CN107804223A - Electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms - Google Patents
Electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms Download PDFInfo
- Publication number
- CN107804223A CN107804223A CN201710801998.9A CN201710801998A CN107804223A CN 107804223 A CN107804223 A CN 107804223A CN 201710801998 A CN201710801998 A CN 201710801998A CN 107804223 A CN107804223 A CN 107804223A
- Authority
- CN
- China
- Prior art keywords
- interrupt task
- avas
- electric automobile
- electrical teaching
- audio 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
- B60Q5/006—Arrangement or adaptation of acoustic signal devices automatically actuated indicating risk of collision between vehicles or with pedestrians
Abstract
The present invention relates to electric automobile pedestrian to warn system for electrical teaching AVAS audio control algorithms, including the first interrupt task and the second interrupt task, first interrupt task carries out ignition signal, speed, acceleration and accelerator open degree and reads and carry out tonal volume control, and second interrupt task carries out voice data reading and output.The present invention is more beneficial for pedestrian and notices the close of electric vehicle and recognize the transport condition of vehicle, improves drive safety, reduces the noise sent due to loudspeaker open and close, driver attention is more concentrated.
Description
Technical field
The present invention relates to electric automobile phonetic warning field, specifically electric automobile pedestrian warns system for electrical teaching AVAS sounds
Frequency control algolithm.
Background technology
Motorized, intellectuality are the inexorable trends of development of automobile, and electric automobile has been included into many national development strategies
In.But due to electric car in low speed it is very quiet, power drive system hardly sends any noise, and pedestrian's especially eyesight hinders
The person of hindering is difficult the presence sense for experiencing automobile, adds potential safety hazard.
As China's vehicle increasingly increases, traffic safety is led into emphasis of concern, people to traffic safety
The attention degree more and more higher in domain, vehicle-mounted active safety scheme are more and more proposed and applied.In order to solve electric automobile
Noise it is too low and caused by pedestrains safety problem, (Acoustic Vehicle Alert System-AVAS) pedestrian's caution sound
System is arisen at the historic moment.
Chinese invention patent CN106114352A (publication date is on November 16th, 2016) discloses one kind《Based on electric car
Alarming method for power, device and vehicle》, intelligence is carried out to pedestrian and driver to the danger classes of pedestrian according to vehicle in patent
Warning, can reduce noise pollution of the vehicle to environment, and be advantageous to pedestrian and step up vigilance.But only fixed several danger
Grade and corresponding caution sound volume, it is impossible to reflect the transport condition of automobile well in real time.
The content of the invention
The technical problems to be solved by the invention are that proposing electric automobile pedestrian warns system for electrical teaching AVAS audio frequency controls
Algorithm, electric automobile alarming sound is set more truly to reflect the transport condition of automobile, at the opening and closing of alarming sound
Manage to eliminate caused noise problem.
The technical problems to be solved by the invention are realized using following technical scheme：
Electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms, including the first interrupt task and the second interruption to appoint
Business, first interrupt task carry out ignition signal, speed, acceleration and accelerator opening amount signal and read and carry out tonal volume control
System, second interrupt task carry out voice data reading and output.
First interrupt task uses T1 timers, and first interrupt task includes Truck type choice, speed interpolation, gradually
Enter control, gradually go out the subtask of control and volume tone control.
Second interrupt task uses T2 timers, second interrupt task include voice data read and interpolation,
Quadraphonic data mixing and the subtask of overall control and Real-Time Filtering.
The speed interpolation obtains GES in the case of the interim frame losing of CAN signal by way of interpolation.
Described to be fade-in control in system starts, system sound volume can gradually increase.
Described gradually to go out control when system exits work, volume can be gradually reduced.
The voice data is read and interpolation is to read sound source data and interpolation according to system current pitch.
The quadraphonic mixing and overall control are that the four road sound source datas that will be read from Flash are individually multiplied by one
Mixed after gain, overall loudness control is carried out multiplied by with a gain after mixing.
The Real-Time Filtering before DAC outputs, by integrated voice data stream by 5 Two-orders wave filter groups into filter
Wave circuit is filtered.
The priority of first interrupt task is less than second interrupt task, first interrupt task and described
The special parameter of two interrupt tasks can be configured by host computer, and the special parameter includes being fade-in gradually going out time, CAN nodes
Number and its analysis mode, tonal volume control table, the bandwidth and channel number of wave filter.
The beneficial effects of the invention are as follows：The present invention is more beneficial for pedestrian and notices the close of electric vehicle and recognize vehicle
Transport condition, improve drive safety, reduce the noise sent due to loudspeaker open and close, make driver attention more
To concentrate.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the algorithm flow chart of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, below it is right
The present invention is expanded on further.
Algorithm flow chart as shown in Figure 1：
Electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms, including the first interrupt task 1 and the second interruption to appoint
Business 2, first interrupt task 1 transmits running condition information, including ignition signal, speed, acceleration, throttle by CAN
Aperture, when the interim frame losing of CAN signal, the speed information after interpolation is transmitted by interpolation, second interrupt task 2 is entered
Row voice data is read and output.
After the ignition signal produces, start first interrupt task 1 and second interrupt task 2.
First interrupt task 1 uses T1 timers, i.e., one time first interruption of operation in the interrupt cycle of T1 timers
Task 1, including subtask：
Truck type choice 11：The source information of different automobile types can be chosen from console according to user's request, is wrapped in source information
Base address containing voice data in external storage Flash, second interrupt task is passed to by way of interrupting and seizing
2；
Speed interpolation 12：CAN transmitting procedure is possible to frame losing occur, and now GES interrupts suddenly can influence to warn
Show the synthesis of sound, GES is now obtained by way of interpolation.
It is fade-in control 13：When system starts, system sound volume gradually increases, and avoids the moment of loudspeaker from opening production
Raw noise jamming；
Gradually go out control 14：When system stalls, system sound volume is gradually reduced, and mildly transition volume avoids pair
Pedestrian produces scaring；
Tonal volume control 15：According to information such as the speed of CAN transmission, acceleration, accelerator open degrees, pass through algorithm meter
Calculate current suitable volume and tone height.
Second interrupt task 2 uses T2 timers, and the requirement of real-time of the second interrupt task 2 is very high, preferentially
Level is higher than first interrupt task 1, primarily to the DAC outputs in the T2 timer interruption cycles are realized, including subtask：
Sound source data is read and interpolation 21：Sound is carried out according to the subtask Truck type choice 11 by first interrupt task 1
The reading of source data, row interpolation is entered to the sound source data by the reading tone size of tonal volume control 15；
The quadraphonic mixes and overall control 22：The four road sound source datas that spi bus will be used to read from outside Flash
(after interpolation) is respectively to per a gain is multiplied by all the way, the source of sound for retelling to obtain integrally is multiplied by a gain, and the numerical value of gain comes
Control 13 is fade-in described in coming from, gradually goes out to control the control output parameter in 14 and volume tone control 15 to volume, this gain
Determine the size of output volume；
Real-Time Filtering 23：Before DAC outputs, by integrated voice data stream by 5 Two-orders wave filter groups into filter
Wave circuit is filtered.
Special parameter in first interrupt task 1 and second interrupt task 2 can be matched somebody with somebody by host computer
Put, the special parameter includes being fade-in gradually to go out time, CAN node numbers and its analysis mode, tonal volume control table, wave filter
Bandwidth and channel number.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these change and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Thing defines.
Claims (10)
1. electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Including the first interrupt task (1) and
Second interrupt task (2), first interrupt task (1) carry out ignition signal, speed, acceleration and accelerator opening amount signal and read
And tonal volume control is carried out, second interrupt task (2) carries out voice data reading and output.
2. electric automobile pedestrian according to claim 1 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
State the first interrupt task (1) and use T1 timers, first interrupt task (1) includes Truck type choice (11), speed interpolation
(12), it is fade-in control (13), gradually goes out the subtask of control (14) and volume tone control (15).
3. electric automobile pedestrian according to claim 1 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
State the second interrupt task (2) and use T2 timers, second interrupt task (2) include voice data read and interpolation (21),
Quadraphonic data mixing and the subtask of overall control (22) and Real-Time Filtering (23).
4. electric automobile pedestrian according to claim 2 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
Speed interpolation (12) is stated in the case of the interim frame losing of CAN signal, GES is obtained by way of interpolation.
5. electric automobile pedestrian according to claim 2 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
State and be fade-in control (13) in system starts, system sound volume can gradually increase.
6. electric automobile pedestrian according to claim 2 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
State and gradually go out control (14) when system exits work, volume can be gradually reduced.
7. electric automobile pedestrian according to claim 3 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
It is to read sound source data and interpolation according to system current pitch to state voice data reading and interpolation (21).
8. electric automobile pedestrian according to claim 3 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
It is after the four road sound source datas that will be read from Flash are individually multiplied by a gain to state quadraphonic mixing and overall control (22)
Mixed, overall loudness control is carried out multiplied by with a gain after mixing.
9. electric automobile pedestrian according to claim 3 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：Institute
Real-Time Filtering (23) is stated before DAC outputs, by integrated voice data stream by 5 Two-orders wave filter groups into filter circuit
It is filtered.
10. electric automobile pedestrian according to claim 1 warns system for electrical teaching AVAS audio control algorithms, it is characterised in that：
The priority of first interrupt task (1) is less than second interrupt task (2), first interrupt task (1) and described
The special parameter of second interrupt task (2) can be configured by host computer, the special parameter include be fade-in gradually go out the time,
CAN node numbers and its analysis mode, tonal volume control table, the bandwidth and channel number of wave filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801998.9A CN107804223B (en) | 2017-09-07 | 2017-09-07 | AVAS audio control algorithm of pedestrian warning sound system of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801998.9A CN107804223B (en) | 2017-09-07 | 2017-09-07 | AVAS audio control algorithm of pedestrian warning sound system of electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107804223A true CN107804223A (en) | 2018-03-16 |
| CN107804223B CN107804223B (en) | 2020-08-25 |
Family
ID=61576490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710801998.9A Active CN107804223B (en) | 2017-09-07 | 2017-09-07 | AVAS audio control algorithm of pedestrian warning sound system of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107804223B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976591A (en) * | 2019-05-23 | 2020-11-24 | 天津博顿电子有限公司 | AVAS audio control method of pedestrian warning sound system of electric vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005112341A (en) * | 2003-09-16 | 2005-04-28 | Yamaha Corp | Acoustic device |
| CN101107151A (en) * | 2005-01-19 | 2008-01-16 | 丰田自动车株式会社 | Vehicle warning device |
| CN101515164A (en) * | 2009-02-13 | 2009-08-26 | 深圳华北工控软件技术有限公司 | Vehicle-mounted single-chip computer controller and application method thereof |
| CN102358235A (en) * | 2011-09-19 | 2012-02-22 | 重庆长安汽车股份有限公司 | Control method of prompt voice device used for pure electric vehicle |
-
2017
- 2017-09-07 CN CN201710801998.9A patent/CN107804223B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005112341A (en) * | 2003-09-16 | 2005-04-28 | Yamaha Corp | Acoustic device |
| CN101107151A (en) * | 2005-01-19 | 2008-01-16 | 丰田自动车株式会社 | Vehicle warning device |
| CN101515164A (en) * | 2009-02-13 | 2009-08-26 | 深圳华北工控软件技术有限公司 | Vehicle-mounted single-chip computer controller and application method thereof |
| CN102358235A (en) * | 2011-09-19 | 2012-02-22 | 重庆长安汽车股份有限公司 | Control method of prompt voice device used for pure electric vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976591A (en) * | 2019-05-23 | 2020-11-24 | 天津博顿电子有限公司 | AVAS audio control method of pedestrian warning sound system of electric vehicle |
| CN111976591B (en) * | 2019-05-23 | 2024-01-09 | 天津博顿电子有限公司 | AVAS audio control device of pedestrian warning sound system of electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107804223B (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110758235B (en) | Pedestrian warning device system and pedestrian warning method | |
| CN103183032B (en) | Limiting vehicle speed safety assisting system and the safe householder method of limiting vehicle speed | |
| WO2012070334A1 (en) | Vehicle travel warning device | |
| CN108831460A (en) | A kind of interactive voice control system and method based on fatigue monitoring | |
| JP5662273B2 (en) | Interrupt control device and interrupt control method | |
| US10741076B2 (en) | Cognitively filtered and recipient-actualized vehicle horn activation | |
| WO2013136505A1 (en) | Alert sound control unit for approaching vehicle warning apparatus | |
| DE102016221646A1 (en) | Improved noise generation for quiet vehicles | |
| CN106379229A (en) | Pedestrian warning system for electric automobile and method | |
| CN104369690B (en) | One realizes voice and buzzer switchable dual pathways alarm device | |
| CN102390267A (en) | Vehicle speed limiting system and control method thereof | |
| CN106218499A (en) | Intelligent horn of vehicle device, control method and automobile | |
| CN107804223A (en) | Electric automobile pedestrian warns system for electrical teaching AVAS audio control algorithms | |
| CN107310466B (en) | Pedestrian warning method, device and system | |
| Misdariis et al. | The sound of silence of electric vehicles–Issues and answers | |
| KR20130142492A (en) | System and producing method for virtual engine sound | |
| JP6007894B2 (en) | Siren sound output device | |
| JP5071793B2 (en) | Vehicle information providing device | |
| CN101951535A (en) | Vehicle-mounted speaker having LED warning screen | |
| DE102011014051A1 (en) | Stationary warning system for warning driver of lorry and passenger car about e.g. traffic jam, has controller producing adaptive alert that is adapted to passing vehicle, where adaptive alert sounds only when passing vehicle | |
| CN113547981A (en) | Low-speed prompt tone control method and device for electric automobile | |
| JPH11321459A (en) | Alarm sound device for vehicle | |
| CN116729252A (en) | Low-speed prompt tone control method and device, storage medium and electronic equipment | |
| CN214355767U (en) | Electric motor coach control system and electric motor coach | |
| CN211468294U (en) | Voice interaction atmosphere lamp in vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |