CN104796513A - Inside-vehicle conversation noise reduction method - Google Patents
Inside-vehicle conversation noise reduction method Download PDFInfo
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- CN104796513A CN104796513A CN201510120710.2A CN201510120710A CN104796513A CN 104796513 A CN104796513 A CN 104796513A CN 201510120710 A CN201510120710 A CN 201510120710A CN 104796513 A CN104796513 A CN 104796513A
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Abstract
The invention discloses an inside-vehicle conversation noise reduction method. The method includes the steps that an air conditioner controller obtains the current vehicle state; a navigation system obtains the conversation state; whether conversation is conducted at present or not is judged, the voltage of an air blower is kept as the current vehicle state value if conversation is not conducted, and the next step is executed if conversation is conducted; the voltage of the air blower is corrected for the first time according to the vehicle speed; the voltage of the air blower is corrected for the second time according to the conversation state. By means of the technical scheme, the information interaction effect is achieved between the vehicle-mounted navigation system and the air conditioner controller, and therefore the air blower is effectively controlled according to the vehicle state and the conversation state, and the comfort degree of passengers is taken into consideration while noise is effectively reduced and the conversation quality is effectively improved.
Description
Technical field
The present invention relates to car noise reduction technology field, specifically refer to call noise-reduction method in a kind of car.
Background technology
The harm of noise is many-sided, and it affects the thinking of people, causes very big interference to people's normal life and work.Meanwhile, noise easily makes that people is irritated, slow in reacting, dispersion attention.The intensity of noise is larger, frequency is higher, action time is longer, and individual is less to the holding capacity of noise, and the impact of noise on people is more obvious.Therefore, car noise can increase the fatigue of driver and occupant, and then affects the driving safety of automobile.Nowadays automotive electronics is surging forward, and the hands-free technology of current voice call is in order to avoid driver is under steam owing to dialing or answering cell phone phone and the one wireless connect technology easily causing traffic accident to propose.Such as implementation of Bluetooth hands-free system has automatic speech recognition function, when not needing contact mobile phone, controlling mobile phone dial or receive calls by phonetic order.He can carry out voice transfer by the sound equipment on car or Bluetooth wireless earphone.But the ability abated the noise of current implementation of Bluetooth hands-free system is very weak, often has very large noise, affect speech quality during call.
At present, in car, call active noise reduction commonly software Method of Noise, is namely reduced the running terminal voltage of air blast, reaches noise reduction by certain algorithm.Usual way just utilizes air-conditioner controller merely to process air blast operating voltage, and does not take into full account the main affecting factors such as talking state, road speed, air time, In Call.
Along with the extensive use of the hands-free technology of voice call on vehicle, automobile driver and crew enjoy that voice call hands-free technology brings conveniently simultaneously to voice communication of vehicle quality and communication process in driving safety higher technical security requirement is proposed.
Summary of the invention
The object of the invention is to overcome weak point of the prior art, provide a kind of can noise reduction effectively, improve speech quality while also taken into account the comfort level of passenger car in converse noise-reduction method.
The object of the invention is to be achieved through the following technical solutions:
Call noise-reduction method in a kind of car, comprises the following steps:
S1, air-conditioner controller obtain current vehicle condition;
S2, navigation system obtain talking state;
S3, judge current whether call, if not, air blast voltage keeps current vehicle condition value; If so, next step is entered;
S4, according to the speed of a motor vehicle, air blast voltage regulation once to be revised;
S5, according to talking state to air blast voltage carry out second time revise.
The present invention has the following advantages and beneficial effect compared to existing technology:
Pass through technique scheme, information interaction effect is realized between onboard navigation system and air-conditioner controller, and then according to vehicle-state, talking state, air blast is controlled effectively, can noise reduction effectively, improve speech quality while also taken into account the comfort level of passenger.
Accompanying drawing explanation
Fig. 1 shows the car interior call noise-reduction method flow chart that the embodiment of the present invention provides;
Fig. 2 blows face pattern down train speed to the correction value of air blast;
Fig. 3 is the influence curve of In Call to air blast.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Fig. 1 shows the car interior call noise-reduction method flow chart that the embodiment of the present invention provides, and comprises the following steps:
S1, air-conditioner controller obtain current vehicle condition;
S2, navigation system obtain talking state;
S3, judge current whether call, if not, air blast voltage keeps current vehicle condition value; If so, next step is entered;
S4, according to the speed of a motor vehicle, air blast voltage regulation once to be revised;
S5, according to talking state to air blast voltage carry out second time revise.
Described current vehicle condition at least comprise following in one or more:
Air conditioning operating mode, air blast voltage U 0, driving vehicle velocity V 0.
Described talking state at least comprise following in one or more:
In Call Vol, air time T, road speed V0.
Described once correction air blast voltage regulation according to the speed of a motor vehicle comprises:
Obtain real-time road speed by onboard navigation system, demarcate the correction difference R of air blast voltage;
According to correction difference R, for a certain speed of a motor vehicle, its first time revised air blast voltage U 1=U_Current – R, wherein, described U_Current is for being A when the speed of a motor vehicle, and set temperature is T0, in non-talking state and PMV=0 time, record the current terminal voltage U_Current of now air blast.
PMV (Predicted, Mean, Vote): namely predict average votes, belong to international standard ISO7730.Characterize the evaluation index of human thermal response (warm-cold sensitivity), represent the average of the cold and hot sensation of most people in same environment.PMV has seven grades of sensations, i.e. cold (-3), cool (-2), slightly cool (-1), comfortable (0), slightly warm (1), warm (2), heat (3).International standard ISO7730 to the recommendation of PMV between-0.5 ~+0.5.
The concrete steps of the correction difference R of described demarcation air blast voltage are:
S401, setting blowing pattern;
S402, when the speed of a motor vehicle is A, set temperature is T0, and when non-talking state, when recording PMV=0, the current terminal voltage U_Current, the noise that record now air blast are Noise_Begin (decibel);
S403, speed of a motor vehicle A, temperature T0 remain unchanged, lower air-out volume gradually, make-0.5≤PMV≤0.5, and make noise now be less than the most ceiling value of noise under the varying environment of national standard, now mark blower end voltage, noise that respective pmv value is corresponding, and the blower end voltage finding out minimum noise corresponding is designated as U_Comfort;
The correction difference R=U_Current-U_Comfort of S404, calculating air blast voltage.
As Fig. 2 blows face pattern down train speed to the correction value of air blast, and for ensureing the requirement of comfortableness, the span of usual R is 0V ~ 2V.Because the larger impact on R of the speed of a motor vehicle is larger, therefore low speed (below 40km/h), middling speed (below 80km/h), at a high speed (80km/h and more than) will be divided into carry out the demarcation of R.In figure, R_low, R_high are the voltage correction values that 40km/h and 80km/h is corresponding, and be 2 when the speed of a motor vehicle reaches R corresponding to V1km/h, now, along with the rising of the speed of a motor vehicle, the maintenance 2 of R value is constant, have taken into account the comfortableness of human body while that object being and ensureing speech quality.
According to above-mentioned identical step, road speed under different blowing pattern can be obtained to the curve of the correction value of air blast.
Described according to talking state to air blast voltage carry out second time revise comprise:
S501, judge whether In Call Vol becomes large, if then perform step S502, otherwise air blast voltage gets first time revised voltage U 1;
S502, judge whether air time T is not more than 5s, if then perform step S503, otherwise perform step S504;
S503, now will decline 2 grades (minimum get voltage corresponding to one grade of air quantity) from U1 by air blast voltage; Second time revises end herein;
S504, judge whether air time T is not more than 125s, if then now 2 grades will be declined from U1 by air blast voltage, and maintain 2 minutes; Otherwise by now air blast voltage is first time revised blower end voltage drop 2 grades in the 5s starting call, then maintenance is after 2 minutes, more at the uniform velocity promotes one grade to it in 120 seconds.
Air blast voltage described in step S503 from U1 decline 2 grades within 5 second time uniform descent complete, the minimum value after then declining when U1 is not more than 2 grades gets voltage corresponding to one grade of air quantity.
In such scheme, after mobile phone is connected with navigation system, the speaker module in navigation information system can regulate sound equipment In Call according to external condition, and the increase of the speed of a motor vehicle will cause the increase of sound system volume automatically.The information volume of navigation information system will send to air-conditioner controller by navigation system by bus, air-conditioner controller receives volume in when becoming main trend, reduction process will be carried out to air blast voltage, thus reduce the noise of air blast, make the signal to noise ratio of call higher, improve quality and passenger's ride comfort of call.As Fig. 3, In Call is to the influence curve of air blast.
By technical scheme of the present invention, talking state, road speed, air time, In Call can be solved on the impact of noise reduction.Solve the information interaction effect of onboard navigation system and air-conditioner controller, and then to the problem that air blast controls effectively.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. a call noise-reduction method in car, is characterized in that, comprise the following steps:
S1, air-conditioner controller obtain current vehicle condition;
S2, navigation system obtain talking state;
S3, judge current whether call, if not, air blast voltage keeps current vehicle condition value; If so, next step is entered;
S4, according to the speed of a motor vehicle, air blast voltage regulation once to be revised;
S5, according to talking state to air blast voltage carry out second time revise.
2. call noise-reduction method in car according to claim 1, is characterized in that, described current vehicle condition at least comprise following in one or more:
Air conditioning operating mode, air blast voltage U 0, driving vehicle velocity V 0.
3. call noise-reduction method in car according to claim 2, is characterized in that, described talking state at least comprise following in one or more:
In Call Vol, air time T, road speed V0.
4. call noise-reduction method in car according to claim 3, is characterized in that, described once correction air blast voltage regulation according to the speed of a motor vehicle comprises:
Obtain real-time road speed by onboard navigation system, demarcate the correction difference R of air blast voltage;
According to correction difference R, for a certain speed of a motor vehicle, its first time revised air blast voltage U 1=U_Current – R, wherein, described U_Current is for being A when the speed of a motor vehicle, and set temperature is T0, when non-talking state, when recording PMV=0, record the current terminal voltage U_Current of now air blast.
5. call noise-reduction method in car according to claim 4, it is characterized in that, the concrete steps of the correction difference R of described demarcation air blast voltage are:
S401, setting blowing pattern;
S402, when the speed of a motor vehicle is A, set temperature is T0, and when non-talking state, when recording PMV=0, the current terminal voltage U_Current, the noise that record now air blast are Noise_Begin;
S403, speed of a motor vehicle A, temperature T0 remain unchanged, lower air-out volume gradually, make-0.5≤PMV≤0.5, and make noise now be less than the most ceiling value of noise under the varying environment of national standard, now mark blower end voltage, noise that respective pmv value is corresponding, and the blower end voltage finding out minimum noise corresponding is designated as U_Comfort;
The correction difference R=U_Current-U_Comfort of S404, calculating air blast voltage.
6. call noise-reduction method in car according to claim 5, is characterized in that, describedly carries out second time correction according to talking state to air blast voltage and comprises:
S501, judge whether In Call Vol becomes large, if then perform step S502, otherwise air blast voltage gets first time revised voltage U 1;
S502, judge whether air time T is not more than 5s, if then perform step S503; Otherwise perform step S504;
S503, general now air blast voltage decline 2 grades from U1, and second time revises end herein;
S504, judge whether air time T is not more than 125s, if then now 2 grades will be declined from U1 by air blast voltage, and maintain 2 minutes; Otherwise by now air blast voltage is first time revised blower end voltage drop 2 grades in the 5s starting call, then maintenance is after 2 minutes, more at the uniform velocity promotes one grade to it in 120 seconds.
7. call noise-reduction method in car according to claim 6, is characterized in that: described air blast voltage from U1 decline 2 grades within 5 second time uniform descent complete.
8. call noise-reduction method in car according to claim 6, is characterized in that: described air blast voltage gets voltage corresponding to one grade of air quantity from the U1 minimum value after then declining when U1 is not more than 2 grades that declines 2 grades.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510120710.2A CN104796513B (en) | 2015-03-18 | 2015-03-18 | A kind of in-car call noise-reduction method |
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| CN201510120710.2A CN104796513B (en) | 2015-03-18 | 2015-03-18 | A kind of in-car call noise-reduction method |
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| CN104796513A true CN104796513A (en) | 2015-07-22 |
| CN104796513B CN104796513B (en) | 2018-04-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107791975A (en) * | 2017-09-26 | 2018-03-13 | 广州小鹏汽车科技有限公司 | A kind of method and system for reducing vehicle-mounted hand-free system call noise |
| CN110691109A (en) * | 2018-07-06 | 2020-01-14 | 上海博泰悦臻网络技术服务有限公司 | Vehicle, vehicle equipment and vehicle-mounted call environment control method thereof |
| CN112241588A (en) * | 2020-09-27 | 2021-01-19 | 武汉格罗夫氢能汽车有限公司 | Fuel cell hydrogen energy automobile blower noise adjusting method, device and storage device |
| CN115412866A (en) * | 2022-08-24 | 2022-11-29 | 长城汽车股份有限公司 | Call control method, device, terminal equipment and storage medium |
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| CN201461502U (en) * | 2009-07-23 | 2010-05-12 | 上海通用汽车有限公司 | Air quantity automatic adjusting device of air conditioner air blower |
| CN103542501A (en) * | 2013-09-26 | 2014-01-29 | 惠州华阳通用电子有限公司 | Automobile air-conditioner control system and control method for automatically controlling air intake amount |
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| WO2003055707A1 (en) * | 2001-12-28 | 2003-07-10 | Valeo Klimasysteme Gmbh | Control device for a heating, ventilating and/or air-conditioning system |
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| CN107791975A (en) * | 2017-09-26 | 2018-03-13 | 广州小鹏汽车科技有限公司 | A kind of method and system for reducing vehicle-mounted hand-free system call noise |
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| CN112241588A (en) * | 2020-09-27 | 2021-01-19 | 武汉格罗夫氢能汽车有限公司 | Fuel cell hydrogen energy automobile blower noise adjusting method, device and storage device |
| CN112241588B (en) * | 2020-09-27 | 2023-04-18 | 武汉格罗夫氢能汽车有限公司 | Fuel cell hydrogen energy automobile blower noise adjusting method, device and storage device |
| CN115412866A (en) * | 2022-08-24 | 2022-11-29 | 长城汽车股份有限公司 | Call control method, device, terminal equipment and storage medium |
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| CN104796513B (en) | 2018-04-13 |
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