JP2005136928A - Two-way safety confirmation mobile terminal device for disaster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal device and system for solving the situation wherein safety information cannot be confirmed between the victim of disaster and his party, when a communication failure such as communication disconnection or radio wave cutoff occurs due to destruction of a radio base station, congestion of a telephone line or destruction of buildings or earth and sand in the disaster-stricken area in case of earthquakes or landslides. <P>SOLUTION: In the system, the mobile terminal device includes a function for switching to a frequency lower than the frequency radio wave band for use in normal mode as the frequency for disaster, as separate from the frequency radio wave band, and a function for converting a simple safety message into codes and exchanging the codes between a place in which there is no destruction influence of the disaster-stricken area, and a base station for low frequencies that is capable of avoiding radio wave cutoff. An exchange, installed within the base station, is capable of exchanging the safety message between the victim of disaster and his party by a transmission/reception packet, without stagnating a line with the simple codes in the case of disaster. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention is a portable transmission / reception device capable of reliably confirming safety between a disaster victim and a partner in real time during a disaster.

Traditionally, in the event of an earthquake disaster or landslide disaster, the telecommunications carrier installs a special mobile antenna in the affected area and establishes a communication line for the relief of the affected person, but communication is possible when the road infrastructure is established. Even if the base station does not collapse, the communication line is congested, causing a time lag such as a call interruption for several hours. During that time, the disaster situation cannot be confirmed and an uneasy situation continues.

There is a method to collect information on the disaster area information on a server installed in the local government and provide information using an electronic message board installed in the refuge area, but consider individual victims to provide information not only at the individual level but also to residents in the evacuated area Was lacking.
Patent Literature

JP 20003-274450 JP JP 20002-314634 JP JP 20001-168990 JP JP 08-289369 JP

In the case of conventional technology, when a disaster or building collapses in the affected area at the time of a disaster, or when there is a disaster for a disabled person or an elderly person living alone who cannot be transmitted / received due to a failure in radio wave shielding when confined in an elevator For example, when it is desired to send a message to the other party in real time about the state related to the life safety of the victim, or when the other party wants to confirm the safety of the victim with respect to the victim, the information communication means has not been remedied.
In order to solve these problems, the problem is solved by installing a frequency band and a function for adding a simple message encoding / conversion function in addition to the function normally used for the mobile terminal device, and installing a base station corresponding to this function. It is.

Mobile phone devices for telephone, data, and image services that are normally used have high directivity due to high frequency and radio wave reflection even when seeking relief from outside when they are trapped in an elevator due to earth burial, building collapse, power outage, etc. It will not be used for communication. For this reason, the above-mentioned portable terminal device is additionally equipped with a switching function for switching to a frequency band of several hundred Mhz that is not subject to radio diffraction or radio interference for obstacles other than the frequency normally used for disasters.

In order to reduce the line congestion of the exchange in the event of a disaster, the mobile terminal device converts the shortest destination telephone number and the minimum information of a simple disaster situation message into a packet signal and transmits it, or the sender converts the code when receiving a packet・ Has a function to exchange information in both directions.

Even if the base station in the disaster area is collapsed, the reception base station installed at a remote location opposite to the frequency of the mobile terminal device of the mobile terminal device can avoid the reception failure due to the frequency band having a long radio wave propagation distance without being affected by the disaster it can.

The present invention is intended to solve the conventional inability to communicate at the time of a disaster, securing a line at the time of a disaster, and “disaster status” and “bidirectional safety confirmation” in both directions for disaster victims and destinations in real time. Information can be exchanged with anyone at any time, anywhere, and an emergency communication method is established that takes into account not only healthy subjects but also physically disabled people and elderly people.

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

FIG. 1 shows a system configuration. When transmitting and receiving between the mobile terminal device 1 and the terminal device 8 in the non-stricken area in the event of an earthquake disaster, the base station 3 that is normally used is not used or the base station is not used due to line congestion, the building collapses, or landslides occur. The frequency of the 800 Mhz or 2.4 Ghz frequency band that is normally used is blocked due to radio wave shielding and directivity. For this reason, by installing the low-frequency receiving base 2, the disaster receiving antenna 4 and the exchange 5 installed at a location away from the disaster area, the simple message signal from the sender / receiver is made incapable of communication due to line congestion. The communication satellite 6 or the nearest base station 7 can be accessed.

FIG. 2 shows a method for switching the portable terminal device 1. In addition to the normally used high frequency 9, it is possible to switch to the low frequency 10 by the disaster button 13 shown in FIG. A propagation signal is transmitted from the antenna 11 to the base station 2 facing the base station 2 at a frequency of several hundred Mhz lower than a normally used band installed in a remote place.

When confined due to a power outage in an elevator or a subway, a signal from the mobile terminal device 1 is transmitted to the base station 2 via a reception antenna having a long-term battery, for example, in an elevator intermediate floor in a space where radio waves are shielded. Will also be possible.

FIG. 3 shows details of the mobile terminal device 1. First, the case of transmission from the disaster area will be described. The portable terminal device 1 switches the normal use button 12 to the disaster button 13 to the 800 MHz and 2.4 Ghz frequency band 9 that is normally used and the low frequency band 10 that is several hundred Mhz that is used in this service. The sender can confirm the abbreviated dialing of the telephone number registered in advance and the message content shown in FIG. These messages are converted into codes and have a function of simultaneously transmitting a plurality of telephone numbers to the remote base station 2 by a send button 18.

If the terminal device 1 function for the visually handicapped person such as the physically handicapped or the elderly is specially described, the mobile terminal device 1 displays the disaster button 13 and the message content shown in FIG. By the button 16 function, it can be confirmed on the display screen unit 17 or the voice display unit 18, and the transmission button 19 can transmit to a destination terminal device 8 of a plurality of telephone numbers registered in advance.

A case where the victim portable terminal device 1 receives a signal will be described.
Reception of the antenna 11 can be confirmed by a high-frequency lamp display and a disaster lamp display and ringtone display that are color-coded. The receiver switches the normal button 12 shown in FIG. 5 to the disaster button 13. The telephone number and code of the portable terminal device 8 for which the other party is selected and registered in advance are converted into the other party name and message contents, and the message contents can be sequentially decoded by the screen display unit 17 or the voice display unit 18 by the setting confirmation button 16. Also, when the other party requests a reply

It has a function that is automatically converted into a term.

When the function of the terminal device for the visually impaired person such as the handicapped person or the elderly is specially described, when the portable transceiver 1 receives a reception signal from the outside, the reception signal is transmitted by a ring tone or a vibrator. I will inform you.

Similarly, the message contents can be sequentially confirmed by the functions of the numeric keypad 14 with braille and the setting confirmation button 16 function.

FIG. 4 describes an operation procedure at the time of transmission.
At the time of transmission, the normal button 12 is switched to the disaster mode of the disaster button l3. Next, a plurality of destination telephone numbers to be transmitted in the event of a disaster are determined in order. Next, use the numeric keypad 14 with Braille to set and register the message contents displayed on the screen display unit 17 in the order of “state”, “location”, “physical state 。. Change the“ return ”function when setting an incorrect number. can do. Further, the voice display unit 18 has a voice function, so that it can confirm the destination number and the message content. When the final confirmation is completed, transmission to the remote base 2 can be performed by the transmission button 18.

FIG. 5 describes an operation procedure at the time of reception.
When there is a received signal, the normal button 12 is switched to the disaster button 13. The other party number is displayed on the display screen 17 or voice display 18. Next, the content of the message “status” and “reply” from the other party can be confirmed by a confirmation button. If you select “1” (send an urgent reply) when confirming the “reply”

The transmission operation procedure can be automatically set.

FIG. 6 shows the transmission sequence.
When the signal of the victim portable terminal device 1 is transmitted to the remote base station 2, the exchange 5 received by the antenna 4 of the base station 2 and connected to the antenna 4 only has simple encoded data from a plurality of telephones. Can be transmitted and received over a wide communication range by accessing the satellite 6 or accessing the remote base station 7 without canceling the line congestion. In addition, when a signal is received from a non-disaster area terminal device, a simple encoded signal is transmitted from the satellite 6 or the remote base station 7 to the portable terminal device 1 in the disaster area without congesting the remote base station 2 switch. be able to.

Terms and

The message code shown in the section is a packet number of several tens of bits / second of a telephone number and a simple message code, and the transmission rate is transmitted in the uplink / downlink low frequency band. At the time of transmission, a packet signal encoded with a type or voice that is a transmission message of the mobile terminal device 1 is transmitted to the remote base 2, and at the time of reception, the packet signal from the remote base 2 is converted into a type or voice and the mobile terminal device 1 can be confirmed.

System configuration Switching the frequency of mobile terminal devices Details of mobile terminal devices Operation procedure when sending Operation procedure when receiving Transmission sequence

Explanation of symbols

l: Mobile terminal device 2 in a disaster area 2: Remote base station 3: Base station 4 in a disaster area 5: Transmission / reception antenna 5: Switch 6: Communication satellite 7: Base station 8 in a non-disaster area 8: Terminal device 9 in a non-disaster area Propagation 10: Low-frequency propagation 11: Transmission / reception antenna l2: Normal button 13: Disaster button 14: Braille numeric keypad 15: Transmission button 16: Setting confirmation button 17: Screen display unit 18: Audio display unit 19: Transmission button

Claims (4)

The mobile terminal device has a frequency lower than the above-mentioned frequency for disasters other than the 800 Mhz or 2.4 Ghz frequency band castle of the voice / data / image communication service used in the normal mode. A mobile terminal device that is assigned a frequency band for transmission speed up and down so that radio wave shielding / interference does not occur, and has a function of switching between normal use and disaster frequency. When sending, you can set and register a simple safety message such as the speed dial of the other party's telephone number and the damage status, whereabouts, and physical status, which is the damage information, by screen display or voice confirmation etc. A portable terminal device having a function of transmitting a plurality of destination telephone numbers and message codes to a low-frequency base station by a transmission button. When an incoming call is received, the mobile terminal device receives and displays for a disaster using a ring tone or a vibrator or color-specific incoming light that is distinct from the normal mode, and the incoming call encoding is converted into a message corresponding to the code in advance and displayed on the display screen. Or a portable terminal device having a function of decoding a message by voice or the like. The base station for disaster installed in a place distant from several 10 to several hundred 10 km or more can be propagated over a long distance only for disasters, and the frequency of “Claim 1” and “Claim 2” and “Claim 3” are encoded. Switch the circuit with the above-mentioned minimum signal so that it can receive the packet signal of transmission / incoming and the circuit switch in the base station can avoid communication interruption due to excessive communication temporarily in the switch at the time of disaster, from the base station A remote base station that can send and receive data to a communication satellite or the nearest base station.