is performed. Also, the instruction request generation unit 540 generates an alarm instruction signal and outputs the alarm instruction signal to the parent device communication unit 520 when an alerting operation is performed.

  In addition, the instruction request generation unit 540 may receive designation of a watching target (that is, the wireless device 300) from the user when accepting the state confirmation operation and the alerting operation. Then, the instruction request generation unit 540 may limit the instruction request destination by the above instruction request signal to the wireless device 300 corresponding to the designated watching target.

  As a method of limiting the instruction request destination wireless device 300, there are a method of instructing the entrance slave device 400 as a signal transmission destination and a method of including identification information of the wireless device 300 as an instruction target in the signal. In the former case, the information relay unit 430 of the front door device 400 needs to transmit a signal only to the designated wireless device 300. In the latter case, the device communication unit 320, the notification generation unit, or the alarm output unit 350 of the wireless device 300 determines whether the identification information included in the signal matches the identification information stored in the identification information storage unit 310. It is necessary to determine and determine whether to execute the process.

  Although not shown in the figure, door phone base unit 500 is a control unit for controlling a call between entrance cordless handset 400 and door phone base unit 500, a door unlocking / unlocking, and a call for starting a call with a visitor. It further has a configuration for realizing a conventional door phone master unit function such as a start button. Moreover, the door phone parent device 500 may include a wireless communication unit that performs wireless communication with the entrance child device 400 or the above-described information terminal. Such wireless communication is, for example, wireless communication compliant with the DECT standard. Furthermore, door phone master device 500 may include a terminal communication control unit that instructs the information terminal to output a beep sound and watching target information.

  Note that, for example, the wireless device 300, the entrance slave device 400, and the doorphone master device 500 are respectively a CPU (Central Processing Unit), a storage medium such as a ROM (Read Only Memory) that stores a control program, and a RAM (Random Access). Memory) and the like. In addition, the wireless device 300, the entrance cordless handset 400, and the intercom base phone 500 each have a signal line for connecting the hardware, and a power supply unit such as a storage battery or a power connection unit. In this case, the function of each unit of each device described above is realized by the CPU executing the control program.

  The door phone system 100 having such a configuration monitors the position of the watching target in the monitoring target area and the state of its change, using the outdoor wireless communication area of the door station 400 as a monitoring target area, and notifies the user of necessary notifications. It can be carried out.

  The wireless communication area of the entrance cordless handset 400 is an area having a radius of several hundred meters if the above-described specific low power wireless communication is used, for example. Therefore, if the door phone system 100 is used, it is possible to remotely monitor such a wide target area.

<Operation of each device>
Next, the part relevant to the present invention in the operation of each apparatus will be described. In addition, since the part relevant to this invention among the operation | movement of the entrance child machine 400 is fundamentally only the transmission process and signal transfer process of the above-mentioned standby signal, the illustration and detailed description about this are abbreviate | omitted.

  FIG. 4 is a flowchart illustrating an example of the operation of the wireless device 300.

  First, in step S1010, the RSSI measurement unit 330 receives a standby signal via the device communication unit 320.

  In step S1020, RSSI measurement unit 330 measures the value of the received signal strength (RSSI) of the standby signal. The measured value is recorded by the notification generation unit 340.

  In step S1030, notification generation unit 340 determines whether or not the arbitrary confirmation mode is set.

  When the arbitrary confirmation mode is set (S1030: YES), the notification generation unit 340 advances the process to step S1040. Moreover, the notification production | generation part 340 advances a process to below-mentioned step S1050, when operation modes other than arbitrary confirmation mode are set (S1030: NO).

  In step S <b> 1040, the notification generation unit 340 determines whether an RSSI request signal has been received by the device communication unit 320.

  When the RSSI request signal has not been received (S1040: NO), the notification generation unit 340 returns the process to step S1010 and continues monitoring whether or not a signal is received. Moreover, the notification production | generation part 340 advances a process to step S1060, when an RSSI request signal is received (S1040: YES).

  In step S <b> 1060, the notification generation unit 340 transmits an RSSI notification signal indicating the recorded measurement value of the received signal strength to the front door device 400 via the device communication unit 320. Then, the notification generation unit 340 returns the process to step S1010.

  Note that various values indicating the current distance of the wireless device 300, such as a weighted average value of a plurality of latest measurement values, can be adopted as the measurement value of the received signal strength to be transmitted.

  In step S1050, the notification generation unit 340 determines whether or not the outflow monitoring mode is set.

  When the outflow monitoring mode is not set (S1050: NO), the notification generation unit 340 proceeds with the process to step S1060 and transmits an RSSI notification signal. Moreover, the notification production | generation part 340 advances a process to step S1070, when the outflow monitoring mode is set (S1050: YES).

  In step S1070, the notification generation unit 340 determines whether the recorded measurement value (RSSI) of the received signal strength is equal to or less than the first value. The first value is, for example, the value of the received signal strength of the standby signal received by the wireless device 300 when the wireless device 300 is located at the outer edge of the predetermined area.

  As values to be compared with the first value, various values indicating that the wireless device 300 is located at the outer edge of a predetermined area, such as a weighted average value of a plurality of latest measured values, are adopted. can do.

  If the measurement value of the received signal strength is not equal to or less than the first threshold (S1070: NO), the notification generation unit 340 returns the process to step S1010. Moreover, the notification production | generation part 340 advances a process to step S1080, when the measured value of received signal strength is below a 1st threshold value (S1070: YES).

  In step S1080, the notification generation unit 340 transmits the outflow notification signal to the front door device 400 via the device communication unit 320. Then, the notification generation unit 340 returns the process to step S1010.

  Radio apparatus 300 further sequentially determines whether or not an alarm instruction signal has been received by alarm output unit 350, and performs processing to output an alarm according to the instruction when the alarm instruction signal is received.

  With such an operation, the wireless device 300 can perform processing according to the set operation mode, such as transmission of a notification signal.

  FIG. 5 is a flowchart showing an example of the operation of door phone parent device 500.

  First, in step S2010, the instruction request generation unit 540 determines whether a state confirmation operation has been performed on the user interface.

  When the state confirmation operation is not performed (S2010: NO), the instruction request generation unit 540 advances the process to step S2020 described later. Moreover, the instruction | indication request production | generation part 540 advances a process to step S2030, when mode confirmation operation is performed (S2010: YES).

  In step S2030, the instruction request generation unit 540 transmits an RSSI request signal to the front child device 400 via the parent device communication unit 520. As a result, an RSSI notification signal is received by base unit communication section 520 as a response to the RSSI request signal.

  In step S2040, watch processing unit 530 determines whether the received signal strength value (RSSI) indicated by the received RSSI notification signal is equal to or less than the first threshold value.

  If the value of the received signal strength is not less than or equal to the first threshold value (S2040: NO), the watching processing unit 530 advances the process to step S2020 described later. Moreover, the watching process part 530 advances a process to step S2050, when the value of received signal strength is below a 1st threshold value (S2040: YES).

  In step S2050, the watching processing unit 530 performs an alarm operation such as outputting sound or light using the user interface provided in the wireless device 300 or the information terminal described above. Then, the watching processing unit 530 advances the processing to step S2060 described later.

  In step S2020, watch processing unit 530 determines whether or not the outflow notification signal has been received by base unit communication unit 520.

  If the outflow notification signal is received (S2020: YES), the watching processing unit 530 advances the process to step S2050 and performs an alarm operation. In addition, if the outflow notification signal is not received (S2020: NO), the watching processing unit 530 advances the process to step S2070.

  In step S2070, watching processing unit 530 determines whether or not the RSSI notification signal is received in base unit communication unit 520.

  If the RSSI notification signal is not received (S2070: NO), the watching processing unit 530 advances the process to step S2060 described later. Moreover, the watching process part 530 advances a process to step S2080, when an RSSI notification signal is received (S2070: YES).

  In step S2080, the watching processing unit 530 records the received signal strength value (RSSI) indicated by the received RSSI notification signal.

  In step S2090, watch processing unit 530 determines whether distance display mode is set for wireless device 300 that is the transmission source of the RSSI notification signal.

  If the distance display mode is set (S2090: YES), the watching processing unit 530 advances the process to step S2100. Moreover, when the distance display mode is not set (S2090: NO), the watching processing unit 530 advances the processing to step S2110 described later.

  In step S2100, the watching processing unit 530 displays the distance corresponding to the received signal strength value (RSSI) indicated by the received RSSI notification signal on the display. Then, the watching processing unit 530 advances the process to step S2110.

  For example, the watching processing unit 530 describes three numerical ranges obtained by dividing the range of values that can be taken by the received signal strength, and rough distance categories such as “close”, “slightly far”, and “far”. A table is stored in advance. Then, the watching processing unit 530 refers to such a table, acquires a distance category corresponding to the measured value of the received signal strength, and displays the acquired distance category.

  Note that various values indicating the approximate distance of the wireless device 300, such as the average value of the most recent measurement values, can be adopted as the values to be referred to in the table.

  In step S2110, the watching processing unit 530 determines whether or not the stagnation monitoring mode is set for the wireless device 300 that is the transmission source of the RSSI notification signal.

  If the stagnation monitoring mode is set (S2110: YES), the watching processing unit 530 advances the process to step S2120. Moreover, when the stagnation monitoring mode is not set (S2110: NO), the watching processing unit 530 advances the processing to step S2130 described later.

  In step S2120, the watching processing unit 530 determines whether the time during which the received signal strength value (RSSI) indicated by the received RSSI notification signal does not change, for example, ± 6 dB or more exceeds the second value. The second value is, for example, 3 minutes.

  Note that as the time to be compared with the second value, various values indicating that the wireless device 300 remains continuously at one place, such as an average value of the most recent measurement values, are employed. be able to.

  If the time during which the value of the received signal strength does not change exceeds the second value (S2120: YES), the watching processing unit 530 advances the process to step S2050 and performs an alarm operation. Moreover, the watching process part 530 advances a process to step S2130, when the time when the value of a received signal strength does not change does not exceed the 2nd value (S2120: NO).

  In step S2130, the watching processing unit 530 determines whether the take-out monitoring mode is set for the wireless device 300 that is the transmission source of the RSSI notification signal.

  If the take-out monitoring mode is set (S2130: YES), the watching processing unit 530 advances the process to step S2140. In addition, when the take-out monitoring mode is not set (S2130: NO), the watching processing unit 530 advances the process to step S2060 described later.

  In step S2140, the watching processing unit 530 determines whether or not a time (for example, a time when the received signal strength value (RSSI) indicated by the received RSSI notification signal changes (for example, a time when changing ± 6 dB or more) changes exceeds the third value). Determine whether. That is, the watching processing unit 530 determines whether or not the time during which the received signal strength continues to fluctuate (hereinafter referred to as “fluctuation continuation time”) is equal to or greater than the third value. The third value is, for example, a value corresponding to the time required for the bicycle to travel from the front door 400 to the nearest intersection.

  Note that, as the variation continuation time, for example, various values indicating that the wireless device 300 does not remain continuously in one place, such as an average value of a plurality of latest measurement values, can be employed.

  If the variation duration time is greater than or equal to the third value (S2130: YES), the watching processing unit 530 advances the process to step S2050 and performs an alarm operation. In addition, when the fluctuation continuation time is not equal to or greater than the third value (S2130: NO), the watching processing unit 530 advances the process to step S2060.

  Note that the alarm operation in step S2050 may have different contents depending on the contents of the operation mode or the wireless device 300 that is the notification target. In other words, it is desirable that the content of the alarm operation indicates what kind of watching target may be in what state.

  In step S2060, the watching processing unit 530 determines whether or not the end of the remote watching is instructed by a user operation or the like.

  If the watch processing unit 530 is not instructed to end the remote watch (S2060: NO), the watch processing unit 530 returns the processing to step S2010, and continues monitoring whether or not there is an operation and whether or not a signal is received. Moreover, the watch processing part 530 complete | finishes a series of operation | movement, when the completion | finish of remote watch is instruct | indicated (S2060: YES). Note that the watch processing unit 530 may receive an instruction to end the remote watch for each wireless device 300.

  In addition, door phone base unit 500 further sequentially determines the presence / absence of the state confirmation operation and the alerting operation in instruction request generation unit 540, and when any of the operations is performed, the corresponding instruction request signal is transmitted to the front terminal unit. The process of transmitting to 400 is performed.

  With such an operation, door phone parent device 500 can perform processing according to the set operation mode, such as an alarm operation or an instruction request signal transmission.

<System operation in each operation mode>
Next, an example of the operation of the door phone system 100 in each operation mode will be described.

<Optional confirmation mode>
FIG. 6 is a sequence diagram illustrating an example of the operation of the door phone system 100 in the arbitrary confirmation mode. FIG. 7 is a timing chart showing an example of signal transmission / reception timing between devices in the arbitrary confirmation mode.

  As shown in FIG. 7, a transmission period 711 in which transmission to the wireless device 300 can be performed is set in the entrance child device 400 at a predetermined time interval T (for example, 2 seconds). In front door device 400, a reception period 712 for receiving from wireless device 300 is set immediately after each transmission period 711. In addition, a reception period 714 is set in the wireless device 300 in synchronization with the transmission period 711 of the entrance slave device 400.

  As shown in FIGS. 6 and 7, the front door device 400 periodically transmits a standby signal in each transmission period 711 (S <b> 3101).

  Then, when the state confirmation operation is performed by the user (S3120), door phone parent device 500 transmits an RSSI request signal to door phone parent device 500 (S3103). In the transmission period 711, the front door device 400 transmits an RSSI request signal to the wireless device 300 (S3104).

  Then, the wireless device 300 transmits an RSSI notification signal indicating the value of the received signal strength of the received standby signal to the entrance slave unit 400 in the transmission period 715 synchronized with the reception period 714 of the entrance slave unit 400 (S31050). . The front door device 400 transfers the received RSSI notification signal to the doorphone parent device 500 (S3106). Intercom base phone 500 receives this RSSI notification signal, for example, in reception period 712 immediately after transmission period 711 in which the RSSI request signal is transmitted.

  Intercom base unit 500 compares the received signal strength value (RSSI) indicated by the received RSSI notification signal with the first value (S3107). Then, intercom base phone 500 is notified that the watching target is in the predetermined area (in-area notification) or an alarm notifying that the watching target is not in the predetermined area, according to the comparison result. Output.

  As described above, in the arbitrary confirmation mode, the user can confirm from the room whether or not the watching target is located in a predetermined area outside the room at an arbitrary timing.

<Outflow monitoring mode>
FIG. 8 is a sequence diagram illustrating an example of the operation of the door phone system 100 in the outflow monitoring mode, and corresponds to FIG. FIG. 9 is a timing chart showing an example of signal transmission / reception timing between devices in the outflow monitoring mode, and corresponds to FIG. Portions corresponding to those in FIGS. 6 and 7 are denoted by the same reference numerals, and description thereof is omitted.

  In the outflow monitoring mode, for example, the wireless device 300 determines whether or not a condition that a received signal strength value (RSSI) that is equal to or lower than the first value is continuously measured a predetermined number of times is satisfied (S3201). ). Then, when such a condition is satisfied, the wireless device 300 transmits an outflow notification signal to the front door device 400 in the transmission period 715 (S3202). The front door device 400 transfers the received outflow notification signal to the doorphone parent device 500 (S3203).

  Receiving the outflow notification signal, the intercom base phone 500 performs an alarm output such as displaying a corresponding watching target image (S3204). When a user who notices such an alarm output performs an alerting operation, door phone parent device 500 transmits an alarm instruction signal to entrance child device 400 (S3206). In the transmission period 711, the front door device 400 transmits an alarm instruction signal to the wireless device 300 (S3107).

  The wireless device 300 may immediately output an alarm, but may receive an audio signal from the doorphone parent device 500 by returning a confirmation signal (S3208, S3209), for example (S3210, S3211). In this case, for example, the wireless device 300 returns a confirmation signal again (S3212, S3213), converts the received voice signal into a voice, and outputs it as an alarm (S3214). Door phone base unit 500 may store a voice signal such as “Come back” in advance, or may receive a voice input from the user and convert it into a voice signal. When receiving voice input from the user, the alerting operation may be, for example, a call button pressing operation.

  In addition, the wireless device 300 may perform an alarm operation such as outputting a sound when the outflow notification signal is transmitted to the front door device 400.

  As described above, in the outflow monitoring mode, when the watching target moves out of a predetermined area outside the room, the user can immediately know the fact in the room and can warn the watching target. .

<Distance monitoring / stagnation monitoring / take-out monitoring mode>
FIG. 10 is a sequence diagram showing an example of the operation of door phone system 100 in the distance display mode, the stagnation monitoring mode, and the carry-out monitoring mode, and corresponds to FIGS. 6 and 8. FIG. 11 is a timing chart showing an example of signal transmission / reception timing between devices in the distance display mode, the stagnation monitoring mode, and the take-out monitoring mode, and corresponds to FIGS. 7 and 9. Portions corresponding to those in FIGS. 6 to 9 are denoted by the same reference numerals, and description thereof is omitted.

  In the distance monitoring / stagnation monitoring / take-out monitoring mode, for example, every time the wireless device 300 receives a standby signal in the reception period 714, the wireless apparatus 300 transmits an RSSI notification signal to the entrance slave device 400 in the immediately subsequent transmission period 715 (S3301). ). The front door device 400 transfers the received RSSI notification signal to the doorphone parent device 500 (S3302).

  For example, each time the door phone base unit 500 receives an RSSI notification signal, the distance is based on a measured value of the received signal strength indicated by the received signal or based on a plurality of recorded recent measured values. A watching process corresponding to the monitoring / stagnation monitoring / take-out monitoring mode is performed (S3303).

  That is, intercom base phone 500 displays the distance of wireless device 300 in the distance display mode, and determines whether wireless device 300 is stationary in the stagnation monitoring mode. Further, in the take-out monitoring mode, door phone parent device 500 calculates the above-described fluctuation duration and compares it with the third value. Then, door phone parent device 500 appropriately performs an alarm operation.

  As described above, door phone system 100 according to the present embodiment measures the received signal strength of a signal transmitted from entrance unit 400 to the outside in radio apparatus 300. Then, door phone system 100 according to the present embodiment transmits a measurement value of the received signal strength or a signal indicating a determination result based on the measurement value from radio apparatus 300 to door phone master unit 500 via door unit 400. To do.

  Thereby, door phone system 100 according to the present embodiment monitors the position of the monitoring target in the monitoring target area and the state of its change, using the outdoor wireless communication area of entrance cordless handset 400 as the monitoring target area, and is necessary for the user. Notifications can be made. Therefore, door phone system 100 according to the present embodiment can perform remote monitoring even when the target area is large.

  Moreover, the door phone system 100 according to the present embodiment can be easily and inexpensively constructed as compared with the case where a large number of surveillance cameras are installed.

  Moreover, since the door phone system 100 according to the present embodiment does not require installation-type equipment such as a monitoring camera outside the room, roads, parks, parking lots, and the like outside the residential premises can be set as monitoring areas. it can.

  Moreover, since the door phone system 100 according to the present embodiment employs the above-described 920 MHz band wireless communication for outdoor wireless communication, by arranging a large number of wireless devices 300, the entire site of a house, etc. A wider area can be uniformly covered as a monitoring range.

  In this way, in the distance monitoring / stagnation monitoring / take-out monitoring mode, the user can determine the approximate distance from the building to be watched, whether the watch target is not stagnant, or whether the watch target has been taken out of the site, Can be confirmed sequentially in the room.

(Second Embodiment)
In the second embodiment, when there are a plurality of door phone devices 600 (hereinafter referred to as such) composed of the entrance child device 400 and the door phone parent device 500 described in the first embodiment, each door phone device 600 is provided. Next, the operation of the door phone system 100 capable of watching the child or the elderly carrying the wireless device 300 in cooperation with each other will be described. Except for the entrance child machine 400, the same basic configuration as that of the first embodiment is provided. For this reason, in the following description, this embodiment will be described while appropriately citing the configuration of the first embodiment.

<Outline of doorphone system>
First, the outline | summary of the door phone system which concerns on this Embodiment is demonstrated.

  FIG. 12 is a diagram showing an example of an outline of the door phone system according to the present embodiment.

  As shown in FIG. 12, the door phone system 100 is expanded when a plurality of buildings 200 described in FIG. 1 exist and a town where a child 210, an elderly person 220, and the like live (referred to as a watch town) is formed. That is, the door phone system 100 includes one or a plurality of wireless devices 300 and a plurality of door phone devices 600 including the front door device 400 and the door phone parent device 500.

  The target area for remote monitoring in the present embodiment is the entire monitoring town beyond the area of several hundred meters in radius centered on the building 200 shown in the first embodiment.

  The communication between each wireless device 300 and the entrance slave unit 400 and the communication between the entrance slave unit 400 and the door phone master unit 500 are as described with reference to FIG. In addition, FIG. 1 also illustrates that the front door device 400 has a function of periodically transmitting a standby signal to the outside and a function of transferring information between each wireless device 300 and the doorphone master device 500. It is as follows.

  Here, what is characteristic of the door phone system 100 shown in FIG. 12 is that the front door device 400 also performs wireless communication with the front door device 400 arranged outside the building 200. As a result, the remote monitoring target area in the present embodiment is extended to the entire monitoring town. Details will be described below.

<Configuration of entrance cordless handset>
FIG. 13 is a block diagram showing an example of the configuration of the entrance child device 400 of the door phone system 100 according to the present embodiment. The difference from the entrance cordless handset 400 in FIG. 2 will be described by subscripting the entrance cordless handset 400 ₁ (if necessary to distinguish from the other entrance cordless handset 400 ₂ . that adds the ability to perform other entrance door station 400 ₂ both communicate with the outdoor-side communication unit 410 also is the same) for intercom device 600, and is to the camera unit 440 is provided.

  The camera unit 440 captures an image of the periphery of the entrance child device 400 with a camera (not shown) according to a watching operation described later. The other parts are the same as in FIG.

<Operation during watching operation>
FIG. 14 is a sequence diagram illustrating an example of the operation of the door phone system 100 during the watching operation according to the present embodiment. The basic sequence between the doorphone master device 500 and the entrance slave device 400 and the basic sequence between the entrance slave device 400 and the wireless device 300 in FIG. 14 have been described in the arbitrary confirmation mode of FIG. An explanation will be given with reference to FIG.

  In addition, here, the operation in which the object to be watched is located in the watch town is confirmed as the watch operation. In order to confirm the position, a signal for requesting information from the intercom base unit 500 to the entrance terminal 400 and the wireless device 300 is referred to as a request signal, and a signal for returning information in accordance with the request signal is referred to as a response signal.

  When a watch operation button (not shown) is pressed as a watch operation in door phone master device 500 (S3501), door phone master device 500 transmits a request signal to entrance slave device 400 (S3502).

  The front door device 400 receives the request signal via the indoor side communication unit 420. Then, the request signal is transmitted to the wireless device 300 via the information relay unit 430 and the outdoor communication unit 410. For example, the RSSI request signal as the request signal described in the first embodiment is transmitted to the wireless device 300 and waits for the reception of the RSSI notification signal as the response signal.

At this time, when the wireless device 300 does not exist in the remote monitoring target area of the entrance cordless handset 400 (the entrance cordless handset 400 ₁ ) (for example, an area having a radius of several hundred meters centered on the entrance cordless handset 400 ₁ ). Does not return a response signal. Then, the front door device 400 ₁ transmits a request signal to the front door device 400 ₂ of the other door phone device 600 ₂ via the outdoor side communication unit 410 (S3503).

The front door slave 400 ₂ receives this request signal via the outdoor communication unit 410. The requester stores that the entrance door station 400 _1, this time through the outdoor communication unit 410 transmits a request signal to the radio unit 300 (S3504). Also in this case, for example, an RSSI request signal as a request signal is sent to the radio apparatus 300, and reception of an RSSI notification signal as a response signal is awaited.

Wireless device 300 when there is the entrance door station 400 ₂ alone in the target area of the remote watch, for example the entrance door station 400 from the wireless device 300 RSSI notification signal as described in the first embodiment as a response signal ₂ (S3505).

The front door slave 400 ₂ receives the response signal via the outdoor communication unit 410. At this time, since the stored request source is the entrance slave unit 400 ₁ , a response signal is transmitted to the entrance slave unit 400 ₁ via the outdoor communication unit 410 (S 3506).

At this time, information indicating that it is the front door slave 400 ₂ that has received the response signal from the wireless device 300 may be included in the response signal transmitted to the front door slave 400 ₁ . It may also be included in the response signal for transmitting image information captured by the camera unit 440 to the entrance door station 400 _1.

The front door slave 400 ₁ transmits the received response signal to the doorphone master 500 ₁ (S3507). For example, as described in the first embodiment, an RSSI notification signal as a response signal is transmitted from the front cordless handset 400 ₁ to the door phone base phone 500 ₁ .

Indoor apparatus 500 ₁ performs upon receiving the response signal, the watch process by watching processor 530 for notifying the state of the object in the room of the user 230 watching. For example, as described in the first embodiment, based on the RSSI notification signal, the distance from the entrance child device 400 (in this case, the entrance child device 400 ₂ ) to the watching target (wireless device 300) is obtained and displayed. .

Viewing object watching in the indoor apparatus 500 ₁ of the present embodiment (wireless device 300) is varied. For example, by previously storing another intercom device 600 ₂ of the position information in the target information storing section 510, it is determined in conjunction with the entrance door station 400 information which can be received a response signal from the wireless device 300, The position of the watching target (wireless device 300) can be displayed on the map.

Further, for example, by previously storing another intercom device 600 ₂ Installation information (intercom of Daredare's house) in the target information storage unit 510, similarly to judgment, the radius from the "A's house 5 m Display of “within” is also possible.

  In addition, for example, it is possible to display image information captured by the front door 400 that has received a response signal from the wireless device 300 together with the above-described display.

  In addition, although it has been described that information or image information for indicating the entrance slave device 400 that has received the response signal may be included in the response signal, the response signal may be transmitted separately. Further, request source / request destination information of the request signal may be included in the request signal, or may be transmitted separately in another signal. Further, the registration information of the wireless device 300 may be included in the request signal or the response signal, or may be transmitted separately as another signal. These signals are transmitted and received as information regarding the wireless device 300.

  In addition, installation information of other door phone devices 600 may be handled as information related to the wireless device 300, and may be transmitted and received by communication between the front door devices 400.

<Operation when the entrance units are asynchronous>
In step S3503 described in FIG. 14 described above, if not returned a response signal from the wireless device 300 to the entrance door station 400 _1, the entrance door station 400 ₁ has been described to the effect that transmits a request signal to the entrance door station 400 ₂ .

At this time, the operation for enabling signal transmission / reception between the entrance slave unit 400 ₁ and the entrance slave unit 400 ₂ even when they are not synchronized (asynchronous) will be described with reference to FIG. I will explain.

  FIG. 15 is a timing chart showing an example of signal transmission / reception timing between the front door slave devices 400 when the front door slave devices 400 of the present embodiment are asynchronous with each other. As shown in FIG. 15, a transmission period 811 in which transmission to the wireless device 300 can be performed is set in the entrance terminal 400 at a predetermined time interval T (for example, 2 seconds). In addition, a reception period 812 for performing reception from the wireless device 300 and a reception period 813 for performing reception from another entrance slave device 400 are set after each transmission period 811.

If the response signal cannot be received from the wireless device 300 even in the reception period 814 after the predetermined time has elapsed after the request signal is transmitted to the wireless device 300 in the front door device 400 ₁ , for communication with the front door device 400 ₂ , as it follows to establish a synchronization between the entrance door station 400 _2.

First, in order to the entrance door station 400 ₁ synchronized with have no entrance door station 400 ₂ receives reliably waiting signal is periodically transmitted, the entrance to include a transmission period 815 of the entrance door station 400 ₂ standby signal the reception period 816 from handset 400 ₂ extends through continuous reception. It is sufficient that the time width of the reception period 816 is the above-described predetermined time interval T.

Next, the entrance door station 400 ₁ has received the waiting signal entrance door station 400 ₂ in the receiving period 816, based on the synchronization information included in the waiting signal, the entrance door station 400 ₂ is another entrance door station 400 (entrance The request signal described in step S3503 of FIG. 14 is transmitted in the transmission period 818 in synchronization with the timing of the reception period 817 for reception from the slave unit 400 ₁ ).

In this manner, the entrance slave device 400 ₂ can receive the request signal from the entrance slave device 400 ₁ during the reception period 817.

Hereinafter, the entrance door station 400 ₂ transmits a request signal described in step S3504 to the wireless device 300 during the transmission period 819. The entrance door station 400 _2, the wireless device 300 receives the response signal described in step S3505 of transmitting the request signal after reception.

  In the same manner, the response signal can be returned to the request source of the request signal by continuously receiving the standby signal and sequentially synchronizing it regardless of how many entrance slave units 400 are passed through.

<Operation of entrance cordless handset during watching operation>
FIG. 16 is a flowchart showing the operation of the front door device 400 during the watching operation of the present embodiment. Details will be described by focusing on the operation of the front door slave 400 described with reference to the sequence in FIG.

  The front door device 400 determines whether a request signal is received from the door phone parent device 500 or another front door device 400 (S4010). If no request signal is received (S4010: No), the process returns to step S4010 to wait for reception. If a request signal is received (S4010: Yes), the wireless device 300 is searched (operation for transmitting a request signal to the wireless device 300 and waiting for a response signal) (S4020).

  The front door device 400 determines whether a response signal is received from the wireless device 300 or another front door device 400 (S4030). If no response signal is received (S4030: No), a request signal is transmitted to the other front door 400 (S4040). And it returns to step S4030 and waits for reception of a response signal.

  If a response signal is received in step S4030 (S4030: Yes), the response signal is transmitted to the request source (S4050). In other words, when the request signal comes from its own doorphone parent device 500, a response signal is transmitted to doorphone parent device 500. If the request signal is coming from another entrance slave device 400, a response signal is transmitted to the other entrance slave device 400.

In the sequence of FIG. 14, the description has been given of the case where there are two entrance slave devices 400, that is, the entrance slave device 400 ₁ and the entrance slave device 400 ₂ , but as described above, any number of entrance slave devices 400 may be used.

  When the wireless device 300 is not found in the remote monitoring target area of a certain entrance cordless handset 400, a request signal is transmitted to another entrance cordless handset 400, and also in the remote monitoring target area of the entrance cordless handset 400 alone. If the wireless device 300 is not found, a request signal is transmitted to another entrance slave device 400.

  The entrance slave device 400 in which the wireless device 300 is found transmits a response signal to the requesting entrance slave device 400, and the requesting entrance slave device 400 further transmits a response signal to another requesting entrance slave device 400. Send.

  Finally, a response signal is transmitted to the doorphone parent device 500 that transmitted the request signal first.

  In addition, even when a request signal is received from another entrance cordless handset 400, the request signal may be once transferred to the doorphone master set 500, and the wireless device 300 may be searched under the control of the doorphone master set 500. Similarly, even when a response signal is not returned in the front door slave device 400, a request signal may be transmitted to another front door slave device 400 under the control of the doorphone master device 500. Thereby, the front door 400 can be configured simply.

  As described above, in the door phone system 100, remote monitoring can be continued even if the wireless device moves out of the wireless reachable range of the entrance cordless handset.

  As described above, in the door phone system 100, even if the wireless device moves out of the wireless reachable range of the front door device, remote monitoring can be continued in cooperation with the front door device of another door phone device.

  Thus, in the door phone system 100, even if the wireless device moves outside the wireless reachable range of the entrance phone, if the wireless device is within the wireless reachable range of any doorphone device, remote monitoring is performed. Can continue.

  Further, in the door phone system 100, even if the wireless device moves out of the wireless reachable range of the entrance cordless handset, remote monitoring can be continued while confirming the position.

  Moreover, in the door phone system 100, even if the wireless device moves out of the wireless reachable range of the entrance cordless handset, it is possible to continue the remote watching while referring to the surrounding image.

(Third embodiment)
In the third embodiment, similarly to the second embodiment, when there are a plurality of door phone devices 600, the front cordless handsets 400 of the door phone devices 600 cooperate with each other so that the child or child carrying the wireless device 300 can cooperate. It is a system that can watch the elderly.

  The difference from the second embodiment is that the front door device 400 of each door phone device 600 is always performing an operation for watching.

  Hereinafter, the operation of the door phone system 100 will be described. Each device has a basic configuration similar to that of the second embodiment. For this reason, this embodiment is described, citing the configuration of the second embodiment as appropriate.

<Outline of doorphone system>
First, the outline | summary of the door phone system which concerns on this Embodiment is demonstrated.

  FIG. 17 is a diagram showing an example of an outline of the door phone system according to the present embodiment.

  As illustrated in FIG. 17, the door phone system 100 includes a plurality of door phone devices 600 including one or more wireless devices 300, an entrance handset 400, and a door phone parent device 500, as described with reference to FIG. 12. Have.

  The remote monitoring target area in the present embodiment also covers the entire monitoring town as shown in the second embodiment.

  Here, what is characteristic of the door phone system 100 shown in FIG. 17 is that the entrance cordless handset 400 performs wireless communication with the entrance cordless handset 400 arranged outside the other building 200 in addition to each other. This is that the front door device 400 receives reception from the wireless device 300 that moves constantly. As a result, it is possible to watch the momentary movement of the object of remote watching in the present embodiment. Hereinafter, detailed description will be given with reference to FIG. 17 as appropriate.

<Always watching operation>
FIG. 18 is a sequence diagram illustrating an example of the operation of the door phone system 100 that constantly monitors the present embodiment. Here, as described with reference to FIG. 14, the operation in which the object to be watched is located in the watch town is confirmed as a watch operation. In order to confirm the position, a signal for requesting information from the doorphone master unit 500 to the entrance slave unit 400 and the entrance slave unit 400, and from the entrance slave unit 400 to the wireless device 300 is a request signal, and a signal for returning information according to the request signal. Is called a response signal.

  In FIG. 18, the front cordless handset 400 of the door phone device 600 shown in FIG. 17 periodically transmits a request signal (S3601). This request signal is, for example, an RSSI request signal as the request signal described in the first embodiment, and is transmitted toward the radio apparatus 300 at a predetermined time interval T (for example, 2 seconds).

  As shown in FIG. 17, when the child 210 goes out to play, the portable wireless device 300 moves with the child 210, and the wireless device 300 receives a request signal from the front door slave 400 in the vicinity of the movement path (S3602). Then, a response signal to the request signal is transmitted to the entrance slave device 400 that is the transmission source of the request signal (S3603).

  This response signal is an RSSI notification signal as a response signal to the RSSI request signal described in the first embodiment, for example. The response signal may include identification information for identifying the wireless device 300.

  The front door device 400 that has received the response signal transmits a response signal to the doorphone parent device 500 (S3604). At this time, the front door device 400 may determine the identification information included in the response signal and transmit it to the doorphone parent device 500, or may transmit it without determining it.

  Further, in response to the reception of the response signal, the camera unit 440 may take an image of the periphery of the entrance cordless handset 400 with a camera (not shown) and transmit the doorphone base phone 500 together with the response signal.

  The door phone base unit 500 that has received the response signal determines whether or not it is a watching target from the identification information included in the response signal, and performs a watching display process by the watching processing unit 530 for notifying the indoor user 230 of the watching target state. Execute. (S3605). Since the overview of the watch display process has been described in the second embodiment, a description thereof will be omitted.

  When the child 210 further moves, the wireless device 300 receives a request signal from another entrance child device 400 in the vicinity of the moving path (S3606). Then, a response signal to the request signal is transmitted to the entrance slave device 400 that is the transmission source of the request signal (S3607).

  The entrance slave device 400 that has received the response signal determines, for example, whether or not the doorphone device 600 is subject to watching from the identification information included in the response signal, and transmits the other entrance without transmitting the response signal to the doorphone master device 500. A response signal is transmitted to handset 400 (S3608). Here again, a response signal may be transmitted to the intercom base unit 500 without making the above determination. In this case, the doorphone master device 500 makes the above determination, and then the entrance slave device 400 transmits a response signal to the other entrance slave device 400 under the control of the doorphone master device 500.

  The other front door device 400 that has received the response signal transmits a response signal to the doorphone parent device 500 (S3609). At this time, the front door device 400 may determine the identification information included in the response signal and transmit it to the doorphone parent device 500, or may transmit without determining it, as described above.

  The door phone base unit 500 that has received the response signal determines whether or not it is a watching target from the identification information included in the response signal, and performs a watching display process by the watching processing unit 530 for notifying the indoor user 230 of the watching target state. Execute. (S3610).

<Modified example of the operation of constant watching>
FIG. 19 is a sequence diagram illustrating a modified example of the operation of the door phone system 100 that constantly monitors the present embodiment. In the modified example, the watch display processing is not performed at all times by the door phone parent device 500, but the watch display processing is performed when the watch operation is performed.

  Note that FIG. 19 is a modification of the sequence described with reference to FIG. 18, and therefore, overlapping description is omitted or simplified.

  In FIG. 19, as described with reference to FIG. 18, the front cordless handset 400 of the door phone device 600 of each door periodically transmits a request signal (S3701).

  When the wireless device 300 moves with the child 210, the wireless device 300 receives a request signal from the front door slave 400 in the vicinity of the moving path (S3702). Then, a response signal to the request signal is transmitted to the entrance slave device 400 that is the transmission source of the request signal (S3703).

  The front door device 400 that has received the response signal stores the response signal (S3704). At this time, the front door device 400 may transmit a response signal to each doorphone parent device 500 and store the response signal on the doorphone parent device 500 side.

  Further, in response to the reception of the response signal, the camera unit 440 may take an image of the periphery of the entrance child device 400 with a camera (not shown) and store it together with the response signal.

  When the child 210 further moves, the wireless device 300 receives a request signal from another entrance child device 400 in the vicinity of the moving path (S3705). Then, a response signal to the request signal is transmitted to the entrance slave device 400 that is the transmission source of the request signal (S3706).

  The entrance slave device 400 that has received the response signal stores the response signal (S3707). At this time, as described above, the entrance slave unit 400 may transmit a response signal to each doorphone master unit 500 and store the response signal on the doorphone master unit 500 side. The unit 440 may take an image of the periphery of the entrance child device 400 with a camera (not shown) and store it together with the response signal.

  When a watch operation button (not shown) is pressed as a watch operation in door phone master device 500 (S3708), door phone master device 500 transmits a request signal to entrance slave device 400 (S3709).

  The entrance slave device 400 that has received the request signal transmits the request signal to another entrance slave device 400 (S3710), and transmits the response signal stored in step S3704 to the doorphone master device 500 that is the source of the request signal. (S3711).

  In addition, the other entrance slave device 400 that has received the request signal in step S3710 (not shown here, transmits the request signal to another entrance slave device 400, but also the response signal stored in step S3707). The request signal is transmitted to the front door slave 400 (S3712).

  The front door device 400 that has received the response signal transmits the received response signal to the doorphone parent device 500 that is the transmission source of the request signal (S3713).

  The doorphone parent device 500 that has received the response signal in steps S3711 and S3713 determines whether or not it is a watching target from the identification information included in the response signal and notifies the indoor user 230 of the watching target state. The watching display process by the unit 530 is executed. (S3610).

  As described above, in door phone system 100 according to the present embodiment, door phone master device 500 can receive each response signal from a plurality of door phone devices 600 scattered in the watch town, so in the watch display process. For example, the moving route of the wireless device 300 (that is, the child 210 carrying it) can be displayed.

  INDUSTRIAL APPLICABILITY The present invention is useful as a door phone system and a door phone system control method that can perform remote monitoring even when the target area is large.

DESCRIPTION OF SYMBOLS 100 Door phone system 200 Building 300 Wireless apparatus 310 Identification information storage part 320 Apparatus communication part 330 RSSI measurement part 340 Notification generation part 350 Alarm output part 400 Entrance cordless handset 410 Outdoor side communication part 420 Indoor side communication part 430 Information relay part 440 Camera part 500 door phone base unit 510 target information storage unit 520 base unit communication unit 530 watch processing unit 540 instruction request generation unit

Claims (8)

A door phone system comprising a plurality of door phone devices having a door phone parent device disposed indoors and an entrance child device for transferring a signal received from a wireless device moving together with a moving body to the door phone parent device. ,
When the front door unit of the first door phone device among the plurality of door phone devices cannot receive a signal from the wireless device , the front door device of the second door phone device among the plurality of door phone devices A door phone system characterized by transmitting and receiving information on the wireless device. When the first door phone device receives the first information as the information about the wireless device from the first door phone device, the first door phone device receives a signal from the wireless device, 2. The door phone system according to claim 1 , wherein the second information is transmitted as information related to the wireless device to an entrance cordless handset of the door phone device. When the door unit of the second door phone device cannot receive a signal from the wireless device, the gateway device of the third door phone device among the plurality of door phone devices receives third information as the wireless device. Information is transmitted, The door phone system of Claim 2 characterized by the above-mentioned. Upon receiving the fourth information as information on the wireless device from the entrance device of the third door phone device, the entrance device of the second door phone device receives the information from the entrance device of the third door phone device. The door phone system according to claim 3 , wherein fifth information is transmitted as information about the wireless device.   The information on the wireless device includes information on a signal received from the wireless device, information on requesting information on the signal, request source / request destination information on the request, information on responding to the request, and the wireless device The door phone system according to claim 1, further comprising at least one of the registered information. A door phone system comprising a plurality of door phone devices having a door phone parent device disposed indoors and an entrance child device for transferring a signal received from a wireless device moving together with a moving body to the door phone parent device. ,
An entrance cordless handset of the first doorphone device in the plurality of doorphone devices transmits and receives information on the wireless device to and from an entrance cordless handset of the second doorphone device in the plurality of doorphone devices,
The door phone master of the first door phone device is
A display unit for displaying various information;
A display control unit for controlling the position information of the wireless device to be displayed on the display unit;
With
The display control unit includes a plurality of doorphone devices including information related to the wireless device received by an entrance cordless handset of the first doorphone device from an entrance cordless handset of the second doorphone device, and the second doorphone device. de Aho down system that is characterized in that the respective position information, based on the, display position information of the wireless device on the display unit of the. The entrance cordless handset of the second door phone device is
It has a shooting unit that takes pictures of the area around the entrance cordless handset,
3. The door phone system according to claim 2 , wherein when the first information is received, photographing is performed by the photographing unit, and the photographed image is included in the second information and transmitted. A method for controlling a door phone system comprising a plurality of door phone devices, comprising: a door phone parent device disposed indoors; and a front door child device that transfers a signal received from a wireless device that moves with a moving body to the door phone parent device. Because
An entrance cordless handset of the first door phone device among the plurality of door phone devices is
Transmitting the first information as information about the wireless device to the front door unit of the second door phone device among the plurality of door phone devices;
Receiving second information as information related to the wireless device from an entrance cordless handset of a second door phone device among the plurality of door phone devices;
A control method for a door phone system, comprising:

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