WO2000021222A1 - Dispositif de detection de la mise sous tension d'un telephone portable et dispositif d'avertissement - Google Patents

Dispositif de detection de la mise sous tension d'un telephone portable et dispositif d'avertissement Download PDF

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Publication number
WO2000021222A1
WO2000021222A1 PCT/JP1999/005515 JP9905515W WO0021222A1 WO 2000021222 A1 WO2000021222 A1 WO 2000021222A1 JP 9905515 W JP9905515 W JP 9905515W WO 0021222 A1 WO0021222 A1 WO 0021222A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio wave
mobile phone
power
portable phone
received
Prior art date
Application number
PCT/JP1999/005515
Other languages
English (en)
Japanese (ja)
Inventor
Isamu Nagano
Kozo Hashimoto
Satoshi Yagitani
Norio Fukuhisa
Original Assignee
Nisshin Sangyo Co., Ltd.
Kagaku Gijutsu Shinko Jigyodan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nisshin Sangyo Co., Ltd., Kagaku Gijutsu Shinko Jigyodan filed Critical Nisshin Sangyo Co., Ltd.
Priority to AU60041/99A priority Critical patent/AU6004199A/en
Publication of WO2000021222A1 publication Critical patent/WO2000021222A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/23—Indication means, e.g. displays, alarms, audible means

Definitions

  • the present invention relates to a device that detects that a mobile phone is brought into a facility or place, such as a hospital or an aircraft, which is susceptible to radio interference while being powered on, and outputs a warning message and a warning signal as necessary. Things. Background art
  • an object of the present invention is to provide a detection device and a warning device for detecting a power-on state of a mobile phone. Disclosure of the invention
  • the power-on state detection device for a mobile phone includes a test ID transmitter 4 for transmitting a dummy signal for changing or deleting the base station ID stored in the mobile phone, and a radio wave of a communication band of the mobile phone. It comprises a receiving antenna 2, level detecting means 9 and 10 for a received radio wave, and means 12 and 13 for outputting detection signals a and b when the received radio wave exceeds a predetermined level.
  • the test ID transmitter 4 and the receiving antenna 2 should be provided in a passage or gate 1 provided with a radio shielding wall or a radio shielding door. By adopting this means, it is possible to prevent the intensity of the dummy radio wave from becoming excessive, and to avoid the occurrence of radio interference due to the dummy radio wave.
  • a jamming radio wave may be transmitted to a passage or gate, and a test ID transmitter may be installed at a boundary position away from the area where the radio wave reaches. it can.
  • the level detection means 9 and 10 of the received radio wave and the output means 12 and 13 of the detection signal are used by mobile phones of each system including PHS It is preferable to provide a plurality of series in parallel corresponding to the frequency of the communication band to be used. Furthermore, a local oscillator 6 can be provided between the receiving antenna 2 and the level detectors 9 and 10 to reduce the frequency of the received radio wave by superimposing it on the received radio wave.
  • a local oscillator that outputs sine waves with different phases
  • a / D converters for each signal modulated with a different sine wave and a digital signal processor are provided.
  • the digital signal processing unit processes the level detection and output of the detection signal by software.
  • the former warning device includes a power-on state detection device provided with the above-described means, a storage device 15 for storing or not storing a warning message, and a speaker 3 for generating the message, and a comparator 1 of the detection device.
  • the detection signals a and b are output from the terminals 2 and 13, the message storage or the corresponding message of the synthesizing device is output to the speaker driver 17.
  • the latter warning device includes a power-on state detection device having the above-described means, terminal ID recognition means 25 and 26 included in a received signal, and a terminal calling device that calls a terminal based on the recognized ID. 27, and can be realized by operating the terminal calling device when the detection signals a and b are output from the detection device.
  • the warning message in this case should be transmitted to the terminal or output from a separately provided speaker.
  • Mobile phones are broadly divided into narrowly defined mobile phones (CDMs) that enable calls even during high-speed movement.
  • a mobile phone in a narrow sense does not emit radio waves except during a call when receiving ID radio waves transmitted from a base station (when in an area where calls can be made through the base station).
  • ID radio waves transmitted from a base station (when in an area where calls can be made through the base station).
  • a radio wave for base station change or connection confirmation is transmitted.
  • the PHS periodically checks radio waves at short intervals to check the connection even when not in use.
  • a mobile phone in a narrow sense passing through the passage or the gate by providing a transmitter of a dummy radio wave in a passage or a gate such as a guideway to a hospital entrance or a boarding gate of an aircraft, for example. Forcing the device to receive a fake ID radio wave stronger than the original ID radio wave or to receive a radio wave that erases the ID of the base station and forcibly transmit a radio wave for confirming the connection.
  • the receiving antenna 2 for receiving the communication radio wave may be provided inside the passage or inside the gate 1, or may be provided at a position after passing through.
  • a passage or game Provide a wall or door that is shielded from electromagnetic waves to reduce the strength of the original ID radio wave and increase the strength of the dummy radio wave relatively.
  • a reception antenna 2 for receiving radio waves in the PHS communication band and in the narrow-band communication band of a mobile phone is provided in a passage or gate provided with such a transmitter for a radio wave, and signals of these frequencies are received.
  • amplifying it is possible to detect both the mobile phone and the PHS in a narrow sense in the power-on state passing through the passage or the gate.
  • the signal received by the receiving antenna 2 is amplified by the amplifiers 7 and 8, and then compared with the set intensity set by the comparators 12 and 13. It determines that there is a mobile phone in a state (in a broad sense) and outputs detection signals a and b. Since the band used by the mobile phone has a very high frequency and signal processing is difficult, the signal received by the receiving antenna 2 is multiplied by a signal of a similar frequency generated by the local oscillator 6 to obtain By generating a low-frequency signal based on the difference, amplifying the signal at that frequency with an intermediate-frequency amplifier, and comparing it with the set intensity, it is possible to stabilize operation and reduce equipment costs. it can.
  • a warning message is broadcast to instruct the mobile phone holder to turn off the power. If more rigorous processing is required, a staff member is assigned to confirm that the power has been turned off, or the power is forcibly turned off by remote control.
  • the mobile phone when transmitting a signal, transmits the terminal ID of the mobile phone at the same time, so it recognizes the terminal ID of the received signal and calls the mobile phone whose connection has been confirmed from the dummy base station. Is possible.
  • a message asking the user to turn off the mobile phone can be individually transmitted to the person who has the mobile phone.
  • sounding a ring tone on the mobile phone can alert the owner who has forgotten that the mobile phone is turned on.
  • the range of the radio waves can be very short (for example, about 3 meters).
  • This problem can be solved by arranging a plurality of transmitting antennas 19 at intervals commensurate with the reach of radio waves along the direction of movement of people in a passage or gate.
  • the signals sent to the multiple transmitting antennas are the same signal, and are signals output from one terminal call / message transmission circuit.
  • FIG. 1 is a block diagram showing a first embodiment of the present invention, in which a warning message is broadcast by a speaker.
  • FIG. 2 is a block diagram showing a second embodiment of the present invention, in which a terminal ID is recognized and a warning message is transmitted to a mobile phone holder.
  • FIG. 3 is a block diagram showing a third embodiment of the present invention, showing an example in which functions similar to those in FIG. 2 are realized by digital signal processing.
  • reference numeral 1 is a shield gate
  • 2 is a receiving antenna
  • 3 is a spin force
  • 4 is a test ID transmitter
  • a and b are detection signals
  • 19 is a transmitting antenna.
  • FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.
  • Hospital entrance and aircraft A dummy radio wave in the frequency range emitted by the base station of a mobile phone in a narrow sense is sent to a passage or gate 1, which is an entrance or exit to places where carrying-in of mobile phones is prohibited, such as a passage connecting to the boarding gate.
  • a test ID transmitter 4 a receiving antenna 2 for receiving radio waves in the communication band of PHS and mobile phones in a narrow sense, and a speaker 3 are provided.
  • the passage or gate 1 may have a shield structure for blocking ID radio waves transmitted from the base station.
  • the shield structure can be realized by, for example, making the glass of the door netted glass or finishing the walls of the passage with interior materials with wire mesh.
  • a passage to the boarding gate of an aircraft can be realized by making the wall surrounding the passage a metal peripheral wall. If the passage is a tunnel of some length, its entrance may be left open.
  • the radio wave received by the receiving antenna 2 provided in the passage or gate 1 is amplified by the wideband amplifier 5 and then superimposed with the high frequency output from the local oscillator 6 and converted to an intermediate frequency suitable for processing such as amplification. Is done.
  • the obtained intermediate frequency signals are selectively amplified by the intermediate frequency amplifiers 7 and 8 corresponding to the mobile phone frequency band and the PHS frequency band in a narrow sense, respectively. Is detected by the level detectors 9 and 10.
  • the detection level setting unit 11 sets the detection level of each radio wave corresponding to the frequency band of the mobile phone in the narrow sense and the frequency band of the PHS, respectively.
  • the intensity of the detected radio wave is compared with the detection level set in the digital keypad 11 by the comparators 12 and 13.When the level of the detected radio wave is high, the comparators 12 and 13 detect the detection signal a. And b.
  • the warning signals stored in the message memory 15 are sped up by the detection signals a and b. Output to force 3. That is, the message selection transfer circuit 16 is turned on by the detection signals a and b, and the message stored in the message memory 15 is sent to the speaker 3 via the low-frequency amplifier 17.
  • the message may say, for example, "Your mobile phone is turned on. Turn it off in hospitals (or airplanes)." .
  • DSP digital signal processor
  • the test ID transmitter 4 may be a device that constantly emits a dummy radio wave.However, for example, in a passage with little traffic, a human sensor 18 is provided when a person passes through the passage or gate. Only a single radio wave may be transmitted. At hospital entrances that have automatic doors, it is possible to operate the test ID transmitter with a signal from a sensor that automatically opens and closes the door.
  • FIG. 2 is a diagram showing a second embodiment of the present invention.
  • a warning message is directly transmitted to a mobile phone who has called the mobile phone and performed an incoming call operation. It is something to do.
  • Intermediate frequency amplifier provided in the level detection circuit of PHS and mobile phones in a narrow sense 7,
  • the intermediate frequency is superimposed on the output of 8 by the second-stage local oscillators 21 and 22 to obtain a frequency suitable for signal analysis, amplified by amplifiers 23 and 24, and detected and demodulated.
  • Circuit circuit 25 When transmitting a radio wave, a mobile phone outputs a terminal ID signal so that the receiver can recognize the transmission destination.
  • the detection / demodulation / decoding circuit restores the input signal to a signal before modulation and sends it to the terminal ID recognition circuit 26.
  • the terminal ID recognition circuit 26 reads the terminal ID of the mobile phone that transmitted the radio wave from the input signal, and calls the terminal ID and outputs it to the message transmission circuit 27.
  • the message memory 15 stores a message to be transmitted to a speaker or a mobile phone.
  • the selective transfer circuit 16 switches the message transfer destination to the speaker 3 or the terminal according to the operation of the switching switch during operation and the output frequency of the detection signals a and b from the comparators 12 and 13. Switch to 27.
  • the mobile phone sends a radio wave to confirm the connection. This radio wave is received by the reception antenna 2, and if the signal level is equal to or higher than the set value, the detection signals a and b are sent from the comparators 12 and 13 to the selective transfer circuit 16.
  • the terminal ID read from the received radio wave is sent to the terminal call / message transmission circuit 27.
  • the selective transfer circuit 16 sends an operation command and a message to the terminal call / message transmission circuit 27, and the terminal call / message transmission circuit 27 receives the terminal ID received from the terminal ID recognition circuit 26 based on the terminal ID. Make a phone call and send a message requesting that the mobile phone be turned off.
  • Terminal calling-The signal of the message transmission circuit 27 is simultaneously transmitted from a plurality of transmission antennas 19 arranged at predetermined intervals in the passage or gate 1, and the mobile phone in the power-on state passes through the area where the transmission antenna 19 is arranged. Since the warning signal continues to be received while moving, the warning message can be transmitted to the owner who performed the incoming call operation during that time.
  • the selective transfer circuit 16 sends the message in the message memory 15 to the speaker 3 and sends the message to all the members.
  • terminal ID recognition can be performed in a short period of time, so by providing a plurality of terminal call and message transmission circuits 27, if the detection signals a and b are output at a high frequency, It is also possible to send messages directly to individual telephones.
  • FIG. 3 shows a third embodiment of the present invention, and shows an example in which a mobile phone is detected and a terminal ID is recognized by digital processing.
  • the received radio wave amplified by the broadband amplifier 5 is divided into two, and the sine wave of the local oscillator 6 is added to one of the two, and the cosine wave is added to the other to obtain a base band or a low frequency close to this.
  • a quadrature frequency conversion is performed, and each is converted to a digital signal by A / D converters 33, 3 4 through low-pass filters 31, 32.
  • the two digital signals obtained in this manner are input to a digital signal processing unit 36 centered on a DSP (Digital Signal Processor) 35, and are subjected to predetermined arithmetic processing, whereby the difference signal between the two input signals is obtained.
  • Information contained in received radio waves and its intensity can be detected.
  • the digital signal processing unit 36 performs the same processing as in the above-described embodiment, that is, the detection of the signal level of the communication band of the PHS or the mobile phone in a narrow sense, the comparison of the detected signal level with the set value, and the transmission method of the mobile phone.
  • the second execution is performed by executing the corresponding decoding processing and terminal ID recognition processing, and outputting the obtained detection signals a and b and the terminal ID to the selective transfer circuit 16 and the terminal call / message transmission circuit 27.
  • the same detection and warning processing as described in the example can be performed.
  • the processing program registered in the digital signal processing unit 36 can be changed to flexibly change or diversify the transmission method of the telephone. Can respond. Industrial applicability
  • the power-on state detection device for a mobile phone of the present invention By installing the power-on state detection device for a mobile phone of the present invention at, for example, the entrance of a sick person or the boarding gate of an aircraft, it is possible to detect that the mobile phone in the power-on state is brought into a hospital or an aircraft, and Action can be taken.
  • the warning device of the present invention can automatically issue a warning to a person who attempts to bring a mobile phone into a hospital or an aircraft while the power is on, and turn off the power. Therefore, by using the device of the present invention in a place where disturbance due to transmission or reception of a mobile phone is disturbed, occurrence of a failure due to a radio wave can be prevented beforehand, and safe operation of the facility can be achieved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Cette invention se rapporte à un dispositif de détection et à un dispositif d'avertissement, qui servent à empêcher qu'un téléphone portable sous tension ne soit placé dans un lieu où il est susceptible de subir des interférences avec une onde radio. Ce dispositif comprend un émetteur d'identification test (4) servant à transmettre un signal factice destiné à modifier ou à effacer l'identification de la station de base mémorisée dans le téléphone portable, une antenne (2) destinée à recevoir l'onde radio de la bande de communication du téléphone portable, des capteurs de niveau (9, 10) servant à mesurer le niveau de l'onde radio reçue, et des comparateurs (12, 13) servant à émettre des signaux de détection a et b, lorsque l'onde reçue dépasse un niveau prédéterminé. Un téléphone portable au sens strict transmet une onde radio, lorsqu'une onde radio d'identification d'intensité plus grande est reçue ou lorsque le téléphone portable perd l'identification de la station de base qu'il mémorisait. Un téléphone PHS, quant à lui, transmet une onde radio même pendant que l'utilisateur n'est pas en communication. Etant donné la présence d'un émetteur servant à transmettre une onde radio factice, le téléphone portable au sens strict est forcé de transmettre une onde radio pour confirmation de la connexion. Lorsque l'intensité de l'onde radio reçue est supérieure à une intensité préréglée, on estime qu'un téléphone portable (au sens large) sous tension est présent.
PCT/JP1999/005515 1998-10-07 1999-10-07 Dispositif de detection de la mise sous tension d'un telephone portable et dispositif d'avertissement WO2000021222A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU60041/99A AU6004199A (en) 1998-10-07 1999-10-07 Device for detecting power-on of portable phone and warning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/285324 1998-10-07
JP28532498 1998-10-07

Publications (1)

Publication Number Publication Date
WO2000021222A1 true WO2000021222A1 (fr) 2000-04-13

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AU (1) AU6004199A (fr)
WO (1) WO2000021222A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001030099A1 (fr) * 1999-10-22 2001-04-26 Radionor Communications As Systeme utilise afin de determiner si la position d'une unite de communication mobile se trouve dans une zone spatiale limitee
CN100369494C (zh) * 2004-07-21 2008-02-13 株式会社日立制作所 通信方法和基站
CN100382628C (zh) * 2004-12-22 2008-04-16 中兴通讯股份有限公司 移动终端在基站间切换的测试装置
CN107238871A (zh) * 2017-04-12 2017-10-10 中国科学院信息工程研究所 一种用于移动设备出入携带的检测***和检测方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10234080A (ja) * 1997-02-19 1998-09-02 Nippon Soken Inc 移動体通信装置
JPH10261183A (ja) * 1997-03-21 1998-09-29 Nec Telecom Syst Ltd 携帯電話警報装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10234080A (ja) * 1997-02-19 1998-09-02 Nippon Soken Inc 移動体通信装置
JPH10261183A (ja) * 1997-03-21 1998-09-29 Nec Telecom Syst Ltd 携帯電話警報装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001030099A1 (fr) * 1999-10-22 2001-04-26 Radionor Communications As Systeme utilise afin de determiner si la position d'une unite de communication mobile se trouve dans une zone spatiale limitee
CN100369494C (zh) * 2004-07-21 2008-02-13 株式会社日立制作所 通信方法和基站
CN101257320B (zh) * 2004-07-21 2011-06-15 株式会社日立制作所 无线终端装置和网络***
CN100382628C (zh) * 2004-12-22 2008-04-16 中兴通讯股份有限公司 移动终端在基站间切换的测试装置
CN107238871A (zh) * 2017-04-12 2017-10-10 中国科学院信息工程研究所 一种用于移动设备出入携带的检测***和检测方法
CN107238871B (zh) * 2017-04-12 2020-02-14 中国科学院信息工程研究所 一种用于移动设备出入携带的检测***和检测方法

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Publication number Publication date
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