JP2009116492A - Reporting system and electronic device to be used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emergency reporting system capable of securely notifying an emergency report within a short time period using a radio whose setting is needless without needing preparation of any device (master device, slave device) in every frequency. <P>SOLUTION: The master device transmits a signal toward the slave device by sequentially switching a plurality of predetermined frequencies. A plurality of master devices are configured as shown by Figures by a plurality of groups (A to D) in which each sequential switching timing of respective plurality of predetermined frequencies (CH1 to CH4) is equal, while each sequential switching order is equal, and the predetermined frequencies which are firstly transmitted among a plurality of predetermined frequencies are made to be different frequencies. The slave device receives the signal toward the slave device by sequentially scanning all frequencies within a transmission time of one frequency of the master device. Thereby the signal from any master device of any group can be received. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an emergency call system.

  There is known a system for simultaneously notifying alarm sounds from a plurality of terminals when making a report. Examples of the notification include a notification notifying the occurrence of a problem and a notification notifying the occurrence of a disaster or the occurrence of prediction information thereof.

For example, Patent Document 1 discloses an earthquake observation apparatus that observes an earthquake by fixed-point observation, an analysis apparatus that analyzes observation information of an earthquake observed by the earthquake observation apparatus, and a predetermined earthquake according to the analysis result of the analysis apparatus. An earthquake warning system having a device for sending an alarm, a network for transmitting an earthquake warning sent from the device, and a plurality of terminals for warning the arrival of an earthquake in response to an earthquake warning received via the network is shown. ing. In this system, for example, before the S wave (secondary wave) that is the main vibration of the earthquake is transmitted, the initial motion of the P wave (primary wave) is detected, the magnitude, epicenter position and depth are estimated, and the earthquake arrives. The warning information is generated and the warning information is transmitted to businesses and individuals before the arrival of the S wave via any network such as the Internet or public line network, thereby minimizing human and property damage. The goal is to keep it to the limit.
JP 2001-307265 A

  When a predetermined report (for example, emergency information) is transmitted to a private house using the technique disclosed in Patent Document 1 described above, the plurality of terminals are installed in each home. A network that can be easily used in a private home includes the Internet and a public network, but in any case, a portion connected to the network is a telephone modular jack or the like. Therefore, the terminal is installed in a position (for example, a living room) where the modular jack of the telephone is already wired. As a result, a person in another room may miss an emergency call notified from a terminal installed in the living room.

  In order to solve this problem, for example, a terminal that notifies an emergency call includes a parent device connected to the network by a wire and a child device that performs notification when an emergency call is received wirelessly from the parent device. It can be set as a terminal system. In this way, the location of the slave unit need only be set in a range where radio waves with the master unit can reach, and wiring is not required, so the degree of freedom of installation is increased. In other words, when the user carries the child device and places it in the destination room or with it at hand, the user can surely recognize the emergency call notified from the child device at any position in the house. it can. In addition, by preparing a plurality of slave units and setting them appropriately in a private home, it is possible to recognize an emergency call notified from any of the slave units at any position in the home.

  However, when the wireless communication is performed between the parent device and the child device, when the installation positions of the plurality of parent devices are close to each other, there are radio waves from the adjacent parent devices. When the frequencies of the adjacent parent devices are the same, interference with the same frequency occurs, and each child device may not be able to receive data from the parent device. Therefore, for example, when the master unit is installed in each home of an apartment house such as a condominium, the installation positions of a plurality of master units are close to each other, which may cause the above problem.

  In order to ensure that the data sent from the master unit is transmitted to the slave unit, there is a method to check if communication is possible by performing two-way communication between the master unit and the slave unit. There is a problem that carrier sense works and cannot be notified in a short time. In addition, the two-way communication has a problem of increasing the cost. On the other hand, in the unidirectional wireless communication system without carrier sense, it is necessary to make a device for each frequency, and there is a problem that it is necessary to set a frequency and set a frequency with a room adjacent to the device at the time of installation.

  A terminal that issues an emergency call is required to operate reliably in an emergency and issue a call. In addition, the time required to issue an emergency call is required to be short. Furthermore, it can be realized at a low cost, and it is desirable that setting at the time of installation of the device is not necessary.

  Therefore, the present invention does not require the creation of frequency-specific devices (parent device / slave device), does not require setting, can transmit an emergency call reliably in a short time using radio, and is low in cost. It is an object of the present invention to provide a notification system that does not require setting and an electronic device used therefor.

  In order to achieve the above-described object, an emergency call system according to the present invention includes (1) a master unit that wirelessly transmits a signal for a slave unit to a slave unit when receiving a predetermined signal from the outside; In a notification system including a slave unit that performs a predetermined notification when receiving a signal for a slave unit, the master unit transmits the slave unit signal by switching a plurality of predetermined frequencies in a predetermined pattern. The slave unit scans the plurality of predetermined frequencies and receives the signal for the slave unit, and the master unit has a start position within the predetermined pattern. It is configured to determine which of a plurality of different groups belongs, and to start transmission with the predetermined pattern from the determined start position.

  The determination of which group the self belongs to, for example, may be made based on a state manually set by a switch or the like, or may be specific to the parent as described later. You may make it discriminate | determine from the content determined based on the identification code | symbol.

  (2) Based on the invention of (1), the predetermined signal from the outside is an emergency notification signal from the outside, and the predetermined notification is an emergency notification notification, and the plurality of predetermined frequencies Is configured so that a plurality of predetermined frequencies are sequentially switched and transmitted, and a plurality of groups having different start positions in the predetermined pattern are transmitted with the plurality of predetermined frequencies. Of these, the predetermined frequency to be transmitted first may be a plurality of groups with different frequencies.

  (3) As another solution, when a predetermined signal from the outside is received, a plurality of master units that wirelessly transmit a slave unit signal to the slave unit, and when the slave unit signal is received, A reporting system comprising a plurality of slave units that perform predetermined notification, wherein the master unit is configured to transmit a signal for the slave unit by switching a plurality of predetermined frequencies in a predetermined pattern; Is configured to scan the plurality of predetermined frequencies and receive the signal for the slave unit, and the plurality of master units have the same predetermined pattern, and a start position within the predetermined pattern. Is composed of a plurality of different groups.

  (4) Based on the invention of (3), the predetermined signal from the outside is an emergency notification signal from the outside, and the predetermined notification is an emergency notification notification, and the plurality of predetermined frequencies Is configured to sequentially switch and transmit a plurality of predetermined frequencies, and the plurality of master units have the same sequential switching timing and the same sequential switching order, The plurality of groups having different start positions in the predetermined pattern may be a plurality of groups having the predetermined frequency to be transmitted first out of the plurality of predetermined frequencies as different frequencies.

  The parent device transmits a signal for the child device while sequentially switching a plurality of frequencies (channels). If four frequencies (CH1, CH2, CH3, CH4) are used, “the order of sequential switching is the same” means that, for example, a certain master unit “CH1 → CH2 → CH3 → CH4 → CH1 → CH2”. → CH3 → CH4 → ...... "while sequentially switching. Of course, the number of frequencies to be used may be less or more than four. Since the base units having different groups have different predetermined frequencies to be transmitted first, when the base unit starting from CH1 is set as one group, the group starting from CH2 is “CH2 → CH3 → CH4 → The transmission is performed while sequentially switching in the order of CH1, CH2, CH3, CH4, CH1, and so on. Further, the number of groups is the maximum number of frequency types to be used (in the above example, “4”). Of course, the number of groups may be set to a number smaller than the number of types of frequencies to be used.

  In addition, the timing of sequential switching of a plurality of predetermined frequencies in a plurality of master units is equal to the switching pattern (the time of transmission using one frequency or the pause time if there is a pause time) Etc.) to be the same. Therefore, when the base units belonging to different groups start transmission at the first frequency at the same time, the frequency switching timings coincide with each other, so that the plurality of base units transmit using different frequencies at the same time. Transmission using the same frequency can be suppressed. Of course, when the transmission start time of each parent device is shifted, the switching timing of the frequency to be transmitted is also shifted by that amount.

  Further, since the master unit of the present invention only needs to “switch and transmit a plurality of predetermined frequencies in a predetermined pattern”, the switching order does not necessarily have to be equal as described above, and the pattern is arbitrary. It is.

  If the number of frequencies (CH) to be used is increased, the number of groups can also be increased, so that the possibility of occurrence of overlapping such that adjacent / adjacent master units simultaneously transmit using the same frequency is reduced. However, since the notification time to the slave unit increases due to the scanning speed, several types (several CH) are preferable. However, the number of frequencies (number of CHs) can be increased by increasing the scanning speed.

  On the other hand, the slave unit scans (sequentially scans) a plurality of predetermined frequencies used by the master unit for transmission, and receives signals for the slave unit. Therefore, the slave unit receives any group of the parent unit pair. be able to. By using this means, a low-cost unidirectional system can be constructed. Also, it is not necessary to create a set with different frequencies (no management). The installer can install without setting the frequency. And it is possible to transmit the earthquake early warning to the child machine surely and quickly.

  Note that “received an emergency call signal from the outside” means, for example, a case where a signal indicating that an emergency call needs to be issued via a network / line is received. It is desirable for the plurality of master units to be configured to receive an emergency call signal from the outside at the same time. If received simultaneously, there is a high possibility that the transmission start timings coincide with each other, and the switching timings of the frequencies used for transmission almost coincide with each other, so that the possibility of overlapping of the frequencies used is suppressed as much as possible.

  In the embodiment, the emergency call signal from the outside is an earthquake warning signal, but the present invention is not limited to this. For example, it is a warning notification regarding heavy rain, flood, tsunami, and other weather, landslide and other There are notifications for giving evacuation advisories, evacuation warnings, etc., and signals for conveying information that is sent to all people in the surrounding area. Furthermore, the present invention can be applied to a system for reporting information that does not necessarily have urgency. This non-urgent information report includes, for example, notifications from government offices and other events, and other announcements / advertising information for events held in the surrounding area.

  In addition, as shown in (2) and (4), when the information to be notified / reported is emergency information, it is necessary to reliably report to many people at the same time. Therefore, the present invention can be applied particularly preferably because it is possible to prevent the occurrence of a situation where notification is not smoothly performed due to a collision of the frequencies used.

  (5) The master unit is installed in each dwelling unit of the apartment house, and the master units installed in neighboring dwelling units are preferably in different groups. In this way, signals directed to the slave units transmitted from the adjacent master unit are transmitted at different frequencies, and the probability that the signals can be reliably communicated increases. In this case, it is preferable that an emergency call signal is sent to each parent device simultaneously (preferably simultaneously). As an example, a distribution system (such as the “router” in the embodiment / variation example) once installed in a shared facility of an apartment house receives an emergency signal, and sends an emergency notification signal to the master unit installed in each dwelling unit. Is to send.

  (6) The slave unit scans all of the plurality of predetermined frequencies, and the master unit outputs a signal for the slave unit using one of the plurality of predetermined frequencies. It is better to set it shorter than the transmission time. In this way, the slave unit can receive during one transmission of the master unit.

  (7) The base unit may be configured to switch to another frequency for transmission after a pause period in which transmission is not performed for a predetermined time after transmitting a signal for the slave unit using one frequency. . The master unit may transmit the signal for the slave unit by switching to another frequency immediately after transmitting the signal for the slave unit at a certain frequency without providing a time for not performing the transmission. In this way, emergency calls can be made quickly. On the other hand, as in the invention of (4), the master unit transmits a signal for the slave unit at a certain frequency, and after not transmitting for a predetermined time, switches to another frequency and transmits the signal. In such a case, even if there is a deviation in the timing of receiving an emergency call signal from the outside among a plurality of master units, if the deviation is within a predetermined time during which transmission is not performed, frequency collision is avoided. be able to. In particular, it is more preferable that the time during which transmission is not performed is set longer than the transmission time of one frequency.

  (8) The base unit may determine the predetermined frequency to be transmitted first among the plurality of predetermined frequencies based on an identification code unique to the base unit. In this way, there is no need to create a master unit for each group. Therefore, for example, it is not necessary to divide the production line for each group, manage the manufacturing group so that it is not biased to a specific group, or manage shipping, thereby reducing manufacturing and management costs. . In addition, when the installer installs the parent device or the child device, each device can be installed without setting the frequency. Therefore, the installation cost can be reduced. In addition, as the identification code unique to the parent device, an originally set code such as a production number may be used, or may be provided for this grouping.

  (9) The wireless transmission performed between the parent device and the child device may be performed by a frequency modulation method. If the frequency modulation method (FM wave) is used, even if the transmission channels of multiple master units overlap, each slave unit will send a signal for the slave unit using radio waves with the strongest electric field strength for each slave unit. Therefore, it is possible to make an emergency call more reliably than in the case of using other modulation schemes.

  (10) The wireless transmission performed between the master unit and the slave unit may be performed by a specific low power radio. The antenna power for radio transmission can be an arbitrary value. For example, it may be power used in a broadcast network or a mobile phone network, or power corresponding to weak radio waves that do not require a license. However, radio transmission is particularly preferably performed by specific low power radio. In this way, it is easy to make simultaneous reports to places where houses are gathered, such as condominiums and housing complexes, and it is also easy to make reports only to specific areas, with a simple circuit configuration. Various effects such as a long communication distance can be obtained. Moreover, although the frequency to be used can be set to an arbitrary value, it is particularly preferable to use the 400 MHz band. In this way, the influence of the installation environment can be reduced.

  (11), (12) The electronic device of the present invention is an electronic device having the configuration of the slave in the notification system according to any one of (1) to (10) above, or (1 ) To (10), the electronic device having the configuration of the parent device in the notification system according to any one of (10) to (10).

  In the present invention, it is not necessary to make a frequency-specific device (base unit / slave unit), setting is not required, an emergency call can be reliably transmitted in a short time using radio, and the setting of the device is low cost. It becomes unnecessary.

  The example applied to the earthquake warning system as embodiment of the emergency call system by this invention is demonstrated. The distribution system for transmitting the emergency call signal received from the outside by the earthquake warning system of the present embodiment is as follows.

  As shown in FIG. 1, first, on the upper side, a plurality of observation devices 1 that observe earthquakes by fixed-point observation, and the observation information of the earthquakes observed by the observation device 1 are analyzed, and according to the analysis results, It has a meteorological observation organization side distribution system 2 that sends out one earthquake warning signal.

  The observation device 1 detects various characteristics such as the period and amplitude of a P wave transmitted by the occurrence of an earthquake. The meteorological observation organization side distribution system 2 analyzes the observation information from the observation device 1, and the first earthquake warning information including information on the location of the earthquake (north latitude / east longitude), the depth of the epicenter, the magnitude, and the maximum seismic intensity. Is generated. These are installed by meteorological observation organizations such as the Japan Meteorological Agency.

  In addition, the earthquake information providing company on the lower side is provided with an information providing organization side distribution system 3. The information providing organization side distribution system 3 is connected to the higher-level meteorological observation organization side distribution system 2 through a dedicated line, a public line or other communication line. When the information providing organization side distribution system 3 receives the first earthquake warning signal distributed from the meteorological observation group side distribution system 2, the information providing organization side distribution system 3 analyzes the received first earthquake warning signal and The intercom control device 4 is determined, and a second earthquake warning signal is transmitted to the intercom control device 4. In other words, an earthquake information provider company receives an application (both online / offline) from a user who applies this service in advance, and the distribution system 3 on the information providing organization side has or can access according to the application The information on the location (northern latitude / east longitude) of each apartment where the interphone control device 4 is installed and the IP address of the interphone control device 4 are stored in a simple database. When the information providing organization side distribution system 3 receives the first earthquake warning information from the meteorological observation organization side distribution system 2, the information providing organization side distribution system 3 accesses the database and includes the location information of the epicenter included in the first earthquake warning information. Compared with the location information of each condominium, the IP address of the interphone control device 4 installed in the condominium in the area where the earthquake reaches is extracted, and the second earthquake is applied to the interphone control device of these IP addresses. Send an alarm signal. The second earthquake warning signal is transmitted using the Internet 5 which is one of the existing networks and the router 6 of the condominium shared facility in which the interphone control device 4 is arranged.

  The intercom control device 4 deployed as a shared facility in the apartment is an intercom device installed in each house in the apartment that receives the second earthquake warning signal received from the information providing organization side distribution system 2 via the Internet 5 and the router 6. It has a function to send to 10 at the same time. The intercom device 10 and the intercom control device 4 are connected by home wiring.

  An interphone device 10 connected to the interphone control device 4, a controller 20 connected to the interphone device 10, and one or more slave units 30 are installed in each apartment door.

  The intercom control device 4 is installed at the entrance of the apartment, and has a general interphone function installed at the entrance of the apartment. In other words, it has a microphone, a camera, an operation unit, a communication unit, and a control unit that controls them. A call signal, a camera image signal, and a microphone sound signal are transmitted to the interphone device. When a response signal is transmitted from the interphone device, the microphone audio signal received by the microphone of the interphone device is converted into an audio signal by the speaker and output. Furthermore, the intercom control device 4 used in the present embodiment has a function of simultaneously transmitting the second earthquake warning signal to the intercom device 10 installed in each house in the apartment, in addition to such a general intercom function.

  Next, the configuration of the intercom device 10, the controller 20, and the slave unit 30 installed in each house of the apartment will be described in more detail with reference to FIG. The intercom device 10 and the controller 20 constitute a parent device. Hereinafter, the intercom device 10 and the controller 20 are collectively referred to as a parent device.

  The intercom apparatus 10 includes a control unit 11, a display 12, a speaker 13, and an operation switch 14 connected to the control unit 11. The intercom device 10 has an earthquake alarm notification function in addition to the general intercom function as described above. This earthquake warning notification function operates the speaker 13 to notify the earthquake warning by voice when the second earthquake warning signal is received from the intercom control device 4 and transmits the earthquake warning signal to the controller 20. Do.

  Specifically, when receiving the second earthquake warning signal from the interphone control device 4, the control unit 11 of the interphone device 10 transmits the second earthquake warning signal to the controller 20, and “An earthquake is coming”, and a control is performed to output an alarm from the speaker 13 by synthesizing an alarm sound and voice. The control unit 21 also outputs a visual alarm by causing the LED 24 to emit / flash. These controls are performed for 20 seconds after receiving the second earthquake warning signal. The intercom device 10 can perform the alarm operation based on the received second earthquake alarm signal by a configuration similar to that which performs the alarm operation disclosed in Patent Document 11.

  The controller 20 is a box-type device that can be installed on a desktop or the like. The controller 20 includes a control unit 21, a wireless transmitter 22 connected to the control unit 21, and an LED 24. When the control unit 21 of the controller 20 receives the second earthquake warning signal from the intercom device 10, it controls the wireless transmitter 22 to wirelessly transmit the second earthquake warning signal to the slave unit 30. Control to blink the LED 24 is performed.

  When wirelessly transmitting to the slave unit 30, the wireless transmitter 22 uses four different channels (frequencies) in the 400 MHz band while sequentially switching. These channels are labeled CH1, CH2, CH3, CH4. The modulation method is frequency modulation, and the transmission power is 10 mW. Further, the wireless transmitter 22 is manufactured by being divided into four groups (A to D) at the time of manufacturing. The group to which the wireless transmitter 22 belongs is determined by the remainder of dividing the last two digits of the wireless ID, which is a unique identification code originally possessed by the wireless transmitter 22, by 4 (0 ˜3), it is determined which of the groups (A to D). In each group, four channels (hereinafter, channels (frequency) are expressed as CH) are sequentially switched and transmitted.

  Specifically, as shown in FIG. 3, the group A radio transmitters are configured in the order of CH1 → (2-second pause) → CH2 → (2-second pause) → CH3 → (2-second pause) → CH4 in this order. The wireless transmitters of group C are in the order of CH2 → (2-second pause) → CH3 → (2-second pause) → CH4 → (2-second pause) → CH1. Group C radio transmitters are CH3 → (2-second pause) → CH4. In order of → (2-second pause) → CH1 → (2-second pause) → CH2, the group D radio transmitters are CH4 → (2-second pause) → CH1 → (2-second pause) → CH2 → (2-second pause). → Transmit in the order of CH3. The transmission time of all the CH1 to CH4 is the same transmission time (933 ms).

  The switching timing of the CH used for transmission can be started based on, for example, the time when the second earthquake warning signal is received. If it does so, the radio transmitters 22 of the plurality of controllers 20 arranged in the same apartment will send the second earthquake warning signal transmitted from the control unit 11 of the interphone device 10 by simultaneous broadcast to the control unit 21. Therefore, the reception timing can be estimated to be almost the same. Then, the wireless transmitters 22 of the plurality of controllers 20 installed in the same apartment will transmit at the timing of the corresponding group shown in FIG. 3, and each wireless transmitter 22 has a predetermined CH at the same timing. Will be paused at the same timing. Therefore, when the wireless transmitters belonging to each group start transmission all at once, the wireless transmitters belonging to other groups do not transmit using the same channel at the same time.

  In addition, since each wireless transmitter does not communicate with other wireless transmitters for synchronization, the controller 20 controls the second earthquake alarm signal broadcast simultaneously from the control unit 11 of the intercom device 10. The timing at which the control unit 21 receives the second earthquake alarm signal transmission start command from the control unit 21 due to a difference in time due to a shift in timing received by the unit 21 or internal processing in the control unit 21. If the timing at which the wireless transmitter 22 receives the second earthquake warning signal is shifted due to a shift, the transmission timing (CH switching, pause timing) that starts thereafter is also shifted. In the present embodiment, as shown in FIG. 3, after transmitting at a certain frequency (CH), it is paused for 2 seconds until it is transmitted at the next frequency (CH). Even if there is a discrepancy in the timing of receiving an emergency call signal (second earthquake warning signal) from the outside of the master unit, if there is a discrepancy within the specified time during which no transmission is performed, a frequency collision will occur. Can be avoided.

  Therefore, by installing a controller 20 having wireless transmitters 22 belonging to different groups in neighboring homes, the occurrence of the same frequency interference is suppressed, and each slave unit 30 receives data from the master unit. can do. In the present embodiment, since frequency modulation is used, even if the transmission channels of a plurality of parent devices overlap, each child device can receive a child device by radio waves having the strongest electric field strength for each child device. Therefore, it is possible to make an emergency call more reliably than in the case of using other modulation schemes.

  In the present embodiment, the base unit is configured to sequentially switch and transmit a plurality of predetermined frequencies (CH1 to CH4) and to make the switching timings equal, but the present invention is not limited to this. Rather, various switching patterns can be used for each group, and the switching timing can be changed and set as appropriate. However, the switching patterns of the parent devices belonging to the same group are set to be the same.

  The subunit | mobile_unit 30 has the radio | wireless receiver 32, LED34, the speaker 35, and the control part 31 connected to these, as shown in FIG. The radio receiver 32 of the slave unit 30 always scans the frequencies of CH1 to CH4. The scanning speed is such that all 4 CHs can be scanned during transmission of one CH on the transmitting side (10 continuous transmissions = 933 ms). In this way, the wireless receiver 32 of the slave unit 30 transmits the wireless transmitter 22 of the controller 20 regardless of whether the wireless transmitter 22 of the paired controller 20 is any of groups A to D. By scanning all four CHs during transmission of the second earthquake warning signal (933 ms), the second earthquake warning signal can be received when any one of the CHs is scanned. That is, since the subunit | mobile_unit 30 can respond | correspond to the radio transmitter which belongs to any group, it is not necessary to divide into groups and what is necessary is just to manufacture one type.

  The control unit 31 of the slave unit 30 receives the second earthquake warning signal transmitted from the master unit (the controller 20) by the wireless receiver 32, and “sounds an ephemeral earthquake” and an alarm sound and voice synthesis. The alarm is output from the loudspeaker 13 and the visual warning is also output by causing the LED 24 to emit / flash. Various types of alarms can be used. Further, the alarm mode in the slave unit 30 may be the same as or different from the alarm in the controller 20.

  FIG. 4 shows an installation example of the parent device and the child device. As shown in the figure, in each adjacent home, a different group of parent devices 40a, 40b, and 40c (in particular, when each individual parent device does not need to be distinguished, it is referred to as a parent device 40). The base unit 40 is installed in the vicinity of the existing intercom device. For example, each home is a similar place such as a living room. As described above, since an earthquake alarm is also issued from the parent device 40, a person in a living room or the like where the parent device 40 is installed will generate an earthquake after a predetermined time due to the alarm from the parent device 40. Can know.

  Moreover, as shown in FIG. 4, since the subunit | mobile_unit 30a-30e (it is called the subunit | mobile_unit 30 especially when it is not necessary to distinguish each subunit | mobile_unit), since it can carry, the resident of each household exists. It is arranged in a room, or one or more are arranged in a predetermined place regardless of the resident location. In this case, the slave unit 30 receives the second earthquake warning signal wirelessly transmitted from the master unit that has received the second earthquake warning signal to the slave unit, and issues a predetermined alarm based on the second earthquake warning signal. Even when not in the vicinity of the master unit, the resident can recognize the emergency based on the alarm from the slave unit.

  As described above, the slave unit 30 can receive the second seismic warning signal from any group of master units, so signals from neighboring master units such as a master unit installed in another house of an apartment May be received, and the earthquake warning can be transmitted to the residents earlier. That is, for example, in the case shown in FIG. 4, the slave unit 30b installed in the central home (dwelling unit) is closer to the master unit 40a installed in the neighbor than the corresponding master unit 400b. In addition, the slave unit 30d installed in the home (dwelling unit) on the right side is closer to the master unit 40b installed in the neighboring house than the corresponding master unit 40c. In this case, for example, both the second earthquake warning signal transmitted from the parent device 40a and the second earthquake signal transmitted from the parent device 40b reach the installation position of the child device 30b. The slave unit 30d is also within the communication range of the master unit 40b and the master unit 40c. And each main | base station 40a-40c transmits a 2nd earthquake warning signal using different CH at the substantially same timing, On the subunit | mobile_unit side, while a main | base station transmits the 2nd earthquake warning signal once. Since all 4 CHs are scanned, the slave unit receives a signal from the master unit that has transmitted the second earthquake warning signal using the earlier CH in the order of all 4 CH scans, or from the nearest master unit. Alarm processing can be performed based on the signal. As described above, the earthquake early warning can be surely transmitted to the slave unit quickly.

  Further, according to the present system, it is possible to realize a unidirectional communication system that does not cost much. Furthermore, since the slave unit corresponds to all the master units, it is not necessary to make a set with different frequencies. In addition, since the installation contractor can perform the installation without setting the frequency of the parent device or the child device, the operation can be started easily.

  In addition, embodiment of this invention is not limited to what was mentioned above, Various aspects can be taken. For example, in the above embodiment, the second earthquake warning signal is distributed to the master unit via the intercom control device in the apartment. For example, as shown in FIG. It is good also as a structure delivered to a main | base station via the router 6 installed in each house.

  The base unit 40 in this case is preferably a desktop controller connected to the router 6 as shown in FIG. The desktop controller (base unit 40) includes a control unit 41, a wireless transmitter 42, an LED 44, and a speaker 43. The base unit 40 adds the function related to the control of the speaker 13 and the interphone device 10 included in the interphone device 10 to the function of the controller 20 shown in FIG. Instead, the connection function to the router 6 is provided in the control unit 41. Specifically, when receiving the second earthquake warning signal via the router 6, the control unit 41 performs control to output an alarm from the speaker 13 by synthesizing an alarm sound and voice, “Phi Phi Earthquake will come”. The control unit 41 also outputs a visual alarm by causing the LED 44 to emit / blink. These controls are performed for 20 seconds after receiving the second earthquake warning signal. In addition, the control unit 41 gives a transmission command for the second earthquake warning signal to the wireless transmitter 42. Upon receiving this transmission command, the wireless transmitter 42 has the same configuration as the wireless transmitter 22 described above, and wirelessly transmits the second earthquake warning signal while switching the CH at a predetermined timing.

  5 illustrates the configuration in which the router 6 is provided in each door. For example, each door does not have a router, but instead has a router in a condominium management room, and the router and a desktop controller provided in each door. It is good also as a structure connected with a cable.

It is a figure which shows an example of the system to which this invention is applied. It is a block diagram which shows this embodiment. It is a figure which shows an example of the switching timing of the transmission frequency (CH) according to group. It is a figure which shows the example of installation to each dwelling unit of an apartment house. It is a block diagram which shows another embodiment. It is a block diagram which shows another embodiment.

Explanation of symbols

10 Interphone device 20 Controller 30, 30a-30e Slave unit 40, 40a-40c Master unit

Claims (12)

A master unit that wirelessly transmits a signal for the slave unit to the slave unit when receiving a predetermined signal from the outside;
When receiving the signal for the slave unit, a slave unit that performs a predetermined notification;
In a reporting system comprising
The master unit is configured to transmit the slave unit signal by switching a plurality of predetermined frequencies in a predetermined pattern,
The slave unit is configured to receive the signal for the slave unit by scanning the plurality of predetermined frequencies,
The base unit determines to which of a plurality of groups different start positions in the predetermined pattern belong and starts transmission in the predetermined pattern from the determined start position. A featured reporting system. The predetermined signal from the outside is an emergency call signal from the outside,
The predetermined notification is an emergency notification notification,
The configuration in which the plurality of predetermined frequencies are switched and transmitted in a predetermined pattern is a configuration in which the plurality of predetermined frequencies are sequentially switched and transmitted.
2. The plurality of groups having different start positions in the predetermined pattern are a plurality of groups having the predetermined frequency to be transmitted first out of the plurality of predetermined frequencies as different frequencies. The reporting system described in. A plurality of master units that wirelessly transmit signals for the slave unit to the slave units when receiving a predetermined signal from the outside;
When receiving the signal for the slave unit, a plurality of slave units that perform a predetermined notification,
In a reporting system comprising
The master unit is configured to transmit the slave unit signal by switching a plurality of predetermined frequencies in a predetermined pattern,
The slave unit is configured to receive the signal for the slave unit by scanning the plurality of predetermined frequencies,
The reporting system, wherein the plurality of master units are configured by a plurality of groups having the same predetermined pattern and having different start positions within the predetermined pattern. The predetermined signal from the outside is an emergency call signal from the outside,
The predetermined notification is an emergency notification notification,
The configuration in which the plurality of predetermined frequencies are switched and transmitted in a predetermined pattern is a configuration in which the plurality of predetermined frequencies are sequentially switched and transmitted.
The plurality of master units have the same sequential switching timing, the sequential switching order is equal,
4. The plurality of groups having different start positions in the predetermined pattern are a plurality of groups having the predetermined frequency to be transmitted first among the plurality of predetermined frequencies as different frequencies. The reporting system described in.   5. The device according to claim 1, wherein the parent device is installed in each dwelling unit of the apartment house, and the parent device installed in a neighboring dwelling unit is of a different group. The reporting system described.   The slave unit transmits a signal for the slave unit using a certain one of the plurality of predetermined frequencies when one slave cycle scans all of the plurality of predetermined frequencies. The notification system according to any one of claims 1 to 5, wherein the notification system is set to be shorter than a predetermined time.   The base unit is configured such that after transmitting a signal for a slave unit using one frequency and after a pause period during which transmission is not performed for a predetermined time, the base unit is switched to another frequency for transmission. The notification system according to any one of claims 1 to 6.   8. The base unit according to claim 1, wherein the base unit determines the predetermined frequency to be transmitted first out of the plurality of predetermined frequencies based on an identification code unique to the base unit. The reporting system described in.   The notification system according to any one of claims 1 to 8, wherein the wireless transmission performed between the parent device and the child device is performed by a frequency modulation method.   The notification system according to any one of claims 1 to 9, wherein the wireless transmission performed between the parent device and the child device is performed by a specific low power wireless.   The electronic device which has a structure of the subunit | mobile_unit in the alerting | reporting system of any one of Claims 1-10.   The electronic device which has the structure of the main | base station in the alerting | reporting system of any one of Claims 1-10.

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