JP2007184878A - Radio wave repeater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a portable telephone to perform communication in an area where the portable telephone is difficult to be used. <P>SOLUTION: A balloon 3 sends up a repeater 2 in the sky for relaying radio waves between a base station and the portable telephone. Since this enables radio waves to be relayed between the portable telephone of a sufferer existing in an area where communication by a portable telephone is difficult and the base station, the sufferer can communicate through the portable telephone to notify the situation and present location of the sufferer by speech communication. Additionally, by sending up the balloon 3 in the sky, it is possible to locate the sufferer with the balloon 3 as a mark. Further, by applying fluorescent paint to the surface of the balloon 3, the balloon 3 can be easily discovered. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a radio wave relay device that relays radio waves between a base station and a mobile phone.

  With the advent of mountain climbing boom centering on middle-aged and elderly people in recent years, the number of casualty accidents for beginners with poor mountain knowledge is increasing as the number of people who enjoy climbing casually increases.

  When a distress accident occurs, a distress or a companion often makes a rescue request by radio. Recently, the number of places where mobile phones can be used even in mountainous areas due to the spread of mobile phones has increased the opportunity for rescue requests to be made by mobile phones. A family member who is worried that he or she will not run down the mountain hut or come down after the scheduled date may make a rescue request.

  When a rescue request is made, the local government or a private company will fly a helicopter to find the victim, and a local police mountain rescue team will rescue them. When a climber carries a wireless beacon, he searches for a victim by following the radio waves emitted by the beacon. In addition, the thing of patent document 1 is known as an apparatus which transmits a distress signal.

In the event of an emergency such as the inability of a ship to navigate at sea, a rescue request is made to the Japan Coast Guard or a ship navigating nearby. However, many pleasure boats owned by individuals are not equipped with wireless devices, but when a mobile phone can be used, a rescue request is made by the mobile phone. If a rescue request is made, the Coast Guard patrol boat will be dispatched to the sea area to rescue the victim.
Japanese Utility Model Publication No. 6-70750

  However, the places where mobile phones can be used in mountainous areas are limited to the summits and ridges where the radio wave conditions have improved due to mountain diffraction, and the radio wave conditions are poor in valleys, so mobile phones can be used anywhere in the mountainous areas. The phone is not available. On the sea, it is possible to use a mobile phone even at a point several kilometers away from the land, but if it is too far from the land, there is a problem that the received radio wave becomes weak and it becomes difficult to request a rescue.

  In addition, even if a rescue request can be actually made, it is difficult to notify the exact location of the victim, so there is a problem that it takes time for the rescue team to arrive on site. In the case of a rescue request from a non-distressed person by a distress's family or acquaintances, it is difficult to know the location information and situation of the distressed person, and the search takes time.

  The present invention has been made in view of the above, and an object of the present invention is to enable communication using a mobile phone even in an area where communication using a mobile phone is difficult, and to easily identify the location of the victim. There is.

  The radio wave relay apparatus according to the present invention includes a first antenna for transmitting / receiving radio waves to / from a base station and a radio wave transmitted / received between the base station and the mobile phone by a second antenna for transmitting / receiving radio waves to / from a mobile phone. It is characterized by having a relay means for relaying and a balloon for attaching the relay means and for floating the relay means in the sky.

  In the present invention, a relay means having a first antenna for communicating with a base station and a second antenna for communicating with a mobile phone is suspended in the sky by a balloon, thereby Since the radio waves can be relayed between the mobile phone of the victim in the bad area and the base station, the victim can make a rescue request with the mobile phone. In addition, by floating a balloon above the victim, the location of the victim can be easily identified using the balloon as a landmark.

  ADVANTAGE OF THE INVENTION According to this invention, even in the area | region where communication with a mobile phone is difficult, communication by a mobile phone is enabled and the location of a victim can be specified easily.

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

  FIG. 1 is a schematic diagram showing a configuration of a radio wave relay device 1 according to the present embodiment. As shown in FIG. 1, the radio wave relay device 1 in the present embodiment includes a repeater 2, a balloon 3, and a wire 4.

  The repeater 2 has a first antenna for transmitting / receiving radio waves to / from a base station and a second antenna for transmitting / receiving radio waves to / from a mobile phone of the victim. Radio waves are relayed between the mobile phone and the base station.

  The balloon 3 floats the repeater 2 in the sky. In the vicinity of the gas filling port of the balloon 3, a hook for holding the repeater 2 and a wire 4 for controlling the altitude and position of the balloon 3. It has. The balloon 3 is made of a plastic film having excellent gas low permeability and durability, and a fluorescent paint is applied to the surface.

  By using the balloon 3 to lift the repeater 2 to the sky, it is possible to relay radio waves between the mobile phone of the victim and the base station in an area where the radio wave condition is poor. Can do. Moreover, the position of the victim can be known by using the balloon 3 lifted above as a landmark. Further, by applying a fluorescent paint on the surface of the balloon 3, the discovery of the balloon 3 is facilitated.

  The repeater 2 will be described in detail with reference to FIG. As shown in FIG. 2, the repeater 2 includes a dipole antenna 21, a signal amplifier 22, a parabolic antenna 24, a power source 23, a rescue signal transmitter 27, a power switch 25, and an operation lamp 26.

  The repeater 2 receives radio waves from the base station by the omnidirectional dipole antenna 21, amplifies the received radio waves by the signal amplifier 22, and radiates it toward the victim's mobile phone using the parabolic antenna 24. . When transmitting radio waves from a mobile phone, radio waves from the mobile phone are received by the parabolic antenna 24, the received radio waves are amplified by the signal amplifier 22, and radiated toward the base station by the dipole antenna 21.

  The repeater 2 is provided with a rescue signal transmitter 27. When the balloon 3 reaches a predetermined altitude, it automatically transmits a rescue signal to the registered number. The altitude of the balloon 3 is measured by, for example, an altimeter or a wire 3. Note that a battery is used as the power supply 23 of the repeater 2, the operation of the repeater 2 is started by the power switch 25, and the operation status of the repeater 2 is confirmed by the operation lamp 26.

  Next, a method of using the radio wave relay device 1 in the present embodiment will be described.

  First, the victims connect a gas cylinder 5 as shown in FIG. 3 to the gas inlet of the balloon 3, and enclose the gas compressed in the gas cylinder 5 in the balloon 3. A gas cylinder 5 shown in FIG. 3 is compressed and filled with a gas lighter than air such as hydrogen or helium to be enclosed in the balloon 3, and a pressure gauge 6 is attached. The victim is referred to the pressure gauge 6 and is used as a guide when gas is sealed in the balloon 3. A backflow prevention valve for preventing backflow of the sealed gas is attached to the gas filling port of the balloon 3.

  Next, the repeater 2 is attached to a hook provided near the gas filling port of the balloon 3, and the power switch 25 of the repeater 2 is turned on. Then, the balloon 3 is raised to the point where the mobile phone can communicate, and a rescue request is made when the communication is possible. The victim can maintain the optimal communication conditions by holding the wire 4 and adjusting the height of the balloon 3.

  As described above, according to the present embodiment, the repeater 2 that relays radio waves between the base station and the mobile phone is lifted by the balloon 3 so that communication with the mobile phone is difficult. Since the radio waves can be relayed between the mobile phone of the victim and the base station, the victim can communicate with the mobile phone and can inform the situation and current position of the victim through a call. Further, by raising the balloon 3 to the sky, it is possible to know the position of the victim using the balloon 3 as a mark, and by applying a fluorescent paint on the surface of the balloon 3, the balloon 3 can be easily found. Further, since the altitude of the balloon 3 can be controlled by attaching the wire 4 to the balloon 3, it is possible to maintain an optimal communication state between the base station and the mobile phone.

  In recent years, mobile phones equipped with GPS (Global Positioning System) have become widespread, so it is possible to notify the other party of GPS positioning data at the time of a rescue request. It can inform you of the approximate position.

It is a schematic diagram which shows the structure of the electromagnetic wave relay apparatus in one embodiment. It is a block diagram which shows the structure of a repeater. It is a schematic diagram which shows the gas cylinder for inject | pouring gas into a balloon.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Radio wave relay apparatus 2 ... Repeater 3 ... Balloon 4 ... Wire 5 ... Gas cylinder 6 ... Pressure gauge 21 ... Dipole antenna 22 ... Signal amplifier 23 ... Power supply 24 ... Parabolic antenna 25 ... Power switch 26 ... Operation lamp 27 ... Rescue signal transmission vessel

Claims (6)

A first antenna for transmitting and receiving radio waves to and from the base station; a relay means for relaying radio waves transmitted and received between the base station and the mobile phone by a second antenna for transmitting and receiving radio waves to and from the mobile phone;
It is possible to attach the relay means, a balloon for floating the relay means in the sky,
A radio wave relay device comprising:   The radio wave relay apparatus according to claim 1, wherein the first antenna is a dipole antenna, and the second antenna is a parabolic antenna.   The radio wave relay device according to claim 1, further comprising a transmission unit configured to transmit a rescue signal when the balloon reaches a predetermined altitude.   The radio wave relay device according to any one of claims 1 to 3, further comprising a wire for controlling an altitude of the balloon.   The radio wave relay device according to claim 1, wherein a fluorescent paint is applied to a surface of the balloon. The radio wave relay device according to any one of claims 1 to 5, wherein the balloon is provided with a backflow prevention means for preventing a backflow of gas enclosed therein.

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