CN102173289B - Method for controlling automatic muting of volume of auto sound in the backing process - Google Patents

Method for controlling automatic muting of volume of auto sound in the backing process Download PDF

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Publication number
CN102173289B
CN102173289B CN 201110036755 CN201110036755A CN102173289B CN 102173289 B CN102173289 B CN 102173289B CN 201110036755 CN201110036755 CN 201110036755 CN 201110036755 A CN201110036755 A CN 201110036755A CN 102173289 B CN102173289 B CN 102173289B
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CN
China
Prior art keywords
control unit
control
reversing
audio
automatic mute
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CN 201110036755
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Chinese (zh)
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CN102173289A (en
Inventor
时瑞浩
黄少堂
任强
朱治高
张莹
彭志成
陈文庆
杨赛
Original Assignee
广州汽车集团股份有限公司
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Priority to CN 201110036755 priority Critical patent/CN102173289B/en
Publication of CN102173289A publication Critical patent/CN102173289A/en
Application granted granted Critical
Publication of CN102173289B publication Critical patent/CN102173289B/en

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Abstract

The invention discloses a method for controlling automatic muting of the volume of an auto sound in the backing process, which comprises the following steps of: a, detecting whether a backing signal is present, and inputting the detected backing signal into a control unit of a sound host; and b, controlling the automatic muting of the volume of the sound by using the control unit according to theinput backing signal. The method has the advantages that: the sound host acquires and judges the backing signal, the automatic muting and recovery control of the volume of the sound is realized in the backing process, a driver does not need extra operation, and the method is simple and practicable, reliable and practical, and good in universality.

Description

The control method of auto audio equipment volume automatic mute during a kind of the reversing

Technical field

The present invention relates to the auto audio equipment method for controlling volume.

Background technology

For the help driver of safe ready reversing, usually reversing aid system can be installed, by the Reverse Sensor that is arranged on behind the vehicle body; Peripheral obstacle is surveyed; Send simultaneously chimes of doom prompting and and obstacle between distance, near more from obstacle usually, its chimes of doom is close more at interval.When vehicle possessed sound system and reversing aid system simultaneously, audible sound can cause interference to the obstacle chimes of doom of moveing backward auxiliary, made the driver be difficult to the chimes of doom that the identification reversing aid system produces.

Summary of the invention

The control method of auto audio equipment volume automatic mute when the purpose of this invention is to provide a kind of simple, safe and reliable, the reversing that do not need driver's operation bidirectional.

Technical solution of the present invention is: the control method of auto audio equipment volume automatic mute during a kind of the reversing, and it may further comprise the steps:

A, detect and whether to exist CAN bus communication function and CAN bus communication function whether normal;

B, if exist CAN bus communication and CAN bus communication function normal, then from the CAN bus, detect whether there is astern signal, and detected astern signal inputed to control unit through the CAN transceiver of main system of audio; If do not have CAN bus communication or CAN bus communication functional fault, then the rigid line through main system of audio detects whether there is astern signal, and connects the control unit that pin inputs to detected astern signal main system of audio through the rigid line of main system of audio;

C, control unit are controlled the acoustics volume automatic mute according to the astern signal of importing.

Itself possesses control unit main system of audio; Whether the acoustics volume size can be set, exist astern signal as the condition that starts the acoustics volume automatic mute through detecting, signal is chosen directly convenient; Can when reversing, realize automatic mute to acoustics volume; Need not the driver and intervene, easy to use, safe and reliable.When the CAN bus lost efficacy or did not possess the CAN bus, also can realize the input of astern signal, guarantee not omit astern signal, commonality is good.

Said CAN transceiver is a TJA1055T/3 type CAN transceiver.

Before step b, also be provided with step b1: acoustics volume automatic mute function when whether allowing to move backward promptly is set.

Said astern signal is the reverse gear switch signal.

Behind step b, also be provided with step b2: when promptly detecting astern signal and not existing, said control unit control acoustics volume returns to the state before the reversing.

Advantage of the present invention is: through collection, the judgement of main system of audio to astern signal, to the automatic mute and the recovery control of acoustics volume, need not the extra operation of driver when realizing reversing; Simple, reliable and practical, and commonality is good; When the CAN bus lost efficacy or did not possess the CAN bus; Also can realize the input of astern signal, guarantee not omit astern signal that commonality is good.

Description of drawings

Accompanying drawing 1 is the structural representation of function system of the present invention;

Accompanying drawing 2 is the logical flow chart of control method of the present invention;

1, main system of audio, 2, control unit, 3, audio process, 4, power amplifier, 5, loud speaker, 6, reverse gear switch, 7, the CAN transceiver.

The specific embodiment

Embodiment:

Consult Fig. 1; Be a kind of illustrative view of functional configuration of main system of audio, wherein main system of audio 1 comprises control unit 2, audio process 3, power amplifier 4 and CAN transceiver 7, and its intermediate power amplifier 4 connects the loud speaker 5 of vehicle; The rigid line of control unit 2 connects pin and connects reverse gear switch 6; Simultaneously, CAN transceiver 7 connects the CAN bus, is used to receive the signal of reverse gear switch 6.CAN transceiver model is TJA1055T/3.

Consult Fig. 2, be the logic control chart of the embodiment of the invention, wherein

Step 1: the sound equipment normal operation gets into step 2;

Step 2: detect whether there is CAN bus communication function, if, get into step S1, if not, get into step S3;

Among the step S1

Whether normal, if not, get into step S11 if detecting CAN bus communication function earlier, if get into step S21;

Step S11: the user is provided with acoustics volume automatic mute when whether allowing to move backward, if do not allow, gets into step 1, the sound equipment normal operation; If allow, get into step S12;

Step S12: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and get into step S13;

Step S13: control unit 2 judges whether reverse gear switch is closed, if not, returns step S12, if get into step S14;

Step S14: the automatic mute of control unit 2 control audio process 2 and power amplifier 3 realization acoustics volumes; And entering step S15;

Step S15: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and get into step S16;

Step S16: control unit 2 judges whether reverse gear switch breaks off, and if not, returns step S15, if get into step 3;

Step S21: the user is provided with acoustics volume automatic mute when whether allowing to move backward, if do not allow, gets into step 1, the sound equipment normal operation; If allow, get into step S22;

Step S22: read the reverse gear switch signal from the CAN bus, and get into step S23;

Step S23: control unit 2 judges whether reverse gear switch is closed, if not, returns step S22, if get into step S24;

Step S24: the automatic mute of control unit 2 control audio process 2 and power amplifier 3 realization acoustics volumes; And entering step S25;

Step S25: read the reverse gear switch signal from the CAN bus, and get into step S26;

Step S26: control unit 2 judges whether reverse gear switch breaks off, and if not, returns step S25, if get into step 3;

Among the step S3

Step S3: the user is provided with acoustics volume automatic mute when whether allowing to move backward, if do not allow, returns step 1, the sound equipment normal operation; If allow, get into step S31;

Step S31: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and get into step S32;

Step S32: control unit 2 judges whether reverse gear switch is closed, if not, returns step S31, if get into step S33;

Step S33: the automatic mute of control unit 2 control audio process 2 and power amplifier 3 realization acoustics volumes; And entering step S34;

Step S34: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and get into step S35;

Step S35: control unit 2 judges whether reverse gear switch breaks off, and if not, returns step S34, if get into step 3;

Step 3: recover the preceding acoustics volume broadcast state of reversing, and return step 1.

Above-mentioned steps has been summarized the operating mode under following two kinds of situations:

Situation one: when vehicle has CAN bus communication function

Be in normal operation and CAN communication function just often at sound equipment, select to be provided with acoustics volume automatic mute function when not allowing to move backward, do not activate this function when then moveing backward like the user.

Acoustics volume automatic mute function when selecting to allow reversing like the user; Then when chaufeur extension reverse gear is moveed backward; The CAN transceiver will be given the control unit 2 (MCU) of main system of audio 1 from the reverse gear switch signal forwarding that the CAN bus is collected; Control unit 2 will finally be realized the quiet output function of acoustics volume through the control to audio process 3 (ASP) and power amplifier 4 after carrying out the logic determines processing.After reversing finishes; The CAN transceiver will detect new reversing switch signal and be transmitted to control unit 2 on the CAN bus; After control unit 2 carries out the logic determines processing, will be through the final realization of the control of audio process 3 (ASP) and power amplifier 4 be returned to the preceding acoustics volume broadcast state of reversing.

Be in normal operation and CAN communication function when losing efficacy at sound equipment, select to be provided with acoustics volume automatic mute function when not allowing to move backward, do not activate this function when then moveing backward like the user.Acoustics volume automatic mute function when selecting to allow reversing like the user; Then when chaufeur extension reverse gear is moveed backward; The control unit 2 of main system of audio directly connects pin through rigid line and reads the reverse gear switch signal condition; Control unit 2 will finally be realized the quiet output function of acoustics volume through the control to audio process 3 (ASP) and power amplifier 4 after carrying out the logic determines processing.After reversing finishes; Control unit 2 will connect pin through rigid line and detect new reversing switch signal condition; After control unit 2 carries out the logic determines processing, will be through the final realization of the control of audio process 3 (ASP) and power amplifier 4 be returned to the preceding acoustics volume broadcast state of reversing.

Situation two: when vehicle does not have CAN bus communication function

When sound equipment was under the normal operation and does not have the CAN communication function, acoustics volume automatic mute function did not activate this function when selecting not allow to move backward like the user when then moveing backward.Acoustics volume automatic mute function when selecting to allow reversing like the user; Then when chaufeur extension reverse gear is moveed backward; The control unit 2 of main system of audio directly connects pin through rigid line and reads the reversing switch signal condition; Control unit 2 will finally be realized the quiet output function of acoustics volume through the control to audio process 3 (ASP) and power amplifier 4 after carrying out the logic determines processing.After reversing finishes; Control unit 2 will connect pin through rigid line and detect new reversing switch signal condition; After control unit 2 carries out the logic determines processing, will be through the final realization of the control of audio process 3 (ASP) and power amplifier 4 be returned to the preceding acoustics volume broadcast state of reversing.

Above-listed detailed description is to the specifying of one of the present invention possible embodiments, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.

Claims (5)

1. the control method of the volume of auto audio equipment when a moveing backward automatic mute, it is characterized in that: it may further comprise the steps:
A, detect and whether to exist CAN bus communication function and CAN bus communication function whether normal;
B, if exist CAN bus communication and CAN bus communication function normal, then from the CAN bus, detect whether there is astern signal, and detected astern signal inputed to control unit through the CAN transceiver of main system of audio; If do not have CAN bus communication or CAN bus communication functional fault, then the rigid line through main system of audio detects whether there is astern signal, and connects the control unit that pin inputs to detected astern signal main system of audio through the rigid line of main system of audio;
C, control unit are controlled the acoustics volume automatic mute according to the astern signal of importing.
2. the control method of auto audio equipment volume automatic mute during a kind of reversing the according to claim 1, it is characterized in that: said CAN transceiver is a TJA1055T/3 type CAN transceiver.
3. the control method of auto audio equipment volume automatic mute during a kind of reversing the according to claim 1 and 2 is characterized in that: before step b, also be provided with step b1: acoustics volume automatic mute function when whether allowing to move backward promptly is set.
4. the control method of auto audio equipment volume automatic mute during a kind of reversing the according to claim 3, it is characterized in that: said astern signal is the reverse gear switch signal.
5. the control method of auto audio equipment volume automatic mute during a kind of reversing the according to claim 3; It is characterized in that: behind step b; Also be provided with step b2: when promptly detecting astern signal and not existing, said control unit control acoustics volume returns to the state before the reversing.
CN 201110036755 2011-02-12 2011-02-12 Method for controlling automatic muting of volume of auto sound in the backing process CN102173289B (en)

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CN102173289B true CN102173289B (en) 2012-11-28

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* Cited by examiner, † Cited by third party
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CN104290653B (en) * 2014-10-29 2016-04-27 奇瑞汽车股份有限公司 A kind of auditory tone cues based on car audio system and warning
CN105034940B (en) * 2015-07-29 2018-04-17 奇瑞汽车股份有限公司 A kind of method and apparatus of car alarming

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CN1634728A (en) * 2003-12-30 2005-07-06 同致电子企业股份有限公司 Vehicle rear sound alarm device for back astern
CN2845152Y (en) * 2004-02-20 2006-12-06 彭小毛 Automotive audio player volume controller
CN1928497A (en) * 2005-09-07 2007-03-14 上海大众汽车有限公司 Navigating instrument framework for automobiles
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CN101618701A (en) * 2009-08-19 2010-01-06 河北普华科技有限公司 Central control device of car police electronic equipment

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CN100387016C (en) * 2005-11-11 2008-05-07 哈尔滨工业大学 Heterogeneous multi-bus data transmission method between information processing device
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN1634728A (en) * 2003-12-30 2005-07-06 同致电子企业股份有限公司 Vehicle rear sound alarm device for back astern
CN2845152Y (en) * 2004-02-20 2006-12-06 彭小毛 Automotive audio player volume controller
CN1928497A (en) * 2005-09-07 2007-03-14 上海大众汽车有限公司 Navigating instrument framework for automobiles
CN201268289Y (en) * 2008-09-24 2009-07-08 上海易罗信息科技有限公司 Vehicle mounted estimation navigation and multimedia platform system based on controller local area network bus
CN101618701A (en) * 2009-08-19 2010-01-06 河北普华科技有限公司 Central control device of car police electronic equipment

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Application publication date: 20110907

Assignee: Guangzhou GAC Group Motor Co., Ltd.

Assignor: Guangzhou Automobile Group Co., Ltd.

Contract record no.: 2015440000055

Denomination of invention: Method for controlling automatic muting of volume of auto sound in the backing process

Granted publication date: 20121128

License type: Exclusive License

Record date: 20150319