WO2015125228A1 - Wind-noise recording system and wind-noise recording method - Google Patents

Wind-noise recording system and wind-noise recording method Download PDF

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Publication number
WO2015125228A1
WO2015125228A1 PCT/JP2014/053886 JP2014053886W WO2015125228A1 WO 2015125228 A1 WO2015125228 A1 WO 2015125228A1 JP 2014053886 W JP2014053886 W JP 2014053886W WO 2015125228 A1 WO2015125228 A1 WO 2015125228A1
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Prior art keywords
wind
wind noise
recording
time
noise
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PCT/JP2014/053886
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French (fr)
Japanese (ja)
Inventor
和文 橋本
信二 馬庭
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中国電力株式会社
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Priority to PCT/JP2014/053886 priority Critical patent/WO2015125228A1/en
Priority to JP2015513540A priority patent/JP5746453B1/en
Publication of WO2015125228A1 publication Critical patent/WO2015125228A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid

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  • the present invention relates to a wind noise recording system and a wind noise recording method for recording, for example, wind noise generated from a power transmission line as voice data.
  • the transmission line may vibrate due to the breeze and abnormal noise may be generated.
  • Such abnormal noise caused by slight wind vibration is a kind of wind noise because it makes people living around the transmission line uncomfortable.
  • the worker when confirming the fact that wind noise can be heard in the past or ascertaining what kind of sound the wind noise is, the worker asks the person who reported that the wind noise can be heard, for example.
  • a place where wind noise can be heard is specified, the place is visited, an IC recorder is placed at the place, and ambient sounds are recorded by the IC recorder.
  • a directional microphone is attached to the IC recorder, and the microphone is directed toward the power transmission line. Thereby, when the wind noise due to the slight wind noise is actually heard, the wind noise can be recorded.
  • Patent Document 1 describes a wind noise unmanned observation device that can perform wind noise measurement unattended.
  • the recording time can be shortened to some extent if the recording operation is performed only during a period when some sound that can be heard by human ears is sounding.
  • various sounds such as a driving sound of a car, a human life sound, an animal sound, a rain sound. As a result, such various sounds are recorded, and the recording time is not sufficiently shortened.
  • the recording time can be shortened by specifying the frequency of wind noise in advance and performing the recording operation only when the sound of that frequency arrives.
  • the frequency of wind noise due to slight wind vibration varies depending on the tower height, span length, electric wire tension, and the like. For this reason, it is difficult to specify in advance the frequency of wind noise due to slight wind vibration.
  • the wind is blowing while the wind noise is heard. Therefore, if it is detected that the wind is blowing and the recording operation is performed only while the wind is blowing, it seems that the recording time can be shortened.
  • the wind noise caused by slight wind vibration when the wind noise is heard, the wind is not always blowing to the place where the wind noise can be heard. That is, the place where wind noise due to slight wind vibration is generated is often separated from the place where the wind noise can be heard.
  • the place where the wind noise due to the slight wind vibration is generated is a position where the electric wire is present, for example, near the top of the steel tower.
  • the place where the wind noise due to the slight wind vibration can be heard may be a place far away from the steel tower.
  • the wind noise unmanned observation device described in Patent Document 1 has a function of recording data when the wind speed around the observation device exceeds a certain level.
  • wind noise may arrive even when the wind speed around the observation device is not above a certain level, so that the function of this wind noise unmanned observation device cannot be used.
  • An object of the present invention is to provide a wind noise recording system and a wind noise recording method capable of shortening the recording time while reliably recording wind noise. It is to provide.
  • a first wind noise recording system is a wind noise recording system for recording wind noise, and is disposed in the vicinity of a wind noise generation source, and the wind speed in the vicinity of the generation source is A wind monitoring device that transmits a start signal after a time when the wind speed is equal to or higher than a predetermined reference wind speed, and then transmits a stop signal after a time when the wind speed in the vicinity of the generation source becomes less than the reference wind speed; A recording device that is arranged at a remote location and records only a sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level from when the start signal is received until the stop signal is received. It is characterized by being.
  • the wind monitoring device receives wind to generate power, and the wind speed of the wind is equal to or higher than the reference wind speed.
  • the wind turbine generator whose output voltage is equal to or higher than a predetermined reference voltage and the output voltage of the wind turbine generator are supplied, and when the state where the output voltage is equal to or higher than the reference voltage continues for a predetermined time, the start signal is And a signal output device that outputs the stop signal after the time when the output voltage becomes less than the reference voltage, and a transmitter that transmits the start signal and the stop signal, respectively.
  • the signal output device and the transmitter have the output voltage of the wind turbine generator as a power supply voltage.
  • the operation limit voltage of the transmitter is smaller than the operation limit voltage of the signal output device.
  • the recording device receives each of the start signal and the stop signal.
  • a recorder that records only a sound having a sound pressure level equal to or higher than the reference sound pressure level, and starts operation of the recorder in response to reception of the start signal by the receiver, and the stop by the receiver
  • a control unit that stops the operation of the recorder in response to reception of the signal.
  • a fifth wind noise recording system is the above-described fourth wind noise recording system according to the present invention, further comprising a time storage unit that stores time data indicating a time at which the recorder starts operation. It is characterized by.
  • a sixth wind noise recording system is the wind noise recording system according to any one of the first to fifth aspects of the present invention described above, wherein the generation source is an electric wire installed on a steel tower or a utility pole. To do.
  • the wind noise recording method of the present invention is a wind noise recording method for recording wind noise, wherein a wind monitoring device is disposed in the vicinity of a wind noise generation source, A start signal is transmitted after the time when the wind speed in the vicinity of the generation source is equal to or higher than a predetermined reference wind speed, and then a stop signal is transmitted after the time when the wind speed in the vicinity of the generation source is less than the reference wind speed, A recording device is disposed at a location distant from the generation source, and the recording device receives the start signal and the stop signal transmitted from the wind monitoring device, respectively, and the stop signal is received after the start signal is received. Until then, only sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level is recorded.
  • the recording time can be shortened while reliably recording the wind noise.
  • FIG. 1 shows a wind noise recording system according to an embodiment of the present invention.
  • a wind noise recording system 1 according to an embodiment of the present invention is a system that records wind noise emitted from a power transmission line 2 or the like as audio data.
  • the wind noise recording system 1 can record wind noise caused by slight wind vibration of the power transmission line 2 and the like.
  • the wind noise recording system 1 includes a wind monitoring device 11 and a recording device 21.
  • the wind monitoring device 11 is disposed in the vicinity of the power transmission line 2 that is a source of wind noise. Since the power transmission line 2 is often installed at a high place, the wind monitoring device 11 is also often arranged at a high place. For example, the wind monitoring apparatus 11 is installed in the steel tower 3 as shown in FIG.
  • the wind monitoring device 11 wirelessly transmits a start signal for starting the operation of the recording device 21 after the time when the wind speed in the vicinity of the power transmission line 2 becomes equal to or higher than a predetermined reference wind speed. It is a device that wirelessly transmits a stop signal for stopping the operation of the recording device 21 after the time when the wind speed is lower.
  • the recording device 21 is disposed at a location away from the power transmission line 2 that is a source of wind noise.
  • the recording device 21 is arranged at a place where wind noise can be heard (a place where a person around the power transmission line 2 has reported as a place where wind noise can be heard).
  • a place where wind noise due to slight wind vibration can be heard may be a place where the wind noise is generated, that is, a place far away from the transmission line 2.
  • the recording device 21 is arranged at a location far away from the power transmission line 2.
  • the sound recording device 21 has a sound pressure level equal to or higher than a predetermined reference sound pressure level from when the start signal transmitted from the wind monitoring device 11 is received until the stop signal transmitted from the wind monitoring device 11 is received. It is a device that records only the sound having.
  • FIG. 2 shows the configuration of the wind monitoring device 11.
  • the wind monitoring device 11 includes a wind turbine generator 12, a timer 13 as a signal output device, a transmitter 14, a regulator 15, and a capacitor 16.
  • the windmill generator 12 is a device that generates power by receiving wind and rotating the blades 12A.
  • the output voltage becomes equal to or higher than the generator rated voltage as the predetermined reference voltage.
  • the reference wind speed is, for example, 2.5 m / sec.
  • the generator rated voltage is, for example, DC 14.5V.
  • the output voltage of the wind turbine generator 12 is supplied to the timer 13 as the power supply voltage of the timer 13.
  • the output voltage of the wind turbine generator 12 is supplied to the transmitter 14 via the regulator 15 as the power supply voltage of the transmitter 14.
  • the regulator 15 reduces the value of the output voltage of the wind turbine generator 12 to an appropriate value (for example, 3.3 V) as the power supply voltage of the transmitter 14.
  • the output voltage of the wind turbine generator 12 is supplied to the capacitor 16 and stored in the capacitor 16.
  • the wind turbine generator 12 has both a function as a power source of the wind monitoring device 11 and a function of detecting the presence or absence of wind at a reference wind speed or higher.
  • the timer 13 has a contact and b contact, and performs a time limit operation.
  • the timer 13 starts operation at the same time as starting operation, and closes the contact a when a predetermined time T has elapsed, Open the contact.
  • a start signal is output from the timer 13 to the transmitter 14.
  • the timer 13 opens the a contact, closes the b contact, and then stops operation when the output voltage from the wind turbine generator 12 becomes less than the timer holding limit voltage lower than the generator rated voltage.
  • a stop signal is output from the timer 13 to the transmitter 14.
  • the timer holding limit voltage corresponds to the operation limit voltage of the timer 13.
  • the transmitter 14 includes a wireless transmission circuit and an antenna 14A, and transmits a start signal and a stop signal output from the timer 13 to the recording device 21, respectively.
  • the transmitter 14 is supplied with an output voltage equal to or higher than the generator rated voltage from the wind turbine generator 12 to the regulator 15, whereby a voltage higher than the operation limit voltage of the transmitter 14 is input from the regulator 15 to the transmitter 14. Start operation. Further, the transmitter 14 has an output voltage from the wind turbine generator 12 lower than the generator rated voltage and further lower than the timer holding limit voltage. As a result, the voltage input from the regulator 15 to the transmitter 14 is When the transmitter 14 becomes less than the operating limit voltage, the operation is stopped.
  • the wind turbine generator 12 includes a water-resistant housing, and the timer 13, the transmitter 14, the regulator 15 and the capacitor 16 are accommodated in a water-resistant case.
  • the wind monitoring device 11 is small as a whole and lightweight.
  • FIG. 3 shows the configuration of the recording device 21.
  • the recording device 21 includes a receiver 22, a recorder I / F (recorder interface) 23 as a control unit, an IC recorder 24 as a recorder, a microphone 25, a parabolic sound collector 26, a regulator 27, A solar battery panel 28, a lead storage battery 29, and a charge / discharge controller 30 are provided.
  • the receiver 22 includes an antenna 22A and a wireless reception circuit, and receives a start signal and a stop signal transmitted from the transmitter 14 of the wind monitoring device 11, respectively.
  • the receiver 22 outputs the received start signal and stop signal to the recorder I / F 23, respectively.
  • the recorder I / F 23 includes a signal processing circuit. When a start signal is input from the receiver 22, the recorder I / F 23 outputs an ON signal that is a pulse signal for starting the operation of the IC recorder 24 to the IC recorder 24. Further, when a stop signal is input from the receiver 22, the recorder I / F 23 outputs an OFF signal, which is a pulse signal for stopping the operation of the IC recorder 24, to the IC recorder 24.
  • the IC recorder 24 is a device that records only sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level.
  • the IC recorder 24 includes an audio input terminal, an analog-digital conversion circuit, for example, a storage element including a flash memory, a clock, and the like.
  • the IC recorder 24 includes a circuit that controls these components and selects or extracts a sound having a sound pressure level equal to or higher than a reference sound pressure level.
  • a microphone 25 is connected to the audio input terminal of the IC recorder 24.
  • the IC recorder 24 converts the sound collected by the parabolic sound collector 26 and acquired by the microphone 25 into digital sound data, and the sound data has a sound pressure level equal to or higher than the reference sound pressure level.
  • Only corresponding audio data is selected or extracted and stored in the storage element.
  • the processing or operation of recording only sound having a sound pressure level equal to or higher than the reference sound pressure level in the IC recorder 24 is realized by, for example, a VOR (Voice Operated Recording) function provided in an IC recorder manufactured by Sony Corporation. can do.
  • the IC recorder 24 has a control terminal.
  • a recorder I / F 23 is connected to this control terminal, and an ON signal and an OFF signal output from the recorder I / F 23 are respectively input.
  • the ON signal is input, the IC recorder 24 starts operation.
  • the IC recorder 24 stores the sound data of the input sound as a storage element. The operation to be stored in memory, that is, the recording operation is performed.
  • the OFF signal is input, the IC recorder 24 stops operating.
  • the IC recorder 24 has a function of storing time data (time stamp) indicating a time at which the IC recorder 24 starts operation in a storage element (a function as a time storage unit).
  • the recording device 21 can supply power continuously to the receiver 22 and the IC recorder 24 by the solar cell panel 28, the lead storage battery 29, and the charge / discharge controller 30 by itself.
  • the charge / discharge controller 30 can generate sufficient power by the solar panel 28 such as during a sunny day
  • the charge / discharge controller 30 converts the power generated by the solar panel 28 into the receiver 22, the IC recorder 24, and the lead storage battery 29.
  • the charge / discharge controller 30 supplies the power stored in the lead storage battery 29 to the receiver 22 and the IC recorder 24 when sufficient power cannot be generated by the solar battery panel 28 such as at night.
  • the regulator 27 supplies the power supply voltage (for example, 12V) output from the solar battery panel 28 or the lead storage battery 29 to the IC recorder 24, the value of the power supply voltage is suitable for operating the IC recorder 24. Decrease to a value (eg 3.3V).
  • Wind noise recording processing 4 and 5 show the wind noise recording process in the wind noise recording system 1.
  • the wind noise recording process will be described with reference to the flowchart of FIG. 5 focusing on the timing chart of FIG.
  • the wind turbine generator 12 when wind starts to blow near the transmission line 2 that is a source of wind noise, the wind turbine generator 12 starts generating power by receiving the wind, and the output voltage of the wind turbine generator 12 increases.
  • the output voltage (power supply voltage) of the wind turbine generator 12 reaches the generator rated voltage.
  • the transmitter 14 and the timer 13 start operating, and the timer 13 starts measuring time.
  • the timer 13 is set so that the contact a is closed and the contact b is opened when a predetermined time T (for example, 3 minutes) elapses from the start of time measurement.
  • a predetermined time T for example, 3 minutes
  • the contact a of the timer 13 is closed and the contact b is opened.
  • the timing operation of the timer 13 is reset at that time.
  • step 1 If the wind speed in the vicinity of the transmission line 2 continues to be equal to or higher than the reference wind speed after the timer 13 starts measuring time until the predetermined time T elapses (step 1: YES in FIG. 5), the timer 13 closes the a contact and opens the b contact. Thereby, a start signal is output from the timer 13 to the transmitter 14, and this start signal is wirelessly transmitted from the transmitter 14 to the recording device 21 (time t2 in FIG. 4, step S2 in FIG. 5).
  • the IC recorder 24 receives the ON signal and starts operating in response thereto. At this time, the IC recorder 24 stores time data (time stamp) indicating the current time in a storage element of the IC recorder 24 (step S4 in FIG. 5).
  • the IC recorder 24 performs a process of recording the sound while the sound pressure level of the sound around the place where the recording device 21 is installed is equal to or higher than the reference sound pressure level (step S5 in FIG. 5). For example, between time t3 and time t4 in FIG. 4 and from time t5 to time t6, the sound pressure level of the sound around the place where the recording device 21 is installed is equal to or higher than the reference sound pressure level. Therefore, the IC recorder 24 records the sound between them. On the other hand, during the period from time t2 to time t3, from time t4 to time t5, and from time t6 to t7 in FIG. 4, the sound pressure level of the sound around the place where the recording device 21 is installed. Is less than the reference sound pressure level, the IC recorder 24 does not record the sound between them.
  • the wind monitoring device 11 maintains the state immediately after the time point t2 in FIG. 4 while the wind speed in the vicinity of the transmission line 2 is equal to or higher than the reference wind speed. Further, the wind monitoring device 11 has a wind speed in the vicinity of the power transmission line 2 that is less than the reference wind speed, but when this is a short time, the action of the capacitor 16 provided in the wind monitoring device 11 causes the wind monitoring device 11 immediately after the time t2. Maintain state.
  • the output voltage of the wind turbine generator 12 falls below the generator rated voltage and further becomes less than the timer holding limit voltage (time point in FIG. 4). 7).
  • the voltage input from the regulator 15 to the transmitter 14 when the output voltage of the wind turbine generator 12 is supplied to the regulator 15 is equal to or higher than the operation limit voltage of the transmitter 14.
  • the a contact is opened and the b contact is closed in the timer 13.
  • a stop signal is output from the timer 13 to the transmitter 14, and this stop signal is wirelessly transmitted from the transmitter 14 to the recording device 21 (step S7 in FIG. 5).
  • the timer 13 stops operation after closing the b contact.
  • the IC recorder 24 receives the OFF signal, and in response to this, the audio data recorded from the time point t3 to the time point t4 and from the time point t5 to the time point t6 is stored in the storage element of the IC recorder 24 as an audio file.
  • the audio data recorded from time t3 to time t4 and the audio data recorded from time t5 to time t6 are arranged consecutively in order of recording time (with intervals). Create and store the shape as one audio file. Thereafter, the IC recorder 24 stops operating (step S9 in FIG. 5).
  • the wind speed in the vicinity of the transmission line 2 further decreases, and as a result, in the wind monitoring device 11, when the voltage input from the regulator 15 to the transmitter 14 becomes less than the operating limit voltage of the transmitter 14 (in FIG. 4).
  • the transmitter 14 stops operating.
  • the wind monitoring device 11 and the recording device 21 are separate devices, and the wind monitoring device 11 is in the vicinity of the power transmission line 2 that is a source of wind noise.
  • the recording device 21 is arranged in a place where wind noise can actually be heard, and a start signal and a stop signal are transmitted from the wind monitoring device 11 to the recording device 21, respectively.
  • wind noise is generated by wind blowing in the vicinity of the power transmission line 2, such as wind noise due to slight wind vibration of the power transmission line 2, and the wind noise is separated from the power transmission line 2.
  • the noise reaches the location as an unpleasant noise, while the wind noise is occurring, even if there is no wind blowing in the location where the wind noise reaches, record the wind noise and reduce the recording time. Can be shortened. That is, while the wind speed in the vicinity of the transmission line 2 is equal to or higher than the reference wind speed and wind noise is generated or may occur, the IC recorder 24 is operated in a place where it is reported that wind noise reaches, Since only the sound above the reference sound pressure level is recorded, wind noise can be recorded reliably.
  • the IC recorder 24 does not operate in a place where it is reported that wind noise arrives, and no recording operation is performed. Because there is no, recording time can be shortened.
  • the recording time is shortened and the probability that the recorded sound data includes wind noise is increased, the recorded sound is heard and the wind sound is detected from the sound.
  • the work of searching for noise can be shortened, and the burden on workers can be reduced.
  • the start signal and the stop signal can be wirelessly communicated between the wind monitoring device 11 and the recording device 21 and the above-described recording operation control can be performed, the generation of wind noise can be performed. Easy recording of wind noise even if the distance between the power transmission line 2 and the place where wind noise can be heard is long, or there is a valley between these places, making it difficult to come and go between the two places. Can be realized.
  • the wind monitoring device 11 since the wind monitoring device 11 is operated by the power generation of the wind turbine generator 12, it can be operated even in a place where it is difficult to obtain a power supply for operating a low-power device such as a power transmission tower in a mountainous area.
  • the recording device 21 is an independent device different from the wind turbine generator 12, the recording device 21 is arranged in a place where the wind noise can be actually instructed by a person who reports that the wind noise can be heard. Can record the sound around the place. This increases the certainty that wind noise can be captured.
  • the wind monitoring device 11 may have to be placed at a place that is difficult to reach, such as the top of the steel tower 3 in the mountainous area, while the recording device 21 can be placed on a flat ground far from the steel tower 3. Thereby, the voice data recorded by the IC recorder 24 can be easily collected, and the recording device 21 can be easily maintained.
  • the recording device 21 stores time data (time stamp) indicating the start time of operation in the storage element, it is possible to easily specify the time when wind noise was heard based on this time data. .
  • the operation limit voltage of the transmitter 14 is set lower than the timer holding limit voltage of the timer 13 (see FIG. 4), the transmitter 14 is stopped from the timer 13 before the operation is stopped. Therefore, the stop signal can be reliably transmitted to the recording device 21 by the transmitter 14.
  • the wind noise recording system 1 records the wind noise due to the slight wind vibration of the transmission line 2 as an example, but the present invention is not limited to this.
  • the wind noise recording system of the present invention can also record wind noise caused by causes other than slight wind vibration such as wind noise.
  • the wind noise recording system of the present invention can also record wind noise generated from electric wires other than power transmission lines or wind noise sources other than electric wires.
  • Wind noise recording system 1 Wind noise recording system 2 Transmission line (source) 3 Steel Tower 11 Wind Monitoring Device 12 Windmill Generator 12A Blade 13 Timer (Signal Output Device) 14 Transmitter 14A Antenna 15 Regulator 16 Capacitor 21 Recording Device 22 Receiver 22A Antenna 23 Recorder I / F (Control Unit) 24 IC recorder (recorder) 25 Macrophone 26 Parabolic Sound Collector 27 Regulator 28 Solar Panel 29 Lead Acid Battery 30 Charge / Discharge Controller

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  • General Physics & Mathematics (AREA)
  • Wind Motors (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

[Problem] To reduce the length of time for which wind noise is recorded while still recording said wind noise reliably. [Solution] A wind-noise recording system (1) that can record wind noise due to light-wind-induced vibration of a power transmission line (2) or the like. Said wind-noise recording system (1) comprises a wind monitoring device (11) and a separate recording device (21). The wind monitoring device (11) is placed near a power transmission line (2) that is causing wind noise. When or after the wind speed near said power transmission line (2) reaches or exceeds a wind-speed threshold, the wind monitoring device (11) wirelessly transmits a start signal, and when or after said wind speed subsequently falls below the wind-speed threshold, the wind monitoring device (11) wirelessly transmits a stop signal. The recording device (21) is placed at a distance from the power transmission line (2) that is causing the abovementioned wind noise, and from the point in time at which the start signal transmitted by the wind monitoring device (11) is received until the point in time at which the stop signal is received, the recording device (21) records only sound having a sound pressure level that is greater than or equal to a sound-pressure-level threshold.

Description

風騒音記録システムおよび風騒音記録方法Wind noise recording system and wind noise recording method
　本発明は、例えば送電線等から発せられる風騒音を音声データとして記録する風騒音記録システムおよび風騒音記録方法に関する。 The present invention relates to a wind noise recording system and a wind noise recording method for recording, for example, wind noise generated from a power transmission line as voice data.
　微風により送電線が振動し、異音が発生することがある。このような微風振動による異音は、送電線の周囲で生活する人々を不快にすることから、風騒音の一種である。 ∙ The transmission line may vibrate due to the breeze and abnormal noise may be generated. Such abnormal noise caused by slight wind vibration is a kind of wind noise because it makes people living around the transmission line uncomfortable.
　電力会社の作業員は、送電線の周囲で生活する者から風騒音が聞こえる旨の報告を受けた場合、風騒音が聞こえる事実を確認し、風騒音がどのような音であるのかを把握し、風騒音の原因である送電線を探し出し、その送電線の固有振動数を変えるための措置等を施し、風騒音が発生しないようにする。 When an operator of an electric power company receives a report that wind noise can be heard from a person living around the transmission line, confirm the fact that wind noise can be heard and understand what the wind noise is. Find the power transmission line that causes the wind noise and take measures to change the natural frequency of the power transmission line so that the wind noise is not generated.
　このような作業において、従来、風騒音が聞こえる事実の確認、または風騒音がどのような音であるかの把握を行うに当たり、作業員は、例えば風騒音が聞こえる旨の報告をした者に問うなどして風騒音が聞こえる場所を特定し、その場所に行き、その場所にＩＣレコーダを置き、ＩＣレコーダにより周囲の音を録音する。なお、ＩＣレコーダには指向性マイクロフォンを取り付け、当該マイクロフォンを送電線の方に向ける。これにより、微風騒音による風騒音が実際に聞こえる場合には、当該風騒音を録音することができる。 In such work, when confirming the fact that wind noise can be heard in the past or ascertaining what kind of sound the wind noise is, the worker asks the person who reported that the wind noise can be heard, for example. Thus, a place where wind noise can be heard is specified, the place is visited, an IC recorder is placed at the place, and ambient sounds are recorded by the IC recorder. Note that a directional microphone is attached to the IC recorder, and the microphone is directed toward the power transmission line. Thereby, when the wind noise due to the slight wind noise is actually heard, the wind noise can be recorded.
　また、下記の特許文献１には風騒音の測定を無人で行うことができる風騒音無人観測器が記載されている。 Also, Patent Document 1 below describes a wind noise unmanned observation device that can perform wind noise measurement unattended.
実開昭５９ー１７６９３６号公報Japanese Utility Model Publication No.59-176936
　ところで、上述した作業において、風騒音が聞こえる事実を確認し、または風騒音がどのような音であるかを把握するためには、作業員はＩＣレコーダで録音した音声を聞き、その音声の中から風騒音を探し出さなければならない。これを達成するために、作業員は、長時間に及ぶ音声を、風騒音を聞き逃すことのないよう注意を払いながら聞き続けなければならない。それゆえ、この作業には、作業が長時間に及び、作業員の負担が大きいという問題がある。 By the way, in order to confirm the fact that wind noise can be heard in the above-mentioned work or to understand what kind of sound the wind noise is, the worker listens to the sound recorded by the IC recorder and includes the sound. Must find out wind noise from. To achieve this, workers must continue to listen for long periods of time, paying attention not to miss wind noise. Therefore, this work has a problem that the work takes a long time and the burden on the worker is large.
　この問題を解決するためには、風騒音以外の音をできる限り録音しないようにして、録音時間を短くすればよい。しかしながら、これは次に述べる通り容易でない。 In order to solve this problem, recording time should be shortened by recording as little sound as possible other than wind noise. However, this is not easy as described below.
　例えば、人間が耳で聞き取ることのできる何らかの音が鳴っている期間だけ録音動作を行うようにすれば、録音時間をある程度短くすることができる。しかし、ＩＣレコーダが置かれた場所の周囲には、自動車の走行音、人間の生活音、動物の鳴き声、降雨の音など様々な音が存在している。この結果、このような様々な音が録音されてしまい、録音時間が十分に短くならない。 For example, the recording time can be shortened to some extent if the recording operation is performed only during a period when some sound that can be heard by human ears is sounding. However, around the place where the IC recorder is placed, there are various sounds such as a driving sound of a car, a human life sound, an animal sound, a rain sound. As a result, such various sounds are recorded, and the recording time is not sufficiently shortened.
　また、風騒音の周波数を事前に特定し、その周波数の音が届いたときのみ録音動作を行うようにすれば、録音時間を短くすることができる。しかし、微風振動による風騒音の周波数は、鉄塔高、径間長、電線の張力等により変化する。このため、微風振動による風騒音の周波数を事前に特定することは困難である。 Also, the recording time can be shortened by specifying the frequency of wind noise in advance and performing the recording operation only when the sound of that frequency arrives. However, the frequency of wind noise due to slight wind vibration varies depending on the tower height, span length, electric wire tension, and the like. For this reason, it is difficult to specify in advance the frequency of wind noise due to slight wind vibration.
　また、風騒音が聞こえる間は風が吹いていると考えられる。そこで、風が吹いていることを検出し、風が吹いている間のみ録音動作を行うようにすれば、録音時間を短くすることができるとも思える。ところが、微風振動による風騒音の場合、風騒音が聞こえるときに、その風騒音が聞こえる場所に風が吹いているとは限らない。すなわち、微風振動による風騒音が発生する場所と、この風騒音が聞こえる場所とは離れていることが多い。微風振動による風騒音が発生する場所は電線がある位置であり、例えば鉄塔の頂部付近である。これに対し、微風振動による風騒音が聞こえる場所はその鉄塔からかなり離れた場所であることがある。この場合、風騒音が発生している場所に風が吹いていても、風騒音が聞こえる場所には風が吹いていない場合がある。それゆえ、この方法では、録音時間は短くなるとしても、風騒音がＩＣレコーダに届いていたにもかかわらず、それが録音されないことがあり得る。 Also, it is considered that the wind is blowing while the wind noise is heard. Therefore, if it is detected that the wind is blowing and the recording operation is performed only while the wind is blowing, it seems that the recording time can be shortened. However, in the case of wind noise caused by slight wind vibration, when the wind noise is heard, the wind is not always blowing to the place where the wind noise can be heard. That is, the place where wind noise due to slight wind vibration is generated is often separated from the place where the wind noise can be heard. The place where the wind noise due to the slight wind vibration is generated is a position where the electric wire is present, for example, near the top of the steel tower. On the other hand, the place where the wind noise due to the slight wind vibration can be heard may be a place far away from the steel tower. In this case, even if the wind is blowing in the place where the wind noise is generated, the wind may not be blowing in the place where the wind noise can be heard. Therefore, in this method, even if the recording time is shortened, it may not be recorded even though the wind noise has reached the IC recorder.
　また、上記特許文献１に記載された風騒音無人観測器は、観測器周囲の風速が一定以上となった場合にデータ記録を行う機能を有している。しかし、上述したように、観測器周囲の風速が一定以上でない間にも風騒音が届くことがあり得るため、この風騒音無人観測器の当該機能は利用することができない。 Also, the wind noise unmanned observation device described in Patent Document 1 has a function of recording data when the wind speed around the observation device exceeds a certain level. However, as described above, wind noise may arrive even when the wind speed around the observation device is not above a certain level, so that the function of this wind noise unmanned observation device cannot be used.
　本発明は例えば上述したような問題に鑑みなされたものであり、本発明の課題は、風騒音を確実に録音しつつ、録音時間を短くすることができる風騒音記録システムおよび風騒音記録方法を提供することにある。 The present invention has been made in view of the above-described problems, for example. An object of the present invention is to provide a wind noise recording system and a wind noise recording method capable of shortening the recording time while reliably recording wind noise. It is to provide.
　上記課題を解決するために、本発明の第１の風騒音記録システムは、風騒音を記録する風騒音記録システムであって、風騒音の発生源近傍に配置され、前記発生源近傍の風速が所定の基準風速以上となった時点以降に開始信号を送信し、その後、前記発生源近傍の風速が前記基準風速未満となった時点以降に停止信号を送信する風監視装置と、前記発生源から離れた場所に配置され、前記開始信号が受信されてから前記停止信号が受信されるまでの間、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音する録音装置とを備えていることを特徴とする。 In order to solve the above problems, a first wind noise recording system according to the present invention is a wind noise recording system for recording wind noise, and is disposed in the vicinity of a wind noise generation source, and the wind speed in the vicinity of the generation source is A wind monitoring device that transmits a start signal after a time when the wind speed is equal to or higher than a predetermined reference wind speed, and then transmits a stop signal after a time when the wind speed in the vicinity of the generation source becomes less than the reference wind speed; A recording device that is arranged at a remote location and records only a sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level from when the start signal is received until the stop signal is received. It is characterized by being.
　本発明の第２の風騒音記録システムは、上述した本発明の第１の風騒音記録システムにおいて、前記風監視装置は、風を受けて発電し、当該風の風速が前記基準風速以上である間、出力電圧が所定の基準電圧以上となる風車発電機と、前記風車発電機の出力電圧が供給され、前記出力電圧が前記基準電圧以上である状態が所定時間継続したときに前記開始信号を出力し、その後、前記出力電圧が前記基準電圧未満となった時点以降に前記停止信号を出力する信号出力装置と、前記開始信号および前記停止信号をそれぞれ送信する送信機とを備えていることを特徴とする。 According to a second wind noise recording system of the present invention, in the first wind noise recording system of the present invention described above, the wind monitoring device receives wind to generate power, and the wind speed of the wind is equal to or higher than the reference wind speed. The wind turbine generator whose output voltage is equal to or higher than a predetermined reference voltage and the output voltage of the wind turbine generator are supplied, and when the state where the output voltage is equal to or higher than the reference voltage continues for a predetermined time, the start signal is And a signal output device that outputs the stop signal after the time when the output voltage becomes less than the reference voltage, and a transmitter that transmits the start signal and the stop signal, respectively. Features.
　本発明の第３の風騒音記録システムは、上述した本発明の第１または第２の風騒音記録システムにおいて、前記信号出力装置および前記送信機は、前記風車発電機の出力電圧が電源電圧として供給されることにより動作し、前記送信機の動作限界電圧が前記信号出力装置の動作限界電圧よりも小さいことを特徴とする。 According to a third wind noise recording system of the present invention, in the first or second wind noise recording system of the present invention described above, the signal output device and the transmitter have the output voltage of the wind turbine generator as a power supply voltage. The operation limit voltage of the transmitter is smaller than the operation limit voltage of the signal output device.
　本発明の第４の風騒音記録システムは、上述した本発明の第１ないし第３のいずれかの風騒音記録システムにおいて、前記録音装置は、前記開始信号および前記停止信号をそれぞれ受信する受信機と、前記基準音圧レベル以上の音圧レベルを有する音のみを録音する録音機と、前記受信機による前記開始信号の受信に応じて前記録音機の稼働を開始させ、前記受信機による前記停止信号の受信に応じて前記録音機の稼働を停止させる制御部とを備えていることを特徴とする。 According to a fourth wind noise recording system of the present invention, in any one of the first to third wind noise recording systems of the present invention described above, the recording device receives each of the start signal and the stop signal. A recorder that records only a sound having a sound pressure level equal to or higher than the reference sound pressure level, and starts operation of the recorder in response to reception of the start signal by the receiver, and the stop by the receiver And a control unit that stops the operation of the recorder in response to reception of the signal.
　本発明の第５の風騒音記録システムは、上述した本発明の第４の風騒音記録システムにおいて、前記録音機が稼働を開始した時刻を示す時刻データを記憶する時刻記憶部を備えていることを特徴とする。 A fifth wind noise recording system according to the present invention is the above-described fourth wind noise recording system according to the present invention, further comprising a time storage unit that stores time data indicating a time at which the recorder starts operation. It is characterized by.
　本発明の第６の風騒音記録システムは、上述した本発明の第１ないし第５のいずれかの風騒音記録システムにおいて、前記発生源は鉄塔または電柱に架設された電線であることを特徴とする。 A sixth wind noise recording system according to the present invention is the wind noise recording system according to any one of the first to fifth aspects of the present invention described above, wherein the generation source is an electric wire installed on a steel tower or a utility pole. To do.
　上記課題を解決するために、本発明の風騒音記録方法は、風騒音を記録する風騒音記録方法であって、風騒音の発生源近傍に風監視装置を配置し、当該風監視装置により、前記発生源近傍の風速が所定の基準風速以上となった時点以降に開始信号を送信し、その後、前記発生源近傍の風速が前記基準風速未満となった時点以降に停止信号を送信し、前記発生源から離れた場所に録音装置を配置し、当該録音装置により、前記風監視装置から送信された開始信号および停止信号をそれぞれ受信し、前記開始信号が受信されてから前記停止信号が受信されるまでの間、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音することを特徴とする。 In order to solve the above problems, the wind noise recording method of the present invention is a wind noise recording method for recording wind noise, wherein a wind monitoring device is disposed in the vicinity of a wind noise generation source, A start signal is transmitted after the time when the wind speed in the vicinity of the generation source is equal to or higher than a predetermined reference wind speed, and then a stop signal is transmitted after the time when the wind speed in the vicinity of the generation source is less than the reference wind speed, A recording device is disposed at a location distant from the generation source, and the recording device receives the start signal and the stop signal transmitted from the wind monitoring device, respectively, and the stop signal is received after the start signal is received. Until then, only sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level is recorded.
　本発明によれば、風騒音を確実に録音しつつ、録音時間を短くすることができる。 According to the present invention, the recording time can be shortened while reliably recording the wind noise.
本発明の実施形態による風騒音記録システムを示す説明図である。It is explanatory drawing which shows the wind noise recording system by embodiment of this invention. 本発明の実施形態による風騒音記録システムにおける風監視装置の構成を示すブロック図である。It is a block diagram which shows the structure of the wind monitoring apparatus in the wind noise recording system by embodiment of this invention. 本発明の実施形態による風騒音記録システムにおける録音装置の構成を示すブロック図である。It is a block diagram which shows the structure of the recording device in the wind noise recording system by embodiment of this invention. 本発明の実施形態による風騒音記録システムの動作を示すタイミングチャートである。It is a timing chart which shows operation | movement of the wind noise recording system by embodiment of this invention. 本発明の実施形態による風騒音記録システムの動作または風騒音記録方法を示すフローチャートである。It is a flowchart which shows the operation | movement of the wind noise recording system by the embodiment of this invention, or the wind noise recording method.
　以下、本発明の実施の形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　　（風騒音記録システム）
　図１は、本発明の実施の形態による風騒音記録システムを示している。図１において、本発明の実施形態による風騒音記録システム１は、送電線２等から発せられる風騒音を音声データとして記録するシステムである。風騒音記録システム１は、送電線２等の微風振動による風騒音を録音することができる。風騒音記録システム１は、風監視装置１１および録音装置２１を備えている。 (Wind noise recording system)
FIG. 1 shows a wind noise recording system according to an embodiment of the present invention. In FIG. 1, a wind noise recording system 1 according to an embodiment of the present invention is a system that records wind noise emitted from a power transmission line 2 or the like as audio data. The wind noise recording system 1 can record wind noise caused by slight wind vibration of the power transmission line 2 and the like. The wind noise recording system 1 includes a wind monitoring device 11 and a recording device 21.
　風監視装置１１は、風騒音の発生源である送電線２の近傍に配置されている。送電線２は高所に架設されている場合が多いので、風監視装置１１も高所に配置されることが多い。例えば、風監視装置１１は、図１に示すように、鉄塔３に設置されている。風監視装置１１は、送電線２近傍の風速が所定の基準風速以上となった時点以降に、録音装置２１の稼働を開始させる開始信号を無線送信し、その後、送電線２近傍の風速が基準風速未満となった時点以降に、録音装置２１の稼働を停止させる停止信号を無線送信する装置である。 The wind monitoring device 11 is disposed in the vicinity of the power transmission line 2 that is a source of wind noise. Since the power transmission line 2 is often installed at a high place, the wind monitoring device 11 is also often arranged at a high place. For example, the wind monitoring apparatus 11 is installed in the steel tower 3 as shown in FIG. The wind monitoring device 11 wirelessly transmits a start signal for starting the operation of the recording device 21 after the time when the wind speed in the vicinity of the power transmission line 2 becomes equal to or higher than a predetermined reference wind speed. It is a device that wirelessly transmits a stop signal for stopping the operation of the recording device 21 after the time when the wind speed is lower.
　録音装置２１は、図１に示すように、風騒音の発生源である送電線２から離れた場所に配置される。例えば、録音装置２１は、風騒音が聞こえる場所（風騒音が聞こえる場所として送電線２の周囲の者から報告があった場所）に配置される。微風振動による風騒音が聞こえる場所は、この風騒音が発生する場所、すなわち、送電線２から大きく離れた場所であることがある。この場合には、録音装置２１は、送電線２から大きく離れた場所に配置される。録音装置２１は、風監視装置１１から送信された開始信号が受信されてから、風監視装置１１から送信された停止信号が受信されるまでの間、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音する装置である。 As shown in FIG. 1, the recording device 21 is disposed at a location away from the power transmission line 2 that is a source of wind noise. For example, the recording device 21 is arranged at a place where wind noise can be heard (a place where a person around the power transmission line 2 has reported as a place where wind noise can be heard). A place where wind noise due to slight wind vibration can be heard may be a place where the wind noise is generated, that is, a place far away from the transmission line 2. In this case, the recording device 21 is arranged at a location far away from the power transmission line 2. The sound recording device 21 has a sound pressure level equal to or higher than a predetermined reference sound pressure level from when the start signal transmitted from the wind monitoring device 11 is received until the stop signal transmitted from the wind monitoring device 11 is received. It is a device that records only the sound having.
　　（風監視装置）
　図２は風監視装置１１の構成を示している。図２に示すように、風監視装置１１は、風車発電機１２、信号出力装置としてのタイマ１３、送信機１４、レギュレータ１５、およびキャパシタ１６を備えている。 (Wind monitoring device)
FIG. 2 shows the configuration of the wind monitoring device 11. As shown in FIG. 2, the wind monitoring device 11 includes a wind turbine generator 12, a timer 13 as a signal output device, a transmitter 14, a regulator 15, and a capacitor 16.
　風車発電機１２は、風を受けて羽根１２Ａを回転させることにより発電を行う装置である。風車発電機１２において、受けている風の風速が所定の基準風速以上となったとき、出力電圧が、所定の基準電圧としての発電機定格電圧以上となる。基準風速は例えば２．５ｍ／秒である。発電機定格電圧は例えば直流１４．５Ｖである。風車発電機１２の出力電圧はタイマ１３の電源電圧としてタイマ１３に供給される。また、風車発電機１２の出力電圧は送信機１４の電源電圧としてレギュレータ１５を介して送信機１４に供給される。レギュレータ１５は風車発電機１２の出力電圧の値を送信機１４の電源電圧として適切な値（例えば３．３Ｖ）に下げる。また、風車発電機１２の出力電圧はキャパシタ１６に供給され、キャパシタ１６に蓄積される。風車発電機１２は、風監視装置１１の電源としての機能と、基準風速以上の風の有無の検出する機能とを兼ね備えている。 The windmill generator 12 is a device that generates power by receiving wind and rotating the blades 12A. In the wind turbine generator 12, when the wind speed of the received wind becomes equal to or higher than a predetermined reference wind speed, the output voltage becomes equal to or higher than the generator rated voltage as the predetermined reference voltage. The reference wind speed is, for example, 2.5 m / sec. The generator rated voltage is, for example, DC 14.5V. The output voltage of the wind turbine generator 12 is supplied to the timer 13 as the power supply voltage of the timer 13. The output voltage of the wind turbine generator 12 is supplied to the transmitter 14 via the regulator 15 as the power supply voltage of the transmitter 14. The regulator 15 reduces the value of the output voltage of the wind turbine generator 12 to an appropriate value (for example, 3.3 V) as the power supply voltage of the transmitter 14. The output voltage of the wind turbine generator 12 is supplied to the capacitor 16 and stored in the capacitor 16. The wind turbine generator 12 has both a function as a power source of the wind monitoring device 11 and a function of detecting the presence or absence of wind at a reference wind speed or higher.
　タイマ１３はａ接点およびｂ接点を有し、限時動作を行う。タイマ１３は、風車発電機１２から発電機定格電圧以上の出力電圧（電源電圧）が入力されたとき、稼働を開始すると同時に計時を開始し、所定時間Ｔ経過した時点でａ接点を閉じ、ｂ接点を開く。ａ接点が閉じたとき、タイマ１３から送信機１４へ開始信号が出力される。また、タイマ１３は、風車発電機１２からの出力電圧が、発電機定格電圧よりも低いタイマ保持限界電圧未満となったときに、ａ接点を開き、ｂ接点を閉じ、その後、稼働を停止する。ｂ接点が閉じたとき、タイマ１３から送信機１４へ停止信号が出力される。なお、タイマ保持限界電圧は、タイマ１３の動作限界電圧に相当する。 The timer 13 has a contact and b contact, and performs a time limit operation. When the output voltage (power supply voltage) higher than the generator rated voltage is input from the wind turbine generator 12, the timer 13 starts operation at the same time as starting operation, and closes the contact a when a predetermined time T has elapsed, Open the contact. When the contact a is closed, a start signal is output from the timer 13 to the transmitter 14. The timer 13 opens the a contact, closes the b contact, and then stops operation when the output voltage from the wind turbine generator 12 becomes less than the timer holding limit voltage lower than the generator rated voltage. . When the contact b is closed, a stop signal is output from the timer 13 to the transmitter 14. The timer holding limit voltage corresponds to the operation limit voltage of the timer 13.
　送信機１４は、無線送信回路およびアンテナ１４Ａを備え、タイマ１３から出力された開始信号および停止信号をそれぞれ録音装置２１へ送信する。送信機１４は、風車発電機１２から発電機定格電圧以上の出力電圧がレギュレータ１５に供給され、これによりレギュレータ１５から送信機１４へ、当該送信機１４の動作限界電圧以上の電圧が入力されることにより稼働を開始する。また、送信機１４は、風車発電機１２からの出力電圧が発電機定格電圧よりも低く、さらにタイマ保持限界電圧よりも低くなり、その結果、レギュレータ１５から送信機１４に入力される電圧が、当該送信機１４の動作限界電圧未満となったときに、稼働を停止する。 The transmitter 14 includes a wireless transmission circuit and an antenna 14A, and transmits a start signal and a stop signal output from the timer 13 to the recording device 21, respectively. The transmitter 14 is supplied with an output voltage equal to or higher than the generator rated voltage from the wind turbine generator 12 to the regulator 15, whereby a voltage higher than the operation limit voltage of the transmitter 14 is input from the regulator 15 to the transmitter 14. Start operation. Further, the transmitter 14 has an output voltage from the wind turbine generator 12 lower than the generator rated voltage and further lower than the timer holding limit voltage. As a result, the voltage input from the regulator 15 to the transmitter 14 is When the transmitter 14 becomes less than the operating limit voltage, the operation is stopped.
　風監視装置１１において、風車発電機１２は耐水性を有するハウジングを備えており、また、タイマ１３、送信機１４、レギュレータ１５およびキャパシタ１６は、耐水性を有するケースに収容されている。風監視装置１１は、全体として小型であり、軽量である。 In the wind monitoring device 11, the wind turbine generator 12 includes a water-resistant housing, and the timer 13, the transmitter 14, the regulator 15 and the capacitor 16 are accommodated in a water-resistant case. The wind monitoring device 11 is small as a whole and lightweight.
　　（録音装置）
　図３は録音装置２１の構成を示している。図３に示すように、録音装置２１は、受信機２２、制御部としてのレコーダＩ／Ｆ（レコーダインターフェース）２３、録音機としてのＩＣレコーダ２４、マイクロフォン２５、パラボラ集音器２６、レギュレータ２７、太陽電池パネル２８、鉛蓄電池２９および充放電コントローラ３０を備えている。 (Recording device)
FIG. 3 shows the configuration of the recording device 21. As shown in FIG. 3, the recording device 21 includes a receiver 22, a recorder I / F (recorder interface) 23 as a control unit, an IC recorder 24 as a recorder, a microphone 25, a parabolic sound collector 26, a regulator 27, A solar battery panel 28, a lead storage battery 29, and a charge / discharge controller 30 are provided.
　受信機２２は、アンテナ２２Ａおよび無線受信回路を備え、風監視装置１１の送信機１４から送信された開始信号および停止信号をそれぞれ受信する。また、受信機２２は、受信された開始信号および停止信号をそれぞれレコーダＩ／Ｆ２３に出力する。 The receiver 22 includes an antenna 22A and a wireless reception circuit, and receives a start signal and a stop signal transmitted from the transmitter 14 of the wind monitoring device 11, respectively. The receiver 22 outputs the received start signal and stop signal to the recorder I / F 23, respectively.
　レコーダＩ／Ｆ２３は信号処理回路を備えている。レコーダＩ／Ｆ２３は、受信機２２から開始信号が入力されとき、ＩＣレコーダ２４の稼働を開始させるためのパルス信号であるＯＮ信号をＩＣレコーダ２４に出力する。また、レコーダＩ／Ｆ２３は、受信機２２から停止信号が入力されとき、ＩＣレコーダ２４の稼働を停止させるためのパルス信号であるＯＦＦ信号をＩＣレコーダ２４に出力する。 The recorder I / F 23 includes a signal processing circuit. When a start signal is input from the receiver 22, the recorder I / F 23 outputs an ON signal that is a pulse signal for starting the operation of the IC recorder 24 to the IC recorder 24. Further, when a stop signal is input from the receiver 22, the recorder I / F 23 outputs an OFF signal, which is a pulse signal for stopping the operation of the IC recorder 24, to the IC recorder 24.
　ＩＣレコーダ２４は、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音する装置である。ＩＣレコーダ２４は、音声入力端子、アナログーデジタル変換回路、例えばフラッシュメモリからなる記憶素子、時計等を備えている。また、ＩＣレコーダ２４は、これらの構成要素を制御すると共に、基準音圧レベル以上の音圧レベルを有する音を選択ないし抽出する回路を備えている。ＩＣレコーダ２４の音声入力端子にはマイクロフォン２５が接続されている。ＩＣレコーダ２４は、パラボラ集音器２６により集音され、マイクロフォン２５により取得された音をデジタルの音声データに変換し、この音声データのうち、基準音圧レベル以上の音圧レベルを有する音に対応する音声データのみを選択ないし抽出して記憶素子に記憶する。なお、ＩＣレコーダ２４における、基準音圧レベル以上の音圧レベルを有する音のみを録音する処理ないし動作は、例えば、ソニー株式会社製のＩＣレコーダが備えているＶＯＲ（Ｖｏｉｃｅ　Ｏｐｅｒａｔｅｄ　Ｒｅｃｏｒｄｉｎｇ）機能により実現することができる。 The IC recorder 24 is a device that records only sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level. The IC recorder 24 includes an audio input terminal, an analog-digital conversion circuit, for example, a storage element including a flash memory, a clock, and the like. The IC recorder 24 includes a circuit that controls these components and selects or extracts a sound having a sound pressure level equal to or higher than a reference sound pressure level. A microphone 25 is connected to the audio input terminal of the IC recorder 24. The IC recorder 24 converts the sound collected by the parabolic sound collector 26 and acquired by the microphone 25 into digital sound data, and the sound data has a sound pressure level equal to or higher than the reference sound pressure level. Only corresponding audio data is selected or extracted and stored in the storage element. Note that the processing or operation of recording only sound having a sound pressure level equal to or higher than the reference sound pressure level in the IC recorder 24 is realized by, for example, a VOR (Voice Operated Recording) function provided in an IC recorder manufactured by Sony Corporation. can do.
　また、ＩＣレコーダ２４は制御端子を備えている。この制御端子にはレコーダＩ／Ｆ２３が接続されており、レコーダＩ／Ｆ２３から出力されるＯＮ信号およびＯＦＦ信号がそれぞれ入力される。ＯＮ信号が入力されたとき、ＩＣレコーダ２４は稼働を開始する。ＩＣレコーダ２４が稼働をしている間に、マイクロフォン２５から所定の基準音圧レベル以上の音圧レベルを有する音が入力されると、ＩＣレコーダ２４は、入力された音の音声データを記憶素子に記憶する動作、すなわち、録音動作を行う。また、ＯＦＦ信号が入力されたとき、ＩＣレコーダ２４は稼働を停止する。 Also, the IC recorder 24 has a control terminal. A recorder I / F 23 is connected to this control terminal, and an ON signal and an OFF signal output from the recorder I / F 23 are respectively input. When the ON signal is input, the IC recorder 24 starts operation. When a sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level is input from the microphone 25 while the IC recorder 24 is in operation, the IC recorder 24 stores the sound data of the input sound as a storage element. The operation to be stored in memory, that is, the recording operation is performed. When the OFF signal is input, the IC recorder 24 stops operating.
　また、ＩＣレコーダ２４は、自らが稼働を開始した時刻を示す時刻データ（タイムスタンプ）を記憶素子に記憶する機能（時刻記憶部としての機能）を備えている。 Further, the IC recorder 24 has a function of storing time data (time stamp) indicating a time at which the IC recorder 24 starts operation in a storage element (a function as a time storage unit).
　また、録音装置２１は、太陽電池パネル２８、鉛蓄電池２９、および充放電コントローラ３０により、受信機２２およびＩＣレコーダ２４等への継続的な電源電力の供給を自力で行うことができる。充放電コントローラ３０は、晴れた日中等、太陽電池パネル２８により十分な電力を発電することができるとき、太陽電池パネル２８により発電された電力を、受信機２２、ＩＣレコーダ２４、および鉛蓄電池２９に供給する。また、充放電コントローラ３０は、夜間等、太陽電池パネル２８により十分な電力を発電することができないときには、鉛蓄電池２９に蓄えられた電力を、受信機２２およびＩＣレコーダ２４に供給する。また、レギュレータ２７は、太陽電池パネル２８または鉛蓄電池２９から出力される電源電圧（例えば１２Ｖ）をＩＣレコーダ２４へ供給するに当たり、この電源電圧の値を、ＩＣレコーダ２４を稼働させるのに適切な値（例えば３．３Ｖ）に下げる。 Also, the recording device 21 can supply power continuously to the receiver 22 and the IC recorder 24 by the solar cell panel 28, the lead storage battery 29, and the charge / discharge controller 30 by itself. When the charge / discharge controller 30 can generate sufficient power by the solar panel 28 such as during a sunny day, the charge / discharge controller 30 converts the power generated by the solar panel 28 into the receiver 22, the IC recorder 24, and the lead storage battery 29. To supply. The charge / discharge controller 30 supplies the power stored in the lead storage battery 29 to the receiver 22 and the IC recorder 24 when sufficient power cannot be generated by the solar battery panel 28 such as at night. Further, when the regulator 27 supplies the power supply voltage (for example, 12V) output from the solar battery panel 28 or the lead storage battery 29 to the IC recorder 24, the value of the power supply voltage is suitable for operating the IC recorder 24. Decrease to a value (eg 3.3V).
　　（風騒音記録処理）
　図４および図５は風騒音記録システム１における風騒音記録処理を示している。以下、図４のタイミングチャートを中心に、図５のフローチャートを参照しながら、風騒音記録処理について説明する。 (Wind noise recording processing)
4 and 5 show the wind noise recording process in the wind noise recording system 1. Hereinafter, the wind noise recording process will be described with reference to the flowchart of FIG. 5 focusing on the timing chart of FIG.
　図４において、風騒音の発生源である送電線２近傍で、風が吹いていない状態が続いているとき、風監視装置１１において、風車発電機１２の出力電圧は零であり、それゆえ、送信機１４およびタイマ１３には電源電圧が供給されておらず、送信機１４およびタイマ１３はいずれも稼働を停止している。このとき、タイマ１３において、ノーマルオープンであるａ接点は開いており、ノーマルクローズであるｂ接点は閉じている。一方、この間、録音装置２１において、受信機２２およびＩＣレコーダ２４には太陽電池パネル２８または鉛蓄電池２９から最小限の電源電圧が供給されている。そして、受信機２２は無線信号を受信可能な状態で待機しており、一方、ＩＣレコーダ２４は稼働を停止している。図４中の時点ｔ０はこの状態である。 In FIG. 4, when the wind is not blowing in the vicinity of the transmission line 2 that is the generation source of wind noise, the output voltage of the wind turbine generator 12 is zero in the wind monitoring device 11, and therefore The power supply voltage is not supplied to the transmitter 14 and the timer 13, and the transmitter 14 and the timer 13 are not operating. At this time, in the timer 13, the a contact that is normally open is open, and the b contact that is normally closed is closed. On the other hand, in the recording device 21, the minimum power supply voltage is supplied from the solar battery panel 28 or the lead storage battery 29 to the receiver 22 and the IC recorder 24 during this time. The receiver 22 stands by in a state where it can receive a radio signal, while the IC recorder 24 has stopped operating. This is the state at time t0 in FIG.
　風監視装置１１において、風騒音の発生源である送電線２近傍で風が吹き始めると、その風を受け、風車発電機１２が発電を始め、風車発電機１２の出力電圧が増加する。そして、風速が基準風速に達したとき（図４中の時点ｔ１）、風車発電機１２の出力電圧（電源電圧）が発電機定格電圧に達する。この結果、送信機１４およびタイマ１３が稼働を開始し、タイマ１３が計時を開始する。 In the wind monitoring device 11, when wind starts to blow near the transmission line 2 that is a source of wind noise, the wind turbine generator 12 starts generating power by receiving the wind, and the output voltage of the wind turbine generator 12 increases. When the wind speed reaches the reference wind speed (time point t1 in FIG. 4), the output voltage (power supply voltage) of the wind turbine generator 12 reaches the generator rated voltage. As a result, the transmitter 14 and the timer 13 start operating, and the timer 13 starts measuring time.
　タイマ１３は、上述したように、計時を開始してから所定時間Ｔ（例えば３分）経過するとａ接点が閉じ、ｂ接点が開くように設定されている。タイマ１３が計時を開始してから所定時間Ｔが経過するまでの間、送電線２近傍の風速が基準風速以上である状態が続いた場合に、タイマ１３のａ接点が閉じ、ｂ接点が開く。一方、タイマ１３が計時を開始してから所定時間Ｔが経過する前に、送電線２近傍の風速が基準風速未満となった場合には、その時点でタイマ１３の計時動作がリセットされる。これにより、送電線２近傍の風速の一時的な変動により風監視装置１１においてハンチングが起きることを防止することができ、風騒音の発生原因となる風の発生を確実に検出することができる。 As described above, the timer 13 is set so that the contact a is closed and the contact b is opened when a predetermined time T (for example, 3 minutes) elapses from the start of time measurement. When the wind speed in the vicinity of the transmission line 2 continues to be equal to or higher than the reference wind speed after the timer 13 starts measuring time until the predetermined time T elapses, the contact a of the timer 13 is closed and the contact b is opened. . On the other hand, if the wind speed in the vicinity of the transmission line 2 becomes lower than the reference wind speed before the predetermined time T has elapsed since the timer 13 started timing, the timing operation of the timer 13 is reset at that time. Thereby, it is possible to prevent hunting from occurring in the wind monitoring device 11 due to temporary fluctuations in the wind speed in the vicinity of the transmission line 2, and it is possible to reliably detect the generation of wind that causes wind noise.
　タイマ１３が計時を開始してから所定時間Ｔが経過するまでの間、送電線２近傍の風速が基準風速以上である状態が続いた場合には（図５中のステップ１：ＹＥＳ）、タイマ１３はａ接点を閉じ、ｂ接点を開く。これにより、タイマ１３から送信機１４へ開始信号が出力され、この開始信号が送信機１４から録音装置２１へ無線送信される（図４中の時点ｔ２、図５中のステップＳ２）。 If the wind speed in the vicinity of the transmission line 2 continues to be equal to or higher than the reference wind speed after the timer 13 starts measuring time until the predetermined time T elapses (step 1: YES in FIG. 5), the timer 13 closes the a contact and opens the b contact. Thereby, a start signal is output from the timer 13 to the transmitter 14, and this start signal is wirelessly transmitted from the transmitter 14 to the recording device 21 (time t2 in FIG. 4, step S2 in FIG. 5).
　録音装置２１において、風監視装置１１の送信機１４から送信された開始信号が受信機２２により受信されると、この開始信号がレコーダＩ／Ｆ２３に出力され、これに応じ、レコーダＩ／Ｆ２３がＩＣレコーダ２４へＯＮ信号を出力する（図５中のステップＳ３）。 In the recording device 21, when the start signal transmitted from the transmitter 14 of the wind monitoring device 11 is received by the receiver 22, this start signal is output to the recorder I / F 23, and the recorder I / F 23 responds accordingly. An ON signal is output to the IC recorder 24 (step S3 in FIG. 5).
　ＩＣレコーダ２４は、ＯＮ信号を受け取り、これに応じて稼働を開始する。このとき、ＩＣレコーダ２４は、その時点の時刻を示す時刻データ（タイムスタンプ）を、ＩＣレコーダ２４が有する記憶素子に記憶する（図５中のステップＳ４）。 The IC recorder 24 receives the ON signal and starts operating in response thereto. At this time, the IC recorder 24 stores time data (time stamp) indicating the current time in a storage element of the IC recorder 24 (step S4 in FIG. 5).
　ＩＣレコーダ２４は稼動中、録音装置２１が設置された場所の周囲の音の音圧レベルが基準音圧レベル以上である間、その音を録音する処理を行う（図５中のステップＳ５）。例えば、図４中の時点ｔ３から時点ｔ４までの間、および時点ｔ５から時点ｔ６までの間は、録音装置２１が設置された場所の周囲の音の音圧レベルが基準音圧レベル以上であるので、ＩＣレコーダ２４はこれらの間の音を録音する。一方、図４中の時点ｔ２から時点ｔ３までの間、時点ｔ４から時点ｔ５までの間、および時点ｔ６からｔ７までの間は、録音装置２１が設置された場所の周囲の音の音圧レベルが基準音圧レベル未満であるので、ＩＣレコーダ２４は、これらの間の音を録音しない。 During operation, the IC recorder 24 performs a process of recording the sound while the sound pressure level of the sound around the place where the recording device 21 is installed is equal to or higher than the reference sound pressure level (step S5 in FIG. 5). For example, between time t3 and time t4 in FIG. 4 and from time t5 to time t6, the sound pressure level of the sound around the place where the recording device 21 is installed is equal to or higher than the reference sound pressure level. Therefore, the IC recorder 24 records the sound between them. On the other hand, during the period from time t2 to time t3, from time t4 to time t5, and from time t6 to t7 in FIG. 4, the sound pressure level of the sound around the place where the recording device 21 is installed. Is less than the reference sound pressure level, the IC recorder 24 does not record the sound between them.
　一方、風監視装置１１は、送電線２近傍の風速が基準風速以上である間、図４中の時点ｔ２直後の状態を維持している。また、風監視装置１１は、送電線２近傍の風速が基準風速未満となるも、それが短時間である場合には、風監視装置１１に設けられたキャパシタ１６の作用により、時点ｔ２直後の状態を維持する。 On the other hand, the wind monitoring device 11 maintains the state immediately after the time point t2 in FIG. 4 while the wind speed in the vicinity of the transmission line 2 is equal to or higher than the reference wind speed. Further, the wind monitoring device 11 has a wind speed in the vicinity of the power transmission line 2 that is less than the reference wind speed, but when this is a short time, the action of the capacitor 16 provided in the wind monitoring device 11 causes the wind monitoring device 11 immediately after the time t2. Maintain state.
　送電線２近傍の風速が基準風速未満となり、その状態がある程度の時間続くと、風車発電機１２の出力電圧が発電機定格電圧を下回り、さらにタイマ保持限界電圧未満となる（図４中の時点７）。なお、この時点では、風車発電機１２の出力電圧がレギュレータ１５へ供給されることによりレギュレータ１５から送信機１４へ入力される電圧は、送信機１４の動作限界電圧以上である。風車発電機１２の出力電圧がタイマ保持限界電圧未満になると（図５中のステップＳ６：ＹＥＳ）、タイマ１３においてａ接点が開き、ｂ接点が閉じる。これにより、タイマ１３から送信機１４へ停止信号が出力され、この停止信号が送信機１４から録音装置２１へ無線送信される（図５中のステップＳ７）。タイマ１３はｂ接点を閉じた後、稼働を停止する。 When the wind speed in the vicinity of the transmission line 2 becomes less than the reference wind speed and this state continues for a certain period of time, the output voltage of the wind turbine generator 12 falls below the generator rated voltage and further becomes less than the timer holding limit voltage (time point in FIG. 4). 7). At this time, the voltage input from the regulator 15 to the transmitter 14 when the output voltage of the wind turbine generator 12 is supplied to the regulator 15 is equal to or higher than the operation limit voltage of the transmitter 14. When the output voltage of the wind turbine generator 12 becomes less than the timer holding limit voltage (step S6 in FIG. 5: YES), the a contact is opened and the b contact is closed in the timer 13. As a result, a stop signal is output from the timer 13 to the transmitter 14, and this stop signal is wirelessly transmitted from the transmitter 14 to the recording device 21 (step S7 in FIG. 5). The timer 13 stops operation after closing the b contact.
　録音装置２１において、風監視装置１１の送信機１４から送信された停止信号が受信機２２により受信されると、この停止信号がレコーダＩ／Ｆ２３に出力され、これに応じ、レコーダＩ／Ｆ２３がＩＣレコーダ２４へＯＦＦ信号を出力する（図５中のステップＳ８）。 In the recording device 21, when the stop signal transmitted from the transmitter 14 of the wind monitoring device 11 is received by the receiver 22, this stop signal is output to the recorder I / F 23, and the recorder I / F 23 responds accordingly. An OFF signal is output to the IC recorder 24 (step S8 in FIG. 5).
　ＩＣレコーダ２４は、ＯＦＦ信号を受け取り、これに応じ、時点ｔ３から時点ｔ４までの間、および時点ｔ５から時点ｔ６までの間に録音した音声データを、ＩＣレコーダ２４が有する記憶素子に音声ファイルとして記憶する。具体的には、時点ｔ３から時点ｔ４までの間に録音した音声データ、および時点ｔ５から時点ｔ６までの間に録音した音声データを録音時刻順に連続して（間を詰めて）配置し、１つの音声ファイルとしての形を作って記憶する。その後、ＩＣレコーダ２４は稼働を停止する（図５中のステップＳ９）。 The IC recorder 24 receives the OFF signal, and in response to this, the audio data recorded from the time point t3 to the time point t4 and from the time point t5 to the time point t6 is stored in the storage element of the IC recorder 24 as an audio file. Remember. Specifically, the audio data recorded from time t3 to time t4 and the audio data recorded from time t5 to time t6 are arranged consecutively in order of recording time (with intervals). Create and store the shape as one audio file. Thereafter, the IC recorder 24 stops operating (step S9 in FIG. 5).
　続いて、送電線２近傍の風速がさらに低下し、この結果、風監視装置１１において、レギュレータ１５から送信機１４に入力される電圧が送信機１４の動作限界電圧未満となると（図４中の時点ｔ８）、送信機１４が稼働を停止する。 Subsequently, the wind speed in the vicinity of the transmission line 2 further decreases, and as a result, in the wind monitoring device 11, when the voltage input from the regulator 15 to the transmitter 14 becomes less than the operating limit voltage of the transmitter 14 (in FIG. 4). At time t8), the transmitter 14 stops operating.
　以上説明した通り、本発明の実施形態による風騒音記録システム１は、風監視装置１１と録音装置２１が別々の装置であり、風監視装置１１が、風騒音の発生源である送電線２近傍に配置され、録音装置２１が、風騒音が実際に聞こえる場所に配置され、風監視装置１１から録音装置２１へ開始信号および停止信号がそれぞれ送信される構成を有している。これにより、風騒音記録システム１によれば、送電線２の微風振動による風騒音のように、送電線２近傍で吹く風により風騒音が発生し、その風騒音が当該送電線２から離れた場所に不快な異音として届くものの、その風騒音が発生している間、その風騒音が届く場所で風が吹いていない場合であっても、風騒音を確実に録音しつつ、録音時間を短くすることができる。すなわち、送電線２近傍の風速が基準風速以上であり、風騒音が発生しており、または発生するおそれがある間は、風騒音が届くことが報告された場所においてＩＣレコーダ２４が稼働し、基準音圧レベル以上の音のみを録音するので、風騒音を確実に録音することができる。一方、送電線２近傍の風速が基準風速未満であり、風騒音が発生するおそれがない間は、風騒音が届くことが報告された場所においてＩＣレコーダ２４が稼働せず、録音動作を一切行わないので、録音時間を短くすることができる。 As described above, in the wind noise recording system 1 according to the embodiment of the present invention, the wind monitoring device 11 and the recording device 21 are separate devices, and the wind monitoring device 11 is in the vicinity of the power transmission line 2 that is a source of wind noise. The recording device 21 is arranged in a place where wind noise can actually be heard, and a start signal and a stop signal are transmitted from the wind monitoring device 11 to the recording device 21, respectively. Thus, according to the wind noise recording system 1, wind noise is generated by wind blowing in the vicinity of the power transmission line 2, such as wind noise due to slight wind vibration of the power transmission line 2, and the wind noise is separated from the power transmission line 2. Although the noise reaches the location as an unpleasant noise, while the wind noise is occurring, even if there is no wind blowing in the location where the wind noise reaches, record the wind noise and reduce the recording time. Can be shortened. That is, while the wind speed in the vicinity of the transmission line 2 is equal to or higher than the reference wind speed and wind noise is generated or may occur, the IC recorder 24 is operated in a place where it is reported that wind noise reaches, Since only the sound above the reference sound pressure level is recorded, wind noise can be recorded reliably. On the other hand, as long as the wind speed in the vicinity of the power transmission line 2 is less than the reference wind speed and there is no possibility of generating wind noise, the IC recorder 24 does not operate in a place where it is reported that wind noise arrives, and no recording operation is performed. Because there is no, recording time can be shortened.
　そして、風騒音記録システム１によれば、録音時間が短くなり、また、録音した音声データ中に風騒音が含まれている確率が高くなるので、録音した音声を聞き、その音声の中から風騒音を探し出す作業を短縮化することができ、作業員の負担を軽減することができる。 According to the wind noise recording system 1, since the recording time is shortened and the probability that the recorded sound data includes wind noise is increased, the recorded sound is heard and the wind sound is detected from the sound. The work of searching for noise can be shortened, and the burden on workers can be reduced.
　また、風騒音記録システム１によれば、風監視装置１１と録音装置２１との間で開始信号および停止信号の無線通信を行い、上述した録音動作制御を行うことができるので、風騒音の発生源である送電線２と風騒音が聞こえる場所との間が長距離であり、またはこれらの場所の間に渓谷等があり、両場所間の行き来が困難な場合でも、風騒音の録音を容易に実現することができる。 Moreover, according to the wind noise recording system 1, since the start signal and the stop signal can be wirelessly communicated between the wind monitoring device 11 and the recording device 21 and the above-described recording operation control can be performed, the generation of wind noise can be performed. Easy recording of wind noise even if the distance between the power transmission line 2 and the place where wind noise can be heard is long, or there is a valley between these places, making it difficult to come and go between the two places. Can be realized.
　また、風監視装置１１は、風車発電機１２の発電により稼働するので、山地の送電鉄塔等、弱電機器を動作させるための電源の供給を得難い場所でも動作させることができる。 Moreover, since the wind monitoring device 11 is operated by the power generation of the wind turbine generator 12, it can be operated even in a place where it is difficult to obtain a power supply for operating a low-power device such as a power transmission tower in a mountainous area.
　また、録音装置２１は、風車発電機１２とは別の独立した装置であるので、風騒音が聞こえる旨の報告をした者が指示する、実際に風騒音が聞こえる場所に録音装置２１を配置して、その場所の周囲の音を録音することができる。これにより、風騒音を捕捉できる確実性が高まる。また、風監視装置１１は山地の鉄塔３の頂部など到達し難い場所に配置せざるを得ないことがある一方で、録音装置２１は鉄塔３から離れた平地に配置することができる。これにより、ＩＣレコーダ２４により録音した音声データの回収が容易であり、また、録音装置２１のメンテナンスが容易である。 Further, since the recording device 21 is an independent device different from the wind turbine generator 12, the recording device 21 is arranged in a place where the wind noise can be actually instructed by a person who reports that the wind noise can be heard. Can record the sound around the place. This increases the certainty that wind noise can be captured. In addition, the wind monitoring device 11 may have to be placed at a place that is difficult to reach, such as the top of the steel tower 3 in the mountainous area, while the recording device 21 can be placed on a flat ground far from the steel tower 3. Thereby, the voice data recorded by the IC recorder 24 can be easily collected, and the recording device 21 can be easily maintained.
　また、録音装置２１において、稼働を開始した時刻を示す時刻データ（タイムスタンプ）を記憶素子に記憶するので、この時刻データに基づき、風騒音が聞こえた時刻を容易に特定することが可能になる。 Further, since the recording device 21 stores time data (time stamp) indicating the start time of operation in the storage element, it is possible to easily specify the time when wind noise was heard based on this time data. .
　一方、風監視装置１１において、送信機１４の動作限界電圧をタイマ１３のタイマ保持限界電圧よりも低く設定したので（図４参照）、送信機１４が稼働を停止する前に、タイマ１３から停止信号を出力することができ、したがって、停止信号を送信機１４により確実に録音装置２１へ送信することができる。 On the other hand, in the wind monitoring device 11, since the operation limit voltage of the transmitter 14 is set lower than the timer holding limit voltage of the timer 13 (see FIG. 4), the transmitter 14 is stopped from the timer 13 before the operation is stopped. Therefore, the stop signal can be reliably transmitted to the recording device 21 by the transmitter 14.
　なお、上述した実施形態では、風騒音記録システム１により、送電線２の微風振動による風騒音を録音する場合を例にあげたが、本発明はこれに限らない。本発明の風騒音記録システムは、例えば風切り音等、微風振動以外の原因による風騒音を録音することもできる。また、本発明の風騒音記録システムは、送電線以外の電線、または電線以外の風騒音発生源から発せられる風騒音を録音することもできる。 In the above-described embodiment, the wind noise recording system 1 records the wind noise due to the slight wind vibration of the transmission line 2 as an example, but the present invention is not limited to this. The wind noise recording system of the present invention can also record wind noise caused by causes other than slight wind vibration such as wind noise. The wind noise recording system of the present invention can also record wind noise generated from electric wires other than power transmission lines or wind noise sources other than electric wires.
　また、本発明は、請求の範囲および明細書全体から読み取ることのできる発明の要旨または思想に反しない範囲で適宜変更可能であり、そのような変更を伴う風騒音記録システムおよび風騒音記録方法もまた本発明の技術思想に含まれる。 Further, the present invention can be appropriately changed without departing from the spirit or idea of the invention which can be read from the claims and the entire specification, and a wind noise recording system and a wind noise recording method accompanied with such changes are also provided. It is also included in the technical idea of the present invention.
　１　風騒音記録システム
　２　送電線（発生源）
　３　鉄塔
　１１　風監視装置
　１２　風車発電機
　１２Ａ　羽根
　１３　タイマ（信号出力装置）
　１４　送信機
　１４Ａ　アンテナ
　１５　レギュレータ
　１６　キャパシタ
　２１　録音装置
　２２　受信機
　２２Ａ　アンテナ
　２３　レコーダＩ／Ｆ（制御部）
　２４　ＩＣレコーダ（録音機）
　２５　マクロフォン
　２６　パラボラ集音器
　２７　レギュレータ
　２８　太陽電池パネル
　２９　鉛蓄電池
　３０　充放電コントローラ 1 Wind noise recording system 2 Transmission line (source)
3 Steel Tower 11 Wind Monitoring Device 12 Windmill Generator 12A Blade 13 Timer (Signal Output Device)
14 Transmitter 14A Antenna 15 Regulator 16 Capacitor 21 Recording Device 22 Receiver 22A Antenna 23 Recorder I / F (Control Unit)
24 IC recorder (recorder)
25 Macrophone 26 Parabolic Sound Collector 27 Regulator 28 Solar Panel 29 Lead Acid Battery 30 Charge / Discharge Controller

Claims (7)

  1. 　風騒音を記録する風騒音記録システムであって、
    　風騒音の発生源近傍に配置され、前記発生源近傍の風速が所定の基準風速以上となった時点以降に開始信号を送信し、その後、前記発生源近傍の風速が前記基準風速未満となった時点以降に停止信号を送信する風監視装置と、
    　前記発生源から離れた場所に配置され、前記開始信号が受信されてから前記停止信号が受信されるまでの間、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音する録音装置とを備えていることを特徴とする風騒音記録システム。     A wind noise recording system for recording wind noise,
    It is arranged in the vicinity of the wind noise generation source, and a start signal is transmitted after the time when the wind speed in the vicinity of the generation source becomes equal to or higher than a predetermined reference wind speed, and then the wind speed in the vicinity of the generation source becomes less than the reference wind speed. A wind monitoring device that transmits a stop signal after the time,
    A recording device that is arranged at a location away from the source and records only sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level from when the start signal is received until the stop signal is received And a wind noise recording system.
  2. 　前記風監視装置は、
    　風を受けて発電し、当該風の風速が前記基準風速以上である間、出力電圧が所定の基準電圧以上となる風車発電機と、
    　前記風車発電機の出力電圧が供給され、前記出力電圧が前記基準電圧以上である状態が所定時間継続したときに前記開始信号を出力し、その後、前記出力電圧が前記基準電圧未満となった時点以降に前記停止信号を出力する信号出力装置と、
    　前記開始信号および前記停止信号をそれぞれ送信する送信機とを備えていることを特徴とする請求項１に記載の風騒音記録システム。     The wind monitoring device
    A wind turbine generator that generates power by receiving wind and has an output voltage equal to or higher than a predetermined reference voltage while the wind speed of the wind is equal to or higher than the reference wind speed;
    When the output voltage of the wind turbine generator is supplied and the state where the output voltage is equal to or higher than the reference voltage continues for a predetermined time, the start signal is output, and then the output voltage becomes less than the reference voltage A signal output device for outputting the stop signal thereafter;
    The wind noise recording system according to claim 1, further comprising a transmitter that transmits the start signal and the stop signal, respectively.
  3. 　前記信号出力装置および前記送信機は、前記風車発電機の出力電圧が電源電圧として供給されることにより動作し、前記送信機の動作限界電圧が前記信号出力装置の動作限界電圧よりも小さいことを特徴とする請求項１または２に記載の風騒音記録システム。 The signal output device and the transmitter operate when the output voltage of the wind turbine generator is supplied as a power supply voltage, and the operation limit voltage of the transmitter is smaller than the operation limit voltage of the signal output device. The wind noise recording system according to claim 1 or 2, characterized in that
  4. 　前記録音装置は、
    　前記開始信号および前記停止信号をそれぞれ受信する受信機と、
    　前記基準音圧レベル以上の音圧レベルを有する音のみを録音する録音機と、
    　前記受信機による前記開始信号の受信に応じて前記録音機の稼働を開始させ、前記受信機による前記停止信号の受信に応じて前記録音機の稼働を停止させる制御部とを備えていることを特徴とする請求項１ないし３のいずれかに記載の風騒音記録システム。     The recording device is
    A receiver for receiving each of the start signal and the stop signal;
    A recorder that records only sound having a sound pressure level equal to or higher than the reference sound pressure level;
    A controller that starts operation of the recorder in response to reception of the start signal by the receiver and stops operation of the recorder in response to reception of the stop signal by the receiver. The wind noise recording system according to any one of claims 1 to 3, wherein
  5. 　前記録音機が稼働を開始した時刻を示す時刻データを記憶する時刻記憶部を備えていることを特徴とする請求項４に記載の風騒音記録システム。 5. The wind noise recording system according to claim 4, further comprising a time storage unit for storing time data indicating a time at which the recorder starts operation.
  6. 　前記発生源は鉄塔または電柱に架設された電線であることを特徴とする請求項１ないし５のいずれかに記載の風騒音記録システム。 The wind noise recording system according to any one of claims 1 to 5, wherein the generation source is an electric wire installed on a steel tower or a utility pole.
  7. 　風騒音を記録する風騒音記録方法であって、
    　風騒音の発生源近傍に風監視装置を配置し、当該風監視装置により、前記発生源近傍の風速が所定の基準風速以上となった時点以降に開始信号を送信し、その後、前記発生源近傍の風速が前記基準風速未満となった時点以降に停止信号を送信し、
    　前記発生源から離れた場所に録音装置を配置し、当該録音装置により、前記風監視装置から送信された開始信号および停止信号をそれぞれ受信し、前記開始信号が受信されてから前記停止信号が受信されるまでの間、所定の基準音圧レベル以上の音圧レベルを有する音のみを録音することを特徴とする風騒音記録方法。
          A wind noise recording method for recording wind noise,
    A wind monitoring device is arranged in the vicinity of a wind noise generation source, and a start signal is transmitted by the wind monitoring device after the time when the wind speed in the vicinity of the generation source is equal to or higher than a predetermined reference wind speed, and then in the vicinity of the generation source. Send a stop signal after the time when the wind speed of becomes less than the reference wind speed,
    A recording device is disposed at a location distant from the generation source, and the recording device receives the start signal and the stop signal transmitted from the wind monitoring device, respectively, and the stop signal is received after the start signal is received. Until the sound is recorded, only a sound having a sound pressure level equal to or higher than a predetermined reference sound pressure level is recorded.
PCT/JP2014/053886 2014-02-19 2014-02-19 Wind-noise recording system and wind-noise recording method WO2015125228A1 (en)

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