CN202508032U - Vehicle-mounted bluetooth hands-free system - Google Patents
Vehicle-mounted bluetooth hands-free system Download PDFInfo
- Publication number
- CN202508032U CN202508032U CN2012201286021U CN201220128602U CN202508032U CN 202508032 U CN202508032 U CN 202508032U CN 2012201286021 U CN2012201286021 U CN 2012201286021U CN 201220128602 U CN201220128602 U CN 201220128602U CN 202508032 U CN202508032 U CN 202508032U
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- bluetooth
- control module
- cellular phone
- signal
- bluetooth cellular
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model relates to a vehicle-mounted bluetooth hands-free system which comprises a bluetooth cellphone control module, a car audio system, a speaker, an inner rearview mirror assembly, a steering wheel control button and a bluetooth cellphone. The vehicle-mounted bluetooth hands-free system is characterized in that the bluetooth cellphone and the bluetooth cellphone control module are connected in a wireless mode and transmit hands-free profile (HFP) signals, incoming number signals transmit data (TXD) and answer signals receive data (RXD) are transmitted in a two-way mode by means of data lines through the bluetooth cellphone control module and the inner rearview mirror assembly, microphone volume signals Mic + and Mic - are transmitted by a rearview mirror to the bluetooth cellphone control module in a one-way mode, the steering wheel control button is connected with the bluetooth cellphone control module through data lines, incoming sound signals are transmitted through the bluetooth cellphone control module to the car audio system which transmits the sound signals to the speaker, and an automobile ignition power supply system is connected with the bluetooth cellphone control module through a power supply wire harness. The vehicle-mounted bluetooth hands-free system can help users to answer calls when the users drive, and therefore improves drive safety and reduces road accidents.
Description
Technical field
The utility model relates to a kind of on-vehicle Bluetooth Handless system, belongs to a kind of compound type onboard system.
Background technology
Along with the continuous development of mobile communication technology, mobile phone has become a part indispensable in people's daily life.But in startup procedure, use mobile phone that major safety risks are arranged; In order to address this problem; People have adopted several different methods, and as through signal modulation, frequency modulation amplification etc., but these methods all can not address this problem well; The appearance of Bluetooth technology provides a more excellent selection for addressing this problem.
(1) inside rear-view mirror interfacing; Comprise caller ID signal (TXD) to the inside rear-view mirror module that receives; (Mic+ Mic-) carries out level conversion and impedance match to Mike's signal of acknowledge signal (RXD) and bluetooth push button signalling (RXD) and inside rear-view mirror; (2) Mike's amplification/power supply unit technology is accomplished 8V to the Mike on the inside rear-view mirror is provided power supply, the signal of the microphone on the inside rear-view mirror is carried out difference amplify, remove to disturb with echo cancel circuit and carry out Mike's Signal Matching; (3) echo cancel circuit technology, the sound passback of loud speaker is eliminated in the acoustic treatment unit of realization hands-free phone.
Summary of the invention
The purpose of the utility model is to provide a kind of on-vehicle Bluetooth Handless system, and it receives calls in the time of can helping the user to drive, and promotes driving safety, reduces traffic accident.
The technical scheme of the utility model is achieved in that the on-vehicle Bluetooth Handless system; Form by sound system, loud speaker, inside rear-view mirror assembly, bearing circle control button, bluetooth cellular phone in bluetooth cellular phone control module, the car; It is characterized in that: bluetooth cellular phone and bluetooth cellular phone control module are through wireless connections transmission HFP signal; Mutually transmit Mike signal volume Mic+ with the inside rear-view mirror assembly through data line bidirectional transmission caller ID signal TXD and acknowledge signal RXD, rearview single through the bluetooth cellular phone control module; Mic-is to the bluetooth cellular phone control module; Bearing circle control button connects the bluetooth cellular phone control module through data line; The incoming call sound signal is via bluetooth cellular phone control module unidirectional transmission sound system in the car, and to loud speaker, the automotive ignition electric power system connects the bluetooth cellular phone control module through the power supply wire harness to sound system with audio signal transmission in the car.
Described inside rear-view mirror assembly is integrated with and detects bluetooth operational and controlled key button, caller ID display system and vehicle-mounted microphone.
The beneficial effect of the utility model is that it receives calls can help the user to drive the time, promotes driving safety, reduces traffic accident.
Description of drawings
The electrical structure block diagram of Fig. 1 the utility model.
Fig. 2 is the inner functional block diagram of the bluetooth cellular phone control module of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further: like Fig. 1, shown in 2; The on-vehicle Bluetooth Handless system; Form by sound system, loud speaker, inside rear-view mirror assembly, bearing circle control button, bluetooth cellular phone in bluetooth cellular phone control module, the car; It is characterized in that: bluetooth cellular phone and bluetooth cellular phone control module are through wireless connections transmission HFP signal; Mutually transmit Mike signal volume Mic+ with the inside rear-view mirror assembly through data line bidirectional transmission caller ID signal TXD and acknowledge signal RXD, rearview single through the bluetooth cellular phone control module; Mic-is to the bluetooth cellular phone control module, and bearing circle control button connects the bluetooth cellular phone control module through data line, and the incoming call sound signal is via bluetooth cellular phone control module unidirectional transmission sound system in the car; To loud speaker, the automotive ignition electric power system connects the bluetooth cellular phone control module through the power supply wire harness to sound system with audio signal transmission in the car.
Described inside rear-view mirror assembly is integrated with and detects bluetooth operational and controlled key button, caller ID display system and vehicle-mounted microphone.
The bluetooth cellular phone control module
The bluetooth cellular phone control module is the key control unit of bluetooth handsfree system; Most functions of bluetooth handsfree system are all realized by the bluetooth cellular phone control module; Inside rear-view mirror assembly and Che Nei sound system just as the input and output interface of system, are realized the information interaction with the user; Bluetooth module is behind automotive ignition, through the user key-press information on the sound system is carried out Bluetooth pairing, bluetooth connects on the collection inside rear-view mirror assembly or in the car, if there is phone can realize answering, hanging up; Through gathering the key information on the inside rear-view mirror assembly, after the analyzing and processing, send instruction during incoming call, realize that call voice is play and caller ID shows to sound equipment, inside rear-view mirror assembly.
The inside rear-view mirror assembly
The inside rear-view mirror assembly is mainly accomplished 3 functions promptly: detect bluetooth operational and controlled key button, caller ID demonstration and vehicle-mounted microphone.
Inside rear-view mirror detects the operation of user to the bluetooth button during bluetooth handsfree system works, sends to bluetooth module through UART after being translated into specified command; Inside rear-view mirror receives the caller ID information that bluetooth module is sent through UART during incoming call, and it is presented on the caller ID telltale; Vehicle-mounted microphone during conversation on the inside rear-view mirror is gathered user's aud. snl. and is inputed to bluetooth module.Because time and present resource, ability situation, the bluetooth keypress function definition on the inside rear-view mirror is also fairly simple, specific as follows:
(1) " answers " function of key, (button can be arranged on bearing circle or the sound equipment)
(2) press during ring: hands-free answering,
(3) " hang up " function of key, (button can be arranged on bearing circle or the sound equipment)
(4) ring or conversation the time are pressed: hang up the telephone,
(5) press during standby: start phonetic dialing,
In addition, also increase caller ID and show (also can on audible indicator, realize):
(1) when incoming call ring and conversation, shows the caller ID of bluetooth telephone.
(2) figure place showing length is 12
Sound system in the car
Sound system in the car is mainly accomplished the broadcast of prompt tone and partner voice.The volume of sound system control sound in the car (can adopt suitably preset volume value, also can manual regulation volume) simultaneously.The MUTE signal level that the bluetooth cellular phone control module is sent is during by high step-down, and sound system begins to play the conversation sound signal of bluetooth output in the car.The MUTE signal level is low always during the conversation.When the MUTE signal level uprises, finishes conversation sound signal, the audio source signal before switching back, signal switching time is less than 0.5s.When MUTE is high, during the sound equipment max volume, sound equipment output is not less than 40dB to Bluetooth audio frequency output isolation.Condition: 1kHz, 0.03v rms.
When playing the conversation aud. snl., only use left loudspeaker and close all the other loud speakers.The additional signal to noise ratio of signal from bluetooth controller interface mouth to the sound equipment mouth should be less than 40dB.Condition: 1kHz, 0.3v rms; When playing the conversation aud. snl., the plan of establishment should remembered or provide to the cooresponding magnification factor initial value of volume knob specially.The different bluetooth cellular phones of convenient reply all will be regulated volume in order to avoid answer a call at every turn; Play the bluetooth telephone incident, should be high priority, can interrupt sound equipment and play and music.After playing the bluetooth telephone end, sound equipment should continue interrupted work; When automotive system powered up, if radio reception is closed, the MUTE signal step-down that bluetooth is sent can be opened sound equipment, after finishing phone, and the sound equipment SELF CL.Start, the shut should be less than 1.2 seconds; Sound equipment receives the difference sound signal from bluetooth, and " bang, bang " sound when this differential pair signal raises simultaneously, during reduction, must not be arranged in the loud speaker significantly.Every end resistance to ground 10k Ω ± 20% is so that diagnosis is used.
Embodiment
The bluetooth cellular phone control module receives, feeds back the HFP signal of bluetooth cellular phone through Bluetooth signal; The caller ID signal (TXD) of bluetooth cellular phone control module sends to the inside rear-view mirror assembly with acknowledge signal (RXD); The inside rear-view mirror assembly is with acknowledge signal (RXD), Mike's signal volume (Mic+; Mic-) feed back to the bluetooth cellular phone control module; The signal output that bearing circle control button will be controlled the audio frequency volume of sending a telegram here through electric signal is to the bluetooth cellular phone control module; The bluetooth cellular phone control module sends to sound system in the car with audio volume high low signal and sound signal again, and the sound equipment sound signal of will finally conversing sends loud speaker to, and the automotive ignition electric power system connects the bluetooth cellular phone control module through power lead.
Claims (2)
1. on-vehicle Bluetooth Handless system; Form by sound system, loud speaker, inside rear-view mirror assembly, bearing circle control button, bluetooth cellular phone in bluetooth cellular phone control module, the car; It is characterized in that: bluetooth cellular phone and bluetooth cellular phone control module are through wireless connections transmission HFP signal; Mutually transmit Mike signal volume Mic+ with the inside rear-view mirror assembly through data line bidirectional transmission caller ID signal TXD and acknowledge signal RXD, rearview single through the bluetooth cellular phone control module; Mic-is to the bluetooth cellular phone control module, and bearing circle control button connects the bluetooth cellular phone control module through data line, and the incoming call sound signal is via bluetooth cellular phone control module unidirectional transmission sound system in the car; To loud speaker, the automotive ignition electric power system connects the bluetooth cellular phone control module through the power supply wire harness to sound system with audio signal transmission in the car.
2. according to the on-vehicle Bluetooth Handless system described in the claim 1, it is characterized in that described inside rear-view mirror assembly, be integrated with and detect bluetooth operational and controlled key button, caller ID display system and vehicle-mounted microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201286021U CN202508032U (en) | 2012-03-30 | 2012-03-30 | Vehicle-mounted bluetooth hands-free system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201286021U CN202508032U (en) | 2012-03-30 | 2012-03-30 | Vehicle-mounted bluetooth hands-free system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202508032U true CN202508032U (en) | 2012-10-31 |
Family
ID=47060532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201286021U Expired - Fee Related CN202508032U (en) | 2012-03-30 | 2012-03-30 | Vehicle-mounted bluetooth hands-free system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202508032U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489310A (en) * | 2013-10-14 | 2014-01-01 | 苏州市思玛特电力科技有限公司 | Taxi calling intelligent response system and method |
| CN105323353A (en) * | 2014-05-29 | 2016-02-10 | 麦恩电子有限公司 | Mobile device audio indications |
| CN110475180A (en) * | 2019-08-23 | 2019-11-19 | 科大讯飞(苏州)科技有限公司 | Vehicle multi-sound area audio processing system and method |
-
2012
- 2012-03-30 CN CN2012201286021U patent/CN202508032U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489310A (en) * | 2013-10-14 | 2014-01-01 | 苏州市思玛特电力科技有限公司 | Taxi calling intelligent response system and method |
| CN105323353A (en) * | 2014-05-29 | 2016-02-10 | 麦恩电子有限公司 | Mobile device audio indications |
| CN105323353B (en) * | 2014-05-29 | 2019-07-26 | 麦恩电子有限公司 | The instruction of mobile device audio |
| CN110475180A (en) * | 2019-08-23 | 2019-11-19 | 科大讯飞(苏州)科技有限公司 | Vehicle multi-sound area audio processing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20140330 |