JP2014027377A - Meeting notification system - Google Patents

Abstract

Even if a mobile phone or the like cannot be used due to a disaster such as an earthquake disaster, if a person who is looking for is nearby in an evacuation site or the like, it is notified so that a meeting can be made surely.
SOLUTION: Users A and B carry mobile terminals 10-1 and 10-2 respectively, and the mobile terminals 10-1 and 10-2 register each other in advance as communication partners and search for the other party visually. Communication is possible within a range not exceeding a predetermined communication distance. When the user A searches for the user B, a call signal is transmitted to the portable terminal 10-2 by a calling operation of the portable terminal 10-1. The mobile terminal 10-2 that has received the call signal from the mobile terminal 10-1 notifies the caller that the user A is searching, and automatically transmits a call response signal to the mobile terminal 10-1. The caller mobile terminal 10-1 that has received the call response signal from the mobile terminal 10-2 notifies the user of the call response and notifies the user A that the user B is nearby.
[Selection] Figure 1

Description

The present invention relates to a meeting notification system that enables a meeting to be performed by knowing that specific users are close to each other when a disaster such as an earthquake occurs.

  For example, when a large-scale disaster such as an earthquake exceeding seismic intensity 6 occurs, it is assumed that the communication base stations and communication facilities of the social communication infrastructure such as mobile phones and the Internet used daily are damaged. In addition, there is a concern that the amount of communication will increase drastically as users try to contact their families and that the communication function will be disrupted as experienced by the Great East Japan Earthquake.

  In order to solve such problems, disaster countermeasures such as improving the earthquake resistance of communication facilities and introducing uninterruptible power supply devices are taken, and further, the communication line capacity is increased to match the expected increase in communication volume in the event of a disaster. It has been broken.

  In the event of a disaster, securing communication means is important to confirm the safety of family members and relatives. However, if a disaster occurs and the communication infrastructure is severely damaged, mobile phones, etc. It is almost impossible to communicate with the other means of communication.

For this reason, family members and close relatives who live together should decide a temporary meeting place, evacuation site, or evacuation site in the event of the earthquake, and the earthquake will occur and local governments, police Alternatively, if an evacuation instruction is issued by a fire department or the like and it becomes impossible to go to the home, they will gather at a predetermined place.

JP 2004-139336 A

  However, even if the earthquake actually occurred and we were able to reach the place where we decided safely, many people were evacuating from the neighborhood, and the confusion caused by the earthquake In order to find a family member and relatives in such a place, even if you are near, you may not realize it, you can not easily meet, and for a long time you worry about safety and spend an uneasy time It can be.

  In addition, if one of the family members is missing after the earthquake and you know where you were on that day, you may want to go to that location and search for it. Therefore, it is in a difficult situation where you cannot search even if you are in that place.

The present invention provides a meeting notification system that enables a user to easily meet and know each other that they are within a visually searchable range when a disaster such as an earthquake occurs. The purpose is to do.

(Meeting notification system)
The present invention provides a meeting notification system,
Comprising at least two portable terminal means each carried by a different user,
Each of the portable terminal means is capable of communicating within a range not exceeding a predetermined communication distance in which each other is registered in advance as a communication partner and the partner user can be searched visually.
When one mobile terminal means transmits a call signal to another mobile terminal means and receives a call response signal from another mobile terminal means in response to transmission of the call signal, the mobile terminal means notifies the call response,
The other portable terminal means is characterized in that when a call signal transmitted by one portable terminal means is received, a call is notified and a call response signal is transmitted.

(Notification of call failure due to time over)
One mobile terminal means notifies a call failure when a call response signal is not received even after a predetermined time has elapsed since the call signal was transmitted to another mobile terminal means.

(Notification of call failure due to retry over)
One mobile terminal means transmits a call signal again when a call response signal is not received even after a predetermined time has elapsed since the call signal is transmitted to the other mobile terminal means, and a predetermined number of call signal transmissions ( If no paging response signal is received even if (retry) is repeated, no response is notified.

(Manual call)
The portable terminal means transmits a call signal when detecting acceptance of a call operation by its own operation means.

(Transmission power control)
The portable terminal means performs power control that increases the transmission power when the communication distance becomes longer and decreases the transmission power when the communication distance becomes shorter in the range of the predetermined maximum transmission power to the predetermined minimum transmission power. Do.

(Transmission power reduction control)
The portable terminal means includes reception intensity detection means for detecting the reception intensity of the received call signal,
When the reception strength of the calling signal detected by the reception strength detection means is equal to or higher than a predetermined value or higher than the upper limit of the predetermined range, the other portable terminal means decreases the current transmission power by a predetermined value and also detects the detected reception strength. Send a paging response signal
When one mobile terminal means receives a call response signal from another mobile terminal means and the reception intensity included in the call response signal is not less than a predetermined value or not less than an upper limit of a predetermined range, the current transmission power Is decreased by a predetermined value, and the next call signal is transmitted.

(Transmission power increase control)
The portable terminal means increases the transmission power by a predetermined value when the reception intensity is less than the predetermined value or less than the lower limit of the predetermined range in a state where the current transmission power is controlled to be lower than the maximum transmission power.

(Select and call the other party)
When a plurality of communication partners are registered, the portable terminal means transmits a call signal to the portable terminal means of the communication partner selected by the operation means.

(Basic effect)
The meeting notification system of the present invention includes at least two portable terminal means carried by users A and B such as family members. Each of the portable terminal means registers each other in advance as a communication partner, and visually Communication is possible within a range that does not exceed a predetermined communication distance in which a partner user can be searched, and the mobile terminal means of user A transmits a call signal to the mobile terminal means of user B and the call signal When a call response signal is received from the user B's portable terminal means in response to the transmission, the call response is notified, and the user A's portable terminal means receives the call signal transmitted by the user B's portable terminal means. When received, since the call is notified and the call response signal is transmitted, the mobile terminal means of the user B can notify the call and notify that the user A is searching. Mobile The end means can notify that the user B is nearby by notifying the call response, and is searching for places that are crowded or confused by many people who have evacuated due to the earthquake, etc. Knowing that the other party is nearby, you can search for it calmly and steadily, without having to spend too much time and confirming your safety.

  In addition, after the earthquake, there are people in the family who do not know whereabouts, and the place where they went out on that day is almost known. If it is within the range to be found, a call response from the partner is notified, and for example, a range having a radius of about several tens of meters centering on itself can be set as the search range, and an efficient search activity becomes possible.

  Also, even if you are trapped in a collapsed building, etc., make a call nearby and check to see if you are notified of the call response, and perform rescue operations promptly and appropriately. Is possible.

(Effect of call failure notification due to time over)
In addition, the mobile terminal means notifies the call failure when the call response signal is not received even after a predetermined time has elapsed since the call signal is transmitted to the other mobile terminal means. It turns out that it is not within the communicable range that can be searched, and enables appropriate search activities such as changing the place and searching in a different place.

(Notification of call failure due to retry over)
The portable terminal means transmits the call signal again when the call response signal is not received even after a predetermined time has elapsed since the call signal is transmitted to the other portable terminal means, and the call signal is transmitted a predetermined number of times ( If no call response signal is received even after repeating (retry), a no response will be notified. Therefore, even if there is a partner in the communicable range, even if communication is temporarily disabled due to a change in communication status, a predetermined number of times By performing a retry call, it is possible to reliably notify the call and the call response, thereby enabling a meeting.

(Effects of manual call)
Further, since the mobile terminal means transmits a call signal when it detects acceptance of the call operation by its own operation means, it can perform the call operation in a place where the other party is likely to be present, thereby minimizing battery consumption. The search that is held down can be performed.

(Effects of transmission power control)
In addition, the mobile terminal means is a power that increases the transmission power when the communication distance becomes long and decreases the transmission power when the communication distance becomes short in the range of the predetermined maximum transmission power to the predetermined minimum transmission power. Since control is performed, it is possible to perform transmission with appropriate transmission power commensurate with the communication distance, reduce power consumption, and reduce the burden on the mobile terminal means, compared to the case of transmitting with the maximum transmission power.

(Effects of transmission power reduction control)
In addition, the mobile terminal means includes reception intensity detection means for detecting the reception intensity of the received call signal, and the other mobile terminal means has the reception intensity of the call signal detected by the reception intensity detection means equal to or higher than a predetermined value or in a predetermined range. If it is equal to or greater than the upper limit, the current transmission power is reduced by a predetermined value, and a call response signal including the detected reception strength is transmitted. When the reception strength included in the response signal is equal to or higher than the predetermined value or higher than the upper limit of the predetermined range, the current transmission power is reduced by the predetermined value and the next call signal is transmitted. Although the communication distance with the mobile terminal means of the other party changes due to movement, if the communication distance is short and the reception strength is relatively high, the transmission power is correspondingly reduced to reduce the power consumption. Reliable transmission power It can be.

(Effects of increased transmission power control)
In addition, the portable terminal means increases the transmission power by a predetermined value when the reception power is less than a predetermined value or less than the lower limit of the predetermined range in a state where the current transmission power is controlled to be lower than the maximum transmission power. For this reason, if the reception strength becomes relatively small due to an increase in the communication distance, the transmission power can be increased correspondingly and communication can be reliably performed with an appropriate transmission power.

(Effects of a call that selects the other party)
In addition, when a plurality of portable terminal means are registered in advance as communication counterparts, the portable terminal means can be paired between a plurality of mobile terminal means by selecting and calling the destination to be searched by the operation means. 1 communication is possible, and a complicated communication protocol required for 1-to-n communication is not required, and a plurality of destinations can be selectively called and searched.

Explanatory drawing which showed an example of the meeting alerting | reporting system by this invention Explanatory drawing which showed the external appearance of embodiment of a portable terminal Explanatory drawing which showed the external appearance of other embodiment of a portable terminal Explanatory drawing which showed the external appearance of other embodiment of a portable terminal Block diagram showing outline of functional configuration of mobile terminal Flow chart showing control of portable terminal Flow diagram showing control between mobile terminals Explanatory drawing which showed the other Example of the meeting alerting | reporting system by this invention which switches a communication other party. Explanatory drawing which showed the external appearance of other embodiment of the portable terminal used in FIG.

[Configuration of meeting notification system]
(Outline of system configuration)
FIG. 1 is an explanatory diagram showing an outline of a meeting notification system according to the present invention. The meeting notification system according to the present embodiment includes mobile terminals 10-1 and 10-2 that function as mobile terminal means carried by different users A and B, respectively. Hereinafter, the portable terminals 10-1 and 10-2 are referred to as portable terminals 10 when they are not distinguished from each other.

  Here, the mobile terminals 10-1 and 10-2 can communicate with each other in a range not exceeding a predetermined communicable distance in which each other is registered in advance as a communication partner and the partner user can be searched visually. Yes, when the mobile terminals 10-1 and 10-2 are within a communicable distance, for example, when the mobile terminal 10-1 detects acceptance of a call operation by the user A, the mobile terminal 10 owned by the user B -2 is transmitted through the communication path 11a. When the mobile terminal 10-2 owned by the user B receives the call signal transmitted from the mobile terminal 10-1, the mobile terminal 10-2 notifies the call and transmits the call response signal. Subsequently, when the mobile terminal 10-1 receives the call response signal transmitted from the mobile terminal 10-2 through the communication path 11b, the mobile terminal 10-1 notifies the call response.

  In addition, the communicable distance of the mobile terminals 10-1 and 10-2 that allow the users A and B to visually search for the other user and does not exceed a predetermined distance is at most 100 meters or less. Yes, preferably a communicable distance of up to several tens of meters.

[Configuration of mobile terminal 10]
(Appearance of mobile device)
FIG. 2 is an explanatory view showing the external appearance of the mobile terminal 10 according to the present invention, and the side on which the strap attachment portion 26 is provided is the upper side.

  In FIG. 2, the mobile terminal 10 is provided with a call button 14, a call indicator lamp 16, an error indicator lamp 18, a reception intensity display unit 20, an acoustic hole 22, and an antenna 24 on the front side of the main body 12 </ b> A.

  When the call button 14 is pressed, a built-in call switch (not shown) is turned on in conjunction with this to accept the call operation. The call indicator lamp 16 lights up or blinks when a call signal is received or when a call response signal is received from a call partner. The error indicator lamp 18 lights up or blinks to indicate a call failure when a call response signal cannot be received from the call partner.

  The reception intensity display unit 20 displays, for example, three LEDs so as to increase the number of lights as the reception intensity increases, according to the reception intensity of the received call signal or call response signal. The display by the reception intensity display unit 20 can be used as a guide for the distance to the other party. The reception intensity display unit 20 is not necessarily provided.

  The sound hole 22 incorporates a buzzer and a speaker therein so that an operation sound and a call response sound can be output. The strap attachment portion 26 can be suspended from a user's mobile phone or bag by attaching a strap (string).

  FIG. 3 is an explanatory view showing an appearance of another embodiment of the mobile terminal 10 according to the present invention. In the embodiment of FIG. 3, the main body 12B is made thinner than the main body 12A of FIG. Increases portability. Since other configurations are the same as those in FIG. 2, the same reference numerals are given and description thereof is omitted.

  FIG. 4 is an explanatory view showing the appearance of another embodiment of the portable terminal 10 according to the present invention. In the embodiment of FIG. 4, the main body 12B is an ellipse compared to the rectangular main bodies 12A and 12B of FIGS. It has a shape that enhances portability and improves appearance. Since other configurations are the same as those in FIG. 2, the same reference numerals are given and description thereof is omitted.

  The form of the portable terminal 10 of the present invention is not limited to FIGS. 2 to 4, and may be a form to which an appropriate character is applied, for example.

(Outline of functional configuration of mobile terminal)
FIG. 5 is a block diagram showing an outline of the functional configuration of the mobile terminal 10. In FIG. 5, the mobile terminal 10 includes a control unit 30, a communication unit 32 connected to the antenna 24, a notification unit 34, and an operation unit 36, and operates with a battery power source (not shown).

  The control unit 30 is a function realized by executing a program, for example. As the hardware, a CPU, a memory, a computer circuit having various input / output ports, and the like are used.

  The communication unit 30 transmits / receives a call signal or a call response signal to / from another portable terminal according to a predetermined communication protocol.

  As a communication protocol of the communication unit 32, it is sufficient that the communicable distance is about several tens of meters that can visually search for the other party. Therefore, for example, RFID (Radio Frequency IDentification “abbreviation of individual identification by radio wave”) is assigned. For example, a near field communication protocol for sensor networks known as ZigBee® using a frequency of 900 MHz, for example 950 to 957 MHz, is used.

For example, ZigBee (R), for example, 900 MHz band short-range wireless communication, the transmission power is set to 1 mW or less as in the case of the specific low-power wireless station, and the line-of-sight communication distance is about several tens of meters when the transmission power is set to 1 mW. It is suitable for the portable terminal 10.
In ZigBee (R), which is provided as a short-range wireless communication standard for home appliances, a node that functions as one coordinator and a plurality of nodes that function as routers are arranged so that the star is centered on the coordinator. A network topology and a topology can be constructed, and in the case of only a node functioning as a router, a peer-to-peer network topology can be constructed. For this reason, in the present embodiment, the mobile terminal 10 is a node that functions as a router of ZigBee (R), thereby performing peer-to-peer communication (one-to-one communication).

  In addition, as a communication protocol of the communication unit 30, in Japan, for example, STD-30 (a wireless equipment standard for a low power security system radio station) known as a standard for a specific low power radio station in the 400 MHz band. Or you may use the communication protocol based on STD-T67 (standard specification of the radio equipment for specific low power radio station telemeters, telecontrol, and data transmission).

  The transmission power of the mobile terminal 10 compliant with the specific low power radio station is 10 mW or less for STD-30, 10 mW or less or 1 mW or less for STD-T67, and the line-of-sight communication distance is about 100 meters. Become. Therefore, in the present embodiment, the maximum transmission power is, for example, 5 mW in the case of STD-30 and 5 mW or 0.5 mW in the case of STD-T67 so that the line-of-sight communication distance is within a few tens of meters. Restrict.

  The call signal transmitted from the communication unit 32 has a format including a transmission source code, a transmission destination code, an event code, and the like, and the call response signal transmitted from the communication unit 32 includes a transmission source code, a transmission destination code, an event code, Further, in the case of a response, a format including a data portion in which received intensity is arranged is used.

  The communication unit 32 includes an appropriate reception intensity detection circuit that functions as reception intensity detection means for detecting the reception intensity of the received call signal. Based on the reception strength detected by the reception strength detection circuit according to an instruction from the control unit 30, the communication unit 32 sets the transmission power P as necessary within a range between a predetermined maximum transmission power Pmax and a predetermined minimum transmission power Pmin, for example, ZigBee ( In the case of R), variable control is performed in the range of 0.1 mW to 1 mW.

  The notification unit 34 includes a speaker, an LED, and respective drive circuits. The notification unit 34 outputs an operation sound and a call answering sound from the speaker according to an instruction from the control unit 30 as necessary. Various notification displays including the indicator lamp 16, the error indicator lamp 18, and the reception intensity display unit 20 are performed.

  The operation unit 36 includes various switches such as a call switch for accepting a call operation of the call button 14 shown in FIGS. 2 to 4 and a registration switch for registering a communication partner.

  The control unit 30 performs the following registration control, call control, call response control, and transmission power control.

(Registration control)
When the control unit 36 detects the acceptance of the registration operation by the registration switch of the operation unit 36 in a state where the control unit 36 is placed side by side with the portable terminal 10-2 as a communication partner, the control unit 36 instructs the communication unit 32 to request registration. The portable terminal 10-2 that receives the registration request signal transmitted by this control is controlled to transmit the signal to the portable terminal 10-2. The transmission source code of the portable terminal 10-1 included in the registration response signal And the transmission source code of the terminal device 10-1 as a communication partner is stored in the memory.

  Further, when the mobile terminal 10-2 receives the registration request signal and performs a registration operation, the mobile terminal 10-2 transmits a registration response signal to the mobile terminal 10-1, and the control unit 30 transmits the mobile terminal 10 via the communication unit 32. -2 is detected, the transmission source code of the mobile terminal 10-2 included in the registration response signal is acquired and stored in the memory as a communication partner.

  In addition, the registration operation to the mobile terminal 10-1 is performed by a dedicated writing device that can create and transmit the same transmission source code as that of the intended communication partner without the communication partner mobile terminal 10-2. You can go.

(Call control)
When the control unit 30 detects acceptance of a call operation by a call switch provided in the operation unit 36, the control unit 30 generates a call signal, instructs the communication unit 32, and performs control for transmitting the call signal. In this case, the control unit 30 instructs the notification unit 34 to output an operation sound such as “beep”.

  Moreover, the control part 30 performs control which alert | reports a call response, when detecting the effective reception of the call response signal which the portable terminal 10-2 transmitted via the communication part 32 after transmitting the call signal. As notification of the call response in this case, the control unit 30 instructs the notification unit 34 to output, for example, a paging response sound such as “beep” a predetermined number of times, and to turn on the call indicator lamp 16 shown in FIGS. Or it blinks, and there is a call response from the user B, so that it is in the vicinity.

  In addition, when the control unit 30 detects the effective reception of the paging response signal transmitted by the mobile terminal 10-2 via the communication unit 32, the control unit 30 detects the reception strength by the reception strength detection circuit of the communication unit 32, and receives the reception It is determined whether the strength belongs to a predetermined range of weak, medium, or strong, and when weak is determined, the notification unit 34 is instructed, and the end of the reception strength display unit 20 in FIGS. When one indicator lamp is turned on and the inside is determined, one end point and the middle indicator lamp of the reception intensity display unit 20 are turned on, and when the intensity is further determined, all of the reception intensity display units 20 are displayed. Control to turn on the indicator lamp.

  In addition, when the control unit 30 does not detect the effective reception of the call response signal even after a predetermined time has passed since the call signal is transmitted, the control unit 30 determines that the time is over and transmits the call signal again as a retry operation. If the effective reception of the call response signal is not detected even if the call signal is transmitted by the retry operation of the number of times, it is determined that there is no response, and control for notifying the response is performed. In this case, as notification without response, the control unit 30 instructs the notification unit 34 to output a notification sound such as “beep”, and to turn on or blink the error indicator lamp 18 shown in FIGS. , Informs that there is no user B nearby.

  Of the above-mentioned "detection of effective signal reception" means that the transmission source code included in the received signal is the transmission source code of the communication partner registered in advance in its own memory (not shown) as the receiving device. This means that the signal is recognized as being addressed to itself and that there is no abnormality in the signal content. Hereinafter, such effective reception may be simply referred to as reception.

(Call response control)
Moreover, the control part 30 performs control which alert | reports a call, when the effective reception of the call signal which the portable terminal 10-2 transmitted via the communication part 32 is detected. In this case, as notification of the call, the control unit 30 instructs the notification unit 34 to output a ringing sound such as “beep” for a predetermined number of times, and to turn on or blink the call indicator lamp 16 shown in FIGS. Then, a call is made from user B, and it is informed that he is nearby.

  Moreover, when the control part 30 detects the effective reception of the paging signal which the portable terminal 10-2 transmitted via the communication part 32, it detects the reception intensity | strength by the reception intensity detection circuit of the communication part 32, and the said reception intensity | strength Is determined to belong to a predetermined range of weak, medium, and strong, and control is performed to display on the reception intensity display unit 20 of FIGS. 2 to 4 as in the case of call control.

(Transmission power control)
When the control unit 30 detects the effective reception of the paging signal transmitted from the portable terminal 10-2 via the communication unit 32 and detects the reception intensity based on the reception intensity detection circuit of the communication unit 32, the detected reception Based on the strength, control is performed to increase or decrease the transmission power of the communication unit 32.

  The control unit 30 initially sets a predetermined maximum transmission power Pmax, for example, Pmax = 1 mW, as the transmission power P of the communication unit 32. This is the same for the mobile terminal 10-2, and thus the mobile terminal 10- 2 transmits a call signal with a predetermined maximum transmission power Pmax. The control unit 30 compares the received intensity detected with the reception of the calling signal with a predetermined value, and if it is equal to or larger than the predetermined value, the initially set maximum transmission power Pmax is set to a predetermined value ΔP, for example, ΔP = The transmission power P decreased by 0.2 mW is controlled to P = Pmax−ΔP = 0.8 mW, the communication unit 32 is instructed, and the call response signal is transmitted with the controlled transmission power P = 0.8 mW. Note that the control unit 30 maintains the initially set maximum transmission power Pmax because the transmission power cannot be increased any more when the reception strength detected with the reception of the calling signal is less than a predetermined value.

  The control unit 30 arranges and transmits the reception intensity detected with the reception of the paging signal in the data part of the paging response signal transmitted with the controlled transmission power.

  When the control unit 30 effectively receives the call response signal transmitted from the portable terminal 10-2 via the communication unit 32, the data strength of the call response signal includes the reception strength. Based on the above, control is performed to increase or decrease the transmission power of the communication unit 32.

  The power control in this case is the same as when detecting the effective reception of the paging signal, and the control unit 30 compares the reception intensity acquired from the data part of the paging response signal with a predetermined value, In the above case, the initially set maximum transmission power Pmax is controlled to a predetermined value ΔP, for example, transmission power P = Pmax−ΔP = 0.8 mW reduced by ΔP = 0.2 mW, and then a call signal is transmitted The communication unit 32 is instructed to transmit a call signal with the controlled transmission power P = 0.8 mW. Note that the control unit 30 maintains the initially set maximum transmission power Pmax because the transmission power cannot be increased any more when the reception strength detected with the reception of the calling signal is less than a predetermined value.

  On the other hand, when the control unit 30 controls the transmission power P between the maximum transmission power Pmax and the minimum transmission power Pmin and detects that the reception intensity is less than a predetermined value, the control unit 30 detects the current transmission power P Is controlled to increase by a predetermined value ΔP.

  By repeating the transmission / reception of the paging signal and the transmission / reception of the paging response signal performed between the two portable terminals 10-1 and 10-2, in a range from the predetermined maximum transmission power Pmax to the predetermined minimum transmission power Pmin, Power control can be performed to increase the transmission power P when the communication distance becomes longer, and to decrease the transmission power P when the communication distance becomes shorter, and control to an appropriate transmission power corresponding to the communication distance. Thus, it is possible to reduce the power consumption and extend the battery life compared to the case where the transmission is fixed at the maximum transmission power.

Note that the control unit 30 transmits a call signal when a predetermined time elapses while the transmission power P is controlled between the maximum transmission power Pmax and the minimum transmission power Pmin by the power control described above, or by a retry operation. In this case, control is performed to return the controlled transmission power P to the initially set maximum transmission power Pmax (transmission control process of the portable terminal).
FIG. 6 is a flowchart showing the meeting control process of the mobile terminal 10-1 shown in FIG.

  In FIG. 6, the control unit 30 of the mobile terminal 10-1 registers the partner that stores the transmission source code in the memory with the mobile terminal 10-2 as the communication partner in step S <b> 1.

  Subsequently, the process proceeds to S2, and when the control unit 30 detects acceptance of a call operation by the call switch of the operation unit 36, the control unit 30 proceeds to S3, instructs the communication unit 32, and calls the call signal by the initially set maximum transmission power Pmax. Send.

  In response to this call signal transmission, if the mobile terminal 10-2 as the communication partner is within a communicable distance, a call response signal is transmitted. For this reason, when the control unit 30 detects the effective reception of the call response signal via the communication unit 32 in S4, the control unit 30 proceeds to S5 and instructs the notification unit 34 to notify the call notification shown in FIGS. The indicator lamp 16 is turned on or blinks, and a call notification sound is output.

  Further, in S5, the control unit 30 instructs the notification unit 34 based on the reception intensity detected with the reception of the call response signal, and displays the reception intensity by the reception intensity display unit 20 shown in FIGS. Further, in S5, the control unit 30 controls the transmission power based on the reception intensity detected on the portable terminal 10-2 side included in the call response signal, and when the call signal is transmitted next in S3, A call signal is transmitted with controlled transmission power.

  On the other hand, when the control unit 30 detects a time-over in which the predetermined time elapses without proceeding to S6 without receiving the call response signal in S4, the control unit 30 performs predetermined re-transmission of the call signal in the routines S6, S7, S3 and S4 If the call response signal cannot be made yet, a retry over is detected in S7, and the process proceeds to S8 to notify that there is no response by outputting a notification sound and lighting or blinking the error indicator lamp 18.

  Subsequently, the process proceeds to S9, and when the control unit 30 detects the effective reception of the paging signal transmitted by the portable terminal 10-2 via the communication unit 32, the control unit 30 proceeds to S10 and instructs the notification unit 34 to output the ringing sound. The call is notified by turning on or blinking the call indicator lamp 16 shown in FIGS. Subsequently, in S13, the control unit 30 detects the reception intensity associated with the reception of the paging signal from the communication unit 32, controls the transmission power based on the reception intensity detected in S13, and the paging response signal in which the reception intensity is arranged in the data part. Is generated, and the communication unit 32 is instructed in S13, and the call response signal is transmitted to the portable terminal 10-2 with the controlled transmission power.

(Meeting notification control between two mobile terminals)
FIG. 7 is a flowchart showing meeting notification control performed between the mobile terminals 10-1 and 10-2. In FIG. 7, the user A holding the portable terminal 10-1 is searching for the user B holding the portable terminal 10-2, and the portable terminal 10-1 accepts the call operation in S21. If it detects, a call signal will be transmitted to the portable terminal 10-2 by S22.

  When the portable terminal 10-2 detects the effective reception of the call signal in S23, the mobile terminal 10-2 detects the reception strength in S24, performs the call notification and the reception strength display in S25, and further controls the transmission power based on the reception strength detected in S26. Then, a call response signal including the reception intensity detected in S24 is generated in S26, and the call response signal is transmitted to the portable terminal 10-1 with the controlled transmission power.

  When the portable terminal 10-1 detects the effective reception of the paging response signal in S28, the mobile terminal 10-1 proceeds to S29, displays the paging response, displays the received strength detected when the paging response signal is received, and further receives the paging response received in S30. When the transmission power is controlled based on the reception strength included in the response signal and the call operation is detected again in S21, the call signal is transmitted to the portable terminal 10-2 with the transmission power controlled in S22.

[Meeting notification system with three mobile terminals]
FIG. 8 shows a meeting notification system when three users A, B, and C have mobile terminals 10-1 to 10-3 and register as mutual communication partners.

  In this case, one-to-one meeting notification control is performed between two of the three mobile terminals 10-1 to 10-3. That is, one-to-one meeting notification control is performed between the mobile terminals 10-1 and 10-2, between the mobile terminals 10-2 and 10-3, or between the mobile terminals 10-1 and 10-3. .

  FIG. 9 is an appearance of the mobile terminal 10-1 used in the meeting notification system of FIG. 8, and the mobile terminals 10-2 and 10-3 are the same. The portable terminal 10-1 is basically the same as that of the embodiment of FIG. 2, but is newly provided with a partner selection switch 28. In this example, the first, second, and third as communication partners. Either can be selected.

  Therefore, when registering the mobile terminal 10-1 and the communication partner, the transmission source code of the mobile terminal 10-2 is stored in the memory corresponding to the selection position “1” of the partner selection switch 28, and the partner is also registered. By storing the transmission source code of the portable terminal 10-3 in the memory corresponding to the selection position “2” of the selection switch 28, the portable terminal 10-2 or 10-3 is selected as the communication partner, and 1 Meeting notice control by one-to-one communication is enabled.

  For example, when the selection position “1” is selected by the partner selection switch 28 of the mobile terminal 10-1, a call signal is transmitted to the mobile terminal 10-2 through the communication path 11a, and communication is performed from the mobile terminal 10-2 accordingly. A call response signal is transmitted to the portable terminal 10-1 through the path 11b.

  When the selection position “2” is selected by the partner selection switch 28 of the mobile terminal 10-1, a call signal is transmitted to the mobile terminal 10-3 through the communication path 13a, and accordingly, communication is performed from the mobile terminal 10-3. A call response signal is transmitted to the portable terminal 10-1 through the path 13b.

  The same applies to the mobile terminals 10-2 and 10-3. By storing the transmission source code of the communication partner in the memory corresponding to the selected position of the partner selection switch 28, the communication partner can be stored. It is possible to control meeting notification by one-to-one communication while selecting.

[Modification of the present invention]
In the above embodiment, when a disaster such as an earthquake occurs using two mobile terminals, an example of searching for a destination is taken as an example. For example, when you meet at a place where congestion is expected or when you go to a place where congestion is expected, you can easily confirm that you are nearby by calling the other party and receiving a call response with a mobile terminal. It can be used, and by using a mobile terminal in this way, even if a disaster such as an earthquake strikes, it will be used to the full, so it can be used fully.

  Further, since the portable terminal is battery-driven, it may be detected that the battery has been consumed and the battery voltage has dropped below a predetermined voltage, and an alarm for prompting battery replacement may be issued.

The present invention is not limited to the above-described embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above-described embodiment.

10-1 to 10-2: Mobile terminals 12A to 12C: Main body 14: Call button 16: Call indicator lamp 18: Error indicator lamp 20: Reception intensity display unit 28: Partner selection switch 30: Control unit 32: Communication unit 34 : Notification unit 36: Operation unit

Claims (8)

Comprising at least two portable terminal means each carried by a different user,
Each of the portable terminal means is capable of communicating within a range that does not exceed a predetermined communication distance in which each other is pre-registered as a communication partner and the partner user can be searched visually.
The one portable terminal means transmits a call signal to another portable terminal means and notifies a call response when a call response signal is received from the other portable terminal means in response to transmission of the call signal,
When the other portable terminal means receives a call signal transmitted from the one portable terminal means, the other portable terminal means notifies a call and transmits a call response signal.
2. The meeting notification system according to claim 1, wherein the first portable terminal means does not receive the call response signal even if a predetermined time has elapsed after transmitting a call signal to the other portable terminal means. A meeting notification system for notifying of no response.
2. The meeting notification system according to claim 1, wherein the first portable terminal means does not receive the call response signal even if a predetermined time has elapsed after transmitting a call signal to the other portable terminal means. The meeting notification system, wherein the call signal is transmitted again, and if no call response signal is received even if the transmission of the call signal is repeated a predetermined number of times, a no-response is notified.
2. The meeting notification system according to claim 1, wherein the portable terminal means transmits the call signal when it detects acceptance of a call operation by its operation means.
2. The meeting notification system according to claim 1, wherein the portable terminal means increases the transmission power when the communication distance becomes long in a range from a predetermined maximum transmission power to a predetermined minimum transmission power, and the communication distance is increased. A meeting notification system characterized by performing power control for reducing transmission power when the time is shortened.
In the meeting notification system according to claim 5,
The portable terminal means includes reception intensity detection means for detecting the reception intensity of the received call signal,
The other portable terminal means, when the reception intensity of the calling signal detected by the reception intensity detection means is not less than a predetermined value or not less than an upper limit of a predetermined range, reduces the current transmission power by a predetermined value and detects the reception power. Transmitting the paging response signal including the reception strength;
When the one mobile terminal means receives the call response signal from the other mobile terminal means and the reception intensity included in the call response signal is equal to or higher than a predetermined value or an upper limit of a predetermined range, A meeting notification system, wherein the next call signal is transmitted by reducing the current transmission power by a predetermined value.
7. The meeting notification system according to claim 6, wherein the mobile terminal means controls the current transmission power to a transmission power lower than the maximum transmission power, and the reception strength is less than the predetermined value or within the predetermined range. The meeting notification system characterized by increasing the transmission power by a predetermined value when it is less than the lower limit.
  2. The meeting notification system according to claim 1, wherein the portable terminal means transmits a call signal to the portable terminal means of the communication partner selected by the operation means when a plurality of communication partners are registered. Meeting announcement system to do.

Images