WO2014184827A1 - 車両接近通報装置 - Google Patents
車両接近通報装置 Download PDFInfo
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- WO2014184827A1 WO2014184827A1 PCT/JP2013/003119 JP2013003119W WO2014184827A1 WO 2014184827 A1 WO2014184827 A1 WO 2014184827A1 JP 2013003119 W JP2013003119 W JP 2013003119W WO 2014184827 A1 WO2014184827 A1 WO 2014184827A1
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- voltage waveform
- notification sound
- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/02—Synthesis of acoustic waves
Definitions
- the present disclosure relates to a vehicle approach notification device that notifies the surroundings that a vehicle is approaching by generating sound from the vehicle.
- a vehicle approach notification device that generates an approach notification sound is being mounted to increase the degree of recognition of being near (see, for example, Patent Document 1).
- sound generation data such as PCM (pulse code modulation) stored in a memory of a microcomputer, that is, a sound code converted into a data code and encoded is recorded at each sampling period.
- a method of generating sound by setting in a D / A converter or PWM output device is used. The output of the oscillating running sound by such a vehicle approach notification device is performed during low speed running with low road noise.
- Sound generation data mainly represents simulated running sounds such as simulated engine sounds and simulated motor sounds, and is stored in memory as a certain amount of data.
- the approach notification sound is generated by repeatedly outputting the data for a certain amount of time.
- This phonetic data is a chord that combines multiple frequency components, and is expressed as a curve that draws the peak of a voice or electrical waveform, that is, ⁇ coordinate and inflection of the head '' that raises or lowers the volume over time.
- “Sound fluctuation (envelope)” is added to make it easier for pedestrians to notice the approach of the vehicle.
- the vehicle approach notification device reads out the sound generation data at a pitch corresponding to a carrier frequency from a memory device that stores the sound generation data of the vehicle approach notification sound, and the first approach notification corresponding to the sound generation data.
- a first sounding output generator for generating a sound voltage waveform signal, and a first adjusting the volume by controlling the voltage level of the first approach notification sound voltage waveform signal generated from the first sounding output generator A first sounding voltage waveform signal generation unit having a volume variable unit, and reading out the sounding data from the memory device at a pitch corresponding to a carrier frequency, and a second approach notification sound voltage waveform signal corresponding to the sounding data.
- a second sound volume voltage waveform signal generation unit having a second volume variable unit that adjusts the sound volume, the first approach notification sound voltage waveform signal that controls the voltage level, and the second approach that controls the voltage level
- a mixer circuit that mixes the notification sound voltage waveform signal, and a current corresponding to the voltage of the mixed approach notification sound voltage waveform signal that flows through the sound generator mounted on the vehicle, so that the vehicle approach notification sound is generated by the sound generator.
- an amplifier that produces the pronunciation of
- the near notification sound voltage is obtained by a simple configuration including the first and second sound output outputs and the first and second sound generation voltage waveform signal generators including the first and second sound volume changers.
- FIG. 1 is a circuit block diagram of a vehicle approach notification system including a vehicle approach notification device according to the first embodiment.
- FIG. 2 is a functional block diagram functionally showing the vehicle approach notification system shown in FIG.
- FIG. 1 is a circuit block diagram of a vehicle approach notification system including a vehicle approach notification device according to the present embodiment.
- FIG. 2 is a functional block diagram functionally showing the vehicle approach notification system shown in FIG. With reference to these drawings, a vehicle approach notification system including the vehicle approach notification device according to the present embodiment will be described.
- the vehicle approach notification system includes a vehicle speed sensor 1, a vehicle approach notification device 2, and a speaker 3.
- the pseudo engine sound is output from the speaker 3 that is a sounding body during low speed traveling with a low road noise (for example, 20 km / h or less).
- a low road noise for example, 20 km / h or less.
- an approach notification sound such as a pseudo motor sound is generated to notify a nearby pedestrian or the like of the approach of the vehicle.
- the vehicle approach notification device 2 is separated from the speaker 3, but the speaker 3 may be integrated with the vehicle approach notification device 2.
- the vehicle speed sensor 1 outputs a vehicle speed sensor signal as a vehicle running state detection signal.
- the vehicle approach notification device 2 inputs a vehicle speed sensor signal from the vehicle speed sensor 1 to acquire the vehicle speed and controls sound generation according to the vehicle speed while the vehicle is traveling at a low speed.
- the sound is generated according to the vehicle speed, but the sensor that generates a sensor signal according to the traveling state of another vehicle, for example, the accelerator opening indicated by the sensor signal of the accelerator opening sensor that indicates the accelerator opening is indicated.
- the sound generation can be controlled according to the degree.
- the vehicle approach notification device 2 includes a vehicle speed sensor signal input circuit 20, a microcomputer 21, a voltage control unit 22, a low-pass filter (hereinafter referred to as LPF) 23, a mixer circuit 24, and a power amplifier (hereinafter referred to as AMP) 25. .
- LPF low-pass filter
- AMP power amplifier
- the vehicle speed sensor signal input circuit 20 is a part for inputting the vehicle speed sensor signal output from the vehicle speed sensor 1 described above, and transmits it to the microcomputer 21.
- the microcomputer 21 has a memory and an arithmetic unit corresponding to a memory device (not shown), and has two sets of a DAC 21a and a PWM output device 21b.
- the microcomputer 21 outputs two approach notification sound voltage waveform signals as sound output by the outputs from the two sets of DAC 21a and the PWM output device 21b and the voltage control unit 22 provided in each of the two sets as will be described later. Is generated.
- the DAC 21a and the voltage control unit 22 correspond to the volume variable device 26 (26a, 26b)
- the PWM output device 21b corresponds to the sound generation signal generator 27 (27a, 27b).
- the two sets of DAC 21a, PWM output unit 21b, and voltage control unit 22 respectively generate first and second sounding voltage waveform signal generation units that generate approach notification sound voltage waveform signals that are sounding outputs of the respective groups. It is composed.
- the memory of the microcomputer 21 stores sound generation data such as PCM data representing a sound control program, simulated engine sound, simulated motor sound, and the like, as well as envelope frequency, carrier frequency, and volume (sound pressure). Data for setting level) are stored.
- the microcomputer 21 stores an envelope frequency table associated with the vehicle running state such as the vehicle speed and the accelerator opening degree, a carrier frequency and delay time table associated with the envelope frequency, and the like in the memory. Using the tables stored in these memories, the microcomputer 21 uses an arithmetic device to calculate an envelope frequency corresponding to a traveling state such as a vehicle speed or an accelerator opening degree while driving at a low speed, or to respond to the envelope frequency. Calculate the volume, carrier frequency or delay time.
- the microcomputer 21 reads out sound generation data for each sampling period corresponding to a predetermined carrier frequency, taking the delay time into consideration, for each of the first and second sound generation voltage waveform signal generation units, and outputs it to each PWM output device 21b.
- an approach notification sound voltage waveform signal corresponding to sounding data to be sounded is output from the PWM output device 21b.
- the approach notification sound voltage waveform signal at this time is still a signal before the volume is varied.
- the DAC 21a Independent of the approach notification sound voltage waveform signal from the PWM output device 21b, the DAC 21a generates a control signal for varying the sound volume to be generated according to the envelope frequency.
- the voltage control unit 22 is provided corresponding to each set of the DAC 21a and the PWM output unit 21b, and changes the voltage level of the approach notification sound voltage waveform signal of the PWM output unit 21b based on a control signal transmitted from the DAC 21a.
- the voltage level of the approach notification sound voltage waveform signal of the PWM output device 21b is changed to the voltage level indicated by the control signal. Therefore, for example, the voltage level of the approach notification sound voltage waveform signal is decreased as the sound pressure level to be generated is decreased, and is output from the voltage control unit 22.
- the PWM output device 21b serves as sound signal generators 27a and 27b that read sound data at a predetermined pitch using an oscillation signal generated by the low frequency oscillator 21c provided in the microcomputer 21 as a clock.
- One first sound signal generator 27a reads sound data at a predetermined pitch without a delay time
- the other second sound signal generator 27b starts reading sound data by the first sound signal generator 27a.
- the sound generation data is read out at a predetermined pitch by providing a delay time for the data.
- the DAC 21a and the voltage control unit 22 adjust the sound output volume (VOL) by changing the voltage level of the approach notification sound voltage waveform signal generated from each of the first and second sound output generators 27a and 27b. It functions as the first and second volume variable devices 26a and 26b.
- the LPF 23 corresponds to a filter device, is provided corresponding to each voltage control unit 22, and outputs corresponding to the output of the PWM output device 21 b that is transmitted via the voltage control unit 22 by removing high-frequency noise components. Is generated.
- the LPF 23 stores a voltage corresponding to the output of the voltage control unit 22 in a built-in capacitor, and outputs it to the AMP 25 via the mixer circuit 24.
- the mixer circuit 24 mixes the output of each LPF 23. That is, the mixer circuit 24 generates an output of a voltage waveform obtained by synthesizing two approach notification sound voltage waveform signals from which noise components have been removed, and applies the voltage waveform output to the AMP 25.
- the AMP 25 causes a current corresponding to the output of the LPF 23 to flow through the speaker 3 based on voltage application from a constant voltage source (not shown).
- the sound pressure generated by the speaker 3 is determined according to the magnitude (amplitude) of the current supplied from the AMP 25, and the magnitude of the current supplied from the AMP 25 is determined by the output waveform of the LPF 23 corresponding to the PWM output. For this reason, the electric current which AMP25 flows based on adjustment of the voltage level in the voltage control part 22 can be changed.
- the vehicle approach notification system including the vehicle approach notification device according to the present embodiment is configured as described above.
- the voltage level of the approach notification sound voltage waveform signal output from the first and second sound signal generators 27a and 27b can be varied.
- the volume setting value can be varied.
- the volume of the pronunciation can be adjusted.
- the second sound generation signal generator 27b by adjusting the delay time of the approach notification sound voltage waveform signal generated by the second sound generation voltage waveform signal generation unit, each of the first and second sound generation voltage waveform signal generation units.
- the phase of the approach notification sound voltage waveform signal that is output can be changed.
- first and second sound signal generators 27a and 27b are adjusted by adjusting the pitch at which sound data is read by the first and second sound signal generators 27a and 27b so that the first and second sound signal generators 27a and 27b have the same pitch or different pitches.
- the frequency of each approach notification sound voltage waveform signal to be output can also be changed. Based on these operations, “fluctuation” in pronunciation can be realized by each of the following realizing methods, for example.
- (1) Fluctuation realization method by changing the volume By changing the volume, "fluctuation” can be added to the approaching notification sound that is pronounced.
- the volume setting value (voltage level) is adjusted by the first volume variable device 26a according to the envelope frequency calculated from the vehicle speed sensor signal. To do. That is, as the vehicle speed increases, the envelope frequency is increased, and the volume is increased or decreased in accordance with the envelope frequency, thereby adding “fluctuation (envelope)” by varying the volume to the approaching notification sound to be pronounced. In this case, the approach sound voltage waveform signal is not output from the second sound signal generator 27b.
- the envelope frequency is calculated in accordance with the vehicle speed, and the volume setting value is adjusted in accordance with the envelope frequency, but based on the driving state other than the vehicle speed, for example, the accelerator opening, the larger the accelerator opening,
- the envelope frequency may be calculated as a value that increases the envelope frequency.
- the envelope frequency can be calculated based on the ambient noise level indicating the ambient noise level, so that the envelope frequency increases as the ambient noise level increases.
- the envelope frequency may be calculated based on any one or more of the opening degree and the ambient noise level.
- the envelope frequency is calculated in accordance with the vehicle speed, and the carrier frequency (pitch) for reading the sounding data is adjusted in accordance with the envelope frequency.
- the envelope frequency may be calculated as a value such that the envelope frequency increases as the accelerator opening increases, and the corresponding carrier frequency (pitch) may be calculated.
- the envelope frequency can be calculated based on the ambient noise level indicating the ambient noise level so that the envelope frequency increases as the ambient noise level increases.
- the envelope frequency may be calculated based on any one or more of the opening degree and the ambient noise level.
- the first sound signal generator 27a generates an approach notification sound voltage waveform signal by sequentially reading and outputting sound data at a pitch corresponding to the carrier frequency.
- the second sound generation signal generator 27b generates the approach notification sound voltage waveform signal by reading out and outputting sound generation data with a pitch corresponding to the carrier frequency and delayed by a predetermined delay time to be set.
- an approach notification sound voltage waveform signal is generated by reading out and outputting sound generation data at an address to which an address counter value corresponding to a delay time is added.
- the delay time can be set according to the “fluctuation” to be generated, but can be set to, for example, about 20 ms (50 Hz) to 300 ms (3.3 Hz).
- each approach notification sound voltage waveform signal output from the first and second sound signal generators 27a and 27b is mixed by the mixer circuit 24 and then output.
- “fluctuation due to long delay” is added.
- the “fluctuation” effect due to the long delay for example, an echo corresponding to the long delay is applied, and the time for which the echo is applied varies depending on the delay time. Therefore, the desired echo can be obtained based on the delay time setting of the long delay. It is possible to achieve the “fluctuation” effect that has been applied.
- volume and frequency variable are not described here, but these have been described by the method shown in (1) the fluctuation realizing method by changing the volume and the method shown in (2) the fluctuation realizing method by changing the frequency. It can be made variable by such usage.
- the first sound signal generator 27a sequentially reads out sound data at a pitch according to the carrier frequency and outputs it, thereby outputting the approach notification sound voltage waveform. Generate a signal.
- the second sound signal generator 27b also generates an approach notification sound voltage waveform signal by reading out and outputting sound data at a pitch corresponding to the carrier frequency and delayed by a predetermined delay time to be set.
- an approach notification sound voltage waveform signal is generated by reading out and outputting sound generation data at an address to which an address counter value corresponding to a delay time is added.
- the delay time can be set according to the “fluctuation” to be generated, but can be set to about 0.5 ms (2 kHz) to 20 ms (50 Hz), for example.
- each approach notification sound voltage waveform signal output from the first and second sound signal generators 27a and 27b is mixed by the mixer circuit 24 and then output.
- “fluctuation due to a short delay (flanger effect)” is added.
- a “fluctuation” effect due to a short delay for example, a “fluctuation” effect to the extent that a human ear is identified as a synthesized sound or an echo.
- volume and frequency variable are not described here, but these are explained by the method shown in (1) the fluctuation realizing method by changing the volume and (2) the fluctuation realizing method by changing the frequency. It can be made variable by such usage.
- Fluctuation realization method by combination of delay and frequency (pitch) variable Fluctuation realization method by long delay or short delay in the above (3) and (4), and fluctuation realization method by frequency variable shown in (2)
- a “fluctuation” effect can be obtained.
- the delay time is changed according to the envelope frequency calculated from the vehicle speed sensor signal and the corresponding carrier frequency.
- the variable width of the delay time and the variable speed can be adjusted according to the carrier frequency.
- the delay time may be changed according to the carrier frequency.
- each approach notification sound voltage waveform signal output from the first and second sound signal generators 27a and 27b is mixed by the mixer circuit 24 and then output.
- “fluctuation (jet effect)” by setting the delay time according to the carrier frequency is added. In this way, it is possible to obtain a “fluctuation” effect by setting a delay time according to the carrier frequency.
- the first and second sound output voltage waveform signal generators including the first and second sound output generators 27a and 27b and the first and second sound volume changers 26a and 26b, that is, a simple configuration
- the approach notification sound voltage waveform signal output from the microcomputer 21 is controlled to vary the volume, carrier frequency (pitch) variable, long delay, short delay or delay and carrier frequency (pitch).
- the program of the microcomputer 21 can control the “fluctuation” of the approach notification sound. It can be adjusted to the optimum “fluctuation”. Therefore, it is possible to provide a vehicle approach notification sound device that can control the “fluctuation” of the approach notification sound to be optimal for the vehicle in accordance with various situations based on the small volume of pronunciation data.
- the microcomputer 21 uses the DAC 21a to output a control signal, and generates a control signal for changing the sound pressure from the DAC 21a, thereby performing voltage control of the voltage control unit 22.
- the voltage control of the voltage control unit 22 may be performed using a PWM controller.
- the PWM controller when changing the voltage level of the output waveform of the sound output in accordance with the temporal change amount of the value representing the running state such as the vehicle speed or the accelerator opening, for example, the vehicle speed or the accelerator opening Accordingly, the duty ratio for turning on / off the PWM output may be changed and the sampling period of the PWM output may be changed.
- This disclosure includes the following aspects.
- the vehicle approach notification device reads out the sound generation data at a pitch corresponding to a carrier frequency from a memory device that stores the sound generation data of the vehicle approach notification sound, and the first approach notification corresponding to the sound generation data.
- a first sounding output generator for generating a sound voltage waveform signal, and a first adjusting the volume by controlling the voltage level of the first approach notification sound voltage waveform signal generated from the first sounding output generator A first sounding voltage waveform signal generation unit having a volume variable unit, and reading out the sounding data from the memory device at a pitch corresponding to a carrier frequency, and a second approach notification sound voltage waveform signal corresponding to the sounding data.
- a second sound volume voltage waveform signal generation unit having a second volume variable unit that adjusts the sound volume, the first approach notification sound voltage waveform signal that controls the voltage level, and the second approach that controls the voltage level
- a mixer circuit that mixes the notification sound voltage waveform signal, and a current corresponding to the voltage of the mixed approach notification sound voltage waveform signal that flows through the sound generator mounted on the vehicle, so that the vehicle approach notification sound is generated by the sound generator.
- an amplifier that produces the pronunciation of
- the near notification sound voltage is obtained by a simple configuration including the first and second sound output outputs and the first and second sound generation voltage waveform signal generators including the first and second sound volume changers.
- the vehicle approach notification sound device may further include a sensor signal input circuit that inputs the sensor signal from a sensor that generates a sensor signal according to the running state of the vehicle.
- the first sounding voltage waveform signal generation unit calculates an envelope frequency of the vehicle approach notification sound based on the sensor signal input to the sensor signal input circuit, and the first volume variable device based on the envelope frequency
- the volume setting value By setting the volume setting value by controlling the voltage level of the first approach notification sound voltage waveform signal, the volume of the vehicle approach notification sound is raised and lowered along the envelope frequency, Add fluctuations by changing the volume.
- the voltage level of the approach notification sound voltage waveform signal output from the first sounding signal generator is raised or lowered along the envelope frequency, so that a “fluctuation due to volume change (tremolo effect)” is added. . In this way, it is possible to realize a “fluctuation” effect by varying the volume.
- the vehicle approach notification sound device may further include a sensor signal input circuit that inputs the sensor signal from a sensor that generates a sensor signal according to the running state of the vehicle.
- the first sounding voltage waveform signal generation unit calculates an envelope frequency of the approach notification sound based on the sensor signal input to the sensor signal input circuit, sets the carrier frequency based on the envelope frequency, By reading the sounding data by the first sounding output generation unit at a pitch corresponding to the set carrier frequency, fluctuation due to variable carrier frequency is added to the vehicle approach notification sound.
- a state in which “fluctuation due to frequency change” is added can be achieved. In this way, it is possible to realize a “fluctuation” effect by changing the frequency.
- the second sounding voltage waveform signal generation unit provides a predetermined delay time with respect to the sounding data read start data by the first sounding output generation unit, and reads the sounding data from the memory device. You may go. In this case, “fluctuation” can be added to the approach notification sound by providing a predetermined delay time for reading the sounding data in the second sounding voltage waveform signal generation unit.
- the delay time is set to 20 ms to 300 ms, and the first approach notification sound voltage waveform signal whose voltage level is controlled by the mixer circuit and the second approach notification sound voltage waveform signal whose voltage level is controlled are mixed, Fluctuations due to a long delay may be added to the vehicle approach notification sound.
- the “fluctuation” effect due to the long delay is applied, for example, an echo corresponding to the long delay is applied, and the time for which the echo is applied varies depending on the delay time, so the desired echo is applied based on the delay time setting of the long delay.
- the “fluctuation” effect can be realized.
- the delay time is 0.5 ms to 20 ms, and the first approach notification sound voltage waveform signal whose voltage level is controlled by the mixer circuit and the second approach notification sound voltage waveform signal whose voltage level is controlled are mixed.
- a fluctuation due to a short delay may be added to the vehicle approach notification sound.
- the vehicle approach notification device may further include a sensor signal input circuit that inputs the sensor signal from a sensor that generates a sensor signal corresponding to the traveling state of the vehicle.
- the second sounding voltage waveform signal generation unit calculates an envelope frequency of the approach notification sound based on the sensor signal input to the sensor signal input circuit, and sets the delay time based on the envelope frequency.
- a “fluctuation (jet effect)” by setting a delay time according to the carrier frequency is added. In this way, it is possible to obtain a “fluctuation” effect by setting a delay time according to the carrier frequency.
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Abstract
Description
図1は、本実施形態にかかる車両接近通報装置を含む車両接近通報システムの回路ブロック図である。また、図2は、図1に示す車両接近通報システムを機能的に示した機能ブロック図である。これらの図を参照して、本実施形態にかかる車両用接近通報装置を含む車両接近通報システムについて説明する。
音量を可変することにより、発音される接近通報音に「揺らぎ」を付加することができる。例えば、第1発音信号発生器27aから出力される接近通報音電圧波形信号について、車速センサ信号から演算されたエンベロープ周波数に応じて、第1音量可変器26aで音量設定値(電圧レベル)を調整する。すなわち、車速が大きいほどエンベロープ周波数が上げられるようにし、このエンベロープ周波数に対応して音量を上下させることで、発音される接近通報音に対して音量可変による「揺らぎ(エンベロープ)」を付加する。この場合には、第2発音信号発生器27bからは接近通報音電圧波形信号を出力しない。
キャリア周波数、つまり発音データの読み出しの周波数(ピッチ)を可変することにより、発音される接近通報音に「揺らぎ」を付加することができる。例えば、第1発音信号発生器27aから出力される接近通報音電圧波形信号について、第1発音信号発生器27aでの発音データを読み出すキャリア周波数(ピッチ)を車速センサ信号から演算されたエンベロープ周波数に応じて調整する。すなわち、車速が大きいほどエンベロープ周波数が高くなり、それに対応するキャリア周波数が高くなってピッチ(つまりサンプリング周期)が短くなるようにし、このキャリア周波数に対応して読み出しのピッチを制御することで、発音される接近通報音に対して周波数可変による「揺らぎ」を付加する。この場合には、第2発音信号発生器27bからは接近通報音電圧波形信号を出力しない。
第1発音信号発生器27aでは、キャリア周波数に応じたピッチで、発音データを順番に読み出して出力することで接近通報音電圧波形信号を発生させる。一方、第2発音信号発生器27bでは、キャリア周波数に応じたピッチで、設定したい所定のディレイ時間だけ遅れて発音データを読み出して出力することで接近通報音電圧波形信号を発生させる。例えば、ディレイ時間に相当するアドレスカウンタ値を加えたアドレスの発音データを読み出して出力することで接近通報音電圧波形信号を発生させている。ディレイ時間としては、発生させたい「揺らぎ」に応じて設定することができるが、例えば20ms(50Hz)~300ms(3.3Hz)程度とすることができる。
ロングディレイの場合と同様に、第1発音信号発生器27aでは、キャリア周波数に応じたピッチで、発音データを順番に読み出して出力することで接近通報音電圧波形信号を発生させる。第2発音信号発生器27bでも、キャリア周波数に応じたピッチで、設定したい所定のディレイ時間だけ遅れて発音データを読み出して出力することで接近通報音電圧波形信号を発生させる。例えば、ディレイ時間に相当するアドレスカウンタ値を加えたアドレスの発音データを読み出して出力することで接近通報音電圧波形信号を発生させている。ディレイ時間としては、発生させたい「揺らぎ」に応じて設定することができるが、例えば0.5ms(2kHz)~20ms(50Hz)程度とすることができる。
上述した(3)、(4)におけるロングディレイやショートディレイによる揺らぎ実現方法と、(2)に示した周波数可変による揺らぎ実現方法との組み合わせによって、「揺らぎ」効果を得ることもできる。例えば、ディレイ時間を車速センサ信号から演算されたエンベロープ周波数と対応するキャリア周波数に応じて変化させる。また、キャリア周波数に応じてディレイ時間の可変幅や可変する早さを調整することができる。
上記実施形態において、マイコン21では、制御信号の出力を行うのにDAC21aを用い、DAC21aから音圧を変化させるための制御信号を発生させることで電圧制御部22の電圧制御を行うようにしているが、PWM制御器を用いて電圧制御部22の電圧制御を行うようにしても良い。PWM制御器を用いる場合において、車速やアクセル開度などの走行状態を表す値の時間的変化量に則して発音出力の出力波形の電圧レベルを変化させるときには、例えば、車速やアクセル開度に応じてPWM出力のオンオフのデューティ比を変化させると共にPWM出力のサンプリング周期を変化させるようにすれば良い。
Claims (7)
- 車両の接近通報音の発音データを記憶したメモリ装置から前記発音データをキャリア周波数に対応するピッチで読み出すと共に、前記発音データに対応する第一接近通報音電圧波形信号を発生させる第1発音出力発生部(27a)と、前記第1発音出力発生部(27a)から発生させられた前記第一接近通報音電圧波形信号の電圧レベルを制御することで音量を調整する第1音量可変器(26a)と、を有する第1発音電圧波形信号生成部と、
前記メモリ装置から前記発音データをキャリア周波数に対応するピッチで読み出すと共に、前記発音データに対応する第二接近通報音電圧波形信号を発生させる第2発音出力発生部(27b)と、前記第2発音出力発生部(27b)から発生させられた前記第二接近通報音電圧波形信号の電圧レベルを制御することで音量を調整する第2音量可変器(26b)と、を有する第2発音電圧波形信号生成部と、
電圧レベルを制御した前記第一接近通報音電圧波形信号と電圧レベルを制御した前記第二接近通報音電圧波形信号とをミキシングするミキサー回路(24)と、
ミキシングした接近通報音電圧波形信号の電圧と対応する電流を前記車両に搭載された発音体(3)に流すことで、前記発音体(3)にて車両接近通報音の発音を行わせるアンプ(25)とを備えた車両接近通報装置。 - 車両の走行状態に応じたセンサ信号を発生させるセンサ(1)より、前記センサ信号を入力するセンサ信号入力回路(20)をさらに有し、
前記第1発音電圧波形信号生成部は、前記センサ信号入力回路(20)に入力された前記センサ信号に基づいて前記車両接近通報音のエンベロープ周波数を演算し、該エンベロープ周波数に基づいて前記第1音量可変器(26a)による音量設定値を設定して、前記第一接近通報音電圧波形信号の電圧レベルを制御することで、前記車両接近通報音の音量を前記エンベロープ周波数に沿って上下させ、前記車両接近通報音に音量可変による揺らぎを付加する請求項1に記載の車両接近通報装置。 - 車両の走行状態に応じたセンサ信号を発生させるセンサ(1)より、前記センサ信号を入力するセンサ信号入力回路(20)を有し、
前記第1発音電圧波形信号生成部は、前記センサ信号入力回路(20)に入力された前記センサ信号に基づいて前記接近通報音のエンベロープ周波数を演算し、該エンベロープ周波数に基づいて前記キャリア周波数を設定し、該設定されたキャリア周波数に対応するピッチで前記第1発音出力発生部(27a)による前記発音データの読み出しを行うことで、前記車両接近通報音にキャリア周波数可変による揺らぎを付加する請求項1または2に記載の車両接近通報装置。 - 前記第2発音電圧波形信号生成部は、前記第1発音出力発生部(27a)による前記発音データの読み出し開始データに対して所定のディレイ時間を設けて、前記メモリ装置から前記発音データの読み出しを行っている請求項1ないし3のいずれか1つに記載の車両接近通報装置。
- 前記ディレイ時間を20ms~300msとし、前記ミキサー回路(24)による電圧レベルを制御した前記第一接近通報音電圧波形信号と電圧レベルを制御した前記第二接近通報音電圧波形信号のミキシングによって、前記車両接近通報音にロングディレイによる揺らぎを付加する請求項4に記載の車両接近通報装置。
- 前記ディレイ時間を0.5ms~20msとし、前記ミキサー回路(24)による電圧レベルを制御した前記第一接近通報音電圧波形信号と電圧レベルを制御した前記第二接近通報音電圧波形信号のミキシングによって、前記車両接近通報音にショートディレイによる揺らぎを付加する請求項4に記載の車両接近通報装置。
- 車両の走行状態に応じたセンサ信号を発生させるセンサ(1)より、前記センサ信号を入力するセンサ信号入力回路(20)を有し、
前記第2発音電圧波形信号生成部は、前記センサ信号入力回路(20)に入力された前記センサ信号に基づいて前記接近通報音のエンベロープ周波数を演算し、該エンベロープ周波数に基づいて前記ディレイ時間を設定する請求項4ないし6のいずれか1つに記載の車両接近通報装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9815405B2 (en) | 2013-05-16 | 2017-11-14 | Anden Co., Ltd. | Vehicle approach alert device |
US9868323B2 (en) | 2013-05-16 | 2018-01-16 | Anden Co., Ltd. | Vehicle approach alert device |
CN108367709A (zh) * | 2015-12-14 | 2018-08-03 | 安电株式会社 | 车辆接近通报装置 |
WO2020183943A1 (ja) * | 2019-03-13 | 2020-09-17 | アンデン株式会社 | 音声出力装置 |
WO2024195379A1 (ja) * | 2023-03-21 | 2024-09-26 | 株式会社デンソーエレクトロニクス | 発音制御装置 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10371079B2 (en) * | 2016-09-09 | 2019-08-06 | Ford Global Technologies, Llc | Method and system for knock sensor rationality check |
CN108032800B (zh) * | 2017-12-06 | 2020-11-20 | 滁州松泽电器有限公司 | 声音的合成方法、装置及电子设备 |
US10406976B2 (en) * | 2018-01-31 | 2019-09-10 | Ford Global Technologies, Llc | Multi-purpose automotive sound device |
JP7255582B2 (ja) * | 2018-02-26 | 2023-04-11 | 日本電気株式会社 | 危険行為解消システム、装置、方法、及び、プログラム |
JP7286378B2 (ja) * | 2018-12-13 | 2023-06-05 | ラピスセミコンダクタ株式会社 | 音出力装置及び音出力システム |
JP7272131B2 (ja) * | 2019-06-20 | 2023-05-12 | トヨタ自動車株式会社 | 車両用報知音発生システム |
JP7446753B2 (ja) * | 2019-09-30 | 2024-03-11 | ラピスセミコンダクタ株式会社 | 音出力装置、通信コントローラ及び音生成器 |
JP2021102416A (ja) * | 2019-12-25 | 2021-07-15 | 株式会社デンソーエレクトロニクス | 音声出力装置 |
US11458889B1 (en) | 2021-04-23 | 2022-10-04 | Curdy F. Angrand | Vehicle alert system |
US12172575B2 (en) * | 2022-12-22 | 2024-12-24 | Robert Linton | Dynamic combustion engine sound broadcasting device and method of use |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013010465A (ja) * | 2011-06-30 | 2013-01-17 | Anden | 車両接近通報装置 |
WO2013035167A1 (ja) * | 2011-09-07 | 2013-03-14 | 三菱電機株式会社 | 車両接近通報装置、およびそれを備えた電動移動体 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5129004A (en) * | 1984-11-12 | 1992-07-07 | Nissan Motor Company, Limited | Automotive multi-speaker audio system with different timing reproduction of audio sound |
DE19726271C2 (de) * | 1997-06-20 | 2001-07-19 | Forsch Kfz Wesen U Fahrzeugmot | Verfahren und Vorrichtung zur Nachbildung von Maschinengeräuschen |
US7606374B2 (en) | 2003-10-09 | 2009-10-20 | Yamaha Hatsudoki Kabushiki Kaisha | Engine sound synthesizer, motor vehicle and game machine employing the engine sound synthesizer, engine sound synthesizing method, and recording medium containing computer program for engine sound synthesis |
DE102005039944A1 (de) * | 2005-08-24 | 2007-04-19 | Uwe Karsten-Zeitz | Scom (Single Controlled Operation Matrix) |
KR20070102916A (ko) * | 2006-04-17 | 2007-10-22 | 이화영 | 자동차의 다양한 가상 엔진효과음 구현 장치. |
JP2009035195A (ja) * | 2007-08-03 | 2009-02-19 | Toyota Motor Corp | 車両接近告知装置 |
JP2010155507A (ja) * | 2008-12-26 | 2010-07-15 | Yamaha Corp | エンジン回転数算出装置及びエンジン音生成装置 |
US20110010269A1 (en) * | 2009-07-07 | 2011-01-13 | Ballard Claudio R | Vehicle audio system for producing synthetic engine sound |
WO2011132347A1 (en) * | 2010-04-19 | 2011-10-27 | Koyama Kogyo Co., Ltd. | A simulated engine sound generating apparatus |
WO2011148470A1 (ja) * | 2010-05-26 | 2011-12-01 | 三菱電機株式会社 | 擬似音制御装置およびそれを備えた電動移動体 |
WO2012016722A2 (en) * | 2010-08-04 | 2012-02-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus for generating a drive dependent sound and engine driven vehicle |
JP2013052806A (ja) * | 2011-09-05 | 2013-03-21 | Yamaha Motor Co Ltd | 走行連動音発生装置 |
DE102011085168A1 (de) * | 2011-10-25 | 2013-04-25 | Robert Bosch Gmbh | Vorrichtung und Verfahren zum Erzeugen eines Ausgangsgeräuschs eines elektrisch angetriebenen Kraftfahrzeugs |
CN105209297B (zh) | 2013-05-16 | 2017-05-17 | 安电株式会社 | 车辆接近通报装置 |
DE112013007080T5 (de) | 2013-05-16 | 2016-02-11 | Anden Co., Ltd. | Fahrzeugannäherungs-Alarmvorrichtung |
-
2013
- 2013-05-16 CN CN201380076494.5A patent/CN105209296B/zh not_active Expired - Fee Related
- 2013-05-16 DE DE112013007075.8T patent/DE112013007075B4/de not_active Expired - Fee Related
- 2013-05-16 WO PCT/JP2013/003119 patent/WO2014184827A1/ja active Application Filing
- 2013-05-16 US US14/786,563 patent/US9694745B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013010465A (ja) * | 2011-06-30 | 2013-01-17 | Anden | 車両接近通報装置 |
WO2013035167A1 (ja) * | 2011-09-07 | 2013-03-14 | 三菱電機株式会社 | 車両接近通報装置、およびそれを備えた電動移動体 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9815405B2 (en) | 2013-05-16 | 2017-11-14 | Anden Co., Ltd. | Vehicle approach alert device |
US9868323B2 (en) | 2013-05-16 | 2018-01-16 | Anden Co., Ltd. | Vehicle approach alert device |
CN108367709A (zh) * | 2015-12-14 | 2018-08-03 | 安电株式会社 | 车辆接近通报装置 |
CN108367709B (zh) * | 2015-12-14 | 2020-12-01 | 安电株式会社 | 车辆接近通报装置 |
WO2020183943A1 (ja) * | 2019-03-13 | 2020-09-17 | アンデン株式会社 | 音声出力装置 |
WO2024195379A1 (ja) * | 2023-03-21 | 2024-09-26 | 株式会社デンソーエレクトロニクス | 発音制御装置 |
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US20160082882A1 (en) | 2016-03-24 |
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