WO2019021869A1 - 通知方法、通知装置、および発音装置 - Google Patents

通知方法、通知装置、および発音装置 Download PDF

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Publication number
WO2019021869A1
WO2019021869A1 PCT/JP2018/026555 JP2018026555W WO2019021869A1 WO 2019021869 A1 WO2019021869 A1 WO 2019021869A1 JP 2018026555 W JP2018026555 W JP 2018026555W WO 2019021869 A1 WO2019021869 A1 WO 2019021869A1
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WIPO (PCT)
Prior art keywords
sound
pattern
notification
unit
target area
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/026555
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English (en)
French (fr)
Japanese (ja)
Inventor
利明 中山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
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Denso Corp
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 Denso Corp filed Critical Denso Corp
Priority to DE112018003814.9T priority Critical patent/DE112018003814T5/de
Priority to CN201880049022.3A priority patent/CN110998680A/zh
Publication of WO2019021869A1 publication Critical patent/WO2019021869A1/ja
Priority to US16/749,364 priority patent/US20200160673A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B6/00—Tactile signalling systems, e.g. tactile personal calling systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination

Definitions

  • the present disclosure relates to a technology for detecting and notifying a sound wave.
  • Patent Document 1 a technique is proposed in which a possessing device possessed by a subject person such as a pedestrian makes a notification when it detects a sound emitted from a vehicle.
  • One aspect of the present disclosure is to provide a technology for suppressing notification to a subject in a safe position and notifying a subject in an unsafe position.
  • the notification method according to an aspect of the present disclosure is a notification method performed by a possessing device that a subject person holds and acts to notify that the possessing device is located in a predetermined target area.
  • the possessing device detects the pattern sound transmitted by the sound wave transmission unit.
  • the sound wave transmission unit is configured to transmit a pattern sound representing a sound of a specific pattern to the target area.
  • the possessing device detects a pattern sound, it notifies the target person.
  • 1st Embodiment it is a block diagram which shows the structure of a notification system.
  • 1st Embodiment it is a side view which shows the example of a setting of a notification area
  • 1st Embodiment it is a top view which shows the example of a setting of a notification area
  • 2nd Embodiment it is a top view which shows the example of a setting of a notification area
  • the notification system 1 illustrated in FIG. 1 is a system in which the possessing device 1B notifies an object person when the possessing device 1B possessed and acted by the object person is located within a predetermined target area.
  • the target person represents a person to be notified.
  • general pedestrians, visually impaired persons, etc. correspond to the target person.
  • the target area indicates an area that may pose a danger to the target person, that is, an unsafe area.
  • the target area is set only within a specific direction and angle range with respect to the sound source.
  • the target area of the present embodiment is set at the end of the platform of the railway station, and within a predetermined angle range downward from the sound source speaker, for example, within the range of 5 deg around the sound axis It is set.
  • the notification system 1 includes a sound field generation device 1A and a possession device 1B as shown in FIG.
  • the sound field generation device 1A is a device which is disposed outside the possession device 1B and forms a notification area 51 which is a sound field by ultrasonic waves.
  • the sound field generation device 1A includes a processing unit 10 and an ultrasonic wave output unit 20.
  • the notification area 51 is set to include at least a part of the target area, and in the present embodiment, it is assumed that the notification area 51 matches the target area.
  • the possessing device 1B is a device that the subject person possesses and acts, and is configured as, for example, a mobile phone, a smartphone, a wearable computer, or the like.
  • the possessing device 1 ⁇ / b> B includes a control unit 30, an ultrasonic detection unit 41, and a notification unit 42.
  • the ultrasonic wave output unit 20 includes an ultrasonic wave amplifier 21 and an ultrasonic wave speaker 22.
  • the ultrasonic amplifier 21 amplifies the waveform of the signal generated by the processing unit 10 so as to have a preset amplification factor, and outputs the amplified signal from the ultrasonic speaker 22.
  • the ultrasonic amplifier 21 may be provided for each ultrasonic speaker 22 or may be provided for a plurality of ultrasonic speakers 22.
  • the ultrasonic speaker 22 is an ultrasonic generator that generates an air vibration having a frequency higher than that of human hearing, for example, 20 kHz or more, and is configured as a piezoelectric speaker suitable for ultrasonic wave reproduction, for example.
  • Piezoelectric speakers include ceramic speakers, piezo speakers, and the like.
  • the ultrasonic speaker 22 is arrange
  • An area where the sound wave is output by the ultrasonic speaker 22, that is, an area where the sound wave can be detected by the possession device 1 B is referred to as a notification area 51.
  • the notification area 51 shown in FIGS. 2 and 3 is, for example, -6 dB or more with respect to the sound pressure at the center of the direction in which the sound wave is output by the ultrasonic speaker 22, that is, the sound pressure at the sound axis. Indicates an area.
  • the plurality of ultrasonic speakers 22 are set such that the area between yellow line 73 such as a Braille block disposed on platform 72 and the end 74 of platform 72 is within notification area 51.
  • the plurality of ultrasonic speakers 22 are disposed at substantially equal intervals such that the entire notification area is the notification area 51, with the area between the yellow line 73 and the end 74 of the platform 72 as the notification area.
  • the notification areas 51 of the plurality of ultrasonic speakers 22 may be arranged so as to partially overlap each other.
  • the target person can be notified. That is, in the notification system 1, the target person himself is in danger of falling before the target person falls from the end 74 of the platform 72 to the travel area 78 of the railway vehicle 80 for the target person who possesses the possessing device 1B. Make them aware of what they are doing.
  • the ultrasonic detection unit 41 is configured as a microphone capable of detecting the sound emitted from the ultrasonic speaker 22. It is preferable that the ultrasonic detection unit 41 can detect an ultrasonic wave, but if the sound emitted from the ultrasonic speaker 22 is modulated to an audible sound, it may be configured to be able to detect the audible sound.
  • the ultrasonic wave detection unit 41 can adopt, for example, a microphone for voice communication.
  • the notification unit 42 has a known configuration for notifying a target person of the possessing device 1B.
  • the notification unit 42 can be configured as, for example, a speaker for notification by sound, a light emission unit for notification by light, a vibration unit for notification by vibration, a odor detection unit for notification by odor, or the like.
  • the notification unit 42 is configured as a vibrating unit having a known vibrator.
  • the processing unit 10 of the sound field generation device 1A and the control unit 30 of the possessing device 1B are each a well-known micro computer having CPUs 11 and 31 and semiconductor memories (hereinafter memories 12 and 32) such as RAM, ROM and flash memory. It is built around a computer.
  • memories 12 and 32 semiconductor memories
  • Various functions of the processing unit 10 and the control unit 30 are realized by the CPUs 11 and 31 executing programs stored in the non-transitional tangible recording medium.
  • the memories 12 and 32 correspond to the non-transitional tangible storage medium storing the program.
  • the non-transitional tangible recording medium has a meaning excluding the electromagnetic wave in the recording medium.
  • the number of microcomputers constituting the processing unit 10 and the control unit 30 may be one or more.
  • the processing unit 10 of the sound field generation device 1A includes a pattern generation unit 16 and a signal generation unit 17 as a configuration of a function realized by the CPU 11 executing a program.
  • the control unit 30 of the possessing device 1B includes a filter unit 36, a pattern recognition unit 37, and a notification determination unit 38 as the configuration of functions realized by the CPU 31 executing a program.
  • the method for realizing these elements constituting the processing unit 10 and the control unit 30 is not limited to software, and some or all of the elements may be realized using one or more hardware.
  • the electronic circuit may be realized by a digital circuit including many logic circuits, an analog circuit, or a combination thereof.
  • the function of the pattern generation unit 16 generates a signal pattern for outputting a pattern sound.
  • the pattern sound is a sound wave transmitted to the notification area 51, and represents a sound having a specific pattern.
  • the signal pattern generated here is a pattern consisting of four cycles of a pattern in which sound is generated for a time of ⁇ T1 and then silence for a time of ⁇ T2 and a silence time of ⁇ T3.
  • Adopt a pattern that repeats continuously.
  • ⁇ T1 and ⁇ T2 are arbitrarily set according to the resolution of the ultrasonic wave detection unit 41, and for example, ⁇ T1 and ⁇ T2 are each set to about 0.8 to 25 ms.
  • ⁇ T3 is, for example, a time equal to or longer than the sum of ⁇ T1 and ⁇ T2, and is set to, for example, about 1.6 to 500 ms.
  • the wavelength is shorter than that of the audible sound, so that even if ⁇ T1 and ⁇ T2 are set to be shorter, recognition can be facilitated.
  • the function of the signal generation unit 17 generates a pattern sound by modulating the ultrasonic wave to a lower frequency, and outputs the pattern sound to the notification area 51 as a sound having directivity.
  • the reason that the function of the signal generation unit 17 generates directional sound is to limit the notification area 51 to an area that is dangerous to the target person and to make it difficult for the notification area 51 to spread to an area that is not dangerous. That is, the notification area 51 is generated by an ultrasonic wave which is a sound having a characteristic that the sound pressure rises sharply as it approaches the sound axis.
  • the signal generation unit 17 for example, about 4 kHz that can be detected by the ultrasonic detection unit 41 by amplitude-modulating the waveform of the ultrasonic wave having a predetermined amplitude of about 40 kHz, for example.
  • a waveform whose amplitude is changed so as to be a frequency and a signal pattern generated by the pattern generation unit 16 is generated.
  • the control unit 30 of the possessing device 1B uses the functions of the filter unit 36, the pattern recognition unit 37, and the notification determination unit 38 to carry out a danger notification process described later.
  • the danger notification process executed by the control unit 30 of the possessing device 1B will be described using the flowchart of FIG.
  • the danger notification process is a process that is started when a predetermined application related to the danger notification is activated in the possessing device 1B, and then repeatedly performed.
  • the control unit 30 uses the function of the filter unit 36 to generate a sound wave corresponding to the modulated frequency output from the ultrasonic speaker 22 from the sound wave detected by the ultrasonic detection unit 41. Extract.
  • sound waves are analyzed as software processing, and only sound waves in a predetermined frequency band are extracted. Note that this processing may be realized using known hardware such as a known band pass filter.
  • step S120 the control unit 30 recognizes the pattern sound using the function of the pattern recognition unit 37.
  • the pattern sound here is a sound wave generated by the pattern generation unit 16 and output from the ultrasonic speaker 22.
  • it is determined whether the sound wave of the frequency extracted in S110 detects a sound for a time corresponding to ⁇ T1 and detects N cycles of a pattern in which silent for at least the time corresponding to ⁇ T2 is detected. It recognizes that the pattern sound has been detected when the pattern of has been detected.
  • the value of N may be set arbitrarily, but is set to, for example, a value of about 2.
  • step S130 the control unit 30 determines whether the pattern sound has been detected using the function of the notification determination unit 38. If the pattern sound can not be detected in S130, the control unit 30 determines that the possessing device 1B is out of the notification area 51, and ends the danger notification process.
  • control unit 30 proceeds to S140, and performs notification to the target person 81 by vibrating the vibrator constituting the notification unit 42 as shown in FIG. .
  • the target person 81 wearing the possessing device 1B receives the notification by the notification unit 42, and can therefore recognize that he is in the notification area 51. [1-3. effect] According to the first embodiment described above, the following effects can be obtained.
  • the control unit 30 of the possession device 1B detects the pattern sound transmitted by the ultrasonic wave output unit 20.
  • pattern sounds have directivity.
  • the control unit 30 notifies the subject.
  • the target person in the notification area 51 formed of the pattern sound is notified. Therefore, if the unsafe area is set in the notification area 51, the target person in the safe position Can be suppressed and notifications can be given to subjects who are in an unsafe position.
  • the sound field generation device 1A generates pattern sound by ultrasonic waves and transmits the pattern sound to the target area via the ultrasonic wave output unit 20.
  • control part 30 of possession device 1B is constituted so that a pattern sound transmitted from ultrasonic wave output part 20 may be detected.
  • a target region can be set in a narrower range, and a notification formed by this pattern sound Only the possessing device 1B located in the area 51 can be configured to perform the notification.
  • the sound field generation device 1A modulates the ultrasonic wave to a lower frequency to form the notification area 51 with pattern sound, and transmit the pattern sound to the target area.
  • the control unit 30 of the possession device 1B is configured to detect the pattern sound transmitted by the ultrasonic wave output unit 20.
  • the configuration can be made to conform to the frequency of the sound wave receivable by the possession device 1B. .
  • control unit 30 of the possessing device 1B is configured to notify the subject by vibrating the vibrator that constitutes the notification unit 42.
  • the notification since the notification is given by vibration, the notification should be performed well even when the target person is a visually impaired person or when the target person is positioned in a region where the environmental sound is large. Can.
  • the processing unit 10 of the sound field generation device 1A is a function of the pattern generation unit 16 and the signal generation unit 17, and a sound wave signal including pattern sound representing sound of a specific pattern having directivity.
  • Configured to generate The ultrasound output unit 20 is configured to output a sound wave based on the sound wave signal to the target area.
  • a pattern sound having directivity to the target area is emitted. Therefore, if the pattern sound can be detected in the target area, the target person is positioned in the target area. Can be notified.
  • the sound field generation device 1A is disposed on the ceiling 71 of the platform 72, and the target area and the notification area 51 are set at the end of the train station's home.
  • the sound field generation device 1A is mounted on a vehicle 86 traveling on a road, such as a passenger car, and the target area and the notification area 52 are on the road. It differs from the first embodiment in that it is set.
  • the sound field generation device 1A is mounted on a vehicle 86, and the ultrasonic speakers 22 are arranged in the traveling direction on the surface facing the traveling direction of the vehicle 86 Be done.
  • the ultrasonic speaker 22 is disposed in front of the vehicle 86 and directed to the front of the vehicle.
  • At least one ultrasonic speaker 22 may be disposed.
  • the ultrasonic speaker 22 may be disposed toward the rear of the vehicle on the rear surface of the vehicle.
  • the processing unit 10 detects the traveling direction of the vehicle and only the ultrasonic speaker 22 on the traveling direction side of the vehicle operates. You may
  • a target area is set on the road on the traveling direction side of the vehicle 86, and a notification area 52 as a sound field by the ultrasonic speaker 22 is formed to coincide with the target area. If a target person 87 who possesses the possessing device 1B is present in the notification area 52, the notification can be performed in the same manner as the configuration of the first embodiment.
  • the notification area 52 is formed on the traveling direction side of the vehicle 86, so that notification can be made to the target person 87 located on the route of the vehicle 86. Therefore, even when the running noise of the vehicle 86 is small, the target person 87 can be favorably notified that the vehicle 86 approaches.
  • the sound wave for changing the strength of the sound pressure is generated, but it is not limited to this.
  • the sound field generation device 1A may generate, for example, pattern sound by changing the frequency of sound or pattern sound by synthesis of sounds of a plurality of frequencies. Further, the sound field generation device 1A may generate a pattern sound combining the strength of sound pressure, the change of sound frequency, the synthesis of sounds of a plurality of frequencies, and the like.
  • the sound field generation device 1A generates the pattern sound of the audible sound by the ultrasonic modulation, but for example, the pattern sound of the ultrasonic range of 20 kHz or more may be generated. According to such a configuration, since the ultrasonic range is a range which is hard to be included in the environmental sound, it is possible to suppress false detection of the pattern sound.
  • the plurality of functions of one component in the above embodiment may be realized by a plurality of components, or one function of one component may be realized by a plurality of components . Also, a plurality of functions possessed by a plurality of components may be realized by one component, or one function realized by a plurality of components may be realized by one component.
  • part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above-described embodiment may be added to or replaced with the configuration of the other above-described embodiment.
  • all the aspects contained in the technical thought specified from the wording described in the claim are an embodiment of this indication.
  • each device that is a component of the notification system 1 a program for causing a computer to function as the notification system 1, non-transitional substance such as a semiconductor memory recording this program
  • non-transitional substance such as a semiconductor memory recording this program
  • the present disclosure can also be realized in various forms such as a recording medium and a notification method.
  • the sound field generation device 1A corresponds to the sound generation device referred to in the present disclosure
  • the possession device 1B corresponds to the notification device referred to in the present disclosure
  • the pattern generation unit 16 and the signal generation unit 17 correspond to the sound wave generation unit in the present disclosure
  • the ultrasonic wave output unit 20 corresponds to the sound wave output unit and the sound wave transmission unit in the present disclosure.
  • the notification part 42 in the said embodiment is corresponded to the vibration part said by this indication.
  • the processes of S110 to S140 executed by the control unit 30 in the above embodiment correspond to the notification method in the present disclosure, and in particular, the processes of S110 and S120 correspond to the detection unit in the present disclosure, S130 and S140. Processing corresponds to the notification unit in the present disclosure.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Emergency Alarm Devices (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Alarm Systems (AREA)
PCT/JP2018/026555 2017-07-25 2018-07-13 通知方法、通知装置、および発音装置 Ceased WO2019021869A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112018003814.9T DE112018003814T5 (de) 2017-07-25 2018-07-13 Benachrichtigungsverfahren, Benachrichtigungsvorrichtung und Geräuscherzeugnungsvorrichtung
CN201880049022.3A CN110998680A (zh) 2017-07-25 2018-07-13 通知方法、通知装置以及发声装置
US16/749,364 US20200160673A1 (en) 2017-07-25 2020-01-22 Notification method, notification device, and sound generation device

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JP2017143671A JP2019028498A (ja) 2017-07-25 2017-07-25 通知方法、通知装置、および発音装置
JP2017-143671 2017-07-25

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JP (1) JP2019028498A (https=)
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