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WO2018166296A1 - Dispositif de production de son d'avertissement pour véhicule à énergie nouvelle - Google Patents

Dispositif de production de son d'avertissement pour véhicule à énergie nouvelle Download PDF

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Publication number
WO2018166296A1
WO2018166296A1 PCT/CN2018/073744 CN2018073744W WO2018166296A1 WO 2018166296 A1 WO2018166296 A1 WO 2018166296A1 CN 2018073744 W CN2018073744 W CN 2018073744W WO 2018166296 A1 WO2018166296 A1 WO 2018166296A1
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WO
WIPO (PCT)
Prior art keywords
module
signal
mcu
sound
power amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/073744
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English (en)
Chinese (zh)
Inventor
吴鹏
王蕴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JILIN HANGSHENG ELECTRONICS Co Ltd
Original Assignee
JILIN HANGSHENG ELECTRONICS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JILIN HANGSHENG ELECTRONICS Co Ltd filed Critical JILIN HANGSHENG ELECTRONICS Co Ltd
Priority to DE112018000240.3T priority Critical patent/DE112018000240T5/de
Publication of WO2018166296A1 publication Critical patent/WO2018166296A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the invention relates to the technical field of sound alarms, in particular to a warning sound generator of a new energy vehicle.
  • a new energy vehicle is a vehicle with advanced technology, new technology and new structure, which uses unconventional vehicle fuel as a power source or uses conventional vehicle fuel and adopts a new vehicle power device.
  • the new energy vehicle is driven by a new type of engine. The sound it emits is very small and is overwhelmed by environmental noise.
  • the warning sound generator of the new energy vehicle uses a voice chip to complete the introduction of sound files, sound sorting storage, sound playback, sound volume and the like.
  • the voice chip In the process of sound emission, the voice chip is required to participate in the sounding.
  • the voice chip performs the adjustment of the volume and the audio to output the sound, and then the speaker is driven by the power amplifier.
  • the voice chip is expensive, and the hardware cost is increased due to the dependence on the voice chip.
  • one technical problem to be solved by the present invention is to provide a warning sound generator for a new energy vehicle, which can effectively solve the above problems.
  • a warning sound generator for a new energy vehicle comprising: an MCU module, a CAN communication module, a DA module, a power amplifier module, and a speaker; and the MCU module passes the CAN communication module and the new energy vehicle
  • the control device is connected; the MCU module is respectively connected to the DA module and the power amplifier module; the power amplifier module is respectively connected to the DA module and the speaker; and the MCU module generates a PWM signal with a square wave and Sending to the power amplifier module, the PWM signal is used for volume adjustment; the MCU module sends sound data to the DA module, and sends a working time reference signal to the DA module, where the working time reference signal is used Performing audio control; the DA module generates an audio signal based on the sound data and the working time reference signal and transmits the audio signal to the power amplifier module.
  • the method includes: a power module; the power module is respectively connected to the MCU module, the CAN communication module, the DA module, and the power amplifier module.
  • the method further includes: a storage module; the storage module is electrically connected to the MCU module; and the MCU module converts the received sound file into an audio array, and is stored in the storage module.
  • the method further includes: obtaining, by the MCU module, a status signal from a control device of a new energy vehicle by using the CAN communication module, where the status signal includes: a brake signal, an acceleration signal, a motor speed, and a vehicle speed signal; the MCU module is based on The status signal selects a corresponding sound array from the storage module and sends the same to the DA module.
  • the method further includes: an infrared detecting module; the MCU module and the infrared detecting module are electrically connected; the infrared detecting module detects whether a person is around the vehicle and outputs an infrared detecting signal, and the MCU module receives the infrared detecting And generating, according to the infrared detection signal, the PWM signal and the working time reference signal, and selecting a corresponding sound array from the storage module and transmitting the same to the DA module.
  • an infrared detecting module detects whether a person is around the vehicle and outputs an infrared detecting signal
  • the MCU module receives the infrared detecting And generating, according to the infrared detection signal, the PWM signal and the working time reference signal, and selecting a corresponding sound array from the storage module and transmitting the same to the DA module.
  • the method further includes: a GPS module; the GPS module is electrically connected to the MCU module; the GPS module sends a vehicle speed and time signal to the MCU module; an environmental signal acquisition module; the MCU module and the environment The signal acquisition module is electrically connected; the environmental signal acquisition module collects the sound pressure signal of the external environment sound in real time and sends the sound pressure signal to the MCU module.
  • the MCU module receives the speed signal sent by the GPS module in real time; when the vehicle speed meets the alarm threshold, the MCU module obtains the time signal and the location from the GPS module and the environmental signal acquisition module, respectively.
  • the sound pressure signal is generated, and the PWM signal and the working time reference signal are generated according to the time signal and the sound pressure signal, and a corresponding sound array is selected from the storage module and sent to the DA module.
  • the MCU module separately acquires the time signal and the sound pressure signal from the GPS module and the environmental signal acquisition module, and analyzes the time signal and the sound pressure signal;
  • the MCU module adjusts the volume and audio of the speaker playback by adjusting the PWM signal and the working time reference signal.
  • a first RC shaping circuit module is disposed between the MCU module and the power amplifier module; the PWM signal sent by the MCU module is shaped by the first RC shaping circuit module and sent to the The power amplifier module.
  • a second RC shaping circuit module is disposed between the DA module and the power amplifier module, and the audio signal sent by the DA module is shaped by the second RC shaping circuit module and sent to the The power amplifier module.
  • the warning sound generator of the new energy vehicle of the invention transmits the PWM signal to the power amplifier module for volume adjustment, sends the sound data to the DA module to generate an audio signal, and sends the clock reference signal to the DA module for audio control, thereby solving the necessity of relying on Voice chips increase the cost of the system.
  • FIG. 1 is a block diagram showing the structure of an embodiment of a warning sound generator of a new energy vehicle of the present invention
  • FIG. 2 is a block diagram showing another embodiment of a warning sound generator of a new energy vehicle of the present invention.
  • Fig. 3 is a circuit diagram showing an RC shaping circuit module of an embodiment of a warning tone generator of a new energy vehicle of the present invention.
  • the present invention provides a warning sound generator for a new energy vehicle, comprising: an MCU module 11, a CAN communication module 16, a DA module 12, a power amplifier module 13, and a speaker 14.
  • the DA module 12 is a digital-to-analog conversion module.
  • the MCU module 11 is connected to the control device of the new energy vehicle through the CAN communication module 16, and the MCU module 11 is connected to the DA module 12 and the power amplifier module 13, respectively.
  • the power amplifier module 13 is connected to the DA module 12 and the speaker 14, respectively, and the MCU module 11 and the DA module 12 can be connected via an SPI serial bus or the like.
  • the MCU module 11 generates a PWM signal having a square wave and transmits it to the power amplifier module 13, which is used for volume adjustment.
  • the MCU module 11 sends the sound data to the DA module 12, and sends a working time reference signal to the DA module 12.
  • the working time reference signal is used to provide the clock frequency signal to the DA module 12, and the working time reference signal can be a square wave signal for audio. control.
  • the DA module 12 can have a clock input, and the frequency output pin of the MCU module 11 sends a working time reference signal to the clock input.
  • the DA module 12 generates an audio signal based on the sound data and the working time reference signal and transmits it to the power amplifier module 13, and the power amplifier module 13 drives the speaker 14 to play the audio signal.
  • the power module 18 is connected to the MCU module 11, the CAN communication module 16, the DA module 12, the power amplifier module 13, the CAN peripheral module 17, and the like, respectively, to provide power.
  • the warning sound generator of the new energy vehicle in the above embodiment has a volume and audio adjustment function.
  • the power amplifier module 13 includes a power amplifier chip, and the MCU module 11 controls the power volume control pin of the power amplifier chip to control the volume of the alarm sound generator.
  • the volume control mode of the warning tone generator is PWM mode, and the PWM mode is in the power amplifier chip presentation mode is the level of the DC voltage, and the higher the duty ratio, the higher the voltage.
  • the volume adjustment adopts PWM mode to control the analog voltage output of the power output control pin of the power amplifier chip, and the resolution can reach 65536 gear positions.
  • the square wave signal of the PWM signal is generated and generates an approximate DC level through the RC shaping circuit module. Similar to the “potentiometer knob” voltage regulation method, a subdivision voltage of 1/65535 can be generated.
  • the audio adjustment of the warning tone generator is the adjustment of the sound output frequency, that is, the speed at which the sound is played.
  • the clock of the DA module 12 employs an externally input square wave signal, and the MCU module 11 controls the speed of sound playback of the speaker 14 by controlling the frequency of the working time reference signal (square wave signal).
  • the anti-interference ability is improved in the CAN communication hardware system and the design scheme for the possible effective mode is reserved.
  • the MCU module 11 converts the sound file into an audio array and sends it to the DA module 12 for playback.
  • the volume of the playback is controlled by the PWM control pin of the MCU module 11 to control the power amplifier chip, and the played audio signal is output to the DA through the MCU module 11
  • the system clock pin of module 12 is controlled.
  • the warning sound generator of the new energy vehicle in the above embodiment does not use a special voice decoding chip, but uses software to decode the voice file to form a sound array, according to the data corresponding to the sound group, according to a certain time interval, through the CPU
  • the DA pushes the voltage corresponding to the sound group data to the power amplifier module, thereby driving the speaker to emit a corresponding sound.
  • the warning sound generator of the new energy vehicle in the above embodiment solves the problem that the original warning tone generator must rely on the proprietary voice chip and increases the system cost, and the sound output mode adopts the DA conversion mode instead of the traditional PWM mode.
  • the audio uses MUC's programmable square wave control, which can control 65,536 levels, which solves the problem that the original playback adjustment easily causes frequency jumps and frustration.
  • the storage module 15 is electrically connected to the MCU module 11, and the MCU module 11 converts the received sound file into an audio array and stores it in the storage module 15.
  • the MCU module 11 converts the sound file into a WAV format through a sound software, and the sampling rate is 8k or 16k, and the sound file is converted into a corresponding array identifiable by the system. After the array is completed (16bit), the chip is not powered down. in.
  • the storage module 15 or the MCU module 11 sends an array to the DA module 12, and the DA module 12 emits a preset warning tone by outputting a voltage signal corresponding to the sound group.
  • the sound file will form a disordered waveform of multiple harmonics.
  • This harmonic forms a sound corresponding array in a discrete manner according to a sampling rate at a certain time, which is referred to as a sound group.
  • the MCU module 11 converts the sound file into a WAV format through a sound software, and the sampling rate is 8k or 16k, and the sound file is converted into a corresponding sound group.
  • the files formed by the sound group tend to be larger and better.
  • the sampling rate is especially important. If the sampling rate is too high, the array is too large to be easily stored in the system. The sound generated by the sampling rate is too low. After the sound group and the sampling rate are confirmed, the corresponding number of the sound group is completed, and the corresponding correspondence between the sound group data and the voltage signal is completed after the linear coefficient is completed, and then played by the DA function foot of the CPU at a certain time interval.
  • the MCU module 11 acquires a status signal from the control device of the new energy vehicle through the CAN communication module 16, and the status signals include: a brake signal, an acceleration signal, a motor speed, and a vehicle speed signal.
  • the MCU module 11 selects a corresponding sound array from the storage module 15 based on the status signal and transmits it to the DA module 12. For example, selecting an array of sounds corresponding to the sound of the car engine for processing and playback can simulate different sounds of the engine when the car is at 40 km and 80 km/h.
  • the MCU module 11 and the infrared detecting module 21 are electrically connected.
  • the infrared detecting module 21 detects whether there is a person around the vehicle and outputs an infrared detecting signal, and the MCU module 11 receives the infrared detecting signal and generates a PWM signal and a working time reference signal according to the infrared detecting signal, and selects a corresponding sound array from the storage module and sends the same to the sound module.
  • DA module 12 12.
  • the front of the vehicle is equipped with an infrared detection module, and the infrared detection module has an infrared probe interface.
  • the detection head based on the pyroelectric sensor can detect whether there is a pedestrian passing by detecting the strength of the signal of the human body characteristic infrared band 10um, and output infrared detection. signal.
  • the pyroelectric will generate a corresponding voltage signal, that is, an infrared detecting signal, and the voltage signal is denoised and purified by the filtering circuit, and sent to the AD collecting part to collect the pyroelectric power.
  • the incoming analog signal is converted into a digital signal, and the digital signal enters the MCU module 11, thereby judging that a pedestrian appears in front and the control emits a warning tone.
  • the GPS module 22 is electrically coupled to the MCU module 11, and the GPS module 22 transmits vehicle speed and time signals to the MCU module 11.
  • the MCU module 11 and the environmental signal acquisition module 23 are electrically connected, and the ambient signal acquisition module 23 collects the sound pressure signal of the external environment sound in real time and sends it to the MCU module.
  • the MCU module 11 receives the speed signal sent by the GPS module 22 in real time. When the vehicle speed meets the alarm threshold, the MCU module 11 acquires the time signal and the sound pressure signal from the GPS module 22 and the environmental signal acquisition module 23, respectively, and generates the time signal and the sound pressure signal according to the time signal and the sound pressure signal.
  • the PWM signal and the working time reference signal are selected from the storage module 15 and sent to the DA module 12.
  • the MCU module 11 acquires a time signal and a sound pressure signal from the GPS module 22 and the environmental signal acquisition module 23, respectively, and analyzes the time signal and the sound pressure signal. When it is judged that the volume needs to be lowered, the MCU module 11 adjusts the volume and audio played by the speaker 14 by adjusting the PWM signal and the working time reference signal.
  • the MCU module 11 can judge whether the surrounding sound is noisy by the sound pressure signal of the external environment sound. If the surrounding noise is high or the decibel is high, the volume is increased. If the surrounding is very quiet or the decibel is small, the volume is reduced, and the disturbance can be avoided. .
  • the MCU module 11 can monitor the sound pressure level of the environment in real time, and determine the sound pressure level to be emitted by the new energy vehicle pedestrian sound warning device according to the surrounding sound pressure level, and then emit a small sound when the average sound pressure level is small. The pressure value can complete the pedestrian warning function.
  • the MCU module 11 can avoid the pedestrian warning being issued passively, and control the playing volume according to the dynamic pressure feedback of the environment in which the vehicle is traveling. For example, the noise can be appropriately increased at a noisy intersection, and the quiet cell can be appropriately adjusted at night. Low volume, equipped with infrared detection to detect the presence of pedestrians, if a pedestrian is detected, a warning tone is sounded, otherwise a warning tone is stopped.
  • the MCU module 11 analyzes the received time signal and the external noise signal. For example, whether the noise is large or small at night or during the day, the volume of the playback is determined according to time and external noise.
  • the MCU module 11 receives the speed signal sent by the GPS module 22 in real time.
  • the MCU module 11 respectively The GPS module 22 and the environmental signal acquisition module 23 acquire time information and external noise information, and determine the volume and audio of the played sound based on the time information and the external noise information.
  • the volume, audio, and the like of the played sound are lowered.
  • the MC33901 series chip is used in the CAN communication module 16.
  • the MC33901 series chip is the latest CAN chip from Freescale. Anti-common mode interference circuit and high frequency filtering circuit are adopted in the peripheral circuit of the chip. The use of the latest chips in the CAN communication module 16 removes the increased cost burden of common mode inductors.
  • Freescale's MC33901 family of chips is a cost-effective transceiver designed for standard CAN high-speed applications for converting digital protocol information into analog CAN communications. It provides built-in transceiver explicit timeout for automotive applications and a physical interface to the MCU. The CAN protocol controller and the physical double line of the CAN bus.
  • a first RC shaping circuit module is disposed between the MCU module 11 and the power amplifier module 13.
  • the PWM signal sent by the MCU module 11 is shaped by the first RC shaping circuit module and sent to the power amplifier module 13.
  • a second RC shaping circuit module is disposed between the DA module 12 and the power amplifier module 13.
  • the audio signal sent by the DA module 12 is shaped by the second RC shaping circuit module and sent to the power amplifier module 13.
  • the circuits of the first RC shaping circuit module and the first RC shaping circuit module may be the same, for example, both are RC shaping circuits as shown in FIG.
  • the pedestrian voice alarm device of the new energy vehicle transmits the sound signal to the DA module by transmitting the PWM signal to the power amplifier module, and sends the clock reference signal to the DA module for audio control, thereby solving the necessity of relying on the voice.
  • the chip increases the system cost problem, strengthens the anti-interference ability in the CAN communication process, and the volume and tone can be adjusted in real time according to the state of the car, the warning effect is good, and the sound pollution to the external environment can be reduced.
  • the methods and systems of the present invention may be implemented in a number of ways.
  • the methods and systems of the present invention can be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware.
  • the above-described sequence of steps for the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless otherwise specifically stated.
  • the invention may also be embodied as a program recorded in a recording medium, the program comprising machine readable instructions for implementing the method according to the invention.
  • the invention also covers a recording medium storing a program for performing the method according to the invention.
  • a fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), or It is understood as: non-detachable fixed joints (such as riveting, welding), of course, the mutual fixed connection can also be replaced by a one-piece structure (for example, manufactured by integral casting process) (except that the integral forming process is obviously not available).
  • any one of the above-disclosed embodiments of the present invention for indicating a positional relationship or shape include a state or shape similar to, similar to, or similar to each other unless otherwise stated.
  • Any of the components provided by the present invention may be assembled from a plurality of separate components or may be a separate component manufactured by an integral forming process.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

L'invention concerne un dispositif de production de son d'avertissement pour un véhicule à énergie nouvelle, comprenant un module MCU (11), un module de communication CAN (16), un module DA (12), un module amplificateur de puissance (13) et un haut-parleur (14). Le module MCU (11) produit un signal PWM ayant une onde carrée et envoie le signal PWM au module amplificateur de puissance (13) pour un réglage de volume. Le module MCU (11) envoie des données sonores au module DA (12) et envoie un signal de référence de temps de fonctionnement au module DA (12) pour une commande audio. Le module DA (12) produit un signal audio en fonction des données sonores et du signal de référence de temps de fonctionnement, et envoie le signal audio au module amplificateur de puissance (13). Le dispositif de production de son d'avertissement pour un véhicule à énergie nouvelle résout le problème d'augmentation des coûts du système en raison de la dépendance nécessaire envers une puce vocale, et améliore la capacité anti-interférences dans un processus de communication CAN. De plus, le volume et la tonalité peuvent être ajustés en temps réel en fonction de l'état du véhicule, l'effet d'avertissement est bon, et la pollution sonore vers l'environnement extérieur peut être réduite.
PCT/CN2018/073744 2017-03-16 2018-01-23 Dispositif de production de son d'avertissement pour véhicule à énergie nouvelle Ceased WO2018166296A1 (fr)

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DE112018000240.3T DE112018000240T5 (de) 2017-03-16 2018-01-23 Warntonerzeuger für ein Alternativkraftstoff-Fahrzeug

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CN201710155537.9 2017-03-16
CN201710155537.9A CN107054210A (zh) 2017-03-16 2017-03-16 一种新能源汽车的警示音发生器

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CN114523900A (zh) * 2022-01-06 2022-05-24 浙江零跑科技股份有限公司 一种集成行人警示音与引擎声浪功能的控制系统及方法
CN117896654A (zh) * 2024-03-11 2024-04-16 南京达道电子科技有限公司 一种chime音效生成方法及控制系统

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CN107054210A (zh) * 2017-03-16 2017-08-18 吉林航盛电子有限公司 一种新能源汽车的警示音发生器
CN107995561B (zh) * 2017-12-28 2024-03-01 重庆德科电子仪表有限公司 车载仪表音频控制系统及控制方法
CN109017296A (zh) * 2018-06-08 2018-12-18 曲阜天博汽车电器有限公司 新能源汽车加速踏板提示音系统
CN112356772A (zh) * 2020-11-19 2021-02-12 奇瑞商用车（安徽）有限公司 一种汽车行人提示装置及其控制方法

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CN114523900A (zh) * 2022-01-06 2022-05-24 浙江零跑科技股份有限公司 一种集成行人警示音与引擎声浪功能的控制系统及方法
CN117896654A (zh) * 2024-03-11 2024-04-16 南京达道电子科技有限公司 一种chime音效生成方法及控制系统
CN117896654B (zh) * 2024-03-11 2024-05-17 南京达道电子科技有限公司 一种chime音效生成方法及控制系统

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