CN105383376A - Pedestrian sound warning device, based on environmental sound feedback, of new energy vehicle - Google Patents
Pedestrian sound warning device, based on environmental sound feedback, of new energy vehicle Download PDFInfo
- Publication number
- CN105383376A CN105383376A CN201510878457.7A CN201510878457A CN105383376A CN 105383376 A CN105383376 A CN 105383376A CN 201510878457 A CN201510878457 A CN 201510878457A CN 105383376 A CN105383376 A CN 105383376A
- Authority
- CN
- China
- Prior art keywords
- module
- resistance
- sound
- signal
- main control
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Circuit For Audible Band Transducer (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention discloses a pedestrian sound warning device, based on environmental sound feedback, of a new energy vehicle. The pedestrian sound warning device comprises a main control module (21), a voice chip module (22), a power amplifier module (23), an environmental sound signal acquiring module (26) and a loudspeaker (27), wherein the main control module (21) is used for sending a play instruction to the voice chip module (22); the voice chip module (22) is used for sending a sound signal to the power amplifier module (23); the power amplifier module (23) is used for driving the loudspeaker (27) to play the sound signal; the environmental sound signal acquiring module (26) is used for sending a sound pressure signal of the environmental sound to the main control module (21); the main control module (21) is used for determining the volume of the sound signal to be played according to the sound pressure signal and controlling the output power of the power amplifier module (23) based on the volume. The pedestrian sound warning device, based on environmental sound feedback, of the new energy vehicle is capable of determining the play volume according to the environmental sound and solving the problems that large sound in night disturbs residents, plosive sound is generated when the machine is started and interruption is caused by un-smoothness of volume changes.
Description
Technical field
The present invention relates to audible alarm technical field, particularly relate to a kind of new-energy automobile pedestrian sound alarming device based on ambient sound feedback.
Background technology
Modern society, automobile has become requisite instrument in people's life, and private car and bus facilitate the trip of people, and automobile is replacing the vehicle that bicycle becomes important in people's life.In recent years, along with the day by day enhancing of global air pollution, various countries more and more pay attention to protection and the air-polluting prevention and processing of environment, and the discharge of vehicle exhaust is considered to one of air-polluting main source.New-energy automobile refers to and adopts unconventional vehicle fuel as power resources or use conventional vehicle fuel, employing novel on-vehicle engine installation, and the know-why of formation is advanced, the automobile with up-to-date technology, new construction.Along with the rise of new-energy automobile, relative technology is also in development gradually.New-energy automobile adopts new work engine to drive, the sound that it sends is very small, and flood by environmental noise, automobile is caused to be in one " mute state " like this, namely there is sound in the driving process of new-energy automobile less, not easily found by pedestrian, easily cause the problem of traffic accident, and, as long as long as automobile just starts sounding always, and the loudness of sounding is that fixing daytime and evening are without any difference, same loudness can play pedestrian's warning function by day, can become exactly in the more quiet situation of loudness environment that night is same and disturb residents.
Summary of the invention
In view of this, the technical matters that the present invention will solve is to provide a kind of new-energy automobile pedestrian sound alarming device based on ambient sound feedback, can effectively solve the above problems.
Based on a new-energy automobile pedestrian sound alarming device for ambient sound feedback, comprising: main control module, speech chip module, power amplifier module and environmental sound signal acquisition module; Described main control module sends play instruction to described speech chip module, and described speech chip module sends aud. snl. to described power amplifier module, drives loud speaker to play described aud. snl. by described power amplifier module; The sound pressure signal of external environmental sounds is sent to described main control module by described environmental sound signal acquisition module, described main control module determines according to described sound pressure signal the volume playing described aud. snl., and controls the horsepower output of described power amplifier module based on described volume.
According to one embodiment of present invention, further, also comprise: CAN transceiver module; Described main control module is connected with the control setup of new-energy automobile by described CAN transceiver module, the status signal that the control setup receiving new-energy automobile sends, and comprising: motor speed and vehicle speed signal; Described main control module generates travelling data based on described status signal, and described travelling data is sent to described speech chip module, and described speech chip module generates car engine aud. snl. based on described travelling data.
According to one embodiment of present invention, further, comprising: anti-plosive circuit module; Described anti-plosive circuit module comprises: diode, the first resistance, the second resistance, NPN type triode, first have polar capacitor, the 3rd resistance, the 4th resistance; One end ground connection of described 4th resistance, the other end is connected with the emitter of described NPN type triode; Described first has polar capacitor and the 3rd resistor coupled in parallel, forms the first electronic circuit; One end of described first resistance is connected with one end of described second resistance, forms the first point of connection; One end of described diode is connected with supply module or power amplifier module, and the other end of described diode is connected with described first point of connection; The other end of described second resistance is connected with the collecting electrode of described NPN type triode; One end of described first electronic circuit is connected with the other end of described first resistance, and this point of connection is connected with the base stage of described NPN type triode; Second end of described first electronic circuit is connected to the connection line of described 4th resistance for ground connection, one end of first current output line is connected on the connection line between described 4th resistance and the emitter of described NPN type triode, and the other end of described first current output line is connected with described loud speaker; Wherein, electric current is entered by one end of described diode, by after described first resistance current limliting for described first being had polar capacitor to charge, now described NPN type triode presents high-impedance state, when described first has the voltage of polar capacitor to reach threshold value, described NPN type triode enters conducting state.
According to one embodiment of present invention, further, comprising: volume control circuit module and RC shaping circuit module; Described in described master control module controls, volume control circuit CMOS macro cell has the pwm signal of square wave, and described pwm signal is sent to described power amplifier module after carrying out shaping by described RC shaping circuit module, carries out the adjustment of volume.
According to one embodiment of present invention, further, described RC shaping circuit module comprises: the 5th resistance, the 6th resistance, the second polarity free capacitor, the 3rd polarity free capacitor; Described 5th resistance is connected with described second polarity free capacitor, one end of described 5th resistance and described volume control circuit model calling, one end ground connection of described second polarity free capacitor; Described 6th resistance and the series connection of the 3rd polarity free capacitor, one end of described 6th resistance is connected on the connection line between described 5th resistance and described second polarity free capacitor, one end ground connection of described 3rd polarity free capacitor; One end of second output line is connected on the connection line between described 6th resistance and the 3rd polarity free capacitor, and the other end is connected with described power amplifier module.
According to one embodiment of present invention, further, also comprise: digital filter; The sound pressure signal of described environmental sound signal acquisition module Real-time Collection external environmental sounds is also sent to described main control module; Described sound pressure signal is sent in described digital filter and periodically samples by described main control module, and quantize each sample and encode to generate digital signal, described digital signal is converted to analog signal, this analog signal is processed and obtains sound pressure information.
According to one embodiment of present invention, further, described main control module monitors the control pin BUSY of described speech chip module, judges the time of the audio files that current described speech chip module is play; When reaching default time threshold the excess time judging that described audio files is play, then described master control module controls sends the control command playing next audio files to described speech chip module.
According to one embodiment of present invention, further, described environmental sound signal acquisition module comprises: amplifier of microphone MAX9812L, the 4th electric capacity, the 5th electric capacity and the 7th resistance; The signal that Mike collects is connected respectively by the IN pin of described 4th electric capacity, described 7th resistance and described amplifier of microphone MAX9812L, BIAS pin by incoming line, and wherein, IN pin is signal input pin, and BIAS pin is voltage compensation pin; The SHND pin of described amplifier of microphone MAX9812L is by described 5th capacity earth, and the connection line between SHND pin and described 5th electric capacity introduces voltage, the GND pin ground connection of described amplifier of microphone MAX9812L, the VCC pin of described amplifier of microphone MAX9812L accesses described voltage, and the OUT pin of described amplifier of microphone MAX9812L exports sends out the signal greatly to described main control module.
According to one embodiment of present invention, further, described main control module is connected by SPI universal serial bus with described speech chip module.
According to one embodiment of present invention, further, described speech chip module comprises: speech chip ISD2130; In the connection line of supply module and described speech chip module, described power amplifier module, pizo-resistance is set.
New-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention, adopt ambient sound as the reference conditions sending caution sound, hardware circuit array mode is adopted to solve the plosive powered on, complete the adjustment to power amplifier chips volume, switched by pre-recorded sound and need the time, the time switching this record in advance at sound assigns sound play command, and then solution sound switches problem out of stock.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the electrical block diagram of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention;
Fig. 2 is the workflow schematic diagram of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention;
Fig. 3 is the anti-plosive circuit diagram of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention;
Fig. 4 is the PWM volume shaping circuit schematic diagram of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention;
Fig. 5 is the Mike's amplifying circuit schematic diagram in the environmental sound signal acquisition module of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention;
Fig. 6 is the process schematic diagram of the digital filter of an embodiment of the new-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with figure and embodiment, many-sided description is carried out to technical scheme of the present invention.
" first ", " second " hereinafter etc. distinguish on describing, not other special implications.
As shown in Figure 1, 2, the invention provides a kind of new-energy automobile pedestrian sound alarming device based on ambient sound feedback, comprising: main control module 21, speech chip module 22, power amplifier module 23 and environmental sound signal acquisition module 26.Main control module 21 sends play instruction to speech chip module 22, and speech chip module 22 sends aud. snl. to power amplifier module 23, drives loud speaker 27 to play sound signal by power amplifier module 23.
Main control module can be implemented as microprocessor, micro controller system, single board computer (SBC) etc.Main control module 21 is connected by SPI universal serial bus etc. with speech chip module 22.In supply module 24 with the connection line of speech chip module, power amplifier module, pizo-resistance is set.
The sound pressure signal of external environmental sounds is sent to main control module 21 by environmental sound signal acquisition module 26, and main control module 21 is determined to play sound according to sound pressure signal the volume of signal, and based on the horsepower output of volume control power amplifier module 23.Can judge that whether the sound of periphery is noisy by the sound pressure signal of external environmental sounds, if periphery is noisy or decibel is very high, VOLUME UP, if periphery is very quiet or decibel is very little, reduces volume, can generations such as disturbing residents be avoided.
Can the sound pressure level of Real-Time Monitoring environment, the acoustic pressure size that new-energy automobile pedestrian sound alarming device itself will send is determined according to the sound pressure level of surrounding, and then during acoustic pressure average level around less, send less sound pressure level and just can complete pedestrian's warning function.
In one embodiment, main control module 21 is connected with the control setup 31 of new-energy automobile by CAN transceiver module 25, the status signal that the control setup 31 receiving new-energy automobile sends, and comprising: motor speed and vehicle speed signal etc.Main control module 21 generates travelling data based on status signal, and travelling data is sent to speech chip module 22, speech chip module 22 generates car engine aud. snl. based on travelling data, such as can simulated automotive 40 kilometers, 80 kilometers of speed per hours time the different sound of driving engine.
In one embodiment, anti-plosive circuit module is set in alarming device.As shown in Figure 3, anti-plosive circuit module comprises: diode 1, first resistance 2, second resistance 3, NPN type triode 4, first have polar capacitor 5, the 3rd resistance 6, the 4th resistance 7.One end ground connection of the 4th resistance 7, the other end is connected with the emitter of NPN type triode 4.First has polar capacitor 5 and the parallel connection of the 3rd resistance 6, forms the first electronic circuit.One end of first resistance 2 is connected with one end of the second resistance 3, forms the first point of connection.
One end of diode 1 is connected with supply module or power amplifier module 23, and the other end of diode 1 is connected with the first point of connection.The other end of the second resistance 3 is connected with the collecting electrode of NPN type triode 4.One end of first electronic circuit is connected with the other end of the first resistance 2, and this point of connection is connected with the base stage of NPN type triode 4.
Second end of the first electronic circuit is connected to the connection line of the 4th resistance 7 for ground connection, one end of first current output line is connected on the connection line between the 4th resistance 7 and the emitter of NPN type triode 4, and the other end of the first current output line is connected with loud speaker.Wherein, electric current is entered by one end of diode 1, by after the first resistance 2 current limliting for having polar capacitor 5 to charge to first, now NPN type triode 4 presents high-impedance state, when first has the voltage of polar capacitor 5 to reach threshold value, NPN type triode 4 enters conducting state.
In one embodiment, the pedestrian of new-energy automobile warning is that the height meeting vehicle body state and sound status suits, and often because start can to loud speaker impulse singla, which results in can to the instantaneous plosive of loud speaker one, influential system quality.
Start anti-plosive circuit module, in the distorsion of elimination loud speaker, adopt hardware circuit to postpone and power supply electrifying immediate leakage circuit, have employed the impact on system of diode, high resistant electric capacity, aerotron combinational circuit suppression booting moment voltage.System power supply is powered on by control POWER pin, and by charging to 5 after 2 current limlitings, now 4 present high-impedance state, and Remote presents low level.When the voltage charged reaches 0.7 volt, 4 enter conducting, and 3,7 pairs of POWER voltages carry out dividing potential drop.The Pwer voltage that Remote voltage presents 99/100 is rendered as high level.
In one embodiment, volume control circuit module and RC shaping circuit module is provided with in alarming device.As shown in Figure 4, master control module controls volume control circuit CMOS macro cell has the pwm signal of square wave, and pwm signal is sent to power amplifier module after carrying out shaping by RC shaping circuit module, carries out the adjustment of volume.
For the adjustment of the volume of sound, the mode of PWM mode composition algorithm can be adopted to regulate, relate to the treatment circuit that PWM converts mean direct voltage to.Volume adjusting adopts PWM mode to control to the power stage of power amplifier chips the control that pin carries out analog voltage output, resolution can reach 65536 gears, an approximate DC level is produced by RC shaping circuit module after the square-wave signal of the signal of PWM sends, be similar to " potentiometer knob " voltage regulation mode, produce the segmentation voltage of 1/65535.
In one embodiment, RC shaping circuit module comprises: the 5th resistance 8, the 6th resistance 9, second polarity free capacitor 10, the 3rd polarity free capacitor 11.5th resistance 8 is connected with the second polarity free capacitor 10, one end of the 5th resistance 8 and volume control circuit model calling, one end ground connection of the second polarity free capacitor 10.
6th resistance 9 and the 3rd polarity free capacitor 11 are connected, and one end of the 6th resistance 9 is connected on the connection line between the 5th resistance 8 and the second polarity free capacitor 10, one end ground connection of the 3rd polarity free capacitor 11; One end of second output line is connected on the connection line between the 6th resistance 9 and the 3rd polarity free capacitor 11, and the other end is connected with power amplifier module.
In one embodiment, in alarming device, digital filter is set.The sound pressure signal of environmental sound signal acquisition module 26 Real-time Collection external environmental sounds is also sent to main control module 21.Sound pressure signal is sent in digital filter and periodically samples by main control module 21, and quantizes each sample and encode to generate digital signal, digital signal is converted to analog signal, processes and obtain sound pressure information to this analog signal.
Add the circuit being carried out sound intensity collection by Mike or microphone, the AD that the voltage collected is passed to master control set (microprocessor) holds inside to carry out digital filter, obtain the voltage of the acoustic pressure of set specific frequency signal, control the sound pressure level that will send based on this magnitude of voltage.
The AD port accepts of master control set (microprocessor) is to the sound field magnitude of voltage of external environment condition, because the acoustic pressure of environmental noise all concentrates on a certain characteristic frequency mostly, digital filtering algorithm is carried out by master control set (microprocessor) inside, or independently digital filter is set, using the sound field of the sound of characteristic frequency as feedback reference voltage, control the size of the acoustic pressure that will send according to magnitude of voltage.
As shown in Figure 6; the acoustic pressure of environment is amplified into the AD thief hatch of master control set (microprocessor) by Mike or microphone; digital filter can be sent to; the implementation procedure of digital filter is normally the analog signal figure of input; namely the analog signal of input is periodically sampled; and each sample is quantized and encodes, be i.e. mould/number (A/D) conversion; The digital signal exported from A/D carries out prespecified process, conversion, and this is the core of whole filtering, usually adopts existing multiple filtering algorithm.The digital signal that treater exports is converted to analog signal again, and employing D/A (D/A) is converted to the analog signal through digital filter.
In one embodiment, select the digital filter of bandpass-type, observe to cook up after frequency spectrum by oscp and concrete need frequency limit, obtain the frequency limit needed, then cook up the concrete filter model of employing according to frequency limit by matlab software simulation, finally the digital filter algorithm that matlab determines is realized on CPU or other hardware, such as CPLD etc., generate digital filter.
An embodiment, speech chip module 22 comprises: speech chip ISD2130 etc.Main control module 21 monitors the control pin BUSY of speech chip module 22.Judge the time of the audio files that current speech chip module is play.When reaching default time threshold the excess time judging that audio files is play, then main control module 21 controls to send to speech chip module 22 control command playing next audio files.
The control pin BUSY of speech chip ISD2130 is monitored, carrys out by oscp pattern the time that sound recognition switches, shift to an earlier date this time when carrying out sound and switching and assign play command, before last time, sound did not stop, namely just assigning play command once.Complete sound to switch without out of stock.Such as, the broadcasting of sound adopts a sound to carry out loop play, and when carrying out sound and switch, sound can occur out of stock, and what adopt here is excite sound switching command according to the time advance preset.
To sound switching command by advance playing chip to sound, instead of waiting system finish playing after just perform sound switching command, avoid because order to perform the sound switching that time delay brings out of stock.Such as, when sound is play, to be play from monitoring BUSY the interval having more than 20 milliseconds times not grade to low level to last sound by high level, this interval is the major cause causing sound out of stock.Time required for recording voice switches, this time is Millisecond, after recording this time, this time is set to X and writes in the EEPROM of CPU and preserve.When handover is needed, before only needing to stop according to the broadcasting of audio files, X millisecond assigns the play command of next sound in advance.
In one embodiment, as shown in Figure 5, environmental sound signal acquisition module comprises: amplifier of microphone MAX9812LM1, the 4th electric capacity 16, the 5th electric capacity 17 and the 7th resistance 18.The signal that Mike 15 collects is connected respectively by the IN pin of the 4th electric capacity 16, the 7th resistance 18 and amplifier of microphone MAX9812L, BIAS pin by incoming line, and wherein, IN pin is signal input pin, and BIAS pin is voltage compensation pin.
The SHND pin of amplifier of microphone MAX9812L is by the 5th electric capacity 17 ground connection, and the connection line between SHND pin and the 5th electric capacity 17 introduces voltage, the GND pin ground connection of amplifier of microphone MAX9812L, the VCC pin access voltage of amplifier of microphone MAX9812L, the OUT pin of amplifier of microphone MAX9812L exports sends out the signal greatly to main control module 21.Main control module 21 can obtain the magnitude of voltage of the sound of about 1000Hz frequency, feeds back the sound pressure level arranging and send caution sound.
New-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention, hardware circuit array mode completing circuit delayed is adopted to solve the plosive powered on, volume adjusting adopts SCM PWM output to complete the adjustment to power amplifier chips volume in conjunction with shaping circuit, pre-recorded sound switches needs the time, this time is written in the EEPROM of CPU, the time switching this record in advance at sound assigns sound play command, and then solution sound switches problem out of stock.Adopt the voltage of the sound of characteristic frequency as feedback, as the reference conditions sending caution sound acoustic pressure.
New-energy automobile pedestrian sound alarming device based on ambient sound feedback of the present invention, has following beneficial effect:
1, solve voice system start shooting time have plosive problem;
2, to solve in audio frequency output scheme volume adjusting to rely on and to send and amendment register just can obtain volume amendment, and volume amendment is unsmooth problem out of stock;
3, the out of stock switching problem of the relative low side speech play software of employing in sound handoff procedure is solved;
4, the problem that the sound solving night disturbs residents more greatly.
Method and system of the present invention may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method and system of the present invention.Said sequence for the step of method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values with casehistory technical scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
Simultaneously, if the invention described above discloses or relate to parts or the framing member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use foundry technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent component part, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (10)
1., based on a new-energy automobile pedestrian sound alarming device for ambient sound feedback, it is characterized in that, comprising:
Main control module (21), speech chip module (22), power amplifier module (23) and environmental sound signal acquisition module (26); Described main control module (21) sends play instruction to described speech chip module (22), described speech chip module (22) sends aud. snl. to described power amplifier module (23), drives loud speaker (27) to play described aud. snl. by described power amplifier module (23); The sound pressure signal of external environmental sounds is sent to described main control module (21) by described environmental sound signal acquisition module (26), described main control module (21) determines according to described sound pressure signal the volume playing described aud. snl., and controls the horsepower output of described power amplifier module (23) based on described volume.
2. alarming device as claimed in claim 1, is characterized in that:
Also comprise: CAN transceiver module (25);
Described main control module (21) is connected with the control setup of new-energy automobile by described CAN transceiver module (25), the status signal that the control setup receiving new-energy automobile sends, and comprising: motor speed and vehicle speed signal; Described main control module (21) generates travelling data based on described status signal, and described travelling data is sent to described speech chip module (22), and described speech chip module (22) generates car engine aud. snl. based on described travelling data.
3. alarming device as claimed in claim 2, is characterized in that:
Comprise: anti-plosive circuit module; Described anti-plosive circuit module comprises: diode (1), the first resistance (2), the second resistance (3), NPN type triode (4), first have polar capacitor (5), the 3rd resistance (6), the 4th resistance (7);
One end ground connection of described 4th resistance (7), the other end is connected with the emitter of described NPN type triode (4); Described first has polar capacitor (5) and the parallel connection of the 3rd resistance (6), forms the first electronic circuit; One end of described first resistance (2) is connected with one end of described second resistance (3), forms the first point of connection; One end of described diode (1) is connected with supply module or power amplifier module (23), and the other end of described diode (1) is connected with described first point of connection; The other end of described second resistance (3) is connected with the collecting electrode of described NPN type triode (4); One end of described first electronic circuit is connected with the other end of described first resistance (2), and this point of connection is connected with the base stage of described NPN type triode (4); Second end of described first electronic circuit is connected to the connection line of described 4th resistance (7) for ground connection, one end of first current output line is connected on the connection line between described 4th resistance (7) and the emitter of described NPN type triode (4), and the other end of described first current output line is connected with described loud speaker;
Wherein, electric current is entered by the one end of described diode (1), by after described first resistance (2) current limliting for described first being had polar capacitor (5) to charge, now described NPN type triode (4) presents high-impedance state, when described first has the voltage of polar capacitor (5) to reach threshold value, described NPN type triode (4) enters conducting state.
4. alarming device as claimed in claim 3, is characterized in that:
Comprise: volume control circuit module and RC shaping circuit module;
Described in described master control module controls, volume control circuit CMOS macro cell has the pwm signal of square wave, and described pwm signal is sent to described power amplifier module after carrying out shaping by described RC shaping circuit module, carries out the adjustment of volume.
5. alarming device as claimed in claim 4, is characterized in that:
Described RC shaping circuit module comprises: the 5th resistance (8), the 6th resistance (9), the second polarity free capacitor (10), the 3rd polarity free capacitor (11);
Described 5th resistance (8) is connected with described second polarity free capacitor (10), one end of described 5th resistance (8) and described volume control circuit model calling, one end ground connection of described second polarity free capacitor (10);
Described 6th resistance (9) and the series connection of the 3rd polarity free capacitor (11), one end of described 6th resistance (9) is connected on the connection line between described 5th resistance (8) and described second polarity free capacitor (10), one end ground connection of described 3rd polarity free capacitor (11); One end of second output line is connected on the connection line between described 6th resistance (9) and the 3rd polarity free capacitor (11), and the other end is connected with described power amplifier module.
6. alarming device as claimed in claim 2, is characterized in that:
Also comprise: digital filter;
The sound pressure signal of described environmental sound signal acquisition module Real-time Collection external environmental sounds is also sent to described main control module;
Described sound pressure signal is sent in described digital filter and periodically samples by described main control module, and quantize each sample and encode to generate digital signal, described digital signal is converted to analog signal, this analog signal is processed and obtains sound pressure information.
7. alarming device as claimed in claim 6, is characterized in that:
Described main control module monitors the control pin BUSY of described speech chip module, judges the time of the audio files that current described speech chip module is play; When reaching default time threshold the excess time judging that described audio files is play, then described master control module controls sends the control command playing next audio files to described speech chip module.
8. alarming device as claimed in claim 1, is characterized in that:
Described environmental sound signal acquisition module comprises: amplifier of microphone MAX9812L(M1), the 4th electric capacity (16), the 5th electric capacity (17) and the 7th resistance (18);
The signal that Mike (15) collects is connected respectively by the IN pin of described 4th electric capacity (16), described 7th resistance (18) and described amplifier of microphone MAX9812L, BIAS pin by incoming line, wherein, IN pin is signal input pin, and BIAS pin is voltage compensation pin; The SHND pin of described amplifier of microphone MAX9812L is by described 5th electric capacity (17) ground connection, and the connection line between SHND pin and described 5th electric capacity (17) introduces voltage, the GND pin ground connection of described amplifier of microphone MAX9812L, the VCC pin of described amplifier of microphone MAX9812L accesses described voltage, and the OUT pin of described amplifier of microphone MAX9812L exports sends out the signal greatly to described main control module.
9. alarming device as claimed in claim 1, is characterized in that:
Described main control module is connected by SPI universal serial bus with described speech chip module.
10. alarming device as claimed in claim 1, is characterized in that:
Described speech chip module comprises: speech chip ISD2130;
In supply module (24) with the connection line of described speech chip module, described power amplifier module, pizo-resistance is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510878457.7A CN105383376B (en) | 2015-12-04 | 2015-12-04 | A kind of new-energy automobile pedestrian's sound alarming device based on ambient sound feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510878457.7A CN105383376B (en) | 2015-12-04 | 2015-12-04 | A kind of new-energy automobile pedestrian's sound alarming device based on ambient sound feedback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105383376A true CN105383376A (en) | 2016-03-09 |
| CN105383376B CN105383376B (en) | 2018-02-23 |
Family
ID=55416368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510878457.7A Active CN105383376B (en) | 2015-12-04 | 2015-12-04 | A kind of new-energy automobile pedestrian's sound alarming device based on ambient sound feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105383376B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454634A (en) * | 2016-11-18 | 2017-02-22 | 深圳市航天华拓科技有限公司 | Environment sound detection-based barking stopping apparatus and barking stopping method |
| WO2017121110A1 (en) * | 2016-01-13 | 2017-07-20 | 吉林航盛电子有限公司 | Pedestrian sound warning device having active early-warning function for use in new-energy vehicle |
| CN109177901A (en) * | 2018-09-12 | 2019-01-11 | 会听声学科技（北京）有限公司 | A kind of customized electric car simulation vocal technique |
| CN109842839A (en) * | 2019-01-29 | 2019-06-04 | 惠州市华智航科技有限公司 | The loudness compensation method such as a kind of |
| CN106114352B (en) * | 2016-06-30 | 2022-02-11 | 智车优行科技（北京）有限公司 | Warning method and device based on electric vehicle and vehicle |
| CN114670750A (en) * | 2020-12-24 | 2022-06-28 | 上海汽车电驱动有限公司 | Sound wave simulation method for driving motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790122A (en) * | 2010-02-06 | 2010-07-28 | 青岛海信移动通信技术股份有限公司 | Plosive eliminating circuit of audio system and mobile communication terminal |
| US20110093149A1 (en) * | 2009-10-18 | 2011-04-21 | NL Giken Incorporated | Vehicle Capable of Low Noise Runs |
| CN103927849A (en) * | 2014-04-28 | 2014-07-16 | 吉林航盛电子有限公司 | Volume adjustable pedestrian voice reminding device of new energy automobile |
| CN103921718A (en) * | 2014-04-28 | 2014-07-16 | 吉林航盛电子有限公司 | Tone tuning device for new energy automobile |
| CN205113134U (en) * | 2015-12-04 | 2016-03-30 | 吉林航盛电子有限公司 | New energy automobile pedestrian sound warning device based on environment sound feedback |
-
2015
- 2015-12-04 CN CN201510878457.7A patent/CN105383376B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110093149A1 (en) * | 2009-10-18 | 2011-04-21 | NL Giken Incorporated | Vehicle Capable of Low Noise Runs |
| CN101790122A (en) * | 2010-02-06 | 2010-07-28 | 青岛海信移动通信技术股份有限公司 | Plosive eliminating circuit of audio system and mobile communication terminal |
| CN103927849A (en) * | 2014-04-28 | 2014-07-16 | 吉林航盛电子有限公司 | Volume adjustable pedestrian voice reminding device of new energy automobile |
| CN103921718A (en) * | 2014-04-28 | 2014-07-16 | 吉林航盛电子有限公司 | Tone tuning device for new energy automobile |
| CN205113134U (en) * | 2015-12-04 | 2016-03-30 | 吉林航盛电子有限公司 | New energy automobile pedestrian sound warning device based on environment sound feedback |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017121110A1 (en) * | 2016-01-13 | 2017-07-20 | 吉林航盛电子有限公司 | Pedestrian sound warning device having active early-warning function for use in new-energy vehicle |
| CN106114352B (en) * | 2016-06-30 | 2022-02-11 | 智车优行科技（北京）有限公司 | Warning method and device based on electric vehicle and vehicle |
| CN106454634A (en) * | 2016-11-18 | 2017-02-22 | 深圳市航天华拓科技有限公司 | Environment sound detection-based barking stopping apparatus and barking stopping method |
| CN109177901A (en) * | 2018-09-12 | 2019-01-11 | 会听声学科技（北京）有限公司 | A kind of customized electric car simulation vocal technique |
| CN109177901B (en) * | 2018-09-12 | 2020-07-24 | 会听声学科技（北京）有限公司 | Customizable electric automobile simulation sounding method |
| CN109842839A (en) * | 2019-01-29 | 2019-06-04 | 惠州市华智航科技有限公司 | The loudness compensation method such as a kind of |
| CN114670750A (en) * | 2020-12-24 | 2022-06-28 | 上海汽车电驱动有限公司 | Sound wave simulation method for driving motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105383376B (en) | 2018-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105489063A (en) | New energy vehicle pedestrian sound warning device with active early warning function | |
| CN105383376A (en) | Pedestrian sound warning device, based on environmental sound feedback, of new energy vehicle | |
| CN110758235B (en) | Pedestrian warning device system and pedestrian warning method | |
| WO2011128200A1 (en) | Simulation of engine sounds in silent vehicles | |
| ATE251058T1 (en) | VOICE CONTROLLED VEHICLE ALARM SYSTEM | |
| CN102169686A (en) | Vehicle presence notification apparatus | |
| CN101850742B (en) | Pedestrian cautioning safety system and method of pure electric mode hybrid electric vehicle and vehicle thereof | |
| CN103927849B (en) | Volume adjustable pedestrian voice reminding device of new energy automobile | |
| CN205113134U (en) | New energy automobile pedestrian sound warning device based on environment sound feedback | |
| DE102013213543A1 (en) | VEHICLE PROXIMITY UNDER DIRECTION UNIT | |
| US20130343570A1 (en) | Device and method for generating noise for a motor vehicle | |
| CN205281809U (en) | New energy automobile pedestrian sound warning device with initiative warning function | |
| CN102700459A (en) | Multifunctional warning system for new energy automobile | |
| CN102438193B (en) | Safe earphone capable of automatically muting | |
| CN103921718B (en) | A kind of tuning device for new-energy automobile | |
| CN110525450A (en) | A kind of method and system adjusting vehicle-mounted voice sensitivity | |
| CN105480149A (en) | Pedestrian warning device for new energy vehicle | |
| US20240034230A1 (en) | Vehicle warning system | |
| US20080136617A1 (en) | System for Downloading Turn Signals | |
| CN203773694U (en) | Adjustable-volume pedestrian sound prompting device of new energy automobile | |
| CN203896317U (en) | Volume controller for vehicle audio frequency equipment | |
| CN109131069B (en) | Electric automobile sound control device and method | |
| CN208006845U (en) | Vehicle-mounted warning mixer for vehicle and vehicle-mounted caution sound equipment | |
| CN202210861U (en) | Engine imitation sound device | |
| DE102012213478A1 (en) | Vehicle presence detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |