JP3813068B2 - Position detection system and mobile phone terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a position detection system using a mobile phone system suitable for a lifesaving service in a disaster such as an earthquake, and a mobile phone terminal therefor.
[0002]
[Prior art]
In the event of a disaster such as an earthquake, it is urgently necessary for the emergency crew to rescue the survivors inside the collapsed building and to identify the exact location of the victim. When victims are unable to speak, rescue dogs and infrared cameras are used, but the number of successful cases is very low.
[0003]
On the other hand, it is considered extremely effective to use a mobile phone terminal (including PHS) that is always carried by the victim as a disaster rescue information transmitter. In other words, it is possible to specify the presence and location to some extent by calling the victim's mobile phone.
[0004]
In addition, techniques for identifying the position of a mobile phone terminal from the position of a wireless base station using an existing wireless communication system have also been proposed (for example, Japanese Patent Laid-Open Nos. 10-197616 and 7-38951). .
[0005]
[Problems to be solved by the invention]
However, in the above-described method using a mobile phone terminal (including PHS), the ringing sound of the terminal is usually low, or it is set to a small value, or the sound is turned off and replaced with vibration. When there are multiple victims in the vicinity, there is a problem that it is difficult to distinguish from others. Also, although there is a means to identify the individual owner with ringtones, it has no meaning to others.
[0006]
In addition, the method of detecting the position of the mobile phone terminal from the position of the radio base station has a problem that it is impossible to accurately check the presence and specify the location in the event of a disaster.
[0007]
The present invention has been made in view of the above-described problems of the prior art, and uses a mobile phone system to specify a victim at the time of a disaster and a position detection system for accurately specifying a location, It is another object to provide a mobile phone terminal.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a position detection system according to the present invention includes a radio exchange station that instructs a radio base station to transmit an emergency radio signal to a mobile phone terminal, and receives the instruction to the mobile phone terminal. A radio base station that transmits an emergency radio signal, and a mobile phone terminal that, when receiving the emergency radio signal, reads information that identifies a mobile phone terminal owner stored in advance, converts the information into an acoustic signal, and outputs the acoustic signal. It is characterized by that.
[0009]
Alternatively, in the above position detection system, the mobile phone terminal outputs an acoustic signal at a volume higher than a normal ringing tone.
[0010]
Alternatively, in the above-described position detection system, the radio exchange station instructs the radio base station to transmit an emergency radio signal to the detection target mobile phone terminal input for the emergency phone number. It is characterized by that.
[0011]
Alternatively, in the position detection system described above, the radio exchange station instructs the radio base station to send a normal call to the mobile phone terminal, acquires the presence / absence of a response from the mobile phone terminal, and does not receive the response The wireless base station is instructed to transmit an emergency radio signal to the mobile phone terminal.
[0012]
A mobile phone terminal according to the present invention is a mobile phone terminal for a position detection system, the means for receiving an emergency radio signal, the means for storing information for identifying the owner of the mobile phone terminal, and the emergency radio signal Is received, information for specifying the owner of the mobile phone terminal is read out and converted into an acoustic signal, and means for outputting the converted acoustic signal is provided.
[0013]
Alternatively, in the above mobile phone terminal, the means for outputting an acoustic signal is characterized in that the acoustic signal is output at a volume higher than that of a normal ringing tone.
[0014]
Or it is said mobile telephone terminal, Comprising: It has a means to generate | occur | produce a random number, and a means to control the output timing of the said converted acoustic signal based on this generated random number.
[0015]
In the present invention, a specific emergency radio signal is transmitted from a plurality of radio base stations to a mobile phone terminal in accordance with an instruction from the radio switching center using a mobile phone system having a plurality of radio base stations each constituting an area. To do. The mobile phone terminal that has received the emergency radio signal converts the mobile phone terminal owner information (name, phone number, etc.) stored in the terminal into an acoustic signal (eg, Morse code or DTMF signal), for example, a disaster area, etc. Output at a loud volume so that it can be heard. This acoustic signal enables identification of the portable terminal owner and his whereabouts.
[0016]
In addition, by randomly outputting acoustic signals using random numbers, it is easy to identify and isolate victims in the vicinity.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
FIG. 1 is an overall configuration diagram showing an embodiment of a position detection system according to the present invention. In FIG. 1, a plurality of radio base stations 1 form respective areas (cells), and each radio base station 1 is connected to a radio exchange station 2. When the mobile phone terminal 3 exists in a certain area, a line is formed by the radio base station 1 and the radio exchange 2.
[0019]
2 to 4 are diagrams showing the configuration of the first embodiment of the cellular phone terminal according to the present invention. Each part, function, etc. in the figure are examples of means in the present invention.
[0020]
As shown in FIG. 2, in this cellular phone terminal, an emergency signal receiving unit 32 that receives and detects an emergency radio wave signal transmitted from a radio base station from an antenna 31, and a cellular phone terminal. ID information for specifying the owner of the mobile phone terminal when detecting an emergency radio signal (for example, a name, address, contact address, etc. And an emergency dial tone generating unit 33 that reads out from the memory and converts it into an acoustic signal (emergency dial tone), and adds the converted acoustic signal from the speaker 34 to the maximum volume of a normal ringing tone. Or output at a volume larger than this maximum volume.
[0021]
At this time, the emergency dial tone generated by the emergency dial tone generating unit 33 is, for example, as shown in FIG. 3A, the ID information is read from the ID information storage memory 331, and the Morse code generating unit 332 is provided. As shown in FIG. 3B, the ID information is read from the ID information storage memory 331 and converted into a DTMF signal by including a DTMF (Dual Tone Multi Frequency) encoder 333 as shown in FIG. The method to do is considered.
[0022]
In the former case, a person who can understand the Morse code can specify the owner of the mobile phone terminal without a special device. In the latter case, as shown in FIG. 4, an ID information detection device that receives an emergency dial tone of a DTMF signal with a microphone 41 and decodes it into ID information with a DTMF decoder 42 is required. Even in the case of outputting an emergency dial tone based on the former Morse code, ID information for identifying the mobile phone terminal owner with means for receiving the emergency dial tone of the Morse signal with a microphone and deciphering the ID information from the Morse signal A detection device can be used. Further, the Morse code and the DTMF signal are examples, and other signals may be used.
[0023]
FIG. 5 is a diagram showing a configuration of a second exemplary embodiment of the cellular phone terminal according to the present invention. Each part, function, etc. in the figure are examples of means in the present invention.
[0024]
In this mobile phone terminal, an emergency dial tone output control unit 35 and a random number generation unit 36 are added to the emergency dial tone generation unit 33 of the mobile phone terminal according to the first embodiment, and the random number generated by the random number generation unit 36 is used. The emergency dial tone output control unit 35 determines and controls the timing of outputting the acoustic signal of the emergency dial tone generation unit 33. For example, the emergency dial tone generation unit 33 is activated using a random number timer generated when an emergency radio signal is received, or the acoustic signal generated by the emergency dial tone generation unit 33 is stored and the timer is used. Various means are conceivable, such as outputting after delaying.
[0025]
As a result, the timing at which acoustic signals are output becomes random, so that even when multiple mobile phone terminals receive emergency radio signals in close proximity, the generated acoustic signals can be identified and isolated It becomes.
[0026]
Next, an outline of the operation of the position detection system shown in FIG. 1 will be described.
(1) First, the wireless switching center 2 instructs the radio base station 1 in the area where there was a disaster such as an earthquake to transmit an emergency radio signal to the mobile phone terminal 3 whose position is to be detected.
(2) Next, the wireless base station 1 that has received an instruction from the wireless switching center 2 transmits an emergency radio signal.
(3) Next, when receiving the emergency radio signal, the mobile phone terminal 3 for position detection reads ID information for identifying the owner of the mobile phone terminal from the memory, converts it into an acoustic signal, Output from the loudspeaker at a volume higher than the volume or normal ringing tone.
[0027]
In (1), for example, as shown in the operation flow of FIG. 6, the radio switching center 2 specifies a call from another telephone terminal / mobile phone terminal (see FIG. 6). For example, when an input of the number of the mobile phone terminal 3 to be detected is received by a call to an emergency specific number), the radio base station transmits an emergency radio signal to the mobile phone terminal 3 to be detected 1 or as shown in FIG. 7, the radio base station 1 in the disaster area is specified on the radio switching center 2 side, and all the mobile phones in the area are identified for each radio base station 1. A case may be considered where an instruction to transmit an emergency radio signal to the terminal 3 is given.
[0028]
In addition, each radio base station 1 checks whether there is a response within a certain time by making a normal call for confirmation of safety, for example, to the mobile phone terminal 3 before sending an emergency radio signal. However, an emergency radio signal may be transmitted only to the mobile phone terminal 3 that has not been present.
[0029]
In the present invention, it goes without saying that mobile phone terminals include terminals of various wireless communication systems having PHS and portability.
[0030]
【The invention's effect】
As apparent from the above description, the present invention has the following effects.
・ Sound signals including ID information for identifying the owner of the mobile phone terminal are output at a louder volume than the normal dial tone, making it easier for rescuers to recognize the presence of the mobile phone terminal and increasing the accuracy of sound source location identification. .
-Since ID information is inherent in the output acoustic signal, the terminal owner can be specified, and quick response such as contact with the victim's family becomes possible.
-If the output timing of the acoustic signal is random, it is possible to identify and isolate the emergency dial tone even at the site where many victims have occurred.
Furthermore, if safety confirmation is performed by normal transmission before transmitting an emergency radio signal, it is possible to avoid transmission of a meaningless emergency radio signal to a healthy person.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a position detection system according to an embodiment of the present invention. FIG. 2 is a functional block diagram of a mobile phone terminal according to a first embodiment of the present invention. Fig. 4 is a functional block diagram of an emergency dial tone generation unit in the above embodiment example. Fig. 4 is a functional block diagram of a DTMF type ID information detecting device in the above embodiment example. Fig. 5 is a mobile phone according to a second embodiment example of the present invention. Functional block diagram of telephone terminal FIG. 6 is an operation flow diagram according to an embodiment of the present invention (part 1).
FIG. 7 is an operation flowchart according to the embodiment of the present invention (part 2).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Wireless base station 2 ... Wireless switching center 3 ... Cell-phone terminal 31 ... Antenna 32 ... Emergency signal receiver 33 ... Emergency dial tone generator 331 ... ID information storage memory 332 ... Morse code generator 333 ... DTMF encoder 34 ... Speaker 35 ... Emergency dial tone output controller 36 ... Random number generator 41 ... Microphone 42 ... DTMF decoder

Claims (4)

A radio exchange that instructs the radio base station to transmit an emergency radio signal to the mobile phone terminal;
A radio base station that transmits an emergency radio signal to the mobile phone terminal in response to the instruction;
When the emergency radio signal is received, it comprises a mobile phone terminal that outputs an acoustic signal ,
The radio switching center instructs the radio base station to make a normal call to the mobile phone terminal,
When a response from the mobile phone terminal cannot be detected within a predetermined time, the radio base station is instructed to transmit an emergency radio signal to the mobile phone terminal that has not responded. Position detection system. The position detection system according to claim 1 , wherein the acoustic signal is obtained by converting information specifying a mobile phone terminal owner stored in advance in the mobile phone terminal . A mobile phone terminal for a position detection system,
Means for receiving an emergency radio signal;
An output means for outputting an acoustic signal;
Means for generating a random number upon receipt of an emergency radio signal;
Means for controlling the output timing of the acoustic signal based on the generated random number;
A mobile phone terminal characterized by comprising: Means for storing information identifying the mobile phone terminal owner;
When the emergency radio signal is received, it further comprises conversion means for reading out information identifying the mobile phone terminal owner and converting it into an acoustic signal,
4. The mobile phone terminal according to claim 3 , wherein the output means outputs the acoustic signal converted by the conversion means .

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