CN102173289A - 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 PDFInfo
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- CN102173289A CN102173289A CN2011100367553A CN201110036755A CN102173289A CN 102173289 A CN102173289 A CN 102173289A CN 2011100367553 A CN2011100367553 A CN 2011100367553A CN 201110036755 A CN201110036755 A CN 201110036755A CN 102173289 A CN102173289 A CN 102173289A
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- Prior art keywords
- control
- control unit
- reversing
- automatic mute
- signal
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- 238000000034 methods Methods 0.000 title abstract description 14
- 238000004891 communication Methods 0.000 description 7
- 230000002457 bidirectional Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
Abstract
Description
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: whether a, detection exist astern signal, and detected astern signal are inputed to the control unit of main system of audio; B, control unit are controlled the acoustics volume automatic mute according to the astern signal of importing.
Itself possesses control unit main system of audio, the acoustics volume size can be set, whether exist astern signal as the condition that starts the acoustics volume automatic mute by 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.
In step a, from the CAN bus, detect whether there is astern signal, and astern signal is inputed to described control unit by the CAN transceiver of described main system of audio.
Described CAN transceiver is a TJA1055T/3 type CAN transceiver.
In step a, the rigid line of detected astern signal by main system of audio connected pin input to control unit.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.
Before step a, also be provided with step a1: acoustics volume automatic mute function when whether allowing to move backward promptly is set.Driver's manual intervention step is provided.
Described astern signal is the reverse gear switch signal.Signal is direct, is easy to obtain.
Behind step b, also be provided with step b1: when promptly detecting astern signal and not existing, described control unit control acoustics volume returns to the state before the reversing.
Advantage of the present invention is: by collection, the judgement of main system of audio, to the automatic mute and the recovery control of acoustics volume, need not the extra operation of driver when realizing reversing to astern signal, and simple, reliable and practical, and also 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, illustrative view of functional configuration for a kind 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, 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 enters step 2;
Step 2: detect whether there is CAN bus communication function, if, enter step S1, if not, enter step S 3;
Among the step S1
Whether normal, if not, enter step S11, if enter step S21 if detecting CAN bus communication function earlier;
Step S11: the user is provided with acoustics volume automatic mute when whether allowing to move backward, if do not allow, enters step 1, the sound equipment normal operation; If allow, enter step S12;
Step S12: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and enter step S13;
Step S13: control unit 2 judges that whether reverse gear switch is closed, if not, returns step S12, if enter step S14;
Step S14: control unit 2 control audio process 2 and power amplifier 3 are realized the automatic mute of acoustics volume; And enter step S15;
Step S15: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and enter step S16;
Step S16: control unit 2 judges whether reverse gear switch disconnects, and if not, returns step S15, if enter step 3;
Step S21: the user is provided with acoustics volume automatic mute when whether allowing to move backward, if do not allow, enters step 1, the sound equipment normal operation; If allow, enter step S22;
Step S22: read the reverse gear switch signal from the CAN bus, and enter step S23;
Step S23: control unit 2 judges that whether reverse gear switch is closed, if not, returns step S22, if enter step S24;
Step S24: control unit 2 control audio process 2 and power amplifier 3 are realized the automatic mute of acoustics volume; And enter step S25;
Step S25: read the reverse gear switch signal from the CAN bus, and enter step S26;
Step S26: control unit 2 judges whether reverse gear switch disconnects, and if not, returns step S25, if enter 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, enter step S31;
Step S31: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and enter step S32;
Step S32: control unit 2 judges that whether reverse gear switch is closed, if not, returns step S31, if enter step S33;
Step S33: control unit 2 control audio process 2 and power amplifier 3 are realized the automatic mute of acoustics volume; And enter step S34;
Step S34: connect pin from the main system of audio rigid line and read the reverse gear switch signal, and enter step S35;
Step S35: control unit 2 judges whether reverse gear switch disconnects, and if not, returns step S34, if enter 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 as the user.
Acoustics volume automatic mute function when selecting to allow reversing as 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 by 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 by 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 as the user.Acoustics volume automatic mute function when selecting to allow reversing as the user, then when chaufeur extension reverse gear is moveed backward, the control unit 2 of main system of audio directly connects pin by rigid line and reads the reverse gear switch signal condition, control unit 2 will finally be realized the quiet output function of acoustics volume by 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 by rigid line and detect new reversing switch signal condition, after control unit 2 carries out the logic determines processing, will be by 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 as the user when then moveing backward.Acoustics volume automatic mute function when selecting to allow reversing as the user, then when chaufeur extension reverse gear is moveed backward, the control unit 2 of main system of audio directly connects pin by rigid line and reads the reversing switch signal condition, control unit 2 will finally be realized the quiet output function of acoustics volume by 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 by rigid line and detect new reversing switch signal condition, after control unit 2 carries out the logic determines processing, will be by 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 at 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 (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036755 CN102173289B (en) | 2011-02-12 | 2011-02-12 | Method for controlling automatic muting of volume of auto sound in the backing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110036755 CN102173289B (en) | 2011-02-12 | 2011-02-12 | Method for controlling automatic muting of volume of auto sound in the backing process |
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| Publication Number | Publication Date |
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| CN102173289A true CN102173289A (en) | 2011-09-07 |
| CN102173289B CN102173289B (en) | 2012-11-28 |
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| CN104290653A (en) * | 2014-10-29 | 2015-01-21 | 奇瑞汽车股份有限公司 | Voice prompt and alarm system based on vehicle-mounted sound system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102173289B (en) | 2012-11-28 |
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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 |
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